.panel{background:var(--color-surface);border:1px solid var(--color-line);border-radius:var(--radius-lg);overflow:hidden}.panel-head{padding:var(--space-5);border-bottom:1px solid var(--color-line);display:flex;justify-content:space-between;gap:var(--space-3);align-items:flex-start}.panel-head h3{font-size:var(--text-md);font-weight:650;color:var(--color-ink);line-height:1.3}.panel-head .muted{font-size:var(--text-sm);margin-top:2px}.panel-aside{flex-shrink:0}.panel-body{padding:var(--space-5)}.page-head{display:flex;justify-content:space-between;gap:var(--space-4);align-items:flex-start;margin-bottom:var(--space-5)}.page-desc{max-width:760px;margin-top:var(--space-2);color:var(--color-muted)}