/* roulang page: index */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --bg-card: #141124;
            --bg-elevated: #1A1835;
            --accent-primary: #CCFF00;
            --accent-secondary: #00F0FF;
            --accent-glow: rgba(0, 240, 255, 0.5);
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-color: rgba(204, 255, 0, 0.2);
            --border-cyan: rgba(0, 240, 255, 0.3);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.3), 0 0 40px rgba(204, 255, 0, 0.15);
            --shadow-cyan: 0 0 15px rgba(0, 240, 255, 0.5);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --container-padding: 24px;
            --header-height: 72px;
            --nav-height-mobile: 64px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-primary);
            background-image: radial-gradient(circle at 20% 20%, rgba(0, 240, 255, 0.03) 0%, transparent 50%),
                              radial-gradient(circle at 80% 80%, rgba(204, 255, 0, 0.03) 0%, transparent 50%);
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid var(--accent-secondary);
            outline-offset: 2px;
        }

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

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

        .section-header {
            margin-bottom: var(--spacing-lg);
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.02em;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.7;
        }

        .tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            background: rgba(204, 255, 0, 0.1);
            color: var(--accent-primary);
            border: 1px solid rgba(204, 255, 0, 0.3);
            margin-bottom: var(--spacing-sm);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 700;
            letter-spacing: 0.01em;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
            text-align: center;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-primary) 0%, #A8D600 100%);
            color: #0F0C20;
            box-shadow: 0 4px 16px rgba(204, 255, 0, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(204, 255, 0, 0.45);
            color: #0F0C20;
        }

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

        .btn-secondary {
            background: transparent;
            color: var(--accent-secondary);
            border: 2px solid var(--accent-secondary);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
        }

        .btn-secondary:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transform: translateY(-2px);
        }

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

        .btn-outline-light {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-primary);
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(10px);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.5);
            color: var(--text-primary);
            transform: translateY(-2px);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 12, 32, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(15, 12, 32, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            text-decoration: none;
            white-space: nowrap;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #0F0C20;
            font-weight: 900;
            flex-shrink: 0;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .logo-text .brand-name {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }

        .logo-text .brand-sub {
            font-size: 0.65rem;
            color: var(--text-secondary);
            font-weight: 500;
            letter-spacing: 0.08em;
            text-transform: uppercase;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            list-style: none;
        }

        .main-nav li {
            position: relative;
        }

        .main-nav a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            text-decoration: none;
        }

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

        .main-nav a.active {
            color: var(--accent-primary);
            background: rgba(204, 255, 0, 0.1);
            box-shadow: 0 0 12px rgba(204, 255, 0, 0.2);
        }

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

        .btn-login {
            padding: 10px 20px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 50px;
            transition: all var(--transition-fast);
        }

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.4);
        }

        .btn-signup {
            padding: 10px 24px;
            font-size: 0.9rem;
            font-weight: 700;
            color: #0F0C20;
            background: linear-gradient(135deg, var(--accent-primary) 0%, #A8D600 100%);
            border-radius: 50px;
            box-shadow: 0 2px 12px rgba(204, 255, 0, 0.35);
            transition: all var(--transition-base);
        }

        .btn-signup:hover {
            box-shadow: 0 6px 20px rgba(204, 255, 0, 0.5);
            transform: translateY(-1px);
        }

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

        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-primary);
            font-size: 1.25rem;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 12, 32, 0.98);
            backdrop-filter: blur(20px);
            z-index: 999;
            padding: var(--spacing-md);
            overflow-y: auto;
        }

        .mobile-menu.open {
            display: flex;
            flex-direction: column;
        }

        .mobile-menu ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .mobile-menu a {
            display: block;
            padding: 14px 20px;
            border-radius: var(--radius-md);
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .mobile-menu a.active {
            color: var(--accent-primary);
            background: rgba(204, 255, 0, 0.1);
        }

        /* ========== HERO SECTION ========== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: calc(var(--header-height) + var(--spacing-xl)) 0 var(--spacing-xl);
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            isolation: isolate;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 12, 32, 0.92) 0%, rgba(11, 26, 48, 0.85) 50%, rgba(15, 12, 32, 0.92) 100%);
            z-index: -1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 30% 50%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 70% 60%, rgba(204, 255, 0, 0.06) 0%, transparent 50%);
            z-index: -1;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            width: 100%;
        }

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

        .hero-content .tag {
            margin-bottom: var(--spacing-md);
        }

        .hero-content h1 {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.03em;
            color: var(--text-primary);
            margin-bottom: var(--spacing-md);
        }

        .hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-content .hero-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            margin-bottom: var(--spacing-lg);
        }

        .hero-stats {
            display: flex;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
        }

        .hero-stat .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-primary);
            letter-spacing: -0.02em;
        }

        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-coupon-wall {
            position: relative;
            width: 100%;
            max-width: 480px;
            background: rgba(20, 17, 36, 0.7);
            backdrop-filter: blur(20px);
            border-radius: var(--radius-xl);
            border: 1px solid rgba(0, 240, 255, 0.3);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-neon);
        }

        .hero-coupon-wall::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary), transparent);
            z-index: -1;
            opacity: 0.3;
        }

        .coupon-main {
            background: linear-gradient(135deg, rgba(204, 255, 0, 0.15) 0%, rgba(0, 240, 255, 0.15) 100%);
            border: 2px dashed var(--accent-primary);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            text-align: center;
            margin-bottom: var(--spacing-md);
            position: relative;
        }

        .coupon-main .coupon-label {
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--accent-secondary);
            margin-bottom: var(--spacing-xs);
        }

        .coupon-main .coupon-value {
            font-size: 3rem;
            font-weight: 900;
            color: var(--accent-primary);
            letter-spacing: -0.03em;
            line-height: 1.2;
        }

        .coupon-main .coupon-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: var(--spacing-xs);
        }

        .coupon-main .btn {
            margin-top: var(--spacing-md);
            width: 100%;
        }

        .coupon-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-sm);
        }

        .coupon-mini {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: var(--spacing-sm);
            text-align: center;
            transition: all var(--transition-base);
        }

        .coupon-mini:hover {
            border-color: var(--accent-secondary);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.25);
            transform: translateY(-2px);
        }

        .coupon-mini .mini-value {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--accent-secondary);
        }

        .coupon-mini .mini-label {
            font-size: 0.7rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* ========== PROGRESS / TARGET SECTION ========== */
        .progress-section {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .progress-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

        .progress-content h2 {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-md);
        }

        .progress-content p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
        }

        .progress-bar-wrapper {
            margin-bottom: var(--spacing-lg);
        }

        .progress-bar-label {
            display: flex;
            justify-content: space-between;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: var(--spacing-xs);
            color: var(--text-secondary);
        }

        .progress-bar-label .progress-percent {
            color: var(--accent-primary);
            font-weight: 700;
        }

