/* UWB定位解决方案页面
 * 全站根字号为 62.5%，即 1rem = 10px。
 * 本页按照设计稿采用 1180px 内容区、白色与浅蓝色区块交替的视觉规范。
 */

/* ---------- 页面通用标题 ---------- */
.uwb-section-title {
    margin: 0 0 4rem;
    color: #343A40;
    font-size: 3.2rem;
    font-weight: 500;
    line-height: 4.5rem;
}

.uwb-section-subtitle {
    margin: -2.8rem auto 4rem;
    color: #70757D;
    font-size: 1.6rem;
    font-weight: 400;
    line-height: 2.4rem;
}

/* ---------- 顶部 Banner ---------- */
.uwb-banner {
    width: 100%;
    height: 45rem;
    background: url("../img/uwb/uwb_bg.png") no-repeat center;
    background-size: cover;
}

.uwb-banner-text {
    width: 56rem;
    max-width: 100%;
}

.uwb-banner-text h1 {
    margin: 0;
    color: #343A40;
    font-size: 3.6rem;
    font-weight: 600;
    line-height: 5rem;
}

.uwb-banner-text p {
    margin: 2rem 0 4rem;
    color: #3B4859;
    font-size: 1.6rem;
    line-height: 2.6rem;
}

/* ---------- 图文组合卡片公共样式 ---------- */
.uwb-split-card {
    display: flex;
    align-items: stretch;
    width: 100%;
    overflow: hidden;
    background: #FFFFFF;
    border-radius: 0.8rem;
    box-shadow: 0 0.4rem 1rem rgba(224, 232, 244, 0.35);
}

.uwb-copy {
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-sizing: border-box;
}

.uwb-copy h3 {
    margin: 0 0 1.8rem;
    color: #343A40;
    font-size: 2rem;
    font-weight: 500;
    line-height: 2.8rem;
}

.uwb-copy p {
    margin: 0;
    color: #70757D;
    font-size: 1.4rem;
    line-height: 2.4rem;
}

.uwb-copy ul {
    margin: 2rem 0 0;
    padding: 0;
    list-style: none;
}

.uwb-copy li {
    position: relative;
    padding-left: 1.8rem;
    color: #3B4859;
    font-size: 1.4rem;
    line-height: 2.4rem;
}

.uwb-copy li::before {
    position: absolute;
    top: 0.9rem;
    left: 0;
    width: 0.6rem;
    height: 0.6rem;
    background: #3B7CFF;
    border-radius: 50%;
    content: "";
}

.uwb-copy li + li {
    margin-top: 0.8rem;
}

/* ---------- 系统架构 ---------- */
.uwb-architecture {
    background: #F4F8FE;
}

.uwb-architecture-card {
    align-items: flex-start;
    min-height: 42rem;
    padding: 2rem 0 2rem 2rem;
    box-sizing: border-box;
}

.uwb-architecture-img {
    display: block;
    flex: 0 0 73rem;
    width: 73rem;
    max-width: 100%;
    height: 58.6rem;
    padding-right: 1rem;
    object-fit: contain;
    box-sizing: border-box;
}

.uwb-architecture-intro {
    display: flex;
    flex: 1;
    flex-direction: column;
    justify-content: flex-start;
    padding: 2rem 3rem 2rem 1rem;
    box-sizing: border-box;
}

.uwb-architecture-item h4 {
    margin: 0 0 0.8rem;
    color: #343A40;
    font-size: 1.6rem;
    font-weight: 500;
    line-height: 2.2rem;
}

.uwb-architecture-item p {
    margin: 0;
    color: #70757D;
    font-size: 1.4rem;
    line-height: 2.4rem;
}

.uwb-architecture-item + .uwb-architecture-item {
    margin-top: 2.4rem;
}

/* ---------- 核心硬件产品 ---------- */
.uwb-hardware {
    background: #FFFFFF;
}

.uwb-hardware-list {
    display: flex;
    justify-content: space-between;
}

.uwb-hardware-card {
    width: calc(33.333% - 1.4rem);
    overflow: hidden;
    border-radius: 0.8rem;
    box-sizing: border-box;
}

.uwb-hardware-card-blue {
    background: #F4F8FE;
}

.uwb-hardware-card-purple {
    background: #F5F3FF;
}

.uwb-hardware-card-green {
    background: #F4FEF4;
}

.uwb-hardware-head {
    height: 6rem;
    padding: 0 2rem;
    background-position: center;
    background-repeat: no-repeat;
    background-size: 100% 100%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
}

.uwb-hardware-head h3 {
    margin: 0;
    color: #FFFFFF;
    font-size: 1.8rem;
    font-weight: 500;
    line-height: 2.4rem;
}

/* 规格参数列表：左标签右数值 */
.uwb-hardware-specs {
    margin: 0;
    padding: 1.6rem 2rem;
    list-style: none;
    box-sizing: border-box;
}

