/* roulang page: index */
:root {
            --primary: #0b2b5c;
            --primary-light: #164a8a;
            --secondary: #e87830;
            --accent: #14a8a0;
            --bg: #f5f8fc;
            --bg-dark: #0a1a33;
            --text: #16233a;
            --text-muted: #64748b;
            --border: #e8edf4;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow: 0 12px 40px rgba(11, 43, 92, .08);
            --shadow-hover: 0 20px 50px rgba(11, 43, 92, .14);
            --font: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --space-section: 96px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all .25s ease;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button,
        input {
            font-family: var(--font);
        }
        .container {
            max-width: 1280px;
            padding: 0 28px;
            margin: 0 auto;
        }
        .section {
            padding: var(--space-section) 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-dark {
            background: var(--bg-dark);
            color: #e8eef5;
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }
        .section-head .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .08em;
            color: var(--accent);
            background: rgba(20, 168, 160, .1);
            padding: 6px 18px;
            border-radius: 30px;
            margin-bottom: 16px;
        }
        .section-head h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -.02em;
            margin-bottom: 12px;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 1.02rem;
        }
        .btn {
            border-radius: 50px;
            padding: 12px 28px;
            font-weight: 600;
            font-size: .95rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all .3s ease;
            border: none;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary-custom:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(11, 43, 92, .2);
            color: #fff;
        }
        .btn-accent {
            background: var(--secondary);
            color: #fff;
        }
        .btn-accent:hover {
            background: #d16920;
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(232, 120, 48, .3);
            color: #fff;
        }
        .btn-outline-light {
            border: 1px solid rgba(255, 255, 255, .6);
            color: #fff;
            background: transparent;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .1);
            border-color: #fff;
        }
        /* ---------- Header / Nav ---------- */
        .site-header {
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0;
        }
        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 20px;
        }
        .brand-logo {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -.01em;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .brand-logo .logo-dot {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .9rem;
            color: #fff;
            font-weight: 700;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .main-nav a {
            font-size: .95rem;
            font-weight: 500;
            color: var(--text);
            padding: 10px 18px;
            border-radius: 30px;
            position: relative;
            transition: all .25s ease;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: rgba(11, 43, 92, .05);
        }
        .main-nav a.active {
            color: var(--primary);
            background: rgba(11, 43, 92, .08);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 4px;
            background: var(--accent);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .nav-cta .nav-link-btn {
            font-size: .9rem;
            font-weight: 600;
            color: var(--primary);
            border: 1px solid var(--border);
            padding: 9px 20px;
            border-radius: 30px;
            transition: all .25s ease;
            background: #fff;
        }
        .nav-cta .nav-link-btn:hover {
            border-color: var(--primary);
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--primary);
            cursor: pointer;
            padding: 8px;
        }
        @media (max-width: 992px) {
            .main-nav {
                position: fixed;
                top: 76px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: 20px 28px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(0, 0, 0, .08);
                display: none;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: 10px;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-cta .nav-link-btn {
                display: none;
            }
        }
        /* ---------- Hero ---------- */
        .hero {
            position: relative;
            padding: 140px 0 100px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            background-color: var(--bg-dark);
            color: #fff;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(10, 26, 51, .92) 20%, rgba(10, 26, 51, .65) 60%, rgba(20, 168, 160, .3) 100%);
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            backdrop-filter: blur(6px);
            padding: 7px 20px;
            border-radius: 30px;
            font-size: .85rem;
            letter-spacing: .05em;
            margin-bottom: 24px;
            color: #d1e8e6;
        }
        .hero h1 {
            font-size: 3.1rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -.03em;
            max-width: 680px;
            margin-bottom: 20px;
        }
        .hero h1 span {
            color: #56d6cd;
        }
        .hero .lead {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, .85);
            max-width: 600px;
            line-height: 1.8;
            margin-bottom: 36px;
        }
        .hero .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero .hero-meta {
            display: flex;
            gap: 30px;
            margin-top: 60px;
            flex-wrap: wrap;
        }
        .hero .hero-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .hero .hero-meta .meta-item i {
            font-size: 1.2rem;
            color: #56d6cd;
        }
        .hero .hero-meta .meta-item span {
            font-size: .9rem;
            color: rgba(255, 255, 255, .8);
        }
        @media (max-width: 768px) {
            .hero {
                padding: 100px 0 70px;
            }
            .hero h1 {
                font-size: 2.1rem;
            }
            .hero .lead {
                font-size: 1rem;
            }
            .hero .hero-meta {
                gap: 16px;
                flex-direction: column;
            }
        }
        /* ---------- Feature Cards ---------- */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all .35s ease;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card .icon-wrap {
            width: 58px;
            height: 58px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 20px;
            color: #fff;
        }
        .feature-card .icon-wrap.i-blue {
            background: linear-gradient(135deg, var(--primary), #3b7ed0);
        }
        .feature-card .icon-wrap.i-green {
            background: linear-gradient(135deg, #0e8f86, #45d0c4);
        }
        .feature-card .icon-wrap.i-orange {
            background: linear-gradient(135deg, #db6b1f, #f5a06b);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: .95rem;
            line-height: 1.7;
        }
        @media (max-width: 992px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ---------- Category Cards ---------- */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .cat-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all .35s ease;
            display: flex;
            flex-direction: column;
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .cat-card .cat-cover {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .cat-card .cat-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .45s ease;
        }
        .cat-card:hover .cat-cover img {
            transform: scale(1.05);
        }
        .cat-card .cat-cover .cat-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(10, 26, 51, .75);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: .78rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 20px;
        }
        .cat-card .cat-body {
            padding: 28px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .cat-card .cat-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .cat-card .cat-body p {
            color: var(--text-muted);
            font-size: .92rem;
            flex: 1;
            margin-bottom: 16px;
        }
        .cat-card .cat-link {
            font-weight: 600;
            font-size: .9rem;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .cat-card .cat-link:hover {
            gap: 10px;
            color: var(--primary);
        }
        @media (max-width: 992px) {
            .cat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .cat-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ---------- Latest List ---------- */
        .latest-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            align-items: stretch;
        }
        .news-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 24px 26px;
            border: 1px solid var(--border);
            box-shadow: 0 4px 16px rgba(11, 43, 92, .05);
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: #d5dff0;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: .82rem;
            color: var(--text-muted);
        }
        .news-card .news-meta .cat-badge {
            background: rgba(20, 168, 160, .1);
            color: var(--accent);
            padding: 3px 12px;
            border-radius: 20px;
            font-weight: 600;
            font-size: .78rem;
        }
        .news-card .news-meta .date {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-card h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.5;
            margin: 0;
        }
        .news-card h3 a:hover {
            color: var(--primary);
        }
        .news-card .news-desc {
            color: var(--text-muted);
            font-size: .9rem;
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 768px) {
            .latest-list {
                grid-template-columns: 1fr;
            }
        }
        /* ---------- Stats ---------- */
        .stats-section {
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            position: relative;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 26, 51, .92);
        }
        .stats-section .container {
            position: relative;
            z-index: 2;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }
        .stat-item {
            text-align: center;
            padding: 30px 20px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .08);
        }
        .stat-item .num {
            font-size: 2.6rem;
            font-weight: 800;
            color: #56d6cd;
            line-height: 1.2;
        }
        .stat-item .label {
            color: rgba(255, 255, 255, .7);
            font-size: .9rem;
            margin-top: 6px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ---------- Steps ---------- */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .step-item {
            text-align: center;
            position: relative;
            padding: 30px 20px;
        }
        .step-item .step-num {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            border: 4px solid rgba(20, 168, 160, .15);
        }
        .step-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .step-item p {
            color: var(--text-muted);
            font-size: .9rem;
        }
        .step-item:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -14px;
            width: 28px;
            height: 2px;
            background: var(--border);
        }
        @media (max-width: 992px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-item:nth-child(2)::after {
                display: none;
            }
        }
        @media (max-width: 600px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .step-item::after {
                display: none !important;
            }
        }
        /* ---------- FAQ ---------- */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            margin-bottom: 16px;
            transition: all .25s ease;
        }
        .faq-item:hover {
            border-color: #d0dced;
            box-shadow: var(--shadow);
        }
        .faq-item summary {
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            font-size: 1rem;
            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;
            font-size: .8rem;
            color: var(--accent);
            transition: transform .3s ease;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item .faq-body {
            color: var(--text-muted);
            font-size: .93rem;
            line-height: 1.7;
            padding-top: 14px;
            margin-top: 14px;
            border-top: 1px solid var(--border);
        }
        /* ---------- CTA ---------- */
        .cta-section {
            background: linear-gradient(120deg, var(--primary) 0%, #17487e 100%);
            border-radius: var(--radius-lg);
            padding: 60px 50px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .05);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(20, 168, 160, .12);
        }
        .cta-section .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, .75);
            max-width: 560px;
            margin: 0 auto 30px;
            font-size: 1.05rem;
        }
        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, .7);
            padding: 70px 0 40px;
            margin-top: 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }
        .site-footer .footer-brand .brand-logo {
            color: #fff;
            margin-bottom: 14px;
        }
        .site-footer .footer-brand p {
            font-size: .9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, .55);
            max-width: 320px;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: .02em;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, .55);
            font-size: .9rem;
            transition: all .2s ease;
        }
        .site-footer .footer-links a:hover {
            color: #56d6cd;
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 30px;
            text-align: center;
            font-size: .85rem;
            color: rgba(255, 255, 255, .4);
        }
        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }
        /* ---------- Other Common ---------- */
        .box-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(20, 168, 160, .1);
            color: var(--accent);
            font-size: .82rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
        }
        .text-muted {
            color: var(--text-muted) !important;
        }
        .text-primary-custom {
            color: var(--primary) !important;
        }
        .bg-dark-custom {
            background: var(--bg-dark);
        }
        .rounded-card {
            border-radius: var(--radius-lg);
        }
        .shadow-custom {
            box-shadow: var(--shadow);
        }
        @media (max-width: 520px) {
            :root {
                --space-section: 64px;
            }
            .section-head h2 {
                font-size: 1.6rem;
            }
            .container {
                padding: 0 20px;
            }
        }

