/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --accent: #e94560;
            --accent-hover: #d63850;
            --accent-soft: rgba(233, 69, 96, 0.08);
            --gold: #f5c518;
            --gold-light: #fff8e0;
            --bg: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f0f1a;
            --text: #1a1a2e;
            --text-light: #5a5a7a;
            --text-white: #ffffff;
            --text-muted: #8a8aaa;
            --border: #e8e8f0;
            --border-light: #f0f0f6;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.10);
            --shadow-dock: 0 4px 24px rgba(0, 0, 0, 0.08);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container: 1200px;
            --nav-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container--narrow {
            max-width: 900px;
        }
        .container--wide {
            max-width: 1360px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section--dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section--dark h2,
        .section--dark h3,
        .section--dark .section__sub {
            color: var(--text-white);
        }
        .section--accent {
            background: var(--accent-soft);
        }
        .section__header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section__title {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .section__title i {
            color: var(--accent);
            margin-right: 8px;
        }
        .section__sub {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section--dark .section__sub {
            color: rgba(255, 255, 255, 0.7);
        }
        .section__divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 16px auto 0;
        }

        /* ===== 浮动 Dock 导航 ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1000;
            display: flex;
            justify-content: center;
            pointer-events: none;
            padding: 0 20px;
        }
        .site-header .dock {
            pointer-events: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 980px;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(20px) saturate(1.4);
            -webkit-backdrop-filter: blur(20px) saturate(1.4);
            border-radius: 60px;
            padding: 0 28px 0 32px;
            height: 60px;
            box-shadow: var(--shadow-dock);
            border: 1px solid rgba(255, 255, 255, 0.5);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .site-header .dock:hover {
            box-shadow: 0 8px 36px rgba(0, 0, 0, 0.10);
            transform: translateY(-1px);
        }
        .site-header .logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.03em;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-header .logo i {
            color: var(--accent);
            font-size: 1.2rem;
        }
        .site-header .logo span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-header .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .site-header .nav-list a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            transition: background var(--transition), color var(--transition);
            position: relative;
        }
        .site-header .nav-list a:hover {
            background: var(--accent-soft);
            color: var(--accent);
        }
        .site-header .nav-list a.active {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(233, 69, 96, 0.30);
        }
        .site-header .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .site-header .nav-cta .btn-dock {
            padding: 8px 22px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            transition: background var(--transition), transform var(--transition);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .site-header .nav-cta .btn-dock:hover {
            background: var(--accent);
            transform: scale(1.02);
        }
        .site-header .nav-toggle {
            display: none;
            background: none;
            font-size: 1.4rem;
            color: var(--text);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 30px;
            transition: background var(--transition);
        }
        .site-header .nav-toggle:hover {
            background: var(--accent-soft);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 768px) {
            .site-header {
                top: 12px;
                padding: 0 12px;
            }
            .site-header .dock {
                padding: 0 16px 0 20px;
                height: 54px;
                border-radius: 40px;
            }
            .site-header .logo {
                font-size: 1.1rem;
            }
            .site-header .nav-list {
                position: fixed;
                top: 72px;
                left: 12px;
                right: 12px;
                background: rgba(255, 255, 255, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: 24px;
                padding: 16px;
                flex-direction: column;
                gap: 4px;
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
                border: 1px solid var(--border);
                display: none;
                opacity: 0;
                transform: translateY(-8px);
                transition: opacity 0.3s, transform 0.3s;
            }
            .site-header .nav-list.open {
                display: flex;
                opacity: 1;
                transform: translateY(0);
            }
            .site-header .nav-list a {
                padding: 12px 16px;
                border-radius: 12px;
                font-size: 1rem;
                width: 100%;
            }
            .site-header .nav-list a.active {
                background: var(--accent);
                color: #fff;
            }
            .site-header .nav-cta .btn-dock {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .site-header .nav-cta .btn-dock span {
                display: none;
            }
            .site-header .nav-toggle {
                display: block;
            }
        }
        @media (max-width: 480px) {
            .site-header .dock {
                padding: 0 12px 0 16px;
                height: 50px;
                border-radius: 32px;
            }
            .site-header .logo {
                font-size: 1rem;
            }
            .site-header .logo i {
                font-size: 1rem;
            }
            .site-header .nav-cta .btn-dock {
                padding: 5px 12px;
                font-size: 0.75rem;
            }
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background: linear-gradient(135deg, rgba(15, 15, 26, 0.85), rgba(22, 33, 62, 0.80)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 160px;
            background: linear-gradient(to top, var(--bg), transparent);
            pointer-events: none;
        }
        .hero__content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }
        .hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.18);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 28px;
            letter-spacing: 0.3px;
        }
        .hero__badge i {
            color: var(--gold);
        }
        .hero__title {
            font-size: 3.6rem;
            font-weight: 900;
            letter-spacing: -0.03em;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(to right, #ffffff, #f0c0c8, #ffffff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero__desc {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero__actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero__actions .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 60px;
            font-size: 1.05rem;
            font-weight: 700;
            background: var(--accent);
            color: #fff;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 8px 32px rgba(233, 69, 96, 0.35);
        }
        .hero__actions .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(233, 69, 96, 0.45);
        }
        .hero__actions .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 60px;
            font-size: 1.05rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.10);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.20);
            color: #fff;
            transition: background var(--transition), transform var(--transition);
        }
        .hero__actions .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.20);
            transform: translateY(-2px);
        }
        .hero__stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            margin-top: 52px;
            flex-wrap: wrap;
        }
        .hero__stats .stat-item {
            text-align: center;
        }
        .hero__stats .stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            display: block;
        }
        .hero__stats .stat-item .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 2px;
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 90vh;
                padding: 100px 20px 60px;
            }
            .hero__title {
                font-size: 2.4rem;
            }
            .hero__desc {
                font-size: 1rem;
            }
            .hero__actions .btn-primary,
            .hero__actions .btn-secondary {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
            .hero__stats {
                gap: 28px;
                margin-top: 36px;
            }
            .hero__stats .stat-item .num {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 480px) {
            .hero__title {
                font-size: 1.9rem;
            }
            .hero__badge {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
            .hero__actions {
                flex-direction: column;
                width: 100%;
            }
            .hero__actions .btn-primary,
            .hero__actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .hero__stats {
                gap: 20px;
            }
            .hero__stats .stat-item .num {
                font-size: 1.4rem;
            }
        }

