:root {
            --primary-color: #1a5fb4;
            --secondary-color: #0d3b66;
            --accent-color: #e63946;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --success-color: #2a9d8f;
            --warning-color: #f4a261;
            --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            --gradient-dark: linear-gradient(135deg, var(--secondary-color) 0%, #0a2a4a 100%);
            --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            --box-shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.15);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            color: var(--dark-color);
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            padding-bottom: 1rem;
            text-align: center;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--accent-color);
            border-radius: 2px;
        }
        .section-padding {
            padding: 80px 0;
        }
        .navbar {
            background: var(--gradient-dark);
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
            padding: 15px 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: white !important;
        }
        .navbar-brand i {
            color: var(--accent-color);
            margin-right: 10px;
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.9) !important;
            font-weight: 500;
            margin: 0 8px;
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: white !important;
        }
        .nav-link:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-color);
            transition: var(--transition);
        }
        .nav-link:hover:after, .nav-link.active:after {
            width: 100%;
        }
        .hero-section {
            background: var(--gradient-primary);
            color: white;
            padding: 120px 0 80px;
            position: relative;
            overflow: hidden;
        }
        .hero-section:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('https://images.unsplash.com/photo-1556056504-5c7696c4c28d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80') center/cover no-repeat;
            opacity: 0.15;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }
        .btn-primary-custom {
            background: var(--accent-color);
            border: none;
            color: white;
            padding: 12px 30px;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
            box-shadow: 0 5px 15px rgba(230, 57, 70, 0.3);
        }
        .btn-primary-custom:hover {
            background: #c1121f;
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(230, 57, 70, 0.4);
        }
        .feature-card {
            background: white;
            border-radius: 15px;
            padding: 30px;
            height: 100%;
            transition: var(--transition);
            box-shadow: var(--box-shadow);
            border: none;
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--box-shadow-hover);
        }
        .feature-card i {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
        }
        .feature-card h4 {
            color: var(--secondary-color);
        }
        .stats-card {
            background: var(--gradient-primary);
            color: white;
            border-radius: 15px;
            padding: 30px;
            text-align: center;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
        }
        .stats-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--box-shadow-hover);
        }
        .stats-card .number {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
        }
        .stats-card .label {
            font-size: 1.1rem;
            opacity: 0.9;
        }
        .service-card {
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            height: 100%;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--box-shadow-hover);
        }
        .service-img {
            height: 200px;
            overflow: hidden;
        }
        .service-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .service-card:hover .service-img img {
            transform: scale(1.05);
        }
        .service-content {
            padding: 25px;
        }
        .service-content h4 {
            color: var(--secondary-color);
        }
        .prediction-card {
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            border-left: 5px solid var(--primary-color);
        }
        .prediction-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--box-shadow-hover);
        }
        .prediction-header {
            background: var(--light-color);
            padding: 15px 20px;
            border-bottom: 1px solid #eee;
        }
        .prediction-body {
            padding: 20px;
        }
        .team-logo {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #eee;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--dark-color);
        }
        .article-card {
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            height: 100%;
        }
        .article-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--box-shadow-hover);
        }
        .article-img {
            height: 200px;
            overflow: hidden;
        }
        .article-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .article-card:hover .article-img img {
            transform: scale(1.05);
        }
        .article-content {
            padding: 25px;
        }
        .article-meta {
            color: #6c757d;
            font-size: 0.9rem;
            margin-bottom: 10px;
        }
        .friendlink {
            background: var(--light-color);
            padding: 60px 0;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 12px 25px;
            margin: 8px;
            border-radius: 50px;
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            border: 1px solid #eee;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(26, 95, 180, 0.2);
        }
        .footer {
            background: var(--gradient-dark);
            color: white;
            padding: 70px 0 20px;
        }
        .footer h5 {
            color: white;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 10px;
        }
        .footer h5:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--accent-color);
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            display: block;
            margin-bottom: 10px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .footer-contact li {
            margin-bottom: 15px;
            color: rgba(255, 255, 255, 0.8);
        }
        .footer-contact li i {
            color: var(--accent-color);
            margin-right: 10px;
            width: 20px;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            margin-top: 50px;
            text-align: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 60px 0;
            }
            .hero-section {
                padding: 100px 0 60px;
                text-align: center;
            }
            .footer {
                text-align: center;
            }
            .footer h5:after {
                left: 50%;
                transform: translateX(-50%);
            }
        }
        .fade-in {
            animation: fadeIn 1s ease forwards;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .sticky-nav {
            background: rgba(13, 59, 102, 0.95);
            backdrop-filter: blur(10px);
            padding: 10px 0;
        }
        ::-webkit-scrollbar {
            width: 10px;
        }
        ::-webkit-scrollbar-track {
            background: #f1f1f1;
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-color);
            border-radius: 5px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--secondary-color);
        }