: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: var(--dark-color);
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            padding: 1rem 0;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            font-weight: 600;
            color: var(--dark-color);
            margin: 0 0.5rem;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color);
            background-color: rgba(30, 58, 138, 0.1);
        }
        .hero {
            background: linear-gradient(rgba(15, 23, 42, 0.85), rgba(30, 58, 138, 0.9)), url('https://images.unsplash.com/photo-1556056504-5c7696c4c28d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            color: white;
            padding: 8rem 0;
            text-align: center;
        }
        .hero h1 {
            font-size: 3.5rem;
            color: white;
            margin-bottom: 1.5rem;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2rem;
        }
        .btn-primary {
            background-color: var(--secondary-color);
            border: none;
            padding: 0.8rem 2.5rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: #b91c1c;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(220, 38, 38, 0.2);
        }
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
            position: relative;
        }
        .section-title:after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            background-color: var(--secondary-color);
            margin: 1rem auto;
            border-radius: 2px;
        }
        .feature-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
            height: 100%;
            transition: transform 0.3s, box-shadow 0.3s;
            border-top: 5px solid var(--primary-color);
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
        }
        .feature-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
        }
        .analysis-card {
            border: 1px solid #e2e8f0;
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s;
            height: 100%;
        }
        .analysis-card:hover {
            border-color: var(--primary-color);
            box-shadow: 0 10px 25px rgba(30, 58, 138, 0.1);
        }
        .analysis-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }
        .analysis-content {
            padding: 1.5rem;
        }
        .analysis-date {
            color: var(--gray-color);
            font-size: 0.9rem;
        }
        .team-logo {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            object-fit: contain;
            border: 2px solid #e2e8f0;
        }
        .prediction-table {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        }
        .table thead th {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 1.2rem;
        }
        .table tbody td {
            padding: 1.2rem;
            vertical-align: middle;
        }
        .table tbody tr:hover {
            background-color: rgba(30, 58, 138, 0.05);
        }
        .progress {
            height: 10px;
            border-radius: 5px;
        }
        .contact-info {
            list-style: none;
            padding: 0;
        }
        .contact-info li {
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
        }
        .contact-info i {
            width: 50px;
            height: 50px;
            background-color: rgba(30, 58, 138, 0.1);
            color: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1rem;
            font-size: 1.2rem;
        }
        .friendlink {
            background-color: #f8fafc;
            padding: 4rem 0;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 0.8rem 1.8rem;
            margin: 0.5rem;
            border-radius: 50px;
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 600;
            border: 2px solid #e2e8f0;
            transition: all 0.3s;
        }
        .flink:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
            transform: translateY(-3px);
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 3rem 0 1.5rem;
        }
        footer a {
            color: #cbd5e1;
            text-decoration: none;
            transition: color 0.3s;
        }
        footer a:hover {
            color: white;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
            margin-bottom: 2rem;
        }
        .social-icons a {
            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: 0 0.5rem;
            transition: all 0.3s;
        }
        .social-icons a:hover {
            background-color: var(--secondary-color);
            transform: translateY(-3px);
        }
        .copyright {
            border-top: 1px solid #334155;
            padding-top: 1.5rem;
            margin-top: 2rem;
            text-align: center;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .navbar-brand {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }