/* roulang page: index */
:root {
            --color-primary: #1c1c1e;
            --color-accent: #c9a96e;
            --color-accent-hover: #b8944f;
            --color-accent-light: #f5efe3;
            --color-bg: #f8f7f4;
            --color-white: #ffffff;
            --color-card: #ffffff;
            --color-text: #2c2c2c;
            --color-text-secondary: #6b6b6b;
            --color-text-muted: #999999;
            --color-border: #e8e5df;
            --color-border-light: #f0ede8;
            --color-nav-bg: #1c1c1e;
            --color-nav-text: #c5c5c5;
            --color-nav-hover: #ffffff;
            --color-nav-active-bg: rgba(201, 169, 110, 0.15);
            --color-tag-bg: #f5f0e8;
            --color-tag-text: #8b7355;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.45s ease;
            --nav-width: 248px;
            --font-stack: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-stack-display: 'PingFang SC', 'Hiragino Sans GB', 'Noto Serif SC', 'STSong', 'Songti SC', serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: row;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input {
            font-family: inherit;
            font-size: inherit;
        }
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 600;
            color: var(--color-primary);
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ========== 左侧导航 ========== */
        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--color-nav-bg);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            padding: 28px 20px 24px;
            overflow-y: auto;
            overflow-x: hidden;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
        }

        .side-nav__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 36px;
            padding: 0 6px;
            flex-shrink: 0;
        }
        .side-nav__logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #1c1c1e;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .side-nav__logo-text {
            font-size: 17px;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.5px;
            white-space: nowrap;
            font-family: var(--font-stack-display);
        }

        .side-nav__menu {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }
        .side-nav__link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--radius-md);
            color: var(--color-nav-text);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.3px;
        }
        .side-nav__link:hover {
            color: var(--color-nav-hover);
            background: rgba(255, 255, 255, 0.05);
        }
        .side-nav__link--active {
            color: var(--color-accent);
            background: var(--color-nav-active-bg);
            font-weight: 600;
        }
        .side-nav__link--active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 22px;
            background: var(--color-accent);
            border-radius: 0 3px 3px 0;
        }
        .side-nav__link-icon {
            width: 18px;
            text-align: center;
            font-size: 15px;
            flex-shrink: 0;
            opacity: 0.7;
        }
        .side-nav__link--active .side-nav__link-icon {
            opacity: 1;
        }

        .side-nav__cta {
            margin-top: 24px;
            flex-shrink: 0;
        }
        .side-nav__cta-btn {
            display: block;
            width: 100%;
            padding: 12px 18px;
            border-radius: var(--radius-md);
            background: var(--color-accent);
            color: #1c1c1e;
            font-weight: 600;
            font-size: 14px;
            text-align: center;
            letter-spacing: 0.4px;
            transition: all var(--transition-normal);
        }
        .side-nav__cta-btn:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(201, 169, 110, 0.35);
        }
        .side-nav__cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(201, 169, 110, 0.25);
        }

        .side-nav__footer-note {
            margin-top: 20px;
            font-size: 11px;
            color: rgba(255, 255, 255, 0.3);
            text-align: center;
            line-height: 1.5;
            flex-shrink: 0;
        }

        /* ========== 主内容区 ========== */
        .main-wrapper {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .main-content {
            flex: 1;
            padding: 0;
        }

        /* ========== 移动端顶部导航 ========== */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: var(--color-nav-bg);
            padding: 14px 18px;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .mobile-nav__logo {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .mobile-nav__logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 5px;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #1c1c1e;
            font-weight: 700;
            font-size: 15px;
        }
        .mobile-nav__logo-text {
            font-size: 15px;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.5px;
        }
        .mobile-nav__toggle {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 22px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .mobile-nav__toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .mobile-nav__drawer {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-nav-bg);
            z-index: 998;
            flex-direction: column;
            padding: 16px 18px 24px;
            overflow-y: auto;
        }
        .mobile-nav__drawer.open {
            display: flex;
        }
        .mobile-nav__drawer-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 13px 14px;
            border-radius: var(--radius-md);
            color: var(--color-nav-text);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition-fast);
        }
        .mobile-nav__drawer-link:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.05);
        }
        .mobile-nav__drawer-link--active {
            color: var(--color-accent);
            background: var(--color-nav-active-bg);
            font-weight: 600;
        }
        .mobile-nav__drawer-cta {
            margin-top: 16px;
            display: block;
            width: 100%;
            padding: 13px;
            border-radius: var(--radius-md);
            background: var(--color-accent);
            color: #1c1c1e;
            font-weight: 600;
            font-size: 14px;
            text-align: center;
        }

        /* ========== Section 通用 ========== */
        .section {
            padding: 64px 48px;
        }
        .section--dark {
            background: var(--color-primary);
            color: #e0e0e0;
        }
        .section--dark h2,
        .section--dark h3 {
            color: #ffffff;
        }
        .section--dark .section__subtitle {
            color: #b0b0b0;
        }
        .section--accent-bg {
            background: var(--color-accent-light);
        }
        .section--white {
            background: var(--color-white);
        }
        .section__header {
            margin-bottom: 40px;
        }
        .section__tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--color-accent);
            margin-bottom: 12px;
        }
        .section__title {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
            color: var(--color-primary);
        }
        .section--dark .section__title {
            color: #ffffff;
        }
        .section__subtitle {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 600px;
            line-height: 1.6;
        }
        .section--dark .section__subtitle {
            color: #b0b0b0;
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            padding: 64px 48px;
            background: var(--color-primary);
            overflow: hidden;
        }
        .hero__bg {
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 0;
        }
        .hero__overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(28, 28, 30, 0.85) 0%, rgba(28, 28, 30, 0.45) 50%, rgba(28, 28, 30, 0.7) 100%);
            z-index: 1;
        }
        .hero__content {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }
        .hero__tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 2.5px;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 16px;
            background: rgba(201, 169, 110, 0.12);
            padding: 6px 16px;
            border-radius: 20px;
            border: 1px solid rgba(201, 169, 110, 0.25);
        }
        .hero__title {
            font-size: 46px;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.8px;
            line-height: 1.2;
            margin-bottom: 16px;
            font-family: var(--font-stack-display);
        }
        .hero__title em {
            font-style: normal;
            color: var(--color-accent);
        }
        .hero__desc {
            font-size: 17px;
            color: #d5d5d5;
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 520px;
        }
        .hero__actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.3px;
            transition: all var(--transition-normal);
            white-space: nowrap;
        }
        .btn--primary {
            background: var(--color-accent);
            color: #1c1c1e;
        }
        .btn--primary:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201, 169, 110, 0.4);
        }
        .btn--primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 10px rgba(201, 169, 110, 0.3);
        }
        .btn--outline {
            background: transparent;
            color: #ffffff;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
        }
        .btn--outline:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-2px);
        }
        .btn--outline:active {
            transform: translateY(0);
        }

        /* ========== 品牌矩阵卡片 ========== */
        .brand-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .brand-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            cursor: pointer;
            border: 1px solid var(--color-border-light);
        }
        .brand-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-accent);
        }
        .brand-card__img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .brand-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .brand-card:hover .brand-card__img img {
            transform: scale(1.06);
        }
        .brand-card__body {
            padding: 18px 16px 20px;
        }
        .brand-card__tag {
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 1.5px;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 6px;
        }
        .brand-card__title {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
        }
        .brand-card__desc {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.5;
        }

        /* ========== 数据看板 ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 28px 20px;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .stat-card__value {
            font-size: 40px;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: -1px;
            line-height: 1;
            margin-bottom: 8px;
            font-family: var(--font-stack-display);
        }
        .stat-card__label {
            font-size: 14px;
            color: var(--color-text-secondary);
            font-weight: 500;
        }
        .stat-card__suffix {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-accent);
        }

        /* ========== 服务入口 ========== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .service-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent);
        }
        .service-card__icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-accent);
        }
        .service-card__title {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary);
        }
        .service-card__desc {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.6;
        }
        .service-card__link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            display: flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }
        .service-card__link:hover {
            gap: 8px;
            color: var(--color-accent-hover);
        }

        /* ========== 资讯列表 ========== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .news-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            cursor: pointer;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .news-card__img {
            height: 160px;
            overflow: hidden;
        }
        .news-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .news-card:hover .news-card__img img {
            transform: scale(1.05);
        }
        .news-card__body {
            padding: 18px 16px 20px;
        }
        .news-card__date {
            font-size: 11px;
            color: var(--color-text-muted);
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .news-card__title {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.4;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card__excerpt {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ========== 精品生活 ========== */
        .lifestyle-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .lifestyle-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 280px;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-normal);
        }
        .lifestyle-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-xl);
        }
        .lifestyle-card__img {
            position: absolute;
            inset: 0;
        }
        .lifestyle-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .lifestyle-card:hover .lifestyle-card__img img {
            transform: scale(1.06);
        }
        .lifestyle-card__overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(28, 28, 30, 0.8) 0%, rgba(28, 28, 30, 0.1) 60%);
            z-index: 1;
        }
        .lifestyle-card__content {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 2;
            padding: 24px;
            color: #ffffff;
        }
        .lifestyle-card__tag {
            font-size: 11px;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 6px;
            font-weight: 600;
        }
        .lifestyle-card__title {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 4px;
        }
        .lifestyle-card__desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.5;
        }

        /* ========== 热门排行 ========== */
        .ranking-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--color-white);
            padding: 16px 20px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .ranking-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent);
            transform: translateX(4px);
        }
        .ranking-item__num {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-accent);
            width: 40px;
            text-align: center;
            flex-shrink: 0;
            font-family: var(--font-stack-display);
        }
        .ranking-item__info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 3px;
        }
        .ranking-item__info p {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        /* ========== 移动端体验 ========== */
        .mobile-exp {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .mobile-exp__text h3 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 14px;
            color: #ffffff;
        }
        .mobile-exp__text p {
            font-size: 15px;
            color: #c5c5c5;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .mobile-exp__features {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 20px;
        }
        .mobile-exp__feature-tag {
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.08);
            color: #e0e0e0;
            font-size: 13px;
            font-weight: 500;
        }
        .mobile-exp__img {
            display: flex;
            justify-content: center;
            gap: 16px;
        }
        .mobile-exp__phone {
            width: 140px;
            height: 260px;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            border: 3px solid rgba(255, 255, 255, 0.2);
        }
        .mobile-exp__phone img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-accent);
        }
        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--color-accent);
        }
        .faq-item summary::after {
            content: '+';
            font-size: 20px;
            font-weight: 300;
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item[open] summary::after {
            content: '−';
            color: var(--color-accent);
        }
        .faq-item[open] summary {
            color: var(--color-accent);
        }
        .faq-item .faq-answer {
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            text-align: center;
            padding: 60px 48px;
            background: var(--color-accent-light);
            border-radius: var(--radius-xl);
            margin: 0 48px 64px;
        }
        .cta-section__title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .cta-section__desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--color-primary);
            color: #c5c5c5;
            padding: 40px 48px 28px;
            margin-top: auto;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 28px;
        }
        .footer__brand-name {
            font-size: 18px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 8px;
            font-family: var(--font-stack-display);
            letter-spacing: 0.5px;
        }
        .footer__brand-desc {
            font-size: 13px;
            color: #999999;
            line-height: 1.6;
            max-width: 300px;
        }
        .footer__col-title {
            font-size: 13px;
            font-weight: 600;
            color: #ffffff;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 14px;
        }
        .footer__col-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer__col-links a {
            font-size: 14px;
            color: #999999;
            transition: color var(--transition-fast);
        }
        .footer__col-links a:hover {
            color: var(--color-accent);
        }
        .footer__bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 18px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 12px;
            color: #777777;
        }
        .footer__disclaimer {
            font-size: 11px;
            color: #666666;
            line-height: 1.5;
            max-width: 600px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1200px) {
            .brand-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .section {
                padding: 48px 32px;
            }
            .hero {
                padding: 48px 32px;
                min-height: 420px;
            }
            .hero__title {
                font-size: 36px;
            }
            .cta-section {
                margin: 0 32px 48px;
            }
            .site-footer {
                padding: 36px 32px 24px;
            }
        }

