.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.case-hero {
  height: 680px;
}

.case-hero__backdrop {
  background: #071021 url("assets/cases-hero.png") center 47.8% / cover no-repeat;
}

.cases-list-page .case-hero__backdrop {
  background: #071021;
}

.case-hero__backdrop::after {
  background: linear-gradient(90deg, rgba(1, 6, 18, .34), rgba(4, 17, 43, .06) 60%, rgba(1, 6, 18, .12));
}

.case-hero__copy {
  top: 206px;
  height: 309px;
}

@media (min-width: 901px) {
  .case-hero__copy .hero-brand__cn {
    font-size: 64px;
  }

  .case-hero__copy .hero-brand__en {
    width: 204.34px;
    margin-left: 16.05px;
    font-size: 40px;
    translate: -16px 0;
  }

  .case-hero__copy h1 {
    font-size: 48px;
  }
}

.case-work {
  z-index: 2;
  height: auto;
  padding-top: 184px;
  padding-bottom: 120px;
  border-radius: 0 0 80px 80px;
  background: #fbfcff url("assets/cases-surface.png?v=20260907-case-back-1") center top / 100% 100% no-repeat;
}

.case-filters {
  position: absolute;
  z-index: 2;
  left: var(--side);
  top: 60px;
  width: 1344px;
  height: 64px;
  display: flex;
  align-items: flex-start;
  gap: 56px;
}

.case-filters a {
  position: relative;
  flex: 0 0 auto;
  height: 64px;
  color: #777;
  font-size: 40px;
  line-height: 64px;
  font-weight: 400;
  white-space: nowrap;
  transition: color .28s ease, translate .28s cubic-bezier(.22, 1, .36, 1);
}

.case-filters a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -9px;
  height: 3px;
  border-radius: 3px;
  background: var(--blue);
  opacity: 0;
  transform: scaleX(.35);
  transition: opacity .28s ease, transform .35s cubic-bezier(.22, 1, .36, 1);
}

.case-filters a:hover,
.case-filters a:focus-visible {
  color: var(--blue);
  outline: none;
}

.case-filters a:hover::after,
.case-filters a:focus-visible::after {
  opacity: 1;
  transform: scaleX(1);
}

.case-filters a.is-active {
  color: var(--blue);
  font-weight: 700;
}

.case-projects {
  position: relative;
  left: auto;
  top: auto;
  width: auto;
  height: auto;
  margin: 0;
  padding: 0 var(--side);
  display: flex;
  flex-direction: column;
  gap: 60px;
}

.case-project {
  position: relative;
  flex: 0 0 461px;
  width: 1520px;
  height: 461px;
  padding-top: 61px;
  display: grid;
  grid-template-columns: 680px 780px;
  column-gap: 60px;
  border-top: 1px solid rgba(0, 11, 44, .13);
}

.case-project > img {
  width: 680px;
  height: 400px;
  display: block;
  object-fit: cover;
  transition: transform .7s cubic-bezier(.22, 1, .36, 1), filter .4s ease;
}

.case-project:hover > img {
  transform: scale(1.018);
  filter: saturate(1.05) contrast(1.015);
}

.case-project__detail {
  position: relative;
  height: 400px;
}

.case-project__detail h3 {
  margin: 0;
  display: flex;
  flex-direction: column;
}

/* 与首页案例卡片的英文、中文标题完全共用同一组排版数值。 */
.case-project__detail h3 strong {
  font-family: Arial, sans-serif;
  font-size: 26px;
  line-height: 36px;
  font-weight: 400;
  letter-spacing: -.03em;
}

.case-project__detail h3 small {
  margin-top: 12px;
  color: rgba(0, 11, 44, .6);
  font-size: 30px;
  line-height: 29px;
  font-weight: 400;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.case-project__detail p {
  width: 780px;
  margin: 55px 0 0;
  color: #777;
  font-size: 18px;
  line-height: 32px;
  text-align: justify;
}

.case-project__detail geek-button {
  position: absolute;
  left: 0;
  bottom: 0;
}

.case-pagination {
  position: relative;
  left: auto;
  top: auto;
  width: auto;
  height: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transform: none;
  margin: 60px 0 0;
}

.case-pagination a {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  color: #777;
  font-size: 18px;
  line-height: 32px;
  font-weight: 500;
  transition: color .25s ease, background .25s ease, translate .25s ease;
}

.case-pagination a:hover,
.case-pagination a:focus-visible,
.case-pagination a.is-active {
  background: var(--blue);
  color: #fff;
  outline: none;
}

.case-pagination a:hover {
  translate: 0 -2px;
}

.case-banner {
  z-index: 1;
  height: 640px;
  margin-top: -80px;
  color: #fff;
  background: #030916;
}

.case-banner__video {
  position: absolute;
  z-index: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
}

