/* roulang page: index */
:root {
        --primary: #2563eb;
        --primary-dark: #1e40af;
        --secondary: #06b6d4;
        --accent: #10b981;
        --accent-light: #ecfdf5;
        --bg: #f8fafc;
        --white: #ffffff;
        --text: #0f172a;
        --text-weak: #64748b;
        --border: #e2e8f0;
        --radius: 18px;
        --radius-sm: 12px;
        --shadow: 0 4px 24px rgba(15, 23, 42, .06);
        --shadow-lg: 0 16px 48px rgba(15, 23, 42, .10);
        --max-w: 1200px;
    }

    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
        background: var(--bg);
        color: var(--text);
        line-height: 1.7;
        font-size: 16px;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: var(--transition);
    }
    a:hover {
        color: var(--primary-dark);
    }
    img {
        max-width: 100%;
        display: block;
    }
    ul {
        list-style: none;
    }
    button,
    input,
    textarea {
        font-family: inherit;
        font-size: inherit;
        border: none;
        outline: none;
    }
    .container {
        max-width: var(--max-w);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* Topbar */
    .topbar {
        background: linear-gradient(90deg, var(--primary-dark), var(--primary));
        color: rgba(255, 255, 255, .92);
        font-size: 13px;
        padding: 8px 0;
    }
    .topbar-inner {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
    }
    .topbar-inner span {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .topbar-inner i {
        font-size: 14px;
    }
    .topbar-actions a {
        color: #fff;
        margin-left: 16px;
        font-weight: 500;
        border: 1px solid rgba(255, 255, 255, .5);
        border-radius: 20px;
        padding: 2px 12px;
        font-size: 12px;
        transition: all .3s;
    }
    .topbar-actions a:hover {
        background: rgba(255, 255, 255, .15);
        border-color: #fff;
    }

    /* Navbar */
    .main-nav {
        background: var(--white);
        border-bottom: 1px solid var(--border);
        position: sticky;
        top: 0;
        z-index: 999;
        box-shadow: 0 2px 10px rgba(0, 0, 0, .03);
    }
    .nav-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 76px;
        gap: 24px;
    }
    .brand {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 22px;
        font-weight: 800;
        color: var(--text);
        letter-spacing: 0.5px;
    }
    .brand-icon {
        width: 40px;
        height: 40px;
        border-radius: 12px;
        background: linear-gradient(135deg, var(--primary), var(--secondary));
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 18px;
        box-shadow: 0 6px 16px rgba(37, 99, 235, .3);
    }
    .brand-text {
        font-size: 20px;
        font-weight: 800;
        color: var(--text);
        white-space: nowrap;
    }
    .nav-links {
        display: flex;
        align-items: center;
        gap: 4px;
    }
    .nav-link {
        padding: 10px 16px;
        border-radius: 10px;
        font-weight: 500;
        color: var(--text);
        font-size: 15px;
        transition: all .3s;
    }
    .nav-link:hover {
        background: var(--bg);
        color: var(--primary);
    }
    .nav-link.active {
        background: var(--primary);
        color: #fff;
    }
    .nav-cta {
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 24px;
        border-radius: 12px;
        font-weight: 600;
        font-size: 15px;
        transition: all .3s;
        border: 2px solid transparent;
        cursor: pointer;
    }
    .btn-primary {
        background: var(--primary);
        color: #fff;
    }
    .btn-primary:hover {
        background: var(--primary-dark);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 10px 24px rgba(37, 99, 235, .3);
    }
    .btn-outline {
        border-color: rgba(255, 255, 255, .7);
        color: #fff;
        background: transparent;
    }
    .btn-outline:hover {
        background: rgba(255, 255, 255, .15);
        color: #fff;
    }
    .btn-light {
        background: var(--white);
        color: var(--primary);
    }
    .btn-light:hover {
        background: var(--bg);
        transform: translateY(-2px);
        box-shadow: 0 10px 24px rgba(0, 0, 0, .08);
    }
    .nav-toggle {
        display: none;
        background: none;
        flex-direction: column;
        gap: 5px;
        padding: 8px;
        border-radius: 8px;
        cursor: pointer;
    }
    .nav-toggle span {
        width: 26px;
        height: 3px;
        background: var(--text);
        border-radius: 3px;
        transition: var(--transition);
    }

    /* Hero */
    .hero {
        position: relative;
        min-height: 600px;
        display: flex;
        align-items: center;
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        color: #fff;
        padding: 100px 0;
    }
    .hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(90deg, rgba(15, 23, 42, .85), rgba(15, 23, 42, .55) 60%, rgba(15, 23, 42, .20));
    }
    .hero-content {
        position: relative;
        z-index: 2;
        max-width: 700px;
    }
    .hero-badge {
        display: inline-block;
        background: rgba(255, 255, 255, .15);
        border: 1px solid rgba(255, 255, 255, .3);
        border-radius: 30px;
        padding: 6px 18px;
        font-size: 13px;
        font-weight: 500;
        margin-bottom: 24px;
        backdrop-filter: blur(6px);
    }
    .hero h1 {
        font-size: 52px;
        font-weight: 800;
        line-height: 1.2;
        margin-bottom: 20px;
        letter-spacing: 1px;
    }
    .hero h1 span {
        color: #60a5fa;
    }
    .hero p {
        font-size: 18px;
        line-height: 1.8;
        color: rgba(255, 255, 255, .85);
        margin-bottom: 32px;
    }
    .hero-btns {
        display: flex;
        gap: 16px;
        flex-wrap: wrap;
    }
    .hero-metrics {
        display: flex;
        gap: 40px;
        margin-top: 48px;
        padding-top: 32px;
        border-top: 1px solid rgba(255, 255, 255, .2);
    }
    .hero-metrics div {
        text-align: center;
        flex: 1;
    }
    .hero-metrics strong {
        display: block;
        font-size: 30px;
        font-weight: 800;
    }
    .hero-metrics span {
        font-size: 13px;
        color: rgba(255, 255, 255, .7);
    }

