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monospace}[data-theme=dark]{--page:#0d1114;--surface:#13181d;--surface-strong:#182028;--ink:#f5f7fa;--muted:#9ca7b3;--line:#26303a;--gold:#d3ae57;--emerald:#33b99b;--rose:#df6b84;--cyan:#57abd0;--shadow:0 22px 60px #0000006b}*{box-sizing:border-box}html{background:var(--page);min-height:100%}body{background:linear-gradient(180deg, #ffffffdb, #f7f7f4f5), var(--page);min-height:100%;color:var(--ink);font-family:var(--font-sans);letter-spacing:0;margin:0}[data-theme=dark] body{background:radial-gradient(circle at top right, #57abd014, transparent 28%), radial-gradient(circle at top left, #33b99b14, transparent 26%), linear-gradient(180deg, #0d1114fa, #0d1114f0), var(--page)}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}textarea.input{resize:vertical;min-height:128px;padding-block:12px}.app-frame{grid-template-columns:288px 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var(--line);background:var(--surface);min-height:42px;color:var(--ink);cursor:pointer;border-radius:999px;align-items:center;gap:8px;padding:0 12px;display:inline-flex}[data-theme=dark] .theme-toggle,[data-theme=dark] .sidebar-dismiss,[data-theme=dark] .mobile-menu-button{background:#ffffff0f}.topbar{justify-content:space-between;align-items:center;gap:18px;margin-bottom:26px;display:flex}.eyebrow{color:var(--gold);margin:0 0 8px;font-size:12px;font-weight:760}.page-title{margin:0;font-size:clamp(28px,4vw,44px);font-weight:780;line-height:1.15}.page-copy{max-width:760px;color:var(--muted);margin:10px 0 0;font-size:15px;line-height:1.9}.actions{flex-wrap:wrap;gap:10px;display:flex}.button{border-radius:var(--radius);cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;min-height:42px;padding:0 14px;font-weight:720;transition:transform .16s,box-shadow .16s,background 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solid #1717171f;border-radius:18px;gap:12px;min-width:220px;padding:14px;display:grid;position:absolute;bottom:calc(100% + 10px);box-shadow:0 18px 44px #0c0c0c2e}.player-settings-section{gap:8px;display:grid}.player-settings-label{color:var(--muted);font-size:12px;font-weight:760}.player-volume-panel{z-index:7;inset-inline-end:0;background:#fffffffa;border:1px solid #1717171f;border-radius:18px;align-items:center;gap:10px;min-width:190px;padding:12px 14px;display:inline-flex;position:absolute;bottom:calc(100% + 10px);box-shadow:0 18px 44px #0c0c0c2e}.player-volume-toggle{width:34px;height:34px;color:var(--ink);cursor:pointer;background:#fff;border:1px solid #1717171f;border-radius:999px;justify-content:center;align-items:center;display:inline-flex}.player-volume-panel .player-volume{flex:auto;min-width:96px}.player-volume-value{color:#3d4147;text-align:left;min-width:36px;font-size:12px;font-weight:760}.player-loading{place-items:center;display:grid;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.player-buffer-card{color:#fff;background:#0a0a0ac7;border:1px solid #ffffff29;border-radius:16px;justify-items:center;gap:10px;min-width:196px;padding:18px 20px 16px;display:grid;box-shadow:0 18px 44px #00000047}.player-buffer-card strong{font-size:14px;font-weight:760}.player-buffer-card span:last-child{color:#ffffffb8;font-size:12px;font-weight:700}.player-buffer-box{background:#ffffff24;border-radius:999px;width:148px;height:14px;overflow:hidden}.player-buffer-box-fill{background:linear-gradient(90deg,#2b7f9f,#0d7b66);border-radius:999px;height:100%;transition:width .18s}.player-spinner{border:3px solid #fff3;border-top-color:#fff;border-radius:50%;width:42px;height:42px;animation:.9s linear infinite spin}.player-watermark{max-width:min(240px,42vw);color:rgba(255, 255, 255, var(--player-watermark-opacity,.42));text-shadow:0 1px 12px #0000006b;pointer-events:none;z-index:2;gap:2px;font-size:14px;font-weight:760;line-height:1.45;transition:top .5s,right .5s,bottom .5s,left .5s,transform .5s;display:grid;position:absolute}.player-watermark span{color:rgba(255, 255, 