/* roulang page: article */
:root {
        --brand-primary: #16324f;
        --brand-primary-dark: #0e2238;
        --brand-primary-light: #eaf1f8;
        --brand-accent: #e0763a;
        --brand-accent-dark: #c85f28;
        --brand-accent-light: #f9ede5;
        --bg-body: #f5f7fa;
        --bg-white: #ffffff;
        --text-main: #18202b;
        --text-muted: #667180;
        --border-color: #e4e8ef;
        --radius-md: 12px;
        --radius-lg: 18px;
        --radius-xl: 26px;
        --shadow-sm: 0 2px 10px rgba(22, 50, 79, .06);
        --shadow-md: 0 10px 32px rgba(22, 50, 79, .09);
        --shadow-lg: 0 24px 60px rgba(22, 50, 79, .14);
        --space-section: 96px;
        --font-base: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
    }

    *,
    *::before,
    *::after {
        box-sizing: border-box;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-base);
        background: var(--bg-body);
        color: var(--text-main);
        line-height: 1.72;
        letter-spacing: .01em;
        -webkit-font-smoothing: antialiased;
    }
    a {
        color: var(--brand-primary);
        text-decoration: none;
        transition: color .25s ease, background .25s ease, box-shadow .25s ease, transform .25s ease;
    }
    a:hover {
        color: var(--brand-accent);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    .container {
        max-width: 1180px;
    }

    .btn {
        border-radius: 50px;
        font-weight: 600;
        letter-spacing: .02em;
        padding: .65rem 1.6rem;
        transition: all .28s ease;
        border: 2px solid transparent;
    }
    .btn-brand {
        background: var(--brand-primary);
        color: #fff;
    }
    .btn-brand:hover {
        background: var(--brand-accent);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(224, 118, 58, .28);
    }
    .btn-outline-light {
        border-color: rgba(255, 255, 255, .7);
        color: #fff;
        background: transparent;
    }
    .btn-outline-light:hover {
        background: #fff;
        color: var(--brand-primary);
        border-color: #fff;
        transform: translateY(-2px);
    }
    .btn-accent {
        background: var(--brand-accent);
        color: #fff;
    }
    .btn-accent:hover {
        background: var(--brand-accent-dark);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 10px 30px rgba(224, 118, 58, .32);
    }
    .btn:focus {
        box-shadow: 0 0 0 .25rem rgba(224, 118, 58, .25);
    }

    .section {
        padding: var(--space-section) 0;
    }
    .section-tight {
        padding: 60px 0;
    }
    .section-header {
        text-align: center;
        max-width: 720px;
        margin: 0 auto 48px;
    }
    .section-header .eyebrow {
        display: inline-block;
        background: var(--brand-accent-light);
        color: var(--brand-accent-dark);
        border-radius: 50px;
        padding: .3rem 1rem;
        font-size: .85rem;
        font-weight: 700;
        letter-spacing: .04em;
        margin-bottom: 14px;
    }
    .section-header h2 {
        font-size: clamp(1.7rem, 2.6vw, 2.35rem);
        font-weight: 800;
        letter-spacing: -.01em;
        color: var(--brand-primary-dark);
        margin-bottom: 12px;
    }
    .section-header p {
        color: var(--text-muted);
        font-size: 1.05rem;
    }

    /* ===== Header / Nav ===== */
    .site-header {
        background: rgba(255, 255, 255, .92);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom: 1px solid rgba(228, 232, 239, .8);
        position: sticky;
        top: 0;
        z-index: 1080;
    }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 74px;
        gap: 28px;
    }
    .brand-logo {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-size: 1.25rem;
        font-weight: 800;
        color: var(--brand-primary-dark);
        white-space: nowrap;
        letter-spacing: -.01em;
    }
    .brand-logo:hover {
        color: var(--brand-primary-dark);
    }
    .logo-dot {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        border-radius: 12px;
        background: linear-gradient(135deg, var(--brand-primary), #2d5f8f);
        color: #fff;
        font-size: .82rem;
        font-weight: 800;
        letter-spacing: 0;
        box-shadow: 0 4px 14px rgba(22, 50, 79, .3);
    }
    .main-nav {
        display: flex;
        gap: 4px;
    }
    .main-nav a {
        position: relative;
        padding: .55rem 1rem;
        border-radius: 30px;
        font-weight: 600;
        font-size: .95rem;
        color: var(--text-muted);
        letter-spacing: .01em;
    }
    .main-nav a:hover {
        color: var(--brand-primary);
        background: var(--brand-primary-light);
    }
    .main-nav a.active {
        color: var(--brand-primary-dark);
        background: var(--brand-primary-light);
    }
    .main-nav a.active::after {
        content: '';
        position: absolute;
        left: 50%;
        bottom: 4px;
        transform: translateX(-50%);
        width: 22px;
        height: 3px;
        border-radius: 4px;
        background: var(--brand-accent);
    }
    .nav-toggle {
        display: none;
        width: 42px;
        height: 42px;
        border: 1px solid var(--border-color);
        border-radius: 12px;
        background: #fff;
        color: var(--brand-primary);
        font-size: 1.1rem;
        align-items: center;
        justify-content: center;
        transition: all .25s ease;
    }
    .nav-toggle:hover {
        background: var(--brand-primary-light);
        border-color: var(--brand-primary);
    }
    .nav-toggle:focus {
        box-shadow: 0 0 0 .25rem rgba(22, 50, 79, .15);
        outline: none;
    }

