.Z9UgiG_stage{background:linear-gradient(180deg, var(--color-navy) 0%, var(--color-ink) 70%);min-height:70vh;color:var(--color-white)}.Z9UgiG_layout{grid-template-columns:minmax(0,1fr) 320px;align-items:start;gap:40px;padding-top:28px;padding-bottom:72px;display:grid}.Z9UgiG_main{min-width:0}.Z9UgiG_header{margin-top:24px}.Z9UgiG_headerTop{justify-content:space-between;align-items:baseline;gap:16px;display:flex}.Z9UgiG_kickers{flex-wrap:wrap;gap:0 .6em;display:flex}.Z9UgiG_back{color:#ffffffb8;flex:none;font-size:14px;font-weight:700;text-decoration:none;display:inline-block}.Z9UgiG_back:hover{color:var(--color-amber)}.Z9UgiG_courseCode{color:#fff9}.Z9UgiG_meta{color:var(--color-amber)}.Z9UgiG_meta:before{content:"·";color:#fff9;margin-right:.6em}.Z9UgiG_title{max-width:900px;margin:8px 0 0;font-size:34px;font-weight:600;line-height:1.15}.Z9UgiG_player{aspect-ratio:16/9;border-radius:var(--radius);background:var(--color-ink);position:relative;overflow:hidden;box-shadow:0 24px 60px -30px #000c}.Z9UgiG_player iframe,.Z9UgiG_mount{border:0;width:100%;height:100%;position:absolute;inset:0}.Z9UgiG_unmute{border-radius:var(--radius-sm);background:var(--color-amber);min-height:40px;color:var(--color-ink);font-family:var(--font-sans);cursor:pointer;border:none;align-items:center;gap:8px;padding:0 14px;font-size:14px;font-weight:700;display:inline-flex;position:absolute;top:14px;left:14px;box-shadow:0 8px 20px -8px #0009}.Z9UgiG_unmute:hover{background:var(--color-amber-hover)}.Z9UgiG_unmute:focus-visible{outline:2px solid var(--color-white);outline-offset:2px}.Z9UgiG_controls{grid-template-columns:1fr 1fr;gap:16px;margin-top:28px;display:grid}.Z9UgiG_step{border-radius:var(--radius-sm);color:var(--color-white);border:1px solid #ffffff2e;flex-direction:column;gap:4px;padding:14px 18px;text-decoration:none;transition:border-color .2s;display:flex}.Z9UgiG_step:hover{border-color:var(--color-amber)}.Z9UgiG_stepNext{text-align:right}.Z9UgiG_stepLabel{color:var(--color-amber);letter-spacing:.12em;text-transform:uppercase;font-size:12px;font-weight:700}.Z9UgiG_stepTitle{font-family:var(--font-serif);font-size:16px;font-weight:600;line-height:1.3}.Z9UgiG_stepPlaceholder{display:block}.Z9UgiG_youtube{color:#fff9;margin-top:18px;font-size:13.5px;text-decoration:none;display:inline-block}.Z9UgiG_youtube:hover{color:var(--color-white);text-decoration:underline}.Z9UgiG_sidebar{border-top:2px solid var(--color-amber);background:#ffffff0a;max-height:calc(100vh - 120px);overflow-y:auto}.Z9UgiG_sidebarTitle{color:#fff9;margin:0;padding:16px 18px 12px}.Z9UgiG_list{margin:0;padding:0 0 8px;list-style:none;position:relative}.Z9UgiG_item{color:#ffffffd1;border-left:3px solid #0000;flex-direction:column;gap:2px;padding:10px 18px;text-decoration:none;display:flex}.Z9UgiG_item:hover{color:var(--color-white);background:#ffffff0f}.Z9UgiG_item[aria-current=page]{border-left-color:var(--color-amber);color:var(--color-white);background:#ffffff14}.Z9UgiG_itemMeta{color:#ffffff80;letter-spacing:.12em;text-transform:uppercase;font-size:11px;font-weight:700}.Z9UgiG_item[aria-current=page] .Z9UgiG_itemMeta{color:var(--color-amber)}.Z9UgiG_itemTitle{font-size:14.5px;line-height:1.4}.Z9UgiG_itemThumb,.Z9UgiG_paging{display:none}.Z9UgiG_pageButton{width:36px;height:36px;color:var(--color-white);cursor:pointer;background:#ffffff0f;border:1px