*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:#f0f2f5;color:#333;min-height:100vh}.app{max-width:1400px;margin:0 auto;padding:0 20px}.header{text-align:center;padding:24px 0 16px}.header-title{display:flex;align-items:center;justify-content:center;gap:12px}.logo{font-size:36px}.header h1{font-size:28px;font-weight:700;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.header-desc{color:#888;margin-top:4px;font-size:14px}.main-content{display:flex;gap:20px;margin-top:16px}.sidebar{width:280px;flex-shrink:0;display:flex;flex-direction:column;gap:16px}.upload-area{background:#fff;border:2px dashed #d9d9d9;border-radius:12px;padding:24px;text-align:center;cursor:pointer;transition:all .3s}.upload-area:hover,.upload-area.drag-over{border-color:#667eea;background:#f0f3ff}.upload-placeholder{padding:20px 0}.upload-icon{font-size:48px;margin-bottom:12px}.upload-hint{color:#666;font-size:14px}.upload-sub{color:#999;font-size:12px;margin-top:4px}.preview-container{position:relative}.preview-image{width:100%;border-radius:8px;display:block}.settings{background:#fff;border-radius:12px;padding:20px}.settings h3{font-size:16px;margin-bottom:16px;color:#333}.setting-group{margin-bottom:14px}.setting-group label{display:block;font-size:13px;color:#555;margin-bottom:6px}.setting-group label strong{color:#667eea}.setting-group input[type=range]{width:100%;height:6px;-webkit-appearance:none;background:#e8e8e8;border-radius:3px;outline:none}.setting-group input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:#667eea;cursor:pointer}.setting-group input[type=checkbox]{margin-right:6px}.setting-group.sub{padding-left:20px}.hint{font-size:11px;color:#aaa}.workspace{flex:1;background:#fff;border-radius:12px;padding:20px;position:relative;min-height:400px;display:flex;flex-direction:column}.grid-container{flex:1;overflow:hidden;display:flex;justify-content:center;align-items:center;padding:10px;border:1px solid #eee;border-radius:8px;background:#fafafa;height:500px}.grid-canvas{max-width:100%;max-height:100%;object-fit:contain;image-rendering:pixelated}.processing-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:#ffffffe6;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:16px;z-index:10;border-radius:12px}.spinner{width:40px;height:40px;border:4px solid #e8e8e8;border-top:4px solid #667eea;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.fullscreen-cropper{position:fixed;top:0;left:0;right:0;bottom:0;z-index:9999;background:#1a1a2e;display:flex;flex-direction:column;-webkit-user-select:none;user-select:none}.fullscreen-cropper-canvas{flex:1;width:100%;display:block}.cropper-topbar{height:auto;min-height:56px;display:flex;flex-direction:column;align-items:stretch;padding:8px 16px;gap:8px;background:#1a1a2ef2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.1);flex-shrink:0}.cropper-topbar-left{display:flex;align-items:center;gap:10px}.cropper-topbar-title{color:#fff;font-size:15px;font-weight:600}.cropper-topbar-size{color:#fff9;font-size:13px}.cropper-topbar-right{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.cropper-topbar-right .btn-sm{background:#ffffff1a;color:#fff;border:1px solid rgba(255,255,255,.2)}.cropper-topbar-right .btn-sm:hover{background:#fff3}.cropper-topbar-right .btn-sm.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);border-color:transparent}.cropper-hint{height:36px;display:flex;align-items:center;justify-content:center;color:#fff6;font-size:12px;background:#1a1a2ee6;flex-shrink:0}.btn-sm{padding:6px 14px;font-size:12px;border-radius:6px}.btn-sm:disabled{opacity:.4;cursor:not-allowed}.empty-state{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;color:#bbb}.empty-icon{font-size:64px;margin-bottom:16px}.empty-state h2{font-size:20px;color:#999;margin-bottom:8px}.toolbar{display:flex;align-items:center;gap:12px;margin-top:16px;padding-top:16px;border-top:1px solid #eee;flex-wrap:wrap}.btn{padding:10px 20px;border:none;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-primary:hover{opacity:.9;transform:translateY(-1px)}.btn-secondary{background:#f5f5f5;color:#555}.btn-secondary:hover{background:#e8e8e8}.toolbar-info{margin-left:auto;font-size:13px;color:#888}.toolbar-info strong{color:#667eea}.stats-panel{margin-top:20px;background:#fff;border-radius:12px;padding:20px}.stats-panel h3{font-size:16px;margin-bottom:12px}.stats-grid{display:flex;flex-wrap:wrap;gap:8px;max-height:300px;overflow-y:auto}.stat-item{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;background:#f8f8f8;border-radius:20px;font-size:13px}.color-dot{width:14px;height:14px;border-radius:50%;border:1px solid rgba(0,0,0,.1);flex-shrink:0}.stat-id{font-weight:600;color:#667eea}.stat-name{color:#666}.stat-count{font-weight:600;color:#e74c3c}.footer{text-align:center;padding:20px 0;color:#bbb;font-size:13px}@media(max-width:768px){.main-content{flex-direction:column}.sidebar{width:100%}.toolbar{flex-direction:column;align-items:stretch}.toolbar-info{margin-left:0;text-align:center}}