/* roulang page: index */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: rgba(18, 62, 37, 0.7);
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-primary: #FFFFFF;
            --text-secondary: #D1F2EB;
            --text-muted: #A0C8B5;
            --border-gold: #FFD700;
            --border-card: rgba(255, 215, 0, 0.3);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.25);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }
        button, input, select, textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }
        header {
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 14px 20px;
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1280px;
            margin: 0 auto;
        }
        .nav-logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .nav-logo:hover {
            opacity: 0.9;
        }
        .nav-links {
            display: none;
            gap: 28px;
            align-items: center;
            list-style: none;
        }
        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            position: relative;
            padding-bottom: 4px;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            transition: width 0.25s ease;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-gold);
        }
        .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: none;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 0.92rem;
            cursor: pointer;
            transition: var(--transition-base);
            padding: 8px 12px;
            border-radius: 8px;
        }
        .btn-login:hover {
            color: var(--accent-gold);
        }
        .btn-signup {
            background: var(--accent-red);
            color: white;
            font-weight: 600;
            font-size: 0.92rem;
            padding: 10px 22px;
            border-radius: 24px;
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 4px 14px rgba(211, 47, 47, 0.45);
        }
        .btn-signup:hover {
            background: #B71C1C;
            box-shadow: 0 6px 20px rgba(211, 47, 47, 0.6);
            transform: translateY(-1px);
        }
        .mobile-menu-toggle {
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            display: block;
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background: rgba(10, 46, 28, 0.98);
            padding: 20px;
            border-top: 1px solid rgba(255, 215, 0, 0.2);
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu a {
            padding: 12px 0;
            font-weight: 500;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-secondary);
        }
        .mobile-menu a:hover {
            color: var(--accent-gold);
        }
        @media (min-width: 768px) {
            .nav-links {
                display: flex;
            }
            .mobile-menu-toggle {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }
        footer {
            background: var(--bg-secondary);
            border-top: 2px solid rgba(255, 215, 0, 0.3);
            padding: 48px 20px 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 36px;
            max-width: 1280px;
            margin: 0 auto;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--accent-gold);
            margin-bottom: 12px;
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .footer-links h4 {
            color: var(--accent-gold);
            font-weight: 600;
            margin-bottom: 14px;
            font-size: 0.95rem;
        }
        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition-base);
        }
        .footer-links a:hover {
            color: var(--accent-gold);
            padding-left: 4px;
        }
        .footer-bottom {
            max-width: 1280px;
            margin: 32px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .badge-18 {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(211, 47, 47, 0.85);
            color: white;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
        }
        .btn-primary {
            display: inline-block;
            background: linear-gradient(135deg, #FFD700 0%, #F5A623 100%);
            color: #0A2E1C;
            font-weight: 700;
            padding: 14px 36px;
            border-radius: 28px;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 6px 20px rgba(255, 215, 0, 0.35);
            text-align: center;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(255, 215, 0, 0.5);
        }
        .btn-outline-gold {
            display: inline-block;
            background: transparent;
            border: 2px solid var(--accent-gold);
            color: var(--accent-gold);
            font-weight: 600;
            padding: 12px 32px;
            border-radius: 28px;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition-base);
            text-align: center;
        }
        .btn-outline-gold:hover {
            background: rgba(255, 215, 0, 0.1);
        }
        section {
            padding: 64px 0;
        }
        @media (max-width: 767px) {
            section {
                padding: 44px 0;
            }
        }
        .hero-badge {
            display: inline-block;
            background: rgba(211, 47, 47, 0.9);
            color: white;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 16px;
        }
        .card-feature {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .card-feature:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-gold);
            transform: translateY(-2px);
        }
        .card-feature::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-gold), transparent);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .card-feature:hover::before {
            opacity: 1;
        }
        .faq-item {
            border-bottom: 1px solid rgba(255, 215, 0, 0.15);
            padding: 20px 0;
            cursor: pointer;
        }
        .faq-item h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--accent-gold);
            margin-bottom: 8px;
        }
        .faq-item p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.65;
        }
        .progress-ring {
            position: relative;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: conic-gradient(var(--accent-gold) 0% 78%, rgba(255,255,255,0.1) 78% 100%);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .progress-ring-inner {
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: var(--bg-primary);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        .list-check li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .list-check li i {
            color: var(--accent-gold);
            margin-top: 4px;
        }
        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 215, 0, 0.2);
            border-radius: var(--radius-lg);
            padding: 24px;
            position: relative;
        }
        .testimonial-card::before {
            content: '\201C';
            font-size: 4rem;
            color: var(--accent-gold);
            position: absolute;
            top: 8px;
            left: 16px;
            opacity: 0.4;
            line-height: 1;
        }
        .sticky-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(10, 46, 28, 0.96);
            backdrop-filter: blur(12px);
            border-top: 2px solid var(--accent-gold);
            padding: 14px 20px;
            z-index: 90;
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 95;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: radial-gradient(circle at 30% 30%, #1A1A1A, #0A0A0A);
            border: 3px solid var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-base);
            opacity: 0.7;
            animation: floatUpDown 3s ease-in-out infinite;
        }
        @keyframes floatUpDown {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 6px 28px rgba(255, 215, 0, 0.55);
        }
        .fab-left i {
            color: var(--accent-gold);
            font-size: 1.3rem;
        }

