:root{--bg:#fafaf7;--fg:#1d1d1f;--muted:#5f6368;--accent:#c4302b;--line:#e3e3de}
@media (prefers-color-scheme:dark){:root{--bg:#161617;--fg:#f1f1ee;--muted:#a8abb0;--accent:#ff5a4f;--line:#2d2d30}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR",sans-serif}
main{max-width:760px;margin:0 auto;padding:40px 16px 64px}h1{font-size:28px;margin:0 0 4px}h2{font-size:19px;margin:32px 0 8px}
.sub{color:var(--muted);margin:0 0 24px}nav{display:flex;gap:16px;flex-wrap:wrap;padding:12px 0;border-bottom:1px solid var(--line);margin-bottom:24px}
a{color:var(--accent)}.yt{display:inline-block;padding:2px 8px;border:1px solid var(--line);border-radius:6px;font-size:13px;color:var(--muted)}
footer{margin-top:48px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}ul{padding-left:20px}