:root {
  --bg: #0b1020;
  --panel: #121a30;
  --panel-2: #0f1626;
  --ink: #e6edf7;
  --muted: #93a4c3;
  --cyan: #22d3ee;
  --green: #34d399;
  --amber: #fbbf24;
  --red: #f87171;
  --border: #1f2a44;
  --radius: 14px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #16213f 0%, var(--bg) 55%);
  color: var(--ink);
  line-height: 1.55;
}
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
header {
  padding: 26px 20px 10px;
  max-width: 1080px;
  margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo { font-family: monospace; font-weight: 700; font-size: 26px; color: var(--cyan); }
.brand .tag { color: var(--muted); font-size: 14px; }
.badge {
  display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .04em;
  padding: 3px 9px; border-radius: 999px; border: 1px solid var(--border);
  background: #14233f; color: var(--green); text-transform: uppercase;
}
.hero { padding: 8px 20px 0; max-width: 1080px; margin: 0 auto; }
.hero h1 { font-size: 30px; margin: 6px 0 8px; }
.hero p { color: var(--muted); max-width: 760px; }
.demo-banner {
  margin: 14px 20px 0; max-width: 1080px; margin-left: auto; margin-right: auto;
  background: #2a1f12; border: 1px solid #5a3d18; color: #fcd9a0;
  padding: 9px 14px; border-radius: 10px; font-size: 13px;
}
main { max-width: 1080px; margin: 0 auto; padding: 16px 20px 60px; }
section { margin-top: 30px; }
h2 { font-size: 20px; border-left: 3px solid var(--cyan); padding-left: 10px; }
.grid { display: grid; gap: 14px; }
.cards { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.card, .panel {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px;
}
.stat { font-size: 26px; font-weight: 700; }
.stat small { display: block; font-size: 12px; color: var(--muted); font-weight: 400; }
label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
input, select, textarea {
  width: 100%; background: var(--panel-2); color: var(--ink);
  border: 1px solid var(--border); border-radius: 9px; padding: 9px 10px; font-size: 14px;
}
button {
  background: var(--cyan); color: #05222b; border: 0; border-radius: 9px;
  padding: 10px 16px; font-weight: 700; cursor: pointer; font-size: 14px; margin-top: 12px;
}
button.secondary { background: #1c2a47; color: var(--ink); border: 1px solid var(--border); }
button:hover { filter: brightness(1.06); }
table { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }
code, .mono { font-family: monospace; }
.pre {
  background: #0a0f1d; border: 1px solid var(--border); border-radius: 10px;
  padding: 12px; overflow: auto; font-family: monospace; font-size: 12.5px; color: #cfe6f5;
  white-space: pre; max-height: 320px;
}
.pill { font-size: 11px; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--border); }
.pill.ok { color: var(--green); border-color: #1d4d3a; }
.pill.warn { color: var(--amber); border-color: #5a4318; }
.pill.bad { color: var(--red); border-color: #5a2020; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.muted { color: var(--muted); }
footer { max-width: 1080px; margin: 0 auto; padding: 20px; color: var(--muted); font-size: 12px; border-top: 1px solid var(--border); }
.toast {
  position: fixed; bottom: 18px; right: 18px; background: #11233f; border: 1px solid var(--border);
  color: var(--ink); padding: 12px 16px; border-radius: 10px; opacity: 0; transition: opacity .25s;
  pointer-events: none; z-index: 50; max-width: 360px;
}
.toast.show { opacity: 1; }
.toast.err { border-color: #5a2020; color: #ffd7d7; }
@media (max-width: 640px) { .hero h1 { font-size: 24px; } }