/* roulang page: article */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: rgba(18, 62, 37, 0.6);
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-primary: #FFFFFF;
            --text-secondary: #D1F2EB;
            --text-muted: #A0C8B5;
            --border-gold: rgba(255, 215, 0, 0.4);
            --border-card: rgba(255, 215, 0, 0.25);
            --shadow-gold: 0 4px 24px rgba(255, 215, 0, 0.2);
            --shadow-card: 0 10px 36px rgba(0, 0, 0, 0.45);
            --radius-md: 14px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, system-ui, sans-serif;
            --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, system-ui, sans-serif;
            --transition-base: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
        }

        .container {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (min-width: 1200px) {
            .container {
                padding-left: 44px;
                padding-right: 44px;
            }
        }

        /* Header */
        header {
            background: rgba(10, 46, 28, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.22);
            position: sticky;
            top: 0;
            z-index: 120;
            padding: 14px 20px;
        }

        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1280px;
            margin: 0 auto;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-logo:hover {
            opacity: 0.88;
            transform: translateY(-1px);
        }

        .nav-links {
            display: none;
            gap: 32px;
            align-items: center;
            list-style: none;
        }

        .nav-links a {
            font-weight: 500;
            font-size: 0.96rem;
            color: var(--text-secondary);
            position: relative;
            padding-bottom: 6px;
            letter-spacing: 0.01em;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-gold), #FFC107);
            border-radius: 4px;
            transition: width 0.28s ease;
        }

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

        .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 rgba(255, 255, 255, 0.25);
            color: var(--text-primary);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 8px 16px;
            border-radius: 22px;
            cursor: pointer;
            transition: var(--transition-base);
            background: rgba(255, 255, 255, 0.04);
        }

        .btn-login:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
        }

        .btn-signup {
            background: var(--accent-red);
            color: white;
            font-weight: 600;
            font-size: 0.92rem;
            padding: 10px 22px;
            border-radius: 24px;
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 4px 16px rgba(211, 47, 47, 0.5);
        }

        .btn-signup:hover {
            background: #C21807;
            box-shadow: 0 8px 24px rgba(211, 47, 47, 0.65);
            transform: translateY(-2px);
        }

        .mobile-menu-toggle {
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.7rem;
            cursor: pointer;
            display: block;
            transition: var(--transition-base);
        }

        .mobile-menu-toggle:hover {
            color: var(--accent-gold);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: rgba(10, 46, 28, 0.98);
            padding: 20px;
            border-top: 1px solid rgba(255, 215, 0, 0.2);
        }

