/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b7a;
            --secondary: #f4a261;
            --secondary-dark: #e07c3e;
            --accent: #ffd166;
            --bg-dark: #0a0a14;
            --bg-card: #13132a;
            --bg-section: #0f0f1f;
            --bg-nav: #0d0d1e;
            --text-primary: #f0f0f5;
            --text-secondary: #b8b8d0;
            --text-muted: #7a7a9a;
            --border-color: #2a2a4a;
            --border-light: #3a3a5a;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 12px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 32px rgba(0,0,0,0.4);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.5);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-family);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            font-size: 16px;
        }
        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--secondary); }
        a:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== Typography ===== */
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; color: var(--text-primary); }
        h1 { font-size: 2.8rem; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.1rem; }
        p { color: var(--text-secondary); margin-bottom: 0.75rem; }
        .text-center { text-align: center; }
        .text-muted { color: var(--text-muted); }
        .section-badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 100px;
            background: rgba(230, 57, 70, 0.15);
            color: var(--primary-light);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            border: 1px solid rgba(230, 57, 70, 0.25);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(13, 13, 30, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-height);
            transition: background var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i { color: var(--primary); font-size: 1.5rem; }
        .logo span { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .logo:hover { color: var(--text-primary); }
        .nav-main { display: flex; align-items: center; gap: 32px; }
        .nav-main a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .nav-main a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
            border-radius: 2px;
        }
        .nav-main a:hover { color: var(--text-primary); }
        .nav-main a:hover::after { width: 100%; }
        .nav-main a.active { color: var(--text-primary); }
        .nav-main a.active::after { width: 100%; background: var(--secondary); }
        .nav-right { display: flex; align-items: center; gap: 16px; }
        .nav-search {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.06);
            border-radius: 100px;
            padding: 6px 16px 6px 20px;
            border: 1px solid var(--border-color);
            transition: border-color var(--transition), background var(--transition);
            min-width: 200px;
        }
        .nav-search i { color: var(--text-muted); font-size: 0.9rem; }
        .nav-search input {
            background: transparent;
            border: none;
            color: var(--text-primary);
            padding: 6px 8px;
            font-size: 0.9rem;
            width: 100%;
        }
        .nav-search input::placeholder { color: var(--text-muted); }
        .nav-search:focus-within { border-color: var(--primary); background: rgba(255,255,255,0.1); }
        .btn-cta {
            padding: 8px 24px;
            border-radius: 100px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            transition: transform var(--transition), box-shadow var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
        }
        .btn-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(230, 57, 70, 0.35); color: #fff; }
        .btn-cta:active { transform: translateY(0); }
        .btn-outline {
            padding: 8px 24px;
            border-radius: 100px;
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.9rem;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline:hover { border-color: var(--primary); color: var(--primary-light); background: rgba(230,57,70,0.08); }
        .mobile-toggle { display: none; font-size: 1.5rem; color: var(--text-primary); background: none; border: none; cursor: pointer; padding: 4px; }
        @media (max-width: 1024px) {
            .nav-main { gap: 20px; }
            .nav-search { min-width: 140px; }
        }
        @media (max-width: 768px) {
            .mobile-toggle { display: block; }
            .nav-main { display: none; flex-direction: column; position: absolute; top: var(--header-height); left: 0; width: 100%; background: rgba(13,13,30,0.98); backdrop-filter: blur(18px); padding: 20px 24px; gap: 16px; border-bottom: 1px solid var(--border-color); }
            .nav-main.open { display: flex; }
            .nav-right { gap: 8px; }
            .nav-search { min-width: 100px; }
            .nav-search input { width: 80px; }
            .btn-cta span { display: none; }
        }

        /* ===== Hero ===== */
        .hero {
            padding: 140px 0 80px;
            position: relative;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            mask-image: linear-gradient(to bottom, rgba(0,0,0,0.8), transparent 70%);
            -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.8), transparent 70%);
            z-index: 0;
        }
        .hero .container { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 48px; flex-wrap: wrap; }
        .hero-content { flex: 1; min-width: 300px; }
        .hero-content h1 { font-size: 3.2rem; margin-bottom: 16px; background: linear-gradient(135deg, #fff 30%, var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero-content p { font-size: 1.1rem; max-width: 520px; margin-bottom: 28px; color: var(--text-secondary); }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-visual { flex: 1; min-width: 280px; display: flex; justify-content: center; }
        .hero-visual .img-wrap {
            max-width: 480px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            background: var(--bg-card);
        }
        .hero-visual img { width: 100%; height: auto; display: block; }
        .hero-stats { display: flex; gap: 32px; margin-top: 32px; flex-wrap: wrap; }
        .hero-stat { text-align: center; }
        .hero-stat .num { font-size: 1.8rem; font-weight: 800; color: var(--primary-light); }
        .hero-stat .label { font-size: 0.85rem; color: var(--text-muted); }
        @media (max-width: 768px) {
            .hero { padding: 120px 0 60px; }
            .hero-content h1 { font-size: 2.2rem; }
            .hero-content p { font-size: 1rem; }
            .hero-stats { gap: 20px; }
        }

        /* ===== Section Common ===== */
        .section { padding: 80px 0; position: relative; }
        .section-header { text-align: center; margin-bottom: 48px; }
        .section-header h2 { margin-bottom: 12px; }
        .section-header p { max-width: 600px; margin: 0 auto; color: var(--text-muted); }
        @media (max-width: 768px) { .section { padding: 56px 0; } }

        /* ===== Features / Core ===== */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(to bottom, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .feature-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .feature-card:hover::before { opacity: 1; }
        .feature-card .icon { font-size: 2rem; color: var(--primary); margin-bottom: 16px; }
        .feature-card h3 { margin-bottom: 8px; }
        .feature-card p { font-size: 0.95rem; color: var(--text-muted); }
        @media (max-width: 1024px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 600px) { .features-grid { grid-template-columns: 1fr; } }

        /* ===== Categories ===== */
        .categories-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary); }
        .category-card .card-img { width: 100%; height: 200px; object-fit: cover; background: var(--bg-section); }
        .category-card .card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
        .category-card .card-body h3 { margin-bottom: 8px; }
        .category-card .card-body p { font-size: 0.95rem; color: var(--text-muted); flex: 1; }
        .category-card .card-body .btn-outline { align-self: flex-start; margin-top: 12px; }
        @media (max-width: 600px) { .categories-grid { grid-template-columns: 1fr; } }

        /* ===== Latest Posts (CMS) ===== */
        .posts-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
        .post-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .post-item:hover { border-color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
        .post-item .post-meta { display: flex; align-items: center; gap: 12px; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 8px; }
        .post-item .post-meta .badge { background: rgba(230,57,70,0.15); color: var(--primary-light); padding: 2px 12px; border-radius: 100px; font-weight: 600; font-size: 0.75rem; border: 1px solid rgba(230,57,70,0.2); }
        .post-item .post-title { font-size: 1.05rem; font-weight: 600; margin-bottom: 6px; color: var(--text-primary); }
        .post-item .post-title a { color: inherit; }
        .post-item .post-title a:hover { color: var(--primary-light); }
        .post-item .post-excerpt { font-size: 0.9rem; color: var(--text-muted); line-height: 1.5; }
        .post-item .post-footer { margin-top: 12px; display: flex; align-items: center; justify-content: space-between; font-size: 0.8rem; color: var(--text-muted); }
        .posts-empty { grid-column: 1 / -1; text-align: center; padding: 40px 20px; color: var(--text-muted); background: var(--bg-card); border-radius: var(--radius-md); border: 1px dashed var(--border-color); }
        @media (max-width: 768px) { .posts-list { grid-template-columns: 1fr; } }

        /* ===== Stats / Numbers ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 16px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .stat-card:hover { border-color: var(--secondary); transform: translateY(-2px); }
        .stat-card .num { font-size: 2.4rem; font-weight: 800; color: var(--primary-light); }
        .stat-card .label { font-size: 0.9rem; color: var(--text-muted); margin-top: 4px; }
        @media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 480px) { .stats-grid { grid-template-columns: 1fr 1fr; } }

        /* ===== Process / Steps ===== */
        .process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
        .process-step {
            text-align: center;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 16px;
            border: 1px solid var(--border-color);
            position: relative;
            transition: all var(--transition);
        }
        .process-step:hover { border-color: var(--primary); transform: translateY(-4px); }
        .process-step .step-num {
            width: 48px; height: 48px; border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(230,57,70,0.3);
        }
        .process-step h4 { margin-bottom: 6px; }
        .process-step p { font-size: 0.85rem; color: var(--text-muted); }
        @media (max-width: 1024px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 600px) { .process-grid { grid-template-columns: 1fr; } }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover { border-color: var(--border-light); }
        .faq-item.open { border-color: var(--primary); }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-primary);
            font-size: 1rem;
            background: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover { background: rgba(255,255,255,0.02); }
        .faq-question i { transition: transform var(--transition); color: var(--text-muted); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 18px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-card), var(--bg-section));
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(230,57,70,0.08), transparent 70%);
            border-radius: 50%;
        }
        .cta-section h2 { margin-bottom: 12px; }
        .cta-section p { max-width: 500px; margin: 0 auto 24px; color: var(--text-muted); }
        .cta-section .btn-cta { font-size: 1rem; padding: 12px 36px; }
        @media (max-width: 768px) { .cta-section { padding: 40px 24px; } }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-nav);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
        .footer-brand .logo { margin-bottom: 12px; }
        .footer-brand p { font-size: 0.9rem; color: var(--text-muted); max-width: 300px; }
        .footer-col h4 { font-size: 0.95rem; margin-bottom: 16px; color: var(--text-primary); }
        .footer-col a { display: block; font-size: 0.9rem; color: var(--text-muted); padding: 4px 0; transition: color var(--transition); }
        .footer-col a:hover { color: var(--primary-light); }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        @media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }

