/* roulang page: index */
:root {
            --bg-deep: #030712;
            --bg-surface: #081229;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-accent: #60A5FA;
            --border-subtle: rgba(37, 99, 235, 0.15);
            --border-glow: rgba(37, 99, 235, 0.4);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6), 0 1px 0 rgba(37, 99, 235, 0.2) inset;
            --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.35);
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --font-heading: 'Segoe UI', 'Inter', -apple-system, system-ui, sans-serif;
            --font-body: 'Segoe UI', 'Inter', -apple-system, system-ui, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

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

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 1rem;
        }

        h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 800;
            background: linear-gradient(135deg, #F8FAFC 0%, #60A5FA 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            color: var(--text-primary);
        }

        h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.5rem);
            color: var(--text-accent);
        }

        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* NAVIGATION */
        .navbar-custom {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1050;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
            padding: 12px 0;
        }

        .navbar-custom .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .navbar-brand-custom {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
            letter-spacing: -0.01em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            transition: var(--transition-base);
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-secondary);
            transition: width 0.3s ease;
        }

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

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-primary);
            color: var(--accent-secondary);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-base);
        }

        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            color: var(--text-primary);
            border-color: var(--accent-secondary);
        }

        .btn-signup {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: 1px solid rgba(56, 189, 248, 0.5);
            color: #FFFFFF;
            padding: 9px 22px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .btn-signup::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
            transition: left 0.5s ease;
        }

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

        .btn-signup:hover {
            background: linear-gradient(135deg, #1D4ED8, #1E40AF);
            border-color: var(--accent-secondary);
            box-shadow: 0 0 30px rgba(37, 99, 235, 0.7);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }

        @media (max-width: 992px) {
            .nav-links {
                display: none;
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(3, 7, 18, 0.98);
                backdrop-filter: blur(25px);
                flex-direction: column;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid var(--border-subtle);
                z-index: 1051;
            }

            .nav-links.active {
                display: flex;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .nav-actions {
                margin-left: auto;
            }
        }

        @media (max-width: 576px) {
            .btn-login {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .btn-signup {
                padding: 7px 16px;
                font-size: 0.8rem;
            }
        }

        /* HERO SECTION */
        .hero-section {
            padding-top: 120px;
            padding-bottom: 80px;
            background: radial-gradient(ellipse at 10% 20%, rgba(37, 99, 235, 0.15), transparent 60%),
                        radial-gradient(ellipse at 80% 80%, rgba(56, 189, 248, 0.08), transparent 60%),
                        var(--bg-deep);
            position: relative;
            overflow: hidden;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .hero-content h1 {
            margin-bottom: 1.2rem;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            line-height: 1.7;
        }

        .hero-form {
            background: rgba(8, 18, 41, 0.9);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .hero-form input {
            background: rgba(3, 7, 18, 0.8);
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            padding: 12px 18px;
            border-radius: 50px;
            font-size: 0.95rem;
            outline: none;
            transition: var(--transition-base);
        }

        .hero-form input:focus {
            border-color: var(--accent-primary);
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.25);
        }

        .hero-form button {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: none;
            color: #FFFFFF;
            padding: 12px 24px;
            border-radius: 50px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.5);
        }

        .hero-form button:hover {
            box-shadow: 0 8px 25px rgba(37, 99, 235, 0.8);
        }

        .hero-visual {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .rate-card-large {
            background: var(--bg-surface);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }

        .rate-number {
            font-size: 3.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, #FBBF24, #F59E0B);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: block;
            line-height: 1;
            margin-bottom: 0.5rem;
        }

        @media (max-width: 768px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-section {
                padding-top: 100px;
                padding-bottom: 60px;
            }
        }

        /* GENERAL SECTION */
        .section-block {
            padding: 70px 0;
        }

        .section-bg-alt {
            background: var(--bg-surface);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

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

        .section-header h2 {
            color: var(--text-primary);
            position: relative;
            padding-bottom: 16px;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 4px;
            background: var(--accent-primary);
            border-radius: 2px;
        }

        .divider-glow {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
            margin: 0 auto;
            width: 200px;
        }

        /* CALENDAR */
        .calendar-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .calendar-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: var(--transition-base);
        }

        .calendar-card:hover {
            border-color: var(--accent-primary);
            box-shadow: var(--shadow-glow);
        }

        /* TOPIC CARDS */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .topic-card {
            background: linear-gradient(135deg, rgba(8,18,41,0.9), rgba(3,7,18,0.95));
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .topic-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-primary), transparent);
        }

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

        /* INSIGHT */
        .insight-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .insight-item {
            background: var(--bg-surface);
            border-left: 4px solid var(--accent-primary);
            padding: 18px 22px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            transition: var(--transition-base);
        }

        .insight-item:hover {
            background: rgba(37, 99, 235, 0.05);
            border-left-color: var(--accent-secondary);
        }

        /* CMS NEWS */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 24px;
        }

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

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

        .news-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .news-card-body {
            padding: 16px;
            flex: 1;
        }

        /* DATA ANALYSIS */
        .data-badge-list {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .data-badge {
            background: var(--bg-surface);
            border: 1px solid var(--border-glow);
            border-radius: 50px;
            padding: 12px 24px;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
            transition: var(--transition-base);
        }

        .data-badge:hover {
            transform: scale(1.05);
            box-shadow: 0 0 30px rgba(37, 99, 235, 0.6);
        }

