/* roulang page: index */
:root {
            --bg-primary: #0B3C25;
            --bg-secondary: #062315;
            --bg-card: #0E452C;
            --accent-gold: #FFCC00;
            --accent-lime: #32CD32;
            --accent-red: #D32F2F;
            --text-primary: #FFFDF0;
            --text-secondary: #C5E2D2;
            --text-muted: #8FBFA9;
            --border-gold: #FFD700;
            --border-soft: rgba(255, 204, 0, 0.25);
            --shadow-gold: 0 8px 32px rgba(255, 204, 0, 0.15);
            --shadow-dark: 0 8px 24px rgba(0, 0, 0, 0.35);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
        }

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

        body {
            font-family: var(--font-body);
            background: linear-gradient(180deg, #062315 0%, #0B3C25 35%, #062315 100%);
            color: var(--text-primary);
            line-height: 1.65;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--accent-gold);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover { color: #FFE066; text-decoration: none; }
        a:focus-visible { outline: 3px solid var(--accent-lime); outline-offset: 3px; }

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

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

        /* ========== NAVBAR ========== */
        .navbar-gvg {
            background: rgba(6, 35, 21, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-soft);
            padding: 14px 0;
            transition: var(--transition);
        }
        .navbar-gvg.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
            padding: 10px 0;
        }
        .navbar-brand-gvg {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .navbar-brand-gvg:hover { color: #FFE066; }
        .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, #FFCC00, #32CD32);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #062315;
            font-weight: 900;
            flex-shrink: 0;
        }
        .navbar-nav-gvg { gap: 8px; }
        .navbar-nav-gvg .nav-link {
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 10px 18px;
            border-radius: 50px;
            transition: var(--transition);
            position: relative;
        }
        .navbar-nav-gvg .nav-link:hover {
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.08);
        }
        .navbar-nav-gvg .nav-link.active {
            color: #062315;
            background: var(--accent-gold);
            font-weight: 700;
        }
        .navbar-toggler-gvg {
            border: 1px solid var(--border-soft);
            padding: 8px 12px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
        }
        .navbar-toggler-gvg i { color: var(--accent-gold); font-size: 1.2rem; }

        /* ========== HERO ========== */
        .hero-gvg {
            position: relative;
            padding: 80px 0 100px;
            background-image: linear-gradient(135deg, rgba(6,35,21,0.85) 0%, rgba(11,60,37,0.75) 50%, rgba(6,35,21,0.9) 100%), url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            min-height: 85vh;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-gvg::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(180deg, transparent 0%, #062315 100%);
            pointer-events: none;
        }
        .hero-content { position: relative; z-index: 2; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 204, 0, 0.12);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 10px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.05em;
            margin-bottom: 24px;
        }
        .hero-badge i { color: var(--accent-lime); }
        .hero-title-gvg {
            font-size: clamp(2.4rem, 5vw, 4.2rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.03em;
            color: #FFFFFF;
            margin-bottom: 24px;
        }
        .hero-title-gvg .highlight {
            background: linear-gradient(135deg, #FFCC00, #32CD32);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc-gvg {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 650px;
            margin-bottom: 36px;
            line-height: 1.7;
        }
        .hero-cta-group { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 40px; }
        .btn-gvg {
            padding: 16px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: var(--transition);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-gvg-gold {
            background: linear-gradient(135deg, #FFCC00, #FFB300);
            color: #062315;
            box-shadow: 0 8px 24px rgba(255, 204, 0, 0.35);
        }
        .btn-gvg-gold:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(255, 204, 0, 0.5);
            color: #062315;
        }
        .btn-gvg-outline {
            background: transparent;
            border: 2px solid var(--accent-gold);
            color: var(--accent-gold);
        }
        .btn-gvg-outline:hover {
            background: rgba(255, 204, 0, 0.12);
            transform: translateY(-3px);
            color: var(--accent-gold);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat-value {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--accent-gold);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Hero Coupon Wall */
        .coupon-wall {
            position: relative;
            z-index: 2;
            background: rgba(14, 69, 44, 0.9);
            backdrop-filter: blur(20px);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-gold);
        }
        .coupon-main {
            background: linear-gradient(135deg, #FFCC00 0%, #FFE066 50%, #FFCC00 100%);
            border-radius: var(--radius-md);
            padding: 30px;
            text-align: center;
            color: #062315;
            position: relative;
            overflow: hidden;
        }
        .coupon-main::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
            animation: shimmer 4s infinite;
        }
        @keyframes shimmer {
            0% { transform: translate(-30%, -30%); }
            50% { transform: translate(30%, 30%); }
            100% { transform: translate(-30%, -30%); }
        }
        .coupon-main h3 {
            font-size: 2rem;
            font-weight: 900;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }
        .coupon-main p {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0;
            position: relative;
            z-index: 1;
        }
        .coupon-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 16px;
            margin-top: 24px;
        }
        .coupon-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-sm);
            padding: 18px;
            text-align: center;
            transition: var(--transition);
            cursor: pointer;
        }
        .coupon-item:hover {
            background: rgba(255, 204, 0, 0.1);
            border-color: var(--accent-gold);
            transform: translateY(-4px);
        }
        .coupon-item i {
            font-size: 1.6rem;
            color: var(--accent-gold);
            margin-bottom: 10px;
        }
        .coupon-item h5 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-primary);
        }
        .coupon-item span {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ========== COUNTDOWN ========== */
        .countdown-section {
            padding: 50px 0;
            background: linear-gradient(135deg, #062315 0%, #0B3C25 100%);
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }
        .countdown-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
            align-items: center;
        }
        .countdown-item {
            text-align: center;
            min-width: 100px;
        }
        .countdown-number {
            font-size: 3rem;
            font-weight: 900;
            color: var(--accent-gold);
            line-height: 1;
            font-variant-numeric: tabular-nums;
        }
        .countdown-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-top: 8px;
        }

