/* CSS变量定义 */
        :root {
            --color-blue-primary: #0066ff;
            --color-blue-secondary: #3385ff;
            --color-blue-light: #66a3ff;
            --color-blue-lighter: #99c2ff;
            --color-blue-dark: #003d99;
            --color-blue-darkest: #001a33;
            --color-cyan: #00d4ff;
            --color-cyan-light: #33deff;
            --color-indigo: #4c5fff;
            --color-purple: #6b4eff;
            --color-teal: #00b8d4;
            --color-gray-50: #f9f9f9;
            --color-gray-100: #f5f5f7;
            --color-gray-200: #e5e5ea;
            --color-gray-300: #d1d1d6;
            --color-gray-400: #c7c7cc;
            --color-gray-500: #aeaeb2;
            --color-gray-600: #8e8e93;
            --color-gray-700: #636366;
            --color-gray-800: #48484a;
            --color-gray-900: #1c1c1e;
            --shadow-light: rgba(0, 0, 0, 0.04);
            --shadow-medium: rgba(0, 0, 0, 0.08);
            --shadow-heavy: rgba(0, 0, 0, 0.16);
            --shadow-blue: rgba(0, 102, 255, 0.24);
            --glow-blue: rgba(0, 102, 255, 0.4);
            --glow-cyan: rgba(0, 212, 255, 0.3);
        }

        /* 首页样式 */
        .home-page {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background: linear-gradient(135deg, 
                #0a0e27 0%, 
                #1a1f3a 20%, 
                #2d1b4e 40%, 
                #1e3a5f 60%, 
                #0f4c75 80%, 
                #0a0e27 100%);
            background-size: 200% 200%;
            animation: gradientShift 15s ease infinite;
            opacity: 1;
            transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            z-index: 1000;
            overflow: hidden;
        }

        @keyframes gradientShift {
            0%, 100% {
                background-position: 0% 50%;
            }
            50% {
                background-position: 100% 50%;
            }
        }

        .home-page.hidden {
            opacity: 0;
            pointer-events: none;
            transform: scale(1.05);
        }

        .home-title {
            font-size: clamp(36px, 5vw, 56px);
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: -0.04em;
            text-align: center;
            animation: fadeInUp 1s ease-out;
            background: linear-gradient(180deg, #ffffff 0%, #a8a8a8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 4px 20px rgba(255, 255, 255, 0.1);
        }

        .home-subtitle {
            font-size: clamp(14px, 2vw, 18px);
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 20px;
            text-align: center;
            font-weight: 400;
            animation: fadeInUp 1s ease-out 0.2s backwards;
            letter-spacing: 0.01em;
        }

        .home-visualization {
            width: 100%;
            height: 100%;
            overflow: hidden;
            position: relative;
            z-index: 1; /* 确保在背景之上 */
        }

        /* 中央毛玻璃分析入口 */
        .center-card {
            position: fixed;
            top: 50%;
            left: 50%;
            /* 强制硬件加速，确保 transform 立即应用，避免位置闪烁 */
            /* 使用 !important 确保 transform 不被其他样式覆盖 */
            transform: translate(-50%, -50%) translateZ(0) !important;
            -webkit-transform: translate(-50%, -50%) translateZ(0) !important;
            z-index: 100;
            background: rgba(15, 30, 60, 0.03);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(100, 150, 255, 0.1);
            border-radius: 24px;
            padding: 50px 60px;
            box-shadow:
                0 0 0 1px rgba(100, 150, 255, 0.05),
                0 30px 80px rgba(0, 0, 0, 0.1),
                inset 0 1px 0 rgba(255, 255, 255, 0.05);
            /* 初始状态：透明但位置已居中 */
            opacity: 0;
            animation: fadeIn 1s ease-out 0.3s forwards;
            pointer-events: none; /* 允许背景图显示在中间 */
            will-change: transform, opacity;
            /* 确保 transform 立即应用，避免位置闪烁 */
            backface-visibility: hidden;
            -webkit-font-smoothing: antialiased;
        }

        .center-card .card-content {
            pointer-events: auto; /* 内容区域可以交互 */
        }

        .card-content {
            text-align: center;
        }

        .center-title {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            background: linear-gradient(180deg, #ffffff 0%, rgba(255, 255, 255, 0.8) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .center-subtitle {
            font-size: clamp(14px, 2vw, 18px);
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
            font-weight: 400;
            letter-spacing: 0.01em;
        }