        /* GUARANTEE */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }

        .guarantee-card {
            text-align: left;
            padding: 24px 20px;
            background: rgba(8,18,41,0.6);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            transition: var(--transition-base);
        }

        .guarantee-card i {
            font-size: 2rem;
            color: var(--accent-primary);
            margin-bottom: 12px;
            display: block;
        }

        /* SUBSCRIBE */
        .subscribe-bar {
            background: linear-gradient(135deg, var(--bg-surface), #0A1A3A);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            justify-content: space-between;
        }

        .subscribe-bar input {
            background: rgba(3,7,18,0.8);
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            padding: 12px 20px;
            border-radius: 50px;
            flex: 1;
            min-width: 200px;
            outline: none;
        }

        .subscribe-bar button {
            background: var(--accent-primary);
            border: none;
            color: #FFF;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: var(--shadow-glow);
        }

        /* FOOTER */
        .footer-custom {
            background: rgba(3,7,18,0.98);
            border-top: 1px solid var(--border-subtle);
            padding: 40px 0 20px;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            color: var(--text-secondary);
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 24px;
            bottom: 96px;
            width: 56px;
            height: 56px;
            background: rgba(8,18,41,0.85);
            backdrop-filter: blur(15px);
            border: 1.5px solid transparent;
            background-clip: padding-box;
            border-radius: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            font-size: 1.5rem;
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
            transition: var(--transition-base);
            z-index: 1050;
            cursor: pointer;
        }

        .fab-floating:hover {
            box-shadow: 0 0 35px rgba(56, 189, 248, 0.8);
            transform: scale(1.05);
        }

        @media (max-width: 768px) {
            .fab-floating {
                left: 16px;
                bottom: 80px;
            }
        }

        .glow-text {
            text-shadow: 0 0 12px rgba(56,189,248,0.5);
        }

        .chamfer-card {
            clip-path: polygon(0 8px, 8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
        }

/* roulang page: article */
:root {
            --bg-deep: #030712;
            --bg-surface: #081229;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-accent: #60A5FA;
            --border-subtle: rgba(37, 99, 235, 0.15);
            --border-glow: rgba(37, 99, 235, 0.4);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6), 0 1px 0 rgba(37, 99, 235, 0.2) inset;
            --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.35);
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --font-heading: 'Segoe UI', 'Inter', -apple-system, system-ui, sans-serif;
            --font-body: 'Segoe UI', 'Inter', -apple-system, system-ui, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            background-color: var(--bg-deep);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: 76px;
        }

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

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

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

        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* NAVIGATION */
        .navbar-custom {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1050;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
            padding: 12px 0;
        }

        .navbar-custom .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .navbar-brand-custom {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
            letter-spacing: -0.01em;
            text-decoration: none;
        }

        .navbar-brand-custom:hover {
            opacity: 0.9;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            transition: var(--transition-base);
            text-decoration: none;
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-secondary);
            transition: width 0.3s ease;
        }

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

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-primary);
            color: var(--accent-secondary);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-base);
            text-decoration: none;
            display: inline-block;
        }

        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            color: var(--text-primary);
            border-color: var(--accent-secondary);
        }

        .btn-signup {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: 1px solid rgba(56, 189, 248, 0.5);
            color: #FFFFFF;
            padding: 9px 22px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
            text-decoration: none;
            display: inline-block;
        }

        .btn-signup::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
            transition: left 0.5s ease;
        }

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

        .btn-signup:hover {
            background: linear-gradient(135deg, #1D4ED8, #1E40AF);
            border-color: var(--accent-secondary);
            box-shadow: 0 0 30px rgba(37, 99, 235, 0.7);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px;
        }

        .mobile-menu-toggle:focus {
            outline: 2px solid var(--accent-secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ARTICLE CONTENT */
        .article-section {
            padding: 48px 0 64px;
        }

        .article-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 28px;
            flex-wrap: wrap;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .article-meta .badge-category {
            background: rgba(37, 99, 235, 0.2);
            color: var(--accent-secondary);
            padding: 4px 14px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.8rem;
            display: inline-block;
        }

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

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

        .article-h1 {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 2.4rem;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .article-featured-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 36px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-subtle);
        }

        .article-body {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.75;
        }

        .article-body h2 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.6rem;
            color: var(--text-primary);
            margin-top: 36px;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .article-body h3 {
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 1.3rem;
            color: var(--text-primary);
            margin-top: 28px;
            margin-bottom: 12px;
        }

        .article-body p {
            margin-bottom: 18px;
        }

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

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

        .article-body strong {
            color: var(--text-primary);
            font-weight: 600;
        }

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

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

        .article-body blockquote {
            border-left: 3px solid var(--accent-primary);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(37, 99, 235, 0.05);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            border: 1px solid var(--border-subtle);
        }

        .cta-banner {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(56, 189, 248, 0.08));
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            margin: 40px 0;
            text-align: left;
            box-shadow: var(--shadow-card);
        }

        .cta-banner h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

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

        .btn-cta-glow {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: 1px solid rgba(56, 189, 248, 0.5);
            color: #FFFFFF;
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
            transition: var(--transition-base);
            display: inline-block;
            text-decoration: none;
        }

        .btn-cta-glow:hover {
            background: linear-gradient(135deg, #1D4ED8, #1E40AF);
            border-color: var(--accent-secondary);
            box-shadow: 0 0 30px rgba(37, 99, 235, 0.7);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        .not-found-state {
            text-align: center;
            padding: 80px 20px;
        }

