/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #1B2A4A;
            --color-primary-light: #2C4068;
            --color-primary-dark: #0F1A30;
            --color-accent: #C9A96E;
            --color-accent-light: #DFC48A;
            --color-accent-dark: #A8894E;
            --color-bg: #F8F9FA;
            --color-bg-alt: #EDEFF3;
            --color-bg-dark: #1B2A4A;
            --color-text: #1A1A2E;
            --color-text-light: #5A6270;
            --color-text-muted: #8E95A2;
            --color-text-on-dark: #F0F2F5;
            --color-border: #DEE2E7;
            --color-border-light: #E8EBEE;
            --color-white: #FFFFFF;
            --color-success: #2D9B6E;
            --color-warning: #E8A84C;
            --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --font-size-xs: 0.75rem;
            --font-size-sm: 0.875rem;
            --font-size-base: 1rem;
            --font-size-lg: 1.125rem;
            --font-size-xl: 1.25rem;
            --font-size-2xl: 1.5rem;
            --font-size-3xl: 2rem;
            --font-size-4xl: 2.5rem;
            --font-size-5xl: 3.25rem;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
            --shadow-xl: 0 24px 48px rgba(0,0,0,0.10);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;
            --transition: 0.25s ease;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-primary);
            font-size: var(--font-size-base);
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            margin: 0;
            padding-top: var(--nav-height);
        }
        a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--color-accent); }
        a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; }
        h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.3; color: var(--color-primary); margin-top: 0; }
        p { margin-top: 0; color: var(--color-text-light); }
        ul, ol { padding-left: 1.25rem; }
        ::selection { background: var(--color-accent); color: var(--color-white); }

        /* ===== Container ===== */
        .container { max-width: 1200px; padding-left: 1.5rem; padding-right: 1.5rem; margin: 0 auto; width: 100%; }
        .container-narrow { max-width: 880px; }

        /* ===== Typography Helpers ===== */
        .text-accent { color: var(--color-accent); }
        .text-primary { color: var(--color-primary); }
        .text-muted { color: var(--color-text-muted); }
        .text-sm { font-size: var(--font-size-sm); }
        .text-lg { font-size: var(--font-size-lg); }
        .text-xl { font-size: var(--font-size-xl); }
        .fw-medium { font-weight: 500; }
        .fw-semibold { font-weight: 600; }
        .section-title { font-size: var(--font-size-3xl); margin-bottom: var(--space-sm); letter-spacing: -0.01em; }
        .section-subtitle { font-size: var(--font-size-lg); color: var(--color-text-light); max-width: 640px; margin-bottom: var(--space-md); }
        .section-header { text-align: center; margin-bottom: var(--space-lg); }

        /* ===== Spacing ===== */
        .section-padding { padding: var(--space-xl) 0; }
        .section-padding-sm { padding: var(--space-lg) 0; }
        .gap-sm { gap: var(--space-sm); }
        .gap-md { gap: var(--space-md); }
        .mt-sm { margin-top: var(--space-sm); }
        .mt-md { margin-top: var(--space-md); }
        .mb-sm { margin-bottom: var(--space-sm); }
        .mb-md { margin-bottom: var(--space-md); }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--nav-height);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition), background var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
            background: rgba(255,255,255,0.98);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            font-size: var(--font-size-xl);
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .site-logo:hover { color: var(--color-primary); }
        .site-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: var(--color-accent);
            border-radius: var(--radius-sm);
            font-size: var(--font-size-lg);
            font-weight: 700;
        }
        .navbar-nav { display: flex; align-items: center; gap: 0.25rem; list-style: none; margin: 0; padding: 0; }
        .navbar-nav .nav-item { position: relative; }
        .navbar-nav .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1rem;
            font-size: var(--font-size-sm);
            font-weight: 500;
            color: var(--color-text-light);
            text-decoration: none;
            border-radius: var(--radius-sm);
            transition: color var(--transition), background var(--transition);
            position: relative;
            letter-spacing: 0.01em;
        }
        .navbar-nav .nav-link:hover { color: var(--color-primary); background: rgba(27,42,74,0.05); }
        .navbar-nav .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 1rem;
            right: 1rem;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
        }
        .navbar-nav .nav-link:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.25rem;
            background: var(--color-primary);
            color: var(--color-white) !important;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: var(--font-size-sm);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            margin-left: 0.5rem;
        }
        .nav-cta-btn:hover { background: var(--color-primary-light); transform: translateY(-1px); box-shadow: var(--shadow-md); color: var(--color-white) !important; }
        .nav-cta-btn:active { transform: translateY(0); }
        .navbar-toggler {
            display: none;
            background: none;
            border: none;
            padding: 0.5rem;
            color: var(--color-primary);
            font-size: 1.5rem;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .navbar-toggler:hover { background: rgba(27,42,74,0.05); }
        .navbar-toggler:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

        /* ===== Hero ===== */
        .hero {
            padding: var(--space-xl) 0 var(--space-lg);
            background: linear-gradient(135deg, #F0F4F8 0%, #E8ECF2 100%);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(201,169,110,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(27,42,74,0.04) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero .container { position: relative; z-index: 1; }
        .hero-content { max-width: 720px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.3rem 1rem;
            background: rgba(201,169,110,0.15);
            color: var(--color-accent-dark);
            border-radius: 50px;
            font-size: var(--font-size-xs);
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: var(--space-sm);
            border: 1px solid rgba(201,169,110,0.2);
        }
        .hero-title {
            font-size: var(--font-size-5xl);
            font-weight: 700;
            line-height: 1.15;
            color: var(--color-primary);
            margin-bottom: var(--space-sm);
            letter-spacing: -0.02em;
        }
        .hero-title .highlight { color: var(--color-accent-dark); }
        .hero-desc {
            font-size: var(--font-size-lg);
            color: var(--color-text-light);
            max-width: 580px;
            margin-bottom: var(--space-md);
            line-height: 1.8;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-sm); align-items: center; }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-lg);
            margin-top: var(--space-lg);
            padding-top: var(--space-md);
            border-top: 1px solid var(--color-border-light);
        }
        .hero-stat-item {}
        .hero-stat-number { font-size: var(--font-size-3xl); font-weight: 700; color: var(--color-primary); line-height: 1.2; }
        .hero-stat-label { font-size: var(--font-size-sm); color: var(--color-text-muted); }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.65rem 1.75rem;
            font-size: var(--font-size-sm);
            font-weight: 600;
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition), color var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
        .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
        }
        .btn-primary:hover { background: var(--color-primary-light); transform: translateY(-2px); box-shadow: var(--shadow-md); color: var(--color-white); }
        .btn-primary:active { transform: translateY(0); }
        .btn-accent {
            background: var(--color-accent);
            color: var(--color-white);
        }
        .btn-accent:hover { background: var(--color-accent-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); color: var(--color-white); }
        .btn-accent:active { transform: translateY(0); }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-border);
        }
        .btn-outline:hover { border-color: var(--color-primary); background: rgba(27,42,74,0.03); transform: translateY(-2px); }
        .btn-outline:active { transform: translateY(0); }
        .btn-lg { padding: 0.85rem 2.25rem; font-size: var(--font-size-base); border-radius: var(--radius-lg); }
        .btn-sm { padding: 0.4rem 1rem; font-size: var(--font-size-xs); border-radius: var(--radius-sm); }

