:root {
  --bg: #ffffff; --fg: #1a1a1a; --muted: #5f6368; --accent: #2f6fed; --line: #e6e8eb; --card: #f6f7f9;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1115; --fg: #e8eaed; --muted: #9aa0a6; --accent: #7aa2ff; --line: #262a31; --card: #171a20; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
header.top a.brand { font-weight: 700; text-decoration: none; color: var(--fg); font-size: 18px; }
header.top nav a { color: var(--muted); text-decoration: none; margin-left: 14px; font-size: 14px; }
header.top nav a:hover { color: var(--accent); }
h1 { font-size: 28px; line-height: 1.25; margin: 0 0 6px; }
h2 { font-size: 20px; margin: 36px 0 10px; padding-top: 8px; border-top: 1px solid var(--line); }
h3 { font-size: 16px; margin: 20px 0 6px; }
p, li { color: var(--fg); }
.meta { color: var(--muted); font-size: 14px; margin: 0 0 24px; }
a { color: var(--accent); }
table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin: 16px 0; }
ul.links { list-style: none; padding: 0; }
ul.links li { padding: 10px 0; border-bottom: 1px solid var(--line); }
ul.links a { font-weight: 600; text-decoration: none; }
ul.links small { display: block; color: var(--muted); }
footer { margin-top: 48px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); padding-top: 16px; }
.btn { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; padding: 12px 20px; border-radius: 10px; font-weight: 600; }
.center { text-align: center; }