* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            /* Main Color Palette - Professional Data Consulting Style */
            --primary-blue: #2C3E50;
            --accent-red: #E74C3C;
            --light-blue: #ECF0F1;
            --medium-gray: #7F8C8D;
            --white: #FFFFFF;
            --dark-gray: #34495E;
            --highlight-orange: #F39C12;
            
            /* Logo Colors */
            --logo-blue: #445A66;
            --logo-red: #D7553D;
            --logo-red-dark: #C73F14;
            
            /* Fonts */
            --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --font-mono: 'Courier New', monospace;
        }

        body {
            font-family: var(--font-primary);
            line-height: 1.6;
            color: var(--dark-gray);
            background-color: var(--white);
        }

        /* Navbar */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(44, 62, 80, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            padding: 1rem 0;
            transition: all 0.3s ease;
            border-bottom: 2px solid var(--accent-red);
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 2rem;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .logo svg {
            height: 40px;
            width: auto;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        
        .nav-menu .active {
            color: var(--accent-red);
            border-bottom: 2px solid var(--accent-red);
        }

        .nav-menu a {
            color: var(--white);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
        }

        .nav-menu a:hover {
            color: var(--accent-red);
        }

        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-red);
            transition: width 0.3s ease;
        }

        .nav-menu a:hover::after {
            width: 100%;
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-gray) 100%);
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
            opacity: 0.3;
        }

        .hero-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content h1 {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--white);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }

        .hero-content .highlight {
            color: var(--accent-red);
        }
		
		p .highlight {
            color: var(--accent-red);
        }

        .hero-content p {
            font-size: 1.25rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 2rem;
        }

        .cta-buttons {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn {
            padding: 1rem 2rem;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            text-align: center;
        }

        .btn-primary {
            background: var(--accent-red);
            color: var(--white);
            box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
        }

        .btn-primary:hover {
            background: var(--highlight-orange);
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(243, 156, 18, 0.4);
        }

        .btn-secondary {
            background: transparent;
            color: var(--white);
            border: 2px solid var(--white);
        }

        .btn-secondary:hover {
            background: var(--white);
            color: var(--primary-blue);
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .data-visualization {
            width: 100%;
            max-width: 600px;
            height: 400px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            position: relative;
        }

        .chart-placeholder {
            width: 80%;
            height: 60%;
            background: linear-gradient(45deg, var(--accent-red), var(--highlight-orange));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 1.2rem;
            font-weight: 600;
            position: relative;
            overflow: hidden;
        }

        .chart-placeholder::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: repeating-linear-gradient(
                45deg,
                transparent,
                transparent 10px,
                rgba(255, 255, 255, 0.1) 10px,
                rgba(255, 255, 255, 0.1) 20px
            );
        }

        /* Features Section */
        .features {
            padding: 6rem 0;
            background: var(--light-blue);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .section-title {
            text-align: center;
            margin-bottom: 1.5rem;
        }

        .section-title h2 {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 1rem;
        }

        .section-title p {
            font-size: 1.2rem;
            color: var(--medium-gray);
            /* max-width: 600px; */
            text-align:left;
            margin: 0 auto;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .feature-card {
            background: var(--white);
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(44, 62, 80, 0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            text-align: center;
            border-top: 4px solid var(--accent-red);
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(44, 62, 80, 0.15);
        }

        .feature-icon {
            /*width: 200px;
            height: 200px;*/
            margin: 0 auto 1.5rem;
            /*background: linear-gradient(135deg, var(--accent-red), var(--highlight-orange));*/
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--white);
        }

        .feature-card h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--primary-blue);
            margin-bottom: 1rem;
        }

        .feature-card p {
            color: var(--medium-gray);
            line-height: 1.6;
            text-align:left;
        }

        /* Data Showcase Section */
        .data-showcase {
            padding: 6rem 0;
            background: var(--white);
        }

        .showcase-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .showcase-content h3 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
        }

        .showcase-content p {
            color: var(--medium-gray);
            margin-bottom: 2rem;
            font-size: 1.1rem;
        }

        .stats-list {
            list-style: none;
        }

        .stats-list li {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;
            font-weight: 500;
            color: var(--dark-gray);
        }

