@charset "utf-8";

html {
    margin: 0 auto;
    height: 100%;
}

body {
    font-family: "Microsoft YaHei", 微软雅黑;
    font-size: 14px;
    line-height: 2.0;
    color: #333;
}

* {
    padding: 0;
    margin: 0;
    list-style: none;
    text-decoration: none;
}

/* * {
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
} */

ul,
li,
dl,
dt,
dd,
ol {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

a {
    color: #000000;
    text-decoration: none;
}

a:active,
a:visited {
    text-decoration: none;
}

a:hover {
    text-decoration: none !important;
}


.l {
    float: left;
}

.r {
    float: right;
}

img {
    border: none;
}

.clear {
    clear: both;
}

@font-face {
    font-family: 'syhcnr';
    src: url('../fonts/SOURCEHANSANSCN-REGULAR.OTF') format('truetype');
}

body {
    font-family: "Source Han Sans CN", "思源黑体 CN", sans-serif;
    font-weight: 400;
    font-family: 'syhcnr';
}

.tra_s_2 {
    -webkit-transition: all .2s linear;
    -moz-transition: all .2s linear;
    -o-transition: all .2s linear;
    transition: all .2s linear;
}

.mains {
    width: 1200px;
    margin: 0 auto;
}

/* header */
.header {
    width: 100%;
    padding: 18px 0;
    background: url(../images/header_bg.jpg) center no-repeat;
    background-size: 100% 100%;
}

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

.header-main .logo {
    width: 300px;
    font-size: 0;
}

.header-main .logo img {
    width: 268px;
    display: block;
}

.header-con {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
}

.header-con .header-contact {
    display: flex;
    align-items: center;
    justify-content: right;
    color: #de2320;
    font-size: 16px;
    line-height: 2.0;
    letter-spacing: 1px;
}

.header-con .header-contact span {
    font-size: 18px;
}

.header-con .header-contact img {
    width: 28px;
    margin-right: 10px;
}

.header-nav {
    display: flex;
}

.header-nav ul {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-nav ul li {
    font-size: 15px;
    line-height: 2.0;
    color: #191919;
}

.header-nav ul li a {
    font-size: 15px;
    line-height: 2.0;
    color: #191919;
    letter-spacing: 1px;
}

.header-nav ul li:hover a {
    color: #de2320;
}

/* Navigation styles */
.header-nav ul {
    position: relative;
    z-index: 1000;
}

.header-nav ul li {
    position: relative;
    transition: all 0.3s ease;
}

.header-nav ul li a {
    display: block;
    padding: 10px 16px;
    transition: all 0.3s ease;
    border-radius: 6px;
}

/* .header-nav ul li:hover a {
    background-color: rgba(25, 55, 245, 0.1);
} */

/* Nav item styles */
.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Dropdown caret styles */
.dropdown-caret {
    display: inline-block;
    width: 0;
    height: 0;
    border-top: 5px solid #191919;
    border-right: 5px solid transparent;
    border-left: 5px solid transparent;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.nav-item:hover .dropdown-caret {
    transform: rotate(180deg);
    border-top-color: #de2320;
}

/* Nav dropdown styles */
.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 190px;
    margin-top: 8px;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    overflow: hidden;
}

.nav-item:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown ul {
    display: block;
    padding: 8px 0;
    gap: 0;
}

.nav-dropdown ul li {
    display: block;
    margin: 0;
}

.nav-dropdown ul li a {
    display: block;
    padding: 12px 20px;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
    transition: all 0.3s ease;
    border-radius: 0;
    letter-spacing: normal;
}

.nav-dropdown ul li a:hover {
    /* color: #de2320; */
    background-color: #f8f9fa;
    padding-left: 25px;
}

.nav-dropdown ul li:first-child a {
    border-radius: 8px 8px 0 0;
}

.nav-dropdown ul li:last-child a {
    border-radius: 0 0 8px 8px;
}

/* header end */


/* banner-swiper*/
.swiper-container {
    width: 100%;
    overflow: hidden;
    position: relative;
}

