/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #1a365d;
            --color-primary-light: #2a4a7f;
            --color-primary-dark: #0f1f3a;
            --color-secondary: #d69e2e;
            --color-secondary-light: #ecc94b;
            --color-secondary-dark: #b8860b;
            --color-accent: #dd6b20;
            --color-bg: #f8fafc;
            --color-bg-alt: #edf2f7;
            --color-bg-card: #ffffff;
            --color-bg-dark: #1a202c;
            --color-text: #1e293b;
            --color-text-body: #334155;
            --color-text-light: #64748b;
            --color-text-inverse: #ffffff;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #48bb78;
            --color-warning: #ecc94b;
            --color-error: #fc8181;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --section-gap: 96px;
            --section-gap-sm: 56px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text-body);
            background: var(--color-bg);
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--color-primary-light);
        }
        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;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin-top: 0;
            color: var(--color-text);
            line-height: 1.3;
            font-weight: 700;
        }
        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.98);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.5px;
        }
        .logo:hover {
            color: var(--color-primary-light);
        }
        .logo i {
            color: var(--color-secondary);
            font-size: 26px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-body);
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-secondary);
            transition: var(--transition);
            border-radius: 2px;
        }
        .nav-links a:hover {
            color: var(--color-primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary);
            color: var(--color-text-inverse) !important;
            padding: 8px 20px !important;
            border-radius: var(--radius-md);
            font-weight: 600 !important;
            font-size: 14px !important;
            transition: var(--transition);
        }
        .nav-cta::after {
            display: none !important;
        }
        .nav-cta:hover {
            background: var(--color-primary-light);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
            color: var(--color-text-inverse) !important;
        }
        .mobile-toggle {
            display: none;
            font-size: 24px;
            color: var(--color-primary);
            padding: 4px;
            background: none;
            border: none;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .nav-links {
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 12px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-links a {
                font-size: 16px;
                padding: 10px 0;
                width: 100%;
            }
            .nav-cta {
                width: 100%;
                justify-content: center;
                padding: 12px 20px !important;
            }
            .mobile-toggle {
                display: block;
            }
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            padding-top: calc(var(--header-height) + 40px);
            padding-bottom: 80px;
            background: linear-gradient(135deg, #f8fafc 0%, #eef2f7 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
        }
        .hero-content {
            padding-right: 40px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(214, 158, 46, 0.12);
            color: var(--color-secondary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .hero-badge i {
            font-size: 14px;
        }
        .hero h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.15;
            color: var(--color-primary);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero h1 span {
            color: var(--color-secondary);
        }
        .hero p {
            font-size: 18px;
            color: var(--color-text-light);
            max-width: 520px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--color-primary);
            color: var(--color-text-inverse);
            font-size: 16px;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            transition: var(--transition);
            border: none;
            box-shadow: var(--shadow-md);
        }
        .btn-primary:hover {
            background: var(--color-primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            color: var(--color-text-inverse);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--color-primary);
            font-size: 16px;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            border: 2px solid var(--color-border);
            transition: var(--transition);
        }
        .btn-secondary:hover {
            border-color: var(--color-primary);
            background: rgba(26, 54, 93, 0.04);
            transform: translateY(-2px);
        }
        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            min-height: 400px;
        }
        .hero-visual-bg {
            width: 100%;
            max-width: 520px;
            aspect-ratio: 1 / 1;
            background: linear-gradient(145deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-xl);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-xl);
        }
        .hero-visual-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 30% 40%, rgba(214, 158, 46, 0.25) 0%, transparent 70%);
        }
        .hero-visual-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 70% 60%, rgba(255, 255, 255, 0.08) 0%, transparent 60%);
        }
        .hero-icon-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            position: relative;
            z-index: 1;
            padding: 20px;
        }
        .hero-icon-item {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            color: var(--color-text-inverse);
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: var(--transition);
        }
        .hero-icon-item i {
            font-size: 32px;
            margin-bottom: 8px;
            display: block;
            color: var(--color-secondary-light);
        }
        .hero-icon-item span {
            font-size: 13px;
            font-weight: 500;
            opacity: 0.9;
        }
        .hero-icon-item:hover {
            background: rgba(255, 255, 255, 0.18);
            transform: translateY(-4px);
        }
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 38px;
            }
            .hero-content {
                padding-right: 20px;
            }
        }
        @media (max-width: 768px) {
            .hero {
                padding-top: calc(var(--header-height) + 24px);
                padding-bottom: 48px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero p {
                font-size: 16px;
            }
            .hero-content {
                padding-right: 0;
                margin-bottom: 40px;
            }
            .hero-visual {
                min-height: 300px;
            }
            .hero-visual-bg {
                max-width: 100%;
                aspect-ratio: 1 / 0.9;
            }
            .hero-icon-item i {
                font-size: 26px;
            }
            .hero-icon-item {
                padding: 14px;
            }
        }
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 26px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-title {
            font-size: 36px;
            font-weight: 800;
            color: var(--color-primary);
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 17px;
            color: var(--color-text-light);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }
        .section-subtitle.left {
            text-align: left;
            margin-left: 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-gap-sm) 0;
            }
            .section-title {
                font-size: 28px;
            }
            .section-subtitle {
                font-size: 15px;
                margin-bottom: 32px;
            }
        }

