.site-nav{height:var(--nav-h);z-index:100;border-bottom:1px solid var(--border-subtle);-webkit-backdrop-filter:blur(16px);transition:all var(--t2);background:#080c14d9;position:fixed;top:0;left:0;right:0}.site-nav.scrolled{border-bottom-color:var(--border-normal);background:#080c14f7;box-shadow:0 4px 24px #0006}.nav-inner{max-width:var(--max-w);padding:0 var(--s5);justify-content:space-between;align-items:center;gap:var(--s5);height:100%;margin:0 auto;display:flex}.nav-logo{align-items:center;gap:var(--s2);transition:opacity var(--t1);flex-shrink:0;text-decoration:none;display:flex}.nav-logo:hover{opacity:.9}.nav-logo{color:var(--text-1);align-items:center;gap:var(--s2);transition:color var(--t1);flex-shrink:0;font-size:1.3rem;font-weight:800;text-decoration:none;display:flex}.nav-logo:hover{color:var(--text-1)}.nav-logo .dot{background:var(--cyan);width:8px;height:8px;box-shadow:0 0 12px var(--cyan);background:var(--cyan);width:8px;height:8px;box-shadow:0 0 12px var(--cyan);border-radius:50%}.nav-links{align-items:center;gap:var(--s1);flex:1;justify-content:center;list-style:none;display:flex}.nav-links a{color:var(--text-2);border-radius:var(--r1);transition:color var(--t1), background var(--t1);padding:.4rem .75rem;font-size:.875rem;font-weight:500;text-decoration:none}.nav-links a:hover{color:var(--text-1);background:#ffffff0d}.nav-links a.active{color:var(--cyan);background:var(--cyan-dim)}.nav-right{align-items:center;gap:var(--s3);flex-shrink:0;display:flex}.nav-hamburger{border:1px solid var(--border-normal);border-radius:var(--r1);cursor:pointer;width:36px;height:36px;transition:all var(--t1);background:0 0;flex-direction:column;justify-content:center;gap:5px;padding:8px;display:none}.nav-hamburger span{background:var(--text-2);width:100%;height:2px;transition:all var(--t2);border-radius:2px;display:block}.nav-hamburger.open span:first-child{transform:translateY(7px)rotate(45deg)}.nav-hamburger.open span:nth-child(2){opacity:0;transform:scaleX(0)}.nav-hamburger.open span:nth-child(3){transform:translateY(-7px)rotate(-45deg)}@media (width<=768px){.nav-hamburger{display:flex}.nav-links{top:var(--nav-h);border-bottom:1px solid var(--border-subtle);padding:var(--s4);gap:var(--s2);opacity:0;visibility:hidden;transition:all var(--t3);backdrop-filter:blur(16px);background:#080c14fa;flex-direction:column;justify-content:flex-start;align-items:flex-start;position:absolute;left:0;right:0;transform:translateY(-100%)}.nav-links.open{opacity:1;visibility:visible;transform:translateY(0)}.nav-links a{width:100%;padding:.6rem 1rem}}.lang-switcher{border:1px solid var(--border-normal);border-radius:var(--r1);background:#ffffff0d;align-items:center;gap:.5rem;padding:.4rem .6rem;display:flex}.lang-btn{color:var(--text-2);cursor:pointer;border-radius:var(--r0);transition:all var(--t1);letter-spacing:.05em;background:0 0;border:none;padding:.3rem .5rem;font-size:.75rem;font-weight:600}.lang-btn:hover{color:var(--text-1)}.lang-btn.active{color:var(--cyan);background:#00d4ff1a}.lang-sep{color:var(--border-normal);font-size:.85rem}