/* roulang page: index */
:root {
            --bg-primary: #0B1A30;
            --bg-secondary: #0F0C20;
            --bg-card: rgba(20, 25, 45, 0.85);
            --bg-card-hover: rgba(28, 35, 58, 0.9);
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --accent-pink: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-color: rgba(0, 240, 255, 0.2);
            --border-glow: rgba(0, 240, 255, 0.6);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --font-sans: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            background: linear-gradient(160deg, #0B1A30 0%, #0F0C20 50%, #0B1A30 100%);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a { color: var(--accent-cyan); text-decoration: none; transition: var(--transition-base); }
        a:hover { color: var(--accent-lime); text-shadow: 0 0 12px rgba(204, 255, 0, 0.5); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, select, textarea { font-family: inherit; }

        .container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
        .section-padding { padding: 90px 0; }

        /* Header */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(11, 26, 48, 0.82); backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            transition: var(--transition-base);
        }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 72px;
        }
        .logo-text {
            font-size: 1.35rem; font-weight: 800; letter-spacing: -0.3px;
            background: linear-gradient(135deg, #00F0FF 0%, #CCFF00 100%);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text; cursor: pointer; user-select: none;
            white-space: nowrap;
        }
        .desktop-nav { display: flex; align-items: center; gap: 34px; }
        .desktop-nav a {
            font-weight: 600; font-size: 0.95rem; color: var(--text-secondary);
            position: relative; padding: 8px 0;
        }
        .desktop-nav a.active, .desktop-nav a:hover {
            color: var(--accent-cyan);
        }
        .desktop-nav a::after {
            content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px;
            background: var(--accent-cyan); transition: width 0.3s ease;
        }
        .desktop-nav a.active::after, .desktop-nav a:hover::after { width: 100%; }
        .auth-buttons { display: flex; gap: 16px; align-items: center; }
        .btn-login {
            background: transparent; border: 1px solid var(--accent-cyan); color: var(--accent-cyan);
            padding: 10px 24px; border-radius: 50px; font-weight: 700; cursor: pointer;
            transition: var(--transition-base);
        }
        .btn-login:hover { background: rgba(0, 240, 255, 0.1); box-shadow: 0 0 15px rgba(0, 240, 255, 0.3); }
        .btn-signup {
            background: linear-gradient(135deg, #00F0FF 0%, #CCFF00 100%);
            border: none; color: #0B1A30; padding: 11px 28px; border-radius: 50px; font-weight: 800;
            cursor: pointer; transition: var(--transition-base); box-shadow: 0 4px 15px rgba(0, 240, 255, 0.35);
        }
        .btn-signup:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(0, 240, 255, 0.5); }
        .mobile-menu-toggle { display: none; background: none; border: none; color: var(--accent-cyan); font-size: 2rem; cursor: pointer; padding: 4px 10px; }
        .mobile-menu {
            display: none; flex-direction: column; background: rgba(11, 26, 48, 0.98);
            backdrop-filter: blur(20px); padding: 20px; gap: 14px; border-top: 1px solid var(--border-color);
        }
        .mobile-menu a { font-weight: 600; font-size: 1.1rem; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
        .mobile-menu .auth-buttons { flex-direction: column; gap: 10px; padding-top: 10px; }

        @media (max-width: 1024px) {
            .desktop-nav, .auth-buttons.desktop-only { display: none; }
            .mobile-menu-toggle { display: block; }
            .mobile-menu.open { display: flex; }
            .header-inner { height: 64px; }
            .logo-text { font-size: 1.15rem; }
        }

        /* Hero - White Paper Lead Gen Style */
        .hero-section {
            padding: 140px 0 90px; position: relative; overflow: hidden;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
        }
        .hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(11, 26, 48, 0.88) 0%, rgba(15, 12, 32, 0.8) 100%); }
        .hero-container { position: relative; z-index: 2; display: flex; gap: 60px; align-items: center; }
        .hero-content { flex: 1; }
        .hero-badge {
            display: inline-block; background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.4); color: var(--accent-cyan);
            padding: 8px 20px; border-radius: 50px; font-weight: 700; font-size: 0.9rem; margin-bottom: 24px;
        }
        .hero-title {
            font-size: 3.2rem; font-weight: 900; line-height: 1.2; margin-bottom: 28px;
            background: linear-gradient(180deg, #FFFFFF 20%, #A6E8FF 100%);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
        }
        .hero-desc { font-size: 1.15rem; color: var(--text-secondary); margin-bottom: 36px; max-width: 620px; line-height: 1.7; }
        .hero-form-block {
            background: rgba(15, 12, 32, 0.7); backdrop-filter: blur(12px);
            border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 32px;
            max-width: 440px; width: 100%;
        }
        .hero-form-block h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 12px; color: var(--accent-cyan); }
        .hero-form-block p { color: var(--text-secondary); margin-bottom: 20px; font-size: 0.95rem; }
        .hero-form { display: flex; flex-direction: column; gap: 16px; }
        .hero-form input {
            background: rgba(255,255,255,0.06); border: 1px solid var(--border-color); border-radius: 50px;
            padding: 14px 20px; color: #fff; font-size: 1rem; outline: none; transition: var(--transition-base);
        }
        .hero-form input:focus { border-color: var(--accent-cyan); box-shadow: 0 0 15px rgba(0, 240, 255, 0.2); }
        .hero-form button {
            background: linear-gradient(135deg, #00F0FF 0%, #CCFF00 100%); border: none; border-radius: 50px;
            padding: 14px; font-weight: 800; font-size: 1.05rem; color: #0B1A30; cursor: pointer;
            transition: var(--transition-base); box-shadow: 0 4px 20px rgba(0, 240, 255, 0.4);
        }
        .hero-form button:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(204, 255, 0, 0.4); }
        .hero-visual { flex: 1; display: flex; justify-content: center; align-items: center; }
        .hero-visual img { max-width: 480px; border-radius: var(--radius-lg); box-shadow: var(--shadow-neon); }

