/* roulang page: index */
:root {
            --magma: #EA580C;
            --basalt: #0A0A0A;
            --charcoal: #171717;
            --ember: #FDBA74;
            --flare: #EF4444;
            --ash: #A3A3A3;
            --white: #FFFFFF;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --shadow-glow: 0 4px 24px rgba(234, 88, 12, 0.25);
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        body { background-color: var(--basalt); color: var(--white); font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif; line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color 0.2s; }
        .container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
        header { background-color: rgba(10,10,10,0.92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid rgba(234,88,12,0.18); position: sticky; top: 0; z-index: 100; }
        nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
        .nav-logo { font-weight: 800; font-size: 1.35rem; letter-spacing: -0.3px; color: #fff; display: flex; align-items: center; gap: 0.5rem; }
        .nav-logo span { color: var(--magma); }
        .nav-links { display: flex; align-items: center; gap: 2.2rem; }
        .nav-links a { font-size: 0.9rem; font-weight: 500; color: var(--ash); letter-spacing: 0.2px; padding: 0.35rem 0; border-bottom: 2px solid transparent; transition: color 0.2s, border-color 0.2s; }
        .nav-links a:hover, .nav-links a.active { color: #fff; border-bottom-color: var(--magma); }
        .nav-cta { display: flex; gap: 0.75rem; align-items: center; }
        .btn-login { background: transparent; border: 1px solid rgba(234,88,12,0.55); color: #fff; padding: 0.5rem 1.3rem; border-radius: 999px; font-size: 0.85rem; font-weight: 600; cursor: pointer; transition: all 0.2s; }
        .btn-login:hover { background: rgba(234,88,12,0.1); border-color: var(--magma); }
        .btn-signup { background: linear-gradient(135deg, var(--magma), var(--flare)); color: #fff; padding: 0.5rem 1.6rem; border-radius: 999px; font-size: 0.85rem; font-weight: 700; border: none; cursor: pointer; box-shadow: 0 4px 16px rgba(234,88,12,0.35); transition: all 0.2s; }
        .btn-signup:hover { box-shadow: 0 6px 22px rgba(234,88,12,0.55); transform: translateY(-1px); }
        .btn-signup:active { transform: translateY(1px); }
        .mobile-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.6rem; cursor: pointer; }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .mobile-toggle { display: block; }
            .nav-cta { gap: 0.5rem; }
            .btn-login, .btn-signup { padding: 0.4rem 1rem; font-size: 0.8rem; }
        }
        .mobile-menu { display: none; position: fixed; top: 68px; left: 0; right: 0; background: rgba(23,23,23,0.98); backdrop-filter: blur(16px); padding: 1.5rem; flex-direction: column; gap: 1.2rem; z-index: 99; border-bottom: 1px solid rgba(234,88,12,0.25); }
        .mobile-menu.active { display: flex; }
        .mobile-menu a { font-size: 1rem; font-weight: 600; color: var(--ash); padding: 0.5rem 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
        .mobile-menu a:hover, .mobile-menu a.active { color: #fff; }
        section { padding: 4.5rem 0; }
        .section-tag { display: inline-block; font-size: 0.8rem; font-weight: 700; letter-spacing: 1.2px; color: var(--magma); text-transform: uppercase; margin-bottom: 0.5rem; }
        .section-title { font-size: 2.4rem; font-weight: 800; line-height: 1.25; margin-bottom: 1rem; color: #fff; }
        .section-desc { color: var(--ash); font-size: 1rem; max-width: 640px; line-height: 1.65; }
        .btn-primary { display: inline-flex; align-items: center; gap: 0.5rem; background: linear-gradient(135deg, var(--magma), var(--flare)); color: #fff; padding: 0.8rem 2.2rem; border-radius: 999px; font-weight: 700; font-size: 0.95rem; box-shadow: var(--shadow-glow); transition: all 0.25s; border: none; cursor: pointer; }
        .btn-primary:hover { box-shadow: 0 8px 28px rgba(234,88,12,0.5); transform: translateY(-2px); }
        .btn-primary-outline { display: inline-flex; align-items: center; gap: 0.5rem; background: transparent; border: 1px solid rgba(234,88,12,0.6); color: #fff; padding: 0.8rem 2rem; border-radius: 999px; font-weight: 600; font-size: 0.9rem; transition: all 0.25s; cursor: pointer; }
        .btn-primary-outline:hover { background: rgba(234,88,12,0.1); border-color: var(--magma); }
        .card { background: var(--charcoal); border: 1px solid rgba(255,255,255,0.06); border-radius: var(--radius-lg); padding: 1.8rem; transition: all 0.25s; }
        .card:hover { border-color: rgba(234,88,12,0.35); box-shadow: var(--shadow-glow); transform: translateY(-3px); }
        .footer { background: var(--charcoal); border-top: 1px solid rgba(234,88,12,0.2); padding: 3rem 0 1.5rem; color: var(--ash); font-size: 0.85rem; }
        .footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 2rem; margin-bottom: 2rem; }
        .footer h4 { color: #fff; font-weight: 700; margin-bottom: 1rem; font-size: 1rem; }
        .footer a { color: var(--ash); display: block; padding: 0.2rem 0; font-size: 0.85rem; }
        .footer a:hover { color: var(--magma); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 1.5rem; text-align: center; font-size: 0.8rem; }
        .progress-bar { height: 8px; background: rgba(255,255,255,0.1); border-radius: 999px; overflow: hidden; }
        .progress-fill { height: 100%; background: linear-gradient(90deg, var(--magma), var(--flare)); border-radius: 999px; width: 68%; }
        @media (max-width: 1024px) { .section-title { font-size: 1.9rem; } }
        @media (max-width: 640px) { section { padding: 3rem 0; } .section-title { font-size: 1.6rem; } }

