.header{position:sticky;top:0;z-index:100;transition:background-color var(--speed) var(--ease-out),box-shadow var(--speed) var(--ease-out),border-color var(--speed) var(--ease-out);border-bottom:1px solid transparent}.header__inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;height:var(--header-height);transition:height var(--speed) var(--ease-out)}.header.is-scrolled{background:color-mix(in oklab,var(--bg) 78%,transparent);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);border-bottom-color:var(--border);box-shadow:0 10px 30px -22px #0d102099}.header.is-scrolled .header__inner{height:62px}.brand{display:inline-flex;align-items:center;gap:.7rem;font-family:var(--font-display);font-weight:600;letter-spacing:-.02em}.brand__mark{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;font-size:.85rem;font-weight:700;letter-spacing:.02em;color:#fff;background:var(--gradient-brand);background-size:180% 180%;box-shadow:var(--shadow-sm),inset 0 1px #ffffff59;transition:transform var(--speed) var(--ease-spring),background-position var(--speed-slow) var(--ease-out)}.brand:hover .brand__mark{transform:rotate(-6deg) scale(1.06);background-position:100% 50%}.brand__mark--image{width:46px;height:46px;background:none;box-shadow:none;border-radius:0;overflow:visible;padding:0}.brand__mark--image img{width:100%;height:100%;object-fit:contain}.brand__name{font-size:1.06rem}.brand__tagline{display:block;font-family:var(--font-sans);font-size:.68rem;font-weight:500;letter-spacing:.09em;text-transform:uppercase;color:var(--text-subtle)}.nav{display:none;align-items:center;gap:.25rem}@media(min-width:900px){.nav{display:flex}}.nav__link{position:relative;padding:.45rem .85rem;border-radius:var(--radius-pill);font-size:var(--step--1);font-weight:500;color:var(--text-muted);transition:color var(--speed) var(--ease-out),background-color var(--speed) var(--ease-out)}.nav__link:hover,.nav__link[aria-current=page]{color:var(--text);background:var(--surface-sunken)}.nav__link:after{content:"";position:absolute;left:50%;bottom:.15rem;width:0;height:2px;border-radius:2px;background:var(--gradient-brand);transform:translate(-50%);transition:width var(--speed) var(--ease-out)}.nav__link:hover:after{width:42%}.header__actions{display:flex;align-items:center;gap:.5rem}.lang{display:inline-flex;padding:2px;border-radius:var(--radius-pill);border:1px solid var(--border);background:var(--surface)}.lang__option{padding:.28rem .6rem;border-radius:var(--radius-pill);font-size:.72rem;font-weight:700;letter-spacing:.04em;color:var(--text-subtle);transition:color var(--speed-fast) var(--ease-out),background-color var(--speed-fast) var(--ease-out)}.lang__option:hover{color:var(--text)}.lang__option[aria-current=true]{color:#fff;background:var(--gradient-brand)}@media(max-width:560px){.lang{display:none}}.header__cta{display:none}@media(min-width:700px){.header__cta{display:inline-flex}}.theme-toggle__icon{transition:transform var(--speed-slow) var(--ease-spring),opacity var(--speed) var(--ease-out)}.theme-toggle .icon-sun{display:none}:root[data-theme=dark] .theme-toggle .icon-sun,html.dark .theme-toggle .icon-sun{display:block}:root[data-theme=dark] .theme-toggle .icon-moon,html.dark .theme-toggle .icon-moon{display:none}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) .theme-toggle .icon-sun{display:block}:root:not([data-theme=light]) .theme-toggle .icon-moon{display:none}}.theme-toggle:hover .theme-toggle__icon{transform:rotate(35deg)}.nav-toggle{display:inline-grid}@media(min-width:900px){.nav-toggle{display:none}}.nav-toggle__bars{position:relative;width:18px;height:2px;border-radius:2px;background:currentColor;transition:background-color var(--speed-fast) var(--ease-out)}.nav-toggle__bars:before,.nav-toggle__bars:after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:currentColor;transition:transform var(--speed) var(--ease-spring)}.nav-toggle__bars:before{top:-6px}.nav-toggle__bars:after{top:6px}.nav-toggle[aria-expanded=true] .nav-toggle__bars{background-color:transparent}.nav-toggle[aria-expanded=true] .nav-toggle__bars:before{transform:translateY(6px) rotate(45deg)}.nav-toggle[aria-expanded=true] .nav-toggle__bars:after{transform:translateY(-6px) rotate(-45deg)}.mobile-nav{display:grid;gap:.2rem;overflow:hidden;max-height:0;padding-inline:var(--gutter);background:color-mix(in oklab,var(--bg) 90%,transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-bottom:1px solid transparent;transition:max-height var(--speed-slow) var(--ease-out),padding-block var(--speed) var(--ease-out),border-color var(--speed) var(--ease-out)}.mobile-nav.is-open{max-height:60vh;padding-block:1rem 1.4rem;border-bottom-color:var(--border)}.mobile-nav__link{padding:.7rem .5rem;border-radius:var(--radius-sm);font-family:var(--font-display);font-size:var(--step-1);color:var(--text-muted);transition:color var(--speed-fast) var(--ease-out),background-color var(--speed-fast) var(--ease-out)}.mobile-nav__link:hover{color:var(--text);background:var(--surface-sunken)}@media(min-width:900px){.mobile-nav{display:none}}