/* ========== banner 轮播 ========== */
.banner {
    position: relative;
    width: 100%;
}

.banner .swiper {
    width: 100%;
}

.banner .swiper-slide {
    position: relative;
    overflow: hidden;
}

.banner .swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 内容层 - 居中覆盖在图片上 */
.banner-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    z-index: 2;
    width: 90%;
    max-width: 900px;
}

/* 顶部标签 */
.banner-tag {
    display: inline-block;
    background: #009490;
    color: #fff;
    font-size: 16px;
    padding: 6px 20px;
    border-radius: 20px;
    margin-bottom: 25px;
    letter-spacing: 1px;
}

/* 主标题 */
.banner-content h1 {
    font-size: 48px;
    font-weight: bold;
    line-height: 1.3;
    margin-bottom: 20px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* 副标题描述 */
.banner-content p {
    font-size: 18px;
    opacity: 0.92;
    margin-bottom: 50px;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
    letter-spacing: 0.5px;
}

/* 按钮组 */
.banner-btns {
    display: flex;
    justify-content: center;
    gap: 5%;
}

.banner-btn {
    display: inline-block;
    font-size: 18px;
    color: #fff;
    transition: all 0.3s ease;
}
.banner-btn:hover {
    color: var(--color);
}



/* 分页器样式 */
.banner .swiper-pagination {
    bottom: 24px !important;
}

.banner .swiper-pagination-bullet {
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 1;
    margin: 0 5px !important;
    transition: all 0.3s;
}

.banner .swiper-pagination-bullet-active {
    background: #009490;
    width: 26px;
    border-radius: 5px;
}


/* ====== 响应式 ====== */
@media screen and (max-width: 1600px) {
    .banner-content h1 {
        font-size: 40px;
        margin-bottom: 12px;
    }
    .banner-tag {
        font-size: 16px;
        padding: 5px 17px;
        margin-bottom: 16px;
    }
    .banner-content p {
        font-size: 16px;
        margin-bottom: 28px;
    }
    .banner-btn {
        font-size: 16px;
    }
    .banner .swiper-pagination {
        bottom: 20px !important;
    }
}

@media screen and (max-width: 1000px) {
    .banner .swiper-slide{
        height: 100vw;
    }
    .banner-content h1 {
        font-size: 18px;
        margin-bottom: 10px;
    }
    .banner-tag {
        font-size: 11px;
        padding: 4px 13px;
        margin-bottom: 12px;
    }
    .banner-content p {
        font-size: 14px;
        margin-bottom: 22px;
    }

    .banner-btn {
        font-size: 14px;
    }
    .banner .swiper-pagination {
        bottom: 14px !important;
    }
    .banner .swiper-pagination-bullet{
        width: 6px;
        height: 6px;
    }
    .banner .swiper-pagination-bullet-active{
        width: 15px;
        height: 6px;
    }
}


.index-two-swiper .swiper-slide{
    width: 45vw;
}
.index-two-swiper .swiper-slide .img{
    padding-bottom: 65%;
    border-radius: 20px;
}
.index-two-swiper .swiper-slide .text{
    margin-top: 50px;
    opacity: 0;
    text-align: center;
    transition: all 1s ease;
}
.index-two-swiper .swiper-slide .text h3{
        color: #000;
    font-size: 24px;
    font-weight: bold;
}
.index-two-swiper .swiper-slide .text p{
    color: #000;
    font-size: 18px;
    margin-top: 20px;
    white-space: pre-wrap;
}
.index-two-swiper .swiper-slide .text  .buts{
    margin-top: 30px;
}
.index-two-swiper .swiper-slide.swiper-slide-active .text{
    opacity: 1;
}

@media screen and (max-width: 1600px) {
    .index-two-swiper .swiper-slide{
        width: 55vw;
    }
    .index-two-swiper .swiper-slide .text h3{
        font-size: 20px;
    }
    .index-two-swiper .swiper-slide .text p{
        font-size: 16px;
    }
    .index-two-swiper .swiper-slide .text .buts{
        margin-top: 15px;
    }
}
@media screen and (max-width: 1000px) {
  .index-two-swiper .swiper-slide{
    width: 90vw;
  }
  .index-two-swiper .swiper-slide .text{
    margin-top: 20px;
  }
  .index-two-swiper .swiper-slide .text h3{
    font-size: 18px;
  }
  .index-two-swiper .swiper-slide .text p{
    font-size: 14px;
    margin-top: 10px;
  }
}

/* ========== index-pro 核心设备介绍 ========== */
.index-pro {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8%;
}

.index-pro .text {
    flex: 0 0 48%;
}

.index-pro .text h3 {
    font-size: 36px;
    font-weight: 700;
    color: #222;
    line-height: 1.45;
    margin-bottom: 24px;
}

.index-pro .text p {
    font-size: 16px;
    color: #666;
    line-height: 1.85;
    margin-bottom: 32px;
}

.index-pro .text .buts {
    display: inline-block;
}

.index-pro .img {
    flex: 1;

}

.index-pro .img img {
    width: 100%;
    height: auto;
}


/* 响应式 */
@media screen and (max-width: 1600px) {
    .index-pro {
        gap: 6%;
    }
    .index-pro .text h3 {
        font-size: 30px;
        margin-bottom: 18px;
    }
    .index-pro .text p {
        font-size: 15px;
        margin-bottom: 26px;
    }
}

@media screen and (max-width: 1000px) {
    .index-pro {
        flex-direction: column-reverse;
        gap: 30px;
    }
    .index-pro .text,
    .index-pro .img {
        width: 100%;
        flex: none;
    }
    .index-pro .text h3 {
        font-size: 22px;
        margin-bottom: 14px;
    }
    .index-pro .text p {
        font-size: 14px;
        margin-bottom: 20px;
    }
}
.index-four {
    background-image: linear-gradient(to bottom, #009490, #73C4C2);
}
.index-four .box-title h3,.index-four .box-title p{
    color: #fff;
}


/* ========== index-case 案例展示 ========== */

.index-case ul {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
}

.index-case ul li {
    width: calc(25% - 24px);
    min-width: 0;
}

.index-case-list {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.35s ease;
}

.index-case-list:hover {
    transform: translateY(-4px);
}

/* 图片区域 */
.index-case-list .img {
    position: relative;
    padding-bottom: 75%;
    overflow: hidden;
}


/* 文字区域 */
.index-case-list .text {
    padding: 20px 0;
}

.index-case-list .text h3 {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    line-height: 1.55;
}


/* 响应式 */
@media screen and (max-width: 1600px) {
    .index-case ul {
        gap: 18px;
    }
    .index-case ul li {
        width: calc(25% - 14px);
    }
    .index-case-list .text {
        padding: 12px 0;
    }
    .index-case-list .text h3 {
        font-size: 16px;
    }
}

@media screen and (max-width: 1200px) {
    .index-case ul {
        flex-wrap: wrap;
        gap: 14px;
    }
        .index-case ul li {
        width: calc(25% - 12px);
    }
       .index-case-list .text h3{
        font-size: 14px;
       }
}

@media screen and (max-width: 1000px) {
    .index-case ul {
        gap: 12px;
    }
    .index-case ul li {
        width: calc(50% - 6px);
    }
    .index-case-list .text h3 {
        font-size: 13px;
    }
}

.index-three{
    overflow: hidden;
}