html {
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  font-size: 40px;
  background: #fff;
}
body {
  min-width: 320px;
  max-width: 640px;
  margin: 0 auto;
  font-family: arial,Microsoft Yahei;
  color: #333;
  background: #fff;
}
a,
abbr,
acronym,
address,
applet,
article,
aside,
audio,
b,
big,
blockquote,
canvas,
caption,
center,
cite,
code,
dd,
del,
details,
dfn,
div,
dl,
dt,
em,
embed,
fieldset,
figcaption,
figure,
footer,
form,
h1,
h2,
h3,
h4,
h5,
h6,
header,
hgroup,
html,
i,
iframe,
img,
ins,
kbd,
label,
legend,
li,
mark,
menu,
nav,
object,
ol,
output,
p,
pre,
q,
ruby,
s,
samp,
section,
small,
span,
strike,
strong,
sub,
summary,
sup,
table,
tbody,
td,
tfoot,
th,
thead,
time,
tr,
tt,
u,
ul,
var,
video {
  margin: 0;
  padding: 0;
}
li,
ul {
  list-style: none;
}
a:active,
a:hover {
  outline: 0;
}
img {
  width: 100%;
  vertical-align: top;
}
a {
  outline: 0;
  text-decoration: none;
  cursor: pointer;
  display: block;
  color: #333;
}
a:hover {
  text-decoration: none;
  outline: 0;
}
button,
html input[type=button],
input[type=reset],
input[type=submit] {
  -webkit-appearance: button;
  cursor: pointer;
}
input[type=search] {
  -webkit-appearance: text field;
  -webkit-box-sizing: content-box;
  -moz-box-sizing: content-box;
  box-sizing: content-box;
}
input[type=search]:-webkit-search-cancel-button,
input[type=search]:-webkit-search-decoration {
  -webkit-appearance: none;
}
button {
  overflow: visible;
}
button,
select {
  text-transform: none;
}
@media (min-width: 320px) {
  html {
    font-size: 55.55556%;
  }
}
@media (min-width: 360px) {
  html {
    font-size: 62.5%;
  }
}
@media (min-width: 375px) {
  html {
    font-size: 65.1042%;
  }
}
@media (min-width: 384px) {
  html {
    font-size: 66.6667%;
  }
}
@media (min-width: 414px) {
  html {
    font-size: 71.875%;
  }
}
@media (min-width: 448px) {
  html {
    font-size: 77.7778%;
  }
}
@media (min-width: 480px) {
  html {
    font-size: 83.3333%;
  }
}
@media (min-width: 512px) {
  html {
    font-size: 88.8889%;
  }
}
@media (min-width: 544px) {
  html {
    font-size: 94.4444%;
  }
}
@media (min-width: 576px) {
  html {
    font-size: 100%;
  }
}
@media (min-width: 608px) {
  html {
    font-size: 105.556%;
  }
}
@media (min-width: 640px) {
  html {
    font-size: 111.111%;
  }
}
.flex {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
  -webkit-flex-direction: row;
  -moz-box-orient: horizontal;
  -moz-box-direction: normal;
  -ms-flex-direction: row;
  flex-direction: row;
  -webkit-flex-wrap: wrap;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
  -moz-box-pack: justify;
  -ms-flex-pack: justify;
  justify-content: space-between;
}
.left {
  float: left;
}
.right {
  float: right;
}
.clearfix::after {
  content: " ";
  display: block!important;
  clear: both;
}
.align-center {
  text-align: center;
}
.relative {
  position: relative;
}
.absolute {
  position: absolute;
}
a.chat {
  display: block;
  width: 2.2rem;
  height: 0.5rem;
  background-color: #ffce5a;
  font-size: 0.25rem;
  line-height: 0.5rem;
  color: #161631;
  text-align: center;
  margin: 0.225rem auto;
  border-radius: 0.5625rem;
}
a.chat img {
  display: inline-block;
  width: 0.174375rem;
  vertical-align: middle;
}
p.sp-title {
  font-weight: bold;
  font-size: 0.28rem;
  color: #161631;
  text-align: center;
  margin: 0 auto;
}
div.line {
  margin-top: 0.05625rem;
  text-align: center;
  height: 0.073125rem;
}
div.line img {
  width: 3.66rem;
