/* roulang page: index */
:root {
        --primary: #1B3A5C;
        --primary-light: #2A5A8A;
        --primary-dark: #0F2440;
        --accent: #E8A838;
        --accent-light: #F0C060;
        --accent-dark: #C88A20;
        --bg: #F5F3EE;
        --bg-card: #FFFFFF;
        --bg-dark: #1B3A5C;
        --text: #1A1A2E;
        --text-light: #6B7280;
        --text-white: #FFFFFF;
        --border: #E5E7EB;
        --border-light: #F3F4F6;
        --radius: 16px;
        --radius-sm: 8px;
        --radius-lg: 24px;
        --shadow: 0 4px 20px rgba(0,0,0,0.06);
        --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
        --shadow-dock: 0 8px 32px rgba(0,0,0,0.08);
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
        --container: 1200px;
        --nav-height: 72px;
    }

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

    html { scroll-behavior: smooth; font-size: 16px; }

    body {
        font-family: var(--font-sans);
        color: var(--text);
        background: var(--bg);
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
    a:hover { color: var(--accent); }
    a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

    img { max-width: 100%; height: auto; display: block; }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }
    button { cursor: pointer; border: none; background: none; }
    ul, ol { list-style: none; }

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

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

    /* ===== 浮动 Dock 导航 ===== */
    .header {
        position: fixed;
        top: 16px;
        left: 0;
        right: 0;
        z-index: 1000;
        display: flex;
        justify-content: center;
        pointer-events: none;
    }

    .nav-dock {
        pointer-events: auto;
        display: flex;
        align-items: center;
        justify-content: space-between;
        background: rgba(255,255,255,0.88);
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        border: 1px solid rgba(255,255,255,0.6);
        border-radius: 80px;
        padding: 8px 24px 8px 28px;
        max-width: 900px;
        width: 100%;
        box-shadow: var(--shadow-dock);
        transition: box-shadow var(--transition);
    }

    .nav-dock:hover {
        box-shadow: 0 12px 48px rgba(0,0,0,0.12);
    }

    .nav-logo {
        font-size: 1.35rem;
        font-weight: 700;
        color: var(--primary);
        letter-spacing: -0.02em;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .nav-logo .logo-icon {
        width: 36px;
        height: 36px;
        background: var(--accent);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary-dark);
        font-weight: 800;
        font-size: 1rem;
    }

    .nav-links {
        display: flex;
        align-items: center;
        gap: 4px;
    }

    .nav-links a {
        padding: 8px 20px;
        border-radius: 40px;
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--text);
        transition: all var(--transition);
        position: relative;
    }

    .nav-links a:hover {
        background: rgba(27,58,92,0.06);
        color: var(--primary);
    }

    .nav-links a.active {
        background: var(--primary);
        color: var(--text-white);
        box-shadow: 0 4px 12px rgba(27,58,92,0.25);
    }

    .nav-links a.active:hover {
        background: var(--primary-light);
        color: var(--text-white);
    }

    .nav-cta {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .nav-cta .btn-nav {
        padding: 8px 24px;
        border-radius: 40px;
        font-size: 0.85rem;
        font-weight: 600;
        background: var(--accent);
        color: var(--primary-dark);
        transition: all var(--transition);
        box-shadow: 0 2px 8px rgba(232,168,56,0.3);
    }

    .nav-cta .btn-nav:hover {
        background: var(--accent-light);
        transform: translateY(-1px);
        box-shadow: 0 6px 20px rgba(232,168,56,0.4);
    }

    .nav-toggle {
        display: none;
        flex-direction: column;
        gap: 4px;
        padding: 8px;
        cursor: pointer;
        background: rgba(27,58,92,0.06);
        border-radius: 50%;
        width: 40px;
        height: 40px;
        align-items: center;
        justify-content: center;
    }

    .nav-toggle span {
        width: 20px;
        height: 2px;
        background: var(--text);
        border-radius: 2px;
        transition: all var(--transition);
    }

    @media (max-width: 768px) {
        .header { top: 12px; }
        .nav-dock {
            padding: 6px 16px 6px 20px;
            border-radius: 60px;
        }
        .nav-links {
            display: none;
            position: absolute;
            top: calc(100% + 12px);
            left: 0;
            right: 0;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(20px);
            border-radius: 24px;
            padding: 12px;
            flex-direction: column;
            gap: 4px;
            box-shadow: var(--shadow-dock);
            border: 1px solid rgba(255,255,255,0.6);
        }
        .nav-links.open {
            display: flex;
        }
        .nav-links a {
            width: 100%;
            text-align: center;
            padding: 12px 20px;
        }
        .nav-toggle {
            display: flex;
        }
        .nav-cta .btn-nav {
            padding: 6px 16px;
            font-size: 0.8rem;
        }
        .nav-logo { font-size: 1.15rem; }
        .nav-logo .logo-icon { width: 32px; height: 32px; font-size: 0.85rem; }
    }

    @media (max-width: 480px) {
        .nav-dock { padding: 6px 12px 6px 16px; }
        .nav-cta .btn-nav { padding: 6px 14px; font-size: 0.75rem; }
    }

    /* ===== Hero ===== */
    .hero {
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        position: relative;
        background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
        overflow: hidden;
        padding: 120px 24px 80px;
    }

    .hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        opacity: 0.15;
        pointer-events: none;
    }

    .hero::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        right: 0;
        height: 120px;
        background: linear-gradient(to top, var(--bg), transparent);
        pointer-events: none;
    }

    .hero-content {
        position: relative;
        z-index: 2;
        max-width: 800px;
        margin: 0 auto;
    }

    .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(255,255,255,0.15);
        border-radius: 40px;
        padding: 6px 16px 6px 10px;
        font-size: 0.78rem;
        color: rgba(255,255,255,0.9);
        margin-bottom: 24px;
        font-weight: 500;
    }

    .hero-badge .dot {
        width: 8px;
        height: 8px;
        background: var(--accent);
        border-radius: 50%;
        display: inline-block;
        animation: pulse-dot 2s infinite;
    }

