.banner-wrap {
    background: url('/frontend/web/image/product/power-manage/banner.png') no-repeat center;
    background-size: cover;
}

.banner-wrap .banner>h1 {
    text-align: left;
    color: rgba(47, 45, 45, 1);
    font-size: 32px;
    line-height: 1.4;
    font-weight: bold;
    margin-bottom: 20px;
}

.banner-wrap .banner>h3 {
    text-align: left;
    color: rgba(137, 142, 156, 1);
    font-size: 16px;
    line-height: 1.8;
}

.tongdian .desc h2 {
    margin-top: 0;
}

.tongdian {
    padding-top: 100px;
    padding-bottom: 60px;
}

.tongdian .desc .num-ac {
    padding-top: 25px;
    padding-right: 20px;
    width: 478px;
    height: 132px;
    background: url('/frontend/web/image/product/qiyebangong/c_bg.png') no-repeat top left;
}

.tongdian .desc .dditem {
    width: 450px;
    box-sizing: border-box;
    margin-bottom: 20px;
    padding: 25px 40px;
    border-radius: 8px;
    cursor: pointer;
    /* box-shadow: 0px 0px 8px 3px rgba(0, 0, 0, 0.02); */
    background: #fff;
    transition: all 0.3s;
}

.tongdian .desc .dditem.active {
    box-shadow: 0px 0px 20px 5px rgba(0, 0, 0, 0.08);
}

.tongdian .desc .dditem h4 {
    margin-bottom: 10px;
}

.tongdian .desc .dditem h4 span:first-child {
    display: inline-block;
    margin-right: 16px;
    width: 30px;
    height: 30px;
    text-align: center;
    font-size: 16px;
    line-height: 30px;
    color: #262626;
    border: 1px solid #262626;
    border-radius: 15px;
    float: left;
}

.tongdian .desc .dditem.active h4 span:first-child {
    color: #fff;
    border: none;
    background: url('/frontend/web/image/product/index/num_ac_bg.png') no-repeat top left;
}

.tongdian .desc .dditem.active p {
    display: block;
    margin-left: 46px;
    margin-top: 10px;
}

.tongdian .desc .dditem p {
    display: none;
    font-size: 14px;
    color: #8c8c8c;
    line-height: 1.6;
}

.tongdian .r-img {
    padding-right: 50px;
    float: right;
    margin-top: -30px;
}

.tongdian .desc {
    float: left;
    width: 480px;
}

.tongdian .r-img img {
    max-width: 100%;
}


/* part2 */
.part2 {
    width: 100% !important;
    padding: 100px 0 100px 0 !important;
    margin: 0 !important;
    box-sizing: content-box;
}


.part2 h1 {
    font-size: 40px;
    color: #262626;
    margin-bottom: 20px;
}

.flex-layout {
    display: flex;
    width: 1200px;
    height: 500px;
    margin-top: 40px;
    margin: auto;
}

.flex-layout .left-img {
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}

.flex-layout .left-img video {
    width: 100%;
    object-fit: contain;
    display: block;
}

.flex-layout .right-features {
    width: 620px;
    height: 500px;
    background: transparent;
    display: flex;
    justify-content: center;
    align-items: center;
    box-sizing: border-box;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 0;
    width: 100%;
    margin-left: 20px;
}

.feature-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 20px;
    border-right: 1px solid rgba(51, 170, 255, 0.2);
    border-bottom: 1px solid rgba(51, 170, 255, 0.2);
    padding: 60px 10px;
    height: 100%;
}

.feature-item:nth-child(2n) {
    border-right: none;
}

.feature-item:nth-child(n+3) {
    border-bottom: none;
}

.feature-item .feature-icon {
    width: 32px;
    margin-left: 12px;
}

.feature-item span {
    font-size: 16px;
    color: #595959;
}


/* part3 */
.part3-cards {
    padding: 100px 0;
}

.part3-ai-section {
    background: linear-gradient(180deg, rgba(232, 246, 255, 1) 0%, rgba(255, 255, 255, 0.35) 132.547%);
}

.part3-main-title {
    text-align: center;
    font-size: 36px;
    color: #262626;
    margin-bottom: 80px;
    line-height: 1.4;
}

.ai-operation-wrapper,
.ai-maintenance-wrapper,
.ai-analysis-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 60px;
}

.ai-analysis-wrapper:last-of-type {
    margin-bottom: 0;
}

.content-left,
.content-right {
    width: 48%;
}

.content-left h3,
.content-right h3 {
    color: rgba(40, 41, 43, 1);
    font-family: Source Han Sans CN;
    font-style: Medium;
    font-size: 18px;
    font-weight: 500;
    letter-spacing: 5px;
    margin-bottom: 18px;
    position: relative;
    margin-left: 24px;
}

.check-content {
    width: 320px;
    color: rgba(95, 104, 129, 1);
    font-size: 16px;
    line-height: 28px;
    letter-spacing: 2px;
}



.content-left h3::before,
.content-right h3::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 3px;
    width: 8px;
    height: 8px;
    background: #33AAFF;
    border-radius: 50%;
}

.ai-operation-wrapper img,
.ai-maintenance-wrapper img,
.ai-analysis-wrapper img {
    width: 100%;
    border-radius: 8px;
}


/* part4 values */
.part4-values {
    padding: 80px 0 120px;
    background: #fff;
}

.part4-main-title {
    text-align: center;
    font-size: 40px;
    color: #262626;
    margin-bottom: 24px;
}

.part4-subtitle {
    text-align: center;
    font-size: 16px;
    color: #8c8c8c;
    margin-bottom: 80px;
}

.values-grid {
    display: flex;
    justify-content: space-between;
    gap: 30px;
}

.value-item {
    flex: 1;
    background: #fff;
    border-radius: 12px;
    padding: 0 0 40px;
    text-align: center;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    transition: all 0.3s;
    overflow: visible;
}

.value-item:hover {
    box-shadow: 0 12px 36px rgba(51, 170, 255, 0.12);
    transform: translateY(-5px);
}

.value-icon-wrap {
    background: rgba(239, 249, 255, 1);
    border-radius: 12px 12px 0 0;
    padding: 24px;
    overflow: visible;
    position: relative;
}

.value-icon-wrap img {
    width: 160px;
    transform: scale(1.15);
    position: relative;
    z-index: 1;
    margin-top: -56px;
}

.value-item h4 {
    font-size: 18px;
    color: #262626;
    margin: 16px 0;
    padding: 0 16px;
}

.value-item p {
    font-size: 14px;
    color: #8c8c8c;
    line-height: 1.6;
    padding: 0 16px;
}

.cross-bg {
    background: linear-gradient(180deg, #F5FBFF 0%, rgba(255, 255, 255, 0.35) 132%);
}