.header{position:sticky;top:0;z-index:20;background:rgba(3,7,18,.84);backdrop-filter:blur(18px);border-bottom:1px solid rgba(62,239,255,.13)}.nav{height:86px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:14px;text-decoration:none;color:var(--text)}.brand img{width:56px;height:56px;border-radius:16px;object-fit:cover}.brand strong{font-size:27px;letter-spacing:.22em;font-weight:900}.brand strong span{color:var(--blue)}.brand small{display:block;color:var(--muted);font-size:10px;letter-spacing:.22em;text-transform:uppercase}.nav-links{display:flex;gap:26px;align-items:center}.nav-links a{color:#b8c9e6;text-decoration:none;font-size:13px;text-transform:uppercase;font-weight:900;letter-spacing:.08em}.nav-links a:hover{color:var(--cyan)}.menu-btn{display:none;background:none;border:1px solid rgba(62,239,255,.3);color:white;border-radius:10px;font-size:22px;padding:7px 12px}