/* roulang page: article */
:root {
            --magma: #EA580C;
            --basalt: #0A0A0A;
            --charcoal: #171717;
            --ember: #FDBA74;
            --flare: #EF4444;
            --ash: #A3A3A3;
            --white: #FFFFFF;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --shadow-glow: 0 4px 24px rgba(234, 88, 12, 0.25);
            --shadow-glow-intense: 0 8px 32px rgba(234, 88, 12, 0.45);
        }

        body {
            background-color: var(--basalt);
            color: var(--white);
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s, border-color 0.2s;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Header & Navigation */
        header {
            background-color: rgba(10, 10, 10, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(234, 88, 12, 0.18);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .nav-logo {
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.3px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .nav-logo span {
            color: var(--magma);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2.2rem;
        }
        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--ash);
            letter-spacing: 0.2px;
            padding: 0.35rem 0;
            border-bottom: 2px solid transparent;
            transition: color 0.2s, border-color 0.2s;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: #fff;
            border-bottom-color: var(--magma);
        }
        .nav-cta {
            display: flex;
            gap: 0.75rem;
            align-items: center;
        }
        .btn-login {
            background: transparent;
            border: 1px solid rgba(234, 88, 12, 0.55);
            color: #fff;
            padding: 0.5rem 1.3rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
            white-space: nowrap;
        }
        .btn-login:hover {
            background: rgba(234, 88, 12, 0.1);
            border-color: var(--magma);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--magma), var(--flare));
            color: #fff;
            padding: 0.5rem 1.6rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 700;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(234, 88, 12, 0.35);
            transition: all 0.2s;
            white-space: nowrap;
        }
        .btn-signup:hover {
            box-shadow: 0 6px 22px rgba(234, 88, 12, 0.55);
            transform: translateY(-1px);
        }
        .btn-signup:active {
            transform: translateY(1px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            background: rgba(23, 23, 23, 0.98);
            backdrop-filter: blur(16px);
            padding: 1.5rem;
            flex-direction: column;
            gap: 1.2rem;
            z-index: 99;
            border-bottom: 1px solid rgba(234, 88, 12, 0.25);
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu a {
            font-size: 1rem;
            font-weight: 600;
            color: var(--ash);
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: #fff;
        }

        /* Sections */
        section {
            padding: 4.5rem 0;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 1.2px;
            color: var(--magma);
            text-transform: uppercase;
            margin-bottom: 0.5rem;
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 1rem;
            color: #fff;
        }
        .section-desc {
            color: var(--ash);
            font-size: 1rem;
            max-width: 640px;
            line-height: 1.65;
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--magma), var(--flare));
            color: #fff;
            padding: 0.8rem 2.2rem;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: var(--shadow-glow);
            transition: all 0.25s;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 8px 28px rgba(234, 88, 12, 0.5);
            transform: translateY(-2px);
        }
        .btn-primary-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            border: 1px solid rgba(234, 88, 12, 0.6);
            color: #fff;
            padding: 0.8rem 2rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.25s;
            cursor: pointer;
        }
        .btn-primary-outline:hover {
            background: rgba(234, 88, 12, 0.1);
            border-color: var(--magma);
        }

