/* roulang page: index */
:root {
    --primary: #8B0000;
    --primary-dark: #4A0007;
    --accent: #FFD700;
    --accent-warm: #FF9F00;
    --bg-deep: #0a0a0a;
    --bg-card: #1a1a1a;
    --bg-elevated: #222222;
    --text-primary: #FFFDF9;
    --text-secondary: #FEF08A;
    --text-muted: #b0a080;
    --border-gold: rgba(255,215,0,0.3);
    --border-subtle: rgba(255,255,255,0.08);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
    --shadow-md: 0 6px 20px rgba(0,0,0,0.5);
    --shadow-gold: 0 4px 20px rgba(255,215,0,0.15);
    --shadow-glow: 0 0 25px rgba(255,215,0,0.25);
    --font-heading: 'Segoe UI', 'Noto Sans', system-ui, -apple-system, sans-serif;
    --font-body: 'Segoe UI', 'Noto Sans', system-ui, -apple-system, sans-serif;
    --transition-fast: 0.18s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4,0,0.2,1);
}
*,*::before,*::after {box-sizing:border-box; margin:0; padding:0;}
html {scroll-behavior:smooth; font-size:16px;}
body {
    font-family:var(--font-body);
    background:var(--bg-deep);
    color:var(--text-primary);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
}
img {max-width:100%; height:auto; display:block;}
a {text-decoration:none; color:inherit; transition:color var(--transition-fast);}
a:hover {color:var(--accent);}
.container-custom {max-width:1240px; padding-left:20px; padding-right:20px; margin:0 auto;}
@media (max-width:767px) {.container-custom {padding-left:16px; padding-right:16px;}}
/* Navbar */
.navbar-custom {
    position:fixed; top:0; left:0; width:100%; z-index:1050;
    background:rgba(10,10,10,0.92); backdrop-filter:blur(18px);
    border-bottom:1px solid var(--border-gold);
    padding:0; min-height:62px; display:flex; align-items:center;
}
.navbar-custom .navbar-inner {
    display:flex; align-items:center; justify-content:space-between;
    width:100%; max-width:1240px; margin:0 auto; padding:8px 20px;
}
.navbar-brand-custom {
    font-family:var(--font-heading);
    font-weight:800; font-size:1.2rem; letter-spacing:-0.3px;
    background:linear-gradient(180deg, #FFD700 0%, #FF9F00 100%);
    -webkit-background-clip:text; -webkit-text-fill-color:transparent;
    background-clip:text; white-space:nowrap;
}
.nav-links {display:flex; align-items:center; gap:4px; list-style:none; margin:0; padding:0;}
.nav-links li a {
    display:inline-block; padding:10px 15px; border-radius:var(--radius-sm);
    font-weight:600; font-size:0.95rem; color:var(--text-muted);
    transition: all var(--transition-fast); white-space:nowrap;
}
.nav-links li a:hover,
.nav-links li a.active {color:var(--accent); background:rgba(255,215,0,0.08);}
.nav-actions {display:flex; align-items:center; gap:10px;}
.btn-nav-login {
    background:transparent; border:1px solid var(--border-gold); color:var(--accent);
    padding:8px 18px; border-radius:var(--radius-sm); font-weight:700; font-size:0.9rem;
    cursor:pointer; transition:all var(--transition-fast); white-space:nowrap;
}
.btn-nav-login:hover {background:rgba(255,215,0,0.1); border-color:var(--accent);}
.btn-nav-signup {
    background:linear-gradient(135deg, var(--accent), var(--accent-warm));
    border:none; color:#1a0a00; padding:9px 20px; border-radius:var(--radius-sm);
    font-weight:800; font-size:0.9rem; cursor:pointer;
    box-shadow:var(--shadow-gold); transition:all var(--transition-fast); white-space:nowrap;
}
.btn-nav-signup:hover {box-shadow:var(--shadow-glow); transform:translateY(-1px);}
.mobile-toggle {
    display:none; background:none; border:none; color:var(--accent);
    font-size:1.6rem; cursor:pointer; padding:4px 8px;
}
@media (max-width:991px) {
    .nav-links {display:none; position:absolute; top:62px; left:0; width:100%;
        background:rgba(10,10,10,0.98); flex-direction:column; padding:14px 0;
        border-bottom:1px solid var(--border-gold); z-index:1049;
    }
    .nav-links.show {display:flex;}
    .nav-links li a {padding:12px 24px; width:100%; border-radius:0;}
    .mobile-toggle {display:block;}
}
@media (max-width:520px) {
    .navbar-brand-custom {font-size:0.98rem;}
    .btn-nav-login, .btn-nav-signup {font-size:0.78rem; padding:6px 12px;}
}
/* Hero */
.hero-section {
    position:relative; min-height:90vh; display:flex; align-items:center;
    background:linear-gradient(135deg, #4A0007 0%, #1a0a00 50%, #0a0a0a 100%);
    overflow:hidden; padding:100px 0 60px;
}
.hero-section::before {
    content:''; position:absolute; top:0; right:0; width:55%; height:100%;
    background:url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
    opacity:0.18; mask-image:linear-gradient(to left, rgba(0,0,0,1) 30%, rgba(0,0,0,0) 100%);
    -webkit-mask-image:linear-gradient(to left, rgba(0,0,0,1) 30%, rgba(0,0,0,0) 100%);
}
.hero-section .hero-overlay {
    position:absolute; inset:0;
    background:radial-gradient(ellipse at 30% 50%, rgba(255,215,0,0.06) 0%, transparent 70%);
}
.hero-content {position:relative; z-index:2; max-width:640px;}
.hero-badge {
    display:inline-block; background:rgba(255,215,0,0.12);
    border:1px solid var(--border-gold); color:var(--accent);
    padding:6px 16px; border-radius:40px; font-weight:700; font-size:0.85rem;
    letter-spacing:0.5px; margin-bottom:16px;
}
.hero-content h1 {
    font-family:var(--font-heading); font-weight:900; font-size:3rem;
    line-height:1.15; margin-bottom:18px; color:var(--text-primary);
}
.hero-content h1 .gold {color:var(--accent);}
.hero-desc {
    font-size:1.1rem; color:var(--text-muted); line-height:1.65; margin-bottom:28px;
    max-width:530px;
}
.hero-cta-group {display:flex; flex-wrap:wrap; gap:14px; margin-bottom:28px;}
.btn-hero-primary {
    background:linear-gradient(135deg, var(--accent), var(--accent-warm));
    border:none; color:#1a0a00; padding:14px 32px; border-radius:var(--radius-md);
    font-weight:800; font-size:1.05rem; cursor:pointer;
    box-shadow:var(--shadow-gold); transition:all var(--transition-smooth);
}
.btn-hero-primary:hover {box-shadow:var(--shadow-glow); transform:translateY(-2px);}
.btn-hero-outline {
    background:transparent; border:2px solid var(--border-gold); color:var(--accent);
    padding:13px 30px; border-radius:var(--radius-md); font-weight:700; font-size:1rem;
    cursor:pointer; transition:all var(--transition-smooth);
}
.btn-hero-outline:hover {background:rgba(255,215,0,0.08); border-color:var(--accent);}
.hero-stats {display:flex; gap:30px; flex-wrap:wrap;}
.hero-stat-item {text-align:left;}
.hero-stat-num {font-size:2rem; font-weight:900; color:var(--accent); line-height:1;}
.hero-stat-label {font-size:0.83rem; color:var(--text-muted); margin-top:4px;}
.hero-visual {
    position:absolute; right:5%; top:50%; transform:translateY(-50%);
    z-index:1; max-width:420px; display:none;
}
@media (min-width:992px) {.hero-visual {display:block;}}
@media (max-width:991px) {
    .hero-section {min-height:auto; padding:90px 0 50px;}
    .hero-content h1 {font-size:2.2rem;}
    .hero-desc {font-size:1rem;}
}
@media (max-width:520px) {
    .hero-content h1 {font-size:1.7rem;}
    .hero-stats {gap:18px;}
    .hero-stat-num {font-size:1.5rem;}
}
/* Section */
.section-block {padding:64px 0;}
.section-label {
    display:inline-block; font-size:0.82rem; font-weight:700; text-transform:uppercase;
    letter-spacing:1.5px; color:var(--accent); margin-bottom:10px;
}
.section-title {
    font-family:var(--font-heading); font-weight:900; font-size:2rem;
    color:var(--text-primary); margin-bottom:12px; line-height:1.25;
}
.section-desc {color:var(--text-muted); font-size:1.02rem; max-width:660px; margin-bottom:30px; line-height:1.6;}
/* Cards */
.card-custom {
    background:var(--bg-card); border:1px solid var(--border-subtle);
    border-radius:var(--radius-lg); padding:26px 24px; transition:all var(--transition-smooth);
}
.card-custom:hover {border-color:var(--border-gold); box-shadow:var(--shadow-gold); transform:translateY(-3px);}
.card-icon {
    width:48px; height:48px; border-radius:var(--radius-sm);
    background:linear-gradient(135deg, rgba(255,215,0,0.2), rgba(255,159,0,0.15));
    display:flex; align-items:center; justify-content:center;
    font-size:1.4rem; color:var(--accent); margin-bottom:14px;
}
.card-title {font-weight:800; font-size:1.15rem; margin-bottom:6px; color:var(--text-primary);}
.card-text {font-size:0.93rem; color:var(--text-muted); line-height:1.55; margin:0;}
/* Tiers */
.tier-grid {display:grid; grid-template-columns:repeat(auto-fit,minmax(250px,1fr)); gap:20px;}
.tier-card {
    background:var(--bg-elevated); border:1px solid var(--border-subtle);
    border-radius:var(--radius-lg); padding:28px 22px; text-align:left;
    transition:all var(--transition-smooth); position:relative;
}
.tier-card.featured {border-color:var(--accent); box-shadow:var(--shadow-gold);}
.tier-card.featured::before {
    content:'Phổ Biến Nhất'; position:absolute; top:-12px; right:18px;
    background:var(--accent); color:#1a0a00; font-size:0.72rem; font-weight:800;
    padding:4px 12px; border-radius:20px; letter-spacing:0.3px;
}
.tier-name {font-weight:900; font-size:1.2rem; color:var(--accent); margin-bottom:4px;}
.tier-price {font-size:1.8rem; font-weight:900; color:var(--text-primary); margin-bottom:6px;}
.tier-desc {font-size:0.88rem; color:var(--text-muted); margin-bottom:14px; line-height:1.45;}
.tier-features {list-style:none; padding:0; margin:0 0 18px;}
.tier-features li {padding:6px 0; font-size:0.9rem; color:var(--text-secondary);}
.tier-features li i {color:var(--accent); margin-right:6px; width:16px;}
.btn-tier {
    display:inline-block; width:100%; text-align:center; padding:11px 20px;
    border-radius:var(--radius-sm); font-weight:800; font-size:0.93rem;
    border:1px solid var(--border-gold); color:var(--accent);
    background:transparent; cursor:pointer; transition:all var(--transition-fast);
}
.btn-tier:hover {background:rgba(255,215,0,0.1);}
.tier-card.featured .btn-tier {
    background:linear-gradient(135deg, var(--accent), var(--accent-warm));
    border:none; color:#1a0a00;
}
/* Timeline */
.timeline {position:relative; padding-left:32px;}
.timeline::before {
    content:''; position:absolute; left:14px; top:6px; bottom:6px;
    width:2px; background:var(--border-gold);
}
.timeline-item {margin-bottom:28px; position:relative;}
.timeline-item::before {
    content:''; position:absolute; left:-24px; top:6px;
    width:10px; height:10px; border-radius:50%;
    background:var(--accent); box-shadow:0 0 8px rgba(255,215,0,0.5);
}
.timeline-date {font-size:0.78rem; font-weight:700; color:var(--accent); text-transform:uppercase; letter-spacing:1px;}
.timeline-title {font-weight:800; font-size:1.05rem; margin:2px 0 4px;}
.timeline-text {font-size:0.9rem; color:var(--text-muted); line-height:1.5; margin:0;}
/* Media Zone */
.media-grid {display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:20px;}
.media-card {
    border-radius:var(--radius-lg); overflow:hidden; background:var(--bg-card);
    border:1px solid var(--border-subtle); transition:all var(--transition-smooth);
}
.media-card:hover {border-color:var(--border-gold); box-shadow:var(--shadow-gold); transform:translateY(-3px);}
.media-card img {width:100%; height:200px; object-fit:cover;}
.media-body {padding:18px;}
.media-tag {
    display:inline-block; font-size:0.73rem; font-weight:700; background:rgba(255,215,0,0.15);
    color:var(--accent); padding:3px 10px; border-radius:20px; margin-bottom:6px;
}
.media-title {font-weight:800; font-size:1.05rem; margin-bottom:4px; color:var(--text-primary);}
.media-meta {font-size:0.82rem; color:var(--text-muted);}
/* Float bar */
.float-bar {
    position:fixed; bottom:0; left:0; width:100%; z-index:1040;
    background:rgba(10,10,10,0.95); border-top:1px solid var(--border-gold);
    backdrop-filter:blur(14px); display:flex; align-items:center; justify-content:center;
    padding:10px 16px; gap:14px; flex-wrap:wrap;
}
.float-bar-text {font-weight:700; font-size:0.93rem; color:var(--accent);}
.btn-float {
    background:linear-gradient(135deg, var(--accent), var(--accent-warm));
    color:#1a0a00; border:none; padding:10px 22px; border-radius:var(--radius-sm);
    font-weight:800; font-size:0.9rem; cursor:pointer; box-shadow:var(--shadow-gold);
    transition:all var(--transition-fast);
}
.btn-float:hover {box-shadow:var(--shadow-glow);}
/* News list */
.news-row {display:flex; gap:24px; flex-wrap:wrap;}
.news-list {flex:1; min-width:280px;}
.news-list-item {
    padding:14px 0; border-bottom:1px solid var(--border-subtle);
    display:flex; gap:14px; align-items:flex-start; transition:all var(--transition-fast);
}
.news-list-item:hover {border-color:var(--border-gold);}
.news-list-item .news-date {
    font-size:0.78rem; font-weight:700; color:var(--accent); white-space:nowrap; min-width:70px;
}
.news-list-item .news-link {font-weight:700; font-size:0.96rem; color:var(--text-primary);}
.news-list-item .news-link:hover {color:var(--accent);}
.news-list-item .news-excerpt {font-size:0.83rem; color:var(--text-muted); margin-top:2px; line-height:1.4;}
.news-sidebar {width:280px; flex-shrink:0;}
.news-sidebar-card {
    background:var(--bg-card); border:1px solid var(--border-subtle);
    border-radius:var(--radius-md); padding:18px;
}
.news-sidebar-card h4 {font-weight:800; font-size:1rem; color:var(--accent); margin-bottom:10px;}
.news-sidebar-card ul {list-style:none; padding:0; margin:0;}
.news-sidebar-card ul li {padding:7px 0; border-bottom:1px solid var(--border-subtle); font-size:0.88rem;}
.news-sidebar-card ul li a {color:var(--text-muted);}
.news-sidebar-card ul li a:hover {color:var(--accent);}
@media (max-width:768px) {.news-sidebar {width:100%;}}
/* FAQ */
.faq-item {
    border-bottom:1px solid var(--border-subtle); padding:16px 0;
}
.faq-q {font-weight:800; font-size:1.05rem; cursor:pointer; color:var(--text-primary); transition:color var(--transition-fast);}
.faq-q:hover {color:var(--accent);}
.faq-a {font-size:0.94rem; color:var(--text-muted); margin-top:6px; line-height:1.55; display:none;}
.faq-a.show {display:block;}
/* Footer */
.footer-custom {
    background:var(--bg-elevated); border-top:1px solid var(--border-gold);
    padding:44px 0 20px; margin-top:10px;
}
.footer-grid {display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:28px;}
.footer-col h5 {
    font-weight:800; font-size:1rem; color:var(--accent); margin-bottom:12px;
}
.footer-col ul {list-style:none; padding:0;}
.footer-col ul li {padding:4px 0;}
.footer-col ul li a {font-size:0.9rem; color:var(--text-muted);}
.footer-col ul li a:hover {color:var(--accent);}
.footer-bottom {
    margin-top:28px; padding-top:16px; border-top:1px solid var(--border-subtle);
    text-align:center; font-size:0.83rem; color:var(--text-muted);
}
/* FAB */
.fab-left {
    position:fixed; left:16px; bottom:90px; z-index:1050;
    width:52px; height:52px; border-radius:50%;
    background:var(--bg-card); border:2px solid var(--accent);
    display:flex; align-items:center; justify-content:center;
    cursor:pointer; box-shadow:var(--shadow-gold); transition:all var(--transition-smooth);
    font-size:1.3rem; color:var(--accent); animation:pulse-fab 2.2s infinite;
}
.fab-left:hover {transform:scale(1.1); box-shadow:var(--shadow-glow);}
@keyframes pulse-fab {
    0%,100%{box-shadow:0 4px 20px rgba(255,215,0,0.15);}
    50%{box-shadow:0 4px 28px rgba(255,215,0,0.35);}
}
.fab-left .fab-dot {
    position:absolute; top:4px; right:4px; width:10px; height:10px;
    background:#D32F2F; border-radius:50%; animation:blink-dot 1.2s infinite;
}
@keyframes blink-dot {0%,100%{opacity:1;}50%{opacity:0.3;}}
@media (max-width:520px) {.fab-left {width:44px; height:44px; bottom:80px; left:10px;}}

