/* roulang page: index */
/* ============================================================
               :root 设计变量
               ============================================================ */
        :root {
            --color-primary: #1A2A3A;
            --color-primary-light: #2C4056;
            --color-secondary: #C9A96E;
            --color-secondary-light: #E0C898;
            --color-accent: #8B5E3C;
            --color-bg: #F7F5F2;
            --color-bg-alt: #EFECE8;
            --color-bg-dark: #1A2A3A;
            --color-text: #2D2D2D;
            --color-text-light: #6B6B6B;
            --color-text-inverse: #FFFFFF;
            --color-border: #E0DCD6;
            --color-border-light: #F0EDE8;
            --color-white: #FFFFFF;
            --color-success: #4A7C59;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 58, 0.06);
            --shadow-md: 0 8px 28px rgba(26, 42, 58, 0.10);
            --shadow-lg: 0 20px 48px rgba(26, 42, 58, 0.14);
            --shadow-xl: 0 32px 64px rgba(26, 42, 58, 0.18);
            --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-heading: 'Inter', 'PingFang SC', 'Microsoft YaHei', serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;
            --max-width: 1200px;
            --header-height: 72px;
            --bottom-tab-height: 64px;
        }

        /* ============================================================
               基础 reset / base
               ============================================================ */
        *,
        *::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-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            padding-top: var(--header-height);
            padding-bottom: var(--bottom-tab-height);
        }

        @media screen and (min-width: 768px) {
            body {
                padding-bottom: 0;
            }
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--color-secondary);
        }
        a:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

        ul {
            list-style: none;
        }

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

        /* ============================================================
               容器
               ============================================================ */
        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-md);
        }

        .container-narrow {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 var(--space-md);
        }

        .section-padding {
            padding: var(--space-lg) 0;
        }

        @media screen and (max-width: 767px) {
            .section-padding {
                padding: var(--space-md) 0;
            }
            :root {
                --space-lg: 2.5rem;
                --space-xl: 4rem;
            }
            .container-custom {
                padding: 0 var(--space-sm);
            }
        }

        /* ============================================================
               头部 / 导航 — 桌面顶部
               ============================================================ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-md);
        }

        .logo {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

        .logo i {
            color: var(--color-secondary);
            font-size: 1.6rem;
        }

        .logo:hover {
            color: var(--color-primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .main-nav a {
            display: flex;
            align-items: center;
            padding: 0.5rem 1.25rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-light);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            background: var(--color-bg);
        }

        .main-nav a.active {
            color: var(--color-primary);
            background: var(--color-bg);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--color-secondary);
            border-radius: 2px;
        }

        .main-nav a.nav-cta {
            background: var(--color-primary);
            color: var(--color-white);
            border-radius: var(--radius-sm);
            padding: 0.5rem 1.5rem;
            margin-left: 0.5rem;
        }

        .main-nav a.nav-cta:hover {
            background: var(--color-primary-light);
            color: var(--color-white);
        }

        .desktop-nav {
            display: flex;
        }

        .mobile-nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-primary);
            cursor: pointer;
            padding: 0.25rem;
            border-radius: var(--radius-sm);
        }

        .mobile-nav-toggle:focus-visible {
            outline: 2px solid var(--color-secondary);
        }

        @media screen and (max-width: 767px) {
            .desktop-nav {
                display: none;
            }
            .mobile-nav-toggle {
                display: block;
            }
            .header-inner {
                padding: 0 var(--space-sm);
            }
            .logo {
                font-size: 1.2rem;
            }
            .logo i {
                font-size: 1.3rem;
            }

            .mobile-nav-open .desktop-nav {
                display: flex;
                flex-direction: column;
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-white);
                padding: var(--space-sm) var(--space-md);
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--color-border);
                z-index: 999;
                gap: 0.25rem;
            }
            .mobile-nav-open .desktop-nav a {
                padding: 0.75rem 1rem;
                font-size: 1.05rem;
            }
            .mobile-nav-open .desktop-nav a.nav-cta {
                margin-left: 0;
                margin-top: 0.5rem;
                text-align: center;
            }
            .mobile-nav-open .desktop-nav a.active::after {
                display: none;
            }
            .mobile-nav-open .desktop-nav a.active {
                border-left: 3px solid var(--color-secondary);
                background: var(--color-bg);
            }
        }

        /* ============================================================
               移动端底部 Tab 导航
               ============================================================ */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            height: var(--bottom-tab-height);
            background: var(--color-white);
            border-top: 1px solid var(--color-border-light);
            box-shadow: 0 -2px 12px rgba(26, 42, 58, 0.06);
            justify-content: space-around;
            align-items: center;
            padding: 0 0.5rem;
        }

        .bottom-tab-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            padding: 0.35rem 0.75rem;
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--color-text-light);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            min-width: 56px;
        }

        .bottom-tab-nav a i {
            font-size: 1.25rem;
            transition: all var(--transition);
        }

