/* LoRaWAN 页顶部 Banner
 * 设计稿高度 450px；站点 html { font-size: 62.5% }，换算 1rem=10px → 45rem
 */
.lorawan-banner {
    width: 100%;
    height: 45rem;
    background: url(../img/loraWan_bg.png) no-repeat;
    background-size: 100% 100%;
}

.lorawan-banner-text {
    max-width: 52rem;
}

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

.lorawan-banner-text p {
    margin: 2rem 0 4rem;
    font-size: 1.6rem;
    font-weight: 400;
    color: #70757D;
    line-height: 2.6rem;
}

/* ---------- 标准化四层物联网架构 ---------- */
/* 标题/副标题在浅蓝底；说明文案与架构图同层白底卡片 */
.lorawan-arch {
    background-color: #F4F8FE;
}

.lorawan-arch > h2.padding-b-40 {
    padding-bottom: 4rem;
}

.lorawan-arch-sub {
    margin: 0 auto 3rem;
    max-width: 80rem;
    font-size: 1.6rem;
    font-weight: 400;
    color: #70757D;
    line-height: 2.4rem;
}

.lorawan-arch-card {
    background: #FFFFFF;
    border-radius: 0.8rem;
    padding: 3rem 4rem;
}

/* 文案与架构图同宽同对齐（展示宽 1140px → 114rem） */
.lorawan-arch-desc,
.lorawan-arch-img {
    display: block;
    width: 114rem;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
}

.lorawan-arch-desc {
    margin-bottom: 3rem;
    font-size: 1.4rem;
    line-height: 2.6rem;
    text-align: left;
}

.lorawan-arch-desc p + p {
    margin-top: 0.8rem;
}

/* 设计稿展示尺寸 1140px*512px → 114rem*51.2rem（原图 2 倍） */
.lorawan-arch-img {
    height: 51.2rem;
    object-fit: contain;
}

/* ---------- 产品矩阵 ---------- */
/* 区块白底；仅圈住图片的面板为 #F4F8FE */
.lorawan-matrix {
    background-color: #FFFFFF;
}

.lorawan-matrix-panel {
    background-color: #F4F8FE;
    border-radius: 0.8rem;
    padding: 3rem;
}

/* 设计稿 1120px*642px → 112rem*64.2rem */
.lorawan-matrix-img {
    display: block;
    width: 112rem;
    max-width: 100%;
    height: 64.2rem;
    margin: 0 auto;
    object-fit: contain;
}

/* ---------- LoRa 云平台核心能力 ---------- */
.lorawan-capability {
    background-color: #F4F8FE;
}

.lorawan-capability-list {
    display: flex;
    flex-wrap: wrap;
    margin: -1rem;
}

.lorawan-capability-item {
    width: calc(25% - 2rem);
    margin: 1rem;
    padding: 3rem 2rem 2.4rem;
    border-radius: 0.8rem;
    border: 2px solid #FFFFFF; /* 设计稿白色描边框 */
    box-sizing: border-box;
}

.lorawan-capability-item img {
    display: block;
    width: 6.4rem;
    height: 6.4rem;
    margin: 0 auto;
}

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

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

/* ---------- 多端应用展示 ---------- */
.lorawan-apps {
    background-color: #FFFFFF;
}

.lorawan-apps-item {
    display: flex;
    align-items: stretch;
    overflow: hidden;
    height: 37rem; /* 370px */
    background: #FFFFFF;
    border-radius: 1.2rem;
    box-shadow: 0 0.4rem 1.6rem rgba(59, 124, 255, 0.08);
}

.lorawan-apps-item + .lorawan-apps-item {
    margin-top: 3rem;
}

.lorawan-apps-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 4rem 5rem;
    box-sizing: border-box;
}

.lorawan-apps-icon {
    display: block;
    width: 4.8rem;
    height: 4.8rem;
    margin-bottom: 2rem;
}

.lorawan-apps-text h5 {
    margin: 0 0 1.6rem;
    font-size: 2.4rem;
    font-weight: 500;
    color: #343A40;
    line-height: 1.4;
}

.lorawan-apps-text p {
    margin: 0;
    max-width: 42rem;
    font-size: 1.4rem;
    line-height: 2.4rem;
}

/* 大图展示尺寸 660px*370px → 66rem*37rem */
.lorawan-apps-img {
    display: block;
    width: 66rem;
    height: 37rem;
    flex-shrink: 0;
    object-fit: cover;
}

/* ---------- 应用场景 ---------- */
.lorawan-scene {
    background-color: #F4F8FE;
}

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

/* 卡片 280px*410px → 28rem*41rem */
.lorawan-scene-card {
    width: 28rem;
    height: 41rem;
    background: #FFFFFF;
    box-shadow: 0px 4px 10px 5px rgba(224, 232, 244, 0.4);
    border-radius: 0.8rem;
    overflow: hidden;
    box-sizing: border-box;
}

