@font-face {
  font-family: "SourceHanSerifCN-Heavy";
  src: url('../font/SourceHanSerifCN-Heavy.otf');
  font-display: swap;
}

.section_1 {
  font-size: 20px;
  padding-bottom: 120px;
}
.bg_wrap {
  display: block;
  width: 100%;
  border-radius: 12px;
  margin-bottom: 72px;
  margin-top: 64px;
}
.section_1>.title {
  font-size: 45px;
  font-weight: 800;
  color: #1a63de;
  font-family: "SourceHanSerifCN-Heavy";
  line-height: 1;
}
.section_1>.intro_block {
  margin-top: 38px;
  max-width: 1080px;
  padding: 36px 42px;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(246, 249, 255, 0.94));
  box-shadow: 0 12px 36px rgba(26, 99, 222, 0.08);
  border: 1px solid rgba(26, 99, 222, 0.12);
}
.section_1>.intro_block .intro_header h2 {
  margin: 0;
  font-size: 30px;
  line-height: 1.35;
  color: #1248a5;
  font-weight: 700;
}
.section_1>.intro_block .intro_content {
  margin-top: 24px;
}
.section_1>.intro_block .intro_content>p {
  margin: 0;
  color: rgba(0, 0, 0, 0.78);
  font-size: 22px;
  line-height: 1.88;
  text-align: justify;
  text-indent: 2em;
}
.section_1>.intro_block .intro_content>p:not(:first-child) {
  margin-top: 24px;
}
.section_1>.intro_block .mission_block {
  margin-top: 30px;
  padding: 24px 26px;
  border-radius: 12px;
  background: rgba(18, 72, 165, 0.06);
  border-left: 4px solid #1a63de;
}
.section_1>.intro_block .mission_block h3 {
  margin: 0;
  font-size: 24px;
  color: #1248a5;
  font-weight: 700;
}
.section_1>.intro_block .mission_block p {
  margin: 16px 0 0;
  color: rgba(0, 0, 0, 0.82);
  font-size: 20px;
  line-height: 1.8;
  text-indent: 2em;
}

@media screen and (max-width: 1200px) {
  .section_1 {
    padding-bottom: 80px;
  }
  .bg_wrap {
    margin-bottom: 48px;
    margin-top: 36px;
  }
  .section_1>.title {
    font-size: 36px;
  }
  .section_1>.intro_block {
    padding: 28px 30px;
  }
  .section_1>.intro_block .intro_header h2 {
    font-size: 25px;
  }
  .section_1>.intro_block .intro_content>p {
    font-size: 18px;
    line-height: 1.8;
  }
  .section_1>.intro_block .mission_block h3 {
    font-size: 21px;
  }
  .section_1>.intro_block .mission_block p {
    font-size: 17px;
  }
}

@media screen and (max-width: 768px) {
  .section_1>.title {
    font-size: 30px;
  }
  .section_1>.intro_block {
    margin-top: 24px;
    padding: 20px 16px;
    border-radius: 12px;
  }
  .section_1>.intro_block .intro_header h2 {
    font-size: 21px;
    line-height: 1.45;
  }
  .section_1>.intro_block .intro_content {
    margin-top: 18px;
  }
  .section_1>.intro_block .intro_content>p {
    font-size: 16px;
    line-height: 1.75;
    text-align: left;
  }
  .section_1>.intro_block .intro_content>p:not(:first-child) {
    margin-top: 16px;
  }
  .section_1>.intro_block .mission_block {
    margin-top: 22px;
    padding: 16px 14px;
    border-left-width: 3px;
  }
  .section_1>.intro_block .mission_block h3 {
    font-size: 18px;
  }
  .section_1>.intro_block .mission_block p {
    margin-top: 10px;
    font-size: 15px;
    line-height: 1.72;
  }
}