:root {
  color-scheme: dark;
  --bg: #07100e;
  --panel: #101b18;
  --panel-2: #15231f;
  --border: #263a34;
  --text: #f2f5ed;
  --muted: #91a39d;
  --gold: #d6ad56;
  --green: #55c995;
  --red: #ef756f;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 15% 0%, rgba(214, 173, 86, .10), transparent 32rem),
    var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.shell { max-width: 1480px; margin: auto; padding: 28px; }
header, .card-heading, .header-actions {
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
}
header { margin-bottom: 24px; }
h1, h2, p { margin: 0; }
h1 { font-size: clamp(24px, 4vw, 38px); letter-spacing: -.03em; }
h2 { font-size: 18px; }
.eyebrow { color: var(--gold); font-size: 11px; font-weight: 700; letter-spacing: .16em; }
.muted { color: var(--muted); }
.hero-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 16px; }
.market-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 16px; }
.market-card strong { display: block; color: var(--gold); font: 600 25px/1.2 ui-monospace, monospace; margin: 10px 0 4px; }
.content-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; margin-top: 16px; }
.tables-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 16px 0; }
.card {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(21, 35, 31, .96), rgba(12, 23, 20, .96));
  box-shadow: 0 14px 38px rgba(0, 0, 0, .18);
  padding: 20px;
}
.quote-card { min-height: 170px; }
.price { display: block; margin: 20px 0 5px; color: var(--gold); font: 600 44px/1 ui-monospace, monospace; }
.metric { display: flex; min-height: 170px; flex-direction: column; justify-content: center; }
.metric span { color: var(--muted); }
.metric strong { margin-top: 10px; font: 600 34px/1 ui-monospace, monospace; }
.metric small { color: var(--muted); margin-top: 6px; }
.pill, .status {
  border: 1px solid var(--border); border-radius: 999px; padding: 5px 9px;
  font-size: 12px;
}
.healthy { color: var(--green); border-color: rgba(85, 201, 149, .45); }
.degraded, .failed { color: var(--red); border-color: rgba(239, 117, 111, .45); }
.warning { margin-top: 14px; border-left: 3px solid var(--gold); background: rgba(214, 173, 86, .1); padding: 8px 10px; color: #ead29f; }
.hidden { display: none !important; }
button {
  border: 1px solid var(--gold); border-radius: 8px; background: var(--gold);
  color: #191407; padding: 8px 12px; font: inherit; font-weight: 650; cursor: pointer;
}
button.secondary, .range-picker button {
  border-color: var(--border); background: transparent; color: var(--muted);
}
.range-picker button.active { color: var(--gold); border-color: var(--gold); }
.chart-card canvas { width: 100%; margin-top: 18px; }
.chart-frame { position: relative; }
.chart-tooltip {
  position: absolute; pointer-events: none; z-index: 5;
  border: 1px solid var(--gold); border-radius: 8px;
  background: rgba(9, 18, 15, .96); color: var(--text);
  padding: 8px 10px; font: 12px/1.5 ui-monospace, monospace;
  box-shadow: 0 8px 22px rgba(0, 0, 0, .4); transform: translate(-50%, -115%);
  white-space: nowrap;
}
.chart-tooltip strong { color: var(--gold); font-size: 14px; }
.chart-stats { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 14px; }
.chart-stats .stat { display: flex; flex-direction: column; }
.chart-stats .stat span { color: var(--muted); font-size: 11px; letter-spacing: .06em; }
.chart-stats .stat strong { font: 600 16px/1.3 ui-monospace, monospace; margin-top: 2px; }
.chart-stats .up { color: var(--green); }
.chart-stats .down { color: var(--red); }
.chart-granularity { margin-top: 8px; font-size: 12px; }
.ai-body { margin-top: 16px; display: grid; gap: 14px; }
.ai-headline { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.ai-headline .direction { font: 600 20px/1 ui-monospace, monospace; }
.ai-headline .direction.up { color: var(--green); }
.ai-headline .direction.down { color: var(--red); }
.ai-headline .direction.flat { color: var(--gold); }
.ai-range { color: var(--muted); font-family: ui-monospace, monospace; }
.ai-confidence { border: 1px solid var(--border); border-radius: 999px; padding: 3px 10px; font-size: 12px; color: var(--muted); }
.ai-section-title { color: var(--gold); font-size: 11px; font-weight: 700; letter-spacing: .12em; margin-bottom: 4px; }
.ai-text { color: var(--text); line-height: 1.7; }
.ai-list { margin: 0; padding-left: 18px; line-height: 1.7; }
.ai-list li { margin-bottom: 4px; }
.ai-advice { border-left: 3px solid var(--gold); background: rgba(214, 173, 86, .08); padding: 10px 12px; border-radius: 0 8px 8px 0; }
