.course-bar{background:var(--surface);border-bottom:1px solid var(--border);padding:18px 0}.course-bar .container{display:flex;align-items:center;gap:24px;flex-wrap:wrap}.cb-left{display:flex;align-items:center;gap:14px;flex:1;min-width:0}.cb-icon{width:42px;height:42px;border-radius:10px;background:var(--grad-accent);display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0;box-shadow:0 4px 12px rgba(79,70,229,.25)}.cb-icon svg{width:20px;height:20px}.cb-eyebrow{font-family:'JetBrains Mono',monospace;font-size:10.5px;color:var(--accent);letter-spacing:.08em;text-transform:uppercase;font-weight:600}.cb-title{font-size:15.5px;font-weight:700;color:var(--text-primary);letter-spacing:-.005em;line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.cb-progress{display:flex;align-items:center;gap:14px;flex-shrink:0}.cb-progress-text{font-size:13px;color:var(--text-secondary);font-weight:500;font-family:'JetBrains Mono',monospace;white-space:nowrap}.cb-progress-text .num{color:var(--text-primary);font-weight:700}.cb-progress-bar{width:160px;height:6px;background:var(--surface-2);border-radius:3px;overflow:hidden;position:relative}.cb-progress-fill{height:100%;background:var(--grad-accent);border-radius:3px;box-shadow:0 0 8px rgba(79,70,229,.4);transition:width .4s ease}.course-layout{padding:32px 0 64px}.course-grid-page{display:grid;grid-template-columns:340px minmax(0,1fr);gap:28px;align-items:start}.outline{background:var(--surface);border:1px solid var(--border);border-radius:14px;overflow:hidden;position:sticky;top:96px;max-height:calc(100vh - 120px);display:flex;flex-direction:column}.outline-head{padding:20px;border-bottom:1px solid var(--border)}.outline-eye{font-family:'JetBrains Mono',monospace;font-size:10.5px;color:var(--text-muted);letter-spacing:.1em;text-transform:uppercase;font-weight:600;margin-bottom:8px}.outline-title{font-size:16px;font-weight:700;color:var(--text-primary);letter-spacing:-.005em;line-height:1.4;margin-bottom:14px}.outline-stats{display:flex;align-items:center;gap:14px;font-size:12px;color:var(--text-muted);font-family:'JetBrains Mono',monospace}.outline-list{flex:1;overflow-y:auto;padding:8px 0}.chapter{border-bottom:1px solid var(--border)}.chapter:last-child{border-bottom:none}.chapter-head{padding:14px 20px;display:flex;align-items:center;gap:12px;cursor:pointer;transition:background .2s ease;width:100%;text-align:right}.chapter-head:hover{background:var(--surface-2)}.chapter-num{width:24px;height:24px;border-radius:6px;background:var(--surface-2);color:var(--text-secondary);font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}.chapter.active .chapter-num{background:var(--accent-light);color:var(--accent)}.chapter.completed .chapter-num{background:var(--ai-light);color:var(--ai)}.chapter-info{flex:1;min-width:0}.chapter-title{font-size:13.5px;font-weight:700;color:var(--text-primary);letter-spacing:-.005em;line-height:1.4;margin-bottom:3px}.chapter-meta{font-size:11.5px;color:var(--text-muted);font-family:'JetBrains Mono',monospace;display:flex;align-items:center;gap:8px}.chapter-toggle{width:22px;height:22px;display:flex;align-items:center;justify-content:center;color:var(--text-muted);transition:transform .25s ease}.chapter.collapsed .chapter-toggle{transform:rotate(-90deg)}.lesson-list{overflow:hidden;transition:max-height .35s cubic-bezier(.4,0,.2,1)}.chapter.collapsed .lesson-list{max-height:0!important}.lesson{display:flex;align-items:center;gap:12px;padding:11px 20px 11px 16px;cursor:pointer;transition:background .2s ease;border-right:2px solid transparent}.lesson:hover{background:var(--surface-2)}.lesson.current{background:linear-gradient(90deg,var(--accent-light),transparent 90%);border-right-color:var(--accent)}.lesson.current .lesson-title{color:var(--accent);font-weight:600}.lesson-status{width:22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;border:1.5px