        .stats-list li::before {
            content: '✓';
            color: var(--accent-red);
            font-weight: bold;
            margin-right: 1rem;
            font-size: 1.2rem;
        }

        .showcase-visual {
            background: linear-gradient(135deg, var(--light-blue), rgba(231, 76, 60, 0.1));
            border-radius: 15px;
            padding: 2rem;
            height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .chart-container {
            width: 100%;
            height: 100%;
            background: var(--white);
            border-radius: 10px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: var(--medium-gray);
            font-size: 1.1rem;
            position: relative;
            overflow: hidden;
        }

        .chart-container::before {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            background: linear-gradient(45deg, var(--accent-red), var(--highlight-orange));
            border-radius: 50%;
            opacity: 0.1;
            animation: rotate 20s linear infinite;
        }

        @keyframes rotate {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        /* Contact Us Section */
        .contact {
            padding: 6rem 0;
            background: linear-gradient(135deg, var(--primary-blue), var(--dark-gray));
            color: var(--white);
        }

        .contact-container {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }

        .contact h2 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
        }

        .contact p {
            font-size: 1.2rem;
            margin-bottom: 3rem;
            opacity: 0.9;
            text-align:left;
        }

        .contact-form {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .form-group {
            display: flex;
            flex-direction: column;
        }

        .form-group.full-width {
            grid-column: 1 / -1;
        }

        .form-group label {
            margin-bottom: 0.5rem;
            font-weight: 500;
            color: var(--accent-red);
        }

        .form-group input,
        .form-group textarea {
            padding: 1rem;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            background: rgba(255, 255, 255, 0.1);
            color: var(--white);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: border-color 0.3s ease;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--accent-red);
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: rgba(255, 255, 255, 0.7);
            font-family: var(--font-primary);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 120px;
        }

        /* Footer */
        .footer {
            background: var(--dark-gray);
            color: var(--white);
            padding: 3rem 0 1rem;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-section h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--accent-red);
        }

        .footer-section p,
        .footer-section a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            line-height: 1.6;
            transition: color 0.3s ease;
        }

        .footer-section a:hover {
            color: var(--accent-red);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2rem;
            text-align: center;
            color: rgba(255, 255, 255, 0.6);
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }

            .hero-container {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .hero-content h1 {
                font-size: 2.5rem;
            }

            .showcase-grid {
                grid-template-columns: 1fr;
            }

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

            .cta-buttons {
                justify-content: center;
            }
        }

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

        .fade-in-up {
            animation: fadeInUp 0.8s ease-out;
        }

        /* Smooth Scrolling */
        html {
            scroll-behavior: smooth;
        }

        /* Custom Scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--light-blue);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--accent-red);
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary-blue);
        }

        /* Logo Styling */
        .hero-logo {
            text-align: center;
            margin-bottom: 3rem;
        }

        .hero-logo svg {
            height: 100px;
            width: auto;
            filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
        }

        /* Professional styling enhancements */
        .section-divider {
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-red), transparent);
            margin: 2rem auto;
            width: 100px;
        }

        .professional-accent {
            position: relative;
            font-size: 2.0rem;
        }

        .professional-accent::before {
            content: '';
            position: absolute;
            left: -20px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 90%;
            background: var(--accent-red);
            border-radius: 2px;
        }
        
        
        
        
        
        
        
        
        
        /* Tabbed Chart Section Styling */
        .chart-section {
            padding: 8rem 0 4rem; /* 顶部留出空间给固定导航栏 */
            background: var(--light-blue);
        }

        /* Tabs Navigation */
        .tabs {
            display: flex;
            justify-content: center;
            margin-bottom: 2rem;
            border-bottom: 2px solid var(--medium-gray);
        }

        .tab-button {
            background: transparent;
            border: none;
            padding: 1rem 2rem;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--medium-gray);
            cursor: pointer;
            transition: color 0.3s ease, border-bottom 0.3s ease;
            border-bottom: 2px solid transparent;
            margin: 0 10px;
        }

        .tab-button.active {
            color: var(--accent-red);
            border-bottom: 2px solid var(--accent-red);
        }