        /* ===== Cards ===== */
        .card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
            overflow: hidden;
        }
        .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .card-body { padding: var(--space-md); }
        .card-title { font-size: var(--font-size-xl); margin-bottom: var(--space-xs); }
        .card-text { font-size: var(--font-size-sm); color: var(--color-text-light); margin-bottom: var(--space-sm); }
        .card-tag {
            display: inline-block;
            padding: 0.2rem 0.75rem;
            background: rgba(201,169,110,0.12);
            color: var(--color-accent-dark);
            border-radius: 50px;
            font-size: var(--font-size-xs);
            font-weight: 600;
        }
        .card-meta { font-size: var(--font-size-xs); color: var(--color-text-muted); display: flex; align-items: center; gap: 0.75rem; }
        .card-link { text-decoration: none; color: inherit; display: block; }
        .card-link:hover .card-title { color: var(--color-accent-dark); }
        .card-link:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: var(--radius-lg); }

        /* ===== Category Cards ===== */
        .category-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            padding: var(--space-md);
            text-align: center;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            cursor: default;
        }
        .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-accent); }
        .category-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            background: rgba(27,42,74,0.06);
            border-radius: var(--radius-md);
            font-size: 1.75rem;
            color: var(--color-primary);
            margin-bottom: var(--space-sm);
            transition: background var(--transition), color var(--transition);
        }
        .category-card:hover .category-icon { background: var(--color-primary); color: var(--color-accent); }
        .category-title { font-size: var(--font-size-lg); font-weight: 600; margin-bottom: var(--space-xs); }
        .category-desc { font-size: var(--font-size-sm); color: var(--color-text-light); }

        /* ===== Stats / Data Block ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
        }
        .stat-block {
            text-align: center;
            padding: var(--space-md);
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .stat-block:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .stat-number { font-size: var(--font-size-4xl); font-weight: 700; color: var(--color-primary); line-height: 1.2; }
        .stat-label { font-size: var(--font-size-sm); color: var(--color-text-muted); margin-top: var(--space-xs); }

        /* ===== Steps / Process ===== */
        .step-item {
            display: flex;
            gap: var(--space-md);
            align-items: flex-start;
            padding: var(--space-md);
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .step-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: var(--color-primary);
            color: var(--color-white);
            border-radius: var(--radius-md);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: var(--font-size-xl);
            font-weight: 700;
        }
        .step-content h4 { font-size: var(--font-size-lg); margin-bottom: 0.25rem; }
        .step-content p { font-size: var(--font-size-sm); margin-bottom: 0; }

        /* ===== FAQ ===== */
        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
            padding: var(--space-sm) 0;
        }
        .faq-item:first-child { padding-top: 0; }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            background: none;
            border: none;
            padding: var(--space-sm) 0;
            font-size: var(--font-size-base);
            font-weight: 600;
            color: var(--color-primary);
            cursor: pointer;
            text-align: left;
            gap: var(--space-sm);
            transition: color var(--transition);
        }
        .faq-question:hover { color: var(--color-accent-dark); }
        .faq-question:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 2px; }
        .faq-question .faq-icon { font-size: var(--font-size-sm); color: var(--color-text-muted); transition: transform var(--transition); flex-shrink: 0; }
        .faq-question[aria-expanded="true"] .faq-icon { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 0 var(--space-sm);
            font-size: var(--font-size-sm);
            color: var(--color-text-light);
            line-height: 1.8;
        }
        .faq-answer p:last-child { margin-bottom: 0; }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--color-primary);
            color: var(--color-text-on-dark);
            text-align: center;
            padding: var(--space-xl) 0;
        }
        .cta-section h2 { color: var(--color-white); font-size: var(--font-size-4xl); }
        .cta-section p { color: rgba(255,255,255,0.75); font-size: var(--font-size-lg); max-width: 600px; margin: 0 auto var(--space-md); }
        .cta-section .btn-accent { background: var(--color-accent); color: var(--color-primary); }
        .cta-section .btn-accent:hover { background: var(--color-accent-light); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255,255,255,0.7);
            padding: var(--space-lg) 0 var(--space-md);
        }
        .site-footer .footer-brand { font-size: var(--font-size-xl); font-weight: 700; color: var(--color-white); margin-bottom: var(--space-xs); }
        .site-footer .footer-desc { font-size: var(--font-size-sm); max-width: 320px; color: rgba(255,255,255,0.55); }
        .site-footer h5 { color: var(--color-white); font-size: var(--font-size-sm); font-weight: 600; margin-bottom: var(--space-sm); letter-spacing: 0.03em; text-transform: uppercase; }
        .site-footer a { color: rgba(255,255,255,0.6); font-size: var(--font-size-sm); text-decoration: none; transition: color var(--transition); }
        .site-footer a:hover { color: var(--color-accent); }
        .footer-links { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.4rem; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: var(--space-md);
            margin-top: var(--space-lg);
            font-size: var(--font-size-xs);
            color: rgba(255,255,255,0.4);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: var(--space-sm);
        }
        .footer-social { display: flex; gap: var(--space-sm); }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: rgba(255,255,255,0.06);
            border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.5);
            font-size: var(--font-size-sm);
            transition: background var(--transition), color var(--transition);
        }
        .footer-social a:hover { background: var(--color-accent); color: var(--color-primary-dark); }

        /* ===== News List (CMS) ===== */
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: var(--space-sm);
            padding: var(--space-sm) 0;
            border-bottom: 1px solid var(--color-border-light);
        }
        .news-item:last-child { border-bottom: none; }
        .news-item .news-tag { flex-shrink: 0; }
        .news-item .news-title { font-size: var(--font-size-base); font-weight: 500; margin-bottom: 0.15rem; }
        .news-item .news-title a { color: var(--color-text); text-decoration: none; transition: color var(--transition); }
        .news-item .news-title a:hover { color: var(--color-accent-dark); }
        .news-item .news-meta { font-size: var(--font-size-xs); color: var(--color-text-muted); display: flex; align-items: center; gap: 0.75rem; }
        .news-empty { padding: var(--space-md) 0; color: var(--color-text-muted); font-size: var(--font-size-sm); text-align: center; }

