/* roulang page: index */
:root {
            --primary: #0B3C25;
            --primary-deep: #062315;
            --accent: #FFCC00;
            --accent-lime: #32CD32;
            --surface: #ffffff;
            --surface-alt: #F4F9F6;
            --text: #1A2E28;
            --text-soft: #4A5F57;
            --text-light: #8CA39A;
            --border: #D8E6DF;
            --border-strong: #B7CCC1;
            --shadow-sm: 0 1px 3px rgba(6,35,21,0.06);
            --shadow-md: 0 8px 24px rgba(6,35,21,0.08);
            --shadow-lg: 0 20px 40px rgba(6,35,21,0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --font: 'Be Vietnam Pro', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font);
            background: var(--surface);
            color: var(--text);
            line-height: 1.65;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; display: block; height: auto; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary); }
        ul, ol { list-style: none; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        :focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

        .container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; }
        .section { padding: 72px 0; }
        .section-alt { background: var(--surface-alt); }
        .section-title { font-size: 2rem; font-weight: 800; color: var(--primary-deep); letter-spacing: -0.5px; line-height: 1.25; }
        .section-subtitle { font-size: 1rem; color: var(--text-soft); margin-top: 14px; max-width: 680px; line-height: 1.7; }
        .section-head { margin-bottom: 40px; }
        .section-head .section-title { display: flex; align-items: center; gap: 14px; }
        .section-head .section-title::before { content: ''; width: 5px; height: 32px; background: var(--accent); border-radius: 3px; flex-shrink: 0; }
        .text-accent { color: var(--accent); }
        .text-primary { color: var(--primary); }
        .badge {
            display: inline-flex; align-items: center; gap: 6px;
            padding: 5px 14px; border-radius: 20px;
            font-size: 0.78rem; font-weight: 600; letter-spacing: 0.3px;
            background: rgba(255,204,0,0.12); color: var(--primary-deep);
            border: 1px solid rgba(255,204,0,0.35);
        }
        .badge-hot { background: #D32F2F; color: #fff; border-color: #D32F2F; }
        .badge-green { background: rgba(50,205,50,0.12); color: #1A7A1A; border-color: rgba(50,205,50,0.35); }

        /* Header */
        .site-header {
            position: sticky; top: 0; z-index: 100;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 24px; }
        .logo { font-weight: 800; font-size: 1.1rem; color: var(--primary-deep); letter-spacing: -0.3px; line-height: 1.3; }
        .logo span { color: var(--accent); background: var(--primary-deep); padding: 2px 8px; border-radius: 6px; margin-left: 6px; font-size: 0.8rem; display: inline-block; }
        .main-nav { display: flex; align-items: center; gap: 28px; }
        .main-nav a { font-weight: 500; font-size: 0.92rem; color: var(--text-soft); position: relative; padding: 6px 0; }
        .main-nav a::after { content: ''; position: absolute; left: 0; bottom: -2px; width: 0; height: 2px; background: var(--accent); transition: width var(--transition); }
        .main-nav a:hover::after, .main-nav a.active::after { width: 100%; }
        .main-nav a.active { color: var(--primary-deep); font-weight: 700; }
        .header-actions { display: flex; align-items: center; gap: 12px; }
        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 8px;
            padding: 11px 24px; border-radius: 30px;
            font-weight: 600; font-size: 0.9rem; cursor: pointer;
            border: none; transition: all var(--transition);
            text-align: center; white-space: nowrap;
        }
        .btn-primary { background: var(--primary-deep); color: #fff; box-shadow: 0 4px 14px rgba(6,35,21,0.25); }
        .btn-primary:hover { background: #0A4A2E; transform: translateY(-1px); box-shadow: 0 8px 22px rgba(6,35,21,0.3); color: #fff; }
        .btn-accent { background: var(--accent); color: var(--primary-deep); box-shadow: 0 4px 14px rgba(255,204,0,0.35); }
        .btn-accent:hover { background: #FFD933; transform: translateY(-1px); box-shadow: 0 8px 22px rgba(255,204,0,0.4); color: var(--primary-deep); }
        .btn-outline { background: transparent; color: var(--primary-deep); border: 1.5px solid var(--border-strong); }
        .btn-outline:hover { border-color: var(--primary); background: rgba(11,60,37,0.04); color: var(--primary-deep); }
        .btn-sm { padding: 8px 18px; font-size: 0.82rem; }
        .btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: 34px; }
        .mobile-toggle { display: none; background: none; border: none; cursor: pointer; width: 44px; height: 44px; position: relative; z-index: 110; }
        .mobile-toggle span { display: block; width: 22px; height: 2.5px; background: var(--primary-deep); margin: 5px auto; border-radius: 2px; transition: all 0.3s; }

        /* Hero */
        .hero {
            position: relative; overflow: hidden;
            background: var(--primary-deep);
            padding: 80px 0 90px;
            color: #fff;
        }
        .hero::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            opacity: 0.22;
        }
        .hero::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(6,35,21,0.92) 0%, rgba(11,60,37,0.7) 55%, rgba(6,35,21,0.85) 100%);
        }
        .hero .container { position: relative; z-index: 2; }
        .hero-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; }
        .hero-content .badge { background: rgba(255,204,0,0.18); color: var(--accent); border-color: rgba(255,204,0,0.45); margin-bottom: 20px; }
        .hero-title {
            font-size: 2.7rem; font-weight: 800; line-height: 1.2;
            letter-spacing: -1px; color: #fff; margin-bottom: 20px;
        }
        .hero-title span { color: var(--accent); }
        .hero-desc { font-size: 1.05rem; color: rgba(255,255,255,0.82); max-width: 560px; line-height: 1.7; margin-bottom: 28px; }
        .hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 32px; }
        .hero-stats { display: flex; gap: 36px; flex-wrap: wrap; }
        .hero-stat { display: flex; flex-direction: column; }
        .hero-stat .num { font-size: 1.8rem; font-weight: 800; color: var(--accent); }
        .hero-stat .label { font-size: 0.82rem; color: rgba(255,255,255,0.65); }
        .hero-panel {
            background: rgba(255,255,255,0.07);
            border: 1px solid rgba(255,255,255,0.14);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-lg);
        }
        .hero-panel h3 { font-size: 1.1rem; font-weight: 700; color: var(--accent); margin-bottom: 18px; }
        .hero-panel ul { display: flex; flex-direction: column; gap: 12px; }
        .hero-panel li { display: flex; align-items: center; gap: 10px; font-size: 0.9rem; color: rgba(255,255,255,0.85); }
        .hero-panel li::before { content: '♦'; color: var(--accent); font-size: 0.8rem; }

        /* Entry Matrix */
        .entry-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 18px; }
        .entry-item {
            display: flex; align-items: center; gap: 14px;
            padding: 20px; background: var(--surface); border: 1px solid var(--border);
            border-radius: var(--radius-md); transition: all var(--transition);
        }
        .entry-item:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .entry-item .icon { width: 44px; height: 44px; border-radius: 12px; background: rgba(11,60,37,0.07); display: flex; align-items: center; justify-content: center; font-size: 1.3rem; flex-shrink: 0; }
        .entry-item .entry-title { font-weight: 700; font-size: 0.92rem; color: var(--primary-deep); }
        .entry-item .entry-sub { font-size: 0.78rem; color: var(--text-light); }