        .mobile-menu.active {
            display: flex;
        }

        .mobile-menu a {
            padding: 14px 6px;
            font-weight: 500;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-secondary);
            font-size: 1.02rem;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent-gold);
        }

        @media (min-width: 1024px) {
            .nav-links {
                display: flex;
            }
            .mobile-menu-toggle {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        /* Article Body */
        .article-hero {
            position: relative;
            background: linear-gradient(135deg, #0B341E 0%, #124B28 50%, #0A2E1C 100%);
            padding: 56px 20px 40px;
            border-bottom: 1px solid var(--border-gold);
            text-align: left;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 30% 40%, rgba(255, 215, 0, 0.08), transparent 70%);
            pointer-events: none;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 18px;
        }

        .article-meta .badge-category {
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 4px 14px;
            border-radius: 18px;
            font-weight: 600;
            font-size: 0.82rem;
        }

        .article-content {
            max-width: 820px;
            margin: 0 auto;
            padding: 44px 20px 60px;
        }

        .article-content h1 {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--accent-gold);
            line-height: 1.3;
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }

        .article-content h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-top: 40px;
            margin-bottom: 16px;
            border-left: 4px solid var(--accent-gold);
            padding-left: 16px;
        }

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

        .article-content p {
            color: var(--text-secondary);
            margin-bottom: 18px;
            line-height: 1.75;
            font-size: 1.04rem;
        }

        .article-content ul,
        .article-content ol {
            margin: 18px 0 24px 24px;
            color: var(--text-secondary);
        }

        .article-content li {
            margin-bottom: 10px;
            line-height: 1.7;
        }

        .article-content blockquote {
            background: rgba(255, 215, 0, 0.06);
            border-left: 3px solid var(--accent-gold);
            padding: 18px 22px;
            margin: 28px 0;
            border-radius: 0 12px 12px 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-content .highlight-box {
            background: rgba(255, 215, 0, 0.08);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-md);
            padding: 24px;
            margin: 28px 0;
        }

        .article-cta {
            background: linear-gradient(135deg, #1A4A2E, #0F3B20);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            margin: 44px 0 20px;
            text-align: center;
        }

        .btn-cta-primary {
            background: var(--accent-red);
            color: white;
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 38px;
            border-radius: 28px;
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 6px 22px rgba(211, 47, 47, 0.5);
            display: inline-block;
        }

        .btn-cta-primary:hover {
            background: #B71C1C;
            box-shadow: 0 10px 30px rgba(211, 47, 47, 0.7);
            transform: translateY(-2px);
        }

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

        /* Footer */
        footer {
            background: var(--bg-secondary);
            border-top: 2px solid rgba(255, 215, 0, 0.3);
            padding: 52px 20px 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            max-width: 1280px;
            margin: 0 auto;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }

        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--accent-gold);
            margin-bottom: 12px;
        }

        .footer-desc {
            color: var(--text-muted);
            font-size: 0.94rem;
            line-height: 1.7;
            max-width: 420px;
        }

        .badge-18 {
            background: var(--accent-red);
            color: white;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 2px 10px;
            border-radius: 20px;
            display: inline-block;
        }

        .footer-links h4 {
            font-weight: 600;
            color: var(--accent-gold);
            margin-bottom: 14px;
            font-size: 1rem;
        }

        .footer-links ul {
            list-style: none;
        }

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

        .footer-links a {
            color: var(--text-muted);
            transition: var(--transition-base);
            font-size: 0.94rem;
        }

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

        .footer-bottom {
            max-width: 1280px;
            margin: 36px auto 0;
            padding-top: 22px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.84rem;
            color: var(--text-muted);
        }

        /* Responsive */
        @media (max-width: 600px) {
            .article-content h1 {
                font-size: 1.8rem;
            }
            .article-content h2 {
                font-size: 1.4rem;
            }
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 90;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(145deg, #1E4A32, #0F2F1C);
            border: 2px solid var(--border-gold);
            box-shadow: 0 6px 24px rgba(255, 215, 0, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-base);
            color: var(--accent-gold);
            font-size: 1.4rem;
            animation: floatFab 3s infinite ease-in-out;
        }