}
p.sp-intro {
  font-size: 0.2rem;
  color: #161631;
  text-align: center;
  margin-top: 0.2rem;
}
img.icon-top {
  position: fixed;
  right: 0;
  top: 80%;
  width: 0.3375rem;
  z-index: 10;
}
body,
html {
  scroll-behavior: smooth;
}
.sec1 {
  margin-top: 0.16875rem;
}
.sec1 p.title {
  width: 0.73125rem;
  background: url(top_bg.jpg) no-repeat left center;
  background-size: cover;
  font-weight: 700;
  font-size: 0.13rem;
  color: #fff;
  text-align: center;
  line-height: 0.28rem;
  margin-bottom: 0.1125rem;
}
.sec1 ul {
  padding: 0 0.1125rem;
  -webkit-box-pack: space-evenly;
  -webkit-justify-content: space-evenly;
  -moz-box-pack: space-evenly;
  -ms-flex-pack: space-evenly;
  justify-content: space-evenly;
}
.sec1 ul li img {
  width: 0.495rem;
}
.sec1 ul li p {
  margin-top: 0.028125rem;
  font-size: 0.12rem;
  color: #161631;
  text-align: center;
}
.sec2 {
  margin-top: 0.225rem;
  padding: 0 0.1125rem;
  position: relative;
}
.sec2 img.aim {
  width: 4.2rem;
  margin-top: 0.25rem;
}
.sec2 p.absolute {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
    top: 1.75rem;
    right: 0;
    font-size: 0.2rem;
    color: #161631;
    width: 2.7rem;
    height: 2.3rem;
    line-height: 0.3rem;
    background-color: #fff;
    padding: 0.2rem;
    margin-right: 0.1125rem;
  -webkit-box-shadow: 0 0 4px 2px rgba(0, 0, 0, 0.1);
  box-shadow: 0 0 4px 2px rgba(0, 0, 0, 0.1);
}
.sec2 a.chat {
  width: 3.15rem;
    height: 0.5rem;
    background-color: #ffce5a;
    font-size: 0.2rem;
    line-height: 0.5rem;
    color: #161631;
    text-align: center;
    margin: 0.5rem auto;
}
.sec3 {
  background-color: #f8f8f8;
  padding: 0.225rem 0.1125rem 0;
}
.sec3 div.title {
  -webkit-box-pack: start;
  -webkit-justify-content: flex-start;
  -moz-box-pack: start;
  -ms-flex-pack: start;
  justify-content: flex-start;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -moz-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  margin-top: 0.16875rem;
}
.sec3 div.title img {
  width: 0.298125rem;
}
.sec3 div.title p {
  font-size: 0.13rem;
  font-weight: bold;
  color: #161631;
  margin-left: 0.05625rem;
}
.sec3 p.intro {
  font-size: 0.1125rem;
  color: #161631;
  padding-left: 0.343125rem;
}
.sec3 div.book {
  margin-top: 0.16875rem;
}
.sec3 div.book img {
  width: 1.648125rem;
}
.sec3 div.book.sp {
  -webkit-box-pack: space-evenly;
  -webkit-justify-content: space-evenly;
  -moz-box-pack: space-evenly;
  -ms-flex-pack: space-evenly;
  justify-content: space-evenly;
}
.sec3 div.book.sp img {
  width: 0.95625rem;
}
.sec3 div.but {
  -webkit-box-align: center;
  -webkit-align-items: center;
  -moz-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}
.sec3 div.but a.l {
  display: block;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  border: 1px solid #161631;
  color: #161631;
  font-size: 0.12375rem;
  line-height: 0.28125rem;
  text-align: center;
  width: 1.2375rem;
  height: 0.2925rem;
  border-radius: 0.5625rem;
  margin-left: 0.3rem;
}
.sec3 div.but a.chat {
  width: 1.2375rem;
}
.sec4 {
  background: url(sec4_bg.jpg) no-repeat top center;
  padding: 0.225rem 0.2rem 0.05625rem;
}
.sec4 p.sp-title {
  position: relative;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  color: #fff;
  text-align: right;
      padding-right: 1.8rem;
    margin-top: 0.5rem;
}
.sec4 p.sp-title img {
  position: absolute;
  width: 0.51rem;
  top: -0.29rem;
  left: 1.9rem;
}
.sec4 p.sp-intro {
  color: #fff;
