/* roulang page: index */
:root {
            --color-deep-charcoal: #1C1A17;
            --color-warm-copper: #B08D57;
            --color-copper-hover: #9A7848;
            --color-copper-active: #7C5E36;
            --color-warm-white: #F7F5F1;
            --color-text-dark: #2A2723;
            --color-text-muted: #6B645C;
            --color-text-inverse: #F7F5F1;
            --color-border-soft: #E5E0D9;
            --color-footer-link: #CFC9C1;
            --radius-card: 8px;
            --radius-img: 6px;
            --radius-btn: 4px;
            --shadow-card: 0 2px 8px rgba(28, 26, 23, 0.04);
            --shadow-card-hover: 0 8px 24px rgba(28, 26, 23, 0.08);
            --shadow-sticky: 0 -4px 16px rgba(28, 26, 23, 0.12);
            --transition-fast: 150ms ease-out;
            --transition-smooth: 180ms ease-out;
            --transition-sticky: 140ms ease-out;
            --max-width: 1200px;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 48px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--color-warm-white);
            color: var(--color-text-dark);
            line-height: 1.8;
            font-size: 15px;
            font-weight: 400;
            letter-spacing: 0.2px;
            margin: 0;
            padding: 0;
            padding-bottom: 72px;
            overflow-x: hidden;
        }

        a {
            color: var(--color-warm-copper);
            text-decoration: none;
            transition: color var(--transition-fast), border-color var(--transition-fast);
        }
        a:hover {
            color: var(--color-copper-hover);
        }
        a:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
            border-radius: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input {
            font-family: inherit;
        }

        .container-main {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 767px) {
            .container-main {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* Header & Navigation */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border-soft);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-deep-charcoal);
            letter-spacing: -0.5px;
            text-decoration: none;
            white-space: nowrap;
        }
        .brand-logo:hover {
            color: var(--color-warm-copper);
        }
        .brand-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .brand-actions button {
            background: none;
            border: none;
            color: var(--color-text-dark);
            font-size: 18px;
            padding: 6px;
            border-radius: 50%;
            transition: color var(--transition-fast), background var(--transition-fast);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .brand-actions button:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.06);
        }

        .icon-nav-bar {
            background: #FFFFFF;
            border-top: 1px solid var(--color-border-soft);
            padding: 8px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            position: relative;
        }
        .icon-nav-bar::-webkit-scrollbar {
            display: none;
        }
        .icon-nav-inner {
            display: flex;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            flex-wrap: nowrap;
            justify-content: flex-start;
        }
        .icon-nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            padding: 10px 14px;
            border-radius: var(--radius-card);
            text-decoration: none;
            color: var(--color-text-dark);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            transition: color var(--transition-fast), background var(--transition-fast);
            min-width: 64px;
            flex-shrink: 0;
        }
        .icon-nav-item i {
            font-size: 20px;
            transition: color var(--transition-fast);
            color: var(--color-text-dark);
        }
        .icon-nav-item:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.04);
        }
        .icon-nav-item:hover i {
            color: var(--color-warm-copper);
        }
        .icon-nav-item.active {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.08);
        }
        .icon-nav-item.active i {
            color: var(--color-warm-copper);
        }
        @media (max-width: 767px) {
            .icon-nav-inner {
                padding-left: 12px;
                padding-right: 12px;
                gap: 2px;
            }
            .icon-nav-item {
                padding: 8px 10px;
                font-size: 12px;
                min-width: 52px;
            }
            .icon-nav-item i {
                font-size: 17px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .brand-row {
                padding: 10px 16px;
            }
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(28, 26, 23, 0.62) 0%, rgba(28, 26, 23, 0.48) 50%, rgba(28, 26, 23, 0.58) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            padding: 40px 24px;
        }
        .hero-content h1 {
            font-size: 52px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.15;
            color: #FFFFFF;
            margin: 0 0 16px;
            animation: fadeUpIn 0.7s ease-out forwards;
        }
        .hero-content .hero-subtitle {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.82);
            margin: 0 0 28px;
            line-height: 1.6;
            animation: fadeUpIn 0.7s ease-out 0.1s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }
        .hero-search-wrap {
            display: flex;
            max-width: 520px;
            margin: 0 auto 28px;
            background: #FFFFFF;
            border-radius: 6px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(28, 26, 23, 0.2);
            animation: fadeUpIn 0.7s ease-out 0.2s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }
        .hero-search-wrap input {
            flex: 1;
            border: none;
            padding: 14px 18px;
            font-size: 15px;
            color: var(--color-text-dark);
            background: #FFFFFF;
            outline: none;
            min-width: 0;
        }
        .hero-search-wrap input::placeholder {
            color: var(--color-text-muted);
        }
        .hero-search-wrap button {
            background: var(--color-warm-copper);
            color: #FFFFFF;
            border: none;
            padding: 14px 22px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            transition: background var(--transition-fast);
            white-space: nowrap;
        }
        .hero-search-wrap button:hover {
            background: var(--color-copper-hover);
        }
        .hero-quick-cats {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            animation: fadeUpIn 0.7s ease-out 0.3s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
        }
        .hero-quick-cats a {
            display: inline-block;
            padding: 8px 18px;
            border: 1px solid rgba(255, 255, 255, 0.55);
            border-radius: 20px;
            color: #FFFFFF;
            font-size: 13px;
            font-weight: 500;
            text-decoration: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .hero-quick-cats a:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(255, 255, 255, 0.8);
            color: #FFFFFF;
        }
        @keyframes fadeUpIn {
            from {
                opacity: 0;
                transform: translateY(16px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        @media (max-width: 1023px) {
            .hero-content h1 {
                font-size: 36px;
            }
            .hero-section {
                min-height: 55vh;
            }
        }
        @media (max-width: 767px) {
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-content .hero-subtitle {
                font-size: 15px;
            }
            .hero-search-wrap {
                flex-direction: column;
                border-radius: 6px;
            }
            .hero-search-wrap input {
                padding: 12px 14px;
                font-size: 14px;
            }
            .hero-search-wrap button {
                padding: 12px;
                text-align: center;
                width: 100%;
            }
            .hero-section {
                min-height: 50vh;
            }
            .hero-quick-cats a {
                padding: 6px 14px;
                font-size: 12px;
            }
        }

        /* Section通用 */
        .section-block {
            padding: var(--section-gap-desktop) 0;
        }
        @media (max-width: 767px) {
            .section-block {
                padding: var(--section-gap-mobile) 0;
            }
        }
        .section-title {
            font-size: 34px;
            font-weight: 650;
            letter-spacing: -0.3px;
            line-height: 1.25;
            color: var(--color-deep-charcoal);
            margin: 0 0 10px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--color-text-muted);
            margin: 0 0 32px;
            line-height: 1.7;
            max-width: 600px;
        }
        @media (max-width: 767px) {
            .section-title {
                font-size: 26px;
            }
            .section-desc {
                font-size: 14px;
                margin-bottom: 24px;
            }
        }

        /* 卖点三连 */
        .selling-points-grid {
            display: grid;
            grid-template-columns: 5fr 3fr 4fr;
            gap: 20px;
        }
        .sp-card {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-smooth);
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }
        .sp-card:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .sp-card .sp-icon {
            font-size: 28px;
            color: var(--color-warm-copper);
            flex-shrink: 0;
            margin-top: 2px;
        }
        .sp-card .sp-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-deep-charcoal);
            margin: 0 0 6px;
        }
        .sp-card .sp-desc {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }
        @media (max-width: 1023px) {
            .selling-points-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            .selling-points-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .sp-card {
                padding: 20px 16px;
            }
        }

        /* 场景演示双栏 */
        .scene-demo-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .scene-text h3 {
            font-size: 28px;
            font-weight: 600;
            color: var(--color-deep-charcoal);
            margin: 0 0 14px;
            line-height: 1.3;
        }
        .scene-text p {
            font-size: 15px;
            color: var(--color-text-dark);
            line-height: 1.8;
            margin: 0 0 20px;
        }
        .scene-data-points {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        .scene-data-point {
            text-align: center;
        }
        .scene-data-point .dp-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-warm-copper);
            letter-spacing: -0.3px;
        }
        .scene-data-point .dp-label {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: 4px;
        }
        .scene-image-wrap {
            border-radius: var(--radius-img);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .scene-image-wrap img {
            width: 100%;
            height: auto;
            display: block;
        }
        @media (max-width: 1023px) {
            .scene-demo-row {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .scene-text h3 {
                font-size: 24px;
            }
        }

        /* 社会认同 */
        .social-proof-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .social-proof-card {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-smooth);
        }
        .social-proof-card:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .social-proof-card .spf-num {
            font-size: 38px;
            font-weight: 700;
            color: var(--color-warm-copper);
            letter-spacing: -0.3px;
        }
        .social-proof-card .spf-label {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-top: 6px;
        }
        @media (max-width: 1023px) {
            .social-proof-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 767px) {
            .social-proof-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .social-proof-card {
                padding: 20px 14px;
            }
            .social-proof-card .spf-num {
                font-size: 28px;
            }
        }

        /* 新闻中心 */
        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
        }
        .news-list-col {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-item {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border-soft);
            transition: all var(--transition-smooth);
            position: relative;
            align-items: flex-start;
        }
        .news-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 0;
            background: var(--color-warm-copper);
            transition: width var(--transition-smooth);
            border-radius: 0 2px 2px 0;
        }
        .news-item:hover::before {
            width: 3px;
        }
        .news-date-badge {
            flex-shrink: 0;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 600;
            padding: 6px 10px;
            border-radius: 4px;
            text-align: center;
            min-width: 50px;
            line-height: 1.3;
        }
        .news-body h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-deep-charcoal);
            margin: 0 0 6px;
            line-height: 1.4;
        }
        .news-body p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0 0 8px;
            line-height: 1.6;
        }
        .read-more-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-warm-copper);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }
        .read-more-link i {
            font-size: 11px;
            transition: transform var(--transition-fast);
        }
        .read-more-link:hover {
            gap: 8px;
            color: var(--color-copper-hover);
        }
        .read-more-link:hover i {
            transform: translateX(3px);
        }
        .news-featured-card {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: sticky;
            top: 120px;
        }
        .news-featured-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .news-featured-body {
            padding: 18px;
        }
        .news-featured-body h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-deep-charcoal);
            margin: 0 0 8px;
        }
        .news-featured-body p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0 0 10px;
            line-height: 1.6;
        }
        @media (max-width: 1023px) {
            .news-layout {
                grid-template-columns: 1fr;
            }
            .news-featured-card {
                position: static;
                display: flex;
                flex-direction: row;
                gap: 16px;
            }
            .news-featured-card img {
                width: 160px;
                height: 120px;
                flex-shrink: 0;
            }
        }
        @media (max-width: 767px) {
            .news-item {
                flex-direction: column;
                gap: 8px;
            }
            .news-featured-card {
                flex-direction: column;
            }
            .news-featured-card img {
                width: 100%;
                height: 180px;
            }
            .news-body h4 {
                font-size: 16px;
            }
        }

        /* 品牌介绍 */
        .brand-intro-block {
            background: var(--color-deep-charcoal);
            color: var(--color-text-inverse);
            padding: 56px 0;
            position: relative;
        }
        .brand-intro-block::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--color-warm-copper);
        }
        .brand-intro-block h3 {
            font-size: 28px;
            font-weight: 650;
            color: #FFFFFF;
            margin: 0 0 16px;
        }
        .brand-intro-block p {
            font-size: 15px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.85);
            max-width: 800px;
            margin: 0;
        }
        @media (max-width: 767px) {
            .brand-intro-block {
                padding: 36px 0;
            }
            .brand-intro-block h3 {
                font-size: 22px;
            }
            .brand-intro-block p {
                font-size: 14px;
            }
        }

        /* 深度内容 */
        .deep-content-alt {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .deep-content-alt.reverse {
            direction: rtl;
        }
        .deep-content-alt.reverse>* {
            direction: ltr;
        }
        .deep-content-alt .dc-image {
            border-radius: var(--radius-img);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .deep-content-alt .dc-image img {
            width: 100%;
            height: auto;
        }
        .deep-content-alt .dc-text h3 {
            font-size: 26px;
            font-weight: 600;
            color: var(--color-deep-charcoal);
            margin: 0 0 14px;
            line-height: 1.3;
        }
        .deep-content-alt .dc-text p {
            font-size: 15px;
            color: var(--color-text-dark);
            line-height: 1.85;
            margin: 0;
        }
        @media (max-width: 1023px) {
            .deep-content-alt {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .deep-content-alt.reverse {
                direction: ltr;
            }
            .deep-content-alt .dc-text h3 {
                font-size: 22px;
            }
        }

        /* 非对称Grid深度内容 */
        .asymmetric-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            grid-template-rows: auto auto;
            gap: 20px;
        }
        .asymmetric-grid .ag-large {
            grid-row: 1 / 3;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .asymmetric-grid .ag-large img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }
        .asymmetric-grid .ag-small {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .asymmetric-grid .ag-small img {
            width: 100%;
            height: 150px;
            object-fit: cover;
        }
        .asymmetric-grid .ag-text-block {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            padding: 22px 18px;
            box-shadow: var(--shadow-card);
            font-size: 14px;
            color: var(--color-text-dark);
            line-height: 1.75;
        }
        @media (max-width: 1023px) {
            .asymmetric-grid {
                grid-template-columns: 1fr 1fr;
                grid-template-rows: auto;
            }
            .asymmetric-grid .ag-large {
                grid-row: auto;
            }
            .asymmetric-grid .ag-large img {
                min-height: 220px;
            }
        }
        @media (max-width: 767px) {
            .asymmetric-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .asymmetric-grid .ag-small img {
                height: 180px;
            }
        }

        /* 热门专题 */
        .hot-topics-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .hot-topic-tag {
            display: inline-block;
            padding: 10px 20px;
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: 24px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-dark);
            text-decoration: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .hot-topic-tag:hover {
            border-color: var(--color-warm-copper);
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.04);
            box-shadow: var(--shadow-card-hover);
        }

