* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 1rem;
}

body {
    background: #FFFFFF;
    font-family: 'Microsoft Yahei', 'Courier New', Courier, monospace;
}

ul li {
    list-style: none;
}

.main {
    width: 100%;
}

.top {
    width: 100%;
    height: 3.75rem;
    background: #d4e9fd;
}

.container {
    width: 75rem;
    margin: 0 auto;
}

.top .container {
    height: 3.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.top .logo img {
    width: 9.375rem;
}

.top .nav ul {
    display: flex;
}

.top .nav ul li {
    margin: 0 1.25rem;
}

.top .nav ul li a {
    font-size: 1.125rem;
    font-weight: 500;
    color: #363636;
    text-decoration: none;
    position: relative;
}

.top .nav ul li a:hover::before {
    position: absolute;
    content: '';
    width: 100%;
    height: .125rem;
    bottom: -0.3125rem;
    background: #00a0e9;
    transition: all .3s;
}

.top .nav ul li .link::before {
    position: absolute;
    content: '';
    width: 100%;
    height: .125rem;
    bottom: -0.3125rem;
    background: #00a0e9;
}

.top .login {
    width: 6.25rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #00a0e9;
    color: #FFFFFF;
    font-size: .875rem;
    border-radius: 1.25rem;
}

.top .login a {
    text-decoration: none;
    color: #FFFFFF;
    font-size: 1rem;
    margin: 0 .3125rem;
}

.banner {
    width: 100%;
    height: 50rem;
    background-color: #c2e0fa;
    background-image: url("../images/banner.jpg");
    background-repeat: no-repeat;
    background-position: right;
}

.banner h3 {
    font-size: 3.5rem;
    color: #000000;
    padding: 10rem 0 7rem 0;
    letter-spacing: .3125rem;
}

.tab {
    width: 40rem;
    margin: 0 auto;
    background: rgb(255, 255, 255, 0.6);
    padding: 2rem;
    border-radius: 2rem;
}

.tabs-header {
    display: flex;
    justify-content: space-between;
    /* margin-bottom: 2rem; */
    flex-wrap: wrap;
}

.tab-btn {
    padding: .5rem 1.5rem;
    /* margin: 0 2rem .5rem; */
    background: #FFFFFF;
    border: none;
    border-radius: .5rem;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.tab-btn.active,
.tab-btn:hover {
    background: #00a0e9;
    color: white;
}

.tabs-content {
    min-height: 5rem;
}

.tab-pane {
    display: none;
    padding: 1rem 0;
    animation: fadeIn 0.3s ease-in-out;
}

.tab-pane ul {
    display: flex;
    justify-content: space-between;
}

.tab-pane ul li .title {
    background: #FFFFFF;
    width: 5.5rem;
    padding: .3rem;
    text-align: center;
    margin-bottom: .5rem;
    border-radius: 1rem;
    font-size: .75rem;
}

.tab-pane ul li .content {
    background: #FFFFFF;
    border: .0625rem solid #000000;
}

.tab-pane ul li .content span {
    display: inline-block;
    font-size: .75rem;
    color: #666666;
    background-color: #FFFFFF;
}

.tab-pane ul li .content select {
    border: 0;
    outline: none;
    width: 5.5rem;
    height: 1.5rem;
    color: #666;
    padding-left: .0625rem;
}

.tab-pane ul li .content input[type="number"] {
    border: 0;
    outline: none;
    width: 2.5rem;
    height: 1.5rem;
    color: #666;
    padding-left: .0625rem;
    text-align: center;
    font-size: .75rem;
}

.tab-pane ul li .content input::placeholder {
    background: #FFFFFF;
}

.tab-pane ul li .content .number-input {
    width: 5.5rem !important;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(.625rem);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.banner .btn {
    display: flex;
    justify-content: center;
    margin-top: 3rem;
}

.banner .btn button {
    width: 10.25rem;
    height: 3rem;
    background: #00a0e9;
    color: #FFFFFF;
    font-size: 1.5rem;
    border-radius: 1.25rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 .25rem .9375rem rgba(0, 160, 233, 0.3);
}

