/* roulang page: index */
:root {
    --bg-primary: #0A0E17;
    --bg-secondary: #111827;
    --bg-card: #1A1F2E;
    --bg-hover: #20293A;
    --accent-primary: #00D4AA;
    --accent-secondary: #00BFA5;
    --accent-glow: #00F0FF;
    --gold: #FFD700;
    --text-primary: #F5F6F8;
    --text-secondary: #B0B8C5;
    --text-muted: #6B7280;
    --border-color: #2A3344;
    --border-light: #374151;
    --danger: #FF4757;
    --success: #2ED573;
    --warning: #FFA502;
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.25);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 64px;
    --spacing-2xl: 96px;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}
body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
a {
    text-decoration: none;
    color: inherit;
}
ul, ol {
    list-style: none;
}
button {
    cursor: pointer;
    border: none;
    font-family: inherit;
}
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}
/* Header & Navigation */
.site-header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(42, 51, 68, 0.6);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    gap: var(--spacing-md);
}
.logo {
    font-size: 1.15rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-glow) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
    letter-spacing: -0.3px;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
}
.nav-link {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s ease;
    position: relative;
    padding: 4px 0;
}
.nav-link:hover, .nav-link.active {
    color: var(--accent-primary);
}
.nav-link.active::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 100%;
    height: 2px;
    background: var(--accent-primary);
    border-radius: 2px;
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}
.btn-login {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    background: transparent;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    transition: background 0.2s ease;
}
.btn-login:hover {
    background: rgba(255, 255, 255, 0.05);
}
.btn-signup {
    font-size: 0.9rem;
    font-weight: 700;
    color: #000;
    background: var(--accent-primary);
    padding: 10px 22px;
    border-radius: var(--radius-sm);
    transition: all 0.25s ease;
    box-shadow: 0 2px 12px rgba(0, 212, 170, 0.3);
}
.btn-signup:hover {
    background: #00E6BC;
    box-shadow: 0 4px 20px rgba(0, 212, 170, 0.5);
    transform: translateY(-1px);
}
.mobile-menu-toggle {
    display: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 1.6rem;
    padding: 6px;
}
/* Hero Section */
.hero {
    padding: var(--spacing-xl) 0 var(--spacing-2xl);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -120px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}
.hero-content {
    max-width: 620px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 212, 170, 0.1);
    color: var(--accent-primary);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 20px;
    margin-bottom: var(--spacing-sm);
    border: 1px solid rgba(0, 212, 170, 0.25);
}
.hero-badge .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-primary);
    animation: pulse-dot 1.8s infinite;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; box-shadow: 0 0 6px var(--accent-primary); }
    50% { opacity: 0.5; box-shadow: 0 0 12px var(--accent-primary); }
}
.hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.5px;
}
.hero h1 .highlight {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-glow) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
    max-width: 560px;
}
.hero-group-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    background: var(--bg-card);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}
.group-avatars {
    display: flex;
    align-items: center;
}
.group-avatars span {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-hover);
    border: 2px solid var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-right: -10px;
}
.group-avatars span:first-child { margin-right: 0; z-index: 3; }
.group-avatars span:nth-child(2) { z-index: 2; }
.group-avatars span:nth-child(3) { z-index: 1; }
.group-count {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}
.group-count strong {
    color: var(--accent-primary);
}
.hero-ctas {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}
.btn-group-lead {
    font-size: 1rem;
    font-weight: 700;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    background: var(--accent-primary);
    color: #000;
    box-shadow: var(--shadow-glow);
    transition: all 0.3s ease;
    text-align: center;
}
.btn-group-lead:hover {
    background: #00E6BC;
    box-shadow: 0 0 30px rgba(0, 212, 170, 0.5);
    transform: translateY(-2px);
}
.btn-group-join {
    font-size: 1rem;
    font-weight: 700;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--accent-primary);
    border: 2px solid var(--accent-primary);
    transition: all 0.3s ease;
    text-align: center;
}
.btn-group-join:hover {
    background: rgba(0, 212, 170, 0.08);
    box-shadow: 0 0 20px rgba(0, 212, 170, 0.2);
}
.hero-visual {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
}
.hero-visual img {
    width: 100%;
    height: auto;
    object-fit: cover;
    min-height: 320px;
}
.hero-stats-row {
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}
.hero-stat {
    text-align: center;
}
.hero-stat .stat-num {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-primary);
}
.hero-stat .stat-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Section Base */
.section {
    padding: var(--spacing-2xl) 0;
}
.section-header {
    margin-bottom: var(--spacing-lg);
    max-width: 720px;
}
.section-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-xs);
}
.section-title {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}
.section-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Highlight Wall */
.highlight-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}
.highlight-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
}
.highlight-card:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 8px 30px rgba(0, 212, 170, 0.12);
    transform: translateY(-3px);
}
.highlight-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.highlight-card-body {
    padding: var(--spacing-md);
}
.highlight-card-tag {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-primary);
    background: rgba(0, 212, 170, 0.1);
    padding: 4px 10px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: var(--spacing-xs);
}
.highlight-card-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 6px;
    line-height: 1.35;
}
.highlight-card-body p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}
.highlight-card-link {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.2s ease;
}
.highlight-card-link:hover { gap: 8px; }

/* Commission Section */
.commission-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}
.commission-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    align-items: center;
}
.commission-content h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.25;
}
.commission-points {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}
.commission-point {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}
.commission-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: rgba(0, 212, 170, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--accent-primary);
}
.commission-point div h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 3px;
}
.commission-point div p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.55;
}
.commission-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
}
.commission-image img {
    width: 100%;
    height: auto;
    min-height: 280px;
    object-fit: cover;
}

/* Materials Section */
.materials-scroll {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}
.material-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: left;
    transition: all 0.3s ease;
}
.material-card:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}
.material-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-primary);
}
.material-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
}
.material-card p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.55;
}