        .not-found-state i {
            font-size: 4rem;
            color: var(--accent-secondary);
            opacity: 0.5;
            margin-bottom: 16px;
            display: block;
        }

        .not-found-state p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            margin-bottom: 24px;
        }

        .btn-back-home {
            background: transparent;
            border: 1px solid var(--accent-primary);
            color: var(--accent-secondary);
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition-base);
            text-decoration: none;
            display: inline-block;
        }

        .btn-back-home:hover {
            background: rgba(37, 99, 235, 0.15);
            color: var(--text-primary);
            border-color: var(--accent-secondary);
        }

        /* FOOTER */
        .footer-custom {
            background: var(--bg-surface);
            border-top: 1px solid var(--border-subtle);
            padding: 40px 0 20px;
            margin-top: 48px;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 24px;
        }

        .footer-custom strong {
            color: var(--text-primary);
            display: block;
            margin-bottom: 6px;
            font-weight: 700;
        }

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

        .footer-custom ul li {
            margin-bottom: 6px;
        }

        .footer-custom ul li a {
            color: var(--text-secondary);
            transition: var(--transition-base);
            text-decoration: none;
        }

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

        .footer-copyright {
            border-top: 1px solid var(--border-subtle);
            padding-top: 16px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.8rem;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 1000;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(7, 7, 13, 0.8);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #38BDF8;
            font-size: 1.4rem;
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            transition: all 0.25s ease;
            cursor: pointer;
            opacity: 0.75;
            animation: fabPulse 3s infinite;
        }

        .fab-left::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, #A3E635, #06B6D4);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            z-index: -1;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(6, 182, 212, 0.7);
        }

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

        @keyframes fabPulse {
            0%, 100% { box-shadow: 0 0 20px rgba(6, 182, 212, 0.45); }
            50% { box-shadow: 0 0 35px rgba(6, 182, 212, 0.7); }
        }

        /* RESPONSIVE */
        @media (max-width: 1024px) {
            .container-custom {
                padding: 0 20px;
            }
            .article-h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
            .nav-links {
                display: none;
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(3, 7, 18, 0.98);
                backdrop-filter: blur(25px);
                flex-direction: column;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid var(--border-subtle);
                z-index: 1051;
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .article-h1 {
                font-size: 1.7rem;
            }
            .article-body {
                font-size: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-banner {
                padding: 24px 20px;
            }
            .fab-left {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .article-h1 {
                font-size: 1.4rem;
            }
            .navbar-brand-custom {
                font-size: 1rem;
            }
            .btn-login, .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #030712;
            --bg-surface: #081229;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-accent: #60A5FA;
            --border-subtle: rgba(37, 99, 235, 0.15);
            --border-glow: rgba(37, 99, 235, 0.4);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6), 0 1px 0 rgba(37, 99, 235, 0.2) inset;
            --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.35);
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --font-heading: 'Segoe UI', 'Inter', -apple-system, system-ui, sans-serif;
            --font-body: 'Segoe UI', 'Inter', -apple-system, system-ui, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            background-color: var(--bg-deep);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding-top: 80px;
        }

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

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

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

        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* NAVIGATION */
        .navbar-custom {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1050;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 12px 0;
        }

        .navbar-custom .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .navbar-brand-custom {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
            letter-spacing: -0.01em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            transition: var(--transition-base);
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-secondary);
            transition: width 0.3s ease;
        }

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

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-primary);
            color: var(--accent-secondary);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-base);
        }

        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            color: var(--text-primary);
            border-color: var(--accent-secondary);
        }

        .btn-signup {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: 1px solid rgba(56, 189, 248, 0.5);
            color: #FFFFFF;
            padding: 9px 22px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .btn-signup::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
            transition: left 0.5s ease;
        }

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

        .btn-signup:hover {
            background: linear-gradient(135deg, #1D4ED8, #1E40AF);
            border-color: var(--accent-secondary);
            box-shadow: 0 0 30px rgba(37, 99, 235, 0.7);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* Hero Section */
        .hero-section {
            padding: 60px 0 50px;
            background: linear-gradient(180deg, rgba(37, 99, 235, 0.08) 0%, transparent 100%);
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-text h1 {
            font-family: var(--font-heading);
            font-weight: 900;
            font-size: 2.6rem;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }

        .hero-text h1 span {
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-text .lead {
            color: var(--text-secondary);
            font-size: 1.1rem;
            line-height: 1.65;
            margin-bottom: 28px;
        }

        .hero-visual {
            background: var(--bg-surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .code-block {
            background: #0A0F1E;
            border-radius: var(--radius-sm);
            padding: 16px 20px;
            font-family: 'SF Mono', 'Fira Code', monospace;
            font-size: 0.88rem;
            color: #10B981;
            line-height: 1.7;
            overflow-x: auto;
            border-left: 3px solid var(--accent-primary);
        }

        .code-block .comment {
            color: #6B7280;
        }

        .code-block .keyword {
            color: #38BDF8;
        }

        .code-block .number {
            color: #F59E0B;
        }

        /* Section Common */
        .section-custom {
            padding: 60px 0;
        }

        .section-label {
            display: inline-block;
            background: rgba(37, 99, 235, 0.2);
            color: var(--accent-secondary);
            padding: 5px 14px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
            border: 1px solid var(--border-subtle);
        }

        .section-title {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 2rem;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.6;
            margin-bottom: 36px;
            max-width: 720px;
        }

        /* Comparison Table */
        .comparison-table-wrap {
            overflow-x: auto;
            margin-top: 24px;
        }

