:root {
    --primary-color: #8257E6;
    --secondary-color: #6F48C9;
    --background-color: #F8F9FA;
    --text-color: #333;
    --text-secondary: #666666;     /* 次要文字颜色 */
    --text-light: #999999;         /* 浅色文字 */
}

/* 全局样式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.5;
    padding-top: 108px; /* 桌面端导航栏高度 */
}
a {
    text-decoration: none;
}
ul{
    padding: 0;
    margin: 0;
}
li{
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
    text-align: center;
}


/* 通用标题样式 */
.section-title {
    color: #20184E;
    font-weight: 600;
    margin-bottom: 40px;
    position: relative;
    text-align: center;
}

/* 通用图标样式 */
.contact-icon {
    width: 32px;
    height: 32px;
}

/* 通用文本样式 */
.contact-text {
    color: #20184E;
    font-size: 1.5rem;
}

.contact-section {
    padding: 125px 0 80px;
    background: white;
    position: relative;
}
.contact-section::before {
    content: '';
    position: absolute;
    top: 40%;
    background: url(../images/bg-img2.png) no-repeat bottom;
    width: 136px;
    height: 531px;
    z-index: 0;
}
.contact-section::after {
    content: '';
    position: absolute;
    top: -20%;;
    background: url(../images/bg-img3.png) no-repeat bottom right;
    width: 346px;
    height: 531px;
    z-index: 0;
    right: 0px;
    background-size: 80%;
}
/* 解决方案 */
.ong-bg::after{
    content: none;
}
.list-two{
    margin-top: 68px;
    background: url(../images/case-bg.png) no-repeat center;
    background-size: contain;
}
.border-size{
    border-bottom: solid 1px #F0F0F4;
    padding-bottom: 40px;
}
.list-two li img{
    width: 100%;
    height: 100%;
}
.list-two ul{
    display: flex;
    flex-flow: row wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 24px;
}
.list-two .logo-list {
    width: 23.4%;
    aspect-ratio: 4 / 3;
    box-shadow: 0 0 3px 3px #8828ff05;
    border-radius: 10px;
}
.pk-item{
    width: 45%;
    color: #20184E;
}
.pk-box{
    width: 100%;
    background: #ffffff;
    padding: 40px 0 0;
    border-radius: 20px;
    box-shadow: 0 0 16px 1px rgb(193 115 255 / 12%);
    color: #20184E;
}
.pk-item.active .pk-box{
    border: solid 1px var(--primary-color);
}
.title-one{
    margin-top: 40px;
}
.title-two{
    margin: 40px auto 20px;
}
.pk-box p{
    line-height: 24px;
    margin-bottom: 45px;
}
.other-btn{
    margin: 30px auto 40px;
    color: var(--text-secondary);
}
.other-btn a{
    color: var(--primary-color);
    margin-left: 8px;
}
.pk-logo{
    width: 30px;
    height: 27px;
    margin: 0 auto 28px;
}
.pk-logo img{
    width: 100%;
    height: 100%;
}
.white-bg{
    background: #fff;
}
.fd-bg{
    background: #FDFDFD;
    border: solid 1px #F0F0F4;
    border-left: 0;
    border-right: 0;
}
.pk-list .column-list{
    padding: 30px 120px;
    flex-flow: column;
}
.pk-list .column-list:last-child {
   border-radius: 0 0 20px 20px;
}
.list-two .pk-list img{
    aspect-ratio: 6 / 5;
    width: 14px;
    margin-top: 5px;
}
.list-two .pk-list li {
    display: flex;
    flex-flow: row;
    gap: 8px;
    align-items: flex-start;
    text-align: left;
    color: var(--text-light);
}
.title-three{
    margin: 60px 0 0;
    font-weight: bold;
    text-align: center;
}
.title-three span{
    color: var(--text-light);
    font-weight: normal;
    display: block;
    margin-top: 20px;
}
/* 尚未了解清楚? */
.no-bg {
    background: #F9F9FB;
    padding: 68px 0 350px;
}
.no-bg::before,.no-bg::after {
    content: none;
}
.no-bg .title-other {
    margin-bottom: 60px;
}
.computer-box{
    margin-top: 80px;
    position: relative;
}
.computer{
    aspect-ratio: 832 / 505;
    width: 60%;
    