.banner .btn button:hover {
    transform: translateY(-0.1875rem) scale(1.05);
    box-shadow: 0 .5rem 1.5625rem rgba(0, 160, 233, 0.5);
}

.banner .btn button:active {
    transform: translateY(0) scale(0.98);
    box-shadow: 0 .125rem .625rem rgba(0, 160, 233, 0.3);
}

section .container {
    width: 75rem;
    margin: 0 auto;
}

section h3 {
    font-size: 1.5rem;
    color: #000000;
    padding: 2rem 0;
    text-align: center;
}

.panel {
    width: 100%;
    background: #F0F0F0;
}

.panel a {
    text-decoration: none;
}

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

.nav-item {
    width: 17.5rem;
    text-align: center;
    background: #FFFFFF;
    padding: 1rem;
    border-radius: 1.25rem;
    position: relative;
    overflow: hidden;
    z-index: 1;
    cursor: pointer;
    transition: all 0.5s ease;
}

.nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, #03a2ea, #57cafe);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.nav-item:hover::before {
    opacity: 1;
}

.nav-item:hover {
    transform: translateY(-0.2rem);
    box-shadow: 0 0 .625rem rgba(0, 0, 0, 0.2);
}

.nav-item:hover h3,
.nav-item:hover p {
    color: #FFFFFF;
}

.nav-item:hover .arrow {
    background-color: #FFFFFF;
    background-image: url(../images/right1.png);
}

.nav-item h3 {
    font-size: 1.2rem;
    color: #000000;
    padding: 0;
    text-align: left;
    font-weight: 400;
}

.nav-item p {
    font-size: .875rem;
    color: #aaaaaa;
    text-align: left;
    margin-top: .5rem;
}

.nav-item .arrow {
    margin-top: 1.5rem;
    display: block;
    width: 1.5rem;
    height: 1.5rem;
    background-color: #00a0e9;
    background-image: url(../images/right.png);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: .75rem;
    border-radius: 50%;
    float: right;
    text-align: center;
    line-height: 1.5rem;
}

.product-section {
    display: flex;
    justify-content: space-between;
    padding: 2rem 0;
}

.product-card {
    width: 17.5rem;
    text-align: center;
    background: #FFFFFF;
    padding: 1rem;
    border-radius: 1.25rem;
    cursor: pointer;
    padding-bottom: 3rem;
    transition: all 0.5s ease;
}

.product-card h4 {
    font-size: 1.2rem;
    color: #000000;
    padding: 0;
    text-align: center;
    font-weight: 400;
    margin: 1rem 0;
}

.product-card a {
    display: inline-block;
    text-decoration: none;
    color: #FFFFFF;
    font-size: 1rem;
    font-weight: 400;
    background: #00a0e9;
    padding: .5rem 1rem;
    border-radius: 1rem;
    margin-top: 1rem;
}

.product-card:hover {
    transform: translateY(-0.2rem);
    box-shadow: 0 0 .625rem rgba(0, 0, 0, 0.05);
}

.product-banner {
    width: 55.8333rem;
    /* height: 30rem; */
    background: #FFFFFF;
    padding: 1rem;
    border-radius: 1.25rem;
}

.swiper {
    width: 100%;
    height: 100%;
}

.swiper-slide {
    text-align: center;
    font-size: 1.125rem;
    background: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
}

.swiper-slide img {
    max-width: 100%;
    max-height: 100%;
}

.process {
    background: #FFFFFF url(../images/process.png) no-repeat center center;
    background-size: 40%;
    background-position: center 4.375rem;
    padding: 0 0 3rem 0;
}

.process h3 {
    margin-bottom: 1rem;
}

.process-container {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 3.75rem;
    height: 18.75rem;
    /* 给上下文字留出空间 */
}

/* 中间贯穿的蓝色横线 */
.main-line {
    position: absolute;
    top: calc(50% - .125rem);
    left: 8.75rem;
    right: 0;
    height: .25rem;
    background-color: #0099de;
    z-index: 1;
    /* 解决像素对齐问题 */
    box-sizing: border-box;
}

