/* 通用样式 */
:root {
    --primary-color: #431d2e;
    --secondary-color: #643746;
    --camel-color: #b5a08e;
    --text-color: #333;
    --light-color: #fff;
    --gray-color: #f5f5f5;
    --dark-gray: #666;
    --light-gray: #999999;
    --border-color: #e5e5e5;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Microsoft YaHei", "Hiragino Sans GB", "Heiti SC", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

ul,
ol {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

a:hover {
    color: #431d2e;
}

img {
    max-width: 100%;
    height: auto;
    border: none;
}

button,
input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    outline: none;
    border: none;
}

button {
    cursor: pointer;
    background-color: transparent;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.3;
}

p {
    margin-bottom: 15px;
}

p:last-child {
    margin-bottom: 0;
}

table {
    border-collapse: collapse;
    width: 100%;
}

th,
td {
    text-align: left;
    padding: 8px;
}

::selection {
    background-color: #431d2e;
    color: #fff;
}

.container {
    width: 100%;
    margin: 0 auto;
    padding: 0 6%;
}

.btn {
    display: inline-block;
    padding: 12px 40px;
    background-color: var(--primary-color);
    color: var(--light-color);
    border-radius: 50px;
    text-align: center;
    transition: var(--transition);
}

.btn:hover {
    background-color: var(--secondary-color);
    color: var(--light-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/*页码*/
.page {
    margin-top: 50px;
    display: flex;
    justify-content: center;
    gap: 5px;
}

.page a {
    background-color: #ececec;
    color: var(--dark-gray);
    line-height: 50px;
    width: 50px;
    text-align: center;
    display: inline-block;
    border-radius: 3px;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    -ms-border-radius: 3px;
    -o-border-radius: 3px;
}

.page a:hover {
    color: #ffffff;
    background-color: var(--secondary-color);
}

.page .current {
    color: #ffffff;
    background-color: var(--primary-color);
}

.page .las {
    line-height: 50px;
}








.goback {
    text-align: center;
    margin-top: 50px;
}

.goback a {
    color: var(--primary-color);
    display: inline-block;
    margin: 0 15px;
}

.goback a:hover {
    color: var(--secondary-color);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    position: relative;
    margin-bottom: 15px;
    color: var(--text-color);
}

.section-title h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background-color: var(--camel-color);
    margin: 15px auto 0;
}

.section-title p {
    color: var(--dark-gray);
    font-size: 18px;
}

section {
    padding: 80px 0;
}

/* 头部导航 */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    background-color: transparent;
    transition: var(--transition);
}

#header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    width: 300px;
}

.logo a {
    display: flex;
    align-items: center;
}

.logo .hidden {
    display: none;
}

.nav .menu {
    display: flex;
}

.nav .menu li {
    margin: 0 30px;
    position: relative;
}

.nav .menu li a {
    font-size: 16px;
    font-weight: 500;
    padding: 10px 0;
    display: block;
    color: #ffffff;
}

.nav .menu li.active::after,
.nav .menu li:hover::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #ffffff;
    transition: var(--transition);
}

.mobile-menu-btn {
    display: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--light-color);
    margin: 5px 0;
    transition: var(--transition);
}

#header.sticky {
    background-color: var(--light-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
}

#header.sticky .logo .show {
    display: none;
}

#header.sticky .logo .hidden {
    display: block;
}

#header.sticky .nav .menu li a {
    color: #333333;
}

#header.sticky .nav .menu li.active a,
#header.sticky .nav .menu li a:hover {
    color: var(--primary-color);
}

#header.sticky .nav .menu li.active::after,
#header.sticky .nav .menu li:hover::after {
    background-color: var(--primary-color);
}

#header.sticky .mobile-menu-btn span {
    background-color: var(--primary-color);
}

/* Banner区域 */
.banner-section {
    height: 100vh;
    min-height: 600px;
    position: relative;
    overflow: hidden;
    margin-bottom: 0;
    padding: 0;
}

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

.slide-inner {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    position: relative;
}

.slide-inner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.banner-content {
    position: relative;
    z-index: 1;
    color: #fff;
}

.banner-content h2 {
    font-size: 48px;
    margin-bottom: 20px;
    animation-delay: 0.3s;
}

