:root {
  --bg: #0f1420;
  --card: #1a2233;
  --fg: #e6ebf5;
  --muted: #93a0b8;
  --accent: #3b82f6;
  --ok: #22c55e;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--fg);
}
.wrap { max-width: 720px; margin: 0 auto; padding: 32px 20px 64px; }
h1 { margin: 0 0 4px; font-size: 26px; }
.sub { color: var(--muted); margin: 0 0 24px; }
.card {
  background: var(--card);
  border: 1px solid #2a3450;
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}
.card h2 { margin-top: 0; }
form label { display: block; margin: 12px 0; color: var(--muted); }
form input {
  display: block; width: 100%; margin-top: 6px;
  padding: 10px; border-radius: 8px;
  border: 1px solid #2a3450; background: #0f1420; color: var(--fg);
}
button {
  background: var(--accent); color: #fff; border: 0;
  padding: 10px 16px; border-radius: 8px; cursor: pointer; font-size: 14px;
}
button.ghost { background: transparent; border: 1px solid #2a3450; color: var(--muted); }
.row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin: 10px 0; }
.info { color: var(--muted); }
.err { color: #f87171; min-height: 18px; }
.kv { margin: 14px 0; }
.k { color: var(--muted); display: block; margin-bottom: 6px; }
code.v {
  display: block; word-break: break-all; background: #0f1420;
  border: 1px solid #2a3450; border-radius: 8px; padding: 10px; font-size: 12px;
}
.log {
  background: #0f1420; border: 1px solid #2a3450; border-radius: 8px;
  padding: 12px; height: 240px; overflow: auto; white-space: pre-wrap;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: 12px;
}
.hint { color: var(--muted); font-size: 12px; line-height: 1.6; }
b { color: var(--ok); }