        /* ===== 特色卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card__icon {
            width: 64px;
            height: 64px;
            border-radius: 20px;
            background: var(--accent-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: var(--accent);
            transition: background var(--transition), transform var(--transition);
        }
        .feature-card:hover .feature-card__icon {
            background: var(--accent);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
        }

        @media (max-width: 900px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .feature-card {
                padding: 28px 20px 24px;
            }
        }

        /* ===== 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg-card);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .category-card__img {
            height: 200px;
            background: var(--primary-light);
            position: relative;
            overflow: hidden;
        }
        .category-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .category-card:hover .category-card__img img {
            transform: scale(1.05);
        }
        .category-card__img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.5), transparent);
        }
        .category-card__body {
            padding: 24px 24px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card__body .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--accent-soft);
            color: var(--accent);
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .category-card__body h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .category-card__body p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
        }
        .category-card__body .card-link {
            margin-top: 16px;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
        }
        .category-card__body .card-link i {
            transition: transform var(--transition);
        }
        .category-card__body .card-link:hover i {
            transform: translateX(4px);
        }

        @media (max-width: 768px) {
            .category-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-card__img {
                height: 170px;
            }
        }

        /* ===== 资讯列表（CMS） ===== */
        .post-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .post-card {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 24px 24px 22px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
        }
        .post-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .post-card .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .post-card .meta .cat {
            padding: 2px 12px;
            border-radius: 30px;
            background: var(--accent-soft);
            color: var(--accent);
            font-weight: 600;
            font-size: 0.7rem;
        }
        .post-card .meta .date {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .post-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .post-card h3 a {
            color: var(--text);
            transition: color var(--transition);
        }
        .post-card h3 a:hover {
            color: var(--accent);
        }
        .post-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
        }
        .post-card .read-more {
            margin-top: 14px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .post-card .read-more i {
            transition: transform var(--transition);
        }
        .post-card .read-more:hover i {
            transform: translateX(4px);
        }
        .post-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
            font-size: 1rem;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .post-empty i {
            font-size: 2.4rem;
            color: var(--border);
            margin-bottom: 12px;
            display: block;
        }