.banner-content p {
    font-size: 18px;
    margin-bottom: 30px;
    animation-delay: 0.6s;
}

.banner-content .btn {
    animation-delay: 0.9s;
}

.swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    background-color: #fff;
    opacity: 0.5;
}

.swiper-pagination-bullet-active {
    opacity: 1 !important;
}



/* 关于我们 */
.about-content {
    display: flex;
    align-items: center;
    gap: 120px;
}

.about-title {
    font-size: 50px;
    position: relative;
    letter-spacing: 2px;
    margin-bottom: 60px;
    margin-top: 35px;
}

.about-title strong {
    font-size: 70px;
    font-weight: bold;
    text-transform: uppercase;
    display: block;
    color: #f7f7f7;
    position: absolute;
    top: -30px;
    left: -15px;
    z-index: -1;
}

.about-text {
    width: 70%;
    line-height: 180%;
}

.about-text h3 {
    font-size: 22px;
    margin-bottom: 25px;
    color: #b3b3b3;
    font-weight: normal;
}

.about-text h3 span {
    display: inline-block;
    width: 40px;
    height: 2px;
    background: #b3b3b3;
    margin: 0 5px 6px 0;
}

.about-text p {
    margin-bottom: 25px;
    color: var(--dark-gray);
}

.about-text .btn {
    margin-top: 20px;
}

.about-image {
    width: 30%;
    border-radius: 10px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.about-image img {
    width: 100%;
    display: block;
    transition: transform 0.5s ease;
}

.about-image:hover img {
    transform: scale(1.05);
}

/* 服务优势 */
.advantage-section {
    background: url(../images/in-advantage.jpg) no-repeat center center;
    background-size: cover;
}

.advantage-list {
    padding: 15px 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15%;
    justify-content: space-around;
    align-items: start;
}

.advantage-item {
    display: flex;
    align-items: center;
    gap: 30px;
    transition: var(--transition);
    color: #ffffff;
    font-size: 18px;
}

.advantage-icon {
    width: 85px;
    height: 85px;
    background-color: rgba(67, 29, 46, 0.1);
    background-color: #ffffff;
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition);
}

.advantage-icon i {
    background-size: 100%;
    background-repeat: no-repeat;
    background-position: center center;
    width: 50%;
    height: 50%;
}

.advantage-item:hover .advantage-icon {
    background-color: var(--primary-color);
}

.advantage-item01:hover i {
    background-image: url(../images/icon05-w.png) !important;
}

.advantage-item02:hover i {
    background-image: url(../images/icon06-w.png) !important;
}

.advantage-content h3 {
    font-size: 36px;
    margin-bottom: 15px;
    font-weight: normal;
}

/* 业务领域 */
.business-section {
    background-color: #f9f9f9;
    position: relative;
}

.business-section .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    overflow: hidden;
    position: relative;
}

.business-section .section-title {
    display: none;
}

.business-gray {
    position: absolute;
    left: 6%;
    top: 50%;
    transform: translate(0, -50%);
    width: 500px;
}

.business-other {
    position: relative;
}

.business-other::before {
    display: block;
    content: '';
    width: 100%;
    height: 100%;
    background-color: #ececec;
    position: absolute;
    top: 0;
    left: -100%;
}

.business-box {
    position: relative;
    padding: 110px 20% 90px 0;
    background: url(../images/business-bg.png) no-repeat right center;
    background-size: cover;
    display: flex;
    align-items: flex-end;
}

.business-box-title {
    position: relative;
}

.business-box-title p {
    writing-mode: vertical-lr;
    text-transform: uppercase;
    color: #d0d0d0;
    font-size: 43px;
    font-weight: bold;
    line-height: 130%;
}

.business-box-title p::before {
    display: inline-block;
    content: '';
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background-color: rgba(181, 160, 142, .3);
    position: absolute;
    right: -8px;
    left: initial;
    top: -50px;
}

.business-box-title p::after {
    display: inline-block;
    content: '';
    width: 8px;
    height: 50px;
    background-color: rgba(181, 160, 142, 1);
    position: absolute;
    right: 24px;
    top: 0px;
}

.business-text {
    line-height: 180%;
    margin-left: -40px;
}

.business-text h2 {
    position: relative;
    font-size: 36px;
    margin: 20px 0;
    letter-spacing: 2px;
    z-index: 1;
}


