a {
    all: unset;
}
/* 顶部栏目--开始 */
.h-top {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
}
.liyan-icon {
    width: 117px;
    height: auto;
    margin-left: 5px;
}
.module-li {
    width: 119px;
    height: 40px;
    font-size: 14px;
    flex: 1;
    text-align: center;
    border-radius: 10px;
}
.module-li:hover {
    cursor: pointer;
    font-family: SourceHanSansCN-Regular;
    background-color: rgba(0, 105, 234, 1);
    color: rgba(255, 255, 255);
}
.consult {
    margin-right: 50px;
    width: 109px;
    background-color: rgba(0, 105, 234, 1);
    color: #fff;
    border-radius: 10px;
    cursor: pointer;
}
/* 顶部栏目--结束 */

/* 顶部轮播--开始 */
.carousel {
    position: relative;
    width: 100%;
    max-width: 1905px;
    height: 632px;
    /* margin-top: -40px; */
    overflow: hidden;
    transition: box-shadow 0.2s;
}

/* 图片容器 —— 承载所有图片，flex保证水平排列，通过transform滑动 */
.carousel-images {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 0.45s cubic-bezier(0.25, 0.1, 0.15, 1.0); /* 平滑缓动 */
    will-change: transform;
}

/* 每张图片均占据容器完整宽高，且保证图片覆盖不拉伸变形 */
.carousel-images img {
    width: 100%;           /* 固定与父级一致 */
    height: 632px;
    object-fit: cover;       /* 覆盖区域，可能裁剪但保证比例 */
    flex-shrink: 0;          /* 防止被压缩 */
    user-select: none;       /* 禁止拖动图片 */
    pointer-events: none;    /* 图片不拦截点击（让按钮始终可点） */
    background-color: #2a2a3a; /* 图片加载间隙或透明区域背景 */
}

/* ---------- 左右按钮：完全符合需求，只有点击功能 + 极简样式 ---------- */
.nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    background-color: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(3px);
    border: none;
    border-radius: 40px;
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.15), 0 2px 4px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-size: 34px;
    font-weight: 300;
    color: #1e2b3c;
    line-height: 1;
    padding-bottom: 6px;
    z-index: 15;
}

/* 左箭头 */
.nav-btn.left {
    left: 18px;
}
.nav-btn.left::before {
    content: '‹';
    font-size: 58px;
    line-height: 1;
    opacity: 0.9;
    transform: translateY(-2px);
    display: block;
}

.nav-btn.right {
    right: 18px;
}
.nav-btn.right::before {
    content: '›';
    font-size: 58px;
    line-height: 1;
    opacity: 0.9;
    transform: translateY(-2px);
    display: block;
}

/* 按钮悬浮效果 */
.nav-btn:hover {
    cursor: pointer;
    background-color: rgba(255, 255, 255, 0.95);
    transform: translateY(-50%) scale(1.06);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.25);
    color: #000;
}

.nav-btn:active {
    transform: translateY(-50%) scale(0.98);
    background-color: rgba(235, 240, 255, 0.9);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* 焦点样式简洁 (保留可访问性但不显眼) */
.nav-btn:focus-visible {
    outline: 3px solid #4a90e2;
    outline-offset: 2px;
}

/* 针对老旧浏览器做fallback */
.carousel-images img {
    -webkit-user-drag: none;
}
/* 顶部轮播--结束 */

/* 业务介绍--开始 */
.business {
    display: flex;
    flex-wrap: nowrap;
    gap: 24px;width: 100%;
}

.business-item {
    width: 243px;
    height: 398px;
    flex: 1 1 0px;
    min-width: 0;
    background-color: #fff;
    padding: 20px;
    box-shadow: 0 10px 20px -5px rgba(70, 120, 200, 0.25),
            0 4px 8px 0 rgba(0, 0, 0, 0.03);
}
.business-consult {
    width: 150px;
    height: 44px;
    border:1px solid rgba(0, 105, 234, 1);
    border-radius: 10px;
    color: rgba(0, 105, 234, 1);
    margin-top: 40px;
    font-size: 18px;
}
.business-consult:hover {
    cursor: pointer;
    color: #fff;
    background-color: rgba(0, 105, 234, 1);
}
/* 业务介绍--结束 */

/* 解决方案--开始 */
.solution {
    display: flex;
    flex-wrap: nowrap;
    gap: 24px;width: 100%;
}

.solution-item {
    width: 225px;
    height: 302px;
    color: #fff;
    flex: 1 1 0px;
    min-width: 0;
    position: relative;
}