        /* 内容预告 */
        .preview-timeline {
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
            padding-left: 28px;
        }
        .preview-timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border-soft);
        }
        .preview-item {
            position: relative;
            padding: 18px 0 18px 24px;
            border-bottom: 1px solid var(--color-border-soft);
        }
        .preview-item::before {
            content: '';
            position: absolute;
            left: -24px;
            top: 24px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-warm-copper);
            border: 2px solid #FFFFFF;
            box-shadow: 0 0 0 3px var(--color-border-soft);
        }
        .preview-item .pv-date {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-warm-copper);
            text-transform: uppercase;
            margin: 0 0 4px;
        }
        .preview-item h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-deep-charcoal);
            margin: 0 0 6px;
        }
        .preview-item p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }
        @media (max-width: 767px) {
            .preview-timeline {
                padding-left: 20px;
            }
            .preview-item {
                padding: 14px 0 14px 18px;
            }
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 800px;
        }
        .faq-item {
            padding: 0;
            border-bottom: 1px solid var(--color-border-soft);
            padding-bottom: 20px;
        }
        .faq-q {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-deep-charcoal);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .faq-a {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.7;
        }
        .faq-more {
            margin-top: 20px;
            font-size: 14px;
        }
        .faq-more a {
            color: var(--color-warm-copper);
            font-weight: 500;
        }

        /* 转化表单 */
        .cta-form-section {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            padding: 44px 36px;
            box-shadow: var(--shadow-card);
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-form-section h3 {
            font-size: 26px;
            font-weight: 650;
            color: var(--color-deep-charcoal);
            margin: 0 0 8px;
        }
        .cta-form-section p {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 0 0 24px;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 440px;
            margin: 0 auto;
        }
        .subscribe-form input {
            flex: 1;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-btn);
            padding: 12px 16px;
            font-size: 15px;
            color: var(--color-text-dark);
            outline: none;
            transition: border-color var(--transition-fast);
            min-width: 0;
        }
        .subscribe-form input:focus {
            border-color: var(--color-warm-copper);
        }
        .subscribe-form button {
            background: var(--color-warm-copper);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-btn);
            padding: 12px 22px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            transition: background var(--transition-fast);
            white-space: nowrap;
        }
        .subscribe-form button:hover {
            background: var(--color-copper-hover);
        }
        .subscribe-form button:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
        }
        .form-hint {
            font-size: 12px;
            color: var(--color-text-muted);
            margin-top: 10px;
        }
        @media (max-width: 767px) {
            .cta-form-section {
                padding: 28px 18px;
            }
            .subscribe-form {
                flex-direction: column;
                gap: 8px;
            }
            .subscribe-form button {
                width: 100%;
            }
        }

        /* 底部固定转化条 */
        .sticky-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--color-deep-charcoal);
            color: #FFFFFF;
            z-index: 999;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 24px;
            box-shadow: var(--shadow-sticky);
            transition: opacity var(--transition-sticky), transform var(--transition-sticky);
            transform: translateY(100%);
            opacity: 0;
            pointer-events: none;
        }
        .sticky-bottom-bar.visible {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .sticky-bottom-bar .sbb-left {
            font-size: 15px;
            font-weight: 600;
        }
        .sticky-bottom-bar .sbb-left span {
            color: var(--color-warm-copper);
        }
        .sticky-bottom-bar .sbb-btn {
            background: var(--color-warm-copper);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            transition: background var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }
        .sticky-bottom-bar .sbb-btn:hover {
            background: var(--color-copper-hover);
        }
        @media (max-width: 767px) {
            .sticky-bottom-bar {
                padding: 10px 16px;
                flex-wrap: wrap;
                gap: 8px;
            }
            .sticky-bottom-bar .sbb-left {
                font-size: 13px;
            }
            .sticky-bottom-bar .sbb-btn {
                padding: 8px 16px;
                font-size: 13px;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--color-deep-charcoal);
            color: var(--color-text-inverse);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 14px;
            letter-spacing: 0.5px;
        }
        .footer-col p {
            font-size: 13px;
            color: var(--color-footer-link);
            line-height: 1.7;
            margin: 0;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-footer-link);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-warm-copper);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            font-size: 12px;
            color: var(--color-footer-link);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            justify-content: space-between;
        }
        .footer-bottom a {
            color: var(--color-footer-link);
            text-decoration: none;
            font-size: 12px;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--color-warm-copper);
        }
        .footer-bottom .footer-links-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 767px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .site-footer {
                padding: 32px 0 24px;
            }
        }

        /* 按钮全局 */
        .btn-primary {
            display: inline-block;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            text-decoration: none;
            border: none;
            transition: background var(--transition-fast), box-shadow var(--transition-fast);
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--color-copper-hover);
            box-shadow: 0 0 0 1px var(--color-copper-hover);
        }
        .btn-primary:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
        }
        .btn-primary:active {
            background: var(--color-copper-active);
        }
        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--color-warm-copper);
            padding: 11px 23px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            text-decoration: none;
            border: 1px solid var(--color-warm-copper);
            transition: background var(--transition-fast), color var(--transition-fast);
            cursor: pointer;
        }
        .btn-outline:hover {
            background: rgba(176, 141, 87, 0.08);
            color: var(--color-copper-hover);
            border-color: var(--color-copper-hover);
        }
        .btn-outline:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
        }

/* roulang page: category3 */
:root {
            --color-deep-charcoal: #1C1A17;
            --color-warm-copper: #B08D57;
            --color-copper-hover: #9A7848;
            --color-copper-active: #7C5E36;
            --color-warm-white: #F7F5F1;
            --color-text-dark: #2A2723;
            --color-text-muted: #6B645C;
            --color-text-inverse: #F7F5F1;
            --color-border-soft: #E5E0D9;
            --color-footer-link: #CFC9C1;
            --color-card-bg: #FFFFFF;
            --color-tag-bg: #F0EDE7;
            --color-tag-hover: #E5DFD5;
            --radius-card: 8px;
            --radius-img: 6px;
            --radius-btn: 4px;
            --radius-tag: 20px;
            --shadow-card: 0 2px 8px rgba(28, 26, 23, 0.04);
            --shadow-card-hover: 0 8px 24px rgba(28, 26, 23, 0.08);
            --shadow-sticky: 0 -4px 16px rgba(28, 26, 23, 0.12);
            --shadow-banner-overlay: rgba(28, 26, 23, 0.55);
            --transition-fast: 150ms ease-out;
            --transition-smooth: 180ms ease-out;
            --transition-sticky: 140ms ease-out;
            --max-width: 1200px;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 48px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--color-warm-white);
            color: var(--color-text-dark);
            line-height: 1.8;
            font-size: 15px;
            font-weight: 400;
            letter-spacing: 0.2px;
            margin: 0;
            padding: 0;
            padding-bottom: 72px;
            overflow-x: hidden;
        }

        a {
            color: var(--color-warm-copper);
            text-decoration: none;
            transition: color var(--transition-fast), border-color var(--transition-fast);
        }
        a:hover {
            color: var(--color-copper-hover);
        }
        a:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        .container-main {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header & Navigation */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border-soft);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-deep-charcoal);
            letter-spacing: -0.5px;
            text-decoration: none;
            white-space: nowrap;
        }
        .brand-logo:hover {
            color: var(--color-warm-copper);
        }
        .brand-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .brand-actions button {
            background: none;
            border: none;
            color: var(--color-text-dark);
            font-size: 18px;
            padding: 6px;
            border-radius: 50%;
            transition: color var(--transition-fast), background var(--transition-fast);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .brand-actions button:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.06);
        }
        .icon-nav-bar {
            background: #FFFFFF;
            border-top: 1px solid var(--color-border-soft);
            padding: 8px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            position: relative;
        }
        .icon-nav-bar::-webkit-scrollbar {
            display: none;
        }
        .icon-nav-inner {
            display: flex;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            flex-wrap: nowrap;
            justify-content: flex-start;
        }
        .icon-nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            padding: 10px 14px;
            border-radius: var(--radius-card);
            text-decoration: none;
            color: var(--color-text-dark);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            transition: color var(--transition-fast), background var(--transition-fast);
            min-width: 64px;
            flex-shrink: 0;
        }
        .icon-nav-item i {
            font-size: 20px;
            transition: color var(--transition-fast);
            color: var(--color-text-dark);
        }
        .icon-nav-item:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.04);
        }
        .icon-nav-item:hover i {
            color: var(--color-warm-copper);
        }
        .icon-nav-item.active {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.08);
        }
        .icon-nav-item.active i {
            color: var(--color-warm-copper);
        }

        /* Category Banner */
        .category-banner {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            min-height: 280px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(28, 26, 23, 0.65) 0%, rgba(28, 26, 23, 0.45) 100%);
            z-index: 1;
        }
        .category-banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 40px 24px;
            max-width: 700px;
        }
        .category-banner-content h1 {
            font-size: 42px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.15;
            color: #FFFFFF;
            margin: 0 0 12px 0;
        }
        .category-banner-content .banner-subtitle {
            font-size: 17px;
            color: rgba(247, 245, 241, 0.85);
            font-weight: 400;
            letter-spacing: 0.3px;
            margin: 0;
            line-height: 1.6;
        }
        .category-banner-accent {
            display: inline-block;
            width: 48px;
            height: 3px;
            background: var(--color-warm-copper);
            margin-bottom: 16px;
            border-radius: 2px;
        }

        /* Main Two-Column Layout */
        .two-col-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
            padding-top: var(--section-gap-desktop);
            padding-bottom: var(--section-gap-desktop);
            align-items: start;
        }

        /* Article List */
        .article-list-section {}
        .article-list-section .section-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-warm-copper);
            text-transform: uppercase;
            letter-spacing: 1.2px;
            margin-bottom: 8px;
        }
        .article-list-section .section-heading {
            font-size: 28px;
            font-weight: 650;
            color: var(--color-text-dark);
            letter-spacing: -0.3px;
            margin: 0 0 28px 0;
            line-height: 1.3;
        }
        .article-card {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border-soft);
            transition: background var(--transition-smooth);
            position: relative;
            cursor: pointer;
            border-radius: 0;
        }
        .article-card:hover {
            background: rgba(176, 141, 87, 0.02);
            padding-left: 8px;
            margin-left: -8px;
            border-radius: 6px;
        }
        .article-card:hover::before {
            content: '';
            position: absolute;
            left: 0;
            top: 20px;
            bottom: 20px;
            width: 2px;
            background: var(--color-warm-copper);
            border-radius: 1px;
            transition: opacity var(--transition-fast);
        }
        .article-card-date {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            border-radius: var(--radius-card);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            line-height: 1.2;
        }
        .article-card-date .date-day {
            font-size: 20px;
            line-height: 1;
        }
        .article-card-date .date-month {
            font-size: 11px;
            letter-spacing: 0.5px;
            opacity: 0.9;
        }
        .article-card-body {
            flex: 1;
            min-width: 0;
        }
        .article-card-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0 0 8px 0;
            line-height: 1.4;
            letter-spacing: -0.2px;
        }
        .article-card-body h3 a {
            color: var(--color-text-dark);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .article-card-body h3 a:hover {
            color: var(--color-warm-copper);
        }
        .article-card-body .article-summary {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin: 0 0 10px 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .read-more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-warm-copper);
            text-decoration: none;
            transition: gap var(--transition-fast), color var(--transition-fast);
        }
        .read-more-link i {
            font-size: 12px;
            transition: transform var(--transition-fast);
        }
        .read-more-link:hover {
            color: var(--color-copper-hover);
            gap: 10px;
        }
        .read-more-link:hover i {
            transform: translateX(3px);
        }

        /* Sidebar */
        .sidebar {}
        .sidebar-card {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            margin-bottom: 28px;
            transition: box-shadow var(--transition-smooth);
        }
        .sidebar-card:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .sidebar-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0 0 16px 0;
            letter-spacing: -0.2px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-border-soft);
        }
        .sidebar-card .recommend-item {
            display: flex;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--color-border-soft);
            align-items: flex-start;
            transition: background var(--transition-fast);
            border-radius: 4px;
            cursor: pointer;
        }
        .sidebar-card .recommend-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .sidebar-card .recommend-item:hover {
            background: rgba(176, 141, 87, 0.03);
            margin: 0 -6px;
            padding-left: 6px;
            padding-right: 6px;
            border-radius: 6px;
        }
        .recommend-item-img {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-img);
            object-fit: cover;
            flex-shrink: 0;
            background: #e8e5df;
        }
        .recommend-item-info h5 {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-dark);
            margin: 0 0 4px 0;
            line-height: 1.4;
        }
        .recommend-item-info span {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        /* Tag Cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-cloud .tag-pill {
            display: inline-block;
            padding: 7px 16px;
            background: var(--color-tag-bg);
            color: var(--color-text-dark);
            border-radius: var(--radius-tag);
            font-size: 13px;
            font-weight: 500;
            text-decoration: none;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .tag-cloud .tag-pill:hover {
            background: var(--color-tag-hover);
            border-color: var(--color-warm-copper);
            color: var(--color-warm-copper);
            box-shadow: 0 2px 6px rgba(176, 141, 87, 0.12);
        }

        /* Data Highlights */
        .data-highlights {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            padding-top: var(--section-gap-desktop);
            padding-bottom: var(--section-gap-desktop);
        }
        .data-card {
            background: var(--color-card-bg);
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px 24px;
            text-align: center;
            transition: box-shadow var(--transition-smooth), transform var(--transition-smooth);
        }
        .data-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .data-card .data-number {
            font-size: 42px;
            font-weight: 700;
            color: var(--color-warm-copper);
            letter-spacing: -1px;
            line-height: 1;
            margin-bottom: 8px;
        }
        .data-card .data-label {
            font-size: 14px;
            color: var(--color-text-muted);
            font-weight: 500;
            letter-spacing: 0.3px;
        }

        /* Featured Section */
        .featured-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            padding-top: var(--section-gap-desktop);
            padding-bottom: var(--section-gap-desktop);
            border-top: 1px solid var(--color-border-soft);
        }
        .featured-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
            transition: transform var(--transition-smooth);
        }
        .featured-image:hover img {
            transform: scale(1.02);
        }
        .featured-text h3 {
            font-size: 28px;
            font-weight: 650;
            color: var(--color-text-dark);
            letter-spacing: -0.3px;
            margin: 0 0 16px 0;
            line-height: 1.3;
        }
        .featured-text p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin: 0 0 20px 0;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            text-decoration: none;
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--color-copper-hover);
            box-shadow: 0 0 0 1px var(--color-copper-hover);
            color: #FFFFFF;
        }
        .btn-primary:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
        }
        .btn-primary:active {
            background: var(--color-copper-active);
        }

