.milestone-swiper-year {
  width: 100vw;
  margin-left: calc(-50vw + 50%);
  padding: 0 15px;
}

@media (min-width: 768px) and (max-width: 1199.98px) {
  .milestone-swiper-year {
    padding: 0 25px;
  }
}

@media (min-width: 1200px) {
  .milestone-swiper-year {
    padding: 0 max(50px, calc(50vw - 750px));
  }
}

.milestone-swiper-year {
  height: 760px;
  position: relative;
  overflow: hidden;
  max-height: calc(100vh - 190px);
  margin-bottom: 100px
}

.milestone-content {
  display: flex;
  height: 100%;
  width: 100%;
  box-sizing: border-box
}

.milestone-text {
  flex: 0 0 50%;
  display: flex;
  flex-direction: column;
  box-sizing: border-box
}

.milestone-year {
  font-weight: bold;
  margin: 0 0 1rem;
  position: absolute;
  top: 100px;
  left: 150px;
  z-index: 2
}

.milestone-event-title {
  position: absolute;
  top: 180px;
  left: 150px;
  max-width: calc(40% - 100px);
  font-size: 1.25rem;
  margin: .5rem 0;
  z-index: 3
}

.milestone-event-title a {
  color: #003366;
}

.milestone-event-title:hover a {
  color: #996600;
}

.milestone-event-title a:after {
  display: block;
  content: " \2794";
  transition: all .3s;
  font-size: 30px;
  margin-top: 15px;
}

.milestone-event-title:hover a:after {
  margin-left: 10px;
}

.milestone-media {
  flex: 0 0 50%;
  position: relative;
  box-sizing: border-box;
  margin-bottom: 40px;
}

.milestone-swiper-events {
  height: 100vh;
  width: 100%
}

.milestone-swiper-events .swiper-slide {
  width: 100% !important
}

.milestone-swiper-thumbs {
  position: absolute;
  bottom: 0;
  left: 150px;
  width: 400px;
  height: 80px
}

.milestone-swiper-thumbs .swiper-slide img {
  cursor: pointer;
  transition: transform .3s
}

.milestone-swiper-thumbs .swiper-slide:hover img {
  transform: scale(1.1)
}

.milestone-swiper-year>.swiper-wrapper>.swiper-slide:first-child .milestone-media,
.milestone-year,
.milestone-event-title,
.milestone-swiper-thumbs .swiper-slide {
  opacity: 0
}

.milestone-swiper-year>.swiper-wrapper>.swiper-slide:first-child .milestone-media,
.swiper-slide-visible .milestone-year,
.swiper-slide-visible .milestone-event-title,
.swiper-slide-visible .milestone-swiper-thumbs .swiper-slide {
  animation: fadeIn 1s ease forwards
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(100%)
  }

  to {
    opacity: 1;
    transform: translateY(0)
  }
}

.swiper-slide-visible .milestone-year {
  animation-delay: 250ms
}

.swiper-slide-visible .milestone-event-title {
  animation-delay: 500ms
}

.swiper-slide-visible .milestone-swiper-thumbs .swiper-slide {
  animation-delay: 750ms
}

.milestone-event-img {
  width: 100%;
  height: 100%;
  object-fit: contain
}

.thumbnail-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .6
}

.swiper-slide-thumb-active .thumbnail-img {
  opacity: 1
}

.swiper-slide {
  display: flex;
  flex-direction: column;
  align-items: center;
  box-sizing: border-box;
  width: 100%
}

.milestone-swiper-year-pagination {
  display: flex;
  flex-direction: column;
  position: absolute;
  right: auto !important;
  top: 50% !important;
  left: max(25px, calc(50vw - 910px + 25px)) !important;
  transform: translateY(-50%);
  width: 100px !important;
  align-items: center
}

.milestone-swiper-year-pagination .swiper-pagination-bullet {
  display: block;
  width: auto;
  height: 30px;
  line-height: 30px;
  text-align: center;
  font-size: 1.25rem;
  color: #996600;
  border-radius: 0;
  background: transparent;
  opacity: 1;
  transition: all .3s
}

.milestone-swiper-year-pagination .swiper-pagination-bullet:hover {
  opacity: 1;
  font-weight: bold;
}

.milestone-swiper-year-pagination .swiper-pagination-bullet-active {
  opacity: 1;
  font-weight: bold;
  font-size: 2rem;
  transform: translateX(20px);
  padding-left: 20px
}