        .progress-bar-bg {
            width: 100%;
            height: 12px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50px;
            overflow: hidden;
        }

        .progress-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
            border-radius: 50px;
            transition: width var(--transition-slow);
            box-shadow: 0 0 12px rgba(204, 255, 0, 0.5);
        }

        .progress-milestones {
            display: flex;
            justify-content: space-between;
            margin-top: var(--spacing-xs);
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .progress-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .progress-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        /* ========== REWARD TIERS SECTION ========== */
        .tiers-section {
            background: var(--bg-primary);
        }

        .tiers-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

        .tier-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: var(--spacing-lg);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .tier-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .tier-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-neon);
            transform: translateY(-4px);
        }

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

        .tier-card.featured {
            border-color: var(--accent-primary);
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.2);
        }

        .tier-card .tier-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-secondary);
            border: 1px solid rgba(0, 240, 255, 0.3);
            margin-bottom: var(--spacing-sm);
        }

        .tier-card.featured .tier-badge {
            background: rgba(204, 255, 0, 0.15);
            color: var(--accent-primary);
            border-color: rgba(204, 255, 0, 0.4);
        }

        .tier-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            letter-spacing: -0.01em;
        }

        .tier-card .tier-value {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-primary);
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.02em;
        }

        .tier-card .tier-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: var(--spacing-md);
        }

        .tier-card ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
            margin-bottom: var(--spacing-lg);
        }

        .tier-card ul li {
            font-size: 0.9rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .tier-card ul li i {
            color: var(--accent-primary);
            font-size: 0.85rem;
        }

        .tier-card .btn {
            width: 100%;
        }

        /* ========== SUPPORTERS / TESTIMONIALS SECTION ========== */
        .supporters-section {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .supporters-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

        .supporter-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition-base);
        }

        .supporter-card:hover {
            border-color: var(--border-cyan);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .supporter-card .supporter-quote {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
            font-style: italic;
        }

        .supporter-card .supporter-info {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .supporter-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            color: #0F0C20;
            flex-shrink: 0;
        }

        .supporter-name {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .supporter-title {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .supporter-rating {
            margin-left: auto;
            color: var(--accent-primary);
            font-size: 0.85rem;
        }

        /* ========== INSIGHTS SECTION ========== */
        .insights-section {
            background: var(--bg-primary);
        }

        .insights-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

        .insight-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border-left: 4px solid var(--accent-secondary);
            padding: var(--spacing-lg);
            transition: all var(--transition-base);
        }

        .insight-card:hover {
            border-left-color: var(--accent-primary);
            box-shadow: var(--shadow-md);
        }

        .insight-card .insight-label {
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-secondary);
            margin-bottom: var(--spacing-xs);
        }

        .insight-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
        }

        .insight-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ========== NEWS / CMS SECTION ========== */
        .news-section {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: var(--spacing-lg);
            margin-top: var(--spacing-lg);
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            padding: var(--spacing-md);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .news-item:hover {
            border-color: var(--border-cyan);
            background: var(--bg-elevated);
            transform: translateX(4px);
        }

        .news-item .news-date {
            flex-shrink: 0;
            width: 60px;
            text-align: center;
            padding: var(--spacing-xs);
            background: rgba(0, 240, 255, 0.08);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .news-item .news-date .day {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--accent-secondary);
            line-height: 1.2;
        }

        .news-item .news-date .month {
            font-size: 0.7rem;
            color: var(--text-secondary);
            text-transform: uppercase;
        }

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

        .news-item .news-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .news-item:hover .news-title {
            color: var(--accent-primary);
        }

        .news-item .news-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: var(--spacing-sm);
        }

        .news-sidebar {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .news-sidebar h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-md);
            color: var(--text-primary);
        }

        .news-sidebar ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .news-sidebar ul li a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-secondary);
            padding: var(--spacing-xs) 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition-fast);
        }

        .news-sidebar ul li a:hover {
            color: var(--accent-secondary);
            padding-left: var(--spacing-xs);
        }

        .news-sidebar .sidebar-promo {
            margin-top: var(--spacing-lg);
            background: linear-gradient(135deg, rgba(204, 255, 0, 0.1), rgba(0, 240, 255, 0.1));
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
        }

        .news-sidebar .sidebar-promo .promo-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-primary);
        }

        .news-sidebar .sidebar-promo .promo-label {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* ========== SUPPORT BUTTON / CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, rgba(204, 255, 0, 0.05) 0%, rgba(0, 240, 255, 0.05) 100%);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: var(--spacing-xl) 0;
        }

        .cta-content {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-sm);
        }

        .cta-content p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
        }

        .cta-content .btn {
            font-size: 1.1rem;
            padding: 16px 40px;
        }

        /* ========== FAQ SECTION ========== */
        .faq-section {
            background: var(--bg-primary);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
            margin-top: var(--spacing-lg);
            max-width: 800px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.06);
            overflow: hidden;
            transition: all var(--transition-base);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-md) var(--spacing-lg);
            cursor: pointer;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            transition: all var(--transition-fast);
            gap: var(--spacing-sm);
            user-select: none;
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--accent-secondary);
            transition: all var(--transition-base);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: rgba(204, 255, 0, 0.15);
            color: var(--accent-primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow);
            padding: 0 var(--spacing-lg);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: var(--spacing-md);
        }

        .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== PLATFORM GUARANTEE SECTION ========== */
        .guarantee-section {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

        .guarantee-item {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            padding: var(--spacing-md);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition-base);
        }

        .guarantee-item:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-md);
        }

        .guarantee-item .guarantee-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(204, 255, 0, 0.15), rgba(0, 240, 255, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--accent-primary);
            flex-shrink: 0;
        }

        .guarantee-item h3 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .guarantee-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ========== LEAD FORM SECTION ========== */
        .lead-form-section {
            background: var(--bg-primary);
        }

        .lead-form-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            margin-top: var(--spacing-lg);
        }

        .lead-form-content h2 {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-sm);
        }

        .lead-form-content p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .lead-form {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .lead-form .form-group {
            margin-bottom: var(--spacing-md);
        }

        .lead-form label {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .lead-form input {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: all var(--transition-fast);
        }

        .lead-form input:focus {
            border-color: var(--accent-secondary);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
            outline: none;
        }

        .lead-form input::placeholder {
            color: var(--text-muted);
        }

        .lead-form .privacy-note {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: var(--spacing-sm);
            text-align: center;
        }

        .lead-form .btn {
            width: 100%;
            margin-top: var(--spacing-sm);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0A0816;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
        }

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

        .footer-brand .logo {
            margin-bottom: var(--spacing-sm);
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            max-width: 320px;
        }

        .footer-column h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
        }

        .footer-column ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

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

        .footer-column ul a:hover {
            color: var(--accent-primary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: var(--spacing-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-bottom .legal-links {
            display: flex;
            gap: var(--spacing-md);
        }