}
.sec4 div.title {
  -webkit-box-pack: start;
  -webkit-justify-content: flex-start;
  -moz-box-pack: start;
  -ms-flex-pack: start;
  justify-content: flex-start;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -moz-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  margin-top: 0.3rem;
}
.sec4 div.title img.icon1 {
  width: 0.53rem;
}
.sec4 div.title img.icon2 {
  width: 0.53rem;
}
.sec4 div.title img.icon3 {
  width: 0.53rem;
}
.sec4 div.title p {
  font-size: 0.24rem;
  font-weight: bold;
  color: #ffd766;
  margin-left: 0.1rem;
}
.sec4 p.intro {
  font-size: 0.2rem;
  color: #fff;
  padding-left: 0.62rem;
}
.sec4 div.lesson img {
  margin-top: 0.15rem;
}
.sec4 div.lesson img.img1 {
  width: 1.92rem;
}
.sec4 div.lesson img.img2 {
  width: 2.93rem;
}
.sec4 div.lesson img.img3 {
  width: 2.95rem;
}
.sec4 div.lesson .img4 {
  width: 2.9rem;
}
.sec4 div.but {
  -webkit-box-align: center;
  -webkit-align-items: center;
  -moz-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}
.sec4 div.but a.l {
  display: block;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
    border: 1px solid #ffce5a;
    color: #fff;
    font-size: 0.25rem;
    line-height: 0.5rem;
    text-align: center;
    width: 2.2rem;
    height: 0.5rem;
    border-radius: 0.5625rem;
    margin-left: 0.3rem;
}
.sec4 div.but a.chat {
  width: 2.2rem;
}
.sec5 {
  padding: 0.2rem 0.2rem 1px;
  background-color: #f8f8f8;
}
.sec5 p.sp-title {
  margin-top: 0.425rem;
}
.sec5 p.sp-title img {
  width: 0.53rem;
  margin-right: 0.1rem;
  vertical-align: middle;
}
.sec5 p.sp-title.b {
  position: relative;
}
.sec5 p.sp-title.b img {
  position: absolute;
  left: 1.8rem;
    top: -0.1rem;
    width: 0.53rem;
    margin-right: 0;
}
.sec5 p.sp-title.b.c img {
  width: 0.309375rem;
}
.sec5 div.line {
  margin-bottom: 0.2rem;
}
.sec5 p.intro {
 font-size: 0.2rem;
    color: #161631;
    margin: 0.2rem 0;
    line-height: 0.32rem;
}
.sec5 div.flex img {
  width: 2.93rem;
  margin-top: 0.084375rem;
}
.sec5 img.co-op {
  display: block;
  width: 3.36375rem;
  margin: 0.16875rem auto 0;
}
.sec6 {
  background: url(sec6_bg.jpg) no-repeat top center;
  padding: 0.1125rem 0.1125rem 0;
}
.sec6 p.sp-title {
  color: #ffce5a;
}
.sec6 p.sp-intro {
  color: #fff;
  margin-bottom: 0.1125rem;
}
.sec6 img.l {
  width: 1.895625rem;
}
.sec6 div.title {
  -webkit-box-pack: start;
  -webkit-justify-content: flex-start;
  -moz-box-pack: start;
  -ms-flex-pack: start;
  justify-content: flex-start;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -moz-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  margin-top: 0.16875rem;
}
.sec6 div.title img.icon1 {
  width: 0.298125rem;
}
.sec6 div.title img.icon2 {
  width: 0.315rem;
}
.sec6 div.title img.icon3 {
  width: 0.309375rem;
}
.sec6 div.title p {
  font-size: 0.135rem;
  color: #ffd766;
  margin-left: 0.05625rem;
}
.sec6 div.title.sp {
  -webkit-box-pack: center;
  -webkit-justify-content: center;
  -moz-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
}
.sec6 p.intro {
  font-size: 0.1125rem;
  color: #fff;
  margin-bottom: 0.09rem;
}
.sec6 div.but {
  -webkit-box-align: center;
  -webkit-align-items: center;
  -moz-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}
.sec6 div.but a.l {
  display: block;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  border: 1px solid #ffce5a;
  color: #fff;
  font-size: 0.12375rem;
  line-height: 0.28125rem;
  text-align: center;
  width: 1.2375rem;
