/* roulang page: index */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1E;
            --accent-primary: #FF4500;
            --accent-secondary: #FF0000;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #9CA3AF;
            --border-color: #2A2A2A;
            --border-accent: #FF4500;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.5);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.6);
            --shadow-lg: 0 8px 32px rgba(255,69,0,0.15);
            --shadow-glow: 0 0 20px rgba(255,69,0,0.25);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        header.navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            padding: 0;
            height: 64px;
            display: flex;
            align-items: center;
        }

        .navbar .container {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i {
            color: var(--accent-primary);
            font-size: 1.5rem;
        }

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

        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-primary);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--accent-primary);
            border-radius: 2px 2px 0 0;
        }

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

        .btn-login {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 16px;
            border-radius: var(--radius-md);
        }
        .btn-login:hover {
            color: var(--accent-primary);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            box-shadow: 0 2px 10px rgba(255,69,0,0.3);
        }
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255,69,0,0.45);
        }
        .btn-signup:active {
            transform: scale(0.96);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 8px;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background-color: rgba(11, 11, 11, 0.97);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            z-index: 999;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 0 24px;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: var(--radius-md);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background-color: var(--bg-card);
            color: var(--accent-primary);
        }

        footer.footer {
            background-color: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-col p,
        .footer-col a {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .footer-col a:hover {
            color: var(--accent-primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            background: rgba(11,11,11,0.85);
            backdrop-filter: blur(10px);
            border-radius: 50px;
            border: 2px solid transparent;
            background-image: linear-gradient(#0B0B0B, #0B0B0B), linear-gradient(135deg, #00F0FF, #0052FF);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 18px rgba(0,240,255,0.35);
            opacity: 0.75;
            animation: fabPulse 3s ease-in-out infinite;
            transition: var(--transition);
        }
        .fab-left:hover {
            opacity: 1;
            box-shadow: 0 0 28px rgba(0,240,255,0.6);
            transform: scale(1.08);
        }
        .fab-left i {
            color: #00F0FF;
            font-size: 1.5rem;
        }

        @keyframes fabPulse {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-4px); }
        }

        section {
            padding: 64px 0;
        }
        .hero-section {
            background: linear-gradient(135deg, #0B0B0B 0%, #1A0A02 50%, #0B0B0B 100%);
            padding-top: 100px;
            padding-bottom: 60px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: -10%;
            width: 60%;
            height: 100%;
            background: radial-gradient(circle at 70% 30%, rgba(255,69,0,0.08), transparent 70%);
            pointer-events: none;
        }

        .progress-ring {
            width: 140px;
            height: 140px;
            border-radius: 50%;
            border: 6px solid var(--border-color);
            border-top-color: var(--accent-primary);
            animation: spin 2s linear infinite;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 2rem;
            color: var(--accent-primary);
        }
        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        .tier-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: var(--transition);
        }
        .tier-card:hover {
            border-color: var(--border-accent);
            box-shadow: var(--shadow-lg);
        }
        .tier-card.featured {
            border-color: var(--accent-primary);
            box-shadow: var(--shadow-glow);
            position: relative;
        }
        .tier-card.featured::before {
            content: 'PHỔ BIẾN NHẤT';
            position: absolute;
            top: -12px;
            right: 16px;
            background: var(--accent-primary);
            color: #FFF;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 18px 0;
            cursor: pointer;
        }
        .faq-item h3 {
            font-size: 1.05rem;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-item .answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .answer {
            max-height: 300px;
            margin-top: 12px;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .nav-links {
                gap: 16px;
            }
        }
        @media (max-width: 768px) {
            .nav-links, .nav-actions .btn-login, .nav-actions .btn-signup {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-actions {
                display: flex;
            }
            .nav-actions .btn-login, .nav-actions .btn-signup {
                display: inline-flex;
            }
            .hero-section {
                padding-top: 88px;
                text-align: left;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: left;
            }
            .fab-left {
                left: 12px;
                bottom: 80px;
                width: 46px;
                height: 46px;
            }
        }
        @media (max-width: 520px) {
            .nav-actions .btn-login {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            .nav-actions .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .tier-card {
                padding: 16px;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1E;
            --accent-primary: #FF4500;
            --accent-secondary: #FF0000;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #9CA3AF;
            --border-color: #2A2A2A;
            --border-accent: #FF4500;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.5);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.6);
            --shadow-lg: 0 8px 32px rgba(255,69,0,0.15);
            --shadow-glow: 0 0 20px rgba(255,69,0,0.25);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 64px;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        
        button, .btn {
            cursor: pointer;
            border: none;
            outline: none;
            transition: var(--transition);
            font-family: inherit;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        header.navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            padding: 0;
            height: 64px;
            display: flex;
            align-items: center;
        }
        
