/* roulang page: index */
:root{
  --bg-deep:#0A2E1C;
  --bg-mid:#123E25;
  --bg-soft:#1A4D30;
  --gold:#FFD700;
  --gold-dim:#C9A227;
  --red:#D32F2F;
  --text:#FFFFFF;
  --text-mint:#D1F2EB;
  --text-muted:#8FBCA8;
  --border:rgba(255,215,0,.25);
  --radius:14px;
  --radius-sm:10px;
  --shadow-gold:0 4px 20px rgba(255,215,0,.18);
  --shadow-card:0 10px 30px rgba(0,0,0,.35);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Be Vietnam Pro",system-ui,sans-serif;
  background:var(--bg-deep);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input{font-family:inherit}
input:focus,button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
::selection{background:var(--gold);color:var(--bg-deep)}

/* ============ HEADER: brand row + channel row ============ */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;background:rgba(10,46,28,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.brand-row{display:flex;align-items:center;justify-content:space-between;gap:16px;height:62px}
.brand-logo{display:flex;align-items:center;gap:10px;min-width:0}
.brand-logo .logo-chip{width:38px;height:38px;flex:none;border-radius:50%;background:radial-gradient(circle at 35% 30%,#FFE873,var(--gold) 55%,#9C7A00);display:flex;align-items:center;justify-content:center;font-weight:800;color:#0A2E1C;font-size:15px;box-shadow:var(--shadow-gold)}
.brand-logo .logo-text{font-weight:800;font-size:17px;line-height:1.2;color:var(--gold);letter-spacing:.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-logo .logo-sub{display:block;font-size:10.5px;font-weight:600;color:var(--text-mint);letter-spacing:.6px}
.auth-box{display:flex;align-items:center;gap:10px;flex:none}
.btn-login{font-size:14px;font-weight:600;color:var(--text-mint);padding:8px 10px;border-radius:8px}
.btn-login:hover{color:var(--gold)}
.btn-signup{font-size:14px;font-weight:700;color:#0A2E1C;background:linear-gradient(135deg,#FFE873,var(--gold));padding:9px 18px;border-radius:999px;box-shadow:var(--shadow-gold);transition:transform .2s ease,box-shadow .2s ease}
.btn-signup:hover{transform:translateY(-1px);box-shadow:0 6px 24px rgba(255,215,0,.35)}
.channel-row{border-top:1px solid rgba(255,215,0,.12)}
.channel-nav{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav a{flex:none;padding:11px 16px;font-size:14px;font-weight:600;color:var(--text-mint);border-bottom:2px solid transparent;transition:color .2s,border-color .2s;white-space:nowrap}
.channel-nav a:hover{color:var(--gold)}
.channel-nav a.active{color:var(--gold);border-bottom-color:var(--gold)}
.header-spacer{height:108px}

/* ============ HERO: cẩm nang + mục lục + form tải ============ */
.hero{position:relative;background:url('/assets/images/backpic/back-1.jpg') center/cover no-repeat}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,46,28,.92) 0%,rgba(10,46,28,.82) 45%,var(--bg-deep) 100%)}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:44px;align-items:center;padding:56px 0 64px}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.8px;color:var(--gold);background:rgba(255,215,0,.1);border:1px solid var(--border);border-radius:999px;padding:6px 14px;text-transform:uppercase}
.hero h1{font-size:clamp(26px,3.6vw,40px);line-height:1.25;font-weight:800;margin:18px 0 14px}
.hero h1 .gold{color:var(--gold)}
.hero-desc{font-size:16px;color:var(--text-mint);max-width:560px;margin:0 0 22px}
.hero-toc{border-left:3px solid var(--gold);padding:4px 0 4px 18px;margin:0 0 26px;display:grid;gap:9px}
.hero-toc li{list-style:none;font-size:14.5px;color:var(--text-mint);display:flex;gap:10px;align-items:baseline}
.hero-toc li b{color:var(--gold);font-weight:800;font-size:13px;flex:none}
.hero-ctas{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.btn-primary{display:inline-flex;align-items:center;gap:9px;background:linear-gradient(135deg,#FFE873,var(--gold));color:#0A2E1C;font-weight:800;font-size:15px;padding:14px 26px;border-radius:12px;box-shadow:var(--shadow-gold);transition:transform .2s,box-shadow .2s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(255,215,0,.4)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-outline{display:inline-flex;align-items:center;gap:8px;border:1.5px solid var(--border);color:var(--text-mint);font-weight:700;font-size:15px;padding:13px 24px;border-radius:12px;transition:border-color .2s,color .2s,background .2s}
.btn-outline:hover{border-color:var(--gold);color:var(--gold);background:rgba(255,215,0,.06)}
.hero-cover-wrap{position:relative;max-width:380px;margin-left:auto}
.hero-cover-wrap img{border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow-card)}
.hero-cover-tag{position:absolute;top:14px;left:-10px;background:var(--red);color:#fff;font-size:12px;font-weight:800;letter-spacing:.5px;padding:6px 14px;border-radius:6px;box-shadow:0 4px 14px rgba(211,47,47,.45)}
.hero-cover-note{position:absolute;bottom:-18px;left:18px;right:18px;background:var(--bg-mid);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 16px;font-size:13px;color:var(--text-mint);box-shadow:var(--shadow-card)}
.hero-cover-note strong{color:var(--gold)}

/* ============ Section base ============ */
section{scroll-margin-top:120px}
.sec{padding:64px 0}
.sec-alt{background:var(--bg-mid)}
.sec-head{max-width:640px;margin-bottom:36px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-eyebrow{font-size:12px;font-weight:800;letter-spacing:1.2px;color:var(--gold);text-transform:uppercase;margin:0 0 10px}
.sec-title{font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.3;margin:0 0 12px}
.sec-sub{font-size:15px;color:var(--text-mint);margin:0}

/* ============ Kênh tải ============ */
.channel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.channel-item{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius);padding:26px 24px;transition:transform .25s,box-shadow .25s}
.channel-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-gold)}
.channel-item .ch-icon{width:46px;height:46px;border-radius:12px;background:rgba(255,215,0,.12);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px}
.channel-item h3{font-size:17px;font-weight:800;margin:0 0 8px}
.channel-item p{font-size:14px;color:var(--text-mint);margin:0 0 14px}
.channel-item ul{margin:0;padding:0;display:grid;gap:7px}
.channel-item li{list-style:none;font-size:13.5px;color:var(--text-muted);display:flex;gap:8px}
.channel-item li::before{content:"✓";color:var(--gold);font-weight:800;flex:none}
.tag-hot{display:inline-block;background:var(--red);color:#fff;font-size:10.5px;font-weight:800;padding:3px 9px;border-radius:5px;letter-spacing:.5px;margin-left:8px;vertical-align:middle}

/* ============ Dải số liệu ============ */
.stats-strip{background:linear-gradient(90deg,var(--bg-mid),var(--bg-soft));border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;padding:34px 0}
.stat-item{border-left:2px solid var(--gold);padding-left:18px}
.stat-item .num{font-size:clamp(24px,3vw,34px);font-weight:800;color:var(--gold);line-height:1.1}
.stat-item .lbl{font-size:13px;color:var(--text-mint);margin-top:6px}