        /* ========== SECTIONS ========== */
        .section-gvg {
            padding: 70px 0;
        }
        .section-gvg-dark {
            background: rgba(6, 35, 21, 0.6);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-lime);
            margin-bottom: 16px;
        }
        .section-title {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 900;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            color: #FFFFFF;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 720px;
            margin-bottom: 40px;
            line-height: 1.7;
        }

        /* ========== HIGHLIGHT WALL ========== */
        .highlight-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .highlight-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 32px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .highlight-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, #FFCC00, #32CD32);
            opacity: 0;
            transition: var(--transition);
        }
        .highlight-card:hover {
            border-color: var(--accent-gold);
            transform: translateY(-6px);
            box-shadow: var(--shadow-gold);
        }
        .highlight-card:hover::before { opacity: 1; }
        .highlight-icon {
            width: 56px;
            height: 56px;
            background: rgba(255, 204, 0, 0.1);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-gold);
            margin-bottom: 20px;
        }
        .highlight-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #FFFFFF;
        }
        .highlight-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.65;
        }

        /* ========== COMPARISON TABLE ========== */
        .comparison-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-soft);
        }
        .comparison-table thead {
            background: rgba(255, 204, 0, 0.08);
        }
        .comparison-table th {
            padding: 18px 24px;
            font-weight: 700;
            color: var(--accent-gold);
            font-size: 0.95rem;
            text-align: left;
            border-bottom: 1px solid var(--border-soft);
        }
        .comparison-table td {
            padding: 18px 24px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .comparison-table tbody tr:hover {
            background: rgba(255, 204, 0, 0.05);
        }
        .comparison-table tbody tr:last-child td {
            border-bottom: none;
        }
        .badge-check {
            background: rgba(50, 205, 50, 0.15);
            color: var(--accent-lime);
            padding: 4px 12px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.8rem;
        }
        .badge-warn {
            background: rgba(211, 47, 47, 0.15);
            color: #FF6B6B;
            padding: 4px 12px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.8rem;
        }

        /* ========== NEWS LIST ========== */
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 360px;
            gap: 32px;
        }
        .news-main-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-list-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            transition: var(--transition);
        }
        .news-list-item:hover {
            border-color: var(--accent-gold);
            transform: translateX(6px);
        }
        .news-list-item .news-index {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--accent-gold);
            min-width: 50px;
            text-align: center;
        }
        .news-list-item .news-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: #FFFFFF;
        }
        .news-list-item .news-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .news-sidebar {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 28px;
        }
        .news-sidebar h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 20px;
        }
        .news-sidebar-item {
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .news-sidebar-item:last-child { border-bottom: none; }
        .news-sidebar-item i {
            color: var(--accent-lime);
            font-size: 0.9rem;
        }
        .news-sidebar-item span {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, #FFCC00 0%, #FFB300 100%);
            border-radius: var(--radius-lg);
            margin: 0 0 70px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 100%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 70%);
            animation: shimmer 5s infinite;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 40px;
        }
        .cta-content h2 {
            font-size: 2rem;
            font-weight: 900;
            color: #062315;
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 1.1rem;
            color: rgba(6, 35, 21, 0.8);
            margin-bottom: 28px;
            font-weight: 500;
        }
        .btn-gvg-dark {
            background: #062315;
            color: var(--accent-gold);
            box-shadow: 0 8px 24px rgba(6, 35, 21, 0.4);
        }
        .btn-gvg-dark:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(6, 35, 21, 0.5);
            color: #FFE066;
        }

