/* base.css */
:root{--primary:#1d4e89;--secondary:#38a3ff;--accent:#ff8a3d;--bg:#f7fbfe;--text:#0b2030;}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;font-family:system-ui,-apple-system,'Segoe UI',Roboto,Inter,Arial,sans-serif;color:var(--text);background:var(--bg)}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.header{position:fixed;top:0;left:0;right:0;background:#fff;border-bottom:1px solid rgba(11,27,43,0.06);z-index:50}
.header .inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.nav{display:flex;gap:16px;align-items:center}
.btn{padding:10px 16px;border-radius:10px;font-weight:600;text-decoration:none}
.btn-primary{background:linear-gradient(90deg,var(--primary),var(--secondary));color:#fff}
.hero{padding:120px 0 60px;display:grid;grid-template-columns:1fr 420px;gap:36px;align-items:center}
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.card{background:#fff;padding:20px;border-radius:12px;box-shadow:0 6px 16px rgba(11,27,43,0.06);}
.footer{padding:40px 0;background:#fff;border-top:1px solid rgba(11,27,43,0.06)} 
.section{padding:40px 0}
@media(max-width:900px){.hero{grid-template-columns:1fr;gap:24px;padding-top:110px}}