/* Shared navigation between exercises (src/brand/site-nav.js): the way back to the area's start page, visible on phones too. */
.site-header{display:flex;align-items:center;justify-content:space-between;gap:12px}
.site-nav{display:flex;align-items:center;justify-content:flex-end;gap:12px;min-width:0;font-size:.8125rem}
.site-back{color:var(--text-interactive-default);text-decoration:none;font-weight:600;white-space:nowrap}.site-back:hover{text-decoration:underline}
.site-context{display:inline-block;min-height:24px;border-radius:4px;padding:4px 8px;font-size:.75rem;line-height:1.3;background:var(--graphic-violet-subtle);color:var(--text-default);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:40vw}
.site-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:8px max(16px,calc((100vw - 1400px)/2));font:500 .8125rem/1.4 Inter,system-ui,sans-serif;background:var(--background-default);border-bottom:1px solid var(--border-default)}
.hub-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr));gap:16px;margin-top:16px}
.exercise{display:flex;flex-direction:column;gap:8px}.exercise h2{margin:0}.exercise .meta{display:flex;flex-wrap:wrap;gap:6px}.exercise .meta .badge{white-space:normal}.exercise .progress-note{margin-top:auto;font-size:.8125rem;color:var(--text-muted)}
.exercise .start:hover{background:var(--surface-interactive-brand-hover)}.exercise .start{align-self:flex-start;display:inline-flex;align-items:center;min-height:40px;padding:8px 18px;border-radius:999px;background:var(--surface-interactive-brand);color:var(--text-on-inverted);text-decoration:none;font-weight:600}
.deeper{margin-top:24px}.deeper summary{cursor:pointer;font-weight:600}.deeper .hub-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))}.deeper a{color:var(--text-interactive-default)}
@media(max-width:520px){.site-nav{gap:8px}.site-context{max-width:38vw}}