:root {
  --bg: #ffffff;
  --text: #1c1c1e;
  --muted: #6c6c70;
  --line: #e5e5ea;
  --soft: #f5f5f7;
  --link: #0a66d6;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --text: #f2f2f7;
    --muted: #a1a1a6;
    --line: #2c2c2e;
    --soft: #1c1c1e;
    --link: #5aa2ff;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Segoe UI", Roboto, sans-serif;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
a { color: var(--link); }
.wrap { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header.top { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 32px; }
header.top .brand { font-weight: 700; font-size: 18px; color: var(--text); text-decoration: none; }
header.top nav a { font-size: 14px; margin-left: 12px; }
h1 { font-size: 28px; line-height: 1.3; margin: 0 0 8px; }
h2 { font-size: 19px; line-height: 1.4; margin: 40px 0 12px; padding-top: 8px; border-top: 1px solid var(--line); }
h3 { font-size: 16px; margin: 20px 0 8px; }
p, ul, ol { margin: 0 0 12px; }
li { margin-bottom: 4px; }
.meta { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.note { background: var(--soft); border-radius: 12px; padding: 16px; margin: 16px 0 24px; }
.note p:last-child { margin-bottom: 0; }
.toc { background: var(--soft); border-radius: 12px; padding: 16px 16px 8px 36px; font-size: 15px; }
.table { overflow-x: auto; margin: 0 0 16px; -webkit-overflow-scrolling: touch; }
table { border-collapse: collapse; width: 100%; font-size: 14px; line-height: 1.55; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; overflow-wrap: break-word; }
th { background: var(--soft); font-weight: 600; }
.table table { min-width: 600px; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.home h1 { font-size: 40px; margin-top: 48px; }
.home .lead { font-size: 18px; color: var(--muted); margin-bottom: 32px; }