:root{--brand:#008F98;--ink:#181819;--muted:#5b6b66;--line:#e3eae8;--bg:#f6f9f8}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--brand)}
.site-head{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;max-width:900px;margin:0 auto;padding:18px 20px;border-bottom:1px solid var(--line)}
.brand{font-weight:700;font-size:20px;letter-spacing:.08em;color:var(--brand);text-decoration:none}
.site-head nav{display:flex;flex-wrap:wrap;gap:16px;font-size:15px}
.site-head nav a{text-decoration:none}
main{max-width:900px;margin:0 auto;padding:28px 20px 8px}
.home{text-align:left}
.home .logo{width:190px;max-width:70%;height:auto;display:block;margin:8px 0 18px}
h1{font-size:28px;line-height:1.25;margin:8px 0 12px}
h2{font-size:20px;margin:28px 0 10px}
h3{font-size:17px;margin:22px 0 8px}
.lead{font-size:18px;color:var(--muted);margin:0 0 22px}
.cards{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin:18px 0 6px}
.card{display:block;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;text-decoration:none;color:inherit}
.card b{display:block;margin-bottom:4px;color:var(--brand)}
.card span{color:var(--muted);font-size:14px}
.card:hover{border-color:var(--brand)}
.doc p{margin:10px 0}
.doc ul{margin:10px 0 10px 22px;padding:0}
.doc li{margin:4px 0}
.doc blockquote{margin:12px 0;padding:8px 14px;border-left:3px solid var(--brand);background:#fff;color:var(--muted)}
.doc code{background:#eef4f3;padding:1px 5px;border-radius:5px;font-size:14px}
.site-foot{max-width:900px;margin:36px auto 0;padding:18px 20px 32px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
@media(max-width:520px){h1{font-size:23px}.lead{font-size:16px}}