body.page-thomas-home .project-accordion {
  position: relative;
  width: 100%;
  max-width: none;
  min-height: 100svh;
  margin: 0;
  padding: clamp(92px, 10svh, 112px) 0 clamp(68px, 8svh, 92px);
  overflow: hidden;
  color: #172130;
  background: #fff;
  border-top: 1px solid rgba(183, 149, 82, .2);
}

.project-accordion-shell {
  width: var(--page);
  min-height: calc(100svh - clamp(160px, 18svh, 204px));
  margin-inline: auto;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: clamp(24px, 3svh, 34px);
}

.project-accordion-heading {
  display: block;
}

.project-accordion-heading h2 {
  max-width: 840px;
  margin: 0;
  color: #172130;
  font-family: var(--font-subtitle);
  font-size: clamp(34px, 3.2vw, 50px);
  font-weight: 400;
  line-height: 1.03;
  letter-spacing: -.035em;
  text-transform: none;
  text-wrap: balance;
}

.project-accordion-track {
  min-height: 0;
  height: min(610px, 65svh);
  max-height: 65vh;
  max-height: 65svh;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(12px, 1.25vw, 20px);
}

.project-accordion-card {
  position: relative;
  min-width: 0;
  height: 100%;
  padding: 0;
  overflow: hidden;
  color: #fff;
  background: #161816;
  border: 1px solid rgba(23, 33, 48, .12);
  border-radius: 3px;
  box-shadow: 0 16px 36px rgba(31, 37, 37, .09);
  cursor: pointer;
  text-align: left;
  isolation: isolate;
}

.project-accordion-card:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
}

.project-accordion-card > img {
  position: absolute;
  z-index: -2;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: 65vh !important;
  max-height: 65svh !important;
  object-fit: cover;
  transform: scale(1.015);
  transform-origin: 50% 50%;
  transition: transform .8s cubic-bezier(.16, 1, .3, 1), filter .45s ease;
}

.project-accordion-card:is(:hover, :focus-visible) > img {
  filter: saturate(1.04) contrast(1.02);
  transform: scale(1.045);
}

.project-accordion-overlay {
  position: absolute;
  z-index: -1;
  inset: 0;
  /* Ba ảnh dự án sáng tối rất khác nhau (ảnh bán dẫn rất tối, ảnh Age Care rất
     sáng), nên lớp phủ phải đủ đậm ở phần dưới để chữ đọc được trên cả hai. */
  background:
    linear-gradient(180deg, rgba(6, 9, 8, 0) 26%, rgba(6, 9, 8, .5) 52%, rgba(6, 9, 8, .84) 76%, rgba(6, 9, 8, .96) 100%),
    rgba(5, 7, 6, .08);
  opacity: 1;
  transition: background-color .45s ease;
}

.project-accordion-content {
  position: absolute;
  left: clamp(20px, 2vw, 30px);
  right: clamp(20px, 2vw, 30px);
  bottom: clamp(24px, 3.2vh, 36px);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  opacity: 1;
  transform: translateY(0);
}

.project-accordion-type {
  margin-bottom: 0;
  color: #e6c77e;
  font-family: var(--font-time);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
}

/* Gạch vàng mảnh ngăn nhãn lĩnh vực với tiêu đề; dài ra khi rê chuột. */
.project-accordion-rule {
  display: block;
  width: 32px;
  height: 1px;
  margin: 12px 0;
  background: #e6c77e;
  transition: width .6s cubic-bezier(.22, 1, .36, 1);
}

.project-accordion-card:is(:hover, :focus-visible) .project-accordion-rule { width: 56px; }

.project-accordion-title {
  max-width: 390px;
  font-family: var(--font-subtitle);
  /* Khóa tối đa ba dòng: tiêu đề dài ngắn khác nhau thì ba thẻ vẫn cân nhau.
     Cỡ chữ đặt thẳng bằng px chứ không theo tỉ lệ; typography-scale.js được
     dặn bỏ qua nhóm này, nếu không 22px bị làm tròn lên 26px. */
  display: -webkit-box;
  overflow: hidden;
  font-size: 22px;
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: -.025em;
  text-transform: uppercase;
  text-wrap: balance;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}
.project-accordion-status {
  display: none;
}

@media (max-width: 980px) and (min-width: 621px) {
  body.page-thomas-home .project-accordion {
    padding-top: 88px;
  }

  .project-accordion-shell {
    width: calc(100% - 40px);
  }

  .project-accordion-track {
    height: clamp(460px, 60svh, 560px);
    gap: 10px;
  }

  .project-accordion-heading h2 {
    font-size: clamp(30px, 4.5vw, 42px);
  }

  .project-accordion-content {
    left: 17px;
    right: 17px;
    bottom: 22px;
  }