/* News Section */
.news-layout {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: var(--spacing-lg);
}
.news-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}
.news-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s ease;
}
.news-item:hover {
    background: var(--bg-hover);
    margin: 0 -12px;
    padding-left: 12px;
    padding-right: 12px;
    border-radius: var(--radius-sm);
}
.news-meta {
    flex-shrink: 0;
    min-width: 80px;
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-muted);
    padding-top: 3px;
}
.news-date {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent-primary);
    display: block;
}
.news-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    line-height: 1.35;
}
.news-content h4 a:hover {
    color: var(--accent-primary);
}
.news-excerpt {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
}
.news-sidebar-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
}
.news-sidebar-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--border-color);
}
.news-sidebar-card ul li {
    padding: 10px 0;
    border-bottom: 1px solid rgba(42, 51, 68, 0.5);
    font-size: 0.88rem;
    line-height: 1.45;
}
.news-sidebar-card ul li a:hover {
    color: var(--accent-primary);
}
.news-sidebar-card ul li:last-child { border-bottom: none; }

/* Join CTA Section */
.join-section {
    text-align: center;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl) var(--spacing-md);
    border: 1px solid var(--border-color);
}
.join-section h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}
.join-section p {
    max-width: 550px;
    margin: 0 auto var(--spacing-md);
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
}
.btn-join-now {
    font-size: 1.1rem;
    font-weight: 700;
    padding: 16px 40px;
    border-radius: var(--radius-md);
    background: var(--accent-primary);
    color: #000;
    box-shadow: var(--shadow-glow);
    transition: all 0.3s ease;
    display: inline-block;
}
.btn-join-now:hover {
    background: #00E6BC;
    box-shadow: 0 0 35px rgba(0, 212, 170, 0.55);
    transform: translateY(-2px);
}

/* Additional Sections */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    text-align: center;
    padding: var(--spacing-lg) 0;
}
.stat-block {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: all 0.3s ease;
}
.stat-block:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}
.stat-block .stat-big {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--accent-primary);
    display: block;
}
.stat-block .stat-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.data-analysis-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}
.data-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all 0.3s ease;
}
.data-card:hover {
    border-color: var(--accent-primary);
}
.data-indicator {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(0, 212, 170, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--accent-primary);
    flex-shrink: 0;
}
.data-card div h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 3px;
}
.data-card div p {
    font-size: 0.82rem;
    color: var(--text-secondary);
}
.data-trend {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--success);
}

/* Related Section */
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}
.related-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
}
.related-card:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 6px 24px rgba(0, 212, 170, 0.1);
    transform: translateY(-2px);
}
.related-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}
.related-card-body {
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
}
.related-card-body h4 {
    font-size: 0.95rem;
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 4px;
}
.related-card-body p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}



/* FAB */
.fab {
    position: fixed;
    left: 20px;
    bottom: 100px;
    z-index: 999;
}
.fab-button {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--accent-primary);
    box-shadow: 0 0 20px rgba(0, 212, 170, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--accent-primary);
    transition: all 0.3s ease;
    position: relative;
}
.fab-button:hover {
    transform: scale(1.1);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
}
.fab-dot {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 10px;
    height: 10px;
    background: #FF4757;
    border-radius: 50%;
    animation: blink-dot 1.4s infinite;
}
@keyframes blink-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* Footer */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-lg);
}
.footer-col h5 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}
.footer-col p, .footer-col li {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.7;
}
.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.footer-col ul li a:hover {
    color: var(--accent-primary);
}
.footer-bottom {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}
.footer-badges {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-sm);
}
.footer-badge {
    font-size: 0.72rem;
    padding: 4px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.2rem; }
    .highlight-grid { grid-template-columns: repeat(2, 1fr); }
    .commission-grid { grid-template-columns: 1fr; }
    .materials-scroll { grid-template-columns: repeat(2, 1fr); }
    .news-layout { grid-template-columns: 1fr; }
    .stats-bar { grid-template-columns: repeat(2, 1fr); }
    .data-analysis-grid { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .main-nav { display: none; }
    .mobile-menu-toggle { display: block; }
    .header-inner { flex-wrap: wrap; }
    .highlight-grid { grid-template-columns: 1fr; }
    .materials-scroll { grid-template-columns: 1fr; }
    .stats-bar { grid-template-columns: 1fr 1fr; }
    .related-grid, .data-analysis-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 1.8rem; }
    .section-title { font-size: 1.5rem; }
}
@media (max-width: 520px) {
    .container { padding: 0 var(--spacing-sm); }
    .hero-ctas { flex-direction: column; }
    .btn-group-lead, .btn-group-join { width: 100%; text-align: center; }
    .hero-stats-row { flex-wrap: wrap; gap: var(--spacing-sm); }
    .stats-bar { grid-template-columns: 1fr; }
    .btn-join-now { width: 100%; }
    .hero-badge { font-size: 0.75rem; }
}

/* roulang page: article */
:root {
            --bg-primary: #0A0E17;
            --bg-secondary: #111827;
            --bg-card: #1A1F2E;
            --bg-hover: #20293A;
            --accent-primary: #00D4AA;
            --accent-secondary: #00BFA5;
            --accent-glow: #00F0FF;
            --gold: #FFD700;
            --text-primary: #F5F6F8;
            --text-secondary: #B0B8C5;
            --text-muted: #6B7280;
            --border-color: #2A3344;
            --border-light: #374151;
            --danger: #FF4757;
            --success: #2ED573;
            --warning: #FFA502;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.25);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 96px;
        }

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

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

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        .site-header {
            position: sticky;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(42, 51, 68, 0.6);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: var(--spacing-md);
        }

        .logo {
            font-size: 1.15rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: color 0.2s ease;
            position: relative;
            padding: 4px 0;
        }

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 100%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .btn-login {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            transition: background 0.2s ease;
        }