        .bottom-tab-nav a:hover {
            color: var(--color-primary);
            background: var(--color-bg);
        }

        .bottom-tab-nav a.active {
            color: var(--color-secondary);
        }

        .bottom-tab-nav a.active i {
            color: var(--color-secondary);
        }

        .bottom-tab-nav a span {
            line-height: 1.2;
        }

        @media screen and (max-width: 767px) {
            .bottom-tab-nav {
                display: flex;
            }
        }

        /* ============================================================
               Hero / 首屏
               ============================================================ */
        .hero-section {
            position: relative;
            min-height: 76vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: var(--space-xl) var(--space-md);
            background: var(--color-primary) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 42, 58, 0.82) 0%, rgba(26, 42, 58, 0.55) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            color: var(--color-text-inverse);
        }

        .hero-content h1 {
            font-size: 3.4rem;
            font-weight: 700;
            color: var(--color-white);
            letter-spacing: 0.02em;
            margin-bottom: 0.75rem;
            line-height: 1.15;
        }

        .hero-content .hero-sub {
            font-size: 1.25rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 1.5rem;
            font-weight: 400;
            letter-spacing: 0.03em;
        }

        .hero-content .hero-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            margin: 0 auto 2rem;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
            justify-content: center;
        }

        .hero-actions .btn-primary {
            background: var(--color-secondary);
            color: var(--color-primary);
            padding: 0.85rem 2.4rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .hero-actions .btn-primary:hover {
            background: var(--color-secondary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .hero-actions .btn-outline {
            background: transparent;
            color: var(--color-white);
            padding: 0.85rem 2.4rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            border: 2px solid rgba(255, 255, 255, 0.4);
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .hero-actions .btn-outline:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(255, 255, 255, 0.05);
            transform: translateY(-2px);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            padding: 0.35rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 1.25rem;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .hero-badge i {
            color: var(--color-secondary);
        }

        @media screen and (max-width: 767px) {
            .hero-section {
                min-height: 64vh;
                padding: var(--space-lg) var(--space-sm);
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-content .hero-sub {
                font-size: 1rem;
            }
            .hero-content .hero-desc {
                font-size: 0.95rem;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                padding: 0.7rem 1.6rem;
                font-size: 0.95rem;
                width: 100%;
                justify-content: center;
            }
        }

        @media screen and (max-width: 480px) {
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-section {
                min-height: 56vh;
            }
        }

        /* ============================================================
               品牌故事板块
               ============================================================ */
        .brand-story {
            background: var(--color-white);
        }

        .brand-story .grid-x {
            align-items: center;
            gap: var(--space-md);
        }

        .brand-story .brand-image {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            width: 100%;
            height: 360px;
            object-fit: cover;
        }

        .brand-story .brand-text h2 {
            font-size: 2rem;
            margin-bottom: 0.75rem;
        }

        .brand-story .brand-text .brand-tag {
            display: inline-block;
            background: var(--color-secondary-light);
            color: var(--color-primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            margin-bottom: 0.75rem;
            letter-spacing: 0.04em;
        }

        .brand-story .brand-text p {
            color: var(--color-text-light);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 0.75rem;
        }

        @media screen and (max-width: 767px) {
            .brand-story .brand-text h2 {
                font-size: 1.5rem;
                margin-top: 1rem;
            }
            .brand-story .brand-image {
                height: 240px;
            }
        }

        /* ============================================================
               核心品类 / 卡片网格
               ============================================================ */
        .category-cards {
            background: var(--color-bg);
        }

        .section-title {
            text-align: center;
            margin-bottom: var(--space-lg);
        }

        .section-title h2 {
            font-size: 2.2rem;
            margin-bottom: 0.5rem;
        }

        .section-title p {
            color: var(--color-text-light);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--space-md);
        }

        .card-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--color-border-light);
        }

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

        .card-item .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }

        .card-item .card-body {
            padding: 1.25rem 1.5rem 1.5rem;
        }

        .card-item .card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 0.4rem;
        }

        .card-item .card-body p {
            color: var(--color-text-light);
            font-size: 0.92rem;
            line-height: 1.6;
            margin-bottom: 0.75rem;
        }

        .card-item .card-body .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--color-accent);
            background: var(--color-bg-alt);
            padding: 0.15rem 0.6rem;
            border-radius: 50px;
            margin-bottom: 0.5rem;
        }

        .card-item .card-body .card-link {
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            transition: gap var(--transition);
        }

        .card-item .card-body .card-link:hover {
            gap: 0.6rem;
            color: var(--color-secondary);
        }

        @media screen and (max-width: 767px) {
            .section-title h2 {
                font-size: 1.6rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-item .card-img {
                height: 180px;
            }
        }

        /* ============================================================
               数据统计板块
               ============================================================ */
        .stats-section {
            background: var(--color-bg-dark);
            color: var(--color-white);
            padding: var(--space-lg) 0;
            position: relative;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(26, 42, 58, 0.85);
            z-index: 1;
        }