.milestone-swiper-year-pagination .swiper-pagination-bullet-active:before {
  content: "";
  position: absolute;
  width: 1000px;
  height: 2px;
  background: #996600;
  right: 100%;
  top: 50%;
}

.milestone-swiper-year-pagination .swiper-pagination-bullet-active:after {
  content: '';
  width: 10px;
  height: 10px;
  background: #996600;
  border-radius: 50%;
  position: absolute;
  left: 0;
  top: calc(50% - 4px);
}

@media only screen and (max-width: 767px) {
  .milestone-content {
    flex-direction: column
  }

  .milestone-swiper-year {
    max-height: 100%;
  }

  .milestone-media,
  .milestone-event-title,
  .milestone-year {
    transform: translateY(-100px)
  }

  .milestone-media {
    top: 15px;
    padding-left: 100px;
  }

  .milestone-event-title {
    max-width: 80%
  }

  .milestone-year {
    top: 30px;
    left: 60px
  }

  .milestone-event-title {
    top: 90px;
    left: 60px
  }

  .milestone-swiper-thumbs {
    left: 60px;
  }
}


/* block 2 */
.milestone-swiper-year.block-2 {
  height: auto;
  max-height: none;
  padding-top: 100px;
  margin-bottom: unset;
}

.milestone-swiper-year.block-2 .background-left-bottom-circle {
  position: absolute;
  bottom: -0px;
  left: 0px;
  z-index: -1;
  max-width: 50%;
}

.milestone-swiper-year.block-2 .background-right-top-circle {
  position: absolute;
  top: 0px;
  right: 0px;
  z-index: -1;
  max-width: 50%;
}

.milestone-swiper-year.block-2 .gsap-container {
  position: relative;
  display: flex;
}

.milestone-swiper-year.block-2 .gsap-sidebar-container {
  /* position: absolute; */
  /* top: 0px; */
  width: 20%;
  /* height: 100%; */
  margin: 50px 0px;
}

.milestone-swiper-year.block-2 .pin-spacer {
  width: 100% !important;
  inset: unset !important;
  height: fit-content !important;
  padding-bottom: 0px !important;
}

body.scrolled .milestone-swiper-year.block-2 .gsap-sidebar {
  position: fixed !important;
  top: calc(170px + var(--drupal-displace-offset-top, 0px)) !important;
}

.milestone-swiper-year.block-2 .gsap-sidebar {
  position: sticky !important;
  top: 0 !important;
  left: unset !important;
  transform: unset !important;
  height: 75vh !important;
  display: flex;
  flex-direction: column;
  overflow: auto;

  width: 100% !important;
  max-width: 100% !important;
}

.milestone-swiper-year.block-2 .milestone-year-item-group {
  flex-direction: column;
  height: 0px;
  max-height: 0px;
  overflow: hidden;
  transition: all 0.3s;
  opacity: 0;
  display: flex;
}

.milestone-swiper-year.block-2 .milestone-year-item-group:has(.milestone-year-item.active):not(.expand) {
  max-height: 45px;
  height: 45px;
  opacity: 1;
}

.milestone-swiper-year.block-2 .milestone-year-item-group.expand {
  height: fit-content;
  max-height: 500px;
  overflow: visible;
  opacity: 1;
}

.milestone-swiper-year.block-2 .milestone-year-item {
  position: relative;
  width: fit-content;
  padding-bottom: 20px;
}

.milestone-swiper-year.block-2 .milestone-year-item-group:not(.expand) .milestone-year-item:not(.active) {
  pointer-events: none;
  opacity: 0;
}

.milestone-swiper-year.block-2 .milestone-year-item-group:not(.expand) .milestone-year-item.active {
  opacity: 1;
  order: -1;
}

.milestone-swiper-year.block-2 .milestone-year-item.group-year-title::after {
  content: "...";
  position: absolute;
  right: -10px;
  bottom: 10px;
}

.milestone-swiper-year.block-2 .milestone-year-item.group-year-title.expand::after {
  display: none;
}

.milestone-swiper-year.block-2 .milestone-year-item:not(:first-child)::before {
  content: "";
  position: absolute;
  width: 2px;
  height: 10px;
  top: -20px;
  left: 50%;
}

