/* ==========================================================================
   WORKS ページ
   ========================================================================== */
.hd-works-page {
  background: var(--hd-bg);
}

.hd-works-page .hd-page-hero {
  min-height: clamp(22rem, 46vw, 34rem);
  display: flex;
  align-items: center;
}

.hd-works-page .hd-page-hero__overlay {
  background: linear-gradient(90deg, rgba(20, 50, 70, 0.92) 0%, rgba(20, 50, 70, 0.68) 42%, rgba(20, 50, 70, 0.24) 100%);
}

.hd-works-page .hd-page-hero__en {
  margin-bottom: 0.25rem;
  color: var(--hd-white);
  font-family: var(--hd-font-serif);
  font-size: clamp(3rem, 9vw, 5rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: 0.02em;
  text-transform: none;
}

.hd-works-page .hd-page-hero__title {
  font-size: clamp(1.4rem, 4vw, 2rem);
  letter-spacing: 0.02em;
}

.hd-works-grid-section {
  position: relative;
  padding-block: clamp(4.5rem, 9vw, 8rem);
  background:
    radial-gradient(circle at 78% 24%, rgba(255, 255, 255, 0.86), rgba(255, 255, 255, 0) 30rem),
    var(--hd-bg);
  overflow: hidden;
}

.hd-works-grid-section::before {
  content: "WORKS";
  position: absolute;
  top: clamp(18rem, 38vw, 30rem);
  right: max(1rem, calc((100vw - var(--hd-container-max)) / 2 - 3rem));
  color: rgba(27, 67, 93, 0.06);
  font-family: var(--hd-font-serif);
  font-size: clamp(5rem, 14vw, 10rem);
  line-height: 1;
  letter-spacing: 0.04em;
  pointer-events: none;
}

.hd-works-intro {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(2rem, 5vw, 4.5rem);
  margin-bottom: clamp(3rem, 7vw, 5.5rem);
}

.hd-works-intro__heading {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2rem);
  min-width: 0;
}

.hd-works-intro__heading::after {
  content: "";
  flex: 1;
  height: 1px;
  background: rgba(27, 67, 93, 0.18);
}

.hd-works-intro__en {
  margin: 0;
  color: var(--hd-main);
  font-family: var(--hd-font-serif);
  font-size: clamp(2.3rem, 7vw, 4rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.hd-works-intro__label {
  flex: 0 0 auto;
  color: rgba(27, 67, 93, 0.72);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.hd-works-intro__body {
  max-width: 34rem;
  margin-left: auto;
}

.hd-works-intro__title {
  margin: 0 0 1.25rem;
  color: var(--hd-main);
  font-family: var(--hd-font-serif);
  font-size: clamp(1.25rem, 3vw, 1.8rem);
  font-weight: 500;
  line-height: 1.9;
  letter-spacing: 0.06em;
}

.hd-works-intro__text {
  margin: 0;
  color: rgba(46, 56, 66, 0.76);
  font-size: 0.9rem;
  line-height: 2;
}

.hd-works-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(2.5rem, 6vw, 4.5rem) clamp(2rem, 5vw, 4rem);
}

.hd-works-card {
  min-width: 0;
}

.hd-works-card[hidden] {
  display: none;
}

.hd-works-card__link {
  display: grid;
  gap: 1.5rem;
  height: 100%;
  color: inherit;
  text-decoration: none;
}

.hd-works-card__thumb {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(27, 67, 93, 0.1), rgba(249, 159, 72, 0.16));
}

.hd-works-card__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--hd-transition), filter var(--hd-transition);
}

.hd-works-card__placeholder {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  color: rgba(27, 67, 93, 0.45);
  font-family: var(--hd-font-en);
  letter-spacing: 0.12em;
}

.hd-works-card__body {
  position: relative;
  display: grid;
  align-content: start;
  gap: 0.8rem;
}

.hd-works-card__body::before {
  content: "";
  width: 4.5rem;
  height: 1px;
  margin-bottom: 0.2rem;
  background: rgba(27, 67, 93, 0.36);
}

.hd-works-card__num {
  margin: 0;
  color: var(--hd-warm);
  font-family: var(--hd-font-serif);
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  line-height: 1;
}

.hd-works-card__title {
  margin: 0;
  color: var(--hd-main);
  font-family: var(--hd-font-serif);
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: 0.03em;
}

.hd-works-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  color: rgba(27, 67, 93, 0.82);
  font-family: var(--hd-font-serif);
  font-size: 0.82rem;
  line-height: 1.7;
}

.hd-works-card__tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.85rem;
  padding: 0.3rem 0.65rem;
  background: rgba(46, 109, 164, 0.08);
  color: var(--hd-accent);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.hd-works-card__excerpt {
  margin: 0;
  color: rgba(46, 56, 66, 0.78);
  font-size: 0.9rem;
  line-height: 2;
}