        .stats-section .container-custom {
            position: relative;
            z-index: 2;
        }

        .stats-section .section-title h2 {
            color: var(--color-white);
        }

        .stats-section .section-title p {
            color: rgba(255, 255, 255, 0.7);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: var(--space-md);
            text-align: center;
            margin-top: var(--space-md);
        }

        .stat-item {
            padding: var(--space-md) var(--space-sm);
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(4px);
            transition: all var(--transition);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-2px);
        }

        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--color-secondary);
            line-height: 1.2;
            margin-bottom: 0.3rem;
        }

        .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.8);
        }

        @media screen and (max-width: 767px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-sm);
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
            .stat-item {
                padding: var(--space-sm);
            }
        }

        /* ============================================================
               最新资讯 / CMS 列表
               ============================================================ */
        .news-section {
            background: var(--color-white);
        }

        .news-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: var(--space-md);
        }

        .news-item {
            display: flex;
            flex-direction: column;
            background: var(--color-bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }

        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
            transform: translateY(-2px);
        }

        .news-item .news-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
            flex-shrink: 0;
        }

        .news-item .news-body {
            padding: 1.25rem 1.5rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-item .news-body .news-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.8rem;
            color: var(--color-text-light);
            margin-bottom: 0.5rem;
        }

        .news-item .news-body .news-meta .news-cat {
            background: var(--color-secondary-light);
            color: var(--color-primary);
            padding: 0.1rem 0.6rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.7rem;
        }

        .news-item .news-body .news-meta .news-date i {
            margin-right: 0.25rem;
        }

        .news-item .news-body h3 {
            font-size: 1.1rem;
            margin-bottom: 0.4rem;
            line-height: 1.35;
        }

        .news-item .news-body h3 a {
            color: var(--color-primary);
        }

        .news-item .news-body h3 a:hover {
            color: var(--color-secondary);
        }

        .news-item .news-body p {
            color: var(--color-text-light);
            font-size: 0.9rem;
            line-height: 1.6;
            flex: 1;
        }

        .news-empty {
            text-align: center;
            padding: var(--space-lg) var(--space-md);
            color: var(--color-text-light);
            background: var(--color-bg);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }

        .news-empty i {
            font-size: 2.5rem;
            color: var(--color-border);
            margin-bottom: 0.75rem;
            display: block;
        }

        @media screen and (max-width: 767px) {
            .news-list {
                grid-template-columns: 1fr;
            }
            .news-item .news-img {
                height: 160px;
            }
        }

        /* ============================================================
               特色优势 / 流程步骤
               ============================================================ */
        .features-section {
            background: var(--color-bg);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: var(--space-md);
        }

        .feature-item {
            text-align: center;
            padding: var(--space-md) var(--space-sm);
            background: var(--color-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }

        .feature-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .feature-item .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto var(--space-sm);
            background: var(--color-bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--color-secondary);
            transition: all var(--transition);
        }

        .feature-item:hover .feature-icon {
            background: var(--color-secondary-light);
            color: var(--color-primary);
        }

        .feature-item h3 {
            font-size: 1.1rem;
            margin-bottom: 0.4rem;
        }

        .feature-item p {
            color: var(--color-text-light);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* 步骤流程 */
        .steps-section {
            background: var(--color-white);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--space-md);
            counter-reset: step;
        }

        .step-item {
            text-align: center;
            padding: var(--space-md) var(--space-sm);
            position: relative;
            counter-increment: step;
        }

        .step-item .step-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--color-secondary);
            opacity: 0.3;
            line-height: 1;
            margin-bottom: 0.5rem;
            font-family: var(--font-heading);
        }

        .step-item h3 {
            font-size: 1.1rem;
            margin-bottom: 0.4rem;
        }

        .step-item p {
            color: var(--color-text-light);
            font-size: 0.9rem;
            line-height: 1.6;
            max-width: 280px;
            margin: 0 auto;
        }

        @media screen and (max-width: 767px) {
            .features-grid {
                grid-template-columns: 1fr 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media screen and (max-width: 480px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ============================================================
               FAQ 板块
               ============================================================ */
        .faq-section {
            background: var(--color-bg);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            margin-bottom: var(--space-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-primary);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-body);
            transition: all var(--transition);
        }

        .faq-item .faq-question i {
            font-size: 1.1rem;
            color: var(--color-secondary);
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 1rem;
        }

        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }

        .faq-item .faq-question:hover {
            color: var(--color-secondary);
        }

        .faq-item .faq-answer {
            padding: 0 1.5rem 1.1rem;
            color: var(--color-text-light);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }

        .faq-item .faq-answer.open {
            display: block;
        }

        .faq-item .faq-question:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: -2px;
        }

        @media screen and (max-width: 767px) {
            .faq-item .faq-question {
                padding: 1rem 1.2rem;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                padding: 0 1.2rem 1rem;
                font-size: 0.9rem;
            }
        }