    /* ===== Article Hero ===== */
    .article-hero {
        position: relative;
        padding: 76px 0 72px;
        color: #fff;
        background-size: cover;
        background-position: center;
        background-image: url('/assets/images/backpic/back-1.png');
    }
    .article-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(120deg, rgba(14, 34, 56, .88) 0%, rgba(22, 50, 79, .78) 50%, rgba(22, 50, 79, .55) 100%);
    }
    .article-hero .container {
        position: relative;
        z-index: 2;
    }
    .breadcrumb-nav {
        margin-bottom: 26px;
    }
    .breadcrumb-nav .breadcrumb {
        margin-bottom: 0;
        background: transparent;
    }
    .breadcrumb-nav .breadcrumb-item,
    .breadcrumb-nav .breadcrumb-item a {
        color: rgba(255, 255, 255, .75);
        font-size: .88rem;
        font-weight: 500;
    }
    .breadcrumb-nav .breadcrumb-item a:hover {
        color: #fff;
    }
    .breadcrumb-nav .breadcrumb-item.active {
        color: #fff;
        opacity: .9;
    }
    .breadcrumb-nav .breadcrumb-item + .breadcrumb-item::before {
        color: rgba(255, 255, 255, .5);
        content: '/';
    }
    .article-hero h1 {
        font-size: clamp(1.8rem, 3.2vw, 2.8rem);
        font-weight: 800;
        letter-spacing: -.01em;
        line-height: 1.32;
        max-width: 800px;
        margin-bottom: 20px;
        text-shadow: 0 2px 14px rgba(0, 0, 0, .2);
    }
    .article-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 18px;
        font-size: .9rem;
        color: rgba(255, 255, 255, .85);
    }
    .article-meta span {
        display: inline-flex;
        align-items: center;
        gap: 7px;
    }
    .article-meta i {
        color: var(--brand-accent);
    }
    .article-hero-badge {
        display: inline-block;
        background: rgba(255, 255, 255, .14);
        border: 1px solid rgba(255, 255, 255, .25);
        backdrop-filter: blur(6px);
        border-radius: 50px;
        padding: .3rem 1.05rem;
        font-size: .8rem;
        font-weight: 600;
        letter-spacing: .03em;
        margin-bottom: 16px;
        color: #fff;
    }

    /* ===== Article Main ===== */
    .article-main {
        padding: 72px 0 96px;
    }
    .article-card {
        background: var(--bg-white);
        border-radius: var(--radius-xl);
        box-shadow: var(--shadow-md);
        border: 1px solid rgba(228, 232, 239, .6);
        padding: 44px 48px;
        margin-bottom: 32px;
    }
    .article-card h2 {
        font-size: 1.55rem;
        font-weight: 800;
        color: var(--brand-primary-dark);
        margin: 1.6em 0 .7em;
        letter-spacing: -.01em;
    }
    .article-card h3 {
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--brand-primary-dark);
        margin: 1.4em 0 .6em;
    }
    .article-card p {
        margin-bottom: 1.1em;
        color: #39424f;
        font-size: 1.03rem;
    }
    .article-card ul,
    .article-card ol {
        margin-bottom: 1.2em;
        padding-left: 1.4em;
        color: #39424f;
    }
    .article-card li {
        margin-bottom: .45em;
    }
    .article-card blockquote {
        background: var(--brand-primary-light);
        border-left: 4px solid var(--brand-accent);
        padding: 18px 24px;
        margin: 1.5em 0;
        border-radius: 0 12px 12px 0;
        color: var(--brand-primary-dark);
        font-style: normal;
        font-weight: 600;
    }
    .article-card img {
        border-radius: 16px;
        margin: 1.4em 0;
        box-shadow: var(--shadow-sm);
    }
    .article-card .lead {
        font-size: 1.12rem;
        color: #2a3444;
        font-weight: 500;
    }

    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        padding-top: 24px;
        border-top: 1px solid var(--border-color);
        margin-top: 36px;
    }
    .tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: var(--brand-primary-light);
        color: var(--brand-primary);
        border-radius: 50px;
        padding: .35rem 1rem;
        font-size: .84rem;
        font-weight: 600;
        transition: all .25s ease;
    }
    .tag:hover {
        background: var(--brand-accent-light);
        color: var(--brand-accent-dark);
    }

    .not-found {
        text-align: center;
        padding: 80px 24px;
    }
    .not-found i {
        font-size: 3.2rem;
        color: #c2ccd8;
        margin-bottom: 18px;
    }
    .not-found h2 {
        font-size: 1.6rem;
        font-weight: 800;
        color: var(--brand-primary-dark);
        margin-bottom: 10px;
    }
    .not-found p {
        color: var(--text-muted);
        margin-bottom: 24px;
    }

    /* ===== Sidebar ===== */
    .sidebar-inner {
        position: sticky;
        top: 96px;
    }
    .side-card {
        background: var(--bg-white);
        border-radius: var(--radius-lg);
        border: 1px solid rgba(228, 232, 239, .7);
        box-shadow: var(--shadow-sm);
        padding: 26px;
        margin-bottom: 24px;
        transition: box-shadow .3s ease;
    }
    .side-card:hover {
        box-shadow: var(--shadow-md);
    }
    .side-card h4 {
        font-size: 1.02rem;
        font-weight: 800;
        color: var(--brand-primary-dark);
        margin-bottom: 16px;
        padding-bottom: 12px;
        border-bottom: 2px solid var(--brand-primary-light);
    }
    .side-card p {
        font-size: .92rem;
        color: var(--text-muted);
        margin-bottom: 14px;
    }
    .side-list {
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .side-list li {
        margin-bottom: 4px;
    }
    .side-list a {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 9px 12px;
        border-radius: 10px;
        font-size: .92rem;
        font-weight: 500;
        color: var(--text-main);
        transition: all .22s ease;
    }
    .side-list a:hover {
        background: var(--brand-primary-light);
        color: var(--brand-primary);
        transform: translateX(3px);
    }
    .side-list a i {
        color: var(--brand-accent);
        font-size: .8rem;
    }
    .side-cover {
        border-radius: 14px;
        overflow: hidden;
        margin-bottom: 16px;
    }
    .side-cover img {
        width: 100%;
        height: 130px;
        object-fit: cover;
    }
    .side-link-more {
        font-size: .88rem;
        font-weight: 600;
        color: var(--brand-accent);
    }