        /* ===== 核心数据 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .stat-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
        }
        .stat-number {
            font-size: 48px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.1;
            margin-bottom: 8px;
        }
        .stat-number span {
            color: var(--color-secondary);
        }
        .stat-label {
            font-size: 15px;
            color: var(--color-text-light);
            font-weight: 500;
        }
        .stat-icon {
            font-size: 28px;
            color: var(--color-secondary);
            margin-bottom: 16px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .stat-card {
                padding: 24px 16px;
            }
            .stat-number {
                font-size: 34px;
            }
            .stat-label {
                font-size: 13px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stats-grid .stat-card:last-child {
                grid-column: 1 / -1;
            }
        }

        /* ===== 关于 ===== */
        .about-wrap {
            display: flex;
            align-items: center;
            gap: 60px;
        }
        .about-text {
            flex: 1;
        }
        .about-text p {
            font-size: 16px;
            color: var(--color-text-body);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .about-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-bg-alt);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 50px;
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--color-primary);
            color: var(--color-text-inverse);
            border-color: var(--color-primary);
        }
        .tag i {
            font-size: 12px;
        }
        .about-visual {
            flex: 0 0 360px;
            height: 360px;
            background: linear-gradient(145deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-inverse);
            font-size: 80px;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .about-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 70% 30%, rgba(214, 158, 46, 0.2) 0%, transparent 60%);
        }
        .about-visual i {
            position: relative;
            z-index: 1;
        }
        @media (max-width: 1024px) {
            .about-visual {
                flex: 0 0 280px;
                height: 280px;
                font-size: 60px;
            }
        }
        @media (max-width: 768px) {
            .about-wrap {
                flex-direction: column;
                gap: 32px;
            }
            .about-visual {
                flex: 0 0 200px;
                height: 200px;
                width: 100%;
                font-size: 48px;
            }
        }

        /* ===== 分类入口 ===== */
        .category-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border);
        }
        .category-icon {
            font-size: 48px;
            color: var(--color-secondary);
            margin-bottom: 16px;
        }
        .category-card h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
        }
        .category-card p {
            font-size: 15px;
            color: var(--color-text-light);
            margin-bottom: 20px;
            line-height: 1.7;
        }
        .category-card .btn-primary {
            font-size: 14px;
            padding: 10px 24px;
        }

        /* ===== 最新资讯 ===== */
        .news-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .news-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
            display: block;
        }
        .news-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--color-text-light);
            margin-bottom: 10px;
        }
        .news-meta .news-cat {
            display: inline-block;
            background: rgba(214, 158, 46, 0.12);
            color: var(--color-secondary-dark);
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 12px;
        }
        .news-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
            transition: var(--transition);
        }
        .news-item:hover h3 {
            color: var(--color-primary);
        }
        .news-item p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px 20px;
            color: var(--color-text-light);
            font-size: 15px;
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }
        @media (max-width: 768px) {
            .news-list {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-item {
                padding: 18px 20px;
            }
            .news-item h3 {
                font-size: 16px;
            }
        }