        .center-button {
            background: linear-gradient(180deg, var(--color-blue-primary) 0%, var(--color-cyan) 100%);
            backdrop-filter: blur(20px);
            color: white;
            border: 1px solid var(--color-cyan-light);
            padding: 16px 48px;
            border-radius: 980px;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            letter-spacing: -0.01em;
            box-shadow:
                0 4px 20px var(--glow-blue),
                0 1px 3px rgba(0, 0, 0, 0.3);
        }

        .center-button:hover {
            background: linear-gradient(180deg, var(--color-blue-secondary) 0%, var(--color-cyan-light) 100%);
            transform: translateY(-2px) scale(1.05);
            box-shadow:
                0 8px 30px var(--glow-blue),
                0 0 20px var(--glow-cyan);
        }

        .center-button:active {
            transform: translateY(-1px) scale(1.02);
        }


        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* 仅用于center-card的淡入动画，不改变位置 */
        @keyframes fadeIn {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }


        /* 主应用页面样式 */
        .app-page {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            z-index: 1;
            transform: translateY(20px);
            overflow: auto;
        }

        .app-page.active {
            opacity: 1;
            transform: translateY(0);
            z-index: 10;
        }

.app-page .container {
            max-width: 1500px;
            margin: 0 auto;
            padding: 16px;
        }

.app-page .header {
            background: #243866;
            color: #ffffff;
            padding: 40px 60px 30px;
            text-align: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.05);
        }

.app-page .header h1 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
            background: none;
            -webkit-text-fill-color: initial;
            color: #ffffff;
        }

.app-page .header p {
            opacity: 0.8;
            font-size: 16px;
            font-weight: 400;
            margin: 0;
            color: rgba(255, 255, 255, 0.7);
        }

.app-page .controls {
        }

.app-page .form-group {
            margin-bottom: 20px;
        }

.app-page .form-group label {
            display: block;
            font-weight: 600;
            color: var(--color-gray-900);
            margin-bottom: 8px;
            font-size: 15px;
            letter-spacing: -0.01em;
        }

.app-page .form-group input {
            width: 100%;
            padding: 14px 18px;
            border: 1px solid var(--color-gray-200);
            border-radius: 10px;
            font-size: 15px;
            transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            background: var(--color-gray-50);
            color: var(--color-gray-900);
        }

.app-page .form-group input:focus {
            outline: none;
            border-color: var(--color-blue-primary);
            background: white;
            box-shadow:
                0 0 0 4px rgba(0, 102, 255, 0.1),
                0 4px 12px var(--shadow-medium);
        }

.app-page .form-group input::placeholder {
            color: var(--color-gray-500);
        }

        /* 自动完成下拉提示样式 */
        .autocomplete-wrapper {
            position: relative;
            width: 100%;
        }

        .autocomplete-suggestions {
            position: absolute;
            top: calc(100% + 4px);
            left: 0;
            right: 0;
            background: white;
            border: 1px solid var(--color-gray-200);
            border-radius: 10px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
            max-height: 300px;
            overflow-y: auto;
            z-index: 1000;
            display: none;
            animation: fadeIn 0.15s ease-out;
        }

        .autocomplete-suggestions.visible {
            display: block;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-4px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .autocomplete-item {
            padding: 12px 16px;
            cursor: pointer;
            border-bottom: 1px solid var(--color-gray-100);
            transition: background-color 0.15s ease;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .autocomplete-item:last-child {
            border-bottom: none;
        }

        .autocomplete-item:hover,
        .autocomplete-item.active {
            background: linear-gradient(180deg, rgba(0, 102, 255, 0.08) 0%, rgba(0, 102, 255, 0.04) 100%);
        }

        .autocomplete-item-name {
            font-weight: 500;
            color: var(--color-gray-900);
            flex: 1;
        }

        .autocomplete-item-year {
            font-size: 12px;
            color: var(--color-gray-600);
            background: var(--color-gray-100);
            padding: 4px 8px;
            border-radius: 6px;
        }

        .autocomplete-item-categories {
            font-size: 12px;
            color: var(--color-blue-primary);
            font-weight: 500;
        }

        .form-row {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 20px;
        }

.app-page .btn {
            background: linear-gradient(180deg, var(--color-blue-secondary) 0%, var(--color-blue-primary) 100%);
            color: white;
            border: none;
            padding: 14px 36px;
            border-radius: 980px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            width: 100%;
            box-shadow: 0 4px 14px rgba(51, 133, 255, 0.3), 0 1px 3px rgba(0, 0, 0, 0.1);
            letter-spacing: -0.01em;
        }

