/* roulang page: index */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-dark: #1a1a2e;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #333333;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border-color: #e0e0e0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
            --shadow-hover: 0 16px 48px rgba(0,0,0,0.18);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-light);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; outline: none; border: none; }
        ul, ol { list-style: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .container-wide { max-width: 1400px; margin: 0 auto; padding: 0 20px; }

        /* header & nav */
        .site-header {
            background: var(--bg-card);
            box-shadow: 0 2px 20px rgba(0,0,0,0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(12px);
            background: rgba(255,255,255,0.95);
            border-bottom: 1px solid rgba(0,0,0,0.04);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i { font-size: 1.4rem; -webkit-text-fill-color: var(--primary); }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-list a {
            padding: 10px 20px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover { background: rgba(230,57,70,0.08); color: var(--primary); }
        .nav-list a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(230,57,70,0.35);
        }
        .nav-list a.active:hover { background: var(--primary-dark); }
        .mega-trigger {
            position: relative;
            cursor: pointer;
        }
        .mega-dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            padding: 24px;
            min-width: 420px;
            display: none;
            z-index: 100;
            border: 1px solid rgba(0,0,0,0.04);
            margin-top: 8px;
        }
        .mega-trigger:hover .mega-dropdown { display: flex; gap: 20px; }
        .mega-col h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px; color: var(--text-light); margin-bottom: 12px; font-weight: 700; }
        .mega-col a { display: block; padding: 6px 0; font-size: 0.95rem; color: var(--text-body); font-weight: 500; }
        .mega-col a:hover { color: var(--primary); padding-left: 4px; }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important;
            padding: 10px 28px !important;
            border-radius: 40px !important;
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(230,57,70,0.3);
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(230,57,70,0.4); }
        .hamburger { display: none; font-size: 1.6rem; cursor: pointer; color: var(--text-dark); background: none; padding: 8px; }

        /* hero */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,26,46,0.75) 0%, rgba(230,57,70,0.55) 100%);
            z-index: 1;
        }
        .hero-content { position: relative; z-index: 2; text-align: center; max-width: 820px; padding: 40px 20px; }
        .hero-badge {
            display: inline-block;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(8px);
            padding: 8px 24px;
            border-radius: 40px;
            color: #fff;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 28px;
            border: 1px solid rgba(255,255,255,0.2);
        }
        .hero h1 { font-size: 3.8rem; font-weight: 900; color: #fff; line-height: 1.2; margin-bottom: 20px; letter-spacing: -1px; }
        .hero h1 span { background: linear-gradient(135deg, #f4a261, #e63946); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p { font-size: 1.25rem; color: rgba(255,255,255,0.85); max-width: 640px; margin: 0 auto 36px; line-height: 1.8; }
        .hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 16px 44px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 8px 30px rgba(230,57,70,0.4);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(230,57,70,0.5); }
        .btn-secondary {
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            color: #fff;
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.1rem;
            border: 2px solid rgba(255,255,255,0.3);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-secondary:hover { background: rgba(255,255,255,0.2); border-color: #fff; transform: translateY(-3px); }
        .hero-stats {
            display: flex;
            gap: 40px;
            justify-content: center;
            margin-top: 50px;
            flex-wrap: wrap;
        }
        .hero-stat { text-align: center; color: #fff; }
        .hero-stat .num { font-size: 2.4rem; font-weight: 900; line-height: 1.2; }
        .hero-stat .label { font-size: 0.9rem; opacity: 0.8; margin-top: 4px; }

        /* section common */
        .section { padding: 100px 0; }
        .section-alt { background: var(--bg-card); }
        .section-dark { background: var(--bg-dark); color: #fff; }
        .section-title { text-align: center; margin-bottom: 60px; }
        .section-title h2 { font-size: 2.6rem; font-weight: 800; color: var(--text-dark); letter-spacing: -0.5px; }
        .section-title p { font-size: 1.1rem; color: var(--text-light); max-width: 600px; margin: 12px auto 0; }
        .section-dark .section-title h2 { color: #fff; }
        .section-dark .section-title p { color: rgba(255,255,255,0.7); }
        .title-accent { display: inline-block; background: var(--primary); width: 60px; height: 4px; border-radius: 4px; margin-bottom: 16px; }

