.po{display:grid;gap:0;margin-top:10px}.po>h2{margin:0;font-family:var(--cx-display);font-size:clamp(20px,3.4vw,28px);font-weight:700;letter-spacing:-.02em;line-height:1.14;color:var(--cx-ink)}.po-lead{margin:6px 0 14px;color:var(--cx-muted);font-size:14px;line-height:1.5}.po-level{border-top:1px solid rgba(255,255,255,.08)}.po-level:last-child{border-bottom:1px solid rgba(255,255,255,.08)}.po-level summary{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;align-items:center;gap:12px;min-height:58px;padding:10px 2px;cursor:pointer;list-style:none;color:var(--cx-ink)}.po-level summary::-webkit-details-marker{display:none}.po a:focus-visible,.po-level summary:focus-visible{outline:2px solid var(--e-green);outline-offset:3px;border-radius:8px}.po-number{color:var(--lr-accent);font-size:10.5px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;white-space:nowrap}.po-level summary b{min-width:0;font-size:16px;font-weight:700;letter-spacing:-.005em}.po-level summary small{color:var(--cx-muted);font-size:12.5px;white-space:nowrap}.po-level summary svg{color:var(--cx-muted);transition:transform .2s}.po-level[open] summary svg{transform:rotate(180deg)}.po-level ol{display:grid;margin:0;padding:0 2px 12px;list-style:none;counter-reset:lesson}.po-level li{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:14px;padding:11px 0;border-top:1px solid rgba(255,255,255,.05);counter-increment:lesson}.po-level li a{display:grid;gap:3px;min-width:0;color:inherit;text-decoration:none}.po-level li a b{font-size:15px;font-weight:650;color:rgba(244,247,255,.95)}.po-level li a b:before{content:counter(lesson) ". ";color:var(--cx-muted);font-weight:500}.po-level li a:hover b{color:var(--e-green)}.po-level li a span{color:rgba(244,247,255,.66);font-size:13.5px;line-height:1.5}.po-level li small{padding-top:2px;color:var(--cx-muted);font-size:12px;white-space:nowrap}@media (max-width:760px){.po-level summary{grid-template-columns:minmax(0,1fr) auto;row-gap:3px}.po-level summary b,.po-level summary small,.po-number{grid-column:1}.po-level summary svg{grid-column:2;grid-row:1/span 3}}@media (prefers-reduced-motion:reduce){.po-level summary svg{transition:none}}