.rightint-case-list.main {
  padding: 70px 0;
}

.rightint-case-list .app-list h3 {
  font-size: 40px;
  color: #212121;
  font-weight: 700;
  line-height: 1;
  position: relative;
  z-index: 20;
}

.rightint-case-list .app-list h3::before {
  display: block;
  content: attr(data-tit);
  white-space: nowrap;
  color: #fff;
  position: absolute;
  left: 0;
  top: -38px;
  font-size: 98px;
  line-height: 1;
  z-index: -1;
  text-shadow: rgba(210, 217, 221, 0.75) 1px 0 0, rgba(210, 217, 221, 0.75) 0 1px 0, rgba(210, 217, 221, 0.75) -1px 0 0, rgba(210, 217, 221, 0.75) 0 -1px 0;
}

.rightint-case-list .app-list h3::after {
  display: block;
  content: '';
  width: 80px;
  height: 2px;
  background: var(--color-primary);
  margin: 10px auto 0 0;
}

.rightint-case-list .app-list>p {
  margin: 40px 0 0;
  line-height: 36px;
  font-size: 17px;
  color: #666;
}

.rightint-case-list .app-list ul {
  margin: 37px -20px 0;
  display: flex;
  /* justify-content: space-between; */
  flex-wrap: wrap;
}

.rightint-case-list .app-list ul li {
  width: 33.3333%;
  padding: 15px 20px;
}

.rightint-case-list .app-list ul li>a {
  position: relative;
  overflow: hidden;
  display: block;
}

.rightint-case-list .app-list ul li img {
  display: block;
  width: 100%;
  aspect-ratio: 1/ 1;
  object-fit: cover;
}

.rightint-case-list .app-list ul li .txt {
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  z-index: 10;
  padding: 0 34px 29px;
  transition: opacity 0.2s, transform 0.35s;
  display: flex;
  justify-content: flex-end;
  -webkit-flex-direction: column;
  flex-direction: column;
}

.rightint-case-list .app-list ul li .txt::after {
  content: "";
  background: var(--color-primary);
  opacity: 0.85;
  height: 0;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  transition: all 0.3s ease 0s;
}

.rightint-case-list .app-list ul li .txt>* {
  position: relative;
  z-index: 10;
}

.rightint-case-list .app-list ul li .txt h6 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}

.rightint-case-list .app-list ul li .txt p {
  font-size: 15px;
  color: #fff;
  line-height: 28px;
  height: 0;
  overflow: hidden;
  transition: all 0.5s ease 0s;
  margin: 15px 0 0;
}

.rightint-case-list .app-list ul li .txt .more {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  margin: 25px 0 0;
}

.rightint-case-list .app-list ul li .txt .more i {
  color: #fff;
  font-size: 12px;
  border-radius: 50%;
  width: 26px;
  height: 26px;
  border: 1px solid #fff;
  line-height: 24px;
  display: inline-block;
  text-align: center;
  margin-right: 20px;
}

.rightint-case-list .app-list ul li:hover .txt::after {
  height: 100%;
}

.rightint-case-list .app-list ul li:hover .txt p {
  height: 112px;
}

.rightint-case-list .app-list ul li:hover .more i {
  background: #FAFBFB;
  color: var(--color-primary);
  border-color: #FAFBFB;
}

@media screen and (max-width: 992px) {
  .rightint-case-list .app-list ul li .txt .more {
    display: none;
  }
}

@media screen and (max-width:768px) {
  .rightint-case-list.app-list h1 {
    text-align: center;
  }

  .rightint-case-list .app-list h1::before {
    font-size: 40px;
    left: 0;
    right: 0;
    top: -25px;
  }

  .rightint-case-list .app-list h1::after {
    margin: 15px auto 0;
  }

  .rightint-case-list .app-list ul {
    margin: 20px -10px 0;
  }

  .rightint-case-list .app-list ul li {
    padding: 10px;
  }

  .rightint-case-list .app-list ul li .txt {
    padding: 0 10px 5px;
  }

  .app-list ul li .txt h6 {
    font-size: 17px;
  }

  .rightint-case-list .app-list h3::before {
    font-size: 58px;
  }
}

@media screen and (max-width:480px) {
  .rightint-case-list .app-list ul {
    margin: 14px 0 0;
  }

  .rightint-case-list .app-list ul li {
    padding: 6px 0;
    width: 100%;
  }
}