        @media (max-width: 900px) {
            .hero-container { flex-direction: column; }
            .hero-title { font-size: 2.2rem; }
            .hero-visual img { max-width: 320px; }
        }

        /* Section Styles */
        .section-label {
            display: inline-block; font-size: 0.85rem; font-weight: 700; color: var(--accent-lime);
            text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 12px;
        }
        .section-title { font-size: 2.2rem; font-weight: 800; margin-bottom: 16px; }
        .section-desc { color: var(--text-secondary); max-width: 720px; margin-bottom: 50px; font-size: 1.05rem; }

        /* Features Grid */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .feature-item {
            background: var(--bg-card); border-radius: var(--radius-md); padding: 36px 28px;
            border: 1px solid transparent; transition: var(--transition-base);
        }
        .feature-item:hover { border-color: var(--accent-cyan); transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5); }
        .feature-icon { font-size: 2.6rem; color: var(--accent-cyan); margin-bottom: 18px; }
        .feature-item h4 { font-size: 1.25rem; margin-bottom: 10px; }
        .feature-item p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; }

        @media (max-width: 1024px) { .features-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 600px) { .features-grid { grid-template-columns: 1fr; } }

        /* Customer Testimonials */
        .testimonial-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
        .testimonial-card {
            background: var(--bg-card); border-radius: var(--radius-md); padding: 30px;
            border-left: 5px solid var(--accent-cyan); position: relative;
        }
        .testimonial-card::before {
            content: '\201C'; font-size: 4rem; color: rgba(0, 240, 255, 0.2); position: absolute; top: 8px; right: 20px; font-family: serif;
        }
        .testimonial-card p { font-style: italic; color: var(--text-secondary); margin-bottom: 18px; line-height: 1.7; }
        .testimonial-author { display: flex; align-items: center; gap: 14px; }
        .testimonial-author .avatar {
            width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(135deg, #00F0FF, #CCFF00);
            display: flex; align-items: center; justify-content: center; font-weight: 800; color: #0B1A30;
        }
        .author-name { font-weight: 700; }
        .author-role { font-size: 0.85rem; color: var(--text-muted); }

        @media (max-width: 700px) { .testimonial-grid { grid-template-columns: 1fr; } }

        /* News / CMS Section */
        .news-layout { display: grid; grid-template-columns: 1fr 300px; gap: 40px; }
        .news-list { display: flex; flex-direction: column; gap: 20px; }
        .news-item {
            display: flex; gap: 20px; padding: 20px; background: var(--bg-card); border-radius: var(--radius-md);
            transition: var(--transition-base); border: 1px solid transparent;
        }
        .news-item:hover { border-color: var(--accent-cyan); transform: translateX(4px); }
        .news-item .news-content { flex: 1; }
        .news-item h4 { font-size: 1.1rem; margin-bottom: 6px; }
        .news-item h4 a { color: #fff; }
        .news-item h4 a:hover { color: var(--accent-cyan); }
        .news-item .news-meta { font-size: 0.85rem; color: var(--text-muted); display: flex; gap: 16px; }
        .news-item p { color: var(--text-secondary); font-size: 0.9rem; margin-top: 6px; }
        .no-news { padding: 30px; text-align: left; color: var(--text-muted); font-style: italic; }
        .news-sidebar { background: var(--bg-card); border-radius: var(--radius-md); padding: 28px; height: fit-content; border: 1px solid var(--border-color); }
        .news-sidebar h4 { margin-bottom: 18px; font-size: 1.15rem; color: var(--accent-lime); }

        @media (max-width: 800px) { .news-layout { grid-template-columns: 1fr; } }

        /* CTA Section */
        .cta-box {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.08) 0%, rgba(204, 255, 0, 0.05) 100%);
            border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 60px 40px;
            text-align: left;
        }
        .cta-box h2 { font-size: 2rem; margin-bottom: 16px; }
        .cta-box p { color: var(--text-secondary); margin-bottom: 30px; max-width: 600px; }
        .btn-cta-primary {
            background: var(--accent-lime); color: #0B1A30; padding: 14px 36px; border-radius: 50px;
            font-weight: 800; display: inline-block; transition: var(--transition-base); box-shadow: 0 4px 20px rgba(204, 255, 0, 0.3);
        }
        .btn-cta-primary:hover { transform: scale(1.04); box-shadow: 0 8px 30px rgba(204, 255, 0, 0.5); }

        /* FAQ */
        .faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
        .faq-item { background: var(--bg-card); border-radius: var(--radius-md); padding: 28px; border: 1px solid transparent; transition: var(--transition-base); }
        .faq-item:hover { border-color: var(--accent-cyan); }
        .faq-item h4 { font-size: 1.1rem; margin-bottom: 10px; color: var(--accent-lime); }
        .faq-item p { color: var(--text-secondary); line-height: 1.7; }
        @media (max-width: 700px) { .faq-grid { grid-template-columns: 1fr; } }

        /* Footer */
        .site-footer {
            background: rgba(8, 9, 15, 0.9); border-top: 1px solid var(--border-color); padding: 50px 0 30px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-col h4 { font-size: 1.2rem; margin-bottom: 16px; color: var(--accent-cyan); }
        .footer-col p, .footer-col a { font-size: 0.9rem; color: var(--text-muted); line-height: 1.8; }
        .footer-col a:hover { color: var(--accent-lime); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; justify-content: space-between; color: var(--text-muted); font-size: 0.85rem; }
        @media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr; } .footer-bottom { flex-direction: column; gap: 10px; } }