.swiper-container .main_list {
    width: 100%;
}

.swiper-container .main_list .sl_img {
    width: 100%;
    font-size: 0;
}

.swiper-container .main_list .sl_img img {
    width: 100%;
    display: block;
}

.swiper-container .swiper-pagination-bullet {
    opacity: 1;
    width: 12px;
    height: 12px;
    display: inline-block;
    background: #ffffff;
}

.swiper-container .swiper-pagination-bullet-active {
    background: #ff6a00;
}

.swiper-container-horizontal>.swiper-pagination-bullets {
    width: 100%;
    left: 0;
    height: 30px;
    bottom: 50px;
}

.swiper-container-horizontal>.swiper-pagination-bullets .swiper-pagination-bullet {
    margin: 0 10px;
}

.swiper-container .main_list .sl_img .banner_info {
    position: absolute;
    font-family: "PingFang SC";
    font-size: 15px;
    left: 0;
    top: 24%;
    width: 100%;
}

.swiper-container .swiper-button-prev {
    z-index: 10;
    left: 86px;
    top: 50%;
    width: 47px !important;
    height: 47px !important;
    background: url(../images/left.png) center center no-repeat;
    background-size: 100% 100%;
}

.swiper-container .swiper-button-prev:after {
    content: '' !important;
}

.swiper-container .swiper-button-next {
    right: 86px;
    top: 50%;
    width: 47px !important;
    height: 47px !important;
    background: url(../images/right.png) center center no-repeat;
    background-size: 100% 100%;
}

.swiper-container .swiper-button-next:after {
    content: '' !important;
}

.banner .swiper-pagination {
    top: auto;
    bottom: 60px !important;
}

/* banner-swiper end*/
/* culture */
.culture {
    position: relative;
    z-index: 200;
    margin: 0 auto;
    margin-top: -50px;
    display: flex;
    justify-content: space-between;
}

.culture .culture-item {
    width: calc(48% - 60px);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    background-color: #ffffff;
    padding: 20px 30px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
    -webkit-transition: all .2s linear;
    -moz-transition: all .2s linear;
    -o-transition: all .2s linear;
    transition: all .2s linear;
    /* border-radius: 5px; */
}

.culture .culture-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
}

.culture .culture-item img {
    width: 50px;
    margin-right: 15px;
}

.culture .culture-item .culture-info {
    font-size: 16px;
    line-height: 1.8;
    color: #262626;
}

.culture .culture-item .culture-info h5 {
    font-size: 22px;
    line-height: 1.8;
    color: #191919;
    padding-bottom: 10px;
    margin-bottom: 8px;
    position: relative;
}

.culture .culture-item .culture-info h5:after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 19px;
    height: 4px;
    background: url(../images/dot.png) center center no-repeat;
    background-size: 100% 100%;
}

/* culture end */
.index-title {
    text-align: center;
}

.index-title h2 {
    font-size: 32px;
    line-height: 1.2;
    color: #333;
    text-align: center;
    margin-bottom: 10px;
    font-weight: bold;
}

.index-title p {
    font-size: 16px;
    line-height: 1.5;
    color: #666;
    text-align: center;
    margin-bottom: 40px;
}

/* about-scmp */
.about-scmp {
    padding: 60px 0;
}

.about-content {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

.about-left {
    flex: 1;
    width: 48%;
    font-size: 0;
    border-radius: 15px;
    overflow: hidden;
}

.about-left video {
    width: 100%;
    display: block;
}

.about-right {
    flex: 1;
    max-width: 50%;
}

.scmp-overview {
    background: #fff;
}

.overview-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e0e0e0;
}

.overview-title h3 {
    font-size: 20px;
    line-height: 1.2;
    color: #333;
    font-weight: bold;
    position: relative;
    padding-left: 15px;
}

.overview-title h3::before {
    position: absolute;
    left: 0;
    top: 50%;
    content: '';
    width: 3px;
    height: 18px;
    background-color: #e9575a;
    transform: translateY(-50%);
    border-radius: 2px;
}