        /* Section Cards */
        .card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
        .card {
            background: var(--surface); border: 1px solid var(--border);
            border-radius: var(--radius-md); padding: 26px;
            transition: all var(--transition); position: relative;
        }
        .card:hover { border-color: var(--border-strong); box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .card h3 { font-size: 1.1rem; font-weight: 700; color: var(--primary-deep); margin-bottom: 10px; }
        .card p { font-size: 0.9rem; color: var(--text-soft); line-height: 1.65; }
        .card .card-icon { width: 48px; height: 48px; border-radius: 14px; background: rgba(255,204,0,0.15); display: flex; align-items: center; justify-content: center; font-size: 1.4rem; margin-bottom: 16px; }

        /* Value Points */
        .value-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
        .value-item { display: flex; align-items: flex-start; gap: 14px; padding: 20px 0; }
        .value-item .value-num { font-size: 2.2rem; font-weight: 800; color: var(--accent); line-height: 1; min-width: 60px; }
        .value-item h4 { font-size: 1rem; font-weight: 700; color: var(--primary-deep); }
        .value-item p { font-size: 0.86rem; color: var(--text-soft); }

        /* Hot List */
        .hot-list { display: flex; flex-direction: column; gap: 14px; }
        .hot-item {
            display: flex; align-items: center; gap: 16px;
            padding: 18px 20px; background: var(--surface);
            border: 1px solid var(--border); border-radius: var(--radius-md);
            transition: all var(--transition);
        }
        .hot-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
        .hot-rank { font-size: 1.3rem; font-weight: 800; color: var(--primary); min-width: 40px; }
        .hot-info { flex: 1; }
        .hot-info h4 { font-size: 0.95rem; font-weight: 700; color: var(--primary-deep); }
        .hot-info p { font-size: 0.82rem; color: var(--text-soft); }
        .hot-item .btn { flex-shrink: 0; }

        /* Info List */
        .info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
        .info-list { display: flex; flex-direction: column; gap: 18px; }
        .info-list .info-item { padding-left: 20px; border-left: 3px solid var(--border); transition: border-color var(--transition); }
        .info-list .info-item:hover { border-left-color: var(--accent); }
        .info-item h4 { font-size: 1rem; font-weight: 700; color: var(--primary-deep); margin-bottom: 6px; }
        .info-item p { font-size: 0.88rem; color: var(--text-soft); line-height: 1.6; }
        .info-side { background: var(--surface-alt); border-radius: var(--radius-lg); padding: 30px; border: 1px solid var(--border); }
        .info-side h3 { font-size: 1.15rem; font-weight: 700; color: var(--primary-deep); margin-bottom: 16px; }

        /* FAQ */
        .faq-list { display: flex; flex-direction: column; gap: 14px; max-width: 800px; }
        .faq-item { border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; background: var(--surface); }
        .faq-question {
            width: 100%; display: flex; justify-content: space-between; align-items: center;
            padding: 18px 22px; background: none; border: none; cursor: pointer;
            font-weight: 600; font-size: 0.95rem; color: var(--primary-deep); text-align: left;
        }
        .faq-question::after { content: '+'; font-size: 1.4rem; color: var(--text-light); transition: transform var(--transition); }
        .faq-item.open .faq-question::after { transform: rotate(45deg); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
        .faq-answer p { padding: 0 22px 20px; font-size: 0.88rem; color: var(--text-soft); line-height: 1.7; }

        /* CTA */
        .cta-section { background: var(--primary-deep); color: #fff; position: relative; overflow: hidden; }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat; opacity: 0.15; }
        .cta-content { position: relative; z-index: 2; text-align: left; max-width: 720px; }
        .cta-content h2 { font-size: 2rem; font-weight: 800; margin-bottom: 16px; letter-spacing: -0.5px; }
        .cta-content p { color: rgba(255,255,255,0.8); margin-bottom: 28px; font-size: 1rem; line-height: 1.7; }

        /* Footer */
        .site-footer { background: #041A0F; color: rgba(255,255,255,0.75); padding: 50px 0 30px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 36px; }
        .footer-brand .logo { color: #fff; font-size: 1.2rem; }
        .footer-brand p { font-size: 0.85rem; margin-top: 12px; color: rgba(255,255,255,0.6); }
        .footer-col h4 { font-size: 0.95rem; font-weight: 700; color: #fff; margin-bottom: 14px; }
        .footer-col a { display: block; font-size: 0.85rem; color: rgba(255,255,255,0.65); padding: 4px 0; }
        .footer-col a:hover { color: var(--accent); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); padding-top: 24px; display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; align-items: center; font-size: 0.8rem; }
        .footer-bottom .copyright { color: rgba(255,255,255,0.5); }
        .footer-bottom .badge-18 { background: #D32F2F; color: #fff; border-radius: 4px; padding: 2px 8px; font-weight: 700; font-size: 0.75rem; }

        /* FAB */
        .fab {
            position: fixed; left: 20px; bottom: 24px; z-index: 90;
            width: 56px; height: 56px; border-radius: 50%;
            background: var(--primary-deep); border: 2px solid var(--accent);
            display: flex; align-items: center; justify-content: center;
            cursor: pointer; box-shadow: 0 4px 20px rgba(255,215,0,0.3);
            animation: floatBreath 3s ease-in-out infinite;
            transition: all var(--transition); text-decoration: none;
        }
        .fab:hover { transform: scale(1.1); box-shadow: 0 8px 28px rgba(255,215,0,0.45); }
        .fab:active { transform: scale(0.95); }
        .fab svg { width: 26px; height: 26px; fill: var(--accent); }
        .fab .notification { position: absolute; top: -2px; right: -2px; width: 14px; height: 14px; background: #D32F2F; border-radius: 50%; border: 2px solid #fff; animation: blink 1.8s infinite; }
        @keyframes floatBreath { 0%,100% { transform: translateY(0); opacity: 0.7; } 50% { transform: translateY(-6px); opacity: 1; } }
        @keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid { grid-template-columns: 1fr; gap: 36px; }
            .hero-title { font-size: 2.2rem; }
            .info-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
        }
        @media (max-width: 768px) {
            .section { padding: 48px 0; }
            .section-title { font-size: 1.5rem; }
            .main-nav {
                position: fixed; top: 68px; left: 0; right: 0;
                background: #fff; flex-direction: column; align-items: flex-start;
                padding: 20px 24px; gap: 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                display: none;
            }
            .main-nav.open { display: flex; }
            .main-nav a { font-size: 1rem; width: 100%; }
            .header-actions .btn-outline { display: none; }
            .mobile-toggle { display: block; }
            .hero { padding: 48px 0 60px; }
            .hero-title { font-size: 1.8rem; }
            .hero-stats { gap: 20px; }
            .card-grid { grid-template-columns: 1fr; }
            .value-grid { grid-template-columns: 1fr 1fr; }
            .hot-item { flex-wrap: wrap; }
            .footer-grid { grid-template-columns: 1fr; gap: 20px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-title { font-size: 1.5rem; }
            .hero-desc { font-size: 0.95rem; }
            .btn-lg { padding: 12px 24px; font-size: 0.9rem; }
            .hero-stats { gap: 14px; }
            .hero-stat .num { font-size: 1.4rem; }
            .value-grid { grid-template-columns: 1fr; }
            .entry-grid { grid-template-columns: 1fr 1fr; }
            .section-title { font-size: 1.3rem; }
            .fab { left: 12px; bottom: 16px; width: 48px; height: 48px; }
        }

