:root{--bg:#0b0d12;--panel:#141821;--text:#eef1f6;--muted:#9aa3b2;--line:#252b38;--accent:#4f8cff}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 -apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Hiragino Sans","Apple SD Gothic Neo","Segoe UI",Roboto,"Noto Sans",sans-serif}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
header.top{border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:600;font-size:18px}
.brand img{width:28px;height:27px}
nav a{color:var(--muted);margin-left:18px;font-size:15px}
nav a[aria-current]{color:var(--text)}
.hero{padding:72px 0 48px;text-align:center}
.hero img{width:96px;height:93px}
.hero h1{font-size:40px;line-height:1.15;margin:20px 0 12px;letter-spacing:-.02em}
.hero p{color:var(--muted);font-size:19px;margin:0 auto;max-width:620px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin:24px 0 56px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px}
.card h3{margin:0 0 6px;font-size:17px}
.card p{margin:0;color:var(--muted);font-size:15px}
main.doc{padding:40px 0 56px}
.doc h1{font-size:32px;margin:0 0 8px}
.doc h2{font-size:21px;margin:36px 0 8px}
.doc h3{font-size:17px;margin:24px 0 4px}
.doc p,.doc li{color:#d5dae3}
.doc .meta{color:var(--muted)}
.lang{border-top:1px solid var(--line);margin-top:48px;padding-top:8px}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:14px}
footer .wrap{padding:24px 20px;display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:space-between}
@media (max-width:520px){.hero h1{font-size:30px}.hero p{font-size:17px}nav a{margin-left:12px}}