        .navbar .container {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        
        .logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .logo i {
            color: var(--accent-primary);
            font-size: 1.5rem;
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        
        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
        }
        
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-primary);
        }
        
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--accent-primary);
            border-radius: 2px 2px 0 0;
        }
        
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .btn-login {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 16px;
            border-radius: var(--radius-md);
        }
        
        .btn-login:hover {
            color: var(--accent-primary);
        }
        
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            box-shadow: 0 2px 10px rgba(255,69,0,0.3);
        }
        
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255,69,0,0.45);
        }
        
        .btn-signup:active {
            transform: scale(0.96);
        }
        
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 8px;
            cursor: pointer;
        }
        
        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background-color: rgba(11, 11, 11, 0.97);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            z-index: 999;
        }
        
        .mobile-menu.open {
            display: block;
        }
        
        .mobile-menu ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 0 24px;
        }
        
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: var(--radius-md);
        }
        
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background-color: var(--bg-card);
            color: var(--accent-primary);
        }
        
        .article-container {
            max-width: 860px;
            margin: 0 auto;
            padding: 40px 20px;
        }
        
        .article-header {
            margin-bottom: 32px;
        }
        
        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 16px;
            color: var(--text-muted);
            font-size: 0.875rem;
        }
        
        .article-category {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            padding: 4px 12px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.8rem;
            text-transform: uppercase;
        }
        
        .article-date {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        
        .article-date i {
            font-size: 0.875rem;
        }
        
        .article-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        
        .article-featured-image {
            width: 100%;
            border-radius: var(--radius-xl);
            margin-bottom: 32px;
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }
        
        .article-featured-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        
        .article-content {
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--text-secondary);
        }
        
        .article-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 32px 0 16px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border-accent);
        }
        
        .article-content h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 24px 0 12px;
        }
        
        .article-content p {
            margin-bottom: 16px;
        }
        
        .article-content ul, 
        .article-content ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        
        .article-content li {
            margin-bottom: 8px;
        }
        
        .article-content strong {
            color: var(--accent-primary);
            font-weight: 700;
        }
        
        .article-content a {
            color: var(--accent-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        
        .article-content a:hover {
            color: #FF6B3D;
        }
        
        .article-content blockquote {
            border-left: 4px solid var(--accent-primary);
            padding: 16px 20px;
            margin: 24px 0;
            background-color: var(--bg-card);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-style: italic;
            color: var(--text-secondary);
        }
        
        .article-content .highlight-box {
            background: linear-gradient(135deg, rgba(255,69,0,0.1), rgba(255,0,0,0.1));
            border: 1px solid var(--border-accent);
            padding: 20px;
            border-radius: var(--radius-lg);
            margin: 24px 0;
        }
        
        .article-cta {
            margin-top: 40px;
            padding: 32px;
            background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-color);
            text-align: center;
        }
        
        .article-cta h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        
        .article-cta p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        
        .article-cta .btn-cta {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-lg);
            font-size: 1rem;
            box-shadow: var(--shadow-glow);
        }
        
        .article-cta .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255,69,0,0.4);
        }
        
        .not-found-section {
            text-align: center;
            padding: 80px 20px;
        }
        
        .not-found-section i {
            font-size: 4rem;
            color: var(--accent-primary);
            margin-bottom: 20px;
        }
        
        .not-found-section h2 {
            font-size: 2rem;
            margin-bottom: 16px;
        }
        
        .not-found-section p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        
        .btn-back-home {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            font-weight: 700;
            padding: 12px 28px;
            border-radius: var(--radius-lg);
        }
        
        .btn-back-home:hover {
            transform: translateY(-1px);
            box-shadow: var(--shadow-glow);
        }
        
        footer.footer {
            background-color: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
            margin-top: 60px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        
        .footer-col p,
        .footer-col a {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.8;
            display: block;
            margin-bottom: 4px;
        }
        
        .footer-col a:hover {
            color: var(--accent-primary);
        }
        
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            flex-wrap: wrap;
            gap: 12px;
        }
        