/* ============ Bảng hạng thành viên ============ */
.tier-table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-mid)}
table.tier{width:100%;border-collapse:collapse;min-width:640px}
table.tier th,table.tier td{padding:14px 18px;text-align:left;font-size:14px;border-bottom:1px solid rgba(255,215,0,.12)}
table.tier thead th{background:rgba(255,215,0,.08);font-weight:800;color:var(--gold);font-size:13.5px;letter-spacing:.3px}
table.tier tbody tr:last-child td{border-bottom:none}
table.tier td:first-child{color:var(--text-mint);font-weight:600}
table.tier .yes{color:var(--gold);font-weight:700}
table.tier .no{color:var(--text-muted)}
.tier-highlights{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:26px}
.tier-hl{border:1px solid var(--border);border-radius:var(--radius-sm);padding:18px 20px;background:rgba(255,215,0,.04)}
.tier-hl h4{margin:0 0 6px;font-size:15px;font-weight:800;color:var(--gold)}
.tier-hl p{margin:0;font-size:13.5px;color:var(--text-mint)}

/* ============ Top 5 ============ */
.top-list{display:grid;gap:14px;counter-reset:top}
.top-item{display:flex;gap:20px;align-items:center;background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius);padding:18px 22px;transition:transform .2s,box-shadow .2s}
.top-item:hover{transform:translateX(4px);box-shadow:var(--shadow-gold)}
.top-item .rank{counter-increment:top;flex:none;width:44px;height:44px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#FFE873,var(--gold) 60%,#9C7A00);color:#0A2E1C;font-weight:800;font-size:18px;display:flex;align-items:center;justify-content:center}
.top-item .rank::before{content:counter(top)}
.top-item .info{flex:1;min-width:0}
.top-item h3{margin:0 0 4px;font-size:16px;font-weight:800}
.top-item p{margin:0;font-size:13.5px;color:var(--text-mint)}
.top-item .act{flex:none}
.btn-mini{display:inline-block;font-size:13px;font-weight:700;color:#0A2E1C;background:var(--gold);padding:9px 18px;border-radius:999px;transition:transform .2s,box-shadow .2s}
.btn-mini:hover{transform:translateY(-1px);box-shadow:var(--shadow-gold)}

/* ============ Hướng dẫn sử dụng ============ */
.guide-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:start}
.guide-col h3{font-size:16px;font-weight:800;color:var(--gold);margin:0 0 14px;display:flex;align-items:center;gap:10px}
.guide-col h3 .n{width:26px;height:26px;flex:none;border-radius:8px;background:rgba(255,215,0,.14);display:flex;align-items:center;justify-content:center;font-size:13px}
.guide-col ol{margin:0;padding:0;display:grid;gap:12px}
.guide-col ol li{list-style:none;font-size:14px;color:var(--text-mint);padding-left:22px;position:relative}
.guide-col ol li::before{content:"›";position:absolute;left:4px;color:var(--gold);font-weight:800}
.guide-img{border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow-card);margin-top:22px}

/* ============ Form nhận link ============ */
.lead-wrap{background:linear-gradient(135deg,var(--bg-mid),var(--bg-soft));border:1px solid var(--border);border-radius:20px;padding:44px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:40px;align-items:center}
.lead-form{display:grid;gap:14px}
.lead-form input{width:100%;background:rgba(10,46,28,.7);border:1px solid var(--border);border-radius:12px;padding:14px 18px;font-size:14.5px;color:var(--text);transition:border-color .2s}
.lead-form input::placeholder{color:var(--text-muted)}
.lead-form input:focus{border-color:var(--gold);outline:none}
.lead-privacy{font-size:12.5px;color:var(--text-muted);margin:2px 0 0}
.lead-privacy a{color:var(--gold);text-decoration:underline}
.pay-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.pay-badge{font-size:12px;font-weight:700;color:var(--text-mint);border:1px solid var(--border);border-radius:8px;padding:7px 14px;background:rgba(255,215,0,.05);display:inline-flex;align-items:center;gap:7px}
.pay-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--gold)}

/* ============ Tin tức ============ */
.news-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:40px;align-items:start}
.news-list{display:grid;gap:2px}
.news-item{display:flex;gap:16px;align-items:baseline;padding:15px 6px;border-bottom:1px solid rgba(255,215,0,.1);transition:background .2s}
.news-item:hover{background:rgba(255,215,0,.04)}
.news-item .n-cat{flex:none;font-size:11px;font-weight:800;letter-spacing:.5px;color:var(--gold);background:rgba(255,215,0,.1);border-radius:5px;padding:3px 9px;text-transform:uppercase}
.news-item .n-main{flex:1;min-width:0}
.news-item h3{margin:0;font-size:15px;font-weight:600;line-height:1.45}
.news-item h3 a:hover{color:var(--gold)}
.news-item .n-sum{margin:5px 0 0;font-size:13px;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item .n-date{flex:none;font-size:12.5px;color:var(--text-muted);font-variant-numeric:tabular-nums}
.news-empty{padding:34px 20px;border:1px dashed var(--border);border-radius:var(--radius);text-align:center;color:var(--text-muted);font-size:14px}
.news-side{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--bg-soft)}
.news-side img{height:170px;width:100%;object-fit:cover}
.news-side-body{padding:22px}
.news-side-body h3{margin:0 0 8px;font-size:16px;font-weight:800;color:var(--gold)}
.news-side-body p{margin:0 0 16px;font-size:13.5px;color:var(--text-mint)}
.news-side-links{display:grid;gap:10px}
.news-side-links a{font-size:13.5px;font-weight:600;color:var(--text-mint);display:flex;gap:8px;align-items:baseline}
.news-side-links a::before{content:"→";color:var(--gold)}
.news-side-links a:hover{color:var(--gold)}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:800px}
details.faq{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-soft);overflow:hidden;transition:box-shadow .2s}
details.faq[open]{box-shadow:var(--shadow-gold)}
details.faq summary{cursor:pointer;list-style:none;padding:17px 22px;font-size:15px;font-weight:700;display:flex;justify-content:space-between;gap:16px;align-items:center}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";color:var(--gold);font-size:20px;font-weight:800;flex:none;transition:transform .25s}
details.faq[open] summary::after{transform:rotate(45deg)}
details.faq .faq-body{padding:0 22px 18px;font-size:14px;color:var(--text-mint)}

/* ============ Bảo mật & minh bạch ============ */
.privacy-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.privacy-item{padding:22px 0;border-top:2px solid var(--border)}
.privacy-item h3{margin:0 0 8px;font-size:15px;font-weight:800;color:var(--gold)}
.privacy-item p{margin:0;font-size:13.5px;color:var(--text-mint)}