        @media (max-width: 768px) {
            .side-nav {
                display: none;
            }
            .mobile-nav {
                display: flex;
            }
            .main-wrapper {
                margin-left: 0;
                padding-top: 60px;
            }
            .section {
                padding: 36px 18px;
            }
            .section__title {
                font-size: 26px;
            }
            .hero {
                padding: 40px 18px;
                min-height: 380px;
            }
            .hero__title {
                font-size: 28px;
            }
            .hero__desc {
                font-size: 15px;
            }
            .hero__actions {
                flex-direction: column;
                gap: 10px;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .brand-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .brand-card__img {
                height: 130px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card__value {
                font-size: 30px;
            }
            .service-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .news-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .lifestyle-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .lifestyle-card {
                height: 220px;
            }
            .ranking-list {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .mobile-exp {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .mobile-exp__phone {
                width: 110px;
                height: 200px;
                border-radius: 16px;
            }
            .cta-section {
                margin: 0 18px 36px;
                padding: 40px 20px;
            }
            .cta-section__title {
                font-size: 22px;
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 28px 18px 20px;
            }
            .footer__bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .brand-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .brand-card__img {
                height: 160px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 20px 12px;
            }
            .stat-card__value {
                font-size: 26px;
            }
            .hero__title {
                font-size: 24px;
            }
            .section__title {
                font-size: 22px;
            }
            .news-card__img {
                height: 140px;
            }
            .mobile-exp__phone {
                width: 90px;
                height: 170px;
                border-radius: 14px;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #1a1a1f;
            --color-accent: #c8a06e;
            --color-accent-deep: #a0783c;
            --color-bg: #fafaf7;
            --color-bg-alt: #f3f0ea;
            --color-surface: #ffffff;
            --color-text: #1a1a1f;
            --color-text-soft: #5c5c63;
            --color-text-muted: #8c8c91;
            --color-border: #e5e2db;
            --color-border-light: #efede7;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(26, 26, 31, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 26, 31, 0.08);
            --shadow-lg: 0 8px 32px rgba(26, 26, 31, 0.10);
            --shadow-xl: 0 16px 48px rgba(26, 26, 31, 0.12);
            --space-xs: 0.5rem;
            --space-sm: 0.75rem;
            --space-md: 1.25rem;
            --space-lg: 2rem;
            --space-xl: 3rem;
            --space-2xl: 4.5rem;
            --space-3xl: 6rem;
            --nav-width: 240px;
            --nav-collapsed: 72px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-display: 'Georgia', 'Noto Serif SC', 'STSong', 'Songti SC', 'Times New Roman', serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        h1,
        h2,
        h3,
        h4 {
            line-height: 1.25;
            font-weight: 600;
            letter-spacing: -0.01em;
        }

        h1 {
            font-size: clamp(2rem, 3.5vw, 2.8rem);
        }
        h2 {
            font-size: clamp(1.5rem, 2.4vw, 1.85rem);
        }
        h3 {
            font-size: clamp(1.1rem, 1.5vw, 1.25rem);
        }

        ul {
            list-style: none;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        .app-layout {
            display: flex;
            min-height: 100vh;
        }

        /* ===== 左侧竖向导航 ===== */
        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            flex-direction: column;
            padding: var(--space-lg) var(--space-md);
            z-index: 100;
            border-right: 1px solid rgba(255, 255, 255, 0.08);
            transition: transform var(--transition-smooth), width var(--transition-smooth);
        }

        .side-nav__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: var(--space-sm) var(--space-sm);
            margin-bottom: var(--space-xl);
            border-radius: var(--radius-md);
            transition: background var(--transition-fast);
            color: #fff;
            text-decoration: none;
        }

        .side-nav__logo:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }

        .side-nav__logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-display);
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
            letter-spacing: 0;
        }

        .side-nav__logo-text {
            font-family: var(--font-display);
            font-size: 1.15rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            white-space: nowrap;
            color: #fff;
        }

        .side-nav__menu {
            display: flex;
            flex-direction: column;
            gap: 2px;
            flex: 1;
        }

        .side-nav__link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--radius-md);
            font-size: 0.93rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.72);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            position: relative;
            text-decoration: none;
        }

        .side-nav__link:hover {
            background: rgba(255, 255, 255, 0.07);
            color: #fff;
        }

        .side-nav__link--active {
            background: rgba(200, 160, 110, 0.18);
            color: var(--color-accent);
            font-weight: 600;
        }

        .side-nav__link--active .side-nav__link-icon {
            color: var(--color-accent);
        }

        .side-nav__link-icon {
            font-size: 0.55rem;
            flex-shrink: 0;
            color: rgba(255, 255, 255, 0.4);
            transition: color var(--transition-fast);
        }

        .side-nav__link:hover .side-nav__link-icon {
            color: rgba(255, 255, 255, 0.8);
        }

        .side-nav__cta {
            margin-top: var(--space-lg);
            padding-top: var(--space-md);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .side-nav__cta-btn {
            display: block;
            text-align: center;
            padding: 11px 16px;
            border-radius: var(--radius-md);
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            text-decoration: none;
            white-space: nowrap;
        }

        .side-nav__cta-btn:hover {
            background: var(--color-accent-deep);
            color: #fff;
            box-shadow: 0 4px 18px rgba(200, 160, 110, 0.35);
            transform: translateY(-1px);
        }

        .side-nav__footer-note {
            margin-top: var(--space-md);
            font-size: 0.72rem;
            color: rgba(255, 255, 255, 0.35);
            text-align: center;
            letter-spacing: 0.03em;
        }

        /* ===== 右侧内容区 ===== */
        .main-content {
            margin-left: var(--nav-width);
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        /* ===== 移动端顶部导航 ===== */
        .mobile-top-bar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--color-primary);
            color: #fff;
            z-index: 101;
            align-items: center;
            padding: 0 var(--space-md);
            gap: 12px;
        }

        .mobile-menu-toggle {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: #fff;
            font-size: 1.2rem;
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .mobile-logo-text {
            font-family: var(--font-display);
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: #fff;
            flex: 1;
        }

        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 99;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .mobile-overlay.active {
            opacity: 1;
        }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 var(--space-lg);
        }

        .container--narrow {
            max-width: 860px;
        }

        /* ===== 页面Banner ===== */
        .page-banner {
            position: relative;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 35%;
            background-repeat: no-repeat;
            padding: var(--space-3xl) var(--space-lg) var(--space-2xl);
            color: #fff;
            min-height: 380px;
            display: flex;
            align-items: flex-end;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 26, 31, 0.35) 0%, rgba(26, 26, 31, 0.72) 60%, rgba(26, 26, 31, 0.88) 100%);
            z-index: 1;
        }

        .page-banner__content {
            position: relative;
            z-index: 2;
            max-width: 700px;
        }

        .page-banner__tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: rgba(200, 160, 110, 0.25);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(200, 160, 110, 0.4);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-accent);
            margin-bottom: var(--space-md);
        }

        .page-banner__title {
            font-family: var(--font-display);
            font-size: clamp(2.2rem, 4vw, 3rem);
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: var(--space-sm);
            line-height: 1.2;
        }

        .page-banner__desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.65;
            max-width: 540px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--space-2xl) var(--space-lg);
        }

        .section--alt {
            background: var(--color-bg-alt);
        }

        .section__header {
            text-align: center;
            margin-bottom: var(--space-xl);
        }

        .section__label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--color-accent-deep);
            text-transform: uppercase;
            margin-bottom: var(--space-xs);
        }

        .section__title {
            font-family: var(--font-display);
            font-size: clamp(1.5rem, 2.4vw, 1.85rem);
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--space-sm);
            letter-spacing: 0.02em;
        }

        .section__desc {
            color: var(--color-text-soft);
            max-width: 600px;
            margin: 0 auto;
            font-size: 0.95rem;
            line-height: 1.65;
        }

        /* ===== 工艺卡片网格 ===== */
        .craft-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: var(--space-lg);
        }

        .craft-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .craft-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }

        .craft-card__image-wrap {
            position: relative;
            aspect-ratio: 4/3;
            overflow: hidden;
            background: var(--color-bg-alt);
        }

        .craft-card__image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .craft-card:hover .craft-card__image-wrap img {
            transform: scale(1.04);
        }

        .craft-card__badge {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 5px 12px;
            border-radius: 20px;
            background: rgba(26, 26, 31, 0.75);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            z-index: 2;
        }

        .craft-card__body {
            padding: var(--space-md) var(--space-lg) var(--space-lg);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .craft-card__title {
            font-family: var(--font-display);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--space-xs);
            letter-spacing: 0.02em;
        }

        .craft-card__text {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.6;
            flex: 1;
            margin-bottom: var(--space-md);
        }

        .craft-card__meta {
            display: flex;
            align-items: center;
            gap: var(--space-md);
            font-size: 0.78rem;
            color: var(--color-text-muted);
            border-top: 1px solid var(--color-border-light);
            padding-top: var(--space-sm);
        }

        .craft-card__meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== 工艺数据看板 ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
        }

        .stat-block {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
        }

        .stat-block:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent);
            transform: translateY(-2px);
        }

        .stat-block__number {
            font-family: var(--font-display);
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--color-accent-deep);
            letter-spacing: 0.02em;
            line-height: 1;
            margin-bottom: var(--space-xs);
        }

        .stat-block__label {
            font-size: 0.85rem;
            color: var(--color-text-soft);
            font-weight: 500;
            letter-spacing: 0.03em;
        }

        /* ===== 工艺流程时间线 ===== */
        .timeline-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
            padding-left: 40px;
        }

        .timeline-list::before {
            content: '';
            position: absolute;
            left: 15px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: var(--color-border);
            border-radius: 1px;
        }

        .timeline-item {
            position: relative;
            padding: var(--space-md) 0 var(--space-md) var(--space-lg);
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -29px;
            top: 22px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-accent);
            box-shadow: 0 0 0 4px rgba(200, 160, 110, 0.18);
            z-index: 2;
        }

        .timeline-item__title {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-primary);
            margin-bottom: 4px;
            letter-spacing: 0.02em;
        }

        .timeline-item__desc {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.55;
        }

        /* ===== 资讯列表 ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }

        .news-item {
            display: flex;
            align-items: flex-start;
            gap: var(--space-lg);
            padding: var(--space-md) var(--space-lg);
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            text-decoration: none;
            color: inherit;
        }

        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent);
            transform: translateX(3px);
        }

        .news-item__thumb {
            width: 80px;
            height: 64px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }

        .news-item__thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-item__body {
            flex: 1;
            min-width: 0;
        }

        .news-item__title {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-primary);
            margin-bottom: 2px;
            letter-spacing: 0.01em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .news-item__excerpt {
            font-size: 0.82rem;
            color: var(--color-text-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-item__date {
            font-size: 0.72rem;
            color: var(--color-text-muted);
            flex-shrink: 0;
            padding-top: 2px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        .faq-item__trigger {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-md) var(--space-lg);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            gap: var(--space-md);
            transition: color var(--transition-fast);
        }

        .faq-item__trigger:hover {
            color: var(--color-accent-deep);
        }

        .faq-item__trigger-icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 0.7rem;
            transition: all var(--transition-smooth);
            color: var(--color-text-soft);
        }

        .faq-item.open .faq-item__trigger-icon {
            background: var(--color-accent);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-item__body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
        }