.business-text p {
    font-size: 18px;
    line-height: 180%;
    margin: 0;
}

.business-text .num {
    font-size: 22px;
    margin-bottom: 5px;
}

.business-card {
    width: 100%;
    padding-left: 500px;
}

.business-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    margin-left: 5%;
}

.business-item {
    position: relative;
    border-bottom: 1px solid #e6e6e6;
    height: auto;
}

.business-item:nth-child(2)::after {
    content: '';
    display: inline-block;
    width: 100%;
    height: 1px;
    background-color: #e6e6e6;
    position: absolute;
    bottom: 0;
    right: 0;
    transform: translate(100%, 1px);
}

.business-item:nth-last-child(1),
.business-item:nth-last-child(2) {
    border-bottom: none;
}

.business-item:nth-child(odd) {
    border-right: 1px solid #e6e6e6;
}

.business-item .content {
    padding: 50px 110px 60px 80px;
    transition: var(--transition);
    padding: 50px 13% 60px 13%;
}

.business-item i {
    background-size: 100%;
    background-repeat: no-repeat;
    background-position: center center;
    width: 25px;
    height: 25px;
    display: block;
    transition: var(--transition);
}

.business-item01:hover i {
    background-image: url(../images/icon01-w.png) !important;
}

.business-item02:hover i {
    background-image: url(../images/icon02-w.png) !important;
}

.business-item03:hover i {
    background-image: url(../images/icon03-w.png) !important;
}

.business-item04:hover i {
    background-image: url(../images/icon04-w.png) !important;
}

.business-item h3 {
    display: inline-block;
    font-size: 22px;
    border-bottom: 1px solid #e6e6e6;
    padding: 0 15px 10px 0;
    margin-top: 20px;
}

.business-item p {
    margin: 25px 0 0 0;
    padding-right: 35px;
    font-size: 14px;
    line-height: 200%;
    color: var(--dark-gray);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.business-item span {
    position: absolute;
    right: 40px;
    bottom: 20px;
    font-size: 32px;
    color: #dcdcdc;
}

.business-item a {
    display: block;
    height: 100%;
}

.business-item a .content {
    height: 100%;
}

.business-item a:hover .content {
    background-color: rgba(181, 160, 142, 1);
    color: #ffffff;
}

.business-item a:hover i {
    color: #ffffff;
}

.business-item a:hover p {
    color: #ffffff;
}

.business-item a:hover span {
    color: #ffffff;
}

/* 新闻动态 */
.news-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 70px 40px;
}

.news-item {
    background-color: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    position: relative;
}

.news-item:hover {
    /* transform: translateY(-10px); */
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.news-image {
    /* height: 250px; */
    padding-top: 65%;
    position: relative;
    overflow: hidden;
}

.news-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-item:hover .news-image img {
    transform: scale(1.1);
}

.news-content {
    padding: 30px;
}

.news-content p {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    margin-bottom: 55px;
}

.news-date {
    position: absolute;
    top: 0;
    left: 0;
    width: 80px;
    height: 80px;
    background-color: var(--camel-color);
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.news-date .day {
    font-size: 28px;
    font-weight: 700;
    line-height: 1;
}

.news-date .month {
    font-size: 14px;
    margin-top: 5px;
}

.news-content h3 {
    font-size: 20px;
    margin-bottom: 15px;
    transition: var(--transition);
}

.news-content h3:hover {
    color: var(--primary-color);
}

.read-more {
    position: absolute;
    left: 30px;
    bottom: 30px;
    font-weight: 500;
    color: var(--camel-color);
}

.read-more i {
    margin-left: 5px;
    margin-top: 2px;
    transition: var(--transition);
    font-weight: bold;
}

.read-more:hover i {
    transform: translateX(5px);
}

.more-btn-container {
    text-align: center;
    margin-top: 50px;
}

/* 项目案例 */
.case-section {
    background-color: #f9f9f9;
}

.case-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0 4%;
    background-color: #ffffff;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    padding: 3%;
}

.case-item {
    border-top: 1px solid #e6e6e6;
}

.case-item:nth-child(1),
.case-item:nth-child(2) {
    border: none;
}

.case-content {
    transition: var(--transition);
    padding: 35px;
}

.case-content h3 {
    font-size: 22px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 1;
}