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        .btn-signup {
            font-size: 0.9rem;
            font-weight: 700;
            color: #000;
            background: var(--accent-primary);
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
            box-shadow: 0 2px 12px rgba(0, 212, 170, 0.3);
        }

        .btn-signup:hover {
            background: #00E6BC;
            box-shadow: 0 4px 20px rgba(0, 212, 170, 0.5);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-primary);
            font-size: 1.6rem;
            padding: 6px;
        }

        .article-page-header {
            padding: var(--spacing-lg) 0 var(--spacing-md);
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-color);
        }

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

        .article-category-badge {
            display: inline-block;
            background: rgba(0, 212, 170, 0.1);
            color: var(--accent-primary);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 4px 12px;
            border-radius: 20px;
            border: 1px solid rgba(0, 212, 170, 0.25);
        }

        .article-date {
            color: var(--text-muted);
        }

        .article-title {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.5px;
        }

        .article-title .highlight {
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .article-content-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: var(--spacing-xl);
            padding: var(--spacing-lg) 0 var(--spacing-2xl);
            align-items: start;
        }

        .article-body {
            max-width: 780px;
        }

        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-top: var(--spacing-lg);
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
            line-height: 1.3;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-top: var(--spacing-md);
            margin-bottom: var(--spacing-xs);
            color: var(--text-secondary);
        }

        .article-body p {
            margin-bottom: var(--spacing-sm);
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: var(--spacing-sm);
            padding-left: 24px;
            color: var(--text-secondary);
        }

        .article-body li {
            margin-bottom: var(--spacing-xs);
            line-height: 1.65;
        }

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

        .article-body blockquote {
            border-left: 4px solid var(--accent-primary);
            padding-left: var(--spacing-sm);
            margin: var(--spacing-md) 0;
            color: var(--text-muted);
            font-style: italic;
            background: rgba(0, 212, 170, 0.03);
            padding: var(--spacing-sm) var(--spacing-md);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: var(--spacing-md) 0;
            box-shadow: var(--shadow-card);
        }

        .article-featured-image {
            width: 100%;
            border-radius: var(--radius-lg);
            margin-bottom: var(--spacing-lg);
            box-shadow: var(--shadow-glow);
        }

        .article-sidebar {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border-color);
        }

        .sidebar-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: var(--accent-primary);
        }

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

        .sidebar-card ul li {
            margin-bottom: var(--spacing-xs);
        }

        .sidebar-card ul li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color 0.2s ease;
            display: block;
            padding: 6px 0;
        }

        .sidebar-card ul li a:hover {
            color: var(--accent-primary);
        }

        .cta-mini-card {
            background: linear-gradient(135deg, rgba(0, 212, 170, 0.1), rgba(0, 240, 255, 0.05));
            border: 1px solid rgba(0, 212, 170, 0.3);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
        }

        .cta-mini-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: var(--spacing-sm);
        }

        .btn-cta-sidebar {
            display: block;
            width: 100%;
            padding: 12px;
            border-radius: var(--radius-sm);
            background: var(--accent-primary);
            color: #000;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all 0.25s ease;
            box-shadow: var(--shadow-glow);
        }

        .btn-cta-sidebar:hover {
            background: #00E6BC;
            box-shadow: 0 0 24px rgba(0, 212, 170, 0.5);
            transform: translateY(-1px);
        }

        .not-found-section {
            padding: var(--spacing-2xl) 0;
            text-align: center;
        }

        .not-found-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
        }

        .not-found-section p {
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
        }

        .btn-back-home {
            display: inline-block;
            padding: 14px 32px;
            background: var(--accent-primary);
            color: #000;
            font-weight: 700;
            border-radius: var(--radius-md);
            transition: all 0.25s ease;
            box-shadow: var(--shadow-glow);
        }

        .btn-back-home:hover {
            background: #00E6BC;
            box-shadow: 0 0 30px rgba(0, 212, 170, 0.5);
            transform: translateY(-2px);
        }

        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-col h5 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
        }

        .footer-col p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: var(--spacing-sm);
        }

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

        .footer-col ul li {
            margin-bottom: var(--spacing-xs);
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .footer-col ul li a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }

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

        .footer-badges {
            display: flex;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }

        .footer-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(255, 215, 0, 0.1);
            color: var(--gold);
            border: 1px solid rgba(255, 215, 0, 0.25);
        }

        .footer-bottom {
            text-align: center;
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1050;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--gold);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            transition: all 0.3s ease;
            cursor: pointer;
            font-size: 1.5rem;
            color: var(--gold);
            opacity: 0.8;
        }

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

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        @media (max-width: 1024px) {
            .article-content-wrapper {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }
            .article-title {
                font-size: 1.9rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .header-inner {
                gap: var(--spacing-sm);
            }
            .article-title {
                font-size: 1.6rem;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .nav-actions .btn-login,
            .nav-actions .btn-signup {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 520px) {
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .article-title {
                font-size: 1.4rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0A0E17;
            --bg-secondary: #111827;
            --bg-card: #1A1F2E;
            --bg-hover: #20293A;
            --accent-primary: #00D4AA;
            --accent-secondary: #00BFA5;
            --accent-glow: #00F0FF;
            --gold: #FFD700;
            --text-primary: #F5F6F8;
            --text-secondary: #B0B8C5;
            --text-muted: #6B7280;
            --border-color: #2A3344;
            --border-light: #374151;
            --danger: #FF4757;
            --success: #2ED573;
            --warning: #FFA502;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.25);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 96px;
        }

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

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

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        .site-header {
            position: sticky;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(42, 51, 68, 0.6);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: var(--spacing-md);
        }

        .logo {
            font-size: 1.15rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: color 0.2s ease;
            position: relative;
            padding: 4px 0;
        }

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 100%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .btn-login {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            transition: background 0.2s ease;
        }

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        .btn-signup {
            font-size: 0.9rem;
            font-weight: 700;
            color: #000;
            background: var(--accent-primary);
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
            box-shadow: 0 2px 12px rgba(0, 212, 170, 0.3);
        }

