/* roulang page: index */
:root {
            --primary-bg: #0A2E1C;
            --secondary-bg: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --border-gold: #C5A059;
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --line-height-body: 1.6;
        }

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

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

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

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

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

        ::selection {
            background: var(--accent-gold);
            color: var(--primary-bg);
        }

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 46, 28, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
            padding: 0;
            transition: var(--transition-smooth);
        }

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

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: -0.3px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo i {
            font-size: 1.5rem;
            color: var(--accent-gold);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav li a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mint);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
            transition: var(--transition-fast);
        }

        .main-nav li a:hover,
        .main-nav li a.active {
            color: var(--accent-gold);
        }

        .main-nav li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            transition: width var(--transition-smooth);
        }

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

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

        .btn-login {
            background: transparent;
            color: var(--accent-gold);
            border: 1px solid var(--accent-gold);
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }

        .btn-login:hover {
            background: rgba(255, 215, 0, 0.1);
            border-color: #fff;
            color: #fff;
        }

        .btn-signup {
            background: var(--accent-gold);
            color: var(--primary-bg);
            padding: 10px 24px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: var(--shadow-gold);
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            background: #fff;
            color: var(--primary-bg);
            box-shadow: 0 6px 24px rgba(255, 215, 0, 0.5);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--accent-gold);
            font-size: 1.6rem;
            padding: 4px;
        }

        /* Hero Section */
        .hero {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
            position: relative;
            overflow: hidden;
            min-height: 80vh;
            display: flex;
            align-items: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 215, 0, 0.15);
            border: 1px solid rgba(255, 215, 0, 0.4);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-gold);
            margin-bottom: 24px;
            letter-spacing: 0.3px;
        }

        .hero-badge i {
            font-size: 1rem;
        }

        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            color: #fff;
            letter-spacing: -0.5px;
        }

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

        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-mint);
            margin-bottom: 32px;
            max-width: 580px;
            line-height: 1.7;
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-bottom: 32px;
        }

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

        .hero-stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.1;
        }

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

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

        .btn-primary {
            background: var(--accent-gold);
            color: var(--primary-bg);
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: var(--shadow-gold);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-smooth);
        }

        .btn-primary:hover {
            background: #fff;
            color: var(--primary-bg);
            box-shadow: 0 8px 28px rgba(255, 215, 0, 0.55);
            transform: translateY(-2px);
        }

        .btn-secondary {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition-smooth);
        }

        .btn-secondary:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }

        /* Section Common */
        .section {
            padding: 80px 0;
        }

        .section-dark {
            background: var(--secondary-bg);
        }

        .section-header {
            margin-bottom: 48px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--accent-gold);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-mint);
            max-width: 650px;
            line-height: 1.7;
        }

        /* Three Pillars */
        .pillars-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .pillar-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 215, 0, 0.15);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .pillar-card:hover {
            border-color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.05);
            box-shadow: var(--shadow-gold);
            transform: translateY(-4px);
        }

        .pillar-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(255, 215, 0, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 1.4rem;
            color: var(--accent-gold);
        }

        .pillar-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

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

        /* Scenario Section */
        .scenario-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .scenario-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 2px solid rgba(255, 215, 0, 0.25);
            box-shadow: var(--shadow-card);
        }

        .scenario-visual img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .scenario-info h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .scenario-info p {
            color: var(--text-mint);
            line-height: 1.7;
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .scenario-list {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
        }

        .scenario-list li {
            padding: 8px 0;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-mint);
            font-size: 0.95rem;
        }

        .scenario-list li i {
            color: var(--accent-gold);
            margin-top: 3px;
            font-size: 0.9rem;
        }

        /* Trust / Social Proof */
        .trust-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .trust-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 215, 0, 0.2);
            border-radius: var(--radius-md);
            padding: 28px 16px;
            transition: var(--transition-smooth);
        }

        .trust-item:hover {
            border-color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.05);
        }

        .trust-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.2;
        }

        .trust-label {
            font-size: 0.9rem;
            color: var(--text-mint);
            margin-top: 8px;
        }

        /* Pricing / Comparison */
        .compare-table-wrap {
            overflow-x: auto;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: rgba(255, 255, 255, 0.02);
            border-radius: var(--radius-lg);
            overflow: hidden;
        }

        .compare-table th,
        .compare-table td {
            padding: 18px 20px;
            text-align: left;
            border-bottom: 1px solid rgba(255, 215, 0, 0.12);
            color: var(--text-mint);
            font-size: 0.95rem;
        }

        .compare-table th {
            background: var(--secondary-bg);
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 1rem;
        }

        .compare-table tr:hover td {
            background: rgba(255, 215, 0, 0.04);
        }

        .compare-highlight {
            color: var(--accent-gold);
            font-weight: 700;
        }

        /* News / Content List */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 360px;
            gap: 40px;
        }

        .news-main-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .news-main-list li {
            padding: 18px 0;
            border-bottom: 1px solid rgba(255, 215, 0, 0.1);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .news-main-list li a {
            font-size: 1.05rem;
            font-weight: 600;
            color: #fff;
            transition: var(--transition-fast);
            line-height: 1.4;
        }

