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(max-width:1024px){.portal-shell{grid-template-columns:1fr}.portal-topbar{display:flex}.portal-sidebar__logo{display:none}.portal-sidebar{opacity:0;pointer-events:none;height:auto;bottom:0;left:0;right:0;top:calc(56px + env(safe-area-inset-top,0px));transition:opacity .2s var(--ease-out), transform .2s var(--ease-out), visibility 0s linear .2s;visibility:hidden;z-index:50;width:100%;padding:24px 24px 32px;position:fixed;transform:translateY(-8px)}.portal-sidebar.is-open{opacity:1;pointer-events:auto;transition:opacity .2s var(--ease-out), transform .2s var(--ease-out), visibility 0s linear 0s;visibility:visible;transform:translateY(0)}.portal-nav-backdrop{display:none}.portal-body{padding:calc(76px + env(safe-area-inset-top,0px)) 20px 40px}body.portal-nav-open{overflow:hidden}}@media (max-width:640px){.portal-body{padding:calc(76px + env(safe-area-inset-top,0px)) 16px 32px}}@media 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var(--border);border-radius:var(--radius-lg);flex-direction:column;gap:18px;padding:28px;display:flex}.track-section--locked{background:var(--surface-strong);opacity:.85}.track-section__head{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.track-section__head h3{margin:2px 0 6px;font-size:1.35rem}.track-section__head p{color:var(--text-muted);margin:0}.track-section__head a{white-space:nowrap}.track-section__lock{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-pill);color:var(--text-muted);letter-spacing:.12em;text-transform:uppercase;padding:6px 12px;font-size:11px;font-weight:700}.track-section__lock-copy,.track-section__empty{color:var(--text-muted);margin:0;font-style:italic}.module-card--locked{opacity:.7}.module-card__lock-copy{color:var(--text-muted);margin:0;font-style:italic}.ghost-button--locked,.module-card--locked 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