    /* Section */
    .section {
        padding: 88px 0;
    }
    .section-alt {
        background: var(--white);
    }
    .section-head {
        text-align: center;
        max-width: 680px;
        margin: 0 auto 56px;
    }
    .section-tag {
        display: inline-block;
        background: var(--accent-light);
        color: var(--accent);
        border-radius: 30px;
        padding: 4px 16px;
        font-size: 13px;
        font-weight: 600;
        margin-bottom: 12px;
    }
    .section-head h2 {
        font-size: 36px;
        font-weight: 800;
        margin-bottom: 12px;
        color: var(--text);
    }
    .section-head p {
        color: var(--text-weak);
        font-size: 16px;
        line-height: 1.8;
    }

    /* Cards */
    .grid-2 {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
    .grid-3 {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .grid-4 {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .card {
        background: var(--white);
        border-radius: var(--radius);
        padding: 28px;
        box-shadow: var(--shadow);
        transition: var(--transition);
        border: 1px solid transparent;
    }
    .card:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-6px);
        border-color: #dbeafe;
    }
    .card-icon {
        width: 56px;
        height: 56px;
        border-radius: 14px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 24px;
        margin-bottom: 20px;
    }
    .card h3 {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 10px;
    }
    .card p {
        color: var(--text-weak);
        font-size: 14px;
        line-height: 1.7;
    }
    .icon-blue {
        background: #eff6ff;
        color: var(--primary);
    }
    .icon-green {
        background: var(--accent-light);
        color: var(--accent);
    }
    .icon-cyan {
        background: #ecfeff;
        color: var(--secondary);
    }
    .icon-orange {
        background: #fff7ed;
        color: #f59e0b;
    }

    /* Category cards */
    .cat-cards {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
    .cat-card {
        position: relative;
        border-radius: 20px;
        overflow: hidden;
        min-height: 320px;
        display: flex;
        align-items: flex-end;
        box-shadow: var(--shadow);
        transition: var(--transition);
    }
    .cat-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-lg);
    }
    .cat-card img {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .cat-card::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 30%, rgba(15, 23, 42, .85));
    }
    .cat-card-body {
        position: relative;
        z-index: 2;
        padding: 32px;
        color: #fff;
        width: 100%;
    }
    .cat-card-body h3 {
        font-size: 24px;
        font-weight: 800;
        margin-bottom: 8px;
    }
    .cat-card-body p {
        font-size: 14px;
        color: rgba(255, 255, 255, .8);
        margin-bottom: 16px;
    }
    .cat-card-link {
        color: #fff;
        font-weight: 600;
        font-size: 14px;
        border-bottom: 2px solid rgba(255, 255, 255, .5);
        padding-bottom: 2px;
    }

    /* News cards */
    .news-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .news-card {
        background: var(--white);
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: var(--transition);
        display: flex;
        flex-direction: column;
    }
    .news-card:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-6px);
    }
    .news-thumb {
        position: relative;
        height: 200px;
        overflow: hidden;
    }
    .news-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: var(--transition);
    }
    .news-card:hover .news-thumb img {
        transform: scale(1.06);
    }
    .news-tag {
        position: absolute;
        top: 14px;
        left: 14px;
        background: var(--primary);
        color: #fff;
        font-size: 12px;
        padding: 4px 12px;
        border-radius: 20px;
        font-weight: 600;
    }
    .news-body {
        padding: 22px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .news-body h3 {
        font-size: 17px;
        font-weight: 700;
        margin-bottom: 8px;
        line-height: 1.4;
    }
    .news-body h3 a {
        color: var(--text);
    }
    .news-body h3 a:hover {
        color: var(--primary);
    }
    .news-body p {
        color: var(--text-weak);
        font-size: 14px;
        flex: 1;
        margin-bottom: 14px;
    }
    .news-meta {
        display: flex;
        gap: 16px;
        font-size: 13px;
        color: #94a3b8;
        border-top: 1px solid var(--border);
        padding-top: 14px;
    }

    /* Stats */
    .stats-section {
        background: linear-gradient(135deg, var(--primary-dark), var(--primary));
        color: #fff;
    }
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 32px;
        text-align: center;
    }
    .stat-item strong {
        font-size: 48px;
        font-weight: 800;
        display: block;
        line-height: 1.2;
        margin-bottom: 6px;
    }
    .stat-item span {
        font-size: 15px;
        color: rgba(255, 255, 255, .8);
    }
    .stat-item i {
        font-size: 30px;
        margin-bottom: 12px;
        opacity: .9;
    }
    .stat-item {
        padding: 24px;
        border-radius: 16px;
        background: rgba(255, 255, 255, .06);
        border: 1px solid rgba(255, 255, 255, .12);
    }

    /* Features */
    .feature-card {
        background: var(--white);
        border-radius: var(--radius);
        padding: 28px;
        box-shadow: var(--shadow);
        transition: var(--transition);
        border-left: 4px solid var(--primary);
    }
    .feature-card:hover {
        box-shadow: var(--shadow-lg);
        transform: translateX(6px);
    }
    .feature-card h3 {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 8px;
    }
    .feature-card p {
        color: var(--text-weak);
        font-size: 14px;
        line-height: 1.7;
    }

