*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7;color:#1a1a1a;background:#fafafa}
a{color:#2563eb;text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:880px;margin:0 auto;padding:0 24px}
header{background:#fff;border-bottom:1px solid #eee;padding:16px 0;position:sticky;top:0;z-index:10}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.logo{font-size:20px;font-weight:600;color:#1a1a1a}
.logo-dot{display:inline-block;width:10px;height:10px;background:#2563eb;border-radius:50%;margin-right:8px;vertical-align:middle}
nav a{color:#666;margin-left:20px;font-size:14px}
nav a:hover{color:#2563eb;text-decoration:none}
main{padding:60px 0;min-height:60vh}
h1{font-size:32px;font-weight:700;margin-bottom:24px}
h2{font-size:24px;font-weight:600;margin-top:36px;margin-bottom:16px}
h3{font-size:18px;font-weight:600;margin-top:24px;margin-bottom:12px}
p{margin-bottom:16px;color:#333}
ul,ol{margin-bottom:16px;padding-left:24px;color:#333}
li{margin-bottom:8px}
.hero{text-align:center;padding:60px 0 40px}
.hero h1{font-size:40px}
.hero .lead{font-size:18px;color:#666;max-width:600px;margin:0 auto}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin:40px 0}
.feature-card{background:#fff;border:1px solid #eee;border-radius:12px;padding:24px}
.feature-card h3{margin-top:0;font-size:16px}
.feature-card p{font-size:14px;color:#666;margin-bottom:0}
footer{background:#1a1a1a;color:#999;padding:40px 0;font-size:13px;text-align:center}
footer a{color:#ccc}
footer .links a{margin:0 8px}
footer p{margin:8px 0;color:#999}
.icp{color:#777;font-size:12px;margin-top:16px}
.icp a{color:#777}
.beian{margin-top:16px;display:flex;gap:16px;justify-content:center;align-items:center;flex-wrap:wrap;font-size:12px;color:#999}
.beian a{color:#ccc;display:inline-flex;align-items:center;gap:4px}
.beian a:hover{color:#fff;text-decoration:none}
.beian img{vertical-align:middle}
@media(max-width:600px){.hero h1{font-size:28px}nav a{margin-left:12px;font-size:13px}h1{font-size:26px}.beian{gap:8px;font-size:11px}}