*{box-sizing:border-box}body{margin:0;font:16px/1.6 system-ui,Segoe UI,Roboto,sans-serif;color:#1f2937;background:#fff}
.wrap{max-width:1000px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid #e5e7eb;background:#fff}header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:700;font-size:22px;color:#0f4c81;text-decoration:none}nav a{margin-left:22px;color:#374151;text-decoration:none}nav a:hover{color:#0f4c81}
.hero{padding:70px 0 50px}.hero h1{font-size:40px;margin:0 0 14px;color:#0f4c81}.hero p{font-size:19px;max-width:640px;color:#4b5563}
.btn{display:inline-block;margin-top:18px;padding:12px 24px;background:#0f4c81;color:#fff;border-radius:6px;text-decoration:none}.btn:hover{background:#0b3a63}
section{padding:36px 0}h2{font-size:28px;margin:0 0 18px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}article{border:1px solid #e5e7eb;border-radius:8px;padding:18px}article h3{margin:0 0 8px;font-size:18px}article p{margin:0;color:#4b5563}
footer{border-top:1px solid #e5e7eb;padding:22px 0;color:#6b7280;font-size:14px;margin-top:40px}