:root {
            --primary-color: #1a4d8f;
            --secondary-color: #e63946;
            --accent-color: #2a9d8f;
            --dark-color: #264653;
            --light-color: #f8f9fa;
            --text-dark: #333333;
            --text-light: #6c757d;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--text-dark);
            line-height: 1.6;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--primary-color) !important;
        }
        .nav-link {
            font-weight: 500;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: var(--secondary-color) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(26, 77, 143, 0.9), rgba(38, 70, 83, 0.9)), url('https://images.unsplash.com/photo-1551958219-acbc608c6377?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 100px 0;
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.2rem;
            }
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 50px;
            font-weight: 700;
            color: var(--dark-color);
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
        }
        .text-center .section-title:after {
            left: 50%;
            transform: translateX(-50%);
        }
        .card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .card-img-top {
            height: 220px;
            object-fit: cover;
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .match-card {
            border-left: 5px solid var(--secondary-color);
            background: linear-gradient(to right, #f8f9fa, #ffffff);
        }
        .prediction-badge {
            background-color: var(--accent-color);
            color: white;
            padding: 5px 15px;
            border-radius: 20px;
            font-weight: 600;
        }
        .data-stat {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        .team-flag {
            width: 60px;
            height: 40px;
            object-fit: cover;
            border-radius: 4px;
            box-shadow: 0 3px 6px rgba(0,0,0,0.1);
        }
        .live-badge {
            background-color: var(--secondary-color);
            color: white;
            padding: 5px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            animation: pulse 1.5s infinite;
        }
        @keyframes pulse {
            0% { opacity: 1; }
            50% { opacity: 0.7; }
            100% { opacity: 1; }
        }
        .analysis-box {
            background-color: white;
            border-radius: 10px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            margin-bottom: 30px;
            border-top: 4px solid var(--accent-color);
        }
        .contact-box {
            background-color: var(--light-color);
            padding: 30px;
            border-radius: 10px;
            height: 100%;
        }
        .flink {
            display: inline-block;
            background-color: #f8f9fa;
            padding: 10px 20px;
            margin: 5px;
            border-radius: 5px;
            color: var(--text-dark);
            text-decoration: none;
            transition: all 0.3s;
            border: 1px solid #dee2e6;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        .footer {
            background-color: var(--dark-color);
            color: white;
            padding: 60px 0 30px;
        }
        .footer a {
            color: #e9ecef;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .social-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255,255,255,0.1);
            border-radius: 50%;
            margin-right: 10px;
            transition: background-color 0.3s;
        }
        .social-icon:hover {
            background-color: var(--accent-color);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            opacity: 0;
            transition: opacity 0.3s, transform 0.3s;
            z-index: 1000;
        }
        .back-to-top.visible {
            opacity: 1;
        }
        .back-to-top:hover {
            transform: translateY(-5px);
            color: white;
            background-color: var(--secondary-color);
        }
        .content-section p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .content-section h3 {
            color: var(--primary-color);
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-weight: 600;
        }
        .content-section ul {
            padding-left: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .content-section li {
            margin-bottom: 0.5rem;
        }
        .tab-content {
            padding: 30px;
            border: 1px solid #dee2e6;
            border-top: none;
            border-radius: 0 0 10px 10px;
        }
        .nav-tabs .nav-link.active {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        .nav-tabs .nav-link {
            color: var(--text-dark);
            font-weight: 500;
        }