        .faq-item.open .faq-item__body {
            max-height: 300px;
        }

        .faq-item__body-inner {
            padding: 0 var(--space-lg) var(--space-lg);
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.65;
        }

        /* ===== CTA区域 ===== */
        .cta-section {
            background: var(--color-primary);
            color: #fff;
            text-align: center;
            padding: var(--space-2xl) var(--space-lg);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(200, 160, 110, 0.12);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(200, 160, 110, 0.08);
            pointer-events: none;
        }

        .cta-section__inner {
            position: relative;
            z-index: 2;
        }

        .cta-section__title {
            font-family: var(--font-display);
            font-size: clamp(1.6rem, 2.6vw, 2rem);
            font-weight: 700;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.03em;
        }

        .cta-section__text {
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: var(--space-lg);
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .btn {
            display: inline-block;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.93rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            text-decoration: none;
            cursor: pointer;
            border: none;
        }

        .btn--accent {
            background: var(--color-accent);
            color: #fff;
        }

        .btn--accent:hover {
            background: var(--color-accent-deep);
            color: #fff;
            box-shadow: 0 6px 22px rgba(200, 160, 110, 0.4);
            transform: translateY(-2px);
        }

        .btn--outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.35);
        }

        .btn--outline:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: var(--space-2xl) var(--space-lg) var(--space-lg);
            margin-top: auto;
        }

        .footer__grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--space-xl);
            max-width: 1100px;
            margin: 0 auto;
            padding-bottom: var(--space-xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer__brand-name {
            font-family: var(--font-display);
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.04em;
        }

        .footer__brand-desc {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.6;
            max-width: 320px;
        }

        .footer__col-title {
            font-weight: 700;
            color: #fff;
            font-size: 0.9rem;
            letter-spacing: 0.05em;
            margin-bottom: var(--space-md);
            text-transform: uppercase;
        }

        .footer__col-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer__col-links a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
        }

        .footer__col-links a:hover {
            color: var(--color-accent);
        }

        .footer__bottom {
            max-width: 1100px;
            margin: var(--space-lg) auto 0;
            text-align: center;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.38);
            letter-spacing: 0.02em;
        }

        .footer__disclaimer {
            margin-top: var(--space-sm);
            font-size: 0.72rem;
            color: rgba(255, 255, 255, 0.3);
            line-height: 1.55;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .side-nav {
                width: var(--nav-collapsed);
                padding: var(--space-md) var(--space-sm);
                align-items: center;
            }

            .side-nav__logo-text,
            .side-nav__link span:not(.side-nav__link-icon),
            .side-nav__cta-btn span,
            .side-nav__footer-note,
            .side-nav__cta-btn {
                display: none;
            }

            .side-nav__cta-btn {
                padding: 10px;
                border-radius: 50%;
                width: 40px;
                height: 40px;
                display: flex;
                align-items: center;
                justify-content: center;
                font-size: 1rem;
            }

            .side-nav__cta-btn::after {
                content: '→';
                display: block;
            }

            .side-nav__link {
                justify-content: center;
                padding: 12px;
                gap: 0;
                border-radius: var(--radius-sm);
            }

            .side-nav__link-icon {
                font-size: 0.7rem;
                margin: 0;
            }

            .side-nav__logo {
                justify-content: center;
                padding: 8px;
                gap: 0;
            }

            .side-nav__logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1.1rem;
            }

            .side-nav__cta {
                border-top: none;
                margin-top: var(--space-sm);
                padding-top: 0;
            }

            .main-content {
                margin-left: var(--nav-collapsed);
            }

            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }

            .craft-grid {
                grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .side-nav {
                transform: translateX(-100%);
                width: var(--nav-width);
                padding: var(--space-lg) var(--space-md);
                align-items: stretch;
                z-index: 102;
                transition: transform var(--transition-smooth);
            }

            .side-nav.open {
                transform: translateX(0);
            }

            .side-nav__logo-text,
            .side-nav__link span:not(.side-nav__link-icon),
            .side-nav__cta-btn span,
            .side-nav__footer-note {
                display: inline;
            }

            .side-nav__cta-btn {
                display: block;
                text-align: center;
                padding: 11px 16px;
                border-radius: var(--radius-md);
                width: auto;
                height: auto;
                font-size: 0.9rem;
            }

            .side-nav__cta-btn::after {
                content: none;
            }

            .side-nav__link {
                justify-content: flex-start;
                padding: 11px 14px;
                gap: 10px;
                border-radius: var(--radius-md);
            }

            .side-nav__logo {
                justify-content: flex-start;
                padding: var(--space-sm);
                gap: 10px;
            }

            .side-nav__cta {
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: var(--space-lg);
                padding-top: var(--space-md);
            }

            .mobile-top-bar {
                display: flex;
            }

            .mobile-overlay {
                display: block;
                pointer-events: none;
            }

            .mobile-overlay.active {
                pointer-events: auto;
            }

            .main-content {
                margin-left: 0;
                padding-top: 56px;
            }

            .page-banner {
                min-height: 280px;
                padding: var(--space-2xl) var(--space-md) var(--space-xl);
            }

            .section {
                padding: var(--space-xl) var(--space-md);
            }

            .craft-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }

            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-sm);
            }

            .stat-block__number {
                font-size: 1.8rem;
            }

            .news-item {
                flex-wrap: wrap;
                gap: var(--space-sm);
                padding: var(--space-md);
            }

            .news-item__thumb {
                width: 100%;
                height: 140px;
            }

            .news-item__date {
                padding-top: 0;
                font-size: 0.7rem;
            }

            .footer__grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }

            .timeline-list {
                padding-left: 30px;
            }

            .timeline-list::before {
                left: 10px;
            }

            .timeline-item::before {
                left: -24px;
                width: 8px;
                height: 8px;
            }

            .timeline-item {
                padding-left: var(--space-md);
            }

            .faq-item__trigger {
                font-size: 0.88rem;
                padding: var(--space-sm) var(--space-md);
            }
        }

        @media (max-width: 520px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-xs);
            }

            .stat-block {
                padding: var(--space-md);
            }

            .stat-block__number {
                font-size: 1.5rem;
            }

            .stat-block__label {
                font-size: 0.75rem;
            }

            .page-banner__title {
                font-size: 1.7rem;
            }

            .page-banner__desc {
                font-size: 0.9rem;
            }

            .btn {
                padding: 11px 22px;
                font-size: 0.85rem;
            }
        }

        @media (min-width: 769px) {
            .mobile-top-bar {
                display: none;
            }

            .mobile-overlay {
                display: none !important;
            }

            .side-nav {
                transform: translateX(0) !important;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #1a1a26;
            --color-accent: #b8945a;
            --color-accent-light: #d4b87a;
            --color-accent-dark: #8c6d3f;
            --color-bg: #f9f8f5;
            --color-bg-alt: #f0ede6;
            --color-bg-card: #ffffff;
            --color-text: #1c1c1c;
            --color-text-weak: #6b6b6b;
            --color-text-muted: #999999;
            --color-border: #e5e2db;
            --color-border-light: #f0ede8;
            --color-nav-bg: #14141f;
            --color-nav-text: #c4c4cc;
            --color-nav-active: #d4b87a;
            --color-nav-hover: #e8e8f0;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.05);
            --space-xs: 0.5rem;
            --space-sm: 0.75rem;
            --space-md: 1rem;
            --space-lg: 1.5rem;
            --space-xl: 2rem;
            --space-2xl: 3rem;
            --space-3xl: 4rem;
            --space-4xl: 5rem;
            --nav-width: 240px;
            --font-display: 'Georgia', 'Noto Serif SC', 'STSong', 'SimSun', serif;
            --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            display: flex;
            min-height: 100vh;
            flex-direction: row;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 600;
            color: var(--color-primary);
        }

        h1 {
            font-size: 2.25rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.75rem;
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: 1.3rem;
        }

        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--color-nav-bg);
            display: flex;
            flex-direction: column;
            padding: var(--space-xl) var(--space-lg);
            z-index: 100;
            overflow-y: auto;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            transition: transform var(--transition-smooth);
        }

        .side-nav__logo {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            margin-bottom: var(--space-2xl);
            text-decoration: none;
            color: #ffffff;
            transition: opacity var(--transition-fast);
        }
        .side-nav__logo:hover {
            opacity: 0.85;
        }
        .side-nav__logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: var(--color-accent);
            color: #fff;
            font-family: var(--font-display);
            font-size: 1.3rem;
            font-weight: 700;
            flex-shrink: 0;
            letter-spacing: 0;
        }
        .side-nav__logo-text {
            font-family: var(--font-display);
            font-size: 1.2rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .side-nav__menu {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }
        .side-nav__link {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            padding: 11px 14px;
            border-radius: var(--radius-md);
            color: var(--color-nav-text);
            font-size: 0.95rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            text-decoration: none;
            position: relative;
        }
        .side-nav__link:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-nav-hover);
        }
        .side-nav__link--active {
            background: rgba(180, 147, 90, 0.18);
            color: var(--color-nav-active);
            font-weight: 600;
        }
        .side-nav__link--active .side-nav__link-icon {
            color: var(--color-nav-active);
            opacity: 1;
        }
        .side-nav__link-icon {
            font-size: 0.55rem;
            opacity: 0.5;
            transition: all var(--transition-fast);
            flex-shrink: 0;
            margin-top: 1px;
        }
        .side-nav__link:hover .side-nav__link-icon {
            opacity: 0.8;
            color: var(--color-nav-hover);
        }

        .side-nav__cta {
            margin-top: var(--space-xl);
            padding-top: var(--space-lg);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .side-nav__cta-btn {
            display: block;
            width: 100%;
            text-align: center;
            padding: 12px 18px;
            border-radius: var(--radius-md);
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            text-decoration: none;
            border: 1px solid transparent;
        }
        .side-nav__cta-btn:hover {
            background: var(--color-accent-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(180, 147, 90, 0.35);
        }
        .side-nav__cta-btn:active {
            transform: translateY(0);
            background: var(--color-accent-dark);
        }

        .side-nav__footer-note {
            margin-top: var(--space-md);
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.3);
            text-align: center;
            letter-spacing: 0.03em;
        }

        .main-content {
            margin-left: var(--nav-width);
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .mobile-nav-toggle {
            display: none;
            position: fixed;
            top: 16px;
            right: 16px;
            z-index: 200;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-md);
            background: var(--color-primary);
            color: #fff;
            font-size: 1.3rem;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            transition: all var(--transition-fast);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .mobile-nav-toggle:hover {
            background: #2a2a3a;
        }
        .mobile-nav-toggle:active {
            transform: scale(0.94);
        }

        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 99;
            opacity: 0;
            transition: opacity var(--transition-smooth);
            pointer-events: none;
        }
        .mobile-nav-overlay.visible {
            opacity: 1;
            pointer-events: auto;
        }

        .page-banner {
            position: relative;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 40%;
            background-repeat: no-repeat;
            min-height: 340px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            isolation: isolate;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(20, 20, 31, 0.65) 0%, rgba(20, 20, 31, 0.78) 100%);
            z-index: 0;
        }
        .page-banner__inner {
            position: relative;
            z-index: 1;
            padding: var(--space-3xl) var(--space-xl);
            max-width: 720px;
        }
        .page-banner__breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: var(--space-xs);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: var(--space-lg);
            letter-spacing: 0.04em;
        }
        .page-banner__breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            transition: color var(--transition-fast);
        }
        .page-banner__breadcrumb a:hover {
            color: var(--color-accent-light);
        }
        .page-banner__breadcrumb-sep {
            color: rgba(255, 255, 255, 0.4);
        }
        .page-banner__title {
            font-family: var(--font-display);
            font-size: 2.8rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.03em;
            margin-bottom: var(--space-md);
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }
        .page-banner__subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.8;
            max-width: 560px;
            margin: 0 auto;
            letter-spacing: 0.02em;
        }