        /* CTA Section */
        .cta-section {
            background: var(--color-deep-charcoal);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            margin-top: var(--section-gap-desktop);
            margin-bottom: var(--section-gap-desktop);
        }
        .cta-section h3 {
            font-size: 26px;
            font-weight: 650;
            color: var(--color-text-inverse);
            margin: 0 0 12px 0;
            letter-spacing: -0.3px;
        }
        .cta-section p {
            font-size: 15px;
            color: rgba(247, 245, 241, 0.75);
            margin: 0 0 24px 0;
            line-height: 1.7;
        }
        .cta-section .btn-primary {
            font-size: 16px;
            padding: 14px 32px;
        }

        /* Bottom Sticky Bar */
        .sticky-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--color-deep-charcoal);
            z-index: 999;
            padding: 14px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--shadow-sticky);
            opacity: 0;
            transform: translateY(100%);
            transition: opacity var(--transition-sticky), transform var(--transition-sticky);
            pointer-events: none;
        }
        .sticky-bottom-bar.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .sticky-bottom-bar .sticky-brand {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-inverse);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .sticky-bottom-bar .sticky-tagline {
            font-size: 13px;
            color: rgba(247, 245, 241, 0.7);
            margin-left: 12px;
            white-space: nowrap;
        }
        .sticky-bottom-bar .btn-sticky {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.6px;
            text-decoration: none;
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .sticky-bottom-bar .btn-sticky:hover {
            background: var(--color-copper-hover);
            color: #FFFFFF;
            box-shadow: 0 0 0 1px var(--color-copper-hover);
        }

        /* Footer */
        .site-footer {
            background: var(--color-deep-charcoal);
            color: var(--color-text-inverse);
            padding: 56px 0 32px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 36px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-inverse);
            margin: 0 0 16px 0;
            letter-spacing: 0.5px;
        }
        .footer-col p {
            font-size: 13px;
            color: var(--color-footer-link);
            line-height: 1.7;
            margin: 0;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--color-footer-link);
            font-size: 13px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-warm-copper);
        }
        .footer-bottom {
            border-top: 1px solid rgba(229, 224, 217, 0.15);
            margin-top: 36px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 12px;
            color: var(--color-footer-link);
        }
        .footer-bottom span {
            white-space: nowrap;
        }
        .footer-links-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-links-row a {
            color: var(--color-footer-link);
            font-size: 12px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-links-row a:hover {
            color: var(--color-warm-copper);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .two-col-layout {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-top: var(--section-gap-mobile);
                padding-bottom: var(--section-gap-mobile);
            }
            .data-highlights {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .data-card .data-number {
                font-size: 32px;
            }
            .featured-section {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .category-banner-content h1 {
                font-size: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .section-gap {
                padding-top: var(--section-gap-mobile);
                padding-bottom: var(--section-gap-mobile);
            }
        }

        @media (max-width: 768px) {
            .container-main {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-row {
                padding-left: 16px;
                padding-right: 16px;
            }
            .icon-nav-inner {
                padding-left: 12px;
                padding-right: 12px;
                gap: 2px;
            }
            .icon-nav-item {
                padding: 8px 10px;
                font-size: 12px;
                min-width: 52px;
            }
            .icon-nav-item i {
                font-size: 17px;
            }
            .category-banner {
                min-height: 200px;
            }
            .category-banner-content h1 {
                font-size: 26px;
            }
            .category-banner-content .banner-subtitle {
                font-size: 14px;
            }
            .two-col-layout {
                grid-template-columns: 1fr;
                gap: 24px;
                padding-top: 32px;
                padding-bottom: 32px;
            }
            .article-card {
                flex-direction: column;
                gap: 10px;
                padding: 16px 0;
            }
            .article-card-date {
                width: 44px;
                height: 44px;
                flex-shrink: 0;
            }
            .article-card-date .date-day {
                font-size: 16px;
            }
            .article-card-date .date-month {
                font-size: 10px;
            }
            .article-card:hover {
                padding-left: 0;
                margin-left: 0;
            }
            .article-card:hover::before {
                display: none;
            }
            .data-highlights {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
                padding-top: 32px;
                padding-bottom: 32px;
            }
            .data-card {
                padding: 24px 16px;
            }
            .data-card .data-number {
                font-size: 28px;
            }
            .featured-section {
                grid-template-columns: 1fr;
                gap: 20px;
                padding-top: 32px;
                padding-bottom: 32px;
            }
            .cta-section {
                padding: 32px 20px;
                margin-top: 32px;
                margin-bottom: 32px;
                border-radius: 6px;
            }
            .cta-section h3 {
                font-size: 20px;
            }
            .sidebar-card {
                padding: 16px;
                margin-bottom: 20px;
            }
            .sticky-bottom-bar {
                padding: 10px 16px;
                flex-wrap: wrap;
                gap: 8px;
                justify-content: center;
            }
            .sticky-bottom-bar .sticky-tagline {
                display: none;
            }
            .sticky-bottom-bar .sticky-brand {
                font-size: 13px;
            }
            .sticky-bottom-bar .btn-sticky {
                padding: 8px 16px;
                font-size: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            body {
                padding-bottom: 80px;
            }
            .btn-primary {
                padding: 10px 18px;
                font-size: 14px;
            }
            .article-list-section .section-heading {
                font-size: 22px;
            }
            .featured-text h3 {
                font-size: 22px;
            }
            .tag-cloud .tag-pill {
                padding: 5px 12px;
                font-size: 11px;
            }
        }

        @media (max-width: 520px) {
            .data-highlights {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .category-banner {
                min-height: 170px;
            }
            .category-banner-content h1 {
                font-size: 22px;
            }
            .icon-nav-item {
                padding: 6px 8px;
                font-size: 11px;
                min-width: 44px;
            }
            .icon-nav-item i {
                font-size: 15px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .brand-actions button {
                font-size: 16px;
                width: 30px;
                height: 30px;
            }
        }

/* roulang page: category2 */
:root {
            --color-deep-charcoal: #1C1A17;
            --color-warm-copper: #B08D57;
            --color-copper-hover: #9A7848;
            --color-copper-active: #7C5E36;
            --color-warm-white: #F7F5F1;
            --color-text-dark: #2A2723;
            --color-text-muted: #6B645C;
            --color-text-inverse: #F7F5F1;
            --color-border-soft: #E5E0D9;
            --color-footer-link: #CFC9C1;
            --radius-card: 8px;
            --radius-img: 6px;
            --radius-btn: 4px;
            --shadow-card: 0 2px 8px rgba(28, 26, 23, 0.04);
            --shadow-card-hover: 0 8px 24px rgba(28, 26, 23, 0.08);
            --shadow-sticky: 0 -4px 16px rgba(28, 26, 23, 0.12);
            --transition-fast: 150ms ease-out;
            --transition-smooth: 180ms ease-out;
            --transition-sticky: 140ms ease-out;
            --max-width: 1200px;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 48px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--color-warm-white);
            color: var(--color-text-dark);
            line-height: 1.8;
            font-size: 15px;
            font-weight: 400;
            letter-spacing: 0.2px;
            margin: 0;
            padding: 0;
            padding-bottom: 72px;
            overflow-x: hidden;
        }

        a {
            color: var(--color-warm-copper);
            text-decoration: none;
            transition: color var(--transition-fast), border-color var(--transition-fast);
        }

        a:hover {
            color: var(--color-copper-hover);
        }

        a:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        .container-main {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header & Navigation */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border-soft);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-deep-charcoal);
            letter-spacing: -0.5px;
            text-decoration: none;
            white-space: nowrap;
        }

        .brand-logo:hover {
            color: var(--color-warm-copper);
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .brand-actions button {
            background: none;
            border: none;
            color: var(--color-text-dark);
            font-size: 18px;
            padding: 6px;
            border-radius: 50%;
            transition: color var(--transition-fast), background var(--transition-fast);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .brand-actions button:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.06);
        }

        .icon-nav-bar {
            background: #FFFFFF;
            border-top: 1px solid var(--color-border-soft);
            padding: 8px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            position: relative;
        }

        .icon-nav-bar::-webkit-scrollbar {
            display: none;
        }

        .icon-nav-inner {
            display: flex;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            flex-wrap: nowrap;
            justify-content: flex-start;
        }

        .icon-nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            padding: 10px 14px;
            border-radius: var(--radius-card);
            text-decoration: none;
            color: var(--color-text-dark);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            transition: color var(--transition-fast), background var(--transition-fast);
            min-width: 64px;
            flex-shrink: 0;
        }

        .icon-nav-item i {
            font-size: 20px;
            transition: color var(--transition-fast);
            color: var(--color-text-dark);
        }

        .icon-nav-item:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.04);
        }

        .icon-nav-item:hover i {
            color: var(--color-warm-copper);
        }

        .icon-nav-item.active {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.08);
        }

        .icon-nav-item.active i {
            color: var(--color-warm-copper);
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            border: none;
            transition: background var(--transition-fast), box-shadow var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--color-copper-hover);
            box-shadow: 0 0 0 1px var(--color-copper-hover);
            color: #FFFFFF;
        }

        .btn-primary:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
        }

        .btn-primary:active {
            background: var(--color-copper-active);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--color-warm-copper);
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            border: 1px solid var(--color-warm-copper);
            transition: background var(--transition-fast), color var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
        }

        .btn-outline:hover {
            background: rgba(176, 141, 87, 0.08);
            color: var(--color-warm-copper);
        }

        .btn-outline:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
        }

        /* Section spacing */
        .section {
            padding: var(--section-gap-desktop) 0;
        }

        .section-alt {
            background: #FFFFFF;
            padding: var(--section-gap-desktop) 0;
        }

        .section-deep {
            background: var(--color-deep-charcoal);
            color: var(--color-text-inverse);
            padding: var(--section-gap-desktop) 0;
        }

        /* Narrow banner hero */
        .narrow-banner {
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border-soft);
            padding: 48px 0;
            text-align: center;
        }

        .narrow-banner .banner-tag {
            display: inline-block;
            background: rgba(176, 141, 87, 0.1);
            color: var(--color-warm-copper);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        .narrow-banner h1 {
            font-size: 42px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.15;
            color: var(--color-deep-charcoal);
            margin: 0 0 12px 0;
        }

        .narrow-banner .banner-subtitle {
            font-size: 17px;
            color: var(--color-text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* Image wall grid */
        .image-wall-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .image-wall-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            aspect-ratio: 4/3;
            cursor: pointer;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-smooth), transform var(--transition-smooth);
            background: #E5E0D9;
            border: 1px solid var(--color-border-soft);
        }

        .image-wall-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .image-wall-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .image-wall-card:hover img {
            transform: scale(1.04);
        }

        .image-wall-card .card-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent 0%, rgba(28, 26, 23, 0.75) 50%, rgba(28, 26, 23, 0.92) 100%);
            padding: 40px 20px 20px 20px;
            color: #FFFFFF;
        }

        .image-wall-card .card-overlay h3 {
            font-size: 18px;
            font-weight: 600;
            margin: 0 0 6px 0;
            color: #FFFFFF;
            letter-spacing: 0;
            line-height: 1.3;
        }

        .image-wall-card .card-overlay p {
            font-size: 13px;
            margin: 0;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.5;
            letter-spacing: 0.1px;
        }

        /* Stats highlight row */
        .stats-highlight-row {
            display: grid;
            grid-template-columns: 5fr 3fr 4fr;
            gap: 24px;
            align-items: start;
        }

        .stats-card {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-smooth);
            text-align: center;
        }

        .stats-card:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .stats-card .stats-icon {
            font-size: 28px;
            color: var(--color-warm-copper);
            margin-bottom: 12px;
        }

        .stats-card .stats-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-deep-charcoal);
            letter-spacing: -0.5px;
            line-height: 1;
            margin-bottom: 6px;
        }

        .stats-card .stats-label {
            font-size: 14px;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        .stats-card .stats-desc {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: 8px;
            line-height: 1.5;
        }

        /* Dual column */
        .dual-column {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .dual-column .col-text h2 {
            font-size: 32px;
            font-weight: 650;
            letter-spacing: -0.3px;
            line-height: 1.25;
            color: var(--color-deep-charcoal);
            margin: 0 0 16px 0;
        }

        .dual-column .col-text p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text-dark);
            margin: 0 0 20px 0;
        }

        .dual-column .col-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border-soft);
            box-shadow: var(--shadow-card);
        }

        .dual-column .col-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        .data-points-row {
            display: flex;
            gap: 24px;
            margin-top: 16px;
        }

        .data-point {
            text-align: center;
            flex: 1;
        }

        .data-point .dp-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-warm-copper);
            letter-spacing: -0.3px;
            line-height: 1;
        }

        .data-point .dp-label {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* Process steps */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-smooth);
            position: relative;
        }

        .process-step:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 12px;
        }

        .process-step h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-deep-charcoal);
            margin: 0 0 8px 0;
        }

        .process-step p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* Deep content */
        .deep-content-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .deep-content-block .content-text h2 {
            font-size: 30px;
            font-weight: 650;
            letter-spacing: -0.3px;
            line-height: 1.3;
            color: var(--color-deep-charcoal);
            margin: 0 0 16px 0;
        }

        .deep-content-block .content-text p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-text-dark);
            margin: 0 0 16px 0;
        }

        .deep-content-block .content-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border-soft);
            box-shadow: var(--shadow-card);
        }

        .deep-content-block .content-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* Brand intro */
        .brand-intro-block {
            background: #FFFFFF;
            border-top: 1px solid var(--color-border-soft);
            border-bottom: 1px solid var(--color-border-soft);
            padding: 60px 0;
        }

        .brand-intro-block h2 {
            font-size: 28px;
            font-weight: 650;
            letter-spacing: -0.3px;
            color: var(--color-deep-charcoal);
            margin: 0 0 16px 0;
            text-align: center;
        }

        .brand-intro-block .brand-intro-text {
            max-width: 800px;
            margin: 0 auto;
            font-size: 15px;
            line-height: 1.9;
            color: var(--color-text-dark);
            text-align: center;
        }

        .social-proof-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .social-proof-item {
            text-align: center;
            padding: 20px 16px;
            background: var(--color-warm-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-soft);
        }

        .social-proof-item .sp-num {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-warm-copper);
            letter-spacing: -0.3px;
            line-height: 1;
        }