255, var(--player-watermark-secondary-opacity,.3));font-size:11px;font-weight:700}.player-fullscreen-controls{z-index:3;pointer-events:none;opacity:1;background:linear-gradient(#05050594 0%,#05050514 24% 66%,#050505b3 100%);justify-content:space-between;padding:18px;transition:opacity .18s;display:none;position:absolute;inset:0}.player-frame.is-fullscreen 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option{color:#171717}.player-frame.is-fullscreen .player-menu-caret{color:#ffffffc2}.player-frame.is-fullscreen .player-menu-panel{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#101010f0;border-color:#ffffff29;box-shadow:0 18px 44px #00000057}.player-frame.is-fullscreen .player-menu-option{color:#fff}.player-frame.is-fullscreen .player-menu-option:hover{background:#ffffff1f}.player-frame.is-fullscreen .player-menu-option.is-selected{background:#ffffff38}.player-frame.is-fullscreen .player-settings-panel{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#101010f0;border-color:#ffffff29;box-shadow:0 18px 44px #00000057}.player-frame.is-fullscreen .player-settings-label{color:#ffffffb8}.player-frame.is-fullscreen .player-range,.player-frame.is-fullscreen .player-volume{background:#ffffff3d}.player-frame.is-fullscreen .player-volume-panel{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#101010f0;border-color:#ffffff29;box-shadow:0 18px 44px #00000057}.player-frame.is-fullscreen .player-volume-toggle,.player-frame.is-fullscreen .player-volume-value{color:#fff}.player-frame.is-fullscreen .player-volume-toggle{background:#ffffff1f;border-color:#ffffff24}.player-frame.is-fullscreen .player-range::-webkit-slider-thumb{background:#fff}.player-frame.is-fullscreen .player-volume::-webkit-slider-thumb{background:#fff}.player-frame.is-fullscreen .player-range::-moz-range-thumb{background:#fff}.player-frame.is-fullscreen .player-volume::-moz-range-thumb{background:#fff}.player-frame.is-fullscreen .player-icon-button,.player-frame.is-fullscreen .player-nav-button{color:#fff;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#ffffff1f;border-color:#ffffff24}.player-frame.is-fullscreen 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#0003}.player-watermark--top-right{top:28px;right:28px}.player-watermark--top-left{top:28px;left:28px}.player-watermark--center-left{top:50%;left:28px;transform:translateY(-50%)}.player-watermark--bottom-center{bottom:28px;left:50%;transform:translate(-50%)}.player-watermark--top-center{top:32px;left:50%;transform:translate(-50%)}.player-watermark--bottom-right{bottom:28px;right:28px}.player-watermark--bottom-left{bottom:28px;left:28px}.player-watermark--center-right{top:50%;right:28px;transform:translateY(-50%)}.player-watermark--upper-left{top:22%;left:18%}.player-watermark--upper-center{top:24%;left:50%;transform:translate(-50%)}.player-watermark--upper-right{top:22%;right:18%}.player-watermark--middle-left{top:42%;left:20%}.player-watermark--middle-center{top:50%;left:50%;transform:translate(-50%,-50%)}.player-watermark--middle-right{top:42%;right:20%}.player-watermark--lower-left{bottom:22%;left:18%}.player-watermark--lower-right{bottom:22%;right:18%}.player-state-card{text-align:center;pointer-events:auto;background:#0a0a0ac2;border:1px solid #ffffff24;border-radius:8px;justify-items:center;gap:14px;min-width:min(320px,100% - 32px);padding:20px;display:grid;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.player-error-detail{color:#ffffffc7;gap:6px;max-width:min(420px,100%);font-size:12px;line-height:1.8;display:grid}.player-error-detail strong{color:#fff;font-size:13px}.player-side-panel{gap:16px;padding:18px;display:grid;position:sticky;top:24px}.player-side-head{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.lesson-list{gap:10px;display:grid}.lesson-module{background:#ffffffc7;border:1px solid #e4e6eaeb;border-radius:18px;gap:10px;padding:10px;transition:border-color .16s,box-shadow .16s;display:grid}.lesson-module.is-open{border-color:#0d7b6633;box-shadow:0 14px 30px #1818160f}.lesson-module-toggle{width:100%;color:inherit;cursor:pointer;text-align:right;background:0 0;border:0;align-items:center;gap:12px;padding:6px 4px;display:flex}.lesson-module-toggle-icon{color:#096451;background:#0d7b6614;border-radius:999px;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:18px;font-weight:800;display:inline-flex}.lesson-module-meta{flex:1;gap:4px;min-width:0;display:grid}.lesson-module-meta strong{font-size:15px;line-height:1.45}.lesson-module-meta small{color:var(--muted);font-size:12px;font-weight:720}.lesson-module-items{gap:8px;display:grid}.lesson-list-item{border-radius:var(--radius);background:#ffffffdb;border:1px solid #e4e6eaeb;align-items:flex-start;gap:12px;padding:12px;transition:border-color .16s,transform .16s,box-shadow .16s;display:flex}.lesson-list-item:hover{border-color:#0d7b6647;transform:translateY(-1px);box-shadow:0 12px 26px #18181614}.lesson-list-item.is-active{border-color:#0d7b6661;box-shadow:0 14px 30px #0d7b661a}.lesson-list-icon{color:#096451;background:#0d7b6614;border-radius:999px;flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;display:inline-flex}.lesson-list-icon.is-locked{color:#a2354d;background:#a8354d14}.lesson-list-content{flex:1;gap:4px;min-width:0;display:grid}.lesson-list-content strong{font-size:15px;line-height:1.5}.lesson-list-content small{color:var(--muted);font-size:12px}.lesson-list-progress{color:var(--muted);gap:6px;margin-top:2px;font-size:11px;font-weight:720;display:grid}.lesson-list-empty{border:1px dashed var(--line);border-radius:var(--radius);color:var(--muted);text-align:center;padding:18px}.student-outline-list{gap:12px;margin-top:18px;display:grid}.student-outline-card{background:#ffffffeb;border:1px solid #e4e6eaeb;border-radius:20px;overflow:hidden;box-shadow:0 18px 44px #1818160f}[data-theme=dark] .student-outline-card{background:#13181df0}.student-outline-summary{cursor:pointer;align-items:flex-start;gap:14px;padding:18px 20px;list-style:none;display:flex}.student-outline-summary::-webkit-details-marker{display:none}.student-outline-plus{width:42px;height:42px;color:var(--ink);background:#1717170f;border-radius:14px;flex:0 0 42px;place-items:center;font-size:26px;font-weight:500;line-height:1;display:grid;position:relative}.student-outline-card[open] .student-outline-plus{color:#0000}.student-outline-card[open] .student-outline-plus:before{color:var(--ink);content:"−";place-items:center;display:grid;position:absolute;inset:0}.student-outline-copy{gap:6px;min-width:0;display:grid}.student-outline-copy strong{font-size:17px;font-weight:820}.student-outline-copy small,.student-outline-copy p{color:var(--muted);margin:0;line-height:1.8}.student-outline-body{border-top:1px solid #e4e6eaeb;gap:10px;padding:18px 20px 20px;display:grid}.student-outline-lesson{background:#f7f7f4ad;border:1px solid #e4e6eaeb;border-radius:16px;justify-content:space-between;align-items:center;gap:14px;padding:14px 16px;display:flex}[data-theme=dark] .student-outline-lesson{background:#ffffff0a}.student-outline-lesson-copy{gap:4px;min-width:0;display:grid}.student-outline-lesson-copy strong{font-size:15px;font-weight:800;line-height:1.7}.student-outline-lesson-copy small{color:var(--muted)}.student-outline-lesson-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:10px;display:flex}.student-outline-lesson-disabled{color:var(--muted);font-size:13px;font-weight:760}.media-editor-card{gap:18px;display:grid}.media-editor-head{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.media-editor-status{flex-wrap:wrap;gap:8px;display:flex}.media-editor-metrics{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.media-metric-card{border:1px solid var(--line);border-radius:var(--radius);background:#ffffffbd;gap:6px;padding:14px;display:grid}.media-metric-card span{color:var(--muted);font-size:12px;font-weight:720}.media-metric-card strong{text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:16px;font-weight:760;overflow:hidden}.media-path-grid{gap:12px;display:grid}.media-path-item{gap:8px;display:grid}.media-path-item span{color:#3d4147;font-size:13px;font-weight:720}.media-path-item code{border:1px solid var(--line);border-radius:var(--radius);color:#2a2d31;text-align:left;direction:ltr;background:#fff;padding:12px 14px;overflow-x:auto}.branding-assets-panel{align-content:start;gap:16px;display:grid}.brand-upload-form{border:1px solid var(--line);border-radius:var(--radius);background:#ffffffb8;gap:12px;padding:14px;display:grid}.media-replace-upload{border-top:1px solid var(--line);margin-top:18px;padding-top:18px}.media-library-layout{grid-template-columns:minmax(240px,280px) minmax(0,1fr);gap:16px;margin-top:16px;display:grid}.media-folder-sidebar,.media-library-panel{align-content:start}.media-folder-head,.media-library-toolbar,.media-modal-head{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.media-folder-sidebar{gap:10px;display:grid;position:sticky;top:18px}.media-folder-button{border:1px solid var(--line);width:100%;color:var(--ink);cursor:pointer;text-align:right;background:#ffffffb8;border-radius:14px;justify-content:space-between;align-items:center;gap:12px;padding:12px 14px;display:flex}.media-folder-button span,.media-folder-button strong{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.media-folder-button.is-active{color:#fff;background:#171717;border-color:#101112e0}.media-library-panel{gap:18px;display:grid}.media-library-search{min-width:min(280px,100%)}.media-library-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;display:grid}.media-library-card{border:1px solid var(--line);color:var(--ink);cursor:pointer;text-align:right;background:#fffc;border-radius:18px;gap:10px;padding:12px;transition:transform .16s,box-shadow .16s,border-color .16s;display:grid}.media-library-card:hover{border-color:#14151629;transform:translateY(-2px);box-shadow:0 18px 36px #12141614}.media-library-thumb{aspect-ratio:16/9;background:linear-gradient(135deg,#f1f3f6,#dfe5eb);border-radius:14px;position:relative;overflow:hidden}.media-library-thumb img{object-fit:cover;width:100%;height:100%}.media-library-duration{color:#fff;background:#111213c7;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:760;position:absolute;bottom:10px;left:10px}.media-library-copy{gap:5px;display:grid}.media-library-copy strong,.media-library-copy span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.media-library-copy strong{font-size:14px;font-weight:780}.media-library-copy span,.media-library-meta span{color:var(--muted);font-size:12px;font-weight:720}.media-library-meta{justify-content:space-between;align-items:center;gap:10px;display:flex}.media-library-empty{border:1px dashed var(--line);text-align:center;border-radius:18px;place-items:center;gap:6px;padding:42px 20px;display:grid}.media-modal-backdrop{z-index:60;background:#0c0e1070;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.media-modal{background:#f7f7f4;border:1px solid #dee1e6e6;border-radius:24px;gap:18px;width:min(1120px,100%);max-height:calc(100vh - 40px);padding:22px;display:grid;overflow:auto;box-shadow:0 30px 80px #0e101238}.media-modal-close{border:1px solid var(--line);color:var(--ink);cursor:pointer;background:#fff;border-radius:12px;padding:10px 16px}.media-modal-body{grid-template-columns:minmax(280px,340px) minmax(0,1fr);gap:18px;display:grid}.media-modal-preview{border:1px solid var(--line);aspect-ratio:4/5;background:#fff;border-radius:18px;overflow:hidden}.media-modal-preview img{object-fit:cover;width:100%;height:100%}.media-modal-fallback{width:100%;height:100%;color:var(--muted);place-items:center;font-weight:740;display:grid}.media-modal-details{gap:18px;display:grid}@keyframes spin{to{transform:rotate(360deg)}}.skeleton{background:#e8ebef;border-radius:6px;min-height:16px;position:relative;overflow:hidden}.skeleton:after{content:"";background:linear-gradient(90deg,#0000,#ffffffa6,#0000);animation:1.6s infinite shimmer;position:absolute;inset:0;transform:translate(100%)}@keyframes