.app-page .btn:hover {
            background: linear-gradient(180deg, var(--color-blue-light) 0%, var(--color-blue-secondary) 100%);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(51, 133, 255, 0.4), 0 2px 8px rgba(0, 0, 0, 0.12);
        }

.app-page .btn:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(0, 122, 255, 0.25), 0 1px 4px rgba(0, 0, 0, 0.1);
        }

        .info {
            padding: 16px 20px;
            background: linear-gradient(135deg, rgba(0, 113, 227, 0.06) 0%, rgba(0, 113, 227, 0.03) 100%);
            border: 1px solid rgba(0, 113, 227, 0.15);
            margin-bottom: 20px;
            border-radius: 10px;
            font-size: 14px;
            color: #1d1d1f;
            font-weight: 500;
            line-height: 1.5;
        }

        .svg-container {
            padding: 32px;
            overflow: auto;
            background: linear-gradient(180deg, #ffffff 0%, #fafafa 100%);
            position: relative;
            min-height: 600px;
        }

        .svg-container .zoom-controls {
            position: absolute !important;
            top: 20px !important;
            right: 20px !important;
            left: auto !important;
            bottom: auto !important;
            background: rgba(255, 255, 255, 0.95);
            padding: 12px;
            border-radius: 16px;
            box-shadow:
                0 0 0 1px rgba(0, 0, 0, 0.06),
                0 8px 24px rgba(0, 0, 0, 0.12);
            z-index: 100;
            display: flex;
            flex-direction: column;
            gap: 8px;
            backdrop-filter: blur(20px);
            margin: 0;
        }

        .zoom-btn {
            background: #f5f5f7;
            color: #1d1d1f;
            border: none;
            padding: 10px 14px;
            border-radius: 10px;
            font-size: 20px;
            cursor: pointer;
            transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            min-width: 44px;
            font-weight: 600;
        }

        .zoom-btn:hover {
            background: #0071e3;
            color: white;
            transform: scale(1.05);
        }

        .zoom-btn:active {
            transform: scale(0.98);
        }

        .zoom-btn:disabled {
            background: #f5f5f7;
            color: #ccc;
            cursor: not-allowed;
        }

        .node circle {
            stroke: #fff;
            stroke-width: 3px;
            transition: all 0.3s;
        }

        .node circle:hover {
            stroke-width: 4px;
            filter: brightness(1.1);
        }

        .node text {
            font-size: 12px;
            pointer-events: none;
            text-shadow: 0 1px 3px rgba(255, 255, 255, 0.8);
            font-weight: 500;
        }

        .link {
            fill: none;
            stroke: var(--color-gray-300);
            stroke-width: 2px;
            stroke-opacity: 0.7;
        }

        .node-label {
            font-size: 11px;
            fill: var(--color-gray-600);
            text-anchor: middle;
        }

        /* 新增节点样式增强 */
        .node text {
            font-size: 12px;
            pointer-events: none;
            text-shadow: 0 1px 3px rgba(255, 255, 255, 0.9);
            font-weight: 500;
        }

        .node circle {
            stroke: var(--color-white, #fff);
            stroke-width: 3px;
            transition: all 0.3s ease;
        }

        .node circle:hover {
            stroke-width: 4px;
            filter: brightness(1.1);
        }

        /* 弹窗样式 */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            z-index: 10000;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity 0.3s ease;
            pointer-events: none;
        }

        .modal-overlay.show {
            opacity: 1;
            pointer-events: auto;
        }

        .modal {
            background: white;
            border-radius: 16px;
            padding: 0;
            max-width: 500px;
            width: 90%;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            transform: scale(0.9) translateY(20px);
            transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            overflow: hidden;
        }

        .modal-overlay.show .modal {
            transform: scale(1) translateY(0);
        }

        .modal-header {
            padding: 24px 24px 16px;
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .modal-icon {
            font-size: 28px;
            line-height: 1;
        }

        .modal-title {
            font-size: 20px;
            font-weight: 600;
            color: #1d1d1f;
            margin: 0;
        }

        .modal-body {
            padding: 20px 24px;
            color: #48484a;
            line-height: 1.6;
        }

        .modal-body .duplicate-list {
            margin: 12px 0;
            padding: 12px;
            background: rgba(255, 149, 0, 0.08);
            border-radius: 8px;
            border-left: 3px solid #ff9500;
        }

        .modal-body .duplicate-item {
            padding: 6px 0;
            font-weight: 500;
            color: #ff9500;
        }