    @keyframes pulse-dot {
        0%, 100% { opacity: 1; transform: scale(1); }
        50% { opacity: 0.6; transform: scale(0.9); }
    }

    .hero h1 {
        font-size: 3.5rem;
        font-weight: 800;
        line-height: 1.15;
        color: var(--text-white);
        letter-spacing: -0.03em;
        margin-bottom: 20px;
    }

    .hero h1 .highlight {
        color: var(--accent);
        position: relative;
    }

    .hero p {
        font-size: 1.15rem;
        color: rgba(255,255,255,0.7);
        max-width: 600px;
        margin: 0 auto 36px;
        line-height: 1.7;
    }

    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        justify-content: center;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 14px 32px;
        border-radius: 60px;
        font-weight: 600;
        font-size: 0.95rem;
        transition: all var(--transition);
        border: none;
    }

    .btn-primary {
        background: var(--accent);
        color: var(--primary-dark);
        box-shadow: 0 4px 16px rgba(232,168,56,0.35);
    }

    .btn-primary:hover {
        background: var(--accent-light);
        transform: translateY(-2px);
        box-shadow: 0 8px 30px rgba(232,168,56,0.45);
        color: var(--primary-dark);
    }

    .btn-outline {
        background: transparent;
        color: var(--text-white);
        border: 1.5px solid rgba(255,255,255,0.25);
    }

    .btn-outline:hover {
        background: rgba(255,255,255,0.08);
        border-color: rgba(255,255,255,0.4);
        color: var(--text-white);
        transform: translateY(-2px);
    }

    .hero-stats {
        display: flex;
        gap: 40px;
        justify-content: center;
        margin-top: 48px;
        padding-top: 36px;
        border-top: 1px solid rgba(255,255,255,0.1);
    }

    .hero-stat h3 {
        font-size: 1.8rem;
        font-weight: 700;
        color: var(--text-white);
    }

    .hero-stat p {
        font-size: 0.85rem;
        color: rgba(255,255,255,0.55);
        margin: 4px 0 0;
    }

    @media (max-width: 768px) {
        .hero { padding: 100px 16px 60px; min-height: 90vh; }
        .hero h1 { font-size: 2.2rem; }
        .hero p { font-size: 1rem; }
        .hero-stats { gap: 24px; flex-wrap: wrap; }
        .hero-stat h3 { font-size: 1.4rem; }
    }

    @media (max-width: 480px) {
        .hero h1 { font-size: 1.8rem; }
        .btn { padding: 12px 24px; font-size: 0.85rem; }
    }

    /* ===== 板块通用 ===== */
    .section {
        padding: 80px 0;
    }

    .section-header {
        text-align: center;
        max-width: 640px;
        margin: 0 auto 48px;
    }

    .section-header h2 {
        font-size: 2rem;
        font-weight: 700;
        color: var(--primary);
        letter-spacing: -0.02em;
        margin-bottom: 12px;
    }

    .section-header p {
        color: var(--text-light);
        font-size: 1rem;
        line-height: 1.7;
    }

    .section-header .badge {
        display: inline-block;
        background: rgba(232,168,56,0.12);
        color: var(--accent-dark);
        font-size: 0.8rem;
        font-weight: 600;
        padding: 4px 16px;
        border-radius: 40px;
        margin-bottom: 12px;
        border: 1px solid rgba(232,168,56,0.2);
    }

    @media (max-width: 768px) {
        .section { padding: 56px 0; }
        .section-header h2 { font-size: 1.5rem; }
        .section-header { margin-bottom: 32px; }
    }

    /* ===== 核心说明板块 ===== */
    .features-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .feature-card {
        background: var(--bg-card);
        border-radius: var(--radius);
        padding: 32px 28px;
        box-shadow: var(--shadow);
        transition: all var(--transition);
        border: 1px solid var(--border-light);
        text-align: center;
    }

    .feature-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
        border-color: rgba(232,168,56,0.2);
    }

    .feature-card .icon {
        width: 56px;
        height: 56px;
        border-radius: 16px;
        background: rgba(27,58,92,0.06);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 16px;
        font-size: 1.6rem;
        color: var(--accent);
        transition: background var(--transition);
    }

    .feature-card:hover .icon {
        background: rgba(232,168,56,0.12);
    }

    .feature-card h3 {
        font-size: 1.1rem;
        font-weight: 600;
        margin-bottom: 8px;
        color: var(--primary);
    }

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

    @media (max-width: 768px) {
        .features-grid { grid-template-columns: 1fr; gap: 16px; }
        .feature-card { padding: 24px 20px; }
    }

    @media (min-width: 769px) and (max-width: 1024px) {
        .features-grid { grid-template-columns: repeat(2, 1fr); }
    }

    /* ===== 分类入口 ===== */
    .category-section {
        background: var(--bg-card);
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }

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

    .category-card {
        border-radius: var(--radius);
        overflow: hidden;
        background: var(--bg-card);
        box-shadow: var(--shadow);
        transition: all var(--transition);
        border: 1px solid var(--border-light);
        display: flex;
        flex-direction: column;
    }

    .category-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
    }

    .category-card .card-img {
        width: 100%;
        height: 200px;
        object-fit: cover;
        display: block;
    }

    .category-card .card-body {
        padding: 24px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }

    .category-card .card-body h3 {
        font-size: 1.15rem;
        font-weight: 600;
        color: var(--primary);
        margin-bottom: 8px;
    }

    .category-card .card-body p {
        font-size: 0.88rem;
        color: var(--text-light);
        line-height: 1.6;
        flex: 1;
        margin-bottom: 16px;
    }

    .category-card .card-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 0.8rem;
        color: var(--text-light);
    }

    .category-card .card-meta .tag {
        background: rgba(27,58,92,0.06);
        padding: 2px 12px;
        border-radius: 40px;
        font-size: 0.75rem;
        color: var(--primary);
    }

    .card-link {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-weight: 600;
        font-size: 0.88rem;
        color: var(--accent-dark);
        transition: gap var(--transition);
    }

    .card-link:hover {
        gap: 12px;
        color: var(--accent);
    }

    @media (max-width: 768px) {
        .category-cards { grid-template-columns: 1fr; gap: 16px; }
        .category-card .card-img { height: 160px; }
    }

