body {
  font-family: Source Han Serif SC;
  font-size: 16px;
}
.preloader {
  position: fixed;
  background-color: var(--ostech-black, #1B233B);
  background-position: center center;
  background-repeat: no-repeat;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9991;
  display: -webkit-box;
  display: flex;
  -webkit-box-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  align-items: center;
  text-align: center;
}
.preloader__image {
  -webkit-animation-fill-mode: both;
  animation-fill-mode: both;
  -webkit-animation-name: flipInY;
  animation-name: flipInY;
  -webkit-animation-duration: 2s;
  animation-duration: 2s;
  -webkit-animation-iteration-count: infinite;
  animation-iteration-count: infinite;
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 50% auto;
  width: 100%;
  height: 100%;
}

ul {
  list-style: none;
}

.main-header {
  padding: 10px 20px;
  background-color: #fff;
  display: none;
  position: sticky;
  top: 0;
  background: #1B233B;
  z-index: 9;
}
.main-header a, .nav-content a {
  color: #1D2129;
  text-decoration: none;
  font-weight: 600;
}
.main-header a {
  color: #fff;
}
.main-menu {
  margin-bottom: 0;
}

.main-header .main-menu_item {
  font-weight: bold;
  margin-right: 20px;
}

.mobile-menu {
  width: 40px;
  height: 40px;
}
.mobile-logo, .main-logo {
  width: 115px;
  height: auto;
}
.main-logo {
  margin-right: 20px;
}

.mobile-nav__wrapper {
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  background: #1B233B;
  z-index: 9;
}

.mobile-nav_list {
  position: fixed;
  left: -100%;
  top: 0;
  width: 100%;
  height: 100%;
  background: #fff;
  transition:  all .3s linear;
  z-index: 99;
}
.nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-close {
  width: 40px;
  height: 40px;
}
.nav-content {
  padding: 20px;
  padding-top: 0;
}

.nav-content .main-menu_item {
  padding: 20px 0;
  border-bottom: 1px solid #BDBDBD;
}
.nav-content .right-icon {
  width: 10px;
  object-fit: cover;
}

.show-nav_list {
  left: 0;
}

.nav-header {
  padding: 10px 20px;
  background: #1B233B;
}

.full-width {
  background-size: 100% 100%;
  background-repeat: no-repeat;
}

.c-header {
  min-height: 230px;
  margin-bottom: 40px;
  background: url('../images/bg1.jpg');
  background-size: cover;
  background-repeat: no-repeat;
}

.c-top {
  height: 40%;
  text-align:center;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items:center;
  color:#fff;
  font-size: 36px;
  position: relative;
}

.c-top p {
  margin: 0;
}

img {
  object-fit: cover;
}

.c-bto {
  height: 60%;
}

.star, .star1, .star2, .star3 {
  width: 40px;
  position: absolute;
}

.star {
  right: 7%;
  top: 2%;
}

.star1 {
  right: 3%;
  bottom: 3%;
}
.star2 {
  bottom: -40px;
  right: 40%;
}

.star3 {
  left: 5%;
  top: 5%;
}

.common-section {
  margin-bottom: 50px;
}

.h-center {
  display: flex;
  justify-content: center;
}
.h-ai-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.common-title1 {
  min-width: 30%;
  padding: 5px 10px;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #394788;
  margin-bottom: 20px;
}

.common-title1 .text {
  color: #fff;
  font-size: 20px;
  margin: 0 5px;
}

.common-title1 .h-slider {
  width: 15px;
  height: 1px;
  background: #fff;
}

.common-title2 {
  padding: 10px 0;
  background: #F6E2C1;
  margin-bottom: 20px;
}

.common-title2 .text {
  font-size: 24px;
  margin: 0 10px;
  color: #394788;
  font-weight: bold;
}
.p-title {
  font-size: .9rem;
  font-weight: bold;
}

.icon1, .icon2 {
  width: 18px;
}

.icon1 {
  margin-bottom: 10px;
}
.icon2 {
  margin-top: 10px;
}

.c-main {
  padding: 0 20px;
  padding-bottom: 40px;
}
.more {
  color: #394788;
  text-align: right;
  margin-bottom: 0;
  cursor: pointer;
}
.c-main-img {
  width: 80%;
  height: auto;
}

.container-xl {
  --bs-gutter-x: 0;
}



.common-title3 {
  padding: 20px 10px;
  border-radius: 20px;
  background-color: #FEF6E9;
  color: #000;
  position: relative;
  margin-bottom: 40px;
  padding: 0 20px;
  padding-bottom: 10px;
}

.top-title {
  padding: 10px;
  background-color: #3F4488;
  margin-top: -15px;
  margin-left: -21px;
  font-family: MiSans;
  font-weight: 500;
  font-size: .8rem;
  color: #fff;
  border-top-left-radius: 30px;
  border-bottom-right-radius: 30px;
  font-weight: bold;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.mani-footer {
  text-align: center;
  height: 80px;
  line-height: 80px;
  font-weight: 600;
  font-size: 13px;
  color: #524D5C;
  border-top: 1px solid #524D5C;
}

.bt-line {
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 1px solid #00000040;
}

.bt-line:nth-last-child(1) {
  border-bottom: 0;
  margin-bottom: 0;
}

.bt-line p:nth-last-child(1) {
  margin-bottom: 0;
}

.li-bt li {
  margin-bottom: 10px;
}

.item-head {
  justify-content: space-between;
}

.icon10 {
  width: 30px;
}

.question-item {
  padding: 20px 0;
  border-top: 1px solid #BDBDBD;
}

.mt-10 {
  margin-top: 10px;
}

.question-item:nth-last-child(1) {
  margin-bottom: 0px;
  border-bottom: 1px solid #BDBDBD;
}

.table-container {
  overflow-x: scroll;
  margin-bottom: 20px;
}
.table-container table {
  min-width: 1250px;
  border: 1px solid #BDBDBD;
}

.table-container table td {
  padding: 10px;
}

.table-container table tr {
  border-bottom: 1px solid #BDBDBD;
}

.table-container table td:nth-child(1) {
  width: 100px;
}
.table-container2 table td:nth-child(1) {
  width: auto;
}

.pro-logo-view {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 50px;
}

.line-pro {
  height: 40vw;
  margin-right: 20px;
}

/* @media screen */
@media screen and (max-width: 768px) {
  .main-header {
    display: none !important;
  }
  .mobile-nav__wrapper {
    display: flex !important;
  }
}
@media screen and (min-width: 769px) {
  .main-header {
    display: flex;
  }
  .mobile-nav__wrapper {
    display: none !important;
  }
  .c-header {
    min-height: 740px;
  }
}

@media screen and (max-width: 700px) {
  .container-xl {
    --bs-gutter-x: 0;
  }
  .bg1 {
    height: 100%;
  }
  .mobile-font {
    font-size: .8rem;
  }
}


@media screen and (min-width: 1450px) {
  
}

@media (min-width: 1024px) and (max-width: 1450px) {
  
}