/* roulang page: article */
:root {
        --primary: #8B0000;
        --primary-dark: #4A0007;
        --accent: #FFD700;
        --accent-warm: #FF9F00;
        --bg-deep: #0a0a0a;
        --bg-card: #1a1a1a;
        --bg-elevated: #222222;
        --text-primary: #FFFDF9;
        --text-secondary: #FEF08A;
        --text-muted: #b0a080;
        --border-gold: rgba(255,215,0,0.3);
        --border-subtle: rgba(255,255,255,0.08);
        --radius-sm: 8px;
        --radius-md: 14px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
        --shadow-md: 0 6px 20px rgba(0,0,0,0.5);
        --shadow-gold: 0 4px 20px rgba(255,215,0,0.15);
        --shadow-glow: 0 0 25px rgba(255,215,0,0.25);
        --font-heading: 'Segoe UI', 'Noto Sans', system-ui, -apple-system, sans-serif;
        --font-body: 'Segoe UI', 'Noto Sans', system-ui, -apple-system, sans-serif;
        --transition-fast: 0.18s ease;
        --transition-smooth: 0.3s cubic-bezier(0.4,0,0.2,1);
    }

    * {
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
        font-size: 16px;
    }

    body {
        font-family: var(--font-body);
        background: var(--bg-deep);
        color: var(--text-primary);
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
        overflow-x: hidden;
        padding-top: 62px;
    }

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

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

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

    .container-custom {
        max-width: 1240px;
        padding-left: 20px;
        padding-right: 20px;
        margin: 0 auto;
    }

    /* Navbar */
    .navbar-custom {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 1050;
        background: rgba(10,10,10,0.92);
        backdrop-filter: blur(18px);
        border-bottom: 1px solid var(--border-gold);
        padding: 0;
        min-height: 62px;
        display: flex;
        align-items: center;
    }

    .navbar-custom .navbar-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        max-width: 1240px;
        margin: 0 auto;
        padding: 8px 20px;
    }

    .navbar-brand-custom {
        font-family: var(--font-heading);
        font-weight: 800;
        font-size: 1.2rem;
        letter-spacing: -0.3px;
        background: linear-gradient(180deg, #FFD700 0%, #FF9F00 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        white-space: nowrap;
    }

    .nav-links {
        display: flex;
        align-items: center;
        gap: 4px;
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .nav-links li a {
        display: inline-block;
        padding: 10px 15px;
        border-radius: var(--radius-sm);
        font-weight: 600;
        font-size: 0.95rem;
        color: var(--text-muted);
        transition: all var(--transition-fast);
        white-space: nowrap;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
        color: var(--accent);
        background: rgba(255,215,0,0.08);
    }

    .nav-actions {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .btn-nav-login {
        background: transparent;
        border: 1px solid var(--border-gold);
        color: var(--accent);
        padding: 8px 18px;
        border-radius: var(--radius-sm);
        font-weight: 700;
        font-size: 0.9rem;
        cursor: pointer;
        transition: all var(--transition-fast);
        white-space: nowrap;
    }

    .btn-nav-login:hover {
        background: rgba(255,215,0,0.1);
        border-color: var(--accent);
    }