  height: 0.2925rem;
  border-radius: 0.5625rem;
  margin-left: 0.3rem;
}
.sec6 div.but a.chat {
  width: 1.2375rem;
}
.sec7 {
  padding: 0.1125rem 0.1125rem 0;
}
.sec7 .flex {
  -webkit-box-align: center;
  -webkit-align-items: center;
  -moz-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  margin-top: 0.1125rem;
}
.sec7 .flex img {
  width: 2.5rem;
}
.sec7 .flex p {
  width: 0.9rem;
    line-height: 0.25rem;
    text-align: center;
    color: #161631;
    font-size: 0.2rem;
    position: relative;
}
.sec7 .flex p img {
  position: absolute;
    width: 0.7rem;
    top: 0.72rem;
    left: 0.1rem;
}
.sec7 .flex.sp p img {
  top: 0.500625rem;
}
.sec7 div.but {
  -webkit-box-align: center;
  -webkit-align-items: center;
  -moz-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}
.sec7 div.but a.l {
  display: block;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    border: 1px solid #161631;
    color: #161631;
    font-size: 0.25rem;
    line-height: 0.5rem;
    text-align: center;
    width: 2.2rem;
    height: 0.5rem;
    border-radius: 0.5625rem;
    margin-left: 0.3rem;
}
.sec7 div.but a.chat {
  width: 2.2rem;
}
.sec8 {
  background: url(sec8_bg.jpg) no-repeat top center;
  padding: 0.5rem 0.2rem 0;
}
.sec8 p.sp-title {
  color: #fff;
}
.sec8 p.sp-intro {
  color: #fff;
}
.sec8 .flex img {
    width: 2.95rem;
    margin-top: 0.15rem;
}
.sec8 div.but {
  -webkit-box-align: center;
  -webkit-align-items: center;
  -moz-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}
.sec8 div.but a.l {
  display: block;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  border: 1px solid #ffce5a;
  color: #fff;
  font-size: 0.25rem;
  line-height: 0.5rem;
  text-align: center;
  width: 2.5rem;
  height: 0.5rem;
  border-radius: 0.5625rem;
  margin-left: 0.3rem;
}
.sec8 div.but a.chat {
  width: 2.2rem;
}
.sec9 {
  padding: 0.5rem 0.2rem 0;
}
.sec9 div.lesson img {
  margin-top: 0.12rem;
}
.sec9 div.lesson img.img1 {
  width: 1.93rem;
}
.sec9 div.lesson .img3 {
  width: 2.95rem;
}
.sec9 div.but {
  -webkit-box-align: center;
  -webkit-align-items: center;
  -moz-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}
.sec9 div.but a.l {
  display: block;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
    border: 1px solid #161631;
    color: #161631;
    font-size: 0.25rem;
    line-height: 0.5rem;
    text-align: center;
    width: 2.2rem;
    height: 0.5rem;
    border-radius: 0.5625rem;
    margin-left: 0.3rem;
}
.sec9 div.but a.chat {
  width: 2.2375rem;
}
.sec10 {
  padding: 0.225rem 0.1125rem;
  background: url(sec10_bg.jpg) no-repeat top center;
}
.sec10 p.sp-title {
  color: #fff;
  font-family: Arial, Helvetica, sans-serif;
  font-weight: 700;
}
.sec10 form input {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  display: block;
  width: 2.8125rem;
  height: 0.30375rem;
  font-size: 0.12375rem;
  line-height: 0.30375rem;
  text-align: center;
  margin: 0.14625rem auto;
  border-radius: 0.5625rem;
  border: 1px solid #fff;
  color: #fff;
  background-color: transparent;
  outline: 0;
}
.sec10 form input::-webkit-input-placeholder {
  color: #fff;
}
.sec10 form input::-moz-placeholder {
  color: #fff;
}
.sec10 form input:-ms-input-placeholder {
  color: #fff;
}
.sec10 form input.sub {
  background-color: #ffce5a;
  font-size: 0.1575rem;
  color: #161631;
  border: none;
}
.sec10 form span {
  font-size: 0.10125rem;
  color: #fff;
  display: block;
  text-align: center;
}