/* roulang page: index */
:root {
            --bg-deep: #0B1A30;
            --bg-mid: #0F0C20;
            --bg-card: #131B30;
            --bg-card-hover: #18233D;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #7C8494;
            --border-glow: rgba(0, 240, 255, 0.35);
            --border-lime: rgba(204, 255, 0, 0.5);
            --border-subtle: rgba(255, 255, 255, 0.08);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-lime: 0 0 12px rgba(204, 255, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --space-1: 4px;
            --space-2: 8px;
            --space-3: 16px;
            --space-4: 24px;
            --space-5: 32px;
            --space-6: 48px;
            --space-7: 64px;
            --space-8: 96px;
            --font-base: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-base);
            background-color: var(--bg-deep);
            color: var(--text-white);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        button {
            font-family: inherit;
            transition: var(--transition);
        }

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin-top: 0;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-white);
        }

        p {
            margin-bottom: 1rem;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: var(--space-4);
            padding-right: var(--space-4);
        }

        .section {
            padding: var(--space-7) 0;
        }

        .section-sm {
            padding: var(--space-5) 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: var(--space-3);
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-silver);
            margin-bottom: var(--space-5);
            max-width: 720px;
            line-height: 1.65;
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--accent-lime) 0%, var(--accent-cyan) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 100px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            text-transform: uppercase;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.25);
        }

        .badge-hot {
            background: rgba(255, 0, 127, 0.15);
            color: var(--accent-pink);
            border: 1px solid rgba(255, 0, 127, 0.35);
        }

        .badge-lime {
            background: rgba(204, 255, 0, 0.12);
            color: var(--accent-lime);
            border: 1px solid rgba(204, 255, 0, 0.3);
        }

        /* NAVBAR */
        .navbar-main {
            background: rgba(11, 26, 48, 0.9);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
        }

        .navbar-main .navbar-brand {
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .navbar-main .navbar-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-deep);
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .navbar-main .nav-link {
            color: var(--text-silver);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 8px 16px !important;
            border-radius: 8px;
            margin: 0 2px;
            position: relative;
        }

        .navbar-main .nav-link:hover,
        .navbar-main .nav-link:focus {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.05);
        }

        .navbar-main .nav-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--border-subtle);
            color: var(--text-white);
            padding: 8px 20px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .btn-login:hover,
        .btn-login:focus {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            border: none;
            color: var(--bg-deep);
            padding: 8px 24px;
            border-radius: 100px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 4px 18px rgba(0, 240, 255, 0.25);
        }

        .btn-signup:hover,
        .btn-signup:focus {
            box-shadow: var(--shadow-neon);
            transform: translateY(-2px);
            color: var(--bg-deep);
        }

        .navbar-toggler {
            border: 1px solid var(--border-subtle);
            padding: 8px 10px;
            border-radius: 8px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            border-color: var(--accent-cyan);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 255, 255, 0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* HERO */
        .hero {
            position: relative;
            padding: var(--space-8) 0 var(--space-7);
            background: linear-gradient(180deg, #0F0C20 0%, #0B1A30 100%);
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            top: -20%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: "";
            position: absolute;
            bottom: -15%;
            left: -8%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(204, 255, 0, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.2;
            margin-bottom: var(--space-4);
        }

        .hero-description {
            font-size: 1.1rem;
            color: var(--text-silver);
            max-width: 680px;
            line-height: 1.7;
            margin-bottom: var(--space-5);
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-4);
            align-items: center;
            margin-top: var(--space-4);
        }

        .hero-stat {
            display: flex;
            align-items: center;
            gap: 12px;
            background: rgba(255, 255, 255, 0.04);
            padding: 12px 18px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
        }

        .hero-stat .stat-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-cyan);
        }

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

        .hero-visual {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        /* BUTTONS */
        .btn-primary-custom {
            background: linear-gradient(135deg, var(--accent-lime) 0%, #A8FF00 50%, var(--accent-cyan) 100%);
            border: none;
            color: var(--bg-deep);
            font-weight: 700;
            padding: 14px 32px;
            border-radius: 100px;
            font-size: 1rem;
            letter-spacing: 0.01em;
            box-shadow: 0 6px 24px rgba(204, 255, 0, 0.3);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            box-shadow: 0 8px 32px rgba(0, 240, 255, 0.45);
            transform: translateY(-3px);
            color: var(--bg-deep);
        }

        .btn-secondary-custom {
            background: transparent;
            border: 1px solid var(--border-glow);
            color: var(--accent-cyan);
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 100px;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

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

        .btn-pink {
            background: linear-gradient(135deg, var(--accent-pink), #FF3D9A);
            border: none;
            color: var(--text-white);
            font-weight: 700;
            padding: 14px 32px;
            border-radius: 100px;
            box-shadow: 0 6px 24px rgba(255, 0, 127, 0.35);
        }

        .btn-pink:hover,
        .btn-pink:focus {
            box-shadow: 0 8px 32px rgba(255, 0, 127, 0.55);
            transform: translateY(-3px);
            color: var(--text-white);
        }

        /* CARDS */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: var(--space-4);
            transition: var(--transition);
            height: 100%;
        }

        .card-custom:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-neon);
            transform: translateY(-4px);
        }

