.nav{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-h);transition:background var(--t-base),border-color var(--t-base)}.nav.scrolled{background:rgba(255,255,255,.85);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border-bottom:1px solid var(--border)}.nav-inner{display:flex;align-items:center;gap:var(--s4);height:100%}.nav-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}.nav-logo-mark{display:block;flex-shrink:0}.nav-wordmark{font-size:19px;font-weight:800;color:var(--text);letter-spacing:-.03em}.nav-wordmark .dot{color:var(--g2)}.nav-links{display:flex;align-items:center;gap:var(--s3);flex:1;justify-content:center}.nav-link{font-size:14px;font-weight:500;color:var(--text2);transition:color var(--t-fast);position:relative;padding-block:4px}.nav-link.active,.nav-link:hover{color:var(--text)}.nav-link.active::after{content:'';position:absolute;bottom:-2px;left:0;right:0;height:2px;background:var(--g2);border-radius:1px}.nav-actions{display:flex;align-items:center;gap:var(--s2);flex-shrink:0}.btn-nav-secondary{font-size:14px;font-weight:500;color:var(--text2);transition:color var(--t-fast)}.btn-nav-secondary:hover{color:var(--text)}.nav-hamburger{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:10px;margin-left:auto}.nav-hamburger span{display:block;height:2px;background:var(--text2);border-radius:1px;transition:all var(--t-base)}.nav-hamburger[aria-expanded=true] span:first-child{transform:translateY(7px) rotate(45deg)}.nav-hamburger[aria-expanded=true] span:nth-child(2){opacity:0}.nav-hamburger[aria-expanded=true] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.nav-mobile{display:none;position:fixed;top:var(--nav-h);left:0;right:0;background:var(--bg1);border-bottom:1px solid var(--border);padding:var(--s3) var(--gutter) calc(var(--s3) + env(safe-area-inset-bottom));flex-direction:column;gap:var(--s2);max-height:calc(100dvh - var(--nav-h));overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;z-index:999}.nav-mobile.open{display:flex}.nav-mobile-link{font-size:16px;font-weight:500;color:var(--text2);padding-block:var(--s1);transition:color var(--t-fast)}.nav-mobile-link:hover{color:var(--text)}.nav-has-dropdown{position:relative}.nav-dropdown-toggle{font-size:14px;font-weight:500;color:var(--text2);transition:color var(--t-fast);display:flex;align-items:center;gap:4px;padding-block:4px;cursor:pointer;background:0 0;border:none}.nav-dropdown-toggle svg{transition:transform var(--t-fast)}.nav-has-dropdown:focus-within .nav-dropdown-toggle,.nav-has-dropdown:hover .nav-dropdown-toggle{color:var(--text)}.nav-has-dropdown:focus-within .nav-dropdown-toggle svg,.nav-has-dropdown:hover .nav-dropdown-toggle svg{transform:rotate(180deg)}.nav-dropdown{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(-6px);min-width:220px;background:var(--bg1);border:1px solid var(--border);border-radius:var(--r);padding:var(--s1) 0;box-shadow:0 8px 32px rgba(0,0,0,.1);opacity:0;pointer-events:none;transition:opacity var(--t-fast),transform var(--t-fast);z-index:100}.nav-has-dropdown:focus-within .nav-dropdown,.nav-has-dropdown:hover .nav-dropdown{opacity:1;pointer-events:auto;transform:translateX(-50%) translateY(0)}.nav-dropdown-item{display:block;padding:10px var(--s3);font-size:14px;font-weight:500;color:var(--text2);transition:background var(--t-fast),color var(--t-fast);white-space:nowrap}.nav-dropdown-item:hover{background:var(--g-bg,#f0faf6);color:var(--text)}.nav-mobile-section-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text2);padding:var(--s2) 0 var(--s1);margin-top:var(--s1);border-top:1px solid var(--border)}.nav-mobile-link--sub{font-size:14px;padding-left:var(--s3)}@media (max-width:900px){.nav-links{display:none}.btn-nav-secondary{display:none}.nav-actions .btn{display:none}.nav-hamburger{display:flex}}