* {
    margin: 0px;
    margin-top: 0px;
    margin-right: 0px;
    margin-bottom: 0px;
    margin-left: 0px;
}

a {
    text-decoration: none;
}

ol,
ul {
    list-style: none;
}

html,
body,
div,
span,
applet,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
a,
abbr,
acronym,
address,
big,
cite,
code,
del,
dfn,
em,
font,
ins,
kbd,
q,
s,
samp,
small,
strike,
strong,
sub,
sup,
tt,
var,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
caption,
input,
select {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    font-weight: inherit;
    font-style: inherit;
    font-family: inherit;
    vertical-align: baseline;
}

.f-weight {
    font-weight: 600;
}

.t-align {
    text-align: center;
}

.f-style {
    font-style: italic;
}

.t-overflow {
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.t-overflow-3 {
    overflow: hidden;
    text-overflow: ellipsis;
    -webkit-line-clamp: 3;
    display: -webkit-box;
    -webkit-box-orient: vertical;
}

.b-sizing {
    box-sizing: border-box;
}

.d-flex {
    display: flex;
}

.j-c-center {
    justify-content: center;
}

.j-c-spacebetween {
    justify-content: space-between;
}

.j-c-spacearound {
    justify-content: space-around;
}

.j-c-flexstart {
    justify-content: flex-start
}

.a-i-center {
    align-items: center;
}

.a-i-flexstart {
    align-items: flex-start;
}

.a-i-flexend {
    align-items: flex-end;
}

.f-d-column {
    flex-direction: column;
}

.f-w-wrap {
    flex-wrap: wrap;
}

.p-relative {
    position: relative;
}

.p-absolute {
    position: absolute;
}

.p-fixed {
    position: fixed;
}

.f-left {
    float: left;
}

.f-right {
    float: right;
}

.clearfix:after {
    content: ".";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
    font-size: 0;
    line-height: 0;
}

.c-pointer {
    cursor: pointer;
}

html,
body {
    width: 100%;
    color: #333333;
    line-height: 36px;
    scroll-behavior: smooth;
}

a {
    color: #333333;
    position: relative;
}

input::placeholder {
    color: #b3b3b3;
    padding-left: 5px;
}

.main-section {
margin-top: 40px;
    width: 100%;
}

.main-section-1,
.main-section-2,
.main-section-3,
.main-section-4,
.main-section-5,
.main-section-6 {
    width: 1200px;
    margin: 0 auto 30px;
}

.main-section-1 {
    background: url(../img/background-1.png) no-repeat;
    background-size: 100% 100%;
}

.main-p-2 {
    background: url(../img/background-2.png) no-repeat;
    background-size: 100% 100%;
}


.main-p-4 {
    background: url(../img/background-4.png) no-repeat;
    background-size: 100% 100%;
}

.main-p-6 {
    background: url(../img/background-6.png) no-repeat;
    background-size: 100% 100%;
}

.main-1-content {
    background: url(../img/main-1-background.png) no-repeat;
    background-size: 100% 100%;
    padding: 15px;
    margin-left: 20px;
}

.more-p a {
    color: #3473b6;
}

.main-section p {
    text-indent: 2em;
}

.main-1-link {
    margin-top: 20px;
}

.main-1-link a {
    width: 135px;
    display: inline-block;
}

.main-1-link a img {
    width: 100%;
}

.main-2-content {
    height: 620px;
    background: url(../img/city-condition-background.png) no-repeat;
    background-size: 100% 100%;
}

.main-2-content .slide {
    width: 200px;
    height: 100%;
    color: #ffffff;
    line-height: 46px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}

.main-2-content .slide li {
    width: 60%;
    margin-bottom: 18px;
}

.main-2-content .slide li.on {
    font-size: 16px;
    color: #3473b6;
    font-weight: 600;
}

.main-2-content .slide li div {
    width: 112%;
    padding-left: 24px;
}

.main-2-content .slide li.on div {
    background: #ffffff;
    border-radius: 30px 0px 0px 30px;
}

.main-section-2 .slide-content {
    flex: 1;
}

.main-section-2 .slide-content div {
    padding: 15px;
    box-sizing: border-box;
}

.main-section-3 a:nth-of-type(1) {
    left: 468px;
}

.main-section-3 a:nth-of-type(2) {
    top: 145px;
    left: 600px;
}

.main-section-3 a:nth-of-type(3) {
    left: 742px;
}

.main-section-3 a:nth-of-type(4) {
    top: 145px;
    left: 885px;
}

.main-section-3 a:nth-of-type(5) {
    right: 0px;
}

.main-4-video {
    height: 728px;
    background: url(../img/video-background.png) no-repeat bottom center;
}

.main-4-video .swiper {
    height: 96%;
}

.main-4-video .swiper video {
    width: 100%;
    height: 95%;    
}

.main-section-5 ul li {
    margin: 0 15px;
    position: relative;
    padding-top: 20px;
}

.main-section-5 ul li img {
    width: 90%;
}

.main-section-5 ul li:nth-of-type(2n) {
    padding-top: 45px;
}

.main-section-6 .slide-box-2 ul li {
    margin: 0 15px;
}

.main-section-6 .slide-box-2 ul li a {
    position: relative;
}

.main-section-6 .slide-box-2 ul li a div {
    width: 180px;
    height: 40px;
    color: #ffffff;
    text-align: center;
    line-height: 34px;
    background: #4888cc;
    position: absolute;
    bottom: -15px;
    left: 50%;
    margin-left: -90px;
}

.main-section-6 .slide-box-2 ul li img {
    width: 340px;
}