/* ============ Footer ============ */
.site-footer{background:#07才21 0;background:#072114;border-top:1px solid var(--border);padding:52px 0 0}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr);gap:36px;padding-bottom:36px}
.footer-brand .logo-text{font-weight:800;font-size:16px;color:var(--gold)}
.footer-brand p{font-size:13.5px;color:var(--text-muted);margin:12px 0 0;max-width:340px}
.badge-18{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;border:2px solid var(--gold);color:var(--gold);font-weight:800;font-size:13px;margin-top:16px}
.footer-col h4{font-size:13px;font-weight:800;letter-spacing:1px;color:var(--gold);text-transform:uppercase;margin:0 0 14px}
.footer-col ul{margin:0;padding:0;display:grid;gap:9px}
.footer-col li{list-style:none}
.footer-col a{font-size:13.5px;color:var(--text-mint)}
.footer-col a:hover{color:var(--gold)}
.footer-bottom{border-top:1px solid rgba(255,215,0,.12);padding:18px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--text-muted)}

/* ============ FAB ============ */
.fab{position:fixed;left:16px;bottom:96px;z-index:90;width:60px;height:60px;border-radius:50%;background:radial-gradient(circle at 32% 28%,#3a1010,#1c0808 65%);border:3px solid var(--gold);display:flex;align-items:center;justify-content:center;font-size:24px;box-shadow:0 4px 20px rgba(255,215,0,.3);opacity:.72;animation:fabFloat 3.2s ease-in-out infinite;transition:transform .25s,opacity .25s;cursor:pointer}
.fab:hover{opacity:1;transform:scale(1.1)}
.fab:hover .fab-icon{transform:rotate(360deg)}
.fab:active{transform:scale(.95) translateY(2px)}
.fab .fab-icon{display:inline-block;transition:transform .5s ease}
.fab .fab-dot{position:absolute;top:2px;right:2px;width:12px;height:12px;border-radius:50%;background:#E11D2E;border:2px solid #0A2E1C;animation:fabBlink 1.4s infinite}
@keyframes fabFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes fabBlink{0%,100%{opacity:1}50%{opacity:.25}}

/* ============ Responsive ============ */
@media (max-width:1024px){
  .hero-grid{gap:32px}
  .channel-grid,.privacy-grid,.tier-highlights{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .lead-wrap{padding:34px}
  .footer-grid{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr)}
}
@media (max-width:768px){
  .hero-grid{grid-template-columns:1fr;padding:40px 0 56px}
  .hero-cover-wrap{margin:0 auto;max-width:320px}
  .hero-cover-note{position:static;margin-top:14px}
  .news-grid,.guide-grid,.lead-wrap{grid-template-columns:1fr}
  .sec{padding:52px 0}
  .brand-logo .logo-text{font-size:14.5px;max-width:46vw}
  .brand-logo .logo-sub{display:none}
}
@media (max-width:520px){
  .channel-grid,.privacy-grid,.tier-highlights{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .top-item{flex-wrap:wrap}
  .top-item .act{width:100%}
  .top-item .act a{width:100%;text-align:center}
  .btn-signup{padding:8px 13px;font-size:13px}
  .btn-login{padding:8px 4px;font-size:13px}
  .lead-wrap{padding:26px 20px}
  .news-item{flex-wrap:wrap}
  .news-item .n-date{order:3}
  .fab{width:52px;height:52px;bottom:84px}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: article */
:root {
  --primary-dark: #0A2E1C;
  --primary-forest: #123E25;
  --accent-gold: #FFD700;
  --accent-red: #D32F2F;
  --text-white: #FFFFFF;
  --text-mint: #D1F2EB;
  --bg-card: rgba(18, 62, 37, 0.6);
  --border-gold: rgba(255, 215, 0, 0.3);
  --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.15);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-forest) 100%);
  color: var(--text-white);
  line-height: 1.7;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Navigation */
.site-header {
  background: rgba(10, 46, 28, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-gold);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.brand-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  transition: transform 0.2s;
}

.brand-logo:hover {
  transform: translateY(-2px);
}

.logo-chip {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--accent-gold), #FFA500);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.25rem;
  color: var(--primary-dark);
  box-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
  border: 3px solid rgba(255, 255, 255, 0.2);
}

.logo-text {
  display: flex;
  flex-direction: column;
  color: var(--accent-gold);
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1.2;
}

.logo-sub {
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--text-mint);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.auth-box {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.btn-login {
  padding: 0.6rem 1.25rem;
  color: var(--text-white);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

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

.btn-signup {
  padding: 0.6rem 1.5rem;
  background: linear-gradient(135deg, var(--accent-gold), #FFA500);
  color: var(--primary-dark);
  text-decoration: none;
  font-weight: 700;
  border-radius: 8px;
  box-shadow: var(--shadow-gold);
  transition: all 0.3s;
}

.btn-signup:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(255, 215, 0, 0.3);
}

.channel-row {
  background: rgba(18, 62, 37, 0.8);
  border-top: 1px solid var(--border-gold);
}

.channel-nav {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem 0;
  overflow-x: auto;
}

.channel-nav a {
  padding: 0.5rem 1.25rem;
  color: var(--text-mint);
  text-decoration: none;
  font-weight: 500;
  border-radius: 6px;
  white-space: nowrap;
  transition: all 0.2s;
  border: 1px solid transparent;
}

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

.channel-nav a.active {
  background: var(--accent-gold);
  color: var(--primary-dark);
  font-weight: 700;
}

/* Article Header */
.article-header {
  padding: 3rem 0 2rem;
  text-align: center;
}

.article-header h1 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent-gold);
  margin-bottom: 1rem;
  line-height: 1.3;
}

.article-meta {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  color: var(--text-mint);
  font-size: 0.95rem;
  margin-top: 1rem;
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.article-meta-item i {
  color: var(--accent-gold);
}

/* Article Body */
.article-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: 2rem 0 4rem;
}

.article-content {
  background: var(--bg-card);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-gold);
  border-radius: 12px;
  padding: 2.5rem;
  box-shadow: var(--shadow-gold);
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 1.5rem 0;
}

.article-content h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent-gold);
  margin: 2rem 0 1rem;
}

.article-content h3 {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-white);
  margin: 1.5rem 0 0.75rem;
}

.article-content p {
  margin-bottom: 1.25rem;
  color: var(--text-mint);
  text-align: left;
}

.article-content ul,
.article-content ol {
  margin: 1rem 0 1.5rem 1.5rem;
  color: var(--text-mint);
}

.article-content li {
  margin-bottom: 0.75rem;
  line-height: 1.7;
}

.article-content a {
  color: var(--accent-gold);
  text-decoration: underline;
  transition: color 0.2s;
}

.article-content a:hover {
  color: #FFA500;
}

.article-content blockquote {
  border-left: 4px solid var(--accent-gold);
  background: rgba(255, 215, 0, 0.05);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--text-white);
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.article-content table th,
.article-content table td {
  border: 1px solid var(--border-gold);
  padding: 0.75rem;
  text-align: left;
}

.article-content table th {
  background: rgba(255, 215, 0, 0.1);
  color: var(--accent-gold);
  font-weight: 600;
}

.not-found {
  text-align: center;
  padding: 4rem 2rem;
}

.not-found h2 {
  font-size: 1.75rem;
  color: var(--accent-gold);
  margin-bottom: 1rem;
}

.not-found p {
  color: var(--text-mint);
  margin-bottom: 2rem;
}

.btn-home {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: linear-gradient(135deg, var(--accent-gold), #FFA500);
  color: var(--primary-dark);
  text-decoration: none;
  font-weight: 700;
  border-radius: 8px;
  box-shadow: var(--shadow-gold);
  transition: all 0.3s;
}