/* 轨道末尾的小圆点 */
.main-line::after {
    content: '';
    position: absolute;
    right: -0.9375rem;
    top: 50%;
    transform: translateY(-50%);
    width: .75rem;
    height: .75rem;
    border: .25rem solid #0099de;
    background: #fff;
    border-radius: 50%;
}

/* 单个步骤节点 */
.step {
    position: relative;
    z-index: 2;
    width: 5.3125rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* 圆圈图标容器 */
.icon-circle {
    width: 5.3125rem;
    height: 5.3125rem;
    background: linear-gradient(135deg, #42c1f3, #0092d8);
    border-radius: 50%;
    border: .0625rem solid #fff;
    box-shadow: 0 .25rem .625rem rgba(0, 146, 216, 0.3);
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 2.25rem;
}

.icon-circle img {
    width: 2.8125rem;
    height: 2.8125rem;
    filter: brightness(0) invert(1);
}

/* 文字内容容器 */
.info {
    position: absolute;
    width: 12.5rem;
    left: 4.375rem;
    /* 偏移量，形成L型视觉 */
}

.info .en {
    color: #999;
    font-size: .75rem;
    margin-bottom: .125rem;
}

.info .zh {
    color: #333;
    font-size: 1rem;
    font-weight: 600;
}

/* 引导短线 (黑色L型线) */
.guide-line {
    position: absolute;
    width: .0625rem;
    background-color: #999;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

/* 奇数项：文字在下方 */
.step-down .info {
    top: 8.4375rem;
}

.step-down .guide-line {
    height: 4.375rem;
    top: 5.625rem;
    right: 50%;
}

.step-down .guide-line::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: .9375rem;
    height: .0625rem;
    background: #999;
    box-sizing: border-box;
}

.step-down .guide-line::before {
    content: '';
    position: absolute;
    bottom: -0.1875rem;
    left: .9375rem;
    width: .5rem;
    height: .5rem;
    border-radius: 50%;
    background: #999;
}

/* 偶数项：文字在上方 */
.step-up .info {
    bottom: 8.4375rem;
}

.step-up .guide-line {
    height: 4.375rem;
    bottom: 5.625rem;
    right: 50%;
}

.step-up .guide-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: .9375rem;
    height: .0625rem;
    background: #999;
    box-sizing: border-box;
}

.step-up .guide-line::before {
    content: '';
    position: absolute;
    top: -0.1875rem;
    left: .9375rem;
    width: .5rem;
    height: .5rem;
    border-radius: 50%;
    background: #999;
}

/* 立即下单按钮 */
.btn-container {
    display: flex;
    justify-content: center;
    margin-top: 3.75rem;
}

.order-button {
    background-color: #0099de;
    color: white;
    padding: .75rem 1.75rem;
    border-radius: 3.125rem;
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: background 0.3s;
    border: none;
    cursor: pointer;
}

.order-button:hover {
    background-color: #007bb5;
}

.order-button span {
    margin-left: .9375rem;
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.order-button:hover span {
    transform: translateX(.625rem);
}

.case,
.adv {
    background: #F0F0F0;
}

.card-row {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0 2rem 0;
}

.card {
    width: 17.5rem;
    background-color: #ffffff;
    border-radius: 1.25rem;
    padding: 2.5rem 1.875rem;
    box-shadow: 0 .25rem 1.25rem rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: all 0.3s ease;
    cursor: pointer;
    border: .0625rem solid #eee;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1.875rem;
}

.card-header .icon {
    margin-right: .625rem;
}
.card-header .icon1 {
    display: inline-block; 
    width: 26px;
    height: 26px;
    background: url(../images/m1.png) no-repeat center center;
    background-size: 100% 100%;
}