        /* ===== Breadcrumb (inner pages) ===== */
        .breadcrumb { display: flex; flex-wrap: wrap; gap: 0.4rem 0.75rem; list-style: none; padding: var(--space-sm) 0; margin: 0; font-size: var(--font-size-sm); }
        .breadcrumb li { color: var(--color-text-muted); }
        .breadcrumb li+li::before { content: '›'; margin-right: 0.75rem; color: var(--color-border); }
        .breadcrumb a { color: var(--color-text-light); text-decoration: none; }
        .breadcrumb a:hover { color: var(--color-primary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .hero-title { font-size: var(--font-size-4xl); }
        }
        @media (max-width: 768px) {
            :root { --nav-height: 64px; }
            .navbar-toggler { display: block; }
            .navbar-collapse {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-md);
                padding: var(--space-sm) var(--space-md);
                flex-direction: column;
                gap: 0.25rem;
            }
            .navbar-collapse.show { display: flex; }
            .navbar-nav { flex-direction: column; width: 100%; gap: 0.25rem; }
            .navbar-nav .nav-link { width: 100%; padding: 0.6rem 0.75rem; }
            .navbar-nav .nav-link.active::after { bottom: 2px; left: 0.75rem; right: 0.75rem; }
            .nav-cta-btn { margin-left: 0; margin-top: 0.5rem; justify-content: center; width: 100%; }
            .hero { padding: var(--space-lg) 0; }
            .hero-title { font-size: var(--font-size-3xl); }
            .hero-stats { gap: var(--space-md); }
            .hero-stat-number { font-size: var(--font-size-2xl); }
            .section-title { font-size: var(--font-size-2xl); }
            .section-padding { padding: var(--space-lg) 0; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-sm); }
            .stat-number { font-size: var(--font-size-3xl); }
            .category-card { padding: var(--space-sm); }
            .step-item { flex-direction: column; gap: var(--space-sm); }
            .cta-section h2 { font-size: var(--font-size-2xl); }
            .site-footer .footer-desc { max-width: 100%; }
            .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding-left: 1rem; padding-right: 1rem; }
            .hero-title { font-size: var(--font-size-2xl); }
            .hero-desc { font-size: var(--font-size-base); }
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .hero-stats { flex-direction: column; gap: var(--space-sm); }
            .stats-grid { grid-template-columns: 1fr; }
            .section-title { font-size: var(--font-size-xl); }
            .section-subtitle { font-size: var(--font-size-base); }
            .btn-lg { padding: 0.7rem 1.5rem; font-size: var(--font-size-sm); }
            .cta-section h2 { font-size: var(--font-size-xl); }
            .news-item { flex-direction: column; gap: 0.25rem; }
            .navbar-collapse { padding: var(--space-sm) var(--space-sm); }
        }

        /* ===== Utility ===== */
        .bg-alt { background: var(--color-bg-alt); }
        .bg-white { background: var(--color-white); }
        .border-top { border-top: 1px solid var(--color-border-light); }
        .border-bottom { border-bottom: 1px solid var(--color-border-light); }
        .rounded-lg { border-radius: var(--radius-lg); }
        .shadow-hover { transition: box-shadow var(--transition), transform var(--transition); }
        .shadow-hover:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }

        /* ===== Accessibility ===== */
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
        @media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition-duration: 0.01ms !important; } }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a4f;
            --primary-light: #2c4172;
            --primary-dark: #0f1b33;
            --accent: #d4a84b;
            --accent-hover: #c49a3f;
            --accent-light: #f0e1b8;
            --bg-body: #f8f7f4;
            --bg-white: #ffffff;
            --bg-section-alt: #f0ede8;
            --bg-dark: #1a2a4f;
            --text-dark: #1e1e1e;
            --text-body: #3d3d3d;
            --text-muted: #7a7a7a;
            --text-light: #f0ede8;
            --border-color: #e5e0d8;
            --border-light: #f0ede8;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.08);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-body);
            overflow-x: hidden;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--accent);
            outline: none;
        }

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

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

        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 导航 Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition), box-shadow var(--transition);
            height: 68px;
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            text-decoration: none;
            flex-shrink: 0;
        }
        .site-logo:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.3rem;
            font-weight: 800;
            letter-spacing: 0;
        }

        .navbar-toggler {
            display: none;
            background: none;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 1.3rem;
            color: var(--text-dark);
            cursor: pointer;
            transition: background var(--transition);
        }
        .navbar-toggler:hover {
            background: var(--bg-section-alt);
        }

        .navbar-collapse {
            display: flex;
            align-items: center;
        }

        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: color var(--transition), background var(--transition);
            text-decoration: none;
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(26, 42, 79, 0.04);
            text-decoration: none;
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-link.nav-cta-btn {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 600;
            padding: 8px 22px;
            border-radius: var(--radius-md);
            box-shadow: 0 2px 8px rgba(212, 168, 75, 0.25);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .nav-link.nav-cta-btn:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(212, 168, 75, 0.3);
            color: var(--primary-dark);
        }
        .nav-link.nav-cta-btn.active::after {
            display: none;
        }

        /* ===== 页面主体 ===== */
        .page-main {
            padding-top: 68px;
            min-height: 80vh;
        }

        /* ===== 页面标题区 ===== */
        .page-hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 80px 0 64px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 80%, rgba(212, 168, 75, 0.12) 0%, transparent 60%);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .page-hero .hero-sub {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            margin: 0 auto 20px;
            line-height: 1.6;
        }
        .page-hero .breadcrumb-custom {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .page-hero .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: color var(--transition);
        }
        .page-hero .breadcrumb-custom a:hover {
            color: var(--accent);
        }
        .page-hero .breadcrumb-custom span {
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 分类导航标签 ===== */
        .category-tabs {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            padding: 16px 0;
            position: sticky;
            top: 68px;
            z-index: 1020;
        }
        .category-tabs .tab-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
        }
        .category-tabs .tab-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: var(--radius-md);
            background: var(--bg-body);
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
            text-decoration: none;
            border: 1px solid var(--border-color);
        }
        .category-tabs .tab-link:hover {
            background: var(--bg-section-alt);
            color: var(--primary);
            border-color: var(--primary-light);
            text-decoration: none;
        }
        .category-tabs .tab-link.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .category-tabs .tab-link i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .category-tabs .tab-link.active i {
            opacity: 1;
        }

        /* ===== 通用板块 ===== */
        .section-block {
            padding: 72px 0;
        }
        .section-block.bg-alt {
            background: var(--bg-section-alt);
        }
        .section-block.bg-white {
            background: var(--bg-white);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 40px;
            line-height: 1.6;
        }
        .section-title.text-center+.section-subtitle.text-center {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 卡片 ===== */
        .card-guide {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 28px 24px;
            transition: all var(--transition);
            height: 100%;
            box-shadow: var(--shadow-sm);
        }
        .card-guide:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent-light);
        }
        .card-guide .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: var(--bg-section-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent);
            margin-bottom: 16px;
            transition: background var(--transition), color var(--transition);
        }
        .card-guide:hover .card-icon {
            background: var(--accent-light);
            color: var(--primary);
        }
        .card-guide h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-dark);
        }
        .card-guide p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .card-guide .guide-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
            margin-top: auto;
        }
        .card-guide .guide-meta i {
            opacity: 0.6;
        }
        .card-guide .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            color: var(--primary-light);
            font-size: 0.95rem;
            transition: color var(--transition);
            text-decoration: none;
        }
        .card-guide .card-link:hover {
            color: var(--accent);
            text-decoration: none;
        }
        .card-guide .card-link i {
            font-size: 0.8rem;
            transition: transform var(--transition);
        }
        .card-guide .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 图文内容块 ===== */
        .content-block {
            display: flex;
            gap: 48px;
            align-items: center;
        }
        .content-block.reverse {
            flex-direction: row-reverse;
        }
        .content-block .content-text {
            flex: 1 1 50%;
        }
        .content-block .content-visual {
            flex: 1 1 50%;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-section-alt);
            min-height: 280px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 2rem;
        }
        .content-block .content-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-md);
        }