    /* Steps */
    .steps {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        counter-reset: step;
    }
    .step-card {
        background: var(--white);
        border-radius: var(--radius);
        padding: 32px 24px;
        text-align: center;
        box-shadow: var(--shadow);
        transition: var(--transition);
        position: relative;
    }
    .step-card::before {
        counter-increment: step;
        content: counter(step);
        position: absolute;
        top: 16px;
        right: 20px;
        font-size: 56px;
        font-weight: 800;
        color: #e0e7ff;
        line-height: 1;
    }
    .step-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-lg);
    }
    .step-icon {
        width: 64px;
        height: 64px;
        margin: 0 auto 20px;
        border-radius: 50%;
        background: var(--primary);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 26px;
        position: relative;
        z-index: 1;
    }
    .step-card h3 {
        font-size: 17px;
        font-weight: 700;
        margin-bottom: 10px;
    }
    .step-card p {
        color: var(--text-weak);
        font-size: 14px;
    }

    /* FAQ */
    .faq-list {
        max-width: 820px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }
    .faq-item {
        background: var(--white);
        border-radius: var(--radius-sm);
        box-shadow: var(--shadow);
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item summary {
        padding: 20px 24px;
        font-weight: 600;
        font-size: 16px;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        list-style: none;
    }
    .faq-item summary::-webkit-details-marker {
        display: none;
    }
    .faq-item summary::after {
        content: '\f078';
        font-family: 'Font Awesome 6 Free';
        font-weight: 900;
        color: var(--primary);
        transition: transform .3s;
        font-size: 14px;
    }
    .faq-item[open] summary::after {
        transform: rotate(180deg);
    }
    .faq-item p {
        padding: 0 24px 20px;
        color: var(--text-weak);
        font-size: 15px;
        line-height: 1.8;
    }
    .faq-item:hover {
        border-color: #bfdbfe;
    }

    /* CTA */
    .cta-section {
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        position: relative;
        padding: 100px 0;
        text-align: center;
        color: #fff;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: rgba(15, 23, 42, .78);
    }
    .cta-content {
        position: relative;
        z-index: 2;
        max-width: 680px;
        margin: 0 auto;
    }
    .cta-content h2 {
        font-size: 38px;
        font-weight: 800;
        margin-bottom: 14px;
    }
    .cta-content p {
        font-size: 17px;
        color: rgba(255, 255, 255, .85);
        margin-bottom: 32px;
    }
    .cta-btns {
        display: flex;
        justify-content: center;
        gap: 16px;
        flex-wrap: wrap;
    }

    /* Footer */
    .site-footer {
        background: #0f172a;
        color: rgba(255, 255, 255, .8);
        padding: 64px 0 24px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 48px;
    }
    .footer-brand h3 {
        font-size: 24px;
        font-weight: 800;
        color: #fff;
        margin-bottom: 12px;
    }
    .footer-brand p {
        font-size: 14px;
        line-height: 1.8;
        color: rgba(255, 255, 255, .7);
        margin-bottom: 20px;
    }
    .footer-links h4 {
        color: #fff;
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 16px;
    }
    .footer-links a {
        display: block;
        color: rgba(255, 255, 255, .7);
        padding: 6px 0;
        font-size: 14px;
        transition: var(--transition);
    }
    .footer-links a:hover {
        color: #fff;
        padding-left: 6px;
    }
    .footer-contact a {
        color: rgba(255, 255, 255, .7);
        display: block;
        padding: 6px 0;
    }
    .footer-contact a:hover {
        color: #fff;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, .1);
        padding-top: 24px;
        text-align: center;
        font-size: 13px;
        color: rgba(255, 255, 255, .5);
    }
    .footer-bottom a {
        color: rgba(255, 255, 255, .7);
    }

    /* Responsive */
    @media(max-width:1024px) {
        .grid-4 {
            grid-template-columns: repeat(2, 1fr);
        }
        .steps {
            grid-template-columns: repeat(2, 1fr);
        }
        .news-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
        .hero h1 {
            font-size: 42px;
        }
    }
    @media(max-width:768px) {
        .nav-links {
            display: none;
            position: fixed;
            top: 74px;
            left: 0;
            right: 0;
            background: #fff;
            flex-direction: column;
            padding: 20px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, .08);
            gap: 10px;
            max-height: calc(100vh - 74px);
            overflow-y: auto;
        }
        .nav-links.open {
            display: flex;
        }
        .nav-toggle {
            display: flex;
        }
        .nav-cta .btn {
            display: none;
        }
        .hero {
            min-height: auto;
            padding: 70px 0;
        }
        .hero h1 {
            font-size: 32px;
        }
        .hero p {
            font-size: 16px;
        }
        .hero-metrics {
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-metrics div {
            min-width: 30%;
        }
        .grid-2,
        .cat-cards {
            grid-template-columns: 1fr;
        }
        .grid-3 {
            grid-template-columns: 1fr;
        }
        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .step-card {
            padding: 24px 16px;
        }
        .cta-section {
            padding: 60px 0;
        }
        .cta-content h2 {
            font-size: 28px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
        }
        .section {
            padding: 56px 0;
        }
        .section-head h2 {
            font-size: 28px;
        }
    }
    @media(max-width:520px) {
        .topbar-inner {
            justify-content: center;
        }
        .topbar-actions {
            display: none;
        }
        .stats-grid {
            grid-template-columns: 1fr;
        }
        .steps {
            grid-template-columns: 1fr;
        }
        .news-grid {
            grid-template-columns: 1fr;
        }
        .nav-inner {
            height: 64px;
        }
        .brand-text {
            font-size: 18px;
        }
        .brand-icon {
            width: 34px;
            height: 34px;
            font-size: 15px;
        }
    }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e3a8a;
            --primary-light: #3b82f6;
            --accent: #f59e0b;
            --bg: #f8fafc;
            --bg-alt: #ffffff;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(15, 23, 42, .08);
            --shadow-lg: 0 12px 36px rgba(15, 23, 42, .12);
            --container: 1200px;
            --transition: all .3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
            outline: none;
            border: none;
        }

        ul {
            list-style: none;
        }

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

        /* ===== 顶部信息条 ===== */
        .topbar {
            background: var(--bg-dark);
            color: #cbd5e1;
            font-size: 13px;
            padding: 8px 0;
        }