        .modal-footer {
            padding: 16px 24px 24px;
            display: flex;
            justify-content: flex-end;
            gap: 12px;
        }

        .modal-button {
            padding: 10px 24px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: all 0.2s ease;
        }

        .modal-button-primary {
            background: linear-gradient(180deg, var(--color-blue-primary) 0%, var(--color-blue-secondary) 100%);
            color: white;
            box-shadow: 0 2px 8px rgba(0, 102, 255, 0.3);
        }

        .modal-button-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(0, 102, 255, 0.4);
        }

        .modal-button-primary:active {
            transform: translateY(0);
        }

        .error {
            padding: 16px 20px;
            background: linear-gradient(135deg, rgba(255, 59, 48, 0.06) 0%, rgba(255, 59, 48, 0.03) 100%);
            border: 1px solid rgba(255, 59, 48, 0.2);
            margin: 20px 32px;
            border-radius: 10px;
            color: #ff3b30;
            font-size: 14px;
            font-weight: 500;
            line-height: 1.5;
        }

        .loading {
            text-align: center;
            padding: 40px 60px;
            color: #86868b;
            font-size: 15px;
            font-weight: 500;
        }

        .tooltip {
            position: absolute;
            background: rgba(0, 0, 0, 0.9);
            color: white;
            padding: 14px 18px;
            border-radius: 12px;
            font-size: 14px;
            pointer-events: none;
            z-index: 1000;
            max-width: 400px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
            font-weight: 500;
            line-height: 1.4;
        }

        .stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 16px;
            margin-top: 20px;
            margin-bottom: 16px;
        }

        .stat-card {
            background: white;
            padding: 20px 24px;
            border-radius: 14px;
            text-align: center;
            box-shadow:
                0 0 0 1px rgba(0, 0, 0, 0.04),
                0 6px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow:
                0 0 0 1px rgba(0, 113, 227, 0.1),
                0 10px 30px rgba(0, 113, 227, 0.15);
        }

        .stat-value {
            font-size: 28px;
            font-weight: 700;
            color: #0066ff;
            margin-bottom: 6px;
            letter-spacing: -0.02em;
        }

        .stat-label {
            font-size: 13px;
            color: #86868b;
            font-weight: 500;
            margin: 0;
        }

        .dataset-card {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: white;
            border-radius: 20px;
            box-shadow:
                0 0 0 1px rgba(0, 0, 0, 0.04),
                0 40px 80px rgba(0, 0, 0, 0.25);
            padding: 40px;
            max-width: 700px;
            width: 90%;
            max-height: 85vh;
            overflow-y: auto;
            z-index: 1000;
            visibility: hidden;
            opacity: 0;
            pointer-events: none;
            will-change: transform, opacity;
            transition: opacity 0.2s ease, visibility 0.2s ease;
        }
        
        .dataset-card.show {
            visibility: visible;
            opacity: 1;
            pointer-events: auto;
        }

        .dataset-card-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 28px;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
        }

        .dataset-card h2 {
            font-size: 24px;
            color: #1d1d1f;
            margin: 0;
            flex: 1;
            font-weight: 700;
            letter-spacing: -0.02em;
        }

        .close-btn {
            background: #f5f5f7;
            border: none;
            border-radius: 50%;
            width: 36px;
            height: 36px;
            font-size: 20px;
            cursor: pointer;
            color: #86868b;
            transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        .close-btn:hover {
            background: #ff3b30;
            color: white;
            transform: scale(1.1);
        }

        .dataset-info {
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

        .dataset-info div {
            word-wrap: break-word;
        }

        .source-item {
            margin-bottom: 12px;
            padding: 16px;
            background: #f5f5f7;
            border-radius: 12px;
            border: 1px solid rgba(0, 0, 0, 0.06);
            transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        .source-item:hover {
            background: #f0f0f3;
            border-color: rgba(0, 113, 227, 0.2);
        }

        .source-name {
            font-weight: 600;
            color: #1d1d1f;
            margin-bottom: 8px;
            font-size: 15px;
        }

        .source-meta {
            display: flex;
            gap: 12px;
            font-size: 13px;
            color: #86868b;
            flex-wrap: wrap;
        }

        .meta-tag {
            padding: 6px 12px;
            border-radius: 8px;
            font-weight: 500;
        }

        .meta-tag-relationship {
            background: rgba(0, 113, 227, 0.08);
            color: #0071e3;
        }