    /* ===== 资讯列表 ===== */
    .news-list {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }

    .news-item {
        background: var(--bg-card);
        border-radius: var(--radius);
        padding: 20px 24px;
        box-shadow: var(--shadow);
        transition: all var(--transition);
        border: 1px solid var(--border-light);
        display: flex;
        flex-direction: column;
    }

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

    .news-item .news-category {
        font-size: 0.75rem;
        font-weight: 600;
        color: var(--accent-dark);
        background: rgba(232,168,56,0.1);
        padding: 2px 12px;
        border-radius: 40px;
        display: inline-block;
        align-self: flex-start;
        margin-bottom: 8px;
        border: 1px solid rgba(232,168,56,0.15);
    }

    .news-item h3 {
        font-size: 1rem;
        font-weight: 600;
        color: var(--primary);
        margin-bottom: 6px;
        line-height: 1.4;
    }

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

    .news-item h3 a:hover {
        color: var(--accent-dark);
    }

    .news-item .news-excerpt {
        font-size: 0.85rem;
        color: var(--text-light);
        line-height: 1.6;
        flex: 1;
        margin-bottom: 12px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .news-item .news-footer {
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: 0.78rem;
        color: var(--text-light);
        border-top: 1px solid var(--border-light);
        padding-top: 12px;
    }

    .news-empty {
        grid-column: 1 / -1;
        text-align: center;
        padding: 48px 24px;
        color: var(--text-light);
        background: var(--bg-card);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
    }

    @media (max-width: 768px) {
        .news-list { grid-template-columns: 1fr; gap: 16px; }
        .news-item { padding: 16px 18px; }
    }

    /* ===== 数据/流程板块 ===== */
    .steps-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        counter-reset: step;
    }

    .step-card {
        background: var(--bg-card);
        border-radius: var(--radius);
        padding: 28px 24px;
        text-align: center;
        box-shadow: var(--shadow);
        border: 1px solid var(--border-light);
        transition: all var(--transition);
        position: relative;
    }

    .step-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
    }

    .step-card::before {
        counter-increment: step;
        content: "0" counter(step);
        position: absolute;
        top: 12px;
        right: 16px;
        font-size: 2.8rem;
        font-weight: 800;
        color: rgba(27,58,92,0.04);
        line-height: 1;
        pointer-events: none;
    }

    .step-card .step-icon {
        width: 52px;
        height: 52px;
        border-radius: 50%;
        background: rgba(232,168,56,0.1);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 16px;
        font-size: 1.4rem;
        color: var(--accent-dark);
    }

    .step-card h3 {
        font-size: 1.05rem;
        font-weight: 600;
        color: var(--primary);
        margin-bottom: 6px;
    }

    .step-card p {
        font-size: 0.85rem;
        color: var(--text-light);
        line-height: 1.6;
    }

    @media (max-width: 768px) {
        .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    }

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

    /* ===== FAQ ===== */
    .faq-list {
        max-width: 720px;
        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);
        overflow: hidden;
        transition: all var(--transition);
    }

    .faq-item:hover {
        border-color: rgba(232,168,56,0.2);
    }

    .faq-question {
        width: 100%;
        padding: 18px 24px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        font-size: 0.98rem;
        font-weight: 500;
        color: var(--text);
        background: transparent;
        text-align: left;
        transition: color var(--transition);
    }

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

    .faq-question .faq-arrow {
        flex-shrink: 0;
        width: 24px;
        height: 24px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: rgba(27,58,92,0.05);
        transition: all var(--transition);
        font-size: 0.8rem;
        color: var(--text-light);
    }

    .faq-item.active .faq-question .faq-arrow {
        background: var(--accent);
        color: var(--primary-dark);
        transform: rotate(180deg);
    }

    .faq-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: 0.9rem;
        line-height: 1.7;
    }

    .faq-item.active .faq-answer {
        max-height: 300px;
        padding: 0 24px 20px;
    }

    /* ===== CTA ===== */
    .cta-section {
        background: var(--primary);
        position: relative;
        overflow: hidden;
        padding: 80px 0;
    }

    .cta-section::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-content {
        position: relative;
        z-index: 2;
        text-align: center;
        max-width: 600px;
        margin: 0 auto;
    }

    .cta-content h2 {
        font-size: 2rem;
        font-weight: 700;
        color: var(--text-white);
        margin-bottom: 12px;
    }

    .cta-content p {
        color: rgba(255,255,255,0.7);
        font-size: 1rem;
        margin-bottom: 28px;
    }

    .cta-content .btn {
        font-size: 1rem;
        padding: 16px 40px;
    }

    @media (max-width: 768px) {
        .cta-section { padding: 56px 0; }
        .cta-content h2 { font-size: 1.5rem; }
    }

    /* ===== 页脚 ===== */
    .footer {
        background: var(--primary-dark);
        padding: 48px 0 32px;
        color: rgba(255,255,255,0.7);
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 32px;
        margin-bottom: 32px;
    }

    .footer-brand .nav-logo {
        color: var(--text-white);
        margin-bottom: 12px;
    }

    .footer-brand .nav-logo .logo-icon {
        background: var(--accent);
        color: var(--primary-dark);
    }

    .footer-brand p {
        font-size: 0.85rem;
        line-height: 1.7;
        max-width: 300px;
    }

    .footer-col h4 {
        color: var(--text-white);
        font-size: 0.95rem;
        font-weight: 600;
        margin-bottom: 16px;
    }

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

    .footer-col ul li a {
        color: rgba(255,255,255,0.6);
        font-size: 0.85rem;
        transition: color var(--transition);
    }

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

    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.08);
        padding-top: 24px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 0.8rem;
        color: rgba(255,255,255,0.4);
    }

    @media (max-width: 768px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .footer-brand { grid-column: 1 / -1; }
        .footer-bottom { flex-direction: column; text-align: center; }
    }