    .btn-nav-signup {
        background: linear-gradient(135deg, var(--accent), var(--accent-warm));
        border: none;
        color: #1a0a00;
        padding: 9px 20px;
        border-radius: var(--radius-sm);
        font-weight: 800;
        font-size: 0.9rem;
        cursor: pointer;
        box-shadow: var(--shadow-gold);
        transition: all var(--transition-fast);
        white-space: nowrap;
    }

    .btn-nav-signup:hover {
        box-shadow: var(--shadow-glow);
        transform: translateY(-1px);
    }

    .mobile-toggle {
        display: none;
        background: none;
        border: none;
        color: var(--accent);
        font-size: 1.6rem;
        cursor: pointer;
        padding: 4px 8px;
    }

    /* Article Header */
    .article-header-section {
        position: relative;
        padding: 70px 0 50px;
        background: linear-gradient(135deg, #4A0007 0%, #1a0a00 50%, #0a0a0a 100%);
        border-bottom: 1px solid var(--border-gold);
        overflow: hidden;
    }

    .article-header-section::before {
        content: '';
        position: absolute;
        top: 0;
        right: 0;
        width: 45%;
        height: 100%;
        background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
        opacity: 0.12;
        mask-image: linear-gradient(to left, rgba(0,0,0,1) 30%, rgba(0,0,0,0) 100%);
        -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,1) 30%, rgba(0,0,0,0) 100%);
    }

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

    .article-category-badge {
        display: inline-block;
        background: rgba(255,215,0,0.12);
        border: 1px solid var(--border-gold);
        color: var(--accent);
        padding: 6px 16px;
        border-radius: 40px;
        font-weight: 700;
        font-size: 0.85rem;
        letter-spacing: 0.5px;
        margin-bottom: 16px;
    }

    .article-header-content h1 {
        font-family: var(--font-heading);
        font-weight: 900;
        font-size: 2.5rem;
        line-height: 1.2;
        margin-bottom: 16px;
        color: var(--text-primary);
    }

    .article-meta {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 18px;
        color: var(--text-muted);
        font-size: 0.9rem;
        border-top: 1px solid var(--border-subtle);
        padding-top: 18px;
        margin-top: 8px;
    }

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

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

    /* Article Body */
    .article-body-section {
        padding: 50px 0 70px;
    }

    .article-layout {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 40px;
        align-items: start;
    }

    .article-main {
        background: var(--bg-card);
        border-radius: var(--radius-lg);
        padding: 36px;
        border: 1px solid var(--border-subtle);
    }

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

    .article-content h2 {
        font-family: var(--font-heading);
        font-weight: 800;
        font-size: 1.6rem;
        margin-top: 32px;
        margin-bottom: 16px;
        color: var(--accent);
        border-left: 4px solid var(--accent);
        padding-left: 16px;
    }

    .article-content h3 {
        font-family: var(--font-heading);
        font-weight: 700;
        font-size: 1.25rem;
        margin-top: 24px;
        margin-bottom: 12px;
        color: var(--text-secondary);
    }

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

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

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

    .article-content blockquote {
        background: rgba(255,215,0,0.05);
        border-left: 3px solid var(--accent);
        padding: 16px 20px;
        margin: 20px 0;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        font-style: italic;
        color: var(--text-muted);
    }

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

    .article-content strong {
        color: var(--accent);
        font-weight: 700;
    }

    .not-found-state {
        text-align: center;
        padding: 60px 20px;
    }

    .not-found-state i {
        font-size: 3rem;
        color: var(--text-muted);
        margin-bottom: 16px;
    }

    .not-found-state h3 {
        color: var(--text-secondary);
        margin-bottom: 12px;
    }

    .not-found-state p {
        color: var(--text-muted);
        margin-bottom: 24px;
    }

    /* Sidebar */
    .article-sidebar {
        display: flex;
        flex-direction: column;
        gap: 24px;
        position: sticky;
        top: 82px;
    }

    .sidebar-card {
        background: var(--bg-card);
        border-radius: var(--radius-lg);
        padding: 24px;
        border: 1px solid var(--border-subtle);
    }

    .sidebar-card h4 {
        font-family: var(--font-heading);
        font-weight: 800;
        font-size: 1.1rem;
        margin-bottom: 16px;
        color: var(--accent);
        border-bottom: 1px solid var(--border-subtle);
        padding-bottom: 12px;
    }

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

    .sidebar-card ul li {
        padding: 10px 0;
        border-bottom: 1px solid var(--border-subtle);
        transition: all var(--transition-fast);
    }

    .sidebar-card ul li:last-child {
        border-bottom: none;
    }

    .sidebar-card ul li a {
        display: flex;
        align-items: center;
        gap: 10px;
        color: var(--text-muted);
        font-size: 0.95rem;
        transition: all var(--transition-fast);
    }

    .sidebar-card ul li a:hover {
        color: var(--accent);
        transform: translateX(4px);
    }

    .sidebar-card ul li a i {
        color: var(--accent);
        font-size: 0.8rem;
    }

    .sidebar-cta {
        background: linear-gradient(135deg, rgba(139,0,0,0.4), rgba(255,215,0,0.1));
        border: 1px solid var(--border-gold);
    }

    .sidebar-cta p {
        color: var(--text-muted);
        font-size: 0.95rem;
        margin-bottom: 16px;
    }

    .btn-sidebar-cta {
        background: linear-gradient(135deg, var(--accent), var(--accent-warm));
        border: none;
        color: #1a0a00;
        padding: 12px 24px;
        border-radius: var(--radius-sm);
        font-weight: 800;
        font-size: 0.95rem;
        cursor: pointer;
        width: 100%;
        box-shadow: var(--shadow-gold);
        transition: all var(--transition-smooth);
    }

    .btn-sidebar-cta:hover {
        box-shadow: var(--shadow-glow);
        transform: translateY(-1px);
    }

    /* Related Articles */
    .related-section {
        padding: 50px 0 70px;
        background: var(--bg-card);
        border-top: 1px solid var(--border-subtle);
    }

    .related-section h2 {
        font-family: var(--font-heading);
        font-weight: 900;
        font-size: 1.8rem;
        margin-bottom: 32px;
        color: var(--text-primary);
        text-align: center;
    }

    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .related-card {
        background: var(--bg-elevated);
        border-radius: var(--radius-md);
        overflow: hidden;
        border: 1px solid var(--border-subtle);
        transition: all var(--transition-smooth);
    }

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

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

    .related-card-body {
        padding: 16px;
    }

    .related-card-body h5 {
        font-weight: 700;
        font-size: 1rem;
        margin-bottom: 8px;
        color: var(--text-primary);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .related-card-body p {
        font-size: 0.85rem;
        color: var(--text-muted);
        margin-bottom: 0;
    }

    /* CTA Section */
    .cta-section {
        padding: 70px 0;
        background: linear-gradient(135deg, #4A0007 0%, #1a0a00 100%);
        text-align: center;
        border-top: 1px solid var(--border-gold);
    }

    .cta-section h2 {
        font-family: var(--font-heading);
        font-weight: 900;
        font-size: 2rem;
        margin-bottom: 12px;
        color: var(--text-primary);
    }

    .cta-section p {
        color: var(--text-muted);
        font-size: 1.05rem;
        max-width: 600px;
        margin: 0 auto 24px;
    }

    .btn-cta-large {
        background: linear-gradient(135deg, var(--accent), var(--accent-warm));
        border: none;
        color: #1a0a00;
        padding: 16px 36px;
        border-radius: var(--radius-md);
        font-weight: 900;
        font-size: 1.1rem;
        cursor: pointer;
        box-shadow: var(--shadow-gold);
        transition: all var(--transition-smooth);
    }

    .btn-cta-large:hover {
        box-shadow: var(--shadow-glow);
        transform: translateY(-2px);
    }

    /* Footer */
    .footer-custom {
        background: var(--bg-card);
        border-top: 1px solid var(--border-gold);
        padding: 50px 0 24px;
        color: var(--text-muted);
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 32px;
    }

    .footer-col h5 {
        font-family: var(--font-heading);
        font-weight: 800;
        font-size: 1rem;
        color: var(--accent);
        margin-bottom: 16px;
    }

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

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

    .footer-col ul li a {
        color: var(--text-muted);
        font-size: 0.9rem;
        transition: color var(--transition-fast);
    }

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

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

    /* FAB */
    .fab-left {
        position: fixed;
        left: 24px;
        bottom: 96px;
        z-index: 1040;
        width: 52px;
        height: 52px;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--accent), var(--accent-warm));
        border: 2px solid var(--accent);
        box-shadow: var(--shadow-glow);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all var(--transition-smooth);
        animation: fab-float 3s ease-in-out infinite;
    }

    .fab-left i {
        color: #1a0a00;
        font-size: 1.5rem;
    }

    .fab-left:hover {
        transform: scale(1.1);
        box-shadow: 0 0 35px rgba(255,215,0,0.4);
    }

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

    .fab-notification-dot {
        position: absolute;
        top: 4px;
        right: 4px;
        width: 12px;
        height: 12px;
        background: #ff0000;
        border-radius: 50%;
        border: 2px solid #1a0a00;
        animation: dot-blink 1.5s ease-in-out infinite;
    }

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

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

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

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

        .article-header-content h1 {
            font-size: 2rem;
        }

        .nav-links {
            display: none;
            position: absolute;
            top: 62px;
            left: 0;
            width: 100%;
            background: rgba(10,10,10,0.98);
            flex-direction: column;
            padding: 14px 0;
            border-bottom: 1px solid var(--border-gold);
            z-index: 1049;
        }

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

        .nav-links li a {
            padding: 12px 24px;
            width: 100%;
            border-radius: 0;
        }

        .mobile-toggle {
            display: block;
        }

        .navbar-brand-custom {
            font-size: 0.98rem;
        }

        .btn-nav-login,
        .btn-nav-signup {
            font-size: 0.78rem;
            padding: 6px 12px;
        }
    }

    @media (max-width: 768px) {
        .article-header-content h1 {
            font-size: 1.65rem;
        }

        .article-main {
            padding: 20px;
        }

        .article-meta {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }

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

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

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

        .container-custom {
            padding-left: 16px;
            padding-right: 16px;
        }