        /* ========== FAQ ========== */
        .accordion-gvg .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .accordion-gvg .accordion-button {
            background: transparent;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 1rem;
            padding: 20px 24px;
            box-shadow: none;
        }
        .accordion-gvg .accordion-button:not(.collapsed) {
            background: rgba(255, 204, 0, 0.08);
            color: var(--accent-gold);
        }
        .accordion-gvg .accordion-button:focus {
            box-shadow: none;
            border-color: var(--accent-gold);
        }
        .accordion-gvg .accordion-button::after {
            filter: brightness(0) invert(1);
        }
        .accordion-gvg .accordion-body {
            padding: 20px 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ========== FOOTER ========== */
        .footer-gvg {
            background: #051A10;
            border-top: 1px solid var(--border-soft);
            padding: 50px 0 30px;
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--accent-gold);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 400px;
        }
        .footer-links h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links ul li {
            margin-bottom: 10px;
        }
        .footer-links ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-links ul li a:hover {
            color: var(--accent-gold);
            padding-left: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 32px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ========== FAB ========== */
        .fab-gvg {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 1050;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, #FFCC00, #FFB300);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #062315;
            font-size: 1.4rem;
            box-shadow: 0 8px 24px rgba(255, 204, 0, 0.4);
            cursor: pointer;
            transition: var(--transition);
            opacity: 0.75;
            animation: floatFAB 3s ease-in-out infinite;
        }
        .fab-gvg:hover {
            opacity: 1;
            transform: scale(1.15);
            box-shadow: 0 12px 36px rgba(255, 204, 0, 0.6);
        }
        @keyframes floatFAB {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        .fab-gvg .notification-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            background: #FF0000;
            border-radius: 50%;
            border: 2px solid #062315;
            animation: blinkDot 1.5s ease-in-out infinite;
        }
        @keyframes blinkDot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .news-layout { grid-template-columns: 1fr; }
            .hero-gvg { padding: 60px 0 80px; }
            .coupon-wall { padding: 28px; }
        }
        @media (max-width: 768px) {
            .container { padding-left: 16px; padding-right: 16px; }
            .hero-gvg { min-height: auto; padding: 50px 0 70px; background-attachment: scroll; }
            .hero-title-gvg { font-size: 2rem; }
            .hero-desc-gvg { font-size: 1rem; }
            .hero-cta-group { gap: 12px; }
            .btn-gvg { padding: 14px 24px; font-size: 0.9rem; }
            .coupon-wall { padding: 20px; }
            .coupon-main h3 { font-size: 1.4rem; }
            .section-gvg { padding: 50px 0; }
            .section-title { font-size: 1.6rem; }
            .news-list-item { flex-direction: column; align-items: flex-start; gap: 12px; }
            .news-list-item .news-index { min-width: auto; }
            .countdown-number { font-size: 2.2rem; }
            .comparison-table th, .comparison-table td { padding: 12px 16px; font-size: 0.8rem; }
            .fab-gvg { left: 16px; bottom: 80px; width: 48px; height: 48px; font-size: 1.2rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .navbar-brand-gvg { font-size: 1rem; }
            .brand-icon { width: 36px; height: 36px; font-size: 1rem; }
            .hero-title-gvg { font-size: 1.6rem; }
            .hero-stats { gap: 20px; }
            .hero-stat-value { font-size: 1.4rem; }
            .coupon-list { grid-template-columns: 1fr; }
            .countdown-grid { gap: 12px; }
            .countdown-item { min-width: 70px; }
            .countdown-number { font-size: 1.8rem; }
            .highlight-grid { grid-template-columns: 1fr; }
            .cta-content h2 { font-size: 1.5rem; }
            .cta-content { padding: 24px; }
        }

/* roulang page: article */
:root {
            --gvg-bg: #0F0C20;
            --gvg-bg-secondary: #0B1A30;
            --gvg-surface: #141024;
            --gvg-surface-light: #1C1835;
            --gvg-primary: #CCFF00;
            --gvg-accent: #00F0FF;
            --gvg-text: #FFFFFF;
            --gvg-text-muted: #A6ACAF;
            --gvg-border: rgba(0, 240, 255, 0.25);
            --gvg-border-hover: rgba(0, 240, 255, 0.7);
            --gvg-gradient: linear-gradient(135deg, #CCFF00 0%, #00F0FF 100%);
            --gvg-radius: 16px;
            --gvg-radius-sm: 10px;
            --gvg-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            --gvg-shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --gvg-font: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
            --gvg-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
        }

        body {
            font-family: var(--gvg-font);
            background-color: var(--gvg-bg);
            color: var(--gvg-text);
            line-height: 1.65;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover,
        a:focus {
            color: var(--gvg-primary);
            text-decoration: none;
        }

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

        .container {
            max-width: 1200px;
        }

        /* ========== NAVBAR ========== */
        .navbar-gvg {
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--gvg-border);
            padding: 14px 0;
            transition: all var(--gvg-transition);
        }

        .navbar-gvg.scrolled {
            padding: 8px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }

        .navbar-brand-gvg {
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--gvg-text) !important;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--gvg-gradient);
            color: #0F0C20;
            font-size: 1.1rem;
            flex-shrink: 0;
            box-shadow: var(--gvg-shadow-neon);
        }

        .navbar-toggler-gvg {
            border: 1px solid var(--gvg-border);
            color: var(--gvg-text);
            background: transparent;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            transition: all var(--gvg-transition);
        }

        .navbar-toggler-gvg:hover,
        .navbar-toggler-gvg:focus {
            border-color: var(--gvg-accent);
            color: var(--gvg-accent);
            box-shadow: var(--gvg-shadow-neon);
        }

        .navbar-nav-gvg .nav-link {
            color: var(--gvg-text-muted) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 16px;
            border-radius: 8px;
            transition: all var(--gvg-transition);
            position: relative;
        }

        .navbar-nav-gvg .nav-link:hover,
        .navbar-nav-gvg .nav-link:focus {
            color: var(--gvg-text) !important;
            background: rgba(0, 240, 255, 0.08);
        }

        .navbar-nav-gvg .nav-link.active {
            color: var(--gvg-primary) !important;
            background: rgba(204, 255, 0, 0.1);
        }

        .navbar-nav-gvg .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--gvg-gradient);
            border-radius: 2px;
        }

        /* ========== ARTICLE HERO ========== */
        .article-hero {
            position: relative;
            padding: 80px 0 50px;
            background:
                radial-gradient(ellipse at 20% 30%, rgba(0, 240, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 70%, rgba(204, 255, 0, 0.05) 0%, transparent 60%),
                var(--gvg-bg);
            border-bottom: 1px solid var(--gvg-border);
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }

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

        .article-breadcrumb {
            font-size: 0.85rem;
            color: var(--gvg-text-muted);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