        .card-custom .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: var(--space-2);
        }

        .card-custom .card-text {
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.65;
        }

        .icon-box {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: var(--space-3);
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .icon-box.lime {
            background: rgba(204, 255, 0, 0.1);
            color: var(--accent-lime);
            border-color: rgba(204, 255, 0, 0.25);
        }

        .icon-box.pink {
            background: rgba(255, 0, 127, 0.1);
            color: var(--accent-pink);
            border-color: rgba(255, 0, 127, 0.25);
        }

        /* PROMO LADDER */
        .promo-step {
            display: flex;
            align-items: flex-start;
            gap: var(--space-4);
            padding: var(--space-4);
            background: rgba(255, 255, 255, 0.02);
            border-radius: var(--radius-md);
            border-left: 4px solid var(--accent-cyan);
            transition: var(--transition);
        }

        .promo-step:hover {
            background: rgba(0, 240, 255, 0.05);
        }

        .promo-step .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            color: var(--bg-deep);
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .promo-step h4 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }

        .promo-step p {
            color: var(--text-silver);
            font-size: 0.95rem;
            margin-bottom: 0;
        }

        /* TABLE COMPARE */
        .compare-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }

        .compare-table th,
        .compare-table td {
            padding: 18px 24px;
            text-align: left;
            border-bottom: 1px solid var(--border-subtle);
            font-size: 0.95rem;
        }

        .compare-table th {
            background: rgba(255, 255, 255, 0.04);
            font-weight: 700;
            color: var(--text-white);
            font-size: 1rem;
        }

        .compare-table td {
            color: var(--text-silver);
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .compare-table .highlight-col {
            background: rgba(0, 240, 255, 0.06);
            border-left: 2px solid var(--accent-cyan);
        }

        /* TRUST BAR */
        .trust-bar {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.05), rgba(204, 255, 0, 0.05));
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: var(--space-4) 0;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text-white);
        }

        .trust-item i {
            font-size: 1.5rem;
            color: var(--accent-cyan);
        }

        /* NEWS LIST */
        .news-list-item {
            display: flex;
            gap: var(--space-4);
            padding: var(--space-3) 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition);
            align-items: center;
        }

        .news-list-item:hover {
            background: rgba(255, 255, 255, 0.02);
            padding-left: var(--space-2);
        }

        .news-list-item .news-date {
            min-width: 80px;
            font-size: 0.85rem;
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .news-list-item .news-title {
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-white);
        }

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

        .news-sidebar {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: var(--space-4);
        }

        .news-sidebar h4 {
            font-size: 1.1rem;
            margin-bottom: var(--space-3);
        }

        /* FAQ */
        .accordion-custom .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            margin-bottom: var(--space-3);
            overflow: hidden;
        }

        .accordion-custom .accordion-button {
            background: var(--bg-card);
            color: var(--text-white);
            font-weight: 600;
            padding: 20px 24px;
            font-size: 1rem;
            box-shadow: none;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(0, 240, 255, 0.08);
            color: var(--accent-cyan);
            box-shadow: none;
        }

        .accordion-custom .accordion-button::after {
            filter: invert(1) brightness(1.5);
        }

        .accordion-custom .accordion-body {
            background: var(--bg-card);
            color: var(--text-silver);
            padding: 20px 24px;
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1050;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(11, 26, 48, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            box-shadow: var(--shadow-neon);
            cursor: pointer;
            opacity: 0.7;
            animation: fabFloat 3s ease-in-out infinite;
            transition: var(--transition);
        }

        .fab-left:hover {
            opacity: 1;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.8);
            transform: scale(1.1);
            color: var(--accent-cyan);
        }

        .fab-left:active {
            transform: scale(0.95);
            border-color: var(--accent-pink);
            color: var(--accent-pink);
        }

        .fab-left .notification-dot {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-pink);
            border: 2px solid var(--bg-deep);
            animation: dotBlink 1.5s ease-in-out infinite;
        }

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

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

        /* FOOTER */
        .footer {
            background: #080B18;
            border-top: 1px solid var(--border-subtle);
            padding: var(--space-7) 0 var(--space-4);
            margin-top: var(--space-7);
        }

        .footer .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .footer h5 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--space-3);
            color: var(--text-white);
        }

        .footer a {
            color: var(--text-silver);
            font-size: 0.9rem;
            display: block;
            margin-bottom: 8px;
        }

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

        .footer .copyright {
            color: var(--text-muted);
            font-size: 0.85rem;
            border-top: 1px solid var(--border-subtle);
            padding-top: var(--space-4);
            margin-top: var(--space-5);
        }

        .footer .payment-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.06);
            padding: 6px 14px;
            border-radius: 8px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-silver);
            margin-right: 8px;
            margin-bottom: 8px;
        }

        /* MILESTONE */
        .milestone-item {
            display: flex;
            gap: var(--space-4);
            align-items: flex-start;
            margin-bottom: var(--space-4);
        }

        .milestone-dot {
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--accent-cyan);
            flex-shrink: 0;
            margin-top: 4px;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
        }

        .milestone-content h5 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .milestone-content p {
            color: var(--text-silver);
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* TIMER */
        .countdown-timer {
            display: flex;
            gap: var(--space-3);
            align-items: center;
        }