        .table-custom {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }

        .table-custom thead th {
            background: var(--bg-surface);
            color: var(--accent-secondary);
            padding: 16px 20px;
            font-weight: 700;
            text-align: left;
            border-bottom: 2px solid var(--border-glow);
        }

        .table-custom tbody td {
            padding: 14px 20px;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            vertical-align: middle;
        }

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

        .table-custom tbody tr:hover {
            background: rgba(37, 99, 235, 0.05);
        }

        .badge-online {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            color: #fff;
            padding: 3px 12px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 700;
            display: inline-block;
            box-shadow: 0 0 12px rgba(37, 99, 235, 0.5);
        }

        .badge-offline {
            background: rgba(148, 163, 184, 0.2);
            color: var(--text-secondary);
            padding: 3px 12px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 700;
            display: inline-block;
        }

        /* Feature Cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 20px;
        }

        .card-feature {
            background: var(--bg-surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
            height: 100%;
        }

        .card-feature::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }

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

        .card-feature:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .card-feature .icon-circle {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: rgba(37, 99, 235, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-secondary);
            margin-bottom: 16px;
        }

        .card-feature h3 {
            font-weight: 700;
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .card-feature p {
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.55;
            margin: 0;
        }

        /* Process / Steps */
        .steps-list {
            list-style: none;
            padding: 0;
            counter-reset: step-counter;
            margin-top: 24px;
        }

        .steps-list li {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-subtle);
            counter-increment: step-counter;
        }

        .steps-list li:first-child {
            padding-top: 0;
        }

        .steps-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.05rem;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

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

        .step-content p {
            color: var(--text-secondary);
            margin: 0;
            font-size: 0.95rem;
        }

        /* Image Panel */
        .image-panel {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            position: relative;
        }

        .image-panel img {
            width: 100%;
            object-fit: cover;
        }

        /* FAQ */
        .faq-section {
            background: var(--bg-surface);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 60px 0;
        }

        .accordion-custom .accordion-item {
            background: transparent;
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .accordion-custom .accordion-button {
            background: rgba(3, 7, 18, 0.6);
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1rem;
            padding: 18px 22px;
            box-shadow: none;
            border: none;
            transition: var(--transition-base);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(37, 99, 235, 0.1);
            color: var(--accent-secondary);
            box-shadow: none;
        }

        .accordion-custom .accordion-button::after {
            filter: invert(0.7);
        }

        .accordion-custom .accordion-body {
            background: rgba(3, 7, 18, 0.4);
            color: var(--text-secondary);
            padding: 18px 22px;
            line-height: 1.65;
            font-size: 0.95rem;
        }

        /* Newsletter block */
        .cta-block {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(56, 189, 248, 0.06));
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            text-align: center;
        }

        .cta-block h2 {
            font-weight: 800;
            font-size: 1.8rem;
            margin-bottom: 10px;
        }

        .cta-block p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        /* CMS Article List */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 20px;
        }

        .card-article {
            background: var(--bg-surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .card-article:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .card-article img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .card-article-body {
            padding: 18px;
        }

        .card-article-body .article-category {
            font-size: 0.75rem;
            color: var(--accent-secondary);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.03em;
        }

        .card-article-body h3 {
            font-weight: 700;
            font-size: 1.05rem;
            margin: 6px 0 8px;
            line-height: 1.35;
        }

        .card-article-body h3 a {
            color: var(--text-primary);
        }

        .card-article-body h3 a:hover {
            color: var(--accent-secondary);
        }

        .card-article-body .article-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* FOOTER */
        .footer-custom {
            background: var(--bg-surface);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-grid strong {
            color: var(--text-primary);
            font-size: 1rem;
            display: block;
            margin-bottom: 6px;
        }

        .footer-grid ul {
            list-style: none;
            padding: 0;
            margin-top: 8px;
        }

        .footer-grid ul li {
            margin-bottom: 6px;
        }

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

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

        .footer-copyright {
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.82rem;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

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

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

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(3, 7, 18, 0.98);
                backdrop-filter: blur(25px);
                flex-direction: column;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid var(--border-subtle);
                z-index: 1051;
            }

            .nav-links.active {
                display: flex;
            }

            .mobile-menu-toggle {
                display: block;
            }

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

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

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

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

            .container-custom {
                padding: 0 16px;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .cta-block {
                padding: 28px 20px;
            }
        }

        @media (max-width: 520px) {
            .nav-actions .btn-login {
                padding: 6px 14px;
                font-size: 0.8rem;
            }

            .nav-actions .btn-signup {
                padding: 7px 16px;
                font-size: 0.8rem;
            }

            .navbar-brand-custom {
                font-size: 1rem;
            }

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

/* roulang page: category2 */
:root {
            --bg-deep: #030712;
            --bg-surface: #081229;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-accent: #60A5FA;
            --border-subtle: rgba(37, 99, 235, 0.15);
            --border-glow: rgba(37, 99, 235, 0.4);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6), 0 1px 0 rgba(37, 99, 235, 0.2) inset;
            --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.35);
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --font-heading: 'Segoe UI', 'Inter', -apple-system, system-ui, sans-serif;
            --font-body: 'Segoe UI', 'Inter', -apple-system, system-ui, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            background-color: var(--bg-deep);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: 74px;
        }

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

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

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

        h1, h2, h3, h4 {
            font-family: var(--font-heading);
            font-weight: 700;
        }