        .section {
            padding: var(--space-3xl) var(--space-2xl);
        }
        .section--alt {
            background: var(--color-bg-alt);
        }
        .section__header {
            text-align: center;
            margin-bottom: var(--space-2xl);
        }
        .section__label {
            display: inline-block;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            font-weight: 600;
            margin-bottom: var(--space-sm);
        }
        .section__title {
            font-family: var(--font-display);
            font-size: 2rem;
            color: var(--color-primary);
            margin-bottom: var(--space-sm);
            letter-spacing: 0.02em;
        }
        .section__desc {
            color: var(--color-text-weak);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.8;
        }

        .container {
            max-width: 1120px;
            margin: 0 auto;
        }

        .overview-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-2xl);
            align-items: center;
        }
        .overview-block__img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
            object-fit: cover;
            width: 100%;
        }
        .overview-block__text h3 {
            font-family: var(--font-display);
            font-size: 1.5rem;
            margin-bottom: var(--space-md);
            color: var(--color-primary);
        }
        .overview-block__text p {
            color: var(--color-text-weak);
            line-height: 1.9;
            margin-bottom: var(--space-md);
            font-size: 0.98rem;
        }
        .overview-block__tags {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-xs);
        }
        .tag {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            background: var(--color-bg-alt);
            color: var(--color-text-weak);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
        }
        .tag:hover {
            border-color: var(--color-accent);
            color: var(--color-accent-dark);
            background: rgba(180, 147, 90, 0.06);
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-xl);
        }
        .card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-border);
        }
        .card__img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 4/3;
            background: var(--color-bg-alt);
        }
        .card__img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .card:hover .card__img {
            transform: scale(1.04);
        }
        .card__badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            background: rgba(20, 20, 31, 0.8);
            color: #fff;
            backdrop-filter: blur(4px);
        }
        .card__body {
            padding: var(--space-lg);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card__title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: var(--space-xs);
            line-height: 1.4;
            letter-spacing: 0.01em;
        }
        .card__excerpt {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.7;
            flex: 1;
            margin-bottom: var(--space-md);
        }
        .card__meta {
            font-size: 0.78rem;
            color: var(--color-text-muted);
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            gap: var(--space-sm);
        }
        .card__link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--color-accent-dark);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            text-decoration: none;
        }
        .card__link:hover {
            color: var(--color-accent);
            gap: 8px;
        }
        .card__link-arrow {
            transition: transform var(--transition-fast);
        }
        .card__link:hover .card__link-arrow {
            transform: translateX(3px);
        }

        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-lg);
            text-align: center;
        }
        .stat-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: var(--space-xl) var(--space-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-border);
        }
        .stat-card__number {
            font-family: var(--font-display);
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: var(--space-sm);
        }
        .stat-card__unit {
            font-size: 1rem;
            color: var(--color-accent-dark);
            font-weight: 500;
        }
        .stat-card__label {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            letter-spacing: 0.03em;
        }

        .feature-block {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: var(--space-2xl);
            align-items: center;
            background: var(--color-bg-card);
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-md);
        }
        .feature-block__img {
            width: 100%;
            height: 100%;
            min-height: 360px;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .feature-block__body {
            padding: var(--space-2xl) var(--space-xl);
        }
        .feature-block__body h3 {
            font-family: var(--font-display);
            font-size: 1.5rem;
            margin-bottom: var(--space-md);
            color: var(--color-primary);
        }
        .feature-block__body p {
            color: var(--color-text-weak);
            line-height: 1.9;
            font-size: 0.98rem;
            margin-bottom: var(--space-lg);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
        }
        .btn--primary {
            background: var(--color-accent);
            color: #fff;
            border: 1px solid transparent;
        }
        .btn--primary:hover {
            background: var(--color-accent-light);
            box-shadow: 0 6px 20px rgba(180, 147, 90, 0.3);
            transform: translateY(-2px);
        }
        .btn--primary:active {
            transform: translateY(0);
            background: var(--color-accent-dark);
        }
        .btn--outline {
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-border);
        }
        .btn--outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent-dark);
            background: rgba(180, 147, 90, 0.04);
        }

        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space-md);
        }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-md);
        }
        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-md);
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--color-accent-dark);
        }
        .faq-item__icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            transition: all var(--transition-fast);
            color: var(--color-text-weak);
        }
        .faq-item[open] .faq-item__icon {
            background: var(--color-accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-item__answer {
            padding: 0 22px 18px;
            color: var(--color-text-weak);
            line-height: 1.9;
            font-size: 0.93rem;
            letter-spacing: 0.01em;
        }

        .cta-section {
            background: var(--color-primary);
            text-align: center;
            padding: var(--space-4xl) var(--space-2xl);
            position: relative;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(180, 147, 90, 0.12) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }
        .cta-section__inner {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-section__title {
            font-family: var(--font-display);
            font-size: 2rem;
            color: #fff;
            margin-bottom: var(--space-md);
            letter-spacing: 0.03em;
        }
        .cta-section__desc {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: var(--space-xl);
        }
        .cta-section .btn--primary {
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: var(--radius-md);
        }

        .site-footer {
            background: #111119;
            color: rgba(255, 255, 255, 0.65);
            padding: var(--space-3xl) var(--space-2xl) var(--space-xl);
            font-size: 0.9rem;
            line-height: 1.8;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr;
            gap: var(--space-2xl);
            max-width: 1120px;
            margin: 0 auto var(--space-2xl);
        }
        .footer__brand-name {
            font-family: var(--font-display);
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.04em;
        }
        .footer__brand-desc {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
            line-height: 1.7;
        }
        .footer__col-title {
            font-weight: 600;
            color: #fff;
            margin-bottom: var(--space-sm);
            font-size: 0.9rem;
            letter-spacing: 0.04em;
        }
        .footer__col-links {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .footer__col-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
            text-decoration: none;
            letter-spacing: 0.02em;
        }
        .footer__col-links a:hover {
            color: var(--color-accent-light);
        }
        .footer__bottom {
            max-width: 1120px;
            margin: 0 auto;
            padding-top: var(--space-lg);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer__disclaimer {
            margin-top: var(--space-sm);
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.28);
            line-height: 1.6;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 1024px) {
            :root {
                --nav-width: 220px;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-lg);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .overview-block {
                grid-template-columns: 1fr;
                gap: var(--space-xl);
            }
            .feature-block {
                grid-template-columns: 1fr;
            }
            .feature-block__img {
                aspect-ratio: 16/9;
                min-height: 260px;
            }
            .page-banner__title {
                font-size: 2.2rem;
            }
            .section {
                padding: var(--space-2xl) var(--space-lg);
            }
            .footer__grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            body {
                flex-direction: column;
            }
            .side-nav {
                position: fixed;
                top: 0;
                left: 0;
                width: 280px;
                height: 100vh;
                transform: translateX(-100%);
                box-shadow: var(--shadow-lg);
                z-index: 150;
                transition: transform var(--transition-smooth);
            }
            .side-nav.open {
                transform: translateX(0);
            }
            .mobile-nav-toggle {
                display: flex;
            }
            .mobile-nav-overlay {
                display: block;
            }
            .main-content {
                margin-left: 0;
                padding-top: 0;
            }
            .page-banner {
                min-height: 260px;
            }
            .page-banner__title {
                font-size: 1.7rem;
            }
            .page-banner__subtitle {
                font-size: 0.9rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
            .stat-card__number {
                font-size: 2rem;
            }
            .section {
                padding: var(--space-xl) var(--space-md);
            }
            .section__title {
                font-size: 1.5rem;
            }
            .feature-block__body {
                padding: var(--space-lg);
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .overview-block__img {
                aspect-ratio: 16/9;
            }
            .faq-item summary {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-item__answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
            .cta-section__title {
                font-size: 1.5rem;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
            .side-nav__cta-btn {
                padding: 10px 16px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 520px) {
            .page-banner {
                min-height: 220px;
            }
            .page-banner__title {
                font-size: 1.4rem;
            }
            .page-banner__inner {
                padding: var(--space-xl) var(--space-md);
            }
            .stats-row {
                grid-template-columns: 1fr;
            }
            .card__body {
                padding: var(--space-md);
            }
            .card__title {
                font-size: 1rem;
            }
            .section {
                padding: var(--space-lg) var(--space-sm);
            }
            .container {
                padding: 0 var(--space-sm);
            }
            .feature-block__body {
                padding: var(--space-md);
            }
            .page-banner__breadcrumb {
                font-size: 0.75rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a1a1a;
            --color-accent: #b8944e;
            --color-accent-hover: #9a7d3c;
            --color-accent-light: rgba(184, 148, 78, 0.08);
            --color-accent-glow: rgba(184, 148, 78, 0.2);
            --color-bg: #fafaf8;
            --color-surface: #ffffff;
            --color-surface-alt: #f5f3ef;
            --color-text: #2c2c2c;
            --color-text-strong: #1a1a1a;
            --color-text-light: #6b6b6b;
            --color-text-muted: #999999;
            --color-border: #e8e5df;
            --color-border-light: #f0ede8;
            --color-nav-bg: #1c1c1c;
            --color-nav-text: #b0b0b0;
            --color-nav-active: #b8944e;
            --color-nav-hover: #d4c8a8;
            --color-tag-bg: #f8f5f0;
            --color-tag-text: #8b7340;
            --color-overlay: rgba(0, 0, 0, 0.45);
            --color-overlay-light: rgba(0, 0, 0, 0.25);
            --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.12);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.13);
            --radius-xs: 4px;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 28px;
            --font-sans: 'Inter', 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-display: 'Playfair Display', 'Noto Serif SC', 'STSong', 'Georgia', 'Times New Roman', serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-spring: 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --nav-width: 260px;
            --nav-collapsed-width: 72px;
            --header-mobile-height: 60px;
            --content-max-width: 1280px;
            --section-gap-lg: 80px;
            --section-gap-md: 56px;
            --section-gap-sm: 40px;
            --inner-gap-lg: 48px;
            --inner-gap-md: 32px;
            --inner-gap-sm: 20px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            text-rendering: optimizeLegibility;
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: row;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        input {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.25;
            color: var(--color-text-strong);
        }

        :focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: var(--radius-xs);
        }

        /* ========== SIDE NAVIGATION (Desktop) ========== */
        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background-color: var(--color-nav-bg);
            display: flex;
            flex-direction: column;
            padding: 32px 20px 24px 20px;
            z-index: 100;
            overflow-y: auto;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .side-nav__logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 10px;
            margin-bottom: 36px;
            border-radius: var(--radius-md);
            transition: background-color var(--transition-fast);
            text-decoration: none;
            flex-shrink: 0;
        }

        .side-nav__logo:hover {
            background-color: rgba(255, 255, 255, 0.04);
        }

        .side-nav__logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-accent) 0%, #d4b87a 100%);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            flex-shrink: 0;
            font-family: var(--font-display);
        }

        .side-nav__logo-text {
            font-size: 1.1rem;
            font-weight: 600;
            color: #e8e4dc;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .side-nav__menu {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .side-nav__link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.93rem;
            color: var(--color-nav-text);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            font-weight: 450;
            position: relative;
            text-decoration: none;
        }

        .side-nav__link:hover {
            color: var(--color-nav-hover);
            background-color: rgba(255, 255, 255, 0.03);
        }

        .side-nav__link--active {
            color: var(--color-nav-active);
            background-color: rgba(184, 148, 78, 0.1);
            font-weight: 550;
        }

        .side-nav__link--active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 22px;
            background-color: var(--color-nav-active);
            border-radius: 0 3px 3px 0;
        }

        .side-nav__link-icon {
            font-size: 0.55rem;
            flex-shrink: 0;
            opacity: 0.7;
        }

