:root { color-scheme: dark; }
* { box-sizing: border-box; }
body {
  margin: 0; padding: 2rem; max-width: 960px; margin-inline: auto;
  font: 15px/1.5 system-ui, sans-serif; background: #0d1117; color: #c9d1d9;
}
header h1 { margin: 0; font-size: 2.2rem; letter-spacing: 0.1em; color: #5cf; }
.sub { color: #8b949e; max-width: 60ch; }
.cite { color: #6e7681; font-size: 0.85rem; max-width: 60ch; margin-top: 0.25rem; }
.cite a { color: #5cf; }
.panel { background: #161b22; border: 1px solid #30363d; border-radius: 8px;
  padding: 1rem 1.25rem; margin: 1rem 0; }
.panel h2 { margin: 0 0 0.75rem; font-size: 1rem; color: #9ab; text-transform: uppercase;
  letter-spacing: 0.08em; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 0.25rem 1rem; margin: 0; }
dt { color: #8b949e; } dd { margin: 0; font-variant-numeric: tabular-nums; }
.ok { color: #3fb950; } .bad { color: #f85149; font-weight: 700; }
.controls label { display: block; margin: 0.5rem 0; }
.controls input[type=range] { vertical-align: middle; }
.buttons { margin: 0.75rem 0; display: flex; gap: 0.5rem; }
button { background: #238636; color: #fff; border: 0; border-radius: 6px;
  padding: 0.5rem 1rem; font: inherit; cursor: pointer; }
button:disabled { opacity: 0.4; cursor: default; }
button.danger { background: #6e2630; }
.warn { color: #d29922; min-height: 1.2em; margin: 0.25rem 0; }
.status { color: #8b949e; font-family: monospace; }
canvas { width: 100%; height: auto; background: #0a0e14; border: 1px solid #30363d;
  border-radius: 6px; display: block; }
.stats { display: flex; flex-wrap: wrap; gap: 1.25rem; margin-top: 0.75rem;
  font-variant-numeric: tabular-nums; }
.stats .k { display: block; color: #8b949e; font-size: 0.8rem; text-transform: uppercase; }
.stats div span:last-child { font-size: 1.1rem; color: #c9d1d9; }
.hint { color: #8b949e; font-size: 0.9rem; }
.dump { display: flex; gap: 1rem; flex-wrap: wrap; align-items: flex-start; margin-top: 0.5rem; }
.hex { flex: 1 1 460px; min-width: 0; overflow-x: auto; margin: 0;
  background: #0a0e14; border: 1px solid #30363d; border-radius: 6px; padding: 0.75rem;
  font: 12px/1.45 ui-monospace, SFMono-Regular, monospace; color: #9fb4d0; }
.swatchwrap { margin: 0; text-align: center; }
.swatch { width: 160px; height: 160px; image-rendering: pixelated;
  background: #0a0e14; border: 1px solid #30363d; border-radius: 6px; display: block; }
.swatchwrap figcaption { color: #8b949e; font-size: 0.75rem; margin-top: 0.35rem; }
.fpsites { display: flex; flex-direction: column; gap: 0.4rem; margin: 0.5rem 0; }
.fprow { display: flex; align-items: center; gap: 0.75rem; }
.fprow button { background: #1f6feb; }
.fpticks { color: #8b949e; font-family: ui-monospace, monospace; font-size: 0.85rem; }
.fpresults { display: flex; flex-direction: column; gap: 0.35rem; margin-top: 0.75rem; }
.fpbar { display: grid; grid-template-columns: 7rem 1fr 3rem; align-items: center; gap: 0.5rem; }
.fpbar .fplabel { color: #8b949e; }
.fpbar.top .fplabel { color: #c9d1d9; font-weight: 700; }
.fptrack { background: #0a0e14; border: 1px solid #30363d; border-radius: 4px; height: 14px; overflow: hidden; }
.fpfill { display: block; height: 100%; background: #5cf; }
.fpbar.top .fpfill { background: #3fb950; }
.fpscore { color: #9ab; font-variant-numeric: tabular-nums; font-size: 0.85rem; text-align: right; }