:root{--bg-app-window:#0c0f14;--bg-app-body:#111622;--bg-card:#161d2b;--bg-btn:#1d2637;--bg-btn-hover:#253147;--text-main:#fff;--text-muted:#64748b;--accent-green:#059669;--accent-green-active:#10b981;--accent-green-alpha:rgba(16,185,129,.12);--accent-amber:#f59e0b;--accent-indigo:#6366f1;--border-line:#222f47}body{background-color:#06080c;font-family:'Plus Jakarta Sans',sans-serif;color:var(--text-main);-webkit-font-smoothing:antialiased}.app-window{background-color:var(--bg-app-window);border:1px solid var(--border-line);border-radius:14px;overflow:hidden;box-shadow:0 25px 50px -12px rgba(0,0,0,.6)}.app-header{padding:16px 28px;border-bottom:1px solid var(--border-line)}.app-logo{color:var(--accent-green-active);font-size:1.25rem;display:flex;align-items:center}.app-title{font-weight:700;font-size:.9rem;letter-spacing:-.2px}.window-controls span{width:11px;height:11px;background-color:var(--border-line);border-radius:50%;display:inline-block}.app-body{padding:36px;background-color:var(--bg-app-body)}.step-label{font-size:.72rem;font-weight:800;color:var(--text-muted);letter-spacing:1px}.btn-custom{background-color:var(--bg-btn);border:1px solid transparent;color:#94a3b8;padding:10px 22px;border-radius:40px;font-size:.85rem;font-weight:600;transition:all .2s cubic-bezier(.16,1,.3,1)}.btn-custom:hover{background-color:var(--bg-btn-hover);color:var(--text-main)}.btn-custom.active{background-color:var(--accent-green-alpha);border-color:var(--accent-green-active);color:var(--accent-green-active)}.path-meta-summary{font-size:.82rem;font-weight:700;color:var(--accent-green-active)}.timeline-wrapper{position:relative}.timeline-item{position:relative;display:flex;gap:26px;margin-bottom:28px}.timeline-item:last-child{margin-bottom:0}.timeline-item:not(:last-child)::after {content:'';position:absolute;left:21px;top:42px;bottom:-36px;width:2px;background-color:var(--accent-green-active);z-index:1}.timeline-badge{width:44px;height:44px;border-radius:50%;border:2px solid var(--accent-green-active);background-color:var(--bg-app-body);color:var(--accent-green-active);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.92rem;z-index:2;flex-shrink:0}.timeline-card{background-color:var(--bg-card);border-radius:12px;padding:24px;flex-grow:1;display:flex;border:1px solid rgba(255,255,255,.01)}.card-main-content{width:100%}.card-header-block{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:6px;gap:16px}.card-title{font-size:1.05rem;font-weight:700;color:var(--text-main);margin:0}.card-description{font-size:.85rem;color:var(--text-muted);margin-bottom:18px;line-height:1.4}.meta-tags{display:flex;gap:18px;font-size:.8rem;color:var(--text-muted);font-weight:600}.meta-tags i{margin-right:5px}.tag-lessons i{color:var(--accent-green-active)}.tag-quizzes i{color:var(--accent-amber)}.tag-exercises i{color:var(--accent-indigo)}.card-duration{font-size:.8rem;color:var(--text-muted);font-weight:600;white-space:nowrap}.skeleton-shimmer{background:linear-gradient(90deg,#161d2b 25%,#202a3d 50%,#161d2b 75%);background-size:200% 100%;animation:asset-loading-shimmer 1.5s infinite linear}@keyframes asset-loading-shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}.skeleton-badge{border-color:var(--border-line);background:#161d2b}.skeleton-line{height:14px;border-radius:4px;background-color:var(--border-line)}.skeleton-title{width:210px;height:18px}.skeleton-desc{width:100%;max-width:360px;height:12px;margin-bottom:22px}.skeleton-meta{width:100%;max-width:260px;height:12px}.skeleton-right{width:70px;height:12px}@media (max-width:768px){.app-body{padding:20px 14px}.timeline-item{gap:14px;margin-bottom:20px}.timeline-badge{width:32px;height:32px;font-size:.82rem}.timeline-item:not(:last-child)::after {left:15px;top:32px;bottom:-28px}.timeline-card{padding:16px}.card-header-block{flex-direction:column;align-items:flex-start;gap:4px;margin-bottom:8px}.card-duration{font-size:.78rem}.meta-tags{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;width:100%}.skeleton-title{width:130px}.skeleton-right{width:60px}}