:root{
  --theme:#8b0810;
  --theme-dark:#5f050b;
  --theme-deep:#350306;
  --theme-light:#fff0f1;
  --theme-soft:#fff7f8;
  --theme-hover:#a70b14;
  --theme-border:rgba(139,8,16,.22);
  --text-main:#2b1517;
  --text-muted:#725052;
  --on-theme:#ffffff;
  --on-dark:#fff7f8;
  --white:#FFFFFF;
  --shadow-soft:0 18px 44px rgba(53,3,6,.16);
}
html,body{margin:0;min-height:100%;overflow-x:hidden;overflow-y:auto}*{box-sizing:border-box}body{font-family:Arial,Helvetica,sans-serif;background:var(--theme-light);color:var(--text-main);line-height:1.7}a{text-decoration:none}img{max-width:100%;height:auto}.site-header{position:sticky;top:0;width:100%;z-index:9999;background:var(--theme-dark);color:var(--on-dark);box-shadow:var(--shadow-soft);backdrop-filter:blur(10px)}.header-inner{max-width:1280px;margin:0 auto;min-height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;gap:18px}.logo img,.footer-brand img,.drawer-logo img{display:block;height:auto;max-width:180px}.logo img{max-height:50px}.main-nav{display:none;align-items:center;gap:4px;flex:1;justify-content:center}.main-nav a{color:var(--on-dark);font-weight:700;font-size:14px;padding:10px 12px;border-radius:999px;white-space:nowrap}.main-nav a.active,.main-nav a:hover{color:var(--on-dark);background:rgba(255,255,255,.12);box-shadow:inset 0 -2px 0 var(--theme-light)}.header-actions{display:flex;align-items:center}.main-btn{display:inline-flex;align-items:center;justify-content:center;background:var(--theme);color:var(--on-theme);border-radius:999px;box-shadow:var(--shadow-soft);font-weight:800;padding:11px 20px;transition:.2s}.main-btn:hover{background:var(--theme-hover);transform:translateY(-1px)}.mobile-menu-toggle{display:flex;flex-direction:column;gap:5px;background:transparent;border:0;padding:10px;cursor:pointer}.mobile-menu-toggle span{width:24px;height:2px;background:var(--on-dark);display:block}.mobile-drawer{position:fixed;top:0;left:0;width:82%;max-width:320px;height:100vh;transform:translateX(-100%);transition:transform .28s ease;z-index:10001;background:var(--theme-dark);color:var(--on-dark);padding:18px;overflow-y:auto}.mobile-drawer.is-open{transform:translateX(0)}.drawer-overlay{position:fixed;inset:0;opacity:0;visibility:hidden;z-index:10000;background:rgba(0,0,0,.48);transition:.28s}.drawer-overlay.is-open{opacity:1;visibility:visible}body.menu-open{overflow:hidden}.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.drawer-close{font-size:34px;line-height:1;color:var(--on-dark);background:transparent;border:0;cursor:pointer}.mobile-nav{display:grid;gap:8px}.mobile-nav a{color:var(--on-dark);padding:12px 10px;border-radius:14px;background:rgba(255,255,255,.08);font-weight:700}.container,.section-inner,.header-inner,.footer-inner{width:min(1200px,calc(100% - 48px));margin:0 auto}.container{padding:0}.header-inner{max-width:1280px}.section{padding:64px 0}.hero,.hero-section{padding:76px 0;background:linear-gradient(135deg,var(--theme-dark),var(--theme));color:var(--on-dark);display:grid;gap:40px}.hero-grid{display:grid;gap:32px;align-items:center}.eyebrow{display:inline-flex;padding:7px 13px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:999px;color:var(--on-dark);font-weight:800;margin-bottom:16px}.hero h1{color:var(--on-dark);font-size:38px;line-height:1.15;margin:0 0 18px}.hero p{font-size:17px;color:rgba(255,255,255,.9)}.hero-tags,.