        .navbar-custom .navbar-inner {
            padding: 8px 16px;
        }
    }

/* roulang page: category1 */
:root {
            --primary: #8B0000;
            --primary-dark: #4A0007;
            --accent: #FFD700;
            --accent-warm: #FF9F00;
            --bg-deep: #0a0a0a;
            --bg-card: #1a1a1a;
            --bg-elevated: #222222;
            --text-primary: #FFFDF9;
            --text-secondary: #FEF08A;
            --text-muted: #b0a080;
            --border-gold: rgba(255,215,0,0.3);
            --border-subtle: rgba(255,255,255,0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
            --shadow-md: 0 6px 20px rgba(0,0,0,0.5);
            --shadow-gold: 0 4px 20px rgba(255,215,0,0.15);
            --shadow-glow: 0 0 25px rgba(255,215,0,0.25);
            --font-heading: 'Segoe UI', 'Noto Sans', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Noto Sans', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        html {scroll-behavior:smooth; font-size:16px;}
        body {
            font-family:var(--font-body);
            background:var(--bg-deep);
            color:var(--text-primary);
            line-height:1.6;
            -webkit-font-smoothing:antialiased;
            overflow-x:hidden;
            padding-top:62px;
        }
        img {max-width:100%; height:auto; display:block;}
        a {text-decoration:none; color:inherit; transition:color var(--transition-fast);}
        a:hover {color:var(--accent);}
        .container-custom {max-width:1240px; padding-left:20px; padding-right:20px; margin:0 auto;}
        @media (max-width:768px) {.container-custom {padding-left:16px; padding-right:16px;}}

        .navbar-custom {
            position:fixed; top:0; left:0; width:100%; z-index:1050;
            background:rgba(10,10,10,0.92); backdrop-filter:blur(18px);
            border-bottom:1px solid var(--border-gold); min-height:62px; display:flex; align-items:center;
        }
        .navbar-custom .navbar-inner {
            display:flex; align-items:center; justify-content:space-between;
            width:100%; max-width:1240px; margin:0 auto; padding:8px 20px;
        }
        .navbar-brand-custom {
            font-family:var(--font-heading); font-weight:800; font-size:1.2rem;
            letter-spacing:-0.3px;
            background:linear-gradient(180deg, #FFD700 0%, #FF9F00 100%);
            -webkit-background-clip:text; -webkit-text-fill-color:transparent;
            background-clip:text; white-space:nowrap;
        }
        .nav-links {display:flex; align-items:center; gap:4px; list-style:none; margin:0; padding:0;}
        .nav-links li a {
            display:inline-block; padding:10px 15px; border-radius:var(--radius-sm);
            font-weight:600; font-size:0.95rem; color:var(--text-muted);
            transition: all var(--transition-fast); white-space:nowrap;
        }
        .nav-links li a:hover,
        .nav-links li a.active {color:var(--accent); background:rgba(255,215,0,0.08);}
        .nav-actions {display:flex; align-items:center; gap:10px;}
        .btn-nav-login {
            background:transparent; border:1px solid var(--border-gold); color:var(--accent);
            padding:8px 18px; border-radius:var(--radius-sm); font-weight:700; font-size:0.9rem;
            cursor:pointer; transition:all var(--transition-fast); white-space:nowrap;
        }
        .btn-nav-login:hover {background:rgba(255,215,0,0.1); border-color:var(--accent);}
        .btn-nav-signup {
            background:linear-gradient(135deg, var(--accent), var(--accent-warm));
            border:none; color:#1a0a00; padding:9px 20px; border-radius:var(--radius-sm);
            font-weight:800; font-size:0.9rem; cursor:pointer;
            box-shadow:var(--shadow-gold); transition:all var(--transition-fast); white-space:nowrap;
        }
        .btn-nav-signup:hover {box-shadow:var(--shadow-glow); transform:translateY(-1px);}
        .mobile-toggle {
            display:none; background:none; border:none; color:var(--accent);
            font-size:1.6rem; cursor:pointer; padding:4px 8px;
        }
        @media (max-width:992px) {
            .nav-links {display:none; position:absolute; top:62px; left:0; width:100%;
                background:rgba(10,10,10,0.98); flex-direction:column; padding:14px 0;
                border-bottom:1px solid var(--border-gold); z-index:1049;
            }
            .nav-links.show {display:flex;}
            .nav-links li a {padding:12px 24px; width:100%; border-radius:0;}
            .mobile-toggle {display:block;}
            .navbar-brand-custom {font-size:0.98rem;}
            .btn-nav-login, .btn-nav-signup {font-size:0.78rem; padding:6px 12px;}
        }

        .page-banner {
            position:relative; background:linear-gradient(135deg, #1a0a00 0%, #2a1500 50%, #0a0a0a 100%);
            padding:70px 0 40px; overflow:hidden; border-bottom:1px solid var(--border-gold);
        }
        .page-banner::before {
            content:''; position:absolute; top:0; right:0; width:50%; height:100%;
            background:url('/assets/images/coverpic/cover-11.jpg') center/cover no-repeat;
            opacity:0.12; mask-image:linear-gradient(to left, rgba(0,0,0,1) 40%, rgba(0,0,0,0) 100%);
            -webkit-mask-image:linear-gradient(to left, rgba(0,0,0,1) 40%, rgba(0,0,0,0) 100%);
        }
        .page-banner .banner-content {position:relative; z-index:2; max-width:700px;}
        .breadcrumb-custom {display:flex; align-items:center; gap:8px; color:var(--text-muted); font-size:0.85rem; margin-bottom:12px;}
        .breadcrumb-custom a {color:var(--accent); font-weight:600;}
        .breadcrumb-custom .separator {color:var(--border-gold);}
        .page-banner h1 {font-family:var(--font-heading); font-weight:900; font-size:2.4rem; line-height:1.2; margin-bottom:12px;}
        .page-banner h1 .gold {color:var(--accent);}
        .page-banner .banner-desc {font-size:1.05rem; color:var(--text-muted); line-height:1.6; max-width:550px;}

        .section-custom {padding:60px 0;}
        .section-title {font-family:var(--font-heading); font-weight:800; font-size:1.8rem; margin-bottom:10px; color:var(--text-primary);}
        .section-subtitle {color:var(--text-muted); font-size:1rem; margin-bottom:36px; max-width:650px; line-height:1.55;}

        .strategy-card {
            background:var(--bg-card); border:1px solid var(--border-subtle); border-radius:var(--radius-lg);
            padding:28px 24px; height:100%; transition:all var(--transition-smooth);
            position:relative; overflow:hidden;
        }
        .strategy-card::before {
            content:''; position:absolute; top:0; left:0; width:4px; height:40%;
            background:linear-gradient(180deg, var(--accent), var(--accent-warm));
            border-radius:0 0 4px 0;
        }
        .strategy-card:hover {border-color:var(--border-gold); box-shadow:var(--shadow-gold); transform:translateY(-4px);}
        .strategy-icon {
            width:54px; height:54px; border-radius:var(--radius-md); display:flex; align-items:center; justify-content:center;
            background:rgba(255,215,0,0.1); color:var(--accent); font-size:1.6rem; margin-bottom:16px;
        }
        .strategy-card h3 {font-family:var(--font-heading); font-size:1.2rem; font-weight:700; margin-bottom:8px; color:var(--text-primary);}
        .strategy-card p {font-size:0.92rem; color:var(--text-muted); line-height:1.6; margin-bottom:0;}

        .step-flow {display:flex; flex-wrap:wrap; gap:0; position:relative;}
        .step-item {
            flex:1 1 250px; background:var(--bg-card); border:1px solid var(--border-subtle);
            padding:32px 24px; position:relative; border-radius:var(--radius-lg); transition:all var(--transition-smooth);
        }
        .step-item:hover {border-color:var(--border-gold); box-shadow:var(--shadow-gold);}
        .step-number {
            width:46px; height:46px; border-radius:50%; background:linear-gradient(135deg, var(--accent), var(--accent-warm));
            color:#1a0a00; font-weight:900; font-size:1.3rem; display:flex; align-items:center; justify-content:center;
            margin-bottom:16px;
        }
        .step-item h3 {font-family:var(--font-heading); font-size:1.15rem; font-weight:700; margin-bottom:8px;}
        .step-item p {font-size:0.9rem; color:var(--text-muted); line-height:1.6; margin-bottom:0;}

        .highlight-stat {
            background:var(--bg-elevated); border:1px solid var(--border-gold); border-radius:var(--radius-lg);
            padding:32px 28px; text-align:center; transition:all var(--transition-smooth);
        }
        .highlight-stat:hover {box-shadow:var(--shadow-glow);}
        .highlight-stat .stat-number {font-family:var(--font-heading); font-size:2.8rem; font-weight:900; color:var(--accent); line-height:1.1;}
        .highlight-stat .stat-label {font-size:0.9rem; color:var(--text-muted); margin-top:6px;}

        .comparison-table-wrap {overflow-x:auto;}
        .comparison-table {width:100%; min-width:700px; border-collapse:separate; border-spacing:0 8px;}
        .comparison-table thead th {
            background:var(--bg-elevated); color:var(--accent); font-weight:700; padding:14px 18px;
            text-align:left; border-radius:var(--radius-sm); font-size:0.9rem;
        }
        .comparison-table tbody tr {background:var(--bg-card); transition:all var(--transition-fast);}
        .comparison-table tbody tr:hover {background:rgba(255,215,0,0.04); box-shadow:var(--shadow-gold);}
        .comparison-table tbody td {padding:14px 18px; font-size:0.9rem; color:var(--text-muted); border-bottom:1px solid var(--border-subtle);}

        .faq-item {border-bottom:1px solid var(--border-subtle); padding:18px 0;}
        .faq-question {
            cursor:pointer; font-weight:700; font-size:1.05rem; display:flex; justify-content:space-between;
            align-items:center; color:var(--text-primary); transition:color var(--transition-fast);
        }
        .faq-question:hover {color:var(--accent);}
        .faq-question .faq-icon {font-size:0.85rem; color:var(--accent); transition:transform var(--transition-fast);}
        .faq-answer {max-height:0; overflow:hidden; transition:max-height 0.35s ease; padding-top:0;}
        .faq-item.open .faq-answer {max-height:300px; padding-top:12px;}
        .faq-item.open .faq-icon {transform:rotate(180deg);}
        .faq-answer p {color:var(--text-muted); font-size:0.92rem; line-height:1.6; margin-bottom:0;}