        .footer-bottom span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 26px;
            background: rgba(11, 11, 11, 0.85);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(255,69,0,0.3);
            transition: all 0.3s ease;
            animation: fabPulse 2s ease-in-out infinite;
        }
        
        .fab-left::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 28px;
            background: linear-gradient(135deg, #FF4500, #00F0FF);
            z-index: -1;
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask-composite: exclude;
            -webkit-mask-composite: xor;
            padding: 2px;
        }
        
        .fab-left i {
            font-size: 1.5rem;
            color: #FF4500;
        }
        
        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(255,69,0,0.5);
        }
        
        .fab-left:active {
            transform: scale(0.95);
        }
        
        @keyframes fabPulse {
            0%, 100% { opacity: 0.7; }
            50% { opacity: 1; }
        }
        
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            
            .article-title {
                font-size: 1.8rem;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links,
            .nav-actions .btn-login,
            .nav-actions .btn-signup {
                display: none;
            }
            
            .mobile-toggle {
                display: block;
            }
            
            .nav-actions {
                gap: 8px;
            }
            
            .article-title {
                font-size: 1.5rem;
            }
            
            .article-content {
                font-size: 1rem;
            }
            
            .article-content h2 {
                font-size: 1.3rem;
            }
            
            .article-content h3 {
                font-size: 1.1rem;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            
            .article-container {
                padding: 24px 16px;
            }
            
            .fab-left {
                width: 44px;
                height: 44px;
                border-radius: 22px;
                left: 16px;
                bottom: 80px;
            }
            
            .fab-left i {
                font-size: 1.25rem;
            }
        }
        
        @media (max-width: 520px) {
            .article-meta {
                gap: 10px;
                font-size: 0.8rem;
            }
            
            .article-title {
                font-size: 1.3rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1E;
            --accent-primary: #FF4500;
            --accent-secondary: #FF0000;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #9CA3AF;
            --border-color: #2A2A2A;
            --border-accent: #FF4500;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.5);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.6);
            --shadow-lg: 0 8px 32px rgba(255,69,0,0.15);
            --shadow-glow: 0 0 20px rgba(255,69,0,0.25);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        header.navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            padding: 0;
            height: 64px;
            display: flex;
            align-items: center;
        }

        .navbar .container {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

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

        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
        }

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

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--accent-primary);
            border-radius: 2px 2px 0 0;
        }

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

        .btn-login {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 16px;
            border-radius: var(--radius-md);
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            box-shadow: 0 2px 10px rgba(255,69,0,0.3);
        }

        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255,69,0,0.45);
        }

        .btn-signup:active {
            transform: scale(0.96);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 8px;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background-color: rgba(11, 11, 11, 0.97);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            z-index: 999;
        }

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

        .mobile-menu ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 0 24px;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: var(--radius-md);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background-color: var(--bg-card);
            color: var(--accent-primary);
        }

        footer.footer {
            background-color: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
            margin-top: 0;
        }

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

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .footer-col p,
        .footer-col a {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.8;
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .page-banner {
            position: relative;
            padding: 120px 0 80px;
            background-image: linear-gradient(rgba(11, 11, 11, 0.85), rgba(11, 11, 11, 0.95)), url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border-color);
        }

        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.3;
            background: linear-gradient(135deg, #FFFFFF, #FFA07A);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-banner .subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 700px;
            line-height: 1.7;
        }

        .section {
            padding: 80px 0;
        }

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

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 650px;
            line-height: 1.7;
            margin-bottom: 48px;
        }

        .guide-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: 32px;
            transition: var(--transition);
        }

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

        .guide-card .icon-circle {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, rgba(255,69,0,0.15), rgba(255,0,0,0.1));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--accent-primary);
            font-size: 1.5rem;
        }

        .guide-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

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

        .step-item {
            display: flex;
            gap: 24px;
            padding: 28px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            color: #FFFFFF;
        }

        .step-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .step-content p {
            color: var(--text-muted);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        .cta-block {
            background: linear-gradient(135deg, rgba(255,69,0,0.08), rgba(255,0,0,0.05));
            border: 1px solid var(--border-accent);
            border-radius: var(--radius-xl);
            padding: 48px;
            text-align: center;
        }

        .cta-block h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .cta-block p {
            color: var(--text-secondary);
            margin-bottom: 32px;
            font-size: 1.05rem;
            line-height: 1.7;
        }