/* roulang page: article */
:root {
            --primary: #0A6CFF;
            --primary-dark: #0052CC;
            --primary-light: #E8F1FF;
            --accent: #FFB800;
            --accent-dark: #E6A200;
            --bg: #F5F8FC;
            --surface: #FFFFFF;
            --surface-alt: #F0F4FA;
            --text: #0B1B33;
            --text-secondary: #4A5A72;
            --text-muted: #7A8AA0;
            --border: #DCE5F0;
            --border-light: #EAF0F7;
            --shadow-sm: 0 1px 3px rgba(11, 27, 51, 0.06);
            --shadow-md: 0 4px 16px rgba(11, 27, 51, 0.08);
            --shadow-lg: 0 12px 32px rgba(11, 27, 51, 0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.65;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition);
        }

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-height);
        }

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

        .logo {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .logo span {
            color: var(--primary);
            background: var(--primary-light);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
        }

        .main-nav a {
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }

        .main-nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .main-nav a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-login {
            padding: 9px 18px;
            border-radius: 8px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid var(--border);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .btn-signup {
            padding: 9px 20px;
            border-radius: 8px;
            font-size: 0.88rem;
            font-weight: 700;
            color: #fff;
            background: var(--primary);
            box-shadow: var(--shadow-sm);
            white-space: nowrap;
        }

        .btn-signup:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .btn-signup:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            background: transparent;
            border: 1px solid var(--border);
        }

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

        /* Hero / Article Banner */
        .article-hero {
            padding: calc(var(--header-height) + 48px) 0 40px;
            background: linear-gradient(165deg, #E8F1FF 0%, #F5F8FC 55%, #FFFFFF 100%);
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(10, 108, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .sep {
            color: var(--border);
        }

        .breadcrumb .current {
            color: var(--text-secondary);
            font-weight: 500;
        }

        .article-hero-content {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            position: relative;
            z-index: 1;
        }

        .article-hero .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background: var(--primary);
            color: #fff;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 16px;
            width: fit-content;
        }

        .article-hero h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.025em;
            color: var(--text);
            margin-bottom: 16px;
            max-width: 900px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-light);
        }

        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* Article Body */
        .article-main {
            padding: 40px 0 60px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }

        .article-content {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }

        .article-content h2 {
            font-size: 1.55rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--text);
            margin: 32px 0 16px;
            line-height: 1.35;
        }

        .article-content h2:first-child {
            margin-top: 0;
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 650;
            letter-spacing: -0.015em;
            color: var(--text);
            margin: 28px 0 12px;
            line-height: 1.4;
        }

        .article-content p {
            color: var(--text-secondary);
            margin-bottom: 16px;
            font-size: 1rem;
            line-height: 1.7;
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 20px;
            padding-left: 24px;
            color: var(--text-secondary);
        }

        .article-content li {
            margin-bottom: 10px;
            line-height: 1.65;
        }

        .article-content strong {
            color: var(--text);
            font-weight: 650;
        }

        .article-content blockquote {
            margin: 24px 0;
            padding: 20px 24px;
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text);
            font-weight: 500;
            font-style: italic;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            width: 100%;
            object-fit: cover;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.92rem;
        }

        .article-content table th,
        .article-content table td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border-light);
        }

        .article-content table th {
            background: var(--surface-alt);
            font-weight: 650;
            color: var(--text);
        }

        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: calc(var(--header-height) + 24px);
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }

        .sidebar-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .sidebar-card .side-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.88rem;
            color: var(--text-secondary);
            transition: all var(--transition);
        }

        .sidebar-card .side-link:last-child {
            border-bottom: none;
        }

        .sidebar-card .side-link:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .sidebar-card .side-link .num {
            width: 24px;
            height: 24px;
            border-radius: 6px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.72rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .sidebar-cta {
            background: linear-gradient(145deg, #0A6CFF 0%, #0052CC 100%);
            color: #fff;
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: left;
            box-shadow: var(--shadow-md);
        }

        .sidebar-cta h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .sidebar-cta p {
            font-size: 0.88rem;
            opacity: 0.9;
            margin-bottom: 16px;
            line-height: 1.6;
        }

        .sidebar-cta .btn-side {
            display: block;
            text-align: center;
            background: #fff;
            color: var(--primary);
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 0.88rem;
            transition: all var(--transition);
        }

        .sidebar-cta .btn-side:hover {
            background: var(--accent);
            color: var(--text);
            transform: translateY(-1px);
        }

        /* FAQ Section */
        .faq-section {
            padding: 60px 0;
            background: var(--surface);
            border-top: 1px solid var(--border-light);
        }

        .faq-section h2 {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.025em;
            margin-bottom: 32px;
            color: var(--text);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 820px;
        }

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

        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            gap: 16px;
        }

        .faq-question .icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            transition: transform var(--transition);
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .faq-item.open .faq-question .icon {
            transform: rotate(45deg);
        }

        /* CTA Section */
        .cta-section {
            padding: 64px 0;
            background: linear-gradient(160deg, #0B1B33 0%, #0A2A4A 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(10, 108, 255, 0.2) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            right: -5%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(255, 184, 0, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-inner {
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .cta-inner h2 {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.025em;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .cta-inner p {
            font-size: 1.05rem;
            opacity: 0.85;
            line-height: 1.7;
            max-width: 560px;
        }

        .btn-cta {
            display: inline-block;
            background: var(--accent);
            color: var(--text);
            padding: 16px 32px;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 700;
            white-space: nowrap;
            box-shadow: 0 4px 20px rgba(255, 184, 0, 0.3);
            transition: all var(--transition);
        }

        .btn-cta:hover {
            background: #FFC933;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 184, 0, 0.4);
        }

        .btn-cta:active {
            transform: translateY(0);
        }

        /* Footer */
        .site-footer {
            background: #0B1B33;
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand .logo span {
            background: rgba(10, 108, 255, 0.25);
            color: #7EB3FF;
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            opacity: 0.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-col a {
            display: block;
            font-size: 0.86rem;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 10px;
            transition: color var(--transition);
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 24px;
            font-size: 0.8rem;
        }

        .badge-18 {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #D32F2F;
            color: #fff;
            font-weight: 800;
            font-size: 0.78rem;
            flex-shrink: 0;
        }

