.app-header{position:fixed;inset:0 0 auto;z-index:1000;height:var(--header-height);display:flex;align-items:center;padding:0 clamp(18px,4vw,56px);color:#fff;background:rgba(4,11,25,.74);border-bottom:1px solid hsla(0,0%,100%,.08);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);transition:background .22s var(--ease),box-shadow .22s var(--ease)}.app-header.scrolled{background:rgba(4,11,25,.94);box-shadow:0 10px 34px rgba(0,0,0,.18)}.header-content{width:min(100%,var(--max-width));margin:0 auto;display:flex;align-items:center;justify-content:space-between}.brand-link{display:inline-flex;align-items:center;height:58px}.header-logo{width:clamp(170px,16vw,228px);height:auto;object-fit:contain;filter:saturate(1.08) brightness(1.16);transition:opacity .18s ease}.brand-link:hover .header-logo{opacity:.84}.nav-links{display:flex;align-items:center;gap:32px}.nav-link{position:relative;padding:9px 0;color:hsla(0,0%,100%,.74);font-size:.88rem;font-weight:650;letter-spacing:.01em;transition:color .18s ease}.nav-link:after{content:"";position:absolute;inset:auto 0 2px;height:2px;border-radius:99px;background:linear-gradient(90deg,var(--primary),var(--cyan));transform:scaleX(0);transform-origin:left;transition:transform .18s ease}.nav-link.active,.nav-link:hover{color:#fff}.nav-link.active:after,.nav-link:hover:after{transform:scaleX(1)}.header-cta{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 21px;border-radius:999px;background:linear-gradient(120deg,#1388ff,#16d9f3);color:#03101e;font-size:.85rem;font-weight:800;box-shadow:0 10px 30px rgba(0,171,255,.22);transition:transform .18s ease,box-shadow .18s ease}.header-cta:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(0,191,255,.34)}.menu-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;flex-direction:column;gap:6px;border:1px solid hsla(0,0%,100%,.12);border-radius:12px;background:hsla(0,0%,100%,.06);z-index:1002}.menu-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:#fff;transition:transform .18s ease}.menu-toggle.active span:first-child{transform:translateY(4px) rotate(45deg)}.menu-toggle.active span:last-child{transform:translateY(-4px) rotate(-45deg)}.menu-overlay{position:fixed;inset:0;z-index:998;border:0;background:rgba(1,5,14,.66);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}@media (max-width:760px){.menu-toggle{display:flex}.nav-links{position:fixed;top:0;right:-100%;z-index:1001;width:min(340px,88vw);height:100dvh;padding:120px 28px 36px;flex-direction:column;align-items:stretch;gap:12px;background:#071222;border-left:1px solid hsla(0,0%,100%,.08);transition:right .24s var(--ease)}.nav-links.open{right:0}.nav-link{padding:14px 6px;font-size:1.05rem}.header-cta{margin-top:14px}}