.site-header{background:var(--color-paper);border-bottom:1px solid var(--color-border);height:var(--header-height);display:flex;align-items:center;position:sticky;top:0;z-index:10}.site-header__inner{display:flex;align-items:center;gap:var(--space-6);width:100%}.site-header__brand{font-size:var(--text-lg);font-weight:var(--font-weight-bold);color:var(--color-brand-navy);letter-spacing:var(--letter-spacing-tight);text-decoration:none}.site-header__brand:hover{text-decoration:none}.site-header__nav{display:flex;align-items:center;gap:var(--space-5);margin-left:auto}.site-header__nav a{color:var(--color-text-strong);font-weight:var(--font-weight-medium);font-size:var(--text-sm)}.site-header__nav a:hover{color:var(--color-brand-navy);text-decoration:none}.site-header__cta{display:inline-flex;align-items:center;padding:var(--space-2) var(--space-4);background:var(--color-brand-navy);color:var(--color-text-inverse);border-radius:var(--radius-md);font-weight:var(--font-weight-semibold);font-size:var(--text-sm)}.site-header__cta:hover{background:#16304f;color:var(--color-text-inverse);text-decoration:none}