        .social-proof-item .sp-label {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: 6px;
        }

        /* FAQ */
        .faq-list {
            max-width: 750px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border-soft);
            padding: 20px 0;
            transition: border-color var(--transition-fast);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--color-border-soft);
        }

        .faq-item .faq-q {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0 0 8px 0;
            cursor: default;
        }

        .faq-item .faq-a {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.7;
        }

        .faq-more-link {
            text-align: center;
            margin-top: 24px;
        }

        .faq-more-link a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-warm-copper);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
        }

        .faq-more-link a:hover {
            gap: 10px;
        }

        /* CTA section */
        .cta-section {
            text-align: center;
            padding: 60px 0;
        }

        .cta-section h2 {
            font-size: 30px;
            font-weight: 650;
            letter-spacing: -0.3px;
            color: var(--color-deep-charcoal);
            margin: 0 0 12px 0;
        }

        .cta-section p {
            font-size: 16px;
            color: var(--color-text-muted);
            margin: 0 0 24px 0;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn-group {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Sticky bottom bar */
        .sticky-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--color-deep-charcoal);
            color: #FFFFFF;
            padding: 14px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            z-index: 999;
            box-shadow: var(--shadow-sticky);
            transform: translateY(100%);
            opacity: 0;
            transition: transform var(--transition-sticky), opacity var(--transition-sticky);
            pointer-events: none;
        }

        .sticky-bottom-bar.visible {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }

        .sticky-bottom-bar .bar-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .sticky-bottom-bar .bar-brand {
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.3px;
            color: #FFFFFF;
            white-space: nowrap;
        }

        .sticky-bottom-bar .bar-tagline {
            font-size: 13px;
            color: var(--color-footer-link);
            white-space: nowrap;
        }

        .sticky-bottom-bar .btn-primary {
            white-space: nowrap;
            font-size: 14px;
            padding: 10px 20px;
        }

        /* Footer */
        .site-footer {
            background: var(--color-deep-charcoal);
            color: var(--color-footer-link);
            padding: 48px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 16px 0;
            letter-spacing: 0.3px;
        }

        .footer-col p {
            font-size: 13px;
            line-height: 1.7;
            margin: 0;
            color: var(--color-footer-link);
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-footer-link);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--color-warm-copper);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 32px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            font-size: 12px;
            color: var(--color-footer-link);
            justify-content: center;
            text-align: center;
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        .footer-links-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .footer-links-row a {
            font-size: 12px;
            color: var(--color-footer-link);
            white-space: nowrap;
        }

        .footer-links-row a:hover {
            color: var(--color-warm-copper);
        }

        /* Section title */
        .section-title {
            text-align: center;
            margin-bottom: 36px;
        }

        .section-title h2 {
            font-size: 32px;
            font-weight: 650;
            letter-spacing: -0.3px;
            color: var(--color-deep-charcoal);
            margin: 0 0 10px 0;
        }

        .section-title p {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 0;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-title-left {
            margin-bottom: 36px;
        }

        .section-title-left h2 {
            font-size: 32px;
            font-weight: 650;
            letter-spacing: -0.3px;
            color: var(--color-deep-charcoal);
            margin: 0 0 10px 0;
        }

        .section-title-left p {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 0;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .image-wall-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stats-highlight-row {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stats-highlight-row .stats-card:last-child {
                grid-column: 1 / -1;
            }
            .dual-column {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .dual-column .col-image {
                order: -1;
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .deep-content-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .deep-content-block .content-image {
                order: -1;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .social-proof-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .narrow-banner h1 {
                font-size: 34px;
            }
            .section {
                padding: 56px 0;
            }
            .section-alt {
                padding: 56px 0;
            }
            .section-deep {
                padding: 56px 0;
            }
            .icon-nav-item {
                padding: 8px 10px;
                font-size: 12px;
                min-width: 52px;
            }
            .icon-nav-item i {
                font-size: 18px;
            }
            .icon-nav-inner {
                padding-left: 12px;
                padding-right: 12px;
                gap: 2px;
            }
        }

        @media (max-width: 768px) {
            .image-wall-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .image-wall-card {
                aspect-ratio: 16/9;
            }
            .stats-highlight-row {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stats-highlight-row .stats-card:last-child {
                grid-column: auto;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .dual-column {
                gap: 24px;
            }
            .dual-column .col-text h2 {
                font-size: 26px;
            }
            .deep-content-block .content-text h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .social-proof-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .narrow-banner {
                padding: 36px 16px;
            }
            .narrow-banner h1 {
                font-size: 28px;
            }
            .narrow-banner .banner-subtitle {
                font-size: 15px;
            }
            .section {
                padding: 40px 0;
            }
            .section-alt {
                padding: 40px 0;
            }
            .section-deep {
                padding: 40px 0;
            }
            .brand-intro-block {
                padding: 40px 0;
            }
            .cta-section {
                padding: 40px 0;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .container-main {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-row {
                padding-left: 16px;
                padding-right: 16px;
            }
            .icon-nav-inner {
                padding-left: 8px;
                padding-right: 8px;
            }
            .icon-nav-item {
                padding: 6px 8px;
                font-size: 11px;
                min-width: 44px;
            }
            .icon-nav-item i {
                font-size: 16px;
            }
            .sticky-bottom-bar {
                padding: 10px 16px;
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .sticky-bottom-bar .bar-info {
                flex-direction: column;
                gap: 4px;
            }
            .sticky-bottom-bar .btn-primary {
                width: 100%;
                justify-content: center;
            }
            .data-points-row {
                flex-wrap: wrap;
                gap: 16px;
            }
            .btn-primary,
            .btn-outline {
                padding: 10px 20px;
                font-size: 14px;
            }
            .section-title h2 {
                font-size: 26px;
            }
            .section-title-left h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .social-proof-row {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .narrow-banner h1 {
                font-size: 24px;
            }
            .image-wall-card .card-overlay h3 {
                font-size: 16px;
            }
            .image-wall-card .card-overlay p {
                font-size: 12px;
            }
            .stats-card .stats-number {
                font-size: 28px;
            }
            .footer-bottom {
                gap: 12px;
                font-size: 11px;
            }
        }

/* roulang page: category1 */
:root {
            --color-deep-charcoal: #1C1A17;
            --color-warm-copper: #B08D57;
            --color-copper-hover: #9A7848;
            --color-copper-active: #7C5E36;
            --color-warm-white: #F7F5F1;
            --color-text-dark: #2A2723;
            --color-text-muted: #6B645C;
            --color-text-inverse: #F7F5F1;
            --color-border-soft: #E5E0D9;
            --color-footer-link: #CFC9C1;
            --color-white: #FFFFFF;
            --radius-card: 8px;
            --radius-img: 6px;
            --radius-btn: 4px;
            --shadow-card: 0 2px 8px rgba(28, 26, 23, 0.04);
            --shadow-card-hover: 0 8px 24px rgba(28, 26, 23, 0.08);
            --shadow-sticky: 0 -4px 16px rgba(28, 26, 23, 0.12);
            --transition-fast: 150ms ease-out;
            --transition-smooth: 180ms ease-out;
            --transition-sticky: 140ms ease-out;
            --max-width: 1200px;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 48px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            background-color: var(--color-warm-white);
            color: var(--color-text-dark);
            line-height: 1.8;
            font-size: 15px;
            font-weight: 400;
            letter-spacing: 0.2px;
            margin: 0;
            padding: 0;
            padding-bottom: 72px;
            overflow-x: hidden;
        }

        a {
            color: var(--color-warm-copper);
            text-decoration: none;
            transition: color var(--transition-fast), border-color var(--transition-fast);
        }
        a:hover {
            color: var(--color-copper-hover);
        }
        a:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input {
            font-family: inherit;
        }

        .container-main {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border-soft);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-deep-charcoal);
            letter-spacing: -0.5px;
            text-decoration: none;
            white-space: nowrap;
        }
        .brand-logo:hover {
            color: var(--color-warm-copper);
        }
        .brand-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .brand-actions button {
            background: none;
            border: none;
            color: var(--color-text-dark);
            font-size: 18px;
            padding: 6px;
            border-radius: 50%;
            transition: color var(--transition-fast), background var(--transition-fast);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .brand-actions button:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.06);
        }
        .icon-nav-bar {
            background: #FFFFFF;
            border-top: 1px solid var(--color-border-soft);
            padding: 8px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            position: relative;
        }
        .icon-nav-bar::-webkit-scrollbar {
            display: none;
        }
        .icon-nav-inner {
            display: flex;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            flex-wrap: nowrap;
            justify-content: flex-start;
        }
        .icon-nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            padding: 10px 14px;
            border-radius: var(--radius-card);
            text-decoration: none;
            color: var(--color-text-dark);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            transition: color var(--transition-fast), background var(--transition-fast);
            min-width: 64px;
            flex-shrink: 0;
        }
        .icon-nav-item i {
            font-size: 20px;
            transition: color var(--transition-fast);
            color: var(--color-text-dark);
        }
        .icon-nav-item:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.04);
        }
        .icon-nav-item:hover i {
            color: var(--color-warm-copper);
        }
        .icon-nav-item.active {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.08);
        }
        .icon-nav-item.active i {
            color: var(--color-warm-copper);
        }

        /* Hero Banner */
        .category-hero-banner {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            padding: 64px 0;
            min-height: 260px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .category-hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(28, 26, 23, 0.72) 0%, rgba(28, 26, 23, 0.55) 100%);
            z-index: 1;
        }
        .category-hero-content {
            position: relative;
            z-index: 2;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        .category-hero-content h1 {
            font-size: 42px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.15;
            color: var(--color-text-inverse);
            margin: 0 0 12px 0;
            animation: fadeInUp 0.6s ease-out;
        }
        .category-hero-content .hero-tagline {
            font-size: 18px;
            color: rgba(247, 245, 241, 0.85);
            margin: 0;
            font-weight: 400;
            max-width: 600px;
            line-height: 1.6;
            animation: fadeInUp 0.7s ease-out;
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(18px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Section */
        .section {
            padding: var(--section-gap-desktop) 0;
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-bg-white {
            background: #FFFFFF;
        }
        .section-bg-dark {
            background: var(--color-deep-charcoal);
            color: var(--color-text-inverse);
        }

        /* Section Title */
        .section-title {
            font-size: 30px;
            font-weight: 650;
            letter-spacing: -0.3px;
            color: var(--color-text-dark);
            margin: 0 0 8px 0;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 0 0 32px 0;
            line-height: 1.6;
        }

        /* News List */
        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
            align-items: start;
        }
        .news-list-col {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-item {
            display: flex;
            gap: 16px;
            padding: 20px 16px;
            border-bottom: 1px solid var(--color-border-soft);
            transition: all var(--transition-smooth);
            position: relative;
            border-radius: 4px;
            cursor: pointer;
        }
        .news-item:hover {
            background: rgba(176, 141, 87, 0.03);
            padding-left: 20px;
        }
        .news-item:hover::before {
            content: '';
            position: absolute;
            left: 0;
            top: 12px;
            bottom: 12px;
            width: 2px;
            background: var(--color-warm-copper);
            border-radius: 1px;
            transition: all var(--transition-smooth);
        }
        .news-date-badge {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            border-radius: var(--radius-card);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            line-height: 1.1;
        }
        .news-date-badge .day {
            font-size: 20px;
            line-height: 1;
        }
        .news-date-badge .month {
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .news-item-body {
            flex: 1;
            min-width: 0;
        }
        .news-item-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0 0 6px 0;
            line-height: 1.4;
        }
        .news-item-body h3 a {
            color: var(--color-text-dark);
            text-decoration: none;
        }
        .news-item-body h3 a:hover {
            color: var(--color-warm-copper);
        }
        .news-item-body .news-summary {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0 0 8px 0;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .read-more-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-warm-copper);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-fast);
        }
        .read-more-link i {
            transition: transform var(--transition-fast);
            font-size: 12px;
        }
        .read-more-link:hover i {
            transform: translateX(3px);
        }
        .read-more-link:hover {
            color: var(--color-copper-hover);
        }

        /* Sidebar */
        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 140px;
        }
        .sidebar-card {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
        }
        .sidebar-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0 0 14px 0;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--color-border-soft);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud .tag {
            display: inline-block;
            padding: 6px 14px;
            background: var(--color-warm-white);
            border: 1px solid var(--color-border-soft);
            border-radius: 20px;
            font-size: 13px;
            color: var(--color-text-dark);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .tag-cloud .tag:hover {
            background: var(--color-warm-copper);
            color: #FFFFFF;
            border-color: var(--color-warm-copper);
        }
        .sidebar-mini-news {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-mini-news a {
            font-size: 14px;
            color: var(--color-text-dark);
            text-decoration: none;
            line-height: 1.5;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--color-border-soft);
            transition: color var(--transition-fast);
        }
        .sidebar-mini-news a:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .sidebar-mini-news a:hover {
            color: var(--color-warm-copper);
        }

        /* Selling Points */
        .selling-points-trio {
            display: grid;
            grid-template-columns: 5fr 3fr 4fr;
            gap: 20px;
            align-items: stretch;
        }
        .sp-card {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .sp-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .sp-card .sp-icon {
            font-size: 28px;
            color: var(--color-warm-copper);
            margin-bottom: 4px;
        }
        .sp-card h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0;
            line-height: 1.3;
        }
        .sp-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* Scene Demo */
        .scene-demo {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .scene-text h3 {
            font-size: 28px;
            font-weight: 650;
            color: var(--color-text-dark);
            margin: 0 0 16px 0;
            line-height: 1.3;
        }
        .scene-text p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin: 0 0 20px 0;
        }
        .scene-data-points {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }
        .scene-data-point {
            text-align: center;
            min-width: 80px;
        }
        .scene-data-point .dp-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-warm-copper);
            line-height: 1;
        }
        .scene-data-point .dp-label {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: 4px;
        }
        .scene-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .scene-image img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-card);
        }

        /* Data Cards */
        .data-cards-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .data-card {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }
        .data-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .data-card .dc-number {
            font-size: 48px;
            font-weight: 700;
            color: var(--color-warm-copper);
            line-height: 1;
            margin-bottom: 8px;
        }
        .data-card .dc-label {
            font-size: 15px;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* Deep Content */
        .deep-content-alt {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .deep-content-alt.reverse {
            direction: rtl;
        }
        .deep-content-alt.reverse>* {
            direction: ltr;
        }
        .deep-content-text h3 {
            font-size: 26px;
            font-weight: 650;
            color: var(--color-text-dark);
            margin: 0 0 14px 0;
            line-height: 1.3;
        }
        .deep-content-text p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin: 0;
        }
        .deep-content-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .deep-content-image img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-card);
        }