        .copyright {
            opacity: 0.7;
            line-height: 1.6;
        }

        /* Not Found */
        .not-found {
            text-align: center;
            padding: 80px 24px;
        }

        .not-found h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }

        .not-found p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .btn-back {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .btn-back:hover {
            background: var(--primary-dark);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--surface);
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-lg);
                gap: 4px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 16px;
            }
            .mobile-toggle {
                display: flex;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-content {
                padding: 24px 20px;
            }
            .article-content h2 {
                font-size: 1.3rem;
            }
            .cta-inner {
                grid-template-columns: 1fr;
                gap: 24px;
                text-align: left;
            }
            .cta-inner h2 {
                font-size: 1.5rem;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .article-hero {
                padding: calc(var(--header-height) + 32px) 0 28px;
            }
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-meta {
                font-size: 0.78rem;
                gap: 10px;
            }
            .article-content {
                padding: 20px 16px;
                border-radius: var(--radius-md);
            }
            .article-content h2 {
                font-size: 1.2rem;
            }
            .article-content p {
                font-size: 0.92rem;
            }
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .btn-login {
                padding: 8px 12px;
                font-size: 0.8rem;
            }
            .logo {
                font-size: 1rem;
            }
            .logo span {
                font-size: 0.68rem;
                padding: 2px 6px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .btn-cta {
                width: 100%;
                text-align: center;
                padding: 14px 24px;
            }
        }

/* roulang page: category1 */
:root {
            --bs-primary: #1a5cff;
            --bs-primary-dark: #0040cc;
            --bs-primary-soft: #e8f0ff;
            --bs-accent: #ffb800;
            --bs-dark-bg: #0d1b2a;
            --bs-dark-card: #16283c;
            --bs-text: #1e293b;
            --bs-text-muted: #5b6b7c;
            --bs-border: #dde5ef;
            --bs-shadow-sm: 0 2px 8px rgba(13, 27, 42, 0.06);
            --bs-shadow-md: 0 8px 28px rgba(13, 27, 42, 0.12);
            --bs-shadow-lg: 0 16px 48px rgba(13, 27, 42, 0.18);
            --bs-radius: 18px;
            --bs-radius-sm: 12px;
            --bs-font: 'Segoe UI', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Roboto', sans-serif;
            --bs-transition: all 0.25s ease;
        }

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

        body {
            font-family: var(--bs-font);
            background-color: #f7faff;
            color: var(--bs-text);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        button {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header & Navigation */
        .site-header {
            background: #ffffff;
            box-shadow: 0 4px 16px rgba(13, 27, 42, 0.06);
            position: sticky;
            top: 0;
            z-index: 999;
            padding: 0;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
            flex-wrap: nowrap;
        }

        .logo {
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--bs-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .logo span {
            background: var(--bs-accent);
            color: #1e293b;
            padding: 2px 8px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 800;
            letter-spacing: 0.02em;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
        }

        .main-nav a {
            padding: 8px 16px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            color: #3d4f61;
            white-space: nowrap;
            transition: var(--bs-transition);
            border: 1px solid transparent;
        }

        .main-nav a:hover {
            background: var(--bs-primary-soft);
            color: var(--bs-primary);
            border-color: rgba(26, 92, 255, 0.2);
        }

        .main-nav a.active {
            background: var(--bs-primary);
            color: #ffffff;
            box-shadow: 0 4px 12px rgba(26, 92, 255, 0.3);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn-login {
            background: transparent;
            border: none;
            color: #3d4f61;
            font-weight: 600;
            padding: 8px 14px;
            border-radius: 30px;
            transition: var(--bs-transition);
        }

        .btn-login:hover {
            background: #f0f4fa;
            color: var(--bs-primary);
        }

        .btn-signup {
            background: var(--bs-primary);
            color: #fff;
            border: none;
            font-weight: 700;
            padding: 10px 22px;
            border-radius: 30px;
            box-shadow: 0 6px 18px rgba(26, 92, 255, 0.35);
            transition: var(--bs-transition);
        }

        .btn-signup:hover {
            background: var(--bs-primary-dark);
            box-shadow: 0 8px 24px rgba(26, 92, 255, 0.45);
            transform: translateY(-2px);
        }

        /* Mobile nav toggle */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--bs-primary);
            padding: 4px 8px;
            cursor: pointer;
        }

        /* Hero Section - Dark info panel */
        .hero-section {
            background: var(--bs-dark-bg);
            background-image: linear-gradient(145deg, #0d1b2a 0%, #1a2c42 100%);
            padding: 72px 0 80px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(26, 92, 255, 0.35) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(255, 184, 0, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.03em;
            margin-bottom: 18px;
            position: relative;
            z-index: 2;
        }

        .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.8);
            max-width: 640px;
            position: relative;
            z-index: 2;
            line-height: 1.7;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(255, 184, 0, 0.15);
            color: #ffb800;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 184, 0, 0.3);
            position: relative;
            z-index: 2;
        }

        .hero-data-panel {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: 24px;
            padding: 32px;
            position: relative;
            z-index: 3;
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }

        .data-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .data-row:last-child {
            border-bottom: none;
        }

        .data-label {
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
            font-weight: 500;
        }

        .data-value {
            font-weight: 700;
            font-size: 1.1rem;
            color: #ffb800;
        }

        /* Section styles */
        .section {
            padding: 70px 0;
        }

        .section-light {
            background: #ffffff;
        }

        .section-soft {
            background: #f7faff;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--bs-text);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-lead {
            font-size: 1.1rem;
            color: var(--bs-text-muted);
            max-width: 700px;
            line-height: 1.7;
            margin-bottom: 32px;
        }

        .eyebrow {
            display: inline-block;
            background: var(--bs-primary-soft);
            color: var(--bs-primary);
            font-weight: 700;
            font-size: 0.8rem;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            padding: 6px 14px;
            border-radius: 30px;
            margin-bottom: 14px;
        }

        /* Feature blocks */
        .feature-block {
            background: #ffffff;
            border-radius: var(--bs-radius);
            padding: 28px;
            box-shadow: var(--bs-shadow-sm);
            border: 1px solid var(--bs-border);
            transition: var(--bs-transition);
            height: 100%;
        }

        .feature-block:hover {
            box-shadow: var(--bs-shadow-md);
            transform: translateY(-4px);
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--bs-primary-soft);
            color: var(--bs-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 18px;
        }

        .feature-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--bs-text);
        }

        .feature-text {
            color: var(--bs-text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* Stats */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-item {
            background: #ffffff;
            border-radius: var(--bs-radius-sm);
            padding: 24px;
            text-align: center;
            box-shadow: var(--bs-shadow-sm);
            border: 1px solid var(--bs-border);
        }

        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--bs-primary);
            line-height: 1.2;
        }

        .stat-label {
            color: var(--bs-text-muted);
            font-weight: 600;
            font-size: 0.9rem;
            margin-top: 6px;
        }

        /* Cards grid */
        .rule-card {
            background: #ffffff;
            border-radius: var(--bs-radius);
            overflow: hidden;
            box-shadow: var(--bs-shadow-sm);
            border: 1px solid var(--bs-border);
            transition: var(--bs-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .rule-card-img {
            height: 180px;
            object-fit: cover;
            width: 100%;
        }