.more-button {
    display: inline-block;
    padding: 5px 10px;
    background: #e53935;
    color: #fff;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
    transition: background 0.3s ease;
}

.more-button:hover {
	color:#ffffff;
    background: #c62828;
}

.overview-desc {
    font-size: 15px;
    line-height: 1.6;
    color: #666;
    margin-bottom: 30px;
    text-indent: 2.0em;
}

.stats-container {
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

.stat-item {
    text-align: center;
    flex: 1;
}

.stat-number {
    font-size: 18px;
    color: #000000;
    margin-bottom: 5px;
}

.stat-number span {
    font-size: 45px;
    line-height: 1.2;
    color: #000000;
    font-weight: normal;
    padding-right: 6px;
}

/* .stat-unit {
    font-size: 14px;
    line-height: 1.2;
    color: #666;
    margin-bottom: 10px;
} */

.stat-desc {
    font-size: 16px;
    line-height: 1.2;
    color: #999;
    letter-spacing: 1px;
}

/* about-scmp end */

/* tab-container */
.tab-container {
    width: 100%;
}

.tab-header {
    display: flex;
    margin-bottom: 13px;
    /* border-bottom: 1px solid #e0e0e0; */
}

.tab-button {
    padding: 12px 30px;
    border: none;
    background: none;
    font-size: 16px;
    color: #333;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    margin-right: 10px;
    border-radius: 10px 10px 0 0;
    border: 1px solid #bfbfbf;
}

.tab-button:hover {
    background: #f5f5f5;
}

.tab-button.active {
    background: #e53935;
    color: #fff;
    border-color: #e53935;
}

.tab-content {
    padding: 0;
}

.tab-panel {
    display: none;
}

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

.news-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.news-list li {
    padding: 12px 0;
    border-bottom: 1px dashed #e0e0e0;
    display: flex;
    align-items: center;
    position: relative;
}

.news-list li:last-child {
    border-bottom: none;
}

.bullet {
    color: #e53935;
    font-size: 16px;
    margin-right: 10px;
    flex-shrink: 0;
}

.news-list li a {
    flex: 1;
    font-size: 14px;
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
}

.news-list li a:hover {
    color: #e53935;
}

.date {
    font-size: 14px;
    color: #999;
    margin-left: 20px;
    flex-shrink: 0;
}

.new-tag {
    display: inline-block;
    padding: 2px 8px;
    background: #ff9800;
    color: #fff;
    font-size: 12px;
    border-radius: 4px;
    margin-left: 10px;
    margin-right: 10px;
    flex-shrink: 0;
}

/* tab-container end */
/* scmp */
.scmp {
    width: 100%;
    padding: 60px 0;
    background: url(../images/scmp_bg.jpg) top center no-repeat;
    background-size: 100% auto;
    background-color: #f4f5f9;
}

.scmp .index-title h2 {
    color: #ffffff;
}

.scmp-main {
    margin: 30px auto;
    font-size: 15px;
    line-height: 2.0;
    color: #ffffff;
    letter-spacing: 1px;
}

.scmp-main p {
    text-indent: 2.0em;
}

.scmp-list {
    display: flex;
    justify-content: space-between;
    border: 1px solid #dadef6;
    /* gap: 1px; */
}

.scmp-list .scmp-item {
    width: calc(25% - 60px);
    padding: 46px 30px;
    background: url(../images/items_bg2.jpg) center no-repeat;
    background-size: cover;
    border-left: 1px solid #dadef6;
}

.scmp-list .scmp-item:first-child {
    border-left: none;
}

.scmp-list .scmp-item .scmp-item-info {
    width: 100%;
    font-size: 14px;
    line-height: 1.8;
    color: #000000;
}

.scmp-list .scmp-item .scmp-item-info h3 {
    font-size: 24px;
    position: relative;
    padding-top: 15px;
}

