:root{--color-primary: #0052cc;--color-primary-hover: #0047b3;--color-secondary: #6554c0;--color-success: #36b37e;--color-warning: #ffab00;--color-error: #ff5630;--color-info: #00b8d9;--color-bg-app: #f4f5f7;--color-bg-panel: #ffffff;--color-bg-hover: #ebecf0;--color-bg-selected: #e6effc;--color-text-main: #172b4d;--color-text-sub: #5e6c84;--color-text-muted: #97a0af;--color-border: #dfe1e6;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;--font-size-sm: 12px;--font-size-md: 14px;--font-size-lg: 16px;--font-size-xl: 20px;--shadow-sm: 0 1px 2px rgba(9, 30, 66, .25);--shadow-md: 0 4px 8px -2px rgba(9, 30, 66, .25), 0 0 1px rgba(9, 30, 66, .31);--shadow-lg: 0 8px 16px -4px rgba(9, 30, 66, .25), 0 0 1px rgba(9, 30, 66, .31);--radius-sm: 3px;--radius-md: 6px;--radius-lg: 12px}body{margin:0;font-family:var(--font-family);background-color:var(--color-bg-app);color:var(--color-text-main);-webkit-font-smoothing:antialiased}*{box-sizing:border-box}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#c1c7d0;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#a5adba}.history-panel-container{padding:16px;height:100%;display:flex;flex-direction:column;color:#333}.history-title{font-size:14px;font-weight:600;color:#64748b;margin-bottom:12px;display:flex;align-items:center;gap:8px}.history-search-container{margin-bottom:16px}.history-search-input{width:100%;padding:8px 12px;border:1px solid #e2e8f0;border-radius:8px;font-size:13px;color:#334155;background:#fff;outline:none;transition:all .2s}.history-search-input:focus{border-color:#6366f1;box-shadow:0 0 0 3px 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h3{margin:0;font-size:var(--font-size-md);color:var(--color-text-main)}.close-btn{background:none;border:none;color:var(--color-text-sub);cursor:pointer;padding:4px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center}.close-btn:hover{background-color:var(--color-bg-hover);color:var(--color-text-main)}.file-detail-content{padding:var(--spacing-md)}.detail-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--color-border)}.detail-row:last-child{border-bottom:none}.detail-label{font-size:var(--font-size-sm);color:var(--color-text-sub)}.detail-value{font-size:var(--font-size-sm);color:var(--color-text-main);font-weight:500}.divider-text{font-size:10px;color:var(--color-text-sub);margin:8px 0;font-weight:500;opacity:.7}.paste-btn{display:flex;align-items:center;gap:4px;padding:4px 10px;background-color:#fff;border:1px solid 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