/* roulang page: index */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.72);
            --bg-glass: rgba(255, 255, 255, 0.04);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-glow: rgba(0, 82, 255, 0.45);
            --accent-cyan-glow: rgba(0, 240, 255, 0.35);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #64748B;
            --border-glass: rgba(0, 240, 255, 0.16);
            --border-glass-hover: rgba(0, 240, 255, 0.38);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --shadow-soft: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 24px rgba(0, 82, 255, 0.38);
            --shadow-cyan-glow: 0 0 18px rgba(0, 240, 255, 0.28);
            --font-sans: 'Inter', 'Segoe UI', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
            --spacing-section: 88px;
            --spacing-section-mobile: 56px;
            --transition-base: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
            background-image: radial-gradient(ellipse at 20% 10%, rgba(0, 82, 255, 0.10) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 85%, rgba(0, 240, 255, 0.06) 0%, transparent 50%);
        }

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

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

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

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

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

        .container {
            width: 100%;
            max-width: 1180px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(8, 9, 15, 0.86);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.10);
            transition: background var(--transition-base), border-color var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            border-bottom-color: rgba(0, 240, 255, 0.22);
            box-shadow: 0 4px 28px rgba(0, 0, 0, 0.45);
        }

        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 14px;
            padding-bottom: 14px;
            min-height: 68px;
        }

        .navbar-brand {
            font-size: 1.08rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .navbar-brand .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: #fff;
            box-shadow: var(--shadow-glow);
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .nav-links a {
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-base);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--text-primary);
            background: rgba(0, 240, 255, 0.06);
        }
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 1px;
            box-shadow: 0 0 8px var(--accent-cyan-glow);
        }

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-login {
            padding: 9px 16px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .btn-login:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .btn-signup {
            padding: 10px 20px;
            font-size: 0.88rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent-blue), #0066FF);
            color: #fff;
            border-radius: 8px;
            box-shadow: 0 4px 18px rgba(0, 82, 255, 0.45);
            transition: all var(--transition-bounce);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }
        .btn-signup::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 200%;
            height: 100%;
            background: linear-gradient(100deg, transparent 30%, rgba(255, 255, 255, 0.16) 50%, transparent 70%);
            animation: btnShimmer 3.2s infinite;
        }
        @keyframes btnShimmer {
            0% { left: -100%; }
            55% { left: 100%; }
            100% { left: 100%; }
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(0, 82, 255, 0.6);
            color: #fff;
        }

        /* Mobile nav toggle */
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--text-primary);
            transition: all var(--transition-base);
            flex-shrink: 0;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--border-glass-hover);
        }

        /* ===== Hero Section ===== */
        .hero-section {
            padding-top: 138px;
            padding-bottom: 72px;
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            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(180deg, rgba(8, 9, 15, 0.82) 0%, rgba(8, 9, 15, 0.68) 45%, rgba(8, 9, 15, 0.94) 100%);
            z-index: -1;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(180deg, transparent 0%, var(--bg-primary) 100%);
            z-index: -1;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.25fr 0.75fr;
            gap: 56px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 16px;
            border-radius: 99px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.22);
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent-cyan);
            letter-spacing: 0.04em;
            margin-bottom: 20px;
            backdrop-filter: blur(10px);
        }
        .hero-badge .dot {
            width: 7px;
            height: 7px;
            background: var(--accent-cyan);
            border-radius: 50%;
            animation: pulseDot 1.8s ease-in-out infinite;
        }
        @keyframes pulseDot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.45; transform: scale(0.7); }
        }

        .hero-title {
            font-size: clamp(2rem, 4.6vw, 3.4rem);
            font-weight: 800;
            line-height: 1.16;
            letter-spacing: -0.025em;
            margin-bottom: 22px;
            color: var(--text-primary);
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), #33F5FF);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-description {
            font-size: 1.04rem;
            line-height: 1.68;
            color: var(--text-secondary);
            max-width: 620px;
            margin-bottom: 30px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 34px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            border-radius: 12px;
            font-weight: 700;
            font-size: 0.98rem;
            background: linear-gradient(135deg, var(--accent-blue), #0066FF);
            color: #fff;
            box-shadow: 0 6px 26px rgba(0, 82, 255, 0.45);
            transition: all var(--transition-bounce);
            position: relative;
            overflow: hidden;
        }
        .btn-primary::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 200%;
            height: 100%;
            background: linear-gradient(100deg, transparent 30%, rgba(255, 255, 255, 0.14) 50%, transparent 70%);
            animation: btnShimmer 3s infinite;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 82, 255, 0.62);
            color: #fff;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 24px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 0.95rem;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(12px);
            transition: all var(--transition-bounce);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--border-glass-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 22px rgba(0, 240, 255, 0.18);
            color: var(--text-primary);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 3px;
        }
        .hero-stat .stat-number {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-primary);
        }
        .hero-stat .stat-number .stat-suffix {
            color: var(--accent-cyan);
        }
        .hero-stat .stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Hero Progress Ring Panel */
        .hero-panel {
            background: var(--bg-glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 30px 28px;
            box-shadow: var(--shadow-soft), var(--shadow-cyan-glow);
        }
        .hero-panel .panel-title {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-panel .panel-title i {
            color: var(--accent-cyan);
            font-size: 1.1rem;
        }

        .progress-ring-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 14px;
            margin-bottom: 22px;
        }
        .progress-ring {
            width: 132px;
            height: 132px;
            position: relative;
        }
        .progress-ring svg {
            transform: rotate(-90deg);
            width: 100%;
            height: 100%;
        }
        .progress-ring .ring-bg {
            fill: none;
            stroke: rgba(255, 255, 255, 0.08);
            stroke-width: 9;
        }
        .progress-ring .ring-fill {
            fill: none;
            stroke: url(#ringGradient);
            stroke-width: 9;
            stroke-linecap: round;
            stroke-dasharray: 283;
            stroke-dashoffset: 56.6;
            transition: stroke-dashoffset 1.2s ease;
        }
        .progress-ring .ring-center-text {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.7rem;
            color: var(--accent-cyan);
            letter-spacing: -0.02em;
        }
        .progress-ring .ring-center-text span {
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--text-muted);
            letter-spacing: 0.04em;
        }

        .tier-preview-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .tier-preview-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 16px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.035);
            border: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.88rem;
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .tier-preview-item:hover {
            background: rgba(0, 240, 255, 0.05);
            border-color: var(--border-glass-hover);
        }
        .tier-preview-item .tier-name {
            font-weight: 600;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .tier-preview-item .tier-name i {
            color: var(--accent-cyan);
            font-size: 0.9rem;
        }
        .tier-preview-item .tier-level {
            font-size: 0.78rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .tier-preview-item.featured {
            border-color: rgba(0, 240, 255, 0.35);
            background: rgba(0, 240, 255, 0.06);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.12);
        }
        .tier-preview-item.featured .tier-level {
            color: var(--accent-cyan);
            font-weight: 700;
        }

        /* ===== Section Base ===== */
        .section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
            position: relative;
        }
        .section-heading {
            max-width: 680px;
            margin-bottom: 44px;
        }
        .section-heading .section-tag {
            display: inline-block;
            font-size: 0.76rem;
            font-weight: 700;
            letter-spacing: 0.07em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }
        .section-heading h2 {
            font-size: clamp(1.5rem, 3vw, 2.15rem);
            font-weight: 800;
            line-height: 1.24;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .section-heading p {
            font-size: 0.98rem;
            line-height: 1.68;
            color: var(--text-secondary);
        }

        /* ===== Product Screenshot Stage ===== */
        .stage-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            align-items: stretch;
        }
        .stage-feature-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(12px);
            transition: all var(--transition-bounce);
            cursor: pointer;
            min-height: 200px;
            display: flex;
            align-items: flex-end;
        }
        .stage-feature-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-glass-hover);
            box-shadow: 0 12px 36px rgba(0, 82, 255, 0.25), var(--shadow-cyan-glow);
        }
        .stage-feature-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.55;
            transition: opacity var(--transition-base);
        }
        .stage-feature-card:hover img {
            opacity: 0.7;
        }
        .stage-feature-card .stage-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 25%, rgba(8, 9, 15, 0.88) 100%);
        }
        .stage-feature-card .stage-info {
            position: relative;
            z-index: 2;
            padding: 18px 16px;
            width: 100%;
        }
        .stage-feature-card .stage-info h3 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 5px;
            color: var(--text-primary);
        }
        .stage-feature-card .stage-info p {
            font-size: 0.8rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ===== Steps Section ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .step-card {
            padding: 28px 24px;
            border-radius: var(--radius-md);
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(10px);
            transition: all var(--transition-bounce);
            position: relative;
            overflow: hidden;
        }
        .step-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .step-card:hover {
            border-color: var(--border-glass-hover);
            transform: translateY(-5px);
            box-shadow: var(--shadow-soft), var(--shadow-cyan-glow);
        }
        .step-card:hover::before {
            opacity: 1;
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            font-weight: 800;
            font-size: 1.15rem;
            color: #fff;
            margin-bottom: 16px;
            box-shadow: 0 4px 14px rgba(0, 82, 255, 0.35);
        }
        .step-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .step-card p {
            font-size: 0.9rem;
            line-height: 1.65;
            color: var(--text-secondary);
        }

