.page_header {
  padding: 0 5rem 2.3rem;
  margin: 0 auto;
  position: relative;
  z-index: 0;
}
.page_header::before {
  content: "";
  display: block;
  width: calc(207 / 1366 * 100vw);
  aspect-ratio: 207 / 154;
  background-image: url(../../img/common/deco03.png);
  background-size: contain;
  background-repeat: no-repeat;
  position: absolute;
  top: calc(100% - 3rem);
  right: 9.7rem;
  z-index: 1;
  transform: rotate(76deg);
}
.page_header .wave_wrap {
  width: 100%;
  aspect-ratio: 1366 / 248;
  position: absolute;
  bottom: 0;
  left: 0;
  z-index: -1;
}
.page_header .page_ttl {
  color: var(--white);
  letter-spacing: .1em;
  text-shadow: 0 3px 5px rgba(52, 19, 4, 0.25);
  position: absolute;
  top: calc(50% - 2.3rem);
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  width: 100%;
}
.page_header .page_ttl::after {
  content: '';
  display: block;
  width: 7rem;
  height: 4px;
  border-radius: 6px;
  background-color: #FFF261;
  position: absolute;
  bottom: -1.4rem;
  left: 50%;
  transform: translateX(-50%);
}
.page_header .page_ttl.not_thumbnail {
  color: var(--site_letter_base);
  text-shadow: none;
}
.page_header .page_ttl.not_thumbnail::after {
  background-color: var(--site_color5);
}
.page_header .img_wrap {
  width: 100%;
  aspect-ratio: 1266 / 400;
  position: relative;
  z-index: 0;
}
.page_header .img_wrap::after {
  content: '';
  display: block;
  width: 100%;
  height: 100%;
  background-color: rgba(52, 19, 4, 0.3);
  border-radius: 40px;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
}
.page_header .page_img {
  height: 100%;
  object-fit: cover;
  border-radius: 40px;
}
.page_header:has(.not_thumbnail) {
  height: calc(160 / 1366 * 100vw);
  padding-bottom: 0;
  margin-top: 12rem;
  z-index: -1;
}
.page_header:has(.not_thumbnail)::before {
  display: none;
}
.page_header:has(.not_thumbnail) .page_ttl {
  top: 0;
  transform: translate(-50%, 0);
}
.page_header:has(.not_thumbnail) .wave_wrap {
  top: 0;
  bottom: auto;
}

// レスポンシブ
@media (min-width: 1366px) {
  .page_header:has(.not_thumbnail) {
    height: 16rem;
  }
}

@media (max-width: 1024px) {
  .page_header {
    padding: 0 2rem 2.3rem;
  }
  .page_header:has(.not_thumbnail) {
    margin-bottom: 4rem;
  }
}

@media (max-width: 480px) {
  .page_header {
    padding: 0 0 2.3rem;
  }
  .page_header::before {
    right: 1.5rem;
  }
  .page_header .img_wrap {
    aspect-ratio: 375 / 200;
  }
  .page_header .page_img {
    border-radius: 0;
  }
  .page_header .img_wrap::after {
    border-radius: 0;
  }
  .page_header:has(.not_thumbnail) {
    margin-top: 4rem;
    margin-bottom: 2rem;
    z-index: 0;
  }
}