        @media (max-width: 768px) {
            .post-list {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .post-card {
                padding: 18px 18px 20px;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            text-align: center;
            position: relative;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 16px rgba(233, 69, 96, 0.30);
        }
        .step-item__icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 14px;
            margin-top: 4px;
        }
        .step-item h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        @media (max-width: 900px) {
            .steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px 20px;
            }
        }
        @media (max-width: 520px) {
            .steps {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .step-item {
                padding: 26px 18px 22px;
            }
        }

        /* ===== 功能亮点（图文） ===== */
        .showcase {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .showcase__image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            background: var(--primary-light);
        }
        .showcase__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 300px;
        }
        .showcase__text h3 {
            font-size: 1.6rem;
            margin-bottom: 16px;
        }
        .showcase__text p {
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 16px;
            font-size: 0.98rem;
        }
        .showcase__text .feature-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 20px;
        }
        .showcase__text .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.95rem;
            color: var(--text);
        }
        .showcase__text .feature-list li i {
            color: var(--accent);
            margin-top: 3px;
            min-width: 18px;
        }

        @media (max-width: 900px) {
            .showcase {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .showcase__image {
                order: -1;
            }
            .showcase__image img {
                min-height: 220px;
            }
            .showcase__text h3 {
                font-size: 1.3rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-item__question {
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            transition: background var(--transition);
            color: var(--text);
        }
        .faq-item__question:hover {
            background: var(--accent-soft);
        }
        .faq-item__question i {
            color: var(--accent);
            transition: transform var(--transition);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .faq-item.active .faq-item__question i {
            transform: rotate(180deg);
        }
        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-item__answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        @media (max-width: 520px) {
            .faq-item__question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-item__answer {
                padding: 0 16px;
                font-size: 0.88rem;
            }
            .faq-item.active .faq-item__answer {
                padding: 0 16px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: 2rem;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-box p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 28px;
            position: relative;
        }
        .cta-box .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 44px;
            border-radius: 60px;
            font-size: 1.1rem;
            font-weight: 700;
            background: var(--accent);
            color: #fff;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 8px 32px rgba(233, 69, 96, 0.35);
            position: relative;
        }
        .cta-box .btn-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 12px 44px rgba(233, 69, 96, 0.45);
        }

        @media (max-width: 768px) {
            .cta-box {
                padding: 40px 24px;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .cta-box p {
                font-size: 0.95rem;
            }
            .cta-box .btn-cta {
                padding: 14px 32px;
                font-size: 1rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 28px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand .logo {
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand .logo i {
            color: var(--accent);
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer ul li {
            margin-bottom: 8px;
        }
        .site-footer ul a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .site-footer ul a:hover {
            color: var(--accent);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent);
        }
        .site-footer .footer-bottom .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);
            transition: background var(--transition), color var(--transition);
            font-size: 1rem;
            margin-left: 6px;
        }
        .site-footer .footer-bottom .social a:hover {
            background: var(--accent);
            color: #fff;
        }

        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 480px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 通用按钮 & 标签 ===== */
        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--accent-soft);
            color: var(--accent);
        }
        .tag--gold {
            background: var(--gold-light);
            color: #b8860b;
        }
        .tag--dark {
            background: rgba(0, 0, 0, 0.06);
            color: var(--text-light);
        }

        /* ===== 响应式辅助 ===== */
        @media (max-width: 768px) {
            .section {
                padding: 50px 0;
            }
            .section__title {
                font-size: 1.6rem;
            }
            .section__sub {
                font-size: 0.95rem;
            }
            .section__header {
                margin-bottom: 32px;
            }
        }
        @media (max-width: 480px) {
            .section {
                padding: 36px 0;
            }
            .section__title {
                font-size: 1.3rem;
            }
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeUp 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;
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg);
        }
        ::-webkit-scrollbar-thumb {
            background: #c0c0d0;
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #a0a0b8;
        }

        /* ===== 选中颜色 ===== */
        ::selection {
            background: var(--accent);
            color: #fff;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
:root {
    --primary: #1a2a6c;
    --primary-light: #2d4a8e;
    --primary-dark: #0f1a3e;
    --accent: #f6b93b;
    --accent-light: #f8d06b;
    --accent-dark: #d49a1c;
    --bg-body: #f4f6fb;
    --bg-white: #ffffff;
    --bg-card: #ffffff;
    --bg-dark: #0f1a3e;
    --bg-section-alt: #eef1f7;
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-light: #8888aa;
    --text-white: #ffffff;
    --border: #e0e4ed;
    --border-light: #eef1f7;
    --radius: 14px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow: 0 8px 30px rgba(26, 42, 108, 0.08);
    --shadow-lg: 0 20px 50px rgba(26, 42, 108, 0.12);
    --shadow-hover: 0 16px 40px rgba(26, 42, 108, 0.15);
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --container: 1200px;
    --header-height: 76px;
}

