body{font-family:Arial,Helvetica,sans-serif;background:#fff;color:#111;margin:0;padding:20px}
header{border-bottom:1px solid #eee;padding-bottom:10px;margin-bottom:10px}
.controls{margin:10px 0;display:flex;gap:10px}
.controls input{padding:8px;flex:1;border:1px solid #ccc;border-radius:4px}
.controls select{padding:8px;border-radius:4px}
.mentors{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.card{border:1px solid #e6e6e6;padding:12px;border-radius:6px;background:#fafafa}
.gate{max-width:400px;margin:80px auto;text-align:center;border:1px dashed #ccc;padding:20px;border-radius:8px}