    /* ===== Related ===== */
    .related-section {
        padding: 72px 0 88px;
        background: var(--bg-white);
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
    }
    .related-card {
        display: block;
        background: var(--bg-body);
        border-radius: var(--radius-lg);
        overflow: hidden;
        border: 1px solid var(--border-color);
        height: 100%;
        transition: all .35s ease;
    }
    .related-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-lg);
        border-color: transparent;
    }
    .related-card .card-img {
        position: relative;
        overflow: hidden;
        height: 178px;
    }
    .related-card .card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .6s ease;
    }
    .related-card:hover .card-img img {
        transform: scale(1.06);
    }
    .related-card .card-img::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 60%, rgba(14, 34, 56, .35));
        opacity: .6;
        transition: opacity .3s;
    }
    .related-card:hover .card-img::after {
        opacity: .85;
    }
    .related-card .card-body {
        padding: 20px 22px 24px;
    }
    .related-card .card-body h3 {
        font-size: 1.05rem;
        font-weight: 700;
        color: var(--brand-primary-dark);
        margin-bottom: 8px;
        line-height: 1.45;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-card .card-body p {
        font-size: .88rem;
        color: var(--text-muted);
        margin-bottom: 12px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-card .card-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: .8rem;
        color: var(--text-muted);
    }
    .related-card .card-meta .cat {
        color: var(--brand-accent);
        font-weight: 600;
    }

    /* ===== FAQ ===== */
    .faq-section {
        padding: var(--space-section) 0;
    }
    .accordion {
        --bs-accordion-border-radius: 16px;
        --bs-accordion-border-color: var(--border-color);
        --bs-accordion-bg: #fff;
        --bs-accordion-box-shadow: 0 2px 10px rgba(22, 50, 79, .05);
    }
    .accordion-item {
        border-radius: 16px !important;
        overflow: hidden;
        margin-bottom: 14px;
        border: 1px solid var(--border-color);
        box-shadow: var(--shadow-sm);
    }
    .accordion-button {
        font-weight: 700;
        color: var(--brand-primary-dark);
        font-size: 1rem;
        padding: 1rem 1.4rem;
        background: #fff;
    }
    .accordion-button:not(.collapsed) {
        background: var(--brand-primary-light);
        color: var(--brand-primary-dark);
        box-shadow: none;
    }
    .accordion-button:focus {
        box-shadow: 0 0 0 .25rem rgba(22, 50, 79, .12);
    }
    .accordion-button::after {
        background-size: 1rem;
        opacity: .6;
    }
    .accordion-body {
        color: #45505f;
        font-size: .97rem;
        padding: 1.1rem 1.4rem 1.3rem;
        line-height: 1.75;
    }

    /* ===== CTA ===== */
    .cta-section {
        padding: 32px 0 92px;
    }
    .cta-banner {
        background: linear-gradient(120deg, #0e2238 0%, #16324f 55%, #2d5f8f 100%);
        border-radius: 28px;
        padding: 64px 40px;
        text-align: center;
        color: #fff;
        position: relative;
        overflow: hidden;
    }
    .cta-banner::before {
        content: '';
        position: absolute;
        width: 320px;
        height: 320px;
        border-radius: 50%;
        background: rgba(255, 255, 255, .04);
        top: -120px;
        right: -60px;
    }
    .cta-banner::after {
        content: '';
        position: absolute;
        width: 220px;
        height: 220px;
        border-radius: 50%;
        background: rgba(224, 118, 58, .12);
        bottom: -80px;
        left: -40px;
    }
    .cta-banner .container {
        position: relative;
        z-index: 2;
    }
    .cta-banner h2 {
        font-size: clamp(1.6rem, 2.6vw, 2.3rem);
        font-weight: 800;
        margin-bottom: 12px;
    }
    .cta-banner p {
        color: rgba(255, 255, 255, .8);
        font-size: 1.05rem;
        margin-bottom: 28px;
    }
    .cta-banner .btn-group {
        display: flex;
        gap: 14px;
        justify-content: center;
        flex-wrap: wrap;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: #0e2238;
        padding: 64px 0 32px;
        color: rgba(255, 255, 255, .7);
        font-size: .92rem;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr 1fr;
        gap: 44px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255, 255, 255, .1);
        margin-bottom: 28px;
    }
    .footer-brand .brand-logo {
        color: #fff;
        margin-bottom: 14px;
    }
    .footer-brand p {
        max-width: 420px;
        line-height: 1.75;
        margin: 0;
        color: rgba(255, 255, 255, .6);
    }
    .site-footer h4 {
        color: #fff;
        font-size: 1rem;
        font-weight: 700;
        margin-bottom: 18px;
        letter-spacing: .02em;
    }
    .footer-links {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .footer-links a {
        color: rgba(255, 255, 255, .68);
        font-weight: 500;
        transition: all .22s ease;
    }
    .footer-links a:hover {
        color: #fff;
        text-decoration: none;
        transform: translateX(3px);
    }
    .footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        flex-wrap: wrap;
    }
    .footer-bottom p {
        margin: 0;
        color: rgba(255, 255, 255, .45);
        font-size: .84rem;
    }

    /* ===== Responsive ===== */
    @media (max-width: 991px) {
        :root {
            --space-section: 72px;
        }
        .header-inner {
            height: 66px;
        }
        .main-nav {
            position: fixed;
            top: 66px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 18px 40px rgba(22, 50, 79, .12);
            flex-direction: column;
            padding: 18px 22px;
            gap: 6px;
            display: none;
            z-index: 1070;
        }
        .main-nav.open {
            display: flex;
        }
        .main-nav a {
            padding: .8rem 1rem;
            border-radius: 12px;
        }
        .main-nav a.active::after {
            display: none;
        }
        .nav-toggle {
            display: inline-flex;
        }
        .article-card {
            padding: 32px 28px;
        }
        .sidebar-inner {
            position: static;
            margin-top: 24px;
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
    }

    @media (max-width: 768px) {
        .article-hero {
            padding: 56px 0 52px;
        }
        .article-main {
            padding: 48px 0 64px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .cta-banner {
            padding: 48px 24px;
        }
        .article-card {
            padding: 24px 18px;
        }
        .article-meta {
            gap: 10px;
            font-size: .82rem;
        }
    }

    @media (max-width: 520px) {
        :root {
            --space-section: 56px;
        }
        .brand-logo {
            font-size: 1.05rem;
        }
        .logo-dot {
            width: 32px;
            height: 32px;
            font-size: .72rem;
        }
        .article-hero h1 {
            font-size: 1.5rem;
        }
        .section-header h2 {
            font-size: 1.5rem;
        }
        .cta-banner {
            padding: 38px 18px;
            border-radius: 20px;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
    }

/* roulang page: category1 */
:root {
            --primary: #0e1e3d;
            --primary-dark: #0a162c;
            --accent: #f0b648;
            --accent-dark: #d99f2a;
            --bg-body: #f5f7fb;
            --bg-card: #ffffff;
            --text-main: #1b2440;
            --text-muted: #647087;
            --border-light: rgba(14, 30, 61, 0.08);
            --radius-xl: 22px;
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow-sm: 0 6px 24px rgba(14, 30, 61, 0.05);
            --shadow-md: 0 16px 40px rgba(14, 30, 61, 0.09);
            --shadow-lg: 0 30px 70px rgba(14, 30, 61, 0.14);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

        button {
            border: none;
            background: none;
            font-family: inherit;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(240, 182, 72, 0.55);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 78px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.02em;
        }