.case-content p {
    margin: 15px 0 0 0;
    font-size: 14px;
    line-height: 180%;
    color: var(--dark-gray);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.case-date {
    margin-top: 15px;
    font-size: 14px;
    color: var(--light-gray);
}

.case-item a:hover .case-content {
    background-color: var(--camel-color);
    color: #ffffff;
}

.case-item a:hover p {
    color: #ffffff;
}

.case-item a:hover .case-date {
    color: #ffffff;
}

/* 页脚 */
.footer {
    background-color: var(--primary-color);
    color: var(--light-color);
    padding: 70px 0 0;
    background: #333333;
}

.footer-top {
    display: flex;
    gap: 10%;
    margin-bottom: 50px;
}

.footer a {
    color: var(--light-color);
}

.footer a:hover {
    color: var(--camel-color);
}

.footer-item h3 {
    font-size: 18px;
    margin-bottom: 25px;
    position: relative;
}

.footer-item h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--light-color);
}

.footer-item .footer-email {
    display: flex;
    align-items: center;
}

.footer-item .footer-email img {
    margin-right: 10px;
    width: 20px;
}

.footer-links a {
    margin-right: 40px;
}

.footer-links a:last-child {
    margin-right: 0;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 25px 0;
    opacity: 0.7;
    font-size: 14px;
    display: flex;
    gap: 10px 25px;
}


/* 返回顶部 */
.back-to-top {
    position: fixed;
    right: 30px;
    bottom: 80px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--light-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    font-weight: bold;
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--secondary-color);
    color: var(--light-color);
    transform: translateY(-3px);
}


/* 内页banner */
.page-banner {
    background-repeat: no-repeat;
    background-position: center center;
    background-image: url(../images/about-b.jpg);
    background-size: cover;
    color: #fff;
    height: 50vh;
    min-height: 600px;
    line-height: 180%;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50vh;
    min-height: 600px;
    background-color: rgba(0, 0, 0, 0.5);
}

.page-banner .container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50vh;
    min-height: 600px;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
}

.page-banner .content {
    margin-top: 50px;
    position: relative;
    width: 100%;
}

.page-banner h1 {
    font-size: 48px;
    letter-spacing: 2px;
}

.page-banner p {
    font-size: 25px;
    text-transform: uppercase;

    margin: 10px 0 0 0;
    letter-spacing: 2px;

}

/* about服务覆盖范围 */
.coverage-section {
    background-color: #e6e9ee;
    position: relative;
}

.coverage-content {
    display: flex;
    align-items: center;
}

.coverage-text {
    width: 50%;
    padding-right: 5%;
}

.coverage-text h1 {
    color: var(--camel-color);
    font-size: 36px;
    margin-bottom: 30px;
}

.coverage-text p {
    font-size: 24px;
    line-height: 180%;
    margin: 10px 0 0 0;
    display: flex;
}

.coverage-text p i {
    color: var(--camel-color);
    font-size: 18px;
}

.coverage-text p span {
    display: inline-block;
    margin-left: 10px;
}

.coverage-image {
    position: absolute;
    right: 0;
    top: 0;
    width: 50%;
    height: 100%;
    background-image: url(../images/coverage.jpg);
    background-position: left bottom;
    background-repeat: no-repeat;
    background-size: cover;
    max-width: 900px;
}

.coverage-section img {
    display: none;
}

/* about业务领域 */
.core-business {
    background-color: #f9f9f9;
}

.core-business-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.core-business-box {
    background-color: #fff;
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.core-business-box:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.core-business-box .icon {
    width: 80px;
    height: 80px;
    background-color: rgba(67, 29, 46, 0.1);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 30px;
    transition: all 0.3s ease;
}

.core-business-box i {
    background-size: 100%;
    background-repeat: no-repeat;
    background-position: center center;
    width: 50%;
    height: 50%;
}

.core-business-box:hover .icon {
    background-color: var(--primary-color);
}

.core-business-box01:hover i {
    background-image: url(../images/icon01-w.png) !important;
}

.core-business-box02:hover i {
    background-image: url(../images/icon02-w.png) !important;
}

.core-business-box03:hover i {
    background-image: url(../images/icon03-w.png) !important;
}

.core-business-box04:hover i {
    background-image: url(../images/icon04-w.png) !important;
}