.uwb-hardware-specs li {
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 0.8rem;
    font-size: 1.3rem;
    line-height: 2.2rem;
}

.uwb-hardware-specs li + li {
    margin-top: 0.4rem;
}

.uwb-hardware-specs li span:first-child {
    flex-shrink: 0;
    width: 6rem;
    color: #70757D;
    text-align: left;
}

.uwb-hardware-specs li span:last-child {
    flex: 1;
    color: #3B4859;
    text-align: left;
}

/* 产品卡片列表 */
.uwb-hardware-products {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    padding: 0 1.2rem 1.6rem;
    box-sizing: border-box;
}

.uwb-hardware-product {
    display: flex;
    align-items: flex-start;
    padding: 1.6rem;
    background: #FFFFFF;
    border-radius: 0.6rem;
    box-sizing: border-box;
}

.uwb-hardware-product img {
    display: block;
    flex-shrink: 0;
    width: 7.2rem;
    height: auto;
    margin-right: 1.2rem;
    object-fit: contain;
}

.uwb-hardware-product-info {
    flex: 1;
    min-width: 0;
    text-align: left;
}

.uwb-hardware-product-info h4 {
    margin: 0 0 0.6rem;
    color: #343A40;
    font-size: 1.5rem;
    font-weight: 500;
    line-height: 2.2rem;
    text-align: left;
}

.uwb-hardware-product-info p {
    margin: 0 0 1rem;
    color: #70757D;
    font-size: 1.3rem;
    line-height: 2rem;
    text-align: left;
}

.uwb-hardware-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0.6rem;
}

.uwb-hardware-tags span {
    display: inline-block;
    padding: 0.2rem 1rem;
    border: 0.1rem solid #3B7CFF;
    border-radius: 1.2rem;
    color: #3B7CFF;
    font-size: 1.2rem;
    line-height: 1.8rem;
    box-sizing: border-box;
}

/* ---------- 一站式部署工具 ---------- */
.uwb-deployment {
    background: #F4F8FE;
}

.uwb-deployment-card {
    align-items: stretch;
    padding: 3rem;
    box-sizing: border-box;
}

.uwb-deployment-img {
    display: block;
    flex: 0 0 84.8rem;
    width: 84.8rem;
    max-width: 100%;
    height: 42rem;
    align-self: flex-start;
    object-fit: contain;
}

.uwb-deployment-features {
    display: flex;
    flex: 1;
    flex-direction: column;
    justify-content: space-between;
    align-self: stretch;
    min-height: 42rem;
    padding: 0 1rem 0 3rem;
    text-align: left;
    box-sizing: border-box;
}

.uwb-deployment-item h4 {
    margin: 0 0 0.4rem;
    color: #343A40;
    font-size: 1.6rem;
    font-weight: 500;
    line-height: 2.2rem;
    text-align: left;
}

.uwb-deployment-item p {
    margin: 0;
    color: #70757D;
    font-size: 1.4rem;
    line-height: 2.2rem;
    text-align: left;
}

.uwb-deployment-item + .uwb-deployment-item {
    margin-top: 0;
}

/* ---------- UWB业务管理平台 ---------- */
.uwb-platform {
    background: #FFFFFF;
}

.uwb-platform-card {
    width: 118rem;
    max-width: 100%;
    height: 58rem;
    margin: 0 auto;
    padding: 0;
    align-items: stretch;
    overflow: hidden;
    background: #FFFFFF;
    border-radius: 1.2rem;
    box-shadow: 0 0.4rem 1rem 0.2rem rgba(224, 232, 244, 0.4);
    box-sizing: border-box;
}

.uwb-platform-img {
    display: block;
    flex: 0 0 72.5rem;
    width: 72.5rem;
    max-width: 100%;
    height: 58rem;
    object-fit: cover;
}

.uwb-platform-features {
    display: flex;
    flex: 1;
    flex-direction: column;
    justify-content: space-between;
    align-self: stretch;
    min-width: 0;
    height: 58rem;
    padding: 3rem 3rem 3rem 2.4rem;
    box-sizing: border-box;
}

.uwb-platform-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    text-align: left;
}

.uwb-platform-icon {
    display: block;
    flex-shrink: 0;
    width: 1.6rem;
    height: 1.6rem;
    margin-top: 0.3rem;
    object-fit: contain;
}

.uwb-platform-item h4 {
    margin: 0 0 0.4rem;
    color: #343A40;
    font-size: 1.6rem;
    font-weight: 500;
    line-height: 2.2rem;
    text-align: left;
}

.uwb-platform-item p {
    margin: 0;
    color: #70757D;
    font-size: 1.4rem;
    line-height: 2.2rem;
    text-align: left;
}