.scmp-list .scmp-item .scmp-item-info h3::before {
    position: absolute;
    left: 0;
    top: 0;
    content: '';
    width: 27px;
    height: 5px;
    background-color: #e9575a;
    border-radius: 8px;
}

.scmp-list .scmp-item .scmp-item-info p {
    width: 80%;
}

.scmp-item-img {
    width: 100%;
    height: 133px;
    font-size: 0;
    display: flex;
    justify-content: right;
    align-items: flex-end;
}

.scmp-item-img img {
    width: 76px;
}

/* scmp end */
/* step */
.step {
    width: 100%;
    margin: 40px auto;
}

.step .step-main .step-main-list {
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    gap: 24px;
}

.step-main-list .step-item {
    position: relative;
    width: calc(25% - 60px);
    text-align: left;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background-color: #ffffff;
    padding: 20px 20px 10px;
    border: 1px solid #d6defa;
    -webkit-transition: all .2s linear;
    -moz-transition: all .2s linear;
    -o-transition: all .2s linear;
    transition: all .2s linear;
    /* border-radius: 5px; */
}

.step-main-list .step-item:hover {
    transform: translateY(-8px);
    /* box-shadow: 0 0 15px rgba(0, 0, 0, 0.2); */
}

.step-main-list .step-item h3 {
    font-size: 18px;
    line-height: 2.0;
    color: #000000;
    font-weight: 500;
    margin: 5px 0;
    letter-spacing: 1px;
}

.step-main-list .step-item .step-item-img {
    width: 100%;
    font-size: 0;
}

.step-main-list .step-item .step-item-img img {
    width: 41px;
    display: block;
}

.step-main-list .step-item .item-num {
    position: absolute;
    right: 14px;
    bottom: 26px;
    font-size: 54px;
    line-height: 1.0;
    color: #f4f5f9;
    font-weight: bold;
}

.step-item-info {
    position: relative;
    z-index: 100;
}

/* step end */
/* beikao */
.beikao {
    background-color: #f9fafc;
    border-radius: 18px;
    padding: 36px 30px;
}

.beikao-con {
    display: flex;
    justify-content: space-between;
}

.beikao-left {
    width: 49%;
}

.beikao-left .index-title h2 {
    text-align: left;
    font-weight: normal;
    font-size: 32px;
    margin-bottom: 15px;
}

.beikao-img {
    width: 100%;
    font-size: 0;
}

.beikao-img img {
    width: 100%;
    display: block;
}

.news {
    width: 47%;
}

.lists {
    width: 100%;
}

.lists li {
    width: 100%;
    padding: 10px 0 15px 0;
    margin-top: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px dashed #afafb1;
}

.lists li:last-child {
    border-bottom: none;
}

.lists li p {
    width: 70%;
    font-size: 16px;
    color: #040605;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding-left: 18px;
    background: url(../images/quan.png) left center no-repeat;
    background-size: 6px auto;
}

.lists li span {
    font-size: 16px;
    color: #414343;
}

.lists li:hover p {
    color: #e63232;
}

/* beikao end */
.advantage {
    width: 100%;
    padding: 60px 0;
    margin: 50px auto 0 auto;
    background-color: #f4f5f9;
}

.advantage-main {
    display: flex;
    justify-content: space-between;
    gap: 24px;
}

.advantage-item {
    width: calc(25% - 24px);
    /* box-shadow: 0 0 15px rgba(0, 0, 0, 0.1); */
    /* border-radius: 5px; */
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.item-li {
    border-radius: 15px;
    padding: 25px;
    border: 1px solid #d5e1ff;
    background-color: #ffffff;
    -webkit-transition: all .2s linear;
    -moz-transition: all .2s linear;
    -o-transition: all .2s linear;
    transition: all .2s linear;
}

.item-li h5 {
    font-size: 18px;
    line-height: 1.5;
    margin-bottom: 12px;
    padding-bottom: 12px;
    position: relative;
}

.item-li h5::after {
    position: absolute;
    left: 0;
    bottom: 0;
    content: '';
    width: 32px;
    height: 3px;
    background-color: #e9575a;
    border-radius: 8px;
}

