:root {
  --choc-cocoa: #2d1d18;
  --choc-cocoa-soft: #4b3028;
  --choc-berry: #b94762;
  --choc-berry-dark: #8f3048;
  --choc-cream: #f6eee3;
  --choc-milk: #eadbc8;
  --choc-gold: #d8a84e;
  --choc-paper: #fbf8f2;
  --choc-line: rgba(45, 29, 24, 0.2);
}

.choc-case-page {
  overflow-x: clip;
  background: var(--choc-paper);
  color: var(--choc-cocoa);
}

.choc-case-page::selection {
  background: var(--choc-gold);
  color: var(--choc-cocoa);
}

.choc-case-page .site-header {
  border-bottom-color: rgba(45, 29, 24, 0.18);
  background: rgba(251, 248, 242, 0.94);
}

.choc-case-page section[id] {
  scroll-margin-top: 92px;
}

.choc-case-page h1,
.choc-case-page h2,
.choc-case-page h3,
.choc-case-page p {
  text-wrap: pretty;
}

.choc-hero {
  position: relative;
  border-bottom: 1px solid var(--choc-line);
  background:
    radial-gradient(circle at 78% 26%, rgba(216, 168, 78, 0.2), transparent 30%),
    linear-gradient(135deg, #f9f2e8 0%, #f4e8d9 100%);
}

.choc-hero::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(45, 29, 24, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 29, 24, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
  content: "";
  mask-image: linear-gradient(to right, #000, transparent 72%);
}

.choc-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(340px, 0.58fr);
  gap: clamp(46px, 7vw, 108px);
  align-items: center;
  min-height: min(760px, calc(100vh - 72px));
  padding-top: clamp(56px, 7vw, 92px);
  padding-bottom: clamp(54px, 7vw, 88px);
}

.choc-hero-copy {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.choc-eyebrow,
.choc-index {
  margin: 0;
  color: var(--choc-berry-dark);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.choc-hero h1 {
  max-width: 760px;
  margin: 20px 0 0;
  font-size: clamp(42px, 5vw, 54px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.05em;
}

.choc-hero h1 span {
  display: block;
  color: var(--choc-berry-dark);
}

.choc-lead {
  max-width: 680px;
  margin: 26px 0 0;
  color: var(--choc-cocoa-soft);
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.78;
}

.choc-hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 680px;
  margin: 28px 0 0;
  border-top: 1px solid var(--choc-line);
  border-bottom: 1px solid var(--choc-line);
  padding: 0;
  list-style: none;
}

.choc-hero-proof li {
  display: grid;
  gap: 3px;
  padding: 14px 14px 14px 0;
}

.choc-hero-proof strong {
  color: var(--choc-berry-dark);
  font-size: 17px;
  line-height: 1.1;
}

.choc-hero-proof span {
  color: var(--choc-cocoa-soft);
  font-size: 11px;
  font-weight: 750;
  line-height: 1.35;
}

.choc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.choc-button-primary {
  border-color: var(--choc-cocoa) !important;
  background: var(--choc-cocoa) !important;
  color: #ffffff !important;
}

.choc-button-ghost {
  border-color: var(--choc-cocoa) !important;
  background: transparent !important;
  color: var(--choc-cocoa) !important;
}

.choc-hero-visual {
  position: relative;
  z-index: 1;
  width: min(100%, 470px);
  margin: 0 auto;
  border: 1px solid var(--choc-cocoa);
  background: rgba(255, 255, 255, 0.54);
  box-shadow: 14px 14px 0 rgba(185, 71, 98, 0.13);
}

.choc-hero-visual::before {
  position: absolute;
  z-index: 2;
  top: 16px;
  right: 16px;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--choc-gold);
  color: var(--choc-cocoa);
  content: "自有\A品牌";
  display: grid;
  place-items: center;
  white-space: pre;
  font-size: 12px;
  font-weight: 900;
  line-height: 1.2;
  text-align: center;
  transform: rotate(8deg);
}

.choc-hero-visual img {
  display: block;
  width: 100%;
  max-height: 520px;
  object-fit: contain;
}

.choc-hero-visual figcaption,
.product-card figcaption {
  display: grid;
  gap: 4px;
  border-top: 1px solid var(--choc-line);
  background: rgba(255, 255, 255, 0.72);
  padding: 15px 18px 17px;
}

.choc-hero-visual figcaption span,
.product-card figcaption span {
  color: var(--choc-berry-dark);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.06em;
}

.choc-hero-visual figcaption strong,
.product-card figcaption strong {
  font-size: 14px;
  line-height: 1.5;
}

.choc-facts {
  border-bottom: 1px solid var(--choc-line);
  background: var(--choc-cocoa);
  color: #ffffff;
}

.choc-facts-grid {
  display: grid;
  grid-template-columns: 1.1fr 1.2fr 1.1fr 0.9fr;
}