/* ===== Reset & Base ===== */
*, *::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);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-top: var(--header-height);
}
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
h1 { font-size: 2.4rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.15rem; }
p { margin-bottom: 1rem; color: var(--text-secondary); }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ===== Header / Dock Navigation ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(255,255,255,0.72);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255,255,255,0.3);
    box-shadow: 0 2px 20px rgba(26,42,108,0.06);
}
.dock {
    max-width: 1180px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    gap: 16px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.3px;
    white-space: nowrap;
}
.logo i { color: var(--accent); font-size: 1.5rem; }
.logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-list { display: flex; align-items: center; gap: 6px; }
.nav-list a {
    padding: 8px 18px;
    border-radius: 40px;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition);
    white-space: nowrap;
    position: relative;
}
.nav-list a:hover { color: var(--primary); background: rgba(26,42,108,0.06); }
.nav-list a.active { color: var(--text-white); background: var(--primary); box-shadow: 0 4px 12px rgba(26,42,108,0.2); }
.nav-list a.active:hover { color: var(--text-white); background: var(--primary-light); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.btn-dock {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 22px;
    border-radius: 40px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.92rem;
    box-shadow: 0 4px 14px rgba(246,185,59,0.3);
    transition: all var(--transition);
    white-space: nowrap;
}
.btn-dock:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(246,185,59,0.4); color: var(--text-primary); }
.btn-dock i { font-size: 1rem; }
.nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--primary); cursor: pointer; padding: 4px 8px; border-radius: 8px; transition: background var(--transition); }
.nav-toggle:hover { background: rgba(26,42,108,0.06); }

/* ===== Article Banner ===== */
.article-banner {
    position: relative;
    padding: 60px 0 50px;
    background: var(--bg-dark);
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    background-blend-mode: overlay;
    margin-top: 0;
}
.article-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15,26,62,0.88), rgba(26,42,108,0.78));
    z-index: 1;
}
.article-banner .container { position: relative; z-index: 2; text-align: center; }
.article-banner h1 {
    color: var(--text-white);
    font-size: 2.4rem;
    max-width: 860px;
    margin: 0 auto 16px;
    line-height: 1.35;
    text-shadow: 0 2px 10px rgba(0,0,0,0.15);
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 28px;
    color: rgba(255,255,255,0.8);
    font-size: 0.95rem;
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta i { color: var(--accent); }
.article-meta .category {
    background: var(--accent);
    color: var(--text-primary);
    padding: 2px 14px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.85rem;
}

/* ===== Article Content ===== */
.article-main {
    padding: 50px 0 60px;
    background: var(--bg-body);
}
.article-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 40px;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}
.article-body {
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px 44px;
}
.article-body .content {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--text-secondary);
}
.article-body .content h2,
.article-body .content h3,
.article-body .content h4 { margin-top: 1.8em; margin-bottom: 0.6em; color: var(--text-primary); }
.article-body .content p { margin-bottom: 1.2em; }
.article-body .content ul,
.article-body .content ol { margin-bottom: 1.2em; padding-left: 1.5em; list-style: disc; }
.article-body .content ol { list-style: decimal; }
.article-body .content li { margin-bottom: 0.4em; color: var(--text-secondary); }
.article-body .content a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
.article-body .content a:hover { color: var(--accent-dark); }
.article-body .content img { border-radius: var(--radius-sm); margin: 1.5em 0; box-shadow: var(--shadow); }
.article-body .content blockquote {
    border-left: 4px solid var(--accent);
    background: var(--bg-section-alt);
    padding: 16px 24px;
    margin: 1.5em 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary);
    font-style: italic;
}
.article-body .content code {
    background: var(--bg-section-alt);
    padding: 2px 10px;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--primary);
}
.article-body .content pre {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: 20px 24px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin: 1.5em 0;
    font-size: 0.92rem;
    line-height: 1.6;
}
.article-body .content pre code { background: none; color: inherit; padding: 0; }
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}
.article-tags .tag {
    background: var(--bg-section-alt);
    color: var(--text-secondary);
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition);
}
.article-tags .tag:hover { background: var(--primary); color: var(--text-white); }
.article-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    gap: 20px;
}
.article-nav a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    color: var(--primary);
    padding: 8px 0;
    transition: color var(--transition);
}
.article-nav a:hover { color: var(--accent-dark); }
.article-nav .prev i { margin-right: 4px; }
.article-nav .next i { margin-left: 4px; }