.item-li p {
    font-size: 15px;
    line-height: 1.5;
    color: #666;
}

.advantage-item-first {
    background: url(../images/adv_back.png) center no-repeat;
    background-size: 100% 100%;
    width: calc(25% - 24px);
    /* box-shadow: 0 0 15px rgba(0, 0, 0, 0.1); */
    -webkit-transition: all .2s linear;
    -moz-transition: all .2s linear;
    -o-transition: all .2s linear;
    transition: all .2s linear;
    /* border-radius: 5px; */
    background-color: #ffffff;
}

.advantage-item-first:hover {
    transform: translateY(-8px);
    /* box-shadow: 0 0 15px rgba(0, 0, 0, 0.2); */
}

.advantage-item .item-li:hover {
    transform: translateY(-8px);
    /* box-shadow: 0 0 15px rgba(0, 0, 0, 0.2); */
}

.advantage-icon {
    width: 100%;
    font-size: 0;
}

.advantage-icon img {
    width: 100%;
    display: block;
}

.advantage-info {
    width: 80%;
    margin: 15px auto;
    padding-bottom: 10px;
}

.advantage-info h5 {
    font-size: 28px;
    line-height: 1.8;
    color: #ffffff;
    font-weight: normal;
    letter-spacing: 1px;
}

.advantage-info p {
    font-size: 16px;
    line-height: 1.8;
    color: #ffffff;
    letter-spacing: 1px;
    padding-left: 25px;
    background: url(../images/dot2.png) left center no-repeat;
    background-size: 10px auto;
}

/* advantage end */
/* baoming */
.baoming {
    width: 100%;
    padding: 100px 0 60px 0;
    margin: 0 auto;
    background: url(../images/baoming_bg.jpg) top center no-repeat;
    background-size: 100% auto;
    background-color: #f4f5f9;
}

.baoming .index-title h2 {
    font-weight: normal;
    color: #ffffff;
    letter-spacing: 1px;
}

.baoming .baoming-con {
    margin-top: 30px;
    padding: 30px;
    background: #ffffff;
    border-radius: 15px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.baoming-left {
    width: 48%;
}

.baoming-map {
    width: 48%;
    font-size: 0;
}

.baoming-map img {
    width: 100%;
    display: block;
}

/* region-container */
.region-container {
    width: 100%;
}

.region-group {
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
}

.region-title {
    display: inline-block;
    padding: 6px 6px;
    background: #feefe3;
    color: #e70012;
    font-size: 14px;
    font-weight: bold;
    border-radius: 8px;
    margin-right: 20px;
    min-width: 100px;
    text-align: center;
    flex-shrink: 0;
}

.city-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 10px;
    flex: 1;
    align-items: center;
}

.city-button {
    display: inline-block;
    padding: 6px 15px;
    border: 1px solid #bdc8f8;
    background: #fff;
    color: #333;
    font-size: 14px;
    line-height: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 8px;
    text-decoration: none;
    text-align: center;
}

.city-button:hover {
    border-color: #e80c1d;
    color: #e80c1d;
}

/* 
.city-button.active {
    border-color: #ff6b6b;
    background: #fff;
    color: #ff6b6b;
    box-shadow: 0 0 0 2px rgba(255, 107, 107, 0.2);
} */

/* region-container end */
/* baoming end */
/* links */
.links {
    width: 100%;
    padding: 60px 0;
    background: url(../images/link_bg.jpg) center no-repeat;
    background-size: cover;
}

.links .index-title h2 {
    font-weight: normal;
    color: #ffffff;
    letter-spacing: 1px;
    text-align: left;
}

.links .links-con {
    margin-top: 30px;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap:24px;
}

.links-con a {
    flex: 1;
	padding:0 15px;
	white-space:nowrap;
    font-size: 16px;
    line-height: 3.0;
    color: #ffffff;
    border: 1px solid #88a0d4;
    text-align: center;
    border-radius: 8px;
    -webkit-transition: all .2s linear;
    -moz-transition: all .2s linear;
    -o-transition: all .2s linear;
    transition: all .2s linear;
}

