:root{--bg:#f6f7f9;--card:#fff;--text:#15171c;--muted:#666d7a;--line:#e6e8ec;--accent:#15803d;color-scheme:light dark}
@media (prefers-color-scheme:dark){:root{--bg:#101114;--card:#181a1f;--text:#e9eaee;--muted:#9298a4;--line:#262930;--accent:#4ade80}}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;display:grid;place-items:center;background:var(--bg);color:var(--text);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Pretendard",system-ui,sans-serif}
main{width:100%;max-width:420px;margin:16px;padding:28px 24px;background:var(--card);border:1px solid var(--line);border-radius:14px}
.brand{margin:0 0 8px;color:var(--muted);font-size:.85rem;letter-spacing:.02em}
h1{margin:0 0 12px;font-size:1.35rem}
p{margin:0 0 12px;color:var(--muted);word-break:keep-all;overflow-wrap:anywhere}
.who b{color:var(--text)}
.btn{display:inline-block;padding:8px 14px;border:1px solid var(--line);border-radius:8px;color:var(--accent);text-decoration:none;font-weight:600}