        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .topbar span i {
            color: var(--accent);
            margin-right: 6px;
        }

        .topbar a {
            color: #e2e8f0;
            border-bottom: 1px dotted rgba(255, 255, 255, .4);
        }

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

        /* ===== 主导航 ===== */
        .main-nav {
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(15, 23, 42, .04);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 20px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            font-size: 20px;
            color: var(--primary);
            letter-spacing: .5px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(30, 58, 138, .3);
        }

        .brand-text {
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            display: inline-block;
            padding: 10px 18px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            position: relative;
        }

        .nav-link:hover {
            color: var(--primary);
            background: #f1f5f9;
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 18px;
            right: 18px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }

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

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            cursor: pointer;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
        }

        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
            justify-content: center;
            white-space: nowrap;
        }

        .btn i {
            font-size: 14px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(30, 58, 138, .25);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(59, 130, 246, .3);
        }

        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30, 58, 138, .2);
        }

        .btn-accent {
            background: var(--accent);
            color: #0f172a;
        }

        .btn-accent:hover {
            background: #fbbf24;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, .3);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(59, 130, 246, .5);
            outline-offset: 2px;
        }

        /* ===== 页面 Hero ===== */
        .page-hero {
            position: relative;
            padding: 96px 0 88px;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat, var(--bg-dark);
            color: #fff;
            text-align: center;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, .88), rgba(30, 58, 138, .75));
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
        }

        .page-hero h1 {
            font-size: 46px;
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .page-hero p {
            font-size: 18px;
            max-width: 640px;
            margin: 0 auto;
            color: #dbeafe;
            line-height: 1.8;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .15);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, .25);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 13px;
            color: #fef3c7;
            margin-bottom: 22px;
        }

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

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

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

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #eff6ff;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 14px;
        }

        .section-tag i {
            color: var(--accent);
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-head p {
            color: var(--text-light);
            font-size: 16px;
            line-height: 1.8;
        }

        /* ===== 玩法体系卡片 ===== */
        .overview-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .overview-card {
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .overview-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

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

        .overview-card:hover::before {
            opacity: 1;
        }

        .overview-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: linear-gradient(135deg, #eff6ff, #dbeafe);
            color: var(--primary);
            font-size: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }

        .overview-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .overview-card p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.75;
        }

        .overview-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
        }

        .overview-card .card-link:hover {
            color: var(--accent);
            gap: 10px;
        }

        /* ===== 步骤流程 ===== */
        .steps-section {
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat, var(--bg-dark);
            position: relative;
            color: #fff;
        }

        .steps-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 23, 42, .9);
        }

        .steps-section .container {
            position: relative;
            z-index: 1;
        }

        .steps-section .section-tag {
            background: rgba(255, 255, 255, .12);
            color: #fef3c7;
        }

        .steps-section .section-head h2 {
            color: #fff;
        }

        .steps-section .section-head p {
            color: #cbd5e1;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .step-item {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            backdrop-filter: blur(6px);
            counter-increment: step;
            transition: var(--transition);
        }

        .step-item:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-4px);
            border-color: rgba(245, 158, 11, .5);
        }

        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), #fbbf24);
            color: #0f172a;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 6px 16px rgba(245, 158, 11, .3);
        }

        .step-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .step-item p {
            font-size: 13px;
            color: #cbd5e1;
            line-height: 1.7;
        }

        /* ===== 精选攻略 ===== */
        .guides-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .guide-card {
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .guide-cover {
            height: 190px;
            background: linear-gradient(135deg, #dbeafe, #eff6ff);
            position: relative;
            overflow: hidden;
        }

        .guide-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .guide-card:hover .guide-cover img {
            transform: scale(1.05);
        }

        .guide-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, .92);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            box-shadow: 0 2px 8px rgba(15, 23, 42, .15);
        }

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

        .guide-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .guide-body h3 a:hover {
            color: var(--primary);
        }

        .guide-body p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.75;
            flex: 1;
        }

        .guide-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 18px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-light);
        }

        .guide-meta a {
            color: var(--primary);
            font-weight: 600;
        }

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

        /* ===== 规则须知 ===== */
        .rules-section {
            background: var(--bg-alt);
        }

        .rules-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .rule-box {
            display: flex;
            gap: 20px;
            padding: 28px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: var(--transition);
            background: var(--bg);
        }

        .rule-box:hover {
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
            transform: translateY(-2px);
        }

        .rule-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            background: #eff6ff;
            color: var(--primary);
        }

        .rule-box:nth-child(2) .rule-icon {
            background: #fef3c7;
            color: var(--accent);
        }

        .rule-box:nth-child(3) .rule-icon {
            background: #dbeafe;
            color: var(--primary-light);
        }

        .rule-box:nth-child(4) .rule-icon {
            background: #fee2e2;
            color: #ef4444;
        }

        .rule-box h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .rule-box p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.75;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item.open {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
        }

        .faq-question {
            width: 100%;
            padding: 20px 24px;
            background: transparent;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .faq-question i {
            color: var(--primary);
            transition: transform .3s ease;
            font-size: 14px;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .3s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.8;
        }

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

        /* ===== CTA 区块 ===== */
        .cta-section {
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat, var(--bg-dark);
            position: relative;
            color: #fff;
            padding: 80px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 58, 138, .92), rgba(15, 23, 42, .85));
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-section p {
            color: #dbeafe;
            max-width: 560px;
            margin: 0 auto 30px;
            font-size: 16px;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .cta-note {
            margin-top: 18px;
            font-size: 13px;
            color: #94a3b8;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: #cbd5e1;
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: #94a3b8;
            margin-bottom: 18px;
            max-width: 320px;
        }