        .footer-bottom .legal-links a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-bottom .legal-links a:hover {
            color: var(--text-secondary);
        }

        .footer-badges {
            display: flex;
            gap: var(--spacing-xs);
            align-items: center;
            margin-top: var(--spacing-sm);
        }

        .footer-badge {
            padding: 6px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ========== FAB ========== */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 100;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-secondary);
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-cyan);
            opacity: 0.6;
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary), transparent);
            z-index: -1;
            opacity: 0.6;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
        }

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

        .fab .fab-notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #FF007F;
            border: 2px solid #0F0C20;
            animation: fabBlink 1.5s ease-in-out infinite;
        }

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

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

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --container-padding: 20px;
                --spacing-xl: 48px;
                --spacing-xxl: 72px;
            }

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

            .hero-content h1 {
                font-size: 2.5rem;
            }

            .hero-visual {
                max-width: 520px;
                margin: 0 auto;
            }

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

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

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

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
                --spacing-xl: 40px;
                --spacing-lg: 32px;
                --spacing-md: 20px;
                --container-padding: 16px;
            }

            .main-nav {
                display: none;
            }

            .mobile-toggle {
                display: flex;
            }

            .nav-actions .btn-login {
                display: none;
            }

            .nav-actions .btn-signup {
                display: none;
            }

            .mobile-menu .mobile-actions {
                display: flex;
                gap: var(--spacing-xs);
                margin-top: var(--spacing-md);
            }

            .mobile-menu .mobile-actions .btn {
                flex: 1;
                text-align: center;
            }

            .hero-section {
                min-height: auto;
                padding-top: calc(var(--header-height) + var(--spacing-lg));
                padding-bottom: var(--spacing-lg);
            }

            .hero-content h1 {
                font-size: 2rem;
            }

            .hero-content .hero-desc {
                font-size: 1rem;
            }

            .hero-stats {
                gap: var(--spacing-md);
            }

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

            .coupon-list {
                grid-template-columns: repeat(3, 1fr);
                gap: var(--spacing-xs);
            }

            .coupon-main .coupon-value {
                font-size: 2.2rem;
            }

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

            .tiers-grid,
            .supporters-grid,
            .guarantee-grid,
            .insights-grid {
                grid-template-columns: 1fr;
            }

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

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

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

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

            .fab {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }

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

        @media (max-width: 520px) {
            :root {
                --spacing-xl: 32px;
                --spacing-lg: 24px;
                --spacing-md: 16px;
                --spacing-sm: 12px;
                --container-padding: 12px;
            }

            .logo-text .brand-name {
                font-size: 0.9rem;
            }

            .logo-text .brand-sub {
                font-size: 0.55rem;
            }

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

            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .coupon-list {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 6px;
            }

            .coupon-mini {
                padding: 8px;
            }

            .coupon-mini .mini-value {
                font-size: 0.9rem;
            }

            .coupon-mini .mini-label {
                font-size: 0.6rem;
            }

            .tier-card,
            .supporter-card,
            .insight-card,
            .guarantee-item,
            .lead-form {
                padding: var(--spacing-md);
            }

            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-xs);
            }

            .news-item .news-date {
                width: 100%;
                display: flex;
                align-items: center;
                gap: var(--spacing-xs);
                justify-content: center;
            }

            .cta-content h2 {
                font-size: 1.5rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --bg-card: #151230;
            --bg-card-hover: #1A1640;
            --accent-primary: #CCFF00;
            --accent-secondary: #00F0FF;
            --accent-tertiary: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-color: rgba(204, 255, 0, 0.2);
            --border-neon: rgba(0, 240, 255, 0.35);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 40px rgba(204, 255, 0, 0.25);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 96px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --container-padding: 24px;
        }

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

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

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

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

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            color: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(204, 255, 0, 0.15);
            padding: 16px 0;
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            color: var(--text-primary);
        }

        .logo:hover {
            color: var(--accent-primary);
        }

        .logo-icon {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 22px;
            flex-shrink: 0;
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.3);
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
        }

        .logo:hover .logo-icon {
            transform: rotate(-5deg) scale(1.05);
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.5);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-name {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .brand-sub {
            font-size: 12px;
            color: var(--text-secondary);
            font-weight: 500;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }

        .main-nav li a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .main-nav li a i {
            font-size: 14px;
            opacity: 0.8;
        }

        .main-nav li a:hover {
            color: var(--accent-primary);
            background: rgba(204, 255, 0, 0.08);
        }

        .main-nav li a.active {
            color: var(--bg-primary);
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            box-shadow: 0 4px 16px rgba(204, 255, 0, 0.35);
        }

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

        .btn-login {
            padding: 10px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: all var(--transition-fast);
            background: transparent;
        }

        .btn-login:hover {
            border-color: var(--accent-secondary);
            color: var(--accent-secondary);
            background: rgba(0, 240, 255, 0.08);
        }

        .btn-signup {
            padding: 10px 22px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 700;
            color: var(--bg-primary);
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            box-shadow: 0 4px 16px rgba(204, 255, 0, 0.4);
            transition: all var(--transition-fast);
            position: relative;
            overflow: hidden;
        }

        .btn-signup::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transform: rotate(45deg);
            transition: all var(--transition-slow);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(204, 255, 0, 0.55);
        }

        .btn-signup:hover::before {
            left: 100%;
        }

        .btn-signup:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(204, 255, 0, 0.35);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

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

        .mobile-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .mobile-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .article-main {
            flex: 1;
            padding: var(--spacing-lg) 0 var(--spacing-xl);
        }

        .article-container {
            max-width: 860px;
            margin: 0 auto;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: var(--spacing-md);
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

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

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

        .breadcrumb .separator {
            opacity: 0.5;
            font-size: 11px;
        }

        .breadcrumb .current {
            color: var(--accent-secondary);
            font-weight: 600;
        }

        .article-header {
            margin-bottom: var(--spacing-lg);
            position: relative;
        }

        .article-header::before {
            content: '';
            position: absolute;
            top: -20px;
            left: -20px;
            width: 120px;
            height: 120px;
            background: radial-gradient(circle, rgba(204, 255, 0, 0.12), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            z-index: 0;
        }

        .article-header::after {
            content: '';
            position: absolute;
            bottom: -30px;
            right: -20px;
            width: 160px;
            height: 160px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.1), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            z-index: 0;
        }

        .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            background: rgba(204, 255, 0, 0.12);
            color: var(--accent-primary);
            border: 1px solid rgba(204, 255, 0, 0.3);
            margin-bottom: var(--spacing-sm);
            position: relative;
            z-index: 1;
        }

        .article-category-tag i {
            font-size: 11px;
        }

        .article-title {
            font-size: 38px;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: var(--spacing-sm);
            position: relative;
            z-index: 1;
            background: linear-gradient(135deg, #FFFFFF 30%, var(--accent-primary) 70%, var(--accent-secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-muted);
            position: relative;
            z-index: 1;
            padding-bottom: var(--spacing-md);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .article-meta i {
            color: var(--accent-secondary);
            font-size: 13px;
        }