        /* ============================================================
               CTA 板块
               ============================================================ */
        .cta-section {
            background: var(--color-primary) url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            padding: var(--space-xl) 0;
            position: relative;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 42, 58, 0.88) 0%, rgba(26, 42, 58, 0.70) 100%);
            z-index: 1;
        }

        .cta-section .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
            color: var(--color-white);
        }

        .cta-section h2 {
            font-size: 2.2rem;
            color: var(--color-white);
            margin-bottom: 0.75rem;
        }

        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 1.5rem;
        }

        .cta-section .btn-cta {
            background: var(--color-secondary);
            color: var(--color-primary);
            padding: 0.9rem 3rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }

        .cta-section .btn-cta:hover {
            background: var(--color-secondary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .cta-section .btn-cta-outline {
            background: transparent;
            color: var(--color-white);
            padding: 0.9rem 2.4rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            border: 2px solid rgba(255, 255, 255, 0.3);
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            margin-left: var(--space-sm);
        }

        .cta-section .btn-cta-outline:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(255, 255, 255, 0.05);
            transform: translateY(-2px);
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: var(--space-sm);
        }

        @media screen and (max-width: 767px) {
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-cta,
            .cta-section .btn-cta-outline {
                padding: 0.75rem 1.8rem;
                font-size: 0.95rem;
                width: 100%;
                justify-content: center;
                margin-left: 0;
            }
        }

        /* ============================================================
               页脚
               ============================================================ */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--space-lg) 0 var(--space-md);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-md);
            margin-bottom: var(--space-md);
        }

        .site-footer .footer-brand .logo {
            color: var(--color-white);
            margin-bottom: 0.75rem;
            font-size: 1.3rem;
        }

        .site-footer .footer-brand .logo i {
            color: var(--color-secondary);
        }

        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 300px;
            color: rgba(255, 255, 255, 0.6);
        }

        .site-footer h4 {
            color: var(--color-white);
            font-size: 1rem;
            margin-bottom: 0.75rem;
            font-weight: 600;
        }

        .site-footer ul li {
            margin-bottom: 0.35rem;
        }

        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: all var(--transition);
        }

        .site-footer ul li a:hover {
            color: var(--color-secondary);
            padding-left: 3px;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--space-md);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: var(--space-sm);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }

        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

        .site-footer .footer-bottom a:hover {
            color: var(--color-secondary);
        }

        .site-footer .footer-bottom .footer-social {
            display: flex;
            gap: 0.75rem;
        }

        .site-footer .footer-bottom .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            transition: all var(--transition);
        }

        .site-footer .footer-bottom .footer-social a:hover {
            background: var(--color-secondary);
            color: var(--color-primary);
        }

        @media screen and (max-width: 767px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md) var(--space-sm);
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer {
                padding-bottom: calc(var(--bottom-tab-height) + var(--space-md));
            }
        }

        @media screen and (max-width: 480px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ============================================================
               通用工具类
               ============================================================ */
        .text-center {
            text-align: center;
        }
        .text-secondary {
            color: var(--color-secondary);
        }
        .mt-sm {
            margin-top: var(--space-sm);
        }
        .mt-md {
            margin-top: var(--space-md);
        }
        .mb-sm {
            margin-bottom: var(--space-sm);
        }
        .mb-md {
            margin-bottom: var(--space-md);
        }
        .gap-sm {
            gap: var(--space-sm);
        }

        .divider {
            width: 60px;
            height: 3px;
            background: var(--color-secondary);
            border-radius: 4px;
            margin: 0.75rem auto 1.25rem;
        }

        .divider-left {
            margin: 0.75rem 0 1.25rem;
        }

        /* ============================================================
               Foundation 覆盖微调
               ============================================================ */
        .grid-container {
            max-width: var(--max-width);
        }

        .cell {
            margin-bottom: 0;
        }

        /* 选中状态 */
        ::selection {
            background: var(--color-secondary-light);
            color: var(--color-primary);
        }

        /* 滚动条 */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--color-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--color-border);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--color-text-light);
        }

        /* ============================================================
               按钮通用
               ============================================================ */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.75rem 1.8rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            font-family: var(--font-body);
            text-decoration: none;
        }

        .btn:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
        }

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

        .btn-primary:hover {
            background: var(--color-secondary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-dark {
            background: var(--color-primary);
            color: var(--color-white);
        }

        .btn-dark:hover {
            background: var(--color-primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--color-white);
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .btn-outline-light:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(255, 255, 255, 0.05);
            transform: translateY(-2px);
        }

        /* ============================================================
               动画
               ============================================================ */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-in {
            animation: fadeInUp 0.6s ease forwards;
        }