        .footer-brand a {
            color: #cbd5e1;
        }

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

        .footer-links h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-links a {
            display: block;
            padding: 5px 0;
            color: #94a3b8;
            font-size: 14px;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-contact a {
            color: #94a3b8;
        }

        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: #94a3b8;
        }

        .footer-bottom a {
            color: #e2e8f0;
        }

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

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

        @media (max-width:768px) {
            .container {
                padding: 0 18px;
            }
            .topbar .container {
                flex-direction: column;
                gap: 4px;
                text-align: center;
            }
            .nav-inner {
                height: 64px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-alt);
                border-bottom: 1px solid var(--border);
                flex-direction: column;
                padding: 12px 18px;
                gap: 4px;
                box-shadow: 0 12px 24px rgba(15, 23, 42, .08);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li {
                width: 100%;
            }
            .nav-link {
                display: block;
                padding: 12px 16px;
                border-radius: 8px;
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-link.active {
                background: #eff6ff;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta .btn {
                display: none;
            }
            .page-hero {
                padding: 72px 0 64px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .page-hero p {
                font-size: 15px;
            }
            .section {
                padding: 56px 0;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .overview-grid,
            .guides-grid,
            .rules-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width:520px) {
            .brand-text {
                font-size: 17px;
            }
            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero p {
                font-size: 14px;
            }
            .hero-badge {
                font-size: 12px;
                padding: 5px 14px;
            }
            .overview-card {
                padding: 28px 20px;
            }
            .rule-box {
                flex-direction: column;
                gap: 14px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .cta-buttons .btn {
                width: 100%;
            }
            .footer-bottom {
                font-size: 12px;
                padding: 20px 12px;
            }
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 10px;
        }
        ::-webkit-scrollbar-track {
            background: #f1f5f9;
        }
        ::-webkit-scrollbar-thumb {
            background: #cbd5e1;
            border-radius: 5px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary-light);
        }

        /* ===== 焦点可访问性 ===== */
        a:focus-visible,
        .faq-question:focus-visible {
            outline: 3px solid rgba(59, 130, 246, .5);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: article */
:root {
            --primary: #2d5dfc;
            --primary-dark: #1e3a8a;
            --primary-light: #e8effe;
            --accent: #f5a623;
            --accent-light: #fff4e0;
            --bg: #f5f7fb;
            --surface: #ffffff;
            --text: #1a2433;
            --text-muted: #6d7a90;
            --border: #e6ebf2;
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 2px 12px rgba(26, 36, 51, .06);
            --shadow: 0 10px 30px rgba(26, 36, 51, .1);
            --shadow-lg: 0 24px 60px rgba(26, 36, 51, .16);
            --header-h: 72px;
            --topbar-h: 40px;
            --container: 1200px;
            --transition: all .3s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-wrapper {
            overflow: hidden;
        }

        /* ===== topbar ===== */
        .topbar {
            background: var(--primary-dark);
            color: #fff;
            height: var(--topbar-h);
            display: flex;
            align-items: center;
            font-size: 13px;
        }
        .topbar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            width: 100%;
        }
        .topbar-left span,
        .topbar-right a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .topbar-right a {
            color: rgba(255, 255, 255, .85);
        }
        .topbar-right a:hover {
            color: #fff;
        }
        .topbar-right .dot {
            opacity: .4;
            margin: 0 4px;
        }

        /* ===== header / nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--surface);
            box-shadow: var(--shadow-sm);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            gap: 24px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: 0 6px 18px rgba(45, 93, 252, .3);
        }
        .brand-text {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: .5px;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            gap: 6px;
            list-style: none;
            align-items: center;
        }
        .nav-link {
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            color: var(--text);
            font-size: 15px;
            transition: var(--transition);
        }
        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(45, 93, 252, .3);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            line-height: 1.2;
            transition: var(--transition);
            border: none;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(45, 93, 252, .25);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(30, 58, 138, .32);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .btn-soft {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .btn-soft:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-light {
            background: #fff;
            color: var(--primary-dark);
        }
        .btn-light:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, .16);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, .7);
        }
        .btn-outline-light:hover {
            background: #fff;
            color: var(--primary-dark);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: var(--bg);
            border-radius: var(--radius-sm);
        }
        .nav-toggle span {
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }

        /* ===== page banner ===== */
        .page-banner {
            background-size: cover;
            background-position: center;
            padding: 100px 0 110px;
            position: relative;
            color: #fff;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 24, 51, .9), rgba(30, 58, 138, .74));
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            margin-bottom: 28px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, .78);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .sep {
            opacity: .45;
        }
        .breadcrumb span:last-child {
            color: rgba(255, 255, 255, .95);
            max-width: 400px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .post-title {
            font-size: clamp(28px, 4vw, 44px);
            line-height: 1.35;
            font-weight: 800;
            max-width: 960px;
            margin-bottom: 22px;
            color: #fff;
            letter-spacing: .5px;
        }
        .post-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            font-size: 14px;
            color: rgba(255, 255, 255, .85);
            align-items: center;
        }
        .post-meta span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }
        .post-meta .divider {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, .3);
        }

        /* ===== post layout ===== */
        .post-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 340px;
            gap: 36px;
            padding: 50px 0 70px;
            align-items: start;
        }
        .post-main {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 52px 56px;
            box-shadow: var(--shadow-sm);
            min-width: 0;
            border: 1px solid var(--border);
        }
        .post-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 112px;
        }
        .side-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .side-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
            position: relative;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .side-card h3 i {
            color: var(--primary);
        }
        .side-card h3::after {
            content: '';
            position: absolute;
            width: 32px;
            height: 2px;
            background: var(--primary);
            bottom: -2px;
            left: 0;
            border-radius: 2px;
        }
        .side-nav {
            list-style: none;
        }
        .side-nav li {
            margin-bottom: 4px;
        }
        .side-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            color: var(--text);
            font-weight: 500;
            font-size: 14px;
            transition: var(--transition);
        }
        .side-nav a:hover,
        .side-nav a.active {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .side-nav a i {
            color: var(--primary);
            width: 18px;
            text-align: center;
        }
        .side-card-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .side-card-item {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .side-card-item img {
            width: 92px;
            height: 66px;
            object-fit: cover;
            border-radius: 10px;
            flex-shrink: 0;
        }
        .side-card-item a {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.55;
            transition: var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .side-card-item a:hover {
            color: var(--primary);
        }
        .contact-phone,
        .contact-mail {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            transition: var(--transition);
        }
        .contact-phone:hover,
        .contact-mail:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .contact-phone i,
        .contact-mail i {
            color: var(--primary);
        }

