.title-box {
  width: 100%;
  height: 240px;
  background: url(../img/case.jpg) no-repeat;
  background-position: center;
  padding-top: 67px;
  color: #ffffff;
  text-align: center;
}

.title-box h2 {
  font-family: "AlimamaShuHeiTiBold";
  font-size: 50px;
  line-height: 50px;
  margin-bottom: 30px;
}

.title-box p {
  font-size: 24px;
  line-height: 24px;
  letter-spacing: 13px;
}

section {
  width: 1200px;
  margin: 0 auto;
  min-width: 1200px;
}

.part {
  padding-top: 60px;
}

.part > h3 {
  font-size: 20px;
  line-height: 20px;
  color: #000000;
  margin-bottom: 30px;
}

.students-case ul {
  flex-wrap: wrap;
  opacity: 0;
}

.students-case li {
  width: 280px;
  height: 260px;
  background-color: #ffffff;
  border-radius: 6px;
  position: relative;
  margin-right: 26px;
  margin-bottom: 27px;
}

.students-case li .name-box {
  height: 120px;
  background: url(../img/casebg1.png) no-repeat;
  background-size: 100%;
  color: #ffffff;
  padding-left: 26px;
  padding-top: 35px;
}

/* .students-case li:nth-child(1),
.students-case li:nth-child(2),
.students-case li:nth-child(3),
.students-case li:nth-child(4) {
  margin-top: 0;
} */
.students-case li:nth-child(4n) {
  margin-right: 0;
}
.students-case li:nth-child(2) .name-box {
  background-image: url(../img/casebg2.png);
}

.students-case li:nth-child(3) .name-box {
  background-image: url(../img/casebg3.png);
}

.students-case li:nth-child(4) .name-box {
  background-image: url(../img/casebg4.png);
}

.students-case li:nth-child(5) .name-box {
  background-image: url(../img/casebg5.png);
}

.students-case li:nth-child(6) .name-box {
  background-image: url(../img/casebg6.png);
}

.students-case li:nth-child(7) .name-box {
  background-image: url(../img/casebg7.png);
}

.students-case li:nth-child(8) .name-box {
  background-image: url(../img/casebg8.png);
}

.students-case li .name-box h4 {
  font-size: 24px;
  line-height: 24px;
  color: #ffffff;
  margin-bottom: 9px;
}

.students-case li .name-box p {
  width: 130px;
  font-size: 14px;
  line-height: 20px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.students-case li .bg {
  padding-left: 26px;
  padding-top: 28px;
}

.students-case li .bg > div {
  width: 90px;
  height: 24px;
  background-color: #f7e4b7;
  border-radius: 12px;
  font-size: 14px;
  color: #a38d57;
  margin-bottom: 22px;
}

.students-case li .bg p {
  width: 250px;
  font-size: 14px;
  line-height: 20px;
  color: #333333;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  /* 几行后显示不开省略 */
  -webkit-line-clamp: 2;
}

.students-case li img {
  position: absolute;
  top: 13px;
  right: 14px;
  width: 104px;
}

.students-video li {
  width: 380px;
}

.students-video li video {
  width: 100%;
  background-color: #333333;
}

.students-video li p {
  height: 60px;
  background-color: #ffffff;
  font-size: 16px;
  color: #333333;
}

.students-offer {
  margin-bottom: 60px;
}

.students-offer .tab-box {
  align-items: flex-start;
  height: 60px;
}

.students-offer .tab {
  width: 290px;
  height: 50px;
  background-color: #42579f;
  border-radius: 3px;
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  transition: all 0.3s;
  cursor: pointer;
}

.students-offer .tab.active {
  height: 60px;
  background-color: #2d3b6b;
  border-radius: 3px 3px 0px 0px;
  transition: all 0.3s;
}

.students-offer .offer {
  padding: 20px;
  background: #ffffff;
}

.students-offer .offer > div {
  display: none;
}

.students-offer .offer > div.active {
  display: block;
}

.students-offer thead {
  height: 60px;
  background-color: #e1e5f1;
  border-bottom: 10px solid #ffffff;
}

.students-offer th {
  font-size: 14px;
  color: #333333;
}

.students-offer th:nth-child(1) {
  width: 165px;
}

.students-offer th:nth-child(2) {
  width: 375px;
}

.students-offer th:nth-child(3) {
  width: 350px;
}

.students-offer th:nth-child(4) {
  width: 310px;
}

.students-offer td {
  border: none;
  background-color: #f5f7fa;
  font-size: 14px;
  height: 40px;
  color: #666666;
  border-right: 5px solid #ffffff;
}

.students-offer td:last-child {
  border-right: none;
}