[data-version="v8"] {
  --v4-blue: #075aa8;
  --v4-cyan: #1597ad;
  --v4-navy: #071d3b;
  --v4-sky: #eef8fc;
}

.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;
}

/* V6: 2026-07-26の情報設計に追加したセクション */
[data-version="v8"] .product-hero__support {
  max-width: 42rem;
  margin: 1rem 0 0;
  color: #dce8f1;
  font-size: clamp(.92rem, 1.2vw, 1.05rem);
  line-height: 1.8;
}

.v6-hero-proofs {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: stretch;
  gap: .75rem;
  max-width: 46rem;
  margin-top: .5rem;
}

.v6-hero-proofs__label {
  margin: 1.15rem 0 0;
  color: #dce8f1;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .06em;
}

.v6-hero-proofs > div {
  position: relative;
  display: flex;
  justify-content: center;
  min-height: 8.5rem;
  min-width: 0;
  padding: .8rem 1rem;
  border: 1px solid rgba(89, 213, 255, .28);
  background: rgba(4, 22, 41, .72);
}

.v6-hero-proofs strong {
  position: absolute;
  top: .8rem;
  right: 1rem;
  left: 1rem;
  color: #8ee4f0;
  font-size: .78rem;
  font-weight: 800;
  line-height: 1.5;
}

.v6-hero-proofs span {
  align-self: center;
  width: 100%;
  color: #fff;
  font-size: clamp(.92rem, 1.15vw, 1.05rem);
  font-weight: 800;
  line-height: 1.5;
}
.v6-hero-proofs > i { align-self: center; color: var(--v4-accent); font-size: 1.3rem; font-style: normal; font-weight: 900; }

.section--overview { position: relative; overflow: hidden; }

.v6-overview-copy {
  display: grid;
  gap: .75rem;
  max-width: 62rem;
  margin-top: 1.5rem;
  color: #4f6575;
  line-height: 1.85;
}

.v6-overview-copy p { margin: 0; }
.v6-overview-heading { margin: 2.25rem 0 0; color: var(--v4-navy); font-size: clamp(1.15rem, 1.8vw, 1.45rem); }
.v6-targets-heading { margin: 2.25rem 0 0; color: var(--v4-navy); font-size: clamp(1.15rem, 1.8vw, 1.45rem); }
.v6-scope-copy,
.v6-approach-copy,
.v6-deliverables-copy,
.v6-after-support-copy { display: grid; gap: .65rem; margin-top: 1.5rem; line-height: 1.85; }
.v6-scope-copy p,
.v6-approach-copy p,
.v6-deliverables-copy p,
.v6-after-support-copy p { margin: 0; }
.v6-scope-copy { max-width: 62rem; color: rgba(255, 255, 255, .8); }
.v6-approach-copy,
.v6-deliverables-copy { max-width: 62rem; color: #4f6575; }
.v6-after-support-copy { max-width: 62rem; color: rgba(255, 255, 255, .8); }
.v6-scope-heading { margin: 2.25rem 0 0; color: #fff; font-size: clamp(1.15rem, 1.8vw, 1.45rem); }
.v6-scope-area-heading { margin: 2.25rem 0 0; color: #fff; font-size: clamp(1.15rem, 1.8vw, 1.45rem); }

.v6-scope-area-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.v6-scope-area-grid article {
  min-width: 0;
  padding: 1.25rem;
  border-top: 3px solid #59d5ff;
  background: #fff;
  color: var(--v4-navy);
}

.v6-scope-area-grid article > span { color: var(--v4-blue); font-size: .78rem; font-weight: 900; }
.v6-scope-area-grid h4 { margin: .7rem 0 .6rem; color: var(--v4-navy); font-size: 1rem; line-height: 1.45; }
.v6-scope-area-grid ul { margin: 0; padding-left: 1.1rem; color: #4f6575; font-size: .78rem; line-height: 1.75; }

.v6-overview-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}

.v6-overview-steps article,
.v6-diagnostic-matrix article {
  padding: clamp(1.25rem, 2.5vw, 2rem);
  border: 1px solid rgba(18, 64, 95, .15);
  border-radius: 1rem;
  background: #fff;
  box-shadow: 0 1rem 2.5rem rgba(15, 44, 66, .08);
}

.v6-overview-steps article > span,
.v6-diagnostic-matrix article > span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  margin-bottom: 1rem;
  border-radius: 999px;
  background: var(--v4-accent);
  color: #021526;
  font-weight: 800;
}

.v6-overview-steps h3,
.v6-diagnostic-matrix h3 { margin: 0 0 .65rem; }

.v6-overview-steps p,
.v6-diagnostic-matrix p { margin: 0; color: #4f6575; line-height: 1.75; }

[data-version="v8"] .v8-attack-flow-shell {
  --v8-attack-blue: #087eaf;
  max-width: 100%;
  margin-top: 2.5rem;
  padding: clamp(2rem, 5vw, 4.5rem) clamp(1rem, 3vw, 2.5rem);
  border: 1px solid rgba(7, 126, 175, .08);
  border-radius: clamp(1.75rem, 4vw, 4.5rem);
  background: linear-gradient(180deg, #fbfdff 0%, #f2f6f9 100%);
}

[data-version="v8"] .v8-attack-flow {
  --v8-attack-gap: clamp(1.4rem, 2vw, 2rem);
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: var(--v8-attack-gap);
  margin: 0;
  padding: 0;
  list-style: none;
}

[data-version="v8"] .v8-attack-flow__card {
  position: relative;
  display: flex;
  min-height: 17rem;
  flex-direction: column;
  padding: clamp(1.25rem, 1.8vw, 1.6rem);
  border: 1px solid #bddbe9;
  border-radius: .45rem;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 .65rem 1.35rem rgba(10, 50, 75, .08);
}

[data-version="v8"] .v8-attack-flow__number {
  color: var(--v8-attack-blue);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: clamp(1.75rem, 2.2vw, 2.25rem);
  font-weight: 900;
  letter-spacing: -.06em;
  line-height: 1;
}

[data-version="v8"] .v8-attack-flow__label {
  width: fit-content;
  max-width: calc(100% - 1.75rem);
  margin-top: 2rem;
  padding-bottom: .55rem;
  border-bottom: 1px solid #d9eaf2;
  color: var(--v8-attack-blue);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: clamp(.58rem, .68vw, .7rem);
  font-weight: 900;
  letter-spacing: .12em;
  line-height: 1.35;
}

[data-version="v8"] .v8-attack-flow__card strong {
  margin-top: 1.15rem;
  color: #061d35;
  font-size: clamp(.94rem, 1.25vw, 1.18rem);
  line-height: 1.55;
}

[data-version="v8"] .v8-attack-flow__arrow {
  position: absolute;
  top: 6.55rem;
  right: calc(-1 * var(--v8-attack-gap) / 2 - 1px);
  color: #1695c2;
  font-size: 1.55rem;
  font-weight: 300;
  line-height: 1;
  transform: translateX(50%);
}