/* ===== Sidebar ===== */
.article-sidebar { display: flex; flex-direction: column; gap: 28px; }
.sidebar-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 28px 24px;
}
.sidebar-card h3 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.sidebar-card h3 i { color: var(--accent); }
.sidebar-list { display: flex; flex-direction: column; gap: 12px; }
.sidebar-list li { border-bottom: 1px solid var(--border-light); padding-bottom: 12px; }
.sidebar-list li:last-child { border-bottom: none; padding-bottom: 0; }
.sidebar-list a {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    color: var(--text-secondary);
    transition: color var(--transition);
    font-size: 0.92rem;
    line-height: 1.5;
}
.sidebar-list a:hover { color: var(--primary); }
.sidebar-list a .num {
    min-width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--bg-section-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary);
    flex-shrink: 0;
}
.sidebar-list a:hover .num { background: var(--primary); color: var(--text-white); }
.sidebar-cta {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--text-white);
    text-align: center;
    padding: 32px 24px;
}
.sidebar-cta h3 { color: var(--text-white); margin-bottom: 8px; }
.sidebar-cta p { color: rgba(255,255,255,0.85); font-size: 0.92rem; margin-bottom: 18px; }
.sidebar-cta .btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: var(--text-primary);
    padding: 10px 28px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition);
    box-shadow: 0 4px 14px rgba(246,185,59,0.3);
}
.sidebar-cta .btn-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(246,185,59,0.4); color: var(--text-primary); }

/* ===== Not Found ===== */
.not-found-block {
    text-align: center;
    padding: 80px 24px;
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    max-width: 600px;
    margin: 40px auto;
}
.not-found-block i { font-size: 3.5rem; color: var(--accent); margin-bottom: 20px; display: block; }
.not-found-block h2 { font-size: 1.8rem; margin-bottom: 12px; }
.not-found-block p { color: var(--text-light); margin-bottom: 24px; }
.not-found-block .btn-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 32px;
    border-radius: 40px;
    background: var(--primary);
    color: var(--text-white);
    font-weight: 600;
    transition: all var(--transition);
}
.not-found-block .btn-back:hover { background: var(--primary-light); transform: translateY(-2px); color: var(--text-white); }

/* ===== FAQ Section ===== */
.faq-section {
    padding: 60px 0 70px;
    background: var(--bg-section-alt);
}
.faq-section .container { max-width: 860px; }
.faq-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 8px;
}
.faq-section .subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 40px;
    font-size: 1.05rem;
}
.faq-item {
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 14px;
    overflow: hidden;
    transition: box-shadow var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow-hover); }
.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
    transition: background var(--transition);
    gap: 12px;
}
.faq-question:hover { background: rgba(26,42,108,0.02); }
.faq-question i { color: var(--accent); font-size: 1.1rem; transition: transform var(--transition); flex-shrink: 0; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 24px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}
.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 24px 20px;
}

/* ===== CTA Section ===== */
.cta-section {
    padding: 60px 0 70px;
    background: var(--bg-dark);
    background-image: url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
    background-blend-mode: overlay;
    position: relative;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15,26,62,0.9), rgba(26,42,108,0.82));
    z-index: 1;
}
.cta-section .container { position: relative; z-index: 2; text-align: center; }
.cta-section h2 { color: var(--text-white); font-size: 2rem; margin-bottom: 12px; }
.cta-section p { color: rgba(255,255,255,0.85); font-size: 1.05rem; max-width: 600px; margin: 0 auto 28px; }
.cta-section .btn-group { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
.cta-section .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    border-radius: 40px;
    background: var(--accent);
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.05rem;
    box-shadow: 0 4px 20px rgba(246,185,59,0.35);
    transition: all var(--transition);
}
.cta-section .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 32px rgba(246,185,59,0.45); color: var(--text-primary); }
.cta-section .btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    border-radius: 40px;
    border: 2px solid rgba(255,255,255,0.5);
    color: var(--text-white);
    font-weight: 600;
    font-size: 1.05rem;
    transition: all var(--transition);
}
.cta-section .btn-outline:hover { background: rgba(255,255,255,0.12); border-color: var(--text-white); color: var(--text-white); transform: translateY(-3px); }