        /* Article Specific */
        .article-hero {
            background: linear-gradient(180deg, rgba(234, 88, 12, 0.08) 0%, var(--basalt) 100%);
            padding: 3rem 0 2rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
            color: var(--ash);
            font-size: 0.85rem;
            margin-bottom: 1.5rem;
        }
        .article-meta .category-badge {
            background: rgba(234, 88, 12, 0.15);
            color: var(--magma);
            padding: 0.25rem 0.9rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.8rem;
        }
        .article-content {
            max-width: 800px;
            margin: 0 auto;
            line-height: 1.85;
            font-size: 1.05rem;
            color: #E5E7EB;
        }
        .article-content h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            color: #fff;
        }
        .article-content h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
            color: var(--ember);
        }
        .article-content p {
            margin-bottom: 1.25rem;
        }
        .article-content ul, .article-content ol {
            margin-bottom: 1.25rem;
            padding-left: 1.5rem;
        }
        .article-content li {
            margin-bottom: 0.5rem;
        }
        .article-content strong {
            color: #fff;
            font-weight: 600;
        }
        .article-content a {
            color: var(--magma);
            text-decoration: underline;
        }
        .article-content a:hover {
            color: var(--ember);
        }
        .article-content blockquote {
            border-left: 4px solid var(--magma);
            padding: 1rem 1.5rem;
            background: rgba(234, 88, 12, 0.05);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 1.5rem 0;
            font-style: italic;
            color: #D1D5DB;
        }

        /* Coupon Wall Section */
        .coupon-wall {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
        }
        .coupon-card {
            background: linear-gradient(145deg, #1F1F1F, #141414);
            border: 1px solid rgba(234, 88, 12, 0.25);
            border-radius: var(--radius-lg);
            padding: 2rem;
            position: relative;
            overflow: hidden;
            transition: all 0.3s;
            cursor: pointer;
        }
        .coupon-card:hover {
            border-color: var(--magma);
            box-shadow: var(--shadow-glow-intense);
            transform: translateY(-4px);
        }
        .coupon-card.featured {
            border-color: var(--magma);
            background: linear-gradient(145deg, #2A1500, #1A0A00);
            grid-column: 1 / -1;
            max-width: 600px;
            margin: 0 auto;
            box-shadow: var(--shadow-glow);
        }
        .coupon-card .coupon-tag {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: var(--flare);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 800;
            padding: 0.3rem 0.8rem;
            border-radius: 999px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        .coupon-value {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--magma);
            line-height: 1;
            margin-bottom: 0.5rem;
            letter-spacing: -1px;
        }
        .coupon-value small {
            font-size: 1.2rem;
            font-weight: 600;
            color: #fff;
        }
        .coupon-desc {
            color: var(--ash);
            font-size: 0.9rem;
            margin-bottom: 1.2rem;
            line-height: 1.5;
        }
        .coupon-code {
            background: rgba(255, 255, 255, 0.05);
            border: 1px dashed rgba(234, 88, 12, 0.5);
            padding: 0.6rem 1.2rem;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            gap: 0.75rem;
            font-family: monospace;
            font-weight: 700;
            font-size: 1rem;
            color: var(--ember);
            cursor: pointer;
            transition: all 0.2s;
        }
        .coupon-code:hover {
            background: rgba(234, 88, 12, 0.1);
            border-color: var(--magma);
        }
        .coupon-code i {
            color: var(--magma);
        }
        .coupon-expire {
            font-size: 0.75rem;
            color: #6B7280;
            margin-top: 0.75rem;
        }

        /* Related Posts Grid */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }
        .related-card {
            background: var(--charcoal);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.25s;
        }
        .related-card:hover {
            border-color: rgba(234, 88, 12, 0.4);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .related-card-body {
            padding: 1.2rem;
        }
        .related-card-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: #fff;
        }
        .related-card-body p {
            font-size: 0.85rem;
            color: var(--ash);
            line-height: 1.5;
        }

        /* FAQ */
        .faq-item {
            background: var(--charcoal);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            margin-bottom: 1rem;
            transition: all 0.25s;
        }
        .faq-item:hover {
            border-color: rgba(234, 88, 12, 0.3);
        }
        .faq-item summary {
            font-weight: 700;
            font-size: 1.15rem;
            cursor: pointer;
            color: #fff;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary i {
            color: var(--magma);
            transition: transform 0.3s;
            font-size: 0.9rem;
        }
        .faq-item[open] summary i {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            margin-top: 1rem;
            color: var(--ash);
            line-height: 1.7;
        }

        /* Not Found */
        .not-found {
            text-align: center;
            padding: 5rem 2rem;
        }
        .not-found h2 {
            font-size: 2.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 1rem;
        }
        .not-found p {
            color: var(--ash);
            font-size: 1.1rem;
            margin-bottom: 2rem;
        }

