:root{--color-primary: #2563EB;--color-primary-hover: #1D4ED8;--color-primary-light: #EFF6FF;--color-bg: #FFFFFF;--color-bg-secondary: #F8FAFC;--color-bg-tertiary: #F1F5F9;--color-border: #E2E8F0;--color-border-light: #F1F5F9;--color-text: #0F172A;--color-text-secondary: #475569;--color-text-tertiary: #94A3B8;--color-supports: #059669;--color-supports-bg: #D1FAE5;--color-contradicts: #DC2626;--color-contradicts-bg: #FEE2E2;--color-tangential: #D97706;--color-tangential-bg: #FEF3C7;--color-saved: #7C3AED;--color-saved-bg: #EDE9FE;--font-sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "IBM Plex Mono", monospace;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--sidebar-width: 280px;--detail-width: 480px;--header-height: 64px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--transition-fast: .15s ease;--transition-normal: .2s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:var(--font-sans);font-size:14px;line-height:1.5;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}h1,h2,h3,h4{font-weight:600;line-height:1.25}h1{font-size:24px}h2{font-size:20px}h3{font-size:16px}h4{font-size:14px}.app{display:flex;flex-direction:column;height:100%}.main-layout{display:flex;flex:1;overflow:hidden}.header{height:var(--header-height);background:var(--color-bg);border-bottom:1px solid var(--color-border);display:flex;align-items:center;padding:0 var(--spacing-lg);gap:var(--spacing-lg)}.logo{display:flex;align-items:center;gap:var(--spacing-sm);font-weight:600;font-size:18px;color:var(--color-primary);cursor:pointer}.logo svg{width:28px;height:28px}.header-actions{display:flex;align-items:center;gap:var(--spacing-sm);margin-left:auto}.search-panel{flex:1;display:flex;flex-direction:column;background:var(--color-bg);border-right:1px solid var(--color-border);max-width:600px}.search-header{padding:var(--spacing-lg);border-bottom:1px solid var(--color-border)}.search-header h2{margin-bottom:var(--spacing-xs)}.search-header p{color:var(--color-text-secondary);font-size:13px}.search-form{padding:var(--spacing-lg)}.search-textarea{width:100%;min-height:120px;padding:var(--spacing-md);border:1px solid var(--color-border);border-radius:8px;font-family:var(--font-sans);font-size:14px;line-height:1.6;resize:vertical;transition:border-color var(--transition-fast)}.search-textarea:focus{outline:none;border-color:var(--color-primary)}.search-textarea::placeholder{color:var(--color-text-tertiary)}.search-options{display:flex;gap:var(--spacing-md);margin-top:var(--spacing-md);flex-wrap:wrap}.search-btn{margin-top:var(--spacing-md)}.results-panel{flex:1;display:flex;flex-direction:column;background:var(--color-bg-secondary);overflow:hidden}.results-header{padding:var(--spacing-md) var(--spacing-lg);background:var(--color-bg);border-bottom:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between}.results-tabs{display:flex;gap:var(--spacing-xs)}.tab{padding:var(--spacing-sm) var(--spacing-md);border-radius:6px;font-size:13px;font-weight:500;cursor:pointer;transition:all var(--transition-fast);background:transparent;border:none;color:var(--color-text-secondary)}.tab:hover{background:var(--color-bg-tertiary)}.tab.active{background:var(--color-primary-light);color:var(--color-primary)}.tab-count{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;padding:0 6px;border-radius:10px;font-size:11px;font-weight:600;margin-left:6px}.tab.supports .tab-count{background:var(--color-supports-bg);color:var(--color-supports)}.tab.contradicts .tab-count{background:var(--color-contradicts-bg);color:var(--color-contradicts)}.tab.tangential .tab-count{background:var(--color-tangential-bg);color:var(--color-tangential)}.tab.all .tab-count{background:var(--color-bg-tertiary);color:var(--color-text-secondary)}.results-list{flex:1;overflow-y:auto;padding:var(--spacing-md)}.paper-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:8px;padding:var(--spacing-md);margin-bottom:var(--spacing-sm);cursor:pointer;transition:all var(--transition-fast)}.paper-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-sm)}.paper-card.selected{border-color:var(--color-primary);background:var(--color-primary-light)}.paper-header{display:flex;align-items:flex-start;gap:var(--spacing-sm);margin-bottom:var(--spacing-sm)}.paper-title{flex:1;font-weight:600;font-size:14px;line-height:1.4}.paper-meta{display:flex;gap:var(--spacing-md);font-size:12px;color:var(--color-text-secondary);margin-bottom:var(--spacing-sm)}.paper-authors{font-size:13px;color:var(--color-text-secondary);margin-bottom:var(--spacing-sm)}.paper-abstract{font-size:13px;line-height:1.6;color:var(--color-text-secondary);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.paper-relevance{margin-top:var(--spacing-sm);padding-top:var(--spacing-sm);border-top:1px solid var(--color-border-light);font-size:12px;color:var(--color-text-secondary)}.paper-relevance strong{color:var(--color-text)}.