        .fab-left:hover {
            transform: scale(1.12);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.5);
        }

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

/* roulang page: category1 */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: rgba(18, 62, 37, 0.7);
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-primary: #FFFFFF;
            --text-secondary: #D1F2EB;
            --text-muted: #A0C8B5;
            --border-gold: #FFD700;
            --border-card: rgba(255, 215, 0, 0.3);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.25);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            margin: 0;
            padding: 0;
        }

        * {
            box-sizing: border-box;
        }

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

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

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

        .container {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        header {
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 14px 20px;
        }

        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1280px;
            margin: 0 auto;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

        .nav-logo:hover {
            opacity: 0.9;
        }

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

        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            position: relative;
            padding-bottom: 4px;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            transition: width 0.25s ease;
        }

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

        .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: none;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 0.92rem;
            cursor: pointer;
            transition: var(--transition-base);
            padding: 8px 12px;
            border-radius: 8px;
        }

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

        .btn-signup {
            background: var(--accent-red);
            color: white;
            font-weight: 600;
            font-size: 0.92rem;
            padding: 10px 22px;
            border-radius: 24px;
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 4px 14px rgba(211, 47, 47, 0.45);
        }

        .btn-signup:hover {
            background: #B71C1C;
            box-shadow: 0 6px 20px rgba(211, 47, 47, 0.6);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            display: block;
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: rgba(10, 46, 28, 0.98);
            padding: 20px;
            border-top: 1px solid rgba(255, 215, 0, 0.2);
        }

        .mobile-menu.active {
            display: flex;
        }

        .mobile-menu a {
            padding: 12px 0;
            font-weight: 500;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-secondary);
        }

        .mobile-menu a:hover {
            color: var(--accent-gold);
        }

        @media (min-width: 1024px) {
            .nav-links {
                display: flex;
            }
            .mobile-menu-toggle {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        footer {
            background: var(--bg-secondary);
            border-top: 2px solid rgba(255, 215, 0, 0.3);
            padding: 48px 20px 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 36px;
            max-width: 1280px;
            margin: 0 auto;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }

        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--accent-gold);
            margin-bottom: 12px;
        }

        .footer-desc {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .footer-links h4 {
            font-weight: 600;
            font-size: 1.1rem;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

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

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

        .footer-links a {
            color: var(--text-muted);
            font-size: 0.95rem;
            transition: var(--transition-base);
        }

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

        .footer-bottom {
            max-width: 1280px;
            margin: 36px auto 0;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .badge-18 {
            background: var(--accent-red);
            color: white;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            display: inline-block;
        }

        /* Page Specific Styles */
        .page-hero {
            background: linear-gradient(rgba(10, 46, 28, 0.7), rgba(10, 46, 28, 0.85)), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            padding: 80px 20px 60px;
            position: relative;
            border-bottom: 2px solid rgba(255, 215, 0, 0.25);
        }

        .hero-question {
            background: rgba(10, 46, 28, 0.8);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 215, 0, 0.4);
            border-radius: var(--radius-lg);
            padding: 32px;
            max-width: 700px;
            margin: 0 auto;
            text-align: left;
        }

        .hero-question h1 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 2.2rem;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .hero-question p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            margin-bottom: 24px;
        }

        .inline-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .inline-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border-radius: 30px;
            border: 1px solid rgba(255, 215, 0, 0.3);
            background: rgba(0, 0, 0, 0.4);
            color: white;
            font-size: 1rem;
            outline: none;
            transition: 0.25s;
        }

        .inline-form input:focus {
            border-color: var(--accent-gold);
            box-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
        }

        .inline-form button {
            background: var(--accent-gold);
            color: #0A2E1C;
            font-weight: 700;
            padding: 14px 28px;
            border-radius: 30px;
            border: none;
            cursor: pointer;
            transition: 0.25s;
            white-space: nowrap;
            font-size: 1rem;
        }