.btn-home:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(255, 215, 0, 0.3);
}

/* FAB */
.fab-container {
  position: fixed;
  left: 1rem;
  bottom: 6rem;
  z-index: 50;
}

.fab-button {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--accent-gold), #FFA500);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(255, 215, 0, 0.4);
  border: 3px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
  color: var(--primary-dark);
  font-size: 1.5rem;
  animation: float 3s ease-in-out infinite;
}

.fab-button:hover {
  transform: scale(1.15) rotate(360deg);
  box-shadow: 0 6px 30px rgba(255, 215, 0, 0.6);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Footer */
.site-footer {
  background: rgba(10, 46, 28, 0.95);
  border-top: 1px solid var(--border-gold);
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}

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

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-brand .logo-text {
  font-size: 1rem;
  color: var(--accent-gold);
}

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

.badge-18 {
  display: inline-block;
  background: var(--accent-red);
  color: white;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.85rem;
  align-self: flex-start;
}

.footer-col h4 {
  color: var(--accent-gold);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

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

.footer-col li {
  margin-bottom: 0.5rem;
}

.footer-col a {
  color: var(--text-mint);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-gold);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-mint);
}

/* Responsive */
@media (max-width: 768px) {
  .brand-row {
    flex-direction: column;
    gap: 1rem;
  }

  .logo-text {
    font-size: 0.95rem;
  }

  .logo-sub {
    font-size: 0.6rem;
  }

  .channel-nav {
    gap: 0.25rem;
  }

  .channel-nav a {
    padding: 0.4rem 0.85rem;
    font-size: 0.9rem;
  }

  .article-header h1 {
    font-size: 1.75rem;
  }

  .article-content {
    padding: 1.5rem;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .fab-container {
    left: 0.75rem;
    bottom: 5rem;
  }

  .fab-button {
    width: 56px;
    height: 56px;
    font-size: 1.25rem;
  }
}

@media (max-width: 520px) {
  .article-header h1 {
    font-size: 1.5rem;
  }

  .article-content {
    padding: 1.25rem;
  }

  .article-content h2 {
    font-size: 1.5rem;
  }

  .article-content h3 {
    font-size: 1.2rem;
  }
}

/* roulang page: category1 */
:root {
  --color-primary: #0A2E1C;
  --color-primary-dark: #062315;
  --color-accent: #FFD700;
  --color-accent-dark: #D4AC0D;
  --color-red: #D32F2F;
  --color-bg: #F8FAF9;
  --color-text: #1A1A1A;
  --color-text-muted: #5A6C64;
  --color-border: #D1F2EB;
  --color-card-bg: #FFFFFF;
  --color-hover: #123E25;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(10,46,28,0.08);
  --shadow-md: 0 4px 12px rgba(10,46,28,0.12);
  --shadow-lg: 0 8px 24px rgba(10,46,28,0.16);
  --shadow-glow: 0 0 20px rgba(255,215,0,0.25);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

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

button, .btn {
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.3s ease;
}

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

/* Header */
.site-header {
  background: var(--color-primary);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-chip {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  color: var(--color-primary);
  box-shadow: var(--shadow-glow);
  border: 2px solid rgba(255,215,0,0.4);
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: #FFFFFF;
  font-weight: 700;
  font-size: 18px;
  line-height: 1.2;
}

.logo-sub {
  font-size: 11px;
  font-weight: 400;
  color: var(--color-border);
  letter-spacing: 0.5px;
}

.auth-box {
  display: flex;
  gap: 12px;
  align-items: center;
}

.btn-login {
  color: #FFFFFF;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
}

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

.btn-signup {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  color: var(--color-primary);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-glow);
}

.btn-signup:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(255,215,0,0.4);
}

.channel-row {
  background: var(--color-primary-dark);
}

.channel-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 12px 0;
  scrollbar-width: none;
}

.channel-nav::-webkit-scrollbar {
  display: none;
}

.channel-nav a {
  padding: 8px 20px;
  color: var(--color-border);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: all 0.3s ease;
}

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

.channel-nav a.active {
  background: var(--color-accent);
  color: var(--color-primary);
  font-weight: 700;
}

/* Hero Banner */
.hero-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-hover) 100%);
  padding: 48px 0;
  position: relative;
  overflow: hidden;
}

.hero-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/images/backpic/back-1.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,215,0,0.2);
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.hero-content h1 {
  font-size: 42px;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero-content p {
  font-size: 18px;
  color: var(--color-border);
  line-height: 1.6;
  margin-bottom: 24px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

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

.stat-number {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-accent);
  display: block;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 14px;
  color: var(--color-border);
}

/* Main Content */
.main-content {
  padding: 64px 0;
}

.content-section {
  margin-bottom: 64px;
}

.section-header {
  margin-bottom: 32px;
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Platform Cards */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.platform-card {
  background: var(--color-card-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

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

.platform-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-hover) 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.platform-card h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.platform-card .version {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.platform-card .features {
  list-style: none;
  margin-bottom: 24px;
}

.platform-card .features li {
  padding: 8px 0;
  color: var(--color-text);
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.platform-card .features li::before {
  content: '✓';
  color: var(--color-accent);
  font-weight: 700;
  font-size: 18px;
}

.btn-download {
  width: 100%;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  color: var(--color-primary);
  padding: 14px 24px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 700;
  text-align: center;
  box-shadow: var(--shadow-glow);
  display: inline-block;
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(255,215,0,0.5);
}

/* Step Guide */
.steps-container {
  display: grid;
  gap: 32px;
}

.step-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 0;
}

.step-number-box {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-hover) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 32px;
}

.step-number {
  width: 80px;
  height: 80px;
  background: var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 12px;
  box-shadow: var(--shadow-glow);
}

.step-icon {
  font-size: 28px;
  color: var(--color-accent);
}

.step-content {
  padding: 32px;
}

.step-content h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.step-content p {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 16px;
}

.step-details {
  background: var(--color-bg);
  padding: 16px;
  border-radius: var(--radius-sm);
  margin-top: 16px;
}

.step-details ul {
  list-style: none;
  display: grid;
  gap: 8px;
}

.step-details li {
  font-size: 14px;
  color: var(--color-text);
  padding-left: 24px;
  position: relative;
}

.step-details li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

/* Requirements Grid */
.requirements-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.requirement-card {
  background: var(--color-card-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.requirement-card h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.requirement-card ul {
  list-style: none;
  display: grid;
  gap: 8px;
}

.requirement-card li {
  font-size: 15px;
  color: var(--color-text);
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.requirement-card .spec-label {
  color: var(--color-text-muted);
  font-size: 14px;
}

.requirement-card .spec-value {
  color: var(--color-primary);
  font-weight: 600;
  margin-left: 8px;
}

/* Troubleshooting */
.troubleshooting-list {
  display: grid;
  gap: 16px;
}

.trouble-item {
  background: var(--color-card-bg);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
}

.trouble-item h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-red);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.trouble-item p {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.6;
}

.solution-box {
  background: #F0F9F4;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-top: 12px;
  border-left: 3px solid var(--color-primary);
}

