:root{color-scheme:light;--ink:#172033;--muted:#5f6b7a;--line:#dfe5ec;--bg:#f6f8fb;--card:#fff;--accent:#d99a00;--link:#0b5bd3}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,Helvetica,sans-serif;line-height:1.65}.wrap{max-width:980px;margin:0 auto;padding:32px 18px 70px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:34px;box-shadow:0 10px 30px rgba(23,32,51,.06)}h1{font-size:clamp(30px,5vw,48px);line-height:1.08;margin:0 0 12px}h2{margin-top:34px;padding-top:8px;border-top:1px solid var(--line)}h3{margin-top:24px}.meta{color:var(--muted);font-size:15px}.notice{border-left:5px solid var(--accent);background:#fff8df;padding:16px 18px;border-radius:10px;margin:22px 0}.placeholder{background:#fff0f0;color:#8b1d1d;padding:2px 6px;border-radius:5px;font-weight:700}a{color:var(--link)}nav{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 18px}nav a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 14px;text-decoration:none}.footer{color:var(--muted);font-size:14px;margin-top:26px}ul{padding-left:22px}@media(max-width:640px){.card{padding:22px 18px;border-radius:14px}.wrap{padding:16px 10px 50px}}