:root {
  --bg: #131318;
  --surface: #1c1c23;
  --text: #e7e4dc;
  --text-dim: #8d8a93;
  --max-width: 1280px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.55;
}

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 16px 64px;
}

h1 {
  font-size: 1.5rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin: 0 0 4px;
}

.subtitle {
  color: var(--text-dim);
  font-size: 0.92rem;
  margin: 0 0 20px;
}

#canvas-container {
  background: var(--surface);
  border-radius: 6px;
  overflow: hidden;
  line-height: 0;
}

#canvas-container canvas {
  width: 100%;
  height: auto;
  display: block;
  cursor: crosshair;
  touch-action: none;
}

.hints {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  margin-top: 14px;
  margin-bottom: 16px;
  color: var(--text-dim);
  font-size: 0.85rem;
  font-family: ui-monospace, 'Cascadia Code', Consolas, monospace;
}

.hints kbd {
  color: var(--text);
  background: var(--surface);
  border: 1px solid #2e2e38;
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 0 6px;
  font-family: inherit;
}

footer {
  margin-top: 28px;
  color: var(--text-dim);
  font-size: 0.85rem;
}

footer a {
  color: var(--text);
}