:root{color-scheme:light dark;--bg:#071321;--card:#0b1829;--text:#eef4ff;--muted:#a9b7ca;--line:#243d5c;--accent:#2f78d8}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.65}main{max-width:880px;margin:0 auto;padding:48px 22px 72px}.brand{font-weight:800;letter-spacing:.08em;color:var(--accent);margin-bottom:8px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:30px;box-shadow:0 22px 60px rgba(0,0,0,.25)}h1{font-size:clamp(32px,6vw,48px);line-height:1.05;margin:0 0 10px}h2{font-size:21px;margin-top:30px}.meta,.note{color:var(--muted)}a{color:#75aaf1}ul{padding-left:22px}.footer{margin-top:30px;padding-top:20px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}code{word-break:break-word}@media(max-width:600px){main{padding:24px 14px 48px}.card{padding:22px}}