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

        .rule-card-tag {
            display: inline-block;
            background: var(--bs-primary-soft);
            color: var(--bs-primary);
            font-weight: 700;
            font-size: 0.75rem;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
            width: fit-content;
        }

        .rule-card-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--bs-text);
        }

        .rule-card-text {
            color: var(--bs-text-muted);
            font-size: 0.9rem;
            line-height: 1.65;
            flex: 1;
        }

        /* Process timeline */
        .timeline {
            position: relative;
            padding-left: 28px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 6px;
            top: 8px;
            bottom: 8px;
            width: 3px;
            background: var(--bs-primary-soft);
            border-radius: 10px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 28px;
            padding-left: 24px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -25px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--bs-primary);
            box-shadow: 0 0 0 4px rgba(26, 92, 255, 0.15);
        }

        .timeline-title {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--bs-text);
            margin-bottom: 6px;
        }

        .timeline-text {
            color: var(--bs-text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* FAQ */
        .accordion-item {
            border: 1px solid var(--bs-border);
            border-radius: var(--bs-radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--bs-shadow-sm);
            background: #fff;
        }

        .accordion-button {
            font-weight: 700;
            color: var(--bs-text);
            padding: 18px 22px;
            background: #fff;
        }

        .accordion-button:not(.collapsed) {
            background: var(--bs-primary-soft);
            color: var(--bs-primary);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(26, 92, 255, 0.2);
            border-color: transparent;
        }

        .accordion-body {
            color: var(--bs-text-muted);
            line-height: 1.7;
            padding: 18px 22px;
        }

        /* CTA Section */
        .cta-section {
            background: var(--bs-dark-bg);
            background-image: linear-gradient(135deg, #0d1b2a, #1a3a5c);
            border-radius: var(--bs-radius);
            padding: 56px 40px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            right: -60px;
            top: -60px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(255,184,0,0.25), transparent 70%);
            border-radius: 50%;
        }

        .cta-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }

        .cta-text {
            color: rgba(255,255,255,0.75);
            font-size: 1.05rem;
            max-width: 550px;
            position: relative;
            z-index: 2;
            margin-bottom: 24px;
        }

        .btn-cta {
            background: var(--bs-accent);
            color: #1e293b;
            font-weight: 800;
            padding: 14px 32px;
            border-radius: 40px;
            border: none;
            font-size: 1.05rem;
            transition: var(--bs-transition);
            box-shadow: 0 8px 24px rgba(255, 184, 0, 0.4);
            position: relative;
            z-index: 2;
        }

        .btn-cta:hover {
            background: #ffc933;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(255, 184, 0, 0.5);
        }

        /* Footer */
        .site-footer {
            background: var(--bs-dark-bg);
            color: rgba(255,255,255,0.75);
            padding: 60px 0 30px;
            margin-top: 60px;
        }

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

        .footer-brand .logo {
            font-size: 1.4rem;
            margin-bottom: 12px;
            color: #fff;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
            color: rgba(255,255,255,0.6);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.6);
            margin-bottom: 10px;
            font-size: 0.9rem;
            transition: var(--bs-transition);
        }

        .footer-col a:hover {
            color: #ffb800;
            transform: translateX(4px);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.85rem;
        }

        .badge-18 {
            display: inline-block;
            background: #ffb800;
            color: #1e293b;
            font-weight: 800;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
        }

        .copyright {
            color: rgba(255,255,255,0.55);
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 80px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bs-dark-bg);
            border: 2px solid #ffb800;
            box-shadow: 0 4px 20px rgba(255, 184, 0, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffb800;
            font-size: 1.5rem;
            transition: var(--bs-transition);
            animation: floatBreath 3s ease-in-out infinite;
            cursor: pointer;
            opacity: 0.7;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.15);
            box-shadow: 0 8px 28px rgba(255, 184, 0, 0.55);
            animation-play-state: paused;
        }

        @keyframes floatBreath {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 12px 24px rgba(0,0,0,0.1);
                border-radius: 0 0 16px 16px;
                z-index: 998;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                text-align: left;
                padding: 14px 18px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-actions .btn-login {
                display: none;
            }
            .btn-signup {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .hero-section {
                padding: 48px 0 56px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-data-panel {
                margin-top: 28px;
                padding: 22px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .stats-row {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .cta-title {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .feature-block {
                padding: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category2 */
:root {
            --primary-blue: #0D47A1;
            --primary-blue-dark: #093170;
            --primary-blue-light: #E3F2FD;
            --accent-gold: #FFB300;
            --accent-gold-dark: #FF8F00;
            --text-primary: #1A1A2E;
            --text-secondary: #5A6A7E;
            --text-muted: #8A9BB5;
            --bg-white: #FFFFFF;
            --bg-soft: #F5F9FF;
            --bg-footer: #0A1929;
            --border-color: #E0E7EF;
            --border-light: #EDF2F9;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(13, 71, 161, 0.06);
            --shadow-md: 0 8px 24px rgba(13, 71, 161, 0.1);
            --shadow-lg: 0 16px 48px rgba(13, 71, 161, 0.16);
            --shadow-hover: 0 12px 32px rgba(13, 71, 161, 0.18);
            --font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: var(--font-family);
            background-color: var(--bg-white);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        
        a:hover {
            color: var(--primary-blue);
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button:focus, a:focus, input:focus, select:focus, textarea:focus {
            outline: 3px solid rgba(13, 71, 161, 0.35);
            outline-offset: 2px;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* Header */
        .site-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }
        
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            flex-wrap: wrap;
            gap: 16px;
        }
        
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary-blue);
            letter-spacing: -0.5px;
            white-space: nowrap;
        }
        
        .logo span {
            color: var(--accent-gold-dark);
        }
        
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        
        .main-nav a {
            padding: 10px 16px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-secondary);
            border-radius: 30px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        
        .main-nav a:hover {
            background: var(--bg-soft);
            color: var(--primary-blue);
        }
        
        .main-nav a.active {
            background: var(--primary-blue);
            color: #fff;
        }
        
        .btn {
            padding: 12px 26px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-align: center;
            justify-content: center;
        }
        
        .btn-primary {
            background: var(--primary-blue);
            color: #fff;
            box-shadow: 0 4px 16px rgba(13, 71, 161, 0.3);
        }
        
        .btn-primary:hover {
            background: var(--primary-blue-dark);
            color: #fff;
            box-shadow: 0 8px 24px rgba(13, 71, 161, 0.4);
            transform: translateY(-2px);
        }
        
        .btn-gold {
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-dark));
            color: #1A1A2E;
            box-shadow: 0 4px 16px rgba(255, 179, 0, 0.35);
        }
        
        .btn-gold:hover {
            color: #1A1A2E;
            box-shadow: 0 8px 24px rgba(255, 179, 0, 0.45);
            transform: translateY(-2px);
        }
        