        /* ===== post content ===== */
        .post-content {
            font-size: 16px;
            line-height: 2;
            color: #3d4658;
        }
        .post-content h2 {
            font-size: 26px;
            color: var(--primary-dark);
            margin: 38px 0 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
            font-weight: 700;
        }
        .post-content h3 {
            font-size: 20px;
            color: var(--text);
            margin: 30px 0 14px;
            font-weight: 700;
        }
        .post-content p {
            margin-bottom: 18px;
        }
        .post-content img {
            border-radius: var(--radius);
            margin: 22px 0;
            box-shadow: var(--shadow-sm);
        }
        .post-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 22px;
            border-radius: 10px;
            margin: 24px 0;
            color: var(--text);
            font-size: 15px;
        }
        .post-content blockquote p {
            margin-bottom: 0;
        }
        .post-content ul,
        .post-content ol {
            padding-left: 24px;
            margin-bottom: 20px;
        }
        .post-content li {
            margin-bottom: 8px;
        }
        .post-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 22px 0;
            font-size: 14px;
        }
        .post-content th,
        .post-content td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .post-content th {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 600;
        }
        .post-content code {
            background: var(--bg);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 14px;
        }
        .post-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }
        .tags-label {
            font-weight: 600;
            color: var(--text);
            margin-right: 6px;
            font-size: 14px;
        }
        .tag {
            background: var(--bg);
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-muted);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary);
        }
        .post-share {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 30px;
            padding-top: 22px;
            border-top: 1px solid var(--border);
        }
        .share-label {
            color: var(--text-muted);
            margin-right: 6px;
            font-size: 14px;
        }
        .share-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 15px;
            transition: var(--transition);
        }
        .share-btn:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .post-cta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 30px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        /* ===== not found ===== */
        .not-found {
            text-align: center;
            padding: 90px 20px;
        }
        .not-found .not-found-icon {
            font-size: 60px;
            color: var(--accent);
            margin-bottom: 20px;
        }
        .not-found h2 {
            font-size: 30px;
            color: var(--text);
            margin-bottom: 12px;
            font-weight: 700;
        }
        .not-found p {
            color: var(--text-muted);
            margin-bottom: 28px;
            font-size: 15px;
        }

        /* ===== related section ===== */
        .related-section {
            background: var(--surface);
            padding: 80px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header .tagline {
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            letter-spacing: 2px;
            display: inline-block;
            margin-bottom: 8px;
        }
        .section-header h2 {
            font-size: 32px;
            color: var(--text);
            font-weight: 800;
            margin-bottom: 10px;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 620px;
            margin: 0 auto;
        }
        .related-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .content-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .content-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-bottom: 1px solid var(--border);
        }
        .content-card-body {
            padding: 26px 26px 28px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .content-card h3 {
            font-size: 18px;
            color: var(--text);
            margin-bottom: 10px;
            font-weight: 700;
        }
        .content-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
            flex: 1;
        }
        .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .card-link:hover {
            gap: 12px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 40px;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 22px 24px;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--primary);
        }
        .faq-item h4 {
            font-size: 15px;
            color: var(--text);
            margin-bottom: 8px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .faq-item h4 i {
            color: var(--primary);
        }
        .faq-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
            text-align: center;
        }
        .cta-inner h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-inner p {
            font-size: 16px;
            opacity: .9;
            margin-bottom: 32px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== footer ===== */
        .site-footer {
            background: #101a2b;
            color: #a3afc2;
            padding: 72px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand h3 {
            font-size: 22px;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 800;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.85;
            margin-bottom: 18px;
        }
        .footer-brand a {
            color: #a3afc2;
            font-size: 20px;
            margin-right: 12px;
        }
        .footer-brand a:hover {
            color: #fff;
        }
        .footer-links h4 {
            font-size: 16px;
            color: #fff;
            margin-bottom: 18px;
            font-weight: 700;
        }
        .footer-links a {
            display: block;
            padding: 5px 0;
            font-size: 14px;
            color: #a3afc2;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 6px;
        }
        .footer-bottom {
            border-top: 1px solid #24334a;
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: #7f8ba0;
        }
        .footer-bottom a {
            color: #7f8ba0;
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== responsive ===== */
        @media (max-width: 992px) {
            .post-layout {
                grid-template-columns: 1fr;
                padding: 40px 0 60px;
            }
            .post-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
            }
            .related-cards {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .topbar {
                display: none;
            }
            .nav-links {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--surface);
                flex-direction: column;
                padding: 20px 24px;
                box-shadow: var(--shadow-lg);
                display: none;
                border-radius: 0 0 var(--radius) var(--radius);
                max-height: calc(100vh - var(--header-h));
                overflow-y: auto;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li {
                width: 100%;
            }
            .nav-links .nav-link {
                width: 100%;
                text-align: center;
                padding: 14px 16px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta .btn {
                display: none;
            }
            .page-banner {
                padding: 80px 0 85px;
            }
            .post-main {
                padding: 34px 24px;
            }
            .post-sidebar {
                grid-template-columns: 1fr;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .cta-section {
                padding: 70px 0;
            }
        }
        @media (max-width: 560px) {
            .brand-text {
                font-size: 19px;
            }
            .nav-inner {
                gap: 12px;
            }
            .related-cards {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .post-main {
                border-radius: var(--radius);
                padding: 26px 18px;
            }
            .post-title {
                font-size: 24px;
            }
            .post-meta {
                gap: 12px;
                font-size: 13px;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .cta-inner h2 {
                font-size: 26px;
            }
            .btn {
                padding: 10px 16px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1e3a5f;
            --primary-dark: #142a47;
            --primary-light: #2c5294;
            --accent: #c9a86a;
            --accent-light: #e3c98f;
            --bg: #f5f7fa;
            --white: #ffffff;
            --text: #1a2332;
            --text-weak: #5b6b7f;
            --border: #e2e8f0;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 10px 30px rgba(30, 58, 95, 0.08);
            --shadow-lg: 0 20px 50px rgba(30, 58, 95, 0.15);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

