:root {
            --primary-color: #1a3c8b;
            --secondary-color: #e63946;
            --accent-color: #2a9d8f;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --gray-color: #6c757d;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--dark-color);
            line-height: 1.8;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 3rem;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
        }
        .section-title.text-center:after {
            left: 50%;
            transform: translateX(-50%);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 60, 139, 0.9), rgba(26, 60, 139, 0.8)), url('https://images.unsplash.com/photo-1575361204480-aadea25e6e68?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 120px 0 80px;
            position: relative;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.5rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .nav-bar {
            background: rgba(255,255,255,0.95);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            padding: 15px 0;
        }
        .nav-bar.scrolled {
            padding: 10px 0;
            background: rgba(255,255,255,0.98);
        }
        .navbar-brand {
            font-weight: 700;
            color: var(--primary-color) !important;
            font-size: 1.8rem;
        }
        .nav-link {
            font-weight: 600;
            color: var(--dark-color) !important;
            margin: 0 8px;
            transition: all 0.3s ease;
        }
        .nav-link:hover {
            color: var(--secondary-color) !important;
        }
        .feature-card {
            background: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            height: 100%;
            border: 1px solid rgba(0,0,0,0.05);
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.1);
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: white;
            font-size: 1.8rem;
        }
        .service-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            height: 100%;
        }
        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.1);
        }
        .service-img {
            height: 200px;
            overflow: hidden;
        }
        .service-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .service-card:hover .service-img img {
            transform: scale(1.05);
        }
        .stats-section {
            background: linear-gradient(rgba(26, 60, 139, 0.9), rgba(42, 157, 143, 0.9)), url('https://images.unsplash.com/photo-1556056504-5c7696c4c28d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 80px 0;
        }
        .stat-item {
            text-align: center;
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 10px;
            color: white;
        }
        .footer {
            background: #1a1f36;
            color: #b0b7c3;
            padding: 70px 0 30px;
        }
        .footer h5 {
            color: white;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer h5:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--secondary-color);
        }
        .footer-links a {
            color: #b0b7c3;
            text-decoration: none;
            display: block;
            margin-bottom: 12px;
            transition: all 0.3s ease;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .friendlink {
            background: #f8f9fa;
            padding: 60px 0;
            border-top: 1px solid #eaeaea;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 12px 25px;
            margin: 8px;
            border-radius: 8px;
            color: var(--primary-color);
            font-weight: 600;
            text-decoration: none;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            transition: all 0.3s ease;
            border: 1px solid #eaeaea;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(26, 60, 139, 0.15);
        }
        .contact-info {
            background: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.08);
            margin-bottom: 30px;
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            margin-bottom: 20px;
        }
        .blog-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            height: 100%;
        }
        .blog-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.1);
        }
        .blog-content {
            padding: 25px;
        }
        .blog-date {
            color: var(--gray-color);
            font-size: 0.9rem;
            margin-bottom: 10px;
        }
        .btn-primary-custom {
            background: linear-gradient(to right, var(--primary-color), var(--accent-color));
            border: none;
            color: white;
            padding: 12px 30px;
            border-radius: 8px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            background: linear-gradient(to right, var(--accent-color), var(--primary-color));
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(26, 60, 139, 0.3);
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(26, 60, 139, 0.1);
            color: var(--primary-color);
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 25px 0;
            font-size: 0.95em;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
        }
        .data-table thead tr {
            background: linear-gradient(to right, var(--primary-color), var(--accent-color));
            color: white;
            text-align: left;
            font-weight: 600;
        }
        .data-table th, .data-table td {
            padding: 15px 20px;
        }
        .data-table tbody tr {
            border-bottom: 1px solid #eaeaea;
        }
        .data-table tbody tr:nth-of-type(even) {
            background-color: #f8f9fa;
        }
        .data-table tbody tr:hover {
            background-color: rgba(26, 60, 139, 0.05);
        }
        .data-table tbody tr:last-of-type {
            border-bottom: 2px solid var(--primary-color);
        }
        .breadcrumb {
            background: #f8f9fa;
            padding: 15px 0;
            border-radius: 8px;
        }
        .breadcrumb-item a {
            color: var(--primary-color);
            text-decoration: none;
        }
        .breadcrumb-item.active {
            color: var(--gray-color);
        }
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(26, 60, 139, 0.25);
        }
        .analysis-badge {
            display: inline-block;
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-right: 10px;
            margin-bottom: 10px;
        }
        .badge-success {
            background: rgba(42, 157, 143, 0.15);
            color: var(--accent-color);
        }
        .badge-warning {
            background: rgba(255, 193, 7, 0.15);
            color: #ffc107;
        }
        .badge-danger {
            background: rgba(230, 57, 70, 0.15);
            color: var(--secondary-color);
        }