        .side-nav__link--active .side-nav__link-icon {
            opacity: 1;
            color: var(--color-nav-active);
        }

        .side-nav__cta {
            margin-top: 24px;
            flex-shrink: 0;
        }

        .side-nav__cta-btn {
            display: block;
            width: 100%;
            text-align: center;
            padding: 11px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 550;
            letter-spacing: 0.03em;
            background: transparent;
            color: var(--color-accent);
            border: 1.5px solid var(--color-accent);
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
        }

        .side-nav__cta-btn:hover {
            background-color: var(--color-accent);
            color: #1a1a1a;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(184, 148, 78, 0.3);
        }

        .side-nav__footer-note {
            margin-top: 18px;
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.3);
            text-align: center;
            letter-spacing: 0.04em;
            flex-shrink: 0;
        }

        /* ========== MOBILE HEADER ========== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-mobile-height);
            background-color: var(--color-nav-bg);
            z-index: 99;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .mobile-header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }

        .mobile-header__logo-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-xs);
            background: linear-gradient(135deg, var(--color-accent) 0%, #d4b87a 100%);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-display);
        }

        .mobile-header__logo-text {
            font-size: 1rem;
            font-weight: 600;
            color: #e8e4dc;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .mobile-header__toggle {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
            z-index: 101;
        }

        .mobile-header__toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: #d0ccc4;
            border-radius: 2px;
            transition: all var(--transition-smooth);
            transform-origin: center;
        }

        .mobile-header__toggle.is-open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-header__toggle.is-open span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .mobile-header__toggle.is-open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background-color: rgba(0, 0, 0, 0.6);
            z-index: 98;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .mobile-nav-overlay.is-visible {
            display: block;
            opacity: 1;
        }

        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: var(--header-mobile-height);
            left: 0;
            right: 0;
            bottom: 0;
            background-color: var(--color-nav-bg);
            z-index: 98;
            flex-direction: column;
            padding: 20px 16px 32px;
            overflow-y: auto;
            transform: translateX(-100%);
            transition: transform var(--transition-spring);
        }

        .mobile-nav-panel.is-open {
            display: flex;
            transform: translateX(0);
        }

        .mobile-nav-panel__link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 13px 16px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            color: var(--color-nav-text);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            text-decoration: none;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .mobile-nav-panel__link:hover {
            color: var(--color-nav-hover);
            background-color: rgba(255, 255, 255, 0.03);
        }

        .mobile-nav-panel__link--active {
            color: var(--color-nav-active);
            background-color: rgba(184, 148, 78, 0.1);
            font-weight: 550;
        }

        .mobile-nav-panel__cta {
            margin-top: 20px;
            display: block;
            width: 100%;
            text-align: center;
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 550;
            letter-spacing: 0.03em;
            background: transparent;
            color: var(--color-accent);
            border: 1.5px solid var(--color-accent);
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .mobile-nav-panel__cta:hover {
            background-color: var(--color-accent);
            color: #1a1a1a;
        }

        /* ========== MAIN CONTENT AREA ========== */
        .main-wrapper {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            transition: margin-left var(--transition-smooth);
        }

        .main-content {
            flex: 1;
            padding: 0;
        }

        /* ========== CONTAINER ========== */
        .container {
            width: 100%;
            max-width: var(--content-max-width);
            margin: 0 auto;
            padding: 0 40px;
        }

        .container--narrow {
            max-width: 900px;
        }

        .container--wide {
            max-width: 1400px;
        }

        /* ========== SECTION SPACING ========== */
        .section {
            padding: var(--section-gap-lg) 0;
        }

        .section--alt {
            background-color: var(--color-surface-alt);
        }

        .section--dark {
            background-color: var(--color-primary);
            color: #e0dcd4;
        }

        .section--dark h2,
        .section--dark h3 {
            color: #f5f2eb;
        }

        .section--dark .section__subtitle {
            color: #b0a99c;
        }

        .section__header {
            text-align: center;
            margin-bottom: var(--inner-gap-lg);
        }

        .section__label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 10px;
        }

        .section__title {
            font-size: 2.4rem;
            font-weight: 700;
            letter-spacing: 0.01em;
            margin-bottom: 12px;
            color: var(--color-text-strong);
        }

        .section__title--serif {
            font-family: var(--font-display);
            font-weight: 600;
        }

        .section__subtitle {
            font-size: 1.05rem;
            color: var(--color-text-light);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    var(--color-overlay-light) 0%,
                    var(--color-overlay) 60%,
                    rgba(0, 0, 0, 0.7) 100%);
            z-index: 1;
        }

        .page-banner__content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            padding: 40px 20px;
            max-width: 700px;
        }

        .page-banner__breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .page-banner__breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition-fast);
        }

        .page-banner__breadcrumb a:hover {
            color: #fff;
        }

        .page-banner__breadcrumb-sep {
            opacity: 0.5;
        }

        .page-banner__title {
            font-size: 3rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
            font-family: var(--font-display);
            line-height: 1.2;
        }

        .page-banner__desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.6;
            max-width: 520px;
            margin: 0 auto;
        }

        /* ========== BRAND INTRO SECTION ========== */
        .brand-intro {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .brand-intro__text h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }

        .brand-intro__text p {
            font-size: 1.02rem;
            color: var(--color-text-light);
            line-height: 1.75;
            margin-bottom: 14px;
        }

        .brand-intro__visual {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .brand-intro__visual img {
            width: 100%;
            height: auto;
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        .brand-intro__visual-badge {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text-strong);
            letter-spacing: 0.03em;
            box-shadow: var(--shadow-sm);
        }

        /* ========== BRAND CARD GRID ========== */
        .brand-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .brand-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            cursor: pointer;
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
        }

        .brand-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: transparent;
        }

        .brand-card__image-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 3/2;
        }

        .brand-card__image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-spring);
        }

        .brand-card:hover .brand-card__image-wrap img {
            transform: scale(1.06);
        }

        .brand-card__tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(6px);
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--color-accent);
            z-index: 2;
        }

        .brand-card__body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .brand-card__name {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text-strong);
            letter-spacing: 0.02em;
            font-family: var(--font-display);
        }

        .brand-card__origin {
            font-size: 0.78rem;
            color: var(--color-text-muted);
            letter-spacing: 0.04em;
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        .brand-card__desc {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.55;
            flex: 1;
        }

        .brand-card__link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-size: 0.88rem;
            font-weight: 550;
            color: var(--color-accent);
            transition: gap var(--transition-fast);
            letter-spacing: 0.02em;
            text-decoration: none;
        }

        .brand-card__link:hover {
            gap: 10px;
            color: var(--color-accent-hover);
        }

        .brand-card__link-arrow {
            font-size: 0.75rem;
            transition: transform var(--transition-fast);
        }

        .brand-card__link:hover .brand-card__link-arrow {
            transform: translateX(3px);
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .stat-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
        }

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

        .stat-card__number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--color-accent);
            font-family: var(--font-display);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-card__suffix {
            font-size: 1.4rem;
            font-weight: 500;
            color: var(--color-accent);
        }

        .stat-card__label {
            font-size: 0.9rem;
            color: var(--color-text-light);
            letter-spacing: 0.03em;
            font-weight: 500;
        }

        .stat-card__note {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            margin-top: 6px;
        }

        /* ========== FEATURED STORY ========== */
        .featured-story {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
            align-items: center;
            background: var(--color-surface);
            border-radius: var(--radius-2xl);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .featured-story__image {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
        }

        .featured-story__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .featured-story__body {
            padding: 32px 36px 32px 12px;
        }

        .featured-story__label {
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.07em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 8px;
        }

        .featured-story__title {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text-strong);
            letter-spacing: 0.01em;
            font-family: var(--font-display);
        }

        .featured-story__excerpt {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .featured-story__link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--color-accent);
            font-size: 0.92rem;
            letter-spacing: 0.02em;
            text-decoration: none;
            transition: gap var(--transition-fast);
        }

        .featured-story__link:hover {
            gap: 12px;
            color: var(--color-accent-hover);
        }

        /* ========== NEWS LIST ========== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-item {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-xs);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .news-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: transparent;
        }

        .news-item__image {
            aspect-ratio: 16/10;
            overflow: hidden;
        }

        .news-item__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-spring);
        }

        .news-item:hover .news-item__image img {
            transform: scale(1.05);
        }

        .news-item__body {
            padding: 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-item__date {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            letter-spacing: 0.04em;
            margin-bottom: 8px;
        }

        .news-item__title {
            font-size: 1rem;
            font-weight: 650;
            color: var(--color-text-strong);
            line-height: 1.45;
            margin-bottom: 8px;
            flex: 1;
        }

        .news-item__tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--color-tag-text);
            background: var(--color-tag-bg);
            padding: 4px 10px;
            border-radius: 20px;
            align-self: flex-start;
            margin-top: 6px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            text-align: center;
            padding: var(--section-gap-lg) 0;
        }

        .cta-section__inner {
            background: linear-gradient(160deg, #1c1c1c 0%, #2a2520 50%, #1f1c18 100%);
            border-radius: var(--radius-2xl);
            padding: 60px 40px;
            color: #f5f2eb;
            position: relative;
            overflow: hidden;
        }

        .cta-section__inner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(184, 148, 78, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section__title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
            font-family: var(--font-display);
            position: relative;
            z-index: 1;
        }

        .cta-section__desc {
            font-size: 1rem;
            color: #c5bfb4;
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }

        .cta-section__btn {
            display: inline-block;
            padding: 14px 36px;
            background: var(--color-accent);
            color: #1a1a1a;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.04em;
            border-radius: var(--radius-sm);
            transition: all var(--transition-smooth);
            text-decoration: none;
            position: relative;
            z-index: 1;
        }

        .cta-section__btn:hover {
            background: #c9a55a;
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(184, 148, 78, 0.35);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background-color: var(--color-primary);
            color: #c5bfb4;
            padding: 48px 0 28px;
            margin-top: auto;
        }

        .footer__grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 24px;
        }

        .footer__brand-name {
            font-size: 1.3rem;
            font-weight: 700;
            color: #e8e4dc;
            letter-spacing: 0.05em;
            margin-bottom: 10px;
            font-family: var(--font-display);
        }

        .footer__brand-desc {
            font-size: 0.88rem;
            line-height: 1.6;
            color: #a09a90;
            max-width: 340px;
        }

        .footer__col-title {
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.07em;
            text-transform: uppercase;
            color: #9a9488;
            margin-bottom: 14px;
        }

        .footer__col-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer__col-links a {
            font-size: 0.9rem;
            color: #b5afa5;
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer__col-links a:hover {
            color: #e8e4dc;
        }

        .footer__bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: #7a746c;
            letter-spacing: 0.02em;
        }

        .footer__disclaimer {
            font-size: 0.75rem;
            color: #6b6560;
            text-align: right;
            max-width: 420px;
            line-height: 1.5;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1200px) {
            .brand-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
            .news-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .featured-story {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .brand-intro {
                gap: 36px;
            }
            .section__title {
                font-size: 2rem;
            }
            .page-banner__title {
                font-size: 2.4rem;
            }
            .container {
                padding: 0 28px;
            }
        }

        @media (max-width: 1024px) {
            .side-nav {
                display: none;
            }
            .mobile-header {
                display: flex;
            }
            .main-wrapper {
                margin-left: 0;
                padding-top: var(--header-mobile-height);
            }
            .brand-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .news-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .brand-intro {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .brand-intro__visual {
                order: -1;
            }
            .featured-story {
                grid-template-columns: 1fr;
            }
            .featured-story__body {
                padding: 24px 28px 28px;
            }
            .page-banner {
                min-height: 320px;
            }
            .page-banner__title {
                font-size: 2rem;
            }
            .page-banner__desc {
                font-size: 0.95rem;
            }
            .section {
                padding: var(--section-gap-md) 0;
            }
            .section__title {
                font-size: 1.7rem;
            }
            .cta-section__inner {
                padding: 44px 28px;
            }
            .cta-section__title {
                font-size: 1.6rem;
            }
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer__grid>div:first-child {
                grid-column: 1 / -1;
            }
            .container {
                padding: 0 20px;
            }
        }