@media (max-width: 1180px) {
  [data-version="v8"] .v8-attack-flow { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  [data-version="v8"] .v8-attack-flow__card:nth-child(4) { grid-column: 3; grid-row: 2; }
  [data-version="v8"] .v8-attack-flow__card:nth-child(5) { grid-column: 2; grid-row: 2; }
  [data-version="v8"] .v8-attack-flow__card:nth-child(6) { grid-column: 1; grid-row: 2; }
  [data-version="v8"] .v8-attack-flow__card:nth-child(3) .v8-attack-flow__arrow {
    top: auto;
    right: 50%;
    bottom: calc(-1 * var(--v8-attack-gap) / 2 - 1px);
    transform: translate(50%, 50%) rotate(90deg);
  }
  [data-version="v8"] .v8-attack-flow__card:nth-child(4) .v8-attack-flow__arrow,
  [data-version="v8"] .v8-attack-flow__card:nth-child(5) .v8-attack-flow__arrow {
    right: auto;
    left: calc(-1 * var(--v8-attack-gap) / 2 - 1px);
    transform: translateX(-50%) rotate(180deg);
  }
}

@media (max-width: 720px) {
  [data-version="v8"] .v8-attack-flow-shell { padding: 1.5rem 1rem; border-radius: 1.75rem; }
  [data-version="v8"] .v8-attack-flow { --v8-attack-gap: 2.25rem; grid-template-columns: 1fr; gap: var(--v8-attack-gap); }
  [data-version="v8"] .v8-attack-flow__card:nth-child(n) { min-height: 12.5rem; grid-column: auto; grid-row: auto; }
  [data-version="v8"] .v8-attack-flow__label { margin-top: 1.5rem; }
  [data-version="v8"] .v8-attack-flow__card:nth-child(n) .v8-attack-flow__arrow {
    top: auto;
    left: auto;
    right: 50%;
    bottom: calc(-1 * var(--v8-attack-gap) / 2 - 1px);
    transform: translate(50%, 50%) rotate(90deg);
  }
}

.v6-diagnostic-matrix {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}

.v6-features-copy {
  display: grid;
  gap: .65rem;
  max-width: 62rem;
  margin-top: 1.5rem;
}

.v6-features-copy p { margin: 0; color: rgba(255, 255, 255, .8); line-height: 1.85; }

.v6-feature-proof {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(142, 228, 240, .35);
}

.v6-feature-proof h3 { margin: 0 0 .5rem; color: #fff; font-size: clamp(1.05rem, 1.5vw, 1.25rem); }
.v6-feature-proof p { margin: 0; color: rgba(255, 255, 255, .8); line-height: 1.8; }

.v6-competition-panel {
  display: grid;
  grid-template-columns: minmax(12rem, .28fr) minmax(0, .72fr);
  margin-top: 1.5rem;
  border: 1px solid rgba(89, 213, 255, .28);
  background: #0d2438;
}

.v6-competition-panel__label {
  display: flex;
  min-height: 18rem;
  flex-direction: column;
  justify-content: center;
  gap: .75rem;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  background: #0b3456;
}

.v6-competition-panel__label small,
.v6-competition-achievement small { color: #75ddff; font-size: .72rem; font-weight: 900; letter-spacing: .1em; }
.v6-competition-panel__label strong { color: #fff; font-size: clamp(1.65rem, 3vw, 2.35rem); line-height: 1.1; }

.v6-competition-panel__body { display: flex; flex-direction: column; justify-content: center; padding: clamp(1.5rem, 3vw, 2.5rem); }
.v6-competition-panel__body > span { color: #fff; font-size: clamp(1.25rem, 2.15vw, 1.9rem); font-weight: 800; line-height: 1.45; }
.v6-competition-panel__body > p { margin-top: .9rem; }

.v6-competition-achievement {
  margin-top: 1.25rem;
  padding: 1.1rem 1.25rem;
  border: 1px solid rgba(89, 213, 255, .24);
  background: #041629;
}

.v6-competition-achievement strong { display: block; margin-top: .35rem; color: #fff; line-height: 1.5; }
.v6-competition-achievement p { margin-top: .45rem; color: rgba(255, 255, 255, .72); font-size: .82rem; }

.v6-contextual-cta .contextual-cta__inner > div { display: grid; gap: .25rem; }
.v6-contextual-cta .contextual-cta__inner span { color: rgba(255, 255, 255, .78); font-size: .92rem; }

@media (max-width: 980px) {
  [data-version="v8"] .v4-option1-hero__copy,
  [data-version="v8"] .v4-option1-hero__visual { width: 100%; }
  .v6-scope-area-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .v6-overview-steps,
  .v6-diagnostic-matrix,
  .v6-scope-area-grid { grid-template-columns: 1fr; }
  .v6-hero-proofs { grid-template-columns: 1fr; }
  .v6-hero-proofs > i { justify-self: center; line-height: 1; }
  .v6-attack-flow { min-width: 0; padding: 0; }
  .v6-competition-panel { grid-template-columns: 1fr; }
  .v6-competition-panel__label { min-height: auto; }
}

/*
 * Keep Japanese copy in semantic phrases across the full LP. Chrome supports
 * auto-phrase; the normal value remains the fallback for other browsers.
 */
[data-version="v8"] :is(h1, h2, h3, p, li, summary, .btn) {
  overflow-wrap: break-word;
  word-break: normal;
}

[data-version="v8"] :is(p, li, summary, .btn) {
  word-break: auto-phrase;
  text-wrap: pretty;
}

[data-version="v8"] :is(h1, h2, h3) { text-wrap: balance; }

[data-version="v8"] .launch-badge {
  width: fit-content;
  display: flex;
  align-items: center;
  gap: .55rem;
  margin: 0 0 var(--space-4);
  padding: .45rem .8rem;
  border: 1px solid rgba(7, 90, 168, .24);
  border-radius: var(--radius-pill);
  background: #fff;
  color: var(--v4-blue);
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: .04em;
}

[data-version="v8"] .launch-badge span { color: var(--v4-cyan); font-size: .6rem; }
[data-version="v8"] .product-kicker { max-width: 720px; }
[data-version="v8"] .product-hero__grid { min-height: 760px; }
[data-version="v8"] .product-hero h1 { font-size: clamp(2.1rem, 3.35vw, 3.4rem); }

.product-position {
  position: relative;
  z-index: 4;
  margin-top: -34px;
}

.product-position__inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: center;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  border: 1px solid rgba(7, 90, 168, .18);
  border-radius: var(--radius-xl);
  background: #fff;
  box-shadow: 0 18px 45px rgba(7, 29, 59, .1);
}

.product-position__number {
  display: grid;
  width: 74px;
  height: 74px;
  place-items: center;
  border-radius: 50%;
  background: var(--v4-navy);
  color: #fff;
  font-size: 1.5rem;
  font-weight: 900;
}

.product-position h2 {
  margin: .25rem 0 .45rem;
  color: var(--v4-navy);
  font-size: clamp(1.25rem, 2vw, 1.8rem);
  line-height: 1.45;
}

.product-position p:last-child { margin: 0; color: var(--ink-soft); }

.target-category-grid,
.diagnostic-perspective-grid,
.service-feature-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.target-category-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.diagnostic-perspective-grid,
.service-feature-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.target-category-grid article,
.diagnostic-perspective-grid article,
.service-feature-grid article {
  min-width: 0;
  padding: clamp(1.25rem, 2vw, 1.75rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
}

.target-category-grid article > span,
.diagnostic-perspective-grid article > span,
.service-feature-grid article > span {
  display: inline-flex;
  margin-bottom: var(--space-4);
  color: var(--v4-blue);
  font-size: var(--text-sm);
  font-weight: 900;
}

