.curtain {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 5;
  background-image: url('/img/cooperation_curtain.png');
  background-size: cover;
  background-position: center;
}

.curtain-title {
  position: absolute;
  color: white;
  font-size: 44px;
  font-weight: bold;
  left: 50%;
  top: calc(50% + 30px);
  transform: translate(-50%, -50%);
  white-space: nowrap;
}

.centers-stage {
  margin-top: 80px;
}

hr.wrap {
  margin-top: 100px;
}

.achievement-stage {
  margin-top: 100px;
  margin-bottom: 100px;
}

.achievement-title {
  color: rgb(51, 51, 51);
  font-size: 44px;
  font-weight: bold;
  text-align: center;
}

.achievement-content {
  margin-top: 40px;
  display: flex;
  gap: 40px;
}

.achievement-entry {
  padding: 60px;
  box-shadow: 0px 0px 15px rgba(6, 51, 145, 0.15);
  cursor: pointer;
  flex-grow: 1;
  width: 0;
}

.achievement-entry:hover .achievement-entry-title {
  color: #053391;
}

.achievement-entry-title {
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 20px;
}

.achievement-entry-content {
  font-size: 18px;
}