        @media (max-width: 640px) {
            .brand-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .news-list {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 24px 16px;
            }
            .stat-card__number {
                font-size: 2.2rem;
            }
            .brand-card__body {
                padding: 14px;
            }
            .brand-card__name {
                font-size: 1rem;
            }
            .brand-card__desc {
                font-size: 0.8rem;
            }
            .page-banner {
                min-height: 260px;
            }
            .page-banner__title {
                font-size: 1.6rem;
            }
            .page-banner__desc {
                font-size: 0.85rem;
            }
            .section {
                padding: var(--section-gap-sm) 0;
            }
            .section__title {
                font-size: 1.4rem;
            }
            .section__subtitle {
                font-size: 0.9rem;
            }
            .section__header {
                margin-bottom: var(--inner-gap-md);
            }
            .cta-section__inner {
                padding: 36px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section__title {
                font-size: 1.35rem;
            }
            .cta-section__btn {
                padding: 12px 28px;
                font-size: 0.88rem;
            }
            .featured-story {
                border-radius: var(--radius-lg);
            }
            .featured-story__body {
                padding: 18px 16px 22px;
            }
            .featured-story__title {
                font-size: 1.25rem;
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer__bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .footer__disclaimer {
                text-align: center;
                max-width: 100%;
            }
            .brand-intro__text h2 {
                font-size: 1.5rem;
            }
            .container {
                padding: 0 16px;
            }
            .brand-card__tag {
                font-size: 0.65rem;
                padding: 4px 8px;
                top: 8px;
                left: 8px;
            }
        }

        @media (max-width: 400px) {
            .brand-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 18px 12px;
            }
            .stat-card__number {
                font-size: 1.8rem;
            }
            .stat-card__label {
                font-size: 0.78rem;
            }
            .page-banner__title {
                font-size: 1.35rem;
            }
            .section__title {
                font-size: 1.25rem;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #1a1815;
            --color-accent: #b8935a;
            --color-accent-light: #d4b87a;
            --color-accent-deep: #8b6914;
            --color-bg: #faf8f4;
            --color-bg-alt: #f3efe8;
            --color-bg-card: #ffffff;
            --color-bg-dark: #1a1815;
            --color-text: #1a1815;
            --color-text-soft: #5c554b;
            --color-text-light: #8a8278;
            --color-text-on-dark: #e8e4dc;
            --color-border: #e5dfd6;
            --color-border-light: #f0ebe2;
            --color-shadow: rgba(26, 24, 21, 0.07);
            --color-shadow-md: rgba(26, 24, 21, 0.12);
            --color-shadow-lg: rgba(26, 24, 21, 0.18);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px var(--color-shadow);
            --shadow-md: 0 6px 20px var(--color-shadow-md);
            --shadow-lg: 0 12px 36px var(--color-shadow-lg);
            --shadow-card: 0 4px 16px var(--color-shadow);
            --space-xs: 8px;
            --space-sm: 14px;
            --space-md: 22px;
            --space-lg: 36px;
            --space-xl: 52px;
            --space-2xl: 72px;
            --nav-width: 260px;
            --nav-width-tablet: 220px;
            --mobile-nav-height: 56px;
            --font-serif: 'Georgia', 'Times New Roman', 'Songti SC', 'STSong', serif;
            --font-sans: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-spring: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 600;
            color: var(--color-primary);
        }

        h1 {
            font-size: 2.6rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.95rem;
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
        }

        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
            display: flex;
            flex-direction: column;
            padding: 28px 20px 20px;
            z-index: 1000;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            transition: transform var(--transition-smooth), width var(--transition-smooth);
            overflow-y: auto;
            overflow-x: hidden;
        }

        .side-nav__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 32px;
            color: var(--color-text-on-dark);
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: 0.04em;
            transition: opacity var(--transition-fast);
            flex-shrink: 0;
        }
        .side-nav__logo:hover {
            opacity: 0.85;
        }
        .side-nav__logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: var(--color-accent);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            letter-spacing: 0;
            flex-shrink: 0;
            transition: background var(--transition-fast), transform var(--transition-fast);
        }
        .side-nav__logo:hover .side-nav__logo-icon {
            background: var(--color-accent-light);
            transform: scale(1.04);
        }
        .side-nav__logo-text {
            white-space: nowrap;
        }

        .side-nav__menu {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
            overflow-y: auto;
        }
        .side-nav__link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            color: rgba(232, 228, 220, 0.75);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
            position: relative;
        }
        .side-nav__link:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
            transform: translateX(3px);
        }
        .side-nav__link--active {
            background: rgba(184, 147, 90, 0.2);
            color: #fff;
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--color-accent);
            border-radius: var(--radius-md);
        }
        .side-nav__link--active .side-nav__link-icon {
            color: var(--color-accent-light);
        }
        .side-nav__link-icon {
            font-size: 0.65rem;
            color: rgba(232, 228, 220, 0.45);
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .side-nav__link:hover .side-nav__link-icon {
            color: var(--color-accent-light);
        }
        .side-nav__link--active .side-nav__link-icon {
            color: var(--color-accent-light);
        }

        .side-nav__cta {
            margin-top: 20px;
            flex-shrink: 0;
        }
        .side-nav__cta-btn {
            display: block;
            text-align: center;
            padding: 12px 20px;
            border-radius: var(--radius-md);
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .side-nav__cta-btn:hover {
            background: var(--color-accent-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(184, 147, 90, 0.35);
        }
        .side-nav__cta-btn:active {
            transform: translateY(0);
            background: var(--color-accent-deep);
        }

        .side-nav__footer-note {
            margin-top: 16px;
            font-size: 0.75rem;
            color: rgba(232, 228, 220, 0.4);
            text-align: center;
            flex-shrink: 0;
            letter-spacing: 0.05em;
        }

        .main-content {
            margin-left: var(--nav-width);
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            transition: margin-left var(--transition-smooth);
        }

        .container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 var(--space-lg);
            width: 100%;
        }
        .container--narrow {
            max-width: 860px;
        }
        .container--wide {
            max-width: 1200px;
        }

        .section {
            padding: var(--space-2xl) 0;
        }
        .section--dark {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }
        .section--dark h2,
        .section--dark h3 {
            color: #fff;
        }
        .section--alt {
            background: var(--color-bg-alt);
        }
        .section--tight {
            padding: var(--space-xl) 0;
        }
        .section-header {
            margin-bottom: var(--space-xl);
            text-align: center;
        }
        .section-header--left {
            text-align: left;
        }
        .section-header__label {
            display: inline-block;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.12em;
            color: var(--color-accent);
            font-weight: 600;
            margin-bottom: var(--space-xs);
        }
        .section-header h2 {
            margin-bottom: var(--space-sm);
        }
        .section-header__desc {
            color: var(--color-text-soft);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-header--left .section-header__desc {
            margin: 0;
        }

        .banner {
            position: relative;
            padding: var(--space-2xl) 0;
            min-height: 380px;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 24, 21, 0.82) 0%, rgba(26, 24, 21, 0.45) 50%, rgba(26, 24, 21, 0.7) 100%);
            z-index: 1;
        }
        .banner__content {
            position: relative;
            z-index: 2;
            color: #fff;
            max-width: 650px;
        }
        .banner__content h1 {
            color: #fff;
            font-size: 2.8rem;
            margin-bottom: var(--space-sm);
            letter-spacing: -0.02em;
        }
        .banner__content p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: var(--space-md);
        }
        .banner__badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            font-size: 0.85rem;
            letter-spacing: 0.06em;
            color: #fff;
            margin-bottom: var(--space-md);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
        }
        .card-grid--3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .card-grid--2 {
            grid-template-columns: repeat(2, 1fr);
        }

        .card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--color-border-light);
        }
        .card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border);
        }
        .card__image-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 4 / 3;
            background: var(--color-bg-alt);
        }
        .card__image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-spring);
        }
        .card:hover .card__image-wrap img {
            transform: scale(1.06);
        }
        .card__image-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            border-radius: 20px;
            background: rgba(26, 24, 21, 0.75);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            z-index: 2;
        }
        .card__body {
            padding: var(--space-md);
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: var(--space-xs);
        }
        .card__body h3 {
            font-size: 1.1rem;
            margin: 0;
        }
        .card__body p {
            color: var(--color-text-soft);
            font-size: 0.9rem;
            line-height: 1.55;
            flex: 1;
        }
        .card__meta {
            font-size: 0.8rem;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: auto;
        }
        .card__tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 14px;
            background: var(--color-bg-alt);
            font-size: 0.75rem;
            color: var(--color-accent-deep);
            font-weight: 500;
            letter-spacing: 0.04em;
        }

        .list-block {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }
        .list-block__item {
            display: flex;
            align-items: flex-start;
            gap: var(--space-md);
            padding: var(--space-md);
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .list-block__item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .list-block__item-num {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-bg-dark);
            color: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.02em;
        }
        .list-block__item-content h4 {
            margin: 0 0 4px;
            font-size: 1rem;
        }
        .list-block__item-content p {
            margin: 0;
            color: var(--color-text-soft);
            font-size: 0.9rem;
            line-height: 1.5;
        }

        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
        }
        .stat-card {
            text-align: center;
            padding: var(--space-lg) var(--space-md);
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .stat-card__number {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--color-accent);
            font-family: var(--font-serif);
            letter-spacing: -0.02em;
            line-height: 1.1;
        }
        .stat-card__label {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            margin-top: 6px;
            letter-spacing: 0.03em;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tag-cloud__tag {
            padding: 8px 18px;
            border-radius: 24px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            font-size: 0.9rem;
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition-fast);
            letter-spacing: 0.03em;
            white-space: nowrap;
        }
        .tag-cloud__tag:hover {
            background: var(--color-bg-dark);
            color: #fff;
            border-color: var(--color-bg-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .tag-cloud__tag--active {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
            font-weight: 600;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-item__trigger {
            width: 100%;
            padding: var(--space-md) var(--space-lg);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-md);
            text-align: left;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-primary);
            background: transparent;
            cursor: pointer;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
            line-height: 1.5;
        }
        .faq-item__trigger:hover {
            color: var(--color-accent);
        }
        .faq-item__trigger:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: -2px;
            border-radius: var(--radius-md);
        }
        .faq-item__icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            transition: all var(--transition-smooth);
            color: var(--color-accent);
            font-weight: 700;
        }
        .faq-item--open .faq-item__icon {
            transform: rotate(45deg);
            background: var(--color-accent);
            color: #fff;
        }
        .faq-item__body {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-spring), padding var(--transition-smooth);
        }
        .faq-item--open .faq-item__body {
            max-height: 300px;
            padding: 0 var(--space-lg) var(--space-md);
        }
        .faq-item__body p {
            color: var(--color-text-soft);
            font-size: 0.95rem;
            line-height: 1.7;
            margin: 0;
        }

        .cta-block {
            text-align: center;
            padding: var(--space-2xl) var(--space-lg);
            background: var(--color-bg-dark);
            border-radius: var(--radius-xl);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -15%;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: rgba(184, 147, 90, 0.12);
            pointer-events: none;
        }
        .cta-block h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: var(--space-sm);
            position: relative;
            z-index: 1;
        }
        .cta-block p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            margin-bottom: var(--space-lg);
            position: relative;
            z-index: 1;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn {
            display: inline-block;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.04em;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .btn--primary {
            background: var(--color-accent);
            color: #fff;
        }
        .btn--primary:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 22px rgba(184, 147, 90, 0.4);
        }
        .btn--primary:active {
            background: var(--color-accent-deep);
            transform: translateY(0);
        }
        .btn--primary:focus-visible {
            outline: 3px solid var(--color-accent-light);
            outline-offset: 3px;
        }
        .btn--outline {
            background: transparent;
            border: 2px solid #fff;
            color: #fff;
        }
        .btn--outline:hover {
            background: #fff;
            color: var(--color-bg-dark);
            transform: translateY(-2px);
        }