        .btn-signup:hover {
            background: #00E6BC;
            box-shadow: 0 4px 20px rgba(0, 212, 170, 0.5);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-primary);
            font-size: 1.6rem;
            padding: 6px;
        }

        .category-hero {
            padding: var(--spacing-xl) 0 var(--spacing-2xl);
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(0, 212, 170, 0.05) 0%, rgba(0, 240, 255, 0.03) 100%);
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -100px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 212, 170, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .category-hero-content {
            max-width: 620px;
        }

        .category-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 212, 170, 0.1);
            color: var(--accent-primary);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: var(--spacing-sm);
            border: 1px solid rgba(0, 212, 170, 0.25);
        }

        .category-hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-primary);
            animation: pulse-dot 1.8s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 6px var(--accent-primary);
            }
            50% {
                opacity: 0.4;
                box-shadow: 0 0 2px var(--accent-primary);
            }
        }

        .category-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.5px;
        }

        .category-hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .category-hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
            line-height: 1.7;
            max-width: 560px;
        }

        .category-hero-stats {
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-md);
            padding: var(--spacing-md) 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .stat-item {
            text-align: left;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-glow));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.1;
        }

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

        .category-hero-ctas {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .btn-primary-glow {
            font-size: 1rem;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            background: var(--accent-primary);
            color: #000;
            box-shadow: 0 0 25px rgba(0, 212, 170, 0.35);
            transition: all 0.3s ease;
            text-align: center;
        }

        .btn-primary-glow:hover {
            background: #00E6BC;
            box-shadow: 0 0 35px rgba(0, 212, 170, 0.55);
            transform: translateY(-2px);
        }

        .btn-outline-glow {
            font-size: 1rem;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            background: transparent;
            color: var(--accent-primary);
            border: 2px solid var(--accent-primary);
            transition: all 0.3s ease;
            text-align: center;
        }

        .btn-outline-glow:hover {
            background: rgba(0, 212, 170, 0.08);
            box-shadow: 0 0 25px rgba(0, 212, 170, 0.25);
            transform: translateY(-2px);
        }

        .category-hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .category-hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
            border: 1px solid var(--border-color);
            max-width: 480px;
            width: 100%;
            height: auto;
        }

        .section {
            padding: var(--spacing-2xl) 0;
        }

        .section-header {
            margin-bottom: var(--spacing-lg);
        }

        .section-label {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--accent-primary);
            margin-bottom: var(--spacing-xs);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 700px;
            line-height: 1.7;
        }

        .strategies-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: var(--spacing-md);
        }

        .strategy-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

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

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

        .strategy-card:hover {
            border-color: rgba(0, 212, 170, 0.4);
            box-shadow: 0 8px 30px rgba(0, 212, 170, 0.15);
            transform: translateY(-4px);
        }

        .strategy-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(0, 212, 170, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: var(--spacing-sm);
            color: var(--accent-primary);
        }

        .strategy-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: var(--text-primary);
        }

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

        .strategy-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent-primary);
            background: rgba(0, 212, 170, 0.08);
            padding: 4px 12px;
            border-radius: 14px;
            border: 1px solid rgba(0, 212, 170, 0.2);
        }

        .timeline-section {
            background: var(--bg-secondary);
            padding: var(--spacing-2xl) 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .timeline {
            position: relative;
            padding-left: 40px;
            max-width: 800px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 18px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: linear-gradient(180deg, var(--accent-primary), transparent);
        }

        .timeline-item {
            position: relative;
            margin-bottom: var(--spacing-lg);
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -25px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-primary);
            box-shadow: 0 0 12px rgba(0, 212, 170, 0.5);
        }

        .timeline-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

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

        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--spacing-md);
        }

        .data-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            border: 1px solid var(--border-color);
            text-align: left;
        }

        .data-card .data-number {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-glow));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .data-card .data-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

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

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            margin-bottom: var(--spacing-sm);
            border: 1px solid var(--border-color);
            transition: all 0.2s ease;
        }

        .faq-item:hover {
            border-color: var(--accent-primary);
            box-shadow: 0 4px 20px rgba(0, 212, 170, 0.1);
        }

        .faq-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

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

        .cta-section {
            background: linear-gradient(135deg, rgba(0, 212, 170, 0.08) 0%, rgba(0, 240, 255, 0.04) 100%);
            padding: var(--spacing-2xl) 0;
            text-align: center;
            border-radius: var(--radius-xl);
            margin: var(--spacing-2xl) 0;
        }

        .cta-section h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
        }

        .cta-section p {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto var(--spacing-md);
            line-height: 1.7;
        }

        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-col h5 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
        }

        .footer-col p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

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

        .footer-col ul li {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: var(--text-muted);
            transition: color 0.2s ease;
        }

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

        .footer-badges {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: var(--spacing-sm);
        }

        .footer-badge {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 5px 12px;
            border-radius: 14px;
            background: rgba(0, 212, 170, 0.1);
            color: var(--accent-primary);
            border: 1px solid rgba(0, 212, 170, 0.3);
        }

        .footer-bottom {
            text-align: center;
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--border-color);
        }

        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .fab-container {
            position: fixed;
            left: 20px;
            bottom: 50px;
            z-index: 999;
        }

        .fab-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--accent-primary);
            color: var(--accent-primary);
            font-size: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 18px rgba(0, 212, 170, 0.4);
            transition: all 0.3s ease;
            cursor: pointer;
            opacity: 0.85;
        }

        .fab-btn:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 212, 170, 0.6);
        }