        .news-main-list li a:hover {
            color: var(--accent-gold);
        }

        .news-meta {
            font-size: 0.8rem;
            color: var(--text-mint);
            display: flex;
            gap: 16px;
        }

        .news-side-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 215, 0, 0.15);
            border-radius: var(--radius-lg);
            padding: 28px;
        }

        .news-side-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 16px;
        }

        .news-side-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .news-side-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .news-side-card ul li a {
            font-size: 0.9rem;
            color: var(--text-mint);
            transition: var(--transition-fast);
        }

        .news-side-card ul li a:hover {
            color: var(--accent-gold);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
            padding: 24px 0;
            cursor: pointer;
        }

        .faq-question {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .faq-question i {
            color: var(--accent-gold);
            transition: var(--transition-smooth);
            font-size: 1rem;
        }

        .faq-answer {
            color: var(--text-mint);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-top: 12px;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

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

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary-bg), var(--primary-bg));
            border: 1px solid rgba(255, 215, 0, 0.25);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-section p {
            color: var(--text-mint);
            font-size: 1.05rem;
            margin-bottom: 28px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Footer */
        .site-footer {
            background: var(--secondary-bg);
            border-top: 2px solid rgba(255, 215, 0, 0.3);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 16px;
        }

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

        .footer-col ul li {
            padding: 6px 0;
        }

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

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

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            color: var(--text-mint);
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid var(--accent-gold);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-right: 12px;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-bg);
            border: 2px solid var(--accent-gold);
            box-shadow: var(--shadow-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-gold);
            cursor: pointer;
            transition: var(--transition-smooth);
            animation: float 3s ease-in-out infinite;
            opacity: 0.75;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 6px 28px rgba(255, 215, 0, 0.45);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 2.4rem;
            }
            .pillars-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .trust-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .scenario-block {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: rgba(10, 46, 28, 0.98);
                flex-direction: column;
                padding: 20px;
                gap: 16px;
                border-bottom: 2px solid var(--accent-gold);
            }
            .main-nav.open {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .hero {
                padding: 120px 0 60px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .hero-stat-number {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .pillars-grid {
                grid-template-columns: 1fr;
            }
            .trust-stats {
                grid-template-columns: 1fr 1fr;
            }
            .cta-section {
                padding: 40px 20px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .header-actions .btn-login,
            .header-actions .btn-signup {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .fab {
                width: 48px;
                height: 48px;
                bottom: 80px;
                left: 12px;
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .trust-stats {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .compare-table th,
            .compare-table td {
                padding: 12px 14px;
                font-size: 0.8rem;
            }
            .logo {
                font-size: 1rem;
            }
            .header-actions {
                gap: 6px;
            }
            .header-actions .btn-login {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
            .header-actions .btn-signup {
                padding: 6px 14px;
                font-size: 0.75rem;
            }
        }

/* roulang page: article */
:root {
            --primary-bg: #0A2E1C;
            --secondary-bg: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --border-gold: #C5A059;
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --line-height-body: 1.6;
        }

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

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

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

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

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

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 46, 28, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
            padding: 0;
            transition: var(--transition-smooth);
        }

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

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: -0.3px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo i {
            font-size: 1.5rem;
            color: var(--accent-gold);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav li a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mint);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
            transition: var(--transition-fast);
        }

        .main-nav li a:hover,
        .main-nav li a.active {
            color: var(--accent-gold);
        }

        .main-nav li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            transition: width var(--transition-smooth);
        }

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

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

        .btn-login {
            background: transparent;
            color: var(--accent-gold);
            border: 1px solid var(--accent-gold);
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }

        .btn-login:hover {
            background: rgba(255, 215, 0, 0.1);
            border-color: #fff;
            color: #fff;
        }

        .btn-signup {
            background: var(--accent-gold);
            color: var(--primary-bg);
            padding: 10px 24px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: var(--shadow-gold);
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            background: #fff;
            color: var(--primary-bg);
            box-shadow: 0 6px 24px rgba(255, 215, 0, 0.5);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--accent-gold);
            font-size: 1.6rem;
            padding: 4px;
        }

        .page-header {
            padding: 120px 0 50px;
            background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
            text-align: left;
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
        }

        .page-header h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .breadcrumb {
            display: flex;
            gap: 8px;
            color: var(--text-mint);
            font-size: 0.9rem;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

        .breadcrumb span {
            color: var(--text-mint);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            padding: 60px 0;
            align-items: start;
        }

        .article-main {
            background: var(--secondary-bg);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid rgba(255, 215, 0, 0.15);
            box-shadow: var(--shadow-card);
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            padding-bottom: 24px;
            margin-bottom: 28px;
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
            color: var(--text-mint);
            font-size: 0.9rem;
        }

        .article-meta i {
            color: var(--accent-gold);
            margin-right: 6px;
        }

        .article-meta .category-tag {
            background: rgba(211, 47, 47, 0.2);
            color: var(--accent-red);
            padding: 4px 14px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.85rem;
            border: 1px solid var(--accent-red);
        }

