.us-header{position:sticky;top:0;z-index:1000;background:#000;height:72px;display:flex;align-items:center;border-bottom:1px solid var(--color-border)}
.us-header__inner{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);width:100%}
.us-header__brand{display:flex;align-items:center;gap:0.6rem;min-width:0}
.us-header__logo{height:40px;width:auto}
.us-header__brand-text{font-family:var(--font-heading);font-size:1rem;white-space:nowrap}
.us-header__toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.us-header__toggle-line{width:22px;height:2px;background:var(--color-fg)}
.us-header__nav{display:flex}
.us-header__menu{display:flex;gap:1.2rem;align-items:center}
.us-header__menu li{margin:0;padding:0}
.us-header__menu a{font-size:0.95rem;white-space:nowrap}
.us-header__menu a:hover{color:var(--color-accent)}
.us-header__contact a{border:1px solid var(--color-border);padding:0.4rem 0.8rem;border-radius:var(--radius)}
@media(max-width:900px){
.us-header{height:56px}
.us-header__brand-text{display:none}
.us-header__logo{height:32px}
.us-header__toggle{display:flex}
.us-header__nav{position:fixed;top:56px;left:0;width:100%;background:#000;max-height:calc(100vh - 56px);overflow:auto;display:none}
.us-header__nav.is-open{display:block}
.us-header__menu{flex-direction:column;align-items:flex-start;padding:var(--space-3)}
}