}
.computer-text{
    color: var(--text-secondary);
    line-height: 30px;
    margin: 68px 0 20px;
    text-align: justify;
}
.computer img{
    width: 100%;
    height: 100%;
}
.computer-box-content{
    width: 60%;
    background: #fff;
    border-radius: 20px;
    box-shadow: #792dd51a 0px 2px 10px;
    padding: 40px;
    text-align: left;
    position: absolute;
    z-index: 2;
    right: 0;
    top: 40%;
}
.computer-list{
    color: #20184E;
    text-align: left;
    line-height: 32px;
    margin-bottom: 40px;
}
.computer-list li{
    display: flex;
    flex-flow: row;
    gap: 8px;
    align-items: flex-start;
}
.computer-list li img{
    aspect-ratio: 6 / 5;
    width: 24px;
    margin-top: 7px;
}
/* 会议门牌及配件 */
/* 硬件菜单横向滚动 */
.hardware-menu {
    position: relative;
    display: flex;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: smooth;
    gap: 20px;
    -webkit-overflow-scrolling: touch;
    border-bottom: 1px solid #ddd;
    justify-content: space-between;
    border-bottom: 1px solid #E1E1EB; /* 灰色分割线 */
    margin-top: 56px;
}

/* 新增选中效果 */
.hardware-menu-item.active .hardware-menu-link {
    color: #6909E1;
}
.hardware-menu-item.active {
    border-bottom: 2px solid #400E7F; /* 选中状态线条 */
}
.hardware-menu-link {
    color: #333;
    transition: color 0.3s ease;
}
.floor-padding{
    padding: 116px 0 140px;
}
.hardware-menu-item {
    flex-shrink: 0;
    width: 160px;
    transition: transform 0.3s ease;
}
.hardware-img{
    width: 160px;
    aspect-ratio: 3 / 2;
    margin-bottom: 1.5rem;
}
.hardware-menu-link img {
    width: 100%;
    height: 100%;
}

.hardware-menu-link p {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.hardware-menu-item:hover p{
    color: #400E7F;
}
.hardware-menu-item.active p{
    color: #400E7F;
}
.hardware-features{
    margin-top: 5rem;
}
.title-other{
    margin-bottom: 110px;
    color: #20184E;
    text-align: center;
    padding: 0 12%;
    line-height: 2.5rem;
}
.hardware-features{
    display: flex;
    flex-flow: row wrap;
    gap: 128px;
}
.features-left{
    width: 40%;
}
.features-right {
    width: 49%;
    text-align: left;
    padding-top: 24px;
}
.perture-big{
    width: 100%;
    aspect-ratio: 3 / 2;
    padding: 24px;
}
.perture-big img{
    width: 100%;
    height: 100%;
    box-shadow: #792dd51a 0px 2px 10px;
}
.features-right .dropdown-menu.show {
    width: 100%;
    border-color: var(--text-light);
}
.hardware-name{
    font-weight: 600;
    color: #20184E;
    position: relative;
}
.hardware-name::after{
    content: '';
    display: block;
    width: 120px;
    height: 1px;
    background: #000;
    left: 0;
    position: absolute;
    margin-top: 34px;
}
/* 组合按钮 */
.down-btn{
    display: flex;
    flex-flow: row wrap;
    gap: 24px;
}
/* 下拉框样式 */
.btn-change{
    padding: 11px 38px;
    border: solid 1px var(--text-light);
    border-radius: 10px;
    color: var(--primary-color);
    font-weight: 600;
    width: 260px;
    text-align: left;
}
.btn-check:checked+.btn, .btn.active, .btn.show, .btn:first-child:active, :not(.btn-check)+.btn:active {
    color: var(--primary-color);
    border-color: var(--primary-color);
}
.dropdown-item.active, .dropdown-item:active {
    color: var(--primary-color);
    text-decoration: none;
    background-color: var(--background-color);
}
.btn-change::after {
    display: inline-block;
    content: "";
    border-top: .3em solid;
    border-right: .3em solid transparent;
    border-bottom: 0;
    border-left: .3em solid transparent;
    right: 38px;
    position: absolute;
    margin: auto;
    top: 50%;
    bottom: 50%;
    color: var(--text-light);
}