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

        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            margin: 32px 0 16px;
        }

        .article-body h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--accent-gold);
            margin: 24px 0 12px;
        }

        .article-body p {
            margin-bottom: 16px;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 24px;
            margin-bottom: 20px;
        }

        .article-body li {
            margin-bottom: 8px;
        }

        .article-body strong {
            color: #fff;
        }

        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .sidebar-card {
            background: var(--secondary-bg);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid rgba(255, 215, 0, 0.2);
        }

        .sidebar-card h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 16px;
            border-bottom: 2px solid rgba(255, 215, 0, 0.3);
            padding-bottom: 10px;
        }

        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .sidebar-card ul li {
            margin-bottom: 12px;
        }

        .sidebar-card ul li a {
            color: var(--text-mint);
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-fast);
        }

        .sidebar-card ul li a i {
            color: var(--accent-gold);
            font-size: 0.8rem;
        }

        .sidebar-card ul li a:hover {
            color: #fff;
            transform: translateX(4px);
        }

        .progress-ring-card {
            background: var(--secondary-bg);
            border-radius: var(--radius-md);
            padding: 28px;
            text-align: center;
            border: 2px solid var(--accent-gold);
            box-shadow: var(--shadow-gold);
        }

        .progress-circle {
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: conic-gradient(var(--accent-gold) 0% 72%, rgba(255, 255, 255, 0.1) 72% 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            position: relative;
        }

        .progress-inner {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--accent-gold);
        }

        .progress-ring-card h4 {
            color: #fff;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .progress-ring-card p {
            color: var(--text-mint);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }

        .faq-section {
            padding: 60px 0;
            background: rgba(18, 62, 37, 0.5);
        }

        .faq-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 40px;
            text-align: left;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 800px;
        }

        .faq-item {
            background: var(--secondary-bg);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 215, 0, 0.25);
            overflow: hidden;
            transition: var(--transition-smooth);
        }

        .faq-question {
            width: 100%;
            background: transparent;
            color: #fff;
            padding: 20px 24px;
            font-size: 1.1rem;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            text-align: left;
            border: none;
            cursor: pointer;
        }

        .faq-question i {
            color: var(--accent-gold);
            transition: transform 0.3s ease;
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-mint);
            display: none;
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

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

        .cta-section {
            padding: 60px 0;
            background: radial-gradient(circle at center, rgba(255, 215, 0, 0.1) 0%, transparent 70%);
            text-align: center;
        }

        .cta-card {
            background: var(--secondary-bg);
            border-radius: var(--radius-lg);
            padding: 48px 32px;
            border: 2px solid var(--accent-gold);
            box-shadow: var(--shadow-gold);
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-card h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-card p {
            color: var(--text-mint);
            font-size: 1.1rem;
            margin-bottom: 28px;
        }

        .btn-cta-gold {
            background: var(--accent-gold);
            color: var(--primary-bg);
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: var(--shadow-gold);
            transition: var(--transition-smooth);
        }

        .btn-cta-gold:hover {
            background: #fff;
            color: var(--primary-bg);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255, 215, 0, 0.5);
        }

        .site-footer {
            background: #061c10;
            border-top: 2px solid var(--accent-gold);
            padding: 48px 0 24px;
            color: var(--text-mint);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: var(--accent-gold);
            font-weight: 700;
            margin-bottom: 16px;
            font-size: 1.1rem;
        }

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

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

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

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 215, 0, 0.15);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--accent-gold);
            margin-right: 8px;
            margin-top: 8px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 215, 0, 0.2);
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
        }

        .not-found-message {
            text-align: center;
            padding: 80px 20px;
            color: var(--text-mint);
        }

        .not-found-message i {
            font-size: 3rem;
            color: var(--accent-gold);
            margin-bottom: 20px;
        }

        .not-found-message h2 {
            color: #fff;
            margin-bottom: 12px;
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: rgba(10, 46, 28, 0.98);
                backdrop-filter: blur(12px);
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid var(--accent-gold);
            }

            .main-nav.open {
                display: flex;
            }

            .mobile-toggle {
                display: block;
            }

            .header-actions {
                gap: 8px;
            }

            .btn-login,
            .btn-signup {
                padding: 6px 16px;
                font-size: 0.8rem;
            }

            .page-header h1 {
                font-size: 1.8rem;
            }

            .article-main {
                padding: 24px;
            }

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

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

        @media (max-width: 520px) {
            .logo {
                font-size: 1rem;
            }

            .header-actions {
                gap: 6px;
            }

            .btn-login {
                padding: 6px 12px;
                font-size: 0.75rem;
            }

            .btn-signup {
                padding: 6px 14px;
                font-size: 0.75rem;
            }

            .page-header {
                padding: 110px 0 40px;
            }

            .page-header h1 {
                font-size: 1.5rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #0A2E1C;
            --secondary-bg: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --border-gold: #C5A059;
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --line-height-body: 1.6;
        }

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

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

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

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

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

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 46, 28, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
            padding: 0;
            transition: var(--transition-smooth);
        }

