:root {
  --bg: #f6f5f2;
  --card: #ffffff;
  --ink: #1b1b1f;
  --muted: #6b6b75;
  --line: #e3e1db;
  --accent: #2f5bea;
  --up: #1f9d55;
  --down: #d64545;
  --s1: #d64545;
  --s2: #ec8c5a;
  --s3: #a0a0aa;
  --s4: #6fb98a;
  --s5: #1f9d55;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121216;
    --card: #1c1c22;
    --ink: #f1f1f4;
    --muted: #9a9aa6;
    --line: #2c2c35;
    --accent: #7b9bff;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
}
h2 {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
}
button { font: inherit; color: inherit; cursor: pointer; }
.muted { color: var(--muted); }