        /* FAB Cyber-Neon */
        .fab-left {
            position: fixed; left: 24px; bottom: 96px; z-index: 50;
            width: 56px; height: 56px; border-radius: 50px;
            background: rgba(0,0,0,0.6); backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), linear-gradient(135deg, #CCFF00, #00F0FF);
            background-origin: border-box; background-clip: content-box, border-box;
            display: flex; align-items: center; justify-content: center; cursor: pointer;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5); transition: var(--transition-base);
            color: var(--accent-cyan); font-size: 1.6rem;
        }
        .fab-left:hover { transform: scale(1.12); box-shadow: 0 0 28px rgba(0, 240, 255, 0.8); color: #CCFF00; }

/* roulang page: article */
:root {
            --bg-deep: #0A2E1C;
            --bg-forest: #123E25;
            --gold: #FFD700;
            --gold-hover: #FFC107;
            --red: #D32F2F;
            --red-hover: #B71C1C;
            --white: #FFFFFF;
            --pale-mint: #D1F2EB;
            --mint-hover: #A8E6CF;
            --text-muted: #A0C4B8;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.15);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.25);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.35);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: var(--white);
            background-color: var(--bg-deep);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

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

        a:hover {
            color: var(--gold);
        }

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

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

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

        /* Header & Navigation */
        .site-header {
            background: var(--bg-forest);
            border-bottom: 2px solid rgba(255, 215, 0, 0.2);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-md);
            backdrop-filter: blur(10px);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--gold);
            letter-spacing: -0.3px;
            white-space: nowrap;
            transition: var(--transition);
        }

        .logo-text:hover {
            color: var(--gold-hover);
            text-shadow: 0 0 12px rgba(255, 215, 0, 0.4);
        }

        .desktop-nav {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .desktop-nav a {
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--pale-mint);
            transition: var(--transition);
            white-space: nowrap;
        }

        .desktop-nav a:hover,
        .desktop-nav a.active {
            background: rgba(255, 215, 0, 0.12);
            color: var(--gold);
        }

        .auth-buttons {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .btn-login {
            padding: 8px 20px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.9rem;
            background: transparent;
            border: 2px solid var(--gold);
            color: var(--gold);
            white-space: nowrap;
        }

        .btn-login:hover {
            background: rgba(255, 215, 0, 0.15);
            border-color: var(--gold-hover);
            color: var(--gold-hover);
        }

        .btn-signup {
            padding: 8px 20px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--gold), #FFC107);
            color: var(--bg-deep);
            box-shadow: var(--shadow-gold);
            white-space: nowrap;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(255, 215, 0, 0.45);
            background: linear-gradient(135deg, #FFE55C, var(--gold));
        }

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

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--gold);
            font-size: 1.8rem;
            padding: 6px;
            border-radius: 8px;
            transition: var(--transition);
        }

        .mobile-menu-toggle:hover {
            background: rgba(255, 215, 0, 0.1);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: var(--bg-forest);
            padding: 20px;
            border-top: 1px solid rgba(255, 215, 0, 0.2);
            box-shadow: var(--shadow-lg);
        }

        .mobile-menu a {
            padding: 14px 16px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            color: var(--pale-mint);
            transition: var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(255, 215, 0, 0.1);
            color: var(--gold);
        }

        .mobile-menu .auth-buttons {
            margin-top: 12px;
            flex-direction: column;
            gap: 10px;
        }

        .mobile-menu .btn-login,
        .mobile-menu .btn-signup {
            width: 100%;
            text-align: center;
            padding: 12px 20px;
            font-size: 1rem;
        }

        /* Article Detail Styles */
        .article-hero {
            padding: 60px 0 40px;
            background: linear-gradient(180deg, #0A2E1C 0%, #0E3B24 100%);
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
        }

        .article-hero .container {
            max-width: 860px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            margin-bottom: 16px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .article-meta .category-badge {
            background: rgba(211, 47, 47, 0.2);
            color: var(--red);
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            border: 1px solid var(--red);
        }

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

        .article-meta time i {
            color: var(--gold);
        }

        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--white);
            line-height: 1.3;
            margin-bottom: 20px;
            letter-spacing: -0.4px;
        }

        .article-excerpt {
            font-size: 1.15rem;
            color: var(--pale-mint);
            line-height: 1.7;
            border-left: 4px solid var(--gold);
            padding-left: 20px;
            margin-top: 16px;
            background: rgba(255, 255, 255, 0.03);
            padding: 16px 20px;
            border-radius: var(--radius-md);
        }

        .article-featured-image {
            margin-top: 28px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 2px solid rgba(255, 215, 0, 0.25);
        }

        .article-featured-image img {
            width: 100%;
            object-fit: cover;
            max-height: 460px;
        }

        /* Article Content */
        .article-content-wrapper {
            padding: 50px 0;
        }

        .article-content-wrapper .container {
            max-width: 860px;
        }

        .article-body {
            color: var(--white);
            font-size: 1.05rem;
            line-height: 1.75;
        }

        .article-body h2 {
            font-size: 1.7rem;
            font-weight: 700;
            margin: 36px 0 16px;
            color: var(--gold);
            border-bottom: 2px solid rgba(255, 215, 0, 0.25);
            padding-bottom: 10px;
        }

        .article-body h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin: 28px 0 12px;
            color: var(--pale-mint);
        }

        .article-body p {
            margin-bottom: 18px;
            color: #D1E5DB;
        }

        .article-body ul,
        .article-body ol {
            margin: 16px 0 24px 24px;
            color: #D1E5DB;
        }

        .article-body li {
            margin-bottom: 10px;
            padding-left: 6px;
        }

        .article-body li::marker {
            color: var(--gold);
        }

        .article-body strong {
            color: var(--gold);
            font-weight: 700;
        }

        .article-body a {
            color: var(--gold);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--gold-hover);
        }