        .meta-tag-confidence {
            background: rgba(88, 86, 214, 0.08);
            color: #5856d6;
        }

        .info-label {
            font-weight: 600;
            color: #86868b;
            font-size: 15px;
        }

        .legend {
            position: absolute;
            top: 20px;
            left: 20px;
            background: rgba(255, 255, 255, 0.95);
            padding: 20px;
            border-radius: 16px;
            box-shadow:
                0 0 0 1px rgba(0, 0, 0, 0.06),
                0 8px 24px rgba(0, 0, 0, 0.12);
            font-size: 14px;
            z-index: 100;
            max-width: 320px;
            backdrop-filter: blur(20px);
        }

        .legend-item {
            display: flex;
            align-items: center;
            margin-bottom: 12px;
        }

        .legend-item:last-child {
            margin-bottom: 0;
        }

        .legend-color {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            margin-right: 10px;
            flex-shrink: 0;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        }

        .legend-multi {
            width: 18px;
            height: 18px;
            margin-right: 10px;
            flex-shrink: 0;
            border-radius: 50%;
        }

        /* 数据源信息面板 */
        .source-info-panel {
            position: absolute;
            top: auto;
            left: 20px;
            background: rgba(255, 255, 255, 0.95);
            padding: 20px;
            border-radius: 16px;
            box-shadow:
                0 0 0 1px rgba(0, 0, 0, 0.06),
                0 8px 24px rgba(0, 0, 0, 0.12);
            font-size: 14px;
            z-index: 100;
            max-width: 320px;
            max-height: calc(100vh - 200px);
            backdrop-filter: blur(20px);
            margin-top: 12px;
            animation: slideInFromLeft 0.4s ease-out;
            overflow-y: auto;
        }
        
        .source-info-panel::-webkit-scrollbar {
            width: 6px;
        }
        
        .source-info-panel::-webkit-scrollbar-track {
            background: rgba(0, 0, 0, 0.04);
            border-radius: 3px;
        }
        
        .source-info-panel::-webkit-scrollbar-thumb {
            background: rgba(0, 0, 0, 0.2);
            border-radius: 3px;
        }
        
        .source-info-panel::-webkit-scrollbar-thumb:hover {
            background: rgba(0, 0, 0, 0.3);
        }

        .source-info-panel.hidden {
            display: none;
        }

        .source-info-header {
            font-weight: 600;
            margin-bottom: 16px;
            color: #1d1d1f;
            font-size: 15px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .source-info-header::before {
            content: '📊';
            font-size: 18px;
        }

        .source-info-section {
            margin-bottom: 16px;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
        }

        .source-info-section:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .source-info-title {
            font-weight: 600;
            color: #1d1d1f;
            font-size: 13px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .source-info-title::before {
            content: '';
            width: 4px;
            height: 16px;
            background: linear-gradient(180deg, var(--color-blue-primary) 0%, var(--color-cyan) 100%);
            border-radius: 2px;
        }

        .source-info-content {
            color: #48484a;
            font-size: 13px;
            line-height: 1.6;
        }

        .source-info-stat {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 8px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
        }

        .source-info-stat:last-child {
            border-bottom: none;
        }

        .source-info-stat-label {
            color: #636366;
            font-size: 12px;
            font-weight: 500;
        }

        .source-info-stat-value {
            color: #1d1d1f;
            font-size: 14px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .source-info-badge {
            display: inline-block;
            padding: 4px 10px;
            background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, rgba(0, 212, 255, 0.1) 100%);
            border: 1px solid rgba(0, 102, 255, 0.2);
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-blue-primary);
            margin: 4px 4px 4px 0;
        }

        .source-info-list {
            max-height: 150px;
            overflow-y: auto;
            padding-right: 4px;
        }

        .source-info-list::-webkit-scrollbar {
            width: 4px;
        }

        .source-info-list::-webkit-scrollbar-track {
            background: rgba(0, 0, 0, 0.04);
            border-radius: 2px;
        }

        .source-info-list::-webkit-scrollbar-thumb {
            background: rgba(0, 0, 0, 0.2);
            border-radius: 2px;
        }

        .source-info-list::-webkit-scrollbar-thumb:hover {
            background: rgba(0, 0, 0, 0.3);
        }

        .source-info-item {
            padding: 6px 8px;
            margin: 4px 0;
            background: rgba(0, 0, 0, 0.02);
            border-radius: 6px;
            font-size: 12px;
            color: #48484a;
            word-break: break-word;
            transition: all 0.2s ease;
        }