.core-business-box h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.core-business-box p {
    font-size: 14px;
    line-height: 180%;
    color: var(--dark-gray);
}

/* about服务优势 */
.about-advantage-title {
    padding-bottom: 50px;
}

.about-advantage {
    padding: 110px 0;
}

.about-email {
    font-size: 24px;
}

.about-email h2 {
    font-size: 36px;
    margin: 40px 0 15px 0;
}

/* 详情页 */
.news-detail {
    background-color: #ffffff;
    padding: 50px 5%;
    color: var(--dark-gray);
}

.news-detail .title {
    text-align: center;
    color: var(--light-gray);
    border-bottom: 1px dashed #dcdcdc;
    padding-bottom: 20px;
    margin: 20px 0 45px 0;
}

.news-detail .title strong {
    display: block;
    color: var(--text-color);
    line-height: 150%;
    font-size: 24px;
    margin-bottom: 20px;
}

.news-detail p {
    line-height: 180%;
    margin: 25px 0;
}

.news-detail img {
    display: block;
    margin: 30px auto;
    width: 100%;
    max-width: 800px;
}

/* 响应式设计 */
@media (max-width: 1399px) {
    .business-gray {
        width: 380px;
    }

    .business-card {
        padding-left: 380px;
    }
}

@media (max-width: 1199px) {

    /* 新闻动态 */
    .news-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantage-list {
        padding: 0;
    }

    .advantage-item {
        display: grid;
    }

    .case-list {
        grid-template-columns: repeat(1, 1fr);
    }

    .case-item:nth-child(2) {
        border-top: 1px solid #e6e6e6;
    }

}

@media (max-width: 991px) {
    .mobile-menu-btn {
        display: block;
        z-index: 99999;
    }

    .mobile-menu-btn.active span {
        background-color: var(--primary-color);
    }

    .nav {
        position: fixed;
        top: 0;
        right: -300px;
        width: 300px;
        height: 100vh;
        background-color: var(--light-color);
        padding: 80px 20px 30px;
        transition: var(--transition);
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        z-index: 999;
    }

    .nav.active {
        right: 0;
    }

    .nav .menu {
        flex-direction: column;
    }

    .nav .menu li {
        padding: 15px 0;
        margin: 0;
        border-bottom: 1px solid #dcdcdc;
    }

    .nav .menu li::after {
        display: none;
    }

    .nav .menu li a {
        color: var(--text-color);
        text-align: center;
    }

    .banner-content h2 {
        font-size: 40px;
    }

    .page-banner h1 {
        font-size: 40px;
    }

    .page-banner p {
        font-size: 21px;
    }

    .footer-links a {
        margin-right: 30px;
    }

    .footer-bottom {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }

    .section-title h2 {
        font-size: 32px;
    }

    .about-content {
        display: grid;
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-text,
    .about-image {
        width: 100%;
    }

    .business-section .container {
        display: block;
        position: initial;
    }

    .business-section .section-title {
        display: block;
    }

    .business-gray {
        display: none;
    }

    .business-card {
        padding: 0;
    }

    .business-list {
        margin: 0;
    }

    .business-item:nth-child(2)::after {
        display: none;
    }

    .business-item .content {
        padding: 50px 18% 60px 13%;
    }

    /* about业务领域 */
    .core-business-content {
        grid-template-columns: 1fr;
    }




}

@media (max-width: 767px) {
    body {
        font-size: 14px;
    }

    section {
        padding: 60px 0;
    }

    .banner-content h2 {
        font-size: 24px;
    }

    .banner-content p {
        font-size: 14px;
    }

    .section-title {
        margin-bottom: 40px;
    }

    .section-title h2 {
        font-size: 24px;
    }

    .btn {
        padding: 10px 35px;
    }

    .read-more i {
        margin-top: 0px;
        font-size: 14px;
    }

    .page {
        gap: 10px;
    }

    .page a {
        background-color: var(--primary-color);
        color: #ffffff;
        font-weight: bold;
        line-height: initial;
        width: initial;
    }

    .page span {
        padding: 0 22px;
        line-height: 30px;
        border: 1px solid var(--primary-color);
        border-radius: 3px;
        font-size: 14px;
        display: inline-block;
    }

