.site-header{position:sticky;top:0;z-index:40;background-color:rgba(247,241,230,0.96);backdrop-filter:blur(16px);box-shadow:0 1px 0 rgba(0,0,0,0.04)}.site-header__inner{display:flex;align-items:center;justify-content:space-between;padding-block:var(--space-3);gap:var(--space-4)}.site-header__brand{display:inline-flex;align-items:center;gap:var(--space-2);color:var(--color-ink)}.site-header__brand-mark{display:inline-flex;align-items:center;justify-content:center;width:2.4rem;height:2.4rem;border-radius:999px;border:2px solid var(--color-primary);font-family:var(--font-display);font-size:0.9rem;letter-spacing:0.18em;transform:rotate(-8deg);background-color:#fff;box-shadow:var(--shadow-sm)}.site-header__brand-text{display:flex;flex-direction:column;gap:0.1rem}.site-header__brand-kicker{font-size:var(--text-xs);letter-spacing:0.18em;text-transform:uppercase;color:var(--gray-500)}.site-header__brand-title{font-family:var(--font-display);font-size:1.1rem;letter-spacing:0.08em;text-transform:uppercase}.site-header__nav{display:flex;align-items:center}.site-header__nav-list{display:flex;align-items:center;gap:var(--space-3);font-size:var(--text-sm);letter-spacing:0.12em;text-transform:uppercase}.site-header__nav-link{position:relative;padding-block:0.35rem}.site-header__nav-link::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:linear-gradient(90deg,var(--color-primary),var(--color-accent-indigo));transition:width var(--duration-normal) cubic-bezier(var(--ease-out))}.site-header__nav-link:focus-visible::after,.site-header__nav-link:hover::after{width:100%}.site-header__nav-item--highlight .site-header__nav-link{padding-inline:0.9rem;border-radius:999px;border:1px solid rgba(226,59,47,0.7);background-color:rgba(226,59,47,0.06)}.site-header__nav-item--highlight .site-header__nav-link::after{display:none}.site-header__nav-item--highlight .site-header__nav-link:hover{background-color:rgba(226,59,47,0.12)}.site-header__nav-pill{padding:0.1rem 0.65rem;border-radius:999px;border:1px dashed var(--color-accent-matcha);background-color:rgba(255,255,255,0.9)}.site-header__toggle{display:none;align-items:center;gap:0.5rem;color:var(--color-ink)}.site-header__toggle-label{font-size:var(--text-xs);letter-spacing:0.16em;text-transform:uppercase}.site-header__toggle-box{display:inline-flex;flex-direction:column;justify-content:center;gap:0.22rem;width:1.6rem;height:1.6rem;border-radius:999px;border:1px solid rgba(0,0,0,0.24);padding:0.25rem;background-color:rgba(253,248,240,0.9)}.site-header__toggle-line{height:2px;border-radius:999px;background-color:var(--color-ink);transform-origin:center;transition:transform var(--duration-normal) cubic-bezier(var(--ease-in-out)),opacity var(--duration-fast) cubic-bezier(var(--ease-out))}.site-header--nav-open .site-header__toggle-line:first-child{transform:translateY(3px) rotate(42deg)}.site-header--nav-open .site-header__toggle-line:last-child{transform:translateY(-3px) rotate(-42deg)}.site-header--nav-open .site-header__toggle-line:nth-child(2){opacity:0}.site-header__nav-overlay{display:none}@media (max-width:900px){.site-header__toggle{display:inline-flex}.site-header__nav{position:fixed;inset-inline:0;top:0;bottom:auto;transform:translateY(-100%);transition:transform var(--duration-normal) cubic-bezier(var(--ease-in-out));background:radial-gradient(circle at 0 0,rgba(226,59,47,0.18),transparent 60%),radial-gradient(circle at 100% 0,rgba(62,78,122,0.24),transparent 60%),var(--color-bg);box-shadow:0 14px 35px rgba(20,11,5,0.35);border-bottom:1px solid rgba(0,0,0,0.08)}.site-header__nav-list{flex-direction:column;align-items:flex-start;padding:var(--space-6) var(--space-4) var(--space-5);gap:var(--space-2)}.site-header__nav-link{font-size:var(--text-base)}.site-header__nav-item--highlight .site-header__nav-link{margin-top:var(--space-1)}.site-header--nav-open .site-header__nav{transform:translateY(0)}.site-header__inner{padding-block:var(--space-2)}}@media (max-width:520px){.site-header__brand-title{font-size:1rem}.site-header__brand-kicker{display:none}}