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20%,rgba(124,106,255,.12) 50%,rgba(124,106,255,.06) 80%,transparent 100%);background-size:200% 100%;animation:skeleton-shimmer 1.8s ease-in-out infinite}@keyframes skeleton-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.skeleton-viewer{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:20px;padding:40px;background:var(--surface-2);position:relative;overflow:hidden}.skeleton-viewer:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,transparent 0%,rgba(124,106,255,.04) 20%,rgba(124,106,255,.08) 50%,rgba(124,106,255,.04) 80%,transparent 100%);background-size:200% 100%;animation:skeleton-shimmer 1.8s ease-in-out infinite;pointer-events:none}.skeleton-viewer .skel-shape{border-radius:var(--radius-sm);background:#ffffff08}.skeleton-viewer .skel-circle{width:100px;height:100px;border-radius:50%;background:#ffffff08;border:2px solid rgba(124,106,255,.08)}.skeleton-viewer .skel-line{height:10px;border-radius:5px;background:#ffffff0a}.skeleton-viewer .skel-line.w60{width:60%}.skeleton-viewer .skel-line.w40{width:40%}.skeleton-viewer .skel-line.w80{width:80%}.skeleton-file-info{display:flex;justify-content:space-between;align-items:center;padding:18px 24px}.skeleton-file-info .skel-block{border-radius:6px;background:#ffffff0a;position:relative;overflow:hidden}.skeleton-file-info .skel-block:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,transparent 0%,rgba(124,106,255,.08) 50%,transparent 100%);background-size:200% 100%;animation:skeleton-shimmer 1.8s ease-in-out infinite}.skeleton-controls{padding:28px}.skeleton-controls .skel-toggle{display:flex;gap:4px;background:var(--bg);border-radius:var(--radius-sm);padding:4px;margin-bottom:24px;height:42px}.skeleton-controls .skel-toggle-item{flex:1;border-radius:6px;background:#ffffff08;position:relative;overflow:hidden}.skeleton-controls .skel-toggle-item:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,transparent 0%,rgba(124,106,255,.06) 50%,transparent 100%);background-size:200% 100%;animation:skeleton-shimmer 1.8s ease-in-out infinite}.skeleton-controls .skel-slider{margin-bottom:20px}.skeleton-controls .skel-slider-label{height:14px;width:50%;border-radius:7px;background:#ffffff0a;margin-bottom:10px;position:relative;overflow:hidden}.skeleton-controls .skel-slider-label:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,transparent 0%,rgba(124,106,255,.06) 50%,transparent 100%);background-size:200% 100%;animation:skeleton-shimmer 1.8s ease-in-out infinite}.skeleton-controls .skel-slider-track{height:5px;border-radius:3px;background:#ffffff08;position:relative;overflow:hidden}.skeleton-controls .skel-slider-track:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,transparent 0%,rgba(124,106,255,.06) 50%,transparent 100%);background-size:200% 100%;animation:skeleton-shimmer 1.8s ease-in-out infinite}.skeleton-controls .skel-button{height:44px;border-radius:var(--radius-sm);background:#7c6aff1a;margin-top:8px;position:relative;overflow:hidden}.skeleton-controls .skel-button:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,transparent 0%,rgba(124,106,255,.08) 50%,transparent 100%);background-size:200% 100%;animation:skeleton-shimmer 1.8s ease-in-out infinite}.hidden{display:none!important}@media(max-width:768px){#app{padding:24px 16px 60px}header{margin-bottom:36px}header h1{font-size:32px}.dropzone{padding:48px 24px}.viewer-area{grid-template-columns:1fr}.controls{padding:20px}}