solid var(--border-strong);background:var(--surface)}.lesson.completed .lesson-status{background:var(--ai);border-color:var(--ai);color:#fff}.lesson.current .lesson-status{background:var(--accent);border-color:var(--accent);color:#fff}.lesson.locked .lesson-status{background:var(--surface-2);border-color:var(--border)}.lesson-info{flex:1;min-width:0}.lesson-title{font-size:13px;line-height:1.45;color:var(--text-primary);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lesson.locked .lesson-title{color:var(--text-muted)}.lesson-time{font-size:11px;color:var(--text-muted);font-family:'JetBrains Mono',monospace;display:flex;align-items:center;gap:5px}.pro-mini{font-size:9px;background:var(--gold-light);color:var(--gold);padding:1px 5px;border-radius:3px;font-weight:700;letter-spacing:.04em}.rmz-player-wrap{position:relative;direction:ltr}.rmz-player{background:var(--depth);border-radius:14px;overflow:hidden;position:relative;aspect-ratio:16/9;box-shadow:var(--shadow-md);direction:ltr}.rmz-player video{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#000}.rmz-overlay-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(15,15,26,.4),rgba(24,24,27,.6));z-index:3;cursor:pointer;transition:opacity .3s ease}.rmz-overlay-play.hidden{opacity:0;pointer-events:none}.rmz-overlay-play .vp-play{width:88px;height:88px;border-radius:50%;background:rgba(255,255,255,.95);display:flex;align-items:center;justify-content:center;color:var(--depth);transition:all .3s ease;box-shadow:0 12px 40px rgba(0,0,0,.4),0 0 0 1px rgba(255,255,255,.1);border:none;cursor:pointer}.rmz-overlay-play .vp-play:hover{transform:scale(1.08);box-shadow:0 16px 48px rgba(79,70,229,.4),0 0 0 4px rgba(79,70,229,.2)}.rmz-overlay-play .vp-play svg{width:30px;height:30px;margin-right:4px}.rmz-loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(24,24,27,.5);z-index:4}.rmz-loading::after{content:'';width:48px;height:48px;border:3px solid rgba(255,255,255,.2);border-top-color:var(--accent);border-radius:50%;animation:rmzSpin 1s linear infinite}@keyframes rmzSpin{to{transform:rotate(360deg)}}.rmz-controls{position:absolute;left:0;right:0;bottom:0;padding:14px 22px 16px;background:linear-gradient(0deg,rgba(0,0,0,.7),transparent);z-index:5;color:#fff;opacity:0;transition:opacity .25s ease}.rmz-player.controls-visible .rmz-controls,.rmz-player.paused .rmz-controls,.rmz-player:hover .rmz-controls{opacity:1}.rmz-progress-bar{position:relative;height:5px;background:rgba(255,255,255,.18);border-radius:3px;cursor:pointer;margin-bottom:12px;transition:height .2s ease}.rmz-progress-bar:hover{height:7px}.rmz-buffered{position:absolute;top:0;left:0;right:auto;height:100%;width:0;background:rgba(255,255,255,.12);border-radius:3px}.rmz-played{position:absolute;top:0;left:0;right:auto;height:100%;width:0;background:linear-gradient(90deg,#4f46e5,#7c3aed);border-radius:3px;box-shadow:0 0 12px rgba(79,70,229,.5)}.rmz-thumb{position:absolute;top:50%;width:14px;height:14px;background:#fff;border-radius:50%;transform:translate(-50%,-50%);box-shadow:0 2px 8px rgba(0,0,0,.4);opacity:0;transition:opacity .2s ease;left:0;right:auto}.rmz-progress-bar:hover .rmz-thumb{opacity:1}.rmz-chapter-marker{position:absolute;top:0;height:100%;width:2px;background:#fbbf24;opacity:.7;pointer-events:none}.rmz-control-bar{display:flex;align-items:center;justify-content:space-between;gap:14px}.rmz-controls-left,.rmz-controls-right{display:flex;align-items:center;gap:8px}.rmz-controls-right .rmz-time{font-family:'JetBrains Mono',monospace;font-size:13px;color:rgba(255,255,255,.85);margin-right:8px}.rmz-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:6px;color:rgba(255,255,255,.9);transition:all .2s ease;background:0 0;border:none;cursor:pointer}.rmz-btn:hover{background:rgba(255,255,255,.12);color:#fff}.rmz-btn svg{width:18px;height:18px}.rmz-btn-play