:root {
  --bg: #0b0f14;
  --panel: #121821;
  --panel2: #0e141d;
  --border: #1e2a3a;
  --text: #e8eef7;
  --muted: #8b9bb4;
  --up: #f6465d;
  --down: #0ecb81;
  --flat: #8b9bb4;
  --accent: #3b82f6;
  --star: #f5c542;
  --cheap: rgba(14, 203, 129, 0.18);
  --cheap-border: #0ecb81;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.top { border-bottom: 1px solid var(--border); background: var(--panel2); }
.top-inner { max-width: 1400px; margin: 0 auto; padding: 1rem 1rem 1.1rem; }
.back { font-size: .9rem; color: var(--muted); }
h1 { margin: .35rem 0; font-size: 1.45rem; font-weight: 700; }
.sub { margin: 0; color: var(--muted); font-size: .92rem; }
.up { color: var(--up); font-weight: 600; }
.down { color: var(--down); font-weight: 600; }
.meta-line { margin-top: .5rem; display: flex; flex-wrap: wrap; gap: 1rem; font-size: .85rem; color: var(--muted); }
.basis-note {
  margin-top: .65rem;
  padding: .55rem .75rem;
  background: rgba(59,130,246,.1);
  border: 1px solid rgba(59,130,246,.35);
  border-radius: 8px;
  font-size: .82rem;
  color: var(--muted);
}
.basis-note strong { color: var(--text); }
.wrap { max-width: 1400px; margin: 0 auto; padding: .75rem 1rem 2.5rem; }
.toolbar { display: flex; flex-direction: column; gap: .55rem; margin-bottom: .75rem; }
.tabs { display: flex; flex-wrap: wrap; gap: .35rem; }
.tabs button {
  background: var(--panel); color: var(--text); border: 1px solid var(--border);
  border-radius: 999px; padding: .4rem .9rem; cursor: pointer; font-size: .9rem;
}
.tabs button.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.tabs button .n { opacity: .75; font-size: .78rem; margin-left: .25rem; }
.tab-summary {
  margin: 0; padding: .45rem .7rem; background: var(--panel);
  border: 1px solid var(--border); border-radius: 8px;
  font-size: .88rem; color: var(--muted);
}
.tab-summary strong { color: var(--text); }
.filters { display: flex; flex-wrap: wrap; gap: .45rem; align-items: center; }
.filters input[type=search], .filters select {
  background: var(--panel); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: .4rem .55rem; font-size: .88rem;
}
.filters input[type=search] { min-width: min(100%, 200px); flex: 1; }
.filt { font-size: .8rem; color: var(--muted); display: flex; align-items: center; gap: .3rem; }
.chk { font-size: .88rem; color: var(--muted); display: flex; align-items: center; gap: .3rem; }

.matrix {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
}
.matrix table {
  width: 100%;
  border-collapse: collapse;
  font-size: .84rem;
  min-width: 960px;
}
.matrix th, .matrix td {
  padding: .45rem .5rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}
.matrix th {
  color: var(--muted); font-weight: 600; background: var(--panel2);
  position: sticky; top: 0; z-index: 2;
}
.matrix th.plat { text-align: right; min-width: 4.5rem; }
.matrix .num { text-align: right; font-variant-numeric: tabular-nums; }
.matrix tr.vendor-row td {
  background: #152033;
  font-weight: 700;
  font-size: .92rem;
  padding: .55rem .65rem;
  border-bottom: 1px solid #2a3b55;
  position: sticky; left: 0;
}
.matrix tr.series-row td {
  background: #101824;
  color: var(--muted);
  font-size: .8rem;
  font-weight: 600;
  padding: .35rem .65rem;
}
.matrix tbody tr.data:hover td { background: rgba(59,130,246,.08); cursor: pointer; }
.matrix .sticky-name {
  position: sticky; left: 0; background: var(--panel); z-index: 1;
  min-width: 11rem; max-width: 16rem; white-space: normal;
}
.matrix thead .sticky-name { z-index: 3; background: var(--panel2); }
.star-btn {
  background: none; border: 0; color: var(--muted); cursor: pointer;
  font-size: 1.05rem; line-height: 1; padding: 0 .2rem;
}
.star-btn.on { color: var(--star); }
.model-name { font-weight: 600; }
.spec-label { color: var(--muted); font-size: .78rem; margin-top: .1rem; }
.cell {
  text-align: right; font-variant-numeric: tabular-nums;
  font-weight: 500; color: var(--text);
}
.cell.empty { color: #3a4a5e; }
.cell.cheap {
  background: var(--cheap);
  color: #b6ffe0;
  font-weight: 700;
  box-shadow: inset 0 0 0 1px var(--cheap-border);
  border-radius: 4px;
}
.cell[title] { cursor: help; }
.chg-up { color: var(--up); }
.chg-down { color: var(--down); }
.chg-flat { color: var(--flat); }
.loading, .empty { text-align: center; color: var(--muted); padding: 2rem !important; }
.hint { color: var(--muted); font-size: .8rem; margin-top: .75rem; }

