:root {
  color-scheme: light dark;
  --bg: #f6f7f9; --panel: #ffffff; --text: #1d2330; --muted: #677085; --line: #dde1e8;
  --accent: #2f5bd3; --accent-text: #ffffff; --danger: #c23a2b; --ok: #1f8a4c; --warn: #a86a00;
  --ok-bg: #e6f4ec; --err-bg: #fbe9e7; --warn-bg: #fdf3dc; --code-bg: #eef1f6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171d; --panel: #1c2028; --text: #e3e7ef; --muted: #98a1b3; --line: #2e3440;
    --accent: #6d8ff0; --accent-text: #0d1220; --danger: #f07a6b; --ok: #5ccf8c; --warn: #e6b04a;
    --ok-bg: #173323; --err-bg: #3a1d19; --warn-bg: #3a2e14; --code-bg: #262b35;
  }
}
* { box-sizing: border-box; }
html { font-size: 14px; }
body { margin: 0; background: var(--bg); color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.5; }
a { color: var(--accent); }
code, textarea.codes, .fp { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; }
code { background: var(--code-bg); padding: 0 4px; border-radius: 4px; font-size: 0.92em; }
code.big { font-size: 1.15em; padding: 2px 8px; }
code.fp { font-size: 0.8em; word-break: break-all; }
.top { display: flex; align-items: center; gap: 16px; padding: 8px 24px; background: var(--panel);
  border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--text); text-decoration: none; }
.top nav { display: flex; gap: 4px; flex-wrap: wrap; flex: 1; }
.top nav a { padding: 4px 12px; border-radius: 6px; text-decoration: none; color: var(--text); }
.top nav a.on { background: var(--accent); color: var(--accent-text); }
.top nav a:hover:not(.on) { background: var(--code-bg); }
.logout { margin: 0; }
main { max-width: 1280px; margin: 0 auto; padding: 16px 24px 48px; }
h1 { font-size: 1.5rem; margin: 8px 0 16px; }
h2 { font-size: 1.1rem; margin: 16px 0 8px; }
.card h2:first-child { margin-top: 0; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 16px; margin: 0 0 16px; }
.card.narrow { max-width: 420px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; }
.cards > .card { margin: 0 0 16px; }
.muted { color: var(--muted); }
.small { font-size: 0.86rem; }
.nowrap { white-space: nowrap; }
.notice { padding: 8px 12px; border-radius: 6px; margin: 0 0 16px; border: 1px solid var(--line); }
.notice.ok { background: var(--ok-bg); border-color: var(--ok); }
.notice.err { background: var(--err-bg); border-color: var(--danger); }
.notice.warn { background: var(--warn-bg); border-color: var(--warn); }
table.grid { width: 100%; border-collapse: collapse; background: var(--panel); margin: 0 0 12px; }
table.grid th, table.grid td { border-bottom: 1px solid var(--line); padding: 6px 8px; text-align: left; vertical-align: top; }
table.grid thead th { color: var(--muted); font-weight: 600; font-size: 0.9rem; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
table.bars { width: 100%; border-collapse: collapse; }
table.bars th { text-align: left; font-weight: 400; width: 7.5em; padding: 2px 0; }
table.bars td { padding: 2px 4px; }
table.bars meter { width: 100%; height: 12px; }
dl.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; margin: 0 0 12px; }
dl.kv dt { color: var(--muted); }
dl.kv dd { margin: 0; }
.badge { display: inline-block; padding: 0 8px; border-radius: 10px; font-size: 0.85rem; border: 1px solid var(--line); white-space: nowrap; }
.badge.active, .badge.used { background: var(--ok-bg); border-color: var(--ok); }
.badge.trial { background: var(--warn-bg); border-color: var(--warn); }
.badge.expired { background: var(--code-bg); }
.badge.revoked { background: var(--err-bg); border-color: var(--danger); }
.badge.unused { background: transparent; }
button, .button { font: inherit; padding: 4px 12px; border-radius: 6px; border: 1px solid var(--line);
  background: var(--panel); color: var(--text); cursor: pointer; text-decoration: none; display: inline-block; }
button:hover, .button:hover { border-color: var(--accent); }
button.primary, .button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
button.danger { color: var(--danger); border-color: var(--danger); }
button.small { padding: 0 8px; font-size: 0.86rem; }
button.link { border: none; background: none; color: var(--accent); padding: 0; }
button:disabled { opacity: 0.5; cursor: not-allowed; }
input, select, textarea { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line);
  border-radius: 6px; padding: 4px 8px; }
input.num { width: 7em; }
input.wide { width: min(100%, 36em); }
textarea.codes { width: 100%; resize: vertical; }
label.field { display: flex; flex-direction: column; gap: 4px; margin: 0 0 12px; max-width: 100%; }
.row { display: flex; gap: 16px; flex-wrap: wrap; align-items: flex-end; }
form.filters { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; margin: 0 0 16px; }
form.filters label { display: flex; gap: 4px; align-items: center; }
form.filters input[type="search"] { width: 22em; max-width: 100%; }
form.inline { display: flex; gap: 8px; align-items: center; margin: 0; flex-wrap: wrap; }
.expiry { display: flex; flex-direction: column; gap: 6px; margin: 0 0 12px; }
label.opt { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.features-head { display: flex; gap: 8px; align-items: center; margin: 0 0 8px; }
.groups { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
fieldset.group { border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; margin: 0; }
fieldset.group legend { font-weight: 600; padding: 0 4px; }
.group-tools { display: flex; gap: 4px; margin: 0 0 4px; }
label.feat { display: grid; grid-template-columns: auto 1fr auto; gap: 0 6px; align-items: baseline; padding: 2px 0; }
label.feat small { grid-column: 2 / 4; color: var(--muted); font-size: 0.82rem; }
label.feat code { font-size: 0.78rem; color: var(--muted); }
.diff span { display: inline-block; margin: 0 12px 0 0; }
.diff ins { color: var(--ok); text-decoration: none; margin: 0 0 0 4px; }
.diff del { color: var(--danger); margin: 0 0 0 4px; }
.pager { display: flex; gap: 16px; align-items: center; }