/* 自定义样式 */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 导航栏动画 */
nav a {
    transition: color 0.3s ease;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: #2563eb;
    transition: width 0.3s ease;
}

nav a:hover::after {
    width: 100%;
}

/* 按钮样式 */
.btn-primary {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

.btn-outline {
    border: 2px solid #2563eb;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background-color: #2563eb;
    color: white;
}

/* 图片悬停效果 */
.img-hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.img-hover:hover {
    transform: scale(1.05);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* 卡片样式 */
.card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
}

/* 加载动画 */
.fade-in {
    animation: fadeIn 0.8s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 服务图标样式 */
.service-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
}