        .inline-form button:hover {
            background: #FFC107;
            box-shadow: 0 6px 18px rgba(255, 215, 0, 0.4);
            transform: translateY(-2px);
        }

        .rules-section {
            padding: 60px 0;
        }

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

        @media (min-width: 768px) {
            .rules-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .rule-card {
            background: var(--bg-card);
            backdrop-filter: blur(8px);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .rule-card:hover {
            border-color: var(--accent-gold);
            box-shadow: 0 8px 28px rgba(255, 215, 0, 0.15);
            transform: translateY(-3px);
        }

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

        .rule-card h3 {
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 1.4rem;
            color: var(--text-primary);
            margin: 0;
        }

        .rule-card p {
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.65;
            margin: 0;
        }

        .tutorial-steps {
            padding: 60px 0;
            background: rgba(18, 62, 37, 0.5);
            border-top: 1px solid rgba(255, 215, 0, 0.2);
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
        }

        .step-block {
            display: flex;
            flex-direction: column;
            gap: 36px;
            padding: 0;
        }

        .step-item {
            display: flex;
            gap: 24px;
            align-items: flex-start;
        }

        .step-number {
            width: 48px;
            height: 48px;
            min-width: 48px;
            background: var(--accent-gold);
            color: #0A2E1C;
            font-weight: 800;
            font-size: 1.3rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .step-content h3 {
            font-weight: 600;
            font-size: 1.25rem;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .step-content p {
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.65;
        }

        .faq-section {
            padding: 60px 0;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 20px;
            transition: 0.25s;
        }

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

        .faq-item h3 {
            font-weight: 600;
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: var(--accent-gold);
        }

        .faq-item p {
            color: var(--text-muted);
            line-height: 1.65;
        }

        .cta-bar {
            background: linear-gradient(90deg, #D32F2F, #B71C1C);
            padding: 40px 20px;
            text-align: center;
        }

        .cta-bar h2 {
            font-weight: 700;
            font-size: 1.8rem;
            margin-bottom: 12px;
            color: white;
        }

        .cta-bar p {
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
        }

        .btn-cta {
            background: var(--accent-gold);
            color: #0A2E1C;
            font-weight: 700;
            padding: 16px 40px;
            border-radius: 40px;
            font-size: 1.15rem;
            border: none;
            cursor: pointer;
            transition: 0.25s;
            display: inline-block;
        }

        .btn-cta:hover {
            background: #FFC107;
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(255, 215, 0, 0.5);
        }

        .floating-fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: #0A2E1C;
            border: 2px solid var(--accent-gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-gold);
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.25);
            animation: pulse 2s infinite;
            transition: 0.3s;
        }

        .floating-fab:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 24px rgba(255, 215, 0, 0.45);
        }

        @keyframes pulse {
            0%,
            100% {
                opacity: 0.7;
            }
            50% {
                opacity: 1;
            }
        }

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

        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.1rem;
            margin-bottom: 40px;
            text-align: left;
            max-width: 600px;
        }

        @media (max-width: 768px) {
            .hero-question h1 {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: rgba(18, 62, 37, 0.7);
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-primary: #FFFFFF;
            --text-secondary: #D1F2EB;
            --text-muted: #A0C8B5;
            --border-gold: #FFD700;
            --border-card: rgba(255, 215, 0, 0.3);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.25);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

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

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

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

        .container {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        /* Header & Navigation */
        header {
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 14px 20px;
        }

        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1280px;
            margin: 0 auto;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

        .nav-logo:hover {
            opacity: 0.9;
        }

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

        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            position: relative;
            padding-bottom: 4px;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            transition: width 0.25s ease;
        }

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

        .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: none;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 0.92rem;
            cursor: pointer;
            transition: var(--transition-base);
            padding: 8px 12px;
            border-radius: 8px;
        }

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

        .btn-signup {
            background: var(--accent-red);
            color: white;
            font-weight: 600;
            font-size: 0.92rem;
            padding: 10px 22px;
            border-radius: 24px;
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 4px 14px rgba(211, 47, 47, 0.45);
        }