        .article-cover {
            width: 100%;
            max-height: 420px;
            object-fit: cover;
            border-radius: var(--radius-lg);
            margin-bottom: var(--spacing-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            position: relative;
            z-index: 1;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-secondary);
            position: relative;
            z-index: 1;
        }

        .article-content h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--text-primary);
            margin-top: var(--spacing-lg);
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.3px;
            line-height: 1.3;
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent-primary);
            margin-top: var(--spacing-md);
            margin-bottom: var(--spacing-xs);
            line-height: 1.4;
        }

        .article-content p {
            margin-bottom: var(--spacing-sm);
        }

        .article-content ul,
        .article-content ol {
            margin-bottom: var(--spacing-sm);
            padding-left: 24px;
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: 8px;
            position: relative;
        }

        .article-content ul li::before {
            content: '◆';
            position: absolute;
            left: -20px;
            color: var(--accent-secondary);
            font-size: 10px;
            top: 6px;
        }

        .article-content ol {
            counter-reset: item;
            list-style: none;
        }

        .article-content ol li {
            counter-increment: item;
            padding-left: 8px;
        }

        .article-content ol li::before {
            content: counter(item) '.';
            position: absolute;
            left: -24px;
            color: var(--accent-primary);
            font-weight: 700;
        }

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

        .article-content a {
            color: var(--accent-secondary);
            border-bottom: 1px solid rgba(0, 240, 255, 0.3);
            transition: all var(--transition-fast);
        }

        .article-content a:hover {
            color: var(--accent-primary);
            border-bottom-color: var(--accent-primary);
        }

        .article-content blockquote {
            margin: var(--spacing-md) 0;
            padding: var(--spacing-sm) var(--spacing-md);
            border-left: 4px solid var(--accent-primary);
            background: rgba(204, 255, 0, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-primary);
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: var(--spacing-sm) 0;
            border: 1px solid var(--border-color);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: var(--spacing-sm) 0;
            font-size: 14px;
        }

        .article-content table th {
            background: rgba(204, 255, 0, 0.1);
            color: var(--accent-primary);
            font-weight: 700;
            padding: 12px 16px;
            text-align: left;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .article-content table td {
            padding: 12px 16px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-secondary);
        }

        .article-content table tr:nth-child(even) {
            background: rgba(255, 255, 255, 0.03);
        }

        .article-actions {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            margin-top: var(--spacing-lg);
            padding: var(--spacing-md);
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .share-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            transition: all var(--transition-fast);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-secondary);
            background: transparent;
        }

        .share-btn:hover {
            transform: translateY(-3px);
            color: var(--bg-primary);
            background: var(--accent-primary);
            border-color: var(--accent-primary);
            box-shadow: 0 6px 20px rgba(204, 255, 0, 0.4);
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 700;
            color: var(--bg-primary);
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            box-shadow: 0 4px 16px rgba(204, 255, 0, 0.35);
            transition: all var(--transition-fast);
        }

        .btn-back-home:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(204, 255, 0, 0.55);
            color: var(--bg-primary);
        }

        .article-not-found {
            text-align: center;
            padding: var(--spacing-xl) var(--spacing-md);
        }

        .article-not-found i {
            font-size: 64px;
            color: var(--text-muted);
            margin-bottom: var(--spacing-sm);
            opacity: 0.5;
        }

        .article-not-found h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: var(--spacing-md);
        }

        .related-articles {
            margin-top: var(--spacing-xl);
            padding-top: var(--spacing-lg);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .related-articles h3 {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-articles h3 i {
            color: var(--accent-primary);
            font-size: 20px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: var(--spacing-sm);
        }

        .related-card {
            padding: var(--spacing-md);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition-fast);
            display: block;
        }

        .related-card:hover {
            border-color: var(--accent-primary);
            background: var(--bg-card-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            color: var(--text-primary);
        }

        .related-card .related-tag {
            font-size: 11px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: var(--accent-secondary);
            margin-bottom: 8px;
        }

        .related-card h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(204, 255, 0, 0.15);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: auto;
        }

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

        .footer-brand .logo {
            margin-bottom: var(--spacing-sm);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: var(--spacing-sm);
            max-width: 360px;
        }

        .footer-badges {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            border-radius: 50px;
            font-size: 11px;
            font-weight: 600;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition-fast);
        }

        .footer-badge i {
            color: var(--accent-primary);
            font-size: 12px;
        }

        .footer-badge:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
        }

        .footer-column h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.2px;
        }

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

        .footer-column ul li a {
            font-size: 13px;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-column ul li a:hover {
            color: var(--accent-primary);
            padding-left: 4px;
        }

        .footer-bottom {
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--accent-primary);
        }

        .fab-float {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 22px;
            box-shadow: var(--shadow-neon);
            opacity: 0.6;
            transition: all var(--transition-base);
            animation: fab-breathe 3s ease-in-out infinite;
            min-width: 48px;
            min-height: 48px;
        }

        .fab-float:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.7);
            color: var(--accent-secondary);
            animation: none;
        }

        .fab-float:active {
            transform: scale(0.95);
            box-shadow: 0 0 15px rgba(255, 0, 127, 0.6);
            color: var(--accent-tertiary);
        }

        .fab-float .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: fab-blink 1.5s ease-in-out infinite;
        }

        @keyframes fab-breathe {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-5px);
            }
        }

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

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
            .article-title {
                font-size: 32px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: nowrap;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(15, 12, 32, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-bottom: 1px solid rgba(204, 255, 0, 0.15);
                flex-direction: column;
                padding: var(--spacing-sm) var(--container-padding);
                gap: 4px;
                align-items: stretch;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav li a {
                padding: 14px 16px;
                font-size: 15px;
                border-radius: var(--radius-sm);
                justify-content: flex-start;
            }
            .mobile-toggle {
                display: flex;
            }
            .header-actions {
                gap: 8px;
            }
            .btn-login,
            .btn-signup {
                padding: 9px 14px;
                font-size: 12px;
                white-space: nowrap;
            }
            .btn-login {
                padding: 9px 12px;
            }
            .btn-signup {
                padding: 9px 14px;
            }
            .brand-name {
                font-size: 14px;
                white-space: normal;
                max-width: 140px;
            }
            .brand-sub {
                font-size: 10px;
                white-space: normal;
                max-width: 140px;
            }
            .logo-icon {
                width: 40px;
                height: 40px;
                font-size: 18px;
            }
            .article-title {
                font-size: 26px;
            }
            .article-content {
                font-size: 15px;
            }
            .article-content h2 {
                font-size: 22px;
            }
            .article-content h3 {
                font-size: 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .article-actions {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-sm);
            }
        }