        /* ===== 使用流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            position: relative;
            transition: var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-text-inverse);
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            position: relative;
            z-index: 1;
        }
        .step-card h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--color-text-light);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .step-connector {
            display: none;
        }
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== 平台特色 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: rgba(214, 158, 46, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--color-secondary);
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--color-secondary);
            color: var(--color-text-inverse);
        }
        .feature-card h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .feature-card {
                padding: 24px 20px;
            }
        }
        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            background: transparent;
            text-align: left;
            cursor: pointer;
            border: none;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question i {
            font-size: 18px;
            color: var(--color-secondary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .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;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .faq-question {
                font-size: 15px;
                padding: 14px 18px;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(145deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 30% 50%, rgba(214, 158, 46, 0.15) 0%, transparent 60%);
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--color-text-inverse);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-section .btn-primary {
            background: var(--color-secondary);
            color: var(--color-primary);
            font-size: 17px;
            padding: 16px 40px;
            box-shadow: 0 8px 32px rgba(214, 158, 46, 0.35);
        }
        .cta-section .btn-primary:hover {
            background: var(--color-secondary-light);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(214, 158, 46, 0.45);
            color: var(--color-primary);
        }
        .cta-section .btn-secondary-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--color-text-inverse);
            border: 2px solid rgba(255, 255, 255, 0.3);
            font-size: 16px;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            transition: var(--transition);
        }
        .cta-section .btn-secondary-light:hover {
            border-color: rgba(255, 255, 255, 0.6);
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-2px);
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 28px;
            }
            .cta-section p {
                font-size: 15px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn-primary,
            .cta-actions .btn-secondary-light {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-bg-dark);
            padding: 48px 0 32px;
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            color: var(--color-text-inverse);
            margin-bottom: 12px;
        }
        .footer-brand .logo i {
            color: var(--color-secondary);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-inverse);
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--color-secondary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--color-secondary);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 额外响应式 ===== */
        @media (max-width: 1024px) {
            .hero .grid-x {
                flex-direction: column;
            }
            .hero .cell:first-child {
                order: 1;
            }
            .hero .cell:last-child {
                order: 0;
                margin-bottom: 32px;
            }
            .hero-visual {
                min-height: auto;
            }
            .hero-visual-bg {
                max-width: 400px;
                aspect-ratio: 1 / 0.9;
            }
        }

        /* ===== 滚动动画辅助 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a6b;
            --primary-light: #2a5a9e;
            --primary-dark: #0f2444;
            --accent: #e8b830;
            --accent-light: #f0cc5a;
            --accent-dark: #c9a020;
            --bg-body: #f8f9fc;
            --bg-card: #ffffff;
            --bg-alt: #eef1f7;
            --bg-dark: #0f2444;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-light: #8a9aaa;
            --text-white: #ffffff;
            --text-muted: #aab5c5;
            --border-color: #e2e6ee;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.16);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
            --gap-section: 5rem;
            --gap-block: 2.5rem;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            padding-top: var(--nav-height);
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        .section-title { font-size: 2rem; margin-bottom: 0.5rem; text-align: center; }
        .section-subtitle { font-size: 1.05rem; color: var(--text-secondary); text-align: center; max-width: 640px; margin: 0 auto 2.5rem; }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mt-2 { margin-top: 2rem; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed; top: 0; left: 0; width: 100%; height: var(--nav-height);
            background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000; transition: var(--transition);
        }
        .site-header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.35rem; font-weight: 800; color: var(--primary); letter-spacing: -0.3px;
        }
        .logo i { color: var(--accent); font-size: 1.6rem; }
        .logo:hover { color: var(--primary); }
        .nav-links { display: flex; align-items: center; gap: 6px; }
        .nav-links a {
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 0.92rem; font-weight: 500; color: var(--text-secondary);
            transition: var(--transition); position: relative;
        }
        .nav-links a:hover { color: var(--primary); background: var(--bg-alt); }
        .nav-links a.active { color: var(--primary); background: var(--bg-alt); font-weight: 600; }
        .nav-links a.active::after { content: ''; position: absolute; bottom: -2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--accent); border-radius: 4px; }
        .nav-links a.nav-cta {
            background: var(--primary); color: var(--text-white); padding: 10px 24px;
            border-radius: var(--radius-md); font-weight: 600; display: flex; align-items: center; gap: 8px;
        }
        .nav-links a.nav-cta:hover { background: var(--primary-light); transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .nav-toggle { display: none; font-size: 1.6rem; color: var(--primary); cursor: pointer; background: none; border: none; padding: 8px; }

