:root{
  --bg:#0b0f1a;
  --bg-alt:#121729;
  --card:#161d33;
  --gold:#f4c430;
  --gold-dark:#c9962a;
  --text:#e7e9f0;
  --text-dim:#9aa1b5;
  --border:#242c47;
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Segoe UI",Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.wrap{padding:60px 0}

/* Header */
header.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(11,15,26,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.logo{font-size:24px;font-weight:800;letter-spacing:.5px;color:var(--gold)}
.logo span{color:var(--text)}
.nav-links{display:flex;gap:28px;list-style:none}
.nav-links a{font-weight:600;font-size:15px;color:var(--text-dim);transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--gold)}
.btn{
  display:inline-block;padding:10px 24px;border-radius:999px;font-weight:700;
  background:linear-gradient(135deg,var(--gold),var(--gold-dark));
  color:#1a1400;transition:.2s;border:none;cursor:pointer;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(244,196,48,.35)}
.btn-outline{background:none;border:1px solid var(--gold);color:var(--gold)}

/* Hero */
.hero{
  padding:80px 0 60px;
  background:radial-gradient(ellipse at top right,rgba(244,196,48,.12),transparent 55%),var(--bg);
  text-align:center;
}
.hero h1{font-size:42px;font-weight:800;margin-bottom:16px}
.hero h1 .accent{color:var(--gold)}
.hero p{font-size:18px;color:var(--text-dim);max-width:640px;margin:0 auto 30px}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.hero-badges{display:flex;gap:24px;justify-content:center;margin-top:40px;flex-wrap:wrap;color:var(--text-dim);font-size:14px}
.hero-badges b{color:var(--gold);font-size:20px;display:block}

/* Sections */
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:30px;font-weight:800}
.section-title p{color:var(--text-dim);margin-top:8px}

.grid{display:grid;gap:22px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}

.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;transition:.2s;
}
.card:hover{border-color:var(--gold-dark);transform:translateY(-4px)}
.card .icon{font-size:32px;margin-bottom:14px}
.card h3{font-size:18px;margin-bottom:8px;color:var(--gold)}
.card p{color:var(--text-dim);font-size:14px}

.game-card{
  background:linear-gradient(180deg,var(--card),var(--bg-alt));
  border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;text-align:center;
}
.game-card .icon{font-size:36px;margin-bottom:10px}
.game-card h3{font-size:16px;margin-bottom:6px}
.game-card p{color:var(--text-dim);font-size:13px}

.steps{counter-reset:step}
.step{position:relative;padding-left:56px;margin-bottom:28px}
.step::before{
  counter-increment:step;content:counter(step);
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;
  background:linear-gradient(135deg,var(--gold),var(--gold-dark));
  color:#1a1400;font-weight:800;display:flex;align-items:center;justify-content:center;
}
.step h3{margin-bottom:6px}
.step p{color:var(--text-dim)}

.faq-item{border-bottom:1px solid var(--border);padding:18px 0}
.faq-item h3{font-size:16px;margin-bottom:8px;color:var(--gold)}
.faq-item p{color:var(--text-dim);font-size:14px}

.cta{
  text-align:center;padding:70px 20px;border-radius:24px;margin:0 20px;
  background:linear-gradient(135deg,rgba(244,196,48,.15),rgba(244,196,48,.03));
  border:1px solid var(--border);
}
.cta h2{font-size:28px;margin-bottom:12px}
.cta p{color:var(--text-dim);margin-bottom:24px}

/* Footer */
footer.site-footer{border-top:1px solid var(--border);background:var(--bg-alt);padding:50px 0 20px;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer-grid h4{color:var(--gold);margin-bottom:14px;font-size:15px}
.footer-grid ul{list-style:none}
.footer-grid li{margin-bottom:10px}
.footer-grid a{color:var(--text-dim);font-size:14px}
.footer-grid a:hover{color:var(--gold)}
.footer-bottom{
  border-top:1px solid var(--border);padding-top:20px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  color:var(--text-dim);font-size:13px;
}
.disclaimer{
  font-size:12px;color:var(--text-dim);max-width:900px;margin:20px auto 0;text-align:center;
  border-top:1px dashed var(--border);padding-top:16px;
}
.age-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:50%;border:2px solid var(--gold);color:var(--gold);
  font-weight:800;font-size:12px;margin-right:6px;vertical-align:middle;
}

