:root {
  color-scheme: light;
  --ink: #1a1f2b;
  --muted: #5b6472;
  --line: #e4e7eb;
  --accent: #2563eb;
  --bg: #ffffff;
  --bg-soft: #f7f8fa;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg-soft);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

header {
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 20px 24px;
}

header .brand {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

header .brand strong { font-size: 1.05rem; }
header .brand span { color: var(--muted); font-size: 0.9rem; }

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 36px 24px 72px;
  background: var(--bg);
}

h1 {
  font-size: 1.6rem;
  margin: 0 0 4px;
}

.updated {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 28px;
}

h2 {
  font-size: 1.15rem;
  margin: 2em 0 0.6em;
  padding-top: 1em;
  border-top: 1px solid var(--line);
}

h2:first-of-type { border-top: none; padding-top: 0; margin-top: 1.5em; }

p, li { color: #2b313d; }

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 0.92rem;
}

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

th { background: var(--bg-soft); }

footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px;
  color: var(--muted);
  font-size: 0.85rem;
}