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

        /* ---------- Topbar ---------- */
        .topbar {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            font-size: 13px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .topbar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .topbar-inner span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .topbar-inner a {
            color: #fff;
            font-weight: 500;
        }

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

        .topbar-inner i {
            color: var(--accent);
        }

        /* ---------- Main Nav ---------- */
        .main-nav {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 24px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 21px;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            gap: 6px;
            align-items: center;
        }

        .nav-link {
            padding: 10px 18px;
            border-radius: 999px;
            font-weight: 500;
            color: var(--text-weak);
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(30, 58, 95, 0.06);
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(30, 58, 95, 0.25);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            font-size: 15px;
            line-height: 1.4;
        }

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

        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(201, 168, 106, 0.35);
        }

        .btn-outline {
            border: 2px solid rgba(255, 255, 255, 0.85);
            color: #fff;
            background: transparent;
        }

        .btn-outline:hover {
            background: #fff;
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }

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

        .btn-dark:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(30, 58, 95, 0.3);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 10px;
            z-index: 101;
        }

        .nav-toggle span {
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ---------- Page Hero ---------- */
        .page-hero {
            padding: 100px 0 90px;
            background: linear-gradient(135deg, rgba(20, 42, 71, 0.9), rgba(30, 58, 95, 0.75)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            color: #fff;
            text-align: center;
            position: relative;
        }

        .page-hero .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            opacity: 0.85;
            margin-bottom: 16px;
        }

        .page-hero .breadcrumb a:hover {
            color: var(--accent);
        }

        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .page-hero p {
            font-size: 17px;
            max-width: 720px;
            margin: 0 auto;
            opacity: 0.92;
            line-height: 1.8;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 999px;
            padding: 6px 18px;
            font-size: 13px;
            margin-bottom: 20px;
            backdrop-filter: blur(6px);
        }

        /* ---------- Filter Bar ---------- */
        .filter-bar {
            position: relative;
            z-index: 5;
            margin-top: -32px;
        }

        .filter-card {
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            padding: 20px 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            border: 1px solid var(--border);
        }

        .filter-tag {
            padding: 8px 20px;
            border-radius: 999px;
            background: var(--bg);
            border: 1px solid var(--border);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-weak);
            cursor: pointer;
            transition: var(--transition);
        }

        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(30, 58, 95, 0.04);
        }

        .filter-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(30, 58, 95, 0.2);
        }

        /* ---------- Section ---------- */
        .section {
            padding: 80px 0;
        }

        .section-white {
            background: var(--white);
        }

        .section-head {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 48px;
        }

        .eyebrow {
            display: inline-block;
            background: rgba(201, 168, 106, 0.15);
            color: #a8894a;
            font-weight: 700;
            font-size: 13px;
            letter-spacing: 1px;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
        }

        .section-head p {
            color: var(--text-weak);
            margin-top: 14px;
            font-size: 16px;
        }

        /* ---------- Core Services ---------- */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

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

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(30, 58, 95, 0.15);
        }

        .service-img {
            height: 150px;
            overflow: hidden;
        }

        .service-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .service-card:hover .service-img img {
            transform: scale(1.05);
        }

        .service-body {
            padding: 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .service-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .service-body p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
        }

        .service-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            margin-top: 14px;
        }

        .service-link:hover {
            color: var(--accent);
        }

        .service-link i {
            font-size: 12px;
            transition: transform 0.3s;
        }

        .service-link:hover i {
            transform: translateX(4px);
        }

        /* ---------- News Grid ---------- */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 32px;
            align-items: start;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .news-item {
            display: flex;
            gap: 20px;
            background: var(--white);
            border-radius: var(--radius);
            padding: 18px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .news-thumb {
            width: 220px;
            height: 140px;
            border-radius: 12px;
            overflow: hidden;
            flex-shrink: 0;
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s;
        }

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

        .news-content {
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 6px;
            flex-wrap: wrap;
        }

        .news-tag {
            background: rgba(30, 58, 95, 0.08);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 12px;
        }

        .news-tag.hot {
            background: rgba(201, 168, 106, 0.18);
            color: #a8894a;
        }

        .news-content h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

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

        .news-content p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
        }

        .news-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            margin-top: 10px;
        }

        .news-more:hover {
            color: var(--accent);
        }

        /* ---------- Sidebar ---------- */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .side-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        .side-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--bg);
            position: relative;
        }

        .side-card h3::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 36px;
            height: 2px;
            background: var(--accent);
        }

        .hot-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px dashed var(--border);
        }

        .hot-list li:last-child {
            border-bottom: none;
        }

        .hot-num {
            width: 24px;
            height: 24px;
            border-radius: 6px;
            background: var(--bg);
            color: var(--text-weak);
            font-size: 13px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .hot-list li:nth-child(-n+3) .hot-num {
            background: var(--accent);
            color: #fff;
        }