/* ---------- 核心优势（参考 LoRaWAN 云平台核心能力） ---------- */
.uwb-advantages {
    background: #F4F8FE;
}

.uwb-advantage-list {
    display: flex;
    flex-wrap: wrap;
    margin: -1rem;
}

.uwb-advantage-item {
    width: calc(33.333% - 2rem);
    margin: 1rem;
    padding: 3rem 2rem 2.4rem;
    border: 0.2rem solid #FFFFFF;
    border-radius: 0.8rem;
    box-sizing: border-box;
}

.uwb-advantage-item img {
    display: block;
    width: 6.4rem;
    height: 6.4rem;
    margin: 0 auto;
    object-fit: contain;
}

.uwb-advantage-item h5 {
    margin: 2rem 0 1rem;
    font-size: 1.8rem;
    font-weight: 500;
    color: #343A40;
    text-align: center;
}

.uwb-advantage-item p {
    margin: 0;
    font-size: 1.4rem;
    line-height: 2.2rem;
    text-align: left;
}

/* ---------- 应用场景（参考 LoRaWAN 应用场景） ---------- */
.uwb-scenes {
    background: #FFFFFF;
}

.uwb-scene-list {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.uwb-scene-card {
    width: 28rem;
    height: 41rem;
    overflow: hidden;
    background: #FFFFFF;
    border-radius: 0.8rem;
    box-shadow: 0 0.4rem 1rem 0.5rem rgba(224, 232, 244, 0.4);
    box-sizing: border-box;
}

.uwb-scene-cover {
    display: block;
    width: 28rem;
    height: 15rem;
    object-fit: cover;
}

.uwb-scene-body {
    padding: 2rem 2rem 2.4rem;
}

.uwb-scene-body h5 {
    margin: 0 0 1.2rem;
    font-size: 1.8rem;
    font-weight: 500;
    color: #343A40;
    line-height: 1.4;
}

.uwb-scene-body > p {
    margin: 0 0 2rem;
    font-size: 1.4rem;
    line-height: 2.2rem;
}

.uwb-scene-tags {
    margin: 0;
    padding: 0;
    list-style: none;
}

.uwb-scene-tags li {
    display: flex;
    align-items: center;
    font-size: 1.4rem;
    color: #343A40;
    line-height: 1;
}

.uwb-scene-tags li + li {
    margin-top: 1.2rem;
}

.uwb-scene-tags img {
    display: block;
    width: 1.6rem;
    height: 1.6rem;
    margin-right: 0.8rem;
    flex-shrink: 0;
}

/* ---------- 标准交付样板 ---------- */
.uwb-principle {
    background: #F4F8FE;
}

.uwb-principle-card {
    flex-direction: column;
    align-items: stretch;
    padding: 3rem 4rem;
    box-sizing: border-box;
}

.uwb-principle-subtitle {
    margin: 0 0 3.2rem;
    color: #343A40;
    font-size: 1.6rem;
    font-weight: 400;
    line-height: 2.4rem;
    text-align: left;
}

.uwb-principle-body {
    display: flex;
    align-items: stretch;
    gap: 3rem;
}

.uwb-principle-media {
    display: flex;
    flex: 0 0 63rem;
    align-items: center;
    justify-content: center;
    min-width: 0;
    box-sizing: border-box;
}

.uwb-principle-img {
    display: block;
    flex: 0 0 63rem;
    width: 63rem;
    max-width: 100%;
    height: 35.7rem;
    object-fit: contain;
}

.uwb-principle-steps {
    display: flex;
    flex: 1;
    flex-direction: column;
    justify-content: space-between;
    align-self: stretch;
    margin: 0;
    padding: 0;
    list-style: none;
    box-sizing: border-box;
}

.uwb-principle-steps li {
    display: flex;
    align-items: flex-start;
}

.uwb-principle-steps li + li {
    margin-top: 0;
}

.uwb-principle-num {
    display: block;
    flex: 0 0 6.5rem;
    width: 6.5rem;
    height: 6.5rem;
    margin-right: 1.6rem;
    object-fit: contain;
}

.uwb-principle-steps h4 {
    margin: 0 0 0.4rem;
    color: #343A40;
    font-size: 1.6rem;
    font-weight: 500;
    line-height: 2.2rem;
    text-align: left;
}

.uwb-principle-steps p {
    margin: 0;
    color: #70757D;
    font-size: 1.4rem;
    line-height: 2.2rem;
    text-align: left;
}

/* ---------- 底部咨询横幅 ---------- */
.uwb-cta {
    width: 100%;
    height: 20rem;
    background: url("../img/uwb/foot.png") no-repeat center;
    background-size: cover;
}

.uwb-cta-text h3 {
    margin: 0;
    color: #FFFFFF;
    font-size: 2.8rem;
    font-weight: 500;
    line-height: 4rem;
}