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:500;text-transform:uppercase;letter-spacing:.5px;flex-shrink:0}.badge-supports{background:var(--color-supports-bg);color:var(--color-supports)}.badge-contradicts{background:var(--color-contradicts-bg);color:var(--color-contradicts)}.badge-tangential{background:var(--color-tangential-bg);color:var(--color-tangential)}.badge-saved{background:var(--color-saved-bg);color:var(--color-saved)}.detail-panel{width:var(--detail-width);background:var(--color-bg);border-left:1px solid var(--color-border);display:flex;flex-direction:column;overflow:hidden}.detail-panel.empty{align-items:center;justify-content:center;color:var(--color-text-tertiary);text-align:center;padding:var(--spacing-xl)}.detail-panel.empty svg{width:48px;height:48px;margin-bottom:var(--spacing-md);opacity:.5}.detail-header{padding:var(--spacing-lg);border-bottom:1px solid var(--color-border);display:flex;align-items:flex-start;justify-content:space-between;gap:var(--spacing-md)}.detail-content{flex:1;overflow-y:auto;padding:var(--spacing-lg)}.detail-section{margin-bottom:var(--spacing-lg)}.detail-section h4{color:var(--color-text-secondary);font-size:11px;text-transform:uppercase;letter-spacing:.5px;margin-bottom:var(--spacing-sm)}.detail-actions{padding:var(--spacing-lg);border-top:1px solid var(--color-border);display:flex;gap:var(--spacing-sm)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);border:none;border-radius:6px;font-family:var(--font-sans);font-size:14px;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-hover)}.btn-primary:disabled{background:var(--color-text-tertiary);cursor:not-allowed}.btn-secondary{background:var(--color-bg-tertiary);color:var(--color-text)}.btn-secondary:hover{background:var(--color-border)}.btn-ghost{background:transparent;color:var(--color-text-secondary)}.btn-ghost:hover{background:var(--color-bg-tertiary);color:var(--color-text)}.btn-icon{padding:var(--spacing-sm)}.btn-sm{padding:var(--spacing-xs) var(--spacing-sm);font-size:13px}.btn-block{width:100%}.input,.select{width:100%;padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--color-border);border-radius:6px;font-family:var(--font-sans);font-size:14px;transition:border-color var(--transition-fast);background:var(--color-bg)}.input:focus,.select:focus{outline:none;border-color:var(--color-primary)}.select{-webkit-appearance:none;-moz-appearance:none;appearance:none;padding-right:var(--spacing-xl);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center}.checkbox-label{display:flex;align-items:center;gap:var(--spacing-sm);font-size:13px;cursor:pointer}.checkbox-label input{width:16px;height:16px}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl);text-align:center;color:var(--color-text-secondary)}.empty-state svg{width:64px;height:64px;margin-bottom:var(--spacing-md);opacity:.4}.empty-state h3{margin-bottom:var(--spacing-sm);color:var(--color-text)}.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl);color:var(--color-text-secondary)}.spinner{width:32px;height:32px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite;margin-bottom:var(--spacing-md)}@keyframes spin{to{transform:rotate(360deg)}}.drawer-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:1000}.drawer{position:fixed;top:0;right:0;bottom:0;width:400px;max-width:100%;background:var(--color-bg);box-shadow:var(--shadow-lg);z-index:1001;display:flex;flex-direction:column;transform:translate(100%);transition:transform var(--transition-normal)}.drawer.open{transform:translate(0)}.drawer-header{padding:var(--spacing-lg);border-bottom:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between}.drawer-content{flex:1;overflow-y:auto;padding:var(--spacing-md)}.citation-box{background:var(--color-bg-secondary);border-radius:6px;padding:var(--spacing-md);font-family:var(--font-mono);font-size:12px;line-height:1.6;position:relative}.citation-copy-btn{position:absolute;top:var(--spacing-sm);right:var(--spacing-sm)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--color-text-tertiary)}@media (max-width: 1200px){.search-panel{max-width:400px}.detail-panel{width:400px}}@media (max-width: 1024px){.search-panel{display:none}.detail-panel{position:fixed;right:0;top:var(--header-height);bottom:0;width:100%;max-width:480px;z-index:200;transform:translate(100%)}.detail-panel.open{transform:translate(0)}}@media (max-width: 768px){:root{--header-height: 56px}.header{padding:0 var(--spacing-md)}.detail-panel{max-width:100%}.drawer{width:100%}}