        /* ===== Ranking Section ===== */
        .ranking-card {
            background: var(--bg-glass);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
        }
        .ranking-header {
            display: grid;
            grid-template-columns: 60px 1.5fr 0.8fr 0.6fr 0.6fr;
            padding: 14px 20px;
            font-size: 0.76rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: var(--text-muted);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            gap: 12px;
        }
        .ranking-row {
            display: grid;
            grid-template-columns: 60px 1.5fr 0.8fr 0.6fr 0.6fr;
            padding: 16px 20px;
            align-items: center;
            gap: 12px;
            font-size: 0.9rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: background var(--transition-base);
            cursor: pointer;
        }
        .ranking-row:hover {
            background: rgba(0, 240, 255, 0.04);
        }
        .ranking-row:last-child {
            border-bottom: none;
        }
        .rank-badge {
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            font-weight: 800;
            font-size: 0.9rem;
        }
        .rank-badge.rank-1 { background: rgba(255, 215, 0, 0.16); color: #FFD700; border: 1px solid rgba(255, 215, 0, 0.3); }
        .rank-badge.rank-2 { background: rgba(192, 192, 192, 0.12); color: #C0C0C0; border: 1px solid rgba(192, 192, 192, 0.25); }
        .rank-badge.rank-3 { background: rgba(205, 127, 50, 0.14); color: #CD7F32; border: 1px solid rgba(205, 127, 50, 0.28); }
        .rank-badge.rank-other { background: rgba(255, 255, 255, 0.05); color: var(--text-secondary); border: 1px solid rgba(255, 255, 255, 0.08); }

        .rank-name {
            font-weight: 600;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .rank-name i {
            color: var(--accent-cyan);
            font-size: 0.85rem;
        }
        .rank-stat {
            font-weight: 600;
            color: var(--text-secondary);
        }
        .rank-stat.hot {
            color: var(--accent-cyan);
        }
        .rank-trend {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.83rem;
            font-weight: 600;
        }
        .rank-trend.up { color: #10B981; }
        .rank-trend.stable { color: var(--text-muted); }

        /* ===== Plans Comparison ===== */
        .plans-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
        }
        .plan-card {
            padding: 28px 24px;
            border-radius: var(--radius-md);
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(12px);
            transition: all var(--transition-bounce);
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .plan-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-glass-hover);
        }
        .plan-card.featured {
            border-color: rgba(0, 240, 255, 0.4);
            background: rgba(0, 82, 255, 0.08);
            box-shadow: var(--shadow-cyan-glow), var(--shadow-soft);
        }
        .plan-card .plan-badge {
            position: absolute;
            top: -12px;
            right: 18px;
            padding: 4px 12px;
            border-radius: 6px;
            font-size: 0.7rem;
            font-weight: 800;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            box-shadow: 0 4px 14px rgba(0, 82, 255, 0.4);
        }
        .plan-card .plan-name {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .plan-card .plan-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.55;
            margin-bottom: 18px;
        }
        .plan-card .plan-features {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 22px;
            flex: 1;
        }
        .plan-card .plan-features li {
            font-size: 0.85rem;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.5;
        }
        .plan-card .plan-features li i {
            color: var(--accent-cyan);
            font-size: 0.8rem;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .btn-plan {
            display: block;
            width: 100%;
            text-align: center;
            padding: 12px 20px;
            border-radius: 10px;
            font-weight: 700;
            font-size: 0.92rem;
            transition: all var(--transition-bounce);
        }
        .btn-plan-outline {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            color: var(--text-primary);
        }
        .btn-plan-outline:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: var(--border-glass-hover);
            color: var(--text-primary);
        }
        .btn-plan-solid {
            background: linear-gradient(135deg, var(--accent-blue), #0066FF);
            color: #fff;
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.4);
        }
        .btn-plan-solid:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 82, 255, 0.55);
            color: #fff;
        }

        /* ===== Reviews Section ===== */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .review-card {
            padding: 24px 22px;
            border-radius: var(--radius-md);
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(10px);
            transition: all var(--transition-base);
        }
        .review-card:hover {
            border-color: var(--border-glass-hover);
            box-shadow: var(--shadow-soft);
        }
        .review-stars {
            display: flex;
            gap: 4px;
            margin-bottom: 14px;
            color: #FFC107;
            font-size: 0.9rem;
        }
        .review-text {
            font-size: 0.9rem;
            line-height: 1.68;
            color: var(--text-secondary);
            margin-bottom: 18px;
            font-style: italic;
        }
        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .review-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            color: #fff;
            flex-shrink: 0;
        }
        .review-author .review-name {
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--text-primary);
        }
        .review-author .review-meta {
            font-size: 0.76rem;
            color: var(--text-muted);
        }

        /* ===== News / CMS Section ===== */
        .news-layout {
            display: grid;
            grid-template-columns: 1.5fr 0.8fr;
            gap: 36px;
        }
        .news-main-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .news-item {
            display: block;
            padding: 18px 20px;
            border-radius: 12px;
            background: var(--bg-glass);
            border: 1px solid rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(8px);
            transition: all var(--transition-base);
        }
        .news-item:hover {
            border-color: var(--border-glass-hover);
            background: rgba(0, 240, 255, 0.04);
            transform: translateX(4px);
        }
        .news-item .news-cat {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 6px;
        }
        .news-item h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.45;
        }
        .news-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
        }
        .news-item time {
            font-size: 0.76rem;
            color: var(--text-muted);
        }
        .news-empty {
            padding: 28px;
            text-align: center;
            border-radius: 12px;
            background: var(--bg-glass);
            border: 1px dashed rgba(255, 255, 255, 0.1);
            color: var(--text-muted);
            font-size: 0.92rem;
        }

        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .sidebar-card {
            padding: 22px 20px;
            border-radius: var(--radius-md);
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(10px);
        }
        .sidebar-card h3 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--accent-cyan);
        }
        .sidebar-card ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .sidebar-card ul li a {
            font-size: 0.86rem;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            line-height: 1.5;
            transition: color var(--transition-base);
        }
        .sidebar-card ul li a:hover {
            color: var(--accent-cyan);
        }
        .sidebar-card ul li a i {
            font-size: 0.7rem;
            color: var(--accent-cyan);
            margin-top: 5px;
            flex-shrink: 0;
        }

        /* ===== Download Section ===== */
        .download-box {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            padding: 40px 36px;
            border-radius: var(--radius-xl);
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-soft), var(--shadow-cyan-glow);
        }
        .download-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-soft);
        }
        .download-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 260px;
        }
        .download-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 20px;
        }
        .btn-download {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 13px 22px;
            border-radius: 12px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition-bounce);
            border: 1px solid var(--border-glass);
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-primary);
        }
        .btn-download:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--border-glass-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-cyan-glow);
            color: var(--text-primary);
        }
        .btn-download.primary {
            background: linear-gradient(135deg, var(--accent-blue), #0066FF);
            border-color: transparent;
            color: #fff;
            box-shadow: 0 4px 18px rgba(0, 82, 255, 0.42);
        }
        .btn-download.primary:hover {
            box-shadow: 0 8px 30px rgba(0, 82, 255, 0.6);
            color: #fff;
        }

        /* ===== FAQ Section ===== */
        .faq-list {
            max-width: 780px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border-radius: 12px;
            background: var(--bg-glass);
            border: 1px solid rgba(255, 255, 255, 0.07);
            backdrop-filter: blur(8px);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--border-glass-hover);
        }
        .faq-item details summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-primary);
            list-style: none;
            transition: color var(--transition-base);
        }
        .faq-item details summary::-webkit-details-marker {
            display: none;
        }
        .faq-item details summary i {
            color: var(--accent-cyan);
            font-size: 0.8rem;
            transition: transform var(--transition-base);
        }
        .faq-item details[open] summary {
            color: var(--accent-cyan);
        }
        .faq-item details[open] summary i {
            transform: rotate(180deg);
        }
        .faq-item details .faq-answer {
            padding: 0 20px 18px;
            font-size: 0.88rem;
            line-height: 1.68;
            color: var(--text-secondary);
        }

        /* ===== Bottom CTA ===== */
        .cta-section {
            padding-top: 72px;
            padding-bottom: 72px;
            text-align: center;
        }
        .cta-inner {
            max-width: 700px;
            margin: 0 auto;
            padding: 48px 36px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.12), rgba(0, 240, 255, 0.06));
            border: 1px solid rgba(0, 240, 255, 0.22);
            backdrop-filter: blur(18px);
            box-shadow: var(--shadow-soft), var(--shadow-glow);
        }
        .cta-inner h2 {
            font-size: clamp(1.4rem, 3vw, 1.9rem);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            color: var(--text-primary);
        }
        .cta-inner p {
            font-size: 0.98rem;
            line-height: 1.65;
            color: var(--text-secondary);
            margin-bottom: 26px;
        }
        .cta-inner .hero-cta-group {
            justify-content: center;
        }

        /* ===== Footer ===== */
        .site-footer {
            padding-top: 48px;
            padding-bottom: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(12px);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand h3 {
            font-size: 1rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.65;
            color: var(--text-muted);
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: var(--text-muted);
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 9px;
        }
        .footer-col ul li a {
            font-size: 0.86rem;
            color: var(--text-secondary);
            transition: color var(--transition-base);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            padding-top: 22px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .footer-bottom .footer-domain {
            color: var(--text-muted);
        }
        .footer-bottom .footer-legal {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
        }
        .footer-bottom .footer-legal a {
            color: var(--text-muted);
            font-size: 0.8rem;
            transition: color var(--transition-base);
        }
        .footer-bottom .footer-legal a:hover {
            color: var(--accent-cyan);
        }

        /* ===== FAB (Floating Action Button) ===== */
        .fab-float {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(8, 9, 15, 0.72);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.72), rgba(8, 9, 15, 0.72)), linear-gradient(135deg, var(--accent-blue), var(--accent-cyan), #FF007F);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4), 0 4px 20px rgba(0, 0, 0, 0.4);
            transition: all var(--transition-bounce);
            cursor: pointer;
            animation: fabBreath 2.8s ease-in-out infinite;
        }
        .fab-float:hover {
            transform: scale(1.1);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.6), 0 6px 26px rgba(0, 0, 0, 0.5);
            animation-play-state: paused;
        }
        .fab-float:active {
            transform: scale(0.95);
        }
        .fab-float i {
            font-size: 1.4rem;
            color: var(--accent-cyan);
            text-shadow: 0 0 12px rgba(0, 240, 255, 0.7);
        }
        .fab-float::after {
            content: '';
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: #FF007F;
            border: 2px solid var(--bg-primary);
            animation: fabPing 1.6s ease-in-out infinite;
        }
        @keyframes fabBreath {
            0%, 100% { opacity: 0.75; }
            50% { opacity: 1; }
        }
        @keyframes fabPing {
            0%, 100% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.35); opacity: 0.5; }
        }