        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: article */
:root {
            --primary: #b8862d;
            --primary-dark: #9a7028;
            --primary-light: #d4a84b;
            --primary-bg: #fdf8f0;
            --accent: #2c1810;
            --accent-light: #4a3228;
            --bg-white: #ffffff;
            --bg-light: #f9f6f2;
            --bg-dark: #1a0f0a;
            --text: #2c1810;
            --text-light: #6b5a4e;
            --text-white: #f5f0eb;
            --border: #e8ddd0;
            --border-light: #f0e8dd;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(44,24,16,0.06);
            --shadow-md: 0 8px 30px rgba(44,24,16,0.10);
            --shadow-lg: 0 20px 50px rgba(44,24,16,0.14);
            --font-serif: 'Georgia', 'Noto Serif SC', serif;
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

        html { scroll-behavior: smooth; }

        body {
            font-family: var(--font-sans);
            color: var(--text);
            background: var(--bg-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-family: var(--font-serif); font-weight: 700; line-height: 1.3; color: var(--accent); }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(12px);
            background: rgba(255,255,255,0.96);
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-serif);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 1px;
        }
        .logo i { color: var(--primary); font-size: 1.6rem; }
        .logo:hover i { transform: rotate(-8deg); }
        .logo:hover { color: var(--accent); }

        .main-nav { display: flex; align-items: center; gap: 28px; }
        .main-nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            padding: 6px 0;
            position: relative;
            letter-spacing: 0.3px;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: var(--transition);
        }
        .main-nav a:hover::after,
        .main-nav a.active::after { width: 100%; }
        .main-nav a:hover { color: var(--accent); }
        .main-nav a.active { color: var(--accent); font-weight: 600; }
        .main-nav a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 22px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.5px;
        }
        .main-nav a.nav-cta::after { display: none; }
        .main-nav a.nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 15px rgba(184,134,45,0.3); }

        .mobile-nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--accent); cursor: pointer; padding: 4px; }

        /* ===== Page Hero ===== */
        .page-hero {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--accent-light) 100%);
            padding: 80px 0 70px;
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .page-hero .container-custom { position: relative; z-index: 2; }
        .page-hero h1 {
            font-size: 2.6rem;
            color: var(--text-white);
            max-width: 800px;
            margin-bottom: 16px;
            line-height: 1.25;
            letter-spacing: 1px;
        }
        .page-hero .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            color: rgba(245,240,235,0.75);
            font-size: 0.95rem;
        }
        .page-hero .meta-info i { margin-right: 6px; color: var(--primary-light); }
        .page-hero .meta-info span { display: inline-flex; align-items: center; }

        /* ===== Article Main ===== */
        .article-main {
            padding: 60px 0 80px;
            background: var(--bg-white);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 50px;
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-content h2 {
            font-size: 1.6rem;
            margin: 40px 0 16px;
            color: var(--accent);
        }
        .article-content h3 {
            font-size: 1.25rem;
            margin: 28px 0 12px;
            color: var(--accent-light);
        }
        .article-content p {
            margin-bottom: 18px;
        }
        .article-content ul, .article-content ol {
            margin: 16px 0 20px 24px;
            list-style: disc;
        }
        .article-content li { margin-bottom: 8px; }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 28px 0;
            box-shadow: var(--shadow-md);
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-bg);
            padding: 20px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-light);
        }
        .article-content a { color: var(--primary); text-decoration: underline; }
        .article-content a:hover { color: var(--primary-dark); }

        .article-sidebar .sidebar-card {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            margin-bottom: 28px;
            border: 1px solid var(--border-light);
        }
        .article-sidebar .sidebar-card h3 {
            font-size: 1.15rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .article-sidebar .sidebar-card h3 i { color: var(--primary); }
        .article-sidebar .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .article-sidebar .sidebar-card ul li:last-child { border-bottom: none; }
        .article-sidebar .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-light);
        }
        .article-sidebar .sidebar-card ul li a:hover { color: var(--primary); padding-left: 4px; }
        .article-sidebar .sidebar-card ul li a i { color: var(--primary-light); font-size: 0.8rem; }

        .sidebar-cta-card {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            color: #fff;
        }
        .sidebar-cta-card h4 { font-size: 1.2rem; color: #fff; margin-bottom: 8px; }
        .sidebar-cta-card p { font-size: 0.95rem; opacity: 0.9; margin-bottom: 18px; }
        .sidebar-cta-card .btn-white {
            display: inline-block;
            background: #fff;
            color: var(--primary-dark);
            padding: 10px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
        }
        .sidebar-cta-card .btn-white:hover { background: var(--bg-light); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.15); }

        .not-found-box {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-box i { font-size: 4rem; color: var(--border); margin-bottom: 20px; }
        .not-found-box h2 { font-size: 1.8rem; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-light); margin-bottom: 24px; }
        .not-found-box .btn-back {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 600;
        }
        .not-found-box .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); }