.target-category-grid h3,
.diagnostic-perspective-grid h3,
.service-feature-grid h3 {
  margin: 0 0 var(--space-3);
  color: var(--v4-navy);
  font-size: clamp(1rem, 1.35vw, 1.15rem);
  line-height: 1.55;
}

.target-category-grid p,
.service-feature-grid p { margin: 0; color: var(--ink-soft); font-size: var(--text-sm); }
.section--perspectives { background: var(--v4-sky); }
.diagnostic-perspective-grid ul { margin: 0; padding-left: 1.15rem; color: var(--ink-soft); font-size: var(--text-sm); }
.diagnostic-perspective-grid li + li { margin-top: .45rem; }
.method-grid-v4 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.method-grid-v4 article { padding: clamp(1.5rem, 2vw, 2rem); }

[data-version="v8"] .diagnostic-matrix-shell {
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  border-radius: 22px;
}

.service-feature-grid article {
  position: relative;
  overflow: hidden;
  border-top: 4px solid var(--v4-cyan);
}

.partnership-section { padding-top: 0; background: #fff; }
.partnership-panel {
  display: grid;
  grid-template-columns: minmax(180px, .26fr) minmax(0, .74fr);
  overflow: hidden;
  padding: 0;
  border-radius: var(--radius-xl);
  background: var(--v4-navy);
  color: #fff;
}

.partnership-panel__label {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  justify-content: center;
  gap: .6rem;
  padding: clamp(2rem, 4vw, 3.5rem);
  background: #0d4478;
}

.partnership-panel__label span { color: #8ee4f0; font-size: var(--text-xs); font-weight: 900; letter-spacing: .14em; }
.partnership-panel__label strong { font-size: clamp(1.6rem, 3vw, 2.4rem); line-height: 1.2; }
.partnership-panel__body { padding: clamp(2rem, 4vw, 3.75rem); }
.partnership-panel__body .eyebrow { color: #8ee4f0; }
.partnership-panel__body h2 { max-width: 820px; margin: .35rem 0 var(--space-5); color: #fff; font-size: clamp(1.5rem, 2.5vw, 2.25rem); line-height: 1.45; }
.partnership-panel__body h2 .heading-line { display: block; }
.partnership-panel__body > p { color: #d3dfec; }

.competition-proof {
  margin-top: var(--space-6);
  padding: var(--space-5);
  border: 1px solid rgba(142, 228, 240, .3);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, .06);
}

.competition-proof small { display: block; margin-bottom: .45rem; color: #8ee4f0; font-weight: 900; letter-spacing: .1em; }
.competition-proof strong { display: block; color: #fff; line-height: 1.5; }
.competition-proof p { margin: .65rem 0 0; color: #d3dfec; font-size: var(--text-sm); }

.end-to-end-proof {
  display: grid;
  grid-template-columns: minmax(230px, .36fr) minmax(0, .64fr);
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: center;
  margin-top: var(--space-8);
  padding: clamp(1.5rem, 3vw, 2.4rem);
  border-radius: var(--radius-xl);
  background: var(--v4-navy);
  color: #fff;
}

.end-to-end-proof small { color: #8ee4f0; font-weight: 900; letter-spacing: .12em; }
.end-to-end-heading__unit { display: inline-block; }
.end-to-end-proof h3 { margin: .65rem 0 0; color: #fff; font-size: clamp(1.3rem, 2.2vw, 1.9rem); line-height: 1.45; }
.end-to-end-proof p { margin: 0; color: #e3edf6; }
.end-to-end-proof__note { margin-top: var(--space-4) !important; padding-top: var(--space-4); border-top: 1px solid rgba(142, 228, 240, .26); color: #bcd0e2 !important; font-size: var(--text-sm); }

@media (max-width: 1100px) {
  .diagnostic-perspective-grid,
  .service-feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 980px) {
  [data-version="v8"] .product-hero__grid { min-height: 0; }
  .target-category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .partnership-panel { grid-template-columns: 1fr; }
  .partnership-panel__label { min-height: auto; }
}

/* PC専用の改行: モバイルは自然折返しに任せる */
@media (max-width: 720px) {
  [data-version="v8"] br.pc-break { display: none; }
  [data-version="v8"] .section-lead .phrase { display: inline; }
}

@media (max-width: 720px) {
  [data-version="v8"] .launch-badge { font-size: .7rem; }
  [data-version="v8"] .product-hero h1 { font-size: clamp(1.5rem, 7vw, 1.75rem); letter-spacing: -.02em; }
  [data-version="v8"] .product-hero h1 .heading-line { display: block; white-space: nowrap; }
  .product-position { margin-top: -18px; }
  .product-position__inner { grid-template-columns: 1fr; }
  .product-position__number { width: 56px; height: 56px; font-size: 1.15rem; }
  .target-category-grid,
  .diagnostic-perspective-grid,
  .service-feature-grid,
  .method-grid-v4 { grid-template-columns: 1fr; }
  .partnership-panel__body h2 { font-size: 1.45rem; }
  .end-to-end-proof { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  [data-version="v8"] .product-hero__scan { display: none; }
}

/* V4 PROPOSAL OPTION 1 EXPANDED CANVAS */
[data-version="v8"] .product-hero--option1 {
  position: relative;
  overflow: hidden;
  padding: 0;
  background: #041629;
}

[data-version="v8"] .product-hero--option1::before { display: none; }

[data-version="v8"] .v4-option1-hero {
  width: 100%;
  min-height: 0;
  display: block;
  padding: 0;
}

[data-version="v8"] .v4-option1-hero__panel {
  position: relative;
  display: block;
  min-height: clamp(720px, calc(100svh - 100px), 900px);
  overflow: hidden;
  border: 0;
  background: #041629;
  box-shadow: none;
}

[data-version="v8"] .v4-option1-hero__copy {
  position: relative;
  z-index: 3;
  width: 58%;
  min-height: clamp(720px, calc(100svh - 100px), 900px);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: clamp(2rem, 3vw, 3rem) clamp(2rem, 4vw, 4.75rem) clamp(2rem, 3vw, 3rem) max(2rem, calc((100vw - 1680px) / 2 + 4rem));
  background: #0d2438;
  color: #f4f8fb;
}

[data-version="v8"] .v4-option1-hero__method-badge {
  width: fit-content;
  margin: clamp(1rem, 1.6vw, 1.5rem) 0 0;
  padding: .5rem .9rem;
  border: 1px solid rgba(89, 213, 255, .42);
  border-radius: 2px;
  background: rgba(89, 213, 255, .08);
  color: #b9eefe;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1.5;
}

[data-version="v8"] .product-hero--option1 .product-kicker {
  width: fit-content;
  margin-bottom: clamp(1.25rem, 2vw, 2rem);
  padding-left: 1rem;
  border-left: 4px solid #59d5ff;
  color: #75ddff;
  font-size: clamp(.8rem, 1vw, 1rem);
  letter-spacing: .05em;
}

[data-version="v8"] .product-hero--option1 h1 {
  max-width: 720px;
  margin: 0;
  color: #f4f8fb;
  font-size: clamp(3.25rem, 4vw, 3.75rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.045em;
}

