:root {
  --bg: #0f1419;
  --panel: #1a222c;
  --border: #2a3542;
  --text: #e6edf3;
  --dim: #8b949e;
  --up: #3fb950;
  --down: #f85149;
  --accent: #58a6ff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "Noto Sans TC", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}
header h1 { margin: 0 0 .2rem; font-size: 1.5rem; }
.sub { color: var(--dim); margin: 0 0 1rem; }
.controls {
  display: flex; gap: 1rem; align-items: center; flex-wrap: wrap;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: .8rem 1rem; margin-bottom: 1rem;
}
.controls label { display: flex; flex-direction: column; font-size: .8rem; color: var(--dim); gap: .25rem; }
select, button {
  background: var(--bg); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: .4rem .6rem; font-size: .95rem;
}
button { cursor: pointer; }
button:hover { border-color: var(--accent); }
.status { margin-left: auto; color: var(--dim); font-size: .85rem; }
.meta { display: flex; gap: 1.2rem; flex-wrap: wrap; color: var(--dim); font-size: .85rem; margin-bottom: .6rem; }
.meta strong { color: var(--text); }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: .5rem .6rem; border-bottom: 1px solid var(--border); }
th { color: var(--dim); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.sym { font-weight: 700; color: var(--accent); }
.score { font-weight: 700; }
.up { color: var(--up); }
.down { color: var(--down); }
.dim { color: var(--dim); }
.tag { display: inline-block; padding: .1rem .45rem; border-radius: 999px; font-size: .72rem; margin-right: .25rem; }
.tag.surge { background: rgba(248,81,73,.15); color: var(--down); }
.tag.rev { background: rgba(88,166,255,.15); color: var(--accent); }
.reasons { color: var(--dim); font-size: .82rem; }
.empty, .loading { color: var(--dim); padding: 1.5rem 0; text-align: center; }
.err { color: var(--down); background: rgba(248,81,73,.1); padding: .6rem .8rem; border-radius: 6px; }
footer { margin-top: 2rem; color: var(--dim); font-size: .8rem; border-top: 1px solid var(--border); padding-top: 1rem; }

@media (prefers-color-scheme: light) {
  :root { --bg: #ffffff; --panel: #f6f8fa; --border: #d0d7de; --text: #1f2328; --dim: #656d76; }
}