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }
        
        .btn-outline-light:hover {
            background: #fff;
            color: var(--primary-blue);
            border-color: #fff;
        }
        
        .btn-lg {
            padding: 16px 34px;
            font-size: 1.1rem;
        }
        
        /* Mobile Nav Toggle */
        .nav-toggle {
            display: none;
            background: var(--primary-blue);
            color: #fff;
            border: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            font-size: 1.3rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        
        /* Hero Section */
        .hero-section {
            background: linear-gradient(145deg, #0A1929 0%, #0D47A1 55%, #1A5276 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0 90px;
            color: #fff;
        }
        
        .hero-section::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 179, 0, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        
        .hero-text h1 {
            font-size: 2.9rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        
        .hero-text h1 .highlight {
            color: var(--accent-gold);
            position: relative;
        }
        
        .hero-text p.lead {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            line-height: 1.7;
            max-width: 520px;
        }
        
        .hero-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.9);
        }
        
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        
        .hero-visual {
            position: relative;
            z-index: 2;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        
        .hero-visual-card {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: 32px;
            width: 100%;
            max-width: 460px;
        }
        
        .hero-visual-card .stat-number {
            font-size: 3rem;
            font-weight: 900;
            color: var(--accent-gold);
            line-height: 1;
            margin-bottom: 8px;
        }
        
        .hero-visual-card .stat-label {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.95rem;
        }
        
        .hero-stat-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 20px;
        }
        
        .hero-stat-item {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 18px;
            text-align: center;
        }
        
        .hero-stat-item .value {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
        }
        
        .hero-stat-item .label {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }
        
        /* Section Base */
        .section {
            padding: 70px 0;
        }
        
        .section-alt {
            background: var(--bg-soft);
        }
        
        .section-header {
            margin-bottom: 40px;
        }
        
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 700px;
            line-height: 1.7;
        }
        
        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
        }
        
        /* Strategy Cards */
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 20px;
        }
        
        .strategy-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        
        .strategy-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-blue), var(--accent-gold));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-base);
        }
        
        .strategy-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
            border-color: rgba(13, 71, 161, 0.2);
        }
        
        .strategy-card:hover::before {
            transform: scaleX(1);
        }
        
        .strategy-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-blue-light);
            color: var(--primary-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 16px;
        }
        
        .strategy-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        
        .strategy-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        
        .strategy-card .learn-more {
            font-weight: 700;
            color: var(--primary-blue);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
        }
        
        .strategy-card .learn-more:hover {
            gap: 10px;
        }
        
        /* Detailed Steps Section */
        .steps-list {
            display: grid;
            gap: 20px;
        }
        
        .step-item {
            display: flex;
            gap: 20px;
            padding: 24px;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        
        .step-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(13, 71, 161, 0.2);
        }
        
        .step-number {
            width: 48px;
            height: 48px;
            min-width: 48px;
            border-radius: 50%;
            background: var(--primary-blue);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .step-content h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        
        .step-content p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        
        /* Image Section */
        .image-section-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        
        .image-section-grid img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        
        /* FAQ */
        .faq-list {
            max-width: 800px;
        }
        
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        
        .faq-question {
            padding: 20px 24px;
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
            user-select: none;
        }
        
        .faq-question .faq-icon {
            color: var(--primary-blue);
            transition: transform var(--transition-base);
            font-size: 0.9rem;
        }
        
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base);
            padding: 0 24px;
        }
        
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 20px;
        }
        
        .faq-answer p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            margin: 0;
        }
        
        /* CTA Section */
        .cta-section {
            background: linear-gradient(145deg, var(--primary-blue-dark), var(--primary-blue));
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            color: #fff;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 30px;
            align-items: center;
        }
        
        .cta-section h2 {
            font-size: 1.9rem;
            font-weight: 800;
            margin-bottom: 10px;
        }
        
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            margin-bottom: 0;
        }
        
        /* Footer */
        .site-footer {
            background: var(--bg-footer);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
            margin-top: 60px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-brand .logo {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 12px;
            display: block;
        }
        
        .footer-brand .logo span {
            color: var(--accent-gold);
        }
        
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 300px;
        }
        
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            padding: 6px 0;
            transition: color var(--transition-fast);
        }
        
        .footer-col a:hover {
            color: var(--accent-gold);
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        
        .badge-18 {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #D32F2F;
            color: #fff;
            font-weight: 800;
            font-size: 0.8rem;
            flex-shrink: 0;
        }
        
        .copyright {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        
        /* FAB */
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 1050;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-dark));
            color: #1A1A2E;
            border: 3px solid rgba(255, 255, 255, 0.7);
            box-shadow: 0 4px 20px rgba(255, 179, 0, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            cursor: pointer;
            transition: all var(--transition-base);
            opacity: 0.75;
            animation: fabBreathing 3s ease-in-out infinite;
        }
        
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(255, 179, 0, 0.55);
        }
        
        .fab-left:active {
            transform: scale(0.95);
        }
        
        @keyframes fabBreathing {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-5px); }
        }
        
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-text h1 {
                font-size: 2.4rem;
            }
            .hero-visual-card {
                max-width: 100%;
            }
            .strategy-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .image-section-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                background: #fff;
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-md);
                padding: 12px;
                margin-top: 8px;
            }
            .main-nav.show {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                border-radius: 8px;
            }
            .main-nav a.active {
                background: var(--primary-blue);
                color: #fff;
            }
            .header-inner {
                gap: 8px;
            }
            .hero-section {
                padding: 50px 0 60px;
            }
            .hero-text h1 {
                font-size: 1.9rem;
            }
            .section {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            .step-item {
                flex-direction: column;
                gap: 12px;
            }
            .cta-section {
                padding: 36px 24px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
            .fab-left {
                width: 48px;
                height: 48px;
                left: 12px;
                bottom: 80px;
                font-size: 1.2rem;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .hero-text h1 {
                font-size: 1.6rem;
            }
            .hero-text p.lead {
                font-size: 1rem;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 6px 12px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 13px 24px;
                font-size: 1rem;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .hero-stat-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .hero-visual-card {
                padding: 20px;
            }
            .hero-visual-card .stat-number {
                font-size: 2.2rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #0B3C25;
            --secondary-bg: #062315;
            --card-bg: #0E472B;
            --accent-gold: #FFCC00;
            --accent-lime: #32CD32;
            --text-primary: #FFFDF0;
            --text-secondary: #C5E2D2;
            --text-muted: rgba(197, 226, 210, 0.7);
            --border-subtle: rgba(255, 204, 0, 0.15);
            --border-gold: rgba(255, 204, 0, 0.35);
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.2);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
            --shadow-gold: 0 4px 20px rgba(255, 204, 0, 0.15);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --font-sans: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
            --transition-sharp: 0.18s cubic-bezier(0.4, 0, 0.6, 1);
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 32px;
            --spacing-xl: 48px;
            --spacing-2xl: 64px;
            --spacing-3xl: 80px;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            opacity: 0.08;
            z-index: -1;
            pointer-events: none;
        }

        a {
            color: var(--accent-gold);
            text-decoration: none;
            transition: color var(--transition-base);
        }

        a:hover, a:focus-visible {
            color: var(--accent-lime);
            text-decoration: underline;
            outline: none;
        }

        a:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 2px;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
            transition: all var(--transition-base);
        }

        button:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
            width: 100%;
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(6, 35, 21, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-sm);
            transition: background var(--transition-base);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: var(--spacing-lg);
            flex-wrap: nowrap;
        }