        /* Social Proof */
        .social-proof-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .social-proof-item {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            padding: 24px 16px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }
        .social-proof-item:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .social-proof-item .sp-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-warm-copper);
            line-height: 1;
            margin-bottom: 6px;
        }
        .social-proof-item .sp-label {
            font-size: 14px;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 800px;
        }
        .faq-item {
            padding: 0;
        }
        .faq-item .faq-q {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0 0 8px 0;
            line-height: 1.5;
        }
        .faq-item .faq-a {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.7;
        }
        .faq-more-link {
            display: inline-block;
            margin-top: 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-warm-copper);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .faq-more-link:hover {
            color: var(--color-copper-hover);
        }

        /* CTA */
        .cta-section {
            background: var(--color-deep-charcoal);
            padding: 56px 0;
            text-align: center;
            color: var(--color-text-inverse);
        }
        .cta-section h3 {
            font-size: 30px;
            font-weight: 700;
            margin: 0 0 12px 0;
            line-height: 1.3;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(247, 245, 241, 0.8);
            margin: 0 0 24px 0;
            line-height: 1.6;
        }
        .btn-primary {
            display: inline-block;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            text-decoration: none;
            transition: all var(--transition-fast);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--color-copper-hover);
            box-shadow: 0 0 0 1px var(--color-copper-hover);
            color: #FFFFFF;
            transform: translateY(-1px);
        }
        .btn-primary:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 3px;
        }
        .btn-primary:active {
            background: var(--color-copper-active);
            transform: translateY(0);
        }
        .btn-secondary {
            display: inline-block;
            background: transparent;
            color: var(--color-warm-copper);
            padding: 11px 26px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            text-decoration: none;
            border: 1px solid var(--color-warm-copper);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: rgba(176, 141, 87, 0.08);
            color: var(--color-warm-copper);
        }
        .btn-secondary:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 3px;
        }

        /* Sticky Bottom Bar */
        .sticky-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--color-deep-charcoal);
            color: var(--color-text-inverse);
            z-index: 999;
            padding: 14px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--shadow-sticky);
            opacity: 0;
            transform: translateY(100%);
            transition: opacity var(--transition-sticky), transform var(--transition-sticky);
            pointer-events: none;
        }
        .sticky-bottom-bar.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .sticky-bottom-bar .sticky-brand {
            font-weight: 600;
            font-size: 15px;
            white-space: nowrap;
        }
        .sticky-bottom-bar .sticky-tagline {
            font-size: 13px;
            color: rgba(247, 245, 241, 0.75);
            margin-left: 12px;
            white-space: nowrap;
        }
        .sticky-bottom-bar .btn-primary {
            padding: 10px 22px;
            font-size: 14px;
            flex-shrink: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--color-deep-charcoal);
            color: var(--color-text-inverse);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 14px 0;
            letter-spacing: 0.5px;
        }
        .footer-col p {
            font-size: 13px;
            color: var(--color-footer-link);
            line-height: 1.7;
            margin: 0;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-footer-link);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-warm-copper);
        }
        .footer-bottom {
            border-top: 1px solid rgba(229, 224, 217, 0.2);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--color-footer-link);
            align-items: center;
            justify-content: space-between;
        }
        .footer-bottom span {
            white-space: nowrap;
        }
        .footer-links-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-links-row a {
            font-size: 12px;
            color: var(--color-footer-link);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-links-row a:hover {
            color: var(--color-warm-copper);
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .category-hero-content h1 {
                font-size: 32px;
            }
            .category-hero-content .hero-tagline {
                font-size: 16px;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .news-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }
            .news-sidebar .sidebar-card {
                flex: 1;
                min-width: 240px;
            }
            .selling-points-trio {
                grid-template-columns: 1fr 1fr;
            }
            .selling-points-trio .sp-card:last-child {
                grid-column: span 2;
            }
            .scene-demo {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .data-cards-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-cards-row .data-card:last-child {
                grid-column: span 2;
            }
            .deep-content-alt {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .deep-content-alt.reverse {
                direction: ltr;
            }
            .social-proof-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .icon-nav-inner {
                padding-left: 12px;
                padding-right: 12px;
                gap: 2px;
            }
            .icon-nav-item {
                padding: 8px 10px;
                font-size: 12px;
                min-width: 52px;
            }
            .icon-nav-item i {
                font-size: 18px;
            }
        }

        @media (max-width: 767px) {
            .category-hero-content h1 {
                font-size: 26px;
            }
            .category-hero-content .hero-tagline {
                font-size: 14px;
            }
            .category-hero-banner {
                padding: 40px 0;
                min-height: 180px;
            }
            .news-item {
                flex-direction: column;
                gap: 10px;
                padding: 16px 12px;
            }
            .news-date-badge {
                width: 44px;
                height: 44px;
                font-size: 10px;
            }
            .news-date-badge .day {
                font-size: 16px;
            }
            .news-item-body h3 {
                font-size: 16px;
            }
            .selling-points-trio {
                grid-template-columns: 1fr;
            }
            .selling-points-trio .sp-card:last-child {
                grid-column: span 1;
            }
            .data-cards-row {
                grid-template-columns: 1fr;
            }
            .data-cards-row .data-card:last-child {
                grid-column: span 1;
            }
            .social-proof-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .social-proof-item .sp-num {
                font-size: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .sticky-bottom-bar {
                flex-direction: column;
                gap: 8px;
                text-align: center;
                padding: 12px 16px;
            }
            .sticky-bottom-bar .sticky-tagline {
                margin-left: 0;
            }
            .section {
                padding: 40px 0;
            }
            .section-sm {
                padding: 32px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .container-main {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-row {
                padding-left: 16px;
                padding-right: 16px;
            }
            .icon-nav-inner {
                padding-left: 8px;
                padding-right: 8px;
            }
            .scene-data-points {
                gap: 16px;
            }
            .scene-data-point .dp-num {
                font-size: 26px;
            }
            .cta-section h3 {
                font-size: 24px;
            }
            .data-card .dc-number {
                font-size: 36px;
            }
        }

        @media (max-width: 520px) {
            .category-hero-content h1 {
                font-size: 22px;
            }
            .category-hero-banner {
                padding: 32px 0;
                min-height: 150px;
            }
            .news-sidebar {
                flex-direction: column;
            }
            .news-sidebar .sidebar-card {
                min-width: auto;
            }
            .social-proof-row {
                grid-template-columns: 1fr;
            }
            .btn-primary,
            .btn-secondary {
                padding: 10px 20px;
                font-size: 14px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .icon-nav-item {
                padding: 6px 8px;
                font-size: 11px;
                min-width: 44px;
            }
            .icon-nav-item i {
                font-size: 16px;
            }
        }

/* roulang page: category4 */
:root {
            --color-deep-charcoal: #1C1A17;
            --color-warm-copper: #B08D57;
            --color-copper-hover: #9A7848;
            --color-copper-active: #7C5E36;
            --color-warm-white: #F7F5F1;
            --color-text-dark: #2A2723;
            --color-text-muted: #6B645C;
            --color-text-inverse: #F7F5F1;
            --color-border-soft: #E5E0D9;
            --color-footer-link: #CFC9C1;
            --radius-card: 8px;
            --radius-img: 6px;
            --radius-btn: 4px;
            --shadow-card: 0 2px 8px rgba(28, 26, 23, 0.04);
            --shadow-card-hover: 0 8px 24px rgba(28, 26, 23, 0.08);
            --shadow-sticky: 0 -4px 16px rgba(28, 26, 23, 0.12);
            --transition-fast: 150ms ease-out;
            --transition-smooth: 180ms ease-out;
            --transition-sticky: 140ms ease-out;
            --max-width: 1200px;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 48px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--color-warm-white);
            color: var(--color-text-dark);
            line-height: 1.8;
            font-size: 15px;
            font-weight: 400;
            letter-spacing: 0.2px;
            margin: 0;
            padding: 0;
            padding-bottom: 72px;
            overflow-x: hidden;
        }

        a {
            color: var(--color-warm-copper);
            text-decoration: none;
            transition: color var(--transition-fast), border-color var(--transition-fast);
        }

        a:hover {
            color: var(--color-copper-hover);
        }

        a:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        .container-main {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header & Navigation */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border-soft);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-deep-charcoal);
            letter-spacing: -0.5px;
            text-decoration: none;
            white-space: nowrap;
        }

        .brand-logo:hover {
            color: var(--color-warm-copper);
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .brand-actions button {
            background: none;
            border: none;
            color: var(--color-text-dark);
            font-size: 18px;
            padding: 6px;
            border-radius: 50%;
            transition: color var(--transition-fast), background var(--transition-fast);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .brand-actions button:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.06);
        }

        .icon-nav-bar {
            background: #FFFFFF;
            border-top: 1px solid var(--color-border-soft);
            padding: 8px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            position: relative;
        }

        .icon-nav-bar::-webkit-scrollbar {
            display: none;
        }

        .icon-nav-inner {
            display: flex;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            flex-wrap: nowrap;
            justify-content: flex-start;
        }

        .icon-nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            padding: 10px 14px;
            border-radius: var(--radius-card);
            text-decoration: none;
            color: var(--color-text-dark);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            transition: color var(--transition-fast), background var(--transition-fast);
            min-width: 64px;
            flex-shrink: 0;
        }

        .icon-nav-item i {
            font-size: 20px;
            transition: color var(--transition-fast);
            color: var(--color-text-dark);
        }

        .icon-nav-item:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.04);
        }

        .icon-nav-item:hover i {
            color: var(--color-warm-copper);
        }

        .icon-nav-item.active {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.08);
        }

        .icon-nav-item.active i {
            color: var(--color-warm-copper);
        }

        /* Category Banner */
        .category-banner {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 80px 0 64px;
            min-height: 280px;
            display: flex;
            align-items: center;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(28, 26, 23, 0.72) 0%, rgba(28, 26, 23, 0.55) 100%);
            z-index: 1;
        }

        .category-banner-content {
            position: relative;
            z-index: 2;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }

        .category-banner-content h1 {
            font-size: 44px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.15;
            color: var(--color-text-inverse);
            margin: 0 0 12px;
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        .category-banner-content .banner-subtitle {
            font-size: 18px;
            color: rgba(247, 245, 241, 0.82);
            font-weight: 400;
            line-height: 1.6;
            max-width: 640px;
        }

        /* Alternating Section */
        .section-alternating {
            padding: var(--section-gap-desktop) 0;
        }

        .alternating-group {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
            margin-bottom: 64px;
        }

        .alternating-group:last-child {
            margin-bottom: 0;
        }

        .alternating-group.reverse .alt-image-col {
            order: 2;
        }

        .alternating-group.reverse .alt-text-col {
            order: 1;
        }

        .alt-image-col {
            order: 1;
            border-radius: var(--radius-img);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-smooth);
        }

        .alt-image-col:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .alt-image-col img {
            width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-img);
            transition: transform var(--transition-smooth);
        }

        .alt-image-col:hover img {
            transform: scale(1.02);
        }

        .alt-text-col {
            order: 2;
            padding: 8px 0;
        }

        .alt-text-col .group-number {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-warm-copper);
            letter-spacing: 1.5px;
            text-transform: uppercase;
            margin-bottom: 10px;
            padding: 4px 10px;
            border: 1px solid var(--color-warm-copper);
            border-radius: 20px;
            background: rgba(176, 141, 87, 0.04);
        }

        .alt-text-col h3 {
            font-size: 26px;
            font-weight: 650;
            color: var(--color-text-dark);
            margin: 0 0 16px;
            line-height: 1.3;
            letter-spacing: -0.3px;
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        .alt-text-col p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-text-muted);
            margin: 0 0 20px;
            letter-spacing: 0.2px;
        }

        .alt-text-col .read-more-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-warm-copper);
            text-decoration: none;
            transition: color var(--transition-fast), gap var(--transition-fast);
            letter-spacing: 0.3px;
        }

        .alt-text-col .read-more-link i {
            font-size: 13px;
            transition: transform var(--transition-fast);
        }

        .alt-text-col .read-more-link:hover {
            color: var(--color-copper-hover);
            gap: 12px;
        }

        .alt-text-col .read-more-link:hover i {
            transform: translateX(3px);
        }

        /* Stats Highlight */
        .stats-highlight-section {
            padding: 60px 0;
            background: #FFFFFF;
            border-top: 1px solid var(--color-border-soft);
            border-bottom: 1px solid var(--color-border-soft);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            text-align: center;
        }

        .stat-card {
            padding: 28px 20px;
            border-radius: var(--radius-card);
            background: var(--color-warm-white);
            border: 1px solid var(--color-border-soft);
            transition: box-shadow var(--transition-smooth);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .stat-number {
            font-size: 40px;
            font-weight: 700;
            color: var(--color-warm-copper);
            letter-spacing: -1px;
            line-height: 1;
            margin-bottom: 8px;
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        .stat-label {
            font-size: 14px;
            color: var(--color-text-muted);
            font-weight: 500;
            letter-spacing: 0.3px;
        }

        /* CTA Section */
        .cta-inline-section {
            padding: 64px 0;
            text-align: center;
            background: var(--color-deep-charcoal);
            border-radius: 0;
            margin: 0;
        }

        .cta-inline-section h2 {
            font-size: 30px;
            font-weight: 650;
            color: var(--color-text-inverse);
            margin: 0 0 12px;
            letter-spacing: -0.3px;
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        .cta-inline-section p {
            font-size: 16px;
            color: rgba(247, 245, 241, 0.75);
            margin: 0 0 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-primary {
            display: inline-block;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            padding: 13px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            letter-spacing: 0.8px;
            text-decoration: none;
            transition: background var(--transition-fast), box-shadow var(--transition-fast);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--color-copper-hover);
            box-shadow: 0 0 0 1px var(--color-copper-hover);
            color: #FFFFFF;
        }

        .btn-primary:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 3px;
        }

        .btn-primary:active {
            background: var(--color-copper-active);
        }

