#ts-app{--sv-bg: var(--bg-dark, #0f0f1a);--sv-bg-card: var(--bg-card, #1a1a2e);--sv-bg-hover: var(--bg-card-hover, #252540);--sv-bg-active: #2a2a50;--sv-border: var(--border-color, #2a2a45);--sv-text: var(--text-primary, #e0e0ee);--sv-text-sub: var(--text-secondary, #8888aa);--sv-accent: var(--accent-blue, #6c8cff);--sv-accent-dim: rgba(108, 140, 255, .12);--sv-green: var(--accent-green, #4caf80);--sv-green-dim: rgba(76, 175, 128, .15);--sv-radius: var(--radius-md, 8px);--sv-radius-sm: var(--radius-sm, 5px)}#ts-app .sv-workspace{display:flex;height:calc(100vh - 56px);overflow:hidden}#ts-app .sv-col-courses{width:220px}#ts-app .sv-col-curriculum{width:280px}#ts-app .sv-col-detail{flex:1;min-width:0}#ts-app .sv-resizer{width:5px;cursor:col-resize;background:transparent;position:relative;flex-shrink:0;z-index:10}#ts-app .sv-resizer:after{content:"";position:absolute;top:0;bottom:0;left:2px;width:1px;background:var(--sv-border);transition:background .15s,width .15s,left .15s}#ts-app .sv-resizer:hover:after,#ts-app .sv-resizer.dragging:after{width:3px;left:1px;background:var(--sv-accent)}#ts-app .sv-col{display:flex;flex-direction:column;overflow:hidden;flex-shrink:0}#ts-app .sv-col-detail{flex-shrink:1}#ts-app .sv-col-header{padding:10px 16px;font-size:.75rem;font-weight:600;color:var(--sv-text-sub);text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid var(--sv-border);flex-shrink:0;display:flex;align-items:center;justify-content:space-between}#ts-app .sv-col-title{flex:1}#ts-app .sv-col-collapse{background:none;border:none;color:var(--sv-text-sub);font-size:.7rem;cursor:pointer;padding:2px 4px;border-radius:3px;transition:color .15s,background .15s;flex-shrink:0}#ts-app .sv-col-collapse:hover{color:var(--sv-text);background:var(--sv-bg-hover)}#ts-app .sv-col-tab{display:flex;flex-direction:column;align-items:center;gap:4px;padding:12px 4px;background:var(--sv-bg-card);border:none;border-right:1px solid var(--sv-border);color:var(--sv-text-sub);cursor:pointer;transition:background .15s,color .15s;flex-shrink:0;writing-mode:vertical-rl}#ts-app .sv-col-tab:hover{background:var(--sv-bg-hover);color:var(--sv-text)}#ts-app .sv-col-tab-arrow{font-size:.6rem;writing-mode:horizontal-tb}#ts-app .sv-col-tab-label{font-size:.72rem;font-weight:600;letter-spacing:.1em}#ts-app .sv-col-scroll{flex:1;overflow-y:auto;padding:6px 0}#ts-app .sv-col-scroll::-webkit-scrollbar{width:4px}#ts-app .sv-col-scroll::-webkit-scrollbar-thumb{background:var(--sv-border);border-radius:2px}#ts-app .sv-course-item{display:flex;align-items:flex-start;gap:10px;padding:10px 16px;cursor:pointer;border-left:3px solid transparent;transition:background .15s,border-color .15s}#ts-app .sv-course-item:hover{background:var(--sv-bg-hover)}#ts-app .sv-course-item.active{background:var(--sv-accent-dim);border-left-color:var(--sv-accent)}#ts-app .sv-course-icon{width:36px;height:36px;border-radius:var(--sv-radius-sm);background:var(--sv-bg-hover);display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0}#ts-app .sv-course-info{flex:1;min-width:0}#ts-app .sv-course-name{font-size:.85rem;font-weight:600;word-break:break-word}#ts-app .sv-course-meta{font-size:.72rem;color:var(--sv-text-sub);margin-top:2px}#ts-app .sv-progress-mini{width:100%;height:3px;background:var(--sv-border);border-radius:2px;margin-top:4px;overflow:hidden}#ts-app .sv-progress-mini-fill{height:100%;background:var(--sv-green);border-radius:2px;transition:width .3s}#ts-app .sv-section-group{padding:4px 0}#ts-app .sv-section-group+.sv-section-group{border-top:1px solid var(--sv-border)}#ts-app .sv-section-header{display:flex;align-items:flex-start;gap:8px;padding:10px 16px 6px;font-size:.78rem;font-weight:600;color:var(--sv-text-sub);cursor:pointer}#ts-app .sv-section-title{flex:1;word-break:break-word}#ts-app .sv-section-header:hover{color:var(--sv-text)}#ts-app .sv-section-num{width:22px;height:22px;border-radius:50%;background:var(--sv-bg-hover);display:flex;align-items:center;justify-content:center;font-size:.68rem;flex-shrink:0;margin-top:1px}#ts-app .sv-section-header.active .sv-section-num{background:var(--sv-accent);color:#fff}#ts-app .sv-section-count{font-size:.68rem;color:var(--sv-text-sub)}#ts-app .sv-lesson-item{display:flex;align-items:flex-start;gap:8px;padding:7px 16px 7px 46px;font-size:.82rem;cursor:pointer;transition:background .15s;border-left:3px solid transparent}#ts-app .sv-lesson-item:hover{background:var(--sv-bg-hover)}#ts-app .sv-lesson-item.active{background:var(--sv-accent-dim);border-left-color:var(--sv-accent);font-weight:600}#ts-app .sv-lesson-item.completed .sv-lesson-check{color:var(--sv-green)}#ts-app .sv-lesson-check{width:18px;height:18px;border-radius:50%;border:1.5px solid var(--sv-border);display:flex;align-items:center;justify-content:center;font-size:.65rem;flex-shrink:0;color:transparent;margin-top:2px}#ts-app .sv-lesson-item.completed .sv-lesson-check{border-color:var(--sv-green);background:var(--sv-green-dim);color:var(--sv-green)}#ts-app .sv-lesson-label{flex:1;word-break:break-word}#ts-app .sv-lesson-type{font-size:.65rem;padding:1px 5px;border-radius:3px;background:var(--sv-bg-hover);color:var(--sv-text-sub);flex-shrink:0;margin-top:2px}#ts-app .sv-detail{padding:24px;overflow-y:auto;height:100%}#ts-app .sv-player-wrap{position:relative;width:100%;background:var(--sv-bg-card);border-radius:var(--sv-radius);border:1px solid var(--sv-border);display:flex;align-items:center;justify-content:center;margin-bottom:16px;cursor:pointer;overflow:hidden}#ts-app .sv-player-wrap:hover .sv-expand-hint{opacity:1}#ts-app .sv-player-play{font-size:2.5rem;color:var(--sv-text-sub)}#ts-app .sv-expand-hint{position:absolute;top:8px;right:8px;background:#0009;color:#fff;font-size:.7rem;padding:3px 8px;border-radius:4px;opacity:0;transition:opacity .2s;pointer-events:none}#ts-app .sv-detail-title{font-size:1.15rem;font-weight:700;margin-bottom:6px}#ts-app .sv-detail-section-name{font-size:.8rem;color:var(--sv-text-sub);margin-bottom:16px}#ts-app .sv-detail-tabs{display:flex;gap:0;border-bottom:1px solid var(--sv-border);margin-bottom:16px}#ts-app .sv-tab{padding:8px 16px;font-size:.82rem;color:var(--sv-text-sub);background:none;border:none;cursor:pointer;border-bottom:2px solid transparent;transition:color .15s;font-family:inherit}#ts-app .sv-tab:hover{color:var(--sv-text)}#ts-app .sv-tab.active{color:var(--sv-accent);border-bottom-color:var(--sv-accent)}#ts-app .sv-detail-content{font-size:.88rem;color:var(--sv-text-sub);line-height:1.7;white-space:pre-line}#ts-app .sv-detail-content p+p{margin-top:8px}#ts-app .sv-detail-content strong{display:block;color:var(--sv-text);font-size:.95rem;margin-top:18px;margin-bottom:4px;padding-bottom:4px;border-bottom:1px solid var(--sv-border)}#ts-app .sv-detail-content strong:first-child{margin-top:0}#ts-app .sv-detail-content .guide-code-block{position:relative;background:#1a1a2e;border:1px solid var(--sv-border);border-radius:6px;padding:12px 14px;margin:8px 0;font-family:Consolas,Monaco,Courier New,monospace;font-size:.82rem;line-height:1.5;color:#e0e0e0;white-space:pre;overflow-x:auto}#ts-app .sv-detail-content .guide-code-copy{position:absolute;top:6px;right:6px;background:#ffffff1f;border:1px solid rgba(255,255,255,.2);border-radius:4px;padding:3px 10px;font-size:.72rem;color:#ccc;cursor:pointer;transition:background .15s}#ts-app .sv-detail-content .guide-code-copy:hover{background:#ffffff40}#ts-app .sv-detail-content .guide-code-copy.copied{background:var(--sv-green);color:#fff}#ts-app .sv-detail-content .guide-inline-code{background:#ffffff14;border:1px solid var(--sv-border);border-radius:3px;padding:1px 6px;font-family:Consolas,monospace;font-size:.82rem;color:#e8c36e;white-space:nowrap}#ts-app .sv-progress-summary{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--sv-bg-card);border-radius:var(--sv-radius);margin-bottom:16px;border:1px solid var(--sv-border)}#ts-app .sv-progress-bar{flex:1;height:6px;background:var(--sv-border);border-radius:3px;overflow:hidden}#ts-app .sv-progress-fill{height:100%;background:var(--sv-green);border-radius:3px}#ts-app .sv-progress-text{font-size:.78rem;color:var(--sv-green);font-weight:600;white-space:nowrap}#ts-app .sv-modal-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#000000d9;z-index:9999;align-items:center;justify-content:center;padding:24px}#ts-app .sv-modal-overlay.open{display:flex}#ts-app .sv-modal-video{position:relative;width:100%;max-width:960px;aspect-ratio:16/9;background:#000;border-radius:var(--sv-radius);display:flex;align-items:center;justify-content:center;font-size:3rem;color:var(--sv-text-sub)}#ts-app .sv-modal-close{position:absolute;top:-40px;right:0;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:4px 10px;opacity:.7;transition:opacity .15s}#ts-app .sv-modal-close:hover{opacity:1}#ts-app .sv-modal-title{position:absolute;bottom:-36px;left:0;color:#ccc;font-size:.88rem}#ts-app .sv-course-select-wrap{display:none}#ts-app .sv-course-select-wrap{padding:10px 12px;border-bottom:1px solid var(--sv-border)}#ts-app .sv-course-select{width:100%;padding:8px 10px;background:var(--sv-bg-hover);color:var(--sv-text);border:1px solid var(--sv-border);border-radius:var(--sv-radius-sm);font-size:.85rem;cursor:pointer;font-family:inherit}#ts-app .sv-course-select:focus{outline:none;border-color:var(--sv-accent)}#ts-app .sv-mobile-accordion{display:contents}#ts-app .sv-mobile-toggle{display:none}#ts-app .sv-mobile-body{display:contents}#ts-app .sv-empty{padding:40px 20px;text-align:center;color:var(--sv-text-sub);font-size:.9rem}@media(max-width:959px){#ts-app .sv-col-courses,#ts-app .sv-resizer-0{display:none}#ts-app .sv-col-curriculum{width:300px}#ts-app .sv-course-select-wrap{display:block}}@media(max-width:599px){#ts-app .sv-workspace{display:flex;flex-direction:column;height:auto;overflow:visible}#ts-app .sv-col-detail{order:1}#ts-app .sv-col-curriculum{order:2}#ts-app .sv-col-courses,#ts-app .sv-col-tab,#ts-app .sv-resizer{display:none}#ts-app .sv-col-curriculum{width:100%!important;border-bottom:1px solid var(--sv-border);max-height:none;overflow:visible}#ts-app .sv-col-detail{width:100%!important}#ts-app .sv-col-scroll{overflow:visible}#ts-app .sv-detail{padding:16px}#ts-app .sv-mobile-accordion{display:block}#ts-app .sv-mobile-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;padding:12px 16px;background:var(--sv-bg-card);border:none;color:var(--sv-text);font-size:.88rem;font-weight:600;cursor:pointer;border-bottom:1px solid var(--sv-border);font-family:inherit}#ts-app .sv-mobile-toggle-arrow{font-size:.7rem;color:var(--sv-text-sub);transition:transform .2s}#ts-app .sv-mobile-toggle.open .sv-mobile-toggle-arrow{transform:rotate(180deg)}#ts-app .sv-mobile-body{display:none}#ts-app .sv-mobile-body.open{display:block}#ts-app .sv-lesson-item{padding-left:36px}#ts-app .sv-col-curriculum>.sv-col-header{display:none}}@media(min-width:600px){#ts-app .sv-mobile-toggle{display:none}#ts-app .sv-mobile-body{display:block!important}}body{margin:0}#ts-app *,#ts-app *:before,#ts-app *:after{margin:0;padding:0;box-sizing:border-box}#ts-app{--bg-dark: #1a1a2e;--bg-darker: #16162a;--bg-card: #222240;--bg-card-hover: #2a2a4a;--bg-input: #2c2c4a;--text-primary: #f0f0f5;--text-secondary: #a0a0b8;--text-muted: #707088;--accent-blue: #4a9eff;--accent-blue-hover: #3a8eef;--accent-green: #4ecb71;--accent-red: #e74c3c;--accent-red-bg: rgba(231, 76, 60, .1);--accent-red-border: rgba(231, 76, 60, .3);--border-color: #333355;--border-light: #444466;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--font-sans: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", sans-serif;font-family:var(--font-sans);background:var(--bg-dark);color:var(--text-primary);min-height:100vh;line-height:1.6;display:flex;flex-direction:column}#ts-app a{color:inherit;text-decoration:none}#ts-app button{font-family:var(--font-sans)}#ts-app .ts-error-text{color:#e74c3c;padding:8px 0;font-size:.9rem}#ts-app .ts-not-found{text-align:center;padding-top:80px}#ts-app .ts-status{padding:40px 24px;text-align:center;font-size:.95rem}#ts-app .ts-status--loading{color:var(--text-muted)}#ts-app .ts-status--error{color:#e74c3c}#ts-app .ts-login-screen{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:24px;background:linear-gradient(135deg,#0a0a1a,#1a1a3e,#0a0a1a)}#ts-app .ts-login-card{background:#ffffff0a;border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:48px 40px;text-align:center;max-width:380px;width:100%;box-shadow:0 8px 32px #0006}#ts-app .ts-login-logo{margin-bottom:32px}#ts-app .ts-login-logo-icon{font-size:3rem;display:block;margin-bottom:8px}#ts-app .ts-login-title{font-size:1.8rem;font-weight:800;color:#fff;margin:0;letter-spacing:.05em}#ts-app .ts-login-subtitle{font-size:.85rem;color:#ffffff80;margin:4px 0 0}#ts-app .ts-login-message{font-size:.82rem;color:#e8c36e;margin-bottom:20px;padding:8px 12px;background:#e8c36e1a;border:1px solid rgba(232,195,110,.2);border-radius:6px}#ts-app .ts-login-actions{display:flex;flex-direction:column;gap:12px;margin-bottom:28px}#ts-app .ts-login-btn{display:block;padding:14px 20px;border-radius:8px;font-size:.95rem;font-weight:600;text-decoration:none;text-align:center;transition:opacity .15s,transform .1s}#ts-app .ts-login-btn:hover{opacity:.9}#ts-app .ts-login-btn:active{transform:scale(.98)}#ts-app .ts-login-btn-primary{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;border:none}#ts-app .ts-login-btn-secondary{background:transparent;color:#ffffffb3;border:1px solid rgba(255,255,255,.2)}#ts-app .ts-login-btn-secondary:hover{background:#ffffff0d;color:#fff}#ts-app .ts-login-footer-text{font-size:.7rem;color:#ffffff4d;margin:0}#ts-app .ts-header{background:var(--bg-darker);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100}#ts-app .header-inner{padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px}#ts-app .header-logo{display:flex;align-items:center;gap:8px;flex-shrink:0}#ts-app .logo-icon{font-size:1.4rem}#ts-app .logo-text{font-size:1.1rem;font-weight:700;letter-spacing:.02em}#ts-app .header-user{display:flex;align-items:center;gap:8px;flex-shrink:0}#ts-app .header-profile-link{display:flex;align-items:center;gap:6px;padding:4px 8px;border-radius:var(--radius-sm);transition:background .2s}#ts-app .header-profile-link:hover{background:var(--bg-card-hover)}#ts-app .user-avatar{width:32px;height:32px;border-radius:50%;background:var(--bg-card);display:flex;align-items:center;justify-content:center;font-size:1.1rem;line-height:1;overflow:hidden;flex-shrink:0}#ts-app .user-avatar-img{width:100%;height:100%;object-fit:cover}#ts-app .user-display-name{font-size:.82rem;color:var(--text-secondary);max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#ts-app .header-nav-link{font-size:.82rem;color:var(--text-secondary);padding:6px 12px;border:1px solid var(--border-color);border-radius:var(--radius-sm);transition:color .2s,border-color .2s}#ts-app .header-nav-link:hover{color:var(--accent-blue);border-color:var(--accent-blue)}#ts-app .header-logout-btn{font-size:.78rem;color:var(--text-muted);background:none;border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:5px 10px;cursor:pointer;transition:color .15s,border-color .15s;font-family:inherit}#ts-app .header-logout-btn:hover{color:#ff6b6b;border-color:#ff6b6b}#ts-app .ts-footer{border-top:1px solid var(--border-color);text-align:center;padding:20px;margin-top:auto}#ts-app .footer-guide-link{display:inline-block;font-size:.82rem;color:var(--text-secondary);margin-bottom:8px;transition:color .2s}#ts-app .footer-guide-link:hover{color:var(--accent-blue)}#ts-app .footer-text{font-size:.8rem;color:var(--text-muted)}#ts-app .ts-main{max-width:1200px;margin:0 auto;padding:24px;flex:1}#ts-app .page-hero{margin-bottom:24px}#ts-app .page-title{font-size:clamp(1.5rem,4vw,2rem);font-weight:700;margin-bottom:8px}#ts-app .page-subtitle{font-size:1rem;color:var(--text-secondary)}#ts-app .instructor-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:24px}#ts-app .instructor-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:28px;display:flex;gap:20px;transition:background .2s,border-color .2s;cursor:pointer}#ts-app .instructor-card:hover{background:var(--bg-card-hover);border-color:var(--accent-blue)}#ts-app .instructor-avatar{flex-shrink:0}#ts-app .avatar-letter{width:56px;height:56px;border-radius:50%;background:var(--accent-blue);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.4rem;font-weight:700}#ts-app .instructor-name{font-size:1.2rem;font-weight:600;margin-bottom:2px}#ts-app .instructor-title{font-size:.85rem;color:var(--text-secondary);margin-bottom:8px}#ts-app .instructor-desc{font-size:.9rem;color:var(--text-secondary);margin-bottom:12px;line-height:1.5}#ts-app .instructor-meta{display:flex;gap:16px}#ts-app .meta-item{font-size:.8rem;color:var(--text-muted);display:flex;align-items:center;gap:4px}#ts-app .meta-icon{font-size:.9rem}#ts-app .instructor-profile{display:flex;align-items:center;gap:24px;margin-bottom:48px;padding-bottom:32px;border-bottom:1px solid var(--border-color)}#ts-app .profile-avatar .avatar-letter{width:72px;height:72px;font-size:1.8rem}#ts-app .profile-name{font-size:1.5rem;font-weight:700;margin-bottom:2px}#ts-app .profile-title{font-size:.9rem;color:var(--text-secondary);margin-bottom:8px}#ts-app .profile-bio{font-size:.9rem;color:var(--text-secondary);max-width:600px}#ts-app .section-heading{font-size:1.2rem;font-weight:600;margin-bottom:20px}#ts-app .course-grid{display:grid;grid-template-columns:1fr;gap:16px}#ts-app .course-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);display:flex;overflow:hidden;transition:background .2s,border-color .2s}#ts-app .course-card:hover{background:var(--bg-card-hover);border-color:var(--accent-blue)}#ts-app .course-thumbnail{width:140px;min-height:120px;background:var(--bg-input);display:flex;align-items:center;justify-content:center;flex-shrink:0}#ts-app .thumbnail-icon{font-size:2.5rem}#ts-app .course-body{padding:20px;flex:1;display:flex;flex-direction:column}#ts-app .course-title{font-size:1.1rem;font-weight:600;margin-bottom:6px}#ts-app .course-desc{font-size:.85rem;color:var(--text-secondary);margin-bottom:12px;line-height:1.5;flex:1}#ts-app .course-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap}#ts-app .course-progress{display:flex;align-items:center;gap:8px;margin-left:auto}#ts-app .progress-bar{width:80px;height:6px;background:var(--bg-input);border-radius:3px;overflow:hidden}#ts-app .progress-fill{height:100%;background:var(--accent-green);border-radius:3px;display:block;transition:width .3s}#ts-app .progress-text{font-size:.75rem;color:var(--text-muted);white-space:nowrap}#ts-app main{flex:1}#ts-app .lesson-heading{max-width:1200px;margin:0 auto;padding:28px 24px 0}#ts-app .lesson-title{font-size:clamp(1.3rem,3.5vw,1.8rem);font-weight:700}#ts-app .player-area{max-width:1200px;margin:20px auto 0;padding:0 24px;display:flex;gap:20px}#ts-app .player-left{flex:1;min-width:0}#ts-app .video-player{width:100%;aspect-ratio:16 / 9;background:#000;border-radius:var(--radius-md);overflow:hidden;position:relative}#ts-app .subtitle-overlay{position:absolute;bottom:60px;left:50%;transform:translate(-50%);max-width:85%;text-align:center;pointer-events:none;z-index:10}#ts-app .subtitle-text{display:inline-block;background:#000000bf;color:#fff;font-size:1rem;line-height:1.5;padding:4px 14px;border-radius:4px}#ts-app .subtitle-toggle{position:absolute;bottom:12px;right:12px;background:#0009;color:#fff;border:1px solid rgba(255,255,255,.3);border-radius:4px;padding:4px 8px;font-size:.75rem;font-weight:700;cursor:pointer;z-index:11;transition:background .2s}#ts-app .subtitle-toggle:hover{background:#000c}#ts-app .video-element{width:100%;height:100%;object-fit:contain}#ts-app .video-placeholder{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--text-muted)}#ts-app .play-icon{font-size:3rem;opacity:.5}#ts-app .player-right{width:280px;flex-shrink:0}#ts-app .lesson-list{display:flex;flex-direction:column;gap:8px;max-height:400px;overflow-y:auto}#ts-app .lesson-item{display:flex;align-items:center;gap:8px;padding:12px 16px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:.88rem;color:var(--text-primary);transition:background .2s,border-color .2s;cursor:pointer;text-align:left}#ts-app .lesson-item:hover{background:var(--bg-card-hover);border-color:var(--border-light)}#ts-app .lesson-item.is-active{background:var(--bg-card-hover);border-color:var(--accent-blue)}#ts-app .lesson-item.is-completed{opacity:.7}#ts-app .lesson-num{color:var(--text-muted);font-weight:600;flex-shrink:0}#ts-app .lesson-label{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#ts-app .content-area{max-width:1200px;margin:24px auto 0;padding:0 24px}#ts-app .content-left{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden}#ts-app .content-tabs{display:flex;padding:4px 20px 0}#ts-app .tab-btn{background:none;border:none;color:var(--text-secondary);font-size:.9rem;padding:12px 20px;cursor:pointer;border-bottom:2px solid transparent;transition:color .2s,border-color .2s}#ts-app .tab-btn:hover{color:var(--text-primary)}#ts-app .tab-btn.is-active{color:var(--text-primary);border-bottom-color:var(--accent-blue)}#ts-app .tab-divider{height:1px;background:var(--border-color)}#ts-app .tab-panel{min-height:300px}#ts-app .ai-chat-toolbar{display:flex;gap:0;padding:8px 20px 0;border-bottom:1px solid var(--border-color)}#ts-app .ai-toolbar-btn{background:none;border:none;padding:8px 16px;font-size:.82rem;font-family:var(--font-sans);color:var(--text-muted);cursor:pointer;border-bottom:2px solid transparent;transition:color .15s,border-color .15s}#ts-app .ai-toolbar-btn:hover{color:var(--text-secondary)}#ts-app .ai-toolbar-btn.is-active{color:var(--accent-blue);border-bottom-color:var(--accent-blue);font-weight:600}#ts-app .ai-chat-body{flex:1;padding:20px;min-height:200px;overflow-y:auto;display:flex;flex-direction:column;gap:12px}#ts-app .ai-message{font-size:.9rem;color:var(--text-secondary);line-height:1.6}#ts-app .ai-message.user-message{align-self:flex-end;background:var(--accent-blue);color:#fff;padding:8px 14px;border-radius:var(--radius-sm);max-width:85%}#ts-app .ai-message.assistant-message{align-self:flex-start;background:var(--bg-input);padding:10px 14px;border-radius:var(--radius-sm);max-width:90%;white-space:pre-wrap}#ts-app .ai-source-label{display:inline-block;font-size:.72rem;font-weight:600;padding:2px 8px;border-radius:10px;margin-top:6px}#ts-app .ai-source-label.curriculum{background:#4caf5026;color:#4caf50}#ts-app .ai-source-label.web-search{background:#2196f326;color:#2196f3}#ts-app .ai-source-label.mixed{background:#ff980026;color:#ff9800}#ts-app .ai-chat-input{display:flex;gap:8px;padding:16px 20px;border-top:1px solid var(--border-color)}#ts-app .chat-input{flex:1;background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:10px 14px;color:var(--text-primary);font-size:.88rem;font-family:var(--font-sans);outline:none;transition:border-color .2s}#ts-app .chat-input:focus{border-color:var(--accent-blue)}#ts-app .chat-input::placeholder{color:var(--text-muted)}#ts-app .chat-send{background:var(--accent-blue);color:#fff;border:none;border-radius:var(--radius-sm);padding:10px 20px;font-size:.88rem;font-weight:600;cursor:pointer;transition:background .2s}#ts-app .chat-send:hover{background:var(--accent-blue-hover)}#ts-app .chat-send:disabled{opacity:.5;cursor:not-allowed}#ts-app .memo-area{width:100%;min-height:300px;padding:20px;background:transparent;border:none;color:var(--text-primary);font-size:.9rem;font-family:var(--font-sans);line-height:1.7;resize:vertical;outline:none}#ts-app .memo-area::placeholder{color:var(--text-muted)}#ts-app .guide-panel{padding:20px;min-height:300px}#ts-app .guide-content{font-size:.92rem;color:var(--text-primary);line-height:1.8}#ts-app .guide-content code{background:var(--bg-input);padding:2px 6px;border-radius:3px;font-size:.85rem;font-family:Consolas,Monaco,monospace}#ts-app .guide-content strong{color:var(--accent-blue)}#ts-app .guide-empty{padding:40px 20px;text-align:center;color:var(--text-muted);font-size:.9rem}#ts-app .slide-player{width:100%;background:#000;border-radius:var(--radius-md);overflow:hidden;display:flex;flex-direction:column}#ts-app .slide-image-area{width:100%;aspect-ratio:16 / 9;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}#ts-app .slide-image{width:100%;height:100%;object-fit:contain}#ts-app .slide-empty{color:var(--text-muted);font-size:.9rem}#ts-app .slide-nav{display:flex;align-items:center;justify-content:center;gap:8px;padding:8px 10px;background:#000000b3;flex-shrink:0;flex-wrap:wrap}#ts-app .slide-nav-btn{background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-primary);border-radius:var(--radius-sm);padding:6px 16px;cursor:pointer;font-size:.85rem;transition:background .2s}#ts-app .slide-nav-btn:hover{background:var(--bg-card-hover)}#ts-app .slide-nav-btn:disabled{opacity:.3;cursor:not-allowed}#ts-app .slide-counter{color:var(--text-secondary);font-size:.85rem;min-width:60px;text-align:center}#ts-app .slide-audio-btn{font-size:1rem;min-width:36px;padding:6px 10px}#ts-app .slide-autoplay-btn{font-size:.78rem;font-weight:600;padding:6px 12px;background:var(--bg-input);border:1px solid var(--border-color);transition:background .2s,border-color .2s}#ts-app .slide-autoplay-btn.is-active{background:#4a9eff26;border-color:var(--accent-blue);color:var(--accent-blue)}#ts-app .slide-fullscreen-btn{font-size:1.1rem;min-width:36px;padding:6px 10px}#ts-app .slide-audio-loading{position:absolute;bottom:12px;left:50%;transform:translate(-50%);background:#000000b3;color:#fff;padding:4px 12px;border-radius:4px;font-size:.75rem}#ts-app .slide-fullscreen-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#000;z-index:9999;display:flex;align-items:center;justify-content:center}#ts-app .slide-player--fullscreen{width:100%;height:100%;max-width:none;aspect-ratio:auto;border-radius:0;background:#000}#ts-app .slide-player--fullscreen .slide-image-area{flex:1}#ts-app .slide-player--fullscreen .slide-image{max-width:100%;max-height:calc(100vh - 120px);object-fit:contain}#ts-app .slide-player--fullscreen .slide-nav{background:#000c;padding:12px 24px}#ts-app .slide-narration--fullscreen{position:absolute;bottom:60px;left:50%;transform:translate(-50%);max-width:80%;background:#000000bf;color:#fff;padding:10px 20px;border-radius:8px;font-size:1.1rem;line-height:1.6;text-align:center}#ts-app .audio-player-container{width:100%;height:100%;background:var(--bg-darker, #111);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px}#ts-app .audio-icon{font-size:4rem;opacity:.5}#ts-app .audio-element{width:80%;max-width:400px}#ts-app .slide-narration{padding:16px 20px;font-size:.92rem;color:var(--text-primary);line-height:1.8;background:var(--bg-card);border-top:1px solid var(--border-color);max-height:150px;overflow-y:auto}#ts-app .material-empty{padding:40px 20px;text-align:center;color:var(--text-muted);font-size:.9rem}#ts-app .material-list{padding:20px;display:flex;flex-direction:column;gap:8px}#ts-app .material-item{padding:10px 14px;background:var(--bg-input);border-radius:var(--radius-sm);font-size:.88rem;transition:background .2s}#ts-app .material-item:hover{background:var(--bg-card-hover)}#ts-app .curriculum-section{max-width:1200px;margin:48px auto 0;padding:0 24px}#ts-app .curriculum-heading{font-size:1.3rem;font-weight:700;margin-bottom:12px}#ts-app .curriculum-divider{height:2px;background:var(--text-primary);margin-bottom:24px}#ts-app .curriculum-list{display:flex;flex-direction:column;gap:12px}#ts-app .curriculum-item{font-size:.95rem;color:var(--text-primary);display:flex;align-items:baseline;gap:4px;padding:4px 0;background:none;border:none;cursor:pointer;text-align:left;transition:color .2s}#ts-app .curriculum-item:hover{color:var(--accent-blue)}#ts-app .curriculum-item.is-current{color:var(--accent-blue);font-weight:600}#ts-app .curriculum-num{font-weight:600;flex-shrink:0}#ts-app .profile-page{max-width:500px;margin:0 auto}#ts-app .profile-header{margin-bottom:24px}#ts-app .profile-back-link{font-size:.85rem;color:var(--text-secondary)}#ts-app .profile-back-link:hover{color:var(--accent-blue)}#ts-app .profile-title{font-size:1.3rem;font-weight:700;margin-top:8px}#ts-app .profile-message{background:var(--accent-blue);color:#fff;padding:10px 16px;border-radius:var(--radius-sm);font-size:.88rem;margin-bottom:16px;text-align:center}#ts-app .profile-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:24px}#ts-app .profile-field{margin-bottom:20px}#ts-app .profile-label{display:block;font-size:.85rem;font-weight:600;color:var(--text-secondary);margin-bottom:8px}#ts-app .profile-avatar-area{display:flex;align-items:center;gap:16px}#ts-app .profile-avatar-preview{width:80px;height:80px;border-radius:50%;overflow:hidden;background:var(--bg-input);display:flex;align-items:center;justify-content:center;flex-shrink:0}#ts-app .profile-avatar-img{width:100%;height:100%;object-fit:cover}#ts-app .profile-avatar-initial{font-size:2rem;font-weight:700;color:var(--text-muted)}#ts-app .profile-avatar-actions{display:flex;flex-direction:column;gap:6px}#ts-app .profile-upload-btn{display:inline-block;background:var(--accent-blue);color:#fff;border-radius:var(--radius-sm);padding:6px 14px;font-size:.82rem;font-weight:600;cursor:pointer;transition:background .2s;text-align:center}#ts-app .profile-upload-btn:hover{background:var(--accent-blue-hover)}#ts-app .profile-remove-btn{background:none;border:1px solid var(--border-color);color:var(--text-secondary);border-radius:var(--radius-sm);padding:4px 12px;font-size:.78rem;cursor:pointer;transition:color .2s,border-color .2s}#ts-app .profile-remove-btn:hover{color:var(--accent-red);border-color:var(--accent-red)}#ts-app .profile-hint{font-size:.72rem;color:var(--text-muted)}#ts-app .profile-input{width:100%;background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:10px 14px;color:var(--text-primary);font-size:.95rem;font-family:var(--font-sans);outline:none;transition:border-color .2s}#ts-app .profile-input:focus{border-color:var(--accent-blue)}#ts-app .profile-textarea{width:100%;background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:10px 14px;color:var(--text-primary);font-size:.9rem;font-family:var(--font-sans);outline:none;resize:vertical;transition:border-color .2s}#ts-app .profile-textarea:focus{border-color:var(--accent-blue)}#ts-app .profile-save-btn{width:100%;background:var(--accent-blue);color:#fff;border:none;border-radius:var(--radius-sm);padding:12px;font-size:.95rem;font-weight:600;cursor:pointer;transition:background .2s}#ts-app .profile-save-btn:hover{background:var(--accent-blue-hover)}#ts-app .profile-save-btn:disabled{opacity:.5;cursor:not-allowed}#ts-app .guide-page-header{margin-bottom:24px}#ts-app .student-guide{max-width:700px;display:flex;flex-direction:column;gap:8px}#ts-app .student-guide-section{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden}#ts-app .student-guide-section.is-open{border-color:var(--accent-blue)}#ts-app .student-guide-header{width:100%;display:flex;align-items:center;justify-content:space-between;padding:16px 20px;background:none;border:none;color:var(--text-primary);font-size:1rem;font-weight:600;font-family:var(--font-sans);cursor:pointer;transition:background .15s}#ts-app .student-guide-header:hover{background:var(--bg-card-hover)}#ts-app .student-guide-chevron{font-size:1.2rem;color:var(--text-muted);flex-shrink:0}#ts-app .student-guide-body{padding:0 20px 20px}#ts-app .student-guide-content p{font-size:.9rem;color:var(--text-secondary);line-height:1.7;margin-bottom:8px}#ts-app .student-guide-content h4{font-size:.95rem;font-weight:600;color:var(--text-primary);margin-top:14px;margin-bottom:6px}#ts-app .student-guide-content ul,#ts-app .student-guide-content ol{padding-left:20px;margin-bottom:10px}#ts-app .student-guide-content li{font-size:.88rem;color:var(--text-secondary);line-height:1.7;margin-bottom:3px}#ts-app .student-guide-content strong{color:var(--text-primary)}#ts-app .student-guide-audio-btn{display:inline-flex;align-items:center;gap:6px;margin-top:12px;padding:8px 18px;background:var(--bg-input);border:1px solid var(--border-color);border-radius:20px;color:var(--text-secondary);font-size:.82rem;font-family:var(--font-sans);cursor:pointer;transition:border-color .2s,color .2s}#ts-app .student-guide-audio-btn:hover{border-color:var(--accent-blue);color:var(--accent-blue)}#ts-app .student-guide-audio-btn:disabled{opacity:.6;cursor:wait}#ts-app .req-page{max-width:700px;margin:0 auto;padding:24px 16px 100px}#ts-app .req-header{margin-bottom:24px}#ts-app .req-title{font-size:1.3rem;font-weight:700;color:var(--text-main);margin:8px 0 4px}#ts-app .req-subtitle{font-size:.82rem;color:var(--text-main)}#ts-app .req-loading,#ts-app .req-empty{text-align:center;color:var(--text-main);padding:40px 0;font-size:.88rem}#ts-app .req-list{display:flex;flex-direction:column;gap:12px}#ts-app .req-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:10px;padding:16px}#ts-app .req-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}#ts-app .req-category{font-size:.7rem;font-weight:600;padding:2px 8px;border-radius:4px}#ts-app .req-category-feature{background:#3b82f626;color:#60a5fa}#ts-app .req-category-curriculum{background:#10b98126;color:#34d399}#ts-app .req-status{font-size:.75rem;color:var(--text-muted)}#ts-app .req-card-title{font-size:.95rem;font-weight:600;color:var(--text-main);margin:0 0 6px}#ts-app .req-card-content{font-size:.82rem;color:var(--text-sub);line-height:1.6;margin:0 0 8px}#ts-app .req-card-footer{display:flex;justify-content:space-between;font-size:.72rem;color:var(--text-muted)}#ts-app .req-chat-fab{position:fixed;bottom:24px;right:24px;width:56px;height:56px;border-radius:50%;background:var(--accent-blue);border:none;font-size:1.5rem;cursor:pointer;box-shadow:0 4px 16px #0006;transition:transform .15s;z-index:1000}#ts-app .req-chat-fab:hover{transform:scale(1.1)}#ts-app .req-chat-widget{position:fixed;bottom:24px;right:24px;width:380px;max-height:520px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;display:flex;flex-direction:column;box-shadow:0 8px 32px #00000080;z-index:1000}@media(max-width:480px){#ts-app .req-chat-widget{width:calc(100vw - 24px);right:12px;bottom:12px}}#ts-app .req-chat-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--border-color)}#ts-app .req-chat-title{font-size:.9rem;font-weight:600;color:var(--text-main)}#ts-app .req-chat-close{background:none;border:none;color:var(--text-muted);font-size:1.3rem;cursor:pointer}#ts-app .req-chat-messages{flex:1;overflow-y:auto;padding:12px 16px;max-height:360px;min-height:200px}#ts-app .req-chat-msg{margin-bottom:10px}#ts-app .req-chat-msg-user{text-align:right}#ts-app .req-chat-msg-assistant{text-align:left}#ts-app .req-chat-bubble{display:inline-block;padding:8px 14px;border-radius:12px;font-size:.82rem;line-height:1.6;max-width:85%;text-align:left;white-space:pre-line}#ts-app .req-chat-msg-user .req-chat-bubble{background:var(--accent-blue);color:#fff}#ts-app .req-chat-msg-assistant .req-chat-bubble{background:var(--bg-darker);color:var(--text-sub)}#ts-app .req-chat-typing{opacity:.6}#ts-app .req-chat-preview{display:inline-block;background:#3b82f614;border:1px solid rgba(59,130,246,.2);border-radius:8px;padding:10px 12px;margin-top:6px;text-align:left;max-width:85%}#ts-app .req-chat-preview-label{font-size:.7rem;font-weight:600;color:var(--accent-blue);margin-bottom:4px}#ts-app .req-chat-preview-content{font-size:.78rem;color:var(--text-sub);white-space:pre-wrap;margin:0;font-family:inherit}#ts-app .req-chat-preview-hint{font-size:.7rem;color:var(--text-muted);margin:6px 0 0}#ts-app .req-chat-confirmed{display:inline-block;padding:8px 14px;border-radius:8px;background:#10b9811a;border:1px solid rgba(16,185,129,.3);color:#34d399;font-size:.82rem;margin-top:6px}#ts-app .req-chat-input-area{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--border-color)}#ts-app .req-chat-input{flex:1;padding:8px 12px;border-radius:8px;border:1px solid var(--border-color);background:var(--bg-darker);color:var(--text-main);font-size:.85rem;font-family:inherit;outline:none}#ts-app .req-chat-input:focus{border-color:var(--accent-blue)}#ts-app .req-chat-send{padding:8px 16px;border-radius:8px;border:none;background:var(--accent-blue);color:#fff;font-size:.82rem;font-weight:600;cursor:pointer;font-family:inherit}#ts-app .req-chat-send:disabled{opacity:.5;cursor:not-allowed}#ts-app .admin-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}#ts-app .admin-header-links{display:flex;align-items:center;gap:16px}#ts-app .admin-guide-link{font-size:.85rem;color:var(--accent-blue);padding:6px 14px;border:1px solid var(--accent-blue);border-radius:var(--radius-sm);transition:background .2s}#ts-app .admin-guide-link:hover{background:#4a9eff1a}#ts-app .admin-back-link{font-size:.85rem;color:var(--text-secondary);transition:color .2s}#ts-app .admin-back-link:hover{color:var(--accent-blue)}#ts-app .admin-btn{padding:10px 18px;border:none;border-radius:var(--radius-sm);font-size:.85rem;font-weight:600;cursor:pointer;transition:background .2s,opacity .2s}#ts-app .admin-btn:disabled{opacity:.5;cursor:not-allowed}#ts-app .admin-btn-sm{padding:6px 12px;font-size:.8rem}#ts-app .admin-btn-primary{background:var(--accent-blue);color:#fff}#ts-app .admin-btn-primary:hover{background:var(--accent-blue-hover)}#ts-app .admin-btn-secondary{background:var(--bg-input);color:var(--text-primary)}#ts-app .admin-btn-secondary:hover{background:var(--bg-card-hover)}#ts-app .admin-btn-danger{background:transparent;color:var(--accent-red);border:1px solid var(--accent-red-border)}#ts-app .admin-btn-danger:hover{background:var(--accent-red-bg)}#ts-app .admin-input{flex:1;background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:10px 14px;color:var(--text-primary);font-size:.88rem;font-family:var(--font-sans);outline:none;transition:border-color .2s}#ts-app .admin-input:focus{border-color:var(--accent-blue)}#ts-app .admin-input::placeholder{color:var(--text-muted)}#ts-app .admin-input-short{max-width:120px;flex:none}#ts-app .admin-textarea{width:100%;background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:10px 14px;color:var(--text-primary);font-size:.88rem;font-family:var(--font-sans);line-height:1.6;resize:vertical;outline:none;transition:border-color .2s}#ts-app .admin-textarea:focus{border-color:var(--accent-blue)}#ts-app .admin-textarea::placeholder{color:var(--text-muted)}#ts-app .admin-textarea-tall{min-height:200px}#ts-app .admin-file-input{font-size:.85rem;color:var(--text-secondary)}#ts-app .admin-file-input::file-selector-button{background:var(--bg-input);color:var(--text-primary);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:6px 14px;margin-right:12px;cursor:pointer;font-family:var(--font-sans)}#ts-app .admin-create-bar{display:flex;gap:12px;margin-bottom:28px}#ts-app .admin-table{display:flex;flex-direction:column;gap:8px}#ts-app .admin-empty{text-align:center;padding:40px;color:var(--text-muted)}#ts-app .admin-row{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:16px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}#ts-app .admin-row-title{font-size:1rem;font-weight:600;transition:color .2s}#ts-app .admin-row-title:hover{color:var(--accent-blue)}#ts-app .admin-row-meta{display:flex;align-items:center;gap:12px;margin-top:4px}#ts-app .admin-badge{font-size:.75rem;padding:2px 8px;border-radius:10px;font-weight:600}#ts-app .badge-published{background:#4ecb7126;color:var(--accent-green)}#ts-app .badge-draft{background:#a0a0b826;color:var(--text-secondary)}#ts-app .admin-row-count{font-size:.8rem;color:var(--text-muted)}#ts-app .admin-row-actions{display:flex;gap:8px;flex-shrink:0}#ts-app .editor-section{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:24px;margin-bottom:24px}#ts-app .editor-heading{font-size:1.1rem;font-weight:600;margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid var(--border-color)}#ts-app .editor-field{margin-bottom:16px}#ts-app .editor-label{display:block;font-size:.82rem;color:var(--text-secondary);margin-bottom:6px;font-weight:600}#ts-app .editor-hint{font-size:.8rem;color:var(--accent-green);margin-top:4px}#ts-app .editor-field-actions{display:flex;gap:8px;margin-top:16px}#ts-app .editor-section-block{border:1px solid var(--border-color);border-radius:var(--radius-sm);margin-bottom:16px;overflow:hidden}#ts-app .editor-section-header{background:var(--bg-input);padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}#ts-app .editor-section-title{font-size:.95rem;font-weight:600;cursor:pointer}#ts-app .editor-section-title:hover{color:var(--accent-blue)}#ts-app .editor-section-actions{display:flex;gap:6px;flex-shrink:0}#ts-app .editor-lesson-list{padding:8px}#ts-app .editor-lesson-row{border:1px solid transparent;border-radius:var(--radius-sm);margin-bottom:4px}#ts-app .editor-lesson-row.is-editing{border-color:var(--accent-blue);background:#4a9eff0d}#ts-app .editor-lesson-header{display:flex;align-items:center;gap:8px;padding:10px 12px;cursor:pointer;transition:background .15s;border-radius:var(--radius-sm)}#ts-app .editor-lesson-header:hover{background:var(--bg-card-hover)}#ts-app .editor-lesson-num{color:var(--text-muted);font-weight:600;flex-shrink:0;width:24px}#ts-app .editor-lesson-name{flex:1;font-size:.88rem}#ts-app .editor-lesson-indicators{display:flex;gap:4px;flex-shrink:0}#ts-app .indicator-ok{font-size:.85rem}#ts-app .indicator-missing{font-size:.85rem;opacity:.5}#ts-app .editor-lesson-detail{padding:16px 12px;border-top:1px solid var(--border-color)}#ts-app .editor-empty{text-align:center;padding:16px;color:var(--text-muted);font-size:.85rem}#ts-app .editor-add-section{display:flex;gap:12px;margin-top:16px}#ts-app .slide-list{display:flex;flex-direction:column;gap:12px;margin-top:12px}#ts-app .slide-item{display:flex;gap:12px;padding:12px;background:var(--bg-input);border-radius:var(--radius-sm);align-items:flex-start}#ts-app .slide-thumb{width:120px;height:68px;object-fit:cover;border-radius:4px;flex-shrink:0;background:#000}#ts-app .slide-item-body{flex:1;display:flex;flex-direction:column;gap:8px}#ts-app .slide-item-header{display:flex;align-items:center;justify-content:space-between}#ts-app .slide-num{font-size:.8rem;color:var(--text-muted);font-weight:600}#ts-app .transcript-status{font-size:.82rem;padding:4px 0}#ts-app .transcript-status--pending{color:var(--accent-blue)}#ts-app .transcript-status--done{color:var(--accent-green)}#ts-app .transcript-status--failed{color:var(--accent-red)}#ts-app .ai-script-editor{margin-top:8px}#ts-app .ai-script-input-row{display:flex;gap:8px}#ts-app .ai-script-input-row .admin-input{flex:1}#ts-app .ai-slide-generate{margin-top:16px;padding:12px;border:1px solid var(--border-color, #ddd);border-radius:8px}#ts-app .ai-slide-checkbox{display:flex;align-items:center;gap:6px;margin-top:6px;font-size:.85em}#ts-app .ai-slide-batch{margin-top:12px}#ts-app .ai-slide-batch summary{cursor:pointer;font-size:.85em}#ts-app .ai-slide-batch .admin-textarea{margin-top:8px}#ts-app .ai-slide-batch .admin-btn{margin-top:6px}#ts-app .audio-preview{display:flex;align-items:center;gap:8px;margin-top:8px}#ts-app .audio-preview audio{height:32px}#ts-app .audio-generate-row{display:flex;align-items:center;gap:8px;margin-top:8px}#ts-app .editor-lesson-move{display:flex;gap:4px;flex-shrink:0}#ts-app .toast-message{position:fixed;top:60px;left:50%;transform:translate(-50%);background:#22c55e;color:#fff;padding:10px 28px;border-radius:8px;font-size:.95rem;font-weight:600;z-index:9999;box-shadow:0 4px 16px #0000004d;animation:toast-fade 2s ease-in-out forwards}@keyframes toast-fade{0%{opacity:0;transform:translate(-50%) translateY(-10px)}15%{opacity:1;transform:translate(-50%) translateY(0)}75%{opacity:1}to{opacity:0}}#ts-app .question-log{margin-top:16px;border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:16px;background:var(--bg-darker)}#ts-app .question-log-header{margin-bottom:12px}#ts-app .question-log-list{display:flex;flex-direction:column;gap:10px}#ts-app .question-log-item{padding:10px 14px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-sm)}#ts-app .question-log-item--gap{border-left:3px solid #ff9800}#ts-app .question-log-meta{display:flex;align-items:center;gap:8px;margin-bottom:6px}#ts-app .question-log-time{font-size:.75rem;color:var(--text-muted)}#ts-app .question-log-q{font-size:.88rem;color:var(--text-primary);margin:0;font-weight:500}#ts-app .question-log-a{margin-top:6px;font-size:.84rem;color:var(--text-secondary)}#ts-app .question-log-a summary{cursor:pointer;color:var(--accent-blue);font-size:.8rem}#ts-app .question-log-a p{margin:6px 0 0;white-space:pre-wrap;line-height:1.5}#ts-app .question-log-pager{display:flex;align-items:center;gap:12px;margin-top:12px;justify-content:center}#ts-app .instructor-editor{margin-bottom:32px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:24px}#ts-app .instructor-editor-body{display:flex;gap:24px;align-items:flex-start}#ts-app .instructor-avatar-section{display:flex;flex-direction:column;align-items:center;gap:10px;flex-shrink:0}#ts-app .instructor-avatar-preview{width:80px;height:80px;border-radius:50%;overflow:hidden;background:var(--bg-input);display:flex;align-items:center;justify-content:center}#ts-app .instructor-avatar-img{width:100%;height:100%;object-fit:cover}#ts-app .instructor-avatar-placeholder{font-size:2rem;font-weight:700;color:var(--text-muted)}#ts-app .instructor-avatar-upload{cursor:pointer;font-size:.78rem}#ts-app .instructor-editor-fields{flex:1;min-width:0}@media(max-width:600px){#ts-app .instructor-editor-body{flex-direction:column;align-items:center}}#ts-app .guide-layout{display:flex;gap:24px;align-items:flex-start}#ts-app .guide-nav{width:220px;flex-shrink:0;position:sticky;top:72px;display:flex;flex-direction:column;gap:2px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:8px}#ts-app .guide-nav-item{background:none;border:none;text-align:left;padding:10px 14px;font-size:.85rem;color:var(--text-secondary);border-radius:var(--radius-sm);cursor:pointer;transition:background .15s,color .15s;font-family:var(--font-sans)}#ts-app .guide-nav-item:hover{background:var(--bg-card-hover);color:var(--text-primary)}#ts-app .guide-nav-item.is-active{background:#4a9eff1f;color:var(--accent-blue);font-weight:600}#ts-app .guide-body{flex:1;min-width:0;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:32px}#ts-app .guide-section-title{font-size:1.3rem;font-weight:700;margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid var(--border-color)}#ts-app .guide-body h4{font-size:1rem;font-weight:600;margin-top:20px;margin-bottom:8px;color:var(--text-primary)}#ts-app .guide-body p{font-size:.9rem;color:var(--text-secondary);line-height:1.7;margin-bottom:10px}#ts-app .guide-body ul,#ts-app .guide-body ol{padding-left:20px;margin-bottom:12px}#ts-app .guide-body li{font-size:.88rem;color:var(--text-secondary);line-height:1.7;margin-bottom:4px}#ts-app .guide-body strong{color:var(--text-primary)}#ts-app .guide-table{width:100%;border-collapse:collapse;margin:12px 0;font-size:.88rem}#ts-app .guide-table th{background:var(--bg-darker);color:var(--text-primary);font-weight:600;padding:10px 14px;text-align:left;border:1px solid var(--border-color)}#ts-app .guide-table td{padding:10px 14px;color:var(--text-secondary);border:1px solid var(--border-color)}@media(max-width:768px){#ts-app .guide-layout{flex-direction:column}#ts-app .guide-nav{width:100%;position:static;flex-direction:row;flex-wrap:wrap}#ts-app .guide-nav-item{font-size:.78rem;padding:8px 10px}}#ts-app .knowledge-editor{margin-top:32px}#ts-app .knowledge-header{margin-bottom:16px}#ts-app .knowledge-list{display:flex;flex-direction:column;gap:10px}#ts-app .knowledge-item{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:16px}#ts-app .knowledge-item-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}#ts-app .knowledge-item-title{font-size:.95rem;font-weight:600}#ts-app .knowledge-item-actions{display:flex;gap:6px}#ts-app .knowledge-preview{font-size:.82rem;color:var(--text-muted);white-space:pre-wrap;font-family:var(--font-sans);line-height:1.5}#ts-app .knowledge-textarea{font-family:Consolas,Monaco,Courier New,monospace;font-size:.85rem;line-height:1.6;min-height:200px}#ts-app .knowledge-edit-form,#ts-app .knowledge-add-form{display:flex;flex-direction:column;gap:10px;margin-top:12px}#ts-app .knowledge-actions{display:flex;gap:8px}#ts-app .ce-workspace{display:flex;flex-direction:column;height:calc(100vh - 56px);overflow:hidden}#ts-app .ce-workspace .instructor-editor{margin-bottom:0;border-radius:0;border-left:0;border-right:0;padding:12px 20px}#ts-app .ce-admin-bar{display:flex;align-items:center;justify-content:space-between;padding:8px 20px;border-bottom:1px solid var(--border-color);flex-shrink:0}#ts-app .ce-admin-bar-left{display:flex;gap:8px}#ts-app .ce-btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border:none;border-radius:var(--radius-sm);font-size:13px;font-weight:600;cursor:pointer;transition:all .15s ease;white-space:nowrap;font-family:var(--font-sans);text-decoration:none}#ts-app .ce-btn:disabled{opacity:.35;cursor:not-allowed}#ts-app .ce-btn-primary{background:var(--accent-blue);color:#fff}#ts-app .ce-btn-primary:hover:not(:disabled){background:var(--accent-blue-hover)}#ts-app .ce-btn-secondary{background:var(--bg-input);color:var(--text-secondary);border:1px solid var(--border-color)}#ts-app .ce-btn-secondary:hover:not(:disabled){background:var(--bg-card-hover);color:var(--text-primary)}#ts-app .ce-btn-danger{background:#ff50501f;color:#ff5050;border:1px solid rgba(255,80,80,.3)}#ts-app .ce-btn-danger:hover:not(:disabled){background:#ff505033}#ts-app .ce-btn-icon{font-size:13px}#ts-app .ce-change-bar{display:none;align-items:center;gap:12px;padding:8px 20px;background:#4a9eff14;border-bottom:1px solid rgba(74,158,255,.2);font-size:13px;flex-shrink:0}#ts-app .ce-change-bar.visible{display:flex}#ts-app .ce-change-text{color:var(--accent-blue);font-weight:600}#ts-app .ce-change-detail{color:var(--text-secondary);font-size:12px}#ts-app .ce-columns{display:flex;flex:1;overflow:hidden}#ts-app .ce-col{display:flex;flex-direction:column;overflow:hidden;flex-shrink:0}#ts-app .ce-col[data-col="0"]{min-width:140px}#ts-app .ce-col[data-col="1"]{min-width:160px}#ts-app .ce-col[data-col="2"]{min-width:180px}#ts-app .ce-col[data-col="3"]{flex:1;min-width:320px;flex-shrink:1}#ts-app .ce-resizer{width:5px;cursor:col-resize;background:var(--border-color);flex-shrink:0;position:relative;transition:background .15s}#ts-app .ce-resizer:hover,#ts-app .ce-resizer.active{background:var(--accent-blue)}#ts-app .ce-resizer:after{content:"";position:absolute;top:0;right:-3px;bottom:0;left:-3px}#ts-app .ce-col-header{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:var(--bg-darker);border-bottom:1px solid var(--border-color);flex-shrink:0}#ts-app .ce-col-title{font-size:12px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}#ts-app .ce-col-collapse{background:none;border:none;color:var(--text-muted);font-size:.7rem;cursor:pointer;padding:2px 4px;border-radius:3px;transition:color .15s,background .15s;flex-shrink:0;margin-left:4px}#ts-app .ce-col-collapse:hover{color:var(--text-primary);background:var(--bg-card-hover)}#ts-app .ce-col-tab{display:flex;flex-direction:column;align-items:center;gap:4px;padding:12px 4px;background:var(--bg-darker);border:none;border-right:1px solid var(--border-color);color:var(--text-muted);cursor:pointer;transition:background .15s,color .15s;flex-shrink:0;writing-mode:vertical-rl}#ts-app .ce-col-tab:hover{background:var(--bg-card-hover);color:var(--text-primary)}#ts-app .ce-col-tab-arrow{font-size:.6rem;writing-mode:horizontal-tb}#ts-app .ce-col-tab-label{font-size:.72rem;font-weight:600;letter-spacing:.1em}#ts-app .ce-col-add{background:transparent;border:1px solid var(--border-color);color:var(--text-muted);width:24px;height:24px;border-radius:4px;cursor:pointer;font-size:14px;display:flex;align-items:center;justify-content:center;transition:all .15s ease;line-height:1}#ts-app .ce-col-add:hover{border-color:var(--accent-blue);color:var(--accent-blue);background:#4a9eff14}#ts-app .ce-col-list{list-style:none;overflow-y:auto;flex:1;padding:4px 0}#ts-app .ce-col-content{overflow-y:auto;flex:1;padding:0}#ts-app .ce-item{display:flex;align-items:flex-start;gap:8px;padding:9px 14px;cursor:pointer;transition:background .1s ease;position:relative;border-bottom:1px solid transparent}#ts-app .ce-item:hover{background:var(--bg-card-hover)}#ts-app .ce-item.active{background:#4a9eff1f;border-left:3px solid var(--accent-blue);padding-left:11px}#ts-app .ce-item.active .ce-item-text{color:var(--text-primary);font-weight:600}#ts-app .ce-item-drag{cursor:grab;color:var(--text-muted);font-size:12px;-webkit-user-select:none;user-select:none;flex-shrink:0;opacity:.5;transition:opacity .1s}#ts-app .ce-item:hover .ce-item-drag{opacity:1}#ts-app .ce-item-drag:active{cursor:grabbing}#ts-app .ce-item-num{font-size:11px;color:var(--text-muted);min-width:16px;text-align:right;font-variant-numeric:tabular-nums;flex-shrink:0}#ts-app .ce-item-text{flex:1;font-size:13px;color:var(--text-secondary);min-width:0;word-break:break-word}#ts-app .ce-item-badge{font-size:10px;padding:1px 6px;border-radius:8px;flex-shrink:0;font-weight:600}#ts-app .ce-badge-count{background:var(--bg-input);color:var(--text-muted)}#ts-app .ce-badge-slides{background:#4a9eff1f;color:var(--accent-blue)}#ts-app .ce-badge-video{background:#4ecb711f;color:var(--accent-green)}#ts-app .ce-badge-published{background:#4ecb711f;color:var(--accent-green);font-size:10px}#ts-app .ce-badge-draft{background:#ffb4321f;color:#ffb432;font-size:10px}#ts-app .ce-item-actions{display:flex;gap:2px;flex-shrink:0;opacity:0;transition:opacity .12s}#ts-app .ce-item:hover .ce-item-actions{opacity:1}#ts-app .ce-item-btn{background:transparent;border:none;color:var(--text-muted);cursor:pointer;width:24px;height:24px;border-radius:4px;display:flex;align-items:center;justify-content:center;font-size:12px;transition:all .12s}#ts-app .ce-item-btn:hover{background:var(--bg-input);color:var(--text-primary)}#ts-app .ce-item-btn.danger:hover{background:#ff50501f;color:#ff5050}#ts-app .ce-item.sortable-ghost{opacity:.3}#ts-app .ce-item.sortable-chosen{background:#4a9eff26}#ts-app .ce-col-empty{color:var(--text-muted);font-size:13px;padding:30px 14px;text-align:center;font-style:italic;display:flex;flex-direction:column;align-items:center;gap:8px}#ts-app .ce-empty-icon{font-size:24px}#ts-app .ce-empty-text{font-size:13px;color:var(--text-muted);font-style:italic}#ts-app .ce-panel-tabs{display:flex;gap:0}#ts-app .ce-panel-tab{background:none;border:none;padding:6px 12px;font-size:12px;font-weight:600;color:var(--text-muted);cursor:pointer;border-bottom:2px solid transparent;transition:color .15s,border-color .15s;font-family:var(--font-sans)}#ts-app .ce-panel-tab.active{color:var(--accent-blue);border-bottom-color:var(--accent-blue)}#ts-app .ce-panel-tab:disabled{opacity:.35;cursor:not-allowed}#ts-app .ce-content-header{padding:16px 20px;border-bottom:1px solid var(--border-color)}#ts-app .ce-content-title{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:6px}#ts-app .ce-content-meta{display:flex;gap:12px;font-size:12px;color:var(--text-muted)}#ts-app .ce-content-body{padding:16px 20px}#ts-app .ce-content-label{font-size:11px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px}#ts-app .ce-lesson-panel{padding:16px 20px}#ts-app .ce-lesson-panel .editor-lesson-detail{padding:0;border-top:none}#ts-app .ce-lesson-panel .editor-field-actions{position:sticky;bottom:0;background:var(--bg-card);padding:12px 0;border-top:1px solid var(--border-color);z-index:10}#ts-app .ce-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:none;align-items:center;justify-content:center;z-index:1000}#ts-app .ce-modal-overlay.visible{display:flex}#ts-app .ce-modal{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);width:90%;max-width:420px;box-shadow:0 20px 60px #0006}#ts-app .ce-modal-header{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:1px solid var(--border-color)}#ts-app .ce-modal-title{font-size:15px;font-weight:600}#ts-app .ce-modal-close{background:none;border:none;color:var(--text-muted);font-size:20px;cursor:pointer;line-height:1}#ts-app .ce-modal-close:hover{color:var(--text-primary)}#ts-app .ce-modal-body{padding:18px}#ts-app .ce-modal-message{font-size:14px;color:var(--text-secondary);line-height:1.6}#ts-app .ce-modal-section-list{margin-top:12px;display:flex;flex-direction:column;gap:4px}#ts-app .ce-label{display:block;font-size:12px;color:var(--text-secondary);margin-bottom:6px;font-weight:600}#ts-app .ce-input{width:100%;padding:9px 12px;background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-primary);font-size:14px;font-family:var(--font-sans);outline:none;transition:border-color .15s}#ts-app .ce-input:focus{border-color:var(--accent-blue)}#ts-app .ce-modal-footer{display:flex;justify-content:flex-end;gap:8px;padding:12px 18px;border-top:1px solid var(--border-color)}#ts-app .ce-toast{position:fixed;bottom:30px;left:50%;transform:translate(-50%) translateY(20px);background:var(--accent-green);color:#fff;padding:10px 24px;border-radius:var(--radius-md);font-size:14px;font-weight:600;opacity:0;pointer-events:none;transition:all .25s ease;z-index:1100}#ts-app .ce-toast.visible{opacity:1;transform:translate(-50%) translateY(0)}#ts-app .ce-toast-success{background:var(--accent-green)}#ts-app .ce-toast-error{background:#ff5050}#ts-app .ce-toast-info{background:var(--accent-blue)}#ts-app .ce-context-menu{background:var(--bg-secondary, #1e1e2e);border:1px solid var(--border-color, #333);border-radius:6px;padding:4px 0;min-width:140px;box-shadow:0 8px 24px #0006}#ts-app .ce-context-item{display:block;width:100%;padding:7px 14px;background:none;border:none;color:var(--text-primary, #e0e0e0);font-size:.82rem;text-align:left;cursor:pointer;transition:background .15s}#ts-app .ce-context-item:hover{background:#ffffff14}#ts-app .ce-context-item.danger{color:#ff5050}#ts-app .ce-context-item.danger:hover{background:#ff50501f}@media(max-width:700px){#ts-app .ce-columns{flex-direction:column;height:auto;overflow:visible}#ts-app .ce-col{width:100%!important;min-width:0!important;border-bottom:1px