svg{width:22px;height:22px}.rmz-volume-slider{width:80px;height:4px;-webkit-appearance:none;appearance:none;background:rgba(255,255,255,.2);border-radius:2px;cursor:pointer;outline:0}.rmz-volume-slider::-webkit-slider-thumb{-webkit-appearance:none;width:12px;height:12px;background:#fff;border-radius:50%;cursor:pointer}.rmz-speed{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);color:#fff;padding:5px 10px;border-radius:6px;font-family:'JetBrains Mono',monospace;font-size:12px;outline:0;cursor:pointer;font-weight:600}.rmz-btn-quality{padding:5px 10px;font-size:11px;font-weight:600;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);color:rgba(255,255,255,.95);border-radius:6px;font-family:'JetBrains Mono',monospace;height:auto;width:auto}.rmz-resume-toast{position:absolute;top:14px;right:14px;background:rgba(17,17,24,.92);backdrop-filter:blur(10px);color:#fff;padding:10px 16px;border-radius:10px;font-size:13px;display:flex;align-items:center;gap:10px;border:1px solid rgba(255,255,255,.1);z-index:6;animation:slideIn .3s ease}@keyframes slideIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}.rmz-resume-toast button{background:var(--accent);color:#fff;padding:5px 12px;border-radius:6px;font-size:12px;font-weight:600;font-family:Vazirmatn,sans-serif;border:none;cursor:pointer}.lesson-header{padding:0 6px;margin-top:24px}.lh-meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}.lh-pill{display:inline-flex;align-items:center;gap:6px;font-family:'JetBrains Mono',monospace;font-size:11.5px;font-weight:600;color:var(--accent);background:var(--accent-light);padding:5px 11px;border-radius:999px;border:1px solid rgba(79,70,229,.15)}.lh-pill.gold{color:var(--gold);background:var(--gold-light);border-color:rgba(180,83,9,.15)}.lh-pill.muted{color:var(--text-secondary);background:var(--surface-2);border-color:var(--border)}.lesson-h1{font-size:30px;font-weight:800;letter-spacing:-.02em;line-height:1.25;color:var(--text-primary);margin-bottom:14px}.lh-meta-bottom{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--text-muted)}.lh-author{display:flex;align-items:center;gap:9px}.lh-meta-bottom .actions{margin-right:auto;display:flex;gap:6px}.tabs-wrap{background:var(--surface);border:1px solid var(--border);border-radius:14px;overflow:hidden;margin-top:24px}.tab-bar{display:flex;border-bottom:1px solid var(--border);overflow-x:auto;scrollbar-width:none;position:relative}.tab-bar::-webkit-scrollbar{display:none}.tab-btn{padding:18px 24px;font-size:14px;font-weight:600;color:var(--text-secondary);position:relative;transition:color .2s ease;display:inline-flex;align-items:center;gap:8px;white-space:nowrap;background:0 0;border:none;cursor:pointer}.tab-btn.active,.tab-btn:hover{color:var(--text-primary)}.tab-btn::after{content:'';position:absolute;bottom:-1px;right:24px;left:24px;height:2px;background:var(--grad-accent);transform:scaleX(0);transform-origin:right;transition:transform .3s cubic-bezier(.4,0,.2,1)}.tab-btn.active::after{transform:scaleX(1)}.tab-btn .badge{font-family:'JetBrains Mono',monospace;font-size:10.5px;background:var(--surface-2);color:var(--text-secondary);padding:2px 7px;border-radius:999px;font-weight:600;border:1px solid var(--border)}.tab-btn.active .badge{background:var(--accent-light);color:var(--accent);border-color:rgba(79,70,229,.2)}.tab-btn .badge.ai{background:rgba(5,150,105,.1);color:var(--ai);border-color:rgba(5,150,105,.2)}.tab-panels{padding:0}.tab-panel{display:none;padding:32px}.tab-panel.active{display:block;animation:tabFadeIn .3s ease}@keyframes tabFadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.outline-toggle{display:none;width:100%;padding:14px 18px;background:var(--surface);border:1px solid var(--border);border-radius:12px;font-size:14px;font-weight:600;color:var(--text-primary);justify-content:space-between;align-items:center;margin-bottom:16px;cursor:pointer}@media(max-width:1100px){.course-grid-page{grid-template-columns:300px