        .article-body blockquote {
            background: rgba(255, 215, 0, 0.06);
            border-left: 4px solid var(--gold);
            padding: 16px 20px;
            margin: 24px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-style: italic;
            color: var(--pale-mint);
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body .highlight-box {
            background: rgba(211, 47, 47, 0.12);
            border: 1px solid rgba(211, 47, 47, 0.4);
            padding: 16px 20px;
            border-radius: var(--radius-md);
            margin: 24px 0;
            color: var(--white);
            font-weight: 600;
        }

        /* Article Footer CTAs */
        .article-cta-section {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 2px solid rgba(255, 215, 0, 0.2);
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .article-cta-section .btn-cta-primary {
            padding: 14px 32px;
            border-radius: 25px;
            font-weight: 800;
            font-size: 1.05rem;
            background: linear-gradient(135deg, #D32F2F, #B71C1C);
            color: var(--white);
            box-shadow: 0 4px 18px rgba(211, 47, 47, 0.4);
        }

        .article-cta-section .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(211, 47, 47, 0.55);
            background: linear-gradient(135deg, #E53935, #C62828);
        }

        .article-cta-section .btn-cta-secondary {
            padding: 14px 32px;
            border-radius: 25px;
            font-weight: 800;
            font-size: 1.05rem;
            background: transparent;
            border: 2px solid var(--gold);
            color: var(--gold);
        }

        .article-cta-section .btn-cta-secondary:hover {
            background: rgba(255, 215, 0, 0.12);
            border-color: var(--gold-hover);
            color: var(--gold-hover);
        }

        /* Related Section */
        .related-section {
            padding: 40px 0 60px;
        }

        .related-section .container {
            max-width: 860px;
        }

        .related-section h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--gold);
            margin-bottom: 24px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }

        .related-card {
            background: var(--bg-forest);
            border-radius: var(--radius-md);
            padding: 20px;
            border: 1px solid rgba(255, 215, 0, 0.15);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .related-card:hover {
            border-color: var(--gold);
            box-shadow: var(--shadow-gold);
            transform: translateY(-3px);
        }

        .related-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--white);
            line-height: 1.4;
        }

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

        .related-card .related-date {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* Error / Not Found State */
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            min-height: 50vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .article-not-found i {
            font-size: 4rem;
            color: var(--gold);
            margin-bottom: 20px;
            opacity: 0.7;
        }

        .article-not-found h2 {
            font-size: 1.8rem;
            color: var(--white);
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 28px;
            max-width: 480px;
        }

        .article-not-found .btn-home {
            padding: 12px 28px;
            border-radius: 25px;
            background: linear-gradient(135deg, var(--gold), #FFC107);
            color: var(--bg-deep);
            font-weight: 800;
            font-size: 1rem;
        }

        .article-not-found .btn-home:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-gold);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-forest);
            border-top: 3px solid rgba(255, 215, 0, 0.3);
            padding: 50px 0 30px;
            margin-top: 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 30px;
        }

        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--gold);
            margin-bottom: 14px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .footer-col p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .footer-col a {
            display: inline-block;
            color: var(--pale-mint);
            font-size: 0.9rem;
            margin-bottom: 8px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 215, 0, 0.15);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #0A2E1C, #123E25);
            border: 3px solid var(--gold);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gold);
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: var(--shadow-gold);
            transition: var(--transition);
            opacity: 0.75;
            animation: floatFab 3s ease-in-out infinite;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 6px 28px rgba(255, 215, 0, 0.5);
        }

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

        .fab-left .notification-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--red);
            border: 2px solid var(--white);
            animation: blink 1.2s ease-in-out infinite;
        }

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

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

        /* Responsive Design */
        @media (max-width: 1024px) {
            .article-hero h1 {
                font-size: 2rem;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .desktop-nav,
            .auth-buttons.desktop-only {
                display: none;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .mobile-menu.active {
                display: flex;
            }

            .article-hero {
                padding: 40px 0 30px;
            }

            .article-hero h1 {
                font-size: 1.7rem;
            }

            .article-excerpt {
                font-size: 1rem;
            }

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

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

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

            .article-cta-section {
                flex-direction: column;
            }

            .article-cta-section .btn-cta-primary,
            .article-cta-section .btn-cta-secondary {
                width: 100%;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 60px;
            }

            .logo-text {
                font-size: 1.15rem;
            }

            .article-hero h1 {
                font-size: 1.45rem;
            }

            .article-body {
                font-size: 0.95rem;
            }

            .fab-left {
                width: 48px;
                height: 48px;
                bottom: 80px;
                left: 14px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: rgba(18, 62, 37, 0.7);
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-primary: #FFFFFF;
            --text-muted: #D1F2EB;
            --text-dim: #A8D5C5;
            --border-gold: #FFD700;
            --border-card: rgba(255, 215, 0, 0.15);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.25);
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-btn: 0 6px 20px rgba(211, 47, 47, 0.35);
            --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --font-body: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s ease;
            --nav-height: 72px;
        }

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

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

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

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

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

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

        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.18);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo-text {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: 0.3px;
            white-space: nowrap;
            background: linear-gradient(135deg, #FFD700 0%, #FFA500 60%, #FFD700 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo-text:hover {
            opacity: 0.85;
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .desktop-nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            position: relative;
            padding: 6px 0;
            transition: color var(--transition-base);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            transition: width var(--transition-smooth);
            border-radius: 2px;
        }
        .desktop-nav a:hover,
        .desktop-nav a.active {
            color: var(--accent-gold);
        }
        .desktop-nav a:hover::after,
        .desktop-nav a.active::after {
            width: 100%;
        }