        @media (max-width: 1024px) {
            .category-hero-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .category-hero-visual {
                order: -1;
            }
            .category-hero-visual img {
                max-width: 360px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .strategies-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .strategies-grid {
                grid-template-columns: 1fr;
            }
            .category-hero-stats {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-sm);
            }
            .data-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 520px) {
            .category-hero {
                padding: var(--spacing-lg) 0;
            }
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .category-hero-ctas {
                flex-direction: column;
            }
            .btn-primary-glow,
            .btn-outline-glow {
                width: 100%;
                text-align: center;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0A0E17;
            --bg-secondary: #111827;
            --bg-card: #1A1F2E;
            --bg-hover: #20293A;
            --accent-primary: #00D4AA;
            --accent-secondary: #00BFA5;
            --accent-glow: #00F0FF;
            --gold: #FFD700;
            --text-primary: #F5F6F8;
            --text-secondary: #B0B8C5;
            --text-muted: #6B7280;
            --border-color: #2A3344;
            --border-light: #374151;
            --danger: #FF4757;
            --success: #2ED573;
            --warning: #FFA502;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.25);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 96px;
        }

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

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

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        .site-header {
            position: sticky;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(42, 51, 68, 0.6);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: var(--spacing-md);
        }

        .logo {
            font-size: 1.15rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: color 0.2s ease;
            position: relative;
            padding: 4px 0;
        }

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 100%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .btn-login {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            transition: background 0.2s ease;
        }

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        .btn-signup {
            font-size: 0.9rem;
            font-weight: 700;
            color: #000;
            background: var(--accent-primary);
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
            box-shadow: 0 2px 12px rgba(0, 212, 170, 0.3);
        }

        .btn-signup:hover {
            background: #00E6BC;
            box-shadow: 0 4px 20px rgba(0, 212, 170, 0.5);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-primary);
            font-size: 1.6rem;
            padding: 6px;
        }

        .category-hero {
            padding: var(--spacing-lg) 0 var(--spacing-xl);
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(0, 212, 170, 0.03) 0%, rgba(0, 240, 255, 0.02) 100%);
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -80px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 212, 170, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .category-hero-content {
            max-width: 620px;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 212, 170, 0.1);
            color: var(--accent-primary);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: var(--spacing-sm);
            border: 1px solid rgba(0, 212, 170, 0.25);
        }

        .category-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-primary);
            animation: pulse-dot 1.8s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }

        .category-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.5px;
            color: var(--text-primary);
        }

        .category-hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .category-hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
            line-height: 1.7;
            max-width: 560px;
        }

        .category-hero-stats {
            display: flex;
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-md);
            flex-wrap: wrap;
        }

        .stat-item {
            background: var(--bg-card);
            padding: var(--spacing-sm) var(--spacing-md);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            text-align: center;
            min-width: 100px;
        }

        .stat-number {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-primary);
            display: block;
        }

        .stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: block;
            margin-top: 4px;
        }

        .category-hero-ctas {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .btn-primary-cta {
            font-size: 1rem;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            background: var(--accent-primary);
            color: #000;
            box-shadow: var(--shadow-glow);
            transition: all 0.3s ease;
            text-align: center;
        }

        .btn-primary-cta:hover {
            background: #00E6BC;
            box-shadow: 0 0 30px rgba(0, 212, 170, 0.5);
            transform: translateY(-2px);
        }

        .btn-secondary-cta {
            font-size: 1rem;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            background: transparent;
            color: var(--accent-primary);
            border: 2px solid var(--accent-primary);
            transition: all 0.3s ease;
            text-align: center;
        }

        .btn-secondary-cta:hover {
            background: rgba(0, 212, 170, 0.08);
            border-color: #00E6BC;
            color: #00E6BC;
        }

        .category-hero-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }

        .category-hero-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .strategy-section {
            padding: var(--spacing-xl) 0;
        }

        .section-header {
            margin-bottom: var(--spacing-lg);
            max-width: 800px;
        }

        .section-header h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: var(--text-primary);
        }

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

        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }

        .strategy-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            transition: all 0.3s ease;
            position: relative;
        }

        .strategy-card:hover {
            border-color: var(--accent-primary);
            box-shadow: 0 4px 24px rgba(0, 212, 170, 0.15);
            transform: translateY(-2px);
        }

        .strategy-card-icon {
            font-size: 2rem;
            margin-bottom: var(--spacing-xs);
            display: inline-block;
            background: rgba(0, 212, 170, 0.1);
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .strategy-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: var(--text-primary);
        }

        .strategy-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: var(--spacing-sm);
        }

        .strategy-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .strategy-tag {
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 14px;
            background: rgba(0, 212, 170, 0.08);
            color: var(--accent-primary);
            border: 1px solid rgba(0, 212, 170, 0.2);
        }

        .comparison-section {
            padding: var(--spacing-xl) 0;
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            margin: var(--spacing-lg) 0;
        }

        .comparison-section .container {
            background: transparent;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: var(--spacing-md);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .comparison-table th {
            background: var(--bg-hover);
            padding: var(--spacing-sm) var(--spacing-md);
            text-align: left;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--accent-primary);
            border-bottom: 2px solid var(--border-color);
        }

        .comparison-table td {
            padding: var(--spacing-sm) var(--spacing-md);
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .comparison-table .highlight-row {
            background: rgba(0, 212, 170, 0.05);
        }

        .comparison-table .recommended-col {
            color: var(--accent-primary);
            font-weight: 600;
        }

        .process-section {
            padding: var(--spacing-xl) 0;
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
        }

        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            position: relative;
            transition: all 0.3s ease;
        }

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

        .step-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-primary);
            margin-bottom: var(--spacing-xs);
            display: block;
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: var(--text-primary);
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .tips-section {
            padding: var(--spacing-xl) 0;
        }

        .tips-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--spacing-sm);
            margin-top: var(--spacing-md);
            max-width: 900px;
        }

        .tip-item {
            display: flex;
            gap: var(--spacing-sm);
            align-items: flex-start;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            transition: all 0.3s ease;
        }

        .tip-item:hover {
            border-color: var(--accent-primary);
            background: var(--bg-hover);
        }

        .tip-icon {
            font-size: 1.4rem;
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            background: rgba(0, 212, 170, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .tip-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-primary);
        }

