:root {
  color-scheme: light;
  --ink: #20242a;
  --muted: #5b6470;
  --line: #d9dee7;
  --paper: #ffffff;
  --bg: #f4f6f8;
  --accent: #174a7c;
}

* {
  box-sizing: border-box;
}

body {
  max-width: 1040px;
  margin: 0 auto;
  padding: 44px 24px 72px;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  min-height: 100vh;
}

main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 44px 24px 72px;
  background: var(--paper);
  min-height: 100vh;
}

h1 {
  font-size: 2.2rem;
  line-height: 1.15;
  margin: 0 0 8px;
  letter-spacing: 0;
}

h2 {
  font-size: 1.1rem;
  margin: 34px 0 14px;
  color: var(--accent);
  border-bottom: 1px solid var(--line);
  padding-bottom: 6px;
  letter-spacing: 0;
}

p {
  margin: 0 0 10px;
}

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

ul {
  padding-left: 1.2rem;
}

li {
  margin-bottom: 0.55rem;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 18px 0 30px;
  padding-bottom: 18px;
  border-bottom: 2px solid var(--ink);
}

nav a {
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
}

@media (max-width: 640px) {
  body {
    padding: 30px 18px 54px;
  }
}