        /* Footer */
        .footer {
            background: var(--charcoal);
            border-top: 1px solid rgba(234, 88, 12, 0.2);
            padding: 3rem 0 1.5rem;
            color: var(--ash);
            font-size: 0.85rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer h4 {
            color: #fff;
            font-weight: 700;
            margin-bottom: 1rem;
            font-size: 1rem;
        }
        .footer a {
            color: var(--ash);
            display: block;
            padding: 0.2rem 0;
            font-size: 0.85rem;
        }
        .footer a:hover {
            color: var(--magma);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--magma), var(--flare));
            border: 2px solid rgba(234, 88, 12, 0.8);
            box-shadow: 0 6px 24px rgba(234, 88, 12, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.25s;
            opacity: 0.85;
        }
        .fab i {
            font-size: 1.4rem;
            color: #fff;
        }
        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 32px rgba(234, 88, 12, 0.6);
        }
        .fab:active {
            transform: scale(0.95);
        }
        .fab-badge {
            position: absolute;
            top: -3px;
            right: -3px;
            width: 14px;
            height: 14px;
            background: #DC2626;
            border-radius: 50%;
            border: 2px solid #fff;
            animation: pulse-badge 2s infinite;
        }
        @keyframes pulse-badge {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.2); }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .section-title { font-size: 1.9rem; }
            .article-content { max-width: 100%; padding: 0 1rem; }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .mobile-toggle { display: block; }
            .nav-cta { gap: 0.5rem; }
            .btn-login, .btn-signup { padding: 0.4rem 1rem; font-size: 0.8rem; }
            section { padding: 3rem 0; }
            .section-title { font-size: 1.6rem; }
            .coupon-wall { grid-template-columns: 1fr; }
            .coupon-card.featured { max-width: 100%; grid-column: auto; }
            .fab { left: 0.75rem; bottom: 5rem; width: 48px; height: 48px; }
        }
        @media (max-width: 520px) {
            .nav-logo { font-size: 1.1rem; }
            .article-hero { padding: 2rem 0 1.5rem; }
            .coupon-value { font-size: 2.2rem; }
        }

/* roulang page: category1 */
:root {
            --magma: #EA580C;
            --basalt: #0A0A0A;
            --charcoal: #171717;
            --ember: #FDBA74;
            --flare: #EF4444;
            --ash: #A3A3A3;
            --white: #FFFFFF;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --shadow-glow: 0 4px 24px rgba(234, 88, 12, 0.25);
        }
        body {
            background-color: var(--basalt);
            color: var(--white);
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        header {
            background-color: rgba(10, 10, 10, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(234, 88, 12, 0.18);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .nav-logo {
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.3px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .nav-logo span {
            color: var(--magma);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2.2rem;
        }
        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--ash);
            letter-spacing: 0.2px;
            padding: 0.35rem 0;
            border-bottom: 2px solid transparent;
            transition: color 0.2s, border-color 0.2s;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: #fff;
            border-bottom-color: var(--magma);
        }
        .nav-cta {
            display: flex;
            gap: 0.75rem;
            align-items: center;
        }
        .btn-login {
            background: transparent;
            border: 1px solid rgba(234, 88, 12, 0.55);
            color: #fff;
            padding: 0.5rem 1.3rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
        }
        .btn-login:hover {
            background: rgba(234, 88, 12, 0.1);
            border-color: var(--magma);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--magma), var(--flare));
            color: #fff;
            padding: 0.5rem 1.6rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 700;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(234, 88, 12, 0.35);
            transition: all 0.2s;
        }
        .btn-signup:hover {
            box-shadow: 0 6px 22px rgba(234, 88, 12, 0.55);
            transform: translateY(-1px);
        }
        .btn-signup:active {
            transform: translateY(1px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            background: rgba(23, 23, 23, 0.98);
            backdrop-filter: blur(16px);
            padding: 1.5rem;
            flex-direction: column;
            gap: 1.2rem;
            z-index: 99;
            border-bottom: 1px solid rgba(234, 88, 12, 0.25);
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu a {
            font-size: 1rem;
            font-weight: 600;
            color: var(--ash);
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: #fff;
        }
        section {
            padding: 4.5rem 0;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 1.2px;
            color: var(--magma);
            text-transform: uppercase;
            margin-bottom: 0.5rem;
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 1rem;
            color: #fff;
        }
        .section-desc {
            color: var(--ash);
            font-size: 1rem;
            max-width: 640px;
            line-height: 1.65;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--magma), var(--flare));
            color: #fff;
            padding: 0.8rem 2.2rem;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: var(--shadow-glow);
            transition: all 0.25s;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 8px 28px rgba(234, 88, 12, 0.5);
            transform: translateY(-2px);
        }
        .btn-primary-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            border: 1px solid rgba(234, 88, 12, 0.6);
            color: #fff;
            padding: 0.8rem 2rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.25s;
            cursor: pointer;
        }
        .btn-primary-outline:hover {
            background: rgba(234, 88, 12, 0.1);
            border-color: var(--magma);
        }
        .card {
            background: var(--charcoal);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            transition: all 0.25s;
        }
        .card:hover {
            border-color: rgba(234, 88, 12, 0.35);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .footer {
            background: var(--charcoal);
            border-top: 1px solid rgba(234, 88, 12, 0.2);
            padding: 3rem 0 1.5rem;
            color: var(--ash);
            font-size: 0.85rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer h4 {
            color: #fff;
            font-weight: 700;
            margin-bottom: 1rem;
            font-size: 1rem;
        }
        .footer a {
            color: var(--ash);
            display: block;
            padding: 0.2rem 0;
            font-size: 0.85rem;
        }
        .footer a:hover {
            color: var(--magma);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
        }
        .odd-card {
            background: var(--charcoal);
            border-left: 3px solid var(--magma);
            padding: 1.2rem;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            transition: all 0.25s;
        }
        .odd-card:hover {
            background: #1c1c1c;
            border-left-color: var(--ember);
        }
        .data-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(234, 88, 12, 0.12);
            color: var(--ember);
            padding: 0.3rem 0.9rem;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .news-item {
            display: grid;
            grid-template-columns: 90px 1fr;
            gap: 1rem;
            padding: 1rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .news-item:last-child {
            border-bottom: 0;
        }
        .news-item img {
            width: 90px;
            height: 60px;
            object-fit: cover;
            border-radius: 6px;
        }
        @media (max-width: 1024px) {
            .section-title {
                font-size: 1.9rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-cta {
                gap: 0.5rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 640px) {
            section {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }

/* roulang page: category2 */
:root {
            --magma: #EA580C;
            --basalt: #0A0A0A;
            --charcoal: #171717;
            --ember: #FDBA74;
            --flare: #EF4444;
            --ash: #A3A3A3;
            --white: #FFFFFF;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --shadow-glow: 0 4px 24px rgba(234, 88, 12, 0.25);
        }
        body {
            background-color: var(--basalt);
            color: var(--white);
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
            margin:0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        header {
            background-color: rgba(10, 10, 10, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(234, 88, 12, 0.18);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .nav-logo {
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.3px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .nav-logo span {
            color: var(--magma);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2.2rem;
        }
        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--ash);
            letter-spacing: 0.2px;
            padding: 0.35rem 0;
            border-bottom: 2px solid transparent;
            transition: color 0.2s, border-color 0.2s;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: #fff;
            border-bottom-color: var(--magma);
        }
        .nav-cta {
            display: flex;
            gap: 0.75rem;
            align-items: center;
        }
        .btn-login {
            background: transparent;
            border: 1px solid rgba(234, 88, 12, 0.55);
            color: #fff;
            padding: 0.5rem 1.3rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
        }
        .btn-login:hover {
            background: rgba(234, 88, 12, 0.1);
            border-color: var(--magma);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--magma), var(--flare));
            color: #fff;
            padding: 0.5rem 1.6rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 700;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(234, 88, 12, 0.35);
            transition: all 0.2s;
        }
        .btn-signup:hover {
            box-shadow: 0 6px 22px rgba(234, 88, 12, 0.55);
            transform: translateY(-1px);
        }
        .btn-signup:active {
            transform: translateY(1px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            background: rgba(23, 23, 23, 0.98);
            backdrop-filter: blur(16px);
            padding: 1.5rem;
            flex-direction: column;
            gap: 1.2rem;
            z-index: 99;
            border-bottom: 1px solid rgba(234, 88, 12, 0.25);
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu a {
            font-size: 1rem;
            font-weight: 600;
            color: var(--ash);
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: #fff;
        }
        section {
            padding: 4.5rem 0;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 1.2px;
            color: var(--magma);
            text-transform: uppercase;
            margin-bottom: 0.5rem;
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 1rem;
            color: #fff;
        }
        .section-desc {
            color: var(--ash);
            font-size: 1rem;
            max-width: 640px;
            line-height: 1.65;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--magma), var(--flare));
            color: #fff;
            padding: 0.8rem 2.2rem;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: var(--shadow-glow);
            transition: all 0.25s;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 8px 28px rgba(234, 88, 12, 0.5);
            transform: translateY(-2px);
        }
        .btn-primary-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            border: 1px solid rgba(234, 88, 12, 0.6);
            color: #fff;
            padding: 0.8rem 2rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.25s;
            cursor: pointer;
        }
        .btn-primary-outline:hover {
            background: rgba(234, 88, 12, 0.1);
            border-color: var(--magma);
        }
        .card {
            background: var(--charcoal);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            transition: all 0.25s;
        }
        .card:hover {
            border-color: rgba(234, 88, 12, 0.35);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .footer {
            background: var(--charcoal);
            border-top: 1px solid rgba(234, 88, 12, 0.2);
            padding: 3rem 0 1.5rem;
            color: var(--ash);
            font-size: 0.85rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer h4 {
            color: #fff;
            font-weight: 700;
            margin-bottom: 1rem;
            font-size: 1rem;
        }
        .footer a {
            color: var(--ash);
            display: block;
            padding: 0.2rem 0;
            font-size: 0.85rem;
        }
        .footer a:hover {
            color: var(--magma);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
        }
        .odds-card {
            background: var(--charcoal);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 1.4rem 1.2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            transition: all 0.2s;
        }
        .odds-card:hover {
            border-color: rgba(234, 88, 12, 0.5);
            box-shadow: var(--shadow-glow);
        }
        .odds-btn {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.2s;
            min-width: 62px;
            text-align: center;
        }
        .odds-btn:hover {
            background: var(--magma);
            border-color: var(--magma);
            box-shadow: 0 0 12px rgba(234, 88, 12, 0.5);
        }
        .odds-btn-alt {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--ash);
            padding: 0.5rem 1rem;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            transition: all 0.2s;
            min-width: 56px;
            text-align: center;
        }
        .odds-btn-alt:hover {
            background: rgba(234, 88, 12, 0.15);
            border-color: var(--magma);
            color: #fff;
        }
        .flash-timer {
            background: var(--flare);
            color: #fff;
            padding: 0.25rem 0.8rem;
            border-radius: 999px;
            font-weight: 800;
            font-size: 0.8rem;
            animation: pulse 1.2s infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.6;
            }
        }
        .countdown-box {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            background: rgba(0, 0, 0, 0.5);
            padding: 0.6rem 1.2rem;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.95rem;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .countdown-digit {
            background: var(--magma);
            color: #fff;
            padding: 0.2rem 0.5rem;
            border-radius: 6px;
            font-size: 1.1rem;
            font-weight: 800;
        }
        @media (max-width: 1024px) {
            .section-title {
                font-size: 1.9rem;
            }
            .nav-links {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            section {
                padding: 3rem 0;
            }
            .nav-cta {
                gap: 0.5rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            .odds-card {
                flex-wrap: wrap;
            }
        }