.choc-facts-grid > div {
  display: grid;
  align-content: start;
  gap: 8px;
  min-height: 132px;
  border-left: 1px solid rgba(255, 255, 255, 0.16);
  padding: 26px 24px;
}

.choc-facts-grid > div:last-child {
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.choc-facts span {
  color: rgba(255, 255, 255, 0.6);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.06em;
}

.choc-facts strong {
  font-size: 15px;
  line-height: 1.55;
}

.choc-thesis,
.choc-origin,
.choc-decisions,
.choc-products,
.choc-evidence,
.choc-offline,
.choc-transfer {
  border-bottom: 1px solid var(--choc-line);
}

.choc-thesis,
.choc-origin,
.choc-decisions,
.choc-products,
.choc-offline,
.choc-transfer {
  padding: clamp(72px, 9vw, 126px) 0;
}

.choc-thesis-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.46fr) minmax(0, 1fr);
  gap: clamp(36px, 7vw, 104px);
  align-items: center;
}

.choc-thesis-grid > div {
  max-width: 940px;
}

.choc-thesis-visual {
  margin: 0;
  border: 1px solid var(--choc-line);
  background: var(--choc-cream);
}

.choc-thesis-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: contain;
}

.choc-thesis-visual figcaption {
  border-top: 1px solid var(--choc-line);
  padding: 12px 14px;
  color: var(--choc-cocoa-soft);
  font-size: 12px;
  line-height: 1.5;
}

.choc-thesis h2,
.choc-section-heading h2,
.choc-origin h2,
.choc-evidence h2,
.choc-offline h2,
.choc-contact h2 {
  margin: 0;
  font-size: clamp(36px, 4.4vw, 54px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.045em;
}

.choc-thesis h2 + p {
  max-width: 790px;
  margin: 28px 0 0;
  color: var(--choc-cocoa-soft);
  font-size: 18px;
  line-height: 1.85;
}

.choc-origin {
  background: #ffffff;
}

.choc-origin-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.58fr) minmax(0, 1fr);
  gap: clamp(50px, 8vw, 120px);
  align-items: center;
}

.choc-origin figure {
  margin: 0;
  border: 1px solid var(--choc-line);
  background: var(--choc-cream);
}

.choc-origin figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.choc-origin figcaption {
  border-top: 1px solid var(--choc-line);
  padding: 12px 16px;
  color: var(--choc-cocoa-soft);
  font-size: 12px;
}

.choc-origin h2 {
  max-width: 760px;
  margin-top: 14px;
}

.choc-origin h2 + p {
  max-width: 720px;
  margin: 28px 0 0;
  color: var(--choc-cocoa-soft);
  font-size: 17px;
  line-height: 1.82;
}

.choc-origin blockquote {
  max-width: 720px;
  margin: 30px 0 0;
  border-left: 4px solid var(--choc-berry);
  background: var(--choc-cream);
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 750;
  line-height: 1.75;
}

.choc-decisions {
  background: var(--choc-cocoa);
  color: #ffffff;
}

.choc-decisions .choc-index,
.choc-contact .choc-index {
  color: var(--choc-gold);
}

.choc-section-heading {
  max-width: 980px;
}

.choc-section-heading h2 {
  margin-top: 14px;
}

.decision-rail {
  display: grid;
  margin: clamp(52px, 7vw, 80px) 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.24);
  padding: 0;
  list-style: none;
}

.decision-rail li {
  position: relative;
  display: grid;
  grid-template-columns: 94px minmax(0, 1fr);
  gap: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  padding: 34px 0;
}

.decision-number {
  color: var(--choc-gold);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.decision-label {
  margin: 0;
  color: var(--choc-gold);
  font-size: 12px;
  font-weight: 900;
}

.decision-rail h3 {
  max-width: 900px;
  margin: 8px 0 0;
  font-size: clamp(24px, 2.5vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.decision-rail h3 + p {
  max-width: 760px;
  margin: 16px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 16px;
  line-height: 1.75;
}

.decision-rail small {
  display: block;
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 12px;
}

.choc-products {
  background: #f1e6d7;
}

.choc-heading-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.36fr);
  gap: clamp(36px, 8vw, 112px);
  align-items: end;
  max-width: none;
}

.choc-heading-split > p {
  margin: 0 0 6px;
  color: var(--choc-cocoa-soft);
  font-size: 16px;
  line-height: 1.75;
}

.product-gallery {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr 0.9fr;
  gap: 18px;
  align-items: stretch;
  margin-top: clamp(44px, 6vw, 68px);
}

.product-gallery-two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.product-card {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  margin: 0;
  border: 1px solid var(--choc-cocoa);
  background: rgba(255, 255, 255, 0.68);
}

.product-card img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: contain;
}