shimmer{to{transform:translate(-100%)}}.login-shell{grid-template-columns:minmax(0,1fr) minmax(420px,520px);min-height:100vh;display:grid}.login-visual{color:#fff;background-color:#0000;background-image:linear-gradient(135deg,#0e0e0d9e,#09504461),url(https://images.unsplash.com/photo-1516321497487-e288fb19713f?auto=format&fit=crop&w=1600&q=80);background-position:50%;background-repeat:repeat,repeat;background-size:cover;background-attachment:scroll,scroll;background-origin:padding-box,padding-box;background-clip:border-box,border-box;flex-direction:column;justify-content:space-between;min-height:100vh;padding:34px;display:flex}.login-panel{background:var(--surface);align-content:center;gap:24px;padding:42px;display:grid}@media (max-width:1180px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.dashboard-kpi-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.dashboard-grid,.dashboard-grid--triple,.player-layout{grid-template-columns:1fr}.player-side-panel{position:static}.media-editor-metrics{grid-template-columns:1fr}.media-library-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (max-width:840px){.app-frame,.login-shell{grid-template-columns:1fr}.sidebar{z-index:30;overscroll-behavior:contain;width:min(320px,100vw - 20px);max-width:calc(100vw - 20px);height:100vh;transition:transform .2s;position:fixed;top:0;right:0;overflow-y:auto;transform:translate(100%);box-shadow:0 24px 48px #1416182e}.app-frame.is-mobile-nav-open .sidebar{transform:translate(0)}.app-frame.is-mobile-nav-open .sidebar-scrim{opacity:1;pointer-events:auto}.sidebar-mobile-head,.mobile-topbar,.sidebar-scrim{display:flex}.sidebar-mobile-head{justify-content:space-between;align-items:center;gap:12px}.sidebar-brand-desktop{display:none}.sidebar-dismiss,.mobile-menu-button{border:1px solid var(--line);border-radius:var(--radius);width:42px;height:42px;color:var(--ink);cursor:pointer;background:#fff;justify-content:center;align-items:center;display:inline-flex}.sidebar-scrim{z-index:20;cursor:pointer;opacity:0;pointer-events:none;background:#090b0c5c;border:0;transition:opacity .2s;position:fixed;inset:0}.page-shell{padding:16px;overflow-x:hidden}.mobile-topbar{z-index:10;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#f7f7f4eb;border-bottom:1px solid #e4e6eaeb;align-items:center;gap:12px;margin:-16px -16px 18px;padding:14px 16px;position:sticky;top:0}[data-theme=dark] .mobile-topbar{border-bottom-color:var(--line);background:#0d1114eb}.mobile-brand-row{flex:1;min-width:0}.mobile-brand-row span:last-child{min-width:0}.mobile-brand-row .brand-title,.mobile-brand-row .brand-subtitle{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.topbar>:first-child,.page-title,.page-copy{overflow-wrap:anywhere;min-width:0}.topbar{flex-direction:column;align-items:flex-start}.grid-4,.grid-3,.grid-2,.form-grid,.dashboard-kpi-grid{grid-template-columns:1fr}.dashboard-donut-layout{grid-template-columns:1fr;justify-items:center}.dashboard-bar-chart,.dashboard-chart-xaxis{grid-template-columns:repeat(4,minmax(0,1fr))}.panel.panel-pad{-webkit-overflow-scrolling:touch;overflow-x:auto}.table{min-width:680px}.login-visual{min-height:360px}.player-summary,.player-side-head,.media-editor-head,.media-folder-head,.media-library-toolbar,.media-modal-head{flex-direction:column}.player-summary-chip{white-space:normal}.player-toolbar,.media-editor-status{gap:10px}.player-toolbar-main,.player-toolbar-side{gap:8px}.player-select-field{min-height:40px;padding:0 10px}.player-menu-trigger{min-width:58px}.player-icon-button,.player-nav-button{width:40px;height:40px}.player-volume-panel{min-width:168px;padding:10px 12px}.player-watermark{max-width:min(220px,100% - 28px);font-size:12px}.file-picker-shell{flex-direction:column;align-items:stretch}.file-picker-button{width:100%}.upload-progress-head,.upload-progress-meta{flex-direction:column;align-items:flex-start;gap:6px}.media-library-layout,.media-modal-body{grid-template-columns:1fr}.media-folder-sidebar{position:static}.media-library-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}