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#f973164d}.badge-locked{background:var(--ns-surface-2);color:var(--ns-text-faint)}.badge-owned{background:var(--ns-badge-owned-bg);color:var(--ns-info-text)}.modal-overlay{z-index:100;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#030712c7;justify-content:center;align-items:center;padding:20px;display:none;position:fixed;inset:0}.modal-overlay.open{display:flex}.modal{background:var(--ns-surface-glass);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--ns-border-soft);box-shadow:var(--ns-shadow), var(--ns-shadow-inner);border-radius:var(--ns-radius-lg);width:100%;max-width:460px;max-height:88dvh;overflow-y:auto}.modal.modal-wide{max-width:640px}.modal-header{border-bottom:1px solid var(--ns-border-soft);justify-content:space-between;align-items:center;padding:18px 20px;display:flex}.modal-header h2{margin:0;font-size:16px;font-weight:700}.modal-close{color:var(--ns-text-faint);cursor:pointer;background:0 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li{color:var(--ns-text-dim);margin-bottom:10px;padding-left:26px;font-size:13.5px;line-height:1.55;position:relative}.checklist li:before{content:"✓";color:var(--ns-accent-text);font-weight:700;position:absolute;top:0;left:0}.pack-grid{grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:18px;display:grid}.pack{border:1px solid var(--ns-border);border-radius:var(--ns-radius-sm);text-align:center;cursor:pointer;width:100%;color:inherit;background:0 0;padding:16px 12px;font-family:inherit;transition:border-color .15s,background .15s;position:relative}.pack:hover{border-color:var(--ns-accent)}.pack.selected{border-color:var(--ns-accent);background:var(--ns-accent-dim)}.pack .pack-credits{font-family:var(--ns-font-mono);font-size:17px;font-weight:600}.pack .pack-price{color:var(--ns-text-dim);margin-top:2px;font-size:12.5px}.pack .pack-best{background:var(--ns-accent);color:var(--ns-on-accent);border-radius:var(--ns-radius-pill);text-transform:uppercase;letter-spacing:.04em;padding:2px 8px;font-size:9.5px;font-weight:800;position:absolute;top:-9px;left:50%;transform:translate(-50%)}.paypal-btn{color:#1a1a1a;cursor:pointer;letter-spacing:-.01em;touch-action:manipulation;background:#ffc439;border:none;border-radius:24px;justify-content:center;align-items:center;gap:6px;width:100%;padding:12px;font-size:15px;font-style:italic;font-weight:800;display:flex}.paypal-btn:hover{filter:brightness(1.04)}.paypal-btn b{color:#003087;font-style:italic}.paypal-btn span.pal{color:#009cde;font-style:italic}.course-layout{grid-template-columns:300px 1fr;gap:0;min-height:calc(100vh - 65px);margin:-28px -32px -60px;display:grid}.lesson-rail{border-right:1px solid var(--ns-border-soft);padding:20px 14px;overflow-y:auto}.lesson-rail .rail-title{color:var(--ns-text-dim);padding:6px 10px 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14px;font-family:inherit;font-size:13px;display:flex}.lesson-item:hover{background:var(--ns-surface);color:var(--ns-text)}.lesson-item.active{background:var(--ns-accent-dim);color:var(--ns-accent-text);font-weight:600}.lesson-item svg{opacity:.7;flex-shrink:0;width:14px;height:14px}.lesson-item.locked{color:var(--ns-text-faint)}.lesson-item.locked svg{opacity:.5}.lesson-item-duration{color:var(--ns-text-faint);flex-shrink:0;margin-left:auto;padding-left:8px;font-size:11px}.lesson-main{padding:28px 40px 60px;overflow-y:auto}.lesson-main .lesson-title{margin:0 0 4px;font-size:22px;font-weight:800}.lesson-main .lesson-updated{color:var(--ns-text-faint);margin-bottom:20px;font-size:12.5px}.video-frame{aspect-ratio:16/9;border:1px solid var(--ns-border);border-radius:var(--ns-radius-lg);background:linear-gradient(160deg,#111c38,#070d1b);justify-content:center;align-items:center;max-width:780px;margin-bottom:22px;display:flex;position:relative}.video-frame .play-btn{border:1px solid var(--ns-accent);width:64px;height:64px;color:var(--ns-accent);cursor:pointer;background:#f9731629;border-radius:50%;justify-content:center;align-items:center;display:flex}.video-frame .play-btn svg{width:24px;height:24px;margin-left:3px}.video-frame .video-badge{border-radius:var(--ns-radius-pill);color:#b9c3d9;background:#00000080;padding:4px 9px;font-size:11px;position:absolute;bottom:14px;left:14px}.resource-list{border:1px solid var(--ns-border);border-radius:var(--ns-radius-lg);background:var(--ns-surface);max-width:780px;margin-bottom:22px;padding:6px 20px}.resource-list-empty{color:var(--ns-text-faint);margin:14px 0;font-size:13px}.resource-item{border-bottom:1px solid var(--ns-border-soft);color:var(--ns-text-dim);align-items:center;gap:10px;padding:12px 0;font-size:13.5px;display:flex}.resource-item:last-child{border-bottom:none}.resource-item