        .cta-section {
            background:linear-gradient(135deg, #4A0007 0%, #2a0a00 50%, #0a0a0a 100%);
            border:1px solid var(--border-gold); border-radius:var(--radius-xl); padding:48px 36px;
            text-align:center; position:relative; overflow:hidden;
        }
        .cta-section h3 {font-family:var(--font-heading); font-size:1.7rem; font-weight:800; margin-bottom:12px;}
        .cta-section p {color:var(--text-muted); font-size:1rem; margin-bottom:24px; max-width:500px; margin-left:auto; margin-right:auto;}
        .btn-cta-gold {
            background:linear-gradient(135deg, var(--accent), var(--accent-warm));
            border:none; color:#1a0a00; padding:14px 36px; border-radius:var(--radius-md);
            font-weight:800; font-size:1.05rem; cursor:pointer;
            box-shadow:var(--shadow-gold); transition:all var(--transition-smooth);
        }
        .btn-cta-gold:hover {box-shadow:var(--shadow-glow); transform:translateY(-2px);}

        .footer-custom {
            background:#0a0a0a; border-top:2px solid var(--border-gold);
            padding:50px 0 24px; margin-top:20px;
        }
        .footer-custom .footer-grid {display:grid; grid-template-columns:2fr 1fr 1fr; gap:36px; margin-bottom:28px;}
        .footer-custom .footer-col h5 {font-family:var(--font-heading); font-weight:700; font-size:1.1rem; margin-bottom:14px; color:var(--accent);}
        .footer-custom .footer-col ul {list-style:none; padding:0; margin:0;}
        .footer-custom .footer-col ul li {margin-bottom:8px;}
        .footer-custom .footer-col ul li a {color:var(--text-muted); font-size:0.9rem; transition:color var(--transition-fast);}
        .footer-custom .footer-col ul li a:hover {color:var(--accent);}
        .footer-custom .footer-bottom {
            text-align:center; padding-top:20px; border-top:1px solid var(--border-subtle);
            font-size:0.85rem; color:var(--text-muted);
        }
        @media (max-width:768px) {
            .footer-custom .footer-grid {grid-template-columns:1fr; gap:24px;}
            .page-banner h1 {font-size:1.7rem;}
            .section-title {font-size:1.4rem;}
            .cta-section {padding:32px 20px;}
        }
        .fab-custom {
            position:fixed; left:20px; bottom:96px; z-index:1055;
            width:54px; height:54px; border-radius:50%; 
            background:linear-gradient(135deg, #1a0a00, #2a1500);
            border:2px solid var(--border-gold); display:flex; align-items:center; justify-content:center;
            cursor:pointer; box-shadow:var(--shadow-gold); transition:all var(--transition-smooth);
            opacity:0.7; animation:floatFab 3s ease-in-out infinite;
        }
        .fab-custom:hover {opacity:1; box-shadow:var(--shadow-glow); transform:scale(1.1);}
        .fab-custom:active {transform:scale(0.95);}
        .fab-custom .fab-icon {color:var(--accent); font-size:1.5rem;}
        .fab-notification {
            position:absolute; top:-4px; right:-4px; width:14px; height:14px;
            background:#D32F2F; border-radius:50%; border:2px solid #1a0a00;
            animation:blinkDot 1.4s ease-in-out infinite;
        }
        @keyframes floatFab {
            0%,100% {transform:translateY(0);}
            50% {transform:translateY(-8px);}
        }
        @keyframes blinkDot {
            0%,100% {opacity:1;}
            50% {opacity:0.3;}
        }

/* roulang page: category2 */
:root {
            --primary: #8B0000;
            --primary-dark: #4A0007;
            --accent: #FFD700;
            --accent-warm: #FF9F00;
            --bg-deep: #0a0a0a;
            --bg-card: #1a1a1a;
            --bg-elevated: #222222;
            --text-primary: #FFFDF9;
            --text-secondary: #FEF08A;
            --text-muted: #b0a080;
            --border-gold: rgba(255, 215, 0, 0.3);
            --border-subtle: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.5);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.15);
            --shadow-glow: 0 0 25px rgba(255, 215, 0, 0.25);
            --font-heading: 'Segoe UI', 'Noto Sans', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Noto Sans', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-body);
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent);
        }
        .container-custom {
            max-width: 1240px;
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }
        /* Navbar */
        .navbar-custom {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1050;
            background: rgba(10, 10, 10, 0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-gold);
            padding: 0;
            min-height: 62px;
            display: flex;
            align-items: center;
        }
        .navbar-custom .navbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 8px 20px;
        }
        .navbar-brand-custom {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.2rem;
            letter-spacing: -0.3px;
            background: linear-gradient(180deg, #FFD700 0%, #FF9F00 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: inline-block;
            padding: 10px 15px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--accent);
            background: rgba(255, 215, 0, 0.08);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn-nav-login {
            background: transparent;
            border: 1px solid var(--border-gold);
            color: var(--accent);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-nav-login:hover {
            background: rgba(255, 215, 0, 0.1);
            border-color: var(--accent);
        }
        .btn-nav-signup {
            background: linear-gradient(135deg, var(--accent), var(--accent-warm));
            border: none;
            color: #1a0a00;
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 0.9rem;
            cursor: pointer;
            box-shadow: var(--shadow-gold);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-nav-signup:hover {
            box-shadow: var(--shadow-glow);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #4A0007 0%, #1a0a00 50%, #0a0a0a 100%);
            overflow: hidden;
            padding: 120px 0 80px;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.22;
            mask-image: linear-gradient(to left, rgba(0, 0, 0, 1) 30%, rgba(0, 0, 0, 0) 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0, 0, 0, 1) 30%, rgba(0, 0, 0, 0) 100%);
        }
        .hero-section .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255, 215, 0, 0.08) 0%, transparent 70%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 640px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid var(--border-gold);
            color: var(--accent);
            padding: 6px 16px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .hero-content h1 {
            font-family: var(--font-heading);
            font-weight: 900;
            font-size: 3rem;
            line-height: 1.15;
            margin-bottom: 18px;
            color: var(--text-primary);
        }
        .hero-content h1 .gold {
            color: var(--accent);
        }
        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 28px;
            max-width: 530px;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }
        .btn-hero-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-warm));
            border: none;
            color: #1a0a00;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 800;
            font-size: 1.05rem;
            cursor: pointer;
            box-shadow: var(--shadow-gold);
            transition: all var(--transition-smooth);
        }
        .btn-hero-primary:hover {
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
        }
        .hero-stat-item {
            text-align: left;
        }
        .hero-stat-number {
            font-family: var(--font-heading);
            font-weight: 900;
            font-size: 1.8rem;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* Section Titles */
        .section-title {
            font-family: var(--font-heading);
            font-weight: 900;
            font-size: 2.2rem;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            line-height: 1.6;
            margin-bottom: 40px;
        }
        .section-accent {
            color: var(--accent);
        }

        /* Cards */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-smooth);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .card-custom:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-gold);
            transform: translateY(-3px);
        }
        .card-custom.featured {
            border: 2px solid var(--accent);
            box-shadow: var(--shadow-glow);
        }
        .card-icon {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 16px;
        }
        .card-custom h4 {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .card-custom p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.55;
            margin-bottom: 0;
        }
        .card-tag {
            display: inline-block;
            background: rgba(255, 215, 0, 0.1);
            color: var(--accent);
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .card-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: #D32F2F;
            color: #FFF;
            font-size: 0.7rem;
            font-weight: 800;
            padding: 4px 10px;
            border-radius: 20px;
            letter-spacing: 0.4px;
        }

        /* Comparison Table */
        .compare-table {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }
        .compare-table .table-header {
            background: var(--bg-elevated);
            padding: 16px 20px;
            font-weight: 700;
            color: var(--accent);
            border-bottom: 1px solid var(--border-subtle);
        }
        .compare-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 20px;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-muted);
            transition: background var(--transition-fast);
        }
        .compare-item:last-child {
            border-bottom: none;
        }
        .compare-item:hover {
            background: rgba(255, 215, 0, 0.03);
        }
        .compare-highlight {
            background: rgba(255, 215, 0, 0.06);
            color: var(--text-primary);
            font-weight: 600;
        }
        .compare-check {
            color: #2ECC71;
            font-size: 1.1rem;
        }

        /* Device Grid */
        .device-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 20px;
        }
        .device-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px 16px;
            text-align: center;
            transition: all var(--transition-smooth);
        }
        .device-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-gold);
        }
        .device-item i {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 10px;
            display: block;
        }
        .device-item span {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-primary);
        }

        /* FAQ */
        .accordion-custom .accordion-button {
            background: var(--bg-card);
            color: var(--text-primary);
            font-weight: 700;
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            padding: 18px 22px;
            font-size: 1rem;
            transition: all var(--transition-fast);
            box-shadow: none;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--bg-elevated);
            color: var(--accent);
            border-color: var(--border-gold);
            box-shadow: 0 0 0 transparent;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 2px rgba(255, 215, 0, 0.2);
        }
        .accordion-custom .accordion-body {
            background: var(--bg-deep);
            color: var(--text-muted);
            border: 1px solid var(--border-subtle);
            border-top: none;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            padding: 18px 22px;
            font-size: 0.95rem;
            line-height: 1.65;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #4A0007 0%, #1a0a00 100%);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-xl);
            padding: 50px 40px;
            text-align: left;
            position: relative;
            overflow: hidden;
        }
        .cta-section h3 {
            font-family: var(--font-heading);
            font-weight: 900;
            font-size: 2rem;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .cta-section p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 550px;
            margin-bottom: 24px;
            line-height: 1.6;
        }

        /* Footer */
        .footer-custom {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-gold);
            padding: 50px 0 24px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-col h5 {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1rem;
            color: var(--accent);
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            color: var(--text-muted);
            font-size: 0.82rem;
        }
        .footer-col p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* FAB Left */
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 28px;
            z-index: 1040;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, #FFD700, #FF9F00);
            border: 3px solid #FFD700;
            color: #1a0a00;
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.35);
            transition: all var(--transition-smooth);
            animation: floatGentle 3s ease-in-out infinite;
        }
        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 28px rgba(255, 215, 0, 0.5);
        }
        @keyframes floatGentle {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-6px);
            }
        }