        /* ===== Hero 文章头图 ===== */
        .article-hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            padding: 3.5rem 0 3rem; color: var(--text-white); position: relative; overflow: hidden;
        }
        .article-hero::before { content: ''; position: absolute; top: -40%; right: -20%; width: 500px; height: 500px; background: rgba(232, 184, 48, 0.08); border-radius: 50%; }
        .article-hero::after { content: ''; position: absolute; bottom: -30%; left: -10%; width: 400px; height: 400px; background: rgba(255, 255, 255, 0.03); border-radius: 50%; }
        .article-hero .container { position: relative; z-index: 1; }
        .article-hero .breadcrumb { font-size: 0.85rem; color: rgba(255, 255, 255, 0.6); margin-bottom: 1.2rem; display: flex; flex-wrap: wrap; gap: 8px; }
        .article-hero .breadcrumb a { color: rgba(255, 255, 255, 0.7); }
        .article-hero .breadcrumb a:hover { color: var(--accent); }
        .article-hero .breadcrumb span { color: rgba(255, 255, 255, 0.9); }
        .article-hero h1 { font-size: 2.4rem; color: var(--text-white); max-width: 860px; line-height: 1.3; margin-bottom: 1rem; }
        .article-hero .meta-info { display: flex; flex-wrap: wrap; gap: 20px; font-size: 0.92rem; color: rgba(255, 255, 255, 0.7); }
        .article-hero .meta-info i { margin-right: 6px; color: var(--accent); }
        .article-hero .meta-info .category-tag { background: var(--accent); color: var(--primary-dark); padding: 2px 14px; border-radius: 20px; font-weight: 600; font-size: 0.82rem; }

        /* ===== 文章正文 ===== */
        .article-main { padding: 3rem 0 4rem; }
        .article-body { background: var(--bg-card); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: 2.5rem 3rem; max-width: 820px; margin: 0 auto; }
        .article-body .content { font-size: 1.05rem; line-height: 1.9; color: var(--text-primary); }
        .article-body .content p { margin-bottom: 1.4rem; }
        .article-body .content h2 { font-size: 1.5rem; margin: 2rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--bg-alt); }
        .article-body .content h3 { font-size: 1.25rem; margin: 1.6rem 0 0.8rem; }
        .article-body .content ul, .article-body .content ol { margin: 1rem 0 1.4rem 1.6rem; }
        .article-body .content li { margin-bottom: 0.5rem; list-style: disc; }
        .article-body .content ol li { list-style: decimal; }
        .article-body .content a { color: var(--primary-light); text-decoration: underline; }
        .article-body .content blockquote { border-left: 4px solid var(--accent); background: var(--bg-alt); padding: 1.2rem 1.6rem; margin: 1.6rem 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-style: italic; color: var(--text-secondary); }
        .article-body .content img { border-radius: var(--radius-md); margin: 1.6rem 0; box-shadow: var(--shadow-sm); }
        .article-body .content .highlight { background: var(--bg-alt); padding: 0.2rem 0.6rem; border-radius: 4px; font-weight: 500; }

        /* ===== 文章标签 & 分享 ===== */
        .article-footer-bar { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--border-color); }
        .article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
        .article-tags .tag { background: var(--bg-alt); padding: 4px 14px; border-radius: 20px; font-size: 0.82rem; color: var(--text-secondary); transition: var(--transition); }
        .article-tags .tag:hover { background: var(--primary); color: var(--text-white); }
        .share-links { display: flex; gap: 12px; align-items: center; }
        .share-links span { font-size: 0.85rem; color: var(--text-light); }
        .share-links a { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: var(--bg-alt); color: var(--text-secondary); transition: var(--transition); }
        .share-links a:hover { background: var(--primary); color: var(--text-white); transform: translateY(-2px); }