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

    /* ===== 工具类 ===== */
    .text-center { text-align: center; }
    .mt-16 { margin-top: 16px; }
    .mt-24 { margin-top: 24px; }
    .mt-32 { margin-top: 32px; }
    .mb-16 { margin-bottom: 16px; }
    .gap-8 { gap: 8px; }
    .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a56db;
            --primary-light: #3b82f6;
            --primary-dark: #1e40af;
            --primary-bg: #eff6ff;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --secondary-dark: #d97706;
            --accent: #10b981;
            --bg: #f8fafc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --text: #1e293b;
            --text-secondary: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-lg: 0 10px 30px rgba(0,0,0,0.10);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s ease;
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
            --container: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.25rem; }
        p { margin-bottom: 1rem; }
        .container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

        /* ===== Header / Dock Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 12px 24px;
            background: transparent;
            pointer-events: none;
        }
        .header .nav-dock {
            max-width: 960px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border: 1px solid rgba(255,255,255,0.3);
            border-radius: 60px;
            padding: 8px 24px 8px 20px;
            box-shadow: 0 4px 24px rgba(0,0,0,0.08);
            pointer-events: auto;
            transition: var(--transition);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.3px;
        }
        .nav-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 1.2rem;
            font-weight: 700;
        }
        .nav-logo:hover { color: var(--primary); }
        .nav-links { display: flex; align-items: center; gap: 4px; }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover { color: var(--text); background: var(--border-light); }
        .nav-links a.active { color: #fff; background: var(--primary); }
        .nav-cta { display: flex; align-items: center; gap: 12px; }
        .btn-nav {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 22px;
            border-radius: 30px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-nav:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(26,86,219,0.35); }
        .nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
        .nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 4px; transition: var(--transition); }

        /* ===== Main ===== */
        main { margin-top: var(--nav-height); }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .article-hero .container { position: relative; z-index: 2; text-align: center; }
        .article-hero .article-badge {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 30px;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(4px);
            color: rgba(255,255,255,0.85);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
            border: 1px solid rgba(255,255,255,0.08);
        }
        .article-hero .article-badge i { margin-right: 6px; color: var(--secondary); }
        .article-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            max-width: 800px;
            margin: 0 auto 16px;
            letter-spacing: -0.5px;
            line-height: 1.25;
        }
        .article-hero .article-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            color: rgba(255,255,255,0.65);
            font-size: 0.9rem;
        }
        .article-hero .article-meta i { margin-right: 6px; color: var(--secondary-light); }
        .article-hero .article-meta span { display: inline-flex; align-items: center; }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-secondary);
        }
        .breadcrumb a { color: var(--text-secondary); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb i { font-size: 0.75rem; color: var(--text-light); }
        .breadcrumb .current { color: var(--text); font-weight: 500; }

        /* ===== Article Content ===== */
        .article-section {
            padding: 60px 0;
            background: var(--bg-white);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body h2 { margin-top: 2rem; margin-bottom: 1rem; font-size: 1.6rem; }
        .article-body h3 { margin-top: 1.6rem; margin-bottom: 0.8rem; font-size: 1.25rem; }
        .article-body p { margin-bottom: 1.2rem; }
        .article-body ul, .article-body ol { margin-bottom: 1.2rem; padding-left: 1.5rem; list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 0.4rem; }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            margin: 1.5rem 0;
            background: var(--primary-bg);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: normal;
        }
        .article-body img { margin: 1.5rem 0; border-radius: var(--radius-md); box-shadow: var(--shadow-md); }
        .article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
        .article-body a:hover { color: var(--primary-dark); }
        .article-body .article-tags { margin-top: 2.5rem; display: flex; flex-wrap: wrap; gap: 10px; }
        .article-body .article-tags .tag {
            padding: 5px 16px;
            border-radius: 30px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(26,86,219,0.12);
        }

        /* Sidebar */
        .article-sidebar { position: sticky; top: 100px; align-self: start; }
        .sidebar-card {
            background: var(--bg);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border);
            margin-bottom: 24px;
        }
        .sidebar-card h4 { font-size: 1.05rem; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
        .sidebar-card h4 i { color: var(--primary); }
        .sidebar-card ul li { margin-bottom: 10px; }
        .sidebar-card ul li a {
            font-size: 0.92rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card ul li a:hover { color: var(--primary); }
        .sidebar-card ul li a i { font-size: 0.7rem; color: var(--text-light); }
        .sidebar-cta {
            background: var(--primary);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            color: #fff;
        }
        .sidebar-cta h4 { color: #fff; margin-bottom: 12px; }
        .sidebar-cta p { font-size: 0.9rem; opacity: 0.85; margin-bottom: 18px; }
        .sidebar-cta .btn-sidebar {
            display: inline-block;
            padding: 10px 28px;
            border-radius: 30px;
            background: #fff;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .sidebar-cta .btn-sidebar:hover { background: var(--secondary); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.15); }

        /* ===== Article Navigation (prev/next) ===== */
        .article-nav-section {
            padding: 40px 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
        }
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 24px;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .article-nav a {
            flex: 1;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .article-nav a:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .article-nav .nav-label { font-size: 0.82rem; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.5px; }
        .article-nav .nav-title { font-size: 1rem; font-weight: 600; color: var(--text); }
        .article-nav .next { text-align: right; }
        .article-nav .prev { text-align: left; }
        .article-nav a:hover .nav-title { color: var(--primary); }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 70px 0;
            background: var(--bg);
        }
        .related-section .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .related-section .section-title h2 { font-size: 2rem; font-weight: 700; }
        .related-section .section-title p { color: var(--text-secondary); font-size: 1.05rem; max-width: 560px; margin: 8px auto 0; }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .related-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body { padding: 20px 22px 24px; }
        .related-card .card-body .card-cat {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 20px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 500;
            margin-bottom: 10px;
        }
        .related-card .card-body h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; line-height: 1.4; }
        .related-card .card-body h3 a { color: var(--text); }
        .related-card .card-body h3 a:hover { color: var(--primary); }
        .related-card .card-body p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .card-body .card-meta { font-size: 0.82rem; color: var(--text-light); display: flex; align-items: center; gap: 14px; }
        .related-card .card-body .card-meta i { margin-right: 4px; }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; text-align: center; }
        .cta-section h2 { color: #fff; font-size: 2.2rem; font-weight: 700; margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.8); font-size: 1.1rem; max-width: 600px; margin: 0 auto 28px; }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 38px;
            border-radius: 40px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(0,0,0,0.15);
        }
        .cta-section .btn-cta:hover { background: var(--secondary); color: #fff; transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,0,0,0.25); }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 70px 0;
            background: var(--bg-white);
        }
        .faq-section .section-title { text-align: center; margin-bottom: 48px; }
        .faq-section .section-title h2 { font-size: 2rem; font-weight: 700; }
        .faq-section .section-title p { color: var(--text-secondary); font-size: 1.05rem; max-width: 560px; margin: 8px auto 0; }
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            background: var(--bg-card);
        }
        .faq-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            background: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question i { color: var(--text-light); transition: var(--transition); font-size: 0.9rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s 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;
        }

