*{box-sizing:border-box;margin:0;padding:0}:root{--primary-color:#06c;--secondary-color:#ff6b35;--dark-color:#1a1a2e;--light-color:#f8f9fa;--text-color:#333;--border-radius:12px;--transition:all .3s ease}body{color:var(--text-color);font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;overflow-x:hidden}html{scroll-behavior:smooth}.container{margin:0 auto;max-width:1200px;padding:0 20px}.section{padding:80px 20px}.section-alt{background:var(--light-color)}.section-title{color:var(--dark-color);font-size:2.5rem;margin-bottom:1rem;text-align:center}.section-subtitle{color:#666;font-size:1.1rem;margin-bottom:3rem;text-align:center}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes slideDown{0%{opacity:0;transform:translateY(-50px)}to{opacity:1;transform:translateY(0)}}.success-message{background:#28a745}.error-message,.success-message{animation:fadeInUp .5s ease;border-radius:8px;color:#fff;margin-top:1rem;padding:1rem;text-align:center}.error-message{background:#dc3545}@media (max-width:768px){.section-title{font-size:2rem}}