        /* ===== Related Section ===== */
        .related-section {
            background: var(--bg-light);
            padding: 60px 0;
            border-top: 1px solid var(--border-light);
        }
        .related-section h2 {
            font-size: 1.8rem;
            text-align: center;
            margin-bottom: 40px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
        .related-card .card-body { padding: 20px 22px 24px; }
        .related-card .card-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .related-card .card-body h3 a { color: var(--accent); }
        .related-card .card-body h3 a:hover { color: var(--primary); }
        .related-card .card-body p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 0; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(245,240,235,0.8);
            padding: 60px 0 30px;
        }
        .site-footer .logo { color: var(--text-white); margin-bottom: 16px; }
        .site-footer .logo i { color: var(--primary-light); }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(245,240,235,0.6); max-width: 320px; }
        .site-footer h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
            font-family: var(--font-sans);
        }
        .site-footer ul li { margin-bottom: 10px; }
        .site-footer ul li a { font-size: 0.9rem; color: rgba(245,240,235,0.6); display: inline-flex; align-items: center; gap: 8px; }
        .site-footer ul li a:hover { color: var(--primary-light); padding-left: 4px; }
        .site-footer ul li a i { color: var(--primary-light); font-size: 0.85rem; width: 18px; }
        .footer-bottom {
            border-top: 1px solid rgba(245,240,235,0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
            color: rgba(245,240,235,0.5);
        }
        .footer-bottom a { color: rgba(245,240,235,0.5); }
        .footer-bottom a:hover { color: var(--primary-light); }
        .footer-social { display: flex; gap: 16px; }
        .footer-social a { font-size: 1.2rem; color: rgba(245,240,235,0.4); transition: var(--transition); }
        .footer-social a:hover { color: var(--primary-light); transform: scale(1.15); }

        /* ===== Mobile Tab Bar ===== */
        .mobile-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
            z-index: 200;
            padding: 6px 0 env(safe-area-inset-bottom, 6px);
            box-shadow: 0 -4px 20px rgba(0,0,0,0.06);
        }
        .mobile-tab-bar .tab-inner { display: flex; justify-content: space-around; align-items: center; max-width: 500px; margin: 0 auto; }
        .mobile-tab-bar a {
            display: flex; flex-direction: column; align-items: center; gap: 2px;
            font-size: 0.65rem; color: var(--text-light); padding: 4px 12px;
            transition: var(--transition);
        }
        .mobile-tab-bar a i { font-size: 1.2rem; }
        .mobile-tab-bar a.active { color: var(--primary); }
        .mobile-tab-bar a:hover { color: var(--primary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .related-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
        }

        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-nav-toggle { display: block; }
            .page-hero { padding: 50px 0 42px; }
            .page-hero h1 { font-size: 1.7rem; }
            .page-hero .meta-info { gap: 14px; font-size: 0.85rem; flex-wrap: wrap; }
            .article-main { padding: 36px 0 60px; }
            .article-content { font-size: 0.98rem; }
            .article-content h2 { font-size: 1.3rem; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .mobile-tab-bar { display: block; }
            body { padding-bottom: 64px; }
            .header-inner { height: 60px; }
            .logo { font-size: 1.25rem; }
        }

        @media (max-width: 520px) {
            .page-hero h1 { font-size: 1.4rem; }
            .container-custom { padding: 0 16px; }
        }

        @media (min-width: 769px) {
            .mobile-tab-bar { display: none !important; }
            body { padding-bottom: 0 !important; }
        }

        /* ===== Mobile Nav Drawer ===== */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: 280px;
            height: 100%;
            background: var(--bg-white);
            box-shadow: -10px 0 40px rgba(0,0,0,0.1);
            z-index: 300;
            padding: 80px 30px 30px;
            transition: right 0.35s ease;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .mobile-drawer.open { right: 0; }
        .mobile-drawer a {
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--text);
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .mobile-drawer a.active { color: var(--primary); }
        .mobile-drawer a.nav-cta {
            background: var(--primary);
            color: #fff;
            text-align: center;
            padding: 12px;
            border-radius: 30px;
            border-bottom: none;
        }
        .mobile-drawer-close {
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 1.6rem;
            background: none;
            border: none;
            color: var(--text);
            cursor: pointer;
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.35);
            z-index: 299;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.35s ease;
        }
        .drawer-overlay.open { opacity: 1; pointer-events: auto; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #8b5a2b;
            --primary-dark: #6b3f1a;
            --primary-light: #c49a6c;
            --secondary: #d4a76a;
            --accent: #e8c88a;
            --bg-light: #faf8f5;
            --bg-cream: #f5f0eb;
            --bg-dark: #2c241b;
            --text-dark: #1f1a15;
            --text-body: #3d3228;
            --text-soft: #7a6b5d;
            --text-light: #b5a89c;
            --border-light: #e5ddd5;
            --border-medium: #d0c4b8;
            --shadow-sm: 0 2px 8px rgba(44, 36, 27, 0.06);
            --shadow-md: 0 8px 28px rgba(44, 36, 27, 0.10);
            --shadow-lg: 0 20px 48px rgba(44, 36, 27, 0.14);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-serif: 'Georgia', 'Times New Roman', serif;
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        /* ===== 容器 ===== */
        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        @media screen and (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-h);
            box-shadow: 0 1px 4px rgba(44, 36, 27, 0.04);
        }