        @media (max-width: 520px) {
            :root {
                --container-padding: 16px;
                --spacing-lg: 28px;
                --spacing-xl: 48px;
            }
            .brand-name {
                font-size: 12px;
                max-width: 110px;
            }
            .brand-sub {
                font-size: 9px;
                max-width: 110px;
            }
            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }
            .btn-login {
                padding: 8px 10px;
                font-size: 11px;
            }
            .btn-signup {
                padding: 8px 12px;
                font-size: 11px;
            }
            .article-title {
                font-size: 22px;
                letter-spacing: -0.2px;
            }
            .article-meta {
                font-size: 11px;
                gap: 10px;
            }
            .breadcrumb {
                font-size: 11px;
                padding: 10px 12px;
            }
            .article-content {
                font-size: 14px;
                line-height: 1.6;
            }
            .article-content h2 {
                font-size: 20px;
            }
            .article-content h3 {
                font-size: 17px;
            }
            .article-content table {
                font-size: 12px;
            }
            .article-content table th,
            .article-content table td {
                padding: 8px 10px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .fab-float {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 20px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #0A2E1C;
            --bg-forest: #123E25;
            --bg-card: #0F3523;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: #A9C5B8;
            --border-gold: rgba(255, 215, 0, 0.45);
            --border-mint: rgba(209, 242, 235, 0.18);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.35);
            --shadow-gold: 0 0 22px rgba(255, 215, 0, 0.18);
            --font-main: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --transition: all 0.28s ease;
            --max-width: 1280px;
            --spacing-section: 4.5rem;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

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

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

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

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

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

        /* ========== HEADER / NAV ========== */
        .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);
            padding: 0;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px 20px;
            padding: 12px 24px;
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 46px;
            height: 46px;
            background: linear-gradient(145deg, #FFD700, #b8860b);
            color: #0A2E1C;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.45rem;
            box-shadow: 0 4px 14px rgba(255, 215, 0, 0.3);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-name {
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: 0.01em;
            color: var(--accent-gold);
        }

        .brand-sub {
            font-size: 0.78rem;
            color: var(--text-mint);
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex-wrap: wrap;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 16px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.94rem;
            color: var(--text-mint);
            transition: var(--transition);
            white-space: nowrap;
        }

        .main-nav a i {
            font-size: 0.9rem;
            color: var(--accent-gold);
        }

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

        .main-nav a.active {
            background: var(--accent-gold);
            color: #0A2E1C;
            box-shadow: 0 4px 16px rgba(255, 215, 0, 0.35);
        }

        .main-nav a.active i {
            color: #0A2E1C;
        }

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

        .btn-login {
            padding: 9px 18px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-white);
            border: 1px solid rgba(255, 215, 0, 0.5);
            background: transparent;
            transition: var(--transition);
        }

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

        .btn-signup {
            padding: 9px 22px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 0.9rem;
            background: linear-gradient(145deg, #FFD700, #e6b800);
            color: #0A2E1C;
            box-shadow: 0 6px 18px rgba(255, 215, 0, 0.3);
            transition: var(--transition);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(255, 215, 0, 0.45);
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid rgba(255, 215, 0, 0.35);
            color: var(--accent-gold);
            width: 44px;
            height: 44px;
            border-radius: 12px;
            font-size: 1.3rem;
            align-items: center;
            justify-content: center;
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            padding: 10rem 0 5rem;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            min-height: 520px;
            display: flex;
            align-items: center;
            isolation: isolate;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(10, 46, 28, 0.96) 20%, rgba(18, 62, 37, 0.7) 60%, rgba(10, 46, 28, 0.55) 100%);
            z-index: -1;
        }

        .hero-content {
            max-width: 720px;
            text-align: left;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 215, 0, 0.14);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.88rem;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }

        .hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.01em;
            margin-bottom: 20px;
            color: var(--text-white);
        }

        .hero h1 span {
            color: var(--accent-gold);
        }

        .hero-subtitle {
            font-size: 1.12rem;
            color: var(--text-mint);
            max-width: 600px;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            background: linear-gradient(145deg, #FFD700, #e6b800);
            color: #0A2E1C;
            font-weight: 800;
            font-size: 1rem;
            box-shadow: 0 10px 28px rgba(255, 215, 0, 0.35);
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 36px rgba(255, 215, 0, 0.5);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 30px;
            border-radius: 50px;
            background: transparent;
            color: var(--text-white);
            font-weight: 700;
            font-size: 1rem;
            border: 1.5px solid rgba(255, 215, 0, 0.55);
            transition: var(--transition);
        }

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

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

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

        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 850;
            line-height: 1.2;
            color: var(--text-white);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 1.06rem;
            color: var(--text-mint);
            max-width: 680px;
            line-height: 1.7;
            margin-bottom: 40px;
        }

        .section-header {
            margin-bottom: 3rem;
        }

        .accent-line {
            display: inline-block;
            width: 64px;
            height: 4px;
            background: var(--accent-gold);
            border-radius: 4px;
            margin-bottom: 18px;
        }

        /* ========== INSIGHT SUMMARY ========== */
        .insight-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

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

        .insight-text p {
            color: var(--text-mint);
            font-size: 1.05rem;
            margin-bottom: 18px;
            line-height: 1.7;
        }

        .insight-highlight {
            background: rgba(255, 215, 0, 0.08);
            border-left: 4px solid var(--accent-gold);
            padding: 20px 24px;
            border-radius: 0 14px 14px 0;
            margin: 24px 0;
            color: var(--text-white);
            font-weight: 600;
            font-size: 1.06rem;
        }

        .insight-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-gold);
            position: relative;
        }

        .insight-image img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            transition: var(--transition);
        }

        .insight-image:hover img {
            transform: scale(1.04);
        }

        /* ========== TABLE OF CONTENTS PREVIEW ========== */
        .toc-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .toc-item {
            background: var(--bg-card);
            border: 1px solid var(--border-mint);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .toc-item:hover {
            border-color: var(--accent-gold);
            transform: translateY(-4px);
            box-shadow: var(--shadow-gold);
        }

        .toc-number {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-gold);
            line-height: 1;
        }

        .toc-item h3 {
            font-size: 1.18rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .toc-item p {
            font-size: 0.93rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== KEY CHART / DATA ========== */
        .chart-panel {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-gold);
            padding: 36px 32px;
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 36px;
            align-items: center;
        }

        .chart-bars {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .bar-row {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .bar-label {
            min-width: 130px;
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-mint);
            text-align: right;
        }

        .bar-track {
            flex: 1;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 40px;
            height: 14px;
            overflow: hidden;
        }

        .bar-fill {
            height: 100%;
            border-radius: 40px;
            background: linear-gradient(90deg, #FFD700, #D32F2F);
            transition: width 0.8s ease;
        }

        .bar-value {
            min-width: 50px;
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--accent-gold);
        }

        .chart-caption {
            color: var(--text-mint);
            font-size: 1rem;
            line-height: 1.7;
        }