        /* ===== 相关文章 ===== */
        .related-section { background: var(--bg-alt); padding: 3.5rem 0; }
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .related-card { background: var(--bg-card); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card .card-img { height: 180px; background: var(--border-color); display: flex; align-items: center; justify-content: center; color: var(--text-light); font-size: 2.5rem; }
        .related-card .card-body { padding: 1.2rem 1.4rem 1.4rem; }
        .related-card .card-body h4 { font-size: 1.05rem; margin-bottom: 0.4rem; }
        .related-card .card-body h4 a { color: var(--text-primary); }
        .related-card .card-body h4 a:hover { color: var(--primary); }
        .related-card .card-body p { font-size: 0.88rem; color: var(--text-secondary); margin-bottom: 0.6rem; }
        .related-card .card-body .meta { font-size: 0.8rem; color: var(--text-light); }

        /* ===== 分类入口 ===== */
        .category-nav-section { padding: 3rem 0; background: var(--bg-card); }
        .category-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .category-item { text-align: center; padding: 1.6rem 1rem; border-radius: var(--radius-md); background: var(--bg-body); transition: var(--transition); border: 1px solid var(--border-color); }
        .category-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--accent); }
        .category-item i { font-size: 2rem; color: var(--primary); margin-bottom: 0.6rem; }
        .category-item h5 { font-size: 1rem; margin-bottom: 0.3rem; }
        .category-item span { font-size: 0.82rem; color: var(--text-light); }

        /* ===== FAQ ===== */
        .faq-section { padding: 3.5rem 0; background: var(--bg-alt); }
        .faq-list { max-width: 760px; margin: 0 auto; }
        .faq-item { background: var(--bg-card); border-radius: var(--radius-md); margin-bottom: 12px; box-shadow: var(--shadow-sm); overflow: hidden; transition: var(--transition); }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-question { padding: 1.2rem 1.6rem; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: var(--text-primary); font-size: 1rem; background: none; border: none; width: 100%; text-align: left; }
        .faq-question i { transition: var(--transition); color: var(--accent); font-size: 1.1rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer { padding: 0 1.6rem 1.2rem; color: var(--text-secondary); line-height: 1.7; display: none; }
        .faq-item.active .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section { padding: 3.5rem 0; background: linear-gradient(135deg, var(--primary-dark), var(--primary)); color: var(--text-white); text-align: center; }
        .cta-section h2 { color: var(--text-white); font-size: 2rem; margin-bottom: 0.8rem; }
        .cta-section p { color: rgba(255, 255, 255, 0.8); max-width: 560px; margin: 0 auto 1.8rem; font-size: 1.05rem; }
        .cta-btn { display: inline-flex; align-items: center; gap: 10px; background: var(--accent); color: var(--primary-dark); padding: 14px 36px; border-radius: var(--radius-md); font-weight: 700; font-size: 1.05rem; transition: var(--transition); }
        .cta-btn:hover { background: var(--accent-light); color: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-lg); }

