:root {
  --bg: #fbfaf8;
  --surface: #ffffff;
  --text: #1d1b22;
  --muted: #5d5868;
  --line: #e6e2ea;
  --accent: #6a4bd8;
  --accent-ink: #ffffff;
  --todo-bg: #fff4cc;
  --todo-text: #6b4e00;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131118;
    --surface: #1b1822;
    --text: #ece9f2;
    --muted: #a7a1b3;
    --line: #2d2937;
    --accent: #a48bff;
    --accent-ink: #131118;
    --todo-bg: #4a3a00;
    --todo-text: #ffe58a;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

header.site {
  border-bottom: 1px solid var(--line);
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}

.brand {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 18px;
  font-size: 15px;
}

nav a:hover,
nav a[aria-current="page"] {
  color: var(--text);
}

main {
  padding: 48px 0 72px;
}

h1 {
  font-size: clamp(30px, 6vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}

h2 {
  font-size: 22px;
  margin: 40px 0 8px;
}

h3 {
  font-size: 18px;
  margin: 24px 0 4px;
}

.lead {
  font-size: 20px;
  color: var(--muted);
  margin: 0 0 32px;
}

.updated {
  color: var(--muted);
  font-size: 15px;
  margin: 0 0 32px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px 22px;
  margin: 24px 0;
}

.card p:first-child {
  margin-top: 0;
}

.card p:last-child {
  margin-bottom: 0;
}

/* Values the owner must supply before publishing. Deliberately loud. */
.todo {
  background: var(--todo-bg);
  color: var(--todo-text);
  border-radius: 4px;
  padding: 0 4px;
  font-weight: 600;
}

footer.site {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  padding: 24px 0 40px;
}

footer.site a {
  color: var(--muted);
  margin-right: 14px;
}

@media (max-width: 480px) {
  nav a {
    margin-left: 12px;
  }
}