        .chart-caption strong {
            color: var(--accent-gold);
        }

        /* ========== DOWNLOAD FORM ========== */
        .form-card {
            background: linear-gradient(145deg, #0F3523, #123E25);
            border: 1.5px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: 44px 40px;
            box-shadow: var(--shadow-card);
            max-width: 620px;
            margin: 0 auto;
        }

        .form-card h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text-white);
        }

        .form-card p {
            color: var(--text-mint);
            margin-bottom: 28px;
            font-size: 1rem;
        }

        .form-group {
            margin-bottom: 18px;
            text-align: left;
        }

        .form-group label {
            display: block;
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-mint);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 13px 18px;
            border-radius: 12px;
            border: 1px solid rgba(255, 215, 0, 0.3);
            background: rgba(0, 0, 0, 0.3);
            color: var(--text-white);
            font-size: 1rem;
            font-family: inherit;
            transition: var(--transition);
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: 2px solid var(--accent-gold);
            border-color: var(--accent-gold);
            background: rgba(0, 0, 0, 0.45);
        }

        .form-submit {
            width: 100%;
            padding: 15px 30px;
            border-radius: 50px;
            background: linear-gradient(145deg, #FFD700, #e6b800);
            color: #0A2E1C;
            font-weight: 800;
            font-size: 1.05rem;
            box-shadow: 0 10px 28px rgba(255, 215, 0, 0.3);
            transition: var(--transition);
        }

        .form-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 34px rgba(255, 215, 0, 0.45);
        }

        /* ========== RELATED REPORTS ========== */
        .report-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .report-card {
            background: var(--bg-card);
            border: 1px solid var(--border-mint);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .report-card:hover {
            border-color: var(--accent-gold);
            transform: translateY(-5px);
            box-shadow: var(--shadow-gold);
        }

        .report-thumb {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .report-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .report-card:hover .report-thumb img {
            transform: scale(1.06);
        }

        .report-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
            text-align: left;
        }

        .report-tag {
            display: inline-block;
            background: rgba(255, 215, 0, 0.15);
            color: var(--accent-gold);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 30px;
            width: fit-content;
        }

        .report-body h3 {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.35;
        }

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

        .report-link {
            margin-top: auto;
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.92rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .report-link:hover {
            color: #fff;
        }

        /* ========== FAB ========== */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 900;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(145deg, #1a1a1a, #0d0d0d);
            border: 2px solid var(--accent-gold);
            color: var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            opacity: 0.7;
            animation: fabFloat 3.5s ease-in-out infinite;
            transition: var(--transition);
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1) rotate(360deg);
            box-shadow: 0 8px 28px rgba(255, 215, 0, 0.5);
        }

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

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

        /* ========== FOOTER ========== */
        .site-footer {
            background: #071f14;
            border-top: 1px solid rgba(255, 215, 0, 0.2);
            padding: 4rem 0 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 18px;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        .footer-column h4 {
            color: var(--accent-gold);
            font-size: 1rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .footer-column ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-column a {
            color: var(--text-muted);
            font-size: 0.92rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 215, 0, 0.15);
            padding-top: 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.88rem;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .insight-grid,
            .chart-panel {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .toc-grid,
            .report-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 3rem;
            }
            .header-inner {
                flex-wrap: nowrap;
                padding: 10px 16px;
            }
            .menu-toggle {
                display: flex;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 46, 28, 0.98);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid rgba(255, 215, 0, 0.25);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                justify-content: flex-start;
                padding: 12px 16px;
                border-radius: 12px;
            }
            .auth-buttons {
                margin-left: auto;
            }
            .btn-login,
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.82rem;
            }
            .hero {
                padding: 8rem 0 3.5rem;
                min-height: 440px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .btn-primary,
            .btn-secondary {
                justify-content: center;
            }
            .toc-grid,
            .report-grid {
                grid-template-columns: 1fr;
            }
            .chart-panel {
                padding: 24px 20px;
            }
            .form-card {
                padding: 30px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .brand-name {
                font-size: 1rem;
            }
            .brand-sub {
                font-size: 0.7rem;
            }
            .logo-icon {
                width: 38px;
                height: 38px;
                font-size: 1.1rem;
            }
            .btn-login,
            .btn-signup {
                padding: 7px 12px;
                font-size: 0.78rem;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero-subtitle {
                font-size: 0.98rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --bg-card: #151033;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #6B7280;
            --border-glow: rgba(0, 240, 255, 0.35);
            --border-soft: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 18px rgba(204, 255, 0, 0.2);
            --font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

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

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

        a:hover {
            color: var(--accent-lime);
        }

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

        button:focus, a:focus, input:focus {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-soft);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(15, 12, 32, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

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

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 1.3rem;
            box-shadow: var(--shadow-neon);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-name {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-white);
            white-space: nowrap;
        }

        .brand-sub {
            font-size: 0.72rem;
            color: var(--text-silver);
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }

        .main-nav li a {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 10px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-silver);
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }

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

        .main-nav li a.active {
            color: var(--bg-primary);
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            font-weight: 600;
            box-shadow: var(--shadow-neon);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 8px 18px;
            border-radius: 30px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: transparent;
            color: var(--text-white);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .btn-signup {
            padding: 9px 22px;
            border-radius: 30px;
            border: none;
            background: linear-gradient(135deg, var(--accent-cyan), #0088FF);
            color: var(--bg-primary);
            font-size: 0.85rem;
            font-weight: 700;
            transition: var(--transition);
            cursor: pointer;
            white-space: nowrap;
            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);
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            color: var(--bg-primary);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
        }

        /* Hero Section */
        .hero-section {
            padding: 130px 0 70px;
            background: linear-gradient(160deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, #0A1628 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(204, 255, 0, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid var(--border-glow);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin-bottom: 22px;
            letter-spacing: 0.5px;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text-white);
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-silver);
            margin-bottom: 30px;
            max-width: 520px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary-hero {
            padding: 14px 32px;
            border-radius: 40px;
            border: none;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            color: var(--bg-primary);
            font-size: 1rem;
            font-weight: 700;
            transition: var(--transition);
            cursor: pointer;
            box-shadow: var(--shadow-lime);
        }

        .btn-primary-hero:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(204, 255, 0, 0.4);
        }

        .btn-secondary-hero {
            padding: 14px 28px;
            border-radius: 40px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-secondary-hero:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), var(--shadow-neon);
            max-height: 420px;
            object-fit: cover;
            width: 100%;
        }

        /* Stats Bar */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 50px;
            padding: 25px 0;
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }

        .stat-item {
            text-align: left;
        }

        .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.2;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-silver);
            margin-top: 4px;
        }

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

        .section-header {
            margin-bottom: 40px;
            text-align: left;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--accent-lime);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-white);
            margin-bottom: 14px;
        }

        .section-desc {
            font-size: 0.95rem;
            color: var(--text-silver);
            max-width: 650px;
            line-height: 1.7;
        }