        /* ===== Footer ===== */
        .site-footer { background: var(--bg-dark); color: rgba(255, 255, 255, 0.7); padding: 3rem 0 1.5rem; }
        .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 2rem; }
        .footer-brand .logo { color: var(--text-white); font-size: 1.3rem; margin-bottom: 0.8rem; }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand p { font-size: 0.88rem; line-height: 1.7; color: rgba(255, 255, 255, 0.6); max-width: 300px; }
        .footer-col h5 { color: var(--text-white); font-size: 0.95rem; margin-bottom: 1rem; font-weight: 600; }
        .footer-col ul li { margin-bottom: 0.6rem; }
        .footer-col ul li a { color: rgba(255, 255, 255, 0.6); font-size: 0.88rem; transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
        .footer-col ul li a i { width: 20px; margin-right: 6px; color: var(--accent); }
        .footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 1.2rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; color: rgba(255, 255, 255, 0.5); }
        .footer-bottom a { color: rgba(255, 255, 255, 0.6); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .category-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            :root { --nav-height: 64px; --gap-section: 3rem; }
            .nav-links { display: none; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; width: 100%; background: var(--bg-card); border-bottom: 1px solid var(--border-color); padding: 12px 20px; gap: 4px; box-shadow: var(--shadow-md); }
            .nav-links.open { display: flex; }
            .nav-links a { padding: 10px 16px; width: 100%; }
            .nav-links a.nav-cta { justify-content: center; }
            .nav-toggle { display: block; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-body { padding: 1.5rem 1.2rem; }
            .article-body .content { font-size: 0.98rem; }
            .section-title { font-size: 1.5rem; }
            .related-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
            .article-footer-bar { flex-direction: column; align-items: flex-start; gap: 16px; }
            .cta-section h2 { font-size: 1.5rem; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-hero { padding: 2rem 0 1.8rem; }
            .article-hero h1 { font-size: 1.3rem; }
            .article-body { padding: 1rem 0.8rem; border-radius: var(--radius-md); }
            .category-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .category-item { padding: 1rem 0.6rem; }
            .related-card .card-img { height: 140px; }
            .faq-question { font-size: 0.92rem; padding: 1rem 1.2rem; }
            .faq-answer { padding: 0 1.2rem 1rem; font-size: 0.9rem; }
        }

        /* ===== 内容未找到 ===== */
        .not-found-box { text-align: center; padding: 3rem 1.5rem; }
        .not-found-box i { font-size: 3.5rem; color: var(--text-light); margin-bottom: 1rem; }
        .not-found-box h3 { font-size: 1.5rem; margin-bottom: 0.6rem; }
        .not-found-box p { color: var(--text-secondary); margin-bottom: 1.6rem; }
        .not-found-box .btn-home { display: inline-flex; align-items: center; gap: 8px; background: var(--primary); color: var(--text-white); padding: 12px 28px; border-radius: var(--radius-md); font-weight: 600; transition: var(--transition); }
        .not-found-box .btn-home:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a6b;
            --primary-light: #2a5a9e;
            --primary-dark: #0f264a;
            --accent: #e8b830;
            --accent-light: #f0d060;
            --accent-dark: #c9a020;
            --bg-body: #f5f7fc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-section-alt: #eef2f8;
            --text-dark: #1a1a2e;
            --text-body: #2d3748;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border-color: #e2e8f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.08);
            --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.10);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::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-sans);
            color: var(--text-body);
            background: var(--bg-body);
            line-height: 1.6;
            font-size: 16px;
            padding-top: var(--header-height);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航 Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .logo:hover {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            transition: background var(--transition), color var(--transition);
        }
        .nav-links a:hover {
            background: rgba(26, 58, 107, 0.06);
            color: var(--primary);
        }
        .nav-links a.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-links a.nav-cta {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a.nav-cta:hover {
            background: var(--accent-light);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover {
            background: rgba(26, 58, 107, 0.06);
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 6px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-110%);
                opacity: 0;
                transition: transform 0.35s ease, opacity 0.3s ease;
                box-shadow: var(--shadow-lg);
                pointer-events: none;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .nav-links a.nav-cta {
                justify-content: center;
                margin-top: 4px;
            }
            .nav-toggle {
                display: block;
            }
        }