        .countdown-box {
            background: rgba(255, 0, 127, 0.1);
            border: 1px solid rgba(255, 0, 127, 0.3);
            border-radius: var(--radius-sm);
            padding: 12px 18px;
            text-align: center;
            min-width: 70px;
        }

        .countdown-box .number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-pink);
            line-height: 1;
        }

        .countdown-box .label {
            font-size: 0.75rem;
            color: var(--text-silver);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        /* RESPONSIVE */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 2.2rem;
            }
            .section {
                padding: var(--space-6) 0;
            }
        }

        @media (max-width: 768px) {
            .hero {
                padding: var(--space-6) 0 var(--space-5);
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero-description {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .navbar-main .navbar-brand {
                font-size: 1rem;
            }
            .compare-table th,
            .compare-table td {
                padding: 12px 16px;
                font-size: 0.85rem;
            }
            .hero-visual img {
                max-height: 280px;
                margin-top: var(--space-4);
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero-stat {
                padding: 10px 14px;
            }
            .hero-stat .stat-value {
                font-size: 1.2rem;
            }
            .btn-primary-custom,
            .btn-secondary-custom,
            .btn-pink {
                padding: 12px 22px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }
            .hero-meta {
                flex-direction: column;
                align-items: stretch;
            }
            .countdown-timer {
                flex-wrap: wrap;
                justify-content: center;
            }
            .countdown-box {
                min-width: 60px;
                padding: 10px 12px;
            }
            .countdown-box .number {
                font-size: 1.4rem;
            }
            .fab-left {
                width: 46px;
                height: 46px;
                font-size: 1.3rem;
                bottom: 80px;
                left: 12px;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #0F0C20;
            --secondary-bg: #0B1A30;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --border-glow: rgba(0, 240, 255, 0.5);
            --card-bg: #12102A;
            --radius-sm: 12px;
            --radius-md: 20px;
            --radius-lg: 28px;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-lime: 0 0 20px rgba(204, 255, 0, 0.4);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --spacing-xl: 6rem;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            background: var(--primary-bg);
            color: var(--text-white);
            font-family: 'Inter', 'Segoe UI', 'Roboto', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: all 0.25s ease;
        }
        a:hover {
            color: var(--accent-lime);
        }
        a:focus-visible, button:focus-visible {
            outline: 2px solid var(--accent-lime);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
            color: var(--text-white);
        }
        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        .section {
            padding: var(--spacing-lg) 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, #fff 30%, var(--accent-cyan) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-subtitle {
            color: var(--text-silver);
            font-size: 1.1rem;
            margin-bottom: 2.5rem;
            max-width: 700px;
        }

        /* Navbar */
        .navbar-main {
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.25);
            padding: 0.75rem 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--text-white);
            letter-spacing: -0.3px;
        }
        .navbar-brand:hover {
            color: var(--accent-cyan);
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border-radius: 12px;
            color: var(--primary-bg);
            font-size: 1.3rem;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
        }
        .navbar-nav .nav-link {
            color: var(--text-silver);
            font-weight: 500;
            padding: 0.5rem 1.1rem;
            border-radius: 30px;
            transition: all 0.25s ease;
            position: relative;
        }
        .navbar-nav .nav-link:hover {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.1);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary-bg);
            background: var(--accent-cyan);
            font-weight: 600;
        }
        .btn-login {
            background: transparent;
            border: 1.5px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 0.5rem 1.2rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .btn-login:hover {
            background: rgba(0, 240, 255, 0.15);
            color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border: none;
            color: var(--primary-bg);
            padding: 0.5rem 1.4rem;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.25s ease;
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(0, 240, 255, 0.35);
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(0, 240, 255, 0.5);
            color: var(--primary-bg);
        }
        .navbar-toggler {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.3);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2300F0FF' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* Hero */
        .hero-category {
            padding: 5rem 0 4rem;
            position: relative;
            background: radial-gradient(ellipse at top right, rgba(0, 240, 255, 0.12), transparent 50%), radial-gradient(ellipse at bottom left, rgba(204, 255, 0, 0.08), transparent 50%);
        }
        .hero-category h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.2;
            margin-bottom: 1.2rem;
            background: linear-gradient(135deg, #fff 20%, var(--accent-cyan) 70%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-category .lead {
            color: var(--text-silver);
            font-size: 1.15rem;
            margin-bottom: 2rem;
            max-width: 650px;
        }
        .hero-kpi {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            margin-top: 2rem;
        }
        .hero-kpi .kpi-item {
            text-align: left;
        }
        .hero-kpi .kpi-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-lime);
            line-height: 1;
            display: block;
        }
        .hero-kpi .kpi-label {
            color: var(--text-silver);
            font-size: 0.9rem;
        }
        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-visual img {
            border-radius: var(--radius-lg);
            border: 1.5px solid rgba(0, 240, 255, 0.4);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 25px rgba(0, 240, 255, 0.3);
            max-height: 420px;
            object-fit: cover;
            width: 100%;
        }