        /* Responsive */
        @media (max-width: 992px) {
            .hero-content h1 {
                font-size: 2.4rem;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat-number {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 62px;
                left: 0;
                width: 100%;
                background: rgba(10, 10, 10, 0.98);
                flex-direction: column;
                padding: 14px 0;
                border-bottom: 1px solid var(--border-gold);
                z-index: 1049;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li a {
                padding: 12px 24px;
                width: 100%;
                border-radius: 0;
            }
            .mobile-toggle {
                display: block;
            }
            .navbar-brand-custom {
                font-size: 0.98rem;
            }
            .btn-nav-login,
            .btn-nav-signup {
                font-size: 0.78rem;
                padding: 6px 12px;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-section {
                min-height: auto;
                padding: 110px 0 50px;
            }
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .device-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .cta-section {
                padding: 30px 20px;
            }
            .cta-section h3 {
                font-size: 1.5rem;
            }
            .compare-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
        }
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .hero-stats {
                flex-direction: column;
                gap: 12px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #8B0000;
            --primary-dark: #4A0007;
            --accent: #FFD700;
            --accent-warm: #FF9F00;
            --bg-deep: #0a0a0a;
            --bg-card: #1a1a1a;
            --bg-elevated: #222222;
            --text-primary: #FFFDF9;
            --text-secondary: #FEF08A;
            --text-muted: #b0a080;
            --border-gold: rgba(255,215,0,0.3);
            --border-subtle: rgba(255,255,255,0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
            --shadow-md: 0 6px 20px rgba(0,0,0,0.5);
            --shadow-gold: 0 4px 20px rgba(255,215,0,0.15);
            --shadow-glow: 0 0 25px rgba(255,215,0,0.25);
            --font-heading: 'Segoe UI', 'Noto Sans', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Noto Sans', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        
        html {scroll-behavior:smooth; font-size:16px;}
        body {
            font-family:var(--font-body);
            background:var(--bg-deep);
            color:var(--text-primary);
            line-height:1.6;
            -webkit-font-smoothing:antialiased;
            overflow-x:hidden;
        }
        img {max-width:100%; height:auto; display:block;}
        a {text-decoration:none; color:inherit; transition:color var(--transition-fast);}
        a:hover {color:var(--accent);}
        .container-custom {max-width:1240px; padding-left:20px; padding-right:20px; margin:0 auto;}
        
        /* Navbar */
        .navbar-custom {
            position:fixed; top:0; left:0; width:100%; z-index:1050;
            background:rgba(10,10,10,0.92); backdrop-filter:blur(18px);
            border-bottom:1px solid var(--border-gold);
            padding:0; min-height:62px; display:flex; align-items:center;
        }
        .navbar-custom .navbar-inner {
            display:flex; align-items:center; justify-content:space-between;
            width:100%; max-width:1240px; margin:0 auto; padding:8px 20px;
        }
        .navbar-brand-custom {
            font-family:var(--font-heading);
            font-weight:800; font-size:1.2rem; letter-spacing:-0.3px;
            background:linear-gradient(180deg, #FFD700 0%, #FF9F00 100%);
            -webkit-background-clip:text; -webkit-text-fill-color:transparent;
            background-clip:text; white-space:nowrap;
        }
        .nav-links {display:flex; align-items:center; gap:4px; list-style:none; margin:0; padding:0;}
        .nav-links li a {
            display:inline-block; padding:10px 15px; border-radius:var(--radius-sm);
            font-weight:600; font-size:0.95rem; color:var(--text-muted);
            transition: all var(--transition-fast); white-space:nowrap;
        }
        .nav-links li a:hover,
        .nav-links li a.active {color:var(--accent); background:rgba(255,215,0,0.08);}
        .nav-actions {display:flex; align-items:center; gap:10px;}
        .btn-nav-login {
            background:transparent; border:1px solid var(--border-gold); color:var(--accent);
            padding:8px 18px; border-radius:var(--radius-sm); font-weight:700; font-size:0.9rem;
            cursor:pointer; transition:all var(--transition-fast); white-space:nowrap;
        }
        .btn-nav-login:hover {background:rgba(255,215,0,0.1); border-color:var(--accent);}
        .btn-nav-signup {
            background:linear-gradient(135deg, var(--accent), var(--accent-warm));
            border:none; color:#1a0a00; padding:9px 20px; border-radius:var(--radius-sm);
            font-weight:800; font-size:0.9rem; cursor:pointer;
            box-shadow:var(--shadow-gold); transition:all var(--transition-fast); white-space:nowrap;
        }
        .btn-nav-signup:hover {box-shadow:var(--shadow-glow); transform:translateY(-1px);}
        .mobile-toggle {
            display:none; background:none; border:none; color:var(--accent);
            font-size:1.6rem; cursor:pointer; padding:4px 8px;
        }
        
        /* Page Banner */
        .page-banner {
            position:relative; padding:120px 0 60px;
            background:linear-gradient(135deg, #1e0a00 0%, #0a0a0a 100%);
            overflow:hidden;
        }
        .page-banner::before {
            content:''; position:absolute; top:0; right:0; width:50%; height:100%;
            background:url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity:0.15; mask-image:linear-gradient(to left, rgba(0,0,0,1) 20%, rgba(0,0,0,0) 100%);
            -webkit-mask-image:linear-gradient(to left, rgba(0,0,0,1) 20%, rgba(0,0,0,0) 100%);
        }
        .banner-content {position:relative; z-index:2;}
        .banner-badge {
            display:inline-block; background:rgba(255,215,0,0.12);
            border:1px solid var(--border-gold); color:var(--accent);
            padding:6px 16px; border-radius:40px; font-weight:700; font-size:0.85rem;
            letter-spacing:0.5px; margin-bottom:16px;
        }
        .banner-content h1 {
            font-family:var(--font-heading); font-weight:900; font-size:2.8rem;
            line-height:1.2; margin-bottom:16px; color:var(--text-primary);
        }
        .banner-content h1 .gold {color:var(--accent);}
        .banner-desc {
            font-size:1.05rem; color:var(--text-muted); line-height:1.6;
            max-width:600px; margin-bottom:20px;
        }
        
        /* Featured Video Section */
        .featured-video-section {padding:60px 0 40px;}
        .section-label {
            display:inline-block; color:var(--accent); font-weight:700; font-size:0.85rem;
            text-transform:uppercase; letter-spacing:1.5px; margin-bottom:8px;
        }
        .section-title {
            font-family:var(--font-heading); font-weight:800; font-size:2rem;
            color:var(--text-primary); margin-bottom:12px;
        }
        .section-desc {
            color:var(--text-muted); font-size:1rem; line-height:1.6; margin-bottom:30px;
        }
        .featured-player-wrap {
            position:relative; border-radius:var(--radius-lg); overflow:hidden;
            box-shadow:var(--shadow-md); border:1px solid var(--border-gold);
            margin-bottom:30px; background:var(--bg-elevated);
        }
        .featured-thumb {
            position:relative; width:100%; aspect-ratio:16/9; overflow:hidden;
            background:var(--bg-card);
        }
        .featured-thumb img {width:100%; height:100%; object-fit:cover;}
        .featured-thumb .play-btn-overlay {
            position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
            background:rgba(0,0,0,0.4); transition:all var(--transition-smooth);
            cursor:pointer;
        }
        .play-icon-circle {
            width:70px; height:70px; border-radius:50%;
            background:linear-gradient(135deg, var(--accent), var(--accent-warm));
            display:flex; align-items:center; justify-content:center;
            box-shadow:var(--shadow-glow); transition:all var(--transition-smooth);
        }
        .play-icon-circle i {color:#1a0a00; font-size:1.8rem; margin-left:4px;}
        .featured-thumb:hover .play-icon-circle {transform:scale(1.1);}
        .featured-info {
            padding:20px 24px; display:flex; align-items:center;
            justify-content:space-between; flex-wrap:wrap; gap:12px;
        }
        .featured-meta h3 {
            font-family:var(--font-heading); font-weight:700; font-size:1.15rem;
            color:var(--text-primary); margin-bottom:4px;
        }
        .featured-meta span {
            font-size:0.85rem; color:var(--text-muted);
        }
        .featured-tag {
            background:var(--primary); color:var(--accent); font-weight:700;
            padding:6px 14px; border-radius:40px; font-size:0.82rem;
            border:1px solid var(--border-gold);
        }
        
        /* Stats Bar */
        .stats-bar {
            display:flex; gap:16px; flex-wrap:wrap; margin-bottom:40px;
        }
        .stat-item {
            flex:1; min-width:150px; background:var(--bg-card);
            border:1px solid var(--border-subtle); border-radius:var(--radius-md);
            padding:18px 20px; text-align:left;
        }
        .stat-number {
            font-family:var(--font-heading); font-weight:900; font-size:2rem;
            background:linear-gradient(180deg, var(--accent), var(--accent-warm));
            -webkit-background-clip:text; -webkit-text-fill-color:transparent;
            background-clip:text; display:block; line-height:1.2;
        }
        .stat-label {font-size:0.9rem; color:var(--text-muted); margin-top:4px;}
        
        /* Video Grid */
        .video-grid-section {padding:40px 0 60px;}
        .video-grid {display:grid; grid-template-columns:repeat(auto-fill, minmax(280px, 1fr)); gap:24px;}
        .video-card {
            background:var(--bg-card); border-radius:var(--radius-md);
            border:1px solid var(--border-subtle); overflow:hidden;
            transition:all var(--transition-smooth); cursor:pointer;
        }
        .video-card:hover {
            border-color:var(--border-gold); transform:translateY(-4px);
            box-shadow:var(--shadow-gold);
        }
        .video-card-thumb {
            position:relative; aspect-ratio:16/9; overflow:hidden; background:var(--bg-deep);
        }
        .video-card-thumb img {width:100%; height:100%; object-fit:cover;}
        .video-card-thumb .mini-play {
            position:absolute; top:50%; left:50%; transform:translate(-50%,-50%);
            width:46px; height:46px; border-radius:50%;
            background:rgba(255,215,0,0.9); display:flex; align-items:center;
            justify-content:center; color:#1a0a00; font-size:1rem;
            opacity:0; transition:opacity var(--transition-fast);
        }
        .video-card:hover .mini-play {opacity:1;}
        .video-card-duration {
            position:absolute; bottom:8px; right:8px; background:rgba(0,0,0,0.75);
            color:var(--text-primary); font-size:0.75rem; padding:3px 8px;
            border-radius:4px; font-weight:600;
        }
        .video-card-body {padding:16px;}
        .video-card-body h3 {
            font-family:var(--font-heading); font-weight:700; font-size:1rem;
            color:var(--text-primary); margin-bottom:6px; line-height:1.4;
        }
        .video-card-meta {
            display:flex; align-items:center; justify-content:space-between;
            font-size:0.82rem; color:var(--text-muted);
        }
        