        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            font-family: var(--font-serif);
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--primary);
            font-size: 26px;
        }
        .logo:hover {
            color: var(--primary-dark);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-soft);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: rgba(139, 90, 43, 0.06);
        }
        .main-nav a.active {
            color: var(--primary-dark);
            background: rgba(139, 90, 43, 0.10);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .main-nav a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .main-nav a.nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(139, 90, 43, 0.30);
        }

        .mobile-nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-nav-toggle:hover {
            background: rgba(44, 36, 27, 0.05);
        }
        .mobile-nav-toggle:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== 移动端底部 Tab 导航 ===== */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid var(--border-light);
            box-shadow: 0 -2px 10px rgba(44, 36, 27, 0.06);
            padding: 6px 0 env(safe-area-inset-bottom, 6px) 0;
            display: none;
            justify-content: space-around;
            align-items: center;
        }

        .bottom-tab-nav .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px 4px;
            font-size: 11px;
            color: var(--text-soft);
            transition: var(--transition);
            border-radius: var(--radius-sm);
            min-width: 60px;
            text-decoration: none;
            font-weight: 500;
        }
        .bottom-tab-nav .tab-item i {
            font-size: 20px;
            margin-bottom: 1px;
        }
        .bottom-tab-nav .tab-item:hover {
            color: var(--primary);
            background: rgba(139, 90, 43, 0.05);
        }
        .bottom-tab-nav .tab-item.active {
            color: var(--primary-dark);
            font-weight: 600;
        }
        .bottom-tab-nav .tab-item.active i {
            color: var(--primary);
        }

        /* ===== Hero 区块 ===== */
        .hero-section {
            padding: calc(var(--header-h) + 40px) 0 60px;
            background: var(--bg-cream);
            position: relative;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(250, 248, 245, 0.88) 0%, rgba(245, 240, 235, 0.70) 100%);
            z-index: 1;
        }
        .hero-section .container-custom {
            position: relative;
            z-index: 2;
        }

        .hero-content {
            max-width: 720px;
        }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(139, 90, 43, 0.12);
            color: var(--primary-dark);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-content .hero-badge i {
            font-size: 14px;
        }
        .hero-content h1 {
            font-size: 48px;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.15;
            font-family: var(--font-serif);
            letter-spacing: 0.01em;
            margin-bottom: 16px;
        }
        .hero-content h1 span {
            color: var(--primary);
        }
        .hero-content p {
            font-size: 18px;
            color: var(--text-soft);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 600px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--primary);
            color: #fff;
            padding: 14px 34px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            letter-spacing: 0.02em;
        }
        .btn-primary i {
            font-size: 16px;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(139, 90, 43, 0.30);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(139, 90, 43, 0.20);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--text-dark);
            padding: 14px 34px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            border: 2px solid var(--border-medium);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-outline i {
            font-size: 16px;
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(139, 90, 43, 0.04);
            transform: translateY(-2px);
        }

        /* ===== 通用板块 ===== */
        .section-block {
            padding: 80px 0;
        }
        .section-block.bg-cream {
            background: var(--bg-cream);
        }
        .section-block.bg-white {
            background: #fff;
        }
        .section-block.bg-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-block.bg-dark h2,
        .section-block.bg-dark h3,
        .section-block.bg-dark .section-subtitle {
            color: #fff;
        }
        .section-block.bg-dark .section-subtitle {
            color: var(--accent);
        }