        /* ===== Utility ===== */
        .bg-section-alt { background: var(--bg-section); }
        .gap-16 { gap: 16px; }
        .mt-16 { margin-top: 16px; }
        .mt-32 { margin-top: 32px; }
        .mb-16 { margin-bottom: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .text-primary { color: var(--primary-light); }

        /* ===== Responsive Fine-tune ===== */
        @media (max-width: 520px) {
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            .hero-content h1 { font-size: 1.8rem; }
            .hero-stat .num { font-size: 1.4rem; }
            .stat-card .num { font-size: 1.8rem; }
            .btn-cta, .btn-outline { font-size: 0.85rem; padding: 6px 16px; }
        }

/* roulang page: article */
:root {
    --primary: #e63946;
    --primary-dark: #c1121f;
    --primary-light: #f04a56;
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --bg-dark: #0a0e17;
    --bg-card: #111827;
    --bg-card-hover: #1a2332;
    --bg-section: #0f1521;
    --bg-input: #1a2332;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #1e293b;
    --border-light: #2d3a4e;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --container-max: 1200px;
    --header-height: 72px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-sans);background:var(--bg-dark);color:var(--text-primary);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-light)}
img{max-width:100%;height:auto;display:block}
button,input,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
.container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 24px}
@media(max-width:768px){.container{padding:0 16px}}

/* header */
.site-header{position:fixed;top:0;left:0;width:100%;height:var(--header-height);background:rgba(10,14,23,0.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);z-index:1000;transition:var(--transition)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:var(--text-primary);letter-spacing:-0.5px}
.logo i{color:var(--primary);font-size:24px}
.logo span{background:linear-gradient(135deg,#f1f5f9,#e63946);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.logo:hover span{-webkit-text-fill-color:var(--primary);background:var(--primary)}
.logo:hover{color:var(--text-primary)}
.nav-main{display:flex;align-items:center;gap:8px}
.nav-main a{position:relative;padding:8px 18px;font-size:15px;font-weight:500;color:var(--text-secondary);border-radius:var(--radius-sm);transition:var(--transition)}
.nav-main a:hover{color:var(--text-primary);background:rgba(255,255,255,0.06)}
.nav-main a.active{color:var(--text-primary);background:rgba(230,57,70,0.12)}
.nav-main a.active::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--primary);border-radius:2px}
.nav-actions{display:flex;align-items:center;gap:12px}
.search-box{position:relative;width:220px}
.search-box input{width:100%;padding:8px 16px 8px 40px;background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-primary);font-size:14px;outline:none;transition:var(--transition)}
.search-box input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(230,57,70,0.15)}
.search-box i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:14px}
.cta-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 24px;background:var(--primary);color:#fff;border-radius:var(--radius-sm);font-size:14px;font-weight:600;transition:var(--transition);border:1px solid transparent}
.cta-btn:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(230,57,70,0.3)}
.cta-btn-outline{background:transparent;border-color:var(--border-light);color:var(--text-primary)}
.cta-btn-outline:hover{background:var(--bg-card);border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.mobile-toggle{display:none;flex-direction:column;gap:5px;padding:8px;cursor:pointer;background:none;border:none}
.mobile-toggle span{width:24px;height:2px;background:var(--text-primary);border-radius:2px;transition:var(--transition)}
@media(max-width:1024px){.search-box{width:160px}}
@media(max-width:768px){
    .nav-main{display:none;position:absolute;top:var(--header-height);left:0;width:100%;background:rgba(10,14,23,0.98);backdrop-filter:blur(20px);flex-direction:column;padding:16px 24px;gap:4px;border-bottom:1px solid var(--border-color)}
    .nav-main.open{display:flex}
    .nav-main a{padding:12px 16px;width:100%;border-radius:var(--radius-sm)}
    .nav-actions .search-box{display:none}
    .mobile-toggle{display:flex}
    .nav-actions .cta-btn{padding:8px 16px;font-size:13px}
}

/* hero banner (article) */
.article-hero{position:relative;padding:120px 0 60px;margin-top:var(--header-height);background:linear-gradient(135deg,#0a0e17 0%,#111827 50%,#0a0e17 100%);overflow:hidden}
.article-hero::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.15;pointer-events:none}
.article-hero::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,14,23,0.85) 0%,rgba(17,24,39,0.7) 100%);pointer-events:none}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-muted);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-muted);transition:var(--transition)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{color:var(--text-secondary)}
.breadcrumb .sep{color:var(--text-muted);font-size:12px}
.article-hero h1{font-size:clamp(28px,4vw,48px);font-weight:800;line-height:1.25;color:var(--text-primary);margin-bottom:20px;letter-spacing:-0.5px}
.article-meta{display:flex;align-items:center;gap:24px;flex-wrap:wrap;font-size:14px;color:var(--text-secondary)}
.article-meta .badge{display:inline-flex;align-items:center;gap:6px;padding:4px 14px;background:rgba(230,57,70,0.15);color:var(--primary);border-radius:20px;font-size:13px;font-weight:600}
.article-meta .badge i{font-size:12px}
.article-meta .meta-item{display:flex;align-items:center;gap:6px;color:var(--text-muted)}
.article-meta .meta-item i{font-size:14px}

/* article body */
.article-body{padding:60px 0;background:var(--bg-dark)}
.article-layout{display:grid;grid-template-columns:1fr 300px;gap:48px}
.article-main{min-width:0}
.article-feature-img{margin-bottom:32px;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border-color);box-shadow:var(--shadow)}
.article-feature-img img{width:100%;height:auto;display:block;transition:var(--transition)}
.article-feature-img:hover img{transform:scale(1.02)}
.article-content{font-size:17px;line-height:1.9;color:var(--text-secondary)}
.article-content h2,.article-content h3,.article-content h4{color:var(--text-primary);margin:32px 0 16px;font-weight:700;letter-spacing:-0.3px}
.article-content h2{font-size:26px}
.article-content h3{font-size:22px}
.article-content p{margin-bottom:20px}
.article-content ul,.article-content ol{padding-left:24px;margin-bottom:20px}
.article-content li{margin-bottom:8px}
.article-content ul li{list-style:disc}
.article-content ol li{list-style:decimal}
.article-content a{color:var(--primary);border-bottom:1px solid transparent}
.article-content a:hover{border-bottom-color:var(--primary)}
.article-content blockquote{border-left:4px solid var(--primary);padding:16px 24px;margin:24px 0;background:var(--bg-card);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-secondary);font-style:italic}
.article-content img{border-radius:var(--radius-sm);margin:24px 0;border:1px solid var(--border-color)}
.article-content pre{background:var(--bg-card);padding:20px 24px;border-radius:var(--radius-sm);overflow-x:auto;border:1px solid var(--border-color);margin:24px 0;font-size:14px;line-height:1.6}
.article-content code{background:var(--bg-card);padding:2px 8px;border-radius:4px;font-size:14px;color:var(--primary)}
.article-content pre code{background:none;padding:0;color:var(--text-secondary)}
.article-tags{display:flex;align-items:center;gap:12px;padding:24px 0;border-top:1px solid var(--border-color);margin-top:32px;flex-wrap:wrap}
.article-tags .label{font-size:14px;color:var(--text-muted);font-weight:600}
.article-tags .tag{padding:6px 16px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:20px;font-size:13px;color:var(--text-secondary);transition:var(--transition)}
.article-tags .tag:hover{background:var(--bg-card-hover);border-color:var(--primary);color:var(--primary)}
.article-share{display:flex;align-items:center;gap:12px;padding:16px 0;border-top:1px solid var(--border-color)}
.article-share .label{font-size:14px;color:var(--text-muted)}
.article-share a{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-secondary);transition:var(--transition);font-size:16px}
.article-share a:hover{background:var(--primary);border-color:var(--primary);color:#fff;transform:translateY(-2px)}

/* post navigation */
.post-nav{padding:24px 0;border-top:1px solid var(--border-color);margin-top:24px;display:grid;grid-template-columns:1fr 1fr;gap:24px}
.post-nav a{display:flex;flex-direction:column;padding:20px 24px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);transition:var(--transition)}
.post-nav a:hover{background:var(--bg-card-hover);border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.post-nav .dir{font-size:13px;color:var(--text-muted);margin-bottom:4px}
.post-nav .title{font-size:15px;font-weight:600;color:var(--text-primary);line-height:1.4}
.post-nav .next{text-align:right}
.post-nav a:only-child{grid-column:1/-1}

/* sidebar */
.article-sidebar{display:flex;flex-direction:column;gap:32px}
.sidebar-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);padding:24px;transition:var(--transition)}
.sidebar-card:hover{border-color:var(--border-light)}
.sidebar-card h3{font-size:18px;font-weight:700;color:var(--text-primary);margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--primary);display:inline-block}
.sidebar-card ul{display:flex;flex-direction:column;gap:8px}
.sidebar-card ul li a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-sm);color:var(--text-secondary);font-size:14px;transition:var(--transition);border:1px solid transparent}
.sidebar-card ul li a:hover{background:var(--bg-card-hover);border-color:var(--border-color);color:var(--text-primary)}
.sidebar-card ul li a i{color:var(--primary);font-size:12px;width:16px}
.sidebar-cta{background:linear-gradient(135deg,rgba(230,57,70,0.1),rgba(245,158,11,0.05));border-color:rgba(230,57,70,0.2)}
.sidebar-cta h3{color:var(--primary);border-bottom-color:var(--accent)}
.sidebar-cta p{font-size:14px;color:var(--text-secondary);margin-bottom:16px;line-height:1.6}
.sidebar-cta .cta-btn{width:100%;justify-content:center}

/* related posts */
.related-section{padding:60px 0;background:var(--bg-section);border-top:1px solid var(--border-color)}
.related-section .section-header{text-align:center;margin-bottom:40px}
.related-section .section-header h2{font-size:clamp(24px,3vw,36px);font-weight:800;color:var(--text-primary);margin-bottom:12px}
.related-section .section-header p{color:var(--text-secondary);font-size:16px;max-width:600px;margin:0 auto}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);overflow:hidden;transition:var(--transition);display:flex;flex-direction:column}
.related-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow)}
.related-card .card-img{width:100%;height:200px;object-fit:cover;transition:var(--transition)}
.related-card:hover .card-img{transform:scale(1.03)}
.related-card .card-body{padding:20px 24px;flex:1;display:flex;flex-direction:column}
.related-card .card-cat{font-size:12px;font-weight:600;color:var(--primary);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:8px}
.related-card .card-title{font-size:18px;font-weight:700;color:var(--text-primary);line-height:1.4;margin-bottom:8px;transition:var(--transition)}
.related-card .card-title:hover{color:var(--primary)}
.related-card .card-excerpt{font-size:14px;color:var(--text-muted);line-height:1.6;flex:1;margin-bottom:12px}
.related-card .card-meta{font-size:13px;color:var(--text-muted);display:flex;align-items:center;gap:12px;padding-top:12px;border-top:1px solid var(--border-color)}

/* CTA section */
.cta-section{padding:80px 0;background:linear-gradient(135deg,#0a0e17 0%,#111827 50%,#0a0e17 100%);position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;opacity:0.08;pointer-events:none}
.cta-section .container{position:relative;z-index:2;text-align:center}
.cta-section h2{font-size:clamp(26px,3.5vw,40px);font-weight:800;color:var(--text-primary);margin-bottom:16px}
.cta-section p{font-size:18px;color:var(--text-secondary);max-width:600px;margin:0 auto 32px;line-height:1.6}
.cta-section .cta-group{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap}
.cta-section .cta-btn{padding:14px 36px;font-size:16px}

/* not found */
.not-found{padding:100px 0;text-align:center}
.not-found .icon{font-size:64px;color:var(--text-muted);margin-bottom:24px}
.not-found h2{font-size:32px;font-weight:700;color:var(--text-primary);margin-bottom:12px}
.not-found p{font-size:16px;color:var(--text-secondary);margin-bottom:24px}
.not-found .cta-btn{display:inline-flex}

/* footer */
.site-footer{background:var(--bg-card);border-top:1px solid var(--border-color);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid var(--border-color)}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-muted);line-height:1.7;max-width:360px}
.footer-col h4{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:16px}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:var(--text-muted);transition:var(--transition)}
.footer-col a:hover{color:var(--primary);padding-left:4px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding:24px 0;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--text-muted)}
.footer-bottom i{color:var(--primary);margin-right:4px}

/* responsive */
@media(max-width:1024px){
    .article-layout{grid-template-columns:1fr;gap:32px}
    .article-sidebar{display:grid;grid-template-columns:1fr 1fr;gap:24px}
    .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
    .article-hero{padding:100px 0 40px}
    .article-hero h1{font-size:24px}
    .article-meta{gap:12px;flex-direction:column;align-items:flex-start}
    .article-content{font-size:16px}
    .post-nav{grid-template-columns:1fr;gap:16px}
    .post-nav .next{text-align:left}
    .article-sidebar{grid-template-columns:1fr}
    .related-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .cta-section{padding:60px 0}
}
@media(max-width:520px){
    .article-hero{padding:80px 0 32px}
    .article-hero h1{font-size:20px}
    .article-content{font-size:15px}
    .footer-grid{grid-template-columns:1fr;gap:24px}
    .footer-bottom{flex-direction:column;text-align:center}
    .related-card .card-img{height:160px}
}

/* utility */
.text-primary{color:var(--primary)}
.text-accent{color:var(--accent)}
.mt-1{margin-top:8px}
.mt-2{margin-top:16px}
.mt-3{margin-top:24px}
.mb-1{margin-bottom:8px}
.mb-2{margin-bottom:16px}
.mb-3{margin-bottom:24px}

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #0f1724;
            --color-primary-light: #1a2a3f;
            --color-accent: #f59e0b;
            --color-accent-hover: #d4880a;
            --color-accent-light: rgba(245, 158, 11, 0.12);
            --color-red: #ef4444;
            --color-red-dark: #dc2626;
            --color-bg: #f8fafc;
            --color-bg-alt: #f1f5f9;
            --color-bg-dark: #0b111e;
            --color-text: #1e293b;
            --color-text-weak: #64748b;
            --color-text-light: #94a3b8;
            --color-text-inverse: #f8fafc;
            --color-border: #e2e8f0;
            --color-border-strong: #cbd5e1;
            --color-white: #ffffff;
            --color-success: #22c55e;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10), 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.14);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

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

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

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

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-inverse);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: var(--color-white);
        }

        .section-label {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            background: var(--color-accent-light);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-weak);
            max-width: 640px;
            line-height: 1.6;
        }

        .text-center {
            text-align: center;
        }
        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: all var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn i {
            font-size: 0.9em;
        }
        .btn-primary {
            background: var(--color-accent);
            color: var(--color-primary);
            border-color: var(--color-accent);
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            color: var(--color-primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.30);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(245, 158, 11, 0.25);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-text-inverse);
            border-color: rgba(255, 255, 255, 0.35);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
            border-radius: var(--radius-lg);
        }