        .source-info-item:hover {
            background: rgba(0, 102, 255, 0.08);
            color: var(--color-blue-primary);
            transform: translateX(2px);
        }

        .loading-spinner {
            display: inline-block;
            width: 14px;
            height: 14px;
            border: 2px solid rgba(0, 122, 255, 0.2);
            border-top-color: #007aff;
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
            vertical-align: middle;
            margin-right: 6px;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        .source-info-empty {
            text-align: center;
            padding: 20px;
            color: #86868b;
            font-size: 13px;
            font-style: italic;
        }

        .info-value {
            color: #1d1d1f;
            font-weight: 500;
        }

        .categories {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .category-tag {
            background: linear-gradient(135deg, #0071e3 0%, #147ce5 100%);
            color: white;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(0, 113, 227, 0.25);
        }

        .card-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            visibility: hidden;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.2s ease, visibility 0.2s ease;
        }
        
        .card-overlay.show {
            visibility: visible;
            opacity: 1;
            pointer-events: auto;
        }

        .target-input-group {
            display: flex;
            gap: 12px;
            margin-bottom: 12px;
            align-items: center; /* 确保按钮和输入框垂直居中对齐 */
        }

        .target-input {
            flex: 1;
            padding: 16px 20px;
            border: 1px solid rgba(0, 0, 0, 0.1);
            border-radius: 12px;
            font-size: 17px;
            transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            background: #f5f5f7;
        }

        .target-input:focus {
            outline: none;
            border-color: #0071e3;
            background: white;
            box-shadow:
                0 0 0 4px rgba(0, 113, 227, 0.1),
                0 4px 12px rgba(0, 0, 0, 0.08);
        }

        .add-target-btn,
        .remove-target-btn {
            width: 48px;
            height: 48px;
            border: none;
            border-radius: 12px;
            font-size: 24px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0; /* 防止按钮被压缩 */
        }

        .add-target-btn {
            background: linear-gradient(135deg, #34c759 0%, #30d158 100%);
            color: white;
            box-shadow: 0 4px 12px rgba(52, 199, 89, 0.3);
        }

        .add-target-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 6px 16px rgba(52, 199, 89, 0.4);
        }

        .add-target-btn:active {
            transform: scale(0.98);
        }

        .remove-target-btn {
            background: rgba(255, 59, 48, 0.1);
            color: #ff3b30;
        }

        .remove-target-btn:hover {
            background: #ff3b30;
            color: white;
            transform: scale(1.05);
        }

        .remove-target-btn:active {
            transform: scale(0.98);
        }

        .target-controls {
            margin-top: 24px;
            padding: 24px;
            background: #f5f5f7;
            border-radius: 16px;
            border: 1px solid rgba(0, 0, 0, 0.06);
            display: none;
        }

        .target-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 12px;
        }

        .target-tag {
            background: linear-gradient(135deg, #0071e3 0%, #147ce5 100%);
            color: white;
            padding: 10px 18px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 4px 12px rgba(0, 113, 227, 0.25);
            transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        .target-tag:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(0, 113, 227, 0.35);
        }

        .target-tag input[type="checkbox"] {
            margin: 0;
            width: 18px;
            height: 18px;
            cursor: pointer;
        }

        .target-tag label {
            margin: 0;
            cursor: pointer;
            letter-spacing: -0.01em;
        }

        /* 增强动画效果 */
        @keyframes slideInFromRight {
            from {
                opacity: 0;
                transform: translateX(30px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        @keyframes slideInFromLeft {
            from {
                opacity: 0;
                transform: translateX(-30px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        @keyframes scaleIn {
            from {
                opacity: 0;
                transform: scale(0.9);
            }
            to {
                opacity: 1;
                transform: scale(1);
            }
        }

        @keyframes pulse {
            0%, 100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.8;
                transform: scale(1.05);
            }
        }

        @keyframes shimmer {
            0% {
                background-position: -1000px 0;
            }
            100% {
                background-position: 1000px 0;
            }
        }

        /* 节点动画增强 */
        .node {
            transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            cursor: pointer;
        }

        .node circle {
            transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
        }

        .node:hover circle {
            transform: scale(1.15);
            filter: drop-shadow(0 4px 12px rgba(0, 102, 255, 0.4));
            stroke-width: 4px;
        }

        .node text {
            transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        .node:hover text {
            font-weight: 700;
            font-size: 13px;
        }