        .content-block h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
        }
        .content-block p {
            font-size: 1rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .content-block .feature-list {
            padding: 0;
            margin: 0 0 20px 0;
        }
        .content-block .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 6px 0;
            font-size: 0.95rem;
            color: var(--text-body);
        }
        .content-block .feature-list li i {
            color: var(--accent);
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ===== 步骤流程 ===== */
        .step-flow {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            position: relative;
            transition: all var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-item .step-num {
            counter-increment: step;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            transition: background var(--transition);
        }
        .step-item:hover .step-num {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* ===== FAQ 手风琴 ===== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            background: var(--bg-white);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-accordion .accordion-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-accordion .accordion-header {
            margin: 0;
        }
        .faq-accordion .accordion-button {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            transition: background var(--transition), color var(--transition);
            border-radius: 0;
        }
        .faq-accordion .accordion-button:hover {
            background: var(--bg-section-alt);
        }
        .faq-accordion .accordion-button i {
            transition: transform var(--transition);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .faq-accordion .accordion-button[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-accordion .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== CTA 区块 ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 50%, rgba(212, 168, 75, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-block .container {
            position: relative;
            z-index: 1;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-block .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary-dark);
            background: var(--accent);
            border: none;
            border-radius: var(--radius-md);
            text-decoration: none;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(212, 168, 75, 0.3);
        }
        .cta-block .btn-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(212, 168, 75, 0.4);
            color: var(--primary-dark);
            text-decoration: none;
        }
        .cta-block .btn-cta i {
            transition: transform var(--transition);
        }
        .cta-block .btn-cta:hover i {
            transform: translateX(4px);
        }

        /* ===== 标签 & 徽章 ===== */
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--bg-section-alt);
            color: var(--text-muted);
            border: 1px solid var(--border-color);
        }
        .tag.tag-accent {
            background: var(--accent-light);
            color: var(--primary);
            border-color: var(--accent);
        }
        .tag.tag-primary {
            background: rgba(26, 42, 79, 0.08);
            color: var(--primary);
            border-color: rgba(26, 42, 79, 0.15);
        }

        .badge-custom {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--accent-light);
            color: var(--primary-dark);
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 24px 16px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .stat-item .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 24px;
            font-size: 0.95rem;
        }
        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .site-footer .footer-desc {
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
            line-height: 1.6;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 14px;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            transition: all var(--transition);
            text-decoration: none;
        }
        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .site-footer h5 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .site-footer .footer-links {
            padding: 0;
            margin: 0;
            list-style: none;
        }
        .site-footer .footer-links li {
            margin-bottom: 8px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: color var(--transition);
            font-size: 0.9rem;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            text-decoration: none;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            margin-top: 32px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .content-block {
                gap: 32px;
            }
            .content-block .content-visual {
                min-height: 220px;
            }
            .cta-block {
                padding: 40px 28px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: 60px;
            }
            .page-main {
                padding-top: 60px;
            }
            .category-tabs {
                top: 60px;
            }

            .navbar-toggler {
                display: block;
            }
            .navbar-collapse {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                border-bottom: 1px solid var(--border-color);
                padding: 16px 20px;
                box-shadow: var(--shadow-md);
                flex-direction: column;
                align-items: stretch;
            }
            .navbar-collapse.show {
                display: flex;
            }
            .navbar-nav {
                flex-direction: column;
                gap: 2px;
                width: 100%;
            }
            .nav-link {
                padding: 12px 16px;
                width: 100%;
                justify-content: flex-start;
            }
            .nav-link.active::after {
                left: 16px;
                right: 16px;
                bottom: 4px;
            }
            .nav-link.nav-cta-btn {
                justify-content: center;
                margin-top: 8px;
            }

            .page-hero {
                padding: 48px 0 40px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero .hero-sub {
                font-size: 1rem;
            }

            .section-block {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }

            .content-block {
                flex-direction: column;
                gap: 24px;
            }
            .content-block.reverse {
                flex-direction: column;
            }
            .content-block .content-visual {
                min-height: 180px;
                width: 100%;
            }

            .step-flow {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .cta-block {
                padding: 32px 20px;
                border-radius: var(--radius-md);
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }

            .site-footer .footer-brand {
                font-size: 1.3rem;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero .hero-sub {
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .step-flow {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
            .card-guide {
                padding: 20px 16px;
            }
            .category-tabs .tab-link {
                padding: 8px 14px;
                font-size: 0.85rem;
            }
            .cta-block h2 {
                font-size: 1.3rem;
            }
            .cta-block .btn-cta {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 0.95rem;
            }
            .site-footer {
                padding: 36px 0 16px;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a4a;
            --accent: #e94560;
            --accent-light: #f16a7f;
            --accent-dark: #c7304a;
            --bg-body: #f8f9fc;
            --bg-white: #ffffff;
            --bg-light: #f0f2f8;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #3d3d5c;
            --text-muted: #7a7a9a;
            --text-light: #b0b0c8;
            --border-color: #e4e6ef;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 8px 32px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 42, 108, 0.14);
            --shadow-hover: 0 20px 52px rgba(233, 69, 96, 0.16);
            --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;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            padding-top: var(--header-height);
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-body);
        }
        .container {
            max-width: var(--container-max);
            padding-left: 1.5rem;
            padding-right: 1.5rem;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1040;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            text-decoration: none;
        }
        .site-logo:hover {
            color: var(--primary-dark);
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            font-weight: 800;
            letter-spacing: 0;
        }
        .navbar-toggler {
            display: none;
            background: none;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 0.4rem 0.6rem;
            font-size: 1.2rem;
            color: var(--text-dark);
            cursor: pointer;
            transition: var(--transition);
        }
        .navbar-toggler:hover {
            background: var(--bg-light);
        }
        .navbar-collapse {
            display: flex;
            align-items: center;
        }
        .navbar-nav {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-item {
            margin: 0;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.5rem 1.1rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            text-decoration: none;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--bg-light);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 1.1rem;
            right: 1.1rem;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-cta-btn {
            background: var(--primary);
            color: #fff !important;
            border-radius: var(--radius-sm);
            padding: 0.5rem 1.4rem;
            font-weight: 600;
            margin-left: 0.5rem;
        }
        .nav-cta-btn:hover {
            background: var(--primary-light);
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .nav-cta-btn.active::after {
            display: none;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-area {
            padding: 1.5rem 0 0;
            background: var(--bg-body);
        }
        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .breadcrumb-custom li+li::before {
            content: '/';
            margin-right: 0.6rem;
            color: var(--text-light);
        }
        .breadcrumb-custom a {
            color: var(--text-muted);
        }
        .breadcrumb-custom a:hover {
            color: var(--primary);
        }
        .breadcrumb-custom .active {
            color: var(--text-dark);
            font-weight: 500;
        }

