* {
     margin: 0;
     padding: 0;
     box-sizing: border-box;
 }

 body {
     font-family: 'Inter', sans-serif;
     background: #0f172a;
     color: #fff;
 }

 header {
     width: 100%;
     padding: 25px 8%;
     display: flex;
     justify-content: space-between;
     align-items: center;
 }

 header h1 {
     font-size: 1.8rem;
     font-weight: 700;
 }

 nav a {
     margin-left: 30px;
     text-decoration: none;
     color: #cbd5e1;
     font-weight: 400;
 }

 .hero {
     width: 100%;
     padding: 80px 8% 120px;
     display: flex;
     flex-direction: column;
     align-items: center;
     text-align: center;
 }

 .hero h2 {
     font-size: 3rem;
     font-weight: 700;
     margin-bottom: 20px;
     max-width: 800px;
 }

 .hero p {
     font-size: 1.2rem;
     color: #cbd5e1;
     max-width: 600px;
     margin-bottom: 40px;
 }

 .btn {
     padding: 14px 32px;
     background: #1e293b;
     border: 1px solid #334155;
     border-radius: 10px;
     color: #fff;
     font-size: 1rem;
     cursor: pointer;
     transition: .2s;
     text-decoration-line: none;
 }

 .btn:hover {
     background: #334155;
 }

 .cards {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
     gap: 25px;
     padding: 60px 8%;
 }

 .card {
     background: #1e293b;
     padding: 35px;
     border-radius: 16px;
     border: 1px solid #334155;
 }

 .card h3 {
     font-size: 1.4rem;
     margin-bottom: 12px;
 }

 .card p {
     color: #cbd5e1;
     line-height: 1.5;
 }

 footer {
     text-align: center;
     padding: 40px 0;
     color: #64748b;
 }