body{font-family: Arial; background: linear-gradient(135deg, #667eea, #764ba2); margin:0;} .container{max-width:1200px;margin:0 auto;padding:20px;} .card{background:rgba(255,255,255,0.95);border-radius:15px;padding:30px;margin:20px 0;} .nav-link{color:#333;text-decoration:none;margin:0 15px;}