:root {
  color-scheme: light dark;
  --bg: #0b0d10;
  --fg: #f0f2f5;
  --muted: rgba(240, 242, 245, 0.7);
  --ember: #fb5b28;
  --line: rgba(255, 255, 255, 0.1);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6
    "SF Pro Text",
    -apple-system,
    BlinkMacSystemFont,
    "Inter",
    "Segoe UI",
    Roboto,
    sans-serif;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 56px 24px 96px;
}

h1 {
  font-size: 40px;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

h2 {
  font-size: 22px;
  letter-spacing: -0.01em;
  margin: 40px 0 10px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

h2:first-of-type {
  border-top: none;
  padding-top: 0;
}

h3 {
  font-size: 17px;
  margin: 24px 0 8px;
}

p,
li {
  color: var(--fg);
}

.lede {
  color: var(--muted);
  font-size: 17px;
  margin: 0 0 28px;
}

.links {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 32px 0 48px;
}

.links a {
  color: var(--ember);
  font-weight: 600;
  font-size: 18px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  width: fit-content;
}

.links a:hover {
  border-color: var(--ember);
}

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

ul {
  padding-left: 22px;
}

li {
  margin: 6px 0;
}

code {
  background: rgba(255, 255, 255, 0.07);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.92em;
}

hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 32px 0;
}

.foot {
  margin-top: 64px;
  color: var(--muted);
  font-size: 13px;
}

.toc {
  margin: 16px 0 32px;
  padding: 16px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.toc a {
  color: var(--fg);
  display: block;
  padding: 2px 0;
}

.toc a:hover {
  color: var(--ember);
}

.back {
  display: inline-block;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 24px;
  font-size: 14px;
}

.back:hover {
  color: var(--ember);
}

.back::before {
  content: "← ";
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --fg: #111418;
    --muted: rgba(17, 20, 24, 0.65);
    --line: rgba(17, 20, 24, 0.12);
  }
  code {
    background: rgba(17, 20, 24, 0.06);
  }
  .toc {
    background: rgba(17, 20, 24, 0.04);
  }
}