[data-version="v8"] .product-hero--option1 h1 em {
  display: block;
  color: #59d5ff;
  font-style: normal;
}

[data-version="v8"] .product-hero--option1 h1 .heading-line {
  display: block;
  white-space: nowrap;
}

[data-version="v8"] .product-hero--option1 h1 .heading-subline {
  display: inline-block;
  white-space: nowrap;
}

[data-version="v8"] .product-hero--option1 .product-hero__lead {
  max-width: 690px;
  margin: clamp(1.25rem, 2vw, 2rem) 0;
  color: #c6d7e4;
  font-size: clamp(.92rem, 1.1vw, 1.08rem);
  line-height: 1.85;
}

[data-version="v8"] .v4-option1-hero__authority-rail {
  width: 100%;
  max-width: 720px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: .25rem;
  border-bottom: 1px solid rgba(89, 213, 255, .2);
  background: #021526;
}

[data-version="v8"] .v4-option1-hero__authority-rail > div {
  min-width: 0;
  min-height: 104px;
  padding: 1rem 1.15rem;
  border-top: 3px solid #59d5ff;
  border-bottom: 0;
}

[data-version="v8"] .v4-option1-hero__authority-rail > div + div { border-left: 1px solid rgba(89, 213, 255, .2); }
[data-version="v8"] .v4-option1-hero__authority-rail small {
  display: block;
  margin-bottom: .35rem;
  color: #75ddff;
  font-size: .75rem;
}

[data-version="v8"] .v4-option1-hero__authority-rail strong {
  display: block;
  color: #fff;
  font-size: 1rem;
  line-height: 1.45;
}

[data-version="v8"] .v4-option1-hero__authority-rail span {
  display: block;
  margin-top: .2rem;
  color: #9fb7c9;
  font-size: .75rem;
  line-height: 1.45;
}

[data-version="v8"] .v4-option1-hero__bottom {
  width: 100%;
  max-width: 720px;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(89, 213, 255, .2);
}

[data-version="v8"] .v4-option1-hero__actions { display: flex; flex: 0 0 auto; }

[data-version="v8"] .product-hero--option1 .btn {
  min-height: 64px;
  border-radius: 2px;
  padding: 1.1rem 2.75rem;
  font-size: 1rem;
}

[data-version="v8"] .product-hero--option1 .btn--primary {
  border-color: #c54800;
  background: #c54800;
  box-shadow: none;
}

[data-version="v8"] .v4-option1-hero__visual {
  position: absolute;
  z-index: 0;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: #041629;
}

[data-version="v8"] .v4-option1-hero__visual::before {
  position: absolute;
  z-index: 1;
  inset: 0;
  background: rgba(4, 22, 41, .3);
  content: "";
  pointer-events: none;
}

[data-version="v8"] .v4-option1-hero__visual .product-hero__media {
  position: absolute;
  top: 0;
  right: -3%;
  bottom: 0;
  left: auto;
  width: auto;
  min-width: 100%;
  max-width: none;
  height: 100%;
  object-fit: contain;
  object-position: right center;
  opacity: 1;
  filter: brightness(.6) saturate(1.15) contrast(1.06);
  transform: none;
}

[data-version="v8"] .v4-option1-hero__visual .product-hero__scan {
  z-index: 2;
  inset: 8% 4%;
}

[data-version="v8"] .v4-option1-hero__visual .product-hero__scan i {
  animation-duration: 4s;
  animation-delay: .25s;
}

@media (min-width: 1360px) {
  [data-version="v8"] .v4-option1-hero__copy { width: 54%; }
  [data-version="v8"] .v4-option1-hero__visual {
    background: linear-gradient(180deg, #9199a4 0%, #9ca5ac 10%, #a3acb5 35%, #a3abb3 60%, #97a3af 75%, #8e9eab 100%);
  }
  [data-version="v8"] .v4-option1-hero__visual .product-hero__media {
    right: auto;
    left: 74%;
    min-width: 0;
    transform: translateX(-68.78%);
  }
}

@media (min-width: 1800px) {
  [data-version="v8"] .v4-option1-hero__visual .product-hero__media {
    -webkit-mask-image: linear-gradient(90deg, #000 0%, #000 calc(100% - 128px), transparent 100%);
    mask-image: linear-gradient(90deg, #000 0%, #000 calc(100% - 128px), transparent 100%);
  }
}

@media (max-width: 1180px) {
  [data-version="v8"] .v4-option1-hero__copy { width: 56%; padding-inline: 2.25rem; }
}

@media (max-width: 980px) {
  [data-version="v8"] .v4-option1-hero__panel,
  [data-version="v8"] .v4-option1-hero__copy { min-height: 780px; }
  [data-version="v8"] .v4-option1-hero__copy { width: 62%; padding: 3rem 2rem; }
  [data-version="v8"] .product-hero--option1 h1 { font-size: clamp(2.4rem, 5vw, 3.25rem); }
}

@media (max-width: 820px) {
  [data-version="v8"] .v4-option1-hero__panel {
    min-height: 0;
    display: grid;
    grid-template-rows: auto auto;
  }
  [data-version="v8"] .v4-option1-hero__copy {
    width: 100%;
    min-height: 0;
    justify-content: flex-start;
    padding: 2rem 1.25rem 1.75rem;
    background: #0d2438;
  }
  [data-version="v8"] .product-hero--option1 h1 { font-size: clamp(1.75rem, 7.4vw, 2rem); line-height: 1.12; }
  [data-version="v8"] .product-hero--option1 h1 .heading-subline { white-space: normal; }
  [data-version="v8"] .product-hero--option1 .product-hero__lead { font-size: .94rem; line-height: 1.75; }
  [data-version="v8"] .v4-option1-hero__authority-rail { grid-template-columns: 1fr; }
  [data-version="v8"] .v4-option1-hero__authority-rail > div { min-height: 0; padding: .75rem .9rem; }
  [data-version="v8"] .v4-option1-hero__authority-rail > div + div { border-left: 0; }
  [data-version="v8"] .v4-option1-hero__bottom { align-items: stretch; flex-direction: column; gap: .8rem; margin-top: 1rem; padding-top: 1rem; }
  [data-version="v8"] .v4-option1-hero__actions,
  [data-version="v8"] .product-hero--option1 .btn { width: 100%; }
  [data-version="v8"] .v4-option1-hero__visual {
    position: relative;
    inset: auto;
    min-height: 0;
    aspect-ratio: 1672 / 941;
  }
  [data-version="v8"] .v4-option1-hero__visual .product-hero__media {
    inset: 0;
    width: 100%;
    height: 100%;
    object-position: right center;
  }
  [data-version="v8"] .v4-option1-hero__visual .product-hero__scan { inset: 8% 4%; height: auto; }
}

/* V4 PROPOSAL OPTION 1 FULL SYSTEM */
[data-version="v8"] {
  --v4-canvas: #041629;
  --v4-surface: #0d2438;
  --v4-surface-deep: #021526;
  --v4-surface-raised: #0a2c46;
  --v4-accent: #59d5ff;
  --v4-accent-soft: #75ddff;
  --v4-action: #c54800;
  --v4-text: #f4f8fb;
  --v4-text-soft: #c6d7e4;
  --v4-text-muted: #9fb7c9;
  --v4-line: rgba(89, 213, 255, .22);
  --v4-light: #f7fafc;
  --v4-soft: #eaf3f8;
  --v4-ink: #10263a;
  --v4-ink-soft: #53697b;
  --v4-light-line: #c9dbe6;
  --v4-accent-on-soft: #06708f;
  background: var(--v4-canvas);
  color: var(--v4-text);
}

body[data-version="v8"] {
  overflow-x: hidden;
  background: var(--v4-canvas);
  color: var(--v4-text);
}

