html,body{margin:0;height:100%;font-family:Montserrat,sans-serif;color:#fff}.bg{position:fixed;inset:0;background:url(images/groupe.png) center/cover no-repeat;filter:brightness(.28);animation:zoom 18s alternate infinite}.veil{position:fixed;inset:0;background:radial-gradient(circle at top,transparent,#000 80%)}main{position:relative;z-index:2;display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:100%;padding:24px}.logo{width:170px}.logo,img{filter:drop-shadow(0 8px 25px #000)}h1{font-size:56px;margin:10px 0}p{opacity:.9}nav{display:grid;gap:16px;width:min(420px,95%);margin-top:20px}a{text-decoration:none;color:#fff;text-align:center;padding:18px;border-radius:18px;background:rgba(255,255,255,.12);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.25);transition:.3s}a:hover{transform:translateY(-4px);background:rgba(255,255,255,.2)}@keyframes zoom{to{transform:scale(1.08)}}