.l1s-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(250,250,252,0.8);backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,223,230,0.5)}.l1s-header-container{max-width:1200px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between}.l1s-header-logo{display:flex;align-items:center;gap:12px}.l1s-header-logo img{height:48px;width:48px}.l1s-header-title{font-size:20px;font-weight:700;color:hsl(220,15%,12%);margin:0}.l1s-header-subtitle{font-size:12px;color:hsl(220,9%,46%);margin:0}.l1s-header-nav{display:flex;align-items:center;gap:24px}.l1s-header-nav a{font-size:14px;font-weight:500;color:hsl(220,15%,12%);text-decoration:none;transition:color 0.3s}.l1s-header-nav a:hover{color:hsl(217,91%,60%)}.l1s-btn-cosmic{background:linear-gradient(135deg,hsl(217,91%,60%),hsl(185,84%,45%));color:white;padding:8px 16px;border-radius:8px;border:none;font-size:14px;font-weight:600;cursor:pointer;text-decoration:none;display:inline-block;transition:transform 0.2s,box-shadow 0.3s}.l1s-btn-cosmic:hover{transform:translateY(-2px);box-shadow:0 0 40px hsl(217,91%,60%,0.3)}@media (max-width:768px){.l1s-header-nav{display:none}}