.solution-box strong {
  color: var(--color-primary);
  font-size: 14px;
  display: block;
  margin-bottom: 4px;
}

.solution-box p {
  font-size: 14px;
  color: var(--color-text);
  margin: 0;
}

/* Video Section */
.video-section {
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.video-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/images/backpic/back-2.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.1;
}

.video-section .content {
  position: relative;
  z-index: 1;
}

.video-section h3 {
  font-size: 28px;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.video-section p {
  font-size: 16px;
  color: var(--color-border);
  margin-bottom: 32px;
}

.video-placeholder {
  background: rgba(0,0,0,0.4);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 64px 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: #FFFFFF;
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.video-placeholder:hover {
  background: rgba(0,0,0,0.6);
  border-color: #FFFFFF;
}

.video-placeholder i {
  font-size: 48px;
  color: var(--color-accent);
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 16px;
  max-width: 900px;
}

.faq-item {
  background: var(--color-card-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.3s ease;
}

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

.faq-question {
  padding: 20px 24px;
  font-size: 17px;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.faq-question i {
  color: var(--color-accent);
  font-size: 20px;
}

.faq-answer {
  padding: 0 24px 20px 24px;
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.6;
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  margin-top: -4px;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-hover) 100%);
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
  margin-top: 64px;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/images/backpic/back-3.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.1;
}

.cta-section .content {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  font-size: 36px;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 18px;
  color: var(--color-border);
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  color: var(--color-primary);
  padding: 16px 40px;
  border-radius: var(--radius-md);
  font-size: 18px;
  font-weight: 700;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 35px rgba(255,215,0,0.5);
}

.btn-secondary {
  background: rgba(255,255,255,0.1);
  border: 2px solid #FFFFFF;
  color: #FFFFFF;
  padding: 14px 38px;
  border-radius: var(--radius-md);
  font-size: 18px;
  font-weight: 700;
}

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

/* Footer */
.site-footer {
  background: var(--color-primary);
  color: var(--color-border);
  padding: 48px 0 24px;
  margin-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 32px;
}

.footer-brand .logo-text {
  font-size: 20px;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-border);
  margin-bottom: 16px;
}

.badge-18 {
  display: inline-block;
  background: var(--color-red);
  color: #FFFFFF;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: grid;
  gap: 10px;
}

.footer-col a {
  font-size: 14px;
  color: var(--color-border);
  transition: all 0.3s ease;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
}

/* FAB */
.fab {
  position: fixed;
  left: 20px;
  bottom: 96px;
  z-index: 90;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--color-primary);
  box-shadow: var(--shadow-glow);
  border: 3px solid var(--color-primary);
  cursor: pointer;
  animation: fabFloat 3s ease-in-out infinite;
  opacity: 0.85;
  transition: all 0.3s ease;
}

.fab:hover {
  opacity: 1;
  transform: scale(1.1) rotate(360deg);
  box-shadow: 0 0 30px rgba(255,215,0,0.5);
}

.fab:active {
  transform: scale(0.95) translateY(2px);
}

.fab-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 20px;
  height: 20px;
  background: var(--color-red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: #FFFFFF;
  font-weight: 700;
  border: 2px solid var(--color-primary);
}

@keyframes fabFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-content h1 {
    font-size: 36px;
  }
  
  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .brand-row {
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
  }
  
  .auth-box {
    width: 100%;
    justify-content: stretch;
  }
  
  .btn-login, .btn-signup {
    flex: 1;
    text-align: center;
  }
  
  .hero-banner {
    padding: 32px 0;
  }
  
  .hero-content h1 {
    font-size: 28px;
  }
  
  .hero-content p {
    font-size: 16px;
  }
  
  .hero-stats {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .platform-grid {
    grid-template-columns: 1fr;
  }
  
  .step-card {
    grid-template-columns: 1fr;
  }
  
  .step-number-box {
    padding: 24px;
  }
  
  .requirements-grid {
    grid-template-columns: 1fr;
  }
  
  .section-title {
    font-size: 26px;
  }
  
  .video-section {
    padding: 32px 20px;
  }
  
  .video-section h3 {
    font-size: 22px;
  }
  
  .cta-section {
    padding: 40px 24px;
  }
  
  .cta-section h2 {
    font-size: 28px;
  }
  
  .cta-section p {
    font-size: 16px;
  }
  
  .cta-buttons {
    flex-direction: column;
  }
  
  .btn-primary, .btn-secondary {
    width: 100%;
    text-align: center;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .fab {
    width: 56px;
    height: 56px;
    font-size: 24px;
    left: 16px;
    bottom: 80px;
  }
}

@media (max-width: 520px) {
  .logo-text {
    font-size: 15px;
  }
  
  .logo-sub {
    font-size: 9px;
  }
  
  .logo-chip {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }
  
  .hero-content h1 {
    font-size: 24px;
  }
  
  .section-title {
    font-size: 22px;
  }
  
  .platform-card {
    padding: 24px;
  }
  
  .step-content {
    padding: 20px;
  }
  
  .cta-section h2 {
    font-size: 24px;
  }
}

/* roulang page: category2 */
:root {
  --color-primary: #0A2E1C;
  --color-primary-dark: #123E25;
  --color-accent-gold: #FFD700;
  --color-accent-red: #D32F2F;
  --color-text-light: #FFFFFF;
  --color-text-pale: #D1F2EB;
  --color-bg-dark: #0B1814;
  --color-border: rgba(255, 215, 0, 0.2);
  --color-card-bg: rgba(18, 62, 37, 0.6);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.15);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.25);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-primary) 100%);
  color: var(--color-text-pale);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--color-accent-gold);
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  color: #FFF59D;
}

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

button, .btn {
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
}

input, textarea {
  font-family: inherit;
}

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

/* Header & Navigation */
.site-header {
  background: linear-gradient(180deg, rgba(10, 46, 28, 0.95) 0%, rgba(18, 62, 37, 0.9) 100%);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.brand-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  gap: var(--spacing-md);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text-light);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-chip {
  background: linear-gradient(135deg, var(--color-accent-gold) 0%, #FFA000 100%);
  color: var(--color-primary);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  font-weight: 900;
  box-shadow: var(--shadow-gold);
  border: 2px solid var(--color-accent-gold);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-sub {
  font-size: 0.625rem;
  font-weight: 400;
  color: var(--color-text-pale);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

.auth-box {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.btn-login {
  color: var(--color-accent-gold);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.5rem 1rem;
}

.btn-login:hover {
  color: var(--color-text-light);
}

.btn-signup {
  background: linear-gradient(135deg, var(--color-accent-gold) 0%, #FFA000 100%);
  color: var(--color-primary);
  font-weight: 700;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-gold);
  font-size: 0.9375rem;
}

.btn-signup:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(255, 215, 0, 0.45);
}

.channel-row {
  background: rgba(18, 62, 37, 0.4);
  border-top: 1px solid var(--color-border);
}

.channel-nav {
  display: flex;
  gap: 0.25rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 0.5rem 0;
}

.channel-nav::-webkit-scrollbar {
  display: none;
}

.channel-nav a {
  color: var(--color-text-pale);
  font-weight: 500;
  font-size: 0.9375rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  white-space: nowrap;
  transition: all 0.3s ease;
}