.hd-works-card__more {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: min(100%, 12rem);
  min-height: 3rem;
  margin-top: 0.55rem;
  padding: 0 1.2rem;
  border: 1px solid rgba(27, 67, 93, 0.48);
  color: var(--hd-main);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  transition: background var(--hd-transition), color var(--hd-transition), border-color var(--hd-transition);
}

.hd-works-card:hover .hd-works-card__img,
.hd-works-card:focus-within .hd-works-card__img {
  filter: brightness(1.04);
  transform: scale(1.04);
}

.hd-works-card:hover .hd-works-card__more,
.hd-works-card:focus-within .hd-works-card__more {
  background: var(--hd-main);
  border-color: var(--hd-main);
  color: var(--hd-white);
}

.hd-works-filter-section {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1rem;
  margin-top: clamp(3rem, 7vw, 5.5rem);
  padding-top: clamp(1.5rem, 4vw, 2.5rem);
  border-top: 1px solid rgba(27, 67, 93, 0.14);
}

.hd-works-filter-section__label {
  margin: 0;
  color: rgba(27, 67, 93, 0.7);
  font-family: var(--hd-font-serif);
  font-size: 0.88rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hd-works-filter__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.hd-works-filter__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.35rem;
  padding: 0.55rem 0.9rem;
  border: 1px solid rgba(27, 67, 93, 0.22);
  background: rgba(255, 255, 255, 0.46);
  color: var(--hd-main);
  font-family: var(--hd-font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background var(--hd-transition), color var(--hd-transition), border-color var(--hd-transition);
}

.hd-works-filter__btn.is-active,
.hd-works-filter__btn:hover {
  background: var(--hd-main);
  border-color: var(--hd-main);
  color: var(--hd-white);
}

.hd-works-filter__count {
  color: var(--hd-warm);
  font-family: var(--hd-font-serif);
  font-size: 0.86rem;
  line-height: 1;
}

.hd-works-filter__btn.is-active .hd-works-filter__count,
.hd-works-filter__btn:hover .hd-works-filter__count {
  color: var(--hd-white);
}

.hd-works-grid__empty,
.hd-works-empty {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hd-works-grid__empty {
  margin: 2rem 0 0;
  color: rgba(46, 56, 66, 0.7);
}

.hd-works-empty {
  padding: clamp(2.5rem, 6vw, 4rem);
  border: 1px solid rgba(27, 67, 93, 0.18);
  background: rgba(255, 255, 255, 0.5);
}

.hd-works-empty__title {
  margin: 0 0 0.75rem;
  color: var(--hd-main);
  font-family: var(--hd-font-serif);
  font-size: 1.3rem;
}

.hd-works-empty__text {
  margin: 0;
  color: rgba(46, 56, 66, 0.76);
  font-size: 0.92rem;
  line-height: 1.9;
}

.hd-works-design-flow {
  width: 100vw;
  margin-right: calc(50% - 50vw);
  margin-left: calc(50% - 50vw);
  padding-block: clamp(4rem, 8vw, 6.25rem);
  background: radial-gradient(circle at 50% 0%, rgba(120, 187, 230, 0.16), rgba(120, 187, 230, 0) 36rem), var(--hd-main);
  color: var(--hd-white);
}

.hd-works-design-flow__head {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2rem);
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.hd-works-design-flow__head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: rgba(255, 255, 255, 0.24);
}

.hd-works-design-flow__en {
  margin: 0;
  color: var(--hd-white);
  font-family: var(--hd-font-serif);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
  letter-spacing: 0.04em;
}

.hd-works-design-flow__label {
  flex: 0 0 auto;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
}

.hd-works-design-flow__steps {
  display: grid;
  gap: 2rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hd-works-design-flow__step {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 1rem;
  text-align: center;
}

.hd-works-design-flow__num {
  display: grid;
  place-items: center;
  width: 3.25rem;
  aspect-ratio: 1;
  border: 1px solid rgba(249, 159, 72, 0.72);
  border-radius: 50%;
  color: var(--hd-white);
  font-family: var(--hd-font-serif);
  font-size: 0.9rem;
}

.hd-works-design-flow__title {
  margin: 0;
  color: var(--hd-white);
  font-family: var(--hd-font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.4;
}

.hd-works-design-flow__text {
  max-width: 13rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.88rem;
  line-height: 2;
}

.hd-works-design-flow__action {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  text-align: center;
}

.hd-works-design-flow__btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-width: 13rem;
  min-height: 3.25rem;
  padding: 0 1.4rem;
  border: 1px solid rgba(255, 255, 255, 0.52);
  color: var(--hd-white);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  transition: background var(--hd-transition), color var(--hd-transition), border-color var(--hd-transition);
}

