:root{
  --bg:#ffffff;
  --ink:#0b0f14;
  --muted:#5b6876;
  --brand:#111827;
  --accent: #4f46e5;
  --accent-2: #06b6d4;
  --ring: rgba(79,70,229,.25);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color:var(--ink);
  background:radial-gradient(1200px 700px at 80% -10%, rgba(6,182,212,.12), transparent 60%),
             radial-gradient(1200px 700px at -20% 120%, rgba(79,70,229,.10), transparent 60%),
             var(--bg);
  line-height:1.55;
}

.site-header{
  position:sticky; top:0; z-index:10;
  backdrop-filter: blur(8px);
  background:rgba(255,255,255,.75);
  border-bottom:1px solid rgba(17,24,39,.06);
  display:flex; justify-content:space-between; align-items:center;
  padding:14px 20px;
}
.logo{font-weight:800; letter-spacing:.2px; font-size:20px}
.logo span{color:var(--accent)}
.top-actions .btn{margin-left:8px}

.hero{
  position:relative;
  padding:80px 20px 60px;
  max-width:1100px; margin:0 auto; text-align:center;
}
.badge{
  display:inline-block; padding:6px 10px; border-radius:999px;
  background:rgba(79,70,229,.08); color:var(--accent); font-weight:600; font-size:12px;
}
.hero h1{font-size:48px; margin:16px 0 6px;}
.hero h1 em{font-style:normal; color:var(--accent)}
.subtitle{color:var(--muted); margin:0 auto 24px; max-width:720px}
.cta .btn{margin:0 8px 8px 8px}
.meta{display:flex; gap:16px; justify-content:center; flex-wrap:wrap; color:var(--muted); margin-top:14px; font-size:14px}

.decor .orb{
  position:absolute; width:180px; height:180px; border-radius:50%;
  background: radial-gradient(circle at 30% 30%, rgba(6,182,212,.25), rgba(79,70,229,.20));
  top:-30px; right:60px; filter: blur(12px); opacity:.8;
}
.decor .mesh{
  position:absolute; inset:auto 0 -60px 0; height:140px;
  background: repeating-linear-gradient(90deg, rgba(17,24,39,.05), rgba(17,24,39,.05) 1px, transparent 1px, transparent 18px);
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.5), transparent);
}

.value, .buy, .offer, .faq{
  padding:50px 20px; max-width:1000px; margin:0 auto;
}
.value h2, .buy h2, .offer h2, .faq h2{font-size:28px; margin-bottom:18px}
.grid.three{
  list-style:none; padding:0; margin:0; display:grid; grid-template-columns:repeat(3,1fr); gap:16px;
}
.grid.three li{background:#fff; border:1px solid rgba(17,24,39,.06); border-radius:16px; padding:18px;
  box-shadow: 0 10px 30px rgba(17,24,39,.05);
}
.grid.three h3{margin:0 0 6px}
.grid.three p{margin:0; color:var(--muted)}

.buy-cards{display:grid; grid-template-columns:repeat(2,1fr); gap:16px}
.card{background:#fff; border:1px solid rgba(17,24,39,.06); border-radius:16px; padding:18px; box-shadow:0 10px 30px rgba(17,24,39,.05)}

.form-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:16px;
}
.form-grid label{display:flex; flex-direction:column; font-weight:600; font-size:14px}
.form-grid input, .form-grid textarea{
  margin-top:8px; padding:12px 12px; border-radius:12px; border:1px solid rgba(17,24,39,.15);
  outline:none; transition:.2s box-shadow, .2s border-color; font:inherit;
}
.form-grid input:focus, .form-grid textarea:focus{box-shadow:0 0 0 6px var(--ring); border-color:var(--accent)}
.form-grid .span{grid-column:1/-1}
.actions{margin-top:12px; display:flex; gap:10px; align-items:center}

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 16px; border-radius:12px; border:1px solid rgba(17,24,39,.15);
  text-decoration:none; color:var(--ink); background:#fff; cursor:pointer; transition:.18s transform, .18s box-shadow;
  box-shadow: 0 6px 18px rgba(17,24,39,.06);
}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:linear-gradient(90deg, var(--accent), var(--accent-2)); color:#fff; border-color:transparent; box-shadow:0 10px 24px rgba(79,70,229,.24)}
.btn.ghost{background:transparent}

details{background:#fff; border:1px solid rgba(17,24,39,.1); padding:14px 16px; border-radius:12px; margin-bottom:10px}
details > summary{cursor:pointer; font-weight:600}
details > p{color:var(--muted)}

.site-footer{
  padding:30px 20px; text-align:center; color:var(--muted); border-top:1px solid rgba(17,24,39,.06);
}

@media (max-width: 900px){
  .grid.three{grid-template-columns:1fr}
  .buy-cards{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .hero h1{font-size:36px}
}