.channel-nav a:hover {
  background: rgba(255, 215, 0, 0.1);
  color: var(--color-accent-gold);
}

.channel-nav a.active {
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.2) 0%, rgba(255, 160, 0, 0.15) 100%);
  color: var(--color-accent-gold);
  border: 1px solid var(--color-border);
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, rgba(10, 46, 28, 0.8) 0%, rgba(18, 62, 37, 0.6) 100%), 
              url('/assets/images/backpic/back-1.jpg') center/cover;
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 50%, rgba(255, 215, 0, 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.15) 0%, rgba(211, 47, 47, 0.15) 100%);
  border: 1px solid var(--color-accent-gold);
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent-gold);
  margin-bottom: var(--spacing-md);
}

.hero-content h1 {
  font-size: 2.75rem;
  font-weight: 900;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
  text-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

.hero-content p {
  font-size: 1.125rem;
  color: var(--color-text-pale);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

.hero-stat {
  text-align: center;
}

.hero-stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-accent-gold);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.hero-stat-label {
  font-size: 0.875rem;
  color: var(--color-text-pale);
}

/* Review Grid Section */
.review-grid-section {
  padding: var(--spacing-xl) 0;
  background: linear-gradient(180deg, transparent 0%, rgba(18, 62, 37, 0.2) 100%);
}

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

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

.section-header p {
  font-size: 1rem;
  color: var(--color-text-pale);
  max-width: 700px;
  margin: 0 auto;
}

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

.review-card {
  background: var(--color-card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.review-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent-gold) 0%, var(--color-accent-red) 100%);
}

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

.review-card-header {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.review-card-rank {
  background: linear-gradient(135deg, var(--color-accent-gold) 0%, #FFA000 100%);
  color: var(--color-primary);
  font-size: 1.5rem;
  font-weight: 900;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-gold);
}

.review-card-title {
  flex: 1;
}

.review-card-title h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-light);
  margin-bottom: 0.25rem;
}

.review-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.rating-badge {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--color-accent-gold);
  font-size: 0.875rem;
  font-weight: 600;
}

.review-badge {
  background: rgba(255, 215, 0, 0.15);
  color: var(--color-accent-gold);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.review-badge.hot {
  background: rgba(211, 47, 47, 0.2);
  color: var(--color-accent-red);
}

.review-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
}

.review-card-features {
  display: grid;
  gap: 0.625rem;
  margin-bottom: var(--spacing-sm);
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-pale);
}

.feature-item i {
  color: var(--color-accent-gold);
  margin-top: 0.125rem;
  flex-shrink: 0;
}

.review-card-footer {
  display: flex;
  gap: 0.75rem;
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
}

.btn-primary {
  flex: 1;
  background: linear-gradient(135deg, var(--color-accent-gold) 0%, #FFA000 100%);
  color: var(--color-primary);
  font-weight: 700;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-gold);
  text-align: center;
  font-size: 0.9375rem;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(255, 215, 0, 0.45);
}

.btn-secondary {
  flex: 1;
  background: rgba(255, 215, 0, 0.1);
  color: var(--color-accent-gold);
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.9375rem;
}

.btn-secondary:hover {
  background: rgba(255, 215, 0, 0.2);
}

/* Comparison Table Section */
.comparison-section {
  padding: var(--spacing-xl) 0;
  background: rgba(10, 46, 28, 0.3);
}

.comparison-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-top: var(--spacing-md);
}

.comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  min-width: 900px;
}

.comparison-table thead th {
  background: var(--color-card-bg);
  color: var(--color-accent-gold);
  font-weight: 700;
  padding: var(--spacing-sm);
  text-align: left;
  border: 1px solid var(--color-border);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.comparison-table thead th:first-child {
  border-top-left-radius: var(--radius-md);
}

.comparison-table thead th:last-child {
  border-top-right-radius: var(--radius-md);
}

.comparison-table tbody tr {
  transition: background 0.2s ease;
}

.comparison-table tbody tr:hover {
  background: rgba(255, 215, 0, 0.05);
}

.comparison-table tbody td {
  background: rgba(18, 62, 37, 0.4);
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  color: var(--color-text-pale);
  font-size: 0.875rem;
}

.comparison-table tbody tr:last-child td:first-child {
  border-bottom-left-radius: var(--radius-md);
}

.comparison-table tbody tr:last-child td:last-child {
  border-bottom-right-radius: var(--radius-md);
}

.comparison-table .app-name {
  font-weight: 700;
  color: var(--color-text-light);
}

.comparison-table .check-icon {
  color: #4CAF50;
}

.comparison-table .times-icon {
  color: #E57373;
}

/* User Voice Section */
.user-voice-section {
  padding: var(--spacing-xl) 0;
}

.voice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.voice-card {
  background: var(--color-card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  position: relative;
}

.voice-card-quote {
  font-size: 2rem;
  color: var(--color-accent-gold);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
  opacity: 0.3;
}

.voice-card p {
  font-size: 0.9375rem;
  color: var(--color-text-pale);
  line-height: 1.7;
  margin-bottom: var(--spacing-sm);
  font-style: italic;
}

.voice-card-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
}

.voice-card-author strong {
  color: var(--color-text-light);
  font-weight: 600;
}

.voice-card-author span {
  color: var(--color-text-pale);
  font-size: 0.875rem;
}

/* FAQ Section */
.faq-section {
  padding: var(--spacing-xl) 0;
  background: rgba(18, 62, 37, 0.2);
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
  margin-top: var(--spacing-md);
}

.faq-item {
  background: var(--color-card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: var(--spacing-md);
  background: transparent;
  color: var(--color-text-light);
  font-size: 1.0625rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-sm);
}

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

.faq-answer {
  padding: 0 var(--spacing-md) var(--spacing-md);
  color: var(--color-text-pale);
  line-height: 1.7;
  font-size: 0.9375rem;
}

.faq-answer ul {
  margin-top: 0.5rem;
  padding-left: 1.5rem;
}

.faq-answer li {
  margin-bottom: 0.5rem;
}

/* CTA Section */
.cta-section {
  padding: var(--spacing-xl) 0;
  background: linear-gradient(135deg, rgba(211, 47, 47, 0.15) 0%, rgba(255, 215, 0, 0.15) 100%);
  text-align: center;
}

.cta-content {
  max-width: 700px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

.cta-content p {
  font-size: 1.0625rem;
  color: var(--color-text-pale);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.cta-buttons .btn-primary {
  padding: 1rem 2.5rem;
  font-size: 1.0625rem;
}

/* Footer */
.site-footer {
  background: linear-gradient(180deg, rgba(10, 46, 28, 0.95) 0%, rgba(11, 24, 20, 1) 100%);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-brand .logo-text {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-accent-gold);
  margin-bottom: var(--spacing-sm);
  display: block;
}

.footer-brand p {
  color: var(--color-text-pale);
  font-size: 0.875rem;
  line-height: 1.7;
  margin-bottom: var(--spacing-sm);
}

.badge-18 {
  display: inline-block;
  background: var(--color-accent-red);
  color: var(--color-text-light);
  font-weight: 900;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
}

