:root {
  --bg: #f1f1f1;
  --card: #ffffff;
  --line: #e1e1e1;
  --ink: #303030;
  --ink-soft: #616161;
  --ok-bg: #afe0b8;
  --ok-ink: #0c5132;
  --bad-bg: #ffd6d6;
  --bad-ink: #8e1f0b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.5 -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
}

.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.topbar a { color: var(--ink); text-decoration: none; font-weight: 500; }
.topbar a:hover { text-decoration: underline; }
.topbar .spacer { flex: 1; }

.page { max-width: 900px; margin: 0 auto; padding: 24px 16px 64px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
}

.card h2 { margin: 0 0 12px; font-size: 15px; font-weight: 600; }

.row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.row:first-of-type { border-top: none; }
.row .grow { flex: 1; min-width: 0; }
.row .name { font-weight: 500; }
.row .meta { color: var(--ink-soft); font-size: 12px; margin-top: 2px; }

.badge {
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 8px;
  white-space: nowrap;
}

.badge-ok { background: var(--ok-bg); color: var(--ok-ink); }
.badge-bad { background: var(--bad-bg); color: var(--bad-ink); }

label { display: block; margin: 14px 0 4px; font-weight: 500; }
label:first-child { margin-top: 0; }

input[type=text], input[type=password], input[type=number], select, textarea {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid #8a8a8a;
  border-radius: 8px;
  font: inherit;
  background: var(--card);
  color: var(--ink);
}

textarea { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; }

.hint { color: var(--ink-soft); font-size: 12px; margin: 4px 0 0; }

button {
  padding: 7px 14px;
  border-radius: 8px;
  border: 1px solid #8a8a8a;
  background: var(--card);
  color: var(--ink);
  font: inherit;
  cursor: pointer;
}

button:hover { background: #f7f7f7; }

button.primary { background: var(--ink); color: #fff; border-color: var(--ink); }
button.primary:hover { background: #1a1a1a; }
button.danger { color: var(--bad-ink); border-color: var(--bad-ink); }

.banner {
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 16px;
  font-size: 13px;
}

.banner-bad { background: var(--bad-bg); color: var(--bad-ink); }
.banner-ok { background: var(--ok-bg); color: var(--ok-ink); }

.preview-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 16px 0 8px;
}

.unit-toggle { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--ink-soft); }
.unit-toggle button { padding: 3px 12px; font-size: 12px; }
.unit-toggle button[aria-pressed=true] { background: var(--ink); color: #fff; border-color: var(--ink); }

.preview-wrap { border: 1px solid var(--line); border-radius: 8px; overflow-x: auto; }
.preview-table { border-collapse: collapse; width: 100%; font-size: 13px; }
.preview-table th, .preview-table td {
  border-bottom: 1px solid var(--line);
  padding: 7px 10px;
  text-align: center;
  white-space: nowrap;
}
.preview-table th { background: #fafafa; font-weight: 500; }
.preview-table tr:last-child td { border-bottom: none; }

.actions { display: flex; align-items: center; gap: 12px; margin-top: 8px; }
.actions .hint { margin: 0; }

table.rules { width: 100%; border-collapse: collapse; font-size: 13px; }
table.rules th, table.rules td {
  border-bottom: 1px solid var(--line);
  padding: 7px 8px;
  text-align: left;
}
table.rules th { color: var(--ink-soft); font-weight: 500; }