:root {
  --bg: #0c0d10;
  --panel: #16181e;
  --ink: #ece7dc;
  --muted: #9a937f;
  --line: #2a2d36;
  --acid: #d6ff3d;
  --acid-ink: #12140a;
  --warn: #ff6b4a;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); }
body {
  font-family: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  min-height: 100vh;
  line-height: 1.5;
}
a { color: var(--acid); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px 64px; }
header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 0 28px; border-bottom: 1px solid var(--line); margin-bottom: 28px;
}
.brand { font-weight: 800; letter-spacing: -.03em; font-size: 20px; color: var(--ink); }
.brand span { color: var(--acid); }
nav { display: flex; gap: 16px; font-size: 14px; }
nav a { color: var(--muted); }
nav a:hover, nav a.on { color: var(--ink); text-decoration: none; }
h1 { font-size: 36px; letter-spacing: -.04em; margin: 0 0 8px; }
.lede { color: var(--muted); max-width: 62ch; margin: 0 0 28px; }
.grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px;
}
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 16px;
  padding: 18px; min-height: 180px; display: flex; flex-direction: column;
}
.card h2 { margin: 0 0 8px; font-size: 20px; }
.card p { margin: 0 0 16px; color: var(--muted); flex: 1; font-size: 14px; }
.btn {
  display: inline-block; background: var(--acid); color: var(--acid-ink);
  font-weight: 700; border-radius: 999px; padding: 8px 14px; text-decoration: none;
}
.btn:hover { text-decoration: none; filter: brightness(1.05); }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.stage {
  background: #090a0c; border: 1px solid var(--line); border-radius: 16px;
  padding: 12px; display: grid; place-items: center; overflow: hidden;
}
canvas, .board { touch-action: none; max-width: 100%; }
.hud {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
  margin: 12px 0 16px; color: var(--muted); font-size: 14px;
}
.hud b { color: var(--ink); }
.note { color: var(--muted); font-size: 14px; max-width: 70ch; }
footer { margin-top: 48px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.legal { max-width: 72ch; }
.legal h1 { font-size: 28px; }
.legal p, .legal li { color: var(--muted); }
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: var(--panel); border: 1px solid var(--line); padding: 10px 14px;
  border-radius: 10px; display: none;
}
@media (max-width: 640px) {
  h1 { font-size: 28px; }
  header { flex-wrap: wrap; gap: 10px; }
}