        .auth-buttons {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            color: var(--text-muted);
            padding: 9px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            border: 1.5px solid rgba(209, 242, 235, 0.35);
            transition: all var(--transition-base);
        }
        .btn-login:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            box-shadow: 0 0 14px rgba(255, 215, 0, 0.15);
        }
        .btn-signup {
            background: linear-gradient(135deg, #D32F2F 0%, #E53935 100%);
            color: #fff;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: var(--shadow-btn);
            transition: all var(--transition-base);
        }
        .btn-signup:hover {
            background: linear-gradient(135deg, #E53935 0%, #C62828 100%);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(211, 47, 47, 0.5);
        }
        .btn-signup:active {
            transform: translateY(0);
            box-shadow: var(--shadow-btn);
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--accent-gold);
            font-size: 1.6rem;
            padding: 8px;
            border-radius: 8px;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(10, 30, 20, 0.98);
            backdrop-filter: blur(20px);
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
            padding: 40px 24px;
            gap: 20px;
            z-index: 999;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-smooth);
        }
        .mobile-menu.open {
            display: flex;
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-menu a {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-muted);
            padding: 12px 20px;
            border-radius: 10px;
            width: 100%;
            text-align: center;
            transition: all var(--transition-base);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.06);
        }
        .mobile-menu .auth-buttons {
            display: flex;
            flex-direction: column;
            width: 100%;
            gap: 10px;
            margin-top: 12px;
        }
        .mobile-menu .btn-login,
        .mobile-menu .btn-signup {
            width: 100%;
            text-align: center;
            padding: 12px 20px;
            border-radius: 50px;
            font-size: 0.95rem;
        }

        .desktop-only {
            display: flex;
        }

        @media (max-width: 860px) {
            .desktop-nav {
                display: none;
            }
            .desktop-only {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .logo-text {
                font-size: 1.15rem;
            }
        }

        /* Main Content */
        main {
            padding-top: var(--nav-height);
        }

        /* Page Hero (Banner) */
        .page-hero {
            position: relative;
            background: linear-gradient(180deg, rgba(10, 35, 25, 0.92) 0%, rgba(10, 46, 28, 0.88) 100%), 
                        url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            padding: 60px 0 50px;
            text-align: left;
            border-bottom: 1px solid rgba(255, 215, 0, 0.12);
        }
        .page-hero .container {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 900px;
        }
        .page-hero .badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .badge-trust {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid rgba(255, 215, 0, 0.25);
            color: var(--accent-gold);
            padding: 6px 15px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.2px;
        }
        .page-hero h1 {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            letter-spacing: -0.2px;
        }
        .page-hero h1 span {
            color: var(--accent-gold);
        }
        .page-hero .sub-desc {
            font-size: 1.08rem;
            color: var(--text-muted);
            line-height: 1.65;
            max-width: 700px;
        }

        /* Section Spacing */
        .section {
            padding: 55px 0;
        }
        .section-alt {
            background: var(--bg-secondary);
        }
        .section-header {
            max-width: 800px;
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 1.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.1px;
        }
        .section-header .accent-line {
            width: 70px;
            height: 4px;
            background: var(--accent-gold);
            border-radius: 4px;
            margin: 12px 0 16px;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.6;
        }

        /* Method Cards Grid */
        .method-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 28px;
            margin-top: 20px;
        }
        .method-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .method-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent-gold) 0%, rgba(255,215,0,0.3) 100%);
            border-radius: 4px 0 0 4px;
        }
        .method-card:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-gold);
            transform: translateY(-4px);
        }
        .method-card .icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(255,215,0,0.13);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            color: var(--accent-gold);
            font-size: 1.7rem;
        }
        .method-card h3 {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .method-card p {
            color: var(--text-dim);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .method-card .rate-tag {
            display: inline-block;
            margin-top: 14px;
            background: rgba(255,215,0,0.15);
            color: var(--accent-gold);
            padding: 5px 14px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.3px;
        }

        /* Step Process */
        .steps-flow {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            counter-reset: step;
            margin-top: 15px;
        }
        .step-item {
            flex: 1 1 200px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            position: relative;
            border: 1px solid rgba(255,215,0,0.1);
            transition: all var(--transition-base);
        }
        .step-item:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-gold);
        }
        .step-item::before {
            counter-increment: step;
            content: "0" counter(step);
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-gold);
            opacity: 0.25;
            position: absolute;
            top: 15px;
            right: 18px;
            line-height: 1;
        }
        .step-item h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .step-item p {
            color: var(--text-dim);
            font-size: 0.9rem;
            line-height: 1.55;
        }

        /* Quick stat block */
        .stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            justify-content: space-between;
            margin: 30px 0 20px;
        }
        .stat-item {
            text-align: left;
            min-width: 120px;
        }
        .stat-number {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.1;
        }
        .stat-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 4px;
        }

        /* FAQ accordion style */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 860px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(255,215,0,0.12);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--accent-gold);
        }
        .faq-item h5 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 14px;
        }
        .faq-item h5 i {
            color: var(--accent-gold);
            transition: transform var(--transition-smooth);
        }
        .faq-item.open h5 i {
            transform: rotate(180deg);
        }
        .faq-body {
            display: none;
            margin-top: 12px;
            color: var(--text-dim);
            font-size: 0.95rem;
            line-height: 1.6;
            border-top: 1px solid rgba(255,215,0,0.1);
            padding-top: 14px;
        }
        .faq-item.open .faq-body {
            display: block;
        }

        /* CTA Block */
        .cta-banner {
            background: linear-gradient(135deg, #123E25 0%, #0A2E1C 100%);
            border: 1px solid var(--accent-gold);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            text-align: center;
            box-shadow: var(--shadow-gold);
            margin: 30px 0 20px;
        }
        .cta-banner h3 {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-banner p {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 24px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-large {
            display: inline-block;
            background: linear-gradient(135deg, #D32F2F, #E53935);
            color: #fff;
            padding: 14px 38px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 8px 26px rgba(211,47,47,0.4);
            transition: all var(--transition-base);
            letter-spacing: 0.3px;
        }
        .btn-cta-large:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 34px rgba(211,47,47,0.55);
        }

        /* Image block */
        .img-wrapper {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(255,215,0,0.15);
            box-shadow: var(--shadow-card);
        }
        .img-wrapper img {
            width: 100%;
            object-fit: cover;
        }