        /* ===== 页面标题区 (分类页 Hero) ===== */
        .page-hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 70%, var(--primary-light) 100%);
            color: #fff;
            padding: 80px 0 64px;
            position: relative;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(232, 184, 48, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #fff;
        }
        .page-hero h1 i {
            color: var(--accent);
            margin-right: 12px;
        }
        .page-hero p {
            font-size: 1.15rem;
            max-width: 640px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .page-hero .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 16px;
        }
        .page-hero .hero-badges span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
        }
        .page-hero .hero-badges span i {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 60px 0 48px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .page-hero .hero-badges span {
                font-size: 0.8rem;
                padding: 4px 12px;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            text-align: center;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 44px;
            line-height: 1.7;
        }
        .section-title-left {
            text-align: left;
        }
        .section-sub-left {
            text-align: left;
            margin-left: 0;
        }
        @media (max-width: 640px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-sub {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            transition: transform var(--transition), box-shadow var(--transition);
            border: 1px solid var(--border-color);
            height: 100%;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .card .card-icon {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 16px;
        }
        .card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .card .card-tag {
            display: inline-block;
            background: rgba(232, 184, 48, 0.15);
            color: var(--accent-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        /* ===== 网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 184, 48, 0.35);
            color: var(--primary-dark);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.6);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-lg {
            padding: 16px 44px;
            font-size: 1.1rem;
        }

        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.3px;
        }
        .badge-accent {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .badge-soft {
            background: rgba(26, 58, 107, 0.08);
            color: var(--primary);
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .stat-item .stat-number i {
            color: var(--accent);
            font-size: 2rem;
            margin-right: 6px;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            position: relative;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-num {
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
            margin: 0 auto 16px;
        }
        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .steps {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .steps {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 图文信息区块 ===== */
        .info-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .info-block .info-content h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .info-block .info-content p {
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .info-block .info-content .info-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 16px;
        }
        .info-block .info-content .info-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-body);
            font-size: 0.95rem;
        }
        .info-block .info-content .info-list li i {
            color: var(--accent);
            margin-top: 3px;
            flex-shrink: 0;
        }
        .info-block .info-visual {
            background: var(--bg-section-alt);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            text-align: center;
            border: 1px solid var(--border-color);
            min-height: 280px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .info-block .info-visual i {
            font-size: 4rem;
            color: var(--primary-light);
            margin-bottom: 16px;
        }
        .info-block .info-visual h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--primary);
        }
        .info-block .info-visual p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-top: 8px;
        }
        @media (max-width: 768px) {
            .info-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .info-block .info-content h2 {
                font-size: 1.5rem;
            }
            .info-block .info-visual {
                min-height: 200px;
                padding: 28px 20px;
            }
        }

        /* ===== 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-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            text-align: left;
            transition: background var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            background: rgba(26, 58, 107, 0.02);
        }
        .faq-question i {
            color: var(--primary-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-muted);
            line-height: 1.8;
            font-size: 0.95rem;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            text-align: center;
            padding: 72px 0;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-section .btn {
            font-size: 1.1rem;
            padding: 16px 48px;
        }
        @media (max-width: 640px) {
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 52px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-brand .logo {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand .logo i {
            color: var(--accent);
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer .footer-col h5 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--accent);
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 8px;
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent);
        }
        @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: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 16px auto 0;
        }
        .divider-left {
            margin-left: 0;
        }

        /* ===== 响应式辅助 ===== */
        @media (max-width: 1024px) {
            :root {
                --container-max: 960px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            body {
                padding-top: var(--header-height);
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
        }

        /* ===== 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;
        }
        .animate-fade-up-d1 {
            animation-delay: 0.1s;
        }
        .animate-fade-up-d2 {
            animation-delay: 0.2s;
        }
        .animate-fade-up-d3 {
            animation-delay: 0.3s;
        }

        /* ===== 内容列表 ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .content-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 20px;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .content-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .content-item .item-icon {
            width: 48px;
            height: 48px;
            background: rgba(232, 184, 48, 0.12);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-dark);
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        .content-item .item-text h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .content-item .item-text p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .content-item .item-meta {
            margin-left: auto;
            font-size: 0.8rem;
            color: var(--text-light);
            white-space: nowrap;
            flex-shrink: 0;
        }
        @media (max-width: 640px) {
            .content-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 16px 18px;
            }
            .content-item .item-meta {
                margin-left: 0;
            }
        }

        /* ===== 子分类导航 ===== */
        .subnav-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .subnav-tabs a {
            padding: 10px 24px;
            border-radius: 50px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
        }
        .subnav-tabs a:hover {
            border-color: var(--primary-light);
            color: var(--primary);
        }
        .subnav-tabs a.active-tab {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }