.case-page {
  min-height: 100dvh;
  background: #000;
}

.case-page-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 120px;
  padding: 0 60px;
  background: rgb(0 0 0 / 60%);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.case-page-header img {
  width: 238px;
  height: 82px;
  object-fit: contain;
}

.case-page-header nav {
  display: flex;
  gap: 46px;
  color: rgb(255 255 255 / 58%);
  font-size: 20px;
}

.case-placeholder {
  display: grid;
  align-content: center;
  min-height: 100dvh;
  padding: 170px 8vw 80px;
  text-align: center;
}

.case-placeholder .case-number {
  margin: 0 0 24px;
  color: rgb(255 255 255 / 42%);
  font-size: 24px;
  letter-spacing: .18em;
}

.case-placeholder h1 {
  margin: 0;
  font-size: clamp(44px, 6vw, 90px);
  font-weight: 300;
  letter-spacing: .08em;
}

.case-placeholder .case-en {
  margin: 28px 0 72px;
  color: rgb(255 255 255 / 58%);
  font-size: clamp(20px, 2vw, 32px);
  letter-spacing: .08em;
}

.case-placeholder .back-link {
  justify-self: center;
  padding: 15px 34px;
  border: 1px solid rgb(255 255 255 / 28%);
  border-radius: 999px;
  background: rgb(255 255 255 / 5%);
  font-size: 20px;
  letter-spacing: .08em;
}

@media (max-width: 767px) {
  .case-page-header {
    height: 86px;
    padding: 0 20px;
  }

  .case-page-header img {
    width: 150px;
    height: 52px;
  }

  .case-page-header nav {
    gap: 16px;
    font-size: 14px;
  }
}