/* Inner pages */
.page-hero{padding:50px 0 30px;text-align:center;border-bottom:1px solid var(--border)}
.page-hero h1{font-size:32px;font-weight:800}
.page-hero p{color:var(--text-dim);margin-top:10px}
.breadcrumb{font-size:13px;color:var(--text-dim);margin-bottom:10px}
.breadcrumb a{color:var(--gold)}
.content-box{max-width:860px;margin:0 auto}
.content-box h2{font-size:22px;margin:30px 0 12px;color:var(--gold)}
.content-box h2:first-child{margin-top:0}
.content-box p,.content-box li{color:var(--text-dim);margin-bottom:10px;font-size:15px}
.content-box ul,.content-box ol{padding-left:22px;margin-bottom:16px}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:20px}
.contact-info-list{list-style:none}
.contact-info-list li{
  display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--border);
}
.contact-info-list .icon{font-size:22px}
.contact-info-list b{display:block;margin-bottom:4px}
.contact-info-list span{color:var(--text-dim);font-size:14px}

@media(max-width:900px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .nav-links{display:none}
  .hero h1{font-size:30px}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}

/* ============ Header v2: logo image + auth buttons ============ */
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo img{height:44px;width:auto;display:block}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-actions .btn{padding:9px 20px;font-size:14px;white-space:nowrap}
.nav-toggle{
  display:none;width:42px;height:38px;border:1px solid var(--border);border-radius:10px;
  background:none;cursor:pointer;padding:9px 10px;flex-direction:column;justify-content:space-between;
}
.nav-toggle span{display:block;height:2px;width:100%;background:var(--gold);border-radius:2px;transition:.2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(9px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-9px) rotate(-45deg)}

/* ============ Banner slider ============ */
.banner-slider{position:relative;background:#000;overflow:hidden}
.banner-slider .slides{position:relative;width:100%;aspect-ratio:1600/515}
.banner-slider .slide{
  position:absolute;inset:0;opacity:0;visibility:hidden;
  transition:opacity .6s ease;
}
.banner-slider .slide.is-active{opacity:1;visibility:visible}
.banner-slider .slide img{width:100%;height:100%;object-fit:cover}
.slider-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  width:44px;height:44px;border-radius:50%;border:none;cursor:pointer;
  background:rgba(0,0,0,.4);color:#fff;font-size:22px;line-height:1;
  display:flex;align-items:center;justify-content:center;opacity:.55;transition:.2s;
}
.slider-arrow:hover{opacity:1;background:rgba(244,196,48,.85);color:#1a1400}
.slider-arrow.prev{left:16px}
.slider-arrow.next{right:16px}
.slider-dots{
  position:absolute;left:0;right:0;bottom:14px;z-index:3;
  display:flex;gap:8px;justify-content:center;
}
.slider-dots button{
  width:9px;height:9px;padding:0;border-radius:50%;border:none;cursor:pointer;
  background:rgba(255,255,255,.45);transition:.2s;
}
.slider-dots button.is-active{background:var(--gold);width:24px;border-radius:999px}

@media(max-width:900px){
  .nav-actions .btn{padding:8px 14px;font-size:13px}
  .logo img{height:38px}
}
@media(max-width:640px){
  .banner-slider .slides{aspect-ratio:768/247}
  .slider-arrow{width:34px;height:34px;font-size:18px}
  .slider-arrow.prev{left:8px}
  .slider-arrow.next{right:8px}
  .slider-dots{bottom:8px}

  .nav{flex-wrap:wrap;gap:10px}
  .nav-toggle{display:flex}
  .logo img{height:34px}
  .nav-actions .btn{padding:7px 13px;font-size:12px}
  /* mobile dropdown menu */
  .nav-links{
    display:none;order:3;width:100%;flex-direction:column;gap:0;
    border-top:1px solid var(--border);margin-top:6px;padding-top:6px;
  }
  .nav-links.is-open{display:flex}
  .nav-links li{border-bottom:1px solid var(--border)}
  .nav-links li:last-child{border-bottom:none}
  .nav-links a{display:block;padding:12px 2px;font-size:15px}
}