        /* Bottom Sticky Bar */
        .sticky-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--color-deep-charcoal);
            padding: 16px 24px;
            z-index: 999;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--shadow-sticky);
            opacity: 0;
            transform: translateY(100%);
            transition: opacity var(--transition-sticky), transform var(--transition-sticky);
            pointer-events: none;
        }

        .sticky-bottom-bar.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        .sticky-bottom-bar .sticky-brand {
            color: var(--color-text-inverse);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .sticky-bottom-bar .sticky-cta-text {
            color: rgba(247, 245, 241, 0.7);
            font-size: 13px;
            margin-left: 12px;
            white-space: nowrap;
        }

        .sticky-bottom-bar .btn-primary {
            padding: 10px 22px;
            font-size: 14px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .sticky-left-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: var(--color-deep-charcoal);
            color: var(--color-text-inverse);
            padding: 56px 0 32px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(229, 224, 217, 0.15);
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-inverse);
            margin: 0 0 16px;
            letter-spacing: 0.5px;
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        .footer-col p {
            font-size: 13px;
            color: var(--color-footer-link);
            line-height: 1.7;
            margin: 0;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-footer-link);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--color-warm-copper);
        }

        .footer-bottom {
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 12px;
            color: var(--color-footer-link);
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        .footer-links-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-links-row a {
            font-size: 12px;
            color: var(--color-footer-link);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-links-row a:hover {
            color: var(--color-warm-copper);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .category-banner-content h1 {
                font-size: 34px;
            }
            .alternating-group {
                grid-template-columns: 1fr;
                gap: 32px;
                margin-bottom: 48px;
            }
            .alternating-group.reverse .alt-image-col {
                order: 1;
            }
            .alternating-group.reverse .alt-text-col {
                order: 2;
            }
            .alt-text-col h3 {
                font-size: 22px;
            }
            .stats-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
            .stat-number {
                font-size: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .section-alternating {
                padding: var(--section-gap-mobile) 0;
            }
        }

        @media (max-width: 768px) {
            .container-main {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-row {
                padding-left: 16px;
                padding-right: 16px;
            }
            .icon-nav-inner {
                padding-left: 12px;
                padding-right: 12px;
                gap: 2px;
            }
            .icon-nav-item {
                padding: 8px 10px;
                font-size: 12px;
                min-width: 52px;
            }
            .icon-nav-item i {
                font-size: 17px;
            }
            .category-banner {
                padding: 56px 0 40px;
                min-height: 200px;
            }
            .category-banner-content h1 {
                font-size: 28px;
            }
            .category-banner-content .banner-subtitle {
                font-size: 15px;
            }
            .alternating-group {
                grid-template-columns: 1fr;
                gap: 24px;
                margin-bottom: 40px;
            }
            .alt-text-col h3 {
                font-size: 20px;
            }
            .alt-text-col p {
                font-size: 14px;
                line-height: 1.75;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-number {
                font-size: 28px;
            }
            .stat-card {
                padding: 20px 14px;
            }
            .cta-inline-section {
                padding: 48px 20px;
            }
            .cta-inline-section h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .sticky-bottom-bar {
                padding: 12px 16px;
                flex-wrap: wrap;
                gap: 10px;
            }
            .sticky-bottom-bar .sticky-brand {
                font-size: 13px;
            }
            .sticky-bottom-bar .btn-primary {
                padding: 8px 16px;
                font-size: 13px;
            }
            .section-alternating {
                padding: var(--section-gap-mobile) 0;
            }
            .stats-highlight-section {
                padding: 40px 0;
            }
        }

        @media (max-width: 520px) {
            .category-banner-content h1 {
                font-size: 24px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 26px;
            }
            .alt-text-col h3 {
                font-size: 18px;
            }
            .sticky-bottom-bar {
                flex-direction: column;
                align-items: stretch;
                text-align: center;
            }
            .sticky-left-group {
                justify-content: center;
            }
            .sticky-bottom-bar .btn-primary {
                text-align: center;
                width: 100%;
            }
        }

/* roulang page: category6 */
:root {
            --color-deep-charcoal: #1C1A17;
            --color-warm-copper: #B08D57;
            --color-copper-hover: #9A7848;
            --color-copper-active: #7C5E36;
            --color-warm-white: #F7F5F1;
            --color-text-dark: #2A2723;
            --color-text-muted: #6B645C;
            --color-text-inverse: #F7F5F1;
            --color-border-soft: #E5E0D9;
            --color-footer-link: #CFC9C1;
            --radius-card: 8px;
            --radius-img: 6px;
            --radius-btn: 4px;
            --shadow-card: 0 2px 8px rgba(28, 26, 23, 0.04);
            --shadow-card-hover: 0 8px 24px rgba(28, 26, 23, 0.08);
            --shadow-sticky: 0 -4px 16px rgba(28, 26, 23, 0.12);
            --transition-fast: 150ms ease-out;
            --transition-smooth: 180ms ease-out;
            --transition-sticky: 140ms ease-out;
            --max-width: 1200px;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 48px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--color-warm-white);
            color: var(--color-text-dark);
            line-height: 1.8;
            font-size: 15px;
            font-weight: 400;
            letter-spacing: 0.2px;
            margin: 0;
            padding: 0;
            padding-bottom: 72px;
            overflow-x: hidden;
        }

        a {
            color: var(--color-warm-copper);
            text-decoration: none;
            transition: color var(--transition-fast), border-color var(--transition-fast);
        }

        a:hover {
            color: var(--color-copper-hover);
        }

        a:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        .container-main {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header & Navigation */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border-soft);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-deep-charcoal);
            letter-spacing: -0.5px;
            text-decoration: none;
            white-space: nowrap;
        }

        .brand-logo:hover {
            color: var(--color-warm-copper);
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .brand-actions button {
            background: none;
            border: none;
            color: var(--color-text-dark);
            font-size: 18px;
            padding: 6px;
            border-radius: 50%;
            transition: color var(--transition-fast), background var(--transition-fast);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .brand-actions button:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.06);
        }

        .icon-nav-bar {
            background: #FFFFFF;
            border-top: 1px solid var(--color-border-soft);
            padding: 8px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            position: relative;
        }

        .icon-nav-bar::-webkit-scrollbar {
            display: none;
        }

        .icon-nav-inner {
            display: flex;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            flex-wrap: nowrap;
            justify-content: flex-start;
        }

        .icon-nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            padding: 10px 14px;
            border-radius: var(--radius-card);
            text-decoration: none;
            color: var(--color-text-dark);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            transition: color var(--transition-fast), background var(--transition-fast);
            min-width: 64px;
            flex-shrink: 0;
        }

        .icon-nav-item i {
            font-size: 20px;
            transition: color var(--transition-fast);
            color: var(--color-text-dark);
        }

        .icon-nav-item:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.04);
        }

        .icon-nav-item:hover i {
            color: var(--color-warm-copper);
        }

        .icon-nav-item.active {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.08);
        }

        .icon-nav-item.active i {
            color: var(--color-warm-copper);
        }

        /* Section Spacing */
        .section-gap {
            margin-top: var(--section-gap-desktop);
            margin-bottom: var(--section-gap-desktop);
        }

        /* Hero Banner */
        .page-hero {
            position: relative;
            min-height: 38vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(28, 26, 23, 0.72) 0%, rgba(28, 26, 23, 0.55) 100%);
            z-index: 1;
        }

        .page-hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 40px 24px;
            max-width: 800px;
        }

        .page-hero-content h1 {
            font-size: 44px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.15;
            color: var(--color-text-inverse);
            margin: 0 0 12px 0;
        }

        .page-hero-content .hero-subtitle {
            font-size: 17px;
            color: rgba(247, 245, 241, 0.82);
            font-weight: 400;
            margin: 0;
            line-height: 1.6;
            max-width: 560px;
            margin: 0 auto;
        }

        /* Timeline Intro */
        .timeline-intro {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .timeline-intro h2 {
            font-size: 32px;
            font-weight: 650;
            letter-spacing: -0.3px;
            color: var(--color-deep-charcoal);
            margin: 0 0 16px 0;
        }

        .timeline-intro p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin: 0;
        }

        /* Timeline */
        .timeline-section {
            position: relative;
        }

        .timeline-wrapper {
            position: relative;
            max-width: 1000px;
            margin: 0 auto;
        }

        .timeline-line {
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border-soft);
            transform: translateX(-50%);
            z-index: 0;
        }

        .timeline-node {
            position: relative;
            display: flex;
            align-items: flex-start;
            margin-bottom: 48px;
            z-index: 1;
        }

        .timeline-node:nth-child(odd) {
            flex-direction: row;
            padding-right: calc(50% + 40px);
        }

        .timeline-node:nth-child(even) {
            flex-direction: row-reverse;
            padding-left: calc(50% + 40px);
        }

        .timeline-dot {
            position: absolute;
            left: 50%;
            top: 20px;
            width: 14px;
            height: 14px;
            background: var(--color-warm-copper);
            border-radius: 50%;
            transform: translate(-50%, -50%);
            z-index: 3;
            border: 3px solid var(--color-warm-white);
            box-shadow: 0 0 0 3px var(--color-warm-copper);
        }

        .timeline-card {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            flex: 1;
            transition: box-shadow var(--transition-smooth);
            position: relative;
        }

        .timeline-card:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .timeline-card .tl-date-badge {
            display: inline-block;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .timeline-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0 0 10px 0;
            line-height: 1.4;
        }

        .timeline-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin: 0 0 14px 0;
        }

        .timeline-card .tl-image {
            border-radius: var(--radius-img);
            overflow: hidden;
            margin-bottom: 14px;
            width: 100%;
            max-height: 200px;
        }

        .timeline-card .tl-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .read-more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-warm-copper);
            text-decoration: none;
            transition: gap var(--transition-fast), color var(--transition-fast);
        }

        .read-more-link i {
            font-size: 12px;
            transition: transform var(--transition-fast);
        }

        .read-more-link:hover {
            color: var(--color-copper-hover);
            gap: 10px;
        }

        .read-more-link:hover i {
            transform: translateX(3px);
        }

        /* Stats Cards */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px 20px;
            text-align: center;
            transition: box-shadow var(--transition-smooth);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .stat-card .stat-number {
            font-size: 38px;
            font-weight: 700;
            color: var(--color-warm-copper);
            line-height: 1.2;
            margin: 0 0 6px 0;
            letter-spacing: -0.5px;
        }

        .stat-card .stat-label {
            font-size: 13px;
            color: var(--color-text-muted);
            font-weight: 500;
            margin: 0;
        }

        /* Dual Column */
        .dual-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .dual-col-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .dual-col-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .dual-col-text h3 {
            font-size: 26px;
            font-weight: 600;
            color: var(--color-deep-charcoal);
            margin: 0 0 16px 0;
            line-height: 1.3;
        }

        .dual-col-text p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin: 0 0 16px 0;
        }

        /* Honor Cards */
        .honor-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .honor-card {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            text-align: center;
            transition: box-shadow var(--transition-smooth);
        }

        .honor-card:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .honor-card i {
            font-size: 32px;
            color: var(--color-warm-copper);
            margin-bottom: 12px;
            display: block;
        }

        .honor-card h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0 0 8px 0;
        }

        .honor-card p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* Related Cards */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition-smooth);
        }

        .related-card:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .related-card .related-img {
            height: 160px;
            overflow: hidden;
        }

        .related-card .related-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .related-card .related-body {
            padding: 16px;
        }

        .related-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0 0 6px 0;
        }

        .related-card p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin: 0 0 10px 0;
            line-height: 1.5;
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border-soft);
            padding: 20px 0;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--color-border-soft);
        }

        .faq-question {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0 0 8px 0;
            line-height: 1.5;
        }

        .faq-answer {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.8;
        }

        .faq-more-link {
            text-align: center;
            margin-top: 24px;
        }

        /* CTA Section */
        .cta-section {
            background: var(--color-deep-charcoal);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            color: var(--color-text-inverse);
        }

        .cta-section h3 {
            font-size: 28px;
            font-weight: 650;
            margin: 0 0 12px 0;
            color: var(--color-text-inverse);
        }

        .cta-section p {
            font-size: 15px;
            color: rgba(247, 245, 241, 0.8);
            margin: 0 0 24px 0;
            line-height: 1.7;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-primary {
            display: inline-block;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            text-decoration: none;
            border: none;
            transition: background var(--transition-fast), box-shadow var(--transition-fast);
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--color-copper-hover);
            box-shadow: 0 0 0 1px var(--color-copper-hover);
            color: #FFFFFF;
        }

        .btn-primary:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-block;
            background: transparent;
            color: var(--color-warm-copper);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            padding: 11px 26px;
            border-radius: var(--radius-btn);
            text-decoration: none;
            border: 1px solid var(--color-warm-copper);
            transition: background var(--transition-fast), color var(--transition-fast);
            cursor: pointer;
        }

        .btn-secondary:hover {
            background: rgba(176, 141, 87, 0.08);
            color: var(--color-warm-copper);
        }

        /* Footer */
        .site-footer {
            background: var(--color-deep-charcoal);
            color: var(--color-text-inverse);
            padding: 60px 0 0 0;
            margin-top: var(--section-gap-desktop);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px 40px;
            border-bottom: 1px solid rgba(229, 224, 217, 0.15);
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-inverse);
            margin: 0 0 16px 0;
            letter-spacing: 0.5px;
        }

        .footer-col p {
            font-size: 13px;
            color: var(--color-footer-link);
            line-height: 1.7;
            margin: 0;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-footer-link);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--color-warm-copper);
        }

        .footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 20px 24px 28px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 12px;
            color: var(--color-footer-link);
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        .footer-links-row {
            display: flex;
            gap: 16px;
            margin-left: auto;
        }

        .footer-links-row a {
            font-size: 12px;
            color: var(--color-footer-link);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-links-row a:hover {
            color: var(--color-warm-copper);
        }

        /* Sticky Bottom Bar */
        .sticky-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--color-deep-charcoal);
            z-index: 999;
            padding: 14px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--shadow-sticky);
            opacity: 0;
            transform: translateY(100%);
            transition: opacity var(--transition-sticky), transform var(--transition-sticky);
            pointer-events: none;
        }

        .sticky-bottom-bar.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        .sticky-bottom-bar .sticky-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--color-text-inverse);
            font-weight: 600;
            font-size: 15px;
            white-space: nowrap;
        }