.links-con a:hover {
    transform: scale(1.05);
}

/* links end */

/* footer */
footer {
    width: 100%;
    padding: 36px 0;
    background-color: #f4f7fc;
    letter-spacing: 1px;
}

footer .footer-logo {
    padding-bottom: 15px;
    border-bottom: 1px solid #bebdc0;
    font-size: 0;
}

footer .footer-logo img {
    width: 210px;
    display: block;
}

.footer-nav {
    margin: 30px 0 15px 0;
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
}

.footer-nav a {
    font-size: 16px;
    line-height: 2.0;
    color: #313233;
    letter-spacing: 1px;
}

.footer-nav a:hover {
    color: #e80c1d;
}

.footer-contact {
    width: 100%;
    font-size: 16px;
    line-height: 2.0;
    color: #313132;
}

.footer-con {
    width: 100%;
    display: flex;
    justify-content: space-between;
}

.footer-con .footer-left {
    flex: 1;
    margin-right: 30px;
}

.footer-con .footer-ewm {
    width: 210px;
    font-size: 0;
}

.footer-con .footer-ewm .footer-ewm-con {
    margin-left: 20px;
    width: 150px;
    font-size: 0;
    padding: 15px;
    background: url(../images/ewm-bg.jpg) center no-repeat;
    background-size: 100% 100%;
}

.footer-con .footer-ewm .footer-ewm-con .footer-ewm-img {
    width: 100%;
    font-size: 0;
}

.footer-con .footer-ewm .footer-ewm-con .footer-ewm-img img {
    width: 100%;
    display: block;
}

.footer-con .footer-ewm .footer-ewm-con p {
    margin-top: 10px;
    font-size: 14px;
    line-height: 1.8;
    color: #0d1d7f;
    text-align: center;
    border-radius: 15px;
    background: -webkit-linear-gradient(left, #d8f8f9, #a9eafe);
    background: -o-linear-gradient(right, #d8f8f9, #a9eafe);
    background: -moz-linear-gradient(right, #d8f8f9, #a9eafe);
    background: linear-gradient(to right, #d8f8f9, #a9eafe);
}

.footer-copyright {
    width: 100%;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #c0c3c7;
}

.footer-copyright .copyright-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    line-height: 1.8;
    color: #313233;
    text-align: center;
}

/* footer end */

/* teacher */
.teacher {
    width: 100%;
    padding: 10px 0 60px 0;
    margin: 0 auto;
    background-color: #f4f5f9;
}

.container {
    width: 100%;
    display: flex;
    align-items: center;
    margin: 50px auto;
    gap: 30px;
    padding: 0;
}

/* 左侧介绍区 */
.intro-card {
    flex: 1;
    background: #f9f9f9;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.intro-card h3 {
    margin-bottom: 15px;
    color: #333;
}

.intro-card p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

.view-detail {
    background: #ff7a45;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

/* 中间主图区 */
.main-display {
    flex: 1;
    position: relative;
    border-radius: 10px;
    background-color: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.main-display-img {
    width: 100%;
    max-height: 300px;
    font-size: 0;
    overflow: hidden;
    border-radius: 8px 8px 0 0;
}

.main-display-img img {
    width: 100%;
    display: block;
}

.main-caption {
    text-align: center;
    margin:5px auto 15px auto;
    font-size: 16px;
    color: #333;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-btn {
    position: absolute;
    top: 20px;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.prev-btn {
    left: calc(100% + 30px);
}

.next-btn {
    right: -110px;
}

/* 右侧缩略图区 */
.thumbnails {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 10px;
}

.thumb-item {
    width: 100px;
    height: 100px;
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
    opacity: 0.7;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.thumb-item:hover,
.thumb-item.active {
    opacity: 1;
    border-color: #ff7a45;
}

.thumb-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* teacher end */