.footer-col h4 {
  color: var(--color-text-light);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

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

.footer-col ul li {
  margin-bottom: 0.5rem;
}

.footer-col ul li a {
  color: var(--color-text-pale);
  font-size: 0.875rem;
  transition: all 0.3s ease;
}

.footer-col ul li a:hover {
  color: var(--color-accent-gold);
  padding-left: 0.25rem;
}

.footer-bottom {
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  font-size: 0.8125rem;
  color: var(--color-text-pale);}

/* FAB */
.fab {
  position: fixed;
  left: 1rem;
  bottom: 6rem;
  z-index: 50;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--color-accent-gold) 0%, #FFA000 100%);
  border: 3px solid rgba(255, 215, 0, 0.4);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
  cursor: pointer;
  transition: all 0.3s ease;
  opacity: 0.7;
  animation: fabFloat 3s ease-in-out infinite;
}

.fab:hover {
  opacity: 1;
  transform: scale(1.1) rotate(360deg);
  box-shadow: 0 6px 28px rgba(255, 215, 0, 0.5);
}

.fab i {
  font-size: 1.75rem;
  color: var(--color-primary);
}

@keyframes fabFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

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

@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2rem;
  }
  
  .hero-content p {
    font-size: 1rem;
  }
  
  .hero-stats {
    gap: var(--spacing-md);
  }
  
  .hero-stat-number {
    font-size: 1.5rem;
  }
  
  .section-header h2 {
    font-size: 1.75rem;
  }
  
  .review-grid {
    grid-template-columns: 1fr;
  }
  
  .cta-content h2 {
    font-size: 1.75rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .brand-logo {
    font-size: 1rem;
  }
  
  .logo-chip {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
  
  .logo-sub {
    font-size: 0.5625rem;
  }
  
  .auth-box {
    gap: 0.5rem;
  }
  
  .btn-login {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
  }
  
  .btn-signup {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
  }
  
  .fab {
    width: 56px;
    height: 56px;
    left: 0.75rem;
    bottom: 5rem;
  }
  
  .fab i {
    font-size: 1.5rem;
  }
}

@media (max-width: 520px) {
  :root {
    --spacing-xl: 2.5rem;
    --spacing-lg: 1.75rem;
  }
  
  .hero-content h1 {
    font-size: 1.625rem;
  }
  
  .section-header h2 {
    font-size: 1.5rem;
  }
  
  .review-card-footer {
    flex-direction: column;
  }
  
  .cta-buttons {
    flex-direction: column;
  }
  
  .cta-buttons .btn-primary {
    width: 100%;
  }
}

/* roulang page: category3 */
:root {
  --primary-bg: #0A2E1C;
  --secondary-bg: #123E25;
  --accent-gold: #FFD700;
  --accent-red: #D32F2F;
  --text-white: #FFFFFF;
  --text-mint: #D1F2EB;
  --border-gold: #FFD700;
  --card-bg: rgba(18, 62, 37, 0.6);
  --hover-lift: translateY(-4px);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
  color: var(--text-white);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

button, .btn {
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-weight: 600;
}

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

/* Header & Navigation */
.site-header {
  background: rgba(10, 46, 28, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--accent-gold);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 20px rgba(255, 215, 0, 0.15);
}

.brand-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  gap: 20px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-chip {
  background: linear-gradient(135deg, var(--accent-gold) 0%, #FFA500 100%);
  color: var(--primary-bg);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 20px;
  border: 3px solid var(--accent-red);
  box-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
}

.logo-text {
  display: flex;
  flex-direction: column;
  font-weight: 700;
  font-size: 18px;
  color: var(--accent-gold);
  line-height: 1.2;
}

.logo-sub {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-mint);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.auth-box {
  display: flex;
  gap: 12px;
  align-items: center;
}

.btn-login {
  color: var(--text-mint);
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}

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

.btn-signup {
  background: linear-gradient(135deg, var(--accent-red) 0%, #B71C1C 100%);
  color: var(--text-white);
  padding: 10px 20px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(211, 47, 47, 0.4);
}

.btn-signup:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(211, 47, 47, 0.6);
}

.channel-row {
  background: rgba(18, 62, 37, 0.8);
  border-top: 1px solid rgba(255, 215, 0, 0.2);
}

.channel-nav {
  display: flex;
  gap: 32px;
  padding: 14px 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.channel-nav::-webkit-scrollbar {
  display: none;
}

.channel-nav a {
  color: var(--text-mint);
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

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

/* Hero Section */
.hero-section {
  background: linear-gradient(rgba(10, 46, 28, 0.85), rgba(18, 62, 37, 0.9)), url('/assets/images/backpic/back-1.jpg') center/cover;
  padding: 60px 0;
  border-bottom: 3px solid var(--accent-gold);
}

.hero-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-content h1 {
  font-size: 42px;
  font-weight: 900;
  color: var(--accent-gold);
  margin-bottom: 20px;
  text-shadow: 0 0 30px rgba(255, 215, 0, 0.5);
  line-height: 1.2;
}

.hero-content .subtitle {
  font-size: 18px;
  color: var(--text-mint);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.stat-card {
  background: rgba(255, 215, 0, 0.1);
  border: 1px solid var(--accent-gold);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
}

.stat-card .number {
  font-size: 32px;
  font-weight: 900;
  color: var(--accent-gold);
  display: block;
  margin-bottom: 8px;
}

.stat-card .label {
  font-size: 14px;
  color: var(--text-mint);
}

/* Filter Section */
.filter-section {
  background: rgba(18, 62, 37, 0.4);
  padding: 32px 0;
  border-bottom: 1px solid rgba(255, 215, 0, 0.2);
}

.filter-tabs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.filter-btn {
  background: rgba(255, 215, 0, 0.1);
  border: 2px solid var(--accent-gold);
  color: var(--accent-gold);
  padding: 10px 24px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 700;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent-gold);
  color: var(--primary-bg);
  transform: translateY(-2px);
}

/* App Review Grid */
.review-section {
  padding: 60px 0;
}

.section-header {
  text-align: left;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 900;
  color: var(--accent-gold);
  margin-bottom: 12px;
}

.section-header p {
  font-size: 16px;
  color: var(--text-mint);
  max-width: 700px;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.app-card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 2px solid rgba(255, 215, 0, 0.3);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}

.app-card:hover {
  transform: var(--hover-lift);
  border-color: var(--accent-gold);
  box-shadow: 0 12px 40px rgba(255, 215, 0, 0.3);
}

.app-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--accent-red);
  color: var(--text-white);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  z-index: 10;
  box-shadow: 0 2px 10px rgba(211, 47, 47, 0.5);
}

.app-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 2px solid var(--accent-gold);
}

.app-content {
  padding: 24px;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}

.app-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--accent-gold);
  margin-bottom: 6px;
}

.app-platform {
  font-size: 13px;
  color: var(--text-mint);
  display: flex;
  gap: 8px;
}

.platform-badge {
  background: rgba(255, 215, 0, 0.15);
  padding: 4px 10px;
  border-radius: 12px;
  font-weight: 600;
}