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

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: -0.3px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo i {
            font-size: 1.5rem;
            color: var(--accent-gold);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav li a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mint);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
            transition: var(--transition-fast);
        }

        .main-nav li a:hover,
        .main-nav li a.active {
            color: var(--accent-gold);
        }

        .main-nav li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            transition: width var(--transition-smooth);
        }

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

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

        .btn-login {
            background: transparent;
            color: var(--accent-gold);
            border: 1px solid var(--accent-gold);
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }

        .btn-login:hover {
            background: rgba(255, 215, 0, 0.1);
            border-color: #fff;
            color: #fff;
        }

        .btn-signup {
            background: var(--accent-gold);
            color: var(--primary-bg);
            padding: 10px 24px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: var(--shadow-gold);
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            background: #fff;
            color: var(--primary-bg);
            box-shadow: 0 6px 24px rgba(255, 215, 0, 0.5);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--accent-gold);
            font-size: 1.6rem;
            padding: 4px;
        }

        /* Hero Video Section */
        .hero-video {
            position: relative;
            width: 100%;
            height: 80vh;
            min-height: 500px;
            overflow: hidden;
            margin-top: 72px;
            background: var(--secondary-bg);
        }

        .hero-video-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, rgba(10, 46, 28, 0.7) 0%, rgba(10, 46, 28, 0.85) 60%, var(--primary-bg) 100%);
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-video-content {
            text-align: center;
            max-width: 800px;
            padding: 0 20px;
        }

        .hero-video-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 215, 0, 0.2);
            border: 1px solid rgba(255, 215, 0, 0.5);
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-gold);
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }

        .hero-video-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            color: #fff;
        }

        .hero-video-content p {
            font-size: 1.15rem;
            color: var(--text-mint);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .btn-play {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: var(--accent-gold);
            color: var(--primary-bg);
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 8px 32px rgba(255, 215, 0, 0.4);
            transition: var(--transition-smooth);
            margin-right: 16px;
        }

        .btn-play i {
            font-size: 1.4rem;
        }

        .btn-play:hover {
            background: #fff;
            color: var(--primary-bg);
            box-shadow: 0 12px 40px rgba(255, 215, 0, 0.6);
            transform: translateY(-2px);
        }

        .btn-trial {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--accent-gold);
            border: 2px solid var(--accent-gold);
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            transition: var(--transition-smooth);
        }

        .btn-trial:hover {
            background: rgba(255, 215, 0, 0.1);
            color: #fff;
            border-color: #fff;
        }

        .hero-video-bg {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            min-width: 100%;
            min-height: 100%;
            width: auto;
            height: auto;
            z-index: 1;
            object-fit: cover;
        }

        /* Section: KPI Dashboard */
        .kpi-dashboard {
            padding: 60px 0;
            background: var(--primary-bg);
        }

        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .kpi-card {
            background: rgba(255, 215, 0, 0.05);
            border: 1px solid rgba(255, 215, 0, 0.15);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition-smooth);
        }

        .kpi-card:hover {
            border-color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
            transform: translateY(-4px);
            box-shadow: var(--shadow-gold);
        }

        .kpi-icon {
            font-size: 2.5rem;
            color: var(--accent-gold);
            margin-bottom: 16px;
        }

        .kpi-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-gold);
            margin-bottom: 8px;
        }

        .kpi-label {
            font-size: 0.9rem;
            color: var(--text-mint);
            font-weight: 500;
        }

        /* Section: Strategy Matrix */
        .strategy-matrix {
            padding: 80px 0;
            background: linear-gradient(180deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
        }

        .section-header {
            margin-bottom: 48px;
        }

        .section-label {
            display: inline-block;
            background: rgba(255, 215, 0, 0.15);
            color: var(--accent-gold);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-mint);
            max-width: 700px;
        }

        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .strategy-card {
            background: rgba(10, 46, 28, 0.6);
            border: 1px solid rgba(255, 215, 0, 0.2);
            border-radius: var(--radius-md);
            padding: 40px 32px;
            display: flex;
            gap: 24px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .strategy-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-gold), transparent);
            opacity: 0;
            transition: var(--transition-smooth);
        }

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

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

        .strategy-icon-wrap {
            flex-shrink: 0;
            width: 60px;
            height: 60px;
            background: rgba(255, 215, 0, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--accent-gold);
        }

        .strategy-info h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .strategy-info p {
            font-size: 0.95rem;
            color: var(--text-mint);
            line-height: 1.7;
            margin: 0;
        }

        .strategy-tag {
            display: inline-block;
            background: rgba(211, 47, 47, 0.2);
            color: var(--accent-red);
            padding: 4px 12px;
            border-radius: 16px;
            font-size: 0.75rem;
            font-weight: 700;
            margin-top: 12px;
            letter-spacing: 0.3px;
        }

        /* Section: Comparison */
        .comparison-section {
            padding: 80px 0;
            background: var(--primary-bg);
        }

        .comparison-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 215, 0, 0.2);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background: rgba(10, 46, 28, 0.5);
        }