.solution-item:hover .planDel {
    cursor: pointer;
    display: block;
}

.planDel {
    display: none;
    width: 185;
    height: 242px;
    background-color: rgb(0, 0, 0, 0.65);
    padding: 30px 20px;
    position: absolute;
    top: 0;
    left: 0;
}
/* 解决方案--结束 */

/* 技术总结--开始 */
.summary {
    position: absolute;
    bottom: 50px;
    left: 45px;
    width: 100%;
    max-width: 1104px;
    height: 424px;
    overflow: hidden;
    transition: box-shadow 0.2s;
}

/* 图片容器 —— 承载所有图片，flex保证水平排列，通过transform滑动 */
.summary-images {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 0.45s cubic-bezier(0.25, 0.1, 0.15, 1.0); /* 平滑缓动 */
    will-change: transform;
}

/* 每张图片均占据容器完整宽高，且保证图片覆盖不拉伸变形 */
.summary-images img {
    width: 100%;           /* 固定与父级一致 */
    height: 632px;
    object-fit: cover;       /* 覆盖区域，可能裁剪但保证比例 */
    flex-shrink: 0;          /* 防止被压缩 */
    user-select: none;       /* 禁止拖动图片 */
    pointer-events: none;    /* 图片不拦截点击（让按钮始终可点） */
    background-color: #2a2a3a; /* 图片加载间隙或透明区域背景 */
}
/* 技术总结--结束 */

/* 底部--开始 */
.bottom-list-item {
    width: 178px;
    text-indent: 0.75em;
    font-size: 13px;
    line-height: 30px;
    border-bottom: 1px solid rgb(255, 255, 255, 0.25);
}

.bottom-list-item:hover {
    cursor: pointer;
    color: #3c78d8;
}
/* 底部--结束 */

/* 侧边栏--开始 */
.side-tip {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background-color: #216bee;
    width: 50px;
    border-radius: 20px 0 0 20px;
}

.email {
    width: 30px;
    height: 30px;
    position: relative;
    margin: 15px 0 10px 0;
    background-image: url('../img/email-icon.png');
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center; 
}

.email-item {
    display: none;
    position: absolute;
    width: 150px;
    height: 40px;
    left: -170px;
    top: 10px;
    background-color: #fff;
    font-size: 13px;
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.15), 0 2px 4px rgba(0, 0, 0, 0.2);
    border-radius: 10px 0 0 10px;
    line-height: 20px;
    padding: 10px 5px;
}

.email:hover {
    cursor: pointer;
    background-image: url('../img/email-icon-hover.png');
}

.email:hover .email-item {
    cursor: pointer;
    display: block;
}

.phone {
    width: 30px;
    height: 30px;
    position: relative;
    margin: 15px 0 10px 0;
    background-image: url('../img/phone-icon.png');
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center; 
}

.phone-item {
    display: none;
    position: absolute;
    width: 150px;
    height: 84px;
    left: -170px;
    top: 10px;
    background-color: #fff;
    font-size: 13px;
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.15), 0 2px 4px rgba(0, 0, 0, 0.2);
    border-radius: 10px 0 0 10px;
    line-height: 22px;
    padding: 10px 5px;
}

.phone:hover {
    cursor: pointer;
    background-image: url('../img/phone-icon-hover.png');
}

.phone:hover .phone-item {
    cursor: pointer;
    display: block;
}

.qr-code {
    width: 30px;
    height: 30px;
    position: relative;
    margin: 10px 0 15px 0;
    background-image: url('../img/qr-code-icon.png');
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center; 
}

.qr-code-item {
    display: none;
    position: absolute;
    width: 120px;
    height: 140px;
    left: -150px;
    top: 10px;
    background-color: #fff;
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.15), 0 2px 4px rgba(0, 0, 0, 0.2);
    border-radius: 10px 0 0 10px;
    padding: 10px;
}

.qr-code:hover {
    cursor: pointer;
    background-image: url('../img/qr-code-icon-hover.png');
}

.qr-code:hover .qr-code-item {
    cursor: pointer;
    display: block;
}
/* 侧边栏--结束 */

/* 返回顶部--开始 */
.gototop_backToTop {
    width: 40px;
    height: 40px;
    text-indent: -999em;
    z-index: 20000;
    background-image: url('../img/top.png');
    background-repeat: no-repeat;
    background-position: -296px 0;
    display: inline;
    position: fixed;
    bottom: 100px;
    right: 20px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.gototop_backToTop.show {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.gototop_backToTop:hover {
    cursor: pointer;
    background: url('../img/top.png') no-repeat -296px -42px;
}
/* 返回顶部--结束 */