.milestone-swiper-year.block-2 .milestone-year-item.active {
  color: #fbb03b;
  font-weight: bold;
}

.milestone-swiper-year.block-2 .gsap-content {
  /* margin-left: 20%; */
  width: 80%;
}

.milestone-swiper-year.block-2 .milestone-group {
  padding-top: calc(120px + var(--drupal-displace-offset-top, 0px) + 40px) !important;
  margin-top: calc(-120px - var(--drupal-displace-offset-top, 0px) - 40px) !important;
}

.milestone-swiper-year.block-2 .milestone-content {
  margin-bottom: 40px;
  display: block;
}

.milestone-swiper-year.block-2 .milestone-content>a {
  display: flex;
}

.milestone-swiper-year.block-2 .milestone-media {
  margin-bottom: 0px;
  transform: unset;
  padding-left: 0px;
  top: 0px;
}

.milestone-swiper-year.block-2 .milestone-text {
  padding-left: unset;
  justify-content: end;
}

.milestone-swiper-year.block-2 .milestone-event-date {
  color: #003366;
  font-weight: 900;

}

.milestone-swiper-year.block-2 .milestone-event-title {
  position: relative;
  top: 0px;
  left: 0px;
  max-width: calc(100% - 50px);
  font-weight: 600;
  opacity: 1;
  transform: unset;
}

.milestone-swiper-year.block-2 .milestone-event-title span:after {
  display: none;
}

.milestone-swiper-year-mobile-sidebar {
  position: sticky;
  top: calc(100px + var(--drupal-displace-offset-top, 0px));
  width: 100vw;
  margin-left: -15px;
  background-color: #f4f4f4;
  padding: 20px 35px;
  z-index: 4;
  display: none;
}

.milestone-swiper-year-mobile-sidebar .swiper {
  padding: 0;
  position: relative;
  overflow: hidden;
}

.milestone-swiper-year-mobile-sidebar .swiper-button-prev,
.milestone-swiper-year-mobile-sidebar .swiper-button-next {
  aspect-ratio: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.milestone-swiper-year-mobile-sidebar .swiper-button-prev::after,
.milestone-swiper-year-mobile-sidebar .swiper-button-next::after {
  content: " ";
  display: block;
  width: 18px;
  height: auto;
  aspect-ratio: 1;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

.milestone-swiper-year-mobile-sidebar .swiper-button-prev {
  left: 0;
}
.milestone-swiper-year-mobile-sidebar .swiper-button-prev::after {
    background-image: url(/themes/custom/hkust35a/images/arrow-left.png);
}

.milestone-swiper-year-mobile-sidebar .swiper-button-next {
  right: 0;
}
.milestone-swiper-year-mobile-sidebar .swiper-button-next::after {
    background-image: url(/themes/custom/hkust35a/images/arrow-right.png);
}

.milestone-swiper-year-mobile-sidebar .swiper-navigation-icon {
  display: none;
}


.milestone-swiper-year-mobile-sidebar .mobile-milestone-year-item.swiper-slide-active {
  color: #fbb03b;
  font-weight: bold;
}

@media only screen and (max-width: 767px) {

  .milestone-swiper-year-mobile-sidebar {
    display: block;
  }

  .milestone-swiper-year.block-2 .gsap-sidebar-container {
    display: none;
  }

  .milestone-swiper-year.block-2 .gsap-content {
    width: 100%;
  }

  .milestone-swiper-year.block-2 .milestone-content>a {
    flex-direction: column;
  }

  .milestone-swiper-year.block-2 .milestone-text {
    margin-bottom: 0px;
  }

  .milestone-swiper-year.block-2 .milestone-event-date {
    font-size: 20px;
  }

  .milestone-swiper-year.block-2 .milestone-event-title {
    font-size: 18px;
  }
}

/* Block 3 */
.milestone-swiper-year.block-3 {
  height: auto;
  max-height: none;
  padding-top: 100px;
  margin-bottom: unset;
}

.milestone-swiper-year.block-3 .background-homepage {
  position: absolute;
  bottom: 0px;
  left: 0px;
  z-index: -1;
  min-width: 100%;
  height: 100%;
  overflow: hidden;
  padding-top: 200px;
}

.milestone-swiper-year.block-3 .background-homepage>img {
  height: 100%;
}

.milestone-swiper-year.block-3 .milestone-swiper-year-pagination {
  top: 300px !important;
  transform: unset;
  gap: 10px;
  left: 0px !important;
}