/* 按钮样式 */
.backBtn{
    background: var(--primary-color);
    border-radius: 60px;
    padding: 12px 40px;
    color: #fff;
    font-size: 1rem;
    border: none;
    box-shadow: none;
    text-align: center;
}

.hardware-text-two{
    color: var(--text-secondary);
    line-height: 30px;
    margin: 68px 0 64px;
    text-align: justify;
}
/* 移动端适配 */
@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding: 0 30px;
    }
    .contact-section::before,.contact-section::after {
        content: none;
    }
    .backBtn{
        padding: 12px 32px;
    }
    /* 解决方案 */
    .ong-bg{
        padding: 95px 0 80px;
    }
    .pk-box {
        padding: 32px 0 0;
    }
    .border-size {
        padding-bottom: 32px;
    }
    .title-one {
        margin-top: 32px;
    }
    .title-two {
        margin: 32px auto 20px;
    }
    .pk-box p {
        margin-bottom: 40px;
    }
    .other-btn {
        margin: 16px auto 32px;
    }
    .pk-list .column-list {
        padding: 30px 90px;
        gap: 20px;
    }
    .title-three {
        margin: 32px 0 0;
    }
    .title-three span {
        margin-top: 8px;
    }
    /* 尚未了解清楚? */
    .no-bg {
        padding: 40px 0 330px;
    }
    .computer-box {
        margin-top: 62px;
    }
    .computer-box-content {
        width: 70%;
        padding: 32px;
        margin-top: 28px;
        top: 30%;
    }
    .computer-text {
        margin: 64px 0 32px;
        line-height: 32px;
    }
    .computer-list {
        line-height: 32px;
        margin-bottom: 32px;
    }
    .computer-list li img {
        width: 20px;
    }
    .no-bg .title-other{
        margin-bottom: 28px;
        line-height: 28px;
    }
    /* 会议门牌及配件 */
    .floor-padding {
        padding: 88px 0 90px;
    }
    .hardware-features {
        gap: 90px;
    }
    .section-title {
        margin-bottom: 32px;
    }
    .hardware-features{
        margin-top: 24px;
    }
    .hardware-features {
        gap: 70px;
    }
    .title-other,.no-bg .title-other{
        margin-bottom: 36px;
        line-height: 28px;
    }
    .btn-change {
        padding: 11px 32px;
        width: 170px;
    }
    .backBtn{
        padding: 12px 32px;
    }
    .hardware-name::after {
        margin-top: 32px;
    }
    .perture-big {
        aspect-ratio: 1 / 1;
    }
    .hardware-text-two {
        margin: 56px 0 84px;
    }
    
}

@media (max-width: 991px) {
    body {
        padding-top: 48px; /* 移动端导航栏高度 */
    }

