:root {
  --ink: #1c1c1e;
  --ink2: #55555a;
  --ink3: #8e8e93;
  --line: #e7e7e4;
  --paper: #f6f6f4;
  --accent: #2f4bff;
  --danger: #d93025;
  --ok: #1a7f37;
  --radius: 12px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.6;
  font-size: 15px;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; border-bottom: 1px solid var(--line);
}
.nav .logo { font-size: 18px; font-weight: 700; color: var(--ink); }
.nav .links { display: flex; gap: 20px; align-items: center; }
.nav .links a { color: var(--ink2); font-size: 14px; }
.btn {
  display: inline-block; background: var(--ink); color: #fff; border: 0;
  padding: 9px 18px; border-radius: 8px; cursor: pointer; font-size: 14px;
}
.btn:hover { opacity: 0.88; text-decoration: none; }
.btn.primary { background: var(--accent); }
.btn.ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.card {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; margin: 14px 0; background: #fff;
}
h1 { font-size: 22px; }
h2 { font-size: 17px; margin: 10px 0; }
.muted { color: var(--ink3); font-size: 13px; }
.badge {
  display: inline-block; font-size: 12px; padding: 1px 8px; border-radius: 10px;
  background: #eef0ff; color: var(--accent);
}
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--ink3); font-weight: 500; }
input, select {
  width: 100%; padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px;
  font-size: 14px; background: #fff;
}
label { display: block; font-size: 13px; color: var(--ink2); margin: 10px 0 4px; }
.row { display: flex; gap: 14px; flex-wrap: wrap; }
.row > div { flex: 1; min-width: 160px; }
.alert { padding: 10px 14px; border-radius: 8px; margin: 10px 0; font-size: 14px; }
.alert.ok { background: #e6f4ea; color: var(--ok); }
.alert.err { background: #fce8e6; color: var(--danger); }
.alert.info { background: #e8f0fe; color: #1a56db; }
.pager { display: flex; gap: 8px; align-items: center; margin: 12px 0; }
.pager button { padding: 5px 12px; border: 1px solid var(--line); background: #fff; border-radius: 6px; cursor: pointer; }
.nocopy { user-select: none; -webkit-user-select: none; }
.kbd {
  display: inline-block; font-family: ui-monospace, monospace; background: var(--paper);
  border: 1px solid var(--line); border-radius: 5px; padding: 0 6px; font-size: 13px;
}
.footer { margin-top: 40px; padding: 18px 0; border-top: 1px solid var(--line); color: var(--ink3); font-size: 12.5px; }
@media (max-width: 720px) {
  .nav .links { gap: 10px; }
  .row > div { min-width: 100%; }
}