        /* Footer */
        .site-footer {
            background: #071a12;
            border-top: 1px solid rgba(255,215,0,0.2);
            padding: 45px 0 25px;
            color: var(--text-dim);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 28px;
        }
        .footer-col h4 {
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 14px;
        }
        .footer-col p {
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .footer-col a {
            display: inline-block;
            color: var(--text-dim);
            font-size: 0.9rem;
            margin-bottom: 6px;
            transition: color var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--accent-gold);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,215,0,0.15);
            padding-top: 18px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            font-size: 0.85rem;
            gap: 10px;
        }

        /* FAB */
        .fab-support {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(145deg, #1C3B2A, #0D2819);
            border: 2px solid var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255,215,0,0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.4rem;
            cursor: pointer;
            opacity: 0.7;
            animation: floatFab 2.8s ease-in-out infinite;
            transition: all var(--transition-base);
        }
        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(255,215,0,0.5);
        }
        .fab-support:active {
            transform: scale(0.95);
        }
        @keyframes floatFab {
            0%,100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }

        @media (max-width: 768px) {
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .method-grid {
                grid-template-columns: 1fr;
            }
            .cta-banner {
                padding: 32px 20px;
            }
            .cta-banner h3 {
                font-size: 1.4rem;
            }
            .stats-row {
                gap: 18px;
            }
            .stat-number {
                font-size: 1.7rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-deep: #0F0C20;
            --bg-card: rgba(255,255,255,0.03);
            --bg-section: rgba(255,255,255,0.01);
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --accent-pink: #FF007F;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-dim: #7D8285;
            --border-neon: #00F0FF;
            --border-card: rgba(0,240,255,0.18);
            --border-light: rgba(255,255,255,0.08);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-neon: 0 0 18px rgba(0,240,255,0.25);
            --shadow-lift: 0 14px 30px rgba(0,0,0,0.5);
            --spacing-section: 80px;
            --container-max: 1260px;
            --font-heading: 'Segoe UI', 'Inter', system-ui, sans-serif;
            --font-body: 'Segoe UI', 'Inter', system-ui, sans-serif;
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-body);
            background-color: var(--bg-deep);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; }

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

        .site-header {
            position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
            background: rgba(15,12,32,0.82); backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
        }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            padding: 14px 24px; max-width: var(--container-max); margin: 0 auto;
        }
        .logo-text {
            font-weight: 700; font-size: 1.5rem; letter-spacing: -0.3px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .desktop-nav { display: flex; gap: 32px; align-items: center; }
        .desktop-nav a {
            font-weight: 500; font-size: 0.95rem; color: var(--text-silver);
            padding: 6px 0; border-bottom: 2px solid transparent; transition: all 0.2s;
        }
        .desktop-nav a.active { color: var(--accent-cyan); border-bottom-color: var(--accent-cyan); }
        .desktop-nav a:hover { color: var(--accent-lime); }
        .auth-buttons { display: flex; gap: 12px; align-items: center; }
        .btn-login {
            background: transparent; border: 1px solid var(--accent-cyan); color: var(--accent-cyan);
            padding: 10px 22px; border-radius: 30px; font-weight: 600; cursor: pointer;
            transition: all 0.25s; font-size: 0.9rem;
        }
        .btn-login:hover { background: rgba(0,240,255,0.1); box-shadow: 0 0 12px rgba(0,240,255,0.3); }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            color: #0F0C20; padding: 10px 24px; border-radius: 30px; font-weight: 700;
            border: none; cursor: pointer; transition: all 0.25s; font-size: 0.9rem;
        }
        .btn-signup:hover { box-shadow: 0 0 20px rgba(0,240,255,0.5); transform: translateY(-2px); }
        .mobile-menu-toggle { display: none; background: transparent; border: none; color: white; font-size: 1.8rem; cursor: pointer; }
        .mobile-menu { display: none; flex-direction: column; background: rgba(15,12,32,0.96); backdrop-filter: blur(20px); padding: 24px; gap: 18px; }
        .mobile-menu a { font-weight: 500; color: var(--text-silver); font-size: 1.05rem; }
        .mobile-menu a.active { color: var(--accent-cyan); }
        .mobile-menu .auth-buttons { flex-direction: column; gap: 10px; margin-top: 8px; }

        @media (max-width: 1024px) {
            .desktop-nav, .desktop-only { display: none; }
            .mobile-menu-toggle { display: block; }
            .mobile-menu.active { display: flex; }
        }

        .site-footer {
            background: rgba(10,8,24,0.9); border-top: 1px solid var(--border-light);
            padding: 60px 0 30px; margin-top: 80px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 50px; }
        .footer-col h4 { font-weight: 700; margin-bottom: 16px; color: var(--accent-cyan); font-size: 1.1rem; }
        .footer-col p { color: var(--text-silver); font-size: 0.9rem; line-height: 1.65; }
        .footer-col a { color: var(--text-silver); font-size: 0.9rem; display: inline-block; margin-bottom: 6px; transition: color 0.2s; }
        .footer-col a:hover { color: var(--accent-lime); }
        .footer-bottom { border-top: 1px solid var(--border-light); margin-top: 40px; padding-top: 20px; display: flex; justify-content: space-between; flex-wrap: wrap; font-size: 0.85rem; color: var(--text-dim); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .footer-bottom { flex-direction: column; gap: 10px; }
        }

