:root{color-scheme:dark;--bg:#16181d;--fg:#e6e8ec;--mute:#9aa1ad;--accent:#6ea8fe;--card:#1f232b}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 "Segoe UI","Malgun Gothic",system-ui,sans-serif}
main{max-width:760px;margin:0 auto;padding:48px 24px 64px}
a{color:var(--accent)}
h1{font-size:2rem;margin:0 0 4px}
h2{font-size:1.2rem;margin:2rem 0 .5rem}
.sub{color:var(--mute);margin:0 0 1.5rem}
.card{background:var(--card);border-radius:12px;padding:16px 20px;margin:1rem 0}
.ko{color:var(--mute);font-size:.95rem}
nav{display:flex;gap:18px;margin-bottom:2rem;font-size:.95rem}
footer{margin-top:3rem;color:var(--mute);font-size:.85rem;border-top:1px solid #2a2f38;padding-top:1rem}
code{background:#2a2f38;padding:1px 6px;border-radius:4px;font-size:.9em}
li{margin:.25rem 0}