:root{--bg:#f7f9fc;--ink:#1c2430;--mut:#5b6675;--acc:#3b6fd8;--card:#fff;--line:#e2e8f0}
*{box-sizing:border-box}body{margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink)}
.wrap{max-width:720px;margin:0 auto;padding:0 20px}
.top{background:#fff;border-bottom:1px solid var(--line);padding:14px 0}.top .wrap{display:flex;align-items:center;gap:10px}
.logo{width:22px;height:22px;border-radius:50%;background:var(--acc);display:inline-block}
h1{font-size:2rem;margin:32px 0 8px}h2{font-size:1.25rem;margin:0 0 8px}.lead{color:var(--mut);font-size:1.1rem}
section{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;margin:20px 0}
a{color:var(--acc)}details{border-top:1px solid var(--line);padding:10px 0}details:first-of-type{border-top:0}
summary{cursor:pointer;font-weight:600}details p{margin:8px 0 0;color:var(--mut)}
.small{color:var(--mut);font-size:.9rem;margin:24px 0 40px}
ul{padding-left:20px;margin:8px 0}li{margin:6px 0}section p{margin:8px 0}