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-header h2 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-dark);
            font-family: var(--font-serif);
            letter-spacing: 0.01em;
            margin-bottom: 12px;
        }
        .section-header .section-subtitle {
            font-size: 17px;
            color: var(--text-soft);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-header .section-line {
            width: 60px;
            height: 3px;
            background: var(--primary-light);
            margin: 16px auto 0;
            border-radius: 2px;
        }
        .section-block.bg-dark .section-header h2 {
            color: #fff;
        }
        .section-block.bg-dark .section-header .section-subtitle {
            color: var(--text-light);
        }
        .section-block.bg-dark .section-header .section-line {
            background: var(--accent);
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card-grid.cols-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid.cols-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .card-item {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }
        .card-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-medium);
        }
        .card-item .card-img {
            width: 100%;
            aspect-ratio: 16 / 11;
            object-fit: cover;
            display: block;
            border-radius: 0;
        }
        .card-item .card-body {
            padding: 24px 22px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-item .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            font-family: var(--font-serif);
        }
        .card-item .card-body .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(139, 90, 43, 0.08);
            padding: 2px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }
        .card-item .card-body p {
            font-size: 15px;
            color: var(--text-soft);
            line-height: 1.7;
            flex: 1;
        }
        .card-item .card-body .card-link {
            margin-top: 16px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
        }
        .card-item .card-body .card-link i {
            font-size: 12px;
            transition: var(--transition);
        }
        .card-item .card-body .card-link:hover i {
            transform: translateX(4px);
        }
        .card-item.bg-dark-card {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.10);
        }
        .card-item.bg-dark-card .card-body h3 {
            color: #fff;
        }
        .card-item.bg-dark-card .card-body p {
            color: var(--text-light);
        }
        .card-item.bg-dark-card .card-body .card-tag {
            background: rgba(212, 167, 106, 0.18);
            color: var(--accent);
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 32px 18px;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .step-item .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            margin: 0 auto 16px;
            font-family: var(--font-serif);
        }
        .step-item h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-soft);
            line-height: 1.7;
        }
        .step-item .step-arrow {
            position: absolute;
            right: -16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--primary-light);
            font-size: 20px;
            opacity: 0.5;
        }
        .steps-grid .step-item:last-child .step-arrow {
            display: none;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 32px 16px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .stat-item .stat-number {
            font-size: 42px;
            font-weight: 800;
            color: #fff;
            font-family: var(--font-serif);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .stat-number span {
            color: var(--accent);
        }
        .stat-item .stat-label {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-medium);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--text-soft);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item summary:hover {
            background: rgba(139, 90, 43, 0.03);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-soft);
            line-height: 1.8;
        }
        .faq-item .faq-answer p {
            margin-bottom: 8px;
        }
        .faq-item .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            background: var(--primary);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10;
            z-index: 0;
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            font-family: var(--font-serif);
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-section .btn-cta-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary-dark);
            padding: 16px 40px;
            border-radius: var(--radius-sm);
            font-size: 17px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            letter-spacing: 0.02em;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.10);
        }
        .cta-section .btn-cta-light i {
            font-size: 18px;
        }
        .cta-section .btn-cta-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
            background: #faf8f5;
        }
        .cta-section .btn-cta-light:active {
            transform: translateY(0);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 64px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
            font-size: 24px;
        }
        .footer-brand .logo i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-light);
            max-width: 340px;
        }
        .site-footer h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            font-family: var(--font-serif);
            letter-spacing: 0.02em;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul li a {
            color: var(--text-light);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .site-footer ul li a i {
            width: 16px;
            color: var(--accent);
            font-size: 14px;
        }
        .site-footer ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
        }
        .footer-bottom a {
            color: var(--text-light);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-light);
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media screen and (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero-content h1 {
                font-size: 38px;
            }
            .step-item .step-arrow {
                display: none;
            }
        }

        @media screen and (max-width: 768px) {
            :root {
                --header-h: 64px;
            }
            .site-header {
                height: var(--header-h);
            }
            .header-inner {
                padding: 0 16px;
            }
            .main-nav.desktop-nav {
                display: none;
            }
            .mobile-nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .main-nav.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                padding: 16px 20px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                gap: 4px;
            }
            .main-nav.mobile-open a {
                padding: 12px 16px;
                font-size: 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .main-nav.mobile-open a.active::after {
                display: none;
            }
            .main-nav.mobile-open a.nav-cta {
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }

            .bottom-tab-nav {
                display: flex !important;
            }
            body {
                padding-bottom: 64px;
            }

            .hero-section {
                padding: calc(var(--header-h) + 24px) 0 40px;
                min-height: auto;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .hero-content p {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                justify-content: center;
                text-align: center;
            }

            .section-block {
                padding: 52px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .section-header .section-subtitle {
                font-size: 15px;
            }

            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .card-grid.cols-2,
            .card-grid.cols-4 {
                grid-template-columns: 1fr;
            }
            .card-item .card-img {
                aspect-ratio: 16 / 10;
            }
            .card-item .card-body {
                padding: 18px 16px 20px;
            }
            .card-item .card-body h3 {
                font-size: 18px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .step-item {
                padding: 24px 16px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .stat-number {
                font-size: 32px;
            }

            .faq-item summary {
                padding: 14px 18px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
                font-size: 14px;
            }

            .cta-section {
                padding: 52px 0;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 16px;
            }
            .cta-section .btn-cta-light {
                padding: 14px 28px;
                font-size: 15px;
                width: 100%;
                justify-content: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-social {
                justify-content: center;
            }
        }

        @media screen and (max-width: 520px) {
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-content p {
                font-size: 15px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .btn-primary,
            .btn-outline {
                padding: 12px 24px;
                font-size: 15px;
            }
            .stat-item .stat-number {
                font-size: 28px;
            }
            .bottom-tab-nav .tab-item {
                font-size: 10px;
                padding: 4px 8px 2px;
                min-width: 48px;
            }
            .bottom-tab-nav .tab-item i {
                font-size: 18px;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 12px;
        }
        .mt-2 {
            margin-top: 24px;
        }
        .mb-1 {
            margin-bottom: 12px;
        }
        .mb-2 {
            margin-bottom: 24px;
        }
        .gap-1 {
            gap: 12px;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
        }
        .align-center {
            align-items: center;
        }
        .justify-center {
            justify-content: center;
        }

        /* Foundation 覆盖 */
        .grid-container {
            max-width: var(--max-width);
            padding-left: 24px;
            padding-right: 24px;
        }
        @media screen and (max-width: 768px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }