.header-shell{height:72px;position:sticky;top:0;z-index:50;pointer-events:none}.site-header{position:absolute;top:0;left:50%;transform:translateX(-50%);width:100%;height:72px;border:1px solid transparent;border-bottom-color:rgba(226,234,247,.75);background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-radius:0;box-shadow:none;pointer-events:auto;transition:width .45s cubic-bezier(.2,.8,.2,1),height .45s cubic-bezier(.2,.8,.2,1),top .45s cubic-bezier(.2,.8,.2,1),border-radius .45s cubic-bezier(.2,.8,.2,1),box-shadow .45s ease,background .45s ease}.header-inner{height:100%;width:min(calc(100% - 72px),1200px);position:relative;display:flex;align-items:center;justify-content:space-between;gap:0;transition:width .45s ease}.brand{font-size:18px;transition:font-size .4s ease}.brand-subtitle{font-weight:500;color:#8795af}.brand-mark{transition:width .4s ease,height .4s ease,box-shadow .4s ease}.nav{position:absolute;left:50%;transform:translateX(-50%);display:flex;align-items:center;justify-content:center;gap:31px;flex:none}.nav>a,.nav-group>button{position:relative;color:#25334e;font-size:14px;font-weight:600;transition:color .2s}.nav>a.active:after,.nav-group.active>button:after{content:'';position:absolute;left:0;right:0;bottom:-20px;height:2px;background:#225cff;border-radius:2px}.nav>a:hover,.nav-group>button:hover{color:#225cff}.header-cta{margin-left:auto;background:#172b50;color:#fff;border-radius:10px;padding:11px 19px;box-shadow:none;white-space:nowrap;transition:padding .4s ease,background .2s,transform .2s}.header-cta:hover{background:#225cff}.nav-compact .site-header{top:14px;width:min(calc(100% - 32px),1040px);height:58px;border:1px solid rgba(211,221,241,.92);border-radius:19px;box-shadow:0 12px 32px rgba(25,47,92,.13),inset 0 1px 0 rgba(255,255,255,.75);background:rgba(255,255,255,.88)}.nav-compact .header-inner{width:calc(100% - 38px)}.nav-compact .brand{font-size:16px}.nav-compact .brand-mark{width:30px;height:30px;box-shadow:0 4px 12px #225cff25}.nav-compact .header-cta{padding:9px 15px}.nav-compact .nav>a.active:after,.nav-compact .nav-group.active>button:after{bottom:-13px}.mobile-nav{top:100%}.nav-compact .mobile-nav{border-radius:0 0 18px 18px}@media(max-width:1060px){.nav{gap:18px}.header-inner{width:calc(100% - 44px)}.brand{font-size:16px}.brand-subtitle{display:none}}@media(max-width:900px){.nav{display:flex}.header-cta{display:inline-flex}}@media(max-width:860px){.nav,.header-cta{display:none}.menu-toggle{display:block;margin-left:auto}.mobile-nav{display:none}.mobile-nav.open{display:grid}}@media(max-width:700px){.header-shell{height:64px}.site-header{height:64px}.header-inner{width:calc(100% - 36px)}.brand-subtitle{display:inline}.nav-compact .site-header{top:8px;width:calc(100% - 20px);height:54px;border-radius:16px}.nav-compact .header-inner{width:calc(100% - 28px)}.nav-compact .brand-subtitle{display:none}.mobile-nav{top:100%}}@media(prefers-reduced-motion:reduce){.site-header,.header-inner,.brand,.brand-mark,.header-cta{transition:none}}