        .tip-content p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .faq-section {
            padding: var(--spacing-xl) 0;
        }

        .faq-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--spacing-sm);
            margin-top: var(--spacing-md);
            max-width: 900px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            transition: all 0.3s ease;
            cursor: pointer;
        }

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

        .faq-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
        }

        .faq-item h4::before {
            content: '▸';
            color: var(--accent-primary);
            font-size: 1.2rem;
            transition: transform 0.3s ease;
        }

        .faq-item.open h4::before {
            transform: rotate(90deg);
        }

        .faq-item p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
            padding-left: 28px;
        }

        .cta-section {
            padding: var(--spacing-xl) 0;
            text-align: center;
            background: linear-gradient(135deg, rgba(0, 212, 170, 0.05) 0%, rgba(0, 240, 255, 0.03) 100%);
            border-radius: var(--radius-lg);
            margin: var(--spacing-lg) 0;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
        }

        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-col h5 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
        }

        .footer-col p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: var(--spacing-sm);
        }

        .footer-badges {
            display: flex;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }

        .footer-badge {
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 14px;
            background: rgba(255, 215, 0, 0.1);
            color: var(--gold);
            border: 1px solid rgba(255, 215, 0, 0.3);
        }

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

        .footer-col ul li {
            margin-bottom: var(--spacing-xs);
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        .footer-col ul li a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: var(--spacing-md);
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--accent-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: all 0.3s ease;
            cursor: pointer;
            color: var(--accent-glow);
        }

        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.7);
        }

        @media (max-width: 1024px) {
            .category-hero-grid {
                grid-template-columns: 1fr;
            }
            .category-hero-image {
                order: -1;
                max-height: 320px;
                overflow: hidden;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: var(--bg-secondary);
                flex-direction: column;
                padding: var(--spacing-md);
                gap: var(--spacing-sm);
                border-bottom: 2px solid var(--border-color);
            }
            .main-nav.open {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .category-hero-stats {
                flex-direction: column;
            }
            .category-hero-ctas {
                flex-direction: column;
            }
            .btn-primary-cta,
            .btn-secondary-cta {
                width: 100%;
                text-align: center;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0A0E17;
            --bg-secondary: #111827;
            --bg-card: #1A1F2E;
            --bg-hover: #20293A;
            --accent-primary: #00D4AA;
            --accent-secondary: #00BFA5;
            --accent-glow: #00F0FF;
            --gold: #FFD700;
            --text-primary: #F5F6F8;
            --text-secondary: #B0B8C5;
            --text-muted: #6B7280;
            --border-color: #2A3344;
            --border-light: #374151;
            --danger: #FF4757;
            --success: #2ED573;
            --warning: #FFA502;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.25);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 96px;
        }

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

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

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(42, 51, 68, 0.6);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: var(--spacing-md);
        }

        .logo {
            font-size: 1.15rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: color 0.2s ease;
            position: relative;
            padding: 4px 0;
        }

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 100%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .btn-login {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            transition: background 0.2s ease;
        }

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        .btn-signup {
            font-size: 0.9rem;
            font-weight: 700;
            color: #000;
            background: var(--accent-primary);
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
            box-shadow: 0 2px 12px rgba(0, 212, 170, 0.3);
        }

        .btn-signup:hover {
            background: #00E6BC;
            box-shadow: 0 4px 20px rgba(0, 212, 170, 0.5);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-primary);
            font-size: 1.6rem;
            padding: 6px;
        }

        /* Hero Section */
        .hero {
            padding: var(--spacing-xl) 0 var(--spacing-2xl);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 212, 170, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content {
            max-width: 620px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 215, 0, 0.12);
            color: var(--gold);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: var(--spacing-sm);
            border: 1px solid rgba(255, 215, 0, 0.3);
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--gold);
            animation: pulse-dot 1.8s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(1.8);
            }
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.5px;
        }

        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--gold) 0%, #FFA502 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
            line-height: 1.7;
            max-width: 560px;
        }

        .hero-ctas {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .btn-gold {
            font-size: 1rem;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, #FFD700 0%, #FFA502 100%);
            color: #1A1A1A;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.35);
            transition: all 0.3s ease;
            text-align: center;
        }

        .btn-gold:hover {
            box-shadow: 0 6px 30px rgba(255, 215, 0, 0.6);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            font-size: 1rem;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            background: transparent;
            color: var(--text-primary);
            border: 2px solid var(--border-light);
            transition: all 0.3s ease;
        }

        .btn-outline-light:hover {
            border-color: var(--gold);
            background: rgba(255, 215, 0, 0.05);
        }

        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(255, 215, 0, 0.15);
            border: 1px solid var(--border-color);
        }

        /* Section Common */
        .section {
            padding: var(--spacing-xl) 0;
        }

        .section-header {
            margin-bottom: var(--spacing-lg);
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.4px;
            margin-bottom: var(--spacing-xs);
            color: var(--text-primary);
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 700px;
            line-height: 1.6;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: var(--spacing-xs);
        }

        /* Promo Cards */
        .promo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--spacing-md);
        }

        .promo-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .promo-card:hover {
            border-color: var(--gold);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.15);
            transform: translateY(-4px);
        }

        .promo-tag {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--danger);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }

        .promo-tag.vip {
            background: linear-gradient(135deg, #FFD700 0%, #FFA502 100%);
            color: #1A1A1A;
        }

        .promo-icon {
            width: 48px;
            height: 48px;
            background: rgba(255, 215, 0, 0.1);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: var(--spacing-sm);
            color: var(--gold);
        }

        .promo-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            color: var(--text-primary);
        }

        .promo-card .promo-value {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--gold);
            margin-bottom: var(--spacing-xs);
        }

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

        .promo-card .btn-claim {
            display: inline-block;
            font-size: 0.9rem;
            font-weight: 700;
            color: #1A1A1A;
            background: var(--gold);
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
        }