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

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

        .article-breadcrumb .separator {
            color: var(--gvg-border);
        }

        .article-hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            color: var(--gvg-text);
            max-width: 900px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--gvg-text-muted);
            margin-top: 20px;
        }

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

        .article-meta i {
            color: var(--gvg-accent);
        }

        .category-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.12);
            color: var(--gvg-accent);
            border: 1px solid var(--gvg-border);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            transition: all var(--gvg-transition);
        }

        .category-badge:hover {
            background: rgba(0, 240, 255, 0.2);
            color: var(--gvg-accent);
            border-color: var(--gvg-border-hover);
        }

        /* ========== ARTICLE BODY ========== */
        .article-main {
            padding: 50px 0 70px;
            background: var(--gvg-bg);
        }

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

        .article-content h2 {
            font-size: 1.7rem;
            font-weight: 700;
            margin-top: 40px;
            margin-bottom: 18px;
            color: var(--gvg-text);
            letter-spacing: -0.01em;
            line-height: 1.3;
            position: relative;
            padding-left: 18px;
        }

        .article-content h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            background: var(--gvg-gradient);
            border-radius: 4px;
        }

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

        .article-content h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-top: 30px;
            margin-bottom: 15px;
            color: var(--gvg-text);
        }

        .article-content p {
            margin-bottom: 18px;
            color: var(--gvg-text-muted);
            line-height: 1.7;
            font-size: 1rem;
        }

        .article-content ul,
        .article-content ol {
            margin-bottom: 20px;
            padding-left: 24px;
            color: var(--gvg-text-muted);
        }

        .article-content li {
            margin-bottom: 10px;
            line-height: 1.6;
        }

        .article-content strong {
            color: var(--gvg-text);
            font-weight: 700;
        }

        .article-content blockquote {
            background: rgba(0, 240, 255, 0.06);
            border-left: 4px solid var(--gvg-accent);
            padding: 20px 24px;
            border-radius: 0 var(--gvg-radius-sm) var(--gvg-radius-sm) 0;
            margin: 25px 0;
            color: var(--gvg-text);
            font-style: italic;
        }

        .article-content img {
            border-radius: var(--gvg-radius-sm);
            margin: 25px 0;
            box-shadow: var(--gvg-shadow);
        }

        .article-content a {
            color: var(--gvg-accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content a:hover {
            color: var(--gvg-primary);
        }

        /* ========== ARTICLE NOT FOUND ========== */
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }

        .article-not-found i {
            font-size: 4rem;
            color: var(--gvg-text-muted);
            margin-bottom: 20px;
            display: block;
        }

        .article-not-found h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .article-not-found p {
            color: var(--gvg-text-muted);
            margin-bottom: 25px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 60px 0;
            background:
                radial-gradient(ellipse at 50% 50%, rgba(0, 240, 255, 0.08) 0%, transparent 70%),
                var(--gvg-bg-secondary);
            border-top: 1px solid var(--gvg-border);
            border-bottom: 1px solid var(--gvg-border);
        }

        .cta-box {
            background: var(--gvg-surface);
            border: 1px solid var(--gvg-border);
            border-radius: var(--gvg-radius);
            padding: 45px;
            text-align: center;
            box-shadow: var(--gvg-shadow);
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.1) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-box h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 15px;
            position: relative;
        }

        .cta-box p {
            color: var(--gvg-text-muted);
            max-width: 600px;
            margin: 0 auto 25px;
            position: relative;
        }

        /* ========== BUTTONS ========== */
        .btn-gvg-primary {
            background: var(--gvg-gradient);
            color: #0F0C20;
            font-weight: 700;
            padding: 12px 30px;
            border-radius: 50px;
            border: none;
            transition: all var(--gvg-transition);
            font-size: 0.95rem;
            letter-spacing: 0.01em;
        }

        .btn-gvg-primary:hover,
        .btn-gvg-primary:focus {
            color: #0F0C20;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(204, 255, 0, 0.35);
        }

        .btn-gvg-outline {
            background: transparent;
            color: var(--gvg-accent);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 50px;
            border: 2px solid var(--gvg-accent);
            transition: all var(--gvg-transition);
            font-size: 0.95rem;
        }

        .btn-gvg-outline:hover,
        .btn-gvg-outline:focus {
            background: rgba(0, 240, 255, 0.1);
            color: var(--gvg-accent);
            border-color: var(--gvg-primary);
            box-shadow: var(--gvg-shadow-neon);
        }

        /* ========== FAB ========== */
        .fab-gvg {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1050;
            width: 56px;
            height: 56px;
            border-radius: 18px;
            background: rgba(15, 12, 32, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(15, 12, 32, 0.7), rgba(15, 12, 32, 0.7)), var(--gvg-gradient);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gvg-accent);
            font-size: 1.3rem;
            opacity: 0.6;
            transition: all var(--gvg-transition);
            box-shadow: var(--gvg-shadow-neon);
            cursor: pointer;
            text-decoration: none;
        }

        .fab-gvg:hover,
        .fab-gvg:focus {
            opacity: 1;
            transform: scale(1.1);
            color: var(--gvg-primary);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.7);
        }

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

        /* ========== FOOTER ========== */
        .footer-gvg {
            background: var(--gvg-bg);
            border-top: 1px solid var(--gvg-border);
            padding: 60px 0 0;
            color: var(--gvg-text-muted);
        }

        .footer-brand {
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--gvg-text);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
        }

        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--gvg-text-muted);
            max-width: 400px;
        }