        /* Cards & Lists */
        .feature-card {
            background: var(--card-bg);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-md);
            padding: 2rem;
            transition: all 0.3s ease;
            height: 100%;
        }
        .feature-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
            transform: translateY(-6px);
        }
        .feature-card .icon-box {
            width: 56px;
            height: 56px;
            background: rgba(0, 240, 255, 0.15);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--accent-cyan);
            margin-bottom: 1.2rem;
        }
        .feature-card h3 {
            font-size: 1.4rem;
            margin-bottom: 0.7rem;
        }
        .feature-card p {
            color: var(--text-silver);
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        .step-card {
            background: transparent;
            border: none;
            padding: 1.5rem;
            position: relative;
        }
        .step-number {
            font-size: 3rem;
            font-weight: 800;
            color: rgba(0, 240, 255, 0.2);
            line-height: 1;
            display: block;
            margin-bottom: 0.5rem;
        }
        .step-card h3 {
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }
        .step-card p {
            color: var(--text-silver);
            font-size: 0.9rem;
        }

        /* FAQ */
        .faq-item {
            background: var(--card-bg);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-sm);
            margin-bottom: 1rem;
            overflow: hidden;
        }
        .faq-item .accordion-button {
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            padding: 1.2rem 1.5rem;
            font-size: 1.05rem;
        }
        .faq-item .accordion-button:not(.collapsed) {
            background: rgba(0, 240, 255, 0.08);
            color: var(--accent-cyan);
            box-shadow: none;
        }
        .faq-item .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.3);
        }
        .faq-item .accordion-body {
            color: var(--text-silver);
            padding: 1.2rem 1.5rem;
            font-size: 0.95rem;
            border-top: 1px solid rgba(0, 240, 255, 0.1);
        }
        .accordion-button::after {
            filter: brightness(0) invert(1);
        }

        /* CTA */
        .cta-box {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(204, 255, 0, 0.1));
            border: 1.5px solid rgba(0, 240, 255, 0.4);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            position: relative;
            overflow: hidden;
        }
        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 0.8rem;
        }
        .cta-box p {
            color: var(--text-silver);
            font-size: 1.05rem;
            margin-bottom: 1.5rem;
            max-width: 600px;
        }
        .btn-cta {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border: none;
            color: var(--primary-bg);
            padding: 0.9rem 2.2rem;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            box-shadow: 0 6px 20px rgba(0, 240, 255, 0.4);
        }
        .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(0, 240, 255, 0.55);
            color: var(--primary-bg);
        }

        /* Payment Badges */
        .payment-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--text-white);
            padding: 0.3rem 0.8rem;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
        }

        /* FAB */
        .fab-support {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 1050;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(10px);
            border: 2px solid var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: all 0.3s ease;
            opacity: 0.7;
            cursor: pointer;
            animation: fabFloat 3s ease-in-out infinite;
        }
        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.8);
        }
        .fab-support .notification-dot {
            position: absolute;
            top: 0;
            right: 0;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid var(--primary-bg);
            animation: blink 1.5s infinite;
        }
        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        /* Footer */
        .footer {
            background: #080610;
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            padding: 4rem 0 2rem;
            margin-top: 2rem;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-white);
        }
        .footer h5 {
            color: var(--accent-cyan);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
        }
        .footer a {
            display: block;
            color: var(--text-silver);
            margin-bottom: 0.7rem;
            font-size: 0.9rem;
            transition: all 0.2s ease;
        }
        .footer a:hover {
            color: var(--accent-lime);
            padding-left: 5px;
        }
        .copyright {
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            color: var(--text-silver);
            font-size: 0.85rem;
        }

        /* Responsive */
        @media (max-width: 991px) {
            .hero-category {
                padding: 3.5rem 0 3rem;
            }
            .hero-category h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 3rem 0;
            }
            .hero-category h1 {
                font-size: 1.9rem;
            }
            .hero-kpi {
                gap: 1.5rem;
            }
            .hero-kpi .kpi-number {
                font-size: 1.8rem;
            }
            .cta-box {
                padding: 2rem 1.5rem;
            }
            .cta-box h2 {
                font-size: 1.6rem;
            }
            .navbar-brand {
                font-size: 1.1rem;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 1.1rem;
            }
        }
        @media (max-width: 520px) {
            .hero-category h1 {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .btn-login, .btn-signup {
                padding: 0.4rem 0.8rem;
                font-size: 0.8rem;
            }
            .hero-visual img {
                max-height: 280px;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --bg-card: #151230;
            --accent-neon: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-hot-pink: #FF007F;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #6C7293;
            --border-neon: rgba(0, 240, 255, 0.3);
            --border-card: rgba(204, 255, 0, 0.2);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.3);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.25);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 32px;
            --spacing-lg: 64px;
            --spacing-xl: 96px;
            --font-primary: 'Be Vietnam Pro', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        
        a {
            text-decoration: none;
            color: var(--accent-cyan);
            transition: color var(--transition-fast);
        }
        
        a:hover {
            color: var(--accent-neon);
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button {
            cursor: pointer;
            border: none;
            outline: none;
            font-family: var(--font-primary);
        }
        
        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }
        
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        
        /* ===== NAVBAR ===== */
        .navbar-main {
            background: rgba(15, 12, 32, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-neon);
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: all var(--transition-base);
        }
        
        .navbar-main .navbar-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.3px;
        }
        
        .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-neon));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 1.2rem;
            box-shadow: var(--shadow-neon);
            flex-shrink: 0;
        }
        
        .navbar-main .nav-link {
            color: var(--text-silver);
            font-weight: 500;
            font-size: 0.9rem;
            padding: 10px 16px !important;
            position: relative;
            transition: color var(--transition-fast);
            letter-spacing: 0.2px;
        }
        
        .navbar-main .nav-link:hover {
            color: var(--accent-cyan);
        }
        
        .navbar-main .nav-link.active {
            color: var(--accent-neon);
        }
        
        .navbar-main .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--accent-neon);
            border-radius: 2px;
            box-shadow: var(--shadow-lime);
        }
        
        .btn-login {
            background: transparent;
            color: var(--text-white);
            padding: 10px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid var(--border-neon);
            transition: all var(--transition-fast);
            letter-spacing: 0.3px;
        }
        
        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
        }
        
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-neon));
            color: var(--bg-primary);
            padding: 10px 24px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            transition: all var(--transition-base);
            letter-spacing: 0.3px;
            box-shadow: var(--shadow-neon);
        }
        
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 240, 255, 0.5);
            color: var(--bg-primary);
        }
        
        .navbar-toggler {
            border: 1px solid var(--border-neon);
            background: rgba(255, 255, 255, 0.05);
            padding: 6px 12px;
            border-radius: 8px;
        }
        
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(0, 240, 255, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        
        /* ===== ARTICLE HEADER ===== */
        .article-header {
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
            padding: 64px 0 48px;
            border-bottom: 1px solid var(--border-card);
            position: relative;
            overflow: hidden;
        }
        
        .article-header::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .article-header::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(204, 255, 0, 0.06), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        
        .article-breadcrumb a {
            color: var(--text-silver);
            transition: color var(--transition-fast);
        }
        
        .article-breadcrumb a:hover {
            color: var(--accent-cyan);
        }
        
        .article-breadcrumb .separator {
            color: var(--text-muted);
            font-size: 0.7rem;
        }
        
        .article-breadcrumb .current {
            color: var(--accent-neon);
            font-weight: 500;
        }
        
        .article-title {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
            color: var(--text-white);
            position: relative;
            z-index: 1;
        }
        
        .article-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-muted);
            position: relative;
            z-index: 1;
        }
        
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        
        .article-meta .meta-item i {
            color: var(--accent-cyan);
            font-size: 0.8rem;
        }
        
        .article-meta .category-tag {
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            border: 1px solid var(--border-neon);
            letter-spacing: 0.3px;
        }
        
        /* ===== ARTICLE CONTENT ===== */
        .article-content-section {
            padding: 56px 0 72px;
            background: var(--bg-primary);
        }
        
        .article-content-wrapper {
            max-width: 820px;
            margin: 0 auto;
        }
        
        .article-featured-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 40px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-card);
            position: relative;
        }
        
        .article-featured-image img {
            width: 100%;
            height: auto;
            min-height: 300px;
            object-fit: cover;
        }
        
        .article-body {
            color: var(--text-silver);
            font-size: 1.05rem;
            line-height: 1.7;
        }
        
        .article-body h2 {
            color: var(--text-white);
            font-size: 1.7rem;
            font-weight: 700;
            margin: 48px 0 20px;
            letter-spacing: -0.3px;
            line-height: 1.3;
        }
        
        .article-body h3 {
            color: var(--accent-neon);
            font-size: 1.3rem;
            font-weight: 600;
            margin: 36px 0 16px;
            letter-spacing: -0.2px;
        }
        
        .article-body p {
            margin-bottom: 20px;
        }
        
        .article-body strong {
            color: var(--text-white);
            font-weight: 600;
        }
        
        .article-body ul,
        .article-body ol {
            margin-bottom: 24px;
            padding-left: 24px;
        }
        
        .article-body ul li,
        .article-body ol li {
            margin-bottom: 12px;
            position: relative;
        }
        
        .article-body ul li::marker {
            color: var(--accent-cyan);
        }
        
        .article-body ol li::marker {
            color: var(--accent-neon);
            font-weight: 600;
        }
        
        .article-body blockquote {
            border-left: 4px solid var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
            padding: 20px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 32px 0;
            font-style: italic;
            color: var(--text-white);
            font-size: 1.1rem;
        }
        
        .article-body img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
        }
        
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.9rem;
        }
        
        .article-body table th {
            background: var(--bg-secondary);
            color: var(--accent-neon);
            font-weight: 600;
            padding: 12px 16px;
            text-align: left;
            border: 1px solid var(--border-card);
        }
        
        .article-body table td {
            padding: 12px 16px;
            border: 1px solid var(--border-card);
            color: var(--text-silver);
        }
        
        .article-body table tr:nth-child(even) td {
            background: rgba(255, 255, 255, 0.02);
        }
        
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
        }
        
        .article-not-found i {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            display: block;
        }
        
        .article-not-found h2 {
            color: var(--text-white);
            font-size: 1.8rem;
            margin-bottom: 16px;
            font-weight: 700;
        }
        
        .article-not-found p {
            color: var(--text-silver);
            margin-bottom: 28px;
        }
        