        .comparison-table thead th {
            background: rgba(255, 215, 0, 0.1);
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.95rem;
            padding: 20px;
            text-align: left;
            border-bottom: 2px solid var(--accent-gold);
        }

        .comparison-table tbody td {
            padding: 20px;
            font-size: 0.9rem;
            color: var(--text-mint);
            border-bottom: 1px solid rgba(255, 215, 0, 0.1);
        }

        .comparison-table tbody tr:hover {
            background: rgba(255, 215, 0, 0.03);
        }

        .table-badge-success {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 16px;
            font-size: 0.8rem;
            font-weight: 700;
            background: rgba(0, 200, 83, 0.2);
            color: #00c853;
        }

        .table-badge-warning {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 16px;
            font-size: 0.8rem;
            font-weight: 700;
            background: rgba(255, 171, 0, 0.2);
            color: #ffab00;
        }

        /* Section: FAQ */
        .faq-section {
            padding: 80px 0;
            background: linear-gradient(180deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
        }

        .faq-list {
            max-width: 800px;
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
            padding: 24px 0;
            cursor: pointer;
            transition: var(--transition-fast);
        }

        .faq-item:first-child {
            border-top: 1px solid rgba(255, 215, 0, 0.15);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .faq-question h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin: 0;
            flex: 1;
        }

        .faq-toggle {
            font-size: 1.2rem;
            color: var(--accent-gold);
            transition: var(--transition-smooth);
            flex-shrink: 0;
        }

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

        .faq-answer p {
            color: var(--text-mint);
            font-size: 0.95rem;
            line-height: 1.7;
            padding-top: 0;
        }

        .faq-item.active .faq-toggle {
            transform: rotate(45deg);
        }

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

        .faq-item.active .faq-answer p {
            padding-top: 12px;
        }

        /* CTA Section */
        .cta-section {
            padding: 80px 0;
            background: var(--primary-bg);
            text-align: center;
        }

        .cta-box {
            background: linear-gradient(135deg, var(--secondary-bg) 0%, rgba(10, 46, 28, 0.8) 100%);
            border: 2px solid rgba(255, 215, 0, 0.3);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            font-size: 1.05rem;
            color: var(--text-mint);
            margin-bottom: 32px;
            position: relative;
            z-index: 1;
        }

        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent-gold);
            color: var(--primary-bg);
            padding: 16px 44px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: var(--shadow-gold);
            transition: var(--transition-smooth);
            position: relative;
            z-index: 1;
        }

        .btn-cta-primary:hover {
            background: #fff;
            color: var(--primary-bg);
            box-shadow: 0 10px 36px rgba(255, 215, 0, 0.5);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: var(--secondary-bg);
            border-top: 2px solid rgba(255, 215, 0, 0.2);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 16px;
        }

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

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

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

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

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid rgba(255, 215, 0, 0.3);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--accent-gold);
            font-weight: 600;
            margin-right: 8px;
            margin-top: 8px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 215, 0, 0.1);
            padding-top: 24px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-mint);
            margin: 0;
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 999;
            width: 56px;
            height: 56px;
            background: var(--primary-bg);
            border: 2px solid var(--accent-gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-gold);
            box-shadow: var(--shadow-gold);
            transition: var(--transition-smooth);
            opacity: 0.75;
            animation: floatVertical 3s ease-in-out infinite;
        }

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

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

        /* Mobile Navigation */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 20px;
            }
            .main-nav li a {
                font-size: 0.85rem;
            }
            .hero-video-content h1 {
                font-size: 2.2rem;
            }
            .kpi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: rgba(10, 46, 28, 0.98);
                flex-direction: column;
                padding: 20px;
                gap: 16px;
                border-bottom: 2px solid rgba(255, 215, 0, 0.3);
            }
            .main-nav.open {
                display: flex;
            }
            .header-actions .btn-login,
            .header-actions .btn-signup {
                display: inline-flex;
            }
            .hero-video {
                height: 60vh;
                min-height: 400px;
            }
            .hero-video-content h1 {
                font-size: 1.8rem;
            }
            .hero-video-content p {
                font-size: 0.95rem;
            }
            .btn-play,
            .btn-trial {
                padding: 12px 28px;
                font-size: 0.95rem;
                margin-bottom: 12px;
            }
            .kpi-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .strategy-card {
                flex-direction: column;
                padding: 24px;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .cta-box {
                padding: 40px 20px;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .fab-floating {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 1rem;
            }
            .header-actions {
                gap: 8px;
            }
            .btn-login,
            .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .hero-video-content h1 {
                font-size: 1.5rem;
            }
            .kpi-grid {
                grid-template-columns: 1fr;
            }
            .comparison-table-wrap {
                font-size: 0.8rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary-bg: #0A2E1C;
            --secondary-bg: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --border-gold: #C5A059;
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --line-height-body: 1.6;
        }

