:root{--bg:#F6F7F4;--card:#fff;--text:#1C1F1D;--muted:#5F6862;--accent:#1F9D55;--line:#E3E7E2}
@media (prefers-color-scheme:dark){:root{--bg:#0B0D0C;--card:#141816;--text:#E8EDEA;--muted:#93A098;--accent:#3DDC84;--line:#26302B}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.7 -apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue",sans-serif}
main{max-width:720px;margin:0 auto;padding:32px 20px 64px}
header{display:flex;align-items:center;gap:14px;margin-bottom:28px}
header img{width:56px;height:56px;border-radius:13px}
header h1{font-size:22px;margin:0}header p{margin:2px 0 0;color:var(--muted);font-size:14px}
section{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px 22px;margin:16px 0}
h2{font-size:17px;margin:0 0 8px}p,li{color:var(--text)}ul{padding-left:20px;margin:8px 0}
.muted{color:var(--muted);font-size:14px}a{color:var(--accent)}
footer{margin-top:32px;color:var(--muted);font-size:13px;text-align:center}

nav{max-width:720px;margin:0 auto;padding:16px 20px 0;display:flex;gap:18px;font-size:14px}
nav a{color:var(--muted);text-decoration:none}nav a:hover{color:var(--accent)}
.hero{text-align:center;padding:40px 0 8px}.hero img{width:96px;height:96px;border-radius:22px;box-shadow:0 8px 24px rgba(0,0,0,.12)}
.hero h1{font-size:32px;margin:18px 0 4px}.hero .slogan{color:var(--muted);font-size:16px;margin:0 0 22px}
.btn{display:inline-block;background:var(--accent);color:#fff;border-radius:12px;padding:12px 22px;font-weight:600;text-decoration:none}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin:24px 0}
.grid section{margin:0}.grid h2{font-size:16px}.grid p{margin:0;color:var(--muted);font-size:14px}
ol{padding-left:22px}ol li{margin:4px 0}