        .btn-back-home {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-neon));
            color: var(--bg-primary);
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-neon);
        }
        
        .btn-back-home:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 240, 255, 0.5);
            color: var(--bg-primary);
        }
        
        /* ===== ARTICLE CTA ===== */
        .article-cta {
            background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-md);
            padding: 40px;
            margin-top: 56px;
            position: relative;
            overflow: hidden;
        }
        
        .article-cta::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.15), transparent 70%);
            border-radius: 50%;
        }
        
        .article-cta h3 {
            color: var(--text-white);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        
        .article-cta p {
            color: var(--text-silver);
            margin-bottom: 24px;
            font-size: 0.95rem;
        }
        
        .btn-cta-primary {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-neon));
            color: var(--bg-primary);
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-neon);
            letter-spacing: 0.3px;
        }
        
        .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 240, 255, 0.6);
            color: var(--bg-primary);
        }
        
        /* ===== FLOATING ACTION BUTTON ===== */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1050;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), linear-gradient(135deg, var(--accent-neon), var(--accent-cyan));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            cursor: pointer;
            transition: all var(--transition-base);
            opacity: 0.6;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            animation: fabFloat 3s ease-in-out infinite;
        }
        
        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.8);
            color: var(--accent-neon);
            animation-play-state: paused;
        }
        
        .fab-support:active {
            transform: scale(0.95);
        }
        
        .fab-support .notification-dot {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 10px;
            height: 10px;
            background: var(--accent-hot-pink);
            border-radius: 50%;
            box-shadow: 0 0 10px var(--accent-hot-pink);
            animation: notificationBlink 1.5s ease-in-out infinite;
        }
        
        @keyframes fabFloat {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }
        
        @keyframes notificationBlink {
            0%, 100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }
        
        /* ===== FOOTER ===== */
        .footer {
            background: var(--bg-secondary);
            padding: 64px 0 24px;
            border-top: 1px solid var(--border-card);
            position: relative;
            overflow: hidden;
        }
        
        .footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-neon), transparent);
        }
        
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
        }
        
        .footer h5 {
            color: var(--accent-neon);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        
        .footer a {
            display: block;
            color: var(--text-silver);
            font-size: 0.85rem;
            margin-bottom: 12px;
            transition: all var(--transition-fast);
        }
        
        .footer a:hover {
            color: var(--accent-cyan);
            padding-left: 4px;
        }
        
        .payment-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-card);
            border-radius: 50px;
            padding: 6px 14px;
            font-size: 0.75rem;
            color: var(--text-silver);
            margin-right: 8px;
            margin-bottom: 8px;
            transition: all var(--transition-fast);
        }
        
        .payment-badge:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }
        
        .payment-badge i {
            color: var(--accent-neon);
            font-size: 0.7rem;
        }
        
        .copyright {
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid var(--border-card);
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        
        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .article-title {
                font-size: 2.2rem;
            }
            
            .article-content-wrapper {
                max-width: 100%;
            }
        }
        
        @media (max-width: 768px) {
            .navbar-main {
                padding: 8px 0;
            }
            
            .navbar-main .navbar-brand {
                font-size: 1rem;
            }
            
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
                border-radius: 10px;
            }
            
            .navbar-main .nav-link {
                font-size: 0.85rem;
                padding: 12px 16px !important;
            }
            
            .navbar-main .nav-link.active::after {
                left: 16px;
                right: auto;
                width: 24px;
                bottom: 6px;
            }
            
            .btn-login,
            .btn-signup {
                font-size: 0.8rem;
                padding: 8px 16px;
                white-space: nowrap;
            }
            
            .article-header {
                padding: 40px 0 32px;
            }
            
            .article-title {
                font-size: 1.8rem;
                margin-bottom: 16px;
            }
            
            .article-meta {
                gap: 16px;
                font-size: 0.78rem;
            }
            
            .article-content-section {
                padding: 40px 0 56px;
            }
            
            .article-body {
                font-size: 0.98rem;
            }
            
            .article-body h2 {
                font-size: 1.4rem;
                margin: 36px 0 16px;
            }
            
            .article-body h3 {
                font-size: 1.15rem;
                margin: 28px 0 12px;
            }
            
            .article-cta {
                padding: 28px 24px;
                margin-top: 40px;
            }
            
            .article-cta h3 {
                font-size: 1.3rem;
            }
            
            .fab-support {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
            }
            
            .footer {
                padding: 48px 0 20px;
            }
            
            .footer h5 {
                font-size: 0.85rem;
                margin-bottom: 16px;
            }
            
            .footer a {
                font-size: 0.8rem;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            
            .article-title {
                font-size: 1.5rem;
                letter-spacing: -0.3px;
            }
            
            .article-meta {
                gap: 12px;
                font-size: 0.72rem;
                flex-direction: column;
                align-items: flex-start;
            }
            
            .article-body {
                font-size: 0.92rem;
            }
            
            .article-body h2 {
                font-size: 1.25rem;
            }
            
            .article-body h3 {
                font-size: 1.05rem;
            }
            
            .article-body blockquote {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            
            .article-cta {
                padding: 24px 20px;
            }
            
            .btn-cta-primary {
                width: 100%;
                justify-content: center;
                font-size: 0.9rem;
                padding: 12px 24px;
            }
            
