:root{
  --bg:#0b0f17;
  --card:#111827;
  --muted:#9ca3af;
  --text:#e5e7eb;
  --line:#243047;
  --btn:#e5e7eb;
  --btnText:#0b0f17;
  --btn2:#1f2937;
}

*{box-sizing:border-box}
body{
  margin:0;
  background:linear-gradient(180deg,#070a10, #0b0f17 40%, #070a10);
  color:var(--text);
  font-family:system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}
.container{
  max-width:920px;
  margin:24px auto;
  padding:0 14px;
}
.card{
  background:rgba(17,24,39,.92);
  border:1px solid var(--line);
  border-radius:16px;
  padding:18px 18px;
  margin:14px 0;
  box-shadow:0 10px 30px rgba(0,0,0,.25);
}
h1{margin:0 0 8px;font-size:26px}
h2{margin:0 0 12px;font-size:18px}
h3{margin:16px 0 8px;font-size:15px;color:#d1d5db}
.subtitle{margin:0;color:var(--muted);line-height:1.4}
.details{margin-top:10px}
.details summary{cursor:pointer;color:#c7d2fe}
.details p{color:var(--muted);margin:10px 0 0;line-height:1.5}

.form label{display:block;margin:10px 0;color:#d1d5db}
input,select{
  width:100%;
  margin-top:6px;
  padding:12px 12px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#0b1220;
  color:var(--text);
  outline:none;
}
input:focus, select:focus{border-color:#64748b}
.grid2{
  display:grid;
  grid-template-columns:1fr;
  gap:12px;
}
@media(min-width:760px){
  .grid2{grid-template-columns:1fr 1fr}
}
.check{
  display:flex !important;
  gap:10px;
  align-items:center;
  margin-top:12px !important;
  color:#d1d5db;
}
.check input{width:auto;margin:0}
.note{color:var(--muted);font-size:13px;line-height:1.5;margin:12px 0 0}

.btn{
  margin-top:14px;
  width:100%;
  padding:12px 14px;
  border:none;
  border-radius:14px;
  font-weight:700;
  cursor:pointer;
  background:var(--btn);
  color:var(--btnText);
}
.btn:hover{opacity:.92}
.btn.secondary{
  background:var(--btn2);
  color:var(--text);
  border:1px solid var(--line);
}
.footer{color:var(--muted);text-align:center;margin:18px 0 10px}

.sep{
  border:0;
  height:1px;
  background:var(--line);
  margin:16px 0;
}

.numsBlock{
  border:1px solid var(--line);
  border-radius:14px;
  padding:12px;
  margin-top:10px;
  background:#0b1220;
}
.numsTitle{
  color:var(--muted);
  font-size:13px;
  margin:0 0 6px;
}
.nums{
  font-size:22px;
  font-weight:800;
  letter-spacing:1px;
}
.kv{
  display:grid;
  grid-template-columns:1fr;
  gap:8px;
}
@media(min-width:760px){
  .kv{grid-template-columns:1fr 1fr}
}
.kv div{
  background:#0b1220;
  border:1px solid var(--line);
  border-radius:12px;
  padding:10px;
  color:#d1d5db;
}
.kv b{color:#fff}
.explain{color:var(--muted);line-height:1.6}
.actions{margin-top:14px}