        .btn-cta {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-glow);
        }

        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(255,69,0,0.4);
        }

        .btn-outline {
            display: inline-block;
            background: transparent;
            border: 2px solid var(--accent-primary);
            color: var(--accent-primary);
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            margin-left: 16px;
        }

        .btn-outline:hover {
            background-color: var(--accent-primary);
            color: #FFFFFF;
        }

        .tip-box {
            background-color: var(--bg-card);
            border-left: 4px solid var(--accent-primary);
            padding: 24px;
            border-radius: var(--radius-md);
            margin: 24px 0;
        }

        .tip-box i {
            color: var(--accent-primary);
            margin-right: 8px;
        }

        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question {
            padding: 20px 28px;
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
        }

        .faq-answer {
            padding: 0 28px 20px;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }

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

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

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
            .nav-links {
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            .nav-links, .nav-actions .btn-login, .nav-actions .btn-signup {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .page-banner {
                padding: 100px 0 60px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .step-item {
                flex-direction: column;
                gap: 16px;
            }
            .cta-block {
                padding: 32px 24px;
            }
            .btn-outline {
                margin-left: 0;
                margin-top: 12px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .guide-card {
                padding: 24px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
        }

        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
        }

        .fab-btn {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background-color: rgba(22, 22, 22, 0.92);
            backdrop-filter: blur(10px);
            border: 2px solid var(--accent-primary);
            color: var(--accent-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 0 20px rgba(255,69,0,0.4);
            transition: var(--transition);
            cursor: pointer;
        }

