:root {
  --canvas: #0b0e14;
  --panel: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.1);
  --ink: #f3f6fa;
  --ink-dim: #8d96a6;
  --node: #6ee7b7;
  --edge: #8b5cf6;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --canvas: #f4f5f8;
    --panel: rgba(0, 0, 0, 0.03);
    --border: rgba(0, 0, 0, 0.1);
    --ink: #14171f;
    --ink-dim: #5b6373;
    --node: #059669;
    --edge: #7c3aed;
    color-scheme: light;
  }
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  /* The gradients live here so they cover the viewport even on short pages,
     instead of ending where the content does. */
  background:
    radial-gradient(120% 90% at 15% -10%, rgba(139, 92, 246, 0.16), transparent 55%),
    radial-gradient(90% 70% at 100% 110%, rgba(110, 231, 183, 0.1), transparent 60%),
    var(--canvas);
  background-attachment: fixed;
}

body {
  margin: 0;
  min-height: 100vh;
  padding: 48px 20px 56px;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(120% 90% at 15% -10%, rgba(139, 92, 246, 0.16), transparent 55%),
    radial-gradient(90% 70% at 100% 110%, rgba(110, 231, 183, 0.1), transparent 60%),
    transparent;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

main {
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  /* Pushes the footer to the bottom on short pages, so the rule above it
     never floats mid-screen with empty space beneath. */
  flex: 1;
  display: flex;
  flex-direction: column;
}

header.site {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 40px;
}

header.site .mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  display: block;
}

header.site a {
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  text-decoration: none;
}

h1 {
  font-size: 30px;
  line-height: 1.2;
  margin: 0 0 8px;
}

h2 {
  font-size: 18px;
  margin: 32px 0 8px;
}

.lede {
  color: var(--ink-dim);
  font-size: 18px;
  margin-top: 0;
}

.updated {
  color: var(--ink-dim);
  font-size: 13px;
  margin-top: 0;
}

a {
  color: var(--node);
}

ul {
  padding-left: 20px;
}

li {
  margin: 6px 0;
}

.card {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 12px;
  padding: 18px 20px;
  margin: 24px 0;
}

kbd {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13px;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 1px 6px;
}

nav.foot {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
  color: var(--ink-dim);
}