[data-version="v8"] .container {
  width: min(calc(100% - 3rem), 1240px);
  max-width: 1240px;
}

[data-version="v8"] .site-header {
  border-bottom: 1px solid var(--v4-line);
  background: rgba(4, 22, 41, .86);
  box-shadow: 0 12px 30px rgba(2, 15, 29, .08);
  backdrop-filter: blur(18px) saturate(135%);
}

[data-version="v8"] .brand__logo {
  display: block;
  width: 58px;
  height: 44px;
  padding: 4px;
  border: 1px solid rgba(89, 213, 255, .34);
  border-radius: 2px;
  background: #fff;
  object-fit: contain;
}

[data-version="v8"] .service-logo-placeholder {
  display: grid;
  min-width: 88px;
  min-height: 44px;
  place-content: center;
  border: 1px dashed rgba(89, 213, 255, .72);
  background: rgba(89, 213, 255, .08);
  color: var(--v4-accent);
  font: 800 .62rem/1.15 var(--font-mono);
  letter-spacing: .08em;
  text-align: center;
}

[data-version="v8"] .service-logo-placeholder small {
  display: block;
  margin-top: .2rem;
  color: var(--v4-text-muted);
  font-size: .52rem;
  letter-spacing: .16em;
}

[data-version="v8"] .brand__text,
[data-version="v8"] .site-nav a { color: var(--v4-text); }
[data-version="v8"] .brand__text {
  overflow-wrap: break-word;
  word-break: auto-phrase;
  text-wrap: balance;
}
[data-version="v8"] .brand__text small { color: var(--v4-text-muted); }
[data-version="v8"] .site-nav a:not(.btn):hover { color: var(--v4-accent); }

[data-version="v8"] .btn--primary {
  border-color: var(--v4-action);
  border-radius: 2px;
  background: var(--v4-action);
  box-shadow: none;
}

[data-version="v8"] .btn {
  transition: transform 120ms ease-out, border-color 160ms ease-out, background-color 160ms ease-out, box-shadow 160ms ease-out;
}

[data-version="v8"] .btn__label { font-weight: 900; }

[data-version="v8"] .btn--primary:hover { border-color: #e05b0e; background: #e05b0e; box-shadow: 0 12px 30px rgba(197, 72, 0, .22); }
[data-version="v8"] .btn:active { transform: scale(.98); }

[data-version="v8"] :is(a, button, summary):focus-visible {
  outline: 3px solid var(--v4-accent);
  outline-offset: 3px;
}

[data-version="v8"] .section {
  position: relative;
  padding: clamp(5rem, 8vw, 8.5rem) 0;
  border-top: 1px solid rgba(89, 213, 255, .1);
  background: var(--v4-canvas);
  color: var(--v4-text);
}

[data-version="v8"] .section--muted,
[data-version="v8"] .section--perspectives { background: var(--v4-surface); }
[data-version="v8"] .section--navy { background: var(--v4-surface-deep); }
[data-version="v8"] .section--blue { background: var(--v4-surface-raised); }

[data-version="v8"] .eyebrow {
  color: var(--v4-accent);
  font-weight: 900;
  letter-spacing: .14em;
}

[data-version="v8"] .eyebrow::before { background: var(--v4-accent); }

[data-version="v8"] .section-title {
  max-width: 980px;
  color: var(--v4-text);
  font-size: clamp(2rem, 2.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -.04em;
}

[data-version="v8"] .section-lead {
  max-width: 900px;
  color: var(--v4-text-soft);
  line-height: 1.85;
}

[data-version="v8"] [data-chapter-start] {
  position: relative;
  overflow: hidden;
}

[data-version="v8"] .chapter-marker {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 3rem), 1380px);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: clamp(1rem, 2vw, 1.75rem);
  margin: 0 auto clamp(2.5rem, 4vw, 4rem);
  padding: 0 0 clamp(1rem, 1.8vw, 1.5rem);
  border-bottom: 1px solid rgba(15, 92, 124, .7);
}

[data-version="v8"] .chapter-marker__number {
  color: #087fa6;
  font: 800 clamp(3.25rem, 6vw, 5.5rem)/.8 var(--font-mono);
  letter-spacing: -.08em;
  pointer-events: none;
}

[data-version="v8"] .chapter-marker__body {
  min-width: 0;
  display: grid;
  gap: .18rem;
}

[data-version="v8"] .chapter-marker__phase {
  color: #087fa6;
  font: 800 clamp(.68rem, .9vw, .8rem)/1.3 var(--font-mono);
  letter-spacing: .08em;
}

[data-version="v8"] .chapter-marker__body strong {
  color: var(--v4-text);
  font-size: clamp(1.05rem, 1.5vw, 1.35rem);
  font-weight: 700;
  line-height: 1.25;
}

[data-version="v8"] .chapter-marker__body small {
  color: var(--v4-text-soft);
  font-size: clamp(.72rem, 1vw, .84rem);
  line-height: 1.4;
}

[data-version="v8"] .section-tone--dark > .chapter-marker { border-bottom-color: rgba(89, 213, 255, .55); }
[data-version="v8"] .section-tone--dark > .chapter-marker .chapter-marker__number,
[data-version="v8"] .section-tone--dark > .chapter-marker .chapter-marker__phase { color: var(--v4-accent); }

[data-version="v8"] [data-chapter-start] > .container { position: relative; z-index: 1; }

[data-version="v8"] .hero-title-separator {
  display: inline-block;
  font-size: .7em;
  margin-inline: .06em;
  font-style: normal;
  transform: translateY(-.04em);
}

[data-version="v8"] .service-boundary {
  border: 1px solid var(--v4-line);
  border-left: 4px solid var(--v4-accent);
  border-radius: 2px;
  background: rgba(2, 21, 38, .72);
  color: var(--v4-text-soft);
}

[data-version="v8"] .target-scope-note { max-width: 1040px; margin-top: 2rem; }

[data-version="v8"] .product-position {
  margin: 0;
  padding: clamp(2.25rem, 4vw, 4rem) 0;
  border-top: 1px solid var(--v4-line);
  border-bottom: 1px solid var(--v4-line);
  background: var(--v4-surface-deep);
}

[data-version="v8"] .product-position__inner {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

[data-version="v8"] .product-position__number {
  border: 1px solid rgba(89, 213, 255, .48);
  border-radius: 0;
  background: transparent;
  color: var(--v4-accent);
}

[data-version="v8"] .product-position h2 { color: var(--v4-text); }
[data-version="v8"] .product-position p:last-child { color: var(--v4-text-soft); }

[data-version="v8"] :is(
  .target-category-grid article,
  .diagnostic-perspective-grid article,
  .service-feature-grid article,
  .why-csc__grid article,
  .assessment-difference__card,
  .product-process__step
) {
  border: 1px solid var(--v4-line);
  border-radius: 2px;
  background: rgba(13, 36, 56, .84);
  box-shadow: none;
  color: var(--v4-text);
}