        .tab-content {
            display: none;
            padding: 20px 0;
            background: var(--white);
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(44, 62, 80, 0.1);
        }

        .tab-content.active {
            display: block;
        }

        /* Chart Controls */
        .chart-controls {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin-bottom: 1rem;
            padding: 0 20px;
            flex-wrap: wrap;
        }

        .chart-controls select {
            padding: 0.75rem 1.5rem;
            border: 2px solid var(--primary-blue);
            border-radius: 8px;
            background-color: var(--white);
            color: var(--dark-gray);
            font-size: 1rem;
            cursor: pointer;
            transition: border-color 0.3s ease;
        }

        .chart-controls select:focus {
            outline: none;
            border-color: var(--accent-red);
        }

        .chart-controls select option:disabled {
            color: #ccc; /* 禁用选项变灰 */
        }

        .chart-container-echarts {
            width: 100%;
            height: 600px;
            padding: 20px;
        }

        /* Selected Tags Area Styling */
        .selected-tags-area {
            max-width: 1200px;
            margin: 0 auto 2rem;
            padding: 0 2rem;
            min-height: 40px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            justify-content: center;
        }

        .selected-tag {
            background-color: var(--accent-red);
            color: var(--white);
            padding: 5px 10px;
            border-radius: 5px;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            cursor: default;
        }

        .selected-tag-close {
            margin-left: 8px;
            cursor: pointer;
            font-weight: bold;
            line-height: 1;
            opacity: 0.8;
            transition: opacity 0.2s ease;
        }

        .selected-tag-close:hover {
            opacity: 1;
        }
        
        
        
        
        
        /*Tab 3*/
        /* Controls */
        .chart-controls {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 20px;
            align-items: flex-start;
        }
        
        .control-group {
            display: flex;
            flex-direction: column;
            gap: 5px;
            flex: 1;
            min-width: 250px;
        }
        
        .control-group-country {
            display: flex;
            flex-direction: column;
            gap: 5px;
            /* flex: 1; */
            min-width: 100px;
        }
        
        .control-group-ranking {
            display: flex;
            flex-direction: column;
            gap: 5px;
            /* flex: 1; */
            min-width: 100px;
        }
        
        .control-label {
            font-weight: 500;
            color: var(--uoa-medium-gray);
            font-size: 14px;
        }
        
        .control-select {
            padding: 8px 12px;
            border: 1px solid rgba(1, 33, 105, 0.2);
            border-radius: 4px;
            background-color: var(--uoa-white);
            color: var(--uoa-dark-gray);
            font-family: 'Inter', sans-serif;
            width: 100%;
            transition: var(--transition);
        }
        
        .control-select:focus {
            outline: none;
            border-color: var(--uoa-blue);
            box-shadow: 0 0 0 2px rgba(1, 33, 105, 0.1);
        }
        
        .control-select option:disabled {
            color: #999;
            background-color: #f5f5f5;
        }
        
        .selected-items {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 10px;
            max-height: 100px;
            overflow-y: auto;
            padding: 5px;
            border: 1px solid rgba(1, 33, 105, 0.1);
            border-radius: 4px;
        }
        
        .item-tag {
            background-color: rgba(1, 33, 105, 0.1);
            padding: 5px 10px;
            border-radius: 20px;
            font-size: 12px;
            display: flex;
            align-items: center;
            gap: 5px;
            white-space: nowrap;
        }
        
        .remove-item {
            cursor: pointer;
            font-weight: bold;
            color: var(--uoa-blue);
        }
        
        .selection-info {
            font-size: 12px;
            color: var(--uoa-medium-gray);
            margin-top: 5px;
        }
        
        .selection-warning {
            color: #d32f2f;
            font-weight: 500;
        }
        
        
        /* Tab 3 按钮样式 */
.gras-buttons {
    display: flex;
    justify-content: space-between; /* 改为两端对齐 */
    align-items: center; /* 垂直居中 */
    margin-bottom: 20px;
    position: relative;
}

.center-group {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

.gras-btn {
    padding: 8px 16px;
    border: 1px solid var(--primary-blue);
    border-radius: 4px;
    background-color: var(--white);
    color: var(--primary-blue);
    cursor: pointer;
    transition: all 0.3s ease;
}