        /* ===== Footer ===== */
        .footer {
            background: #0f172a;
            color: rgba(255,255,255,0.7);
            padding: 60px 0 0;
        }
        .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;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .nav-logo { color: #fff; font-size: 1.3rem; margin-bottom: 16px; }
        .footer-brand .nav-logo .logo-icon { background: var(--primary); }
        .footer-brand p { font-size: 0.92rem; line-height: 1.7; max-width: 320px; color: rgba(255,255,255,0.6); }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 18px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.55); font-size: 0.9rem; transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0 30px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }

        /* ===== Not Found State ===== */
        .not-found-block {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-white);
        }
        .not-found-block i { font-size: 4rem; color: var(--text-light); margin-bottom: 20px; display: block; }
        .not-found-block h2 { font-size: 1.8rem; margin-bottom: 12px; }
        .not-found-block p { color: var(--text-secondary); font-size: 1.05rem; margin-bottom: 24px; }
        .not-found-block .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 30px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-block .btn-home:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(26,86,219,0.3); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { position: static; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            .header { padding: 10px 16px; }
            .header .nav-dock { padding: 6px 16px 6px 14px; border-radius: 40px; }
            .nav-links { display: none; position: absolute; top: calc(100% + 8px); left: 0; right: 0; background: rgba(255,255,255,0.96); backdrop-filter: blur(16px); border-radius: 20px; padding: 12px; flex-direction: column; gap: 4px; box-shadow: var(--shadow-lg); border: 1px solid var(--border); }
            .nav-links.open { display: flex; }
            .nav-links a { width: 100%; padding: 10px 16px; border-radius: 12px; }
            .nav-toggle { display: flex; }
            .btn-nav { padding: 6px 16px; font-size: 0.85rem; }
            .article-hero { padding: 80px 0 60px; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-hero .article-meta { gap: 12px; font-size: 0.82rem; }
            .article-section { padding: 40px 0; }
            .article-body { font-size: 1rem; }
            .related-grid { grid-template-columns: 1fr; gap: 20px; }
            .related-section { padding: 50px 0; }
            .cta-section { padding: 60px 0; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section .btn-cta { padding: 12px 28px; font-size: 0.95rem; }
            .faq-section { padding: 50px 0; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .article-nav { flex-direction: column; }
            .article-nav a { text-align: center; }
            .article-nav .next, .article-nav .prev { text-align: center; }
        }
        @media (max-width: 520px) {
            .header .nav-dock { padding: 6px 12px 6px 10px; }
            .nav-logo { font-size: 1.1rem; }
            .nav-logo .logo-icon { width: 30px; height: 30px; font-size: 1rem; }
            .btn-nav { padding: 5px 14px; font-size: 0.8rem; gap: 4px; }
            .article-hero h1 { font-size: 1.4rem; }
            .article-hero .article-meta { flex-direction: column; gap: 8px; }
            .breadcrumb-wrap { padding: 10px 0; font-size: 0.8rem; }
            .related-card .card-img { height: 160px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-brand p { max-width: 100%; }
            .faq-question { font-size: 0.92rem; padding: 14px 18px; }
            .faq-answer { font-size: 0.88rem; }
            .sidebar-card { padding: 20px 16px; }
            .sidebar-cta { padding: 22px 16px; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
    :root {
        --primary: #1e3a5f;
        --primary-light: #2a4a7a;
        --primary-dark: #142845;
        --primary-transparent: rgba(30, 58, 95, 0.08);
        --secondary: #c8952e;
        --secondary-light: #e8c66a;
        --secondary-dark: #a87a1e;
        --bg: #f5f7fa;
        --bg-white: #ffffff;
        --bg-card: #ffffff;
        --text: #1a1a2e;
        --text-light: #6b7280;
        --text-lighter: #9ca3af;
        --text-white: #ffffff;
        --border: #e5e7eb;
        --border-light: #f0f2f5;
        --radius-sm: 6px;
        --radius: 12px;
        --radius-lg: 16px;
        --radius-xl: 20px;
        --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.14);
        --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
        --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        --container-width: 1200px;
        --header-height: 72px;
    }

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

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

    body {
        font-family: var(--font-family);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text);
        background: var(--bg);
        padding-top: var(--header-height);
    }

    a {
        color: var(--primary);
        text-decoration: none;
        transition: var(--transition);
    }
    a:hover {
        color: var(--secondary);
    }
    a:focus-visible {
        outline: 2px solid var(--secondary);
        outline-offset: 2px;
        border-radius: 4px;
    }

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

    button,
    input,
    select,
    textarea {
        font-family: inherit;
        font-size: inherit;
        line-height: inherit;
        border: none;
        outline: none;
        background: none;
    }
    button {
        cursor: pointer;
    }

    ul,
    ol {
        list-style: none;
    }

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

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

    /* ===== 导航 Dock ===== */
    .header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: rgba(255, 255, 255, 0.85);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.3);
        height: var(--header-height);
        display: flex;
        align-items: center;
    }

    .nav-dock {
        display: flex;
        align-items: center;
        justify-content: space-between;
        max-width: 1100px;
        margin: 0 auto;
        padding: 0 24px;
        width: 100%;
        background: rgba(255, 255, 255, 0.7);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-radius: 40px;
        border: 1px solid rgba(255, 255, 255, 0.6);
        box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
        height: 56px;
    }