        .sticky-bottom-bar .sticky-tagline {
            font-size: 13px;
            color: rgba(247, 245, 241, 0.7);
            font-weight: 400;
            white-space: nowrap;
        }

        .sticky-bottom-bar .btn-primary {
            padding: 10px 22px;
            font-size: 14px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        /* Section Title */
        .section-title {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-title h2 {
            font-size: 32px;
            font-weight: 650;
            letter-spacing: -0.3px;
            color: var(--color-deep-charcoal);
            margin: 0 0 10px 0;
        }

        .section-title .section-subtitle {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 0;
            max-width: 500px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .container-main {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-row {
                padding-left: 16px;
                padding-right: 16px;
            }
            .icon-nav-inner {
                padding-left: 12px;
                padding-right: 12px;
                gap: 2px;
            }
            .icon-nav-item {
                padding: 8px 10px;
                font-size: 12px;
                min-width: 52px;
            }
            .icon-nav-item i {
                font-size: 18px;
            }
            .page-hero-content h1 {
                font-size: 32px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .honor-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .dual-col {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .timeline-line {
                left: 28px;
            }
            .timeline-node:nth-child(odd),
            .timeline-node:nth-child(even) {
                flex-direction: row;
                padding-left: 56px;
                padding-right: 0;
            }
            .timeline-dot {
                left: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .section-gap {
                margin-top: var(--section-gap-mobile);
                margin-bottom: var(--section-gap-mobile);
            }
        }

        @media (max-width: 768px) {
            .page-hero {
                min-height: 28vh;
            }
            .page-hero-content h1 {
                font-size: 26px;
            }
            .page-hero-content .hero-subtitle {
                font-size: 14px;
            }
            .timeline-intro h2 {
                font-size: 24px;
            }
            .section-title h2 {
                font-size: 24px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 20px 14px;
            }
            .stat-card .stat-number {
                font-size: 28px;
            }
            .honor-grid {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section h3 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .footer-links-row {
                margin-left: 0;
            }
            .sticky-bottom-bar {
                padding: 10px 16px;
                flex-wrap: wrap;
                gap: 8px;
            }
            .sticky-bottom-bar .sticky-brand {
                font-size: 13px;
            }
            .sticky-bottom-bar .sticky-tagline {
                font-size: 11px;
            }
            .sticky-bottom-bar .btn-primary {
                font-size: 12px;
                padding: 8px 16px;
            }
            .timeline-card {
                padding: 16px;
            }
            .timeline-card h3 {
                font-size: 16px;
            }
            .timeline-node {
                margin-bottom: 32px;
            }
            .section-gap {
                margin-top: 36px;
                margin-bottom: 36px;
            }
        }

        @media (max-width: 520px) {
            .page-hero-content h1 {
                font-size: 22px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-card .stat-number {
                font-size: 24px;
            }
            .stat-card .stat-label {
                font-size: 11px;
            }
            .timeline-line {
                left: 18px;
            }
            .timeline-node:nth-child(odd),
            .timeline-node:nth-child(even) {
                padding-left: 40px;
            }
            .timeline-dot {
                left: 18px;
                width: 10px;
                height: 10px;
            }
            .sticky-bottom-bar {
                flex-direction: column;
                align-items: stretch;
                text-align: center;
            }
            .sticky-bottom-bar .sticky-brand {
                justify-content: center;
            }
        }

/* roulang page: category5 */
:root {
            --color-deep-charcoal: #1C1A17;
            --color-warm-copper: #B08D57;
            --color-copper-hover: #9A7848;
            --color-copper-active: #7C5E36;
            --color-warm-white: #F7F5F1;
            --color-text-dark: #2A2723;
            --color-text-muted: #6B645C;
            --color-text-inverse: #F7F5F1;
            --color-border-soft: #E5E0D9;
            --color-footer-link: #CFC9C1;
            --color-card-bg: #FFFFFF;
            --radius-card: 8px;
            --radius-img: 6px;
            --radius-btn: 4px;
            --shadow-card: 0 2px 8px rgba(28, 26, 23, 0.04);
            --shadow-card-hover: 0 8px 24px rgba(28, 26, 23, 0.08);
            --shadow-sticky: 0 -4px 16px rgba(28, 26, 23, 0.12);
            --shadow-elevated: 0 12px 32px rgba(28, 26, 23, 0.10);
            --transition-fast: 150ms ease-out;
            --transition-smooth: 180ms ease-out;
            --transition-sticky: 140ms ease-out;
            --max-width: 1200px;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 48px;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            box-sizing: border-box;
        }

        *,
        *::before,
        *::after {
            box-sizing: inherit;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--color-warm-white);
            color: var(--color-text-dark);
            line-height: 1.8;
            font-size: 15px;
            font-weight: 400;
            letter-spacing: 0.2px;
            margin: 0;
            padding: 0;
            padding-bottom: 80px;
            overflow-x: hidden;
        }

        a {
            color: var(--color-warm-copper);
            text-decoration: none;
            transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
        }

        a:hover {
            color: var(--color-copper-hover);
        }

        a:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            margin: 0;
            line-height: 1.25;
        }

        h1 {
            font-size: 42px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.15;
        }

        h2 {
            font-size: 32px;
            font-weight: 650;
            letter-spacing: -0.3px;
        }

        h3 {
            font-size: 24px;
            font-weight: 600;
        }

        p {
            margin: 0 0 16px;
        }

        .container-main {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header & Navigation */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border-soft);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-deep-charcoal);
            letter-spacing: -0.5px;
            text-decoration: none;
            white-space: nowrap;
            font-family: var(--font-heading);
        }

        .brand-logo:hover {
            color: var(--color-warm-copper);
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .brand-actions button {
            background: none;
            border: none;
            color: var(--color-text-dark);
            font-size: 18px;
            padding: 6px;
            border-radius: 50%;
            transition: color var(--transition-fast), background var(--transition-fast);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .brand-actions button:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.06);
        }

        .icon-nav-bar {
            background: #FFFFFF;
            border-top: 1px solid var(--color-border-soft);
            padding: 8px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            position: relative;
        }

        .icon-nav-bar::-webkit-scrollbar {
            display: none;
        }

        .icon-nav-inner {
            display: flex;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            flex-wrap: nowrap;
            justify-content: flex-start;
        }

        .icon-nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            padding: 10px 14px;
            border-radius: var(--radius-card);
            text-decoration: none;
            color: var(--color-text-dark);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            transition: color var(--transition-fast), background var(--transition-fast);
            min-width: 64px;
            flex-shrink: 0;
        }

        .icon-nav-item i {
            font-size: 20px;
            transition: color var(--transition-fast);
            color: var(--color-text-dark);
        }

        .icon-nav-item:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.04);
        }

        .icon-nav-item:hover i {
            color: var(--color-warm-copper);
        }

        .icon-nav-item.active {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.08);
        }

        .icon-nav-item.active i {
            color: var(--color-warm-copper);
        }

        /* Section spacing */
        .section {
            padding: var(--section-gap-desktop) 0;
        }

        .section-sm {
            padding: 48px 0;
        }

        .section-lg {
            padding: 100px 0;
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            border: none;
            text-decoration: none;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--color-copper-hover);
            box-shadow: 0 0 0 1px var(--color-copper-hover);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        .btn-primary:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
        }

        .btn-primary:active {
            background: var(--color-copper-active);
            transform: translateY(0);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--color-warm-copper);
            padding: 11px 23px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            border: 1px solid var(--color-warm-copper);
            text-decoration: none;
            transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: rgba(176, 141, 87, 0.08);
            color: var(--color-warm-copper);
            transform: translateY(-1px);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
        }

        .btn-text-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-warm-copper);
            font-weight: 600;
            font-size: 14px;
            text-decoration: none;
            transition: gap var(--transition-fast), color var(--transition-fast);
            cursor: pointer;
        }

        .btn-text-arrow i {
            transition: transform var(--transition-fast);
            font-size: 12px;
        }

        .btn-text-arrow:hover {
            color: var(--color-copper-hover);
            gap: 10px;
        }

        .btn-text-arrow:hover i {
            transform: translateX(3px);
        }

        /* Cards */
        .card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-soft);
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-smooth), transform var(--transition-smooth);
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .card-body {
            padding: 20px 24px;
        }

        /* Badge */
        .badge-copper {
            display: inline-block;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .badge-outline {
            display: inline-block;
            background: transparent;
            color: var(--color-warm-copper);
            padding: 3px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 500;
            border: 1px solid var(--color-warm-copper);
            white-space: nowrap;
        }

        /* Tag pill */
        .tag-pill {
            display: inline-block;
            background: rgba(176, 141, 87, 0.06);
            color: var(--color-text-dark);
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid var(--color-border-soft);
            transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }

        .tag-pill:hover {
            background: rgba(176, 141, 87, 0.12);
            border-color: var(--color-warm-copper);
            color: var(--color-warm-copper);
        }

        /* Hero banner - narrow */
        .hero-narrow {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            min-height: 260px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-narrow::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(28, 26, 23, 0.72) 0%, rgba(28, 26, 23, 0.55) 100%);
            z-index: 1;
        }

        .hero-narrow-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 40px 0;
        }

        .hero-narrow h1 {
            color: var(--color-text-inverse);
            font-size: 38px;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 8px;
        }

        .hero-narrow .hero-subtitle {
            color: rgba(247, 245, 241, 0.82);
            font-size: 16px;
            font-weight: 400;
            max-width: 600px;
        }

        /* Data stat cards */
        .stat-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-soft);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            text-align: center;
            transition: box-shadow var(--transition-smooth), transform var(--transition-smooth);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-elevated);
            transform: translateY(-3px);
        }

        .stat-card .stat-number {
            font-size: 48px;
            font-weight: 700;
            color: var(--color-warm-copper);
            letter-spacing: -1px;
            line-height: 1;
            margin-bottom: 8px;
            font-family: var(--font-heading);
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        .stat-card .stat-detail {
            font-size: 12px;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* Ranking list */
        .ranking-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border-soft);
            transition: background var(--transition-fast);
            cursor: default;
        }

        .ranking-item:last-child {
            border-bottom: none;
        }

        .ranking-item:hover {
            background: rgba(176, 141, 87, 0.03);
        }

        .ranking-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
            background: #F0EDE8;
            color: var(--color-text-muted);
        }

        .ranking-item.top-1 .ranking-num,
        .ranking-item.top-2 .ranking-num,
        .ranking-item.top-3 .ranking-num {
            background: var(--color-warm-copper);
            color: #FFFFFF;
        }

        .ranking-info {
            flex: 1;
            min-width: 0;
        }

        .ranking-title {
            font-weight: 600;
            font-size: 15px;
            color: var(--color-text-dark);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .ranking-meta {
            font-size: 12px;
            color: var(--color-text-muted);
            margin-top: 2px;
        }

        .ranking-extra {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-warm-copper);
            white-space: nowrap;
            flex-shrink: 0;
        }

        /* Image text block */
        .img-text-block {
            display: flex;
            gap: 40px;
            align-items: center;
        }

        .img-text-block.reverse {
            flex-direction: row-reverse;
        }

        .img-text-block .img-side {
            flex: 1;
            min-width: 0;
            border-radius: var(--radius-img);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .img-text-block .img-side img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-img);
        }

        .img-text-block .text-side {
            flex: 1;
            min-width: 0;
        }

        .img-text-block .text-side h3 {
            margin-bottom: 16px;
            color: var(--color-text-dark);
        }

        .img-text-block .text-side p {
            color: var(--color-text-muted);
            line-height: 1.8;
        }

        /* Grid cards */
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .card-grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        /* Two column layout */
        .two-col-layout {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: 40px;
            align-items: start;
        }

        /* FAQ */
        .faq-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .faq-item {
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border-soft);
        }

        .faq-item:first-child {
            padding-top: 0;
        }

        .faq-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .faq-question {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: 8px;
            cursor: default;
        }

        .faq-answer {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.8;
        }

        /* CTA section */
        .cta-section {
            background: var(--color-deep-charcoal);
            color: var(--color-text-inverse);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
        }

        .cta-section h2 {
            color: var(--color-text-inverse);
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(247, 245, 241, 0.78);
            max-width: 600px;
            margin: 0 auto 24px;
        }

        /* Sticky bottom bar */
        .sticky-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--color-deep-charcoal);
            color: var(--color-text-inverse);
            z-index: 999;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 24px;
            box-shadow: var(--shadow-sticky);
            transform: translateY(100%);
            opacity: 0;
            transition: transform var(--transition-sticky), opacity var(--transition-sticky);
            pointer-events: none;
        }

        .sticky-bottom-bar.visible {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }

        .sticky-bottom-bar .sticky-brand {
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .sticky-bottom-bar .sticky-tagline {
            font-size: 13px;
            color: rgba(247, 245, 241, 0.7);
            white-space: nowrap;
        }

        .sticky-bottom-bar .sticky-left {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        /* Footer */
        .site-footer {
            background: var(--color-deep-charcoal);
            color: var(--color-text-inverse);
            padding: 56px 0 32px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: var(--color-text-inverse);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .footer-col p {
            color: var(--color-footer-link);
            font-size: 13px;
            line-height: 1.7;
            margin: 0;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: var(--color-footer-link);
            font-size: 13px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--color-warm-copper);
        }

        .footer-bottom {
            border-top: 1px solid rgba(229, 224, 217, 0.15);
            padding-top: 20px;
            font-size: 12px;
            color: var(--color-footer-link);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: center;
            text-align: center;
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        .footer-links-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .footer-links-row a {
            color: var(--color-footer-link);
            font-size: 12px;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-links-row a:hover {
            color: var(--color-warm-copper);
        }

        /* Divider */
        .divider {
            border: none;
            border-top: 1px solid var(--color-border-soft);
            margin: 0;
        }

        /* Section with background */
        .section-bg-light {
            background: #F0EDE8;
        }

        .section-bg-dark {
            background: var(--color-deep-charcoal);
            color: var(--color-text-inverse);
        }

        .section-bg-dark h2,
        .section-bg-dark h3 {
            color: var(--color-text-inverse);
        }

