:root{
  --bg:#0f1220; --panel:#151a2e; --ring:#2a3356; --text:#e7ebf3;
  --muted:#9aa3b2; --primary:#6ea8fe; --accent:#8b5cf6; --tile:#1e2441; --ok:#22c55e
}
*{box-sizing:border-box}
body{
  margin:0; font-family:system-ui,-apple-system,Segoe UI,Inter,Roboto,Arial;
  min-height:100svh; display:block; color:var(--text);
  background:radial-gradient(1200px 800px at 10% -10%,#1a1d33,var(--bg));
  overflow-x:hidden;
}
.wrap{width:min(960px,92vw);margin:20px auto}
.hero{text-align:center}
.die{width:84px;height:84px;margin:0 auto 10px;display:block;filter:drop-shadow(0 10px 24px rgba(0,0,0,.35))}
h1{margin:0;font-size:clamp(26px,4vw,40px)}
.lead{margin:6px 0 0;color:var(--muted)}
.card{
  margin-top:18px;background:linear-gradient(180deg,rgba(255,255,255,.02),transparent 60%),var(--panel);
  border:1px solid var(--ring);border-radius:16px;padding:24px;box-shadow:0 18px 50px rgba(0,0,0,.35)
}
.grid{display:grid;gap:16px;grid-template-columns:repeat(12,1fr)}
.col-12{grid-column:span 12}.col-6{grid-column:span 6}
@media(max-width:900px){.col-6{grid-column:span 12}}
label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
input,select{
  background:var(--tile);border:1px solid var(--ring);color:var(--text);
  padding:12px 14px;border-radius:12px;outline:none;width:100%;font-size:16px
}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.btn{
  border:1px solid var(--ring);background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  color:var(--text);padding:10px 14px;border-radius:10px;cursor:pointer;font-weight:700
}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn.primary{border-color:rgba(110,168,254,.6)}
.btn.accent{border-color:rgba(139,92,246,.6)}
.hint{font-size:12px;color:var(--muted)}
.error{margin-top:10px;color:#fecaca;font-size:13px;display:none}

header{
  width:min(1200px,96vw);margin:16px auto 0;display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap
}
.title{font-size:18px;color:#cbd5ff}