.choc-evidence {
  padding: clamp(68px, 8vw, 110px) 0;
  background: var(--choc-berry-dark);
  color: #ffffff;
}

.choc-evidence-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(430px, 0.92fr);
  gap: clamp(48px, 8vw, 112px);
  align-items: start;
}

.choc-evidence .choc-index {
  color: var(--choc-gold);
}

.choc-evidence h2 {
  margin-top: 14px;
}

.choc-evidence header > p:last-child {
  max-width: 600px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 16px;
  line-height: 1.75;
}

.evidence-panel {
  border: 1px solid rgba(255, 255, 255, 0.42);
  background: rgba(45, 29, 24, 0.16);
}

.evidence-primary {
  display: grid;
  gap: 4px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.25);
  padding: 30px 34px;
}

.evidence-primary small {
  color: rgba(255, 255, 255, 0.62);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.evidence-primary strong {
  color: var(--choc-gold);
  font-size: clamp(64px, 9vw, 112px);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.07em;
}

.evidence-primary span {
  font-size: 15px;
  font-weight: 900;
}

.evidence-panel dl {
  margin: 0;
}

.evidence-panel dl > div {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  padding: 18px 34px;
}

.evidence-panel dl > div:last-child {
  border-bottom: 0;
}

.evidence-panel dt {
  color: rgba(255, 255, 255, 0.58);
  font-size: 12px;
  font-weight: 850;
}

.evidence-panel dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
}

.choc-offline {
  background: #ffffff;
}

.choc-offline-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(420px, 0.88fr);
  gap: clamp(52px, 8vw, 116px);
  align-items: center;
}

.choc-offline h2 {
  margin-top: 14px;
}

.choc-offline h2 + p {
  margin: 26px 0 0;
  color: var(--choc-cocoa-soft);
  font-size: 16px;
  line-height: 1.8;
}

.choc-offline ul {
  display: grid;
  gap: 10px;
  margin: 28px 0 0;
  padding-left: 20px;
  color: var(--choc-cocoa-soft);
  font-size: 15px;
}

.choc-offline figure {
  margin: 0;
  border: 1px solid var(--choc-cocoa);
  background: var(--choc-cream);
}

.choc-offline figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.choc-offline figcaption {
  border-top: 1px solid var(--choc-line);
  padding: 14px 16px;
  color: var(--choc-cocoa-soft);
  font-size: 12px;
  line-height: 1.55;
}

.choc-transfer {
  background: var(--choc-cream);
}

.transfer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: clamp(44px, 6vw, 70px);
  border: 1px solid var(--choc-cocoa);
  background: var(--choc-cocoa);
  gap: 1px;
}

.transfer-grid article {
  min-height: 280px;
  background: var(--choc-paper);
  padding: clamp(26px, 3vw, 38px);
}

.transfer-grid article > span {
  color: var(--choc-berry-dark);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  font-weight: 900;
}

.transfer-grid h3 {
  margin: 38px 0 0;
  font-size: 25px;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.transfer-grid p {
  margin: 16px 0 0;
  color: var(--choc-cocoa-soft);
  font-size: 15px;
  line-height: 1.72;
}

.choc-boundary {
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  background: var(--choc-cocoa-soft);
  padding: 36px 0;
  color: #ffffff;
}

.choc-boundary .section-shell {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 30px;
}

.choc-boundary .choc-index {
  color: var(--choc-gold);
}

.choc-boundary p:last-child {
  max-width: 940px;
  margin: 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  line-height: 1.75;
}

.choc-contact {
  background: var(--choc-cocoa);
  padding: clamp(72px, 9vw, 120px) 0;
  color: #ffffff;
}

.choc-contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 56px;
  align-items: end;
}

.choc-contact h2 {
  max-width: 900px;
  margin-top: 14px;
}

.choc-contact h2 + p {
  max-width: 720px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 16px;
  line-height: 1.75;
}

.choc-contact-actions {
  display: grid;
  gap: 12px;
  min-width: 190px;
}

.choc-contact .choc-button-primary {
  border-color: var(--choc-gold) !important;
  background: var(--choc-gold) !important;
  color: var(--choc-cocoa) !important;
}

.choc-contact .choc-button-ghost {
  border-color: rgba(255, 255, 255, 0.46) !important;
  color: #ffffff !important;
}

@media (max-width: 1100px) {
  .choc-hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.48fr);
    gap: 42px;
  }

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

  .choc-facts-grid > div:nth-child(3),
  .choc-facts-grid > div:nth-child(4) {
    border-top: 1px solid rgba(255, 255, 255, 0.16);
  }

  .choc-evidence-grid,
  .choc-offline-grid {
    grid-template-columns: 1fr;
  }

  .choc-offline figure {
    max-width: 820px;
  }
}

@media (min-width: 701px) and (max-width: 960px) {
  .choc-hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 0.42fr);
    min-height: auto;
  }

