/* Template UI (bố cục/kiểu giống ảnh mẫu) - nội dung placeholder hợp pháp */
:root{
  --bg:#0b0d12;
  --panel:#1a1f2a;
  --panel2:#121622;
  --stroke:rgba(255,255,255,.10);
  --text:#e9edf7;
  --muted:#aab3c6;
  --accent:#b6ff00;
  --shadow: 0 18px 60px rgba(0,0,0,.45);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:"Rajdhani", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background: linear-gradient(180deg, #0a0c10, #0b0d12 40%, #0a0c10);
}

.container{width:min(1120px, 92%); margin:0 auto}

/* top strip */
.top-strip{
  background: rgba(0,0,0,.55);
  border-bottom: 1px solid rgba(255,255,255,.06);
  padding: 10px 0;
  letter-spacing:.8px;
}
.top-strip .container{
  display:flex; gap:10px; align-items:center; justify-content:center;
  font-weight:700;
}
.top-strip .phone{color:var(--text); text-decoration:none}
.top-strip .phone:hover{color:var(--accent)}

/* nav */
.nav{
  position:sticky; top:0; z-index:20;
  background: rgba(12,14,20,.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 14px 0;
}
.nav-left{display:flex; gap:18px; align-items:center}
.nav-link{
  color:var(--text);
  text-decoration:none;
  font-weight:700;
  letter-spacing:.7px;
  opacity:.9;
}
.nav-link:hover{opacity:1; color:var(--accent)}
.pill{
  font-size:12px;
  background:#ff3b30;
  color:white;
  padding:2px 6px;
  border-radius:999px;
  margin-left:6px;
  vertical-align:middle;
}
.nav-right{display:flex; gap:10px; align-items:center}
.btn-small{
  border:1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.06);
  color:var(--text);
  text-decoration:none;
  padding:7px 12px;
  border-radius:8px;
  font-weight:700;
  letter-spacing:.6px;
}
.btn-small:hover{background: rgba(255,255,255,.10)}
.or{opacity:.75}

/* hero */
.hero{position:relative; min-height: calc(100vh - 104px);}
.hero-bg{
  position:absolute; inset:0;
  background:
    radial-gradient(900px 420px at 50% 10%, rgba(182,255,0,.14), transparent 60%),
    radial-gradient(1000px 600px at 10% 30%, rgba(255,255,255,.06), transparent 60%),
    linear-gradient(180deg, rgba(0,0,0,.65), rgba(0,0,0,.35));
  pointer-events:none;
}
.hero-inner{position:relative; padding: 36px 0 40px;}

/* title like screenshot */
.hero-title{
  text-align:center;
  margin: 10px 0 10px;
  font-size: clamp(26px, 3.2vw, 44px);
  letter-spacing: 1.2px;
  font-weight: 700;
}
.accent{color:var(--accent)}
.hero-underline{
  width:120px; height:4px;
  background: var(--accent);
  border-radius:999px;
  margin: 0 auto 26px;
  box-shadow: 0 0 18px rgba(182,255,0,.35);
}

/* cards grid 3 columns */
.cards{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  align-items:stretch;
}
@media (max-width: 980px){
  .cards{grid-template-columns: 1fr 1fr;}
}
@media (max-width: 640px){
  .cards{grid-template-columns: 1fr;}
}

.card{
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 14px;
  overflow:hidden;
  box-shadow: var(--shadow);
}
.card-img{position:relative; background: var(--panel2)}
.card-img img{width:100%; height:190px; object-fit:cover; display:block}
.badge{
  position:absolute; top:10px; left:10px;
  background: var(--accent);
  color:#0b0d12;
  font-weight:800;
  font-size:12px;
  padding: 4px 8px;
  border-radius: 4px;
}

.card-body{padding: 14px 14px 16px;}
.card-title{
  text-align:center;
  margin: 6px 0 10px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .8px;
}
.card-desc{
  margin:0 0 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
  min-height: 46px;
}

.card-row{
  display:flex;
  gap:10px;
  align-items:center;
  margin: 8px 0 12px;
}

.card-select{
  flex:1;
  background: rgba(0,0,0,.25);
  border: 1px solid rgba(255,255,255,.14);
  color: var(--text);
  padding: 10px 10px;
  border-radius: 10px;
  outline:none;
  font-family: inherit;
  font-weight: 600;
}
.card-buy{
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.16);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  cursor:pointer;
  font-family: inherit;
  font-weight: 800;
  letter-spacing: .7px;
  min-width: 110px;
}
.card-buy:hover{background: rgba(255,255,255,.12)}
.card-buy:active{transform: translateY(1px)}

.card-guide{
  display:block;
  text-align:center;
  text-decoration:none;
  color: var(--text);
  font-weight: 800;
  letter-spacing: .6px;
  border: 1px solid rgba(255,255,255,.16);
  background: transparent;
  padding: 11px 12px;
  border-radius: 10px;
}
.card-guide:hover{background: rgba(255,255,255,.06)}

/* footer */
.footer{
  text-align:center;
  margin-top: 26px;
  color: rgba(255,255,255,.70);
  font-size: 13px;
  letter-spacing:.4px;
  padding: 18px 0 0;
}