/* ---- landing keyword pages (2026-09-02) ---- */
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-fig{max-width:860px;margin:0 auto 34px}
.hero-fig img{width:100%;height:auto;display:block;border-radius:var(--radius);border:1px solid var(--border)}
.hero-fig figcaption{margin-top:10px;font-size:13px;color:var(--text-dim);text-align:center}
.prose{margin-bottom:26px}
.prose h2{font-size:24px}
.prose strong{color:var(--text)}
.prose em{color:var(--gold)}
.prose li{margin-bottom:8px}
.table-wrap{overflow-x:auto;margin:16px 0 18px;-webkit-overflow-scrolling:touch}
.data-table{width:100%;border-collapse:collapse;min-width:560px;font-size:14px}
.data-table th,.data-table td{border:1px solid var(--border);padding:10px 12px;text-align:left}
.data-table th{background:var(--bg-alt);color:var(--gold);font-weight:700;white-space:nowrap}
.data-table td{color:var(--text-dim)}
.data-table tr:nth-child(even) td{background:rgba(255,255,255,.02)}
.footer-cta{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  border:1px solid var(--border);border-radius:var(--radius);padding:22px 24px;margin:30px 0 10px;
  background:linear-gradient(135deg,rgba(244,196,48,.10),transparent 65%),var(--card);
}
.footer-cta-text strong{display:block;font-size:18px;margin-bottom:4px}
.footer-cta-text span{color:var(--text-dim);font-size:14px}
.footer-cta-btns{display:flex;gap:12px;flex-wrap:wrap}
.sticky-cta{display:none}
@media(max-width:640px){
  .page-hero h1{font-size:25px;line-height:1.32}
  .prose h2,.content-box h2{font-size:20px}
  .cta h2{font-size:22px}
  .footer-cta{flex-direction:column;align-items:flex-start}
  body{padding-bottom:66px}
  .sticky-cta{
    display:flex;gap:10px;position:fixed;left:0;right:0;bottom:0;z-index:60;
    padding:9px 12px;background:rgba(11,15,26,.96);border-top:1px solid var(--border);
    backdrop-filter:blur(8px);
  }
  .sticky-cta .btn{flex:1;text-align:center;padding:11px 8px;font-size:14px}
}
a.game-card{display:block;color:inherit}
a.game-card:hover{border-color:var(--gold-dark);transform:translateY(-4px)}
a.game-card h3{color:var(--gold)}

/* Icon danh mục game (2026-09-02) */
.game-card .icon.cat-icon{height:48px;margin-bottom:10px;display:flex;align-items:center;justify-content:center}
.game-card .icon.cat-icon img{height:48px;width:auto;object-fit:contain;filter:drop-shadow(0 4px 10px rgba(0,0,0,.45))}

/* Khối khuyến mãi (2026-09-02) */
.promo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.promo-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:.25s;display:flex;flex-direction:column;
}
.promo-card:hover{border-color:var(--gold-dark);transform:translateY(-4px)}
.promo-thumb{position:relative;line-height:0}
.promo-thumb img{width:100%;height:auto;display:block}
.promo-badge{
  position:absolute;top:10px;left:10px;z-index:2;
  background:linear-gradient(135deg,var(--gold),var(--gold-dark));color:#1a1206;
  font-size:11px;font-weight:800;letter-spacing:.6px;padding:3px 10px;border-radius:999px;
}
.promo-body{padding:16px 18px 18px}
.promo-body h3{font-size:16px;color:var(--gold);margin-bottom:6px;line-height:1.4}
.promo-body p{color:var(--text-dim);font-size:14px}
@media(max-width:640px){
  .promo-grid{grid-template-columns:1fr;gap:16px}
  .game-card .icon.cat-icon,.game-card .icon.cat-icon img{height:42px}
}