.site-header{position:sticky;top:0;z-index:1000;background:var(--color-surface);border-bottom:1px solid var(--color-border)}
.site-header__inner{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:var(--space-4)}
.site-header__brand{display:flex;align-items:center;gap:12px;min-width:0}
.site-header__logo{height:40px;width:auto}
.site-header__brand-text{font-family:var(--font-heading);font-size:1.2rem;white-space:nowrap}
.site-header__toggle{display:none;width:44px;height:44px;border-radius:var(--radius-sm);align-items:center;justify-content:center}
.site-header__toggle-lines, .site-header__toggle-lines::before, .site-header__toggle-lines::after{content:"";display:block;width:22px;height:2px;background:var(--color-text-primary);position:relative;transition:var(--transition-fast)}
.site-header__toggle-lines::before{position:absolute;top:-6px}
.site-header__toggle-lines::after{position:absolute;top:6px}
.site-header__nav{display:flex;align-items:center}
.site-header__menu{list-style:none;display:flex;gap:var(--space-4);margin:0;padding:0;align-items:center}
.site-header__menu li{margin:0}
.site-header__menu a{font-size:var(--fs-5);color:var(--color-text-primary)}
.site-header__cta{margin-left:8px}
.site-header__mobile-extra{display:none}

@media (max-width:900px){
.site-header__toggle{display:flex}
.site-header__nav{position:fixed;top:72px;right:0;width:100%;max-width:320px;height:calc(100vh - 72px);background:var(--color-surface);border-left:1px solid var(--color-border);flex-direction:column;transform:translateX(100%);transition:transform var(--transition-fast);overflow-y:auto;padding:var(--space-4)}
.site-header__nav.is-open{transform:translateX(0)}
.site-header__menu{flex-direction:column;align-items:flex-start;width:100%}
.site-header__mobile-extra{display:block;margin-top:var(--space-4)}
.site-header__mobile-extra ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--space-3)}
}