:root{--bg:#fafafa;--fg:#111;--muted:#666;--border:#e0e0e0;--accent:#2563eb;--accent-light:#dbeafe;--card-bg:#fff;--radius:8px;--max-width:720px;--nav-height:56px}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px}body{font-family:-apple-system,BlinkMacSystemFont,Apple SD Gothic Neo,Noto Sans KR,Malgun Gothic,sans-serif;background:var(--bg);color:var(--fg);line-height:1.7;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.nav{position:-webkit-sticky;position:sticky;top:0;z-index:100;background:var(--card-bg);border-bottom:1px solid var(--border);height:var(--nav-height)}.nav-inner{max-width:var(--max-width);margin:0 auto;padding:0 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