        .section-bg-dark p {
            color: rgba(247, 245, 241, 0.8);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            h1 {
                font-size: 32px;
            }
            h2 {
                font-size: 26px;
            }
            h3 {
                font-size: 20px;
            }
            .hero-narrow {
                min-height: 200px;
            }
            .hero-narrow h1 {
                font-size: 28px;
            }
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .two-col-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .img-text-block {
                flex-direction: column;
                gap: 24px;
            }
            .img-text-block.reverse {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .stat-card .stat-number {
                font-size: 36px;
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .section-lg {
                padding: 60px 0;
            }
            .icon-nav-inner {
                padding-left: 12px;
                padding-right: 12px;
                gap: 2px;
            }
            .icon-nav-item {
                padding: 8px 10px;
                font-size: 12px;
                min-width: 52px;
            }
            .icon-nav-item i {
                font-size: 17px;
            }
            .brand-row {
                padding-left: 16px;
                padding-right: 16px;
            }
            .container-main {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 26px;
            }
            h2 {
                font-size: 22px;
            }
            h3 {
                font-size: 18px;
            }
            body {
                font-size: 14px;
            }
            .hero-narrow {
                min-height: 180px;
            }
            .hero-narrow h1 {
                font-size: 24px;
            }
            .hero-narrow .hero-subtitle {
                font-size: 14px;
            }
            .card-grid-3 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .card-grid-2 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stat-card .stat-number {
                font-size: 32px;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .two-col-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .sticky-bottom-bar {
                padding: 10px 16px;
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .sticky-bottom-bar .sticky-left {
                flex-direction: column;
                gap: 4px;
            }
            .ranking-item {
                gap: 10px;
                padding: 12px 0;
            }
            .ranking-num {
                width: 30px;
                height: 30px;
                font-size: 14px;
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .section-lg {
                padding: 48px 0;
            }
            .brand-logo {
                font-size: 18px;
            }
            .icon-nav-item {
                padding: 6px 8px;
                font-size: 11px;
                min-width: 44px;
            }
            .icon-nav-item i {
                font-size: 15px;
            }
            .btn-primary,
            .btn-secondary {
                font-size: 14px;
                padding: 10px 18px;
            }
            .brand-row {
                padding-left: 12px;
                padding-right: 12px;
            }
            .container-main {
                padding-left: 12px;
                padding-right: 12px;
            }
            body {
                padding-bottom: 100px;
            }
        }

        @media (max-width: 520px) {
            .hero-narrow h1 {
                font-size: 22px;
            }
            .stat-card .stat-number {
                font-size: 28px;
            }
            .ranking-title {
                font-size: 13px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 6px;
            }
            .sticky-bottom-bar .btn-primary {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category7 */
:root {
            --color-deep-charcoal: #1C1A17;
            --color-warm-copper: #B08D57;
            --color-copper-hover: #9A7848;
            --color-copper-active: #7C5E36;
            --color-warm-white: #F7F5F1;
            --color-text-dark: #2A2723;
            --color-text-muted: #6B645C;
            --color-text-inverse: #F7F5F1;
            --color-border-soft: #E5E0D9;
            --color-footer-link: #CFC9C1;
            --radius-card: 8px;
            --radius-img: 6px;
            --radius-btn: 4px;
            --shadow-card: 0 2px 8px rgba(28, 26, 23, 0.04);
            --shadow-card-hover: 0 8px 24px rgba(28, 26, 23, 0.08);
            --shadow-sticky: 0 -4px 16px rgba(28, 26, 23, 0.12);
            --transition-fast: 150ms ease-out;
            --transition-smooth: 180ms ease-out;
            --transition-sticky: 140ms ease-out;
            --max-width: 1200px;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 48px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--color-warm-white);
            color: var(--color-text-dark);
            line-height: 1.8;
            font-size: 15px;
            font-weight: 400;
            letter-spacing: 0.2px;
            margin: 0;
            padding: 0;
            padding-bottom: 72px;
            overflow-x: hidden;
        }

        a {
            color: var(--color-warm-copper);
            text-decoration: none;
            transition: color var(--transition-fast), border-color var(--transition-fast);
        }

        a:hover {
            color: var(--color-copper-hover);
        }

        a:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        .container-main {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header & Navigation */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--color-border-soft);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-deep-charcoal);
            letter-spacing: -0.5px;
            text-decoration: none;
            white-space: nowrap;
        }

        .brand-logo:hover {
            color: var(--color-warm-copper);
        }

        .brand-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .brand-actions button {
            background: none;
            border: none;
            color: var(--color-text-dark);
            font-size: 18px;
            padding: 6px;
            border-radius: 50%;
            transition: color var(--transition-fast), background var(--transition-fast);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .brand-actions button:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.06);
        }

        .icon-nav-bar {
            background: #FFFFFF;
            border-top: 1px solid var(--color-border-soft);
            padding: 8px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            position: relative;
        }

        .icon-nav-bar::-webkit-scrollbar {
            display: none;
        }

        .icon-nav-inner {
            display: flex;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            flex-wrap: nowrap;
            justify-content: flex-start;
        }

        .icon-nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            padding: 10px 14px;
            border-radius: var(--radius-card);
            text-decoration: none;
            color: var(--color-text-dark);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            transition: color var(--transition-fast), background var(--transition-fast);
            min-width: 64px;
            flex-shrink: 0;
        }

        .icon-nav-item i {
            font-size: 20px;
            transition: color var(--transition-fast);
            color: var(--color-text-dark);
        }

        .icon-nav-item:hover {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.04);
        }

        .icon-nav-item:hover i {
            color: var(--color-warm-copper);
        }

        .icon-nav-item.active {
            color: var(--color-warm-copper);
            background: rgba(176, 141, 87, 0.08);
        }

        .icon-nav-item.active i {
            color: var(--color-warm-copper);
        }

        /* Page Banner */
        .page-banner {
            background: linear-gradient(135deg, rgba(28, 26, 23, 0.72) 0%, rgba(28, 26, 23, 0.55) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 64px 0 56px;
            text-align: center;
            position: relative;
        }

        .page-banner h1 {
            color: var(--color-text-inverse);
            font-size: 42px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.15;
            margin: 0 0 12px;
        }

        .page-banner .banner-subtitle {
            color: rgba(247, 245, 241, 0.82);
            font-size: 17px;
            font-weight: 400;
            margin: 0;
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* Section */
        .section-gap {
            margin-top: var(--section-gap-desktop);
            margin-bottom: var(--section-gap-desktop);
        }

        .section-gap-sm {
            margin-top: 48px;
            margin-bottom: 48px;
        }

        /* FAQ */
        .faq-section {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-soft);
            box-shadow: var(--shadow-card);
            padding: 40px 36px;
        }

        .faq-item {
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border-soft);
        }

        .faq-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .faq-item:first-child {
            padding-top: 0;
        }

        .faq-question {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0 0 8px;
            line-height: 1.5;
        }

        .faq-answer {
            font-size: 15px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.8;
        }

        /* Card Grid */
        .card-grid-2x3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .info-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-soft);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition-smooth), transform var(--transition-smooth);
        }

        .info-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-1px);
        }

        .info-card-img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            border-radius: var(--radius-img) var(--radius-img) 0 0;
        }

        .info-card-body {
            padding: 18px 16px 20px;
        }

        .info-card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .info-card-body p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* Prose Block */
        .prose-block {
            max-width: 860px;
            margin: 0 auto;
        }

        .prose-block h2 {
            font-size: 30px;
            font-weight: 650;
            letter-spacing: -0.3px;
            color: var(--color-text-dark);
            margin: 0 0 20px;
            line-height: 1.25;
        }

        .prose-block p {
            font-size: 16px;
            color: var(--color-text-dark);
            line-height: 1.9;
            margin: 0 0 16px;
        }

        .prose-block p:last-child {
            margin-bottom: 0;
        }

        /* Stats Row */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: #FFFFFF;
            border: 1px solid var(--color-border-soft);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-smooth);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .stat-number {
            font-size: 40px;
            font-weight: 700;
            color: var(--color-warm-copper);
            letter-spacing: -0.5px;
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* CTA Section */
        .cta-section {
            background: var(--color-deep-charcoal);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            color: var(--color-text-inverse);
        }

        .cta-section h2 {
            font-size: 30px;
            font-weight: 650;
            letter-spacing: -0.3px;
            margin: 0 0 12px;
            color: var(--color-text-inverse);
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(247, 245, 241, 0.78);
            margin: 0 0 28px;
            line-height: 1.7;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-primary {
            display: inline-block;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            text-decoration: none;
            transition: background var(--transition-fast), box-shadow var(--transition-fast);
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--color-copper-hover);
            box-shadow: 0 0 0 1px var(--color-copper-hover);
            color: #FFFFFF;
        }

        .btn-primary:focus-visible {
            outline: 2px solid rgba(176, 141, 87, 0.3);
            outline-offset: 2px;
        }

        .btn-primary:active {
            background: var(--color-copper-active);
        }

        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--color-warm-copper);
            border: 1px solid var(--color-warm-copper);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            padding: 11px 26px;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: background var(--transition-fast), color var(--transition-fast);
            cursor: pointer;
        }

        .btn-outline:hover {
            background: rgba(176, 141, 87, 0.08);
            color: var(--color-copper-hover);
        }

        .btn-outline-inverse {
            display: inline-block;
            background: transparent;
            color: var(--color-text-inverse);
            border: 1px solid rgba(247, 245, 241, 0.5);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.8px;
            padding: 11px 26px;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: background var(--transition-fast), border-color var(--transition-fast);
            cursor: pointer;
        }

        .btn-outline-inverse:hover {
            background: rgba(247, 245, 241, 0.08);
            border-color: var(--color-text-inverse);
            color: var(--color-text-inverse);
        }

        /* Bottom Sticky Bar */
        .bottom-sticky-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--color-deep-charcoal);
            z-index: 999;
            padding: 14px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--shadow-sticky);
            opacity: 0;
            transform: translateY(100%);
            transition: opacity var(--transition-sticky), transform var(--transition-sticky);
            pointer-events: none;
        }

        .bottom-sticky-bar.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        .bottom-sticky-bar .sticky-brand {
            color: var(--color-text-inverse);
            font-size: 15px;
            font-weight: 600;
            white-space: nowrap;
        }

        .bottom-sticky-bar .sticky-tagline {
            color: rgba(247, 245, 241, 0.7);
            font-size: 13px;
            margin-left: 12px;
            white-space: nowrap;
        }

        .bottom-sticky-bar .sticky-left {
            display: flex;
            align-items: center;
            flex: 1;
            min-width: 0;
        }

        .bottom-sticky-bar .sticky-right {
            flex-shrink: 0;
            margin-left: 20px;
        }

        .bottom-sticky-bar .btn-sticky {
            display: inline-block;
            background: var(--color-warm-copper);
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.6px;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            border: none;
            text-decoration: none;
            transition: background var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }

        .bottom-sticky-bar .btn-sticky:hover {
            background: var(--color-copper-hover);
            color: #FFFFFF;
        }

        /* Footer */
        .site-footer {
            background: var(--color-deep-charcoal);
            color: var(--color-text-inverse);
            padding: 56px 0 28px;
            margin-top: var(--section-gap-desktop);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 36px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-inverse);
            margin: 0 0 16px;
            letter-spacing: 0.3px;
        }

        .footer-col p {
            font-size: 13px;
            color: var(--color-footer-link);
            line-height: 1.7;
            margin: 0;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-footer-link);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--color-warm-copper);
        }

        .footer-bottom {
            border-top: 1px solid rgba(229, 224, 217, 0.15);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 12px;
            color: var(--color-footer-link);
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        .footer-links-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-links-row a {
            font-size: 12px;
            color: var(--color-footer-link);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-links-row a:hover {
            color: var(--color-warm-copper);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .page-banner h1 {
                font-size: 32px;
            }
            .card-grid-2x3 {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stats-row {
                grid-template-columns: repeat(3, 1fr);
                gap: 14px;
            }
            .stat-number {
                font-size: 32px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .section-gap {
                margin-top: 56px;
                margin-bottom: 56px;
            }
            .faq-section {
                padding: 28px 24px;
            }
            .cta-section {
                padding: 36px 28px;
            }
        }

        @media (max-width: 768px) {
            .container-main {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-row {
                padding-left: 16px;
                padding-right: 16px;
            }
            .icon-nav-inner {
                padding-left: 12px;
                padding-right: 12px;
                gap: 2px;
            }
            .icon-nav-item {
                padding: 8px 10px;
                font-size: 12px;
                min-width: 52px;
            }
            .icon-nav-item i {
                font-size: 18px;
            }
            .page-banner {
                padding: 40px 16px 36px;
            }
            .page-banner h1 {
                font-size: 28px;
            }
            .page-banner .banner-subtitle {
                font-size: 15px;
                max-width: 100%;
            }
            .card-grid-2x3 {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .info-card-body {
                padding: 14px 12px 16px;
            }
            .info-card-body h3 {
                font-size: 15px;
            }
            .info-card-body p {
                font-size: 13px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 18px 12px;
            }
            .stat-number {
                font-size: 26px;
            }
            .stat-label {
                font-size: 12px;
            }
            .prose-block h2 {
                font-size: 24px;
            }
            .prose-block p {
                font-size: 15px;
            }
            .faq-section {
                padding: 20px 16px;
                border-radius: 6px;
            }
            .faq-question {
                font-size: 15px;
            }
            .faq-answer {
                font-size: 14px;
            }
            .cta-section {
                padding: 28px 20px;
                border-radius: 6px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .section-gap {
                margin-top: var(--section-gap-mobile);
                margin-bottom: var(--section-gap-mobile);
            }
            .section-gap-sm {
                margin-top: 32px;
                margin-bottom: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .bottom-sticky-bar {
                padding: 10px 16px;
                flex-wrap: wrap;
                gap: 8px;
            }
            .bottom-sticky-bar .sticky-left {
                flex: 1 1 auto;
            }
            .bottom-sticky-bar .sticky-tagline {
                display: none;
            }
            .bottom-sticky-bar .btn-sticky {
                padding: 8px 16px;
                font-size: 13px;
            }
            body {
                padding-bottom: 80px;
            }
        }

        @media (max-width: 520px) {
            .card-grid-2x3 {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stats-row {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .page-banner h1 {
                font-size: 24px;
            }
            .cta-section h2 {
                font-size: 21px;
            }
            .btn-primary,
            .btn-outline,
            .btn-outline-inverse {
                display: block;
                width: 100%;
                text-align: center;
                margin-bottom: 8px;
            }
        }