        .hot-list a {
            font-size: 14px;
            line-height: 1.5;
            color: var(--text);
        }

        .hot-list a:hover {
            color: var(--primary);
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud a {
            padding: 6px 14px;
            background: var(--bg);
            border-radius: 999px;
            font-size: 13px;
            color: var(--text-weak);
            border: 1px solid transparent;
        }

        .tag-cloud a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .contact-card {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-lg);
        }

        .contact-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin: 0 auto 16px;
        }

        .contact-card h4 {
            font-size: 18px;
            margin-bottom: 8px;
        }

        .contact-card p {
            font-size: 14px;
            opacity: 0.85;
            margin-bottom: 18px;
            line-height: 1.7;
        }

        .contact-card .btn {
            width: 100%;
            justify-content: center;
        }

        /* ---------- Flow Section ---------- */
        .flow-section {
            background: linear-gradient(135deg, rgba(20, 42, 71, 0.92), rgba(30, 58, 95, 0.82)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            color: #fff;
        }

        .flow-section .section-head h2 {
            color: #fff;
        }

        .flow-section .section-head p {
            color: rgba(255, 255, 255, 0.75);
        }

        .flow-section .eyebrow {
            background: rgba(255, 255, 255, 0.12);
            color: var(--accent-light);
        }

        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 20px;
        }

        .step-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            transition: var(--transition);
            position: relative;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .step-card:hover {
            transform: translateY(-6px);
        }

        .step-num {
            width: 60px;
            height: 60px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 20px rgba(30, 58, 95, 0.2);
        }

        .step-card h3 {
            font-size: 17px;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .step-card p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.7;
        }

        /* ---------- Stats Section ---------- */
        .stats-section {
            background: var(--white);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stat-item {
            padding: 32px 20px;
            border-radius: var(--radius);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .stat-item h3 {
            font-size: 42px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-item h3 span {
            color: var(--accent);
        }

        .stat-item p {
            color: var(--text-weak);
            font-size: 15px;
        }

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

        .faq-item {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            margin-bottom: 14px;
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item[open] {
            box-shadow: var(--shadow-lg);
            border-color: rgba(30, 58, 95, 0.12);
        }

        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            list-style: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary i {
            color: var(--accent);
            transition: transform 0.3s;
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-item[open] summary i {
            transform: rotate(45deg);
        }

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

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-weak);
            font-size: 15px;
            line-height: 1.8;
            border-top: 1px dashed var(--border);
            padding-top: 16px;
        }

        /* ---------- CTA Section ---------- */
        .cta-section {
            background: linear-gradient(135deg, rgba(20, 42, 71, 0.9), rgba(30, 58, 95, 0.8)), url('/assets/images/backpic/back-3.png') center / cover no-repeat;
            color: #fff;
            text-align: center;
            padding: 80px 0;
        }

        .cta-inner {
            max-width: 760px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-inner p {
            font-size: 16px;
            opacity: 0.88;
            margin-bottom: 28px;
            line-height: 1.8;
        }

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

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 18px;
            opacity: 0.8;
        }

        .footer-brand a {
            color: rgba(255, 255, 255, 0.7);
            display: inline-flex;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .footer-brand a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }

        .footer-links h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-links h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
        }

        .footer-links a,
        .footer-links span {
            display: block;
            padding: 5px 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

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

        .footer-links i {
            margin-right: 8px;
            width: 16px;
            display: inline-block;
        }

        .footer-contact a {
            display: flex;
            align-items: center;
        }

        .footer-bottom {
            text-align: center;
            padding: 22px 0;
            font-size: 13px;
            opacity: 0.7;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.85);
        }

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

        /* ---------- Responsive ---------- */
        @media (max-width: 1024px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .news-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 900px) {
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 300px;
                height: 100vh;
                background: var(--white);
                flex-direction: column;
                align-items: stretch;
                padding: 90px 28px 28px;
                transition: right 0.35s ease;
                box-shadow: -10px 0 40px rgba(0, 0, 0, 0.15);
                z-index: 100;
                gap: 8px;
            }

            .nav-links.open {
                right: 0;
            }

            .nav-links li a {
                display: flex;
                padding: 14px 18px;
                border-radius: 12px;
                font-size: 16px;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-cta .btn-primary {
                display: none;
            }

            .nav-inner {
                height: 68px;
            }
        }

        @media (max-width: 768px) {
            .topbar-inner span:first-child,
            .topbar-inner span:nth-child(2) {
                display: none;
            }

            .topbar-inner {
                justify-content: center;
            }

            .page-hero {
                padding: 70px 0 70px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

            .page-hero p {
                font-size: 15px;
            }

            .section {
                padding: 56px 0;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .service-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .news-item {
                flex-direction: column;
            }

            .news-thumb {
                width: 100%;
                height: 0;
                padding-bottom: 60%;
                position: relative;
            }

            .news-thumb img {
                position: absolute;
                inset: 0;
                width: 100%;
                height: 100%;
            }

            .steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .stat-item h3 {
                font-size: 30px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cta-section {
                padding: 60px 0;
            }

            .cta-inner h2 {
                font-size: 26px;
            }

            .brand-text {
                font-size: 18px;
            }

            .filter-bar {
                margin-top: -22px;
            }

            .filter-card {
                padding: 16px;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .brand-text {
                font-size: 16px;
            }

            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
                border-radius: 10px;
            }

            .page-hero h1 {
                font-size: 26px;
            }

            .hero-badge {
                font-size: 12px;
                padding: 5px 14px;
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }

            .cta-actions {
                flex-direction: column;
                align-items: center;
            }

            .cta-actions .btn {
                width: 100%;
                justify-content: center;
            }

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

            .faq-answer {
                padding: 0 18px 16px;
            }

            .footer-bottom {
                font-size: 12px;
                line-height: 1.7;
            }
        }