        .badge {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            background: var(--color-accent-light);
            color: var(--color-accent);
            letter-spacing: 0.02em;
        }
        .badge-red {
            background: rgba(239, 68, 68, 0.12);
            color: var(--color-red);
        }
        .badge-green {
            background: rgba(34, 197, 94, 0.12);
            color: var(--color-success);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(15, 23, 36, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 1000;
            transition: background var(--transition);
        }

        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-white);
            font-size: 1.25rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            transition: opacity var(--transition);
        }
        .logo i {
            color: var(--color-accent);
            font-size: 1.3em;
        }
        .logo:hover {
            opacity: 0.85;
            color: var(--color-white);
        }

        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-main a {
            color: rgba(255, 255, 255, 0.70);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
        }
        .nav-main a:hover {
            color: var(--color-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-main a.active {
            color: var(--color-white);
            background: rgba(245, 158, 11, 0.15);
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
        }

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

        .search-toggle {
            color: rgba(255, 255, 255, 0.60);
            font-size: 1.1rem;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .search-toggle:hover {
            color: var(--color-white);
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.15);
        }

        .nav-cta {
            background: var(--color-accent);
            color: var(--color-primary) !important;
            font-weight: 700;
            padding: 8px 22px;
            border-radius: var(--radius-md);
            font-size: 0.85rem;
            transition: all var(--transition);
            border: 2px solid var(--color-accent);
        }
        .nav-cta:hover {
            background: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.30);
            color: var(--color-primary) !important;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-white);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Mobile Nav ===== */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            width: 100%;
            background: rgba(15, 23, 36, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 20px 24px 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 999;
            flex-direction: column;
            gap: 6px;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav a {
            color: rgba(255, 255, 255, 0.70);
            font-size: 1.05rem;
            font-weight: 500;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .mobile-nav a:hover {
            color: var(--color-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .mobile-nav a.active {
            color: var(--color-white);
            background: rgba(245, 158, 11, 0.15);
        }
        .mobile-nav .nav-cta {
            margin-top: 12px;
            text-align: center;
            display: block;
        }

        /* ===== Hero ===== */
        .hero {
            padding: 140px 0 80px;
            background: var(--color-bg-dark);
            position: relative;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 120px;
            background: linear-gradient(to top, var(--color-bg-dark), transparent);
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            padding: 6px 18px;
            border-radius: 999px;
            background: rgba(245, 158, 11, 0.15);
            color: var(--color-accent);
            margin-bottom: 20px;
            border: 1px solid rgba(245, 158, 11, 0.20);
        }
        .hero h1 {
            font-size: 3.5rem;
            font-weight: 900;
            color: var(--color-white);
            letter-spacing: -0.03em;
            line-height: 1.1;
            margin-bottom: 20px;
            max-width: 800px;
        }
        .hero h1 span {
            color: var(--color-accent);
            position: relative;
        }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.70);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-stat h3 {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--color-white);
        }
        .hero-stat h3 i {
            color: var(--color-accent);
            font-size: 0.8em;
            margin-right: 4px;
        }
        .hero-stat p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.50);
            margin-bottom: 0;
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }
        .card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border-strong);
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: var(--color-accent-light);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 16px;
        }
        .card-icon.red {
            background: rgba(239, 68, 68, 0.10);
            color: var(--color-red);
        }
        .card-icon.green {
            background: rgba(34, 197, 94, 0.10);
            color: var(--color-success);
        }
        .card-icon.blue {
            background: rgba(59, 130, 246, 0.10);
            color: #3b82f6;
        }
        .card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .card p {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .card .badge {
            margin-top: 4px;
        }
        .card-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 8px;
        }
        .card-link i {
            transition: transform var(--transition);
        }
        .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Feature Cards (cover) ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 28px;
            margin-top: 40px;
        }
        .feature-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border-strong);
        }
        .feature-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .feature-card .card-body {
            padding: 24px 22px 26px;
        }
        .feature-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .feature-card .card-body p {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .feature-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--color-text-light);
        }
        .feature-card .card-meta .tag {
            background: var(--color-bg-alt);
            padding: 2px 12px;
            border-radius: 999px;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--color-text-weak);
        }

        /* ===== Steps / Process ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 32px;
            margin-top: 48px;
        }
        .step-item {
            text-align: center;
            padding: 24px 16px;
            position: relative;
        }
        .step-item:not(:last-child)::after {
            content: '→';
            position: absolute;
            right: -18px;
            top: 40px;
            font-size: 1.6rem;
            color: var(--color-accent);
            font-weight: 300;
            opacity: 0.5;
        }
        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 999px;
            background: var(--color-accent-light);
            color: var(--color-accent);
            font-size: 1.3rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            border: 2px solid rgba(245, 158, 11, 0.20);
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            line-height: 1.5;
        }