        /* ===== Hero ===== */
        .page-hero {
            padding: 3rem 0 3.5rem;
            background: linear-gradient(135deg, var(--bg-body) 0%, #eef0f8 100%);
            border-bottom: 1px solid var(--border-color);
        }
        .page-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }
        .page-hero p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 680px;
            margin-bottom: 0;
        }
        .page-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-top: 1.5rem;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 0.35rem 1rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            cursor: default;
        }
        .hero-tag i {
            color: var(--accent);
            font-size: 0.75rem;
        }
        .hero-tag:hover {
            border-color: var(--primary-light);
            background: var(--bg-light);
        }

        /* ===== Sections ===== */
        .section-block {
            padding: 4.5rem 0;
        }
        .section-block.bg-white {
            background: var(--bg-white);
        }
        .section-block.bg-light {
            background: var(--bg-light);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 2.5rem;
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2.5rem;
        }
        .section-header .section-title {
            margin-bottom: 0;
        }
        .section-header .section-subtitle {
            margin-bottom: 0;
        }
        .more-link {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--primary-light);
            white-space: nowrap;
        }
        .more-link i {
            margin-left: 0.3rem;
            font-size: 0.8rem;
            transition: var(--transition);
        }
        .more-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Cards ===== */
        .card-game {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-game:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .card-game .card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-light);
        }
        .card-game .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .card-game:hover .card-img img {
            transform: scale(1.04);
        }
        .card-game .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }
        .card-game .card-body {
            padding: 1.4rem 1.5rem 1.6rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-game .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-dark);
        }
        .card-game .card-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0.8rem;
            flex: 1;
        }
        .card-game .card-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.82rem;
            color: var(--text-light);
            border-top: 1px solid var(--border-color);
            padding-top: 0.8rem;
            margin-top: auto;
        }
        .card-game .card-meta i {
            margin-right: 0.25rem;
        }

        /* ===== Tag / Badge ===== */
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            background: var(--bg-light);
            border-radius: 999px;
            padding: 0.25rem 0.9rem;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--text-body);
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .tag:hover {
            border-color: var(--border-color);
            background: var(--bg-white);
        }
        .tag-accent {
            background: rgba(233, 69, 96, 0.08);
            color: var(--accent);
        }
        .tag-accent:hover {
            background: rgba(233, 69, 96, 0.15);
        }
        .badge-stat {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 999px;
        }

        /* ===== List / Timeline ===== */
        .news-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .news-list li {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--border-color);
        }
        .news-list li:last-child {
            border-bottom: none;
        }
        .news-list .num {
            flex-shrink: 0;
            width: 2rem;
            height: 2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-light);
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--primary-light);
        }
        .news-list .num.accent {
            background: var(--accent);
            color: #fff;
        }
        .news-list .content {
            flex: 1;
        }
        .news-list .content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.2rem;
            color: var(--text-dark);
        }
        .news-list .content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .news-list .meta {
            font-size: 0.8rem;
            color: var(--text-light);
            margin-top: 0.2rem;
        }

        /* ===== Statistics ===== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .stat-item {
            text-align: center;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }
        .stat-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }
        .stat-item .icon {
            font-size: 1.6rem;
            color: var(--accent);
            margin-bottom: 0.5rem;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.2rem;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.4rem 1.6rem;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .q {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .faq-item .q i {
            color: var(--accent);
            font-size: 0.85rem;
        }
        .faq-item .a {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-top: 0.5rem;
            padding-left: 1.6rem;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            border-radius: var(--radius-lg);
            padding: 3.5rem 4rem;
            text-align: center;
            color: #fff;
        }
        .cta-block h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
        }
        .cta-block p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            max-width: 540px;
            margin: 0 auto 1.8rem;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.8rem 2.4rem;
            border-radius: 999px;
            border: none;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-cta:hover {
            background: var(--accent-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(233, 69, 96, 0.35);
        }
        .btn-cta i {
            font-size: 0.9rem;
        }
        .btn-outline-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.7rem 2rem;
            border-radius: 999px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            transition: var(--transition);
            text-decoration: none;
            margin-left: 0.8rem;
        }
        .btn-outline-cta:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 3.5rem 0 0;
        }
        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.5rem;
        }
        .site-footer .footer-desc {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            margin-right: 0.5rem;
            transition: var(--transition);
            text-decoration: none;
        }
        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 0.4rem;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            margin-top: 2.5rem;
            padding: 1.5rem 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 0.8rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .cta-block {
                padding: 2.8rem 2rem;
            }
            .cta-block h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 64px;
            }
            :root {
                --header-height: 64px;
            }
            .navbar-toggler {
                display: inline-flex;
            }
            .navbar-collapse {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                border-bottom: 1px solid var(--border-color);
                padding: 0.8rem 1.5rem 1.2rem;
                box-shadow: var(--shadow-md);
                flex-direction: column;
                align-items: stretch;
            }
            .navbar-collapse.show {
                display: flex;
            }
            .navbar-nav {
                flex-direction: column;
                gap: 0.2rem;
                width: 100%;
            }
            .nav-link {
                padding: 0.6rem 0.8rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-link.active {
                background: var(--bg-light);
            }
            .nav-cta-btn {
                margin-left: 0;
                margin-top: 0.3rem;
                justify-content: center;
            }
            .page-hero {
                padding: 2rem 0 2.5rem;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .section-block {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 1.8rem;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .stat-item {
                padding: 1.2rem 0.8rem;
            }
            .stat-item .num {
                font-size: 1.8rem;
            }
            .news-list li {
                padding: 0.9rem 0;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .cta-block {
                padding: 2rem 1.5rem;
            }
            .cta-block h2 {
                font-size: 1.3rem;
            }
            .btn-outline-cta {
                margin-left: 0;
                margin-top: 0.6rem;
            }
            .site-footer .footer-brand {
                font-size: 1.2rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .hero-tag {
                font-size: 0.75rem;
                padding: 0.25rem 0.7rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.8rem;
            }
            .stat-item .num {
                font-size: 1.5rem;
            }
            .card-game .card-body {
                padding: 1rem 1.2rem 1.2rem;
            }
            .card-game .card-body h3 {
                font-size: 1rem;
            }
            .news-list .content h4 {
                font-size: 0.95rem;
            }
            .faq-item {
                padding: 1rem 1.2rem;
            }
            .cta-block h2 {
                font-size: 1.1rem;
            }
            .btn-cta {
                font-size: 0.9rem;
                padding: 0.6rem 1.6rem;
            }
            .btn-outline-cta {
                font-size: 0.9rem;
                padding: 0.5rem 1.4rem;
            }
        }

        /* ===== Smooth scroll offset ===== */
        .scroll-offset {
            scroll-margin-top: calc(var(--header-height) + 20px);
        }

