:root {
  --bg: #0f172a;
  --panel: #111827;
  --card: #1e293b;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --line: #334155;
  --accent: #38bdf8;
  --ok: #34d399;
  --err: #f87171;
  --danger: #ef4444;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 500px at 10% -10%, #1d4ed833, transparent),
    radial-gradient(900px 400px at 90% 0%, #0ea5e933, transparent),
    var(--bg);
}
.page { min-height: 100vh; padding: 2rem 1rem; }
.panel {
  width: min(720px, 100%);
  margin: 0 auto;
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
.panel.narrow { width: min(420px, 100%); }
.panel.wide { width: min(980px, 100%); }
h1 { margin: 0 0 .4rem; font-size: 1.35rem; }
h2 { margin: 0 0 .8rem; font-size: 1.05rem; }
.muted { color: var(--muted); margin: 0 0 1rem; }
.meta { display: grid; grid-template-columns: 110px 1fr; gap: .4rem .75rem; margin: 1rem 0 1.25rem; }
.meta dt { color: var(--muted); }
.meta dd { margin: 0; }
code, pre {
  font-family: ui-monospace, Consolas, monospace;
  background: #0b1220;
  border: 1px solid var(--line);
  border-radius: 8px;
}
code { padding: .1rem .35rem; }
pre { padding: .75rem 1rem; overflow: auto; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border: none; border-radius: 10px; padding: .65rem 1rem;
  background: var(--accent); color: #082f49; font-weight: 700;
  text-decoration: none; cursor: pointer;
}
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn.danger { background: var(--danger); color: #fff; }
.btn.small { padding: .35rem .65rem; font-size: .85rem; }
.alert { padding: .7rem .9rem; border-radius: 10px; margin-bottom: 1rem; }
.alert.ok { background: #064e3b55; color: var(--ok); border: 1px solid #065f46; }
.alert.err { background: #7f1d1d55; color: var(--err); border: 1px solid #991b1b; }
.form { display: grid; gap: .85rem; }
.form.row { grid-template-columns: 1.2fr 1fr auto; align-items: end; }
.form label { display: grid; gap: .35rem; color: var(--muted); font-size: .9rem; }
.form input {
  width: 100%; padding: .65rem .75rem; border-radius: 10px;
  border: 1px solid var(--line); background: #0b1220; color: var(--text);
}
.grow { min-width: 0; }
.top { display: flex; justify-content: space-between; gap: 1rem; align-items: flex-start; margin-bottom: 1rem; }
.card-block {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 1rem; margin-bottom: 1rem;
}
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: .55rem .4rem; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { color: var(--muted); font-weight: 600; }
a { color: var(--accent); }
@media (max-width: 720px) {
  .form.row { grid-template-columns: 1fr; }
  .top { flex-direction: column; }
}