        .promo-card .btn-claim:hover {
            background: #FFE44D;
            box-shadow: 0 4px 16px rgba(255, 215, 0, 0.4);
        }

        /* Comparison Table */
        .comparison-table-wrap {
            overflow-x: auto;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: var(--spacing-sm);
        }

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

        .comparison-table th,
        .comparison-table td {
            padding: 14px 18px;
            border-bottom: 1px solid var(--border-color);
        }

        .comparison-table th {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .comparison-table td {
            font-size: 0.95rem;
            color: var(--text-secondary);
        }

        .comparison-table .highlight-cell {
            color: var(--gold);
            font-weight: 700;
        }

        .comparison-table .check {
            color: var(--success);
            font-weight: 700;
        }

        /* Steps */
        .steps-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .step-item {
            display: flex;
            gap: var(--spacing-md);
            align-items: flex-start;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

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

        .step-number {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, #FFD700 0%, #FFA502 100%);
            color: #1A1A1A;
            font-weight: 900;
            font-size: 1.2rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .step-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-primary);
        }

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

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all 0.25s ease;
        }

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

        .faq-question {
            width: 100%;
            background: transparent;
            color: var(--text-primary);
            font-size: 1rem;
            font-weight: 600;
            padding: 18px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            text-align: left;
            transition: color 0.2s ease;
        }

        .faq-question:hover {
            color: var(--gold);
        }

        .faq-question .arrow {
            font-size: 1.2rem;
            transition: transform 0.3s ease;
        }

        .faq-answer {
            padding: 0 20px 18px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }

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

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

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.08) 0%, rgba(0, 212, 170, 0.04) 100%);
            border-radius: var(--radius-xl);
            border: 1px solid rgba(255, 215, 0, 0.25);
            padding: var(--spacing-xl);
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
        }

        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-col h5 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
        }

        .footer-col p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .footer-col ul li,
        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }

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

        .footer-badges {
            display: flex;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
            margin-top: var(--spacing-sm);
        }

        .footer-badge {
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 20px;
            background: rgba(255, 215, 0, 0.15);
            color: var(--gold);
            border: 1px solid rgba(255, 215, 0, 0.3);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: var(--spacing-md);
            text-align: center;
        }

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

        /* FAB Left */
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 900;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, #FFD700 0%, #FFA502 100%);
            color: #1A1A1A;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.4);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 30px rgba(255, 215, 0, 0.6);
        }

        .fab-left .notification-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            background: var(--danger);
            border-radius: 50%;
            animation: pulse-dot 1.5s infinite;
        }

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

            .hero-visual {
                order: -1;
            }

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

            .main-nav {
                gap: 18px;
            }

            .nav-link {
                font-size: 0.85rem;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: rgba(10, 14, 23, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: var(--spacing-md);
                gap: var(--spacing-sm);
                border-bottom: 1px solid var(--border-color);
            }

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

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

            .hero h1 {
                font-size: 1.8rem;
            }

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

            .btn-gold,
            .btn-outline-light {
                width: 100%;
                text-align: center;
            }

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

            .section-header h2 {
                font-size: 1.5rem;
            }

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

        @media (max-width: 520px) {
            .header-inner {
                gap: var(--spacing-sm);
            }

            .logo {
                font-size: 0.95rem;
            }

            .nav-actions {
                gap: 8px;
            }

            .btn-login,
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }

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

            .hero {
                padding: var(--spacing-lg) 0;
            }

            .hero h1 {
                font-size: 1.5rem;
            }

            .promo-card .promo-value {
                font-size: 1.4rem;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0A0E17;
            --bg-secondary: #111827;
            --bg-card: #1A1F2E;
            --bg-hover: #20293A;
            --accent-primary: #00D4AA;
            --accent-secondary: #00BFA5;
            --accent-glow: #00F0FF;
            --gold: #FFD700;
            --text-primary: #F5F6F8;
            --text-secondary: #B0B8C5;
            --text-muted: #6B7280;
            --border-color: #2A3344;
            --border-light: #374151;
            --danger: #FF4757;
            --success: #2ED573;
            --warning: #FFA502;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.25);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 96px;
        }

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

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

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(42, 51, 68, 0.6);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: var(--spacing-md);
        }

        .logo {
            font-size: 1.15rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: color 0.2s ease;
            position: relative;
            padding: 4px 0;
        }

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 100%;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .btn-login {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            transition: background 0.2s ease;
        }

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        .btn-signup {
            font-size: 0.9rem;
            font-weight: 700;
            color: #000;
            background: var(--accent-primary);
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
            box-shadow: 0 2px 12px rgba(0, 212, 170, 0.3);
        }

        .btn-signup:hover {
            background: #00E6BC;
            box-shadow: 0 4px 20px rgba(0, 212, 170, 0.5);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-primary);
            font-size: 1.6rem;
            padding: 6px;
        }

        /* Hero Section */
        .hero {
            padding: var(--spacing-xl) 0 var(--spacing-2xl);
            position: relative;
            overflow: hidden;
            background: linear-gradient(180deg, rgba(0, 212, 170, 0.03) 0%, transparent 100%);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 212, 170, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content {
            max-width: 620px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 71, 87, 0.1);
            color: var(--danger);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: var(--spacing-sm);
            border: 1px solid rgba(255, 71, 87, 0.25);
            animation: pulse-badge 2s infinite;
        }

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

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--danger);
            animation: pulse-dot 1.8s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                transform: scale(1);
                opacity: 1;
            }
            50% {
                transform: scale(1.8);
                opacity: 0.5;
            }
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.5px;
        }

        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
            line-height: 1.7;
            max-width: 560px;
        }

        .live-countdown {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            background: var(--bg-card);
            padding: var(--spacing-sm) var(--spacing-md);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-bottom: var(--spacing-md);
        }

        .countdown-item {
            background: var(--bg-hover);
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            text-align: center;
            min-width: 70px;
        }