.card-header .icon2 {
    display: inline-block; 
    width: 26px;
    height: 26px;
    background: url(../images/z1.png) no-repeat center center;
    background-size: 100% 100%;
}
.card-header .icon3 {
    display: inline-block; 
    width: 26px;
    height: 26px;
    background: url(../images/j1.png) no-repeat center center;
    background-size: 100% 100%;
}
.card-header .icon4 {
    display: inline-block; 
    width: 26px;
    height: 26px;
    background: url(../images/t1.png) no-repeat center center;
    background-size: 100% 100%;
}
.card-list {
    list-style: none;
    text-align: left;
    width: 100%;
    margin-bottom: 2.5rem;
    flex-grow: 1;
}

.card-list li {
    position: relative;
    padding-left: 2.25rem;
    margin-bottom: .3125rem;
    font-size: 1rem;
    color: #999;
    line-height: 1.6;
}

.card-list li::before {
    content: "●";
    position: absolute;
    left: 1.25rem;
    color: inherit;
    font-size: .75rem;
    top: .125rem;
}

.order-btn {
    width: 10rem;
    height: 3.125rem;
    background-color: #eee;
    color: #999;
    border-radius: 1.875rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: bold;
    text-decoration: none;
    transition: all 0.3s ease;
}

.card:hover {
    background: linear-gradient(180deg, #42c6f6 0%, #0099de 100%);
    transform: translateY(-0.3125rem);
    box-shadow: 0 .625rem 1.875rem rgba(0, 153, 222, 0.3);
}

.card:hover .icon1 {
    display: inline-block; 
    background: url(../images/m2.png) no-repeat center center;
    background-size: 100% 100%;
}
.card:hover .icon2 {
    display: inline-block; 
    background: url(../images/z2.png) no-repeat center center;
    background-size: 100% 100%;
}
.card:hover .icon3 {
    display: inline-block; 
    background: url(../images/j2.png) no-repeat center center;
    background-size: 100% 100%;
}
.card:hover .icon4 {
    display: inline-block; 
    background: url(../images/t2.png) no-repeat center center;
    background-size: 100% 100%;
}

.card:hover .card-header,
.card:hover .card-list li {
    color: #ffffff;
}

.card:hover .order-btn {
    background-color: #ffffff;
    color: #0099de;
}

.order-btn span {
    margin-left: .5rem;
}

.case {
    padding-bottom: 3rem;
}

.showcase-grid {
    display: grid;
    grid-template-columns: 17.5rem 1fr 17.5rem;
    grid-template-rows: repeat(2, 12.5rem);
    gap: .9375rem;
}

.showcase-item {
    background: #fff;
    border-radius: .9375rem;
    overflow: hidden;
    position: relative;
    border: .0625rem solid #eee;
    transition: all 0.3s ease;
}

/* 左侧Logo区域 */
.item-logo {
    grid-row: span 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1.25rem;
}

.item-logo img {
    width: 11.25rem;
}

/* 中间长图区域 */
.item-mid-top {
    position: relative;
}

.item-mid-bottom {}

/* 右侧长图 */
.item-side {
    grid-row: span 2;
}

.showcase-item img {
    width: 100%;
}

/* 轮播外层容器 */
.comment-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2.5rem;
    /* 固定高度 */
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    overflow: hidden;
    /* 隐藏超出部分 */
}

/* 轮播列表容器 */
.comment-list {
    display: flex;
    flex-direction: column;
    animation: scroll-up 9s infinite ease-in-out;
    /* 3条评价，每条停留约3秒 */
}

/* 单条评价样式 */
.comment-item {
    height: 2.5rem;
    /* 必须与外层高度一致 */
    display: flex;
    align-items: center;
    gap: .625rem;
    padding: 0 .9375rem;
    font-size: .875rem;
    white-space: nowrap;
}

.user-icon {
    background: #fff;
    color: #333;
    border-radius: 50%;
    width: 1.25rem;
    height: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .75rem;
}

.user-id {
    color: #ccc;
}

/* 轮播动画核心代码 */
@keyframes scroll-up {

    0%,
    25% {
        transform: translateY(0);
    }

    /* 第一条停留 */
    33%,
    58% {
        transform: translateY(-2.5rem);
    }

    /* 第二条停留 */
    66%,
    91% {
        transform: translateY(-5rem);
    }

    /* 第三条停留 */
    100% {
        transform: translateY(-7.5rem);
    }

    /* 瞬间回到复制的第一条 */
}

.showcase-item:hover .comment-list {
    animation-play-state: paused;
}

.showcase-item:hover {
    box-shadow: 0 .5rem 1.25rem rgba(0, 0, 0, 0.15);
    transform: translateY(-0.3125rem);
    z-index: 10;
}