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.hero-tags span,.category-pill{border:1px solid var(--theme-border);background:var(--white);color:var(--theme-dark);padding:10px 14px;border-radius:999px;font-weight:800}.hero .hero-tags span{background:rgba(255,255,255,.12);color:var(--on-dark);border-color:rgba(255,255,255,.24)}.visual-card{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:28px;padding:28px;box-shadow:var(--shadow-soft);min-height:300px}.visual-card .metric{background:rgba(255,255,255,.14);border-radius:22px;padding:18px;margin:12px 0}.banner,.service-strip{background:var(--theme-soft);border:1px solid var(--theme-border);border-radius:26px;padding:28px;box-shadow:var(--shadow-soft)}.section-title,h1,h2,h3,.category-number,.highlight{color:var(--theme-dark)}.section-title{font-size:30px;margin:0 0 18px}.muted{color:var(--text-muted)}.grid{display:grid;gap:20px}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.card,.zone-card,.info-card,.faq-item,.notice{background:var(--white);color:var(--text-main);border:1px solid var(--theme-border);box-shadow:var(--shadow-soft);border-radius:24px;padding:24px}.category-number,.tag{display:inline-flex;align-items:center;justify-content:center;min-width:42px;height:42px;border-radius:14px;background:var(--theme-light);color:var(--theme-dark);font-weight:900}.tag{height:auto;min-width:auto;padding:6px 10px;border-radius:999px;margin-bottom:10px}.feature-grid{display:grid;gap:20px}.content-split{display:grid;gap:28px;align-items:center;margin:28px 0}.split-visual{min-height:260px;border-radius:28px;padding:26px;background:linear-gradient(135deg,var(--theme-soft),var(--white));border:1px solid var(--theme-border);box-shadow:var(--shadow-soft);display:flex;align-items:center;justify-content:center}.split-visual ul{margin:0;padding-left:20px}.app-section{background:linear-gradient(135deg,var(--theme-soft),#fff);border:1px solid var(--theme-border);border-radius:30px;padding:28px;box-shadow:var(--shadow-soft)}.app-grid{display:grid;gap:28px;align-items:center}.content-img,.app-section img{max-width:100%;height:auto;object-fit:contain}.app-section img{max-height:420px;margin:auto;display:block}.security-section{display:grid;gap:20px}.faq{display:grid;gap:16px}.faq-item h3{margin-top:0}.notice{background:linear-gradient(135deg,var(--theme-soft),var(--white));border-left:5px solid var(--theme)}.text-link{color:var(--theme);font-weight:800}.text-link:hover{color:var(--theme-hover)}.page-hero{background:linear-gradient(135deg,var(--theme-dark),var(--theme));color:var(--on-dark);padding:64px 0}.page-hero h1{color:var(--on-dark);font-size:38px;margin:0 0 12px}.page-hero p{max-width:850px;color:rgba(255,255,255,.9)}.list-check{padding-left:20px}.list-check li{margin:8px 0}.footer{background:var(--theme-deep);color:var(--on-dark);padding-top:54px}.footer-grid{display:grid;gap:26px}.footer h3{color:var(--on-dark)}.footer p{color:rgba(255,255,255,.82)}.footer a{color:var(--on-dark);display:block;margin:8px 0}.footer a:hover{color:var(--theme-light)}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.14);padding:18px;margin-top:30px;color:rgba(255,255,255,.82)}
@media (min-width:768px){.hero-grid,.app-grid,.security-section{grid-template-columns:1fr 1fr}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(2,1fr)}.content-split{grid-template-columns:1fr 1fr}.content-split.reverse .split-text{order:1}.content-split.reverse .split-visual{order:2}.footer-grid{grid-template-columns:2fr 1fr 1fr 1.4fr}.hero h1{font-size:50px}}