minmax(0,1fr);gap:24px}}@media(max-width:900px){.course-grid-page{grid-template-columns:1fr;gap:20px}.outline{position:static;max-height:none;order:2}.main-col{order:1}.outline-toggle{display:flex}.outline.collapsed{display:none}.lesson-h1{font-size:24px}}.rmz-comments{display:flex;flex-direction:column;gap:28px}.rmz-comments *{box-sizing:border-box}.rmz-comments-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.rmz-comments-title{font-size:18px;font-weight:700;color:var(--text-primary);margin:0;letter-spacing:-.01em}.rmz-comments-cta{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--accent);padding:8px 14px;border-radius:8px;background:var(--accent-light);border:1px solid rgba(79,70,229,.15);transition:all .2s ease}.rmz-comments-cta:hover{background:rgba(79,70,229,.12);transform:translateY(-1px)}.rmz-comments-closed{text-align:center;color:var(--text-muted);padding:30px 0;font-size:14px}.rmz-comment-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:18px}.rmz-comment-list .children{list-style:none;margin:18px 0 0;padding-right:24px;border-right:2px dashed var(--border);display:flex;flex-direction:column;gap:18px}.rmz-comment{margin:0}.rmz-comment-body{display:flex;gap:14px;padding:18px;background:var(--surface);border:1px solid var(--border);border-radius:14px;transition:border-color .2s ease}.rmz-comment-body:hover{border-color:var(--border-strong)}.rmz-comment.is-author>.rmz-comment-body{background:linear-gradient(135deg,rgba(79,70,229,.04),rgba(124,58,237,.04));border-color:rgba(79,70,229,.2)}.rmz-comment.is-admin>.rmz-comment-body{background:linear-gradient(135deg,rgba(180,83,9,.04),rgba(217,119,6,.04));border-color:rgba(180,83,9,.2)}.rmz-comment.is-pending>.rmz-comment-body{background:repeating-linear-gradient(135deg,var(--surface),var(--surface) 10px,var(--surface-2) 10px,var(--surface-2) 20px);opacity:.85}.rmz-comment-avatar-wrap{flex-shrink:0;width:44px;height:44px;border-radius:50%;overflow:hidden;display:flex;align-items:center;justify-content:center;background:var(--accent-light);color:var(--accent);font-weight:700;font-size:16px}.rmz-comment-avatar{width:44px;height:44px;border-radius:50%;display:block}.rmz-comment-fallback{display:flex;align-items:center;justify-content:center;width:100%;height:100%;font-family:Vazirmatn,sans-serif}.rmz-comment-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:8px}.rmz-comment-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--text-secondary)}.rmz-comment-author{font-weight:700;color:var(--text-primary);font-size:14px}.rmz-comment-author a{color:inherit}.rmz-comment-tag{display:inline-flex;align-items:center;font-family:'JetBrains Mono',monospace;font-size:10.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;padding:2px 7px;border-radius:6px;line-height:1.5}.rmz-comment-tag.is-author{background:var(--accent-light);color:var(--accent);border:1px solid rgba(79,70,229,.2)}.rmz-comment-tag.is-admin{background:var(--gold-light);color:var(--gold);border:1px solid rgba(180,83,9,.2)}.rmz-comment-dot{color:var(--text-muted);opacity:.5}.rmz-comment-time{font-size:12.5px;color:var(--text-muted);font-family:'JetBrains Mono',monospace;direction:ltr;unicode-bidi:isolate}.rmz-comment-pending{font-size:11px;font-weight:600;color:#b45309;background:#fef3c7;padding:2px 8px;border-radius:999px;border:1px solid rgba(180,83,9,.2)}.rmz-comment-text{color:var(--text-primary);font-size:14.5px;line-height:1.85;word-wrap:break-word}.rmz-comment-text p{margin:0 0 10px}.rmz-comment-text p:last-child{margin-bottom:0}.rmz-comment-text a{color:var(--accent);text-decoration:underline;text-decoration-color:rgba(79,70,229,.3);text-underline-offset:3px}.rmz-comment-text a:hover{text-decoration-color:var(--accent)}.rmz-comment-text