.uwb-cta-text p {
    margin: 1.2rem 0 2.4rem;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.4rem;
    line-height: 2.2rem;
    white-space: nowrap;
}

/* ---------- 中等屏幕：保持桌面布局并适当收紧图片 ---------- */
@media (max-width: 1179px) {
    .uwb-deployment-img {
        flex: 0 0 auto;
        width: 100%;
        max-width: 100%;
        height: auto;
    }

    .uwb-deployment-features {
        min-height: auto;
        padding: 2rem 0 0;
        justify-content: flex-start;
    }

    .uwb-deployment-item + .uwb-deployment-item {
        margin-top: 1.6rem;
    }

    .uwb-architecture-img {
        flex: 0 0 auto;
        width: 100%;
        max-width: 100%;
        height: auto;
    }

    .uwb-platform-card {
        width: 100%;
        height: auto;
    }

    .uwb-platform-img {
        flex: 0 0 auto;
        width: 100%;
        max-width: 100%;
        height: auto;
    }

    .uwb-platform-features {
        height: auto;
        padding: 2rem;
        justify-content: flex-start;
    }

    .uwb-platform-item + .uwb-platform-item {
        margin-top: 1.6rem;
    }

    .uwb-copy {
        padding: 3rem !important;
    }
}

/* ---------- 平板及移动端：所有多列模块改为纵向排列 ---------- */
@media (max-width: 991px) {
    .uwb-banner {
        min-height: 32rem;
        height: auto;
        padding: 4rem 0;
        background-position: center right;
    }

    .uwb-banner-text h1 {
        font-size: 2.8rem;
        line-height: 4rem;
    }

    .uwb-banner-text p {
        margin: 1.6rem 0 3rem;
        font-size: 1.4rem;
        line-height: 2.2rem;
    }

    .uwb-section-title {
        margin-bottom: 3rem;
        font-size: 2.6rem;
        line-height: 3.6rem;
    }

    .uwb-section-subtitle {
        margin-top: -2rem;
        font-size: 1.4rem;
    }

    .uwb-split-card {
        flex-direction: column;
        min-height: 0;
    }

    .uwb-deployment-img,
    .uwb-platform-img,
    .uwb-principle-img {
        width: 100%;
        height: auto;
    }

    .uwb-architecture-card {
        padding: 2rem;
    }

    .uwb-architecture-img {
        flex: none;
        width: 100%;
        max-width: 100%;
        height: auto;
        padding-right: 0;
    }

    .uwb-architecture-intro {
        width: 100%;
        min-height: auto;
        padding: 2rem 0 0;
        justify-content: flex-start;
    }

    .uwb-architecture-item + .uwb-architecture-item {
        margin-top: 2rem;
    }

    .uwb-copy {
        padding: 3rem 2rem !important;
    }

    .uwb-hardware-list,
    .uwb-advantage-list,
    .uwb-scene-list {
        flex-wrap: wrap;
    }

    .uwb-hardware-card {
        width: 100%;
        min-height: 0;
    }

    .uwb-hardware-card + .uwb-hardware-card {
        margin-top: 2rem;
    }

    .uwb-hardware-product img {
        width: 6rem;
    }

    .uwb-advantage-item {
        width: calc(50% - 2rem);
        padding: 2.4rem 1.6rem 2rem;
    }

    .uwb-scene-list {
        justify-content: center;
    }

    .uwb-scene-card {
        width: calc(50% - 1rem);
        height: auto;
        margin-bottom: 2rem;
    }

    .uwb-scene-cover {
        width: 100%;
        height: auto;
        aspect-ratio: 280 / 150;
    }

    .uwb-principle-body {
        flex-direction: column;
        gap: 2rem;
    }

    .uwb-principle-media {
        flex: 0 0 auto;
        width: 100%;
    }

    .uwb-principle-img {
        width: 100%;
        height: auto;
        aspect-ratio: 630 / 357;
    }

    .uwb-principle-subtitle {
        margin-bottom: 2rem;
        font-size: 1.4rem;
        line-height: 2.2rem;
    }

    .uwb-principle-steps {
        padding: 0;
        justify-content: flex-start;
    }

    .uwb-principle-steps li + li {
        margin-top: 1.6rem;
    }

    .uwb-principle-num {
        flex: 0 0 5.6rem;
        width: 5.6rem;
        height: 5.6rem;
        margin-right: 1.2rem;
    }

    .uwb-cta {
        min-height: 20rem;
        height: auto;
        padding: 4rem 0;
        background-position: center right;
    }

    .uwb-cta-text p {
        white-space: normal;
    }
}

/* ---------- 小屏手机：场景卡片改为单列 ---------- */
@media (max-width: 575px) {
    .uwb-scene-card {
        width: 100%;
        height: auto;
    }

    .uwb-principle-card {
        padding: 2rem;
    }
}