[data-version="v8"] :is(
  .target-category-grid article,
  .diagnostic-perspective-grid article,
  .service-feature-grid article,
  .why-csc__grid article
) { border-top: 3px solid var(--v4-accent); }

[data-version="v8"] :is(
  .target-category-grid article > span,
  .diagnostic-perspective-grid article > span,
  .service-feature-grid article > span,
  .why-csc__grid article > span
) { color: var(--v4-accent); }

[data-version="v8"] :is(
  .target-category-grid h3,
  .diagnostic-perspective-grid h3,
  .service-feature-grid h3,
  .why-csc__grid h3,
  .assessment-difference__card h3,
  .product-process__step h3
) { color: var(--v4-text); }

[data-version="v8"] :is(
  .target-category-grid p,
  .diagnostic-perspective-grid ul,
  .service-feature-grid p,
  .why-csc__grid p,
  .assessment-difference__card li,
  .product-process__step p
) { color: var(--v4-text-soft); }

[data-version="v8"] .assessment-difference__label { color: var(--v4-accent); }
[data-version="v8"] .assessment-difference__card.is-ai .assessment-difference__label { color: var(--v4-accent); }
[data-version="v8"] .assessment-difference__card.is-ai { background: #0a314d; }
[data-version="v8"] .assessment-difference__plus { color: var(--v4-accent); }

[data-version="v8"] .attack-path li {
  padding-inline: var(--space-5) var(--space-4);
  border-color: var(--v4-line);
  border-radius: 2px;
  background: rgba(13, 36, 56, .9);
  box-shadow: none;
}

/* 矢印と!マークの視覚軸を揃える（右端揃えだと字幅の狭い!が右に寄って見える） */
[data-version="v8"] .attack-path li::after {
  width: 1.6rem;
  text-align: center;
}

[data-version="v8"] .attack-path li > span,
[data-version="v8"] .attack-path small { color: var(--v4-accent); }
[data-version="v8"] .attack-path strong { color: var(--v4-text); }

[data-version="v8"] .architecture-map {
  border: 1px solid var(--v4-line);
  border-radius: 2px;
  background: #031b2e;
  box-shadow: none;
}

[data-version="v8"] .architecture-map__scope-head > div,
[data-version="v8"] .application-topology__route,
[data-version="v8"] .scope-node {
  border-color: var(--v4-line);
  border-radius: 2px;
  background: rgba(13, 36, 56, .9);
  box-shadow: none;
  color: var(--v4-text);
}

[data-version="v8"] .scope-node--core { border-color: rgba(89, 213, 255, .56); border-top: 4px solid var(--v4-accent); background: #0a314d; }
[data-version="v8"] .scope-node--contextual { border-style: dashed; border-color: rgba(141, 168, 192, .5); background: rgba(13, 36, 56, .55); }
[data-version="v8"] .application-topology__platform {
  border-left-width: 1px;
  border-left-style: dashed;
  border-left-color: rgba(141, 168, 192, .5);
}
[data-version="v8"] .scope-node small,
[data-version="v8"] .application-topology__route > span { color: var(--v4-accent); }
[data-version="v8"] .scope-node--contextual small { color: #a9bfd0; }

/* V5: PRIMARY／CONTEXTUALの色分け凡例（スウォッチをノード配色と一致させる） */
[data-version="v8"] .architecture-map__scope-head > div[data-scope-tier="primary"] { border-top: 3px solid var(--v4-accent); }
[data-version="v8"] .architecture-map__scope-head > div[data-scope-tier="contextual"] { border-top: 3px solid rgba(141, 168, 192, .8); }
[data-version="v8"] .architecture-map__scope-head small::before {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: .5rem;
  border-radius: 1px;
  vertical-align: -1px;
  content: "";
}
[data-version="v8"] .architecture-map__scope-head > div[data-scope-tier="primary"] small::before { background: var(--v4-accent); }
[data-version="v8"] .architecture-map__scope-head > div[data-scope-tier="contextual"] small::before { border: 1px dashed rgba(141, 168, 192, .8); background: transparent; }
[data-version="v8"] .architecture-map__scope-head > div[data-scope-tier="contextual"] small { color: #a9bfd0; }
[data-version="v8"] .scope-node strong,
[data-version="v8"] .application-topology__route p { color: var(--v4-text); }

[data-version="v8"] .application-topology__route:not(.application-topology__route--flow) > div {
  grid-template-columns: minmax(72px, .55fr) auto 1fr auto 1fr auto 1.25fr;
}

[data-version="v8"] .application-topology__origin {
  min-width: 0;
  color: var(--v4-accent);
  font: 800 .7rem/1.35 var(--font-mono);
  text-align: center;
}

[data-version="v8"] article.application-topology__origin {
  display: grid;
  min-height: 72px;
  place-content: center;
}

[data-version="v8"] .diagnostic-matrix-shell {
  border: 1px solid var(--v4-line);
  border-radius: 2px;
  background: var(--v4-surface-deep);
  box-shadow: none;
}

[data-version="v8"] .diagnostic-matrix { color: var(--v4-text); }
[data-version="v8"] .diagnostic-matrix caption { background: #021526; color: var(--v4-text); }
[data-version="v8"] .diagnostic-matrix caption span { color: var(--v4-text-muted); }
[data-version="v8"] .diagnostic-matrix th,
[data-version="v8"] .diagnostic-matrix td { border-color: var(--v4-line); background: rgba(13, 36, 56, .72); color: var(--v4-text-soft); }
[data-version="v8"] .diagnostic-matrix thead th { background: #082a46; color: var(--v4-text); }
[data-version="v8"] .diagnostic-matrix tbody th { color: var(--v4-text); }
[data-version="v8"] .diagnostic-matrix .is-primary { background: rgba(89, 213, 255, .18); color: var(--v4-accent); }
[data-version="v8"] .diagnostic-matrix .is-interface { color: #ff8a3d; }
[data-version="v8"] .diagnostic-matrix__legend { color: var(--v4-text-soft); }

[data-version="v8"] .report-preview {
  border: 1px solid var(--v4-line);
  border-radius: 2px;
  background: #031b2e;
  box-shadow: none;
}

[data-version="v8"] .report-preview__head { border-color: var(--v4-line); background: #021526; color: var(--v4-text); }
[data-version="v8"] .report-preview__score { background: #082a46; color: var(--v4-text); }
[data-version="v8"] .score-ring--report { background: #082a46; }
[data-version="v8"] .score-ring--report::after { background: #021526; color: var(--v4-accent); }
[data-version="v8"] .report-preview__head span,
[data-version="v8"] .finding > span:last-child { color: var(--v4-text-muted); }
[data-version="v8"] .finding { border-color: var(--v4-line); background: rgba(13, 36, 56, .86); }
[data-version="v8"] .finding strong { color: var(--v4-text); }

[data-version="v8"] .why-csc { background: var(--v4-surface); }
[data-version="v8"] .service-feature-grid article { overflow: visible; }
[data-version="v8"] #features .v8-features-title .phrase {
  display: inline-block;
  max-width: 100%;
}

[data-version="v8"] .v8-features-intro {
  display: grid;
  gap: 0;
  max-width: 62rem;
  margin-top: 1.25rem;
  color: rgba(255, 255, 255, .8);
  line-height: 1.85;
}