        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* NAVIGATION */
        .navbar-custom {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1050;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
            padding: 12px 0;
        }

        .navbar-custom .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .navbar-brand-custom {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
            letter-spacing: -0.01em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            transition: var(--transition-base);
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-secondary);
            transition: width 0.3s ease;
        }

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

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-primary);
            color: var(--accent-secondary);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-base);
        }

        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            color: var(--text-primary);
            border-color: var(--accent-secondary);
        }

        .btn-signup {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: 1px solid rgba(56, 189, 248, 0.5);
            color: #FFFFFF;
            padding: 9px 22px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .btn-signup::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
            transition: left 0.5s ease;
        }

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

        .btn-signup:hover {
            background: linear-gradient(135deg, #1D4ED8, #1E40AF);
            border-color: var(--accent-secondary);
            box-shadow: 0 0 30px rgba(37, 99, 235, 0.7);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* HERO SECTION */
        .hero-category {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #080D1F 0%, #030712 60%, #0C1527 100%);
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }

        .hero-category .container-custom {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #FFFFFF 0%, #E2E8F0 50%, #94A3B8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        .hero-visual {
            background: rgba(8, 18, 41, 0.7);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            backdrop-filter: blur(15px);
            box-shadow: var(--shadow-card);
        }

        .hero-visual img {
            border-radius: var(--radius-md);
            width: 100%;
            height: auto;
        }

        .btn-primary-glow {
            display: inline-block;
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: 1px solid rgba(56, 189, 248, 0.5);
            color: #FFFFFF;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 0 25px rgba(37, 99, 235, 0.45);
            transition: var(--transition-base);
        }

        .btn-primary-glow:hover {
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 0 40px rgba(37, 99, 235, 0.7);
        }

        /* SECTIONS */
        .section-padding {
            padding: 80px 0;
        }

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

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 48px;
            line-height: 1.7;
        }

        /* COMPARISON TABLE */
        .comparison-table-container {
            background: rgba(8, 18, 41, 0.5);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
        }

        .comparison-table th {
            background: rgba(37, 99, 235, 0.2);
            color: var(--accent-secondary);
            font-weight: 700;
            padding: 18px 20px;
            text-align: left;
            font-size: 1rem;
            border-bottom: 2px solid var(--border-glow);
        }

        .comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

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

        .comparison-table .highlight-row {
            background: rgba(37, 99, 235, 0.1);
        }

        .comparison-table .highlight-row td {
            color: var(--text-primary);
            font-weight: 600;
        }

        .badge-glow {
            display: inline-block;
            background: rgba(34, 197, 94, 0.2);
            color: #4ADE80;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 700;
            border: 1px solid rgba(34, 197, 94, 0.4);
        }

        /* FEATURE CARDS */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px;
            transition: var(--transition-base);
        }

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

        .feature-icon {
            font-size: 2rem;
            color: var(--accent-secondary);
            margin-bottom: 16px;
        }

        .feature-card h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

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

        /* SCENARIO CARDS */
        .scenario-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .scenario-item {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, rgba(8, 18, 41, 0.9) 100%);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition-base);
        }

        .scenario-item:hover {
            border-color: var(--accent-primary);
        }

        .scenario-item h4 {
            color: var(--accent-secondary);
            margin-bottom: 10px;
            font-size: 1.1rem;
        }

        .scenario-item p {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        /* LIST BLOCK */
        .content-list-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .content-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-base);
            box-shadow: var(--shadow-card);
        }

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

        .content-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .content-card-body {
            padding: 20px;
        }

        .content-card-body .card-category {
            font-size: 0.8rem;
            color: var(--accent-secondary);
            text-transform: uppercase;
            font-weight: 600;
            margin-bottom: 8px;
            display: block;
        }

        .content-card-body h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .content-card-body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .content-card-body .card-date {
            font-size: 0.8rem;
            color: var(--text-secondary);
            opacity: 0.7;
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition-base);
        }

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

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            color: var(--text-primary);
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition-base);
            font-family: var(--font-body);
        }

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

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* CTA SECTION */
        .cta-section {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.15) 0%, rgba(3, 7, 18, 0.98) 100%);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2rem;
            margin-bottom: 16px;
        }

        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 32px;
        }

        /* FOOTER */
        .footer-custom {
            background: var(--bg-surface);
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
            margin-top: 80px;
        }

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

        .footer-grid strong {
            color: var(--text-primary);
            display: block;
            font-size: 1rem;
            margin-bottom: 4px;
        }

        .footer-grid p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .footer-grid ul {
            list-style: none;
            padding: 0;
            margin-top: 8px;
        }

        .footer-grid ul li {
            margin-bottom: 8px;
        }

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

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

        .footer-copyright {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            color: var(--text-secondary);
            font-size: 0.85rem;
            text-align: center;
        }

        /* FAB */
        .fab-custom {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(8, 18, 41, 0.85);
            backdrop-filter: blur(20px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, #2563EB, #38BDF8) 1;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            font-size: 1.4rem;
            box-shadow: 0 0 25px rgba(37, 99, 235, 0.5);
            cursor: pointer;
            transition: var(--transition-base);
            animation: fabPulse 2.5s infinite;
        }

        .fab-custom:hover {
            background: rgba(37, 99, 235, 0.3);
            box-shadow: 0 0 40px rgba(56, 189, 248, 0.7);
            transform: scale(1.1);
            color: #FFFFFF;
        }

