.ch30-wrap{max-width:1100px;margin:28px auto;padding:20px}.ch30-hero{background:linear-gradient(135deg,#0B1F3B,#007BFF);color:#fff;border-radius:24px;padding:28px}.ch30-grid,.ch30-role-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:18px 0}.ch30-card,.ch30-role-grid label{background:#fff;border:1px solid #e5eaf1;border-radius:16px;padding:16px;text-decoration:none;color:#0B1F3B;font-weight:700}.ch30-btn{background:#007BFF;color:#fff;border:0;border-radius:12px;padding:12px 18px}.ch30-mobile-nav{display:none}@media(max-width:800px){body{padding-bottom:74px}.ch30-mobile-nav{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);left:10px;right:10px;bottom:10px;z-index:9999;background:#0B1F3B;border-radius:18px;padding:10px;box-shadow:0 10px 30px rgba(0,0,0,.22)}.ch30-mobile-nav a{text-align:center;color:#fff;font-size:12px;text-decoration:none}.ch30-mobile-nav .ch30-ai{color:#FF7A00;font-weight:800}}