        .logo-badge,
        .logo-dot {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 7px;
            background: var(--accent);
            color: var(--primary);
            border-radius: 10px;
            font-size: 14px;
            font-weight: 800;
            letter-spacing: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 36px;
        }

        .main-nav a {
            position: relative;
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 600;
            padding: 8px 2px;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.35s ease;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--primary);
        }

        .main-nav a:hover::after,
        .main-nav a.active::after {
            transform: scaleX(1);
        }

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

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

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

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

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

        /* ===== Buttons ===== */
        .btn-main,
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 15px;
            padding: 13px 28px;
            border-radius: 60px;
            box-shadow: 0 8px 22px rgba(240, 182, 72, 0.32);
            transition: var(--transition);
        }

        .btn-main:hover,
        .btn-cta:hover {
            background: #f8c468;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(240, 182, 72, 0.4);
            color: var(--primary-dark);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.7);
            font-weight: 600;
            padding: 13px 28px;
            border-radius: 60px;
            transition: var(--transition);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: #fff;
            color: #fff;
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            color: #fff;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(10, 22, 44, 0.84), rgba(14, 30, 61, 0.72));
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
            padding-top: 64px;
            padding-bottom: 64px;
        }

        .hero-eyebrow {
            display: inline-block;
            background: rgba(240, 182, 72, 0.18);
            border: 1px solid rgba(240, 182, 72, 0.45);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 8px 20px;
            border-radius: 60px;
            margin-bottom: 20px;
        }

        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            letter-spacing: 0.02em;
            margin-bottom: 18px;
        }

        .page-hero .lead {
            font-size: 17px;
            max-width: 620px;
            margin: 0 auto 32px;
            color: rgba(255, 255, 255, 0.86);
        }

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

        /* ===== Section ===== */
        .section {
            padding: 88px 0;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 52px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--accent-dark);
            background: rgba(240, 182, 72, 0.12);
            border: 1px solid rgba(240, 182, 72, 0.35);
            padding: 6px 16px;
            border-radius: 60px;
            letter-spacing: 0.06em;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            margin-bottom: 0;
        }

        /* ===== Entry Cards ===== */
        .entry-card {
            height: 100%;
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .entry-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(240, 182, 72, 0.4);
        }

        .entry-card .card-img {
            height: 190px;
            overflow: hidden;
        }

        .entry-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .entry-card .card-body {
            padding: 28px 24px 32px;
            position: relative;
        }

        .card-index {
            position: absolute;
            top: -18px;
            right: 20px;
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
        }

        .entry-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .entry-card p {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== Prep Section ===== */
        .section-prep {
            background: #ffffff;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .prep-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: 100%;
            padding: 32px 28px;
            transition: var(--transition);
        }

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

        .prep-icon {
            width: 54px;
            height: 54px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: var(--primary);
            color: var(--accent);
            font-size: 22px;
            margin-bottom: 20px;
        }

        .prep-card h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--primary);
        }

        .prep-card p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 0;
        }

        /* ===== Steps Section ===== */
        .section-steps {
            position: relative;
            background: linear-gradient(160deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            overflow: hidden;
        }

        .section-steps::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }

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

        .section-steps .section-tag {
            color: var(--accent);
            border-color: rgba(240, 182, 72, 0.4);
            background: rgba(240, 182, 72, 0.12);
        }

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

        .section-steps .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }

        .steps-row {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 26px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            margin-bottom: 18px;
            transition: var(--transition);
        }

        .step-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateX(6px);
        }

        .step-num {
            flex: 0 0 42px;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--accent);
            color: var(--primary);
            font-size: 17px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .step-content h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .step-content p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            margin-bottom: 0;
        }

        .steps-media img {
            border-radius: var(--radius-xl);
            box-shadow: 0 30px 70px rgba(0, 0, 0, 0.25);
        }

        /* ===== FAQ ===== */
        .faq-accordion {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-accordion .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg) !important;
            margin-bottom: 16px;
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .faq-accordion .accordion-button {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            padding: 22px 28px;
            background: transparent;
            box-shadow: none;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(240, 182, 72, 0.08);
        }

        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%231b2440'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708'/%3e%3c/svg%3e");
            background-size: 14px;
        }

        .faq-accordion .accordion-body {
            color: var(--text-muted);
            font-size: 15px;
            padding: 6px 28px 24px;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .section-cta {
            background: #ffffff;
            border-bottom: 1px solid var(--border-light);
        }

        .cta-box {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 32px;
            padding: 64px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(240, 182, 72, 0.18);
            top: -160px;
            right: -100px;
        }

        .cta-box::after {
            content: "";
            position: absolute;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            bottom: -120px;
            left: -60px;
        }

        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-box p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            max-width: 520px;
            margin: 0 auto 28px;
        }

        .cta-box .btn-cta {
            position: relative;
            z-index: 2;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: #fff;
            padding-top: 64px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .brand-logo {
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-brand p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            max-width: 360px;
            margin-bottom: 0;
        }

        .site-footer h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            color: #fff;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.45);
            font-size: 14px;
        }

        .footer-bottom p {
            margin-bottom: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .section {
                padding: 70px 0;
            }

            .page-hero h1 {
                font-size: 34px;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .steps-row {
                grid-template-columns: 1fr;
                gap: 40px;
            }

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

        @media (max-width: 768px) {
            .header-inner {
                height: 66px;
            }

            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: 66px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                padding: 18px 24px 28px;
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                transition: transform 0.35s ease;
                border-radius: 0 0 20px 20px;
            }

            .main-nav.open {
                transform: translateY(0);
            }

            .main-nav a {
                width: 100%;
                padding: 12px 4px;
            }

            .page-hero {
                min-height: 360px;
            }

            .page-hero h1 {
                font-size: 28px;
            }

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

            .section {
                padding: 60px 0;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .steps-media {
                order: -1;
            }

            .cta-box {
                padding: 48px 28px;
            }

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

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

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 24px;
            }

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

            .hero-actions .btn-main,
            .hero-actions .btn-ghost {
                width: 100%;
                justify-content: center;
                padding: 12px 22px;
                font-size: 14px;
            }

            .section-head h2 {
                font-size: 22px;
            }

            .step-item {
                padding: 20px;
                flex-direction: column;
            }

            .step-num {
                flex: 0 0 36px;
                width: 36px;
                height: 36px;
                font-size: 15px;
            }

            .cta-box {
                padding: 42px 20px;
                border-radius: 24px;
            }

            .cta-box h2 {
                font-size: 24px;
            }

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

/* roulang page: category2 */
:root {
            --primary: #0a3d45;
            --primary-rgb: 10, 61, 69;
            --primary-dark: #062a31;
            --primary-light: #115763;
            --accent: #d4a236;
            --accent-rgb: 212, 162, 54;
            --accent-light: #efc96a;
            --white: #ffffff;
            --bg: #f4f6f5;
            --bg-deep: #eef1f0;
            --text: #17272c;
            --text-light: #4f6065;
            --text-muted: #7b8a8e;
            --border: #e2e8e6;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, .04);
            --shadow-md: 0 10px 32px rgba(0, 0, 0, .07);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, .1);
            --space-section: 96px;
            --space-section-md: 64px;
            --nav-height: 76px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsooft YaHei", "Noto Sans SC", "Open Sans", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 .5em;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text);
        }
        p {
            margin: 0 0 1em;
        }
        button {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: 1220px;
            margin-inline: auto;
            padding-inline: 24px;
        }

