body{font-family:'Poppins',sans-serif;background:#f3f4f6;color:#fff;margin:0;overflow-x:hidden}header{background:linear-gradient(120deg,#0d6efd,#003580);color:#fff;padding:100px 0;text-align:center;position:relative;overflow:hidden}header::before{content:"";position:absolute;background:url(https://www.transparenttextures.com/patterns/graph-paper.png);top:0;left:0;width:100%;height:100%;opacity:.15}header h1{font-weight:700;font-size:3rem;position:relative}header p{font-size:1.2rem;margin-top:15px;position:relative}section.certificate{padding:100px 0;position:relative;text-align:left}section:nth-of-type(1){background:linear-gradient(120deg,#1d2671,#c33764)}section:nth-of-type(2){background:linear-gradient(120deg,#11998e,#38ef7d)}section:nth-of-type(3){background:linear-gradient(120deg,#ff416c,#ff4b2b)}.glass-card{background:rgb(255 255 255 / .1);backdrop-filter:blur(10px);border-radius:18px;padding:30px;color:#fff;box-shadow:0 10px 30px rgb(0 0 0 / .2)}.cert-img{width:100%;border-radius:18px;box-shadow:0 12px 30px rgb(0 0 0 / .3);transition:all 0.4s ease}.cert-img:hover{transform:scale(1.04)}.cert-title{font-weight:700;font-size:2rem;margin-bottom:15px}.btn-premium{background:#fff;color:#000;border:none;padding:12px 30px;border-radius:50px;font-weight:600;transition:all 0.3s ease;box-shadow:0 6px 15px rgb(255 255 255 / .3)}.btn-premium:hover{background:#000;color:#fff;transform:translateY(-3px);box-shadow:0 8px 20px rgb(0 0 0 / .4)}footer{background:#0d1b2a;color:#adb5bd;padding:25px;text-align:center;font-size:.9rem}