:root{
  --bg:#f7fafc;
  --card:#ffffff;
  --accent:#0b6efd;
  --muted:#6b7280;
  --pad:18px;
  --radius:12px;
  --mono: "Courier New", monospace;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
  color:#0f1724;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
.container{max-width:1100px;margin:28px auto;padding:0 20px}
.site-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  background: rgba(255,255,255,0.85);
  padding:14px 18px;border-radius:10px;border:1px solid rgba(13,27,62,0.06);
  box-shadow: 0 6px 20px rgba(12,21,40,0.04);
}
.brand h1{margin:0;font-size:18px}
.brand p{margin:0;font-size:12px;color:var(--muted)}
.site-nav{display:flex;gap:8px;align-items:center}
.site-nav a{color:var(--accent);text-decoration:none;padding:6px 10px;border-radius:8px;border:1px solid transparent;transition:.12s}
.site-nav a:hover{background:linear-gradient(90deg, rgba(11,110,253,0.06), rgba(10,88,202,0.04))}
.hero{display:flex;justify-content:space-between;gap:20px;padding:18px;background:linear-gradient(180deg,#fff,#fbfdff);border-radius:12px;border:1px solid rgba(10,23,53,0.03)}
.hero .lead{font-size:16px;color:#10203a}
.cards{display:flex;gap:16px;margin-top:18px;flex-wrap:wrap}
.card{background:var(--card);padding:16px;border-radius:12px;box-shadow:0 6px 18px rgba(12,21,40,0.04);flex:1 1 300px;min-width:220px}
.btn{display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--accent);border:1px solid var(--accent);padding:8px 12px;border-radius:10px;text-decoration:none;cursor:pointer}
.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;align-items:end;margin:16px 0}
.form-grid label{font-size:13px;color:var(--muted)}
.form-grid select, .form-grid input{padding:10px;border:1px solid #e6edf3;border-radius:8px;background:#fbfdff}
.selected-chip{background:#eef6ff;border-radius:999px;padding:6px 10px;border:1px solid rgba(11,110,253,0.08);font-size:13px;display:inline-flex;gap:8px;align-items:center}
.output{background:linear-gradient(180deg,#071224,#0f1724);color:#e6eef8;padding:12px;border-radius:10px;overflow:auto;font-family:var(--mono);white-space:pre-wrap;border:1px solid rgba(255,255,255,0.04)}
.output.compact{max-height:160px}
.output.expanded{max-height:520px}
.status-banner{padding:10px;border-radius:8px;margin:10px 0;font-size:14px}
.status-warn{background:#fff3cd;border:1px solid #ffeeba;color:#664d03}
.status-ok{background:#e6ffef;border:1px solid #c6f6d5;color:#06370a}
.small{font-size:13px;color:var(--muted)}
.codebox{background:#fbfdff;border-radius:8px;padding:10px;border:1px solid rgba(12,21,40,0.03)}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0}
@media (max-width:880px){
  .form-grid{grid-template-columns:1fr;align-items:stretch}
  .site-header{flex-direction:column;align-items:flex-start;gap:8px}
  .cards{flex-direction:column}
}