.drawer {
  position: fixed; inset: 0; background: rgba(0,0,0,.55); z-index: 40;
  display: flex; justify-content: flex-end;
}
.drawer[hidden] { display: none !important; }
.drawer-panel {
  width: min(520px, 100%); height: 100%; background: var(--panel);
  border-left: 1px solid var(--border); padding: 1rem 1.1rem 2rem; overflow-y: auto;
  position: relative;
}
.close {
  position: absolute; right: .6rem; top: .4rem; background: none; border: 0;
  color: var(--muted); font-size: 1.6rem; cursor: pointer;
}
.drawer h2 { margin: .2rem 2rem .3rem 0; font-size: 1.15rem; }
.muted { color: var(--muted); font-size: .85rem; }
#chart {
  width: 100%; height: auto; background: #0b0f14; border-radius: 8px;
  border: 1px solid var(--border); margin: .6rem 0 1rem;
}
.plat-table { width: 100%; border-collapse: collapse; font-size: .85rem; }
.plat-table th, .plat-table td { padding: .4rem .35rem; border-bottom: 1px solid var(--border); }
.plat-table .num { text-align: right; font-variant-numeric: tabular-nums; }

.cards { display: none; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  padding: .75rem .85rem; margin-bottom: .55rem;
}
.card-head {
  display: grid; grid-template-columns: 2rem 1fr auto; gap: .35rem .55rem; align-items: start;
  cursor: pointer;
}
.card .model-name { font-size: .95rem; word-break: break-word; }
.card .spec-label { margin-top: .15rem; }
.card .right { text-align: right; white-space: nowrap; }
.card .price { font-size: 1.05rem; font-weight: 700; display: block; }
.card .plat-line { font-size: .78rem; color: var(--muted); margin-top: .15rem; }
.card details { margin-top: .55rem; }
.card summary {
  cursor: pointer; color: var(--accent); font-size: .85rem; user-select: none;
}
.card .plat-list { margin: .4rem 0 0; padding: 0; list-style: none; font-size: .82rem; }
.card .plat-list li {
  display: flex; justify-content: space-between; gap: .5rem;
  padding: .28rem 0; border-bottom: 1px solid var(--border);
}
.card .plat-list li.cheap span:last-child { color: #b6ffe0; font-weight: 700; }
.vendor-block-title {
  margin: 1rem 0 .4rem; font-size: .95rem; font-weight: 700;
  color: var(--text); padding-left: .2rem;
}
.vendor-block-title:first-child { margin-top: .25rem; }

@media (max-width: 640px) {
  h1 { font-size: 1.2rem; }
  .matrix { display: none; }
  .cards { display: block; }
  .filt select#platFilter { max-width: 7rem; }
  .drawer { background: var(--bg); }
  .drawer-panel { width: 100%; border-left: 0; padding-top: 2.4rem; }
  .close {
    position: fixed; right: .75rem; top: .55rem; z-index: 50;
    background: var(--panel); border: 1px solid var(--border);
    border-radius: 999px; width: 2.2rem; height: 2.2rem;
    line-height: 1; font-size: 1.4rem;
  }
}

.plat-filt { display: flex; align-items: center; gap: .3rem; }
.filt-label { font-size: .8rem; color: var(--muted, #667085); }
.plat-dd { position: relative; display: inline-block; }
.plat-dd-btn {
  font: inherit; font-size: .8rem; padding: .25rem .55rem;
  border: 1px solid var(--border, #d0d5dd); border-radius: 6px;
  background: var(--card, #fff); color: var(--text, #101828);
  cursor: pointer; min-width: 7.5rem; text-align: left;
}
.plat-dd-btn:hover { border-color: #98a2b3; }
.plat-dd-panel {
  position: absolute; z-index: 40; top: calc(100% + 4px); left: 0;
  min-width: 10rem; max-height: 14rem; overflow: auto;
  background: var(--card, #fff); border: 1px solid var(--border, #d0d5dd);
  border-radius: 8px; box-shadow: 0 8px 24px rgba(16,24,40,.12);
  padding: .35rem;
}
.plat-dd-panel label {
  display: flex; align-items: center; gap: .4rem;
  padding: .28rem .4rem; border-radius: 4px; cursor: pointer;
  font-size: .8rem; color: var(--text, #101828); white-space: nowrap;
}
.plat-dd-panel label:hover { background: #f2f4f7; }