.ni-header{background:#fff;border-bottom:1px solid transparent;position:relative;transition:border-color var(--duration-2) var(--ease-out),box-shadow var(--duration-2) var(--ease-out)}.ni-header.is-scrolled{border-bottom-color:var(--border);box-shadow:var(--shadow-sm)}.ni-header a{text-decoration:none}.ni-header__utility{background:var(--bg-subtle);border-bottom:1px solid var(--border)}.ni-header__utility-inner{align-items:center;display:flex;gap:var(--space-4);justify-content:flex-end;margin:0 auto;max-width:var(--container-lg);padding:var(--space-1) var(--space-11)}.ni-header__utility-link{color:var(--fg-muted);font-size:12.5px;font-weight:var(--weight-semibold)}.ni-header__utility-link:hover{color:var(--ni-blue)}.ni-header__utility-link.is-emphasis{color:var(--ni-blue);font-weight:var(--weight-bold)}.ni-header__utility-link.is-emphasis:hover{color:var(--ni-blue-ink)}.ni-header__bar{align-items:center;display:flex;gap:var(--space-7);height:76px;margin:0 auto;max-width:var(--container-lg);padding:0 var(--space-11);transition:height var(--duration-3) var(--ease-out)}.ni-header.is-scrolled .ni-header__bar{height:60px}.ni-header__logo{align-items:center;display:flex;flex-shrink:0}.ni-header__logo img{display:block;height:40px;transition:height var(--duration-3) var(--ease-out);width:auto}.ni-header.is-scrolled .ni-header__logo img{height:34px}.ni-header__nav{display:flex;flex:1;justify-content:center}.ni-header__menu{display:flex;gap:var(--space-0-5);list-style:none;margin:0;padding:0}.ni-header__item{margin:0;position:relative}.ni-header__link,.ni-header__trigger{align-items:center;background:none;border:0;border-radius:var(--radius-md);color:var(--fg);cursor:pointer;display:inline-flex;font-family:var(--font-body);font-size:14px;font-weight:var(--weight-medium);gap:var(--space-1);line-height:1;padding:var(--space-2) var(--space-3);transition:color var(--duration-1) var(--ease-out),background var(--duration-1) var(--ease-out);white-space:nowrap}.ni-header__link.is-active,.ni-header__link:hover,.ni-header__trigger.is-active,.ni-header__trigger:hover,.ni-header__trigger[aria-expanded=true]{background:var(--bg-feature);color:var(--ni-blue)}.ni-header__link:focus-visible,.ni-header__trigger:focus-visible{box-shadow:var(--shadow-focus);outline:none}.ni-header__caret{color:var(--fg-subtle);transition:transform var(--duration-2) var(--ease-out),color var(--duration-1) var(--ease-out)}.ni-header__trigger:hover .ni-header__caret,.ni-header__trigger[aria-expanded=true] .ni-header__caret{color:var(--ni-blue)}.ni-header__trigger[aria-expanded=true] .ni-header__caret{transform:rotate(180deg)}.ni-header__sub{animation:ni-header-panel-in .2s var(--ease-out) both;background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);left:50%;list-style:none;margin:0;min-width:236px;padding:var(--space-1-5);position:absolute;top:calc(100% + 8px);transform:translateX(-50%);z-index:var(--z-overlay)}.ni-header__sub[hidden]{display:none}.ni-header__sub li{margin:0}.ni-header__sub-link{border-radius:var(--radius-md);color:var(--fg);display:block;font-size:13.5px;font-weight:var(--weight-medium);padding:var(--space-2) var(--space-3);transition:background var(--duration-1) var(--ease-out),color var(--duration-1) var(--ease-out);white-space:nowrap}.ni-header__sub-link:hover,.ni-header__sub-link[aria-current=page]{background:var(--bg-feature);color:var(--ni-blue)}.ni-header__sub-link.is-parent{color:var(--ni-blue);font-weight:var(--weight-semibold)}@keyframes ni-header-panel-in{0%{opacity:0;translate:0 -6px}to{opacity:1;translate:0 0}}.ni-header__actions{align-items:center;display:flex;flex-shrink:0;gap:var(--space-2);margin-left:auto}.ni-header__btn{font-size:14px;padding:var(--space-2) var(--space-4-5)}.ni-header__burger{background:none;border:0;border-radius:var(--radius-md);cursor:pointer;display:none;flex-direction:column;gap:var(--space-1);padding:var(--space-2-5)}.ni-header__burger:focus-visible{box-shadow:var(--shadow-focus);outline:none}.ni-header__burger-bar{background:var(--fg);border-radius:1px;display:block;height:2px;transition:transform var(--duration-2) var(--ease-out),opacity var(--duration-2) var(--ease-out);width:21px}.ni-header__burger[aria-expanded=true] .ni-header__burger-bar:nth-child(2){transform:translateY(6px) rotate(45deg)}.ni-header__burger[aria-expanded=true] .ni-header__burger-bar:nth-child(3){opacity:0}.ni-header__burger[aria-expanded=true] .ni-header__burger-bar:nth-child(4){transform:translateY(-6px) rotate(-45deg)}.ni-header__mobile{animation:ni-header-panel-in .2s var(--ease-out) both;background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;left:0;max-height:calc(100vh - 60px);padding:var(--space-1-5) var(--space-6) var(--space-6);position:absolute;right:0;top:100%}.ni-header__mobile[hidden]{display:none}.ni-header__mobile-scroll{flex:1;min-height:0;overflow-y:auto}.ni-header__mobile-menu,.ni-header__mobile-sub{list-style:none;margin:0;padding:0}.ni-header__mobile-item{border-bottom:1px solid var(--ni-ink-100);margin:0}.ni-header__mobile-link,.ni-header__mobile-trigger{align-items:center;background:none;border:0;color:var(--fg);cursor:pointer;display:flex;font-family:inherit;font-size:15px;font-weight:var(--weight-semibold);justify-content:space-between;padding:var(--space-3-5) var(--space-1);text-align:left;width:100%}.ni-header__mobile-trigger[aria-expanded=true]{color:var(--ni-blue)}.ni-header__mobile-trigger[aria-expanded=true] .ni-header__caret{transform:rotate(180deg)}.ni-header__mobile-sub{padding:0 var(--space-1) var(--space-3-5)}.ni-header__mobile-sub[hidden]{display:none}.ni-header__mobile-sub li{margin:0}.ni-header__mobile-sub a{border-radius:var(--radius-md);color:var(--fg);display:block;font-size:14.5px;padding:var(--space-2-5) var(--space-3)}.ni-header__mobile-sub a:hover{background:var(--bg-feature);color:var(--ni-blue)}.ni-header__mobile-sub a.is-parent{color:var(--ni-blue);font-weight:var(--weight-semibold)}.ni-header__mobile-cta{display:grid;flex-shrink:0;gap:var(--space-2-5);grid-template-columns:1fr 1fr;margin-top:var(--space-4-5)}.ni-header__mobile-cta .ni-btn{text-align:center;white-space:normal}.ni-header--minimal .ni-header__bar{justify-content:space-between}@media (max-width:1100px){.ni-header__nav{display:none}.ni-header__burger{display:flex}}@media (min-width:1101px){.ni-header__mobile{display:none}}@media (max-width:760px){.ni-header__utility{display:none}.ni-header__bar{height:60px;padding:0 var(--space-5)}.ni-header__logo img{height:34px}}@media (max-width:560px){.ni-header:not(.ni-header--minimal) .ni-header__btn{display:none}.ni-header__mobile-cta{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){.ni-header__mobile,.ni-header__sub{animation:none}}