:root {
            --primary-color: #1e3a8a;
            --secondary-color: #dc2626;
            --accent-color: #f59e0b;
            --light-color: #f8fafc;
            --dark-color: #0f172a;
            --gray-color: #64748b;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.8;
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            padding: 0.5rem 1.2rem;
            transition: color 0.3s;
        }
        .navbar-nav .nav-link:hover {
            color: var(--secondary-color);
        }
        .hero-section {
            background: linear-gradient(rgba(30, 58, 138, 0.85), rgba(30, 58, 138, 0.9)), url('https://images.unsplash.com/photo-1575361204480-aadea25e6e68?ixlib=rb-4.0.3&auto=format&fit=crop&w=2071&q=80') no-repeat center center/cover;
            color: white;
            padding: 8rem 0;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
        }
        .section-title {
            color: var(--primary-color);
            font-weight: 700;
            border-left: 5px solid var(--secondary-color);
            padding-left: 1rem;
            margin-bottom: 2.5rem;
        }
        .card {
            border: none;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.15);
        }
        .card-icon {
            font-size: 3rem;
            color: var(--secondary-color);
            margin-bottom: 1.5rem;
        }
        .service-card {
            background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
            padding: 2.5rem;
        }
        .prediction-table {
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        .table thead th {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 1.2rem;
        }
        .table tbody tr {
            transition: background-color 0.3s;
        }
        .table tbody tr:hover {
            background-color: #f1f5f9;
        }
        .table td {
            padding: 1.2rem;
            vertical-align: middle;
        }
        .badge-prediction {
            font-size: 0.9rem;
            padding: 0.5rem 1rem;
            border-radius: 50px;
        }
        .news-article {
            border-bottom: 1px solid #e2e8f0;
            padding: 2rem 0;
            transition: background-color 0.3s;
        }
        .news-article:hover {
            background-color: #f8fafc;
            padding-left: 1rem;
            border-radius: 10px;
        }
        .friendlink {
            background-color: #f8fafc;
            padding: 4rem 0;
        }
        .flink {
            display: inline-block;
            background: white;
            color: var(--dark-color);
            padding: 0.8rem 1.8rem;
            margin: 0.5rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 500;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: all 0.3s;
            border: 2px solid transparent;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: scale(1.05);
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 4rem 0 2rem;
        }
        footer a {
            color: #cbd5e1;
            text-decoration: none;
            transition: color 0.3s;
        }
        footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .contact-info li {
            margin-bottom: 0.8rem;
        }
        .social-icons a {
            display: inline-block;
            width: 40px;
            height: 40px;
            background-color: rgba(255,255,255,0.1);
            border-radius: 50%;
            text-align: center;
            line-height: 40px;
            margin-right: 10px;
            transition: background-color 0.3s;
        }
        .social-icons a:hover {
            background-color: var(--secondary-color);
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .hero-section {
                padding: 5rem 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        .stats-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-color);
        }
        .stats-label {
            font-size: 1.1rem;
            color: var(--gray-color);
        }
        .form-control {
            border-radius: 10px;
            padding: 0.8rem 1.2rem;
            border: 1px solid #cbd5e1;
        }
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(30, 58, 138, 0.25);
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 0.8rem 2rem;
            border-radius: 10px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: #1c3a7a;
            border-color: #1c3a7a;
            transform: translateY(-3px);
        }
        .btn-secondary {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            padding: 0.8rem 2rem;
            border-radius: 10px;
            font-weight: 600;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
        }
        .content-rich {
            font-size: 1.1rem;
            color: #4a5568;
        }
        .content-rich h3 {
            color: var(--primary-color);
            margin-top: 2rem;
            margin-bottom: 1rem;
        }
        .content-rich p {
            margin-bottom: 1.5rem;
        }