:root {
  color-scheme: light;
  --ink: #0d1117;
  --muted: rgba(13, 17, 23, 0.6);
  --accent: #ff784f;
  --panel: rgba(255, 255, 255, 0.9);
  --border: rgba(13, 17, 23, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top right, #ffe7db, transparent 55%),
    radial-gradient(circle at 20% 40%, #d7f2ff, transparent 45%),
    #f7f3ed;
}

.layout {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(360px, 1.3fr);
  gap: clamp(24px, 4vw, 56px);
  padding: clamp(32px, 5vw, 72px);
  min-height: 100vh;
}

.intro {
  align-self: center;
}

.eyebrow {
  font-family: "IBM Plex Mono", monospace;
  letter-spacing: 0.2rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  margin-bottom: 12px;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 3.6vw, 3.2rem);
}

.lead {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.meta {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.meta-label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12rem;
  color: var(--muted);
}

.meta-value {
  font-weight: 600;
}

.note {
  margin-top: 24px;
  font-size: 0.9rem;
  color: var(--muted);
}

.stage {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 28px;
  overflow: hidden;
  min-height: 420px;
  box-shadow: 0 32px 80px rgba(13, 17, 23, 0.16);
}

canvas {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

.fallback {
  position: absolute;
  inset: 0;
  padding: 32px;
  display: grid;
  place-content: center;
  text-align: center;
  background: rgba(255, 255, 255, 0.9);
  z-index: 2;
}

.hidden {
  display: none;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .stage {
    min-height: 320px;
  }
}