    .nav-logo {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 20px;
        font-weight: 700;
        color: var(--primary);
        text-decoration: none;
        transition: var(--transition);
        flex-shrink: 0;
    }
    .nav-logo:hover {
        color: var(--secondary);
        opacity: 0.9;
    }
    .nav-logo .logo-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 34px;
        height: 34px;
        background: var(--primary);
        color: var(--text-white);
        border-radius: 10px;
        font-size: 18px;
        font-weight: 800;
        flex-shrink: 0;
    }

    .nav-links {
        display: flex;
        align-items: center;
        gap: 4px;
    }
    .nav-links a {
        display: inline-flex;
        align-items: center;
        padding: 8px 18px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-light);
        border-radius: 30px;
        transition: var(--transition);
        text-decoration: none;
    }
    .nav-links a:hover {
        color: var(--primary);
        background: var(--primary-transparent);
    }
    .nav-links a.active {
        color: var(--text-white);
        background: var(--primary);
        font-weight: 600;
    }
    .nav-links a.active:hover {
        color: var(--text-white);
        background: var(--primary-light);
    }

    .nav-cta {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }

    .btn-nav {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 8px 22px;
        font-size: 14px;
        font-weight: 600;
        color: var(--text-white);
        background: var(--secondary);
        border-radius: 30px;
        transition: var(--transition);
        text-decoration: none;
        white-space: nowrap;
    }
    .btn-nav:hover {
        background: var(--secondary-dark);
        color: var(--text-white);
        transform: translateY(-1px);
        box-shadow: 0 4px 16px rgba(200, 149, 46, 0.35);
    }
    .btn-nav:focus-visible {
        outline: 2px solid var(--secondary);
        outline-offset: 3px;
    }

    .nav-toggle {
        display: none;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 40px;
        height: 40px;
        background: transparent;
        border: 1px solid var(--border);
        border-radius: 12px;
        padding: 8px;
        gap: 5px;
        transition: var(--transition);
    }
    .nav-toggle span {
        display: block;
        width: 22px;
        height: 2.5px;
        background: var(--text);
        border-radius: 4px;
        transition: var(--transition);
    }
    .nav-toggle:hover {
        background: var(--primary-transparent);
        border-color: var(--primary);
    }
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    /* ===== Banner / Hero ===== */
    .category-hero {
        position: relative;
        padding: 80px 0 72px;
        background: var(--primary-dark);
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        overflow: hidden;
        min-height: 360px;
        display: flex;
        align-items: center;
    }
    .category-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(20, 40, 69, 0.88) 0%, rgba(30, 58, 95, 0.76) 100%);
        z-index: 1;
    }
    .category-hero .container {
        position: relative;
        z-index: 2;
        text-align: center;
    }
    .category-hero .hero-badge {
        display: inline-block;
        padding: 6px 20px;
        background: rgba(200, 149, 46, 0.2);
        border: 1px solid rgba(200, 149, 46, 0.35);
        border-radius: 30px;
        font-size: 13px;
        font-weight: 500;
        color: var(--secondary-light);
        margin-bottom: 20px;
        letter-spacing: 1px;
    }
    .category-hero h1 {
        font-size: 44px;
        font-weight: 800;
        color: var(--text-white);
        margin-bottom: 16px;
        letter-spacing: -0.5px;
    }
    .category-hero h1 span {
        color: var(--secondary-light);
    }
    .category-hero p {
        font-size: 18px;
        color: rgba(255, 255, 255, 0.85);
        max-width: 640px;
        margin: 0 auto 28px;
        line-height: 1.7;
    }
    .hero-search {
        display: flex;
        max-width: 520px;
        margin: 0 auto;
        background: rgba(255, 255, 255, 0.15);
        border-radius: 40px;
        padding: 4px;
        border: 1px solid rgba(255, 255, 255, 0.2);
        backdrop-filter: blur(4px);
    }
    .hero-search input {
        flex: 1;
        padding: 12px 20px;
        background: transparent;
        color: var(--text-white);
        font-size: 15px;
        border-radius: 40px 0 0 40px;
    }
    .hero-search input::placeholder {
        color: rgba(255, 255, 255, 0.6);
    }
    .hero-search button {
        padding: 10px 28px;
        background: var(--secondary);
        color: var(--text-white);
        font-weight: 600;
        font-size: 14px;
        border-radius: 30px;
        transition: var(--transition);
        white-space: nowrap;
    }
    .hero-search button:hover {
        background: var(--secondary-dark);
        transform: scale(1.02);
    }

    /* ===== 数据统计 ===== */
    .stats-section {
        padding: 48px 0;
        background: var(--bg-white);
        border-bottom: 1px solid var(--border-light);
    }
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 32px;
    }
    .stat-item {
        text-align: center;
        padding: 20px 12px;
    }
    .stat-item .stat-number {
        font-size: 36px;
        font-weight: 800;
        color: var(--primary);
        line-height: 1.2;
        letter-spacing: -1px;
    }
    .stat-item .stat-number .stat-suffix {
        font-size: 20px;
        color: var(--secondary);
    }
    .stat-item .stat-label {
        font-size: 15px;
        color: var(--text-light);
        margin-top: 6px;
        font-weight: 500;
    }

    /* ===== 筛选标签 ===== */
    .filter-section {
        padding: 40px 0 20px;
        background: var(--bg);
    }
    .filter-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }
    .filter-tags .tag {
        display: inline-block;
        padding: 8px 22px;
        font-size: 14px;
        font-weight: 500;
        color: var(--text-light);
        background: var(--bg-white);
        border: 1px solid var(--border);
        border-radius: 30px;
        cursor: pointer;
        transition: var(--transition);
        user-select: none;
    }
    .filter-tags .tag:hover {
        color: var(--primary);
        border-color: var(--primary);
        background: var(--primary-transparent);
    }
    .filter-tags .tag.active {
        color: var(--text-white);
        background: var(--primary);
        border-color: var(--primary);
        font-weight: 600;
    }

