/*
CSS Reset
http://meyerweb.com/eric/tools/css/reset/
*/

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,
img,
ins,
kbd,
q,
s,
samp,
small,
strike,
strong,
sub,
sup,
tt,
var,
b,
u,
i,
center,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
canvas,
details,
embed,
figure,
figcaption,
footer,
header,
hgroup,
menu,
nav,
output,
ruby,
section,
summary,
time,
mark,
audio,
video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 32px;
    font: inherit;
    vertical-align: baseline;
}

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section {
    display: block;
}

body {
    line-height: 1;
}

ol,
ul {
    list-style: none;
}

blockquote,
q {
    quotes: none;
}

blockquote:before,
blockquote:after,
q:before,
q:after {
    content: '';
    content: none;
}

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

a {
    text-decoration: none;
    color: inherit;
}

button {
    border: 0;
    padding: 0;
    margin: 0;
    background-color: inherit;
    font-size: inherit;
}

button:hover {
    cursor: pointer;
}

html,
body {
    height: 100%;
/*    scroll-behavior: smooth;*/
}
header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    content: '';
    clear: both;
    font-size: 32px;
    padding: 16px;
}

header .logo {
    float: left;
    z-index: 2000;
    margin: 16px;
    color: #5CBDAA;
}

header .menu-btn {
    float: right;
    z-index: 2000;
    width: 39px;
    height: 39px;
    margin: 16px;
    background-image: url(../img/icon/menu.png);
    background-repeat: no-repeat;
    background-size: contain;
}

nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1000;
    color: white;
    background-color: rgba(0, 0, 0, 0.9);
}

.folded {
    display: none;
}

nav .logo {
    float: left;
    z-index: 2000;
    /*    line-height: 60px;*/
    margin: 32px;
    color: #5CBDAA;
}

nav .menu-btn {
    float: right;
    z-index: 2000;
    width: 39px;
    height: 39px;
    margin: 32px;
    background-image: url(../img/icon/close.png);
    background-repeat: no-repeat;
    background-size: contain;
}

nav .nav-ul {
    width: 1280px;
    margin: 184px auto;
}

nav .nav-ul > li {
    font-size: 7vh;
    margin: 0 16px 5.5vh 16px;
    font-family: 'Montserrat', sans-serif;
}

nav .sub-li {
    font-size: 6vh;
    margin: 8px 0px 8px 72px;
}

a.left {
    position: relative;
}

a.left:before {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: #5CBDAA;
    visibility: hidden;
    transition: all 0.3s ease-in-out;
}

a.left:hover {
    color: #5CBDAA;
    transition: all 0.3s ease-in-out;
}

a.left:hover:before {
    visibility: visible;
    width: 100%;
}

footer {
    display: block;
    min-width: 1280px;
    background-color: #101010;
}

.footer-content {
    width: 1280px;
    height: 120px;
    font-size: 18px;
    padding: 48px 16px;
    margin: 0 auto;
    box-sizing: border-box;
    
}
.footer-content::after {
    display: block;
    content: '';
    clear: both;
}
.footer-copy {
    float: left;
}
.footer-contact {
    float: right;
}
.footer-contact li {
    display: inline-block;
    margin: 0 4px;
}

.footer-contact li a img {
    display: block;
    width: 28px;
}

.top_btn {
    display: inline-block;
    position: fixed;
    bottom: 16px;
    right: 0;
    width: 64px;
    height: 64px;
    color: white;
    background-color: rgba(0, 0, 0, 0.9);
    background-repeat: no-repeat;
    background-size: contain;
    z-index: 999;
}