        /* features */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 40px 30px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid rgba(0,0,0,0.04);
            text-align: center;
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .feature-icon {
            width: 72px;
            height: 72px;
            background: linear-gradient(135deg, rgba(230,57,70,0.1), rgba(230,57,70,0.05));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px;
            font-size: 2rem;
            color: var(--primary);
        }
        .feature-card h3 { font-size: 1.3rem; font-weight: 700; color: var(--text-dark); margin-bottom: 12px; }
        .feature-card p { font-size: 0.95rem; color: var(--text-light); line-height: 1.7; }

        /* categories */
        .cat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .cat-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            background: var(--bg-card);
            border: 1px solid rgba(0,0,0,0.04);
            display: flex;
            align-items: stretch;
            min-height: 200px;
        }
        .cat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .cat-card-img {
            width: 40%;
            min-height: 200px;
            background-size: cover;
            background-position: center;
        }
        .cat-card-body { padding: 28px 24px; flex: 1; display: flex; flex-direction: column; justify-content: center; }
        .cat-card-body .tag { display: inline-block; background: rgba(230,57,70,0.1); color: var(--primary); padding: 4px 14px; border-radius: 40px; font-size: 0.8rem; font-weight: 600; margin-bottom: 10px; width: fit-content; }
        .cat-card-body h3 { font-size: 1.3rem; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; }
        .cat-card-body p { font-size: 0.92rem; color: var(--text-light); line-height: 1.6; margin-bottom: 14px; }
        .cat-card-body .btn-link { color: var(--primary); font-weight: 600; font-size: 0.95rem; display: inline-flex; align-items: center; gap: 6px; }
        .cat-card-body .btn-link:hover { gap: 12px; }

        /* data / numbers */
        .data-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .data-card {
            text-align: center;
            background: rgba(255,255,255,0.06);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-md);
            padding: 40px 20px;
            border: 1px solid rgba(255,255,255,0.08);
            transition: var(--transition);
        }
        .data-card:hover { background: rgba(255,255,255,0.10); transform: translateY(-4px); }
        .data-card .num { font-size: 2.8rem; font-weight: 900; color: #fff; line-height: 1.2; }
        .data-card .num span { color: var(--accent); }
        .data-card .label { font-size: 1rem; color: rgba(255,255,255,0.7); margin-top: 8px; font-weight: 500; }

        /* content list (cms) */
        .content-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .content-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid rgba(0,0,0,0.04);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
        .content-card .card-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .content-card .card-img .card-cat {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--primary);
            color: #fff;
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .content-card .card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
        .content-card .card-body h3 { font-size: 1.15rem; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; line-height: 1.4; }
        .content-card .card-body p { font-size: 0.92rem; color: var(--text-light); line-height: 1.7; flex: 1; }
        .content-card .card-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--border-color); font-size: 0.85rem; color: var(--text-light); }
        .content-card .card-meta a { color: var(--primary); font-weight: 600; }
        .content-card .card-meta a:hover { color: var(--primary-dark); }
        .empty-msg { text-align: center; padding: 60px 20px; color: var(--text-light); font-size: 1.1rem; grid-column: 1 / -1; }

        /* steps */
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .step-card { text-align: center; position: relative; }
        .step-num {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 8px 24px rgba(230,57,70,0.3);
        }
        .step-card h4 { font-size: 1.1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; }
        .step-card p { font-size: 0.92rem; color: var(--text-light); line-height: 1.6; }
        .step-arrow { position: absolute; right: -12px; top: 20px; font-size: 1.6rem; color: var(--primary-light); opacity: 0.3; }
        .steps-grid .step-card:last-child .step-arrow { display: none; }

        /* faq */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(0,0,0,0.04);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-question {
            padding: 20px 28px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { transition: var(--transition); color: var(--primary); font-size: 1.1rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 28px 20px;
            color: var(--text-light);
            line-height: 1.8;
            display: none;
            font-size: 0.95rem;
        }
        .faq-item.open .faq-answer { display: block; }