        /* ===== Bottom Fixed CTA Bar ===== */
        .bottom-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 48;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-top: 1px solid rgba(0, 240, 255, 0.16);
            padding: 12px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transform: translateY(100%);
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .bottom-cta-bar.visible {
            transform: translateY(0);
        }
        .bottom-cta-content {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            flex: 1;
        }
        .bottom-cta-content strong {
            color: var(--text-primary);
            font-weight: 700;
        }
        .bottom-cta-bar .btn-primary {
            padding: 10px 20px;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .stage-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .plans-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .plans-grid .plan-card.featured {
                grid-column: 1 / -1;
                order: -1;
            }
            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .download-box {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 56px;
            }
            .navbar {
                flex-wrap: wrap;
                gap: 10px;
            }
            .navbar-brand {
                font-size: 0.95rem;
            }
            .navbar-brand .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
                border-radius: 8px;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding-top: 12px;
                border-top: 1px solid rgba(255, 255, 255, 0.07);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                text-align: left;
                padding: 10px 14px;
                font-size: 0.92rem;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-auth {
                margin-left: auto;
                gap: 6px;
            }
            .btn-login {
                padding: 8px 12px;
                font-size: 0.8rem;
            }
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .hero-section {
                padding-top: 112px;
                padding-bottom: 48px;
            }
            .hero-title {
                font-size: clamp(1.6rem, 5.5vw, 2.2rem);
            }
            .hero-description {
                font-size: 0.94rem;
            }
            .hero-stats {
                gap: 18px;
            }
            .hero-stat .stat-number {
                font-size: 1.25rem;
            }
            .hero-panel {
                padding: 22px 18px;
            }
            .stage-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .ranking-header {
                grid-template-columns: 44px 1fr 0.6fr 0.5fr;
                font-size: 0.68rem;
                padding: 10px 14px;
                gap: 8px;
            }
            .ranking-row {
                grid-template-columns: 44px 1fr 0.6fr 0.5fr;
                padding: 12px 14px;
                font-size: 0.82rem;
                gap: 8px;
            }
            .ranking-header .rank-trend-col,
            .ranking-row .rank-trend {
                display: none;
            }
            .plans-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .plans-grid .plan-card.featured {
                grid-column: auto;
                order: 0;
            }
            .reviews-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .download-box {
                padding: 26px 20px;
                gap: 22px;
            }
            .cta-inner {
                padding: 32px 22px;
            }
            .section-heading {
                margin-bottom: 30px;
            }
            .bottom-cta-bar {
                padding: 10px 16px;
                flex-wrap: wrap;
                text-align: center;
            }
            .bottom-cta-content {
                font-size: 0.8rem;
                justify-content: center;
                flex-wrap: wrap;
            }
            .fab-float {
                left: 12px;
                bottom: 120px;
                width: 48px;
                height: 48px;
            }
            .fab-float i {
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .navbar {
                gap: 8px;
            }
            .nav-auth {
                gap: 4px;
            }
            .btn-login {
                padding: 7px 10px;
                font-size: 0.74rem;
            }
            .btn-signup {
                padding: 7px 12px;
                font-size: 0.74rem;
                border-radius: 6px;
            }
            .navbar-brand {
                font-size: 0.85rem;
                gap: 6px;
            }
            .navbar-brand .brand-icon {
                width: 28px;
                height: 28px;
                font-size: 0.8rem;
                border-radius: 7px;
            }
            .hero-cta-group {
                flex-direction: column;
                gap: 10px;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
                font-size: 0.9rem;
                padding: 13px 20px;
            }
            .hero-stats {
                flex-direction: column;
                gap: 12px;
            }
            .hero-panel .panel-title {
                font-size: 0.9rem;
            }
            .progress-ring {
                width: 110px;
                height: 110px;
            }
            .progress-ring .ring-center-text {
                font-size: 1.4rem;
            }
            .section-heading h2 {
                font-size: 1.35rem;
            }
            .section-heading p {
                font-size: 0.9rem;
            }
            .download-actions {
                flex-direction: column;
            }
            .btn-download {
                width: 100%;
                justify-content: center;
            }
            .cta-inner .hero-cta-group {
                flex-direction: column;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .footer-bottom .footer-legal {
                justify-content: center;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #121212;
            --bg-secondary: #1C1C1E;
            --bg-card: #1A1A1E;
            --bg-elevated: #232327;
            --accent-bronze: #C5A059;
            --accent-amber: #FFBF00;
            --accent-gold-light: #D4AC0D;
            --text-primary: #F5F5F7;
            --text-secondary: #D4D0C8;
            --text-muted: #8E8A82;
            --text-soft-gold: #D4AC0D;
            --border-dark: #2A2A30;
            --border-gold: rgba(197, 160, 89, 0.35);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-gold: 0 0 28px rgba(197, 160, 89, 0.18);
            --shadow-amber: 0 0 32px rgba(255, 191, 0, 0.22);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 9999px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --font-body: 'Inter', 'Segoe UI', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
            --transition-fast: 180ms ease;
            --transition-base: 280ms ease;
            --transition-slow: 420ms ease;
        }

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

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

        body {
            font-family: var(--font-body);
            background-color: 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 {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }

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

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

        ul {
            list-style: none;
        }

        ::selection {
            background-color: var(--accent-bronze);
            color: #121212;
        }

        .container {
            width: 100%;
            max-width: 1180px;
            margin: 0 auto;
            padding-left: var(--space-md);
            padding-right: var(--space-md);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(18, 18, 18, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(197, 160, 89, 0.15);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
            transition: all var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(18, 18, 18, 0.96);
            border-bottom-color: rgba(197, 160, 89, 0.3);
            box-shadow: 0 6px 36px rgba(0, 0, 0, 0.55);
        }

        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            padding-bottom: 14px;
            gap: 20px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.15rem;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .navbar-brand .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, rgba(197, 160, 89, 0.22), rgba(255, 191, 0, 0.12));
            border: 1px solid rgba(197, 160, 89, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: var(--accent-amber);
            transition: all var(--transition-base);
        }

        .navbar-brand:hover .brand-icon {
            box-shadow: var(--shadow-amber);
            transform: scale(1.05);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-links a {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            transition: color var(--transition-base);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-bronze), var(--accent-amber));
            border-radius: 2px;
            transition: width var(--transition-base);
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-amber);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

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

        .btn-login {
            padding: 9px 18px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-radius: var(--radius-full);
            border: 1px solid transparent;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-login:hover {
            color: var(--accent-amber);
            border-color: rgba(197, 160, 89, 0.4);
            background: rgba(197, 160, 89, 0.08);
        }

        .btn-signup {
            padding: 10px 22px;
            font-weight: 700;
            font-size: 0.9rem;
            color: #1A1A1A;
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-bronze));
            border-radius: var(--radius-full);
            box-shadow: var(--shadow-amber);
            white-space: nowrap;
            transition: all var(--transition-base);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 40px rgba(255, 191, 0, 0.38);
        }

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

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-dark);
            color: var(--text-primary);
            font-size: 1.25rem;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-base);
        }

        .nav-toggle:hover {
            border-color: rgba(197, 160, 89, 0.5);
            color: var(--accent-amber);
        }

        /* ========== ARTICLE PAGE ========== */
        .article-page {
            padding-top: 78px;
            min-height: 100vh;
        }

        .breadcrumb-section {
            padding: 22px 0 0;
            background: transparent;
        }

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

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

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

        .breadcrumb-nav .separator {
            color: var(--accent-bronze);
            font-size: 0.7rem;
        }

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

        /* Article Hero */
        .article-hero {
            padding: 36px 0 20px;
            position: relative;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -120px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(197, 160, 89, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            z-index: 0;
        }

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

        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            background: rgba(197, 160, 89, 0.1);
            border: 1px solid rgba(197, 160, 89, 0.3);
            color: var(--accent-amber);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 18px;
        }

        .article-category-badge i {
            font-size: 0.75rem;
        }

        .article-hero h1 {
            font-size: 2.35rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.03em;
            color: var(--text-primary);
            margin-bottom: 18px;
            max-width: 850px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 24px;
            padding-bottom: 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 0.87rem;
        }

        .article-meta-item i {
            color: var(--accent-bronze);
            font-size: 0.85rem;
        }

        .article-hero-summary {
            font-size: 1.08rem;
            line-height: 1.7;
            color: var(--text-secondary);
            max-width: 820px;
            border-left: 3px solid var(--accent-bronze);
            padding-left: 20px;
            margin-bottom: 28px;
        }

        .article-cover-wrapper {
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: var(--shadow-card), var(--shadow-gold);
            border: 1px solid rgba(197, 160, 89, 0.25);
            position: relative;
        }

        .article-cover-wrapper img {
            width: 100%;
            height: auto;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .article-cover-wrapper:hover img {
            transform: scale(1.015);
        }

        /* Article Content */
        .article-body {
            max-width: 820px;
            margin: 0 auto;
            padding: 0 var(--space-sm) var(--space-lg);
        }

        .article-content {
            font-size: 1.03rem;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        .article-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-top: 36px;
            margin-bottom: 16px;
            line-height: 1.3;
            letter-spacing: -0.02em;
        }

        .article-content h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-top: 28px;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .article-content p {
            margin-bottom: 18px;
            color: var(--text-secondary);
        }

        .article-content ul,
        .article-content ol {
            margin-bottom: 18px;
            padding-left: 24px;
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: 8px;
            position: relative;
            color: var(--text-secondary);
        }