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

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 44px;
        }
        .section-head h2 {
            font-size: clamp(28px, 3.2vw, 38px);
            letter-spacing: -.01em;
            margin-bottom: 6px;
        }
        .section-head p {
            margin: 0;
            color: var(--text-muted);
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .82rem;
            font-weight: 600;
            letter-spacing: .08em;
            color: var(--primary);
            background: rgba(var(--primary-rgb), .06);
            border: 1px solid rgba(var(--primary-rgb), .12);
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .section-tag::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: .95rem;
            line-height: 1.5;
            border: none;
            transition: all .3s ease;
            cursor: pointer;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(var(--accent-rgb), .45);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: var(--white);
            box-shadow: 0 8px 24px rgba(var(--primary-rgb), .2);
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(var(--primary-rgb), .28);
            color: var(--white);
        }
        .btn-primary-custom:active {
            transform: translateY(0);
            box-shadow: 0 4px 14px rgba(var(--primary-rgb), .18);
        }
        .btn-accent-custom {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(var(--accent-rgb), .24);
        }
        .btn-accent-custom:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            color: var(--primary-dark);
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border: 2px solid rgba(var(--primary-rgb), .3);
        }
        .btn-outline-custom:hover {
            border-color: var(--primary);
            background: rgba(var(--primary-rgb), .04);
            transform: translateY(-1px);
        }
        .btn-white-custom {
            background: var(--white);
            color: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .12);
        }
        .btn-white-custom:hover {
            background: #f0f4f5;
            transform: translateY(-2px);
        }

        .badge-tag {
            display: inline-block;
            font-size: .75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            background: rgba(var(--primary-rgb), .08);
            color: var(--primary);
        }
        .badge-accent {
            background: var(--accent);
            color: var(--primary-dark);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, .9);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
        }
        .site-header .inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 1.32rem;
            font-weight: 800;
            letter-spacing: .01em;
            color: var(--primary);
        }
        .logo-dot {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            color: var(--white);
            font-size: .85rem;
            font-weight: 800;
            letter-spacing: -.02em;
            box-shadow: 0 6px 18px rgba(var(--primary-rgb), .25);
        }
        .main-nav {
            display: flex;
            gap: 38px;
        }
        .main-nav a {
            position: relative;
            font-size: .95rem;
            font-weight: 500;
            color: var(--text-light);
            padding: 10px 0;
            transition: color .25s ease;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 2px;
            width: 100%;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .3s cubic-bezier(.25, .8, .25, 1);
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a:hover::after {
            transform: scaleX(1);
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            transform: scaleX(1);
        }
        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border: 1px solid var(--border);
            border-radius: 12px;
            background: var(--white);
            color: var(--primary);
            font-size: 1.1rem;
            cursor: pointer;
            transition: all .25s ease;
        }
        .nav-toggle:hover {
            border-color: var(--primary);
            background: rgba(var(--primary-rgb), .04);
        }
        .nav-toggle:focus-visible {
            outline: 3px solid rgba(var(--primary-rgb), .3);
        }

        .page-hero {
            position: relative;
            padding: 140px 0 120px;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            color: var(--white);
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(4, 22, 28, .92) 0%, rgba(7, 32, 40, .78) 45%, rgba(11, 45, 54, .45) 100%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .82rem;
            font-weight: 600;
            letter-spacing: .1em;
            text-transform: uppercase;
            background: var(--accent);
            color: var(--primary-dark);
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 20px;
            box-shadow: 0 6px 18px rgba(var(--accent-rgb), .3);
        }
        .page-hero h1 {
            font-size: clamp(36px, 5.4vw, 58px);
            font-weight: 800;
            color: var(--white);
            margin-bottom: 18px;
            line-height: 1.15;
            letter-spacing: -.02em;
            max-width: 720px;
        }
        .page-hero p {
            font-size: 1.06rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, .88);
            max-width: 620px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 26px;
            margin-top: 44px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, .18);
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .9rem;
            color: rgba(255, 255, 255, .82);
        }
        .hero-meta i {
            color: var(--accent);
        }

        .intro-section {
            background: var(--white);
            border-bottom: 1px solid var(--border);
        }
        .intro-wrap {
            display: flex;
            align-items: center;
            gap: 64px;
        }
        .intro-copy {
            flex: 1;
        }
        .intro-visual {
            flex: 1;
        }
        .intro-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }
        .intro-points {
            margin-top: 26px;
        }
        .intro-points li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 14px;
            color: var(--text-light);
        }
        .intro-points li i {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(var(--primary-rgb), .08);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: .75rem;
            flex-shrink: 0;
            margin-top: 4px;
        }

        .posts-section {
            background: var(--bg);
        }
        .post-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: all .35s ease;
            box-shadow: var(--shadow-sm);
        }
        .post-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(var(--primary-rgb), .18);
        }
        .post-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--bg-deep);
        }
        .post-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .post-card:hover .card-img img {
            transform: scale(1.05);
        }
        .post-card .card-img .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, .92);
            color: var(--primary);
            font-size: .78rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 50px;
            backdrop-filter: blur(6px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, .08);
        }
        .post-card .card-body {
            padding: 24px 26px 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .post-card h3 {
            font-size: 1.12rem;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 12px;
            transition: color .25s ease;
        }
        .post-card:hover h3 {
            color: var(--primary);
        }
        .post-card .card-excerpt {
            color: var(--text-muted);
            font-size: .9rem;
            line-height: 1.75;
            flex: 1;
            margin-bottom: 18px;
        }
        .post-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: .82rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 16px;
            margin-top: auto;
        }
        .post-card .card-meta i {
            color: var(--accent);
            margin-right: 4px;
        }

        .focus-section {
            background: var(--primary-dark);
            color: var(--white);
            position: relative;
            overflow: hidden;
        }
        .focus-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(var(--accent-rgb), .08);
        }
        .focus-card {
            display: flex;
            align-items: center;
            gap: 60px;
            position: relative;
            z-index: 2;
        }
        .focus-img {
            flex: 1.1;
        }
        .focus-img img {
            border-radius: var(--radius-lg);
            box-shadow: 0 22px 50px rgba(0, 0, 0, .4);
            aspect-ratio: 16 / 11;
            object-fit: cover;
            width: 100%;
        }
        .focus-copy {
            flex: 1;
        }
        .focus-copy .section-tag {
            color: var(--accent);
            background: rgba(var(--accent-rgb), .1);
            border-color: rgba(var(--accent-rgb), .25);
        }
        .focus-copy h2 {
            font-size: clamp(28px, 3.2vw, 40px);
            color: var(--white);
            margin-bottom: 16px;
        }
        .focus-copy p {
            color: rgba(255, 255, 255, .82);
            margin-bottom: 24px;
        }
        .focus-points {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px 20px;
            margin-bottom: 28px;
        }
        .focus-points li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: .92rem;
            color: rgba(255, 255, 255, .88);
        }
        .focus-points li i {
            color: var(--accent);
        }

        .stats-section {
            background: var(--white);
        }
        .stat-block {
            text-align: center;
            padding: 40px 24px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            background: var(--white);
            height: 100%;
            transition: all .3s ease;
        }
        .stat-block:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(var(--primary-rgb), .15);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 10px;
        }
        .stat-number span {
            font-size: 1.4rem;
            color: var(--accent);
        }
        .stat-label {
            font-size: .92rem;
            color: var(--text-muted);
        }