    /* ===== 文章网格 ===== */
    .articles-section {
        padding: 40px 0 60px;
        background: var(--bg);
    }
    .articles-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .article-card {
        background: var(--bg-card);
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: var(--transition);
        display: flex;
        flex-direction: column;
        border: 1px solid var(--border-light);
    }
    .article-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-hover);
        border-color: var(--border);
    }
    .article-card .card-img {
        position: relative;
        width: 100%;
        aspect-ratio: 16 / 10;
        overflow: hidden;
        background: var(--border-light);
    }
    .article-card .card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }
    .article-card:hover .card-img img {
        transform: scale(1.05);
    }
    .article-card .card-img .card-tag {
        position: absolute;
        top: 14px;
        left: 14px;
        padding: 4px 14px;
        font-size: 12px;
        font-weight: 600;
        color: var(--text-white);
        background: var(--secondary);
        border-radius: 20px;
        letter-spacing: 0.3px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
    }
    .article-card .card-body {
        padding: 22px 24px 24px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .article-card .card-body h3 {
        font-size: 18px;
        font-weight: 700;
        color: var(--text);
        margin-bottom: 10px;
        line-height: 1.4;
        transition: var(--transition);
    }
    .article-card:hover .card-body h3 {
        color: var(--primary);
    }
    .article-card .card-body p {
        font-size: 14px;
        color: var(--text-light);
        line-height: 1.7;
        margin-bottom: 16px;
        flex: 1;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .article-card .card-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: 13px;
        color: var(--text-lighter);
        border-top: 1px solid var(--border-light);
        padding-top: 14px;
        margin-top: auto;
    }
    .article-card .card-meta .meta-left {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .article-card .card-meta .meta-left i {
        font-size: 14px;
    }
    .article-card .card-meta .read-time {
        display: flex;
        align-items: center;
        gap: 4px;
    }

    /* ===== 分页 ===== */
    .pagination-section {
        padding: 16px 0 56px;
        background: var(--bg);
    }
    .pagination {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 8px;
    }
    .pagination a,
    .pagination span {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-width: 40px;
        height: 40px;
        padding: 0 12px;
        font-size: 14px;
        font-weight: 500;
        color: var(--text-light);
        background: var(--bg-white);
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        transition: var(--transition);
        text-decoration: none;
    }
    .pagination a:hover {
        color: var(--primary);
        border-color: var(--primary);
        background: var(--primary-transparent);
    }
    .pagination a.active {
        color: var(--text-white);
        background: var(--primary);
        border-color: var(--primary);
        font-weight: 600;
    }
    .pagination .prev,
    .pagination .next {
        padding: 0 18px;
        gap: 6px;
        display: inline-flex;
        align-items: center;
    }
    .pagination .disabled {
        opacity: 0.4;
        pointer-events: none;
        cursor: default;
    }

    /* ===== FAQ ===== */
    .faq-section {
        padding: 60px 0;
        background: var(--bg-white);
    }
    .faq-section .section-title {
        text-align: center;
        margin-bottom: 44px;
    }
    .faq-section .section-title h2 {
        font-size: 32px;
        font-weight: 800;
        color: var(--text);
        margin-bottom: 10px;
    }
    .faq-section .section-title p {
        font-size: 16px;
        color: var(--text-light);
        max-width: 520px;
        margin: 0 auto;
    }
    .faq-list {
        max-width: 780px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .faq-item {
        background: var(--bg);
        border: 1px solid var(--border-light);
        border-radius: var(--radius);
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:hover {
        border-color: var(--border);
    }
    .faq-item .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px 24px;
        font-size: 16px;
        font-weight: 600;
        color: var(--text);
        cursor: pointer;
        transition: var(--transition);
        gap: 16px;
        user-select: none;
    }
    .faq-item .faq-question:hover {
        color: var(--primary);
    }
    .faq-item .faq-question .faq-icon {
        flex-shrink: 0;
        width: 28px;
        height: 28px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--primary-transparent);
        border-radius: 50%;
        font-size: 18px;
        font-weight: 300;
        transition: var(--transition);
        color: var(--primary);
    }
    .faq-item.active .faq-question .faq-icon {
        transform: rotate(45deg);
        background: var(--primary);
        color: var(--text-white);
    }
    .faq-item .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease, padding 0.3s ease;
        padding: 0 24px;
        font-size: 15px;
        color: var(--text-light);
        line-height: 1.8;
    }
    .faq-item.active .faq-answer {
        max-height: 300px;
        padding: 0 24px 20px;
    }

    /* ===== CTA ===== */
    .cta-section {
        padding: 60px 0;
        background: var(--primary);
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        position: relative;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(30, 58, 95, 0.92) 0%, rgba(20, 40, 69, 0.88) 100%);
        z-index: 1;
    }
    .cta-section .container {
        position: relative;
        z-index: 2;
        text-align: center;
    }
    .cta-section h2 {
        font-size: 34px;
        font-weight: 800;
        color: var(--text-white);
        margin-bottom: 12px;
    }
    .cta-section p {
        font-size: 17px;
        color: rgba(255, 255, 255, 0.8);
        max-width: 560px;
        margin: 0 auto 28px;
        line-height: 1.7;
    }
    .cta-buttons {
        display: flex;
        justify-content: center;
        gap: 16px;
        flex-wrap: wrap;
    }
    .btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 14px 36px;
        font-size: 16px;
        font-weight: 600;
        color: var(--text-white);
        background: var(--secondary);
        border-radius: 40px;
        transition: var(--transition);
        text-decoration: none;
        box-shadow: 0 4px 20px rgba(200, 149, 46, 0.35);
    }
    .btn-primary:hover {
        background: var(--secondary-dark);
        transform: translateY(-2px);
        box-shadow: 0 8px 30px rgba(200, 149, 46, 0.45);
        color: var(--text-white);
    }
    .btn-outline-light {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 14px 36px;
        font-size: 16px;
        font-weight: 600;
        color: var(--text-white);
        background: transparent;
        border: 2px solid rgba(255, 255, 255, 0.5);
        border-radius: 40px;
        transition: var(--transition);
        text-decoration: none;
    }
    .btn-outline-light:hover {
        background: rgba(255, 255, 255, 0.12);
        border-color: var(--text-white);
        color: var(--text-white);
        transform: translateY(-2px);
    }