        .page-hero {
            padding: 150px 0 70px; text-align: left;
            background: radial-gradient(circle at 20% 30%, rgba(0,240,255,0.08), transparent 60%);
        }
        .hero-content { display: flex; gap: 60px; align-items: center; flex-wrap: wrap; }
        .hero-text { flex: 1 1 500px; }
        .hero-badge {
            display: inline-block; background: rgba(0,240,255,0.12); color: var(--accent-cyan);
            padding: 6px 16px; border-radius: 30px; font-weight: 600; font-size: 0.8rem;
            letter-spacing: 1px; border: 1px solid rgba(0,240,255,0.25);
        }
        .hero-text h1 { font-size: 2.8rem; font-weight: 800; margin: 20px 0; line-height: 1.2; }
        .hero-text p { font-size: 1.15rem; color: var(--text-silver); margin-bottom: 28px; }
        .hero-stats { display: flex; gap: 30px; flex-wrap: wrap; }
        .hero-stat { font-size: 1.0rem; color: var(--text-silver); }
        .hero-stat strong { color: var(--accent-lime); font-size: 1.4rem; display: block; }
        .hero-visual {
            flex: 1 1 380px; background: rgba(255,255,255,0.02);
            border-radius: var(--radius-lg); padding: 24px; border: 1px solid var(--border-card);
            box-shadow: var(--shadow-neon);
        }
        @media (max-width: 768px) {
            .hero-text h1 { font-size: 2.1rem; }
            .hero-content { gap: 30px; }
            .page-hero { padding: 120px 0 40px; }
        }

        .section { padding: var(--spacing-section) 0; }
        .section-header { margin-bottom: 48px; }
        .section-header h2 { font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
        .section-header p { color: var(--text-silver); max-width: 700px; }

        .security-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 30px; }
        .security-card {
            background: var(--bg-card); border: 1px solid var(--border-card);
            border-radius: var(--radius-md); padding: 30px; transition: all 0.25s;
        }
        .security-card:hover { border-color: var(--accent-cyan); box-shadow: var(--shadow-neon); transform: translateY(-4px); }
        .security-icon { font-size: 2.1rem; color: var(--accent-cyan); margin-bottom: 18px; }
        .security-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
        .security-card p { color: var(--text-silver); font-size: 0.95rem; }

        .protocol-timeline { display: flex; flex-direction: column; gap: 30px; }
        .protocol-item {
            display: flex; gap: 20px; background: var(--bg-section);
            border-radius: var(--radius-md); padding: 24px; border: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .protocol-num {
            width: 44px; height: 44px; border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            display: flex; align-items: center; justify-content: center; font-weight: 800;
            color: #0F0C20; flex-shrink: 0; font-size: 1.1rem;
        }
        .protocol-item h4 { margin-bottom: 6px; }
        .protocol-item p { color: var(--text-silver); font-size: 0.92rem; }

        .faq-list { display: flex; flex-direction: column; gap: 14px; }
        .faq-item { background: var(--bg-card); border-radius: var(--radius-sm); border: 1px solid var(--border-light); }
        .faq-question {
            padding: 18px 22px; font-weight: 600; cursor: pointer; display: flex;
            justify-content: space-between; align-items: center;
        }
        .faq-answer { padding: 0 22px 18px; color: var(--text-silver); display: none; }
        .faq-item.active .faq-answer { display: block; }
        .faq-item.active .faq-question { color: var(--accent-cyan); }

        .cta-block {
            background: linear-gradient(135deg, rgba(0,240,255,0.08), rgba(204,255,0,0.04));
            border-radius: var(--radius-lg); padding: 50px 40px; text-align: center;
            border: 1px solid var(--border-card);
        }
        .btn-primary-lg {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            color: #0F0C20; padding: 14px 38px; border-radius: 40px; font-weight: 800;
            font-size: 1.05rem; border: none; cursor: pointer; transition: all 0.25s;
            display: inline-block; margin-top: 20px;
        }
        .btn-primary-lg:hover { box-shadow: 0 0 24px rgba(0,240,255,0.6); transform: translateY(-3px); }

        .fab-left {
            position: fixed; left: 20px; bottom: 28px; z-index: 90;
            background: rgba(0,0,0,0.6); backdrop-filter: blur(14px);
            border-radius: 60px; border: 2px solid transparent;
            background-clip: padding-box;
            width: 52px; height: 52px; display: flex; align-items: center; justify-content: center;
            cursor: pointer; transition: all 0.3s;
            box-shadow: 0 0 15px rgba(0,240,255,0.5);
        }
        .fab-left::before {
            content: ''; position: absolute; inset: -3px; border-radius: 60px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-pink));
            z-index: -1;
        }
        .fab-left i { color: white; font-size: 1.5rem; }
        .fab-left:hover { transform: scale(1.08); box-shadow: 0 0 25px rgba(0,240,255,0.8); }

/* roulang page: category2 */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: #0B3C25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --accent-dark-gold: #B8860B;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: #9AB5A7;
            --border-gold: #FFD700;
            --shadow-gold: rgba(255, 215, 0, 0.3);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --transition: all 0.3s ease;
            --section-padding: 80px 0;
            --font-heading: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
        }