        .article-content ul li::before {
            content: '•';
            position: absolute;
            left: -18px;
            color: var(--accent-amber);
            font-weight: 700;
        }

        .article-content ol {
            counter-reset: item;
            list-style: none;
            padding-left: 0;
        }

        .article-content ol li {
            counter-increment: item;
            padding-left: 32px;
            position: relative;
        }

        .article-content ol li::before {
            content: counter(item);
            position: absolute;
            left: 0;
            top: 2px;
            width: 22px;
            height: 22px;
            background: rgba(197, 160, 89, 0.12);
            border: 1px solid rgba(197, 160, 89, 0.35);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent-amber);
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent-bronze);
            padding: 16px 20px;
            margin: 24px 0;
            background: rgba(197, 160, 89, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-soft-gold);
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .article-content a {
            color: var(--accent-amber);
            font-weight: 500;
            border-bottom: 1px dashed rgba(255, 191, 0, 0.4);
            transition: all var(--transition-base);
        }

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

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            max-width: 520px;
            margin: 0 auto;
        }

        .article-not-found i {
            font-size: 3rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .article-not-found h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

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

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-bronze));
            color: #1A1A1A;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: var(--shadow-amber);
            transition: all var(--transition-base);
        }

        .btn-back-home:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 40px rgba(255, 191, 0, 0.35);
        }

        /* Related Articles */
        .related-section {
            padding: var(--space-lg) 0;
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .related-section .section-heading {
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 24px;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .related-section .section-heading i {
            color: var(--accent-bronze);
            font-size: 1.2rem;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            display: block;
        }

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

        .related-card img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-dark);
        }

        .related-card-body {
            padding: 18px 20px 20px;
        }

        .related-card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--accent-amber);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 8px;
        }

        .related-card h3 {
            font-size: 1.02rem;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .related-card .related-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        .related-card .related-meta i {
            color: var(--accent-bronze);
            font-size: 0.75rem;
        }

        /* ========== FAQ SECTION ========== */
        .faq-section {
            padding: var(--space-lg) 0;
            background: transparent;
        }

        .faq-section .section-heading {
            font-size: 1.6rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 28px;
            text-align: left;
            color: var(--text-primary);
        }

        .faq-list {
            max-width: 780px;
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition-base);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 20px 8px;
            font-size: 1.02rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            gap: 16px;
            transition: color var(--transition-base);
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(197, 160, 89, 0.1);
            border: 1px solid rgba(197, 160, 89, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--accent-amber);
            transition: all var(--transition-base);
        }

        .faq-question:hover .faq-icon {
            background: rgba(197, 160, 89, 0.2);
            transform: rotate(90deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            color: var(--text-secondary);
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 8px 20px;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: rgba(255, 191, 0, 0.18);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: var(--space-xl) 0;
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(197, 160, 89, 0.07) 0%, transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-panel {
            position: relative;
            z-index: 1;
            background: var(--bg-card);
            border: 1px solid rgba(197, 160, 89, 0.3);
            border-radius: var(--radius-xl);
            padding: 44px 40px;
            box-shadow: var(--shadow-card), var(--shadow-gold);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-panel-info {
            flex: 1;
            min-width: 280px;
        }

        .cta-panel-info h2 {
            font-size: 1.7rem;
            font-weight: 800;
            letter-spacing: -0.025em;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .cta-panel-info p {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: 18px;
            max-width: 480px;
        }

        .cta-group-count {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            background: rgba(255, 191, 0, 0.08);
            border: 1px solid rgba(255, 191, 0, 0.25);
            color: var(--accent-amber);
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: 18px;
        }

        .cta-group-count i {
            font-size: 0.8rem;
        }

        .cta-panel-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            flex-shrink: 0;
        }

        .btn-create-group {
            padding: 14px 30px;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-bronze));
            color: #1A1A1A;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: var(--shadow-amber);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-create-group:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 44px rgba(255, 191, 0, 0.4);
        }

        .btn-join-group {
            padding: 14px 28px;
            border-radius: var(--radius-full);
            background: transparent;
            border: 2px solid var(--accent-bronze);
            color: var(--accent-amber);
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-join-group:hover {
            background: rgba(197, 160, 89, 0.1);
            border-color: var(--accent-amber);
            box-shadow: var(--shadow-gold);
        }

        /* ========== STICKY BOTTOM BAR ========== */
        .sticky-bottom-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 90;
            background: rgba(18, 18, 18, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid rgba(197, 160, 89, 0.25);
            box-shadow: 0 -4px 28px rgba(0, 0, 0, 0.5);
            padding: 12px 0;
            display: none;
        }

        .sticky-bottom-cta.visible {
            display: block;
        }

        .sticky-bottom-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .sticky-bottom-text {
            font-size: 0.88rem;
            color: var(--text-secondary);
            flex: 1;
            min-width: 0;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .sticky-bottom-text strong {
            color: var(--accent-amber);
        }

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

        .btn-sticky-join {
            padding: 10px 20px;
            border-radius: var(--radius-full);
            background: transparent;
            border: 1.5px solid var(--accent-bronze);
            color: var(--accent-amber);
            font-weight: 600;
            font-size: 0.85rem;
            white-space: nowrap;
            transition: all var(--transition-base);
        }

        .btn-sticky-join:hover {
            background: rgba(197, 160, 89, 0.1);
        }

        .btn-sticky-create {
            padding: 10px 22px;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-bronze));
            color: #1A1A1A;
            font-weight: 700;
            font-size: 0.85rem;
            box-shadow: var(--shadow-amber);
            white-space: nowrap;
            transition: all var(--transition-base);
        }

        .btn-sticky-create:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 30px rgba(255, 191, 0, 0.35);
        }

        /* ========== FAB ========== */
        .fab-cyber-neon {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 28px;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            position: relative;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            transition: all var(--transition-base);
            opacity: 0.65;
            animation: fab-breathe 3s ease-in-out infinite;
        }

        .fab-cyber-neon::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 28px;
            background: linear-gradient(135deg, #CCFF00, #0052FF, #00F0FF);
            z-index: -1;
            animation: fab-gradient-rotate 4s linear infinite;
        }

        .fab-cyber-neon:hover {
            opacity: 1;
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.65), 0 0 50px rgba(204, 255, 0, 0.35);
            transform: scale(1.05);
        }

        .fab-cyber-neon:active {
            transform: scale(0.92);
            box-shadow: 0 0 24px rgba(255, 0, 127, 0.55);
            opacity: 1;
        }

        .fab-cyber-neon i {
            font-size: 1.35rem;
            color: #FFF;
            text-shadow: 0 0 12px rgba(0, 240, 255, 0.8);
            animation: fab-icon-flicker 2.5s ease-in-out infinite;
        }

        .fab-cyber-neon .fab-notification {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #FF007F;
            border: 2px solid #0F0C20;
            animation: fab-notification-blink 1.6s ease-in-out infinite;
        }

        @keyframes fab-breathe {
            0%, 100% { opacity: 0.6; }
            50% { opacity: 0.85; }
        }

        @keyframes fab-gradient-rotate {
            0% { filter: hue-rotate(0deg); }
            100% { filter: hue-rotate(360deg); }
        }

        @keyframes fab-icon-flicker {
            0%, 100% { opacity: 1; }
            48% { opacity: 1; }
            50% { opacity: 0.4; }
            52% { opacity: 1; }
            70% { opacity: 0.7; }
            72% { opacity: 1; }
        }

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

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0E0E10;
            padding: var(--space-xl) 0 0;
            border-top: 1px solid rgba(197, 160, 89, 0.2);
            margin-top: 0;
        }

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

        .footer-brand h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: -0.02em;
            line-height: 1.4;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 380px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--accent-amber);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 16px;
        }

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

        .footer-col ul li a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: all var(--transition-base);
        }

        .footer-col ul li a i {
            font-size: 0.65rem;
            color: var(--accent-bronze);
            transition: transform var(--transition-base);
        }

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

        .footer-col ul li a:hover i {
            transform: translateX(4px);
        }

        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-bottom .footer-legal {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 10px;
            font-size: 0.78rem;
        }

        .footer-bottom .footer-legal span {
            color: var(--text-muted);
        }

        .footer-bottom .footer-legal .badge-18 {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            border: 1.5px solid var(--accent-bronze);
            color: var(--accent-amber);
            font-weight: 700;
            font-size: 0.68rem;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 30px;
            }

            .footer-col:last-child {
                grid-column: span 3;
            }
        }

        @media (max-width: 768px) {
            .navbar {
                padding-top: 10px;
                padding-bottom: 10px;
            }

            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(18, 18, 18, 0.97);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                flex-direction: column;
                align-items: flex-start;
                padding: 20px 24px 28px;
                gap: 6px;
                border-bottom: 1px solid rgba(197, 160, 89, 0.25);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
                transform: translateY(-120%);
                transition: transform var(--transition-base);
                z-index: 99;
            }

            .nav-links.open {
                transform: translateY(0);
            }

            .nav-links a {
                padding: 12px 0;
                font-size: 1rem;
                width: 100%;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }

            .nav-links a:last-child {
                border-bottom: none;
            }

            .nav-links a::after {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-auth {
                display: flex;
                gap: 8px;
            }

            .btn-login {
                padding: 7px 14px;
                font-size: 0.82rem;
            }

            .btn-signup {
                padding: 8px 16px;
                font-size: 0.82rem;
            }

            .article-page {
                padding-top: 62px;
            }

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

            .article-hero-summary {
                font-size: 0.98rem;
            }

            .article-body {
                padding-left: 0;
                padding-right: 0;
            }

            .article-content {
                font-size: 0.98rem;
            }

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

            .cta-panel {
                padding: 30px 24px;
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-panel-actions {
                width: 100%;
                flex-direction: column;
                gap: 12px;
            }

