:root {
  --bg: #ffffff;
  --fg: #1a1d21;
  --muted: #5b6470;
  --line: #e3e6ea;
  --soft: #f5f6f8;
  --link: #1d4ed8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #e8eaed;
    --muted: #9aa3ae;
    --line: #2c3138;
    --soft: #1d2026;
    --link: #8ab4ff;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
header, main, footer { max-width: 720px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
header a { color: var(--fg); font-weight: 700; font-size: 18px; text-decoration: none; }
main { padding-top: 24px; padding-bottom: 48px; }
a { color: var(--link); }
h1 { font-size: 26px; line-height: 1.35; margin: 8px 0 20px; }
h2 { font-size: 20px; line-height: 1.4; margin: 40px 0 12px; padding-top: 8px; scroll-margin-top: 12px; }
h3 { font-size: 17px; margin: 28px 0 8px; }
p, ul, ol { margin: 0 0 14px; }
ul, ol { padding-left: 22px; }
li { margin-bottom: 4px; }
code { background: var(--soft); border-radius: 4px; padding: 1px 6px; font-family: inherit; font-size: 0.95em; }
.toc { background: var(--soft); border-radius: 12px; padding: 16px 18px; margin-bottom: 8px; font-size: 15px; }
.toc ol { margin: 8px 0 0; }
.table-wrap { overflow-x: auto; margin: 0 0 16px; -webkit-overflow-scrolling: touch; }
table { border-collapse: collapse; width: 100%; min-width: 480px; font-size: 15px; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: var(--soft); font-weight: 600; }
.hero { padding: 56px 0 40px; }
.hero h1 { font-size: 34px; margin-bottom: 8px; }
.tagline { font-size: 18px; color: var(--muted); }
.badge { display: inline-block; background: var(--soft); border: 1px solid var(--line); border-radius: 999px; padding: 4px 14px; font-size: 14px; }
footer { border-top: 1px solid var(--line); padding-top: 20px; padding-bottom: 40px; color: var(--muted); font-size: 13px; line-height: 1.7; }
footer p { margin: 0; }
footer nav { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-bottom: 10px; font-size: 14px; }
footer a { color: var(--muted); }