/* roulang page: category3 */
:root {
            --magma: #EA580C;
            --basalt: #0A0A0A;
            --charcoal: #171717;
            --ember: #FDBA74;
            --flare: #EF4444;
            --ash: #A3A3A3;
            --white: #FFFFFF;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --radius-sm: 0.5rem;
            --shadow-glow: 0 4px 24px rgba(234, 88, 12, 0.25);
        }

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

        body {
            background-color: var(--basalt);
            color: var(--white);
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        header {
            background-color: rgba(10, 10, 10, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(234, 88, 12, 0.18);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .nav-logo {
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.3px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .nav-logo span {
            color: var(--magma);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2.2rem;
        }

        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--ash);
            letter-spacing: 0.2px;
            padding: 0.35rem 0;
            border-bottom: 2px solid transparent;
            transition: color 0.2s, border-color 0.2s;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: #fff;
            border-bottom-color: var(--magma);
        }

        .nav-cta {
            display: flex;
            gap: 0.75rem;
            align-items: center;
        }

        .btn-login {
            background: transparent;
            border: 1px solid rgba(234, 88, 12, 0.55);
            color: #fff;
            padding: 0.5rem 1.3rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
        }

        .btn-login:hover {
            background: rgba(234, 88, 12, 0.1);
            border-color: var(--magma);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--magma), var(--flare));
            color: #fff;
            padding: 0.5rem 1.6rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 700;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(234, 88, 12, 0.35);
            transition: all 0.2s;
        }

        .btn-signup:hover {
            box-shadow: 0 6px 22px rgba(234, 88, 12, 0.55);
            transform: translateY(-1px);
        }