            .btn-create-group,
            .btn-join-group {
                width: 100%;
                text-align: center;
                justify-content: center;
            }

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

            .footer-col:last-child {
                grid-column: auto;
            }

            .sticky-bottom-inner {
                flex-direction: column;
                gap: 10px;
                align-items: flex-start;
            }

            .sticky-bottom-actions {
                width: 100%;
                justify-content: flex-start;
            }

            .btn-sticky-join,
            .btn-sticky-create {
                flex: 1;
                text-align: center;
            }

            .fab-cyber-neon {
                left: 12px;
                bottom: 80px;
                width: 50px;
                height: 50px;
                border-radius: 25px;
            }

            .fab-cyber-neon::before {
                border-radius: 25px;
            }
        }

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

            .navbar-brand {
                font-size: 0.95rem;
            }

            .navbar-brand .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 0.95rem;
            }

            .btn-login {
                padding: 6px 10px;
                font-size: 0.75rem;
            }

            .btn-signup {
                padding: 7px 12px;
                font-size: 0.75rem;
            }

            .article-hero h1 {
                font-size: 1.4rem;
            }

            .article-meta {
                gap: 12px;
                font-size: 0.8rem;
            }

            .article-category-badge {
                font-size: 0.72rem;
                padding: 5px 12px;
            }

            .cta-panel-info h2 {
                font-size: 1.35rem;
            }

            .cta-panel {
                padding: 24px 18px;
            }

            .related-card img {
                height: 140px;
            }

            .footer-brand h3 {
                font-size: 0.98rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-bg: #08090F;
            --color-navy: #0D111E;
            --color-electric: #0052FF;
            --color-cyan: #00F0FF;
            --color-silver: #CBD5E1;
            --color-white: #FFFFFF;
            --color-muted: #8B94A7;
            --color-glass-bg: rgba(13, 17, 30, 0.72);
            --color-glass-border: rgba(255, 255, 255, 0.08);
            --color-glass-highlight: rgba(255, 255, 255, 0.04);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-glow-blue: 0 0 20px rgba(0, 82, 255, 0.35), 0 0 60px rgba(0, 82, 255, 0.15);
            --shadow-glow-cyan: 0 0 20px rgba(0, 240, 255, 0.3), 0 0 60px rgba(0, 240, 255, 0.12);
            --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
            --font-line-height-body: 1.65;
            --font-line-height-heading: 1.25;
        }
        
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        body {
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: var(--color-bg);
            color: var(--color-white);
            line-height: var(--font-line-height-body);
            min-height: 100vh;
            overflow-x: hidden;
            padding-bottom: 72px;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
            transition: all var(--transition-base);
        }
        
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        
        /* ============ HEADER / NAV ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background var(--transition-base), border-color var(--transition-base);
        }
        
        .site-header.scrolled {
            background: rgba(5, 6, 12, 0.95);
            border-bottom-color: rgba(0, 240, 255, 0.15);
        }
        
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 14px 0;
            min-height: 64px;
        }
        
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.02rem;
            letter-spacing: -0.01em;
            color: var(--color-white);
            white-space: nowrap;
            flex-shrink: 0;
        }
        
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-electric), var(--color-cyan));
            color: #fff;
            font-size: 1rem;
            box-shadow: var(--shadow-glow-blue);
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }
        
        .nav-links a {
            position: relative;
            padding: 8px 14px;
            font-size: 0.86rem;
            font-weight: 500;
            color: var(--color-silver);
            border-radius: 8px;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }
        
        .nav-links a:hover {
            color: var(--color-white);
            background: rgba(255, 255, 255, 0.05);
        }
        
        .nav-links a.active {
            color: var(--color-cyan);
            background: rgba(0, 240, 255, 0.08);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.2);
        }
        
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--color-cyan);
            box-shadow: 0 0 8px rgba(0, 240, 255, 0.7);
        }
        
        .nav-auth {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        
        .btn-login {
            padding: 8px 16px;
            font-size: 0.84rem;
            font-weight: 600;
            color: var(--color-silver);
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: transparent;
            transition: all var(--transition-fast);
        }
        
        .btn-login:hover {
            color: var(--color-white);
            border-color: rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.05);
        }
        
        .btn-signup {
            padding: 8px 18px;
            font-size: 0.84rem;
            font-weight: 700;
            color: #fff;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--color-electric), #0036b0);
            box-shadow: var(--shadow-glow-blue);
            transition: all var(--transition-fast);
        }
        
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 28px rgba(0, 82, 255, 0.5), 0 0 70px rgba(0, 82, 255, 0.2);
            background: linear-gradient(135deg, #0058ff, #0040d0);
        }
        
        .btn-signup:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(0, 82, 255, 0.3);
        }
        
        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            font-size: 1.2rem;
            color: var(--color-silver);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition-fast);
        }
        
        .nav-toggle:hover {
            color: var(--color-white);
            background: rgba(255, 255, 255, 0.1);
        }
        
        /* Mobile nav */
        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 16px 20px 20px;
            background: rgba(8, 9, 15, 0.98);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        
        .mobile-nav.open {
            display: flex;
        }
        
        .mobile-nav a {
            padding: 12px 14px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-silver);
            border-radius: 8px;
            transition: all var(--transition-fast);
        }
        
        .mobile-nav a:hover {
            color: var(--color-white);
            background: rgba(255, 255, 255, 0.05);
        }
        
        .mobile-nav a.active {
            color: var(--color-cyan);
            background: rgba(0, 240, 255, 0.08);
        }
        
        .mobile-nav .nav-auth-mobile {
            display: flex;
            gap: 10px;
            padding-top: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        
        .mobile-nav .nav-auth-mobile button {
            flex: 1;
            padding: 10px 14px;
            font-size: 0.84rem;
            font-weight: 600;
            border-radius: 8px;
            text-align: center;
        }
        
        .mobile-nav .btn-login-mobile {
            color: var(--color-silver);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        
        .mobile-nav .btn-signup-mobile {
            color: #fff;
            background: linear-gradient(135deg, var(--color-electric), #0036b0);
        }
        
        /* ============ GLASS CARD UTILITY ============ */
        .glass-card {
            background: var(--color-glass-bg);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--color-glass-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-glass);
            transition: all var(--transition-base);
        }
        
        .glass-card:hover {
            border-color: rgba(0, 240, 255, 0.25);
            box-shadow: var(--shadow-glass), var(--shadow-glow-cyan);
        }
        
        /* ============ GLOW BUTTON ============ */
        .btn-glow {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 28px;
            font-size: 0.92rem;
            font-weight: 700;
            color: #fff;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--color-electric), #0036b0);
            box-shadow: var(--shadow-glow-blue);
            transition: all var(--transition-base);
            overflow: hidden;
        }
        
        .btn-glow::before {
            content: '';
            position: absolute;
            top: -2px;
            left: -2px;
            right: -2px;
            bottom: -2px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.6), rgba(0, 82, 255, 0.6));
            z-index: -1;
            filter: blur(12px);
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        
        .btn-glow:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(0, 82, 255, 0.55), 0 0 80px rgba(0, 82, 255, 0.25);
        }
        
        .btn-glow:hover::before {
            opacity: 1;
        }
        
        .btn-glow:active {
            transform: translateY(0);
            box-shadow: 0 0 14px rgba(0, 82, 255, 0.35);
        }
        
        .btn-glow-cyan {
            background: linear-gradient(135deg, #00a8b8, #0052a0);
            box-shadow: var(--shadow-glow-cyan);
        }
        
        .btn-glow-cyan:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.5), 0 0 80px rgba(0, 240, 255, 0.22);
        }
        
        .btn-outline-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 28px;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--color-cyan);
            border-radius: 12px;
            border: 1px solid rgba(0, 240, 255, 0.35);
            background: rgba(0, 240, 255, 0.05);
            transition: all var(--transition-base);
        }
        
        .btn-outline-glow:hover {
            color: #fff;
            border-color: var(--color-cyan);
            background: rgba(0, 240, 255, 0.15);
            box-shadow: var(--shadow-glow-cyan);
            transform: translateY(-1px);
        }
        
        /* ============ SECTION HEADING ============ */
        .section-heading {
            text-align: left;
            margin-bottom: 36px;
        }
        
        .section-heading .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-cyan);
            border-radius: 50px;
            border: 1px solid rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.06);
            margin-bottom: 14px;
        }
        
        .section-heading h2 {
            font-size: clamp(1.5rem, 3.5vw, 2.2rem);
            font-weight: 800;
            color: var(--color-white);
            line-height: var(--font-line-height-heading);
            letter-spacing: -0.02em;
            margin-bottom: 10px;
        }
        
        .section-heading p {
            font-size: 0.95rem;
            color: var(--color-muted);
            max-width: 650px;
            line-height: var(--font-line-height-body);
        }
        
        /* Section dividers */
        .section-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.2), transparent);
            margin: 0 0 44px;
        }
        
        /* ============ ASYMMETRIC ROWS ============ */
        .asym-row {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
            align-items: center;
        }
        
        .asym-row.reverse {
            grid-template-columns: 0.9fr 1.1fr;
        }
        
        .asym-row .text-col {
            text-align: left;
        }
        
        .asym-row .text-col h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        
        .asym-row .text-col p {
            font-size: 0.9rem;
            color: var(--color-muted);
            line-height: var(--font-line-height-body);
            margin-bottom: 16px;
        }
        
        .asym-row .text-col ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        
        .asym-row .text-col ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.86rem;
            color: var(--color-silver);
        }
        
        .asym-row .text-col ul li i {
            color: var(--color-cyan);
            font-size: 0.9rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
        
        .asym-row .media-col {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            min-height: 280px;
            background: rgba(13, 17, 30, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        
        .asym-row .media-col img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
        }
        
        .asym-row .media-col .media-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 30px 24px 20px;
            background: linear-gradient(transparent, rgba(5, 6, 12, 0.9));
            z-index: 2;
        }
        