        /* ===== Misc utilities ===== */
        .text-accent {
            color: var(--accent);
        }
        .text-primary-dark {
            color: var(--primary-dark);
        }
        .bg-soft-accent {
            background: rgba(233, 69, 96, 0.04);
        }
        .border-radius-md {
            border-radius: var(--radius-md);
        }
        .shadow-hover-card:hover {
            box-shadow: var(--shadow-hover);
        }
        .transition-default {
            transition: var(--transition);
        }

/* roulang page: article */
:root {
            --primary: #0a1628;
            --primary-light: #132240;
            --accent: #d4a853;
            --accent-hover: #c0953f;
            --accent-soft: rgba(212, 168, 83, 0.12);
            --bg-body: #f5f6f8;
            --bg-card: #ffffff;
            --bg-section: #ffffff;
            --bg-dark: #0a1628;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a5a;
            --text-muted: #8a8a9a;
            --text-white: #f0f0f0;
            --text-accent: #d4a853;
            --border-color: #e8e8ee;
            --border-light: #f0f0f5;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(10, 22, 40, 0.06);
            --shadow-md: 0 4px 16px rgba(10, 22, 40, 0.08);
            --shadow-lg: 0 12px 40px rgba(10, 22, 40, 0.12);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-read: 760px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        .container {
            max-width: 1180px;
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }
        .container-narrow {
            max-width: var(--max-read);
            margin-left: auto;
            margin-right: auto;
        }
        /* Header */
        .site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1040;
            box-shadow: var(--shadow-sm);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
            text-decoration: none;
        }
        .site-logo:hover {
            color: var(--primary);
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: var(--accent);
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 1.2rem;
            letter-spacing: 0;
        }
        .navbar-collapse {
            display: flex;
            align-items: center;
        }
        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-item {
            position: relative;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--accent-soft);
        }
        .nav-link.active {
            color: var(--primary);
            background: var(--accent-soft);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--accent);
            border-radius: 1px;
        }
        .nav-cta-btn {
            background: var(--primary) !important;
            color: var(--text-white) !important;
            padding: 8px 22px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            margin-left: 12px;
        }
        .nav-cta-btn:hover {
            background: var(--primary-light) !important;
            color: var(--accent) !important;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .nav-cta-btn.active::after {
            display: none;
        }
        .navbar-toggler {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--primary);
            padding: 6px 10px;
            cursor: pointer;
            transition: color var(--transition);
        }
        .navbar-toggler:hover {
            color: var(--accent);
        }
        @media (max-width: 991px) {
            .navbar-toggler {
                display: block;
            }
            .navbar-collapse {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--bg-card);
                flex-direction: column;
                align-items: stretch;
                padding: 24px 20px 40px;
                transform: translateX(100%);
                transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                overflow-y: auto;
                z-index: 1050;
                border-top: 1px solid var(--border-color);
            }
            .navbar-collapse.show {
                transform: translateX(0);
            }
            .navbar-nav {
                flex-direction: column;
                gap: 2px;
                width: 100%;
            }
            .nav-link {
                padding: 14px 16px;
                font-size: 1rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-cta-btn {
                margin-left: 0;
                margin-top: 12px;
                text-align: center;
                justify-content: center;
            }
        }
        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 30px;
            font-size: 0.92rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .footer-brand {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 8px;
            letter-spacing: -0.2px;
        }
        .site-footer .footer-desc {
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            margin-right: 8px;
            transition: all var(--transition);
            text-decoration: none;
        }
        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .site-footer h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 8px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: color var(--transition);
            font-size: 0.9rem;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
        }
        .site-footer .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }
        @media (max-width: 576px) {
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer .footer-desc {
                max-width: 100%;
            }
        }
        /* Breadcrumb */
        .breadcrumb-section {
            padding: 20px 0 10px;
            background: var(--bg-body);
        }
        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-muted);
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb-custom li+li::before {
            content: '/';
            margin-right: 6px;
            color: var(--border-color);
        }
        .breadcrumb-custom a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        .breadcrumb-custom a:hover {
            color: var(--accent);
        }
        .breadcrumb-custom .current {
            color: var(--text-primary);
            font-weight: 500;
        }
        /* Article header */
        .article-header {
            padding: 32px 0 20px;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
        }
        .article-header .article-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent-soft);
            color: var(--accent-hover);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 14px;
            text-decoration: none;
            transition: background var(--transition);
        }
        .article-header .article-category:hover {
            background: rgba(212, 168, 83, 0.22);
            color: var(--accent-hover);
        }
        .article-header h1 {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.4px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            font-size: 0.88rem;
            color: var(--text-muted);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            font-size: 0.85rem;
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .article-header h1 {
                font-size: 1.6rem;
            }
            .article-meta {
                gap: 12px;
                font-size: 0.82rem;
            }
        }
        /* Article body */
        .article-body-section {
            padding: 40px 0 30px;
            background: var(--bg-card);
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-primary);
        }
        .article-body p {
            margin-bottom: 1.4em;
        }
        .article-body h2,
        .article-body h3 {
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.2px;
        }
        .article-body h2 {
            font-size: 1.6rem;
        }
        .article-body h3 {
            font-size: 1.25rem;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5em 0;
            box-shadow: var(--shadow-md);
        }
        .article-body ul,
        .article-body ol {
            padding-left: 1.5em;
            margin-bottom: 1.4em;
        }
        .article-body li {
            margin-bottom: 0.4em;
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 20px;
            margin: 1.5em 0;
            background: var(--accent-soft);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body a {
            color: var(--accent-hover);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: var(--accent);
        }
        .article-body .wp-block-table,
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: 0.95rem;
        }
        .article-body table th,
        .article-body table td {
            border: 1px solid var(--border-color);
            padding: 10px 14px;
            text-align: left;
        }
        .article-body table th {
            background: var(--accent-soft);
            font-weight: 600;
            color: var(--primary);
        }
        .article-body code {
            background: var(--accent-soft);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--primary);
        }
        .article-body pre {
            background: var(--primary);
            color: #e8e8ee;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 1.5em 0;
        }
        .article-body pre code {
            background: none;
            padding: 0;
            color: inherit;
            font-size: inherit;
        }
        @media (max-width: 576px) {
            .article-body {
                font-size: 0.98rem;
                line-height: 1.75;
            }
            .article-body h2 {
                font-size: 1.35rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
        }
        /* Article footer (tags / share) */
        .article-footer-block {
            padding: 20px 0 30px;
            background: var(--bg-card);
            border-top: 1px solid var(--border-light);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            margin-bottom: 18px;
        }
        .article-tags .tag-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-right: 4px;
        }
        .article-tags .tag-item {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            background: var(--accent-soft);
            color: var(--accent-hover);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            text-decoration: none;
            transition: all var(--transition);
        }
        .article-tags .tag-item:hover {
            background: var(--accent);
            color: #fff;
        }
        .share-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .share-links .share-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .share-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: var(--accent-soft);
            color: var(--accent-hover);
            font-size: 1rem;
            transition: all var(--transition);
            text-decoration: none;
        }
        .share-links a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        /* Related posts */
        .related-section {
            padding: 50px 0 40px;
            background: var(--bg-body);
        }
        .related-section .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 28px;
            letter-spacing: -0.3px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 20px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent-soft);
            color: inherit;
        }
        .related-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-cat {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-hover);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .related-card .card-title {
            font-size: 1rem;
            font-weight: 600;
            line-height: 1.4;
            color: var(--primary);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-excerpt {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 10px;
        }
        .related-card .card-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        @media (max-width: 576px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }
        /* CTA */
        .cta-section {
            padding: 56px 0 50px;
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            text-align: center;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.65);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: var(--primary);
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            text-decoration: none;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(212, 168, 83, 0.3);
        }
        .cta-section .btn-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(212, 168, 83, 0.4);
            color: var(--primary);
        }
        @media (max-width: 576px) {
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-cta {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }
        /* Error state */
        .error-block {
            padding: 80px 0;
            text-align: center;
            background: var(--bg-card);
        }
        .error-block .error-icon {
            font-size: 3.5rem;
            color: var(--accent);
            margin-bottom: 20px;
        }
        .error-block h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .error-block p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 24px;
        }
        .error-block .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 30px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition);
        }
        .error-block .btn-home:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            color: var(--accent);
        }
        /* Utility */
        .section-spacer {
            height: 1px;
            background: var(--border-light);
            margin: 0;
        }
        .text-accent {
            color: var(--accent);
        }
        .bg-accent-soft {
            background: var(--accent-soft);
        }
        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        /* Focus visible */
        a:focus-visible,
        button:focus-visible,
        .nav-link:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        /* Print */
        @media print {
            .site-header,
            .site-footer,
            .related-section,
            .cta-section,
            .article-footer-block {
                display: none !important;
            }
            .article-body-section {
                padding: 20px 0;
            }
            body {
                background: #fff;
                color: #000;
            }
        }