        /* cta */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--bg-dark) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10;
            z-index: 0;
        }
        .cta-content { position: relative; z-index: 1; }
        .cta-content h2 { font-size: 2.6rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
        .cta-content p { font-size: 1.15rem; color: rgba(255,255,255,0.75); max-width: 560px; margin: 0 auto 32px; }
        .cta-content .btn-primary { font-size: 1.15rem; padding: 18px 52px; }

        /* footer */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 30px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { font-size: 1.5rem; margin-bottom: 16px; -webkit-text-fill-color: #fff; background: none; color: #fff; }
        .footer-brand .logo i { -webkit-text-fill-color: var(--primary); color: var(--primary); }
        .footer-brand p { font-size: 0.92rem; line-height: 1.8; opacity: 0.7; max-width: 320px; }
        .footer-col h4 { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 18px; }
        .footer-col a { display: block; padding: 5px 0; font-size: 0.92rem; opacity: 0.7; transition: var(--transition); }
        .footer-col a:hover { opacity: 1; color: var(--primary); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            opacity: 0.6;
        }
        .footer-bottom a { color: rgba(255,255,255,0.8); }
        .footer-bottom a:hover { color: var(--primary); }

        /* mobile */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .content-grid { grid-template-columns: repeat(2, 1fr); }
            .data-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
            .step-arrow { display: none; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 820px) {
            .hero h1 { font-size: 2.8rem; }
            .section-title h2 { font-size: 2.2rem; }
            .cat-grid { grid-template-columns: 1fr; }
            .cat-card-img { width: 30%; min-height: 160px; }
        }
        @media (max-width: 768px) {
            .nav-list { display: none; }
            .hamburger { display: block; }
            .nav-list.active { display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: var(--bg-card); padding: 20px; box-shadow: var(--shadow-lg); border-radius: 0 0 var(--radius-md) var(--radius-md); gap: 8px; }
            .nav-list.active a { width: 100%; text-align: center; }
            .mega-dropdown { display: none !important; }
            .hero { min-height: 70vh; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
            .features-grid { grid-template-columns: 1fr; }
            .content-grid { grid-template-columns: 1fr; }
            .data-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .data-card .num { font-size: 2rem; }
            .steps-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .section { padding: 60px 0; }
            .hero-stats { gap: 24px; }
            .hero-stat .num { font-size: 1.8rem; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.8rem; }
            .hero-btns { flex-direction: column; align-items: center; }
            .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
            .data-grid { grid-template-columns: 1fr; }
            .cat-card { flex-direction: column; }
            .cat-card-img { width: 100%; min-height: 160px; }
            .section-title h2 { font-size: 1.8rem; }
            .cta-content h2 { font-size: 1.8rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