[data-version="v8"] .v8-features-intro p { margin: 0; }

[data-version="v8"] #features .v8-feature-card-title span {
  display: inline-block;
  max-width: 100%;
}

[data-version="v8"] .partnership-section {
  padding: clamp(5rem, 8vw, 8.5rem) 0;
  border-top: 1px solid rgba(89, 213, 255, .1);
  background: var(--v4-canvas);
}

[data-version="v8"] .partnership-panel {
  border: 1px solid var(--v4-line);
  border-radius: 2px;
  background: var(--v4-surface);
}

[data-version="v8"] .partnership-panel__label { background: #082a46; }
[data-version="v8"] .partnership-panel__label span,
[data-version="v8"] .partnership-panel__body .eyebrow,
[data-version="v8"] .competition-proof small { color: var(--v4-accent); }
[data-version="v8"] .partnership-panel__body h2,
[data-version="v8"] .competition-proof strong { color: var(--v4-text); }
[data-version="v8"] .partnership-panel__body > p,
[data-version="v8"] .competition-proof p { color: var(--v4-text-soft); }
[data-version="v8"] .competition-proof { border-color: var(--v4-line); border-radius: 2px; background: #021526; }

[data-version="v8"] .product-process__step::before { background: var(--v4-accent); color: #021526; }

[data-version="v8"] .end-to-end-proof {
  border: 1px solid var(--v4-line);
  border-radius: 2px;
  background: var(--v4-surface-deep);
}

[data-version="v8"] .end-to-end-proof small { color: var(--v4-accent); }
[data-version="v8"] .end-to-end-proof h3 { color: var(--v4-text); }
[data-version="v8"] .end-to-end-proof p { color: var(--v4-text-soft); }

[data-version="v8"] .support-journey {
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  border: 1px solid var(--v4-line);
  border-radius: 2px;
  background: #031b2e;
  box-shadow: none;
}

[data-version="v8"] .support-journey__group {
  border-color: var(--v4-line);
  background: var(--v4-surface-deep);
}

[data-version="v8"] .support-journey__group article {
  border-color: var(--v4-line);
  border-radius: 2px;
  background: var(--v4-surface);
  color: var(--v4-text);
}

[data-version="v8"] .support-journey__group article small,
[data-version="v8"] .support-journey__group > span { color: var(--v4-accent); }
[data-version="v8"] .support-journey__group > span { border-radius: 2px; background: #082a46; }
[data-version="v8"] .support-journey__group i { color: var(--v4-accent); }
[data-version="v8"] .support-journey__group h3 { color: var(--v4-text); }
[data-version="v8"] .support-journey__divider { border-color: #ff8a3d; color: #ffb37e; }
[data-version="v8"] .support-journey__divider strong { color: #ffb37e; }
[data-version="v8"] .support-journey__divider span { color: var(--v4-text-soft); }

@media (max-width: 1180px) {
  [data-version="v8"] .support-journey { grid-template-columns: 1fr; }
  [data-version="v8"] .site-nav {
    position: absolute;
    inset: 100% 0 auto;
    display: none;
    align-items: stretch;
    flex-direction: column;
    padding: var(--space-6);
    background: #041629;
    box-shadow: var(--shadow-lg);
  }
  [data-version="v8"] .site-nav.is-open { display: flex; }
  [data-version="v8"] .mobile-nav-button {
    width: 44px;
    height: 44px;
    display: inline-grid;
    place-items: center;
    color: var(--v4-text);
  }
}

[data-version="v8"] .faq {
  max-width: 1020px;
  margin: 2.5rem auto 0;
  border-top: 0;
}

[data-version="v8"] .faq details {
  overflow: hidden;
  border: 1px solid var(--v4-light-line);
  border-left: 1px solid var(--v4-light-line);
  border-radius: 4px;
  background: #fff;
  transition: border-color 160ms ease-out, box-shadow 160ms ease-out;
}

[data-version="v8"] .faq details + details { margin-top: .75rem; }
[data-version="v8"] .faq details:hover { border-color: #8fc9dc; }
[data-version="v8"] .faq details[open] { border-color: #0a95bd; box-shadow: 0 16px 38px rgba(16, 38, 58, .08); }

[data-version="v8"] .faq summary {
  min-height: 72px;
  align-items: center;
  padding: 1rem 1.5rem;
  color: var(--v4-ink);
  font-size: 1rem;
  line-height: 1.55;
}

[data-version="v8"] .faq summary::after {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--v4-light-line);
  border-radius: 50%;
  color: #08799f;
  font-size: 1.2rem;
  transition: transform 180ms ease-out, border-color 160ms ease-out, background-color 160ms ease-out;
}

[data-version="v8"] .faq details[open] summary::after { transform: rotate(45deg); border-color: #0a95bd; background: #e5f5fa; }
[data-version="v8"] .faq details[open] summary { color: #075f7c; }
[data-version="v8"] .faq details p { max-width: 820px; margin: 0; padding: 0 4.75rem 1.5rem 1.5rem; color: var(--v4-ink-soft); line-height: 1.8; }

[data-version="v8"] .product-cta {
  padding: clamp(3.5rem, 6vw, 6rem) 0;
  border-top: 1px solid var(--v4-line);
  background: #021526;
}

[data-version="v8"] .product-cta__inner {
  width: min(calc(100% - 3rem), 1120px);
  max-width: 1120px;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .55fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  padding: clamp(2.5rem, 4vw, 4rem);
  border: 1px solid var(--v4-line);
  border-radius: 2px;
  background: var(--v4-surface);
  box-shadow: 0 30px 80px rgba(2, 15, 29, .24);
}

[data-version="v8"] .product-cta h2 { margin: .5rem 0 0; color: var(--v4-text); font-size: clamp(2rem, 3vw, 2.75rem); font-weight: 750; line-height: 1.25; letter-spacing: -.035em; }
[data-version="v8"] .product-cta p { color: var(--v4-text-soft); }
[data-version="v8"] .product-cta__inner > .btn { width: 100%; max-width: 360px; justify-self: end; }

[data-version="v8"] .contextual-cta {
  border-block: 1px solid var(--v4-line);
  background: #082a46;
  color: var(--v4-text);
}

[data-version="v8"] .contextual-cta__inner {
  min-height: 132px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 1.75rem;
}

[data-version="v8"] .contextual-cta__inner div { display: grid; gap: .5rem; }
[data-version="v8"] .contextual-cta__inner small { color: var(--v4-accent); font-weight: 900; letter-spacing: .12em; }
[data-version="v8"] .contextual-cta__inner strong { font-size: clamp(1.05rem, 1.8vw, 1.4rem); line-height: 1.5; }

[data-version="v8"] .mobile-sticky-cta { display: none; }

[data-version="v8"] .site-footer {
  border-top: 1px solid var(--v4-line);
  background: #020f1d;
  color: #b9cbd9;
}

[data-version="v8"] .mobile-sticky-cta {
  transition: opacity 160ms ease-out, transform 180ms ease-out;
}

[data-version="v8"] .mobile-sticky-cta.is-hidden {
  opacity: 0;
  transform: translateY(100%);
  pointer-events: none;
}