        .asym-row .media-col .media-overlay span {
            display: inline-block;
            padding: 4px 12px;
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: #fff;
            border-radius: 50px;
            background: rgba(0, 240, 255, 0.2);
            border: 1px solid rgba(0, 240, 255, 0.4);
        }
        
        /* ============ STATS ROW ============ */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        
        .stat-card {
            padding: 22px 18px;
            border-radius: var(--radius-md);
            background: rgba(13, 17, 30, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.06);
            text-align: left;
            transition: all var(--transition-base);
        }
        
        .stat-card:hover {
            border-color: rgba(0, 240, 255, 0.2);
            box-shadow: var(--shadow-glow-cyan);
            transform: translateY(-2px);
        }
        
        .stat-card .stat-number {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--color-cyan);
            line-height: 1.2;
            letter-spacing: -0.02em;
            display: block;
            margin-bottom: 6px;
        }
        
        .stat-card .stat-label {
            font-size: 0.8rem;
            color: var(--color-muted);
            font-weight: 500;
        }
        
        /* ============ FAQ ============ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        
        .faq-item {
            border-radius: var(--radius-md);
            background: rgba(13, 17, 30, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition-base);
            overflow: hidden;
        }
        
        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.15);
        }
        
        .faq-item.open {
            border-color: rgba(0, 240, 255, 0.3);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.08);
        }
        
        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-white);
            text-align: left;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        
        .faq-question:hover {
            color: var(--color-cyan);
        }
        
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 0.9rem;
            color: var(--color-cyan);
            transition: transform var(--transition-base);
        }
        
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
        }
        
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        
        .faq-answer p {
            font-size: 0.84rem;
            color: var(--color-muted);
            line-height: var(--font-line-height-body);
        }
        
        /* ============ FOOTER ============ */
        .site-footer {
            background: rgba(5, 6, 12, 0.9);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 50px 0 30px;
            margin-top: 60px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        
        .footer-brand h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 12px;
            line-height: 1.4;
        }
        
        .footer-brand p {
            font-size: 0.82rem;
            color: var(--color-muted);
            line-height: 1.6;
        }
        
        .footer-col h4 {
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: var(--color-silver);
            margin-bottom: 16px;
        }
        
        .footer-col ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        
        .footer-col ul li a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--color-muted);
            transition: all var(--transition-fast);
        }
        
        .footer-col ul li a:hover {
            color: var(--color-cyan);
            transform: translateX(3px);
        }
        
        .footer-col ul li a i {
            font-size: 0.65rem;
            color: var(--color-cyan);
        }
        
        .footer-bottom {
            padding-top: 22px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.75rem;
            color: rgba(139, 148, 167, 0.7);
            text-align: left;
        }
        
        /* ============ FAB ============ */
        .fab-cyber {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            font-size: 1.25rem;
            color: #fff;
            background: rgba(8, 9, 15, 0.75);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.75), rgba(8, 9, 15, 0.75)), linear-gradient(135deg, var(--color-cyan), var(--color-electric));
            background-origin: padding-box, border-box;
            background-clip: padding-box, border-box;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
            cursor: pointer;
            transition: all var(--transition-base);
            animation: fab-breathe 3s ease-in-out infinite;
        }
        
        .fab-cyber:hover {
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.6), 0 0 70px rgba(0, 240, 255, 0.25);
            animation-play-state: paused;
        }
        
        .fab-cyber:active {
            transform: scale(0.95);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
        }
        
        @keyframes fab-breathe {
            0%, 100% {
                opacity: 0.6;
                box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
            }
            50% {
                opacity: 1;
                box-shadow: 0 0 22px rgba(0, 240, 255, 0.45);
            }
        }
        
        .fab-cyber .fab-dot {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #ff007f;
            box-shadow: 0 0 10px rgba(255, 0, 127, 0.8);
            animation: fab-dot-blink 1.2s ease-in-out infinite;
        }
        
        @keyframes fab-dot-blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        
        /* ============ BOTTOM CONVERSION BAR ============ */
        .bottom-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 45;
            background: rgba(5, 6, 12, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            padding: 12px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        
        .bottom-cta-bar .cta-text {
            font-size: 0.84rem;
            font-weight: 500;
            color: var(--color-silver);
            flex: 1;
        }
        
        .bottom-cta-bar .cta-text strong {
            color: var(--color-cyan);
            font-weight: 700;
        }
        
        .bottom-cta-bar .cta-buttons {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        
        .bottom-cta-bar .cta-buttons button {
            padding: 10px 20px;
            font-size: 0.8rem;
            font-weight: 700;
            border-radius: 8px;
            white-space: nowrap;
        }
        
        .bottom-cta-bar .btn-cta-outline {
            color: var(--color-cyan);
            border: 1px solid rgba(0, 240, 255, 0.35);
            background: transparent;
        }
        
        .bottom-cta-bar .btn-cta-outline:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--color-cyan);
        }
        
        .bottom-cta-bar .btn-cta-solid {
            color: #fff;
            background: linear-gradient(135deg, var(--color-electric), #0036b0);
            box-shadow: var(--shadow-glow-blue);
        }
        
        .bottom-cta-bar .btn-cta-solid:hover {
            box-shadow: 0 0 22px rgba(0, 82, 255, 0.55);
            transform: translateY(-1px);
        }
        
        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 8px 10px;
                font-size: 0.8rem;
            }
            .asym-row,
            .asym-row.reverse {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .asym-row .media-col {
                min-height: 240px;
                order: -1;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-auth {
                display: none;
            }
            .navbar {
                padding: 10px 0;
                min-height: 56px;
            }
            .navbar-brand {
                font-size: 0.9rem;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }
            .section-heading h2 {
                font-size: 1.45rem;
            }
            .glass-card {
                border-radius: var(--radius-md);
            }
            .bottom-cta-bar {
                flex-direction: column;
                align-items: stretch;
                padding: 10px 14px;
                gap: 8px;
            }
            .bottom-cta-bar .cta-text {
                font-size: 0.75rem;
                text-align: center;
            }
            .bottom-cta-bar .cta-buttons {
                justify-content: center;
            }
            .bottom-cta-bar .cta-buttons button {
                flex: 1;
                font-size: 0.75rem;
                padding: 8px 12px;
            }
            .fab-cyber {
                width: 46px;
                height: 46px;
                font-size: 1.1rem;
                left: 12px;
                bottom: 82px;
            }
            body {
                padding-bottom: 90px;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 16px 14px;
            }
            .stat-card .stat-number {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .bottom-cta-bar .cta-buttons {
                flex-direction: column;
            }
            .asym-row .media-col {
                min-height: 180px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #08090F;
            --bg-navy: #0D111E;
            --bg-card: #111827;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-cyan-soft: rgba(0, 240, 255, 0.08);
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-silver-2: #94A3B8;
            --text-silver-3: #64748B;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
            --shadow-custom: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-glow-blue: 0 0 20px rgba(0, 82, 255, 0.45);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
            --font-display: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            background: var(--bg-deep);
            color: var(--text-white);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            transition: all var(--transition-base);
        }
        button:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul, ol {
            list-style: none;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
            transition: background var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.45);
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 14px 0;
            min-height: 68px;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.15rem;
            letter-spacing: -0.02em;
            color: var(--text-white);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .navbar-brand:hover {
            color: var(--text-white);
            opacity: 0.9;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 10px;
            font-size: 1rem;
            color: #fff;
            box-shadow: 0 4px 14px rgba(0, 82, 255, 0.35);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-md);
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-silver);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links a.active {
            color: var(--accent-cyan);
            background: var(--accent-cyan-soft);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.18);
            font-weight: 600;
        }
        .nav-auth {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-login {
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-size: 0.875rem;
            font-weight: 500;
            background: transparent;
            color: var(--text-silver);
            border: 1px solid rgba(255, 255, 255, 0.14);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.04);
        }
        .btn-signup {
            padding: 8px 22px;
            border-radius: var(--radius-md);
            font-size: 0.875rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            box-shadow: 0 4px 14px rgba(0, 82, 255, 0.3);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(0, 82, 255, 0.45);
            background: linear-gradient(135deg, #0a5cff, var(--accent-cyan));
        }
        .btn-signup:active {
            transform: translateY(0);
        }
        .nav-toggle {
            display: none;
            background: transparent;
            color: var(--text-white);
            font-size: 1.3rem;
            padding: 8px 10px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .nav-toggle:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

        /* ===== Glass Card ===== */
        .glass-card {
            background: rgba(17, 24, 39, 0.65);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(0, 240, 255, 0.08);
            border-radius: var(--radius-lg);
            transition: all var(--transition-base);
        }
        .glass-card:hover {
            border-color: rgba(0, 240, 255, 0.22);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.3), 0 0 20px rgba(0, 240, 255, 0.06);
        }

        /* ===== Buttons ===== */
        .btn-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--accent-blue) 0%, #0a5cff 40%, var(--accent-cyan) 100%);
            color: #fff;
            box-shadow: 0 6px 20px rgba(0, 82, 255, 0.35), 0 0 10px rgba(0, 240, 255, 0.15);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .btn-glow::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -60%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.18) 0%, transparent 60%);
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .btn-glow:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 82, 255, 0.5), 0 0 24px rgba(0, 240, 255, 0.25);
            background: linear-gradient(135deg, #0a5cff 0%, var(--accent-cyan) 100%);
        }
        .btn-glow:hover::before {
            opacity: 1;
        }
        .btn-glow:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(0, 82, 255, 0.35);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            background: transparent;
            color: var(--text-silver);
            border: 1px solid rgba(255, 255, 255, 0.18);
            transition: all var(--transition-fast);
        }
        .btn-outline:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }

        /* ===== Hero ===== */
        .hero {
            padding-top: 140px;
            padding-bottom: 70px;
            background: linear-gradient(180deg, rgba(13, 17, 30, 0.92) 0%, rgba(8, 9, 15, 0.98) 40%, var(--bg-deep) 100%);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -15%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.18) 0%, transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.1) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 56px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-title {
            font-family: var(--font-display);
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.03em;
            color: var(--text-white);
            margin-bottom: 20px;
        }
        .hero-title .highlight {
            background: linear-gradient(120deg, var(--accent-cyan), #00b8ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 1.1rem;
            line-height: 1.7;
            color: var(--text-silver);
            margin-bottom: 28px;
            max-width: 540px;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-silver-2);
        }
        .hero-meta-item i {
            color: var(--accent-cyan);
            font-size: 0.95rem;
        }
        .hero-right {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .progress-ring-wrap {
            background: rgba(17, 24, 39, 0.7);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-xl);
            padding: 24px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 14px;
            box-shadow: var(--shadow-custom);
        }
        .progress-ring-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-silver);
            text-align: center;
        }
        .progress-ring-value {
            font-family: var(--font-display);
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.02em;
        }
        .progress-ring-sub {
            font-size: 0.8rem;
            color: var(--text-silver-3);
            text-align: center;
        }
        .tier-preview {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 12px;
        }
        .tier-item {
            background: rgba(17, 24, 39, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 16px 14px;
            text-align: center;
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .tier-item:hover {
            border-color: rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.04);
            transform: translateY(-2px);
        }
        .tier-item i {
            font-size: 1.5rem;
            color: var(--accent-cyan);
            margin-bottom: 8px;
            display: block;
        }
        .tier-item span {
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--text-silver);
        }
        .tier-item small {
            display: block;
            font-size: 0.7rem;
            color: var(--text-silver-3);
            margin-top: 4px;
        }

        /* ===== Section Common ===== */
        .section {
            padding: 70px 0;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            background: var(--accent-cyan-soft);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.18);
            margin-bottom: 14px;
        }
        .section-title {
            font-family: var(--font-display);
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.02em;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-silver-2);
            max-width: 640px;
        }

        /* ===== Benefits ===== */
        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .benefit-item {
            padding: 28px 24px;
            border-radius: var(--radius-lg);
            background: rgba(17, 24, 39, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition-base);
            text-align: left;
        }
        .benefit-item:hover {
            border-color: rgba(0, 240, 255, 0.2);
            background: rgba(17, 24, 39, 0.75);
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
        }
        .benefit-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 12px;
            font-size: 1.2rem;
            color: #fff;
            margin-bottom: 16px;
            box-shadow: 0 6px 16px rgba(0, 82, 255, 0.3);
        }
        .benefit-item h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }
        .benefit-item p {
            font-size: 0.9rem;
            line-height: 1.65;
            color: var(--text-silver-2);
        }

        /* ===== Scene ===== */
        .scene-section {
            background: rgba(13, 17, 30, 0.6);
            border-top: 1px solid rgba(0, 240, 255, 0.06);
            border-bottom: 1px solid rgba(0, 240, 255, 0.06);
        }
        .scene-grid {
            display: grid;
            grid-template-columns: 0.85fr 1.15fr;
            gap: 48px;
            align-items: center;
        }
        .scene-image {
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, 0.12);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
            position: relative;
        }
        .scene-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .scene-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 50%;
            background: linear-gradient(180deg, transparent 0%, rgba(8, 9, 15, 0.6) 100%);
            pointer-events: none;
        }
        .scene-content h3 {
            font-family: var(--font-display);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .scene-content p {
            font-size: 0.95rem;
            line-height: 1.7;
            color: var(--text-silver-2);
            margin-bottom: 18px;
        }
        .scene-steps {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 20px;
        }
        .scene-step {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 14px 18px;
            background: rgba(17, 24, 39, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
        }
        .scene-step:hover {
            border-color: rgba(0, 240, 255, 0.16);
        }
        .scene-step-num {
            flex-shrink: 0;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            font-weight: 700;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(0, 82, 255, 0.3);
        }
        .scene-step-content h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 3px;
        }
        .scene-step-content p {
            font-size: 0.85rem;
            color: var(--text-silver-2);
            margin-bottom: 0;
        }

        /* ===== Social Proof ===== */
        .social-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .social-item {
            padding: 24px 20px;
            text-align: left;
            border-radius: var(--radius-md);
            background: rgba(17, 24, 39, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: all var(--transition-fast);
        }
        .social-item:hover {
            border-color: rgba(0, 240, 255, 0.16);
            background: rgba(17, 24, 39, 0.7);
        }
        .social-stars {
            color: #FFD700;
            font-size: 0.9rem;
            margin-bottom: 10px;
            letter-spacing: 1px;
        }
        .social-item blockquote {
            font-size: 0.9rem;
            line-height: 1.65;
            color: var(--text-silver);
            margin-bottom: 12px;
            font-style: italic;
        }
        .social-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .social-author-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            color: #fff;
            flex-shrink: 0;
        }
        .social-author-info span {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-white);
        }
        .social-author-info small {
            font-size: 0.75rem;
            color: var(--text-silver-3);
        }

        /* ===== Stats ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 36px;
            padding: 24px 20px;
            background: rgba(17, 24, 39, 0.5);
            border: 1px solid rgba(0, 240, 255, 0.08);
            border-radius: var(--radius-lg);
        }
        .stat-item {
            text-align: center;
        }
        .stat-item strong {
            display: block;
            font-family: var(--font-display);
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: -0.02em;
        }
        .stat-item span {
            display: block;
            font-size: 0.8rem;
            color: var(--text-silver-2);
            margin-top: 4px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: rgba(13, 17, 30, 0.55);
            border-top: 1px solid rgba(0, 240, 255, 0.06);
            border-bottom: 1px solid rgba(0, 240, 255, 0.06);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: rgba(17, 24, 39, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.16);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            background: transparent;
            text-align: left;
            width: 100%;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-question i {
            flex-shrink: 0;
            color: var(--text-silver-3);
            transition: all var(--transition-fast);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow);
            padding: 0 20px;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--accent-cyan);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: var(--text-silver-2);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 50px 0;
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.14) 0%, rgba(0, 240, 255, 0.08) 50%, rgba(17, 24, 39, 0.6) 100%);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-xl);
            padding: 44px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
        }
        .cta-box-content h3 {
            font-family: var(--font-display);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
            letter-spacing: -0.02em;
        }
        .cta-box-content p {
            font-size: 0.95rem;
            color: var(--text-silver-2);
            max-width: 480px;
            line-height: 1.7;
        }
        .cta-box-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            flex-shrink: 0;
        }

        /* ===== Sticky Bottom Bar ===== */
        .sticky-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 90;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(18px);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding: 12px 0;
            transform: translateY(100%);
            transition: transform var(--transition-base);
        }
        .sticky-bar.visible {
            transform: translateY(0);
        }
        .sticky-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .sticky-bar-text {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .sticky-bar-text i {
            font-size: 1.4rem;
            color: var(--accent-cyan);
        }
        .sticky-bar-text span {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-white);
        }
        .sticky-bar-text small {
            display: block;
            font-size: 0.75rem;
            color: var(--text-silver-3);
        }
        .sticky-bar-actions {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
        }

        /* ===== FAB ===== */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 95;
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--accent-cyan);
            cursor: pointer;
            opacity: 0.6;
            transition: all var(--transition-base);
            animation: fabBreathe 3.5s ease-in-out infinite;
        }
        .fab::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 18px;
            padding: 2px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue), var(--accent-cyan));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
            animation: fabBorderGlow 3s ease-in-out infinite;
        }
        .fab:hover {
            opacity: 1;
            transform: scale(1.08);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
        }
        .fab:active {
            transform: scale(0.96);
        }
        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #FF007F;
            box-shadow: 0 0 10px rgba(255, 0, 127, 0.7);
            animation: fabDot 2s ease-in-out infinite;
        }
        @keyframes fabBreathe {
            0%, 100% { opacity: 0.6; }
            50% { opacity: 0.85; }
        }
        @keyframes fabBorderGlow {
            0%, 100% { filter: brightness(1); }
            50% { filter: brightness(1.6); }
        }
        @keyframes fabDot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.7); }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: rgba(8, 9, 15, 0.92);
            border-top: 1px solid rgba(0, 240, 255, 0.06);
            padding: 50px 0 24px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 0.8fr 0.8fr 0.8fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-brand h3 {
            font-family: var(--font-display);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            color: var(--text-silver-2);
            max-width: 380px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 0.85rem;
            color: var(--text-silver-2);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition-fast);
        }
        .footer-col ul a:hover {
            color: var(--accent-cyan);
            transform: translateX(3px);
        }
        .footer-col ul a i {
            font-size: 0.7rem;
            color: var(--text-silver-3);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 18px;
            text-align: center;
        }
        .footer-bottom span {
            font-size: 0.78rem;
            color: var(--text-silver-3);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .benefits-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .social-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .scene-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 900px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.97);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid rgba(0, 240, 255, 0.1);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .nav-auth {
                display: none;
            }
            .nav-auth.mobile-visible {
                display: flex;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.97);
                padding: 16px 24px;
                border-bottom: 1px solid rgba(0, 240, 255, 0.1);
                justify-content: stretch;
                gap: 10px;
            }
            .nav-auth.mobile-visible .btn-login,
            .nav-auth.mobile-visible .btn-signup {
                flex: 1;
                text-align: center;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }
        @media (max-width: 768px) {
            .hero {
                padding-top: 110px;
                padding-bottom: 48px;
            }
            .hero-title {
                font-size: 1.75rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .benefits-grid {
                grid-template-columns: 1fr;
            }
            .social-grid {
                grid-template-columns: 1fr;
            }
            .tier-preview {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .cta-box {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
            }
            .cta-box-content p {
                max-width: 100%;
            }
            .cta-box-actions {
                justify-content: center;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .sticky-bar-inner {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
            .sticky-bar-text {
                justify-content: center;
            }
            .fab {
                width: 46px;
                height: 46px;
                bottom: 80px;
                left: 12px;
                font-size: 1.1rem;
                border-radius: 14px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-glow,
            .hero-actions .btn-outline {
                justify-content: center;
                text-align: center;
            }
            .hero-meta {
                gap: 14px;
            }
            .btn-signup, .btn-login {
                font-size: 0.8rem;
                padding: 8px 14px;
            }
            .progress-ring-value {
                font-size: 2rem;
            }
            .faq-question {
                font-size: 0.85rem;
                padding: 14px 16px;
            }
            .faq-answer p {
                font-size: 0.82rem;
            }
            .cta-box {
                padding: 24px 18px;
                border-radius: var(--radius-lg);
            }
            .cta-box-actions {
                flex-direction: column;
                width: 100%;
            }
            .cta-box-actions .btn-glow,
            .cta-box-actions .btn-outline {
                justify-content: center;
                text-align: center;
                width: 100%;
            }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(0, 240, 255, 0.3);
            --glass-shadow: 0 8px 32px rgba(0, 82, 255, 0.2);
            --radius: 1rem;
            --radius-sm: 0.5rem;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        
        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            padding: 1rem 0;
        }
        