        .logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            text-decoration: none;
            transition: color var(--transition-base);
        }

        .logo:hover {
            color: var(--accent-gold);
            text-decoration: none;
        }

        .logo span {
            background: var(--accent-gold);
            color: #062315;
            font-size: 0.7rem;
            font-weight: 800;
            padding: 2px 8px;
            border-radius: 20px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
            line-height: 1.4;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .main-nav::-webkit-scrollbar {
            display: none;
        }

        .main-nav a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 24px;
            white-space: nowrap;
            transition: all var(--transition-base);
            border: 1px solid transparent;
            text-decoration: none;
            position: relative;
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(255, 204, 0, 0.08);
            border-color: var(--border-subtle);
            text-decoration: none;
        }

        .main-nav a.active {
            color: #062315;
            background: var(--accent-gold);
            font-weight: 700;
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-gold);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-shrink: 0;
        }

        .btn-login {
            color: var(--text-primary);
            font-size: 0.9rem;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 24px;
            border: 1px solid transparent;
            background: transparent;
            white-space: nowrap;
            transition: all var(--transition-base);
        }

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.15);
        }

        .btn-signup {
            background: var(--accent-lime);
            color: #062315;
            font-size: 0.9rem;
            font-weight: 700;
            padding: 8px 20px;
            border-radius: 24px;
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(50, 205, 50, 0.3);
            transition: all var(--transition-bounce);
            border: 1px solid var(--accent-lime);
        }

        .btn-signup:hover {
            background: #3dd93d;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(50, 205, 50, 0.4);
            color: #062315;
        }

        .btn-signup:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(50, 205, 50, 0.3);
        }

        .mobile-menu-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            color: var(--text-primary);
            font-size: 1.2rem;
            transition: all var(--transition-base);
        }

        .mobile-menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ========== FAB ========== */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 900;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #0B3C25, #062315);
            border: 3px solid var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255, 204, 0, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.5rem;
            opacity: 0.75;
            transition: all var(--transition-bounce);
            cursor: pointer;
            text-decoration: none;
            animation: floatBreath 3s ease-in-out infinite;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 28px rgba(255, 204, 0, 0.45);
            text-decoration: none;
            color: var(--accent-gold);
        }

        .fab-left:active {
            transform: scale(0.95) translateY(2px);
        }

        .fab-left .notification-dot {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #FF0040;
            border-radius: 50%;
            border: 2px solid #062315;
            animation: blinkDot 1.5s ease-in-out infinite;
        }

        @keyframes floatBreath {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }

        @keyframes blinkDot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            padding: var(--spacing-3xl) 0 var(--spacing-2xl);
            background: linear-gradient(160deg, rgba(6, 35, 21, 0.9) 0%, rgba(11, 60, 37, 0.85) 50%, rgba(6, 35, 21, 0.95) 100%);
            border-bottom: 1px solid var(--border-subtle);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 204, 0, 0.06) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(50, 205, 50, 0.04) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

        .hero-text {
            text-align: left;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
            background: rgba(50, 205, 50, 0.12);
            color: var(--accent-lime);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: var(--spacing-md);
            border: 1px solid rgba(50, 205, 50, 0.25);
        }

        .hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.02em;
            text-align: left;
        }

        .hero h1 .highlight {
            color: var(--accent-gold);
            position: relative;
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-lg);
            max-width: 520px;
            line-height: 1.7;
            text-align: left;
        }

        .hero-actions {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            align-items: center;
        }

        .btn-primary {
            background: var(--accent-gold);
            color: #062315;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            border: none;
            box-shadow: 0 4px 16px rgba(255, 204, 0, 0.3);
            transition: all var(--transition-bounce);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-sm);
            letter-spacing: 0.01em;
        }

        .btn-primary:hover {
            background: #ffd633;
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(255, 204, 0, 0.45);
            color: #062315;
            text-decoration: none;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(255, 204, 0, 0.3);
        }

        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1rem;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            border: 2px solid var(--border-gold);
            transition: all var(--transition-base);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .btn-secondary:hover {
            background: rgba(255, 204, 0, 0.08);
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            text-decoration: none;
            transform: translateY(-2px);
        }

        .hero-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-gold);
            min-height: 360px;
        }

        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
            transition: transform 0.6s ease;
        }

        .hero-visual:hover img {
            transform: scale(1.03);
        }

        .hero-visual-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);
            background: linear-gradient(to top, rgba(6, 35, 21, 0.9) 0%, transparent 100%);
            pointer-events: none;
        }

        .hero-visual-overlay h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
        }

        .hero-visual-overlay p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin: 0;
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--spacing-2xl) 0;
            position: relative;
        }

        .section-alt {
            background: rgba(6, 35, 21, 0.5);
        }

        .section-header {
            margin-bottom: var(--spacing-xl);
            text-align: left;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.01em;
            text-align: left;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
            margin: 0;
            text-align: left;
        }

        .section-divider {
            width: 60px;
            height: 3px;
            background: var(--accent-gold);
            border-radius: 2px;
            margin: var(--spacing-md) 0 var(--spacing-lg);
        }

        /* ========== PAIN POINT / CLUE SECTION ========== */
        .clue-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: start;
        }

        .clue-questions {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .clue-question-item {
            background: var(--card-bg);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            transition: all var(--transition-base);
            cursor: default;
            position: relative;
            overflow: hidden;
        }

        .clue-question-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--accent-gold);
            border-radius: 0 2px 2px 0;
        }

        .clue-question-item:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }

        .clue-question-item .clue-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 204, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.1rem;
            margin-bottom: var(--spacing-sm);
        }

        .clue-question-item h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
        }

        .clue-question-item p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin: 0;
            line-height: 1.6;
        }

        .clue-solution-panel {
            background: linear-gradient(135deg, rgba(11, 60, 37, 0.95), rgba(6, 35, 21, 0.98));
            border: 2px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-md);
            position: sticky;
            top: 100px;
        }

        .clue-solution-panel h3 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-md);
            text-align: left;
        }

        .clue-solution-panel .solution-list {
            list-style: none;
            padding: 0;
            margin: 0 0 var(--spacing-lg);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .clue-solution-panel .solution-list li {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .clue-solution-panel .solution-list li i {
            color: var(--accent-lime);
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ========== STATS ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            text-align: center;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }

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

        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.2;
            margin-bottom: var(--spacing-xs);
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ========== APP FEATURES ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .feature-item {
            background: transparent;
            border: none;
            padding: var(--spacing-lg);
            transition: all var(--transition-base);
            border-radius: var(--radius-md);
            position: relative;
        }

