:root {
  color-scheme: light;
  --bg-1: #fbf6eb;
  --bg-2: #e7f0ff;
  --ink: #1d2433;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255, 177, 122, 0.55), transparent 28%),
    radial-gradient(circle at bottom right, rgba(69, 167, 255, 0.32), transparent 30%),
    linear-gradient(145deg, var(--bg-1), var(--bg-2));
}

.app-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.canvas-wrap {
  width: min(100%, 980px);
}

canvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 28px;
  box-shadow:
    0 18px 60px rgba(36, 60, 93, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
}