        .fab-btn:hover {
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(255,69,0,0.6);
            background-color: var(--accent-primary);
            color: #FFFFFF;
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1E;
            --accent-primary: #FF4500;
            --accent-secondary: #FF0000;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #9CA3AF;
            --border-color: #2A2A2A;
            --border-accent: #FF4500;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.5);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.6);
            --shadow-lg: 0 8px 32px rgba(255,69,0,0.15);
            --shadow-glow: 0 0 20px rgba(255,69,0,0.25);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        button, .btn {
            cursor: pointer;
            border: none;
            outline: none;
            transition: var(--transition);
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header.navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            padding: 0;
            height: 64px;
            display: flex;
            align-items: center;
        }
        .navbar .container {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i {
            color: var(--accent-primary);
            font-size: 1.5rem;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-primary);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--accent-primary);
            border-radius: 2px 2px 0 0;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 16px;
            border-radius: var(--radius-md);
        }
        .btn-login:hover {
            color: var(--accent-primary);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            box-shadow: 0 2px 10px rgba(255,69,0,0.3);
        }
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255,69,0,0.45);
        }
        .btn-signup:active {
            transform: scale(0.96);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 8px;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background-color: rgba(11, 11, 11, 0.97);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            z-index: 999;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 0 24px;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: var(--radius-md);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background-color: var(--bg-card);
            color: var(--accent-primary);
        }
        /* Category3 Specific Styles */
        .page-hero {
            padding: 120px 0 60px;
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
            border-bottom: 1px solid var(--border-color);
        }
        .guide-block {
            padding: 60px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .guide-block:last-of-type {
            border-bottom: none;
        }
        .guide-step {
            display: flex;
            gap: 24px;
            align-items: flex-start;
            margin-bottom: 32px;
        }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            font-weight: 800;
            font-size: 1.25rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 16px rgba(255,69,0,0.3);
        }
        .checklist-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .checklist-item i {
            color: var(--accent-primary);
            margin-top: 4px;
            font-size: 1.1rem;
        }
        .tip-box {
            background: linear-gradient(135deg, rgba(255,69,0,0.08), rgba(255,0,0,0.04));
            border-left: 4px solid var(--accent-primary);
            padding: 24px;
            border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
            margin: 32px 0;
        }
        .cta-card {
            background: linear-gradient(135deg, #1A0A00, var(--bg-card));
            border: 1px solid rgba(255,69,0,0.3);
            border-radius: var(--radius-xl);
            padding: 48px;
            text-align: center;
        }
        footer.footer {
            background-color: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-col p,
        .footer-col a {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .footer-col a:hover {
            color: var(--accent-primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        /* FAB */
        .floating-fab {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50px;
            background: linear-gradient(135deg, rgba(11,11,11,0.85), rgba(22,22,22,0.9));
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            position: relative;
            box-shadow: 0 0 20px rgba(255,69,0,0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            overflow: hidden;
        }
        .floating-fab::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50px;
            padding: 2px;
            background: linear-gradient(135deg, #00F0FF, #FF007F);
            -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;
        }
        .floating-fab i {
            font-size: 1.5rem;
            color: var(--accent-primary);
            z-index: 1;
        }
        .floating-fab::after {
            content: '';
            position: absolute;
            top: 4px;
            right: 4px;
            width: 10px;
            height: 10px;
            background-color: #FF0000;
            border-radius: 50%;
            animation: pulse-notify 2s infinite;
        }
        @keyframes pulse-notify {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        .floating-fab:hover {
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(255,69,0,0.6);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-links {
                gap: 16px;
            }
            .nav-links a {
                font-size: 0.8rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links, .nav-actions .btn-login, .nav-actions .btn-signup {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-actions {
                gap: 8px;
            }
            .page-hero {
                padding: 96px 0 40px;
            }
            .guide-step {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .cta-card {
                padding: 24px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo {
                font-size: 1rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1E;
            --accent-primary: #FF4500;
            --accent-secondary: #FF0000;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #9CA3AF;
            --border-color: #2A2A2A;
            --border-accent: #FF4500;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.5);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.6);
            --shadow-lg: 0 8px 32px rgba(255,69,0,0.15);
            --shadow-glow: 0 0 20px rgba(255,69,0,0.25);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        button, .btn {
            cursor: pointer;
            border: none;
            outline: none;
            transition: var(--transition);
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header.navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            padding: 0;
            height: 64px;
            display: flex;
            align-items: center;
        }
        .navbar .container {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i {
            color: var(--accent-primary);
            font-size: 1.5rem;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-primary);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--accent-primary);
            border-radius: 2px 2px 0 0;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 16px;
            border-radius: var(--radius-md);
        }
        .btn-login:hover {
            color: var(--accent-primary);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            box-shadow: 0 2px 10px rgba(255,69,0,0.3);
        }
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255,69,0,0.45);
        }
        .btn-signup:active {
            transform: scale(0.96);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 8px;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background-color: rgba(11, 11, 11, 0.97);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            z-index: 999;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 0 24px;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: var(--radius-md);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background-color: var(--bg-card);
            color: var(--accent-primary);
        }
        footer.footer {
            background-color: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-col p,
        .footer-col a {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .footer-col a:hover {
            color: var(--accent-primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .fab-button {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(255, 69, 0, 0.15);
            border: 2px solid var(--accent-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            box-shadow: 0 0 15px rgba(255,69,0,0.5);
            cursor: pointer;
            transition: var(--transition);
            animation: float 3s ease-in-out infinite;
        }
        .fab-button:hover {
            background: var(--accent-primary);
            color: #fff;
            transform: scale(1.15);
            box-shadow: 0 0 30px rgba(255,69,0,0.7);
        }
        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        .hero-coupon {
            position: relative;
            background: linear-gradient(135deg, #1C0A00 0%, #2D0F00 50%, #1C0A00 100%);
            border: 1px solid var(--border-accent);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            margin-top: 64px;
            overflow: hidden;
        }
        .hero-coupon::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,69,0,0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
            transition: var(--transition);
            position: relative;
        }
        .guide-card:hover {
            border-color: var(--border-accent);
            box-shadow: var(--shadow-lg);
        }
        .guide-card .step-number {
            position: absolute;
            top: -16px;
            left: 32px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            font-weight: 800;
            font-size: 1.25rem;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .tip-badge {
            display: inline-block;
            background: rgba(255,69,0,0.15);
            color: var(--accent-primary);
            font-weight: 700;
            font-size: 0.75rem;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 8px;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            cursor: pointer;
        }
        .faq-item summary {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-primary);
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--accent-primary);
            transition: var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item p {
            margin-top: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        @media (max-width: 1024px) {
            .nav-links { gap: 18px; }
            .nav-links a { font-size: 0.8rem; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .hero-coupon { padding: 36px 28px; }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .nav-actions .btn-login,
            .nav-actions .btn-signup { display: inline-flex; }
            .mobile-toggle { display: block; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .hero-coupon { padding: 28px 20px; margin-top: 64px; }
            .guide-card { padding: 24px; }
            .guide-card .step-number { left: 20px; top: -14px; }
            .fab-button { bottom: 80px; left: 12px; width: 46px; height: 46px; }
        }
        @media (max-width: 520px) {
            .hero-coupon { border-radius: var(--radius-lg); padding: 24px 16px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1E;
            --accent-primary: #FF4500;
            --accent-secondary: #FF0000;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #9CA3AF;
            --border-color: #2A2A2A;
            --border-accent: #FF4500;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.5);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.6);
            --shadow-lg: 0 8px 32px rgba(255,69,0,0.15);
            --shadow-glow: 0 0 20px rgba(255,69,0,0.25);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        
        button, .btn {
            cursor: pointer;
            border: none;
            outline: none;
            transition: var(--transition);
            font-family: inherit;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        header.navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            padding: 0;
            height: 64px;
            display: flex;
            align-items: center;
        }
        