    .page a:hover span {
        border: 1px solid var(--secondary-color);
    }



    .business-item .content {
        padding: 30px 12% 40px 12%;
    }

    .business-item h3 {
        font-size: 18px;
        padding: 0 15px 10px 0;
        margin-top: 20px;
    }

    .business-item p {
        margin: 20px 0 0 0;
        padding: 0;
    }

    .business-item span {
        right: 12%;
        bottom: 10px;
        font-size: 18px;
    }

    .news-list {
        grid-template-columns: repeat(1, 1fr);
        row-gap: 40px;
    }

    .news-content p {
        margin-bottom: 45px;
    }

    .news-content h3 {
        font-size: 18px;
    }

    .case-content {
        padding: 35px 6%;
    }

    .case-content h3 {
        font-size: 18px;
    }



    .footer {
        padding: 0;
    }

    .footer-top {
        display: grid;
        grid-template-columns: 1fr;
        gap: 25px;
        padding: 40px 0;
        margin: 0;
    }

    .footer-item h3 {
        font-size: 16px;
    }

    .footer-bottom {
        grid-template-columns: repeat(1, 1fr);
    }

    /* 内页banner */
    .page-banner {
        height: 35vh;
        min-height: initial;
    }

    .page-banner::before {
        height: 35vh;
        min-height: initial;
    }

    .page-banner .container {
        height: 35vh;
        min-height: initial;
    }

    .page .las {
        line-height: 30px;
    }

    .back-to-top {
        right: 6%;
    }

    .page-banner h1 {
        font-size: 24px;
    }

    .page-banner p {
        font-size: 15px;
        margin: 0 0 5px 0;

    }

    .about-title {
        font-size: 28px;
        margin: 30px 0;
    }

    .about-title strong {
        font-size: 40px;
        top: -20px;
        left: -5px;
    }

    .about-text h3 {
        font-size: 18px;
    }

    .about-text h3 span {
        width: 30px;
    }

    .about-text .btn {
        margin-top: 0px;
    }

    .about-advantage {
        padding: 60px 0;
    }

    .advantage-section {
        background: url(../images/in-advantage-mobile.jpg) no-repeat center center;
    }

    .advantage-list {
        grid-template-columns: repeat(1, 1fr);
        gap: 60px;
    }

    .advantage-item {
        display: flex;
        font-size: 14px;
        gap: 20px;
    }

    .advantage-icon {
        width: 60px;
        height: 60px;
        font-size: 28px;
    }

    .advantage-content h3 {
        font-size: 20px;
        font-weight: bold;
    }

    .advantage-content p {
        line-height: 180%;
    }

    .coverage-text {
        width: 100%;
        padding-right: 0;
    }

    .coverage-text h1 {
        font-size: 24px;
        margin-bottom: 30px;
    }

    .coverage-text p {
        font-size: 18px;
    }

    .coverage-image {
        display: none;
    }

    .coverage-section img {
        display: block;
        margin-bottom: -60px;
    }

    /* about业务领域 */
    .core-business-box h3 {
        font-size: 20px;
    }

    .about-email h2 {
        font-size: 24px;
        margin: 40px 0 15px 0;
    }

    .about-email {
        font-size: 20px;
    }

    /* 详情页 */
    .news-detail {
        padding: 25px 5%;
    }

    .news-detail .title {
        margin: 10px 0 30px 0;
    }

    .news-detail .title strong {
        font-size: 18px;
    }

    .news-detail p {
        line-height: 180%;
        margin: 25px 0;
    }

    .news-detail img {
        display: block;
        margin: 30px auto;
        width: 100%;
        max-width: 800px;
    }

}

@media (max-width: 575px) {
    .logo {
        width: 200px;
    }

    .business-list {
        grid-template-columns: repeat(1, 1fr);
        border-bottom: 1px solid #e6e6e6;
    }

    .business-item {
        border-top: 1px solid #e6e6e6;
        border-bottom: none;
    }

    .business-item:nth-child(odd) {
        border-right: none;
    }

    .business-item .content {
        padding: 30px 6% 40px 6%;
    }

    .business-item h3 {
        border-bottom: none;
        padding: 0;
    }

    .business-item p {
        margin: 10px 0 0 0;
    }

    .business-item span {
        right: 6%;
        top: 30px;
        bottom: initial;
    }
}