        * {
            box-sizing: border-box;
        }

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

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

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

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

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

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

        h1 {
            font-size: 2.8rem;
            margin-bottom: 0.8em;
        }
        h2 {
            font-size: 2rem;
            margin-bottom: 0.6em;
        }
        h3 {
            font-size: 1.5rem;
            margin-bottom: 0.4em;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 46, 28, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
            padding: 0;
            transition: var(--transition-smooth);
        }

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

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: -0.3px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo i {
            font-size: 1.5rem;
            color: var(--accent-gold);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav li a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mint);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
            transition: var(--transition-fast);
        }

        .main-nav li a:hover,
        .main-nav li a.active {
            color: var(--accent-gold);
        }

        .main-nav li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            transition: width var(--transition-smooth);
        }

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

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

        .btn-login {
            background: transparent;
            color: var(--accent-gold);
            border: 1px solid var(--accent-gold);
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
            cursor: pointer;
        }

        .btn-login:hover {
            background: rgba(255, 215, 0, 0.1);
            border-color: #fff;
            color: #fff;
        }

        .btn-signup {
            background: var(--accent-gold);
            color: var(--primary-bg);
            padding: 10px 24px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: var(--shadow-gold);
            transition: var(--transition-smooth);
            cursor: pointer;
        }

        .btn-signup:hover {
            background: #fff;
            color: var(--primary-bg);
            box-shadow: 0 6px 24px rgba(255, 215, 0, 0.5);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--accent-gold);
            font-size: 1.6rem;
            padding: 4px;
            cursor: pointer;
        }

        @media (max-width: 768px) {
            .main-nav {
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: rgba(10, 46, 28, 0.98);
                flex-direction: column;
                gap: 0;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease;
                backdrop-filter: blur(12px);
            }
            .main-nav.active-mobile {
                max-height: 400px;
            }
            .main-nav li {
                width: 100%;
                text-align: center;
            }
            .main-nav li a {
                display: block;
                padding: 16px 20px;
                border-bottom: 1px solid rgba(255, 215, 0, 0.1);
            }
            .main-nav li a::after {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .header-actions .btn-login,
            .header-actions .btn-signup {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 1rem;
            }
            .header-actions {
                gap: 8px;
            }
            .btn-login {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
            .btn-signup {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
        }

        /* Hero Section */
        .hero {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
            position: relative;
            overflow: hidden;
            min-height: 70vh;
            display: flex;
            align-items: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 650px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 215, 0, 0.15);
            border: 1px solid rgba(255, 215, 0, 0.4);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-gold);
            margin-bottom: 24px;
        }

        .hero-badge i {
            font-size: 1rem;
        }

        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            color: #fff;
        }

        .hero p {
            font-size: 1.1rem;
            color: var(--text-mint);
            margin-bottom: 32px;
            line-height: 1.7;
            max-width: 550px;
        }

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

        .btn-hero-primary {
            background: var(--accent-gold);
            color: var(--primary-bg);
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: var(--shadow-gold);
            transition: var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-hero-primary:hover {
            background: #fff;
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.6);
            transform: translateY(-2px);
        }

        .btn-hero-outline {
            background: transparent;
            color: var(--accent-gold);
            border: 2px solid var(--accent-gold);
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition-smooth);
        }

        .btn-hero-outline:hover {
            background: rgba(255, 215, 0, 0.1);
            border-color: #fff;
            color: #fff;
        }

        @media (max-width: 768px) {
            .hero {
                min-height: auto;
                padding: 120px 0 60px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1rem;
            }
        }

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

        .section-dark {
            background: var(--secondary-bg);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent-gold);
        }

        .section-subtitle {
            color: var(--text-mint);
            font-size: 1rem;
            margin-bottom: 48px;
            max-width: 700px;
        }

        /* Stats Dashboard */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 215, 0, 0.2);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition-smooth);
        }

        .stat-card:hover {
            border-color: var(--accent-gold);
            box-shadow: 0 8px 24px rgba(255, 215, 0, 0.15);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent-gold);
            display: block;
            margin-bottom: 8px;
            line-height: 1;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-mint);
            font-weight: 500;
        }

        .stat-card i {
            font-size: 1.8rem;
            color: var(--accent-gold);
            margin-bottom: 12px;
            display: block;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Service Matrix */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .matrix-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .matrix-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--accent-gold);
            transform: scaleX(0);
            transition: transform var(--transition-smooth);
        }

        .matrix-card:hover::before {
            transform: scaleX(1);
        }

        .matrix-card:hover {
            border-color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.05);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5);
            transform: translateY(-6px);
        }

        .matrix-icon {
            width: 56px;
            height: 56px;
            background: rgba(255, 215, 0, 0.15);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-gold);
            margin-bottom: 20px;
        }

        .matrix-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
            color: #fff;
        }

        .matrix-card p {
            color: var(--text-mint);
            font-size: 0.95rem;
            line-height: 1.7;
            margin: 0;
        }

        @media (max-width: 768px) {
            .matrix-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* Comparison Table */
        .comparison-table-wrap {
            overflow-x: auto;
            margin-top: 40px;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .comparison-table th {
            background: var(--secondary-bg);
            color: var(--accent-gold);
            font-weight: 700;
            padding: 16px 20px;
            text-align: left;
            font-size: 0.95rem;
            border-bottom: 2px solid rgba(255, 215, 0, 0.4);
        }