        .tags-section {
            background: var(--bg);
        }
        .tags-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 12px;
        }
        .tags-wrap a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 50px;
            font-size: .92rem;
            font-weight: 500;
            color: var(--text-light);
            transition: all .3s ease;
        }
        .tags-wrap a:hover {
            background: var(--primary);
            color: var(--white);
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(var(--primary-rgb), .18);
        }
        .tags-wrap a i {
            font-size: .85rem;
            color: var(--accent);
        }
        .tags-wrap a:hover i {
            color: var(--accent-light);
        }

        .faq-section {
            background: var(--white);
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-wrap .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            background: var(--white);
            transition: box-shadow .3s ease;
        }
        .faq-wrap .accordion-item:has(.accordion-button:not(.collapsed)) {
            box-shadow: var(--shadow-md);
            border-color: rgba(var(--primary-rgb), .2);
        }
        .faq-wrap .accordion-button {
            padding: 20px 26px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            background: var(--white);
            border: none;
            box-shadow: none;
            transition: color .25s ease, background .25s ease;
        }
        .faq-wrap .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(var(--primary-rgb), .02);
            box-shadow: none;
        }
        .faq-wrap .accordion-button:focus {
            box-shadow: inset 0 0 0 2px rgba(var(--primary-rgb), .14);
        }
        .faq-wrap .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230a3d45'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
            transition: transform .3s ease;
        }
        .faq-wrap .accordion-button:not(.collapsed)::after {
            transform: rotate(-180deg);
        }
        .faq-wrap .accordion-body {
            padding: 0 26px 22px;
            color: var(--text-light);
            line-height: 1.8;
        }

        .cta-section {
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            position: relative;
            color: var(--white);
            padding: 100px 0;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(5, 30, 36, .88);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: var(--white);
            font-size: clamp(30px, 3.6vw, 44px);
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, .82);
            max-width: 600px;
            margin: 0 auto 34px;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, .78);
            padding: 70px 0 0;
            font-size: .92rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 42px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .site-footer h4 {
            color: var(--white);
            font-size: 1rem;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .footer-brand .brand-logo {
            color: var(--white);
            margin-bottom: 14px;
        }
        .footer-brand .brand-logo .logo-dot {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .footer-brand p {
            margin: 0;
            max-width: 360px;
            line-height: 1.8;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, .68);
            transition: color .25s ease, transform .25s ease;
        }
        .footer-links a:hover {
            color: var(--accent);
            transform: translateX(3px);
        }
        .footer-bottom {
            padding: 22px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: .82rem;
            color: rgba(255, 255, 255, .48);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, .58);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        @media (max-width: 991.98px) {
            :root {
                --space-section: 72px;
                --space-section-md: 48px;
            }
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                gap: 4px;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 24px 40px rgba(0, 0, 0, .1);
                display: none;
                z-index: 1029;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 8px;
                border-radius: 10px;
                color: var(--text-light);
                font-size: 1rem;
            }
            .main-nav a::after {
                display: none;
            }
            .main-nav a:hover,
            .main-nav a.active {
                background: rgba(var(--primary-rgb), .06);
                color: var(--primary);
                padding-left: 14px;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .page-hero {
                padding: 110px 0 90px;
            }
            .intro-wrap {
                flex-direction: column;
                gap: 40px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .focus-card {
                flex-direction: column;
                gap: 36px;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --space-section: 60px;
                --space-section-md: 40px;
            }
            .body {
                font-size: 15px;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                margin-bottom: 30px;
            }
            .page-hero h1 {
                font-size: 34px;
            }
            .page-hero p {
                font-size: .96rem;
            }
            .hero-meta {
                gap: 16px;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .focus-points {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .container {
                padding-inline: 18px;
            }
        }

        @media (max-width: 520px) {
            .page-hero {
                padding: 90px 0 70px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .stats-section .col-6 {
                padding-inline: 8px;
            }
            .stat-block {
                padding: 28px 14px;
            }
            .post-card .card-body {
                padding: 20px;
            }
            .cta-section {
                padding: 70px 0;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .brand-logo {
                font-size: 1.12rem;
            }
            .logo-dot {
                width: 32px;
                height: 32px;
                font-size: .78rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #0f2341;
            --primary-light: #1d3a63;
            --primary-dark: #0a1830;
            --accent: #f1842e;
            --accent-light: #ffa55c;
            --bg: #f5f7fb;
            --surface: #ffffff;
            --text: #1c2b3a;
            --text-muted: #5c6b7a;
            --border: #e3e9f2;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 12px rgba(15, 35, 65, 0.06);
            --shadow: 0 12px 36px rgba(15, 35, 65, 0.09);
            --shadow-lg: 0 22px 60px rgba(15, 35, 65, 0.14);
            --transition: all .3s ease;
        }

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

        body {
            margin: 0;
            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;
        }

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

        a {
            transition: var(--transition);
        }

        .container {
            max-width: 1180px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }

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

        .brand-logo {
            display: inline-flex;
            align-items: center;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            text-decoration: none;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .logo-dot {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 42px;
            height: 42px;
            padding: 0 8px;
            margin-right: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            border-radius: 12px;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0;
        }

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

        .main-nav a {
            position: relative;
            padding: 8px 20px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            text-decoration: none;
            border-radius: 30px;
            transition: var(--transition);
        }

        .main-nav a:hover {
            color: var(--primary);
            background: rgba(15, 35, 65, 0.04);
        }

        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
            background: rgba(15, 35, 65, 0.06);
        }

        .main-nav a.active::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 1px;
            transform: translateX(-50%);
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--accent);
        }

        .nav-toggle {
            display: none;
            border: none;
            background: none;
            font-size: 1.35rem;
            color: var(--text);
            padding: 6px 12px;
            cursor: pointer;
            border-radius: 8px;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(15, 35, 65, 0.05);
        }

        /* Hero */
        .category-hero {
            position: relative;
            padding: 116px 0 104px;
            color: #fff;
            background: linear-gradient(120deg, rgba(10, 24, 48, 0.94) 0%, rgba(29, 58, 99, 0.84) 100%), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            overflow: hidden;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            right: -80px;
            bottom: -80px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(241, 132, 46, 0.14);
            filter: blur(40px);
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 7px 20px;
            border-radius: 40px;
            font-size: 0.86rem;
            font-weight: 500;
            letter-spacing: 0.06em;
            color: rgba(255, 255, 255, 0.92);
            margin-bottom: 24px;
        }

        .category-hero h1 {
            font-size: 2.9rem;
            font-weight: 800;
            line-height: 1.2;
            margin: 0 0 20px;
            letter-spacing: 0.01em;
        }

        .category-hero h1 span {
            color: var(--accent-light);
        }

        .category-hero p {
            font-size: 1.08rem;
            max-width: 680px;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.8;
            margin: 0 0 32px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .breadcrumb-links {
            margin-top: 38px;
            font-size: 0.86rem;
            color: rgba(255, 255, 255, 0.55);
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .breadcrumb-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
        }

        .breadcrumb-links a:hover {
            color: #fff;
        }

        /* Buttons */
        .btn {
            border-radius: 40px;
            padding: 12px 32px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 2px solid transparent;
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        .btn-accent:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 14px 30px rgba(241, 132, 46, 0.35);
        }