    /* 联系部分适配 */
    .contact-section {
        padding: 40px 0 8px;
    }
    .section-title {
        margin-bottom: 20px;
    }
    /* 解决方案 */
    .ong-bg{
        padding: 65px 0 60px;
    }
    .pk-box {
        padding: 28px 0 0;
    }
    .border-size {
        padding-bottom: 28px;
    }
    .title-one {
        margin-top: 28px;
    }
    .title-two {
        margin: 28px auto 12px;
    }
    .pk-box p {
        margin-bottom: 32px;
    }
    .other-btn {
        margin: 16px auto 28px;
    }
    .pk-list .column-list {
        padding: 24px 52px;
        gap: 16px;
    }
    .title-three {
        margin: 28px 0 0;
    }
    .title-three span {
        margin-top: 6px;
    }
    /* 尚未了解清楚? */
    .no-bg {
        padding: 40px 0 290px;
    }
    .computer-box {
        margin-top: 42px;
    }
    .computer-box-content {
        width: 70%;
        padding: 24px;
        margin-top: 28px;
        top: 20%;
    }
    .computer-text {
        margin: 48px 0 30px;
        line-height: 28px;
    }
    .computer-list {
        line-height: 28px;
        margin-bottom: 24px;
    }
    .computer-list li img {
        width: 20px;
    }
    .no-bg .title-other{
        margin-bottom: 28px;
        line-height: 28px;
    }
    /* 会议门牌及配件 */
    .hardware-features{
        margin-top: 24px;
    }
    .hardware-features {
        gap: 70px;
    }
    .title-other{
        margin-bottom: 16px;
        line-height: 28px;
    }
    .btn-change {
        padding: 11px 32px;
        width: 170px;
    }
    .backBtn{
        padding: 12px 32px;
        font-size: 0.85rem;
    }
    .hardware-name::after {
        width: 80px;
        margin-top: 24px;
    }
    .perture-big {
        aspect-ratio: 1 / 1;
        padding: 16px;
    }
    .hardware-text-two {
        margin: 48px 0;
    }
    .hardware-menu {
        margin-top: 16px;
        margin-bottom: 60px;
    }
    
}

@media (max-width: 767px) {
    .container {
        padding: 0 30px;
    }
    .contact-content {
        position: relative;
        padding: 3rem 1rem;
    } 
    /* 解决方案 */
    .ong-bg {
        padding: 25px 0 40px;
    } 
    .list-two {
        margin-top: 32px;
        background: none;
    }
    .list-two ul {
        flex-flow: column;
        gap: 40px;
    }
    .pk-item {
        width: 100%;
    }
    .pk-box {
        padding: 24px 0 0;
    }
    .pk-logo {
        margin: 0 auto 16px;
    }
    .border-size {
        padding-bottom: 16px;
    }
    .title-one {
        margin-top: 24px;
    }
    .title-two {
        margin: 24px auto 8px;
    }
    .pk-box p {
        margin-bottom: 24px;
    }
    .other-btn {
        margin: 8px auto 24px;
    }
    .pk-list .column-list {
        padding: 20px 58px;
        gap: 16px;
    }
    .title-three {
        margin: 14px 0 0;
    }
    .title-three span {
        margin-top: 2px;
    }
    /* 尚未了解清楚? */
    .no-bg {
        padding: 40px 0 60px;
    }
    .computer-box {
        margin-top: 30px;
    }
    .computer {
        width: 100%;
    }
    .computer-box-content {
        width: 100%;
        padding: 24px;
        margin-top: 28px;
        position: relative;
    }
    .computer-text {
        margin: 32px 0 20px;
        line-height: 24px;
    }
    .computer-list {
        line-height: 28px;
        margin-bottom: 24px;
    }
    .computer-list li img {
        width: 20px;
    }
    /* 会议门牌及配件 */
    .hardware-menu {
        gap: 16px;
        margin-top: 32px;
        margin-bottom: 40px;
    }
    .hardware-img {
        margin-bottom: 0.75rem;
    }
    .hardware-menu-link p {
        margin-bottom: 0.75rem;
    }
    .hardware-features{
        margin-top: 0;
        gap: 20px;
    }
    .title-other,.no-bg .title-other{
        margin-bottom: 16px;
        line-height: 28px;
    }
    .btn-change {
        padding: 4px 24px;
        width: 160px;
    }
    .backBtn{
        padding: 4px 24px;
        font-size: 0.85rem;
    }
    .features-left{
        width: 100%;
    }
    .features-right {
        width: 100%;
        padding-top: 0;
    }
    .perture-big {
        width: 100%;
        padding: 16px;
    }
    
    .hardware-name::after {
        width: 80px;
        margin-top: 1rem;
    }

    .hardware-text-two {
        line-height: 28px;
        margin: 24px 0 40px;
    }
}