html,
body,
h1,
h2,
h3,
h4,
h5,
h6,
div,
dl,
dt,
dd,
ul,
ol,
li,
p,
blockquote,
pre,
hr,
figure,
table,
caption,
th,
td,
form,
fieldset,
legend,
input,
button,
textarea,
menu {
  margin: 0;
  padding: 0;
}

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

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

caption,
th {
  text-align: left;
  font-weight: normal;
}

html,
body,
fieldset,
img,
iframe,
abbr {
  border: 0;
}

i,
cite,
em,
var,
address,
dfn {
  font-style: normal;
}

[hidefocus],
summary {
  outline: 0;
}

li {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6,
small {
  font-size: 100%;
}

sup,
sub {
  font-size: 83%;
}

pre,
code,
kbd,
samp {
  font-family: inherit;
}

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

textarea {
  overflow: auto;
  resize: none;
}

label,
summary {
  cursor: default;
}

a,
button {
  cursor: pointer;
}

h1,
h2,
h3,
h4,
h5,
h6,
em,
strong,
b {
  font-weight: bold;
}

del,
ins,
s,
a,
a:hover {
  text-decoration: none;
}

body,
textarea,
input,
button,
select,
keygen,
legend {
  font: 14px/1.14 "PingFang SC", "Microsoft YaHei", "微软雅黑", "MicrosoftYaHei", "Helvetica Neue", Helvetica, Arial, sans-serif, \5b8b\4f53;
  color: #000;
  outline: 0;
}

body {
  background: #fff;
}

html,
body {
  width: 100%;
  height: 100%;
}

a,
a:hover {
  color: #333;
}

a,
img {
  -webkit-touch-callout: none;
}

input,
textarea {
  margin: 0px;
  padding: 0px;
  outline: none;
  user-select: auto;
}

/* 重置默认样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  color: #333;
  background-color: #f5f7fa;
}

/* 容器样式 */
.container {
  max-width: 1440px;
  margin: 0 auto;
}

/* 头部区域样式 */
.header {
  height: 632px;
  background: #F4F8FF url(./images/header.png) no-repeat top right;
  background-size: auto 100%;
  padding: 150px 0 0 150px;
}

.header .logo {
  font-weight: bold;
  font-size: 60px;
  color: #272F3A;
  line-height: 60px;
}

.header .logo .brand {
  color: #0066ff;
}

.header .logo .bracket {
  color: #999;
}

.header .title {
  font-weight: 600;
  font-size: 56px;
  color: #272F3A;
  line-height: 60px;
  margin-top: 25px;
}

.header .desc {
  width: 582px;
  margin-top: 40px;
  font-weight: 600;
  font-size: 20px;
  color: #272F3A;
  line-height: 32px;
}

/* 下载按钮样式 */
.download-btn {
  margin-top: 37px;
  display: block;
  width: 200px;
  height: 48px;
  line-height: 48px;
  background: #005BFD;
  border-radius: 24px;
  font-weight: 600;
  font-size: 18px;
  color: #FFFFFF;
  text-align: center;
}

.download-btn:hover {
  background-color: #0052cc;
}

/* AI模型展示区域样式 */
.ai-models {
  height: 630px;
  padding-top: 140px;
  background: #FFF;
}

.section-title {
  text-align: center;
  font-weight: 600;
  font-size: 40px;
  color: #272E38;
  line-height: 40px;
}

.section-desc {
  text-align: center;
  margin-top: 24px;
  font-weight: 500;
  font-size: 20px;
  color: #272E38;
  line-height: 20px;
  opacity: 0.6;
}

.ai-models img {
  display: block;
  margin: 72px auto 0;
  height: 200px;
}

.model-list {
  display: flex;
  justify-content: space-between;
  gap: 40px;
}

.model-group {
  flex: 1;
  display: flex;
  gap: 20px;
}

.avatar img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
}

.model-item {
  background: white;
  padding: 20px;
  border-radius: 12px;
  margin-bottom: 15px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.model-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.model-item p {
  font-size: 14px;
  color: #666;
}

/* 功能特点区域样式 */
.features1 {
  height: 730px;
  background: #F4F8FF url(./images/features1.png) no-repeat center bottom;
  background-size: auto 560px;
  padding-top: 116px;
  text-align: center;
}

.features1 h2 {
  font-weight: 600;
  font-size: 40px;
  color: #272E38;
  line-height: 40px;
}

.features1 p {
  margin-top: 24px;
  font-weight: 500;
  font-size: 20px;
  color: #272E38;
  line-height: 20px;
  opacity: 0.6;
}

.features2 {
  height: 816px;
  background: #fff url(./images/features2.png) no-repeat 699px 120px;
  background-size: auto 651px;
  padding-top: 415px;
  padding-left: 190px;
}

.features2 h2 {
  font-weight: 600;
  font-size: 40px;
  color: #272E38;
  line-height: 40px;
}

.features2 p {
  width: 390px;
  margin-top: 16px;
  font-weight: 500;
  font-size: 20px;
  color: #272E38;
  line-height: 32px;
  opacity: 0.6;
}

.features3 {
  height: 816px;
  background: #fff url(./images/features3.png) no-repeat 150px 45px;
  background-size: auto 651px;
  padding-top: 340px;
  padding-right: 190px;
  text-align: right;
}

.features3 h2 {
  font-weight: 600;
  font-size: 40px;
  color: #272E38;
  line-height: 40px;
  text-align: right;
}

.features3 p {
  display: inline-block;
  width: 463px;
  margin-top: 16px;
  font-weight: 500;
  font-size: 20px;
  color: #272E38;
  line-height: 32px;
  opacity: 0.6;
  text-align: right;
}




/* 下载区域样式 */
.download-section {
  height: 568px;
  text-align: center;
  background: #F4F8FF url(./images/bottom.png) no-repeat center center;
  background-size: auto 440px;
  padding-top: 148px;
}

.download-section h2 {
  font-weight: 600;
  font-size: 40px;
  color: #272E38;
  line-height: 40px;
}

.download-section p {
  margin-top: 24px;
  opacity: 0.6;
  font-weight: 500;
  font-size: 20px;
  color: #272E38;
  line-height: 20px;
}

.download-section .download-btn {
  margin: 48px auto 0;
}