* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  background-color: #ffffff;
  color: #333333;
  line-height: 1.6;
}

section {
  text-align: center;
}
.inner {
  width: 1200px;
}
h1 {
  font-size: 45px;
}

.part1 {
  text-align: center;
  background-color: #f6f8fe;
}
.part1 .inner {
  margin: 0 auto;
  position: relative;
  padding-top: 120px;
  padding-bottom: 90px;
}

.part1 .inner .logo {
  position: absolute;
  top: 20px;
  left: 20px;
  width: 80px;
  height: 80px;
  background-color: #ff6600;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 24px;
}

.part1 .inner h1 {
  font-weight: bold;
  margin-bottom: 10px;
  color: #333;
}

.part1 .inner .subtitle {
  font-size: 23px;
  color: #666;
  margin-bottom: 60px;
}

.part1 .inner .download-btn {
  display: inline-block;
  background-color: #2253f4;
  color: white;
  text-decoration: none;
  padding: 12px 60px;
  border-radius: 25px;
  font-size: 18px;
  font-weight: bold;
  transition: background-color 0.3s;
}

.part1 .inner .download-btn:hover {
  background-color: #2c5aa0;
}

.part2 {
  text-align: center;
  background-color: #ffffff;
}
.part2 .inner {
  margin: 0 auto;
  padding-top: 60px;
  padding-bottom: 60px;
}
.part2 .inner h1 {
  margin-bottom: 30px;
}
.part2 .inner .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
}
.part2 .inner .wrap img {
  display: block;
  width: 500px;
  height: 350px;
}
.part2 .inner .wrap .feature-text {
  width: 500px;
}

.feature-section {
  background-color: #f8f9fa;
  position: relative;
}

.feature-content {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
}

.feature-image {
  object-fit: contain;
}

.feature-text {
  text-align: left;
}

h2 {
  font-size: 28px;
  margin-bottom: 20px;
  color: #333;
}

.feature-description {
  font-size: 16px;
  color: #666;
  line-height: 1.8;
  margin-bottom: 15px;
}

.part3 {
  background-color: #f4f3f7;
  padding-bottom: 55px;
  padding-top: 55px;
}
.part3 .download-btn {
  display: inline-block;
  background-color: #2253f4;
  color: white;
  text-decoration: none;
  padding: 10px 55px;
  border-radius: 25px;
  font-size: 18px;
  font-weight: bold;
  transition: background-color 0.3s;
}
.part3 .feature-description {
  margin-bottom: 40px;
  margin-top: 20px;
}
.part3 .download-btn:hover {
  background-color: #2c5aa0;
}

footer {
  background-color: #fff;
  padding: 30px 20px;
  text-align: center;
  border-top: 1px solid #eee;
}

.copyright {
  font-size: 12px;
  color: #999;
}

.license-info {
  font-size: 12px;
  color: #999;
  margin-top: 5px;
}

@media (max-width: 768px) {
  .inner {
    width: 100%;
  }
  h1 {
    font-size: 28px;
  }
  h2 {
    font-size: 20px;
  }

  .part1 .inner {
   
    padding: 100px 10px 50px;
  }
  .part2 .inner {
 
    padding: 20px 10px;
  }
}