        .footer-links h5 {
            color: var(--gvg-text);
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: var(--gvg-text-muted);
            font-size: 0.9rem;
            transition: all var(--gvg-transition);
        }

        .footer-links a:hover {
            color: var(--gvg-accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--gvg-border);
            margin-top: 50px;
            padding: 25px 0;
            text-align: center;
        }

        .footer-bottom p {
            margin-bottom: 5px;
            font-size: 0.85rem;
            color: var(--gvg-text-muted);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .article-content {
                padding: 30px;
            }
        }

        @media (max-width: 768px) {
            .article-hero {
                padding: 60px 0 40px;
            }

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

            .article-content {
                padding: 24px 18px;
            }

            .article-content h2 {
                font-size: 1.4rem;
            }

            .article-content h3 {
                font-size: 1.15rem;
            }

            .cta-box {
                padding: 30px 20px;
            }

            .cta-box h2 {
                font-size: 1.4rem;
            }

            .navbar-gvg {
                padding: 10px 0;
            }

            .navbar-nav-gvg {
                padding: 15px 0;
                gap: 5px;
            }

            .navbar-nav-gvg .nav-link {
                padding: 10px 16px;
            }

            .navbar-nav-gvg .nav-link.active::after {
                display: none;
            }

            .fab-gvg {
                width: 50px;
                height: 50px;
                font-size: 1.1rem;
                bottom: 80px;
                left: 12px;
                border-radius: 14px;
            }

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

        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.5rem;
            }

            .article-content {
                padding: 20px 15px;
                border-radius: var(--gvg-radius-sm);
            }

            .article-content h2 {
                font-size: 1.25rem;
                padding-left: 14px;
            }

            .article-content p,
            .article-content li {
                font-size: 0.95rem;
            }

            .cta-box {
                padding: 25px 15px;
            }

            .btn-gvg-primary,
            .btn-gvg-outline {
                padding: 10px 20px;
                font-size: 0.85rem;
            }

            .footer-gvg {
                padding: 40px 0 0;
            }

            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #121212;
            --secondary-bg: #1C1C1E;
            --card-bg: #1E1E20;
            --bronze-gold: #C5A059;
            --amber-gold: #FFBF00;
            --warm-white: #F5F5F7;
            --muted-gold: #D4AC0D;
            --text-secondary: #A6ACAF;
            --text-muted: #7A7F82;
            --border-dark: #2A2A2D;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
            --shadow-md: 0 6px 20px rgba(0,0,0,0.5);
            --shadow-gold: 0 4px 20px rgba(197,160,89,0.15);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--primary-bg);
            color: var(--warm-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: var(--bronze-gold);
            text-decoration: none;
        }

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

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

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

        @media (max-width: 768px) {
            .container-gvg {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* ========== NAVBAR ========== */
        .navbar-gvg {
            background-color: rgba(18,18,18,0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-dark);
            padding: 0.9rem 0;
            transition: var(--transition);
            position: sticky;
            top: 0;
            z-index: 1050;
        }

        .navbar-brand-gvg {
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--warm-white) !important;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            letter-spacing: -0.02em;
        }

        .navbar-brand-gvg:hover {
            color: var(--amber-gold) !important;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--bronze-gold), var(--amber-gold));
            border-radius: 8px;
            color: #121212;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .navbar-nav-gvg .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 1.1rem !important;
            border-radius: 6px;
            transition: var(--transition);
            position: relative;
        }

        .navbar-nav-gvg .nav-link:hover {
            color: var(--warm-white) !important;
            background-color: rgba(197,160,89,0.08);
        }

        .navbar-nav-gvg .nav-link.active {
            color: var(--amber-gold) !important;
            background-color: rgba(197,160,89,0.12);
            font-weight: 600;
        }

        .navbar-toggler-gvg {
            border: 1px solid var(--border-dark);
            color: var(--warm-white);
            padding: 0.4rem 0.7rem;
            font-size: 1.2rem;
            transition: var(--transition);
        }

        .navbar-toggler-gvg:hover {
            border-color: var(--amber-gold);
            color: var(--amber-gold);
        }

        .navbar-toggler-gvg:focus {
            box-shadow: 0 0 0 3px rgba(197,160,89,0.3);
            outline: none;
        }

        @media (max-width: 991.98px) {
            .navbar-nav-gvg {
                padding-top: 1rem;
                padding-bottom: 0.8rem;
                gap: 0.3rem;
            }
            .navbar-nav-gvg .nav-link {
                padding: 0.7rem 1rem !important;
            }
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            background-image: linear-gradient(135deg, rgba(18,18,18,0.92) 0%, rgba(28,28,30,0.85) 100%), url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            padding: 5rem 0 3.5rem;
            border-bottom: 1px solid var(--border-dark);
            position: relative;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--bronze-gold), var(--amber-gold), var(--bronze-gold));
        }

        .page-banner h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--warm-white);
            letter-spacing: -0.03em;
            margin-bottom: 1rem;
            line-height: 1.2;
        }

        .page-banner .breadcrumb-gvg {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }

        .page-banner .breadcrumb-gvg a {
            color: var(--muted-gold);
        }

        .page-banner .breadcrumb-gvg a:hover {
            color: var(--amber-gold);
        }

        .page-banner .banner-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 700px;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 3.5rem 0 2.5rem;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner .banner-desc {
                font-size: 1rem;
            }
        }

        /* ========== SECTION ========== */
        .section-gvg {
            padding: 4.5rem 0;
        }

