.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,0.92);backdrop-filter:blur(18px);border-bottom:1px solid rgba(148,163,184,0.18)}.site-header__inner{display:flex;align-items:center;justify-content:space-between;padding-block:0.9rem}.site-header__brand{display:flex;align-items:center;gap:0.7rem;color:var(--color-text)}.site-header__brand-text{display:flex;flex-direction:column;gap:0.1rem}.site-header__brand-name{font-family:var(--font-display);font-weight:700;font-size:var(--text-lg);letter-spacing:-0.03em}.site-header__brand-tagline{font-size:var(--text-xs);color:var(--color-muted)}.site-header__logo-mark{width:2.25rem;height:2.25rem;border-radius:1rem;background:radial-gradient(circle at 20% 0,var(--color-accent-yellow) 0,transparent 52%),linear-gradient(135deg,var(--color-primary),var(--color-accent-mint));box-shadow:var(--shadow-soft-puzzle);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.site-header__logo-arrow{position:relative;width:1.35rem;height:0.32rem;border-radius:999px;background:#ffffff}.site-header__logo-arrow::after{content:"";position:absolute;right:-0.4rem;top:50%;transform:translateY(-50%);border-style:solid;border-width:0.38rem 0 0.38rem 0.56rem;border-color:transparent transparent transparent #ffffff}.site-header__menu-toggle{display:inline-flex;align-items:center;justify-content:center;width:2.4rem;height:2.4rem;border-radius:999px;border:1px solid rgba(148,163,184,0.3);background:#ffffff;color:var(--color-text);box-shadow:var(--shadow-xs);transition:background-color var(--transition-base) var(--easing-soft),box-shadow var(--transition-base) var(--easing-soft),transform var(--transition-fast) var(--easing-soft)}.site-header__menu-toggle:hover{background:var(--color-primary-soft);box-shadow:var(--shadow-sm);transform:translateY(-1px)}.site-header__menu-toggle:active{transform:translateY(0)}.site-header__menu-toggle-box{display:inline-flex;flex-direction:column;gap:0.22rem}.site-header__menu-toggle-line{width:1.1rem;height:0.12rem;border-radius:999px;background:var(--color-text);transition:transform var(--transition-base) var(--easing-soft),opacity var(--transition-base) var(--easing-soft)}.site-header__menu-toggle[aria-expanded="true"] .site-header__menu-toggle-line:nth-child(1){transform:translateY(0.34rem) rotate(45deg)}.site-header__menu-toggle[aria-expanded="true"] .site-header__menu-toggle-line:nth-child(2){opacity:0}.site-header__menu-toggle[aria-expanded="true"] .site-header__menu-toggle-line:nth-child(3){transform:translateY(-0.34rem) rotate(-45deg)}.site-header__nav{position:absolute;inset-inline:0;top:100%;background:#ffffff;border-bottom:1px solid rgba(148,163,184,0.15);box-shadow:0 18px 40px rgba(15,23,42,0.12);transform-origin:top;transform:scaleY(0.9);opacity:0;pointer-events:none;transition:opacity var(--transition-base) var(--easing-soft),transform var(--transition-base) var(--easing-soft)}.site-header__nav--open{opacity:1;transform:scaleY(1);pointer-events:auto}.site-header__nav-list{display:flex;flex-direction:column;gap:0.25rem;padding:0.75rem var(--container-padding-inline) 1rem}.site-header__nav-item{display:block}.site-header__nav-link{display:flex;align-items:center;justify-content:space-between;padding:0.55rem 0.4rem;border-radius:var(--radius-lg);font-size:var(--text-sm);font-weight:500;color:var(--color-muted);transition:background-color var(--transition-base) var(--easing-soft),color var(--transition-base) var(--easing-soft),transform var(--transition-fast) var(--easing-soft)}.site-header__nav-link::after{content:"";width:0.6rem;height:0.18rem;border-radius:999px;background:var(--color-primary-soft);position:relative;transform:translateX(-6px);opacity:0;transition:opacity var(--transition-base) var(--easing-soft),transform var(--transition-base) var(--easing-soft)}.site-header__nav-link:hover{background:var(--color-primary-soft);color:var(--color-text);transform:translateY(-1px)}.site-header__nav-link:hover::after{opacity:1;transform:translateX(4px)}.site-header__nav-item--highlight .site-header__nav-link{background:var(--color-primary);color:#ffffff}.site-header__nav-item--highlight .site-header__nav-link::after{background:rgba(255,255,255,0.8)}.site-header__nav-item--highlight .site-header__nav-link:hover{background:var(--color-primary-strong)}.site-header__nav-link--cta{font-weight:600}.site-header__nav-link:focus-visible{outline:none;box-shadow:var(--shadow-focus)}@media (min-width:768px){.site-header__menu-toggle{display:none}.site-header__nav{position:static;opacity:1;transform:none;pointer-events:auto;background:transparent;border-bottom:0;box-shadow:none}.site-header__nav-list{flex-direction:row;align-items:center;gap:0.5rem;padding:0}.site-header__nav-link{padding-inline:0.8rem;padding-block:0.4rem;background:transparent}.site-header__nav-item--highlight .site-header__nav-link{padding-inline:1rem;padding-block:0.45rem}.site-header__nav-link::after{display:none}}@media (min-width:1024px){.site-header__brand-name{font-size:1.3rem}.site-header__nav-list{gap:0.75rem}}