/* roulang page: category1 */
:root {
            --primary: #0f6cbf;
            --primary-dark: #0a4f8a;
            --primary-light: #e8f0fe;
            --secondary: #f59e0b;
            --secondary-light: #fef3c7;
            --accent: #10b981;
            --bg: #f8fafc;
            --bg-card: #ffffff;
            --text: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --shadow: 0 4px 24px rgba(15, 108, 191, 0.08);
            --shadow-hover: 0 12px 40px rgba(15, 108, 191, 0.16);
            --radius: 16px;
            --radius-sm: 8px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            transition: var(--transition);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header & Nav */
        .site-header {
            background: #ffffff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--secondary);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-list>a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            position: relative;
            white-space: nowrap;
        }
        .nav-list>a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-list>a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(15, 108, 191, 0.3);
        }
        .nav-list>a.nav-cta {
            background: var(--secondary);
            color: #1e293b;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 50px;
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.35);
            margin-left: 8px;
        }
        .nav-list>a.nav-cta:hover {
            background: #e48f00;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.45);
        }
        .nav-list>a.nav-cta i {
            margin-right: 6px;
        }
        .mega-trigger {
            position: relative;
            cursor: pointer;
        }
        .mega-dropdown {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
            padding: 24px 28px;
            min-width: 480px;
            gap: 32px;
            z-index: 200;
            border: 1px solid var(--border);
            margin-top: 8px;
            grid-template-columns: 1fr 1fr;
        }
        .mega-trigger:hover .mega-dropdown,
        .mega-trigger:focus-within .mega-dropdown {
            display: grid;
        }
        .mega-col h4 {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--text-weak);
            margin-bottom: 12px;
            font-weight: 600;
        }
        .mega-col a {
            display: block;
            padding: 6px 0;
            font-size: 0.95rem;
            color: var(--text);
            border-radius: 4px;
            transition: var(--transition);
        }
        .mega-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text);
            cursor: pointer;
            padding: 4px 8px;
        }
        /* Hero / Banner */
        .page-banner {
            background: linear-gradient(135deg, #0a4f8a 0%, #0f6cbf 60%, #1a8fe0 100%);
            padding: 80px 0 72px;
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb span {
            color: #fff;
        }
        /* Section */
        .section {
            padding: 72px 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            text-align: center;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-weak);
            text-align: center;
            max-width: 600px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }
        .section-light {
            background: #ffffff;
        }
        .section-alt {
            background: var(--primary-light);
        }
        /* Cards Grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 32px 28px;
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 18px;
            background: var(--primary);
        }
        .card-icon.gold {
            background: var(--secondary);
        }
        .card-icon.green {
            background: var(--accent);
        }
        .card-icon.purple {
            background: #8b5cf6;
        }
        .card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text);
        }
        .card p {
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.7;
        }
        .card img {
            border-radius: var(--radius-sm);
            margin-bottom: 18px;
            width: 100%;
            object-fit: cover;
            aspect-ratio: 16 / 9;
        }
        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            position: relative;
            transition: var(--transition);
        }
        .step-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            display: block;
            width: 44px;
            height: 44px;
            line-height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 auto 16px;
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-weak);
        }
        /* Feature List */
        .feature-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px 40px;
            max-width: 800px;
            margin: 0 auto;
        }
        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .feature-item:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(15, 108, 191, 0.08);
        }
        .feature-item i {
            font-size: 1.2rem;
            color: var(--accent);
            margin-top: 3px;
            flex-shrink: 0;
        }
        .feature-item span {
            font-size: 0.95rem;
            font-weight: 500;
        }
        /* FAQ */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            list-style: none;
            transition: var(--transition);
        }
        .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: 0.8rem;
            color: var(--text-weak);
            transition: var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item[open] summary {
            color: var(--primary);
            background: var(--primary-light);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.8;
        }
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #0a4f8a 0%, #0f6cbf 60%, #1a8fe0 100%);
            padding: 64px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
            margin: 0 auto 28px;
        }
        .cta-btn {
            display: inline-block;
            background: var(--secondary);
            color: #1e293b;
            font-weight: 700;
            font-size: 1.1rem;
            padding: 14px 44px;
            border-radius: 50px;
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.4);
            transition: var(--transition);
        }
        .cta-btn:hover {
            background: #e48f00;
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.55);
        }
        /* Footer */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 14px;
        }
        .footer-brand .logo i {
            color: var(--secondary);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-list {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
                gap: 4px;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list>a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-list>a.nav-cta {
                margin-left: 0;
                text-align: center;
                margin-top: 8px;
            }
            .mega-dropdown {
                position: static;
                box-shadow: none;
                border: none;
                padding: 12px 0 12px 16px;
                min-width: auto;
                grid-template-columns: 1fr;
                background: transparent;
                margin-top: 0;
                display: none;
            }
            .mega-trigger:hover .mega-dropdown,
            .mega-trigger:focus-within .mega-dropdown {
                display: grid;
            }
            .nav-toggle {
                display: block;
            }
            .header-inner {
                height: 64px;
            }
            .page-banner {
                padding: 56px 0 48px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .feature-list {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .logo {
                font-size: 1.2rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .card {
                padding: 24px 20px;
            }
            .step-item {
                padding: 24px 16px 20px;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-btn {
                padding: 12px 32px;
                font-size: 1rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #1e3a5f;
            --primary-light: #2a5298;
            --primary-dark: #0f2440;
            --accent: #f0a500;
            --accent-light: #ffb82e;
            --accent-dark: #c98800;
            --bg-light: #f8f9fc;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-muted: #6b7280;
            --text-light: #9ca3af;
            --border: #e5e7eb;
            --border-light: #f0f0f5;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: var(--primary-light);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
            backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.96);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 32px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary-dark);
            white-space: nowrap;
        }