  /* Thẻ ở khổ này là hình vuông chỉ ~250px, nên tiêu đề dài phải nhỏ lại thì
     khối chữ mới nằm gọn trong thẻ thay vì tràn lên quá mép trên. */
  .project-accordion-title {
    font-size: clamp(16px, 2.1vw, 19px);
    line-height: 1.3;
  }
}

@media (max-width: 620px) {
  body.page-thomas-home .project-accordion,
  main > section.project-accordion {
    width: 100vw !important;
    max-width: none !important;
    margin-inline: 0 !important;
    min-height: 0;
    padding: 76px 0 calc(64px + env(safe-area-inset-bottom));
    overflow: hidden;
  }

  .project-accordion-shell {
    width: min(calc(100vw - 32px), 358px);
    max-width: 358px;
    min-height: 0;
    grid-template-rows: auto auto;
    gap: 16px;
    overflow: visible;
  }

  .project-accordion-heading h2 {
    max-width: none;
    text-align: center;
    font-size: clamp(27px, 7.7vw, 32px);
    line-height: 1.06;
  }

  .project-accordion-track {
    width: 100%;
    min-width: 0;
    height: clamp(468px, 68svh, 520px);
    position: relative;
    display: block;
    padding: 0;
    overflow: visible;
    --deck-drag-x: 0px;
    --deck-drag-rotate: 0deg;
    --deck-active-scale: 1;
    touch-action: pan-y;
    cursor: grab;
  }

  .project-accordion-track.is-dragging {
    cursor: grabbing;
  }

  .project-accordion-track:not(.is-animating) .project-accordion-card,
.project-accordion-track:not(.is-animating) .project-accordion-card > img,
.project-accordion-track:not(.is-animating) .project-accordion-content {
    transition: none;
  }

  .project-accordion-card {
    position: absolute;
    top: 0;
    left: 50%;
    width: min(calc(100vw - 68px), 322px);
    min-width: min(calc(100vw - 68px), 322px);
    flex: 0 0 min(calc(100vw - 68px), 322px);
    height: 100%;
    border-radius: 8px;
    color: #172130;
    background: #fff;
    box-shadow: 0 14px 32px rgba(31, 37, 37, .12);
    opacity: .5;
    transform-origin: center center;
    transform: translate3d(-50%, 18px, 0) scale(.9);
    transition: transform .76s cubic-bezier(.22, 1, .36, 1), opacity .42s ease, filter .42s ease, box-shadow .76s cubic-bezier(.22, 1, .36, 1);
    will-change: transform, opacity;
  }

  .project-accordion-card[data-coverflow-position="-1"] {
    z-index: 2;
    opacity: .58;
    filter: saturate(.8) brightness(.94);
    transform: translate3d(calc(-50% - 23px), 14px, 0) scale(.94) rotate(-2deg);
  }

  .project-accordion-card[data-coverflow-position="1"] {
    z-index: 1;
    opacity: .45;
    filter: saturate(.76) brightness(.92);
    transform: translate3d(calc(-50% + 27px), 20px, 0) scale(.9) rotate(2.4deg);
  }

  .project-accordion-card[data-coverflow-position="0"],
  .project-accordion-card.is-active {
    z-index: 3;
    opacity: 1;
    filter: none;
    box-shadow: 0 22px 46px rgba(31, 37, 37, .18);
    transform: translate3d(calc(-50% + var(--deck-drag-x)), 0, 0) scale(var(--deck-active-scale)) rotate(var(--deck-drag-rotate));
  }

  .project-accordion-card > img,
  .project-accordion-card:is(:hover, :focus-visible) > img {
    z-index: 0;
    height: 52%;
    max-height: none !important;
    filter: none;
    transform: scale(1.06);
    transition: transform .9s cubic-bezier(.16, 1, .3, 1);
  }

  .project-accordion-card.is-active > img,
  .project-accordion-card.is-active:is(:hover, :focus-visible) > img {
    transform: scale(1.015);
  }

  .project-accordion-overlay {
    z-index: 1;
    height: 52%;
    bottom: auto;
    background: linear-gradient(180deg, rgba(6, 9, 8, .03), rgba(6, 9, 8, .28));
  }

  .project-accordion-content {
    left: 20px;
    right: 20px;
    top: 52%;
    bottom: 0;
    z-index: 2;
    padding: 20px 0 18px;
    background: #fff;
    opacity: .72;
    filter: blur(2px);
    clip-path: inset(10% 0 0);
    transform: translateY(14px);
    transition: opacity .38s ease, filter .46s ease, clip-path .58s cubic-bezier(.22, 1, .36, 1), transform .58s cubic-bezier(.22, 1, .36, 1);
  }