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

        body {
            font-family: var(--font-body);
            background: var(--bg-primary);
            color: var(--text-mint);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--accent-gold);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #FFED4A;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: 30px;
            padding: 12px 28px;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.35s ease;
            text-decoration: none;
            border: 2px solid transparent;
            line-height: 1.4;
        }
        .btn-gold {
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-dark-gold));
            color: #0A2E1C;
            border-color: var(--accent-gold);
            box-shadow: 0 6px 20px var(--shadow-gold);
        }
        .btn-gold:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(255, 215, 0, 0.5);
            color: #0A2E1C;
        }
        .btn-outline-gold {
            background: transparent;
            color: var(--accent-gold);
            border-color: var(--accent-gold);
        }
        .btn-outline-gold:hover {
            background: var(--accent-gold);
            color: #0A2E1C;
            transform: translateY(-2px);
        }
        .btn-red {
            background: var(--accent-red);
            color: white;
            border-color: var(--accent-red);
            box-shadow: 0 6px 18px rgba(211, 47, 47, 0.35);
        }
        .btn-red:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(211, 47, 47, 0.5);
            color: white;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.25);
            padding: 12px 0;
            transition: var(--transition);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .logo-text {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--accent-gold);
            text-decoration: none;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo-text:hover {
            color: #FFED4A;
        }
        .desktop-nav {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        .desktop-nav a {
            color: var(--text-mint);
            font-weight: 500;
            text-decoration: none;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
            font-size: 0.95rem;
        }
        .desktop-nav a.active,
        .desktop-nav a:hover {
            color: var(--accent-gold);
            border-bottom-color: var(--accent-gold);
        }
        .auth-buttons {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-gold);
            color: var(--accent-gold);
            padding: 8px 20px;
            border-radius: 20px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .btn-login:hover {
            background: rgba(255,215,0,0.12);
        }
        .btn-signup {
            background: var(--accent-red);
            border: none;
            color: white;
            padding: 8px 22px;
            border-radius: 20px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
            box-shadow: 0 4px 12px rgba(211, 47, 47, 0.4);
        }
        .btn-signup:hover {
            background: #E53935;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(211, 47, 47, 0.55);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-gold);
            font-size: 1.6rem;
            cursor: pointer;
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 14px;
            padding: 20px 0;
            border-top: 1px solid rgba(255,215,0,0.2);
            margin-top: 12px;
            width: 100%;
        }
        .mobile-menu a {
            color: var(--text-mint);
            font-weight: 500;
            text-decoration: none;
            font-size: 1rem;
        }
        .mobile-menu a.active,
        .mobile-menu a:hover {
            color: var(--accent-gold);
        }
        .mobile-menu .auth-buttons {
            flex-wrap: wrap;
            gap: 10px;
        }

        @media (max-width: 992px) {
            .desktop-nav,
            .desktop-only {
                display: none !important;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .mobile-menu.show {
                display: flex;
            }
            .header-inner {
                flex-wrap: wrap;
            }
        }

        /* Section Titles */
        .section-header {
            margin-bottom: 48px;
        }
        .section-label {
            display: inline-block;
            background: rgba(255,215,0,0.12);
            color: var(--accent-gold);
            padding: 6px 18px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 2.2rem;
            color: var(--text-white);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 700px;
        }

        /* Hero */
        .page-hero {
            background: linear-gradient(135deg, #0A2E1C 0%, #0B3C25 60%, #123E25 100%);
            padding: 70px 0 60px;
            position: relative;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: -50px;
            right: -80px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(255,215,0,0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .hero-content h1 {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 2.8rem;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 18px;
        }
        .hero-content h1 span {
            color: var(--accent-gold);
        }
        .hero-content .hero-lead {
            font-size: 1.15rem;
            color: var(--text-mint);
            margin-bottom: 30px;
            line-height: 1.6;
        }
        .hero-visual {
            background: rgba(0,0,0,0.25);
            border-radius: var(--radius-lg);
            padding: 20px;
            border: 1px solid rgba(255,215,0,0.3);
            box-shadow: var(--shadow-card);
        }
        .hero-visual img {
            border-radius: var(--radius-md);
            width: 100%;
        }

        @media (max-width: 768px) {
            .page-hero .hero-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .page-hero {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        /* Method Cards */
        .method-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 28px;
        }
        .method-card {
            background: var(--bg-card);
            border: 1px solid rgba(255,215,0,0.25);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .method-card:hover {
            border-color: var(--accent-gold);
            box-shadow: 0 12px 32px var(--shadow-gold);
            transform: translateY(-4px);
        }
        .method-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, rgba(255,215,0,0.2), rgba(255,215,0,0.05));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--accent-gold);
            margin-bottom: 20px;
        }
        .method-card h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-white);
            margin-bottom: 10px;
        }
        .method-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 18px;
        }
        .method-meta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 0.8rem;
            color: var(--text-mint);
            font-weight: 500;
        }
        .method-meta span {
            background: rgba(255,215,0,0.1);
            padding: 4px 12px;
            border-radius: 20px;
        }

        /* FAQ */
        .faq-section {
            background: var(--bg-secondary);
            padding: var(--section-padding);
            border-top: 1px solid rgba(255,215,0,0.15);
            border-bottom: 1px solid rgba(255,215,0,0.15);
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            max-width: 900px;
        }
        .faq-item {
            background: rgba(0,0,0,0.25);
            border: 1px solid rgba(255,215,0,0.18);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent-gold);
        }
        .faq-item h4 {
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 10px;
            font-size: 1.05rem;
        }
        .faq-item p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin: 0;
        }

        @media (max-width: 768px) {
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .method-grid {
                grid-template-columns: 1fr;
            }
        }

        /* CTA */
        .cta-block {
            background: linear-gradient(135deg, #0A2E1C, #123E25);
            border: 2px solid var(--accent-gold);
            border-radius: var(--radius-lg);
            padding: 48px 32px;
            text-align: center;
            max-width: 800px;
            margin: 60px auto;
        }
        .cta-block h3 {
            font-family: var(--font-heading);
            font-size: 2rem;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        .cta-block p {
            color: var(--text-mint);
            margin-bottom: 28px;
        }

        .badge-18 {
            display: inline-flex;
            align-items: center;
            background: var(--accent-red);
            color: white;
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.85rem;
            gap: 6px;
        }

        /* Footer */
        .site-footer {
            background: #072218;
            padding: 60px 0 30px;
            border-top: 2px solid rgba(255,215,0,0.3);
            color: var(--text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            color: var(--accent-gold);
            font-weight: 700;
            margin-bottom: 16px;
            font-family: var(--font-heading);
        }
        .footer-col p, .footer-col a {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,215,0,0.15);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
            }
        }

        .section-spacing {
            padding: var(--section-padding);
        }
        .section-spacing-top {
            padding-top: 80px;
        }
        .section-spacing-bottom {
            padding-bottom: 80px;
        }