/* roulang page: category3 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a4a;
            --accent: #e94560;
            --accent-light: #ff6b81;
            --accent-dark: #c23650;
            --bg-light: #f8f9fc;
            --bg-dark: #0b1120;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #7a7a9a;
            --text-light: #f0f0f5;
            --border-color: #e4e6f0;
            --border-light: #f0f1f8;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 8px 30px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 20px 60px rgba(26, 42, 108, 0.15);
            --shadow-hover: 0 16px 48px rgba(233, 69, 96, 0.12);
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --gap-section: 5rem;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            overflow-x: hidden;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            padding-left: 1.5rem;
            padding-right: 1.5rem;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Typography ===== */
        .section-title {
            font-size: 2.25rem;
            font-weight: 700;
            line-height: 1.2;
            color: var(--primary-dark);
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }
        .section-subtitle {
            font-size: 1.125rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-header {
            text-align: center;
            margin-bottom: 3.5rem;
        }
        .section-header .section-subtitle {
            margin-top: 0.5rem;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.75rem;
            }
            .section-subtitle {
                font-size: 1rem;
            }
            .section-header {
                margin-bottom: 2.5rem;
            }
        }

        /* ===== Buttons ===== */
        .btn-custom {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 42, 108, 0.25);
        }
        .btn-custom:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 42, 108, 0.30);
        }
        .btn-custom:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(26, 42, 108, 0.20);
        }
        .btn-custom:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
        }

        .btn-accent {
            background: var(--accent);
            box-shadow: 0 4px 14px rgba(233, 69, 96, 0.30);
        }
        .btn-accent:hover {
            background: var(--accent-light);
            box-shadow: 0 8px 28px rgba(233, 69, 96, 0.35);
        }

        .btn-outline-custom {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            box-shadow: none;
        }
        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(26, 42, 108, 0.20);
        }

        .btn-sm {
            padding: 0.5rem 1.25rem;
            font-size: 0.875rem;
        }
        .btn-lg {
            padding: 1rem 2.5rem;
            font-size: 1.125rem;
        }

        /* ===== Badge / Tag ===== */
        .badge-custom {
            display: inline-block;
            padding: 0.3rem 0.9rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: var(--border-light);
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .badge-accent {
            background: rgba(233, 69, 96, 0.12);
            color: var(--accent);
        }
        .badge-primary {
            background: rgba(26, 42, 108, 0.10);
            color: var(--primary);
        }
        .badge-success {
            background: rgba(34, 197, 94, 0.12);
            color: #16a34a;
        }
        .badge-warning {
            background: rgba(245, 158, 11, 0.12);
            color: #d97706;
        }

        /* ===== Card ===== */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .card-custom .card-body {
            padding: 1.75rem;
        }
        .card-custom .card-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.5rem;
        }
        .card-custom .card-text {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .card-custom .card-meta {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-top: 1rem;
            padding-top: 1rem;
            border-top: 1px solid var(--border-light);
        }

        /* ===== Section Spacing ===== */
        section {
            padding: var(--gap-section) 0;
        }

        @media (max-width: 768px) {
            section {
                padding: 2.5rem 0;
            }
            :root {
                --gap-section: 3rem;
            }
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
            padding: 0;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            padding-top: 0;
            padding-bottom: 0;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-dark);
            text-decoration: none;
            letter-spacing: -0.02em;
            transition: var(--transition);
        }
        .site-logo:hover {
            color: var(--primary);
            transform: scale(1.02);
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 4px 12px rgba(26, 42, 108, 0.25);
        }

        .navbar-toggler {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 0.25rem 0.5rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .navbar-toggler:hover {
            color: var(--accent);
            background: var(--border-light);
        }
        .navbar-toggler:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
        }

        .navbar-collapse {
            display: flex;
            align-items: center;
        }
        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-item {
            position: relative;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.5rem 1rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            text-decoration: none;
            position: relative;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(26, 42, 108, 0.04);
        }
        .nav-link.active {
            color: var(--primary-dark);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 1rem;
            right: 1rem;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-link:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
        }
        .nav-cta-btn {
            background: var(--primary);
            color: #fff !important;
            border-radius: var(--radius-sm);
            padding: 0.5rem 1.25rem;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(26, 42, 108, 0.20);
            margin-left: 0.75rem;
        }
        .nav-cta-btn:hover {
            background: var(--primary-light);
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(26, 42, 108, 0.30);
        }
        .nav-cta-btn.active::after {
            display: none;
        }

        @media (max-width: 991.98px) {
            .navbar-toggler {
                display: block;
            }
            .navbar-collapse {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border-color);
                padding: 1rem 1.5rem;
                flex-direction: column;
                align-items: stretch;
                box-shadow: var(--shadow-md);
                max-height: 80vh;
                overflow-y: auto;
            }
            .navbar-collapse.show {
                display: flex;
            }
            .navbar-nav {
                flex-direction: column;
                gap: 0.25rem;
                width: 100%;
            }
            .nav-link {
                padding: 0.75rem 1rem;
                width: 100%;
                justify-content: flex-start;
            }
            .nav-link.active::after {
                bottom: 4px;
                left: 1rem;
                right: 1rem;
                height: 2px;
            }
            .nav-cta-btn {
                margin-left: 0;
                margin-top: 0.5rem;
                justify-content: center;
            }
            .site-header .container {
                height: 60px;
            }
        }