        /* ===== Stats / Data ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .stat-block {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition);
        }
        .stat-block:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(245, 158, 11, 0.20);
            transform: translateY(-2px);
        }
        .stat-block .number {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--color-accent);
            line-height: 1.1;
            margin-bottom: 4px;
        }
        .stat-block .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.60);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 40px auto 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--color-border-strong);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            background: transparent;
            text-align: left;
            gap: 16px;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--color-bg-alt);
        }
        .faq-question i {
            color: var(--color-accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--color-text-weak);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--color-bg-dark);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-white);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.65);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .btn {
            margin: 0 6px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.70);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.2rem;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            padding: 4px 0;
            transition: all var(--transition);
        }
        .footer-col a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.40);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom i {
            color: var(--color-accent);
            margin-right: 4px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 2.8rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .step-item:not(:last-child)::after {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .nav-main {
                display: none;
            }
            .nav-right .search-toggle {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .hero {
                padding: 120px 0 60px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-stats {
                flex-wrap: wrap;
                gap: 24px;
            }
            .hero-stat h3 {
                font-size: 1.4rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .card-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-block .number {
                font-size: 1.8rem;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section {
                padding: 56px 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 0.92rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-block {
                padding: 20px 12px;
            }
            .stat-block .number {
                font-size: 1.5rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.85rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
            .btn-lg {
                padding: 14px 24px;
                font-size: 0.95rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .nav-cta {
                display: none;
            }
            .mobile-nav .nav-cta {
                display: block;
            }
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e53935;
            --primary-dark: #c62828;
            --primary-light: #ff6f60;
            --secondary: #1a237e;
            --secondary-light: #283593;
            --accent: #ff8f00;
            --bg-dark: #0d1117;
            --bg-darker: #0a0e14;
            --bg-card: #161b22;
            --bg-card-hover: #1c2333;
            --bg-surface: #21262d;
            --text-primary: #f0f6fc;
            --text-secondary: #8b949e;
            --text-muted: #6e7681;
            --border-color: #30363d;
            --border-light: #21262d;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.5);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 30px rgba(229, 57, 53, 0.15);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --spacing-section: 80px;
            --container-max: 1240px;
        }

        /* ===== 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: 1.6;
            color: var(--text-primary);
            background: var(--bg-dark);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

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

        /* ===== Typography ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
        }

        h1 {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
        }
        h2 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
        }
        h3 {
            font-size: clamp(1.3rem, 2.5vw, 1.75rem);
        }
        h4 {
            font-size: 1.25rem;
        }

        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(229, 57, 53, 0.12);
            color: var(--primary-light);
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            padding: 6px 16px;
            border-radius: 50px;
            border: 1px solid rgba(229, 57, 53, 0.2);
            margin-bottom: 16px;
        }

        .section-label i {
            font-size: 0.7rem;
        }

        .section-title {
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .section-sub {
            max-width: 640px;
            color: var(--text-secondary);
            font-size: 1.1rem;
            margin-bottom: 40px;
        }

        .text-center {
            text-align: center;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(229, 57, 53, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: 0 6px 28px rgba(229, 57, 53, 0.45);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(229, 57, 53, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border-color: var(--border-color);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            background: rgba(229, 57, 53, 0.06);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            border-color: transparent;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }

        .btn i {
            font-size: 0.9em;
        }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .badge-hot {
            background: rgba(229, 57, 53, 0.15);
            color: var(--primary-light);
            border-color: rgba(229, 57, 53, 0.25);
        }

        .badge-new {
            background: rgba(0, 200, 111, 0.15);
            color: #3fb950;
            border-color: rgba(0, 200, 111, 0.25);
        }

        .badge-featured {
            background: rgba(255, 143, 0, 0.15);
            color: var(--accent);
            border-color: rgba(255, 143, 0, 0.25);
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 17, 23, 0.85);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid rgba(48, 54, 61, 0.5);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(13, 17, 23, 0.96);
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: -0.03em;
        }

        .logo i {
            color: var(--primary);
            font-size: 1.2em;
        }

        .logo span {
            background: linear-gradient(135deg, #f0f6fc 0%, #8b949e 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        .nav-main a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }

        .nav-main a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-main a.active {
            color: var(--text-primary);
            background: rgba(229, 57, 53, 0.15);
            color: var(--primary-light);
        }

        .nav-main a.active::after {
            display: none;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-trigger {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: var(--transition);
            font-size: 1rem;
        }

        .search-trigger:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--text-secondary);
        }

        .header-cta {
            padding: 8px 22px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 2px 12px rgba(229, 57, 53, 0.25);
        }

        .header-cta:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: 0 4px 20px rgba(229, 57, 53, 0.4);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            padding-top: 120px;
            padding-bottom: 60px;
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background: var(--bg-darker);
            overflow: hidden;
        }

        .page-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.2;
            z-index: 0;
        }

        .page-hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 17, 23, 0.92) 0%, rgba(13, 17, 23, 0.6) 60%, rgba(13, 17, 23, 0.3) 100%);
        }

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

        .page-hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            color: var(--text-primary);
            margin-bottom: 16px;
            max-width: 720px;
        }

        .page-hero h1 i {
            color: var(--primary);
        }

        .page-hero p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 28px;
        }