        .navbar .container {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        
        .logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .logo i {
            color: var(--accent-primary);
            font-size: 1.5rem;
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        
        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
        }
        
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-primary);
        }
        
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--accent-primary);
            border-radius: 2px 2px 0 0;
        }
        
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .btn-login {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 16px;
            border-radius: var(--radius-md);
        }
        
        .btn-login:hover {
            color: var(--accent-primary);
        }
        
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #FFFFFF;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            box-shadow: 0 2px 10px rgba(255,69,0,0.3);
        }
        
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255,69,0,0.45);
        }
        
        .btn-signup:active {
            transform: scale(0.96);
        }
        
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 8px;
        }
        
        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background-color: rgba(11, 11, 11, 0.97);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            z-index: 999;
        }
        
        .mobile-menu.open {
            display: block;
        }
        
        .mobile-menu ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 0 24px;
        }
        
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: var(--radius-md);
        }
        
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background-color: var(--bg-card);
            color: var(--accent-primary);
        }
        
        .page-hero {
            padding: 120px 0 80px;
            background: linear-gradient(135deg, rgba(22, 22, 22, 0.95) 0%, rgba(11, 11, 11, 0.98) 100%), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            position: relative;
        }
        
        .page-hero::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-primary), transparent);
        }
        
        .hero-content {
            text-align: left;
            max-width: 800px;
        }
        
        .hero-content h1 {
            font-size: 3rem;
            font-weight: 900;
            color: var(--text-primary);
            line-height: 1.2;
            margin-bottom: 20px;
        }
        
        .hero-content p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
        }
        
        .breaking-news-ticker {
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            color: var(--text-primary);
            padding: 12px 24px;
            border-radius: var(--radius-lg);
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: var(--shadow-glow);
        }
        
        .breaking-news-ticker i {
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }
        
        .news-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
            padding: 60px 0;
        }
        
        .news-main {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        
        .news-featured {
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        
        .news-featured-img {
            height: 400px;
            position: relative;
            overflow: hidden;
        }
        
        .news-featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .news-featured-category {
            position: absolute;
            top: 20px;
            left: 20px;
            background: var(--accent-primary);
            color: #fff;
            padding: 6px 16px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.85rem;
            z-index: 2;
        }
        
        .news-featured-body {
            padding: 32px;
        }
        
        .news-featured-body h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-primary);
            line-height: 1.3;
        }
        
        .news-featured-body p {
            color: var(--text-secondary);
            margin-bottom: 20px;
            line-height: 1.7;
        }
        
        .news-meta {
            display: flex;
            gap: 20px;
            color: var(--text-muted);
            font-size: 0.85rem;
            align-items: center;
        }
        
        .news-meta i {
            color: var(--accent-primary);
        }
        
        .read-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: 0 2px 12px rgba(255,69,0,0.3);
        }
        
        .read-more-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(255,69,0,0.5);
        }
        
        .news-list-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border-color);
            display: flex;
            gap: 20px;
            transition: var(--transition);
            cursor: pointer;
        }
        
        .news-list-card:hover {
            border-color: var(--border-accent);
            box-shadow: var(--shadow-glow);
            transform: translateX(4px);
        }
        
        .news-list-card-img {
            width: 200px;
            height: 150px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
        }
        
        .news-list-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .news-list-card-content h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        
        .news-list-card-content p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 12px;
            line-height: 1.5;
        }
        
        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        
        .sidebar-section {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border-color);
        }
        
        .sidebar-section h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-accent);
        }
        
        .popular-news-item {
            display: flex;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: pointer;
        }
        