        .related-links {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
        }
        .related-link-card {
            padding: var(--space-lg);
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            text-align: center;
            transition: all var(--transition-fast);
            cursor: pointer;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: var(--space-sm);
        }
        .related-link-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--color-accent);
        }
        .related-link-card__icon {
            font-size: 2rem;
            color: var(--color-accent);
        }
        .related-link-card h4 {
            font-size: 0.95rem;
            margin: 0;
        }
        .related-link-card p {
            font-size: 0.8rem;
            color: var(--color-text-light);
            margin: 0;
            line-height: 1.4;
        }

        .site-footer {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
            padding: var(--space-xl) var(--space-lg) var(--space-md);
            font-size: 0.9rem;
            margin-top: auto;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--space-xl);
            max-width: 1100px;
            margin: 0 auto;
            padding-bottom: var(--space-lg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer__brand-name {
            font-weight: 700;
            font-size: 1.2rem;
            letter-spacing: 0.06em;
            margin-bottom: var(--space-xs);
            color: #fff;
        }
        .footer__brand-desc {
            color: rgba(232, 228, 220, 0.6);
            font-size: 0.85rem;
            line-height: 1.6;
        }
        .footer__col-title {
            font-weight: 600;
            letter-spacing: 0.06em;
            margin-bottom: var(--space-sm);
            color: #fff;
            font-size: 0.85rem;
            text-transform: uppercase;
        }
        .footer__col-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer__col-links a {
            color: rgba(232, 228, 220, 0.65);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }
        .footer__col-links a:hover {
            color: var(--color-accent-light);
        }
        .footer__bottom {
            max-width: 1100px;
            margin: var(--space-md) auto 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: var(--space-sm);
            font-size: 0.8rem;
            color: rgba(232, 228, 220, 0.45);
        }
        .footer__disclaimer {
            font-size: 0.75rem;
            color: rgba(232, 228, 220, 0.35);
            max-width: 500px;
            line-height: 1.5;
        }

        @media (max-width: 1200px) {
            :root {
                --nav-width: var(--nav-width-tablet);
            }
            .card-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .card-grid--3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .related-links {
                grid-template-columns: repeat(2, 1fr);
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .banner__content h1 {
                font-size: 2.3rem;
            }
        }

        @media (max-width: 1024px) {
            :root {
                --nav-width: 200px;
            }
            .side-nav {
                padding: 20px 14px 16px;
            }
            .side-nav__logo {
                font-size: 1.1rem;
                gap: 8px;
                margin-bottom: 22px;
            }
            .side-nav__logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1.1rem;
                border-radius: var(--radius-sm);
            }
            .side-nav__link {
                padding: 9px 10px;
                font-size: 0.85rem;
                gap: 7px;
                border-radius: var(--radius-sm);
            }
            .side-nav__cta-btn {
                font-size: 0.8rem;
                padding: 10px 14px;
                border-radius: var(--radius-sm);
            }
            .side-nav__footer-note {
                font-size: 0.7rem;
            }
            .container {
                padding: 0 var(--space-md);
            }
            .section {
                padding: var(--space-xl) 0;
            }
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-sm);
            }
            .card-grid--3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-sm);
            }
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-lg);
            }
            .banner {
                min-height: 300px;
            }
            .banner__content h1 {
                font-size: 2rem;
            }
            .banner__content p {
                font-size: 1rem;
            }
        }

        @media (max-width: 768px) {
            .side-nav {
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: var(--mobile-nav-height);
                flex-direction: row;
                align-items: center;
                padding: 0 14px;
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                overflow-y: visible;
                overflow-x: auto;
                gap: 0;
                background: var(--color-bg-dark);
                box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
                justify-content: flex-start;
                scrollbar-width: none;
            }
            .side-nav::-webkit-scrollbar {
                display: none;
            }
            .side-nav__logo {
                margin-bottom: 0;
                margin-right: 10px;
                flex-shrink: 0;
                font-size: 1rem;
                gap: 6px;
            }
            .side-nav__logo-icon {
                width: 30px;
                height: 30px;
                font-size: 1rem;
                border-radius: 6px;
            }
            .side-nav__logo-text {
                font-size: 0.9rem;
            }
            .side-nav__menu {
                flex-direction: row;
                gap: 2px;
                flex: 0 0 auto;
                overflow-x: auto;
                scrollbar-width: none;
            }
            .side-nav__menu::-webkit-scrollbar {
                display: none;
            }
            .side-nav__link {
                padding: 7px 10px;
                font-size: 0.75rem;
                gap: 4px;
                white-space: nowrap;
                border-radius: 14px;
                flex-shrink: 0;
            }
            .side-nav__link:hover {
                transform: none;
            }
            .side-nav__link--active {
                box-shadow: none;
                background: rgba(184, 147, 90, 0.25);
            }
            .side-nav__link-icon {
                font-size: 0.5rem;
            }
            .side-nav__cta {
                display: none;
            }
            .side-nav__footer-note {
                display: none;
            }
            .main-content {
                margin-left: 0;
                margin-top: var(--mobile-nav-height);
            }
            .container {
                padding: 0 var(--space-sm);
            }
            .section {
                padding: var(--space-lg) 0;
            }
            .section--tight {
                padding: var(--space-md) 0;
            }
            .banner {
                min-height: 260px;
                padding: var(--space-xl) 0;
            }
            .banner__content h1 {
                font-size: 1.7rem;
            }
            .banner__content p {
                font-size: 0.9rem;
            }
            .banner__badge {
                font-size: 0.75rem;
                padding: 5px 12px;
            }
            .card-grid,
            .card-grid--3,
            .card-grid--2 {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .stat-card__number {
                font-size: 2rem;
            }
            .stat-card__label {
                font-size: 0.8rem;
            }
            .related-links {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .list-block__item {
                padding: var(--space-sm);
                gap: var(--space-sm);
            }
            .list-block__item-num {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .footer__bottom {
                flex-direction: column;
                text-align: center;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.45rem;
            }
            .section-header__desc {
                font-size: 0.9rem;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .cta-block p {
                font-size: 0.9rem;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.85rem;
            }
            .faq-item__trigger {
                font-size: 0.9rem;
                padding: var(--space-sm) var(--space-md);
            }
            .faq-item__icon {
                width: 24px;
                height: 24px;
                font-size: 0.9rem;
            }
            .tag-cloud {
                gap: 7px;
            }
            .tag-cloud__tag {
                padding: 6px 13px;
                font-size: 0.8rem;
                border-radius: 18px;
            }
        }

        @media (max-width: 520px) {
            .side-nav__logo-text {
                display: none;
            }
            .side-nav__link {
                padding: 6px 8px;
                font-size: 0.7rem;
                gap: 3px;
                border-radius: 12px;
            }
            .side-nav__link-icon {
                font-size: 0.45rem;
            }
            .card-grid,
            .card-grid--3,
            .card-grid--2 {
                grid-template-columns: 1fr;
                gap: var(--space-sm);
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-card {
                padding: var(--space-md) var(--space-sm);
            }
            .stat-card__number {
                font-size: 1.7rem;
            }
            .related-links {
                grid-template-columns: 1fr;
            }
            .banner {
                min-height: 220px;
            }
            .banner__content h1 {
                font-size: 1.45rem;
            }
            .banner__content p {
                font-size: 0.85rem;
            }
            .list-block__item {
                flex-direction: column;
                align-items: flex-start;
            }
            .section {
                padding: var(--space-md) 0;
            }
            .section-header {
                margin-bottom: var(--space-md);
            }
            .cta-block {
                padding: var(--space-lg) var(--space-md);
                border-radius: var(--radius-lg);
            }
            .cta-block h2 {
                font-size: 1.3rem;
            }
            h1 {
                font-size: 1.55rem;
            }
            h2 {
                font-size: 1.25rem;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #1a1a2e;
            --color-accent: #c8a96e;
            --color-accent-hover: #b8944f;
            --color-accent-light: #f0e6d3;
            --color-bg: #fafaf8;
            --color-surface: #ffffff;
            --color-surface-alt: #f5f3ef;
            --color-text: #2c2c2c;
            --color-text-soft: #6b6b6b;
            --color-text-light: #8a8a8a;
            --color-border: #e8e4dc;
            --color-border-light: #f0ede7;
            --color-tag-bg: #f7f4ee;
            --color-tag-text: #8b7355;
            --color-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --color-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --color-shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
            --color-shadow-card: 0 2px 8px rgba(0, 0, 0, 0.05), 0 8px 24px rgba(0, 0, 0, 0.06);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 0.75rem;
            --spacing-md: 1.25rem;
            --spacing-lg: 2rem;
            --spacing-xl: 3rem;
            --spacing-2xl: 4.5rem;
            --spacing-3xl: 6rem;
            --nav-width: 248px;
            --font-heading: 'Georgia', 'Noto Serif SC', 'STSong', 'Songti SC', 'SimSun', 'serif';
            --font-body: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'sans-serif';
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            font-weight: 600;
            line-height: 1.3;
            color: var(--color-primary);
        }

        .page-wrapper {
            display: flex;
            min-height: 100vh;
        }

        /* Side Navigation - Desktop */
        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--color-primary);
            color: #e0dcd5;
            display: flex;
            flex-direction: column;
            padding: var(--spacing-xl) var(--spacing-md);
            z-index: 1000;
            overflow-y: auto;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 2px 0 24px rgba(0, 0, 0, 0.15);
            transition: transform var(--transition-smooth);
        }

        .side-nav__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            padding-bottom: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            color: #fff;
            transition: opacity var(--transition-fast);
            text-decoration: none;
        }

        .side-nav__logo:hover {
            opacity: 0.85;
        }

        .side-nav__logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: var(--color-accent);
            color: var(--color-primary);
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            flex-shrink: 0;
            letter-spacing: 0.5px;
        }

        .side-nav__logo-text {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            color: #fff;
            white-space: nowrap;
        }

        .side-nav__menu {
            display: flex;
            flex-direction: column;
            gap: 2px;
            flex: 1;
        }

        .side-nav__link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            color: #c4bfb4;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.02em;
            white-space: nowrap;
            text-decoration: none;
        }

        .side-nav__link:hover {
            background: rgba(255, 255, 255, 0.05);
            color: #e8e4dc;
        }

        .side-nav__link--active {
            background: rgba(200, 169, 110, 0.15);
            color: var(--color-accent);
            font-weight: 500;
        }

        .side-nav__link--active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 22px;
            border-radius: 0 3px 3px 0;
            background: var(--color-accent);
        }

        .side-nav__link-icon {
            font-size: 0.7rem;
            flex-shrink: 0;
            opacity: 0.7;
        }

        .side-nav__link--active .side-nav__link-icon {
            opacity: 1;
            color: var(--color-accent);
        }

        .side-nav__cta {
            margin-top: var(--spacing-lg);
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .side-nav__cta-btn {
            display: block;
            text-align: center;
            padding: 11px 18px;
            background: var(--color-accent);
            color: var(--color-primary);
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-bounce);
            text-decoration: none;
        }

        .side-nav__cta-btn:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(200, 169, 110, 0.35);
        }

        .side-nav__cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(200, 169, 110, 0.25);
        }