@media (min-width:1024px){.hero,.hero-section{grid-template-columns:1fr}.hero-grid{grid-template-columns:minmax(0,1.15fr) minmax(420px,.85fr)}.main-nav{display:flex}.mobile-menu-toggle{display:none}.grid-4{grid-template-columns:repeat(4,1fr)}.feature-grid{grid-template-columns:repeat(3,1fr)}.header-inner{padding:0 24px}.section{padding:78px 0}}
@media (max-width:420px){.header-inner{gap:8px;padding:0 10px}.main-btn{padding:9px 14px;font-size:14px}.logo img{max-width:126px}.hero h1,.page-hero h1{font-size:30px}.section{padding:48px 0}.card,.zone-card,.info-card,.faq-item,.notice{padding:20px}}

@media (min-width:1280px){.container,.section-inner,.header-inner,.footer-inner{width:min(1280px,calc(100% - 72px))}.hero h1{font-size:64px}.page-hero h1{font-size:52px}.section{padding:96px 0}.zone-grid{grid-template-columns:repeat(4,1fr)}}

.hero-visual img{width:100%;max-height:460px;object-fit:contain;display:block;margin:auto}.brand-logo-visual{max-width:260px;margin:auto;display:block}

/* Bố cục header và màn hình rộng được tinh chỉnh cho phiên bản XO88 */
.container,
.section-inner,
.hero-inner,
.header-inner,
.footer-inner{
  width:min(1280px, calc(100% - 80px));
  margin-left:auto;
  margin-right:auto;
}
.site-logo,
.logo{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:0;
  overflow:hidden;
}
.site-logo img{
  display:block;
  width:auto;
  height:auto;
  max-width:190px;
  max-height:64px;
  object-fit:contain;
}
.mobile-header{
  display:grid;
  grid-template-columns:48px minmax(0,1fr) auto;
  align-items:center;
  gap:10px;
  min-height:64px;
  padding:8px 14px;
}
.mobile-menu-toggle{
  width:44px;
  height:44px;
  flex:0 0 auto;
  align-items:center;
  justify-content:center;
}
.mobile-register{
  flex:0 0 auto;
  white-space:nowrap;
  min-width:max-content;
  padding:10px 16px;
  border-radius:999px;
}
.hero-inner{
  display:grid;
  gap:40px;
}
.hero-visual{
  width:100%;
  min-height:420px;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
}
.hero-visual img{
  width:min(100%,560px);
  max-height:520px;
  object-fit:contain;
}
@media (max-width:1023px){
  .header-inner.mobile-header{
    width:100%;
    margin:0;
  }
  .site-logo img{
    max-width:min(150px,42vw);
    max-height:48px;
  }
  .main-nav{display:none;}
  .header-actions{justify-content:flex-end;}
}
@media (max-width:767px){
  .container,
  .section-inner,
  .hero-inner,
  .header-inner,
  .footer-inner{
    width:min(100% - 32px,1280px);
  }
  .header-inner.mobile-header{
    width:100%;
  }
  h1{font-size:clamp(32px,9vw,48px);line-height:1.12;}
}
@media (max-width:390px){
  .mobile-header{
    grid-template-columns:44px minmax(0,1fr) auto;
    gap:8px;
    padding:8px 10px;
  }
  .site-logo img{
    max-width:min(120px,36vw);
    max-height:42px;
  }
  .mobile-register{
    padding:8px 12px;
    font-size:13px;
  }
}
@media (min-width:1024px){
  .header-inner.mobile-header{
    display:flex;
    max-width:1280px;
    min-height:72px;
    padding:0 24px;
  }
  .site-logo{justify-content:flex-start;}
  .hero-inner{
    display:grid;
    grid-template-columns:minmax(0,1.05fr) minmax(460px,0.95fr);
    align-items:center;
    gap:64px;
  }
  h1{font-size:clamp(52px,5vw,72px);line-height:1.05;}
}
@media (min-width:1280px){
  .zone-grid{grid-template-columns:repeat(4,1fr);}
}
@media (min-width:1440px){
  .container,
  .section-inner,
  .hero-inner,
  .header-inner,
  .footer-inner{
    width:min(1360px, calc(100% - 120px));
  }
  .hero-inner{
    grid-template-columns:minmax(0,1fr) minmax(520px,0.95fr);
    gap:80px;
  }
  .hero-visual img{
    width:min(100%,620px);
  }
}