.eh-header{position:sticky;top:0;z-index:40;background:rgba(247,249,251,0.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(215,226,235,0.9)}.eh-header-inner{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;padding-block:0.85rem}.eh-brand{display:flex;align-items:center;gap:0.9rem;color:var(--color-text)}.eh-brand:hover{color:var(--color-primary-dark)}.eh-brand-mark{width:2.5rem;height:2.5rem;border-radius:999px;background:radial-gradient(circle at 20% 0,var(--color-primary),var(--color-primary-dark));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.1rem;box-shadow:var(--shadow-md)}.eh-brand-text{display:flex;flex-direction:column;gap:0.1rem}.eh-brand-name{font-weight:600;letter-spacing:-0.02em;font-size:1.05rem}.eh-brand-tagline{font-size:0.75rem;color:var(--color-text-muted)}.eh-nav{display:flex;align-items:center}.eh-nav-list{display:flex;align-items:center;gap:1.75rem}.eh-nav-link{font-size:0.95rem;font-weight:500;color:var(--color-text-muted);position:relative;padding-block:0.25rem}.eh-nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:linear-gradient(90deg,var(--color-primary),var(--color-primary-dark));border-radius:999px;transition:width var(--transition-base)}.eh-nav-link:hover{color:var(--color-primary-dark)}.eh-nav-link:hover::after{width:100%}.eh-nav-cta{margin-left:0.5rem}.eh-nav-btn{font-size:0.8rem;padding-inline:1.2rem;padding-block:0.55rem}.nav-toggle{display:none}@media (max-width:880px){.eh-header-inner{padding-block:0.6rem}.eh-brand-tagline{display:none}.nav-toggle{display:flex}.eh-nav{position:fixed;inset-inline:0;top:3.4rem;z-index:39;pointer-events:none}.eh-nav-list{flex-direction:column;align-items:flex-start;gap:0;border-radius:1.1rem;margin:0.5rem auto 0;max-width:20rem;background:var(--color-surface);box-shadow:var(--shadow-lg);border:1px solid rgba(215,226,235,0.9);padding:0.5rem;transform:translateY(-10px);opacity:0;visibility:hidden;transition:opacity var(--transition-base),transform var(--transition-base),visibility var(--transition-base)}.eh-nav-item{width:100%}.eh-nav-link{display:block;width:100%;padding:0.6rem 0.85rem;border-radius:0.75rem}.eh-nav-link::after{display:none}.eh-nav-link:hover{background:var(--color-surface-soft)}.eh-nav-cta{width:100%;margin-top:0.25rem}.eh-nav-btn{width:100%;justify-content:center;padding-block:0.7rem}.eh-nav.is-open{pointer-events:auto}.eh-nav.is-open .eh-nav-list{opacity:1;visibility:visible;transform:translateY(0)}}@media (prefers-reduced-motion:reduce){.eh-nav-list{transition:none}.eh-nav.is-open .eh-nav-list{transition:none}}