        .countdown-number {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-primary);
            line-height: 1;
        }

        .countdown-label {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .hero-ctas {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .btn-remind {
            font-size: 1rem;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            background: var(--danger);
            color: #fff;
            box-shadow: 0 4px 20px rgba(255, 71, 87, 0.4);
            transition: all 0.3s ease;
            text-align: center;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-remind:hover {
            background: #FF5E72;
            box-shadow: 0 6px 28px rgba(255, 71, 87, 0.6);
            transform: translateY(-2px);
        }

        .btn-claim {
            font-size: 1rem;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            background: transparent;
            color: var(--accent-primary);
            border: 2px solid var(--accent-primary);
            transition: all 0.3s ease;
            text-align: center;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-claim:hover {
            background: rgba(0, 212, 170, 0.1);
            border-color: #00E6BC;
            color: #00E6BC;
        }

        .hero-visual {
            background: linear-gradient(135deg, rgba(0, 212, 170, 0.08) 0%, rgba(0, 240, 255, 0.04) 100%);
            border-radius: var(--radius-xl);
            border: 1px solid rgba(42, 51, 68, 0.5);
            padding: var(--spacing-md);
            text-align: center;
        }

        .hero-visual img {
            border-radius: var(--radius-lg);
            width: 100%;
            object-fit: cover;
        }

        /* Section Common */
        .section {
            padding: var(--spacing-2xl) 0;
        }

        .section-header {
            margin-bottom: var(--spacing-lg);
        }

        .section-tag {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent-primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: var(--spacing-xs);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
            max-width: 700px;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
        }

        /* Offer Cards */
        .offers-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }

        .offer-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .offer-card:hover {
            border-color: var(--accent-primary);
            box-shadow: 0 8px 32px rgba(0, 212, 170, 0.15);
            transform: translateY(-3px);
        }

        .offer-card.featured {
            border-color: var(--gold);
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.05) 0%, var(--bg-card) 100%);
        }

        .offer-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--danger);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            text-transform: uppercase;
        }

        .offer-badge.hot {
            background: var(--danger);
            animation: pulse-badge 2s infinite;
        }

        .offer-icon {
            font-size: 2.2rem;
            color: var(--gold);
            margin-bottom: var(--spacing-sm);
        }

        .offer-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
        }

        .offer-value {
            font-size: 2rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: var(--spacing-xs);
        }

        .offer-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: var(--spacing-sm);
        }

        .offer-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .offer-meta i {
            color: var(--accent-primary);
            font-size: 0.7rem;
        }

        .btn-offer {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            font-weight: 700;
            color: #000;
            background: var(--gold);
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            margin-top: var(--spacing-sm);
            transition: all 0.25s ease;
        }

        .btn-offer:hover {
            background: #FFE44D;
            box-shadow: 0 4px 16px rgba(255, 215, 0, 0.4);
            transform: translateY(-1px);
        }

        /* Steps Section */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            text-align: left;
        }

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

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(0, 212, 170, 0.15);
            color: var(--accent-primary);
            font-weight: 800;
            border-radius: 50%;
            margin-bottom: var(--spacing-sm);
            font-size: 1.1rem;
        }

        .step-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
        }

        .step-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

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

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all 0.3s ease;
        }

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

        .faq-question {
            padding: var(--spacing-md);
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            color: var(--text-primary);
            background: transparent;
            width: 100%;
            text-align: left;
        }

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

        .faq-answer {
            padding: 0 var(--spacing-md) var(--spacing-md);
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 0.95rem;
            display: none;
        }

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

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

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 212, 170, 0.06) 0%, rgba(0, 240, 255, 0.03) 100%);
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl);
            text-align: center;
            border: 1px solid rgba(42, 51, 68, 0.4);
        }

        .cta-title {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
        }

        .cta-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-btn {
            font-size: 1.1rem;
            font-weight: 700;
            padding: 16px 40px;
            border-radius: var(--radius-md);
            background: var(--accent-primary);
            color: #000;
            box-shadow: var(--shadow-glow);
            transition: all 0.3s ease;
            display: inline-block;
        }

        .cta-btn:hover {
            background: #00E6BC;
            box-shadow: 0 0 30px rgba(0, 212, 170, 0.5);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-2xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: var(--accent-primary);
        }

        .footer-col p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

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

        .footer-col ul li {
            margin-bottom: var(--spacing-xs);
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .footer-col ul li a {
            color: var(--text-secondary);
            transition: color 0.2s;
        }

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

        .footer-badges {
            display: flex;
            gap: var(--spacing-xs);
            margin-top: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .footer-badge {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            background: rgba(0, 212, 170, 0.1);
            color: var(--accent-primary);
            border: 1px solid rgba(0, 212, 170, 0.3);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: var(--spacing-md);
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--accent-primary);
            box-shadow: 0 0 18px rgba(0, 212, 170, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 1.3rem;
            transition: all 0.3s ease;
            opacity: 0.7;
            animation: fab-float 3s infinite;
        }

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

        .fab:hover {
            opacity: 1;
            box-shadow: 0 0 28px rgba(0, 212, 170, 0.7);
            transform: scale(1.1);
        }

        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: var(--danger);
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: pulse-dot 1.8s infinite;
        }

        /* Responsive */
        @media(max-width:1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
            }
            .hero-visual {
                order: -1;
            }
            .offers-grid {
                grid-template-columns: 1fr;
            }
            .steps-list {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
        }

        @media(max-width:768px) {
            .main-nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: rgba(10, 14, 23, 0.98);
                padding: var(--spacing-md);
                border-bottom: 1px solid var(--border-color);
            }
            .main-nav.active {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .steps-list {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media(max-width:520px) {
            .hero-ctas {
                flex-direction: column;
            }
            .btn-remind,
            .btn-claim {
                width: 100%;
                justify-content: center;
            }
            .cta-title {
                font-size: 1.4rem;
            }
        }