    /* ===== 页脚 ===== */
    .footer {
        background: var(--primary-dark);
        color: rgba(255, 255, 255, 0.8);
        padding: 56px 0 0;
    }
    .footer .footer-grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .footer .footer-brand .nav-logo {
        color: var(--text-white);
        margin-bottom: 16px;
    }
    .footer .footer-brand .nav-logo .logo-icon {
        background: var(--secondary);
        color: var(--primary-dark);
    }
    .footer .footer-brand p {
        font-size: 14px;
        line-height: 1.8;
        color: rgba(255, 255, 255, 0.65);
        max-width: 300px;
    }
    .footer .footer-col h4 {
        font-size: 16px;
        font-weight: 700;
        color: var(--text-white);
        margin-bottom: 18px;
        letter-spacing: 0.5px;
    }
    .footer .footer-col ul li {
        margin-bottom: 10px;
    }
    .footer .footer-col ul li a {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.65);
        transition: var(--transition);
    }
    .footer .footer-col ul li a:hover {
        color: var(--secondary-light);
        padding-left: 4px;
    }
    .footer .footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 0;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.5);
        flex-wrap: wrap;
        gap: 8px;
    }

    /* ===== 通用组件 ===== */
    .section-title {
        text-align: center;
        margin-bottom: 40px;
    }
    .section-title h2 {
        font-size: 32px;
        font-weight: 800;
        color: var(--text);
        margin-bottom: 10px;
    }
    .section-title p {
        font-size: 16px;
        color: var(--text-light);
        max-width: 560px;
        margin: 0 auto;
    }

    /* ===== 面包屑 ===== */
    .breadcrumb-bar {
        padding: 18px 0 4px;
        background: var(--bg);
    }
    .breadcrumb-bar .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-lighter);
    }
    .breadcrumb-bar .breadcrumb a {
        color: var(--text-light);
    }
    .breadcrumb-bar .breadcrumb a:hover {
        color: var(--primary);
    }
    .breadcrumb-bar .breadcrumb .sep {
        color: var(--text-lighter);
        font-size: 12px;
    }
    .breadcrumb-bar .breadcrumb .current {
        color: var(--text);
        font-weight: 500;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .articles-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .footer .footer-grid {
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 32px;
        }
        .stats-grid {
            gap: 20px;
        }
        .stat-item .stat-number {
            font-size: 30px;
        }
    }

    @media (max-width: 768px) {
        :root {
            --header-height: 64px;
        }
        .nav-dock {
            padding: 0 16px;
            height: 50px;
            border-radius: 30px;
        }
        .nav-links {
            display: none;
            position: absolute;
            top: calc(100% + 12px);
            left: 16px;
            right: 16px;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(16px);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 12px 8px;
            flex-direction: column;
            gap: 4px;
            border: 1px solid var(--border-light);
        }
        .nav-links.open {
            display: flex;
        }
        .nav-links a {
            width: 100%;
            justify-content: center;
            padding: 12px 18px;
            font-size: 16px;
        }
        .nav-toggle {
            display: flex;
        }
        .btn-nav {
            padding: 6px 18px;
            font-size: 13px;
        }

        .category-hero {
            padding: 56px 0 48px;
            min-height: 300px;
        }
        .category-hero h1 {
            font-size: 30px;
        }
        .category-hero p {
            font-size: 16px;
        }
        .hero-search {
            flex-direction: column;
            background: transparent;
            border: none;
            gap: 10px;
            padding: 0;
        }
        .hero-search input {
            background: rgba(255, 255, 255, 0.15);
            border-radius: 30px;
            text-align: center;
            padding: 12px 18px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .hero-search button {
            border-radius: 30px;
            padding: 12px 24px;
        }

        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .stat-item {
            padding: 12px 8px;
        }
        .stat-item .stat-number {
            font-size: 28px;
        }

        .articles-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .article-card .card-body {
            padding: 18px 20px 20px;
        }
        .article-card .card-body h3 {
            font-size: 17px;
        }

        .faq-section .section-title h2 {
            font-size: 26px;
        }
        .faq-item .faq-question {
            padding: 14px 18px;
            font-size: 15px;
        }
        .faq-item .faq-answer {
            font-size: 14px;
        }

        .cta-section h2 {
            font-size: 26px;
        }
        .btn-primary,
        .btn-outline-light {
            padding: 12px 28px;
            font-size: 15px;
        }

        .footer .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .footer .footer-brand {
            grid-column: 1 / -1;
        }
        .footer .footer-bottom {
            flex-direction: column;
            text-align: center;
            gap: 6px;
        }

        .pagination a,
        .pagination span {
            min-width: 36px;
            height: 36px;
            font-size: 13px;
            padding: 0 10px;
        }
        .pagination .prev,
        .pagination .next {
            padding: 0 14px;
        }

        .filter-tags .tag {
            padding: 6px 16px;
            font-size: 13px;
        }
    }

    @media (max-width: 520px) {
        .category-hero h1 {
            font-size: 24px;
        }
        .category-hero p {
            font-size: 14px;
        }
        .stats-grid {
            gap: 12px;
        }
        .stat-item .stat-number {
            font-size: 24px;
        }
        .stat-item .stat-label {
            font-size: 13px;
        }
        .section-title h2 {
            font-size: 24px;
        }
        .footer .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .nav-logo {
            font-size: 17px;
        }
        .nav-logo .logo-icon {
            width: 30px;
            height: 30px;
            font-size: 16px;
        }
        .faq-section {
            padding: 40px 0;
        }
        .cta-section {
            padding: 40px 0;
        }
        .articles-section {
            padding: 24px 0 40px;
        }
    }

    /* ===== 平滑过渡 & 辅助 ===== */
    .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        border: 0;
    }

    /* 图标字体 fallback 使用 unicode */
    .icon-clock::before {
        content: '🕐';
        font-size: 14px;
    }
    .icon-calendar::before {
        content: '📅';
        font-size: 13px;
    }