.hd-works-design-flow__btn:hover {
  background: var(--hd-white);
  border-color: var(--hd-white);
  color: var(--hd-main);
}

.hd-works-page .hd-cta-banner {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

@media (min-width: 768px) {
  .hd-works-intro {
    grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.82fr);
    align-items: start;
  }

  .hd-works-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hd-works-card--featured {
    grid-column: 1 / -1;
  }

  .hd-works-card--featured .hd-works-card__link {
    grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.8fr);
    align-items: center;
    gap: clamp(2.5rem, 6vw, 5rem);
  }

  .hd-works-card--featured .hd-works-card__thumb {
    aspect-ratio: 1.48 / 1;
  }

  .hd-works-card--featured .hd-works-card__body {
    padding-left: clamp(1rem, 3vw, 2rem);
    border-left: 2px solid var(--hd-warm);
  }

  .hd-works-card--featured .hd-works-card__body::before {
    display: none;
  }

  .hd-works-design-flow__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .hd-works-design-flow__step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 1.625rem;
    left: calc(50% + 1.625rem);
    width: calc(100% - 3.25rem);
    height: 1px;
    background: rgba(249, 159, 72, 0.42);
  }
}

/* WORKS archive: reference-layout fidelity overrides */
.hd-works-page .hd-container {
  max-width: min(100%, 1450px);
}

.hd-works-page .hd-page-hero {
  min-height: auto;
  height: clamp(18.75rem, 39vw, 23.5rem);
  padding-block: 0;
}

.hd-works-page .hd-page-hero__bg img {
  object-position: center 48%;
}

.hd-works-page .hd-page-hero__overlay {
  background:
    linear-gradient(90deg, rgba(4, 45, 68, 0.94) 0%, rgba(4, 45, 68, 0.72) 36%, rgba(4, 45, 68, 0.2) 72%, rgba(4, 45, 68, 0.06) 100%);
}

.hd-works-page .hd-page-hero .hd-container {
  display: flex;
  align-items: center;
  height: 100%;
}

.hd-works-page .hd-page-hero__inner {
  align-items: center;
  gap: clamp(1.4rem, 3.2vw, 2.6rem);
  margin-left: clamp(1rem, 6vw, 4.5rem);
}

.hd-works-page .hd-page-hero__line-motif {
  width: 2px;
  height: clamp(5.25rem, 13vw, 6.8rem);
}

.hd-works-page .hd-page-hero__text {
  padding-top: 0;
}

.hd-works-page .hd-page-hero__en {
  margin: 0 0 0.35rem;
  font-size: clamp(2.65rem, 8vw, 4.25rem);
  line-height: 0.98;
}

.hd-works-page .hd-page-hero__title {
  margin: 0 0 1.45rem;
  font-size: clamp(1.15rem, 3vw, 1.7rem);
  line-height: 1.35;
}

.hd-works-page .hd-page-hero__desc {
  font-size: clamp(0.75rem, 1.4vw, 0.9rem);
  line-height: 1.8;
}

.hd-works-grid-section {
  padding-top: clamp(2.8rem, 7vw, 4.6rem);
  padding-bottom: clamp(4rem, 8vw, 6rem);
}

.hd-works-intro {
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: clamp(3rem, 6.5vw, 4.5rem);
  padding-inline: clamp(0rem, 5vw, 4.25rem);
}

.hd-works-intro__heading {
  gap: clamp(0.9rem, 2vw, 1.5rem);
}

.hd-works-intro__heading::after {
  max-width: 14.5rem;
}

.hd-works-intro__en {
  font-size: clamp(2.35rem, 5.3vw, 3.1rem);
  white-space: nowrap;
}

.hd-works-intro__label {
  font-size: 0.72rem;
}

.hd-works-intro__body {
  max-width: 25rem;
}

.hd-works-intro__title {
  margin-bottom: 1.25rem;
  font-size: clamp(1.28rem, 3.1vw, 1.78rem);
  line-height: 1.9;
}

.hd-works-intro__text {
  font-size: 0.78rem;
  line-height: 2.05;
}

.hd-works-card--featured .hd-works-card__link {
  position: relative;
}

.hd-works-card--featured .hd-works-card__body {
  z-index: 1;
}

.hd-works-card--featured .hd-works-card__num {
  font-size: clamp(1.35rem, 3vw, 1.7rem);
}

.hd-works-card--featured .hd-works-card__title {
  font-size: clamp(1.55rem, 3.2vw, 2.1rem);
  line-height: 1.55;
}

.hd-works-card--featured .hd-works-card__more {
  width: min(100%, 11rem);
}

@media (min-width: 768px) {
  .hd-works-intro {
    grid-template-columns: minmax(22rem, 0.95fr) minmax(20rem, 0.78fr);
    align-items: start;
  }

  .hd-works-card--featured .hd-works-card__link {
    grid-template-columns: minmax(0, 57vw) minmax(16rem, 23rem);
    gap: clamp(2rem, 5.2vw, 4rem);
    align-items: center;
    width: calc(100% + (50vw - 50%));
    margin-left: calc(50% - 50vw);
  }

  .hd-works-card--featured .hd-works-card__thumb {
    aspect-ratio: 1.48 / 1;
  }

  .hd-works-card--featured .hd-works-card__body {
    min-height: min(28vw, 17rem);
    padding-left: clamp(1.25rem, 2.7vw, 2rem);
  }

  .hd-works-grid-section::before {
    top: clamp(20rem, 39vw, 27rem);
    right: max(2rem, calc((100vw - 1450px) / 2 + 8rem));
    font-size: clamp(6rem, 14vw, 9rem);
  }
}

/* ============================================================
   WORKS SINGLE — 新デザイン（Hero / Overview / Concept / Gallery / Points）
   ============================================================ */

/* 全体共通 */
.hd-works-single {
  background-color: var(--hd-bg);
}

.hd-works-single__section {
  padding: clamp(4rem, 9vw, 8rem) 0;
  position: relative;
}

.hd-works-single__section:not(:last-child)::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent 0%,
    rgba(27, 67, 93, 0.08) 20%,
    rgba(27, 67, 93, 0.08) 80%,
    transparent 100%
  );
}

.hd-works-single__section--overview {
  background-color: var(--hd-bg);
  background-image:
    radial-gradient(
      circle at 85% -10%,
      rgba(120, 187, 230, 0.08) 0%,
      rgba(120, 187, 230, 0) 40%
    ),
    linear-gradient(
      135deg,
      rgba(249, 159, 72, 0.04) 0%,
      transparent 60%
    );
  border-top: 1px solid rgba(27, 67, 93, 0.08);
  box-shadow: inset 0 20px 40px rgba(27, 67, 93, 0.02);
}

.hd-works-single__overview-grid {
  position: relative;
}

.hd-works-single__overview-row {
  transition: background-color var(--hd-transition);
  padding: 1.5rem 0 !important;
  border-bottom: 1px solid rgba(27, 67, 93, 0.08) !important;
}

.hd-works-single__overview-row:nth-child(even) {
  background-color: rgba(255, 255, 255, 0.3);
  padding: 1.5rem 1rem !important;
  margin: 0 -1rem;
  border-radius: 4px;
}

.hd-works-single__overview-row:hover {
  background-color: rgba(120, 187, 230, 0.06);
}

.hd-works-single__section--concept {
  background-image:
    radial-gradient(
      ellipse 800px 600px at 50% 120%,
      rgba(249, 159, 72, 0.06) 0%,
      transparent 70%
    ),
    radial-gradient(
      circle at 5% 20%,
      rgba(27, 67, 93, 0.04) 0%,
      transparent 30%
    );
  border-left: 4px solid var(--hd-warm);
}

.hd-works-single__concept-grid::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 2rem;
  background: var(--hd-warm);
  border-radius: 2px;
}

.hd-works-single__concept-image {
  box-shadow:
    0 20px 50px rgba(27, 67, 93, 0.12),
    0 0 0 1px rgba(27, 67, 93, 0.05) !important;
  border-radius: 2px;
  transition:
    box-shadow var(--hd-transition),
    transform var(--hd-transition);
}

.hd-works-single__concept-grid:hover .hd-works-single__concept-image {
  box-shadow:
    0 30px 70px rgba(27, 67, 93, 0.16),
    0 0 0 1px rgba(27, 67, 93, 0.08) !important;
  transform: translateY(-4px);
}

.hd-works-single__concept-watermark {
  bottom: 5% !important;
  right: -5% !important;
  left: auto !important;
  font-size: clamp(8rem, 18vw, 14rem) !important;
  opacity: 0.03 !important;
}

.hd-works-single__section--gallery {
  background-image:
    radial-gradient(
      circle at 100% 0%,
      rgba(27, 67, 93, 0.04) 0%,
      transparent 40%
    ),
    linear-gradient(
      180deg,
      rgba(249, 159, 72, 0.02) 0%,
      transparent 50%,
      rgba(120, 187, 230, 0.04) 100%
    );
}

.hd-works-single__section--gallery .hd-works-single__sec-header {
  border-bottom: 1px solid rgba(27, 67, 93, 0.12);
}

.hd-works-single__gallery-grid {
  gap: 2rem !important;
}

.hd-works-single__gallery-main,
.hd-works-single__gallery-sub-item,
.hd-works-single__gallery-extra-item {
  box-shadow: 0 10px 30px rgba(27, 67, 93, 0.08) !important;
  border-radius: 4px;
  overflow: hidden;
  transition:
    box-shadow var(--hd-transition),
    transform var(--hd-transition);
}

.hd-works-single__gallery-grid:hover .hd-works-single__gallery-main,
.hd-works-single__gallery-grid:hover .hd-works-single__gallery-sub-item,
.hd-works-single__gallery-extra:hover .hd-works-single__gallery-extra-item {
  box-shadow: 0 15px 45px rgba(27, 67, 93, 0.12) !important;
  transform: translateY(-2px);
}

.hd-works-single__gallery-sub {
  gap: 2rem !important;
}

.hd-works-single__gallery-extra {
  gap: 2rem !important;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(27, 67, 93, 0.08);
}

.hd-works-single__section--ba {
  background-image:
    radial-gradient(
      circle at 20% 50%,
      rgba(120, 187, 230, 0.08) 0%,
      transparent 40%
    ),
    radial-gradient(
      ellipse 1000px 800px at 80% 100%,
      rgba(249, 159, 72, 0.04) 0%,
      transparent 60%
    ),
    linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.02) 0%,
      transparent 100%
    );
}

.hd-works-single__section--ba .hd-works-single__sec-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.hd-works-single__section--ba .hd-works-single__sec-line {
  background-color: var(--hd-warm) !important;
  opacity: 0.6 !important;
}

.hd-ba-slider-item {
  background: rgba(255, 255, 255, 0.03);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition:
    background var(--hd-transition),
    border-color var(--hd-transition);
}

.hd-ba-slider-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.15);
}

.hd-ba-slider {
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25) !important;
  border-radius: 8px;
}

.hd-works-single__section--points {
  background-image:
    radial-gradient(
      circle at 50% -20%,
      rgba(249, 159, 72, 0.06) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 100% 100%,
      rgba(27, 67, 93, 0.04) 0%,
      transparent 50%
    );
}

.hd-works-single__points-grid {
  gap: 2.5rem !important;
}

.hd-works-single__point-card {
  padding: 2rem;
  background: var(--hd-white);
  border: 1px solid rgba(27, 67, 93, 0.08);
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(27, 67, 93, 0.05);
  transition:
    box-shadow var(--hd-transition),
    transform var(--hd-transition),
    border-color var(--hd-transition);
}

.hd-works-single__point-card:hover {
  box-shadow: 0 12px 32px rgba(27, 67, 93, 0.12);
  transform: translateY(-4px);
  border-color: var(--hd-warm);
}

.hd-works-single__point-num {
  box-shadow: 0 4px 12px rgba(249, 159, 72, 0.25) !important;
  transition:
    box-shadow var(--hd-transition),
    transform var(--hd-transition);
}

.hd-works-single__point-card:hover .hd-works-single__point-num {
  box-shadow: 0 8px 24px rgba(249, 159, 72, 0.35) !important;
  transform: scale(1.05);
}

.hd-works-single__point-num-line {
  background: linear-gradient(
    to right,
    var(--hd-warm),
    var(--hd-warm) 50%,
    transparent 100%
  ) !important;
  height: 2px !important;
  opacity: 0.5;
  transition: opacity var(--hd-transition);
}

.hd-works-single__point-card:hover .hd-works-single__point-num-line {
  opacity: 1;
}

.hd-works-single__point-title {
  font-weight: 600 !important;
  transition: color var(--hd-transition);
}

.hd-works-single__point-card:hover .hd-works-single__point-title {
  color: var(--hd-warm);
}

.hd-works-single__sec-header {
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(27, 67, 93, 0.08);
  position: relative;
}

.hd-works-single__sec-header::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 3rem;
  height: 2px;
  background: linear-gradient(
    to right,
    var(--hd-warm),
    var(--hd-warm) 50%,
    transparent 100%
  );
  opacity: 0.6;
}

/* ==============================
   ① Hero Section
   ============================== */
.hd-works-single__hero {
  position: relative;
  min-height: clamp(32rem, 55vw, 42rem);
  display: flex;
  align-items: center;
  padding-top: clamp(4rem, 8vw, 6rem);
  padding-bottom: clamp(4rem, 8vw, 6rem);
  color: var(--hd-white);
  overflow: hidden;
}

.hd-works-single__hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hd-works-single__hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hd-works-single__hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(15, 35, 50, 0.96) 0%,
    rgba(15, 35, 50, 0.88) 35%,
    rgba(15, 35, 50, 0.45) 65%,
    transparent 100%
  );
}

.hd-works-single__hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
}

/* ブレッドクラム */
.hd-works-single__breadcrumb {
  margin-bottom: clamp(4rem, 10vw, 8rem);
}

.hd-works-single__breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.95);
  letter-spacing: 0.04em;
  font-weight: 500;
}

.hd-works-single__breadcrumb-list li + li::before {
  content: "/";
  margin-right: 0.5rem;
  opacity: 0.5;
}

.hd-works-single__breadcrumb-list a {
  color: inherit;
  text-decoration: none;
  transition: color var(--hd-transition);
}

.hd-works-single__breadcrumb-list a:hover {
  color: var(--hd-warm);
}

/* ヒーローコンテンツエリア */
.hd-works-single__hero-content {
  display: flex;
  align-items: flex-start;
  gap: clamp(1.5rem, 4vw, 3rem);
}

/* オレンジの垂直線 */
.hd-works-single__hero-line {
  flex-shrink: 0;
  width: 2px;
  height: clamp(6.5rem, 14vw, 9.5rem);
  background-color: var(--hd-warm);
  margin-top: 0.5rem;
}

.hd-works-single__hero-text {
  flex: 1;
}

/* プロジェクトラベル（橙色） */
.hd-works-single__hero-label {
  display: block;
  margin: 0 0 1rem;
  font-family: var(--hd-font-serif);
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--hd-warm);
}

/* プロジェクト名（h1） */
.hd-works-single__hero-title {
  margin: 0 0 1.5rem;
  font-family: var(--hd-font-serif);
  font-size: clamp(2.2rem, 6.5vw, 4.25rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0.02em;
  color: var(--hd-white);
}

/* 場所/家種/年 */
.hd-works-single__hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 1rem;
  font-size: clamp(0.9rem, 2vw, 1.15rem);
  font-weight: 500;
  color: var(--hd-white);
  letter-spacing: 0.04em;
}

.hd-works-single__hero-meta-sep {
  opacity: 0.8;
  font-weight: 400;
}

/* ==============================
   ② Project Overview（2カラム）
   ============================== */
.hd-works-single__section--overview {
  background-color: var(--hd-bg);
  background-image:
    radial-gradient(
      circle at 85% -10%,
      rgba(120, 187, 230, 0.08) 0%,
      rgba(120, 187, 230, 0) 40%
    ),
    linear-gradient(
      135deg,
      rgba(249, 159, 72, 0.04) 0%,
      transparent 60%
    );
  border-top: 1px solid rgba(27, 67, 93, 0.08);
  box-shadow: inset 0 20px 40px rgba(27, 67, 93, 0.02);
}

.hd-works-single__overview-grid {
  display: grid;
  gap: clamp(3rem, 7vw, 6rem);
  position: relative;
}

@media (min-width: 768px) {
  .hd-works-single__overview-grid {
    grid-template-columns: minmax(0, 1fr) minmax(22rem, 0.65fr);
    align-items: start;
  }
}

.hd-works-single__sec-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
  position: relative;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(27, 67, 93, 0.08);
}

.hd-works-single__sec-header::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 3rem;
  height: 2px;
  background: linear-gradient(
    to right,
    var(--hd-warm),
    var(--hd-warm) 50%,
    transparent 100%
  );
  opacity: 0.6;
}

.hd-works-single__sec-en {
  font-family: var(--hd-font-serif);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  color: var(--hd-main);
  line-height: 1.1;
}

.hd-works-single__sec-line {
  width: 2px;
  height: 1.25rem;
  background-color: var(--hd-warm);
  opacity: 0.5;
  border-radius: 1px;
  margin: 0 0.5rem;
}

.hd-works-single__sec-ja {
  margin: 0;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--hd-main);
  letter-spacing: 0.1em;
}

.hd-works-single__sec-body {
  font-size: 0.95rem;
  line-height: 2.1;
  color: rgba(46, 56, 66, 0.85);
}

/* テーブル（dl） */
.hd-works-single__overview-table {
  margin: 0;
  border-top: 1px solid rgba(27, 67, 93, 0.12);
}

.hd-works-single__overview-row {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 0 1rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(27, 67, 93, 0.08);
  transition: background-color var(--hd-transition);
}

.hd-works-single__overview-row:nth-child(even) {
  background-color: rgba(255, 255, 255, 0.3);
  padding: 1.5rem 1rem;
  margin: 0 -1rem;
  border-radius: 4px;
}

.hd-works-single__overview-row:hover {
  background-color: rgba(120, 187, 230, 0.06);
}

.hd-works-single__overview-row dt {
  font-size: 0.85rem;
  font-weight: 700;
  color: rgba(27, 67, 93, 0.75);
  letter-spacing: 0.06em;
}

.hd-works-single__overview-row dd {
  margin: 0;
  font-size: 0.9rem;
  color: var(--hd-text);
  line-height: 1.6;
}

/* ==============================
   ③ Design Concept
   ============================== */
.hd-works-single__section--concept {
  position: relative;
  background-color: var(--hd-bg);
  background-image:
    radial-gradient(
      ellipse 800px 600px at 50% 120%,
      rgba(249, 159, 72, 0.06) 0%,
      transparent 70%
    ),
    radial-gradient(
      circle at 5% 20%,
      rgba(27, 67, 93, 0.04) 0%,
      transparent 30%
    );
  border-left: 4px solid var(--hd-warm);
  overflow: hidden;
}