        .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.65);
            color: #fff;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-3px);
        }

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

        .btn-outline-primary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        /* Sections */
        .section {
            padding: 92px 0;
        }

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

        .section-head {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 56px;
        }

        .section-eyebrow {
            display: inline-block;
            padding: 6px 18px;
            background: rgba(241, 132, 46, 0.12);
            color: var(--accent);
            border-radius: 30px;
            font-size: 0.83rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 2.15rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 14px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.04rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin: 0;
        }

        /* System Grid */
        .system-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .system-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 38px 30px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .system-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(241, 132, 46, 0.32);
        }

        .system-icon {
            width: 58px;
            height: 58px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 1.35rem;
            border-radius: 16px;
            margin-bottom: 22px;
        }

        .system-card h3 {
            font-size: 1.12rem;
            font-weight: 700;
            margin: 0 0 10px;
            color: var(--text);
        }

        .system-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin: 0;
        }

        .system-card .card-tip {
            display: inline-block;
            margin-top: 16px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent);
            background: rgba(241, 132, 46, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
        }

        /* Hot List */
        .hot-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .hot-item {
            display: flex;
            align-items: center;
            gap: 28px;
            padding: 30px 34px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .hot-item:hover {
            box-shadow: var(--shadow);
            border-color: rgba(241, 132, 46, 0.35);
            transform: translateX(6px);
        }

        .hot-index {
            font-size: 2.2rem;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1.5px var(--accent);
            min-width: 56px;
            text-align: center;
            line-height: 1;
        }

        .hot-content {
            flex: 1;
        }

        .hot-content h3 {
            font-size: 1.14rem;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--text);
        }

        .hot-content p {
            font-size: 0.93rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        .hot-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            margin-top: 10px;
        }

        .hot-tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(15, 35, 65, 0.06);
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-muted);
        }

        .hot-tag.hot-tag-accent {
            background: rgba(241, 132, 46, 0.1);
            color: var(--accent);
        }

        /* Steps */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .step-item {
            position: relative;
            padding: 38px 28px 34px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            text-align: center;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .step-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }

        .step-num {
            width: 52px;
            height: 52px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 1.28rem;
            font-weight: 700;
            border-radius: 50%;
            box-shadow: 0 8px 20px rgba(15, 35, 65, 0.22);
        }

        .step-item::after {
            content: "";
            position: absolute;
            top: 50%;
            right: -28px;
            width: 28px;
            height: 2px;
            background: linear-gradient(90deg, rgba(15, 35, 65, 0.2), rgba(15, 35, 65, 0.03));
        }

        .step-item:last-child::after {
            display: none;
        }

        .step-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 10px;
            color: var(--text);
        }

        .step-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* Stats */
        .stats-section {
            position: relative;
            padding: 96px 0;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 100%);
            color: #fff;
            overflow: hidden;
        }

        .stats-section::before {
            content: "";
            position: absolute;
            left: -60px;
            top: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            filter: blur(20px);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .stats-card .stats-num {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.1;
            color: #fff;
            margin-bottom: 8px;
        }

        .stats-card .stats-num em {
            font-style: normal;
            color: var(--accent-light);
        }

        .stats-card .stats-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.72);
            letter-spacing: 0.02em;
        }

        /* Guide Cards */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .guide-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .guide-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .guide-img {
            position: relative;
            height: 188px;
            overflow: hidden;
        }

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

        .guide-card:hover .guide-img img {
            transform: scale(1.06);
        }

        .guide-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 35, 65, 0.35), transparent 55%);
        }

        .guide-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            padding: 5px 14px;
            background: var(--accent);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 20px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.16);
        }

        .guide-body {
            padding: 24px 26px 28px;
        }

        .guide-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0 0 10px;
            color: var(--text);
        }

        .guide-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.62;
            margin: 0 0 16px;
        }

        .guide-link {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--accent);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .guide-link i {
            font-size: 0.78rem;
            transition: transform .3s;
        }

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

        /* FAQ */
        .faq-accordion {
            max-width: 840px;
            margin: 0 auto;
        }

        .faq-accordion .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius) !important;
            margin-bottom: 16px;
            overflow: hidden;
            background: var(--surface);
            box-shadow: var(--shadow-sm);
        }

        .faq-accordion .accordion-button {
            padding: 24px 30px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            background: var(--surface);
            box-shadow: none;
            border: none;
            border-radius: var(--radius) !important;
            transition: var(--transition);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--surface);
            color: var(--primary);
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
        }

        .faq-accordion .accordion-button::after {
            background-size: 16px;
            opacity: 0.6;
        }

        .faq-accordion .accordion-body {
            padding: 0 30px 28px;
            color: var(--text-muted);
            line-height: 1.75;
            font-size: 0.95rem;
        }

        /* CTA */
        .cta-section {
            position: relative;
            padding: 96px 0;
            background: linear-gradient(120deg, rgba(10, 24, 48, 0.93), rgba(29, 58, 99, 0.86)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            color: #fff;
            text-align: center;
            overflow: hidden;
        }

        .cta-section .cta-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin: 0 0 16px;
        }

        .cta-section .cta-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.75;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.68);
            padding: 84px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1.1fr;
            gap: 52px;
            margin-bottom: 52px;
        }

        .footer-brand .brand-logo {
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.55);
            max-width: 360px;
            margin: 0;
        }

        .footer-grid h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 20px;
            letter-spacing: 0.02em;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 26px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.42);
        }

        .footer-bottom p {
            margin: 0;
        }

        /* Responsive */
        @media (max-width: 991px) {
            .system-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .step-item::after {
                display: none;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                row-gap: 40px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }

            .category-hero h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 767px) {
            .header-inner {
                height: 68px;
            }

            .nav-toggle {
                display: block;
            }

            .main-nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                background: #fff;
                border-bottom: 1px solid var(--border);
                padding: 16px 20px 20px;
                gap: 6px;
                display: none;
                box-shadow: var(--shadow);
                z-index: 99;
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                padding: 13px 16px;
                text-align: center;
                font-size: 1rem;
            }

            .category-hero {
                padding: 78px 0 70px;
            }

            .category-hero h1 {
                font-size: 2rem;
            }

            .category-hero p {
                font-size: 1rem;
            }

            .section {
                padding: 62px 0;
            }

            .section-title {
                font-size: 1.7rem;
            }

            .system-grid,
            .guide-grid,
            .steps,
            .stats-grid {
                grid-template-columns: 1fr;
            }

            .hot-item {
                flex-direction: column;
                text-align: center;
                gap: 12px;
                padding: 26px 20px;
            }

            .hot-index {
                min-width: 0;
            }

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

            .cta-section {
                padding: 72px 0;
            }

            .cta-section .cta-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .brand-logo {
                font-size: 1.02rem;
            }

            .logo-dot {
                min-width: 36px;
                height: 36px;
                border-radius: 10px;
                font-size: 0.78rem;
                margin-right: 8px;
            }

            .category-hero h1 {
                font-size: 1.65rem;
            }

            .section-title {
                font-size: 1.45rem;
            }

            .hero-actions,
            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

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

            .system-card {
                padding: 30px 24px;
            }

            .guide-body {
                padding: 20px 20px 24px;
            }

            .faq-accordion .accordion-button {
                padding: 20px 22px;
                font-size: 0.96rem;
            }

            .faq-accordion .accordion-body {
                padding: 0 22px 22px;
            }
        }