        /* Load More */
        .load-more-wrap {text-align:center; padding:20px 0 40px;}
        .btn-load-more {
            background:transparent; border:2px solid var(--border-gold);
            color:var(--accent); padding:12px 32px; border-radius:var(--radius-md);
            font-weight:700; font-size:1rem; cursor:pointer;
            transition:all var(--transition-smooth);
        }
        .btn-load-more:hover {background:rgba(255,215,0,0.1);}
        
        /* Process Steps */
        .how-to-section {padding:60px 0; background:var(--bg-elevated);}
        .steps-grid {display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:20px; margin-top:30px;}
        .step-card {
            background:var(--bg-card); border-radius:var(--radius-md);
            padding:24px; border:1px solid var(--border-subtle);
            transition:all var(--transition-fast); position:relative;
        }
        .step-card:hover {border-color:var(--border-gold);}
        .step-number {
            font-family:var(--font-heading); font-weight:900; font-size:2.5rem;
            color:rgba(255,215,0,0.2); line-height:1; margin-bottom:10px;
        }
        .step-card h4 {
            font-family:var(--font-heading); font-weight:700; font-size:1.05rem;
            color:var(--text-primary); margin-bottom:6px;
        }
        .step-card p {font-size:0.9rem; color:var(--text-muted); line-height:1.5; margin:0;}
        
        /* FAQ */
        .faq-section {padding:60px 0;}
        .faq-grid {display:grid; grid-template-columns:repeat(auto-fit, minmax(400px, 1fr)); gap:16px; margin-top:30px;}
        .faq-item {
            background:var(--bg-card); border-radius:var(--radius-md);
            padding:20px 24px; border:1px solid var(--border-subtle);
            transition:all var(--transition-fast); cursor:default;
        }
        .faq-item:hover {border-color:var(--border-gold);}
        .faq-item h4 {
            font-family:var(--font-heading); font-weight:700; font-size:1rem;
            color:var(--accent); margin-bottom:8px;
        }
        .faq-item p {font-size:0.92rem; color:var(--text-muted); line-height:1.55; margin:0;}
        
        /* CTA Section */
        .cta-section {
            padding:60px 0; background:linear-gradient(135deg, rgba(139,0,0,0.3), rgba(10,10,10,0.9));
            border-top:1px solid var(--border-gold); border-bottom:1px solid var(--border-gold);
            text-align:center;
        }
        .cta-section h2 {
            font-family:var(--font-heading); font-weight:900; font-size:2rem;
            color:var(--text-primary); margin-bottom:12px;
        }
        .cta-section p {color:var(--text-muted); font-size:1rem; max-width:500px; margin:0 auto 24px;}
        .btn-cta-primary {
            display:inline-block; background:linear-gradient(135deg, var(--accent), var(--accent-warm));
            border:none; color:#1a0a00; padding:14px 36px; border-radius:var(--radius-md);
            font-weight:800; font-size:1.05rem; cursor:pointer;
            box-shadow:var(--shadow-gold); transition:all var(--transition-smooth);
        }
        .btn-cta-primary:hover {box-shadow:var(--shadow-glow); transform:translateY(-2px);}
        
        /* Footer */
        .footer-custom {
            background:var(--bg-elevated); border-top:1px solid var(--border-gold);
            padding:48px 0 24px; color:var(--text-muted);
        }
        .footer-grid {
            display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr));
            gap:28px; margin-bottom:28px;
        }
        .footer-col h5 {
            font-family:var(--font-heading); font-weight:700; font-size:1rem;
            color:var(--accent); margin-bottom:12px;
        }
        .footer-col ul {list-style:none; padding:0; margin:0;}
        .footer-col ul li {margin-bottom:8px;}
        .footer-col ul li a {color:var(--text-muted); font-size:0.92rem; transition:color var(--transition-fast);}
        .footer-col ul li a:hover {color:var(--accent);}
        .footer-bottom {
            text-align:center; padding-top:20px; border-top:1px solid var(--border-subtle);
            font-size:0.85rem; color:rgba(255,255,255,0.35);
        }
        
        /* Responsive */
        @media (max-width:1024px) {
            .banner-content h1 {font-size:2.2rem;}
            .section-title {font-size:1.7rem;}
        }
        @media (max-width:768px) {
            .nav-links {display:none; position:absolute; top:62px; left:0; width:100%;
                background:rgba(10,10,10,0.98); flex-direction:column; padding:14px 0;
                border-bottom:1px solid var(--border-gold); z-index:1049;
            }
            .nav-links.show {display:flex;}
            .nav-links li a {padding:12px 24px; width:100%; border-radius:0;}
            .mobile-toggle {display:block;}
            .navbar-brand-custom {font-size:0.98rem;}
            .btn-nav-login, .btn-nav-signup {font-size:0.78rem; padding:6px 12px;}
            .banner-content h1 {font-size:1.8rem;}
            .featured-info {flex-direction:column; align-items:flex-start;}
            .video-grid {grid-template-columns:repeat(auto-fill, minmax(240px, 1fr));}
            .faq-grid {grid-template-columns:1fr;}
            .stats-bar {flex-direction:column;}
        }
        @media (max-width:520px) {
            .banner-content h1 {font-size:1.5rem;}
            .section-title {font-size:1.35rem;}
            .video-grid {grid-template-columns:1fr;}
            .container-custom {padding-left:12px; padding-right:12px;}
        }

/* roulang page: category4 */
:root {
            --primary: #8B0000;
            --primary-dark: #4A0007;
            --accent: #FFD700;
            --accent-warm: #FF9F00;
            --bg-deep: #0a0a0a;
            --bg-card: #1a1a1a;
            --bg-elevated: #222222;
            --text-primary: #FFFDF9;
            --text-secondary: #FEF08A;
            --text-muted: #b0a080;
            --border-gold: rgba(255,215,0,0.3);
            --border-subtle: rgba(255,255,255,0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
            --shadow-md: 0 6px 20px rgba(0,0,0,0.5);
            --shadow-gold: 0 4px 20px rgba(255,215,0,0.15);
            --shadow-glow: 0 0 25px rgba(255,215,0,0.25);
            --font-heading: 'Segoe UI', 'Noto Sans', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Noto Sans', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        html {scroll-behavior:smooth; font-size:16px;}
        body {
            font-family:var(--font-body);
            background:var(--bg-deep);
            color:var(--text-primary);
            line-height:1.6;
            -webkit-font-smoothing:antialiased;
            overflow-x:hidden;
        }
        img {max-width:100%; height:auto; display:block;}
        a {text-decoration:none; color:inherit; transition:color var(--transition-fast);}
        a:hover {color:var(--accent);}
        .container-custom {max-width:1240px; padding-left:20px; padding-right:20px; margin:0 auto;}
        @media (max-width:768px) {.container-custom {padding-left:16px; padding-right:16px;}}

        /* Navbar */
        .navbar-custom {
            position:fixed; top:0; left:0; width:100%; z-index:1050;
            background:rgba(10,10,10,0.92); backdrop-filter:blur(18px);
            border-bottom:1px solid var(--border-gold);
            padding:0; min-height:62px; display:flex; align-items:center;
        }
        .navbar-custom .navbar-inner {
            display:flex; align-items:center; justify-content:space-between;
            width:100%; max-width:1240px; margin:0 auto; padding:8px 20px;
        }
        .navbar-brand-custom {
            font-family:var(--font-heading);
            font-weight:800; font-size:1.2rem; letter-spacing:-0.3px;
            background:linear-gradient(180deg, #FFD700 0%, #FF9F00 100%);
            -webkit-background-clip:text; -webkit-text-fill-color:transparent;
            background-clip:text; white-space:nowrap;
        }
        .nav-links {display:flex; align-items:center; gap:4px; list-style:none; margin:0; padding:0;}
        .nav-links li a {
            display:inline-block; padding:10px 15px; border-radius:var(--radius-sm);
            font-weight:600; font-size:0.95rem; color:var(--text-muted);
            transition: all var(--transition-fast); white-space:nowrap;
        }
        .nav-links li a:hover,
        .nav-links li a.active {color:var(--accent); background:rgba(255,215,0,0.08);}
        .nav-actions {display:flex; align-items:center; gap:10px;}
        .btn-nav-login {
            background:transparent; border:1px solid var(--border-gold); color:var(--accent);
            padding:8px 18px; border-radius:var(--radius-sm); font-weight:700; font-size:0.9rem;
            cursor:pointer; transition:all var(--transition-fast); white-space:nowrap;
        }
        .btn-nav-login:hover {background:rgba(255,215,0,0.1); border-color:var(--accent);}
        .btn-nav-signup {
            background:linear-gradient(135deg, var(--accent), var(--accent-warm));
            border:none; color:#1a0a00; padding:9px 20px; border-radius:var(--radius-sm);
            font-weight:800; font-size:0.9rem; cursor:pointer;
            box-shadow:var(--shadow-gold); transition:all var(--transition-fast); white-space:nowrap;
        }
        .btn-nav-signup:hover {box-shadow:var(--shadow-glow); transform:translateY(-1px);}
        .mobile-toggle {
            display:none; background:none; border:none; color:var(--accent);
            font-size:1.6rem; cursor:pointer; padding:4px 8px;
        }
        @media (max-width:992px) {
            .nav-links {display:none; position:absolute; top:62px; left:0; width:100%;
                background:rgba(10,10,10,0.98); flex-direction:column; padding:14px 0;
                border-bottom:1px solid var(--border-gold); z-index:1049;
            }
            .nav-links.show {display:flex;}
            .nav-links li a {padding:12px 24px; width:100%; border-radius:0;}
            .mobile-toggle {display:block;}
            .navbar-brand-custom {font-size:0.98rem;}
            .btn-nav-login, .btn-nav-signup {font-size:0.78rem; padding:6px 12px;}
        }