svg{width:16px;height:16px;color:var(--ns-text-faint);flex-shrink:0}.bunny-player{max-width:780px;margin-bottom:22px}.bunny-player .video-frame{width:100%;margin-bottom:10px}.bunny-player .video-frame-live{overflow:hidden}.bunny-player .video-frame .video-badge.bunny-player-msg{white-space:normal;text-align:left;pointer-events:none;max-width:calc(100% - 28px);font-size:12px;line-height:1.45;right:14px}.bunny-player-sr{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.bunny-player-action-row{margin-bottom:10px}.bunny-player-retry-row{flex-wrap:wrap;align-items:center;gap:10px 14px;display:flex}.bunny-player-retry{white-space:normal;text-align:center;touch-action:manipulation;-webkit-tap-highlight-color:transparent;min-width:44px;min-height:44px;padding:10px 16px;font-size:13.5px}.bunny-player-retry:disabled{opacity:.6;cursor:default}.bunny-player-retry-note{color:var(--ns-text-faint);flex:220px;font-size:12.5px;line-height:1.45}.bunny-player-retry-row-subtle{gap:0}.bunny-player-retry-link{cursor:pointer;color:var(--ns-text-faint);text-underline-offset:2px;background:0 0;border:none;min-height:32px;margin:0;padding:6px 0;font-size:12px;text-decoration:underline}.bunny-player-retry-link:hover{color:var(--ns-text-dim)}@media (max-width:560px){.bunny-player .video-frame{border-radius:10px}.bunny-player .video-frame .video-badge.bunny-player-msg{max-width:calc(100% - 20px);bottom:10px;left:10px;right:10px}.bunny-player-retry{width:100%}}.lesson-notes{max-width:780px;color:var(--ns-text-dim);white-space:pre-line;font-size:14px;line-height:1.7}.lesson-nav{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;max-width:780px;margin-top:24px;display:flex}.lesson-nav .btn{max-width:100%}.chat-cta{border:1px solid var(--ns-border);border-radius:var(--ns-radius);background:var(--ns-surface);justify-content:space-between;align-items:center;gap:14px;max-width:780px;margin-top:26px;padding:16px 18px;display:flex}.chat-cta .cc-left{align-items:center;gap:12px;display:flex}.chat-cta .cc-icon{background:var(--ns-accent-dim);width:38px;height:38px;color:var(--ns-accent-text);border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.chat-cta .cc-title{font-size:13.5px;font-weight:700}.chat-cta .cc-sub{color:var(--ns-text-faint);margin-top:2px;font-size:12px}.notebooks-layout{grid-template-columns:280px 1fr 260px;gap:0;height:100vh;display:grid}.nb-pane-tabs{border-bottom:1px solid var(--ns-border-soft);gap:6px;padding:10px 12px}.nb-pane-tab{text-align:center;border-radius:var(--ns-radius-sm);color:var(--ns-text-dim);cursor:pointer;border:1px solid var(--ns-border);background:var(--ns-bg);flex:1;padding:9px 8px;font-family:inherit;font-size:12.5px;font-weight:600}.nb-pane-tab.active{border-color:var(--ns-accent);color:var(--ns-accent-text);background:var(--ns-accent-dim)}.nb-rail{border-right:1px solid var(--ns-border-soft);flex-direction:column;padding:18px 12px;display:flex}.nb-rail-head{justify-content:space-between;align-items:center;padding:4px 6px 12px;display:flex}.nb-rail-head h4{color:var(--ns-text-dim);margin:0;font-size:13px;font-weight:700}.nb-item{border-radius:var(--ns-radius-sm);cursor:pointer;text-align:left;width:100%;color:inherit;background:0 0;border:none;align-items:center;gap:9px;margin-bottom:2px;padding:10px;font-family:inherit;font-size:13px;display:flex}.nb-item:hover{background:var(--ns-surface)}.nb-item.active{background:var(--ns-accent-dim);color:var(--ns-accent-text)}.nb-item .nb-icon{background:var(--ns-surface-2);border-radius:7px;flex:none;justify-content:center;align-items:center;width:26px;height:26px;font-size:12px;display:flex}.nb-item.active .nb-icon{background:var(--ns-accent-dim-strong)}.nb-item .nb-label{flex-direction:column;flex:1;line-height:1.3;display:flex;overflow:hidden}.nb-item .nb-name{white-space:nowrap;text-overflow:ellipsis;font-weight:600;overflow:hidden}.nb-item .nb-count{color:var(--ns-text-faint);font-size:11px}.nb-pin{color:var(--ns-accent-text);font-size:11px}.nb-divider{background:var(--ns-border-soft);height:1px;margin:12px 4px}.nb-new-btn{border-radius:var(--ns-radius-sm);color:var(--ns-text-dim);cursor:pointer;border:1px dashed var(--ns-border);text-align:left;background:0 0;align-items:center;gap:8px;width:100%;margin-top:6px;padding:9px 10px;font-family:inherit;font-size:13px;display:flex}.nb-new-btn:hover{border-color:var(--ns-accent);color:var(--ns-accent-text)}.nb-chat{border-right:1px solid var(--ns-border-soft);flex-direction:column;display:flex}.nb-chat-head{border-bottom:1px solid var(--ns-border-soft);justify-content:space-between;align-items:center;gap:12px;padding:16px 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