/* 大图 280px*150px → 28rem*15rem */
.lorawan-scene-cover {
    display: block;
    width: 28rem;
    height: 15rem;
    object-fit: cover;
}

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

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

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

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

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

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

/* 小图标 16px → 1.6rem */
.lorawan-scene-tags img {
    display: block;
    width: 1.6rem;
    height: 1.6rem;
    margin-right: 0.8rem;
    flex-shrink: 0;
}

/* ---------- 个性化定制服务 ---------- */
.lorawan-custom {
    background-color: #FFFFFF;
}

.lorawan-custom-list {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

/* 卡片 580px*340px → 58rem*34rem */
.lorawan-custom-card {
    width: 58rem;
    height: 34rem;
    border-radius: 0.8rem;
    overflow: hidden;
    box-sizing: border-box;
}

.lorawan-custom-card-blue {
    background: #F4F8FE;
}

.lorawan-custom-card-green {
    background: #F4FEF4;
}

/* 顶栏底图 580px*60px → 58rem*6rem */
.lorawan-custom-banner {
    width: 58rem;
    height: 6rem;
    background-repeat: no-repeat;
    background-size: 100% 100%;
    background-position: center;
    display: flex;
    align-items: center;
    padding-left: 2.4rem;
    box-sizing: border-box;
    font-size: 2rem;
    font-weight: 500;
    color: #FFFFFF;
    line-height: 1;
}

.lorawan-custom-items {
    margin: 0;
    padding: 2.4rem 2.4rem 0;
    list-style: none;
}

.lorawan-custom-items li {
    display: flex;
    align-items: flex-start;
}

.lorawan-custom-items li + li {
    margin-top: 1.6rem;
}

/* 小图标 20px → 2rem */
.lorawan-custom-items img {
    display: block;
    width: 2rem;
    height: 2rem;
    margin: 0.2rem 1rem 0 0;
    flex-shrink: 0;
}

.lorawan-custom-items p {
    margin: 0;
    font-size: 1.4rem;
    line-height: 2.2rem;
    color: #70757D;
}

.lorawan-custom-items p span {
    font-weight: 500;
    color: #343A40;
}

/* ---------- 免费获取方案 CTA ---------- */
/* 原图 3840×400（2 倍），展示高度约 200px → 20rem */
.lorawan-cta {
    width: 100%;
    height: 20rem;
    background: url(../img/loRaWan12.png) no-repeat center;
    background-size: cover;
}

.lorawan-cta-text h3 {
    margin: 0;
    font-size: 2.8rem;
    font-weight: 500;
    color: #FFFFFF;
    line-height: 1.4;
}

.lorawan-cta-text p {
    margin: 1.2rem 0 2.4rem;
    font-size: 1.4rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
    line-height: 2.2rem;
    white-space: nowrap;
}

/* 中等屏：背景 cover，避免插画被压扁 */
@media (max-width: 1179px) {
    .lorawan-banner {
        background-size: cover;
        background-position: center right;
    }
}

/* 移动端 */
@media (max-width: 991px) {
    .lorawan-banner {
        height: auto;
        min-height: 32rem;
        padding: 4rem 0;
        background-position: center;
    }

    .lorawan-banner-text {
        max-width: 100%;
    }

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

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

    .lorawan-arch-card {
        padding: 3rem 2rem 2rem;
    }

    .lorawan-arch-sub {
        font-size: 1.4rem;
        line-height: 2.2rem;
    }

    .lorawan-arch-desc {
        margin: 2rem auto 2.4rem;
        font-size: 1.3rem;
        line-height: 2.2rem;
    }

    .lorawan-arch-img {
        width: 100%;
        height: auto;
    }

    .lorawan-matrix-panel {
        padding: 2rem;
    }

    .lorawan-matrix-img {
        width: 100%;
        height: auto;
    }

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

    .lorawan-apps-item,
    .lorawan-apps-item-reverse {
        flex-direction: column;
        height: auto;
    }

    .lorawan-apps-item + .lorawan-apps-item {
        margin-top: 2rem;
    }

    .lorawan-apps-text {
        order: 2;
        padding: 2.4rem 2rem 3rem;
    }

    .lorawan-apps-img {
        order: 1;
        width: 100%;
        height: auto;
    }

    .lorawan-apps-text h5 {
        font-size: 2rem;
    }

    .lorawan-apps-text p {
        max-width: none;
    }

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

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

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

    .lorawan-custom-list {
        justify-content: center;
    }

    .lorawan-custom-card {
        width: 100%;
        height: auto;
        margin-bottom: 2rem;
    }

    .lorawan-custom-banner {
        width: 100%;
    }

    .lorawan-custom-items {
        padding: 2rem 2rem 2.4rem;
    }

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

    .lorawan-cta-text h3 {
        font-size: 2.2rem;
    }

    .lorawan-cta-text p {
        margin-bottom: 2rem;
        white-space: normal;
    }
}