        .feature-item:hover {
            background: rgba(255, 255, 255, 0.03);
            transform: translateY(-4px);
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(255, 204, 0, 0.1);
            border: 1px solid var(--border-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.4rem;
            margin-bottom: var(--spacing-md);
            transition: all var(--transition-base);
        }

        .feature-item:hover .feature-icon {
            background: rgba(255, 204, 0, 0.18);
            box-shadow: var(--shadow-gold);
        }

        .feature-item h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
            text-align: left;
        }

        .feature-item p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin: 0;
            line-height: 1.7;
            text-align: left;
        }

        /* ========== DOWNLOAD CTA ========== */
        .download-cta {
            background: linear-gradient(135deg, rgba(255, 204, 0, 0.1), rgba(50, 205, 50, 0.08));
            border: 2px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
            box-shadow: var(--shadow-md);
        }

        .download-cta-text {
            flex: 1;
            min-width: 280px;
        }

        .download-cta-text h3 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
            text-align: left;
        }

        .download-cta-text p {
            color: var(--text-secondary);
            font-size: 1rem;
            margin: 0;
            line-height: 1.7;
            text-align: left;
        }

        .download-buttons {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }

        .btn-download {
            background: var(--text-primary);
            color: #062315;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 14px 24px;
            border-radius: var(--radius-md);
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-sm);
            transition: all var(--transition-bounce);
            text-decoration: none;
            border: none;
            box-shadow: var(--shadow-sm);
        }

        .btn-download:hover {
            background: #ffffff;
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            color: #062315;
            text-decoration: none;
        }

        .btn-download:active {
            transform: translateY(0);
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
            max-width: 820px;
        }

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

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            padding: var(--spacing-lg);
            cursor: pointer;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.05rem;
            transition: color var(--transition-base);
        }

        .faq-question:hover {
            color: var(--accent-gold);
        }

        .faq-question i {
            transition: transform var(--transition-base);
            color: var(--accent-gold);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 var(--spacing-lg);
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-answer.open {
            max-height: 500px;
            padding-bottom: var(--spacing-lg);
        }

        /* ========== PRIVACY NOTE ========== */
        .privacy-note {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: var(--spacing-md) var(--spacing-lg);
            margin-top: var(--spacing-lg);
            max-width: 820px;
        }

        .privacy-note i {
            color: var(--accent-gold);
            margin-top: 4px;
            flex-shrink: 0;
        }

        .privacy-note p {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin: 0;
            line-height: 1.6;
        }

        /* ========== FINAL CTA ========== */
        .final-cta {
            background: linear-gradient(135deg, rgba(255, 204, 0, 0.12), rgba(50, 205, 50, 0.06));
            border: 2px solid var(--border-gold);
            border-radius: var(--radius-xl);
            padding: var(--spacing-2xl) var(--spacing-xl);
            text-align: center;
            box-shadow: var(--shadow-md);
            position: relative;
            overflow: hidden;
        }

        .final-cta::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 204, 0, 0.08) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }

        .final-cta h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.01em;
            position: relative;
            z-index: 1;
        }

        .final-cta p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin: 0 auto var(--spacing-lg);
            max-width: 560px;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }

        .final-cta .btn-primary {
            position: relative;
            z-index: 1;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: rgba(6, 35, 21, 0.98);
            border-top: 1px solid var(--border-subtle);
            padding: var(--spacing-2xl) 0 var(--spacing-lg);
            margin-top: var(--spacing-2xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }

        .footer-brand .logo {
            font-size: 1.1rem;
            margin-bottom: var(--spacing-md);
            display: inline-flex;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.02em;
        }

        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.9rem;
            padding: var(--spacing-xs) 0;
            transition: all var(--transition-base);
            text-decoration: none;
        }

        .footer-col a:hover {
            color: var(--accent-gold);
            text-decoration: none;
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            padding-top: var(--spacing-lg);
            border-top: 1px solid var(--border-subtle);
            flex-wrap: wrap;
        }

        .badge-18 {
            background: #D32F2F;
            color: #ffffff;
            font-weight: 800;
            font-size: 0.8rem;
            padding: 4px 10px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(211, 47, 47, 0.4);
        }

        .copyright {
            color: var(--text-muted);
            font-size: 0.85rem;
            flex: 1;
            min-width: 200px;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero-content {
                gap: var(--spacing-lg);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: var(--spacing-lg);
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                min-height: 60px;
                gap: var(--spacing-sm);
                padding: var(--spacing-sm) 0;
            }

            .logo {
                font-size: 1rem;
                order: 1;
                flex-shrink: 0;
            }

            .nav-actions {
                order: 2;
                margin-left: auto;
                gap: var(--spacing-xs);
            }

            .btn-login {
                padding: 6px 12px;
                font-size: 0.85rem;
            }

            .btn-signup {
                padding: 6px 14px;
                font-size: 0.85rem;
            }

            .mobile-menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
                order: 3;
                width: 40px;
                height: 40px;
                padding: 0;
            }

            .main-nav {
                order: 4;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: var(--spacing-xs);
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.35s ease;
                padding: 0;
            }

            .main-nav.open {
                max-height: 320px;
                padding: var(--spacing-sm) 0;
                border-top: 1px solid var(--border-subtle);
            }

            .main-nav a {
                padding: 10px 16px;
                border-radius: var(--radius-sm);
                text-align: left;
            }

            .hero {
                padding: var(--spacing-2xl) 0 var(--spacing-xl);
            }

            .hero-content {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .hero h1 {
                font-size: 1.9rem;
            }

            .hero-subtitle {
                font-size: 1rem;
            }

            .hero-visual {
                min-height: 260px;
            }

            .hero-visual img {
                min-height: 260px;
            }

            .section {
                padding: var(--spacing-xl) 0;
            }

            .section-header h2 {
                font-size: 1.6rem;
            }

            .clue-section {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .clue-solution-panel {
                position: static;
                top: auto;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }

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

            .stat-number {
                font-size: 1.7rem;
            }

            .download-cta {
                flex-direction: column;
                align-items: flex-start;
                padding: var(--spacing-lg);
            }

            .download-buttons {
                width: 100%;
                flex-direction: column;
            }

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

            .final-cta {
                padding: var(--spacing-xl) var(--spacing-lg);
            }

            .final-cta h2 {
                font-size: 1.6rem;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-sm);
            }

            .fab-left {
                bottom: 80px;
                left: 12px;
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
            }
        }

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

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

            .hero-subtitle {
                font-size: 0.95rem;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
            }

            .btn-primary, .btn-secondary {
                width: 100%;
                justify-content: center;
            }

            .section-header h2 {
                font-size: 1.4rem;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-xs);
            }

            .stat-number {
                font-size: 1.4rem;
            }

            .stat-label {
                font-size: 0.8rem;
            }

            .feature-item {
                padding: var(--spacing-md);
            }

            .faq-question {
                font-size: 0.95rem;
                padding: var(--spacing-md);
            }

            .faq-answer {
                padding: 0 var(--spacing-md);
            }

            .faq-answer.open {
                padding-bottom: var(--spacing-md);
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .footer-brand {
                grid-column: auto;
            }
        }