        .comparison-table td {
            padding: 14px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-mint);
            font-size: 0.9rem;
        }

        .comparison-table tr:hover td {
            background: rgba(255, 215, 0, 0.03);
        }

        .badge-success {
            display: inline-block;
            background: rgba(0, 200, 100, 0.15);
            color: #00c864;
            padding: 4px 12px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.8rem;
        }

        .badge-warning {
            display: inline-block;
            background: rgba(255, 170, 0, 0.15);
            color: #ffaa00;
            padding: 4px 12px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.8rem;
        }

        /* FAQ */
        .faq-list {
            margin-top: 40px;
            list-style: none;
            padding: 0;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: rgba(255, 215, 0, 0.4);
        }

        .faq-question {
            padding: 18px 24px;
            font-weight: 700;
            font-size: 1.05rem;
            color: #fff;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: transparent;
            width: 100%;
            border: none;
        }

        .faq-question i {
            color: var(--accent-gold);
            transition: transform var(--transition-smooth);
        }

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

        .faq-answer p {
            padding: 0 24px 18px;
            margin: 0;
            color: var(--text-mint);
            font-size: 0.95rem;
            line-height: 1.7;
        }

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

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

        /* CTA Section */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .cta-content h2 {
            font-size: 2.2rem;
            margin-bottom: 16px;
            color: #fff;
        }

        .cta-content p {
            color: var(--text-mint);
            margin-bottom: 32px;
            font-size: 1.05rem;
        }

        .btn-cta-large {
            background: var(--accent-gold);
            color: var(--primary-bg);
            padding: 16px 40px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: var(--shadow-gold);
            transition: var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-cta-large:hover {
            background: #fff;
            box-shadow: 0 10px 36px rgba(255, 215, 0, 0.6);
            transform: translateY(-3px);
        }

        @media (max-width: 768px) {
            .cta-content h2 {
                font-size: 1.8rem;
            }
        }

        /* Footer */
        .site-footer {
            background: #071f12;
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255, 215, 0, 0.2);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-size: 1.1rem;
            color: var(--accent-gold);
            margin-bottom: 20px;
        }

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

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

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

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

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid rgba(255, 215, 0, 0.3);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--accent-gold);
            margin-right: 8px;
            margin-top: 8px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-mint);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(10, 46, 28, 0.9);
            border: 2px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            cursor: pointer;
            transition: all var(--transition-smooth);
            animation: float-gentle 3s ease-in-out infinite;
        }

        .fab-floating:hover {
            transform: scale(1.15);
            box-shadow: 0 6px 28px rgba(255, 215, 0, 0.5);
            background: var(--secondary-bg);
        }

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

        @media (max-width: 768px) {
            .fab-floating {
                width: 48px;
                height: 48px;
                bottom: 5rem;
                left: 0.8rem;
            }
        }

        .section {
            padding: 70px 0;
        }

        .section-dark {
            background: var(--secondary-bg);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent-gold);
        }

        .section-subtitle {
            color: var(--text-mint);
            font-size: 1rem;
            margin-bottom: 0;
            max-width: 700px;
        }

