/* Shared study navigation: same Apple palette as the preparation hub. */
.site-header{background:var(--color-ink);color:var(--color-on-primary);backdrop-filter:none;border-bottom:0}
.site-header .brand,.site-header .header-nav a,.site-header .course-link{color:var(--color-on-primary)}
.site-header .brand-mark{background:var(--color-on-primary);color:var(--color-ink)}
.site-header .header-inner{max-width:72rem;min-height:64px;flex-wrap:wrap;padding-block:var(--space-xs);gap:var(--space-md)}
.site-header .header-nav{display:flex;gap:var(--space-md);flex-wrap:wrap}
.site-header .header-nav a,.site-header .course-link{display:inline-flex;align-items:center;min-height:44px}
.site-header .save-status{color:var(--color-dark-muted);font-size:var(--text-fine)}
body.course-page .hero-inner{padding-top:var(--space-xxl);padding-bottom:var(--space-xxl);text-align:left}
body.course-page .hero h1{font-size:var(--text-display)}
body.course-page .hero-actions{justify-content:flex-start}
body.course-page .hero-copy{margin-left:0}
body.course-page .overall-progress{margin-left:0}
@media(max-width:734px){.site-header .header-inner{justify-content:space-between}.site-header .header-nav{margin-left:0;gap:var(--space-sm)}.site-header .save-status{width:100%;white-space:normal}.site-header .course-link{font-size:var(--text-caption)}}