        /* Strategy Cards */
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .strategy-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 30px 25px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .strategy-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
            opacity: 0;
            transition: var(--transition);
        }

        .strategy-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-neon);
            transform: translateY(-5px);
        }

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

        .strategy-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-glow);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.4rem;
            margin-bottom: 18px;
        }

        .strategy-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-white);
        }

        .strategy-card p {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* Process / Steps */
        .steps-container {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .step-item {
            display: flex;
            gap: 22px;
            align-items: flex-start;
            padding: 0 0 30px;
            position: relative;
        }

        .step-item:not(:last-child)::after {
            content: '';
            position: absolute;
            left: 26px;
            top: 52px;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--accent-cyan), transparent);
        }

        .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), #0088FF);
            color: var(--bg-primary);
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: var(--shadow-neon);
            z-index: 2;
        }

        .step-content h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-white);
        }

        .step-content p {
            font-size: 0.92rem;
            color: var(--text-silver);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

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

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

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 600;
            padding: 20px 25px;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 15px;
            transition: var(--transition);
        }

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

        .faq-question i {
            transition: var(--transition);
            font-size: 0.9rem;
            color: var(--accent-cyan);
        }

        .faq-question.open i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 25px;
        }

        .faq-answer p {
            padding-bottom: 20px;
            font-size: 0.92rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin: 0;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        /* CTA Section */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.06) 0%, rgba(204, 255, 0, 0.04) 100%);
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }

        .cta-box {
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            text-align: center;
            box-shadow: var(--shadow-neon);
        }

        .cta-box h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-white);
        }

        .cta-box p {
            font-size: 1rem;
            color: var(--text-silver);
            max-width: 550px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

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

        /* Footer */
        .site-footer {
            background: #0A0815;
            padding: 60px 0 25px;
            border-top: 1px solid var(--border-soft);
        }

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

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-silver);
            line-height: 1.7;
            max-width: 350px;
        }

        .footer-badges {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 16px;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 6px 12px;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-silver);
        }

        .footer-column h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 18px;
        }

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

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

        .footer-column ul li a {
            font-size: 0.85rem;
            color: var(--text-silver);
            transition: var(--transition);
        }

        .footer-column ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-soft);
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .footer-bottom p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* FAB */
        .fab-float {
            position: fixed;
            left: 16px;
            bottom: 24px;
            z-index: 1055;
            width: 56px;
            height: 56px;
            border-radius: 28px;
            background: rgba(10, 8, 21, 0.75);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(10, 8, 21, 0.75), rgba(10, 8, 21, 0.75)), linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            cursor: pointer;
            opacity: 0.7;
            transition: var(--transition);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.35);
        }

        .fab-float:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.6);
            color: var(--accent-lime);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 35px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .strategy-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 62px;
            }
            .mobile-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 62px;
                left: 0;
                right: 0;
                background: rgba(15, 12, 32, 0.98);
                flex-direction: column;
                align-items: stretch;
                padding: 20px;
                gap: 8px;
                border-bottom: 1px solid var(--border-soft);
                backdrop-filter: blur(16px);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav li a {
                padding: 12px 18px;
                border-radius: 12px;
                justify-content: flex-start;
            }
            .brand-sub {
                display: none;
            }
            .brand-name {
                font-size: 0.9rem;
            }
            .header-actions {
                gap: 8px;
            }
            .btn-login {
                padding: 7px 14px;
                font-size: 0.75rem;
            }
            .btn-signup {
                padding: 8px 16px;
                font-size: 0.75rem;
            }
            .hero-section {
                padding: 100px 0 50px;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-desc {
                font-size: 0.92rem;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 15px;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .cta-box {
                padding: 35px 22px;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 15px;
            }
            .hero-title {
                font-size: 1.4rem;
            }
            .hero-actions {
                flex-direction: column;
                gap: 12px;
            }
            .btn-primary-hero, .btn-secondary-hero {
                width: 100%;
                text-align: center;
            }
            .stats-bar {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 1.4rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #121212;
            --bg-secondary: #1C1C1E;
            --bg-tertiary: #252528;
            --accent-gold: #C5A059;
            --accent-amber: #FFBF00;
            --text-primary: #F5F5F7;
            --text-secondary: #D4AC0D;
            --text-muted: #A0A0A8;
            --text-body: #C9C9CE;
            --border-subtle: rgba(197, 160, 89, 0.25);
            --border-strong: rgba(197, 160, 89, 0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.55);
            --shadow-gold: 0 4px 20px rgba(197, 160, 89, 0.3);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --container-max: 1200px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 32px;
            --space-lg: 56px;
            --space-xl: 80px;
            --nav-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Be Vietnam Pro', sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }

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

        /* ===== HEADER / NAV ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(18, 18, 18, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-sm);
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-gold));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #1C1C1E;
            font-size: 1.4rem;
            flex-shrink: 0;
            box-shadow: var(--shadow-gold);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-name {
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }

        .brand-sub {
            font-size: 0.7rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .main-nav ul {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
        }

        .main-nav a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .main-nav a i {
            font-size: 0.9rem;
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(197, 160, 89, 0.1);
        }

        .main-nav a.active {
            color: var(--accent-amber);
            background: rgba(197, 160, 89, 0.15);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 10px 18px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            transition: all var(--transition-base);
            background: transparent;
        }

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .btn-signup {
            padding: 10px 22px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 700;
            color: #1C1C1E;
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-gold));
            box-shadow: 0 4px 16px rgba(197, 160, 89, 0.4);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(197, 160, 89, 0.5);
        }

        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            font-size: 1.3rem;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-base);
            flex-shrink: 0;
        }

        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        /* ===== HERO ===== */
        .hero-section {
            padding: calc(var(--nav-height) + var(--space-xl)) 0 var(--space-lg);
            background: linear-gradient(160deg, rgba(18, 18, 18, 0.95) 0%, rgba(28, 28, 30, 0.9) 50%, rgba(37, 37, 40, 0.95) 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 70%;
            height: 120%;
            background: radial-gradient(ellipse at center, rgba(197, 160, 89, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .hero-content {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: var(--space-md);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 50px;
            background: rgba(197, 160, 89, 0.12);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            font-size: 0.85rem;
            font-weight: 600;
        }

        .hero-badge i {
            color: var(--accent-amber);
        }

        .hero-title {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.03em;
            color: var(--text-primary);
        }

        .hero-title .highlight {
            color: var(--accent-amber);
        }

        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-body);
            line-height: 1.7;
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            flex-wrap: wrap;
            margin-top: var(--space-xs);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            color: #1C1C1E;
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-gold));
            box-shadow: 0 8px 24px rgba(197, 160, 89, 0.4);
            transition: all var(--transition-base);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(197, 160, 89, 0.55);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            border: 1px solid var(--border-strong);
            transition: all var(--transition-base);
            background: transparent;
        }