        .section-gvg-alt {
            background-color: var(--secondary-bg);
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--amber-gold);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 0.8rem;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--warm-white);
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 1rem;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 800px;
            line-height: 1.65;
            margin-bottom: 2.5rem;
        }

        @media (max-width: 768px) {
            .section-gvg {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        /* ========== STEP CARDS ========== */
        .step-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: 2rem 1.8rem;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .step-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--bronze-gold), var(--amber-gold));
            opacity: 0;
            transition: var(--transition);
        }

        .step-card:hover {
            border-color: rgba(197,160,89,0.4);
            box-shadow: var(--shadow-gold);
            transform: translateY(-4px);
        }

        .step-card:hover::before {
            opacity: 1;
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--bronze-gold), var(--amber-gold));
            color: #121212;
            font-weight: 800;
            font-size: 1.2rem;
            border-radius: 50%;
            margin-bottom: 1.2rem;
        }

        .step-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--warm-white);
            margin-bottom: 0.8rem;
            letter-spacing: -0.01em;
        }

        .step-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== FEATURE LIST ========== */
        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--border-dark);
        }

        .feature-item:last-child {
            border-bottom: none;
        }

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            background-color: rgba(197,160,89,0.12);
            border: 1px solid rgba(197,160,89,0.25);
            border-radius: 10px;
            color: var(--amber-gold);
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .feature-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--warm-white);
            margin-bottom: 0.3rem;
        }

        .feature-item p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.55;
            margin-bottom: 0;
        }

        /* ========== IMAGE PANEL ========== */
        .image-panel-gvg {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-dark);
            box-shadow: var(--shadow-md);
        }

        .image-panel-gvg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }

        .image-panel-gvg .image-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(18,18,18,0.9));
            padding: 2rem 1.5rem 1.5rem;
        }

        .image-panel-gvg .image-overlay h3 {
            color: var(--warm-white);
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 0.3rem;
        }

        .image-panel-gvg .image-overlay p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* ========== TIP CARD ========== */
        .tip-card {
            background-color: var(--card-bg);
            border: 1px solid rgba(197,160,89,0.3);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            height: 100%;
            transition: var(--transition);
        }

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

        .tip-card .tip-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(197,160,89,0.15);
            border-radius: 50%;
            color: var(--amber-gold);
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }

        .tip-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--warm-white);
            margin-bottom: 0.6rem;
        }

        .tip-card p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.55;
            margin-bottom: 0;
        }

        /* ========== FAQ ========== */
        .accordion-gvg .accordion-item {
            background-color: var(--card-bg);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 0.8rem;
            overflow: hidden;
        }

        .accordion-gvg .accordion-button {
            background-color: var(--card-bg);
            color: var(--warm-white);
            font-weight: 600;
            font-size: 1rem;
            padding: 1.2rem 1.5rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .accordion-gvg .accordion-button:not(.collapsed) {
            background-color: rgba(197,160,89,0.08);
            color: var(--amber-gold);
            box-shadow: none;
        }

        .accordion-gvg .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(197,160,89,0.2);
            outline: none;
        }

        .accordion-gvg .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23C5A059'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }

        .accordion-gvg .accordion-body {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.65;
            padding: 1rem 1.5rem 1.5rem;
        }

        /* ========== CTA ========== */
        .cta-gvg {
            background: linear-gradient(135deg, var(--secondary-bg), #1a1a1c);
            border: 1px solid rgba(197,160,89,0.3);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-gvg::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(197,160,89,0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-gvg h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--warm-white);
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
            position: relative;
            z-index: 1;
        }

        .cta-gvg p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 2rem;
            position: relative;
            z-index: 1;
        }

        /* ========== BUTTONS ========== */
        .btn-gvg-gold {
            display: inline-block;
            background: linear-gradient(135deg, var(--bronze-gold), var(--amber-gold));
            color: #121212;
            font-weight: 700;
            font-size: 1rem;
            padding: 0.85rem 2.2rem;
            border-radius: 8px;
            border: none;
            transition: var(--transition);
            letter-spacing: 0.01em;
        }

        .btn-gvg-gold:hover {
            background: linear-gradient(135deg, var(--amber-gold), var(--bronze-gold));
            color: #121212;
            box-shadow: 0 6px 25px rgba(197,160,89,0.35);
            transform: translateY(-2px);
        }

        .btn-gvg-outline {
            display: inline-block;
            background: transparent;
            color: var(--amber-gold);
            font-weight: 600;
            font-size: 1rem;
            padding: 0.85rem 2rem;
            border-radius: 8px;
            border: 1.5px solid var(--amber-gold);
            transition: var(--transition);
        }

        .btn-gvg-outline:hover {
            background: rgba(197,160,89,0.1);
            color: var(--warm-white);
            border-color: var(--warm-white);
            transform: translateY(-2px);
        }

        /* ========== FOOTER ========== */
        .footer-gvg {
            background-color: #0D0D0D;
            border-top: 1px solid var(--border-dark);
            padding: 3.5rem 0 1.5rem;
            margin-top: 2rem;
        }

        .footer-brand {
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--warm-white);
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 1rem;
        }

        .footer-desc {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.6;
            max-width: 400px;
        }

        .footer-links h5 {
            color: var(--amber-gold);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
            letter-spacing: 0.02em;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links ul li {
            margin-bottom: 0.7rem;
        }

