:root {
    --primary: #0066cc;
    --primary-dark: #003366;
    --secondary: #6c757d;
    --success: #28a745;
    --light: #f8f9fa;
    --dark: #343a40;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
}

.hero-section {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
}

.navbar-brand {
    font-weight: 600;
}

.product-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15) !important;
}

.card {
    border: none;
    border-radius: 12px;
}

.btn {
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
}

.form-control {
    border-radius: 8px;
    border: 1px solid #dee2e6;
    padding: 12px 15px;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(0, 102, 204, 0.25);
}

/* 导航栏字体调整 */
.navbar-nav .nav-link {
    font-size: 1.1rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
}

.navbar-brand {
    font-size: 1.3rem;
    font-weight: 600;
}

/* 手机端导航栏调整 */
@media (max-width: 768px) {
    .navbar-nav .nav-link {
        font-size: 1rem;
        padding: 0.5rem 0.75rem;
    }
    
    .navbar-brand {
        font-size: 1.2rem;
    }
}

.footer {
    background: var(--dark) !important;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2rem;
    }
    
    .hero-section {
        padding: 3rem 0 !important;
    }
    
    .btn-lg {
        padding: 12px 24px;
        font-size: 1rem;
        
        
    }
}

/* 主营业务页面样式 */
.service-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 12px;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15) !important;
}

.bg-light {
    background-color: #f8f9fa !important;
}

.rounded {
    border-radius: 12px !important;
}