*{margin:0;padding:0;box-sizing:border-box}
body{background:#f5f7fb;color:#1a2138;font-family:"PingFang SC","Microsoft YaHei",sans-serif;font-size:14px}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
header{background:#fff;box-shadow:0 1px 0 #e8ecf2;padding:18px 0;position:sticky;top:0;z-index:9}
.logo{font-size:22px;font-weight:600;color:#1a2138}
.logo i{color:#22c993;font-style:normal}
nav{float:right;margin-top:4px}
nav a{color:#475569;margin-left:28px;text-decoration:none;font-size:14px;font-weight:500}
nav a:hover{color:#22c993}
.hero{background:#fff;padding:70px 0;text-align:center;border-bottom:1px solid #e8ecf2}
.hero h1{font-size:36px;color:#0f172a;margin-bottom:14px;font-weight:700}
.hero p{color:#64748b;font-size:16px;margin-bottom:28px}
.btn{display:inline-block;padding:12px 28px;background:#22c993;color:#fff;border-radius:8px;text-decoration:none;font-weight:500;margin:4px}
.btn-line{background:#fff;color:#22c993;border:1px solid #22c993}
.sec{padding:60px 0}
.sec h2{font-size:26px;color:#0f172a;margin-bottom:30px;text-align:center;font-weight:600}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:#fff;border-radius:12px;padding:28px 22px;box-shadow:0 2px 8px rgba(15,23,42,.05)}
.card h3{color:#0f172a;font-size:17px;margin-bottom:10px}
.card p{color:#64748b;line-height:1.7;font-size:13px}
.ic{width:42px;height:42px;background:#e9f9f1;color:#22c993;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:14px}
footer{background:#0f172a;color:#94a3b8;padding:40px 0;text-align:center;margin-top:40px;font-size:13px}
.crumb{padding:18px 0;color:#94a3b8;font-size:12px}
.crumb a{color:#475569;text-decoration:none}