        .footer-links ul li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-links ul li a:hover {
            color: var(--amber-gold);
            padding-left: 5px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-dark);
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            text-align: center;
        }

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-bottom: 0.3rem;
        }

        /* ========== FAB ========== */
        .fab-gvg {
            position: fixed;
            left: 1.2rem;
            bottom: 5.5rem;
            z-index: 1060;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            background: rgba(28,28,30,0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid var(--bronze-gold);
            border-radius: 50%;
            color: var(--amber-gold);
            font-size: 1.4rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(197,160,89,0.25);
            opacity: 0.75;
            text-decoration: none;
        }

        .fab-gvg:hover {
            opacity: 1;
            transform: scale(1.08);
            box-shadow: 0 8px 30px rgba(197,160,89,0.4);
            color: var(--warm-white);
            border-color: var(--amber-gold);
        }

        .fab-gvg:active {
            transform: scale(0.94);
        }

        @media (max-width: 768px) {
            .fab-gvg {
                width: 50px;
                height: 50px;
                font-size: 1.2rem;
                left: 1rem;
                bottom: 5rem;
            }
        }

        /* ========== RESPONSIVE HELPERS ========== */
        @media (max-width: 576px) {
            .step-card {
                padding: 1.5rem;
            }
            .cta-gvg {
                padding: 2rem 1.5rem;
            }
            .cta-gvg h2 {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary-bg: #0B0B0B;
            --secondary-bg: #161616;
            --surface: #1E1E1E;
            --surface-2: #252525;
            --lava-orange: #FF4500;
            --fire-red: #FF0000;
            --gold-accent: #FFB347;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #9A9A9A;
            --border-color: #333333;
            --border-glow: rgba(255, 69, 0, 0.5);
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.5);
            --shadow-hover: 0 12px 32px rgba(255, 69, 0, 0.25);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.25s ease;
            --font-body: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.65;
            font-size: 1rem;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--lava-orange);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #ff6b35;
        }
        a:focus-visible, button:focus-visible {
            outline: 2px solid var(--lava-orange);
            outline-offset: 2px;
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        /* Navbar */
        .navbar-gvg {
            background-color: rgba(11, 11, 11, 0.97);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: var(--transition);
        }
        .navbar-gvg.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
        }
        .navbar-brand-gvg {
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--text-primary) !important;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.5px;
        }
        .navbar-brand-gvg .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--lava-orange), var(--fire-red));
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 0 12px rgba(255, 69, 0, 0.5);
        }
        .navbar-toggler-gvg {
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            font-size: 1.3rem;
            padding: 6px 12px;
        }
        .navbar-toggler-gvg:focus {
            box-shadow: 0 0 0 3px rgba(255, 69, 0, 0.3);
        }
        .navbar-nav-gvg .nav-item {
            margin: 0 4px;
        }
        .navbar-nav-gvg .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 16px;
            border-radius: 20px;
            transition: var(--transition);
            position: relative;
        }
        .navbar-nav-gvg .nav-link:hover {
            color: var(--text-primary) !important;
            background: rgba(255, 69, 0, 0.12);
        }
        .navbar-nav-gvg .nav-link.active {
            color: var(--lava-orange) !important;
            background: rgba(255, 69, 0, 0.15);
        }
        .navbar-nav-gvg .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--lava-orange);
            border-radius: 2px;
        }
        .btn-gvg-nav {
            background: linear-gradient(135deg, var(--lava-orange), var(--fire-red));
            color: #fff !important;
            font-weight: 700;
            padding: 8px 18px;
            border-radius: 22px;
            font-size: 0.9rem;
            border: none;
            transition: var(--transition);
        }
        .btn-gvg-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(255, 69, 0, 0.4);
            color: #fff !important;
        }
        /* Hero */
        .hero-gvg {
            background: linear-gradient(180deg, #0B0B0B 0%, #161616 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
        .hero-gvg::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 69, 0, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -1px;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .hero-title .highlight {
            color: var(--lava-orange);
            border-bottom: 3px solid var(--lava-orange);
            padding-bottom: 2px;
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 30px;
            max-width: 600px;
            line-height: 1.7;
        }
        .hero-stats-panel {
            background: var(--surface);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .hero-stats-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--lava-orange), var(--fire-red));
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }
        .stat-item {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .stat-item:last-child {
            border-bottom: none;
        }
        .stat-icon {
            width: 44px;
            height: 44px;
            background: rgba(255, 69, 0, 0.15);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--lava-orange);
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .stat-info h4 {
            font-size: 1rem;
            margin-bottom: 2px;
        }
        .stat-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }
        /* Section common */
        .section-gvg {
            padding: 70px 0;
        }
        .section-gvg-alt {
            background: var(--secondary-bg);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 15px;
        }
        .section-lead {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 700px;
            line-height: 1.7;
            margin-bottom: 40px;
        }
        /* Cards */
        .card-gvg {
            background: var(--surface);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            height: 100%;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .card-gvg:hover {
            transform: translateY(-5px);
            border-color: rgba(255, 69, 0, 0.5);
            box-shadow: var(--shadow-hover);
        }
        .card-gvg .card-icon {
            width: 56px;
            height: 56px;
