:root {
  --bg: #0f1419;
  --panel: #1a2129;
  --panel-2: #222b35;
  --border: #2c3744;
  --text: #e6edf3;
  --muted: #8b98a5;
  --accent: #4cc2ff;
  --good: #3fb950;
  --warn: #d29922;
  --bad: #f85149;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", Segoe UI, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 10;
}
header h1 { font-size: 18px; margin: 0; }
.meta { display: flex; align-items: center; gap: 14px; color: var(--muted); font-size: 13px; }
.model-pick { color: var(--text); display: flex; align-items: center; gap: 6px; }

button {
  background: var(--accent); color: #062b3a; border: none;
  padding: 6px 14px; border-radius: 6px; font-weight: 600; cursor: pointer;
}
button:hover { filter: brightness(1.1); }

select {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 5px 10px; font-size: 14px;
}

main { padding: 18px 24px; max-width: 1280px; margin: 0 auto; }
.unit { color: var(--muted); font-size: 12px; margin: 0 0 16px; }
.section-title { font-size: 14px; color: var(--muted); margin: 4px 0 10px; font-weight: 600; }

.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px 18px; margin-bottom: 20px;
}
.card h2 { font-size: 15px; margin: 0 0 14px; }

a.site-link { color: var(--accent); text-decoration: none; }
a.site-link:hover { text-decoration: underline; }

/* 汇总卡片 */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}
.summary-card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px 14px;
}
.summary-card.top { border-color: var(--good); box-shadow: 0 0 0 1px var(--good) inset; }
.sc-site { font-size: 13px; margin-bottom: 6px; }
.sc-price { font-size: 24px; font-weight: 700; font-variant-numeric: tabular-nums; }
.summary-card.top .sc-price { color: var(--good); }
.sc-chan { font-size: 11px; color: var(--muted); margin-top: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 图表 */
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 860px) { .grid { grid-template-columns: 1fr; } }
canvas { max-height: 340px; }

/* 表格 */
.table-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 12px; }
.table-head h2 { margin: 0; }
.table-wrap { overflow-x: auto; max-height: 520px; overflow-y: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 7px 10px; text-align: left; white-space: nowrap; }
thead th {
  color: var(--muted); font-weight: 600; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--panel); z-index: 1;
}
th.num, td.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr { border-bottom: 1px solid var(--panel-2); }
tbody tr:hover { background: var(--panel-2); }
td.desc { white-space: normal; color: var(--muted); max-width: 340px; font-size: 12px; }
.rank { color: var(--muted); }
.best td.num.actual { color: var(--good); font-weight: 700; }

/* 异动 / 涨跌 */
.muted { color: var(--muted); }
.up { color: var(--bad); font-weight: 600; }
.down { color: var(--good); font-weight: 600; }
.badge { display: inline-block; padding: 1px 7px; border-radius: 10px; font-size: 11px; font-weight: 600; }
.badge.new { background: rgba(76,194,255,.18); color: var(--accent); }
.badge.removed { background: rgba(248,81,73,.18); color: var(--bad); }
.card.alert { border-color: var(--warn); }
#alert-list { margin: 0; padding-left: 18px; }
#alert-list li { font-size: 13px; margin: 5px 0; }

footer {
  text-align: center; color: var(--muted); font-size: 12px;
  padding: 20px; border-top: 1px solid var(--border);
}