            .btn-back-home {
                width: 100%;
                justify-content: center;
            }
            
            .footer .row {
                gap: 32px;
            }
            
            .copyright {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

/* roulang page: category2 */
:root {
            --primary-bg: #0B1A30;
            --secondary-bg: #0F0C20;
            --card-bg: #111F38;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #7B8496;
            --border-neon: rgba(0, 240, 255, 0.35);
            --border-lime: rgba(204, 255, 0, 0.45);
            --shadow-neon: 0 0 25px rgba(0, 240, 255, 0.18);
            --shadow-lime: 0 0 30px rgba(204, 255, 0, 0.15);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.75rem;
            --spacing-lg: 2.5rem;
            --spacing-xl: 4rem;
            --spacing-2xl: 6rem;
            --font-main: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: var(--font-main);
            background: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            background-image: 
                radial-gradient(circle at 20% 20%, rgba(0, 240, 255, 0.05) 0%, transparent 45%),
                radial-gradient(circle at 80% 70%, rgba(204, 255, 0, 0.04) 0%, transparent 50%);
            background-attachment: fixed;
        }

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

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

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

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

        /* ========== NAVBAR ========== */
        .navbar-main {
            background: rgba(11, 26, 48, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-neon);
            padding: 0.85rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: var(--transition-base);
        }

        .navbar-main.scrolled {
            background: rgba(11, 26, 48, 0.98);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
            padding: 0.6rem 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--text-white) !important;
            letter-spacing: -0.01em;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--accent-cyan), #0080B0);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-bg);
            font-size: 1.2rem;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
            transition: var(--transition-base);
        }

        .navbar-brand:hover .brand-icon {
            transform: rotate(15deg) scale(1.05);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.55);
        }

        .navbar-nav .nav-link {
            color: var(--text-silver);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.55rem 1.2rem !important;
            border-radius: 30px;
            transition: var(--transition-fast);
            position: relative;
        }

        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.1);
        }

        .navbar-nav .nav-link.active {
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 10px var(--accent-cyan);
        }

        .navbar-toggler {
            border: 1px solid var(--border-neon);
            padding: 0.4rem 0.7rem;
            border-radius: 8px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.25);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%280, 240, 255, 0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--border-neon);
            color: var(--text-white);
            padding: 0.55rem 1.3rem;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-fast);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.2);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-cyan), #00A8CC);
            color: var(--primary-bg);
            border: none;
            padding: 0.55rem 1.45rem;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 4px 18px rgba(0, 240, 255, 0.3);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.45);
            background: linear-gradient(135deg, #33F5FF, #00C8E0);
            color: var(--primary-bg);
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            overflow: hidden;
            background: 
                radial-gradient(ellipse at 30% 40%, rgba(0, 240, 255, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 60%, rgba(204, 255, 0, 0.06) 0%, transparent 50%);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: 
                linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
            background-size: 42px 42px;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid var(--border-neon);
            padding: 0.45rem 1.2rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: var(--accent-cyan);
            font-weight: 500;
            letter-spacing: 0.02em;
            margin-bottom: var(--spacing-md);
        }

        .hero-badge .pulse-dot {
            width: 8px;
            height: 8px;
            background: var(--accent-lime);
            border-radius: 50%;
            animation: pulseDot 1.8s infinite;
        }

        @keyframes pulseDot {
            0%, 100% { box-shadow: 0 0 0 0 rgba(204, 255, 0, 0.6); }
            50% { box-shadow: 0 0 0 6px rgba(204, 255, 0, 0); }
        }

        .hero-title {
            font-size: clamp(2.1rem, 5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #FFFFFF 30%, var(--accent-cyan) 65%, var(--accent-lime) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
            max-width: 580px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: var(--spacing-lg);
        }

        .btn-primary-neon {
            background: linear-gradient(135deg, var(--accent-cyan), #00A8CC);
            color: var(--primary-bg);
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 6px 24px rgba(0, 240, 255, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }

        .btn-primary-neon:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(0, 240, 255, 0.45);
            background: linear-gradient(135deg, #33F5FF, #00C8E0);
            color: var(--primary-bg);
        }

        .btn-secondary-outline {
            background: transparent;
            border: 1px solid var(--border-lime);
            color: var(--accent-lime);
            padding: 0.8rem 1.8rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }

        .btn-secondary-outline:hover {
            background: rgba(204, 255, 0, 0.1);
            box-shadow: 0 0 22px rgba(204, 255, 0, 0.25);
            border-color: var(--accent-lime);
            color: var(--accent-lime);
        }

        .hero-stats {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 0.2rem;
        }

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

        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }

        .hero-visual {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-image-wrapper {
            position: relative;
            width: 100%;
            max-width: 480px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-neon);
            border: 1px solid var(--border-neon);
        }

        .hero-image-wrapper img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .hero-image-wrapper::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(204, 255, 0, 0.08));
            pointer-events: none;
        }

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

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

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 0.5rem;
        }

        .section-title {
            font-size: clamp(1.6rem, 3.5vw, 2.3rem);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 0.75rem;
        }

        .section-desc {
            color: var(--text-silver);
            font-size: 1rem;
            line-height: 1.7;
            max-width: 640px;
        }

