.bread .main .left {
  display: none;
}
.class_name {
  font-family: Poppins-SemiBold;
  font-weight: 600;
  font-size: 0.5rem;
  color: #000000;
  text-align: center;
}
.certificates {
  padding: 1.2rem 0 0.9rem;
  overflow: hidden;
  font-size: 0.18rem;
}
.certificates .certificates_box {
  margin-top: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  column-gap: 0.3rem;
  row-gap: 0.4rem;
}
.certificates .certificates_box .certificates_item {
  width: calc((100% - 0.9rem) / 4);
}
.certificates .certificates_box .certificates_item .certificates_img {
  width: 100%;
  height: 3.2rem;
  padding: 0.16rem;
  background: rgba(224, 224, 224, 0.18);
  border-radius: 0.05rem;
  border: 0.01rem solid rgba(116, 149, 26, 0.22);
  display: flex;
  align-items: center;
  justify-content: center;
}
.certificates .certificates_box .certificates_item .certificates_img>div{
    width: fit-content;
    max-width: 90%;
    height: fit-content;
    border-image: url(../img/honors_bor1.png) 20 / 12px round;
    padding: 20px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    margin: 0 auto;
    height: fit-content;
    max-height: 100%;
    background: #fcf7eb;
}
.certificates .certificates_box .certificates_item .certificates_img>div img {
  height: 100%;
  width: 100%;
  object-fit: contain;
  transition: all 0.3s ease-in-out;
  max-height: 2.4rem;
}
.certificates .certificates_box .certificates_item .certificates_img:hover {
  background: rgba(116, 149, 26, 0.05);
  border: 0.01rem solid #74951A;
}
.certificates .certificates_box .certificates_item .certificates_img:hover img {
  transform: scale(1.05);
}
.certificates .certificates_box .certificates_item .certificates_title {
  margin-top: 0.18rem;
  text-align: center;
  font-family: Poppins-Regular;
  font-weight: 400;
  font-size: 0.2rem;
  color: #5A5A5A;
}
.certificates .certificates_box .certificates_item:hover .certificates_title {
  color: #74951A;
}
/* 弹窗样式 */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}
.modal .close-btn {
  position: absolute;
  top: 0.58rem;
  right: 0.83rem;
  width: 0.5rem;
  height: 0.5rem;
  background: url(../img/close_icon2.png) center no-repeat;
  background-size: contain;
  cursor: pointer;
}
.modal .nav-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  background: rgba(255, 255, 255, 0.23);
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
}
.modal .nav-arrow img {
  width: 0.07rem;
  height: 0.12rem;
  object-fit: contain;
}
.modal .nav-arrow:hover {
  background: #A6CE39;
}
.modal .nav-arrow:hover img {
  filter: brightness(0) invert(1);
}
.modal .prev {
  left: 0.83rem;
}
.modal .next {
  right: 0.83rem;
}
.modal .modal-content {
  position: relative;
  max-width: 90%;
  max-height: 90%;
  display: flex;
  flex-wrap: wrap;
  flex-direction: column;
  align-content: center;
}
.modal .modal-content .modal-image {
  max-width: 11rem;
  min-width: 5.3rem;
  max-height: 80vh;
  width: fit-content;
  object-fit: contain;
  border-image: url(../img/honors_bor1.png) 20 / 12px round;
  padding: 20px;
  background: #fcf7eb;
  margin-bottom: 20px;
}
.modal .modal-content .modal-title {
  width: 100%;
  text-align: center;
  font-family: Poppins-SemiBold;
  font-weight: 600;
  font-size: 0.3rem;
  color: #FFFFFF;
}





/* mobile-adapt: certificate page tablet uses three-column grid */
@media screen and (max-width: 1042px) {
  .class_name {
    font-size: 36px;
  }
  .certificates {
    padding: 80px 0;
  }
  .certificates .certificates_box {
    margin-top: 54px;
    gap: 30px 20px;
  }
  .certificates .certificates_box .certificates_item {
    width: calc((100% - 40px) / 3);
  }
  .certificates .certificates_box .certificates_item .certificates_img {
    height: 260px;
  }
  .certificates .certificates_box .certificates_item .certificates_img>div{
      padding: 10px;
  }
  .certificates .certificates_box .certificates_item .certificates_title {
    font-size: 16px;
  }
  .modal .close-btn {
    top: 34px;
    right: 34px;
  }
  .modal .prev {
    left: 34px;
  }
  .modal .next {
    right: 34px;
  }
  .modal .modal-content .modal-image {
    min-width: 0;
    max-width: 82vw;
  }
}

/* mobile-adapt: certificate page phone uses two columns and compact modal */
@media screen and (max-width: 768px) {
  .class_name {
    font-size: 28px;
  }
  .certificates {
    padding: 54px 0;
  }
  .certificates .certificates_box {
    margin-top: 36px;
    gap: 24px 14px;
  }
  .certificates .certificates_box .certificates_item {
    width: calc(50% - 7px);
  }
  .certificates .certificates_box .certificates_item .certificates_img {
    height: 226px;
    padding: 6px;
  }
  .certificates .certificates_box .certificates_item .certificates_title {
    margin-top: 12px;
    font-size: 14px;
  }
  .modal .close-btn {
    top: 20px;
    right: 20px;
    width: 36px;
    height: 36px;
  }
  .modal .nav-arrow {
    width: 36px;
    height: 36px;
  }
  .modal .prev {
    left: 12px;
  }
  .modal .next {
    right: 12px;
  }
  .modal .modal-content {
    max-width: 86%;
  }
  .modal .modal-content .modal-image {
    max-width: 100%;
    max-height: 70vh;
    min-width: 0;
  }
  .modal .modal-content .modal-title {
    margin-top: 12px;
    font-size: 20px;
  }
}