        .link {
            transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        .link:hover {
            stroke-width: 3px;
            stroke-opacity: 1;
            filter: drop-shadow(0 0 2px rgba(0, 102, 255, 0.3));
        }

        /* 按钮加载动画 */
.app-page .btn.loading {
            position: relative;
            color: transparent;
            pointer-events: none;
        }

.app-page .btn.loading::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            top: 50%;
            left: 50%;
            margin-left: -10px;
            margin-top: -10px;
            border: 3px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            border-top-color: white;
            animation: spin 0.8s linear infinite;
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        /* 卡片进入动画 */
        .dataset-card {
            animation: scaleIn 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        .card-overlay {
            transition: opacity 0.3s ease;
        }

        /* 统计卡片动画 */
        .stat-card {
            animation: slideInFromRight 0.5s ease-out backwards;
        }

        .stat-card:nth-child(1) { animation-delay: 0.1s; }
        .stat-card:nth-child(2) { animation-delay: 0.2s; }
        .stat-card:nth-child(3) { animation-delay: 0.3s; }
        .stat-card:nth-child(4) { animation-delay: 0.4s; }

        /* 输入框焦点动画 */
.app-page .form-group input:focus {
            animation: inputFocus 0.3s ease-out;
        }

        @keyframes inputFocus {
            0% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.02);
            }
            100% {
                transform: scale(1);
            }
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
.app-page .container {
                margin: 20px 10px;
                border-radius: 16px;
            }

.app-page .header {
                padding: 30px 20px 20px;
            }

.app-page .header h1 {
                font-size: 24px;
            }

.app-page .header p {
                font-size: 14px;
            }

.app-page .controls {
            }

            .form-row {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .center-card {
                padding: 30px 24px;
                margin: 0 20px;
                width: calc(100% - 40px);
                left: 50%;
                top: 50%;
                transform: translate(-50%, -50%) translateZ(0) !important;
                -webkit-transform: translate(-50%, -50%) translateZ(0) !important;
            }

            .center-title {
                font-size: 28px;
            }

            .center-subtitle {
                font-size: 14px;
            }

            .center-button {
                padding: 14px 36px;
                font-size: 16px;
            }

            .svg-container {
                padding: 20px 10px;
                min-height: 400px;
            }

            .svg-container .zoom-controls {
                top: 10px !important;
                right: 10px !important;
                left: auto !important;
                bottom: auto !important;
                padding: 8px;
                gap: 6px;
            }

            .zoom-btn {
                padding: 8px 12px;
                font-size: 18px;
                min-width: 40px;
            }

            .legend {
                max-width: 280px;
                padding: 16px;
                font-size: 13px;
            }

            .source-info-panel {
                max-width: 280px;
                padding: 16px;
                left: 20px;
                font-size: 13px;
            }

            .dataset-card {
                width: 95%;
                padding: 24px;
                max-height: 90vh;
            }

            .modal {
                width: 95%;
                margin: 20px;
            }

            .target-controls {
                padding: 16px;
            }

            .target-list {
                gap: 8px;
            }

            .target-tag {
                padding: 8px 14px;
                font-size: 13px;
            }

            .info {
                padding: 12px 16px;
                font-size: 13px;
            }

            .stats {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .stat-card {
                padding: 16px 20px;
            }

            .stat-value {
                font-size: 24px;
            }
        }

        @media (max-width: 480px) {
            .home-title {
                font-size: 32px;
            }

            .center-card {
                padding: 24px 20px;
            }

            .center-title {
                font-size: 24px;
            }

            .center-button {
                padding: 12px 28px;
                font-size: 15px;
                width: 100%;
            }

.app-page .header h1 {
                font-size: 20px;
            }

.app-page .btn {
                padding: 12px 24px;
                font-size: 14px;
            }

.app-page .form-group input {
                padding: 12px 16px;
                font-size: 14px;
            }

            .node text {
                font-size: 10px;
            }

            .node:hover text {
                font-size: 11px;
            }

            .legend {
                max-width: calc(100% - 40px);
                padding: 12px;
                font-size: 12px;
            }

            .source-info-panel {
                max-width: calc(100% - 40px);
                padding: 12px;
                left: 20px;
                font-size: 12px;
            }

            .source-info-header {
                font-size: 14px;
            }

            .source-info-title {
                font-size: 12px;
            }

            .source-info-content {
                font-size: 12px;
            }
        }

        @media (min-width: 769px) and (max-width: 1024px) {
.app-page .container {
                margin: 30px 20px;
            }