        .btn-signup:active {
            transform: translateY(1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            background: rgba(23, 23, 23, 0.98);
            backdrop-filter: blur(16px);
            padding: 1.5rem;
            flex-direction: column;
            gap: 1.2rem;
            z-index: 99;
            border-bottom: 1px solid rgba(234, 88, 12, 0.25);
        }

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

        .mobile-menu a {
            font-size: 1rem;
            font-weight: 600;
            color: var(--ash);
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: #fff;
        }

        .fab-left {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(7, 7, 13, 0.8);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(7, 7, 13, 0.8), rgba(7, 7, 13, 0.8)), linear-gradient(135deg, #06B6D4, #A3E635);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            border-radius: 999px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.6rem;
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            transition: all 0.3s;
            cursor: pointer;
            animation: fabPulse 2.4s infinite;
        }

        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 32px rgba(6, 182, 212, 0.7);
        }

        @keyframes fabPulse {
            0%,
            100% {
                opacity: 0.75;
            }
            50% {
                opacity: 1;
            }
        }

        .fab-left .fab-badge {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #EF4444;
            border-radius: 50%;
            border: 2px solid #fff;
            animation: blink 1s infinite;
        }

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

        section {
            padding: 4.5rem 0;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 1.2px;
            color: var(--magma);
            text-transform: uppercase;
            margin-bottom: 0.5rem;
        }

        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 1rem;
            color: #fff;
        }

        .section-desc {
            color: var(--ash);
            font-size: 1rem;
            max-width: 640px;
            line-height: 1.65;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--magma), var(--flare));
            color: #fff;
            padding: 0.8rem 2.2rem;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: var(--shadow-glow);
            transition: all 0.25s;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            box-shadow: 0 8px 28px rgba(234, 88, 12, 0.5);
            transform: translateY(-2px);
        }

        .btn-primary-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            border: 1px solid rgba(234, 88, 12, 0.6);
            color: #fff;
            padding: 0.8rem 2rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.25s;
            cursor: pointer;
        }

        .btn-primary-outline:hover {
            background: rgba(234, 88, 12, 0.1);
            border-color: var(--magma);
        }

        .card {
            background: var(--charcoal);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            transition: all 0.25s;
        }

        .card:hover {
            border-color: rgba(234, 88, 12, 0.35);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .footer {
            background: var(--charcoal);
            border-top: 1px solid rgba(234, 88, 12, 0.2);
            padding: 3rem 0 1.5rem;
            color: var(--ash);
            font-size: 0.85rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer h4 {
            color: #fff;
            font-weight: 700;
            margin-bottom: 1rem;
            font-size: 1rem;
        }

        .footer a {
            color: var(--ash);
            display: block;
            padding: 0.2rem 0;
            font-size: 0.85rem;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
        }

        @media (max-width: 1024px) {
            .section-title {
                font-size: 1.9rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-cta {
                gap: 0.5rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 640px) {
            section {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }

/* roulang page: category4 */
:root {
            --magma: #EA580C;
            --basalt: #0A0A0A;
            --charcoal: #171717;
            --ember: #FDBA74;
            --flare: #EF4444;
            --ash: #A3A3A3;
            --white: #FFFFFF;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --shadow-glow: 0 4px 24px rgba(234, 88, 12, 0.25);
            --shadow-volcano: 0 8px 32px rgba(234, 88, 12, 0.3);
        }

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

        body {
            background-color: var(--basalt);
            color: var(--white);
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s, border-color 0.2s;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        header {
            background-color: rgba(10, 10, 10, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(234, 88, 12, 0.18);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .nav-logo {
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.3px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .nav-logo span {
            color: var(--magma);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2.2rem;
        }

        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--ash);
            letter-spacing: 0.2px;
            padding: 0.35rem 0;
            border-bottom: 2px solid transparent;
            transition: color 0.2s, border-color 0.2s;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: #fff;
            border-bottom-color: var(--magma);
        }

        .nav-cta {
            display: flex;
            gap: 0.75rem;
            align-items: center;
        }

        .btn-login {
            background: transparent;
            border: 1px solid rgba(234, 88, 12, 0.55);
            color: #fff;
            padding: 0.5rem 1.3rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
        }

        .btn-login:hover {
            background: rgba(234, 88, 12, 0.1);
            border-color: var(--magma);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--magma), var(--flare));
            color: #fff;
            padding: 0.5rem 1.6rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 700;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(234, 88, 12, 0.35);
            transition: all 0.2s;
        }