.case-banner::after {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 0;
  pointer-events: none;
  background: rgba(1, 8, 25, .16);
}

.case-banner__copy {
  position: absolute;
  z-index: 2;
  left: 50%;
  top: 230px;
  width: 600px;
  height: 180px;
  text-align: center;
  transform: translateX(-50%);
}

.case-banner__copy strong {
  display: block;
  font-size: 56px;
  line-height: 96px;
  font-weight: 400;
  letter-spacing: -.04em;
}

.case-banner__copy strong span {
  font-weight: 700;
}

.case-banner__copy p {
  margin: 20px 0 0;
  font-size: 40px;
  line-height: 64px;
  font-weight: 700;
}

.case-banner__line {
  display: inline;
}

.case-banner__light-word {
  font-weight: 400;
}

.case-contact {
  margin-top: -82px;
}

@media (max-width: 1500px) and (min-width: 901px) {
  .case-filters {
    transform: scale(.82);
    transform-origin: top left;
  }

  .case-project {
    flex: 0 0 auto;
    width: 100%;
    height: auto;
    grid-template-columns: 1fr 1.15fr;
    column-gap: 40px;
  }

  .case-project > img {
    width: 100%;
    height: auto;
    aspect-ratio: 680 / 400;
  }

  .case-banner__copy {
    transform: translateX(-50%) scale(.82);
  }

}

@media (max-width: 900px) {
  .case-page section.case-hero {
    height: 780px !important;
  }

  .case-hero__backdrop {
    background-position: 50% 48%;
  }

  .cases-list-page .case-hero__backdrop {
    background: #071021 url("assets/cases-mobile-bg.png") center / cover no-repeat;
  }

  .cases-list-page .case-hero__video {
    display: none;
  }

  .case-hero__copy {
    top: 230px;
    height: auto;
  }

  .case-hero__copy h1 span {
    white-space: normal;
  }

  .case-hero__copy h1 .hero-line--strong {
    font-size: min(36px, calc((100vw - 48px) / 10.6));
    white-space: nowrap;
  }

  .case-work {
    padding: 72px 24px 100px;
    background-size: cover;
  }

  .case-filters {
    position: relative;
    left: auto;
    top: auto;
    width: calc(100vw - 48px);
    height: auto;
    padding-bottom: 14px;
    gap: 30px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .case-filters::-webkit-scrollbar {
    display: none;
  }

  .case-filters a {
    height: 46px;
    font-size: 24px;
    line-height: 46px;
  }

  .case-filters a::after {
    bottom: -2px;
  }

  .case-projects {
    position: relative;
    left: auto;
    top: auto;
    width: auto;
    height: auto;
    margin-top: 46px;
    gap: 72px;
  }

  .case-project {
    flex-basis: auto;
    width: auto;
    height: auto;
    min-height: 0;
    padding-top: 28px;
    display: block;
  }

  .case-project > img {
    width: 100%;
    height: auto;
    aspect-ratio: 1.7;
  }

  .case-project__detail {
    height: auto;
    padding-top: 28px;
  }

  .case-project__detail h3 strong {
    font-size: 20px;
    line-height: 30px;
  }

  .case-project__detail h3 small {
    margin-top: 8px;
    font-size: 24px;
    line-height: 32px;
  }

  .case-project__detail p {
    width: auto;
    margin-top: 28px;
    font-size: 16px;
    line-height: 30px;
    text-align: left;
  }

  .case-project__detail geek-button {
    position: relative;
    left: auto;
    bottom: auto;
    margin-top: 32px;
  }

  .case-pagination {
    position: relative;
    left: auto;
    top: auto;
    height: auto;
    margin-top: 72px;
    justify-content: center;
    gap: 2px;
    transform: none;
  }

  .case-pagination a {
    width: 38px;
    height: 38px;
  }

  .case-banner {
    height: 420px !important;
    margin-top: 0 !important;
  }

  .cases-list-page .case-banner {
    background: #030916 url("assets/cases-banner-mobile-bg.png") center / cover no-repeat;
  }

  .cases-list-page .case-banner__video {
    display: none;
  }

  .case-banner__copy {
    top: 112px;
    width: calc(100% - 48px);
    height: auto;
  }

  .case-banner__copy strong {
    font-size: 42px;
    line-height: 72px;
  }

  .case-banner__copy p {
    width: fit-content;
    margin: 16px auto 0;
    font-size: clamp(24px, 7vw, 32px);
    line-height: 48px;
    text-align: center;
  }

  .case-banner__line {
    display: block;
    white-space: nowrap;
  }

  .case-contact {
    margin-top: 0 !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .case-project > img,
  .case-filters a,
  .case-filters a::after,
  .case-pagination a {
    transition-duration: .01ms;
  }
}