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.8);
    padding: 56px 0 0;
    font-size: 0.92rem;
}
.site-footer .container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 36px;
}
.footer-brand .logo { color: var(--text-white); font-size: 1.25rem; margin-bottom: 12px; }
.footer-brand .logo i { color: var(--accent); }
.footer-brand .logo span { -webkit-text-fill-color: var(--text-white); background: none; }
.footer-brand p { color: rgba(255,255,255,0.6); line-height: 1.7; font-size: 0.92rem; }
.site-footer h4 { color: var(--text-white); font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
.site-footer ul li { margin-bottom: 10px; }
.site-footer ul a { color: rgba(255,255,255,0.6); transition: color var(--transition); }
.site-footer ul a:hover { color: var(--accent); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem;
}
.footer-bottom a { color: rgba(255,255,255,0.6); }
.footer-bottom a:hover { color: var(--accent); }
.social { display: flex; gap: 12px; }
.social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.6);
    transition: all var(--transition);
    font-size: 1rem;
}
.social a:hover { background: var(--accent); color: var(--text-primary); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .article-banner h1 { font-size: 2rem; }
}
@media (max-width: 768px) {
    .nav-list { display: none; }
    .nav-list.open { display: flex; flex-direction: column; position: absolute; top: var(--header-height); left: 0; right: 0; background: rgba(255,255,255,0.96); backdrop-filter: blur(18px); padding: 16px 24px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow); gap: 4px; }
    .nav-list.open a { width: 100%; padding: 12px 18px; border-radius: 10px; }
    .nav-toggle { display: block; }
    .btn-dock span { display: none; }
    .btn-dock { padding: 9px 14px; }
    .article-banner { padding: 40px 0 36px; }
    .article-banner h1 { font-size: 1.6rem; }
    .article-body { padding: 28px 20px; }
    .article-sidebar { grid-template-columns: 1fr; }
    .article-meta { font-size: 0.85rem; gap: 10px 16px; }
    .article-nav { flex-direction: column; align-items: center; text-align: center; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .faq-section h2 { font-size: 1.6rem; }
    .cta-section h2 { font-size: 1.6rem; }
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.5rem; }
}
@media (max-width: 520px) {
    .dock { padding: 0 16px; }
    .article-banner h1 { font-size: 1.35rem; }
    .article-body { padding: 20px 16px; }
    .article-body .content { font-size: 0.98rem; }
    .sidebar-card { padding: 20px 16px; }
    .cta-section .btn-primary, .cta-section .btn-outline { padding: 12px 24px; font-size: 0.95rem; width: 100%; justify-content: center; }
    .btn-group { flex-direction: column; align-items: stretch; }
    .container { padding: 0 16px; }
    .not-found-block { padding: 40px 16px; }
    .not-found-block i { font-size: 2.5rem; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a237e;
            --primary-light: #3f51b5;
            --primary-dark: #0d1542;
            --accent: #ff6f00;
            --accent-light: #ffa040;
            --accent-dark: #c43e00;
            --bg: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0d1542;
            --bg-soft: #eef0f7;
            --text: #1a1a2e;
            --text-light: #5a5a7a;
            --text-white: #f0f0f5;
            --border: #e0e3ed;
            --radius: 20px;
            --radius-sm: 12px;
            --radius-xs: 8px;
            --shadow: 0 8px 32px rgba(26, 35, 126, 0.08);
            --shadow-hover: 0 16px 48px rgba(26, 35, 126, 0.16);
            --shadow-dock: 0 4px 20px rgba(26, 35, 126, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--header-h);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        ul {
            list-style: none;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            outline: none;
            border: none;
        }
        button {
            cursor: pointer;
            background: none;
        }