        .side-nav__footer-note {
            margin-top: auto;
            padding-top: var(--spacing-md);
            font-size: 0.78rem;
            color: rgba(200, 190, 175, 0.5);
            letter-spacing: 0.04em;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        /* Mobile nav toggle */
        .mobile-nav-toggle {
            display: none;
            position: fixed;
            top: 14px;
            right: 16px;
            z-index: 1100;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-md);
            background: var(--color-primary);
            color: #fff;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: var(--color-shadow-md);
            border: 1px solid rgba(255, 255, 255, 0.1);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .mobile-nav-toggle:hover {
            background: #2a2a3e;
        }

        .mobile-nav-toggle__bar {
            display: block;
            width: 20px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition-smooth);
            position: relative;
        }

        .mobile-nav-toggle__bar::before,
        .mobile-nav-toggle__bar::after {
            content: '';
            display: block;
            width: 20px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            position: absolute;
            transition: all var(--transition-smooth);
        }

        .mobile-nav-toggle__bar::before {
            top: -6px;
        }
        .mobile-nav-toggle__bar::after {
            top: 6px;
        }

        .mobile-nav-toggle--open .mobile-nav-toggle__bar {
            background: transparent;
        }
        .mobile-nav-toggle--open .mobile-nav-toggle__bar::before {
            top: 0;
            transform: rotate(45deg);
        }
        .mobile-nav-toggle--open .mobile-nav-toggle__bar::after {
            top: 0;
            transform: rotate(-45deg);
        }

        /* Mobile overlay */
        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .nav-overlay--visible {
            opacity: 1;
        }

        /* Main content area */
        .main-content {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* Container */
        .container {
            width: 100%;
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
        }

        .container--narrow {
            max-width: 860px;
        }

        /* Page Banner */
        .page-banner {
            position: relative;
            padding: var(--spacing-3xl) 0 var(--spacing-2xl);
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 26, 46, 0.82) 0%, rgba(26, 26, 46, 0.7) 60%, rgba(26, 26, 46, 0.88) 100%);
            z-index: 1;
        }

        .page-banner__content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .page-banner__label {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(200, 169, 110, 0.2);
            border: 1px solid rgba(200, 169, 110, 0.4);
            border-radius: var(--radius-full);
            font-size: 0.82rem;
            letter-spacing: 0.06em;
            color: var(--color-accent);
            margin-bottom: var(--spacing-md);
            font-weight: 500;
        }

        .page-banner__title {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.02em;
            line-height: 1.25;
        }

        .page-banner__desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.7;
            max-width: 560px;
        }

        /* Section styles */
        .section {
            padding: var(--spacing-2xl) 0;
        }

        .section--alt {
            background: var(--color-surface-alt);
        }

        .section--surface {
            background: var(--color-surface);
        }

        .section__header {
            margin-bottom: var(--spacing-xl);
        }

        .section__label {
            display: inline-block;
            font-size: 0.8rem;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            text-transform: uppercase;
            font-weight: 600;
            margin-bottom: var(--spacing-xs);
        }

        .section__title {
            font-family: var(--font-heading);
            font-size: 2rem;
            color: var(--color-primary);
            font-weight: 700;
            letter-spacing: 0.02em;
            margin-bottom: var(--spacing-sm);
        }

        .section__subtitle {
            font-size: 1rem;
            color: var(--color-text-soft);
            max-width: 600px;
            line-height: 1.7;
        }

        /* News cards grid */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .news-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--color-shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--color-border-light);
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--color-shadow-lg);
            border-color: var(--color-border);
        }

        .news-card__image-wrap {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-surface-alt);
        }

        .news-card__image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .news-card:hover .news-card__image-wrap img {
            transform: scale(1.04);
        }

        .news-card__tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            background: rgba(26, 26, 46, 0.75);
            color: var(--color-accent);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            border-radius: var(--radius-full);
            backdrop-filter: blur(6px);
        }

        .news-card__body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-card__date {
            font-size: 0.8rem;
            color: var(--color-text-light);
            margin-bottom: 8px;
            letter-spacing: 0.03em;
        }

        .news-card__title {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card__excerpt {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card__read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: var(--spacing-sm);
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            padding: 4px 0;
        }

        .news-card__read-more:hover {
            color: var(--color-accent-hover);
            gap: 10px;
        }

        .news-card__read-more::after {
            content: '→';
            font-size: 1rem;
            transition: transform var(--transition-fast);
        }

        .news-card__read-more:hover::after {
            transform: translateX(3px);
        }

        /* Trend tags */
        .trend-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .trend-tag {
            padding: 9px 18px;
            background: var(--color-tag-bg);
            color: var(--color-tag-text);
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: 1px solid transparent;
            text-decoration: none;
        }

        .trend-tag:hover {
            background: var(--color-accent-light);
            border-color: var(--color-accent);
            color: var(--color-accent-hover);
            transform: translateY(-1px);
        }

        .trend-tag--hot {
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
        }
        .trend-tag--hot:hover {
            background: var(--color-accent-hover);
            color: #fff;
            border-color: var(--color-accent-hover);
        }

        /* Featured deep-dive */
        .deep-dive-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-lg);
        }

        .deep-dive-card {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--color-shadow-card);
            transition: all var(--transition-smooth);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
        }

        .deep-dive-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--color-shadow-lg);
        }

        .deep-dive-card__image {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--color-surface-alt);
        }

        .deep-dive-card__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .deep-dive-card:hover .deep-dive-card__image img {
            transform: scale(1.03);
        }

        .deep-dive-card__body {
            padding: var(--spacing-lg);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .deep-dive-card__kicker {
            font-size: 0.78rem;
            letter-spacing: 0.07em;
            color: var(--color-accent);
            font-weight: 600;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .deep-dive-card__title {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
            line-height: 1.35;
        }

        .deep-dive-card__text {
            font-size: 0.95rem;
            color: var(--color-text-soft);
            line-height: 1.7;
            flex: 1;
        }

        .deep-dive-card__link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: var(--spacing-md);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-accent);
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .deep-dive-card__link:hover {
            color: var(--color-accent-hover);
            gap: 12px;
        }
        .deep-dive-card__link::after {
            content: '→';
            font-size: 1.05rem;
            transition: transform var(--transition-fast);
        }
        .deep-dive-card__link:hover::after {
            transform: translateX(3px);
        }

        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 28px;
            border-left: 2px solid var(--color-border);
        }

        .timeline__item {
            position: relative;
            margin-bottom: var(--spacing-xl);
            padding-left: var(--spacing-lg);
        }

        .timeline__item:last-child {
            margin-bottom: 0;
        }

        .timeline__dot {
            position: absolute;
            left: -37px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--color-accent);
            box-shadow: 0 0 0 6px rgba(200, 169, 110, 0.18);
        }

        .timeline__date {
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-accent);
            margin-bottom: 4px;
        }

        .timeline__title {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 6px;
        }

        .timeline__desc {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.6;
        }

        /* Stats row */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
        }

        .stat-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl) var(--spacing-lg);
            text-align: center;
            box-shadow: var(--color-shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
        }

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

        .stat-card__number {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }

        .stat-card__label {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            letter-spacing: 0.04em;
        }

        /* CTA section */
        .cta-section {
            background: var(--color-primary);
            padding: var(--spacing-2xl) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(200, 169, 110, 0.06);
            pointer-events: none;
        }

        .cta-section__title {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            color: #fff;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            position: relative;
            z-index: 1;
        }

        .cta-section__text {
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: var(--spacing-lg);
            font-size: 1rem;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section__form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .cta-section__input {
            flex: 1;
            padding: 13px 18px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 0.95rem;
            outline: none;
            transition: all var(--transition-fast);
        }

        .cta-section__input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .cta-section__input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 3px rgba(200, 169, 110, 0.15);
        }

        .cta-section__btn {
            padding: 13px 28px;
            background: var(--color-accent);
            color: var(--color-primary);
            border-radius: var(--radius-md);
            font-weight: 700;
            letter-spacing: 0.04em;
            font-size: 0.95rem;
            transition: all var(--transition-bounce);
            white-space: nowrap;
            cursor: pointer;
            border: none;
        }

        .cta-section__btn:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200, 169, 110, 0.4);
        }
        .cta-section__btn:active {
            transform: translateY(0);
        }

        /* Footer */
        .site-footer {
            background: #14141f;
            color: #bbb8ae;
            padding: var(--spacing-2xl) 0 var(--spacing-lg);
            margin-top: auto;
        }

        .footer__grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
            padding-bottom: var(--spacing-lg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer__brand-name {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: 0.03em;
        }

        .footer__brand-desc {
            font-size: 0.88rem;
            color: #99958a;
            line-height: 1.6;
            max-width: 340px;
        }

        .footer__col-title {
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            font-size: 0.9rem;
            letter-spacing: 0.05em;
        }

        .footer__col-links {
            display: flex;
            flex-direction: column;
            gap: 9px;
        }

        .footer__col-links a {
            color: #99958a;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
            text-decoration: none;
        }
        .footer__col-links a:hover {
            color: var(--color-accent);
        }

        .footer__bottom {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
            text-align: center;
            font-size: 0.82rem;
            color: #77736a;
        }

        .footer__disclaimer {
            font-size: 0.78rem;
            color: #66625a;
            max-width: 600px;
            line-height: 1.5;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --nav-width: 220px;
                --spacing-2xl: 3.2rem;
                --spacing-3xl: 4rem;
            }
            .page-banner__title {
                font-size: 2.2rem;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
            }
            .deep-dive-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
            }
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-width: 0;
                --spacing-xl: 2rem;
                --spacing-2xl: 2.5rem;
                --spacing-3xl: 2.8rem;
            }
            .page-wrapper {
                flex-direction: column;
            }
            .side-nav {
                transform: translateX(-100%);
                width: 260px;
                position: fixed;
                top: 0;
                left: 0;
                height: 100vh;
                z-index: 1050;
                transition: transform var(--transition-smooth);
            }
            .side-nav--open {
                transform: translateX(0);
                box-shadow: 4px 0 40px rgba(0, 0, 0, 0.4);
            }
            .nav-overlay {
                display: block;
                pointer-events: none;
            }
            .nav-overlay--visible {
                pointer-events: auto;
                opacity: 1;
            }
            .mobile-nav-toggle {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 0;
            }
            .page-banner {
                padding: var(--spacing-2xl) 0 var(--spacing-xl);
            }
            .page-banner__title {
                font-size: 1.8rem;
            }
            .page-banner__desc {
                font-size: 0.95rem;
            }
            .section__title {
                font-size: 1.5rem;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .deep-dive-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }
            .stat-card__number {
                font-size: 1.8rem;
            }
            .cta-section__form {
                flex-direction: column;
                padding: 0 var(--spacing-md);
            }
            .cta-section__btn {
                width: 100%;
                text-align: center;
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .timeline {
                padding-left: 20px;
            }
            .timeline__item {
                padding-left: var(--spacing-md);
            }
            .timeline__dot {
                left: -27px;
                width: 11px;
                height: 11px;
                box-shadow: 0 0 0 4px rgba(200, 169, 110, 0.18);
            }
            .container {
                padding: 0 var(--spacing-md);
            }
            .deep-dive-card__title {
                font-size: 1.2rem;
            }
            .trend-tags {
                gap: 8px;
            }
            .trend-tag {
                padding: 7px 14px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 520px) {
            .page-banner__title {
                font-size: 1.5rem;
            }
            .section__title {
                font-size: 1.3rem;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }
            .stat-card {
                padding: var(--spacing-md) var(--spacing-sm);
            }
            .stat-card__number {
                font-size: 1.5rem;
            }
            .stat-card__label {
                font-size: 0.78rem;
            }
            .news-card__title {
                font-size: 1rem;
            }
            .deep-dive-card__body {
                padding: var(--spacing-md);
            }
            .cta-section__title {
                font-size: 1.4rem;
            }
        }