            background: rgba(255, 69, 0, 0.12);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--lava-orange);
            font-size: 1.5rem;
            margin-bottom: 18px;
        }
        .card-gvg h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
        }
        .card-gvg p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin: 0;
            line-height: 1.6;
        }
        /* Process steps */
        .step-item {
            display: flex;
            gap: 20px;
            margin-bottom: 30px;
        }
        .step-number {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--lava-orange), var(--fire-red));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 16px rgba(255, 69, 0, 0.4);
        }
        .step-content h4 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .step-content p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin: 0;
        }
        /* FAQ */
        .accordion-gvg .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md) !important;
            margin-bottom: 15px;
            overflow: hidden;
        }
        .accordion-gvg .accordion-button {
            background: var(--surface);
            color: var(--text-primary);
            font-weight: 600;
            padding: 18px 22px;
            font-size: 1rem;
            border: none;
            box-shadow: none;
            transition: var(--transition);
        }
        .accordion-gvg .accordion-button:not(.collapsed) {
            background: rgba(255, 69, 0, 0.08);
            color: var(--lava-orange);
        }
        .accordion-gvg .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--lava-orange);
            outline-offset: -2px;
        }
        .accordion-gvg .accordion-body {
            background: var(--surface-2);
            color: var(--text-secondary);
            padding: 18px 22px;
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .accordion-gvg .accordion-button::after {
            filter: invert(0.7);
        }
        /* CTA */
        .cta-gvg {
            background: linear-gradient(135deg, #1E0B36 0%, #0B1A30 100%);
            border: 1px solid rgba(255, 69, 0, 0.3);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            text-align: left;
        }
        .cta-gvg h2 {
            font-size: 1.8rem;
            margin-bottom: 15px;
        }
        .cta-gvg p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 25px;
            max-width: 600px;
        }
        .btn-gvg {
            background: linear-gradient(135deg, var(--lava-orange), var(--fire-red));
            color: #fff;
            font-weight: 700;
            padding: 14px 30px;
            border-radius: 25px;
            border: none;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-gvg:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(255, 69, 0, 0.4);
            color: #fff;
        }
        .btn-gvg-outline {
            background: transparent;
            border: 2px solid var(--lava-orange);
            color: var(--lava-orange);
            font-weight: 700;
            padding: 12px 28px;
            border-radius: 25px;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-gvg-outline:hover {
            background: var(--lava-orange);
            color: #fff;
            box-shadow: 0 6px 18px rgba(255, 69, 0, 0.3);
        }
        /* Table */
        .table-gvg {
            background: var(--surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        .table-gvg table {
            width: 100%;
            border-collapse: collapse;
            margin: 0;
        }
        .table-gvg th {
            background: rgba(255, 69, 0, 0.1);
            color: var(--lava-orange);
            font-weight: 700;
            padding: 15px 18px;
            text-align: left;
            font-size: 0.9rem;
            border-bottom: 2px solid var(--lava-orange);
        }
        .table-gvg td {
            padding: 14px 18px;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
        }
        .table-gvg tr:last-child td {
            border-bottom: none;
        }
        /* Badge */
        .badge-gvg {
            display: inline-block;
            background: rgba(255, 69, 0, 0.15);
            color: var(--lava-orange);
            padding: 5px 14px;
            border-radius: 15px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 15px;
            letter-spacing: 0.5px;
        }
        /* FAB */
        .fab-gvg {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 1060;
            width: 56px;
            height: 56px;
            background: rgba(11, 11, 11, 0.85);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, var(--lava-orange), var(--fire-red)) 1;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--lava-orange);
            font-size: 1.4rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 18px rgba(255, 69, 0, 0.45);
            animation: fabPulse 2.5s infinite;
        }
        .fab-gvg:hover {
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(255, 69, 0, 0.7);
            color: #fff;
        }
        @keyframes fabPulse {
            0%, 100% { box-shadow: 0 0 18px rgba(255, 69, 0, 0.45); }
            50% { box-shadow: 0 0 30px rgba(255, 69, 0, 0.75); }
        }
        /* Footer */
        .footer-gvg {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
            margin-top: 60px;
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 15px;
        }
        .footer-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--lava-orange), var(--fire-red));
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .footer-links h5 {
            font-size: 1rem;
            margin-bottom: 18px;
            color: var(--text-primary);
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links ul li {
            margin-bottom: 10px;
        }
        .footer-links ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-links ul li a:hover {
            color: var(--lava-orange);
            padding-left: 5px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            margin-top: 40px;
            padding-top: 25px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-title { font-size: 2.3rem; }
            .section-title { font-size: 1.7rem; }
        }
        @media (max-width: 768px) {
            .hero-gvg { padding: 50px 0 40px; }
            .hero-title { font-size: 1.9rem; }
            .hero-subtitle { font-size: 1rem; }
            .section-gvg { padding: 50px 0; }
            .section-title { font-size: 1.5rem; }
            .cta-gvg { padding: 30px 25px; }
            .navbar-brand-gvg { font-size: 1.05rem; }
            .fab-gvg { left: 15px; bottom: 80px; width: 50px; height: 50px; font-size: 1.2rem; }
        }
        @media (max-width: 520px) {
            .hero-title { font-size: 1.6rem; }
            .hero-stats-panel { padding: 18px; }
            .card-gvg { padding: 20px; }
            .step-item { flex-direction: column; gap: 12px; }
            .step-number { width: 40px; height: 40px; font-size: 1rem; }
            .cta-gvg h2 { font-size: 1.4rem; }
            .btn-gvg, .btn-gvg-outline { padding: 10px 22px; font-size: 0.9rem; }
            .table-gvg th, .table-gvg td { padding: 10px 12px; font-size: 0.8rem; }
        }