solid #ffffff3d;border-radius:50%;justify-content:center;align-items:center;padding:0;transition:border-color .2s,background .2s;display:inline-flex}.Z9UgiG_pageButton:hover:not(:disabled){border-color:var(--color-amber);background:#ffffff1f}.Z9UgiG_pageButton:disabled{opacity:.3;cursor:default}.Z9UgiG_pageButton:focus-visible{outline:2px solid var(--color-amber);outline-offset:2px}.Z9UgiG_missing{padding-top:80px;padding-bottom:96px}.Z9UgiG_missingKicker{color:var(--color-amber)}.Z9UgiG_missingText{color:#ffffffc7;max-width:560px;margin:16px 0 24px;font-size:19px;line-height:1.55}.Z9UgiG_missingLink{color:var(--color-amber);font-size:15px;font-weight:700;text-decoration:none}.Z9UgiG_missingLink:hover{text-decoration:underline}@media (prefers-reduced-motion:reduce){.Z9UgiG_step{transition:none}}@media (max-width:1040px){.Z9UgiG_layout{grid-template-columns:minmax(0,1fr);gap:32px;padding-top:20px;padding-bottom:48px}.Z9UgiG_title{font-size:26px}.Z9UgiG_controls{grid-template-columns:minmax(0,1fr)}.Z9UgiG_stepPlaceholder{display:none}.Z9UgiG_controls:has(.Z9UgiG_stepNext) .Z9UgiG_stepPrevious{display:none}.Z9UgiG_step{text-align:left;flex-direction:row;align-items:baseline;gap:10px;min-width:0;padding:12px 16px}.Z9UgiG_stepLabel{flex:none}.Z9UgiG_stepTitle{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.Z9UgiG_sidebar{background:0 0;border-top:none;min-width:0;max-height:none;overflow:visible}.Z9UgiG_sidebarHead{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.Z9UgiG_sidebarTitle{padding:0}.Z9UgiG_paging{flex:none;gap:8px;display:flex}.Z9UgiG_list{margin:0 calc(-1 * var(--gutter));padding:0 var(--gutter) 6px;scroll-padding-inline:var(--gutter);scroll-snap-type:x proximity;scrollbar-width:none;gap:12px;display:flex;overflow-x:auto}.Z9UgiG_list::-webkit-scrollbar{display:none}.Z9UgiG_listItem{scroll-snap-align:start;flex:none;width:180px}.Z9UgiG_item{border-left:none;gap:6px;padding:0}.Z9UgiG_item:hover,.Z9UgiG_item[aria-current=page]{background:0 0}.Z9UgiG_itemThumb{aspect-ratio:16/9;border-radius:var(--radius);background:#ffffff14;border:2px solid #0000;display:block;position:relative;overflow:hidden}.Z9UgiG_itemThumb img{object-fit:cover}.Z9UgiG_item[aria-current=page] .Z9UgiG_itemThumb{border-color:var(--color-amber)}.Z9UgiG_itemTitle{-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:13.5px;line-height:1.35;display:-webkit-box;overflow:hidden}}@media (max-width:560px){.Z9UgiG_header{margin-top:16px}.Z9UgiG_kickers{font-size:11px}.Z9UgiG_courseName{display:none}.Z9UgiG_back{font-size:13px}.Z9UgiG_title{margin-top:6px;font-size:21px;line-height:1.2}.Z9UgiG_controls{gap:10px;margin-top:18px}.Z9UgiG_step{padding:10px 14px}.Z9UgiG_listItem{width:156px}.Z9UgiG_stepLabel{font-size:11px}.Z9UgiG_stepTitle{font-size:15px}.Z9UgiG_youtube{margin-top:12px;font-size:13px}.Z9UgiG_layout{padding-top:0}.Z9UgiG_player{margin:0 calc(-1 * var(--gutter));box-shadow:none;border-radius:0}}