solid var(--border-color);max-height:300px;flex-shrink:1}#ts-app .ce-col[data-col="3"]{max-height:none}#ts-app .ce-resizer{display:none}#ts-app .ce-item-actions{opacity:1}#ts-app .ce-workspace{height:auto;overflow:visible}}#ts-app .guide-editor-wrap{border:1px solid var(--border-color);border-radius:6px;overflow:hidden;background:var(--bg-card)}#ts-app .guide-editor-toolbar{display:flex;gap:2px;padding:6px 8px;background:var(--bg-darker);border-bottom:1px solid var(--border-color);flex-wrap:wrap;align-items:center}#ts-app .guide-tb-btn{background:none;border:1px solid transparent;border-radius:4px;padding:4px 10px;font-size:.78rem;color:var(--text-sub);cursor:pointer;transition:background .12s,color .12s;font-family:inherit;line-height:1.4}#ts-app .guide-tb-btn:hover{background:#ffffff14;color:var(--text-main)}#ts-app .guide-tb-btn.is-active{background:var(--accent-blue);color:#fff;border-color:var(--accent-blue)}#ts-app .guide-editor-sep{display:inline-block;width:1px;height:20px;background:var(--border-color);margin:0 4px}#ts-app .guide-editor-content{min-height:200px;max-height:500px;overflow-y:auto}#ts-app .guide-editor-content .tiptap{padding:14px 16px;outline:none;font-size:.88rem;line-height:1.7;color:var(--text-sub);min-height:200px}#ts-app .guide-editor-content .tiptap:focus{background:#ffffff05}#ts-app .guide-editor-content .tiptap p{margin:0 0 8px}#ts-app .guide-editor-content .tiptap h3{color:var(--text-main);font-size:1rem;font-weight:700;margin:18px 0 6px;padding-bottom:4px;border-bottom:1px solid var(--border-color)}#ts-app .guide-editor-content .tiptap h3:first-child{margin-top:0}#ts-app .guide-editor-content .tiptap ul,#ts-app .guide-editor-content .tiptap ol{padding-left:20px;margin:4px 0 8px}#ts-app .guide-editor-content .tiptap li{margin:2px 0}#ts-app .guide-editor-content .tiptap pre{background:#1a1a2e;border:1px solid var(--border-color);border-radius:6px;padding:12px 14px;font-family:Consolas,Monaco,Courier New,monospace;font-size:.82rem;line-height:1.5;color:#e0e0e0;overflow-x:auto;margin:8px 0}#ts-app .guide-editor-content .tiptap code{background:#ffffff14;border-radius:3px;padding:1px 5px;font-family:Consolas,monospace;font-size:.82rem;color:#e8c36e}#ts-app .guide-editor-content .tiptap pre code{background:none;padding:0;color:inherit}#ts-app .guide-editor-content .tiptap blockquote{border-left:3px solid var(--accent-blue);padding-left:12px;margin:8px 0;color:var(--text-muted)}#ts-app .guide-editor-content .tiptap hr{border:none;border-top:1px solid var(--border-color);margin:16px 0}#ts-app .guide-editor-content .tiptap strong{color:var(--text-main)}#ts-app .ve-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;z-index:9999;display:flex;align-items:center;justify-content:center;padding:24px}#ts-app .ve-modal{background:var(--bg-card);border:1px solid var(--border-color);border-radius:10px;width:100%;max-width:520px;box-shadow:0 12px 40px #00000080}#ts-app .ve-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border-color)}#ts-app .ve-title{font-size:1rem;font-weight:700;color:var(--text-main);margin:0}#ts-app .ve-close{background:none;border:none;color:var(--text-muted);font-size:1.4rem;cursor:pointer;padding:0 4px;line-height:1}#ts-app .ve-close:hover{color:var(--text-main)}#ts-app .ve-body{padding:20px}#ts-app .ve-info{display:flex;flex-direction:column;gap:2px;margin-bottom:16px}#ts-app .ve-lesson-name{font-size:.9rem;font-weight:600;color:var(--text-main)}#ts-app .ve-slide-count{font-size:.78rem;color:var(--text-muted)}#ts-app .ve-section{margin-bottom:16px}#ts-app .ve-label{display:block;font-size:.8rem;font-weight:600;color:var(--text-sub);margin-bottom:8px}#ts-app .ve-ratio-grid{display:flex;gap:8px}#ts-app .ve-ratio-card{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:12px 8px;border:2px solid var(--border-color);border-radius:8px;cursor:pointer;transition:border-color .15s,background .15s;text-align:center}#ts-app .ve-ratio-card:hover{border-color:var(--accent-blue)}#ts-app .ve-ratio-card.selected{border-color:var(--accent-blue);background:#3b82f61a}#ts-app .ve-ratio-card input{display:none}#ts-app .ve-ratio-icon{font-size:1.4rem}#ts-app .ve-ratio-label{font-size:.82rem;font-weight:600;color:var(--text-main)}#ts-app .ve-ratio-res{font-size:.7rem;color:var(--text-muted);font-family:monospace}#ts-app .ve-ratio-platforms{font-size:.68rem;color:var(--accent-blue)}#ts-app .ve-warning{padding:8px 12px;background:#ffc8001a;border:1px solid rgba(255,200,0,.3);border-radius:6px;font-size:.78rem;color:#e8c36e;margin-bottom:12px}#ts-app .ve-progress-section{margin-top:16px}#ts-app .ve-progress-bar-wrap{height:8px;background:var(--bg-darker);border-radius:4px;overflow:hidden}#ts-app .ve-progress-bar{height:100%;background:var(--accent-blue);border-radius:4px;transition:width .3s ease}#ts-app .ve-progress-info{display:flex;justify-content:space-between;margin-top:6px}#ts-app .ve-progress-message{font-size:.78rem;color:var(--text-sub)}#ts-app .ve-progress-pct{font-size:.78rem;color:var(--accent-blue);font-weight:600}#ts-app .ve-error{padding:8px 12px;background:#ff3c3c1a;border:1px solid rgba(255,60,60,.3);border-radius:6px;font-size:.78rem;color:#ff6b6b;margin-top:12px}#ts-app .ve-bgm-upload{display:flex;flex-direction:column;gap:8px}#ts-app .ve-bgm-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;background:var(--bg-darker);border:1px dashed var(--border-color);border-radius:6px;color:var(--text-sub);font-size:.82rem;cursor:pointer;transition:border-color .15s}#ts-app .ve-bgm-btn:hover{border-color:var(--accent-blue)}#ts-app .ve-bgm-file{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--bg-darker);border:1px solid var(--border-color);border-radius:6px}#ts-app .ve-bgm-play{background:none;border:none;color:var(--accent-blue);font-size:1rem;cursor:pointer;padding:2px 4px;flex-shrink:0}#ts-app .ve-bgm-play:hover{opacity:.8}#ts-app .ve-bgm-name{flex:1;font-size:.8rem;color:var(--text-main);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#ts-app .ve-bgm-remove{background:none;border:none;color:var(--text-muted);font-size:1rem;cursor:pointer;padding:2px 4px;flex-shrink:0}#ts-app .ve-bgm-remove:hover{color:#ff6b6b}#ts-app .ve-volume-row{display:flex;align-items:center;gap:10px;margin-bottom:8px}#ts-app .ve-volume-row:last-child{margin-bottom:0}#ts-app .ve-volume-name{font-size:.78rem;color:var(--text-sub);width:80px;flex-shrink:0;text-align:right}#ts-app .ve-volume-slider{flex:1;height:6px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--bg-darker);border-radius:3px;outline:none}#ts-app .ve-volume-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:var(--accent-blue);cursor:pointer;border:2px solid var(--bg-card);box-shadow:0 1px 4px #0000004d}#ts-app .ve-volume-slider::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--accent-blue);cursor:pointer;border:2px solid var(--bg-card)}#ts-app .ve-volume-slider::-moz-range-track{height:6px;background:var(--bg-darker);border-radius:3px}#ts-app .ve-volume-pct{font-size:.78rem;color:var(--accent-blue);font-weight:600;width:36px;text-align:right;font-variant-numeric:tabular-nums}#ts-app .ve-footer{display:flex;gap:8px;justify-content:flex-end;padding:16px 20px;border-top:1px solid var(--border-color)}@media(max-width:768px){#ts-app .header-inner{padding:0 16px}#ts-app .ts-main{padding:24px 16px}#ts-app .instructor-grid{grid-template-columns:1fr}#ts-app .instructor-card{padding:20px}#ts-app .instructor-profile{flex-direction:column;align-items:flex-start;gap:16px}#ts-app .course-card{flex-direction:column}#ts-app .course-thumbnail{width:100%;min-height:80px}#ts-app .player-area{flex-direction:column;padding:0 16px}#ts-app .player-right{width:100%}#ts-app .lesson-list{flex-direction:row;overflow-x:auto;max-height:none;gap:8px;padding-bottom:4px}#ts-app .lesson-item{white-space:nowrap;flex-shrink:0}#ts-app .content-area{padding:0 16px}#ts-app .lesson-heading{padding:20px 16px 0}#ts-app .curriculum-section{padding:0 16px}#ts-app .admin-row{flex-direction:column;align-items:flex-start}#ts-app .admin-row-actions{width:100%;flex-wrap:wrap}#ts-app .admin-create-bar{flex-direction:column}#ts-app .editor-section-header{flex-direction:column;align-items:flex-start;gap:8px}#ts-app .editor-add-section{flex-direction:column}}@media(max-width:500px){#ts-app .tab-btn{padding:10px 14px;font-size:.82rem}}