.about {
    background: url(../images/about_bg.jpg) no-repeat center center;
    background-size: cover;
    color: #FFFFFF;
    padding: 2rem 0 5rem 0;
    position: relative;
}

.about_bg {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(4, 162, 234, 0.7);
    z-index: 1;
}

.about h3 {
    font-size: 2rem;
    color: #FFFFFF;
    padding: 3rem 0 0.625rem 0;
    position: relative;
    z-index: 2;
}

.about h5 {
    font-size: 1.5rem;
    color: #FFFFFF;
    margin-bottom: 0rem;
    text-align: center;
    padding-bottom: 0.625rem;
    position: relative;
    z-index: 2;
}

.about p {
    font-size: 0.875rem;
    color: #FFFFFF;
    margin-bottom: 0rem;
    text-align: center;
    position: relative;
    z-index: 2;
}

.service {
    background: #FFFFFF;
}

.service h3 {
    padding: 4rem 0 0.625rem 0;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3.75rem 1.25rem;
    margin-top: 2.5rem;
}

.service-item {
    text-align: center;
    padding: 1.25rem;
    transition: transform 0.3s;
}

.service-icon img {
    width: 3.75rem;
    margin-bottom: 1.25rem;
}

.service-item h4 {
    font-size: 1.5rem;
    margin-bottom: .9375rem;
    color: #000;
    font-weight: 400;
}

.service-item p {
    font-size: .875rem;
    color: #999;
    font-weight: 400;
}

.choose {
    background: url(../images/choose_bg.png) no-repeat center center;
    background-size: cover;
    padding: 5rem 0;
    position: relative;
    z-index: 2;
    margin-top: 2rem;
}

.choose h3 {
    color: #FFFFFF;
}

.choose_btn {
    display: flex;
    justify-content: center;
}

.choose_btn .submit-btn {
    background: #FFFFFF;
    padding: .75rem 2.75rem;
    border-radius: 3.125rem;
    font-size: 1rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
    cursor: pointer;
    margin-top: 1rem;
    border: none;
    color: #03a2ea;
}

.choose_btn .submit-btn span {
    margin-left: .5rem;
    transition: transform 0.3s ease;
}

.choose_btn .submit-btn:hover span {
    transform: translateX(.5rem);
}

.tag_main {
    width: 75rem;
    height: 37.5rem;
    background-color: #ffffff;
    position: relative;
    overflow: hidden;
    margin: 0 auto;
}

.tag {
    position: absolute;
    border-radius: 3.125rem;
    color: white;
    padding: .75rem 1.875rem;
    font-size: 1.375rem;
    white-space: nowrap;
    box-shadow: 0 .25rem .625rem rgba(0, 0, 0, 0.08);
    user-select: none;
    transition: all 0.3s ease;
}

.tag:hover {
    transform: scale(1.05);
    z-index: 100 !important;
    box-shadow: 0 .5rem 1.25rem rgba(0, 0, 0, 0.15);
}

/* 颜色配置 */
.deep-blue {
    background-color: #007ce7;
}

/* 深蓝 */
.mid-blue {
    background-color: #00b0f0;
}

/* 中蓝 */
.light-blue {
    background-color: #62d1ff;
}

/* 浅蓝 */

/* 核心大标签样式 */
.tag-center {
    background-color: #00adef;
    font-size: 1.5rem;
    font-weight: bold;
    padding: 1.25rem 2.5rem;
    left: 50%;
    top: 45%;
    transform: translate(-50%, -50%);
    box-shadow: 0 .625rem 1.5625rem rgba(0, 173, 239, 0.3);
    z-index: 50;
}