code{background:var(--surface-2);padding:2px 6px;border-radius:4px;font-family:'JetBrains Mono',monospace;font-size:13px;direction:ltr;unicode-bidi:isolate}.rmz-comment-actions{display:flex;align-items:center;gap:14px;font-size:13px;margin-top:4px}.rmz-comment-actions .comment-reply-link,.rmz-comment-actions a{display:inline-flex;align-items:center;gap:5px;color:var(--text-muted);font-weight:500;padding:4px 8px;border-radius:6px;transition:all .15s ease;font-size:12.5px}.rmz-comment-actions .comment-reply-link:hover,.rmz-comment-actions a:hover{background:var(--surface-2);color:var(--accent)}.rmz-comment-edit{font-family:'JetBrains Mono',monospace;font-size:11.5px!important}.rmz-comments-pager{display:flex;justify-content:space-between;gap:14px;margin-top:8px}.rmz-comments-pager a{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border:1px solid var(--border);border-radius:8px;font-size:13px;color:var(--text-secondary);background:var(--surface);transition:all .2s ease}.rmz-comments-pager a:hover{color:var(--accent);border-color:var(--accent);background:var(--accent-light)}#respond,.rmz-comment-form{margin-top:8px}#respond{display:flex;flex-direction:column;gap:14px;padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:14px;position:relative}#respond::before{content:'';position:absolute;top:0;right:0;left:0;height:2px;background:var(--grad-accent);border-radius:14px 14px 0 0;opacity:.7}#reply-title{font-size:16px;font-weight:700;color:var(--text-primary);margin:0;display:flex;align-items:baseline;gap:10px}#reply-title small{font-size:12.5px;font-weight:500}#reply-title small a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}.rmz-comment-form{display:contents}.rmz-form-row{display:flex;flex-direction:column;gap:6px;margin:0}.rmz-form-row label{font-size:13px;font-weight:600;color:var(--text-secondary)}.rmz-form-row .req{color:#dc2626;font-weight:700}.rmz-form-row input[type=email],.rmz-form-row input[type=text],.rmz-form-row input[type=url],.rmz-form-row textarea{width:100%;padding:11px 14px;background:var(--bg);border:1px solid var(--border);border-radius:10px;font-family:inherit;font-size:14px;color:var(--text-primary);line-height:1.7;outline:0;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;resize:vertical}.rmz-form-row input:focus,.rmz-form-row textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow);background:var(--surface)}.rmz-form-row input::placeholder,.rmz-form-row textarea::placeholder{color:var(--text-muted)}.rmz-form-row textarea{min-height:120px;font-family:inherit}@media (min-width:640px){.rmz-comment-form>.rmz-form-row:not(.rmz-form-message){display:inline-flex;width:calc(50% - 7px)}.rmz-comment-form>.rmz-form-row:not(.rmz-form-message):first-of-type{margin-left:14px}}.rmz-form-cookies{margin:0;font-size:13px;color:var(--text-secondary);display:flex;align-items:center;gap:8px}.rmz-form-cookies label{display:inline-flex;align-items:center;gap:8px;cursor:pointer;user-select:none}.rmz-form-cookies input[type=checkbox]{width:16px;height:16px;accent-color:var(--accent);cursor:pointer}.rmz-form-logged-in{margin:0;font-size:13px;color:var(--text-secondary);background:var(--surface-2);padding:10px 14px;border-radius:8px;border:1px solid var(--border)}.rmz-form-logged-in a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;font-weight:500}.rmz-form-must-login{margin:0;text-align:center;font-size:14px;color:var(--text-secondary);padding:14px;background:var(--surface-2);border-radius:8px}.rmz-form-must-login a{color:var(--accent);font-weight:600;text-decoration:underline;text-underline-offset:3px}.rmz-form-submit{display:flex;align-items:center;gap:12px;margin:6px 0 0}.rmz-form-submit input[type=hidden]{display:none}.rmz-submit{cursor:pointer;font-family:inherit;border:1px solid transparent;display:inline-flex;align-items:center;gap:8px;padding:13px 