.gras-btn.btn-gras {
    background-color: var(--primary-blue);
    color: var(--white);
}

.gras-btn:hover {
    background-color: var(--light-blue);
}

.gras-btn.btn-gras:hover {
    background-color: var(--dark-gray);
}

/* 新增右对齐按钮样式 */
.right-btn {
    margin-left: auto; /* 这个会使按钮右对齐 */
    margin-right: 20px;
}
        
 .watermark {
    position: absolute;
    opacity: 0.1;  /* 降低不透明度 */
    pointer-events: none;
    z-index: 1000;
    top: 0;
    left: 0;
    /* 添加背景透明，确保不遮挡 */
    background-color: transparent !important;
    /* 确保不会阻止鼠标事件 */
    pointer-events: none;
}















/* U100 List表格样式 - 埃森哲风格 */
.table-controls-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.table-controls-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.table-controls-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.table-control-label {
    font-size: 0.9rem;
    color: var(--dark-gray);
    font-weight: 500;
}

.table-select {
    padding: 8px 16px;
    border: 1px solid rgba(44, 62, 80, 0.2);
    border-radius: 6px;
    background-color: var(--white);
    color: var(--dark-gray);
    font-size: 0.9rem;
    min-width: 120px;
    transition: all 0.3s ease;
}

.table-select:focus {
    outline: none;
    border-color: var(--accent-red);
    box-shadow: 0 0 0 2px rgba(231, 76, 60, 0.1);
}

.table-tab-btn {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--primary-blue);
    border-radius: 6px;
    color: var(--primary-blue);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.table-tab-btn.active {
    background-color: var(--primary-blue);
    color: var(--white);
}

.table-tab-btn:hover {
    background-color: rgba(44, 62, 80, 0.1);
}

.table-tab-btn.active:hover {
    background-color: var(--dark-gray);
}

/* 表格容器 */
.table-container {
    background: var(--white);
    /* border-radius: 12px; */
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(44, 62, 80, 0.08);
    border: 1px solid rgba(44, 62, 80, 0.1);
}

/* 表格样式 */
.consulting-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.consulting-table thead {
    background-color: var(--primary-blue);
}

.consulting-table thead th {
    padding: 16px 20px;
    color: var(--white);
    font-weight: 600;
    text-align: left;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
}

.consulting-table thead th:last-child {
    border-right: none;
}

.consulting-table thead th::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-red);
}

.consulting-table tbody tr {
    border-bottom: 1px solid rgba(44, 62, 80, 0.08);
    transition: background-color 0.3s ease;
}

.consulting-table tbody tr:hover {
    background-color: rgba(236, 240, 241, 0.5);
}

.consulting-table tbody tr:nth-child(even) {
    background-color: rgba(236, 240, 241, 0.2);
}

.consulting-table tbody tr:nth-child(even):hover {
    background-color: rgba(236, 240, 241, 0.7);
}

.consulting-table tbody td {
    padding: 14px 20px;
    color: var(--dark-gray);
    vertical-align: middle;
}

.consulting-table tbody td:first-child {
    font-weight: 500;
    color: var(--primary-blue);
}

/* 排名数字样式 */
.rank-cell {
    font-weight: 600;
    text-align: center;
    font-family: var(--font-mono);
}

.rank-cell.high-rank {
    color: var(--accent-red);
}

.rank-cell.medium-rank {
    color: var(--highlight-orange);
}

.rank-cell.low-rank {
    color: var(--medium-gray);
}

/* 国家标签 */
.country-tag {
    display: inline-block;
    padding: 4px 10px;
    background-color: rgba(44, 62, 80, 0.1);
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--primary-blue);
}

/* 无数据样式 */
.no-data {
    color: var(--medium-gray);
    font-style: italic;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .table-controls-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .table-controls-left,
    .table-controls-right {
        width: 100%;
        justify-content: center;
    }
    
    .consulting-table {
        font-size: 0.8rem;
    }
    
    .consulting-table th,
    .consulting-table td {
        padding: 10px 12px;
    }
    
    .table-container {
        overflow-x: auto;
    }
}