.tag-center:hover {
    transform: translate(-50%, -50%) scale(1.05);
}

/* --- 绝对定位坐标还原 --- */

/* 第一排 */
.t1 {
    top: 10%;
    left: 35%;
}

/* 实时在线估价 */
.t2 {
    top: 12%;
    left: 58%;
}

/* 专业客服7*24小时 */

/* 第二排 */
.t3 {
    top: 28%;
    left: 22%;
}

/* 厂家直销 */
.t4 {
    top: 30%;
    left: 75%;
}

/* 一站式采购 */

/* 第三排 */
.t5 {
    top: 48%;
    left: 16%;
}

/* 提供解决方案 */

/* 第四排 */
.t6 {
    top: 65%;
    left: 26%;
}

/* 急速打样 */
.t7 {
    top: 65%;
    left: 45%;
}

/* 价格透明 */
.t8 {
    top: 62%;
    left: 66%;
}

/* 百分百保证品质 */

/* 第五排 */
.t9 {
    top: 80%;
    left: 35%;
}

/* 来图/来样定制 */
.t10 {
    top: 78%;
    left: 56%;
}

.footer {
    background-color: #333;
}

.footer .container {
    color: #FFFFFF;
    padding: 3.75rem 0;
    display: flex;
    justify-content: space-between;
    box-sizing: border-box;
}

/* 每一列的通用样式 */
.footer-column {
    flex: 1;
    padding-left: 1.25rem;
}

/* 标题样式 */
.footer-column h3 {
    font-size: 1rem;
    font-weight: bold;
    margin-bottom: .625rem;
    margin-top: 0;
}

/* 链接列表样式 */
.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column ul li {
    font-size: .875rem;
    color: #cccccc;
    margin-bottom: .625rem;
    cursor: pointer;
    transition: color 0.3s;
}

.footer-column ul li:hover {
    color: #ffffff;
}

/* 右侧服务热线列 */
.service-column {
    text-align: right;
    padding-right: 1.25rem;
}

.phone-box {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-bottom: .625rem;
}

/* 电话图标（使用CSS绘图或简单字符模拟） */
.phone-icon {
    width: 1.5rem;
    height: 1.5rem;
    margin-right: .625rem;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="white"><path d="M6.62 10.79a15.05 15.05 0 006.59 6.59l2.2-2.2c.27-.27.67-.36 1.02-.24 1.12.37 2.33.57 3.57.57.55 0 1 .45 1 1V20c0 .55-.45 1-1 1-9.39 0-17-7.61-17-17 0-.55.45-1 1-1h3.5c.55 0 1 .45 1 1 0 1.25.2 2.45.57 3.57.11.35.03.74-.25 1.02l-2.2 2.2z"/></svg>');
    background-repeat: no-repeat;
    background-size: contain;
}

.service-title {
    font-size: 1.5rem;
    font-weight: bold;
}

.phone-number {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1.25rem;
    display: block;
}

/* 二维码容器 */
.qr-code {
    width: 7.5rem;
    height: 7.5rem;
    background-color: white;
    padding: .3125rem;
    display: inline-block;
    margin-top: .625rem;
}

.qr-code img {
    width: 100%;
    height: 100%;
}

.banner_about {
    background: url(../images/about.jpg) no-repeat center center;
    background-size: cover;
    padding: 10rem 0;
    position: relative;
    z-index: 1;
    color: #FFFFFF;
}

.banner_bg {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    z-index: 2;
}

.banner_about h1 {
    position: relative;
    font-size: 3rem;
    z-index: 3;
    text-align: center;
    font-weight: 400;
}

.banner_about h3 {
    position: relative;
    font-size: 1.2rem;
    z-index: 3;
    text-align: center;
    font-weight: 400;
    margin-top: 0.8rem;
}

.about_us {
    background: #FFFFFF;
    padding: 5rem 0;
}
.about_text h3{
    text-align: center;
    color: #000000;
    font-size: 2.25rem;
    font-weight: 400;
    margin-bottom: 1rem;
}
.about_text p{
    color: #000000;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.6;
    width: 80%;
    margin: 0 auto; 
}