:root {
            --primary-color: #0056b3;
            --secondary-color: #ffc107;
            --dark-color: #212529;
            --light-color: #f8f9fa;
            --success-color: #198754;
            --danger-color: #dc3545;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--dark-color);
            line-height: 1.8;
            overflow-x: hidden;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color) 0%, #003d82 100%);
            box-shadow: var(--shadow);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: white !important;
            display: flex;
            align-items: center;
        }
        .navbar-brand i {
            margin-right: 10px;
            color: var(--secondary-color);
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.9) !important;
            font-weight: 500;
            padding: 0.75rem 1.25rem !important;
            border-radius: 0.375rem;
            transition: var(--transition);
        }
        .nav-link:hover, .nav-link.active {
            color: white !important;
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        .hero {
            background: url('https://via.placeholder.com/1920x800/0056b3/ffffff?text=德国vs库拉索世界杯巅峰对决') center/cover no-repeat;
            padding: 120px 0;
            color: white;
            text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.7);
            position: relative;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 86, 179, 0.85);
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
        }
        .btn-primary-custom {
            background-color: var(--secondary-color);
            border: none;
            color: var(--dark-color);
            padding: 0.75rem 2rem;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .btn-primary-custom:hover {
            background-color: #e0a800;
            transform: scale(1.05);
            color: black;
        }
        .section-title {
            color: var(--primary-color);
            font-weight: 700;
            margin-bottom: 2rem;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 60px;
            height: 4px;
            background-color: var(--secondary-color);
            border-radius: 2px;
        }
        .card-custom {
            border: none;
            border-radius: 15px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            overflow: hidden;
        }
        .card-custom:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
        }
        .card-custom img {
            height: 200px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card-custom:hover img {
            transform: scale(1.05);
        }
        .stats-box {
            background: linear-gradient(135deg, var(--primary-color), #003366);
            color: white;
            padding: 2rem;
            border-radius: 15px;
            text-align: center;
            box-shadow: var(--shadow);
        }
        .stats-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--secondary-color);
            display: block;
            line-height: 1;
        }
        .live-score {
            background-color: var(--light-color);
            border-left: 5px solid var(--danger-color);
            padding: 1.5rem;
            border-radius: 10px;
            margin-bottom: 1.5rem;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1rem;
            align-items: center;
        }
        .live-score .team {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .live-score .team-logo {
            width: 50px;
            height: 50px;
            object-fit: contain;
        }
        .score {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--danger-color);
            text-align: center;
        }
        .analysis-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 2rem;
        }
        .friendlink .flink {
            display: inline-block;
            background-color: var(--light-color);
            color: var(--primary-color);
            padding: 0.75rem 1.5rem;
            margin: 0.5rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .friendlink .flink:hover {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--secondary-color);
            transform: translateY(-3px);
        }
        footer {
            background-color: var(--dark-color);
            color: var(--light-color);
            padding: 3rem 0 1.5rem;
        }
        footer a {
            color: #adb5bd;
            text-decoration: none;
            transition: color 0.3s;
        }
        footer a:hover {
            color: var(--secondary-color);
        }
        .social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: #495057;
            color: white;
            border-radius: 50%;
            margin-right: 10px;
            transition: var(--transition);
        }
        .social-icons a:hover {
            background-color: var(--primary-color);
            transform: rotate(15deg);
        }
        .breadcrumb {
            background-color: transparent;
            padding: 0;
        }
        .breadcrumb-item.active {
            color: var(--secondary-color);
        }
        .table-custom {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .table-custom thead {
            background-color: var(--primary-color);
            color: white;
        }
        .highlight {
            background-color: rgba(255, 193, 7, 0.1);
            border-left: 4px solid var(--secondary-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .contact-form .form-control {
            border-radius: 10px;
            padding: 0.75rem 1rem;
            border: 1px solid #ced4da;
            transition: var(--transition);
        }
        .contact-form .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(0, 86, 179, 0.25);
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(0, 86, 179, 0.1);
            color: var(--primary-color);
            font-weight: 600;
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 0.25rem rgba(0, 86, 179, 0.25);
        }