.hd-works-single__concept-watermark {
  position: absolute;
  bottom: 5%;
  right: -5%;
  left: auto;
  font-family: var(--hd-font-serif);
  font-size: clamp(8rem, 18vw, 14rem);
  font-weight: 700;
  color: var(--hd-main);
  opacity: 0.03;
  letter-spacing: 0.08em;
  pointer-events: none;
  line-height: 1;
}

.hd-works-single__concept-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(3rem, 7vw, 5rem);
  align-items: center;
}

.hd-works-single__concept-grid::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 2rem;
  background: var(--hd-warm);
  border-radius: 2px;
}

@media (min-width: 768px) {
  .hd-works-single__concept-grid {
    grid-template-columns: minmax(0, 1fr) minmax(20rem, 1fr);
  }
}

.hd-works-single__concept-image {
  margin: 0;
  box-shadow:
    0 20px 50px rgba(27, 67, 93, 0.12),
    0 0 0 1px rgba(27, 67, 93, 0.05);
  border-radius: 2px;
  transition:
    box-shadow var(--hd-transition),
    transform var(--hd-transition);
}

.hd-works-single__concept-grid:hover .hd-works-single__concept-image {
  box-shadow:
    0 30px 70px rgba(27, 67, 93, 0.16),
    0 0 0 1px rgba(27, 67, 93, 0.08);
  transform: translateY(-4px);
}

.hd-works-single__concept-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ==============================
   ④ Gallery
   ============================== */
.hd-works-single__section--gallery {
  background-color: var(--hd-bg);
  background-image:
    radial-gradient(
      circle at 100% 0%,
      rgba(27, 67, 93, 0.04) 0%,
      transparent 40%
    ),
    linear-gradient(
      180deg,
      rgba(249, 159, 72, 0.02) 0%,
      transparent 50%,
      rgba(120, 187, 230, 0.04) 100%
    );
  position: relative;
}

.hd-works-single__section--gallery .hd-works-single__sec-header {
  position: relative;
  z-index: 1;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(27, 67, 93, 0.12);
}

.hd-works-single__gallery-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .hd-works-single__gallery-grid {
    grid-template-columns: 1fr 0.75fr;
    align-items: stretch;
  }
}

.hd-works-single__gallery-main {
  margin: 0;
  box-shadow: 0 10px 30px rgba(27, 67, 93, 0.08);
  border-radius: 4px;
  overflow: hidden;
  transition:
    box-shadow var(--hd-transition),
    transform var(--hd-transition);
}

.hd-works-single__gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hd-works-single__gallery-grid:hover .hd-works-single__gallery-main {
  box-shadow: 0 15px 45px rgba(27, 67, 93, 0.12);
  transform: translateY(-2px);
}

.hd-works-single__gallery-sub {
  display: grid;
  gap: 2rem;
}

.hd-works-single__gallery-sub-item {
  margin: 0;
  box-shadow: 0 10px 30px rgba(27, 67, 93, 0.08);
  border-radius: 4px;
  overflow: hidden;
  transition:
    box-shadow var(--hd-transition),
    transform var(--hd-transition);
}

.hd-works-single__gallery-sub-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hd-works-single__gallery-grid:hover .hd-works-single__gallery-sub-item {
  box-shadow: 0 15px 45px rgba(27, 67, 93, 0.12);
  transform: translateY(-2px);
}

.hd-works-single__gallery-extra {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr));
  gap: 2rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(27, 67, 93, 0.08);
}

.hd-works-single__gallery-extra-item {
  margin: 0;
  box-shadow: 0 10px 30px rgba(27, 67, 93, 0.08);
  border-radius: 4px;
  overflow: hidden;
  transition:
    box-shadow var(--hd-transition),
    transform var(--hd-transition);
}

.hd-works-single__gallery-extra-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hd-works-single__gallery-extra:hover .hd-works-single__gallery-extra-item {
  box-shadow: 0 15px 45px rgba(27, 67, 93, 0.12);
  transform: translateY(-2px);
}

/* ==============================
   ⑤ Before / After
   ============================== */
.hd-works-single__section--ba {
  background-color: var(--hd-main);
  background-image:
    radial-gradient(
      circle at 20% 50%,
      rgba(120, 187, 230, 0.08) 0%,
      transparent 40%
    ),
    radial-gradient(
      ellipse 1000px 800px at 80% 100%,
      rgba(249, 159, 72, 0.04) 0%,
      transparent 60%
    ),
    linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.02) 0%,
      transparent 100%
    );
  color: var(--hd-white);
  position: relative;
}