24px;font-size:14.5px;font-weight:600;border-radius:10px;line-height:1;background:var(--grad-accent);color:#fff;box-shadow:0 0 0 3px rgba(79,70,229,.15),0 2px 8px rgba(79,70,229,.3);transition:all .2s ease}.rmz-submit:hover{transform:translateY(-1px);box-shadow:0 0 0 4px rgba(79,70,229,.18),0 8px 20px rgba(79,70,229,.38)}.rmz-submit:active{transform:translateY(0)}.rmz-submit:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}.rmz-submit svg{width:15px;height:15px}#cancel-comment-reply-link{font-size:12.5px;color:var(--text-muted);font-weight:500;padding:4px 10px;border-radius:6px;background:0 0;transition:all .15s ease}#cancel-comment-reply-link:hover{color:#dc2626;background:rgba(220,38,38,.06)}.rmz-comments .wp-block-button__link,.rmz-comments .wp-element-button{background:var(--grad-accent)!important;color:#fff!important;border:0!important;padding:13px 24px!important;font-size:14.5px!important;font-weight:600!important;border-radius:10px!important}@media (max-width:640px){.rmz-comment-body{padding:14px;gap:11px;border-radius:12px}.rmz-comment-avatar,.rmz-comment-avatar-wrap{width:38px;height:38px}.rmz-comment-list .children{padding-right:14px}#respond{padding:18px;border-radius:12px}.rmz-submit{width:100%;justify-content:center}}.lesson-crumb{background:var(--surface);padding:9px 0 0}.lesson-breadcrumb{font-size:12.5px;line-height:1.7;color:var(--text-muted)}.lesson-breadcrumb a{color:var(--text-secondary);text-decoration:none}.lesson-breadcrumb a:hover{color:var(--accent)}.lesson-breadcrumb .breadcrumb_last{color:var(--text-primary);font-weight:600}.lesson-header{margin:0 0 16px}.lesson-header .lh-meta-row{margin-bottom:10px}.lesson-header .lesson-h1{margin-bottom:10px}.lesson-intro{margin:0;font-size:15px;line-height:1.85;color:var(--text-secondary);max-width:64ch}.lesson-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:16px;padding:0 6px;font-size:13px;color:var(--text-muted)}.lesson-meta-item{display:inline-flex;align-items:center;gap:7px}.lesson-meta .lm-avatar{width:24px;height:24px;border-radius:50%;background:var(--accent-light);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:11px}.lesson-meta .lesson-duration{font-family:'JetBrains Mono',monospace}.lesson-key-points,.lesson-transcript{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:24px 28px;margin-top:24px}.lesson-key-points h2,.lesson-transcript h2{font-size:18px;font-weight:700;color:var(--text-primary);letter-spacing:-.01em;margin:0 0 14px}.lesson-key-points ul{margin:0;padding-right:20px;display:flex;flex-direction:column;gap:9px;list-style:disc}.lesson-key-points li{font-size:14.5px;line-height:1.8;color:var(--text-secondary)}.lesson-transcript-body{max-height:440px;overflow-y:auto;padding-left:8px}.lesson-transcript-body p{margin:0 0 12px;font-size:14px;line-height:1.95;color:var(--text-secondary)}.lesson-transcript-body p:last-child{margin-bottom:0}.lesson-navigation{display:flex;justify-content:space-between;gap:14px;margin-top:24px}.lesson-nav-link{display:flex;flex-direction:column;gap:4px;max-width:calc(50% - 7px);padding:15px 18px;background:var(--surface);border:1px solid var(--border);border-radius:12px;text-decoration:none;transition:border-color .2s ease,transform .2s ease}.lesson-nav-link:hover{border-color:var(--accent);transform:translateY(-1px)}.lesson-nav-link.prev{text-align:right}.lesson-nav-link.next{text-align:left;margin-right:auto}.lesson-nav-link.is-empty{visibility:hidden;pointer-events:none;border:0;background:none;padding:0}.lesson-nav-link .lnl-dir{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--text-muted)}.lesson-nav-link .lnl-title{font-size:13.5px;font-weight:600;color:var(--text-primary);line-height:1.5}@media(max-width:640px){.lesson-key-points,.lesson-transcript{padding:18px 16px}.lesson-navigation{flex-direction:column}.lesson-nav-link{max-width:none}.lesson-nav-link.next{margin-right:0}}