        .popular-news-item:last-child {
            border-bottom: none;
        }
        
        .popular-news-item:hover {
            color: var(--accent-primary);
        }
        
        .popular-news-item .number {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--accent-primary);
            flex-shrink: 0;
            min-width: 30px;
        }
        
        .popular-news-item .content h4 {
            font-size: 0.9rem;
            font-weight: 600;
            line-height: 1.4;
        }
        
        .match-schedule-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 0;
            border-bottom: 1px solid var(--border-color);
        }
        
        .match-schedule-item:last-child {
            border-bottom: none;
        }
        
        .match-teams {
            font-weight: 700;
            font-size: 0.9rem;
        }
        
        .match-time {
            color: var(--accent-primary);
            font-weight: 700;
            font-size: 0.85rem;
        }
        
        .highlight-section {
            padding: 60px 0;
            background: var(--bg-secondary);
        }
        
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        
        .section-subtitle {
            color: var(--text-secondary);
            margin-bottom: 40px;
            font-size: 1.05rem;
        }
        
        .highlight-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        
        .highlight-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        
        .highlight-card:hover {
            border-color: var(--border-accent);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        
        .highlight-card-img {
            height: 220px;
            overflow: hidden;
        }
        
        .highlight-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .highlight-card:hover .highlight-card-img img {
            transform: scale(1.05);
        }
        
        .highlight-card-body {
            padding: 20px;
        }
        
        .highlight-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        
        .highlight-card-body p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.5;
        }
        
        .analysis-section {
            padding: 60px 0;
        }
        
        .analysis-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        
        .analysis-image {
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        
        .analysis-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 400px;
        }
        
        .analysis-content h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 20px;
        }
        
        .analysis-points {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 24px;
        }
        
        .analysis-point {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        
        .analysis-point-icon {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border-radius: 50%;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        
        .analysis-point-text h4 {
            font-weight: 700;
            margin-bottom: 6px;
            font-size: 1rem;
        }
        
        .analysis-point-text p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.5;
        }
        
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, rgba(22, 22, 22, 0.98) 0%, rgba(11, 11, 11, 0.95) 100%), url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            text-align: center;
        }
        
        .cta-box {
            background: rgba(28, 28, 30, 0.9);
            border: 1px solid var(--border-accent);
            border-radius: var(--radius-xl);
            padding: 60px;
            max-width: 700px;
            margin: 0 auto;
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-lg);
        }
        
        .cta-box h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        
        .cta-box p {
            color: var(--text-secondary);
            margin-bottom: 32px;
            font-size: 1.05rem;
            line-height: 1.7;
        }
        
        .cta-btn {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            padding: 16px 48px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 4px 20px rgba(255,69,0,0.4);
            display: inline-flex;
            align-items: center;
            gap: 12px;
            transition: var(--transition);
        }
        
        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(255,69,0,0.6);
        }
        
        footer.footer {
            background-color: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        
        .footer-col p,
        .footer-col a {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.8;
        }
        
        .footer-col a:hover {
            color: var(--accent-primary);
        }
        
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 12px;
        }
        
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 80px;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(22, 22, 22, 0.85);
            backdrop-filter: blur(10px);
            border: 2px solid var(--accent-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 1.4rem;
            box-shadow: 0 0 20px rgba(255,69,0,0.4);
            transition: var(--transition);
            cursor: pointer;
        }
        
        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(255,69,0,0.7);
        }
        
        .notification-dot {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 10px;
            height: 10px;
            background: var(--accent-secondary);
            border-radius: 50%;
            animation: blink 1.5s infinite;
        }
        
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
            
            .highlight-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .analysis-container {
                grid-template-columns: 1fr;
            }
            
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            
            .mobile-toggle {
                display: block;
            }
            
            .hero-content h1 {
                font-size: 2rem;
            }
            
            .news-list-card {
                flex-direction: column;
            }
            
            .news-list-card-img {
                width: 100%;
                height: 200px;
            }
            
            .highlight-grid {
                grid-template-columns: 1fr;
            }
            
            .cta-box {
                padding: 32px 20px;
            }
            
            .cta-box h2 {
                font-size: 1.5rem;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            
            .nav-actions {
                gap: 8px;
            }
            
            .btn-login {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
        }
        
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.6rem;
            }
            
            .news-featured-body h2 {
                font-size: 1.3rem;
            }
            
            .section-title {
                font-size: 1.5rem;
            }
        }