.ai-disclaimer { margin-top: 14px; color: var(--muted); font-size: 11px; line-height: 1.5; }
/* Segmented forecast timeline */
.seg-list { display: flex; flex-direction: column; gap: 6px; }
.seg-row { display: grid; grid-template-columns: 96px 150px 1fr; gap: 10px; align-items: center; padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px; background: rgba(9, 18, 15, .4); }
.seg-time { display: flex; flex-direction: column; }
.seg-label { color: var(--gold); font-size: 12px; font-weight: 650; }
.seg-date { color: var(--muted); font-size: 11px; font-family: ui-monospace, monospace; }
.seg-band { font: 600 13px/1.3 ui-monospace, monospace; display: flex; align-items: center; gap: 5px; }
.seg-band.up { color: var(--green); }
.seg-band.down { color: var(--red); }
.seg-band.flat { color: var(--gold); }
.seg-arrow { font-size: 11px; }
.seg-note { color: var(--muted); font-size: 12px; line-height: 1.4; }
@media (max-width: 560px) {
  .seg-row { grid-template-columns: 72px 1fr; }
  .seg-note { grid-column: 1 / -1; }
}
.ai-meta { color: var(--muted); font-size: 11px; }
.ai-refresh { border-color: var(--border); background: transparent; color: var(--muted); font-size: 12px; padding: 5px 10px; }
.ai-refresh:hover:not(:disabled) { color: var(--gold); border-color: var(--gold); }
.ai-refresh:disabled { opacity: .5; cursor: default; }
.market-card-head { display: flex; align-items: center; gap: 8px; }
.open-pill { color: var(--green); border-color: rgba(85, 201, 149, .45); font-size: 11px; padding: 2px 8px; }
.closed-pill { color: var(--muted); border-color: var(--border); font-size: 11px; padding: 2px 8px; }
.market-closed strong { color: var(--muted); }
.checkbox-row { flex-direction: row; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }
.checkbox-row input { width: auto; }
.skeleton { background: linear-gradient(90deg, rgba(38,58,52,.3) 25%, rgba(38,58,52,.55) 37%, rgba(38,58,52,.3) 63%); background-size: 400% 100%; animation: shimmer 1.4s ease infinite; border-radius: 8px; color: transparent !important; }
@keyframes shimmer { 0% { background-position: 100% 0; } 100% { background-position: 0 0; } }
dl { margin: 18px 0 0; }
dl div { display: flex; justify-content: space-between; border-bottom: 1px solid var(--border); padding: 13px 0; }
dt { color: var(--muted); } dd { margin: 0; font-family: ui-monospace, monospace; }
.table-wrap { overflow-x: auto; margin-top: 16px; }
table { width: 100%; border-collapse: collapse; }
th, td { border-bottom: 1px solid var(--border); padding: 11px 8px; text-align: left; white-space: nowrap; }
th { color: var(--muted); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
td { font-family: ui-monospace, monospace; }
.empty { padding: 80px 0; color: var(--muted); text-align: center; }
dialog {
  width: min(520px, calc(100% - 32px)); border: 1px solid var(--border); border-radius: 14px;
  background: var(--panel); color: var(--text); padding: 24px;
}
dialog::backdrop { background: rgba(0, 0, 0, .72); backdrop-filter: blur(5px); }
dialog form { display: grid; gap: 16px; }
label { color: var(--muted); display: grid; gap: 6px; }
input, select {
  width: 100%; border: 1px solid var(--border); border-radius: 8px;
  background: #09120f; color: var(--text); padding: 10px;
}
.form-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.error { color: var(--red); }

@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr 1fr; }
  .market-grid { grid-template-columns: 1fr 1fr; }
  .quote-card { grid-column: span 2; }
  .content-grid, .tables-grid { grid-template-columns: 1fr; }
  /* Header controls (品种下拉 + 时间段 + 刷新) wrap instead of overflowing. */
  .card-heading { flex-wrap: wrap; }
  .range-picker { flex-wrap: wrap; gap: 6px; }
  .chart-stats { gap: 12px; }
}
@media (max-width: 560px) {
  .shell { padding: 16px; }
  header { align-items: flex-start; flex-direction: column; gap: 12px; }
  .hero-grid { grid-template-columns: 1fr; }
  .market-grid { grid-template-columns: 1fr; }
  .quote-card { grid-column: auto; }
  .form-grid { grid-template-columns: 1fr; }
  /* Stack AI card header controls full-width for touch targets. */
  .range-picker { width: 100%; }
  .range-picker select { flex: 1 1 100%; }
  .range-picker button { flex: 1 1 auto; }
  .chart-stats { justify-content: space-between; }
  .chart-stats .stat { min-width: 30%; }
  .ai-headline { gap: 8px; }
  .price { font-size: 34px; }
  h1 { font-size: 26px; }
}