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

        /* ===== 浮动 Dock 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 8px 24px;
            background: transparent;
            pointer-events: none;
        }
        .site-header .dock {
            pointer-events: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 820px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: 60px;
            padding: 6px 20px 6px 24px;
            box-shadow: var(--shadow-dock);
            border: 1px solid rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }
        .site-header .dock:hover {
            box-shadow: 0 6px 28px rgba(26, 35, 126, 0.14);
        }
        .site-header .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .site-header .logo i {
            font-size: 1.4rem;
            color: var(--accent);
        }
        .site-header .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-list a:hover {
            color: var(--primary);
            background: var(--bg-soft);
        }
        .nav-list a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(26, 35, 126, 0.25);
        }
        .nav-list a.active:hover {
            background: var(--primary-light);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn-dock {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 40px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            border: none;
            box-shadow: 0 4px 16px rgba(255, 111, 0, 0.3);
        }
        .btn-dock i {
            font-size: 1rem;
        }
        .btn-dock:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 111, 0, 0.4);
            color: #fff;
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
        }
        .nav-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--primary);
            padding: 6px 10px;
            border-radius: 40px;
            background: var(--bg-soft);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--border);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 768px) {
            .site-header {
                padding: 6px 16px;
            }
            .site-header .dock {
                padding: 6px 14px 6px 18px;
                border-radius: 40px;
            }
            .site-header .logo span {
                font-size: 1.1rem;
            }
            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 16px;
                right: 16px;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                border-radius: var(--radius);
                box-shadow: 0 12px 40px rgba(26, 35, 126, 0.15);
                padding: 16px;
                flex-direction: column;
                gap: 6px;
                opacity: 0;
                visibility: hidden;
                transform: translateY(-12px);
                transition: var(--transition);
                border: 1px solid var(--border);
                z-index: 999;
            }
            .nav-list.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }
            .nav-list a {
                width: 100%;
                text-align: center;
                padding: 12px 16px;
                font-size: 1.05rem;
            }
            .nav-cta .btn-dock span {
                display: none;
            }
            .nav-cta .btn-dock {
                padding: 10px 14px;
            }
            .nav-toggle {
                display: inline-flex;
            }
        }
        @media (max-width: 520px) {
            .site-header .dock {
                padding: 4px 12px 4px 14px;
                border-radius: 32px;
            }
            .site-header .logo i {
                font-size: 1.2rem;
            }
            .site-header .logo span {
                font-size: 1rem;
            }
            .nav-list a {
                font-size: 0.95rem;
                padding: 10px 14px;
            }
            .btn-dock {
                padding: 8px 12px;
                font-size: 0.85rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .section-sub {
            font-size: 1.15rem;
            color: var(--text-light);
            max-width: 680px;
            line-height: 1.7;
        }
        .section-head {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-head .section-sub {
            margin: 0 auto;
        }
        .text-center {
            text-align: center;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: 0 6px 24px rgba(26, 35, 126, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(26, 35, 126, 0.35);
            color: #fff;
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            box-shadow: 0 6px 24px rgba(255, 111, 0, 0.3);
        }
        .btn-accent:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(255, 111, 0, 0.4);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 10px 22px;
            font-size: 0.9rem;
        }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--bg-soft);
            color: var(--primary-light);
            letter-spacing: 0.3px;
        }
        .badge-accent {
            background: rgba(255, 111, 0, 0.12);
            color: var(--accent-dark);
        }
        .badge-primary {
            background: rgba(26, 35, 126, 0.10);
            color: var(--primary);
        }
        .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--bg);
            color: var(--text-light);
            border: 1px solid var(--border);
        }

        /* ===== Hero / 首屏 ===== */
        .hero-cat {
            position: relative;
            padding: 100px 0 80px;
            background: var(--primary-dark);
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }
        .hero-cat::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.20;
            z-index: 0;
        }
        .hero-cat::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 21, 66, 0.88) 0%, rgba(26, 35, 126, 0.60) 100%);
            z-index: 1;
        }
        .hero-cat .container {
            position: relative;
            z-index: 2;
            color: var(--text-white);
            text-align: center;
        }
        .hero-cat h1 {
            font-size: 3.2rem;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.15;
            margin-bottom: 20px;
        }
        .hero-cat h1 i {
            color: var(--accent-light);
            margin-right: 8px;
        }
        .hero-cat p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .hero-cat .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        @media (max-width: 768px) {
            .hero-cat {
                padding: 80px 0 60px;
                min-height: 320px;
            }
            .hero-cat h1 {
                font-size: 2.2rem;
            }
            .hero-cat p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .hero-cat h1 {
                font-size: 1.8rem;
            }
            .hero-cat .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid rgba(224, 227, 237, 0.4);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
            transition: var(--transition);
        }
        .card:hover .card-img {
            transform: scale(1.03);
        }
        .card-body {
            padding: 24px 26px 28px;
        }
        .card-body .badge {
            margin-bottom: 12px;
        }
        .card-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .card-body p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-light);
            border-top: 1px solid var(--border);
            padding-top: 16px;
            margin-top: 4px;
        }
        .card-body .card-meta i {
            width: 16px;
            color: var(--primary-light);
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            color: var(--primary-light);
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .card-link i {
            font-size: 0.8rem;
            transition: var(--transition);
        }
        .card-link:hover {
            color: var(--primary);
        }
        .card-link:hover i {
            transform: translateX(4px);
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .card-body {
                padding: 20px 22px 24px;
            }
        }