.app-rating {
  text-align: right;
}

.rating-stars {
  color: var(--accent-gold);
  font-size: 18px;
  margin-bottom: 4px;
}

.rating-count {
  font-size: 12px;
  color: var(--text-mint);
}

.app-features {
  margin: 20px 0;
}

.feature-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 215, 0, 0.1);
}

.feature-label {
  font-size: 14px;
  color: var(--text-mint);
}

.feature-value {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-gold);
}

.app-description {
  font-size: 14px;
  color: var(--text-mint);
  line-height: 1.6;
  margin: 16px 0;
}

.app-pros {
  margin: 16px 0;
}

.pros-list {
  list-style: none;
  padding: 0;
}

.pros-list li {
  font-size: 13px;
  color: var(--text-mint);
  padding: 6px 0;
  padding-left: 24px;
  position: relative;
}

.pros-list li:before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-gold);
  font-weight: 900;
  font-size: 16px;
}

.app-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.btn-download {
  flex: 1;
  background: linear-gradient(135deg, var(--accent-red) 0%, #B71C1C 100%);
  color: var(--text-white);
  padding: 14px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 700;
  text-align: center;
  box-shadow: 0 4px 15px rgba(211, 47, 47, 0.4);
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(211, 47, 47, 0.6);
}

.btn-detail {
  background: rgba(255, 215, 0, 0.15);
  border: 2px solid var(--accent-gold);
  color: var(--accent-gold);
  padding: 14px 24px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 700;
}

.btn-detail:hover {
  background: var(--accent-gold);
  color: var(--primary-bg);
}

/* Comparison Table */
.comparison-section {
  padding: 60px 0;
  background: rgba(18, 62, 37, 0.3);
}

.comparison-table {
  background: var(--card-bg);
  border: 2px solid var(--accent-gold);
  border-radius: 16px;
  overflow: hidden;
  overflow-x: auto;
}

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

.comparison-table th {
  background: rgba(255, 215, 0, 0.2);
  color: var(--accent-gold);
  font-weight: 800;
  padding: 16px;
  text-align: left;
  border-bottom: 2px solid var(--accent-gold);
  font-size: 14px;
}

.comparison-table td {
  padding: 16px;
  border-bottom: 1px solid rgba(255, 215, 0, 0.1);
  color: var(--text-mint);
  font-size: 14px;
}

.comparison-table tr:hover {
  background: rgba(255, 215, 0, 0.05);
}

.app-name-cell {
  font-weight: 700;
  color: var(--accent-gold);
}

.rating-cell {
  color: var(--accent-gold);
  font-weight: 700;
}

/* FAQ Section */
.faq-section {
  padding: 60px 0;
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 20px;
}

.faq-item {
  background: var(--card-bg);
  border: 2px solid rgba(255, 215, 0, 0.3);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition);
}

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

.faq-question {
  padding: 20px 24px;
  font-size: 17px;
  font-weight: 700;
  color: var(--accent-gold);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question i {
  transition: var(--transition);
}

.faq-answer {
  padding: 0 24px 20px 24px;
  color: var(--text-mint);
  line-height: 1.7;
  font-size: 15px;
}

/* CTA Section */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(211, 47, 47, 0.2) 0%, rgba(255, 215, 0, 0.2) 100%);
  border-top: 2px solid var(--accent-gold);
  border-bottom: 2px solid var(--accent-gold);
  text-align: center;
}

.cta-content h2 {
  font-size: 38px;
  font-weight: 900;
  color: var(--accent-gold);
  margin-bottom: 16px;
  text-shadow: 0 0 30px rgba(255, 215, 0, 0.4);
}

.cta-content p {
  font-size: 17px;
  color: var(--text-mint);
  margin-bottom: 32px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-red) 0%, #B71C1C 100%);
  color: var(--text-white);
  padding: 16px 40px;
  border-radius: 30px;
  font-size: 17px;
  font-weight: 700;
  box-shadow: 0 6px 25px rgba(211, 47, 47, 0.5);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(211, 47, 47, 0.7);
}

.btn-secondary {
  background: rgba(255, 215, 0, 0.15);
  border: 2px solid var(--accent-gold);
  color: var(--accent-gold);
  padding: 16px 40px;
  border-radius: 30px;
  font-size: 17px;
  font-weight: 700;
}

.btn-secondary:hover {
  background: var(--accent-gold);
  color: var(--primary-bg);
  transform: translateY(-3px);
}

/* Footer */
.site-footer {
  background: rgba(10, 46, 28, 0.95);
  border-top: 3px solid var(--accent-gold);
  padding: 48px 0 24px 0;
}

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

.footer-brand .logo-text {
  font-size: 20px;
  color: var(--accent-gold);
  margin-bottom: 12px;
  display: block;
}

.footer-brand p {
  color: var(--text-mint);
  line-height: 1.7;
  margin-bottom: 16px;
  font-size: 14px;
}

.badge-18 {
  display: inline-block;
  background: var(--accent-red);
  color: var(--text-white);
  padding: 6px 14px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 14px;
  border: 2px solid var(--accent-gold);
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent-gold);
  margin-bottom: 16px;
}

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

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

.footer-col ul li a {
  color: var(--text-mint);
  font-size: 14px;
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 215, 0, 0.2);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-mint);
}

/* FAB */
.fab-support {
  position: fixed;
  left: 20px;
  bottom: 96px;
  z-index: 50;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--accent-gold) 0%, #FFA500 100%);
  border: 3px solid var(--accent-red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(255, 215, 0, 0.4);
  cursor: pointer;
  transition: var(--transition);
  opacity: 0.8;
  animation: float 3s ease-in-out infinite;
}

.fab-support:hover {
  opacity: 1;
  transform: scale(1.1) rotate(360deg);
  box-shadow: 0 6px 30px rgba(255, 215, 0, 0.6);
}

.fab-support i {
  font-size: 28px;
  color: var(--primary-bg);
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Responsive */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .hero-content h1 {
    font-size: 36px;
  }
}

@media (max-width: 768px) {
  .brand-row {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .auth-box {
    width: 100%;
    justify-content: space-between;
  }
  
  .channel-nav {
    gap: 20px;
  }
  
  .hero-content h1 {
    font-size: 30px;
  }
  
  .hero-content .subtitle {
    font-size: 16px;
  }
  
  .hero-stats {
    grid-template-columns: 1fr 1fr;
  }
  
  .review-grid {
    grid-template-columns: 1fr;
  }
  
  .section-header h2 {
    font-size: 28px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .cta-content h2 {
    font-size: 28px;
  }
  
  .cta-buttons {
    flex-direction: column;
  }
  
  .btn-primary,
  .btn-secondary {
    width: 100%;
  }
  
  .fab-support {
    width: 56px;
    height: 56px;
    left: 16px;
    bottom: 80px;
  }
  
  .fab-support i {
    font-size: 24px;
  }
}

@media (max-width: 520px) {
  .logo-text {
    font-size: 15px;
  }
  
  .logo-sub {
    font-size: 9px;
  }
  
  .hero-content h1 {
    font-size: 24px;
  }
  
  .stat-card .number {
    font-size: 26px;
  }
  
  .comparison-table {
    font-size: 12px;
  }
}