        .page-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }

        .page-hero .hero-meta .badge {
            font-size: 0.8rem;
            padding: 6px 18px;
        }

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

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

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

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 24px;
        }

        .card-grid-2 {
            grid-template-columns: repeat(auto-fill, minmax(460px, 1fr));
        }

        .card-grid-4 {
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .card-image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
            background: var(--bg-surface);
        }

        .card-body {
            padding: 24px;
        }

        .card-body .badge {
            margin-bottom: 12px;
        }

        .card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .card-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 16px;
            border-top: 1px solid var(--border-light);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .card-footer a {
            color: var(--primary-light);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .card-footer a:hover {
            color: var(--primary);
            gap: 10px;
        }

        /* ===== Feature / Icon Cards ===== */
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 32px 28px;
            transition: var(--transition);
            text-align: center;
        }

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

        .feature-card .icon-wrap {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-md);
            background: rgba(229, 57, 53, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary-light);
            margin: 0 auto 18px;
            border: 1px solid rgba(229, 57, 53, 0.15);
        }

        .feature-card h4 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== Content List ===== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .content-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .content-item:hover {
            border-color: var(--text-muted);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }

        .content-item .num {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(229, 57, 53, 0.1);
            border: 1px solid rgba(229, 57, 53, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--primary-light);
        }

        .content-item .info {
            flex: 1;
        }

        .content-item .info h4 {
            font-size: 1rem;
            margin-bottom: 4px;
            color: var(--text-primary);
        }

        .content-item .info p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        .content-item .meta {
            flex-shrink: 0;
            font-size: 0.82rem;
            color: var(--text-muted);
            text-align: right;
        }

        /* ===== Stats / Data Block ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: 24px;
        }

        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
        }

        .stat-card:hover {
            border-color: var(--text-muted);
            box-shadow: var(--shadow-sm);
        }

        .stat-card .number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
            letter-spacing: -0.03em;
        }

        .stat-card .number .accent {
            color: var(--primary-light);
        }

        .stat-card .label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ===== Steps / Process ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 32px 24px;
            counter-reset: step-counter;
        }

        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 32px 24px;
            text-align: center;
            position: relative;
            transition: var(--transition);
        }

        .step-card:hover {
            border-color: var(--text-muted);
            box-shadow: var(--shadow-sm);
            transform: translateY(-4px);
        }

        .step-card .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(229, 57, 53, 0.3);
        }

        .step-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:hover {
            border-color: var(--text-muted);
        }

        .faq-question {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            transition: var(--transition);
            gap: 16px;
        }

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

        .faq-question i {
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary-light);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 24px;
        }

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

        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--bg-darker);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(229, 57, 53, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(229, 57, 53, 0.08) 0%, rgba(26, 35, 126, 0.05) 100%);
            border-radius: var(--radius-xl);
            border: 1px solid rgba(229, 57, 53, 0.15);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .cta-box h2 {
            margin-bottom: 12px;
        }

        .cta-box p {
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 32px;
            color: var(--text-secondary);
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-color);
            padding: 56px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            font-size: 1.2rem;
            margin-bottom: 16px;
            display: inline-flex;
        }

        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            max-width: 320px;
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            color: var(--text-primary);
            margin-bottom: 18px;
            font-weight: 600;
        }

        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding: 4px 0;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .footer-bottom i {
            margin-right: 6px;
            color: var(--text-muted);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: var(--transition);
        }

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

        .breadcrumb span {
            color: var(--text-secondary);
        }

        .breadcrumb i {
            font-size: 0.65rem;
            color: var(--text-muted);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .card-grid-2 {
                grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 50px;
            }

            .nav-main {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(13, 17, 23, 0.98);
                backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border-color);
                padding: 16px 24px;
                flex-direction: column;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
            }

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

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

            .mobile-toggle {
                display: flex;
            }

            .header-cta {
                display: none;
            }

            .page-hero {
                min-height: 320px;
                padding-top: 100px;
                padding-bottom: 40px;
            }

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

            .card-grid-2 {
                grid-template-columns: 1fr;
            }

            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .cta-box {
                padding: 40px 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }

            .content-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px 18px;
            }

            .content-item .meta {
                text-align: left;
            }
        }

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

            .header-inner {
                height: 60px;
            }

            .logo {
                font-size: 1.1rem;
            }

            .page-hero h1 {
                font-size: 1.8rem;
            }

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

            .card-grid-4 {
                grid-template-columns: 1fr;
            }

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

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-card {
                padding: 20px 12px;
            }

            .stat-card .number {
                font-size: 1.8rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

            .cta-box .btn-group {
                flex-direction: column;
                align-items: center;
            }

            .faq-question {
                font-size: 0.92rem;
                padding: 16px 18px;
            }
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

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

        .animate-delay-1 {
            animation-delay: 0.1s;
        }
        .animate-delay-2 {
            animation-delay: 0.2s;
        }
        .animate-delay-3 {
            animation-delay: 0.3s;
        }
        .animate-delay-4 {
            animation-delay: 0.4s;
        }