*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #4a90d9;--secondary-color: #2c3e50;--accent-color: #e74c3c;--light-color: #ecf0f1;--dark-color: #1a1a2e;--text-color: #333}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:var(--text-color);background-color:#f5f5f5}header{background:var(--secondary-color);padding:1rem 2rem;position:fixed;width:100%;top:0;z-index:1000}nav{display:flex;justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto}.logo{color:#fff;font-size:1.5rem;font-weight:700}.nav-links{display:flex;list-style:none;gap:2rem}.nav-links a{color:#fff;text-decoration:none;transition:color .3s}.nav-links a:hover{color:var(--primary-color)}main{padding-top:60px}.hero{background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;text-align:center;padding:6rem 2rem;min-height:60vh;display:flex;flex-direction:column;justify-content:center;align-items:center}.hero h1{font-size:2.5rem;margin-bottom:1rem}.hero p{font-size:1.2rem;margin-bottom:2rem;opacity:.9}.btn{background:var(--accent-color);color:#fff;border:none;padding:.8rem 2rem;font-size:1rem;border-radius:5px;cursor:pointer;transition:transform .3s,box-shadow .3s}.btn:hover{transform:translateY(-2px);box-shadow:0 4px 15px #0003}.about{padding:4rem 2rem;max-width:1200px;margin:0 auto;text-align:center}.about h2{font-size:2rem;margin-bottom:2rem;color:var(--secondary-color)}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;margin-top:2rem;cursor:pointer}.card{background:#fff;padding:2rem;border-radius:10px;box-shadow:0 4px 6px #0000001a;transition:transform .3s}.card:hover{transform:translateY(-5px)}.card h3{color:var(--primary-color);margin-bottom:1rem}footer{background:var(--dark-color);color:#fff;text-align:center;padding:1.5rem}@media(max-width:768px){.hero h1{font-size:1.8rem}.nav-links{gap:1rem}.nav-links a{font-size:.9rem}}