.loading-page{position:fixed;top:0;left:0;width:100%;height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;z-index:9999;transition:opacity .5s ease}.loading-page.hide{opacity:0;pointer-events:none}.loading-container{text-align:center;color:#fff;padding:2rem}.spinner{width:50px;height:50px;margin:0 auto 1.5rem;border:4px solid rgba(255,255,255,.3);border-top:4px solid #fff;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-text{font-size:1.2rem;margin-top:1rem}.content-page{display:none;min-height:100vh;animation:fadeIn .5s ease}.content-page.show{display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:1rem 0;box-shadow:0 2px 10px #0000001a}.header-content{max-width:1200px;margin:0 auto;padding:0 1rem;display:flex;align-items:center;justify-content:space-between}.logo{font-size:1.5rem;font-weight:700;display:flex;align-items:center;gap:.5rem}.logo-icon{width:40px;height:40px;background:#fff3;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:1.5rem}.nav-btn{background:#fff3;border:none;color:#fff;padding:.6rem 1.2rem;border-radius:20px;cursor:pointer;font-size:.9rem;transition:all .3s ease}.nav-btn:hover{background:#ffffff4d;transform:translateY(-2px)}.banner{background:linear-gradient(135deg,#667eea1a,#764ba21a);padding:4rem 1rem;text-align:center}.banner-title{font-size:2rem;font-weight:700;margin-bottom:1rem;color:#333}.banner-subtitle{font-size:1.1rem;color:#666;line-height:1.8;max-width:600px;margin:0 auto}.features{max-width:1200px;margin:3rem auto;padding:0 1rem}.features-title{text-align:center;font-size:1.8rem;margin-bottom:2rem;color:#333}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem}.feature-card{background:#fff;border-radius:12px;padding:2rem;text-align:center;box-shadow:0 4px 15px #00000014;transition:all .3s ease}.feature-card:hover{transform:translateY(-5px);box-shadow:0 8px 25px #0000001f}.feature-icon{width:60px;height:60px;margin:0 auto 1rem;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2rem}.feature-title{font-size:1.2rem;font-weight:600;margin-bottom:.5rem;color:#333}.feature-desc{color:#666;line-height:1.6;font-size:.95rem}.footer{background:#2c3e50;color:#ecf0f1;padding:2rem 1rem;text-align:center;margin-top:4rem}.footer-text{margin-bottom:.5rem}.footer-links{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-top:1rem}.footer-link{color:#ecf0f1;text-decoration:none;font-size:.9rem;transition:color .3s ease}.footer-link:hover{color:#667eea}@media (max-width: 768px){.banner-title{font-size:1.5rem}.banner-subtitle{font-size:1rem}.features-title{font-size:1.5rem}.logo{font-size:1.2rem}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:#f5f5f5;color:#333;line-height:1.6}button{font-family:inherit}a{text-decoration:none}