        .btn-secondary:hover {
            background: rgba(197, 160, 89, 0.1);
            border-color: var(--accent-gold);
        }

        .hero-stats {
            display: flex;
            gap: var(--space-md);
            margin-top: var(--space-sm);
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hero-stat-value {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-amber);
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .hero-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-subtle);
            min-height: 420px;
        }

        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        .hero-visual-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: var(--space-md);
            background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.4) 60%, transparent 100%);
        }

        .hero-visual-overlay h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .hero-visual-overlay p {
            font-size: 0.9rem;
            color: var(--text-body);
        }

        /* ===== SECTION COMMON ===== */
        .section {
            padding: var(--space-xl) 0;
        }

        .section-header {
            margin-bottom: var(--space-lg);
            max-width: 720px;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent-amber);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: var(--space-xs);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            margin-bottom: var(--space-sm);
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* ===== INFO BLOCKS ===== */
        .info-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: center;
            margin-bottom: var(--space-xl);
        }

        .info-block.reverse {
            direction: rtl;
        }

        .info-block.reverse > * {
            direction: ltr;
        }

        .info-text {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: var(--space-sm);
        }

        .info-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.35;
        }

        .info-text p {
            color: var(--text-body);
            font-size: 1rem;
            line-height: 1.7;
        }

        .info-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--space-xs);
            margin-top: var(--space-xs);
            width: 100%;
        }

        .info-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .info-list li i {
            color: var(--accent-amber);
            font-size: 1rem;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .info-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-subtle);
            position: relative;
        }

        .info-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-md);
        }

        .info-image-badge {
            position: absolute;
            top: var(--space-sm);
            right: var(--space-sm);
            padding: 8px 16px;
            border-radius: 50px;
            background: rgba(0, 0, 0, 0.8);
            color: var(--accent-amber);
            font-size: 0.8rem;
            font-weight: 700;
            backdrop-filter: blur(8px);
        }

        /* ===== TIPS GRID ===== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
        }

        .tip-card {
            background: var(--bg-secondary);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
            align-items: flex-start;
        }

        .tip-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-strong);
        }

        .tip-number {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-gold));
            color: #1C1C1E;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .tip-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .tip-card p {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        /* ===== PROCESS ===== */
        .process-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }

        .process-item {
            display: flex;
            gap: var(--space-sm);
            align-items: flex-start;
            padding: var(--space-sm);
            border-left: 3px solid var(--accent-gold);
            background: var(--bg-secondary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            transition: all var(--transition-base);
        }

        .process-item:hover {
            background: var(--bg-tertiary);
            border-left-color: var(--accent-amber);
        }

        .process-step {
            font-weight: 800;
            color: var(--accent-amber);
            font-size: 1.2rem;
            min-width: 40px;
        }

        .process-content h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .process-content p {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.6;
        }

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

        .faq-item {
            background: var(--bg-secondary);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-subtle);
            padding: var(--space-sm) var(--space-md);
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .faq-item:hover {
            border-color: var(--border-strong);
            background: var(--bg-tertiary);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-sm);
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            width: 100%;
            text-align: left;
            padding: 8px 0;
        }

        .faq-question i {
            color: var(--accent-amber);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: var(--space-sm);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(197, 160, 89, 0.1) 0%, rgba(28, 28, 30, 0.95) 50%, rgba(197, 160, 89, 0.08) 100%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: var(--space-xl) 0;
        }

        .cta-box {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            border: 1px solid var(--border-strong);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: var(--space-sm);
            box-shadow: var(--shadow-gold);
            max-width: 800px;
            margin: 0 auto;
        }

        .cta-box h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.3;
        }

        .cta-box p {
            color: var(--text-body);
            font-size: 1.05rem;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            gap: var(--space-sm);
            flex-wrap: wrap;
            margin-top: var(--space-xs);
        }

        /* ===== FAB ===== */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 900;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.75);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            box-shadow: 0 0 15px rgba(197, 160, 89, 0.4), 0 4px 20px rgba(0, 0, 0, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-amber);
            font-size: 1.4rem;
            cursor: pointer;
            transition: all var(--transition-base);
            animation: fabBreath 3s ease-in-out infinite;
            opacity: 0.6;
            position: relative;
        }

        .fab::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            background: linear-gradient(135deg, #00F0FF, #FFBF00, #FF007F);
            z-index: -1;
            opacity: 0.8;
        }

        .fab::after {
            content: '';
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #FF007F;
            border: 2px solid #1C1C1E;
            animation: blinkDot 2s ease-in-out infinite;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(197, 160, 89, 0.7), 0 8px 30px rgba(0, 0, 0, 0.6);
        }

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

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

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

        /* ===== FOOTER ===== */
        .site-footer {
            background: #0D0D0E;
            border-top: 1px solid var(--border-subtle);
            padding: var(--space-lg) 0 var(--space-md);
        }

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

        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
            align-items: flex-start;
        }

        .footer-brand .logo {
            margin-bottom: var(--space-xs);
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .footer-badges {
            display: flex;
            gap: var(--space-xs);
            flex-wrap: wrap;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            border-radius: 50px;
            background: rgba(197, 160, 89, 0.1);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            font-size: 0.75rem;
            font-weight: 600;
        }

        .footer-column h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--space-sm);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .footer-column ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-column a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-column a:hover {
            color: var(--accent-amber);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: var(--space-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-sm);
            flex-wrap: wrap;
        }

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

        .footer-bottom a {
            color: var(--text-secondary);
            font-weight: 500;
        }

        .footer-bottom a:hover {
            color: var(--accent-amber);
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .hero-visual {
                min-height: 320px;
            }
            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .info-block {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .info-block.reverse {
                direction: ltr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
                --space-lg: 40px;
                --space-xl: 56px;
            }
            .main-nav {
                display: none;
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(18, 18, 18, 0.98);
                backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border-subtle);
                padding: var(--space-sm);
                z-index: 999;
            }
            .main-nav.open {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }
            .main-nav a {
                padding: 14px 16px;
                border-radius: var(--radius-sm);
            }
            .mobile-toggle {
                display: flex;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .btn-primary, .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .hero-actions {
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
            }
            .nav-actions .btn-login {
                padding: 8px 12px;
                font-size: 0.8rem;
            }
            .nav-actions .btn-signup {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .brand-name {
                font-size: 0.9rem;
            }
            .brand-sub {
                font-size: 0.65rem;
            }
            .logo-icon {
                width: 38px;
                height: 38px;
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-stats {
                gap: var(--space-sm);
            }
            .hero-stat-value {
                font-size: 1.3rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .info-text h3 {
                font-size: 1.3rem;
            }
            .tip-card {
                padding: var(--space-sm);
            }
            .process-item {
                padding: var(--space-xs);
            }
            .cta-box {
                padding: var(--space-md);
            }
            .hero-visual {
                min-height: 240px;
            }
        }