.app-page .controls {
            }

            .form-row {
                grid-template-columns: 1.5fr 1fr;
            }
        }

        /* 平滑滚动 */
        html {
            scroll-behavior: smooth;
        }

        /* 加载状态优化 */
        .loading {
            animation: pulse 1.5s ease-in-out infinite;
        }

        /* 工具提示动画 */
        .tooltip {
            animation: fadeIn 0.2s ease-out;
        }

        /* 自动完成下拉动画增强 */
        .autocomplete-suggestions {
            animation: slideInFromLeft 0.2s ease-out;
        }

        /* 模态框动画增强 */
        .modal-overlay.show {
            animation: fadeIn 0.3s ease-out;
        }

        .modal-overlay.show .modal {
            animation: scaleIn 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        /* 触摸设备优化 */
        @media (hover: none) and (pointer: coarse) {
            .node:hover circle,
            .node:hover text {
                transform: none;
            }

.app-page .btn:hover,
            .zoom-btn:hover {
                transform: none;
            }

.app-page .btn:active,
            .zoom-btn:active {
                transform: scale(0.95);
            }
        }

        /* 高对比度模式支持 */
        @media (prefers-contrast: high) {
            .node circle {
                stroke-width: 4px;
            }

            .link {
                stroke-width: 3px;
                stroke-opacity: 1;
            }
        }

        /* 减少动画模式支持 */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }

        /* 语言切换按钮样式 */
        .lang-switch-btn {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 10000;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 20px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            letter-spacing: 0.02em;
        }

        .app-page .lang-switch-btn {
            background: rgba(0, 0, 0, 0.04);
            border: 1px solid rgba(0, 0, 0, 0.08);
            color: rgba(0, 0, 0, 0.7);
        }

        .lang-switch-btn:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }

        .app-page .lang-switch-btn:hover {
            background: rgba(0, 0, 0, 0.08);
            border-color: rgba(0, 0, 0, 0.15);
        }

        .lang-switch-btn:active {
            transform: translateY(0);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
        }

        /* Dataset Card Styles - Ensure Font Awesome icons display correctly */
        /* Override .dataset-header * font-family rule with higher specificity */
        /* Target all i elements within dataset-header that have Font Awesome classes */
        .dataset-header.comparison-card i[class*="fa-"],
        .dataset-header.comparison-card i[class*="fas"],
        .dataset-header.comparison-card i[class*="far"],
        .dataset-header.comparison-card i[class*="fab"],
        .dataset-header.comparison-card .external-link i,
        .dataset-header.comparison-card .dataset-affiliation i,
        .dataset-header.comparison-card .tag-badge i,
        .dataset-header.comparison-card .comparison-card-header i,
        .dataset-header.comparison-card .comparison-card-body i {
            font-family: "Font Awesome 6 Free" !important;
            font-weight: 900 !important;
            display: inline-block !important;
            font-style: normal !important;
            font-variant: normal !important;
            text-transform: none !important;
            line-height: 1 !important;
            vertical-align: middle !important;
            -webkit-font-smoothing: antialiased !important;
            -moz-osx-font-smoothing: grayscale !important;
            speak: none;
        }

        /* Ensure Font Awesome pseudo-elements are visible */
        .dataset-header.comparison-card i[class*="fa-"]::before,
        .dataset-header.comparison-card i[class*="fas"]::before,
        .dataset-header.comparison-card i[class*="far"]::before,
        .dataset-header.comparison-card i[class*="fab"]::before,
        .dataset-header.comparison-card .external-link i::before,
        .dataset-header.comparison-card .dataset-affiliation i::before,
        .dataset-header.comparison-card .tag-badge i::before,
        .dataset-header.comparison-card .comparison-card-header i::before,
        .dataset-header.comparison-card .comparison-card-body i::before {
            font-family: "Font Awesome 6 Free" !important;
            font-weight: 900 !important;
            display: inline-block !important;
        }

        .dataset-header.comparison-card .external-link i {
            margin-right: 6px;
        }

        .dataset-header.comparison-card .tag-badge i {
            margin-right: 4px;
        }

        .dataset-header.comparison-card .dataset-affiliation i {
            margin-right: 6px;
        }

        /* Ensure chevron icons are visible */
        .dataset-header.comparison-card .comparison-card-header i.fa-chevron-up,
        .dataset-header.comparison-card .comparison-card-header i.fa-chevron-down {
            font-family: "Font Awesome 6 Free" !important;
            font-weight: 900 !important;
            display: inline-block !important;
        }
    </style>