        @keyframes fabPulse {
            0%, 100% { box-shadow: 0 0 20px rgba(37, 99, 235, 0.4); }
            50% { box-shadow: 0 0 35px rgba(56, 189, 248, 0.6); }
        }

        .fab-notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            background: #EF4444;
            border-radius: 50%;
            border: 2px solid #FFFFFF;
            animation: blink 1.8s infinite;
        }

        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

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

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(3, 7, 18, 0.98);
                backdrop-filter: blur(25px);
                flex-direction: column;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid var(--border-subtle);
                z-index: 1051;
            }

            .nav-links.active {
                display: flex;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .hero-category .container-custom {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .hero-content h1 {
                font-size: 2.2rem;
            }

            .feature-grid,
            .scenario-list,
            .content-list-grid {
                grid-template-columns: 1fr;
            }

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

            .container-custom {
                padding: 0 16px;
            }

            .section-title {
                font-size: 1.8rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-deep: #030712;
            --bg-surface: #081229;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-accent: #60A5FA;
            --border-subtle: rgba(37, 99, 235, 0.15);
            --border-glow: rgba(37, 99, 235, 0.4);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6), 0 1px 0 rgba(37, 99, 235, 0.2) inset;
            --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.35);
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --font-heading: 'Segoe UI', 'Inter', -apple-system, system-ui, sans-serif;
            --font-body: 'Segoe UI', 'Inter', -apple-system, system-ui, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            background-color: var(--bg-deep);
            color: var(--text-primary);
            font-family: var(--font-body);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: 78px;
        }

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

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

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

        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* NAVIGATION */
        .navbar-custom {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1050;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
            padding: 12px 0;
        }

        .navbar-custom .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .navbar-brand-custom {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
            letter-spacing: -0.01em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            transition: var(--transition-base);
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-secondary);
            transition: width 0.3s ease;
        }

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

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-primary);
            color: var(--accent-secondary);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-base);
        }

        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            color: var(--text-primary);
            border-color: var(--accent-secondary);
        }

        .btn-signup {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: 1px solid rgba(56, 189, 248, 0.5);
            color: #FFFFFF;
            padding: 9px 22px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .btn-signup::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
            transition: left 0.5s ease;
        }

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

        .btn-signup:hover {
            background: linear-gradient(135deg, #1D4ED8, #1E40AF);
            border-color: var(--accent-secondary);
            box-shadow: 0 0 30px rgba(37, 99, 235, 0.7);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* HERO */
        .hero-custom {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(180deg, rgba(3,7,18,0.9) 0%, rgba(8,18,41,0.85) 100%), url('/assets/images/57a3891ea882c583.jpg') center/cover no-repeat;
            border-bottom: 1px solid var(--border-subtle);
            overflow: hidden;
        }

        .hero-custom::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 30% 50%, rgba(37,99,235,0.25) 0%, transparent 60%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }

        .hero-content h1 {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 2.6rem;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 20px;
        }

        .hero-content h1 span {
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .btn-hero {
            display: inline-block;
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: 1px solid rgba(56, 189, 248, 0.5);
            color: #FFFFFF;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 0 25px rgba(37, 99, 235, 0.5);
            transition: var(--transition-base);
        }

        .btn-hero:hover {
            background: linear-gradient(135deg, #1D4ED8, #1E40AF);
            border-color: var(--accent-secondary);
            box-shadow: 0 0 40px rgba(37, 99, 235, 0.8);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        /* SECTIONS */
        .section-custom {
            padding: 70px 0;
            border-bottom: 1px solid var(--border-subtle);
        }

        .section-custom:last-of-type {
            border-bottom: none;
        }

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

        .section-tag {
            display: inline-block;
            background: rgba(37, 99, 235, 0.2);
            color: var(--accent-secondary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .section-header h2 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 2rem;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 700px;
        }

        /* CARDS */
        .card-custom {
            background: var(--bg-surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: var(--transition-base);
            height: 100%;
            position: relative;
        }

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

        .card-custom .card-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(37,99,235,0.25), rgba(56,189,248,0.1));
            border-radius: var(--radius-md);
            margin-bottom: 20px;
            font-size: 1.5rem;
            color: var(--accent-secondary);
        }

        .card-custom h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

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

        /* STRATEGY CARD */
        .strategy-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px;
            display: flex;
            gap: 24px;
            align-items: flex-start;
            transition: var(--transition-base);
        }

        .strategy-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
        }

        .strategy-card .step-num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border-radius: 50%;
            font-weight: 800;
            font-size: 1.3rem;
            color: #FFF;
            box-shadow: 0 0 15px rgba(37,99,235,0.5);
        }

        .strategy-card h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

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

        /* TABLE */
        .table-custom {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            margin-top: 24px;
        }

        .table-custom th {
            background: rgba(37, 99, 235, 0.2);
            color: var(--accent-secondary);
            font-weight: 700;
            padding: 14px 16px;
            text-align: left;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            border-bottom: 2px solid var(--border-glow);
        }

        .table-custom td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-primary);
            font-size: 0.95rem;
        }

        .table-custom tr:hover td {
            background: rgba(37, 99, 235, 0.05);
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 16px;
            transition: var(--transition-base);
        }

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

        .faq-item h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .faq-item p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* NEWS LIST */
        .news-list-item {
            display: flex;
            gap: 20px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
        }

        .news-list-item:hover {
            background: rgba(37,99,235,0.03);
            padding-left: 8px;
            border-radius: 8px;
        }

        .news-list-item img {
            width: 120px;
            height: 80px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }

        .news-list-item h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .news-list-item p {
            color: var(--text-secondary);
            font-size: 0.85rem;
            margin-bottom: 0;
        }

        /* CTA */
        .cta-full {
            background: linear-gradient(135deg, rgba(37,99,235,0.1), rgba(8,18,41,0.95));
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
        }

        .cta-full h2 {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 2rem;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .cta-full p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-cta {
            display: inline-block;
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: 1px solid rgba(56, 189, 248, 0.5);
            color: #FFFFFF;
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 0 30px rgba(37, 99, 235, 0.6);
            transition: var(--transition-base);
        }

        .btn-cta:hover {
            background: linear-gradient(135deg, #1D4ED8, #1E40AF);
            border-color: var(--accent-secondary);
            box-shadow: 0 0 45px rgba(37, 99, 235, 0.9);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        /* FOOTER */
        .footer-custom {
            background: var(--bg-surface);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-grid strong {
            display: block;
            color: var(--text-primary);
            font-size: 1rem;
            margin-bottom: 12px;
        }

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

        .footer-grid ul li {
            margin-bottom: 8px;
        }

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

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

        .footer-copyright {
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.85rem;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
        }

        /* FAB */
        .fab-custom {
            position: fixed;
            left: 24px;
            bottom: 100px;
            z-index: 50;
            width: 58px;
            height: 58px;
            background: rgba(3, 7, 18, 0.8);
            backdrop-filter: blur(15px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, #06B6D4, #A3E635) 1;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #06B6D4;
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 25px rgba(6, 182, 212, 0.5);
        }

        .fab-custom:hover {
            transform: scale(1.1);
            box-shadow: 0 0 40px rgba(163, 230, 53, 0.7);
            color: #A3E635;
        }

        @media (max-width: 1024px) {
            .container-custom {
                padding: 0 20px;
            }
            .hero-custom {
                padding: 70px 0 50px;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .strategy-card {
                flex-direction: column;
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(3, 7, 18, 0.98);
                backdrop-filter: blur(25px);
                flex-direction: column;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid var(--border-subtle);
                z-index: 1051;
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .news-list-item {
                flex-direction: column;
            }
            .news-list-item img {
                width: 100%;
                height: 150px;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .hero-content h1 {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 12px;
            }
            .btn-hero, .btn-cta {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
            .cta-full {
                padding: 36px 20px;
            }
            .cta-full h2 {
                font-size: 1.5rem;
            }
        }

/* roulang page: category4 */
:root {
            --bg-deep: #030712;
            --bg-surface: #081229;
            --accent-primary: #2563EB;
            --accent-secondary: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-accent: #60A5FA;
            --border-subtle: rgba(37, 99, 235, 0.15);
            --border-glow: rgba(37, 99, 235, 0.4);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6), 0 1px 0 rgba(37, 99, 235, 0.2) inset;
            --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.35);
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --font-heading: 'Segoe UI', 'Inter', -apple-system, system-ui, sans-serif;
            --font-body: 'Segoe UI', 'Inter', -apple-system, system-ui, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --gradient-hero: linear-gradient(135deg, #030712 0%, rgba(8, 18, 41, 0.8) 50%, #030712 100%);
            --glass-bg: rgba(8, 18, 41, 0.65);
            --glass-border: rgba(56, 189, 248, 0.18);
        }

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

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

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

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

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

        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* NAVIGATION */
        .navbar-custom {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1050;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
            padding: 12px 0;
        }

        .navbar-custom .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .navbar-brand-custom {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.25rem;
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
            letter-spacing: -0.01em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            transition: var(--transition-base);
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-secondary);
            transition: width 0.3s ease;
        }

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

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-primary);
            color: var(--accent-secondary);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-base);
        }

        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            color: var(--text-primary);
            border-color: var(--accent-secondary);
        }

        .btn-signup {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: 1px solid rgba(56, 189, 248, 0.5);
            color: #FFFFFF;
            padding: 9px 22px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .btn-signup::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
            transition: left 0.5s ease;
        }

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

        .btn-signup:hover {
            background: linear-gradient(135deg, #1D4ED8, #1E40AF);
            border-color: var(--accent-secondary);
            box-shadow: 0 0 30px rgba(37, 99, 235, 0.7);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* HERO SECTION */
        .hero-section {
            position: relative;
            min-height: 65vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            margin-top: 70px;
            background: var(--gradient-hero);
        }

        .hero-bg-video {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
            opacity: 0.4;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: rgba(3, 7, 18, 0.7);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 850px;
            padding: 40px 24px;
        }

        .hero-play-btn {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: rgba(37, 99, 235, 0.35);
            backdrop-filter: blur(12px);
            border: 2px solid var(--accent-secondary);
            color: var(--text-primary);
            font-size: 2rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 40px rgba(37, 99, 235, 0.5);
            animation: pulse-play 2s infinite;
        }

        @keyframes pulse-play {
            0%, 100% { box-shadow: 0 0 20px rgba(37, 99, 235, 0.5); }
            50% { box-shadow: 0 0 45px rgba(56, 189, 248, 0.8), 0 0 80px rgba(37, 99, 235, 0.4); }
        }

        .hero-play-btn:hover {
            background: rgba(37, 99, 235, 0.6);
            border-color: #FFFFFF;
            transform: scale(1.08);
            box-shadow: 0 0 60px rgba(56, 189, 248, 0.9);
        }