        /* ========== STRATEGY CARDS ========== */
        .strategy-card {
            background: var(--card-bg);
            border: 1px solid rgba(0, 240, 255, 0.18);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            height: 100%;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

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

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

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

        .strategy-icon {
            width: 52px;
            height: 52px;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            margin-bottom: var(--spacing-sm);
            transition: var(--transition-base);
        }

        .strategy-card:hover .strategy-icon {
            background: rgba(0, 240, 255, 0.22);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.25);
        }

        .strategy-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

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

        /* ========== TIP LIST ========== */
        .tip-item {
            display: flex;
            gap: 1.2rem;
            padding: 1.4rem 0;
            border-bottom: 1px solid rgba(166, 172, 175, 0.12);
            transition: var(--transition-fast);
        }

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

        .tip-number {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            background: rgba(204, 255, 0, 0.12);
            border: 1px solid var(--border-lime);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: var(--accent-lime);
            font-size: 1.05rem;
        }

        .tip-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.35rem;
            color: var(--text-white);
        }

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

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

        .accordion-faq .accordion-item {
            background: var(--card-bg);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.8rem;
            overflow: hidden;
            transition: var(--transition-fast);
        }

        .accordion-faq .accordion-item:hover {
            border-color: rgba(0, 240, 255, 0.35);
        }

        .accordion-faq .accordion-button {
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            padding: 1.2rem 1.4rem;
            box-shadow: none;
            border-radius: var(--radius-md) !important;
        }

        .accordion-faq .accordion-button:not(.collapsed) {
            background: rgba(0, 240, 255, 0.08);
            color: var(--accent-cyan);
            box-shadow: none;
        }

        .accordion-faq .accordion-button::after {
            filter: invert(70%) sepia(90%) saturate(500%) hue-rotate(160deg);
        }

        .accordion-faq .accordion-body {
            color: var(--text-silver);
            font-size: 0.92rem;
            line-height: 1.7;
            padding: 0 1.4rem 1.3rem;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: var(--spacing-xl) 0;
            position: relative;
            overflow: hidden;
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.1), rgba(204, 255, 0, 0.08));
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.12), transparent 60%);
            border-radius: 50%;
        }

        .cta-box h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            color: var(--text-silver);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-neon);
            padding: var(--spacing-xl) 0 2rem;
            position: relative;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            display: flex;
            align-items: center;
        }

        .footer h5 {
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 1.2rem;
        }

        .footer a {
            display: block;
            color: var(--text-silver);
            font-size: 0.9rem;
            margin-bottom: 0.7rem;
            transition: var(--transition-fast);
        }

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

        .payment-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-neon);
            padding: 0.4rem 0.85rem;
            border-radius: 20px;
            font-size: 0.78rem;
            color: var(--text-silver);
            margin-right: 0.5rem;
            margin-bottom: 0.4rem;
            transition: var(--transition-fast);
        }

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

        .copyright {
            margin-top: var(--spacing-lg);
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(166, 172, 175, 0.12);
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* ========== FAB ========== */
        .fab-floating {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 1040;
            width: 58px;
            height: 58px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.45);
            animation: fabPulse 3s infinite;
            opacity: 0.65;
        }

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

        .fab-floating:active {
            transform: scale(0.92);
        }

        .fab-floating i {
            font-size: 1.4rem;
            color: var(--accent-cyan);
            transition: var(--transition-fast);
        }

        .fab-floating:hover i {
            color: var(--accent-lime);
        }

        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: var(--accent-pink);
            border-radius: 50%;
            border: 2px solid var(--primary-bg);
            animation: fabNotif 1.6s infinite;
        }

        @keyframes fabPulse {
            0%, 100% { box-shadow: 0 0 18px rgba(0, 240, 255, 0.4); }
            50% { box-shadow: 0 0 30px rgba(0, 240, 255, 0.65); }
        }

        @keyframes fabNotif {
            0%, 100% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.25); opacity: 0.7; }
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: rgba(11, 26, 48, 0.98);
                border-radius: var(--radius-md);
                padding: 1rem;
                margin-top: 0.8rem;
                border: 1px solid var(--border-neon);
            }

            .navbar-nav .nav-link {
                padding: 0.7rem 1rem !important;
            }

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

            .hero-visual {
                margin-top: var(--spacing-lg);
            }

            .cta-box {
                padding: var(--spacing-md);
            }
        }

        @media (max-width: 767.98px) {
            .hero-title {
                font-size: 2rem;
            }

            .hero-stats {
                gap: 1.2rem;
            }

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

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

            .strategy-card {
                padding: var(--spacing-sm);
            }

            .fab-floating {
                width: 50px;
                height: 50px;
                left: 0.75rem;
                bottom: 5rem;
            }

            .fab-floating i {
                font-size: 1.2rem;
            }
        }

        @media (max-width: 519.98px) {
            .hero-title {
                font-size: 1.7rem;
            }

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

            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }

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

            .section-title {
                font-size: 1.5rem;
            }

            .tip-item {
                flex-direction: column;
                gap: 0.6rem;
            }

            .footer {
                padding: var(--spacing-lg) 0 1.5rem;
            }
        }