/* roulang page: category3 */
:root {
            --primary-bg: #0A2E1C;
            --secondary-bg: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --border-gold: #C5A059;
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --line-height-body: 1.6;
        }
        * {
            box-sizing: border-box;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-heading);
            background: var(--primary-bg);
            color: var(--text-white);
            line-height: var(--line-height-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-fast);
        }
        button,
        .button {
            cursor: pointer;
            border: none;
            outline: none;
            font-family: inherit;
            transition: var(--transition-smooth);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 46, 28, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
            padding: 0;
            transition: var(--transition-smooth);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: -0.3px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i {
            font-size: 1.5rem;
            color: var(--accent-gold);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .main-nav li a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mint);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
            transition: var(--transition-fast);
        }
        .main-nav li a:hover,
        .main-nav li a.active {
            color: var(--accent-gold);
        }
        .main-nav li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            transition: width var(--transition-smooth);
        }
        .main-nav li a:hover::after,
        .main-nav li a.active::after {
            width: 100%;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            color: var(--accent-gold);
            border: 1px solid var(--accent-gold);
            padding: 8px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }
        .btn-login:hover {
            background: rgba(255, 215, 0, 0.1);
            border-color: #fff;
            color: #fff;
        }
        .btn-signup {
            background: var(--accent-gold);
            color: var(--primary-bg);
            padding: 10px 24px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: var(--shadow-gold);
            transition: var(--transition-smooth);
        }
        .btn-signup:hover {
            background: #fff;
            color: var(--primary-bg);
            box-shadow: 0 6px 24px rgba(255, 215, 0, 0.5);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--accent-gold);
            font-size: 1.6rem;
            padding: 4px;
        }
        /* Banner Section */
        .page-banner {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
            position: relative;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -15%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .banner-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .banner-text h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            color: #fff;
        }
        .banner-text h1 span {
            color: var(--accent-gold);
        }
        .banner-text p {
            font-size: 1.1rem;
            color: var(--text-mint);
            margin-bottom: 30px;
            line-height: 1.7;
        }
        .banner-visual {
            position: relative;
        }
        .banner-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 2px solid rgba(255, 215, 0, 0.3);
        }
        .banner-visual::after {
            content: '';
            position: absolute;
            top: -12px;
            left: -12px;
            right: 12px;
            bottom: 12px;
            border: 1px solid rgba(255, 215, 0, 0.15);
            border-radius: var(--radius-lg);
            z-index: -1;
        }
        /* Section Shared */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--secondary-bg);
        }
        .section-header {
            margin-bottom: 50px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-mint);
            max-width: 700px;
        }
        /* Data Metrics */
        .metrics-row {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
        }
        .metric-card {
            background: var(--primary-bg);
            border: 1px solid rgba(255, 215, 0, 0.25);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            flex: 1 1 200px;
            text-align: center;
            transition: var(--transition-smooth);
        }
        .metric-card:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-gold);
            transform: translateY(-4px);
        }
        .metric-icon {
            font-size: 2.2rem;
            color: var(--accent-gold);
            margin-bottom: 16px;
        }
        .metric-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.1;
        }
        .metric-label {
            font-size: 0.95rem;
            color: var(--text-mint);
            margin-top: 6px;
        }
        /* Mistake Grid */
        .mistake-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 30px;
        }
        .mistake-item {
            background: var(--primary-bg);
            border: 1px solid rgba(255, 215, 0, 0.15);
            border-radius: var(--radius-lg);
            padding: 32px;
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .mistake-item:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-card);
        }
        .mistake-rank {
            width: 48px;
            height: 48px;
            background: var(--accent-red);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        .mistake-item h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin: 0;
        }
        .mistake-item p {
            font-size: 0.95rem;
            color: var(--text-mint);
            margin: 0;
            line-height: 1.7;
        }
        .mistake-tag {
            display: inline-block;
            background: rgba(255, 215, 0, 0.1);
            color: var(--accent-gold);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        /* Compare Table Style */
        .compare-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .compare-col {
            background: var(--primary-bg);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            border: 1px solid rgba(255, 215, 0, 0.2);
        }
        .compare-col.bad {
            border-left: 4px solid var(--accent-red);
        }
        .compare-col.good {
            border-left: 4px solid var(--accent-gold);
        }
        .compare-col h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .compare-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .compare-col li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.95rem;
            color: var(--text-mint);
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .compare-col li i {
            margin-top: 3px;
        }
        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--primary-bg);
            border: 1px solid rgba(255, 215, 0, 0.2);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition-fast);
        }
        .faq-question {
            width: 100%;
            background: transparent;
            color: #fff;
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition-fast);
        }
        .faq-question i {
            color: var(--accent-gold);
            transition: transform 0.3s ease;
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-mint);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-item:hover {
            border-color: var(--accent-gold);
        }
        /* CTA */
        .cta-section {
            text-align: center;
            padding: 80px 0;
            background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
            border-top: 1px solid rgba(255, 215, 0, 0.2);
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-mint);
            margin-bottom: 30px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta {
            display: inline-block;
            background: var(--accent-gold);
            color: var(--primary-bg);
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: var(--shadow-gold);
            transition: var(--transition-smooth);
        }
        .btn-cta:hover {
            background: #fff;
            color: var(--primary-bg);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.5);
            transform: translateY(-2px);
        }
        /* Footer */
        .site-footer {
            background: #051A10;
            padding: 50px 0 20px;
            border-top: 1px solid rgba(255, 215, 0, 0.2);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--text-mint);
            font-size: 0.9rem;
            transition: var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--accent-gold);
        }
        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid rgba(255, 215, 0, 0.3);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--accent-gold);
            margin-right: 8px;
            margin-top: 6px;
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 215, 0, 0.1);
            font-size: 0.85rem;
            color: var(--text-mint);
        }
        /* FAB */
        .fab {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-bg);
            border: 2px solid var(--accent-gold);
            box-shadow: var(--shadow-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-gold);
            opacity: 0.7;
            transition: var(--transition-smooth);
            animation: floatFab 3s ease-in-out infinite;
        }
        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 6px 24px rgba(255, 215, 0, 0.5);
        }
        @keyframes floatFab {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            background: var(--accent-red);
            border-radius: 50%;
            border: 2px solid var(--primary-bg);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .banner-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .banner-text h1 {
                font-size: 2rem;
            }
            .compare-block {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: rgba(10, 46, 28, 0.98);
                padding: 20px;
                gap: 16px;
                border-bottom: 1px solid rgba(255, 215, 0, 0.2);
            }
            .main-nav.open {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .header-actions {
                gap: 8px;
            }
            .btn-login, .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .page-banner {
                padding: 120px 0 60px;
            }
            .banner-text h1 {
                font-size: 1.8rem;
            }
            .mistake-grid {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 50px 0;
            }
            .fab {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
            }
        }