        .btn-signup:hover {
            background: #B71C1C;
            box-shadow: 0 6px 20px rgba(211, 47, 47, 0.6);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            display: block;
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: rgba(10, 46, 28, 0.98);
            padding: 20px;
            border-top: 1px solid rgba(255, 215, 0, 0.2);
        }

        .mobile-menu.active {
            display: flex;
        }

        .mobile-menu a {
            padding: 12px 0;
            font-weight: 500;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-secondary);
        }

        .mobile-menu a:hover {
            color: var(--accent-gold);
        }

        @media (min-width: 768px) {
            .nav-links {
                display: flex;
            }
            .mobile-menu-toggle {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        /* Page Banner */
        .page-banner {
            background: linear-gradient(135deg, rgba(10, 46, 28, 0.95), rgba(18, 62, 37, 0.9)), url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            padding: 80px 20px;
            text-align: left;
            position: relative;
            border-bottom: 2px solid rgba(255, 215, 0, 0.25);
        }

        .page-banner h1 {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .page-banner p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.7;
        }

        .badge-tag {
            display: inline-block;
            background: var(--accent-red);
            color: white;
            font-size: 0.8rem;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 20px;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
        }

        @media (min-width: 768px) {
            .page-banner h1 {
                font-size: 3rem;
            }
        }

        /* Main Content Sections */
        .section {
            padding: 60px 20px;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 36px;
            line-height: 1.6;
        }

        /* Tips Cards */
        .tips-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 28px;
        }

        @media (min-width: 768px) {
            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .tips-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .tip-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: var(--transition-base);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

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

        .tip-card .card-icon {
            width: 52px;
            height: 52px;
            background: rgba(255, 215, 0, 0.12);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-gold);
            margin-bottom: 18px;
        }

        .tip-card h3 {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

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

        /* Strategy Flow */
        .strategy-steps {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid transparent;
            transition: var(--transition-base);
        }

        .step-item:hover {
            border-color: var(--border-card);
        }

        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--accent-gold), #FFA000);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.3rem;
            color: #0A2E1C;
        }

        .step-content h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .step-content p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* Data Table / Highlight Box */
        .highlight-box {
            background: rgba(255, 215, 0, 0.06);
            border-left: 4px solid var(--accent-gold);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: 24px 28px;
            margin: 32px 0;
        }

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

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: var(--transition-base);
        }

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

        .faq-item h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .faq-item p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.65;
        }

        /* CTA Bar */
        .cta-bar {
            background: linear-gradient(135deg, var(--bg-secondary), #0A2E1C);
            border: 2px solid rgba(255, 215, 0, 0.3);
            border-radius: var(--radius-xl);
            padding: 40px 28px;
            text-align: left;
        }

        .cta-bar h3 {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 10px;
        }

        .cta-bar p {
            color: var(--text-secondary);
            margin-bottom: 22px;
            line-height: 1.7;
        }

        .btn-cta-large {
            display: inline-block;
            background: var(--accent-red);
            color: white;
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 36px;
            border-radius: 28px;
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 6px 22px rgba(211, 47, 47, 0.5);
            text-align: center;
        }

        .btn-cta-large:hover {
            background: #B71C1C;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(211, 47, 47, 0.65);
        }

        /* Footer */
        footer {
            background: var(--bg-secondary);
            border-top: 2px solid rgba(255, 215, 0, 0.3);
            padding: 48px 20px 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 36px;
            max-width: 1280px;
            margin: 0 auto;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }

        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--accent-gold);
            margin-bottom: 12px;
        }

        .footer-desc {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        .badge-18 {
            display: inline-block;
            background: #D32F2F;
            color: white;
            font-weight: 800;
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 6px;
            border: 1px solid #FFD700;
        }

        .footer-links h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .footer-links ul {
            list-style: none;
        }

