:root {
  --ink: #1a1a1a;
  --paper: #fafaf7;
  --rule: #d9d6cf;
  --accent: #2c4a3e;
  --muted: #5c5c5c;
  --link: #0b5cd5;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  text-align: left;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 36px 24px 80px;
}

header {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 18px;
  margin-bottom: 36px;
}

header .brand {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

header nav {
  margin-top: 8px;
  font-size: 14px;
  color: var(--muted);
}

header nav a {
  color: var(--muted);
  text-decoration: none;
  margin-right: 14px;
}

header nav a:hover { color: var(--link); text-decoration: underline; }

h1 {
  font-size: 32px;
  line-height: 1.15;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 40px 0 14px;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 22px 0 10px;
}

p {
  margin: 0 0 16px;
}

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

ul, ol {
  margin: 0 0 18px;
  padding-left: 24px;
}

li { margin-bottom: 8px; }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
  background: #f0ede7;
  padding: 2px 6px;
  border-radius: 4px;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin: 16px 0 24px;
  font-size: 15px;
}

th, td {
  border-bottom: 1px solid var(--rule);
  padding: 8px 10px;
  vertical-align: top;
  text-align: left;
}

th {
  font-weight: 600;
  color: var(--muted);
  background: rgba(0,0,0,0.02);
}

.muted { color: var(--muted); }
.last-updated { color: var(--muted); font-size: 14px; margin-top: -6px; margin-bottom: 24px; }

footer {
  margin-top: 48px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
  font-size: 14px;
  color: var(--muted);
}

footer a { color: var(--muted); margin-right: 14px; text-decoration: none; }
footer a:hover { color: var(--link); text-decoration: underline; }

@media (max-width: 600px) {
  .container { padding: 22px 18px 60px; }
  body { font-size: 17px; line-height: 1.7; }
  h1 { font-size: 28px; }
  h2 { font-size: 21px; margin-top: 36px; }
  table { font-size: 14px; }
}