        .btn-signup:hover {
            box-shadow: 0 6px 22px rgba(234, 88, 12, 0.55);
            transform: translateY(-1px);
        }

        .btn-signup:active {
            transform: translateY(1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            background: rgba(23, 23, 23, 0.98);
            backdrop-filter: blur(16px);
            padding: 1.5rem;
            flex-direction: column;
            gap: 1.2rem;
            z-index: 99;
            border-bottom: 1px solid rgba(234, 88, 12, 0.25);
        }

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

        .mobile-menu a {
            font-size: 1rem;
            font-weight: 600;
            color: var(--ash);
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: #fff;
        }

        section {
            padding: 4.5rem 0;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 1.2px;
            color: var(--magma);
            text-transform: uppercase;
            margin-bottom: 0.5rem;
        }

        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 1rem;
            color: #fff;
        }

        .section-desc {
            color: var(--ash);
            font-size: 1rem;
            max-width: 640px;
            line-height: 1.65;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--magma), var(--flare));
            color: #fff;
            padding: 0.8rem 2.2rem;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: var(--shadow-glow);
            transition: all 0.25s;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            box-shadow: 0 8px 28px rgba(234, 88, 12, 0.5);
            transform: translateY(-2px);
        }

        .btn-primary-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            border: 1px solid rgba(234, 88, 12, 0.6);
            color: #fff;
            padding: 0.8rem 2rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.25s;
            cursor: pointer;
        }

        .btn-primary-outline:hover {
            background: rgba(234, 88, 12, 0.1);
            border-color: var(--magma);
        }

        .card {
            background: var(--charcoal);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            transition: all 0.25s;
        }

        .card:hover {
            border-color: rgba(234, 88, 12, 0.35);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .promo-card {
            background: linear-gradient(145deg, #1a0a05, var(--charcoal));
            border: 1px solid rgba(234, 88, 12, 0.25);
            border-radius: var(--radius-lg);
            padding: 2rem;
            position: relative;
            overflow: hidden;
            transition: all 0.3s;
        }

        .promo-card:hover {
            border-color: var(--magma);
            box-shadow: var(--shadow-volcano);
            transform: translateY(-4px);
        }

        .promo-card::before {
            content: '';
            position: absolute;
            top: -30px;
            right: -30px;
            width: 100px;
            height: 100px;
            background: radial-gradient(circle, rgba(234, 88, 12, 0.2), transparent);
            border-radius: 50%;
        }

        .badge-hot {
            display: inline-block;
            background: var(--flare);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.25rem 0.7rem;
            border-radius: 999px;
            letter-spacing: 0.5px;
        }

        .badge-new {
            display: inline-block;
            background: var(--magma);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.25rem 0.7rem;
            border-radius: 999px;
            margin-left: 0.3rem;
        }

        .metric-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--magma);
            line-height: 1.1;
        }

        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 1.2rem;
            padding: 1.5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .step-number {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--magma), var(--flare));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .faq-item {
            background: var(--charcoal);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            margin-bottom: 1rem;
            cursor: pointer;
            transition: all 0.25s;
        }

        .faq-item:hover {
            border-color: rgba(234, 88, 12, 0.3);
        }

        .faq-item.active {
            border-color: var(--magma);
            box-shadow: var(--shadow-glow);
        }

        .faq-question {
            font-weight: 700;
            font-size: 1.05rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            color: var(--ash);
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            margin-top: 1rem;
        }

        .footer {
            background: var(--charcoal);
            border-top: 1px solid rgba(234, 88, 12, 0.2);
            padding: 3rem 0 1.5rem;
            color: var(--ash);
            font-size: 0.85rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer h4 {
            color: #fff;
            font-weight: 700;
            margin-bottom: 1rem;
            font-size: 1rem;
        }

        .footer a {
            color: var(--ash);
            display: block;
            padding: 0.2rem 0;
            font-size: 0.85rem;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
        }

        .fab-left {
            position: fixed;
            left: 1.2rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--magma), var(--flare));
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 22px rgba(234, 88, 12, 0.5);
            cursor: pointer;
            transition: all 0.3s;
            font-size: 1.5rem;
        }

        .fab-left:hover {
            box-shadow: 0 0 32px rgba(234, 88, 12, 0.75);
            transform: scale(1.08);
        }

        .fab-left .badge-dot {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #10B981;
            border: 2px solid var(--basalt);
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                transform: scale(1);
                opacity: 1;
            }
            50% {
                transform: scale(1.4);
                opacity: 0.6;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-cta {
                gap: 0.5rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            section {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .promo-grid {
                grid-template-columns: 1fr !important;
            }
        }