.hd-works-single__section--ba .hd-works-single__sec-header {
  position: relative;
  z-index: 1;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.hd-works-single__section--ba .hd-works-single__sec-en,
.hd-works-single__section--ba .hd-works-single__sec-ja {
  color: var(--hd-white);
}

.hd-works-single__section--ba .hd-works-single__sec-line {
  background-color: var(--hd-warm);
  opacity: 0.6;
}

.hd-works-single__ba-note {
  text-align: right;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
}

.hd-works-single__ba-full {
  margin-bottom: 4rem;
}

.hd-works-single__ba-grid {
  display: grid;
  gap: 3rem 2rem;
}

@media (min-width: 768px) {
  .hd-works-single__ba-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.hd-ba-slider-item {
  background: rgba(255, 255, 255, 0.03);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition:
    background var(--hd-transition),
    border-color var(--hd-transition);
}

.hd-ba-slider-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.15);
}

.hd-ba-slider-item__header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.hd-ba-slider-item__num {
  font-family: var(--hd-font-serif);
  font-size: 1.25rem;
  color: var(--hd-warm);
}

.hd-ba-slider-item__caption {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.hd-ba-slider {
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
  border-radius: 8px;
}

.hd-ba-slider__label {
  position: absolute;
  top: 1.5rem;
  bottom: auto;
  padding: 0;
  background: transparent;
  font-family: var(--hd-font-serif);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--hd-white);
  pointer-events: none;
}

.hd-ba-slider__label--before { 
  left: 1.5rem; 
  right: auto;
}
.hd-ba-slider__label--after { 
  right: 1.5rem; 
  left: auto;
}

/* ==============================
   ⑥ Planning Points
   ============================== */
.hd-works-single__section--points {
  background-color: var(--hd-bg);
  background-image:
    radial-gradient(
      circle at 50% -20%,
      rgba(249, 159, 72, 0.06) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 100% 100%,
      rgba(27, 67, 93, 0.04) 0%,
      transparent 50%
    );
  position: relative;
}

.hd-works-single__points-grid {
  display: grid;
  gap: 2.5rem;
  margin-top: 4rem;
}

.hd-works-single__section--points .hd-works-single__sec-header {
  position: relative;
  z-index: 1;
}

@media (min-width: 768px) {
  .hd-works-single__points-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.hd-works-single__point-card {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 2rem;
  background: var(--hd-white);
  border: 1px solid rgba(27, 67, 93, 0.08);
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(27, 67, 93, 0.05);
  transition:
    box-shadow var(--hd-transition),
    transform var(--hd-transition),
    border-color var(--hd-transition);
}

.hd-works-single__point-card:hover {
  box-shadow: 0 12px 32px rgba(27, 67, 93, 0.12);
  transform: translateY(-4px);
  border-color: var(--hd-warm);
}

.hd-works-single__point-num-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hd-works-single__point-num {
  display: grid;
  place-items: center;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background-color: var(--hd-warm);
  color: var(--hd-white);
  font-family: var(--hd-font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(249, 159, 72, 0.25);
  transition:
    box-shadow var(--hd-transition),
    transform var(--hd-transition);
}

.hd-works-single__point-card:hover .hd-works-single__point-num {
  box-shadow: 0 8px 24px rgba(249, 159, 72, 0.35);
  transform: scale(1.05);
}

.hd-works-single__point-num-line {
  flex: 1;
  height: 2px;
  background: linear-gradient(
    to right,
    var(--hd-warm),
    var(--hd-warm) 50%,
    transparent 100%
  );
  opacity: 0.5;
  transition: opacity var(--hd-transition);
}

.hd-works-single__point-card:hover .hd-works-single__point-num-line {
  opacity: 1;
}

.hd-works-single__point-title {
  margin: 0 0 1rem;
  font-family: var(--hd-font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--hd-main);
  line-height: 1.4;
  transition: color var(--hd-transition);
}

.hd-works-single__point-card:hover .hd-works-single__point-title {
  color: var(--hd-warm);
}

.hd-works-single__point-num-digit {
  font-size: 1.2rem;
  font-weight: 700;
}

.hd-works-single__point-desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 2;
  color: rgba(46, 56, 66, 0.8);
}

/* ==============================
   ⑦ Back Button
   ============================== */
.hd-works-single__back {
  padding: 4rem 0 6rem;
  text-align: center;
  background-color: var(--hd-bg);
}

.hd-btn--back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 16rem;
  height: 3.5rem;
  border: 1px solid rgba(27, 67, 93, 0.3);
  background-color: transparent;
  color: var(--hd-main);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: all 0.3s ease;
}

.hd-btn--back:hover {
  background-color: var(--hd-main);
  border-color: var(--hd-main);
  color: var(--hd-white);
}