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

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

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

        .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: 8px;
            max-width: 1280px;
            margin: 32px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
            }
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, #1A1A1A, #0A0A0A);
            border: 2px solid var(--accent-gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            cursor: pointer;
            transition: var(--transition-base);
            animation: pulse-gold 2.5s infinite;
        }

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

        @keyframes pulse-gold {
            0%, 100% { opacity: 0.7; }
            50% { opacity: 1; }
        }

        .notification-dot {
            position: absolute;
            top: 8px;
            right: 8px;
            width: 10px;
            height: 10px;
            background: #D32F2F;
            border-radius: 50%;
            border: 1.5px solid #FFD700;
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: rgba(18, 62, 37, 0.7);
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-primary: #FFFFFF;
            --text-secondary: #D1F2EB;
            --text-muted: #A0C8B5;
            --border-gold: #FFD700;
            --border-card: rgba(255, 215, 0, 0.3);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.25);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            margin: 0;
            padding: 0;
        }

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

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

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

        /* Header & Navigation */
        header {
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 14px 20px;
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1280px;
            margin: 0 auto;
        }
        .nav-logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .nav-logo:hover {
            opacity: 0.9;
        }
        .nav-links {
            display: none;
            gap: 28px;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            position: relative;
            padding-bottom: 4px;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            transition: width 0.25s ease;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-gold);
        }
        .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: none;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 0.92rem;
            cursor: pointer;
            transition: var(--transition-base);
            padding: 8px 12px;
            border-radius: 8px;
        }
        .btn-login:hover {
            color: var(--accent-gold);
        }
        .btn-signup {
            background: var(--accent-red);
            color: white;
            font-weight: 600;
            font-size: 0.92rem;
            padding: 10px 22px;
            border-radius: 24px;
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 4px 14px rgba(211, 47, 47, 0.45);
        }
        .btn-signup:hover {
            background: #B71C1C;
            box-shadow: 0 6px 20px rgba(211, 47, 47, 0.6);
            transform: translateY(-1px);
        }
        .mobile-menu-toggle {
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            display: block;
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background: rgba(10, 46, 28, 0.98);
            padding: 20px;
            border-top: 1px solid rgba(255, 215, 0, 0.2);
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu a {
            padding: 12px 0;
            font-weight: 500;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-secondary);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent-gold);
        }
        @media (min-width: 1024px) {
            .nav-links {
                display: flex;
            }
            .mobile-menu-toggle {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        /* Footer */
        footer {
            background: var(--bg-secondary);
            border-top: 2px solid rgba(255, 215, 0, 0.3);
            padding: 48px 20px 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 36px;
            max-width: 1280px;
            margin: 0 auto;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--accent-gold);
            margin-bottom: 12px;
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 8px;
        }
        .badge-18 {
            background: var(--accent-red);
            color: white;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 0.8rem;
            display: inline-block;
        }
        .footer-links h4 {
            color: var(--accent-gold);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links ul li {
            margin-bottom: 10px;
        }
        .footer-links ul li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: var(--transition-base);
        }
        .footer-links ul li a:hover {
            color: var(--accent-gold);
            padding-left: 4px;
        }
        .footer-bottom {
            max-width: 1280px;
            margin: 28px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255,215,255,0.08);
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
            }
        }

        /* FAB */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(10, 46, 28, 0.95);
            border: 2px solid var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-base);
            animation: fabPulse 2.5s ease-in-out infinite;
        }
        .fab-support:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 28px rgba(255, 215, 0, 0.5);
            opacity: 1;
        }
        .fab-support i {
            color: var(--accent-gold);
            font-size: 1.4rem;
        }
        .fab-badge {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: var(--accent-red);
            border-radius: 50%;
            animation: badgeBlink 1.5s ease-in-out infinite;
        }
        @keyframes fabPulse {
            0%, 100% { opacity: 0.7; transform: translateY(0); }
            50% { opacity: 1; transform: translateY(-4px); }
        }
        @keyframes badgeBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        @media (max-width: 768px) {
            .fab-support {
                left: 12px;
                bottom: 80px;
                width: 46px;
                height: 46px;
            }
        }