body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }
        .navbar-brand {
            font-weight: bold;
            font-size: 1.8rem;
            color: #0056b3;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 84, 180, 0.8), rgba(0, 84, 180, 0.9)), url('https://via.placeholder.com/1920x800/0056b3/ffffff?text=枣庄银汇商贸销售') center/cover no-repeat;
            color: white;
            padding: 120px 0;
            text-align: center;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .section-title {
            text-align: center;
            margin-bottom: 50px;
            font-size: 2.5rem;
            color: #0056b3;
            position: relative;
            padding-bottom: 15px;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100px;
            height: 4px;
            background-color: #ffc107;
        }
        .card {
            border: none;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.2);
        }
        .card-img-top {
            height: 250px;
            object-fit: cover;
        }
        .btn-primary {
            background-color: #0056b3;
            border-color: #0056b3;
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: bold;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: #004494;
            border-color: #004494;
            transform: scale(1.05);
        }
        .footer {
            background-color: #343a40;
            color: white;
            padding: 50px 0 20px;
        }
        .footer a {
            color: #ffc107;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .friendlink {
            background-color: #e9ecef;
            padding: 40px 0;
            border-radius: 15px;
        }
        .flink {
            display: inline-block;
            margin: 10px 15px;
            padding: 10px 20px;
            background-color: white;
            border-radius: 50px;
            color: #0056b3;
            text-decoration: none;
            font-weight: bold;
            border: 2px solid #0056b3;
            transition: all 0.3s ease;
        }
        .flink:hover {
            background-color: #0056b3;
            color: white;
            transform: scale(1.05);
        }
        .contact-info i {
            color: #0056b3;
            margin-right: 10px;
        }
        .hover-shadow {
            transition: box-shadow 0.3s ease;
        }
        .hover-shadow:hover {
            box-shadow: 0 10px 20px rgba(0,0,0,0.15);
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .section-title {
                font-size: 2rem;
            }
            .card-img-top {
                height: 200px;
            }
        }