.company-introduction {
    width: 100%;
    max-width: 100%;
    height: auto;
    margin: 0;
    padding: 0;
    object-fit: cover;
}

.product-introduction {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    padding: 20px;
    border-radius: 10px;
    color: #fff;
    /* 产品介绍文字颜色 */
}

.product-introduction h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.product-introduction p {
    font-size: 18px;
    margin-bottom: 20px;
}

.btn-start-trial {
    background-color: #007bff;
    color: #fff;
    border: none;
    padding: 10px 20px;
    font-size: 18px;
    border-radius: 5px;
    text-transform: uppercase;
}

.contact-info {
    background-color: #f8f9fa;
    /* 联系信息背景色 */
    padding: 50px 0;
    color: #333;
}

.record-info {
    background-color: #ddd;
    /* 备案信息背景色 */
    color: #333;
    padding: 15px 0;
}

.carousel-item img {
    width: 100%;
    height: auto;
}

.carousel-control-prev,
.carousel-control-next {
    width: 50px;
    height: 50px;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0, 0, 0, 0.5);
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    width: 30px;
    height: 30px;
    background-size: cover;
    filter: invert(1);
}

.carousel-control-prev {
    left: 0;
    border-top-right-radius: 25px;
    border-bottom-right-radius: 25px;
}

.carousel-control-next {
    right: 0;
    border-top-left-radius: 25px;
    border-bottom-left-radius: 25px;
}

.carousel-inner {
    position: relative;
    height: 280px;
    /* 轮播高度调整 */
}

.carousel-item .row {
    height: 100%;
}

.main-feature {
    text-align: center;
    padding: 20px;
    margin-right: 10px;
}

.main-feature h3 {
    font-size: 24px;
    margin-bottom: 20px;
}

.main-feature p {
    font-size: 16px;
}

.active {
    display: block;
}