:root {
  --bg: #f6f8fb;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --accent: #2563eb;
  --up: #e11d48;
  --down: #059669;
  --badge-bg: #eef2ff;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0f16;
    --card: #121a24;
    --text: #e6edf6;
    --muted: #93a3b8;
    --line: #1e2b3a;
    --accent: #60a5fa;
    --badge-bg: #16243a;
    --shadow: 0 1px 2px rgba(0, 0, 0, .5), 0 10px 30px rgba(0, 0, 0, .35);
  }
}

body.green-up { --up: #059669; --down: #e11d48; }

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Roboto, sans-serif;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 18px clamp(16px, 4vw, 40px) 8px;
}
.topbar h1 { font-size: clamp(17px, 2.2vw, 22px); margin: 0; letter-spacing: .01em; }

.controls { display: flex; align-items: center; gap: 10px; }
.conn { font-size: 12px; color: var(--muted); }
.conn.warn { color: #b45309; }

.toggle {
  font: inherit; font-size: 12px; padding: 6px 10px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--card); color: var(--text); cursor: pointer;
}
.toggle:hover { border-color: var(--accent); }

.grid {
  display: grid; gap: 14px; padding: 10px clamp(16px, 4vw, 40px) 24px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
@media (max-width: 1100px) { .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 14px 14px 10px; box-shadow: var(--shadow); min-width: 0;
  display: flex; flex-direction: column; gap: 8px;
}

.card-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.card-head h2 { font-size: 14px; margin: 0; font-weight: 600; }
.card-head .code { font-size: 11px; color: var(--muted); margin-left: 6px; font-weight: 400; }

.badge {
  font-size: 11px; padding: 2px 7px; border-radius: 999px;
  background: var(--badge-bg); color: var(--accent); white-space: nowrap;
}
.badge.closed { color: var(--muted); background: transparent; border: 1px solid var(--line); }
.badge.stale, .badge.error { color: #b45309; background: #fef3c7; }
@media (prefers-color-scheme: dark) {
  .badge.stale, .badge.error { color: #fbbf24; background: #2a2110; }
}

.price { font-size: clamp(22px, 2.6vw, 30px); font-weight: 650; line-height: 1.1; }
.price.na { font-size: 16px; color: var(--muted); font-weight: 500; }
.delta { font-size: 13px; font-weight: 600; }
.up { color: var(--up); }
.down { color: var(--down); }
.flat { color: var(--muted); }

.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; margin: 0; }
.stats div { min-width: 0; }
.stats dt { font-size: 10px; color: var(--muted); margin: 0 0 1px; }
.stats dd { font-size: 12px; margin: 0; }

.chart { height: 96px; margin: 2px -4px 0; }

.meta { display: flex; flex-direction: column; gap: 2px; font-size: 10px; color: var(--muted); }
.meta a { color: var(--accent); text-decoration: none; }
.meta a:hover { text-decoration: underline; }

.foot {
  padding: 4px clamp(16px, 4vw, 40px) 34px; color: var(--muted); font-size: 11px; line-height: 1.7;
}
.foot p { margin: 0; }