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
        }
        
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            text-decoration: none;
            color: var(--text-white);
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 12px;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            color: #fff;
            font-size: 1.2rem;
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.25rem;
        }
        
        .nav-links a {
            color: var(--text-silver);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.5rem 0;
            position: relative;
            transition: var(--transition);
            white-space: nowrap;
        }
        
        .nav-links a:hover {
            color: #fff;
        }
        
        .nav-links a.active {
            color: #fff;
        }
        
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-cyan);
        }
        
        .nav-auth {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        
        .btn-login {
            background: transparent;
            border: 1px solid rgba(255,255,255,0.25);
            color: #fff;
            padding: 0.55rem 1.25rem;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .btn-login:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
        }
        
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 0.55rem 1.25rem;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(0, 82, 255, 0.4);
            transition: var(--transition);
        }
        
        .btn-signup:hover {
            box-shadow: 0 6px 20px rgba(0, 240, 255, 0.5);
            transform: translateY(-1px);
        }
        
        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        /* ===== Hero ===== */
        .hero {
            padding-top: 8rem;
            padding-bottom: 5rem;
            position: relative;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8,9,15,0.95) 0%, rgba(13,17,30,0.85) 40%, rgba(0,82,255,0.4) 100%);
            z-index: 1;
        }
        
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        
        .hero-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.15);
            border: 1px solid rgba(0, 240, 255, 0.4);
            color: var(--accent-cyan);
            padding: 0.5rem 1rem;
            border-radius: 9999px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            letter-spacing: 0.5px;
        }
        
        .hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            color: #fff;
        }
        
        .hero h1 span {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        
        .hero p {
            font-size: 1.2rem;
            color: var(--text-silver);
            margin-bottom: 2rem;
            max-width: 650px;
        }
        
        .hero-list {
            list-style: none;
            margin-bottom: 2.5rem;
        }
        
        .hero-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            margin-bottom: 0.75rem;
            color: var(--text-silver);
        }
        
        .hero-list i {
            color: var(--accent-cyan);
            margin-top: 0.25rem;
        }
        
        .hero-cta {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2rem;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            padding: 0.85rem 2rem;
            border-radius: 9999px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            box-shadow: 0 4px 20px rgba(0, 82, 255, 0.5);
            transition: var(--transition);
        }
        
        .btn-primary:hover {
            box-shadow: 0 8px 30px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
        }
        
        .btn-secondary {
            background: rgba(255,255,255,0.1);
            color: #fff;
            padding: 0.85rem 2rem;
            border-radius: 9999px;
            font-weight: 700;
            font-size: 1rem;
            border: 1px solid rgba(255,255,255,0.25);
            cursor: pointer;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            backdrop-filter: blur(10px);
            transition: var(--transition);
        }
        
        .btn-secondary:hover {
            background: rgba(255,255,255,0.2);
            border-color: var(--accent-cyan);
        }
        
        .trust-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            align-items: center;
        }
        
        .trust-strip span {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            color: var(--text-silver);
            font-size: 0.9rem;
            font-weight: 500;
        }
        
        .trust-strip i {
            color: var(--accent-cyan);
        }
        
        /* ===== Sections ===== */
        .section {
            padding: 4rem 0;
        }
        
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        
        .section-subtitle {
            color: var(--text-silver);
            font-size: 1.1rem;
            margin-bottom: 2.5rem;
        }
        
        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius);
            box-shadow: var(--glass-shadow);
            padding: 1.5rem;
            transition: var(--transition);
        }
        
        .glass-card:hover {
            border-color: rgba(0, 240, 255, 0.6);
            box-shadow: 0 8px 40px rgba(0, 82, 255, 0.3);
            transform: translateY(-4px);
        }
        
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        
        .feature-icon {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, rgba(0,82,255,0.3), rgba(0,240,255,0.3));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            color: #fff;
            font-size: 1.3rem;
        }
        
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        
        .feature-card p {
            color: var(--text-silver);
            font-size: 0.95rem;
        }
        
        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        
        .step-item {
            text-align: left;
            position: relative;
        }
        
        .step-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            margin-bottom: 0.5rem;
        }
        
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        
        .step-item p {
            color: var(--text-silver);
            font-size: 0.95rem;
        }
        
        /* ===== Image content ===== */
        .image-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        
        .image-content img {
            width: 100%;
            height: auto;
            border-radius: var(--radius);
            border: 1px solid rgba(0, 240, 255, 0.2);
            box-shadow: 0 0 30px rgba(0, 82, 255, 0.3);
        }
        
        /* ===== Social proof ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-top: 2rem;
        }
        
        .stat-card {
            text-align: center;
            padding: 2rem 1rem;
        }
        
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.25rem;
        }
        
        .stat-label {
            color: var(--text-silver);
            font-size: 0.95rem;
        }
        
        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .faq-item {
            margin-bottom: 1rem;
            border-radius: var(--radius);
            overflow: hidden;
        }
        
        .faq-question {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            padding: 1rem 1.5rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: #fff;
            transition: var(--transition);
        }
        
        .faq-question:hover {
            background: rgba(0, 240, 255, 0.1);
        }
        
        .faq-question i {
            transition: var(--transition);
        }
        
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        
        .faq-answer {
            background: rgba(0,0,0,0.3);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-top: none;
            padding: 0 1.5rem;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--text-silver);
        }
        
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 1rem 1.5rem;
        }
        
        /* ===== Final CTA ===== */
        .final-cta {
            background: linear-gradient(135deg, rgba(0,82,255,0.2), rgba(0,240,255,0.2));
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius);
            padding: 3rem 2rem;
            text-align: center;
        }
        
        /* ===== Sticky bottom bar ===== */
        .sticky-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            z-index: 90;
            background: rgba(8, 9, 15, 0.95);
            backdrop-filter: blur(12px);
            border-top: 1px solid rgba(0, 240, 255, 0.25);
            padding: 0.75rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        
        .sticky-bottom-bar p {
            color: #fff;
            margin: 0;
            font-weight: 600;
            font-size: 0.95rem;
        }
        
        .sticky-bottom-bar .btn-primary {
            padding: 0.5rem 1.25rem;
            font-size: 0.9rem;
        }
        
        /* ===== Footer ===== */
        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            padding: 4rem 0 2rem;
            margin-top: 2rem;
            position: relative;
            z-index: 5;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        
        .footer-brand h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: #fff;
        }
        
        .footer-brand p {
            color: var(--text-silver);
            font-size: 0.9rem;
            max-width: 400px;
        }
        
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
        }
        
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        
        .footer-col li {
            margin-bottom: 0.75rem;
        }
        
        .footer-col a {
            color: var(--text-silver);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        
        .footer-col a:hover {
            color: var(--accent-cyan);
        }
        
        .footer-col i {
            font-size: 0.8rem;
            color: var(--accent-cyan);
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            padding-top: 1.5rem;
            text-align: center;
            color: var(--text-silver);
            font-size: 0.85rem;
        }
        
        /* ===== FAB ===== */
        .fab {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 95;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0,0,0,0.6);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(0, 240, 255, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: var(--transition);
            animation: neonPulse 2s infinite alternate;
        }
        
        .fab:hover {
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.8);
            opacity: 1;
        }
        
        .fab i {
            color: #fff;
            font-size: 1.5rem;
        }
        
        @keyframes neonPulse {
            0% { box-shadow: 0 0 15px rgba(0, 240, 255, 0.5); }
            100% { box-shadow: 0 0 25px rgba(0, 82, 255, 0.8); }
        }
        
        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.98);
                flex-direction: column;
                align-items: flex-start;
                padding: 1.5rem;
                gap: 1rem;
                border-bottom: 1px solid rgba(0, 240, 255, 0.2);
                transform: translateY(-150%);
                transition: transform 0.3s ease;
                z-index: 99;
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .nav-toggle {
                display: block;
            }
            .nav-auth {
                display: flex;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .feature-grid,
            .steps-grid,
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .image-content {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .sticky-bottom-bar {
                flex-direction: column;
                text-align: center;
                padding: 0.5rem 1rem;
            }
            .fab {
                bottom: 5rem;
                left: 0.75rem;
                width: 48px;
                height: 48px;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding: 0 1rem;
            }
            .hero {
                padding-top: 6rem;
                padding-bottom: 3rem;
            }
            .hero h1 {
                font-size: 1.65rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .btn-primary,
            .btn-secondary {
                padding: 0.7rem 1.5rem;
                font-size: 0.9rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .navbar-brand {
                font-size: 1rem;
            }
            .nav-auth .btn-login,
            .nav-auth .btn-signup {
                padding: 0.4rem 0.75rem;
                font-size: 0.8rem;
            }
        }