        /* ===== 图文区块 ===== */
        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .split-block .visual {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .split-block .visual img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            display: block;
        }
        .split-block .content h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .split-block .content p {
            color: var(--text-light);
            font-size: 1.05rem;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .split-block .content .feature-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .split-block .content .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 1rem;
            color: var(--text);
        }
        .split-block .content .feature-list li i {
            color: var(--accent);
            font-size: 1.1rem;
            margin-top: 2px;
            flex-shrink: 0;
        }
        @media (max-width: 900px) {
            .split-block {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .split-block .visual img {
                height: 260px;
            }
            .split-block .content h2 {
                font-size: 1.7rem;
            }
        }
        @media (max-width: 520px) {
            .split-block .visual img {
                height: 200px;
            }
            .split-block .content h2 {
                font-size: 1.4rem;
            }
        }

        /* ===== 数据 / 统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid rgba(224, 227, 237, 0.3);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-card .number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            letter-spacing: -1px;
        }
        .stat-card .label {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-top: 8px;
        }
        .stat-card i {
            font-size: 2rem;
            color: var(--accent-light);
            margin-bottom: 12px;
            display: block;
        }
        @media (max-width: 900px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-card {
                padding: 24px 16px;
            }
            .stat-card .number {
                font-size: 2rem;
            }
        }

        /* ===== 时间轴 / 流程 ===== */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px 0 10px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 30px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(to bottom, var(--primary-light), var(--accent-light));
            border-radius: 6px;
        }
        .tl-item {
            display: flex;
            gap: 28px;
            margin-bottom: 40px;
            position: relative;
            align-items: flex-start;
        }
        .tl-item .tl-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--bg-card);
            box-shadow: 0 4px 20px rgba(26, 35, 126, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            flex-shrink: 0;
            z-index: 1;
            border: 3px solid var(--bg);
        }
        .tl-item .tl-content {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            flex: 1;
            border: 1px solid rgba(224, 227, 237, 0.3);
        }
        .tl-item .tl-content h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .tl-item .tl-content p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        @media (max-width: 640px) {
            .timeline::before {
                left: 20px;
            }
            .tl-item {
                gap: 16px;
            }
            .tl-item .tl-icon {
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
            }
            .tl-item .tl-content {
                padding: 16px 18px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            border: 1px solid rgba(224, 227, 237, 0.3);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-q {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: var(--transition);
            user-select: none;
        }
        .faq-q i {
            color: var(--accent);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-q.open i {
            transform: rotate(180deg);
        }
        .faq-a {
            padding: 0 24px 20px;
            color: var(--text-light);
            line-height: 1.7;
            font-size: 0.95rem;
            display: none;
        }
        .faq-a.open {
            display: block;
        }
        @media (max-width: 640px) {
            .faq-q {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-a {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-dark);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
            text-align: center;
        }
        .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 {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.15rem;
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-section .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 60px 0;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
            .cta-section .cta-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 32px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .site-footer .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .logo i {
            color: var(--accent-light);
        }
        .site-footer .footer-brand p {
            font-size: 0.95rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }
        .site-footer h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .site-footer ul li {
            margin-bottom: 12px;
        }
        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .site-footer ul li a:hover {
            color: var(--accent-light);
        }
        .site-footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.9rem;
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent-light);
        }
        .site-footer .social {
            display: flex;
            gap: 16px;
        }
        .site-footer .social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.5);
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .site-footer .social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 900px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 640px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 12px;
            }
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 520px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-sub {
                font-size: 1rem;
            }
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 辅助 ===== */
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
        }
        .justify-center {
            justify-content: center;
        }
        .items-center {
            align-items: center;
        }