  .choc-hero h1 {
    font-size: clamp(40px, 5.4vw, 50px);
  }

  .choc-hero-visual img {
    max-height: 430px;
  }

  .choc-origin-grid {
    grid-template-columns: minmax(260px, 0.46fr) minmax(0, 1fr);
    gap: 42px;
  }

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

  .product-card-tall {
    grid-column: 1 / -1;
  }

  .product-card-tall img {
    height: 480px;
  }

  .transfer-grid {
    grid-template-columns: 1fr;
  }

  .transfer-grid article {
    min-height: 0;
  }
}

@media (max-width: 700px) {
  .choc-case-page section[id] {
    scroll-margin-top: 76px;
  }

  .choc-hero::before {
    background-size: 32px 32px;
    mask-image: linear-gradient(to bottom, #000, transparent 68%);
  }

  .choc-hero-grid {
    grid-template-columns: 1fr;
    gap: 34px;
    min-height: auto;
    padding-top: 42px;
    padding-bottom: 48px;
  }

  .choc-hero h1,
  .choc-thesis h2,
  .choc-section-heading h2,
  .choc-origin h2,
  .choc-evidence h2,
  .choc-offline h2,
  .choc-contact h2 {
    font-size: clamp(30px, 9vw, 34px);
    line-height: 1.16;
    letter-spacing: -0.035em;
  }

  .choc-hero h1 {
    margin-top: 15px;
  }

  .choc-lead {
    margin-top: 20px;
    font-size: 16px;
    line-height: 1.72;
  }

  .choc-hero-proof {
    margin-top: 22px;
  }

  .choc-hero-proof li {
    padding: 12px 8px 12px 0;
  }

  .choc-hero-proof strong {
    font-size: 15px;
  }

  .choc-hero-proof span {
    font-size: 10px;
  }

  .choc-actions {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: 28px;
  }

  .choc-actions .button {
    justify-content: center;
    width: 100%;
  }

  .choc-hero-visual {
    width: min(100%, 390px);
    box-shadow: 9px 9px 0 rgba(185, 71, 98, 0.13);
  }

  .choc-hero-visual::before {
    top: 11px;
    right: 11px;
    width: 58px;
    height: 58px;
    font-size: 10px;
  }

  .choc-hero-visual img {
    max-height: 420px;
  }

  .choc-facts-grid {
    grid-template-columns: 1fr;
  }

  .choc-facts-grid > div {
    min-height: 0;
    border: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
    padding: 20px 0;
  }

  .choc-facts-grid > div:nth-child(3),
  .choc-facts-grid > div:nth-child(4),
  .choc-facts-grid > div:last-child {
    border-right: 0;
    border-top: 0;
  }

  .choc-thesis,
  .choc-origin,
  .choc-decisions,
  .choc-products,
  .choc-offline,
  .choc-transfer {
    padding: 62px 0;
  }

  .choc-thesis-grid,
  .choc-origin-grid,
  .choc-heading-split,
  .choc-evidence-grid,
  .choc-offline-grid,
  .choc-contact-grid,
  .choc-boundary .section-shell {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .choc-thesis h2 + p,
  .choc-origin h2 + p {
    margin-top: 20px;
    font-size: 16px;
  }

  .choc-origin figure {
    max-width: 430px;
  }

  .choc-origin blockquote {
    margin-top: 24px;
    padding: 17px 18px;
    font-size: 15px;
  }

  .decision-rail {
    margin-top: 38px;
  }

  .decision-rail li {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 14px;
    padding: 26px 0;
  }

  .decision-rail h3 {
    font-size: 23px;
  }

  .decision-rail h3 + p {
    font-size: 15px;
  }

  .product-gallery {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 36px;
  }

  .product-card img {
    height: auto;
  }

  .choc-evidence {
    padding: 62px 0;
  }

  .evidence-primary {
    padding: 26px 20px;
  }

  .evidence-primary strong {
    font-size: clamp(58px, 23vw, 84px);
  }

  .evidence-panel dl > div {
    grid-template-columns: 1fr;
    gap: 5px;
    padding: 16px 20px;
  }

  .transfer-grid {
    grid-template-columns: 1fr;
    margin-top: 36px;
  }

  .transfer-grid article {
    min-height: 0;
    padding: 26px 22px;
  }

  .transfer-grid h3 {
    margin-top: 26px;
    font-size: 23px;
  }

  .choc-boundary {
    padding: 30px 0;
  }

  .choc-contact {
    padding: 62px 0;
  }

  .choc-contact-actions {
    grid-template-columns: 1fr;
    min-width: 0;
  }

  .choc-contact-actions .button {
    justify-content: center;
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .choc-case-page *,
  .choc-case-page *::before,
  .choc-case-page *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}