        /* Hero */
        .hero-section {
            position:relative; min-height:70vh; display:flex; align-items:center;
            background:linear-gradient(135deg, #4A0007 0%, #1a0a00 50%, #0a0a0a 100%);
            overflow:hidden; padding:100px 0 60px;
        }
        .hero-section::before {
            content:''; position:absolute; top:0; right:0; width:55%; height:100%;
            background:url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity:0.15; mask-image:linear-gradient(to left, rgba(0,0,0,1) 30%, rgba(0,0,0,0) 100%);
            -webkit-mask-image:linear-gradient(to left, rgba(0,0,0,1) 30%, rgba(0,0,0,0) 100%);
        }
        .hero-section .hero-overlay {
            position:absolute; inset:0;
            background:radial-gradient(ellipse at 30% 50%, rgba(255,215,0,0.06) 0%, transparent 70%);
        }
        .hero-content {position:relative; z-index:2; max-width:640px;}
        .hero-badge {
            display:inline-block; background:rgba(255,215,0,0.12);
            border:1px solid var(--border-gold); color:var(--accent);
            padding:6px 16px; border-radius:40px; font-weight:700; font-size:0.85rem;
            letter-spacing:0.5px; margin-bottom:16px;
        }
        .hero-content h1 {
            font-family:var(--font-heading); font-weight:900; font-size:3rem;
            line-height:1.15; margin-bottom:18px; color:var(--text-primary);
        }
        .hero-content h1 .gold {color:var(--accent);}
        .hero-desc {
            font-size:1.1rem; color:var(--text-muted); line-height:1.65; margin-bottom:28px;
            max-width:530px;
        }
        .hero-cta-group {display:flex; flex-wrap:wrap; gap:14px; margin-bottom:28px;}
        .btn-hero-primary {
            background:linear-gradient(135deg, var(--accent), var(--accent-warm));
            border:none; color:#1a0a00; padding:14px 32px; border-radius:var(--radius-md);
            font-weight:800; font-size:1.05rem; cursor:pointer;
            box-shadow:var(--shadow-gold); transition:all var(--transition-smooth);
        }
        .btn-hero-primary:hover {box-shadow:var(--shadow-glow); transform:translateY(-2px);}
        .btn-hero-outline {
            background:transparent; border:2px solid var(--border-gold); color:var(--accent);
            padding:13px 30px; border-radius:var(--radius-md);
            font-weight:800; font-size:1.05rem; cursor:pointer; transition:all var(--transition-smooth);
        }
        .btn-hero-outline:hover {background:rgba(255,215,0,0.08); border-color:var(--accent);}
        .hero-stats {display:flex; gap:28px; flex-wrap:wrap;}
        .hero-stat-item {text-align:left;}
        .hero-stat-number {font-size:2rem; font-weight:900; color:var(--accent); line-height:1;}
        .hero-stat-label {font-size:0.85rem; color:var(--text-muted); margin-top:4px;}
        @media (max-width:768px) {
            .hero-section {min-height:auto; padding:90px 0 50px;}
            .hero-content h1 {font-size:2rem;}
            .hero-desc {font-size:0.95rem;}
            .hero-stat-number {font-size:1.5rem;}
        }

        /* Sections */
        .section-padding {padding:70px 0;}
        @media (max-width:768px) {.section-padding {padding:45px 0;}}

        .section-title {
            font-family:var(--font-heading); font-weight:900; font-size:2.2rem;
            color:var(--text-primary); margin-bottom:12px;
        }
        .section-title .gold {color:var(--accent);}
        .section-subtitle {font-size:1.05rem; color:var(--text-muted); max-width:680px;}

        /* Strategy Cards */
        .strategy-grid {display:grid; grid-template-columns:repeat(2,1fr); gap:24px; margin-top:24px;}
        .strategy-card {
            background:var(--bg-card); border:1px solid var(--border-subtle);
            border-radius:var(--radius-lg); padding:28px;
            transition:all var(--transition-smooth); position:relative; overflow:hidden;
        }
        .strategy-card:hover {border-color:var(--border-gold); box-shadow:var(--shadow-gold);}
        .strategy-card .card-number {
            font-family:var(--font-heading); font-size:3.5rem; font-weight:900;
            color:rgba(255,215,0,0.08); position:absolute; top:10px; right:20px; line-height:1;
        }
        .strategy-card .card-icon {
            width:50px; height:50px; background:rgba(255,215,0,0.12);
            border-radius:var(--radius-sm); display:flex; align-items:center; justify-content:center;
            font-size:1.4rem; color:var(--accent); margin-bottom:16px;
        }
        .strategy-card h3 {font-size:1.25rem; font-weight:800; margin-bottom:10px; color:var(--text-primary);}
        .strategy-card p {font-size:0.95rem; color:var(--text-muted); line-height:1.65; margin-bottom:0;}
        @media (max-width:768px) {.strategy-grid {grid-template-columns:1fr;}}

        /* Tips List */
        .tips-list {list-style:none; padding:0; margin-top:20px;}
        .tips-list li {
            display:flex; align-items:flex-start; gap:14px; padding:16px 0;
            border-bottom:1px solid var(--border-subtle);
        }
        .tips-list li:last-child {border-bottom:none;}
        .tips-list .tip-icon {
            width:36px; height:36px; min-width:36px; background:var(--accent);
            border-radius:50%; display:flex; align-items:center; justify-content:center;
            font-weight:800; font-size:0.9rem; color:#1a0a00;
        }
        .tips-list .tip-content h4 {font-size:1rem; font-weight:700; margin-bottom:4px; color:var(--text-primary);}
        .tips-list .tip-content p {font-size:0.9rem; color:var(--text-muted); margin-bottom:0;}

        /* Comparison Table */
        .comparison-table-wrap {overflow-x:auto; margin-top:24px;}
        .comparison-table {
            width:100%; border-collapse:collapse; min-width:600px;
            background:var(--bg-card); border-radius:var(--radius-lg); overflow:hidden;
        }
        .comparison-table th, .comparison-table td {
            padding:14px 18px; text-align:left; border-bottom:1px solid var(--border-subtle);
        }
        .comparison-table th {
            background:rgba(255,215,0,0.08); font-weight:800; color:var(--accent);
            font-size:0.9rem; text-transform:uppercase; letter-spacing:0.5px;
        }
        .comparison-table td {font-size:0.9rem; color:var(--text-muted);}
        .comparison-table tr:last-child td {border-bottom:none;}
        .comparison-table .highlight-row td {color:var(--text-secondary); font-weight:700;}

        /* FAQ */
        .faq-item {
            background:var(--bg-card); border:1px solid var(--border-subtle);
            border-radius:var(--radius-md); margin-bottom:12px; overflow:hidden;
            transition:all var(--transition-fast);
        }
        .faq-item:hover {border-color:var(--border-gold);}
        .faq-question {
            width:100%; text-align:left; background:none; border:none; padding:18px 22px;
            font-weight:700; font-size:1rem; color:var(--text-primary); cursor:pointer;
            display:flex; justify-content:space-between; align-items:center;
            transition:color var(--transition-fast);
        }
        .faq-question:hover {color:var(--accent);}
        .faq-question i {transition:transform var(--transition-smooth); color:var(--accent);}
        .faq-question[aria-expanded="true"] i {transform:rotate(180deg);}
        .faq-answer {
            padding:0 22px 18px; font-size:0.95rem; color:var(--text-muted);
            line-height:1.7; display:none;
        }
        .faq-answer.show {display:block;}

        /* CTA */
        .cta-section {
            background:linear-gradient(135deg, var(--primary-dark), #1a0a00);
            border:1px solid var(--border-gold); border-radius:var(--radius-xl);
            padding:50px 40px; text-align:left; position:relative; overflow:hidden;
        }
        .cta-section::after {
            content:''; position:absolute; top:-30px; right:-30px;
            width:180px; height:180px; background:rgba(255,215,0,0.06);
            border-radius:50%;
        }
        .cta-section h2 {font-size:2rem; font-weight:900; margin-bottom:12px; color:var(--text-primary);}
        .cta-section p {font-size:1rem; color:var(--text-muted); margin-bottom:24px; max-width:580px;}
        .btn-cta {
            background:linear-gradient(135deg, var(--accent), var(--accent-warm));
            border:none; color:#1a0a00; padding:14px 36px; border-radius:var(--radius-md);
            font-weight:800; font-size:1.05rem; cursor:pointer;
            box-shadow:var(--shadow-gold); transition:all var(--transition-smooth);
        }
        .btn-cta:hover {box-shadow:var(--shadow-glow); transform:translateY(-2px);}

        /* Footer */
        .footer-custom {
            background:var(--bg-elevated); border-top:1px solid var(--border-gold);
            padding:50px 0 28px; margin-top:0;
        }
        .footer-grid {display:grid; grid-template-columns:2fr 1fr 1fr; gap:40px; margin-bottom:28px;}
        .footer-col h5 {font-size:1rem; font-weight:800; color:var(--accent); margin-bottom:14px;}
        .footer-col ul {list-style:none; padding:0; margin:0;}
        .footer-col ul li {margin-bottom:8px;}
        .footer-col ul li a {color:var(--text-muted); font-size:0.9rem; transition:color var(--transition-fast);}
        .footer-col ul li a:hover {color:var(--accent);}
        .footer-bottom {
            text-align:center; padding-top:20px; border-top:1px solid var(--border-subtle);
            font-size:0.85rem; color:var(--text-muted);
        }
        @media (max-width:768px) {
            .footer-grid {grid-template-columns:1fr; gap:24px;}
            .cta-section {padding:36px 24px;}
            .cta-section h2 {font-size:1.5rem;}
        }

        /* FAB */
        .fab-left {
            position:fixed; left:16px; bottom:96px; z-index:50;
            width:52px; height:52px; border-radius:50%;
            background:linear-gradient(135deg, var(--accent), var(--accent-warm));
            border:2px solid var(--accent); box-shadow:var(--shadow-gold);
            display:flex; align-items:center; justify-content:center;
            cursor:pointer; font-size:1.3rem; color:#1a0a00;
            transition:all var(--transition-smooth); opacity:0.7;
            animation: floatFab 3s ease-in-out infinite;
        }
        .fab-left:hover {opacity:1; transform:scale(1.1); box-shadow:var(--shadow-glow);}
        @keyframes floatFab {0%,100% {transform:translateY(0);} 50% {transform:translateY(-6px);}}
        .fab-left .notification-dot {
            position:absolute; top:4px; right:4px; width:10px; height:10px;
            background:#D32F2F; border-radius:50%; animation: blinkDot 1.4s ease-in-out infinite;
        }
        @keyframes blinkDot {0%,100% {opacity:1;} 50% {opacity:0.3;}}
        @media (max-width:768px) {.fab-left {width:46px; height:46px; left:12px; bottom:80px; font-size:1.1rem;}}