  .project-accordion-card.is-active .project-accordion-content {
    opacity: 1;
    filter: none;
    clip-path: inset(0);
    transform: translateY(0);
  }

  .project-accordion-type {
    margin-bottom: 9px;
    color: #a27830;
    font-size: 8px;
  }

  .project-accordion-title {
    max-width: 320px;
    color: #172130;
  }
}

@media (max-width: 620px) and (prefers-reduced-motion: reduce) {
  .project-accordion-card,
.project-accordion-card > img,
.project-accordion-content {
    transition: none !important;
  }
}

@media (max-width: 350px) {
  .project-accordion-shell {
    width: calc(100% - 18px);
  }

  .project-accordion-track {
    height: 430px;
  }

  .project-accordion-content {
    left: 17px;
    right: 17px;
  }

}

/* Mobile projects use the same one-card swipe rhythm as the news carousel. */
@media (max-width: 620px) {
  .project-accordion-shell {
    width: calc(100% - 32px);
    max-width: 358px;
    gap: 26px;
  }

  .project-accordion-track {
    height: auto;
    display: flex;
    align-items: stretch;
    gap: 12px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    scroll-behavior: auto;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
    -webkit-overflow-scrolling: auto;
    touch-action: auto;
    cursor: grab;
  }

  .project-accordion-track::-webkit-scrollbar { display: none; }

  .project-accordion-card,
  .project-accordion-card[data-coverflow-position="-1"],
  .project-accordion-card[data-coverflow-position="1"],
  .project-accordion-card[data-coverflow-position="0"],
  .project-accordion-card.is-active {
    position: relative;
    inset: auto;
    width: 100%;
    min-width: 100%;
    flex: 0 0 100%;
    height: auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    opacity: 1;
    filter: none;
    transform: none;
    border-radius: 0;
    border: 1px solid var(--line);
    background: #fff;
    box-shadow: none;
    color: #172130;
  }

  .project-accordion-card > img,
  .project-accordion-card.is-active > img,
  .project-accordion-card:is(:hover, :focus-visible) > img {
    position: relative;
    inset: auto;
    z-index: 0;
    width: 100%;
    height: 208px;
    max-height: none !important;
    flex: 0 0 208px;
    object-fit: cover;
    transform: none;
    filter: none;
  }

  .project-accordion-overlay {
    display: none;
  }

  .project-accordion-content,
  .project-accordion-card.is-active .project-accordion-content {
    position: relative;
    inset: auto;
    z-index: 1;
    min-height: 188px;
    padding: 21px 19px 23px;
    display: flex;
    flex: 1;
    opacity: 1;
    filter: none;
    clip-path: none;
    transform: none;
    background: #fff;
    text-align: left;
  }

  .project-accordion-type {
    margin-bottom: 10px;
    color: var(--gold);
    font-size: 9px;
  }

  .project-accordion-title {
    max-width: none;
    min-height: 54px;
    color: #172130;
    font-size: 22px;
    line-height: 1.3;
  }
  .project-pagination {
    min-height: 22px;
    margin-top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
  }

  .project-pagination button {
    position: relative;
    width: 7px;
    height: 7px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: rgba(183, 149, 82, .28);
    box-shadow: inset 0 0 0 1px rgba(151, 112, 39, .22);
    cursor: pointer;
    transition: background-color .35s ease, box-shadow .35s ease, transform .35s cubic-bezier(.22, 1, .36, 1);
  }

  .project-pagination button::before {
    content: "";
    position: absolute;
    inset: -7px;
    border-radius: 50%;
  }

  .project-pagination button.is-active {
    background: var(--gold);
    box-shadow: 0 0 0 4px rgba(183, 149, 82, .13), 0 2px 7px rgba(112, 77, 18, .24);
    transform: scale(1.16);
  }

  .project-pagination button[hidden] { display: none; }
}

@media (min-width: 621px) {
  .project-pagination { display: none; }
}

@media (max-width: 620px) and (prefers-reduced-motion: reduce) {
  .project-accordion-track { scroll-behavior: auto; }
}

/* Featured project covers use a consistent square frame across breakpoints. */
.project-accordion-shell { min-height: 0; }
.project-accordion-track { height: auto; max-height: none; }
.project-accordion-card { height: auto; aspect-ratio: 1 / 1; }
.project-accordion-card > img { max-height: none !important; }

@media (max-width: 620px) {
  .project-accordion-card { height: auto; aspect-ratio: auto; }
  .project-accordion-card > img,
  .project-accordion-card.is-active > img,
  .project-accordion-card:is(:hover, :focus-visible) > img {
    height: auto;
    aspect-ratio: 1 / 1;
    flex: 0 0 auto;
    object-fit: cover;
  }
}