        .hero-title {
            font-family: var(--font-heading);
            font-size: clamp(2.4rem, 6vw, 3.5rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #FFFFFF 20%, #38BDF8 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.65;
        }

        .btn-hero-cta {
            display: inline-block;
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: 1px solid var(--accent-secondary);
            color: #FFFFFF;
            padding: 14px 38px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: var(--shadow-glow);
            transition: var(--transition-base);
            letter-spacing: 0.02em;
        }

        .btn-hero-cta:hover {
            background: linear-gradient(135deg, #1D4ED8, #1E40AF);
            box-shadow: 0 0 40px rgba(56, 189, 248, 0.8);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        /* SECTION GENERIC */
        .section-block {
            padding: 80px 0;
            position: relative;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: clamp(2rem, 4.5vw, 2.6rem);
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
            line-height: 1.25;
        }

        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.65;
            margin-bottom: 48px;
            max-width: 750px;
        }

        /* GLASS CARD */
        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: var(--transition-base);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
            height: 100%;
        }

        .glass-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: 0 8px 36px rgba(37, 99, 235, 0.35);
            transform: translateY(-4px);
        }

        .glass-card .card-icon {
            font-size: 2.5rem;
            color: var(--accent-secondary);
            margin-bottom: 16px;
            display: block;
        }

        .glass-card h4 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

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

        /* PROCESS LIST */
        .process-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .process-list li {
            display: flex;
            gap: 20px;
            margin-bottom: 36px;
            align-items: flex-start;
        }

        .process-number {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 800;
            color: #FFFFFF;
            border: 2px solid rgba(56, 189, 248, 0.6);
            box-shadow: 0 0 18px rgba(37, 99, 235, 0.4);
        }

        .process-text h5 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }

        .process-text p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.65;
        }

        /* TIPS CARDS GRID */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 32px;
            margin-top: 20px;
        }

        .tip-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .tip-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, #2563EB, #38BDF8);
            border-radius: 0 8px 8px 0;
        }

        .tip-card:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-card);
        }

        .tip-card h4 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .tip-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.65;
        }

        /* INFO LIST SECTION */
        .news-list-section {
            background: rgba(8, 18, 41, 0.3);
            border-radius: var(--radius-lg);
            padding: 32px;
            border: 1px solid var(--border-subtle);
        }

        .news-item {
            display: flex;
            gap: 24px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-subtle);
            align-items: center;
            transition: var(--transition-base);
        }

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

        .news-item:hover {
            background: rgba(37, 99, 235, 0.05);
            border-radius: 8px;
            padding-left: 12px;
            padding-right: 12px;
        }

        .news-thumb {
            width: 90px;
            height: 70px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }

        .news-info h5 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-primary);
        }

        .news-info p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 2px;
        }

        .news-date {
            font-size: 0.78rem;
            color: var(--text-accent);
        }

        /* CTA SECTION */
        .cta-section {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(3, 7, 18, 0.95));
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 56px 32px;
            text-align: center;
            margin: 60px 0;
            box-shadow: 0 0 45px rgba(37, 99, 235, 0.3);
        }

        .cta-section h3 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            font-size: 1.05rem;
        }

        .btn-cta-primary {
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            border: none;
            padding: 14px 42px;
            border-radius: 50px;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: var(--shadow-glow);
            transition: var(--transition-base);
            display: inline-block;
        }

        .btn-cta-primary:hover {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            box-shadow: 0 0 50px rgba(56, 189, 248, 0.8);
            color: #FFFFFF;
            transform: translateY(-3px);
        }

        /* FLOATING ACTION BUTTON */
        .fab-custom {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 1040;
            width: 56px;
            height: 56px;
            background: rgba(3, 7, 18, 0.8);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-secondary);
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            transition: var(--transition-base);
            cursor: pointer;
        }

        .fab-custom::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, #A3E635, #06B6D4);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }

        .fab-custom:hover {
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(6, 182, 212, 0.7);
            color: #FFFFFF;
        }

        /* FOOTER */
        .footer-custom {
            background: rgba(3, 7, 18, 0.9);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            margin-top: 80px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 36px;
            margin-bottom: 32px;
        }

        .footer-grid strong {
            display: block;
            margin-bottom: 12px;
            font-size: 1rem;
            color: var(--text-primary);
        }

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

        .footer-grid ul li {
            margin-bottom: 8px;
        }

        .footer-grid ul li a {
            color: var(--text-secondary);
            font-size: 0.88rem;
            transition: var(--transition-base);
        }

        .footer-grid ul li a:hover {
            color: var(--accent-secondary);
            padding-left: 5px;
        }

        .footer-copyright {
            text-align: center;
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            color: var(--text-secondary);
            font-size: 0.82rem;
        }

        /* RESPONSIVE */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 16px;
            }

            .nav-links a {
                font-size: 0.85rem;
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }

            .nav-links {
                display: none;
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(3, 7, 18, 0.98);
                backdrop-filter: blur(25px);
                flex-direction: column;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid var(--border-subtle);
                z-index: 1051;
            }

            .nav-links.active {
                display: flex;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .nav-actions {
                gap: 8px;
            }

            .btn-login, .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }

            .hero-section {
                min-height: 55vh;
                margin-top: 66px;
            }

            .hero-title {
                font-size: 2rem;
            }

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

            .section-block {
                padding: 48px 0;
            }

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

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

            .news-item {
                flex-direction: column;
                align-items: flex-start;
            }

            .news-thumb {
                width: 100%;
                height: auto;
                max-width: 160px;
            }

            .fab-custom {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}