        .logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }

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

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-list>a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-dark);
            transition: var(--transition);
            position: relative;
        }

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

        .nav-list>a.active {
            background: var(--primary);
            color: #fff;
        }

        .nav-list>a.active:hover {
            background: var(--primary-light);
            color: #fff;
        }

        .nav-cta {
            background: var(--accent) !important;
            color: var(--text-dark) !important;
            padding: 8px 22px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-cta:hover {
            background: var(--accent-light) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(240, 165, 0, 0.35);
        }

        .mega-trigger {
            position: relative;
            cursor: pointer;
        }

        .mega-dropdown {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            padding: 24px 28px;
            min-width: 480px;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            border: 1px solid var(--border-light);
            margin-top: 8px;
            z-index: 200;
        }

        .mega-trigger:hover .mega-dropdown,
        .mega-trigger:focus-within .mega-dropdown {
            display: grid;
        }

        .mega-col h4 {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--text-muted);
            margin-bottom: 12px;
            font-weight: 600;
        }

        .mega-col a {
            display: block;
            padding: 6px 0;
            font-size: 0.92rem;
            color: var(--text-dark);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .mega-col a:last-child {
            border-bottom: none;
        }

        .mega-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
        }

        .mobile-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }

        @media (max-width: 900px) {
            .mobile-toggle {
                display: block;
            }

            .nav-list {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-card);
                flex-direction: column;
                padding: 16px 24px 24px;
                box-shadow: var(--shadow-lg);
                border-top: 1px solid var(--border-light);
                gap: 4px;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }

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

            .nav-list>a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }

            .mega-dropdown {
                position: static;
                box-shadow: none;
                padding: 12px 16px;
                min-width: auto;
                grid-template-columns: 1fr;
                gap: 16px;
                border: none;
                background: var(--bg-light);
                border-radius: var(--radius-sm);
                margin-top: 4px;
            }

            .mega-trigger:hover .mega-dropdown,
            .mega-trigger:focus-within .mega-dropdown {
                display: grid;
            }

            .nav-cta {
                justify-content: center;
                margin-top: 8px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 64px;
                gap: 16px;
            }

            .logo {
                font-size: 1.15rem;
            }

            .logo i {
                font-size: 1.3rem;
            }
        }

        /* ===== Article Hero ===== */
        .article-hero {
            background: var(--primary-dark);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.18;
            pointer-events: none;
        }

        .article-hero .container {
            position: relative;
            z-index: 2;
        }

        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .article-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
        }

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

        .article-hero .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.35);
        }

        .article-hero h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            max-width: 880px;
            margin-bottom: 16px;
        }

        .article-hero .meta-line {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            align-items: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
        }

        .article-hero .meta-line i {
            margin-right: 5px;
        }

        .article-hero .meta-line .badge {
            background: var(--accent);
            color: var(--text-dark);
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .article-hero {
                padding: 40px 0 36px;
            }

            .article-hero h1 {
                font-size: 1.6rem;
            }

            .article-hero .meta-line {
                gap: 12px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.3rem;
            }
        }

        /* ===== Article Content ===== */
        .article-main {
            padding: 48px 0 64px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }

        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px 44px;
            border: 1px solid var(--border-light);
        }

        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: #2d2d3f;
        }

        .article-body .content p {
            margin-bottom: 1.4em;
        }

        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-md);
        }

        .article-body .content h2,
        .article-body .content h3 {
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            font-weight: 700;
            color: var(--primary-dark);
        }

        .article-body .content h2 {
            font-size: 1.5rem;
        }

        .article-body .content h3 {
            font-size: 1.2rem;
        }

        .article-body .content ul,
        .article-body .content ol {
            padding-left: 1.6em;
            margin-bottom: 1.4em;
        }

        .article-body .content li {
            margin-bottom: 0.5em;
        }

        .article-body .content blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg-light);
            padding: 16px 24px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }

