:root {
  color-scheme: dark;
  --bg: #10151c;
  --card: #1a2330;
  --text: #e8eef6;
  --muted: #9aabbd;
  --line: #2d3c4e;
  --accent: #3ddc97;
  --warn: #f5c542;
  --danger: #ff6b6b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.5 "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}
header, main { width: min(1100px, calc(100% - 32px)); margin: 0 auto; }
header { padding: 24px 0 8px; }
h1 { font-size: 28px; margin: 0; }
h2 { font-size: 18px; margin: 0 0 8px; }
a { color: var(--accent); }
.panel, .card, form.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  margin: 16px 0;
}
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.stats div, .card { min-width: 0; }
.muted { color: var(--muted); }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
label { display: block; margin: 10px 0; }
input, button {
  font: inherit;
  color: var(--text);
  background: #0e141c;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
}
button, .button { cursor: pointer; background: #163528; border-color: #24684a; }
button.danger { background: #3a1d1d; border-color: #7a3030; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.addr { font-family: Consolas, "Cascadia Mono", monospace; word-break: break-all; }
.tail { background: var(--warn); color: #1c1404; font-weight: 700; border-radius: 4px; padding: 0 2px; }
.error { color: var(--danger); }
.copy { width: min(100%, 640px); }
.hit { border-top: 1px solid var(--line); padding-top: 10px; margin-top: 10px; }
@media (max-width: 800px) {
  .stats, .grid { grid-template-columns: 1fr; }
}