:root {
  --bg: #eef6fc;
  --card: #ffffff;
  --ink: #0d2b45;
  --muted: #64748b;
  --line: #dbe7f1;
  --brand: #1fa2e8;
  --brand-dark: #0b86cc;
  --danger: #dc2626;
  --s: #b91c1c;
  --a: #c2410c;
  --b: #0369a1;
  --c: #64748b;
  font-family: "Source Han Sans SC", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-size: 14px; }
[hidden] { display: none !important; }
button { font: inherit; border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 8px; padding: 6px 12px; cursor: pointer; }
button:hover { border-color: var(--brand); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.primary { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 600; }
button.primary:hover:not(:disabled) { background: var(--brand-dark); }
button.link { border: none; background: none; color: var(--brand-dark); padding: 0 4px; }
button.wide { width: 100%; padding: 10px; }
input, select { font: inherit; border: 1px solid var(--line); border-radius: 8px; padding: 5px 8px; background: #fff; color: var(--ink); }
.muted { color: var(--muted); }
.error { color: var(--danger); }
.card { background: var(--card); border-radius: 14px; padding: 16px; box-shadow: 0 1px 3px rgba(13, 43, 69, .06); }

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: min(380px, 100%); display: flex; flex-direction: column; gap: 12px; }
.login-card h1 { margin: 0; font-size: 20px; }
.login-card label { display: flex; flex-direction: column; gap: 4px; color: var(--muted); }

.topbar { position: sticky; top: 0; z-index: 10; display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; justify-content: space-between; padding: 12px 20px; background: #fff; border-bottom: 1px solid var(--line); }
.brand { display: flex; gap: 8px; align-items: center; font-size: 16px; }
.tag { background: var(--brand); color: #fff; border-radius: 999px; padding: 2px 10px; font-size: 12px; font-weight: 700; }
.controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.controls label { color: var(--muted); display: flex; gap: 4px; align-items: center; }
.user { color: var(--muted); display: flex; gap: 6px; align-items: center; }

main { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 16px; padding: 16px 20px 40px; align-items: start; }
@media (max-width: 1000px) { main { grid-template-columns: 1fr; } }
.side { position: sticky; top: 76px; display: flex; flex-direction: column; gap: 16px; }
.side h2 { margin: 0 0 8px; font-size: 15px; }

.sections { display: grid; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); gap: 16px; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; }
.section-head h2 { margin: 0; font-size: 16px; }
.section-head .no { color: var(--brand); margin-right: 6px; font-weight: 400; }
.quota { color: var(--muted); font-size: 12px; }
.quota.full { color: var(--brand-dark); font-weight: 600; }
.items { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.empty { color: var(--muted); font-size: 12px; padding: 12px 0; text-align: center; }

.item { border: 1px solid var(--line); border-radius: 10px; padding: 10px; display: grid; grid-template-columns: 22px 1fr; gap: 4px 8px; }
.item.picked { border-color: var(--brand); background: #f3faff; }
.item input[type=checkbox] { margin: 3px 0 0; width: 16px; height: 16px; accent-color: var(--brand); cursor: pointer; }
.item-title { font-weight: 600; line-height: 1.45; cursor: pointer; }
.item-meta { grid-column: 2; display: flex; flex-wrap: wrap; gap: 4px 6px; align-items: center; font-size: 12px; color: var(--muted); }
.chip { border-radius: 4px; padding: 1px 6px; background: #f1f5f9; }
.chip.plus { background: #d8eeff; color: var(--brand-dark); }
.chip.warn { background: #fff7ed; color: #c2410c; }
.level { font-weight: 700; border-radius: 4px; padding: 0 6px; color: #fff; }
.level.S { background: var(--s); } .level.A { background: var(--a); } .level.B { background: var(--b); } .level.C { background: var(--c); }
.item select { font-size: 12px; padding: 1px 4px; margin-left: auto; }
.item-detail { grid-column: 2; font-size: 13px; line-height: 1.7; border-top: 1px dashed var(--line); padding-top: 6px; }
.item-detail p { margin: 4px 0; }
.item-detail .reason { color: var(--muted); font-size: 12px; }

.pick-list { margin: 0 0 12px; padding-left: 20px; display: flex; flex-direction: column; gap: 4px; max-height: 40vh; overflow: auto; }
.pick-list .group { list-style: none; margin-left: -20px; color: var(--brand-dark); font-weight: 600; margin-top: 6px; }
.gen-status { margin-top: 10px; font-size: 13px; line-height: 1.6; }
.gen-status .downloads { display: flex; gap: 8px; margin-top: 6px; }
.history { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; font-size: 13px; }
.history li { display: flex; justify-content: space-between; gap: 8px; align-items: center; }
.install summary { cursor: pointer; color: var(--brand-dark); font-weight: 600; }
.install ol { margin: 8px 0; padding-left: 20px; line-height: 1.8; font-size: 13px; }
.install code { background: #f1f5f9; border-radius: 4px; padding: 0 4px; }
.install p { font-size: 12px; margin: 0; }
.item[draggable=true] { cursor: grab; }
.item.dragging { opacity: .4; }
.item.drop-before { box-shadow: 0 -3px 0 var(--brand); }
.item.drop-after { box-shadow: 0 3px 0 var(--brand); }
.card.drop-target { outline: 2px dashed var(--brand); outline-offset: -2px; }