        @media (max-width: 520px) {
            .site-logo {
                font-size: 1.25rem;
                gap: 0.4rem;
            }
            .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }
        }

        /* ===== Hero ===== */
        .hero-category {
            padding: 8rem 0 4rem;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a6c 60%, #2d4a8e 100%);
            position: relative;
            overflow: hidden;
            color: #fff;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(233, 69, 96, 0.15), transparent 70%);
            pointer-events: none;
        }
        .hero-category::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.05), transparent 70%);
            pointer-events: none;
        }
        .hero-category .container {
            position: relative;
            z-index: 1;
        }
        .hero-category h1 {
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.15;
            margin-bottom: 1rem;
        }
        .hero-category .hero-lead {
            font-size: 1.2rem;
            opacity: 0.85;
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 2rem;
        }
        .hero-category .hero-stats {
            display: flex;
            gap: 2.5rem;
            flex-wrap: wrap;
            margin-top: 2rem;
        }
        .hero-category .hero-stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero-category .hero-stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
        }
        .hero-category .hero-stat-label {
            font-size: 0.9rem;
            opacity: 0.7;
        }

        @media (max-width: 768px) {
            .hero-category {
                padding: 6rem 0 3rem;
            }
            .hero-category h1 {
                font-size: 2rem;
            }
            .hero-category .hero-lead {
                font-size: 1rem;
            }
            .hero-category .hero-stats {
                gap: 1.5rem;
            }
            .hero-category .hero-stat-number {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .hero-category h1 {
                font-size: 1.6rem;
            }
            .hero-category .hero-stats {
                flex-direction: column;
                gap: 1rem;
            }
        }

        /* ===== Community Features ===== */
        .community-features {
            background: var(--bg-light);
        }
        .feature-card {
            text-align: center;
            padding: 2rem 1.5rem;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
            height: 100%;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.75rem;
            margin: 0 auto 1.25rem;
            background: rgba(26, 42, 108, 0.06);
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.5rem;
        }
        .feature-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== Hot Discussions ===== */
        .hot-discussions {
            background: var(--bg-card);
        }
        .discussion-card {
            display: flex;
            gap: 1.25rem;
            padding: 1.5rem;
            background: var(--bg-light);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            align-items: flex-start;
        }
        .discussion-card:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--border-color);
            transform: translateX(4px);
        }
        .discussion-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .discussion-body {
            flex: 1;
            min-width: 0;
        }
        .discussion-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.25rem;
        }
        .discussion-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0.5rem;
            line-height: 1.5;
        }
        .discussion-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .discussion-meta i {
            margin-right: 0.25rem;
        }
        .discussion-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            margin-top: 0.5rem;
        }

        @media (max-width: 520px) {
            .discussion-card {
                flex-direction: column;
                padding: 1.25rem;
            }
            .discussion-avatar {
                width: 40px;
                height: 40px;
                font-size: 0.9rem;
            }
        }

        /* ===== Community Guidelines ===== */
        .community-guidelines {
            background: var(--bg-dark);
            color: #fff;
        }
        .community-guidelines .section-title {
            color: #fff;
        }
        .community-guidelines .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }
        .guideline-item {
            display: flex;
            gap: 1rem;
            padding: 1.25rem 1.5rem;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
            align-items: flex-start;
        }
        .guideline-item:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.15);
        }
        .guideline-number {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .guideline-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.25rem;
        }
        .guideline-content p {
            font-size: 0.9rem;
            opacity: 0.75;
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== Activity Feed ===== */
        .activity-feed {
            background: var(--bg-light);
        }
        .activity-item {
            display: flex;
            gap: 1rem;
            padding: 1.25rem 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .activity-item:last-child {
            border-bottom: none;
        }
        .activity-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(26, 42, 108, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1rem;
            flex-shrink: 0;
        }
        .activity-body {
            flex: 1;
            min-width: 0;
        }
        .activity-body .activity-title {
            font-weight: 600;
            color: var(--primary-dark);
            font-size: 0.95rem;
        }
        .activity-body .activity-title a {
            color: var(--primary-dark);
        }
        .activity-body .activity-title a:hover {
            color: var(--accent);
        }
        .activity-body .activity-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0.1rem 0 0.15rem;
        }
        .activity-body .activity-time {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-card);
        }
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 0.75rem;
            overflow: hidden;
            background: var(--bg-light);
        }
        .faq-accordion .accordion-header {
            background: transparent;
        }
        .faq-accordion .accordion-button {
            padding: 1.25rem 1.5rem;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--primary-dark);
            background: transparent;
            box-shadow: none;
            border: none;
            transition: var(--transition);
        }
        .faq-accordion .accordion-button::after {
            background-size: 1rem;
            transition: var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--accent);
            background: rgba(233, 69, 96, 0.04);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--accent);
        }
        .faq-accordion .accordion-body {
            padding: 0 1.5rem 1.25rem;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            color: #fff;
            text-align: center;
            padding: 4rem 0;
        }
        .cta-section h2 {
            font-size: 2.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            font-size: 1.1rem;
            opacity: 0.85;
            max-width: 600px;
            margin: 0 auto 2rem;
        }
        .cta-section .btn-custom {
            background: #fff;
            color: var(--primary-dark);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.20);
        }
        .cta-section .btn-custom:hover {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 12px 36px rgba(233, 69, 96, 0.35);
        }
        .cta-section .btn-outline-custom {
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
            background: transparent;
        }
        .cta-section .btn-outline-custom:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.10);
            color: #fff;
        }

        @media (max-width: 768px) {
            .cta-section h2 {
                font-size: 1.75rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 4rem 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            opacity: 0.7;
            max-width: 360px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 0.75rem;
            margin-top: 1rem;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        .site-footer h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 0.5rem;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            margin-top: 3rem;
            padding: 1.5rem 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            font-size: 0.85rem;
            opacity: 0.6;
        }
        .site-footer .footer-bottom span {
            color: rgba(255, 255, 255, 0.5);
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 2.5rem 0 0;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Responsive grid helpers ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        @media (max-width: 991.98px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 767.98px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Misc ===== */
        .bg-soft-primary {
            background: rgba(26, 42, 108, 0.03);
        }
        .text-accent {
            color: var(--accent);
        }
        .mb-gap {
            margin-bottom: var(--gap-section);
        }
        .mt-gap {
            margin-top: var(--gap-section);
        }
        .divider {
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 1rem auto 1.5rem;
        }
        .divider-left {
            margin-left: 0;
        }

        /* ===== Accessibility ===== */
        .skip-link {
            position: absolute;
            top: -100%;
            left: 0;
            background: var(--accent);
            color: #fff;
            padding: 0.5rem 1rem;
            z-index: 10000;
            transition: top 0.2s;
        }
        .skip-link:focus {
            top: 0;
        }

        /* ===== Smooth scroll offset ===== */
        .scroll-offset {
            scroll-margin-top: 80px;
        }

        /* ===== Glass morphism extra ===== */
        .glass-card {
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.3);
        }