        .article-body .content a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .article-body .content a:hover {
            color: var(--accent-dark);
        }

        .article-body .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }

        .article-body .tag-list .tag {
            background: var(--bg-light);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--text-muted);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .article-body .tag-list .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .article-body .share-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }

        .article-body .share-bar span {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .article-body .share-bar a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-light);
            color: var(--text-muted);
            border: 1px solid var(--border);
            transition: var(--transition);
            font-size: 1rem;
        }

        .article-body .share-bar a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            border: 1px solid var(--border-light);
        }

        .sidebar-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h3 i {
            color: var(--accent);
        }

        .sidebar-card .list-item {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }

        .sidebar-card .list-item:last-child {
            border-bottom: none;
        }

        .sidebar-card .list-item img {
            width: 68px;
            height: 52px;
            border-radius: 6px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .sidebar-card .list-item .info h4 {
            font-size: 0.88rem;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-dark);
            transition: var(--transition);
        }

        .sidebar-card .list-item .info h4:hover {
            color: var(--primary);
        }

        .sidebar-card .list-item .info .date {
            font-size: 0.72rem;
            color: var(--text-light);
            margin-top: 4px;
        }

        .sidebar-card .cta-box {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            border-radius: var(--radius-sm);
            padding: 20px 18px;
            text-align: center;
            color: #fff;
            margin-top: 8px;
        }

        .sidebar-card .cta-box p {
            font-size: 0.9rem;
            opacity: 0.9;
            margin-bottom: 12px;
        }

        .sidebar-card .cta-box .btn {
            display: inline-block;
            background: var(--accent);
            color: var(--text-dark);
            padding: 10px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .sidebar-card .cta-box .btn:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(240, 165, 0, 0.4);
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr 280px;
                gap: 32px;
            }

            .article-body {
                padding: 28px 30px;
            }
        }

        @media (max-width: 840px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .sidebar-card .cta-box {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 600px) {
            .article-body {
                padding: 20px 18px;
            }

            .article-body .content {
                font-size: 0.98rem;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Related Section ===== */
        .related-section {
            background: var(--bg-card);
            border-top: 1px solid var(--border-light);
            padding: 48px 0;
        }

        .related-section .section-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }

        .related-card .info {
            padding: 18px 20px 20px;
        }

        .related-card .info h4 {
            font-size: 1rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 6px;
            color: var(--text-dark);
        }

        .related-card .info h4:hover {
            color: var(--primary);
        }

        .related-card .info .date {
            font-size: 0.78rem;
            color: var(--text-light);
        }

        @media (max-width: 900px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 560px) {
            .related-grid {
                grid-template-columns: 1fr;
            }

            .related-card {
                display: flex;
                align-items: center;
            }

            .related-card img {
                width: 120px;
                height: 90px;
                flex-shrink: 0;
            }

            .related-card .info {
                padding: 12px 16px;
            }
        }

        /* ===== Error State ===== */
        .error-state {
            text-align: center;
            padding: 60px 20px;
        }

        .error-state i {
            font-size: 3rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }

        .error-state h2 {
            font-size: 1.6rem;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .error-state p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .error-state .btn-back {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
        }

        .error-state .btn-back:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(30, 58, 95, 0.3);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 52px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo {
            color: #fff;
            font-size: 1.25rem;
            margin-bottom: 14px;
        }

        .footer-brand .logo i {
            color: var(--accent);
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            opacity: 0.7;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-col a {
            display: block;
            font-size: 0.85rem;
            padding: 5px 0;
            opacity: 0.7;
            transition: var(--transition);
        }

        .footer-col a:hover {
            opacity: 1;
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-col a i {
            margin-right: 8px;
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.8rem;
            opacity: 0.6;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.8);
        }

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

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 560px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Utility ===== */
        .text-accent {
            color: var(--accent);
        }
        .bg-accent {
            background: var(--accent);
        }
        .transition {
            transition: var(--transition);
        }
        .shadow-hover:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        /* Smooth fade-in */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(16px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-up {
            animation: fadeUp 0.6s ease forwards;
        }