*{margin:0;padding:0;box-sizing:border-box}body{position:relative;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,sans-serif;background:linear-gradient(135deg,#f5f7fa,#e8edf5);color:#333;min-height:100vh}body:before{content:"";position:fixed;top:-200px;right:-200px;width:500px;height:500px;background:radial-gradient(circle,rgba(91,124,250,.08) 0%,transparent 70%);pointer-events:none;z-index:0}body:after{content:"";position:fixed;bottom:-200px;left:-200px;width:500px;height:500px;background:radial-gradient(circle,rgba(16,185,129,.06) 0%,transparent 70%);pointer-events:none;z-index:0}.container{max-width:720px;margin:0 auto;padding:40px 24px;position:relative;z-index:1}.hero{text-align:center;margin-bottom:28px}.hero__logo{font-size:24px;margin-bottom:16px;display:flex;align-items:center;justify-content:center;gap:8px}.hero__brand{font-weight:800;font-size:28px;color:#5b7cfa;letter-spacing:1px}.hero__title{font-size:28px;font-weight:700;color:#1a1a2e;margin-bottom:8px;line-height:1.3}.hero__subtitle{font-size:15px;color:#7a7a9a;line-height:1.5}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:32px}.feature-card{background:#fff;border-radius:12px;padding:24px;text-align:center;box-shadow:0 2px 8px #0000000f;transition:box-shadow .2s ease,transform .15s ease}.feature-card:hover{box-shadow:0 4px 16px #0000001a;transform:translateY(-1px)}.feature-card__icon{font-size:32px;margin-bottom:12px}.feature-card__title{font-size:16px;font-weight:700;color:#1a1a2e;margin-bottom:8px}.feature-card__desc{font-size:13px;color:#8a92a3;line-height:1.5}.drop-zone{min-height:240px;border:2px dashed #C8D0E0;border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;cursor:pointer;transition:all .2s ease;background:#fff;text-align:center;padding:24px}.drop-zone:hover{border-color:#5b7cfa;background:#5b7cfa0d}.drop-zone--active{border:3px solid #5B7CFA;background:#5b7cfa0d;transform:scale(1.01)}.drop-zone--error{border-color:#ef4444}.drop-zone__icon{margin-bottom:4px}.drop-zone__text{font-size:18px;font-weight:700;color:#1a1a2e}.drop-zone__hint{font-size:13px;color:#8a92a3;line-height:1.6}.selected-summary{font-size:15px;font-weight:600;color:#1a1a2e;margin-bottom:8px}.selected-list{width:100%;max-width:520px;max-height:160px;overflow-y:auto}.selected-row{display:flex;align-items:center;gap:10px;padding:6px 8px;border-radius:8px;transition:background .15s}.selected-row:hover{background:#00000008}.selected-row__icon{font-size:16px;flex-shrink:0}.selected-row__name{flex:1;font-size:13px;color:#333;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:left}.selected-row__size{font-size:12px;color:#888;flex-shrink:0}.selected-row__remove{background:none;border:none;font-size:14px;color:#bbb;cursor:pointer;padding:2px 6px;border-radius:4px;transition:all .15s;flex-shrink:0}.selected-row__remove:hover{color:#ef4444;background:#ef444414}.msg{text-align:center;margin-top:12px;font-size:14px}.msg--error{color:#ef4444}.action-bar{text-align:center;margin:20px 0 40px}.upload-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 20px #5b7cfa59!important}.section-title{font-size:20px;font-weight:700;color:#1a1a2e}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.section-header__actions{display:flex;align-items:center;gap:8px}.skeleton-list{display:flex;flex-direction:column;gap:12px}.skeleton-card{background:#fff;border-radius:12px;padding:20px;box-shadow:0 2px 8px #0000000f}.skeleton-line{height:14px;border-radius:8px;background:linear-gradient(90deg,#eee 25%,#f5f5f5,#eee 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;margin-bottom:10px}.skeleton-line--short{width:40%}.skeleton-line--long{width:80%}.skeleton-line--medium{width:60%}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.empty-state{text-align:center;padding:80px 24px;color:#8a92a3}.empty-state__icon{font-size:64px;margin-bottom:16px}.empty-state__title{font-size:16px;font-weight:500;margin-bottom:8px;color:#4a5568}.empty-state__desc{font-size:13px;line-height:1.6}.task-card{background:#fff;border-radius:12px;padding:16px 20px;margin-bottom:16px;box-shadow:0 2px 8px #0000000f;transition:box-shadow .2s ease,transform .15s ease;animation:cardFadeIn .3s ease}.task-card:hover{box-shadow:0 4px 16px #5b7cfa26;transform:translateY(-2px)}.task-card--changed{animation:statusFlash .6s ease}@keyframes cardFadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes statusFlash{0%{background:#fff}30%{background:#5b7cfa14}to{background:#fff}}.task-card__header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.task-card__filename{font-weight:700;font-size:15px;color:#1a1a2e;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;margin-right:12px}.task-card__body{margin-bottom:10px}.task-card__status-text{font-size:13px;color:#666;display:flex;align-items:center;gap:6px}.task-card__status-text--success{color:#10b981}.task-card__status-text--failed{color:#ef4444}.task-card__timer{font-variant-numeric:tabular-nums;min-width:2em;display:inline-block}.task-card__meta{color:#888}.task-card__footer{display:flex;justify-content:space-between;align-items:center}.task-card__time{font-size:12px;color:#aaa}.task-card__actions{display:flex;gap:8px}.n-tag{border-radius:6px!important}.spinner{display:inline-block;width:14px;height:14px;border:2px solid #ddd;border-top-color:#5b7cfa;border-radius:50%;animation:spin .6s linear infinite;flex-shrink:0}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 768px){.container{padding:24px 12px}.hero__title{font-size:22px}.hero__subtitle{font-size:14px}.features{grid-template-columns:1fr}.drop-zone{min-height:200px;padding:16px}.task-card{padding:14px 16px}.task-card__footer{flex-direction:column;align-items:flex-start;gap:8px}.task-card__actions{width:100%;justify-content:flex-end}}