.milestone-swiper-year.block-3 .milestone-swiper-year-pagination .swiper-pagination-bullet {
  color: #003366;
  padding-left: max(175px, calc(50vw - 910px + 175px));
}

.milestone-swiper-year.block-3 .milestone-swiper-year-pagination .swiper-pagination-bullet.swiper-pagination-bullet-active {
  color: #fbb03b;
  padding-left: max(300px, calc(50vw - 910px + 300px));
}

.milestone-swiper-year.block-3 .milestone-swiper-year-pagination .swiper-pagination-bullet.swiper-pagination-bullet-active::before {
  background: #fbb03b;
  left: 0px;
  width: max(275px, calc(50vw - 910px + 275px));
}

.milestone-swiper-year.block-3 .milestone-swiper-year-pagination .swiper-pagination-bullet.swiper-pagination-bullet-active::after {
  background: white;
  border: 2px solid #fbb03b;
  left: max(275px, calc(50vw - 910px + 275px));
}

.milestone-swiper-year.block-3 .milestone-more {
  position: absolute;
  bottom: 200px;
  color: #003366;
  left: max(90px, calc(50vw - 910px + 90px));
  border-bottom: 1px solid rgba(255, 212, 0, 0.5019607843);
  padding-bottom: 5px;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  z-index: 2;
}

.milestone-swiper-year.block-3 .milestone-more:after {
  content: " ➔";
}

.milestone-swiper-year.block-3 .milestone-events {
  width: 100%;
}

.milestone-swiper-year.block-3 .milestone-content {
  height: auto;
  margin-bottom: 200px;
}

.milestone-swiper-year.block-3 .milestone-text {
  padding-left: 150px;
  justify-content: end;
}

.milestone-swiper-year.block-3 .milestone-event-date {
  color: #003366;
  font-weight: 900;
}

.milestone-swiper-year.block-3 .milestone-event-title {
  position: relative;
  top: 0px;
  max-width: 50%;
  left: 0px;
  max-width: calc(100% - 50px);
  font-size: 1.75rem;
  font-weight: 600;
}

.milestone-swiper-year.block-3 .milestone-event-title a:after {
  display: none;
}

.milestone-swiper-year.block-3 .milestone-media {
  margin-bottom: 0px;
}


@media only screen and (max-width: 1920px) {
  .milestone-swiper-year.block-3 .milestone-swiper-year-pagination .swiper-pagination-bullet {
    color: #003366;
    padding-left: 25px;
  }

  .milestone-swiper-year.block-3 .milestone-swiper-year-pagination .swiper-pagination-bullet.swiper-pagination-bullet-active {
    color: #fbb03b;
    padding-left: 75px;
  }

  .milestone-swiper-year.block-3 .milestone-swiper-year-pagination .swiper-pagination-bullet.swiper-pagination-bullet-active::before {
    background: #fbb03b;
    left: 0px;
    width: 50px;
  }

  .milestone-swiper-year.block-3 .milestone-swiper-year-pagination .swiper-pagination-bullet.swiper-pagination-bullet-active::after {
    background: white;
    border: 2px solid #fbb03b;
    left: 50px;
  }

  .milestone-swiper-year.block-3 .milestone-more {
    position: absolute;
    color: #003366;
    left: 50px;
    max-width: 100px;
  }
}

@media only screen and (max-width: 767px) {
  .milestone-swiper-year.block-3 .milestone-media {
    transform: unset;
    padding-left: 150px;
  }
}

@media only screen and (max-width: 500px) {
  .milestone-swiper-year.block-3 {
    padding-top: 50px;
  }

  .milestone-swiper-year.block-3 .milestone-more {
    position: relative;
    bottom: 0px;
    left: 40px;
    max-width: unset;
    width: fit-content;
    margin-bottom: 50px;
  }

  .milestone-swiper-year.block-3 .swiper-pagination {
    position: relative;
    top: 0px !important;
    margin-bottom: 20px;
  }

  .milestone-swiper-year.block-3 .milestone-content {
    margin-bottom: 50px;
  }

  .milestone-swiper-year.block-3 .milestone-text {
    padding-left: 0px;
    padding: 0px 10px;
  }

  .milestone-swiper-year.block-3 .milestone-media {
    padding-left: 0px;
    padding: 0px 10px;
  }
}