@media (max-width: 980px) {
  [data-version="v8"] .container { width: min(calc(100% - 2rem), 1240px); }
  [data-version="v8"] .target-category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  [data-version="v8"] .diagnostic-perspective-grid,
  [data-version="v8"] .service-feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  body[data-version="v8"] { padding-bottom: calc(76px + env(safe-area-inset-bottom)); }
  [data-version="v8"] .container { width: min(calc(100% - 1.5rem), 1240px); }
  [data-version="v8"] .site-header__inner { min-height: 64px; gap: .75rem; }
  [data-version="v8"] .mobile-nav-button { width: 44px; height: 44px; place-items: center; color: var(--v4-text); }
  [data-version="v8"] .section,
  [data-version="v8"] .partnership-section { padding: 4.5rem 0; }
  [data-version="v8"] .section-title { font-size: clamp(1.8rem, 8.5vw, 2.7rem); }
  [data-version="v8"] .section-title .phrase {
    display: inline-block;
    max-width: 100%;
  }
  [data-version="v8"] .product-hero--option1 h1 .heading-line { white-space: normal; }
  [data-version="v8"] .product-position__inner { grid-template-columns: 1fr; }
  [data-version="v8"] .target-category-grid,
  [data-version="v8"] .diagnostic-perspective-grid,
  [data-version="v8"] .service-feature-grid,
  [data-version="v8"] .method-grid-v4 { grid-template-columns: 1fr; }
  [data-version="v8"] .partnership-panel { grid-template-columns: 1fr; }
  [data-version="v8"] .product-cta__inner {
    grid-template-columns: 1fr;
    align-items: stretch;
    gap: 1.5rem;
    padding: 1.5rem;
  }
  [data-version="v8"] .product-cta__inner > .btn {
    width: 100%;
    max-width: none;
    min-height: 52px;
    justify-self: stretch;
  }
  [data-version="v8"] .contextual-cta__inner { min-height: 0; align-items: stretch; flex-direction: column; gap: 1.25rem; padding-block: 1.5rem; }
  [data-version="v8"] .contextual-cta .btn { width: 100%; }
  [data-version="v8"] .mobile-sticky-cta {
    position: fixed;
    z-index: 20;
    right: 0;
    bottom: 0;
    left: 0;
    display: block;
    padding: .75rem max(.75rem, env(safe-area-inset-right)) calc(.75rem + env(safe-area-inset-bottom)) max(.75rem, env(safe-area-inset-left));
    border-top: 1px solid rgba(89, 213, 255, .28);
    background: rgba(2, 15, 29, .92);
    backdrop-filter: blur(18px) saturate(135%);
  }
  [data-version="v8"] .mobile-sticky-cta .btn { width: 100%; min-height: 48px; }
  [data-version="v8"] .diagnostic-matrix-shell { overflow: visible; border: 0; background: transparent; }
  [data-version="v8"] .diagnostic-matrix--layers { min-width: 0; display: block; }
  [data-version="v8"] .diagnostic-matrix--layers caption { display: block; border: 1px solid var(--v4-light-line); }
  [data-version="v8"] .diagnostic-matrix--layers thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }
  [data-version="v8"] .diagnostic-matrix--layers tbody { display: grid; gap: 1rem; margin-top: 1rem; }
  [data-version="v8"] .diagnostic-matrix--layers tbody tr {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    overflow: hidden;
    border: 1px solid var(--v4-light-line);
    background: #fff;
  }
  [data-version="v8"] .diagnostic-matrix--layers tbody th {
    position: static;
    grid-column: 1 / -1;
    width: auto;
    padding: 1rem;
    border-right: 0;
    background: #10263a;
  }
  [data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix--layers tbody th :is(strong, small) { color: #fff; }
  [data-version="v8"] .diagnostic-matrix--layers tbody td {
    width: auto;
    min-height: 64px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .25rem;
    padding: .65rem .35rem;
    border-right: 1px solid var(--v4-light-line);
    text-align: center;
  }
  [data-version="v8"] .diagnostic-matrix--layers tbody td::before {
    display: block;
    width: 100%;
    color: var(--v4-ink-soft);
    font-size: .68rem;
    font-weight: 700;
    line-height: 1.25;
    text-align: center;
  }
  [data-version="v8"] .diagnostic-matrix--layers tbody td:nth-child(2)::before { content: "Web"; }
  [data-version="v8"] .diagnostic-matrix--layers tbody td:nth-child(3)::before { content: "API・認証"; }
  [data-version="v8"] .diagnostic-matrix--layers tbody td:nth-child(4)::before { content: "AI制御"; }
  [data-version="v8"] .diagnostic-matrix--layers tbody td:nth-child(5)::before { content: "LLM"; }
  [data-version="v8"] .diagnostic-matrix--layers tbody td:nth-child(6)::before { content: "RAG・DB"; }
  [data-version="v8"] .diagnostic-matrix--layers tbody td:nth-child(7)::before { content: "AI Agent"; }
  [data-version="v8"] .diagnostic-matrix--layers tbody td:nth-child(8)::before { content: "MCP"; }
  [data-version="v8"] .diagnostic-matrix--layers tbody td:nth-child(9)::before { content: "外部API"; }
  [data-version="v8"] .diagnostic-matrix--layers tbody td:nth-child(10)::before { content: "データ・クラウド"; }
  [data-version="v8"] .diagnostic-matrix--layers tbody td:empty::after { color: #8ba0ae; content: "—"; }
  [data-version="v8"] .support-journey__group > div {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .75rem;
  }
  [data-version="v8"] .support-journey__group i { display: none; }
  [data-version="v8"] .support-journey__group article { min-height: 96px; }
}

/* Keep every matrix row inside the proposal option 1 dark canvas. */
[data-version="v8"] .diagnostic-matrix tbody tr:nth-child(even) th,
[data-version="v8"] .diagnostic-matrix tbody tr:nth-child(even) td {
  background: rgba(13, 36, 56, .88);
  color: var(--v4-text-soft);
}

[data-version="v8"] .diagnostic-matrix tbody th strong { color: var(--v4-text); }
[data-version="v8"] .diagnostic-matrix tbody th span { color: var(--v4-accent); }
[data-version="v8"] .diagnostic-matrix tbody th small { color: var(--v4-text-muted); }
[data-version="v8"] .diagnostic-matrix tbody tr { background: var(--v4-surface-deep); }
[data-version="v8"] .diagnostic-matrix tbody .is-primary {
  background: rgba(89, 213, 255, .18);
  color: var(--v4-accent);
}
[data-version="v8"] .diagnostic-matrix tbody tr:nth-child(even) .is-primary {
  background: rgba(89, 213, 255, .18);
  color: var(--v4-accent);
}
[data-version="v8"] .diagnostic-matrix tbody .is-interface { color: #ff8a3d; }

[data-version="v8"] .section-tone--light {
  background: var(--v4-light);
  color: var(--v4-ink);
}

[data-version="v8"] .section-tone--soft {
  background: var(--v4-soft);
  color: var(--v4-ink);
}

[data-version="v8"] .section-tone--dark {
  background: var(--v4-canvas);
  color: var(--v4-text);
}

[data-version="v8"] :is(.section-tone--light, .section-tone--soft) {
  border-top-color: var(--v4-light-line);
}

[data-version="v8"] :is(.section-tone--light, .section-tone--soft) .eyebrow {
  color: #08799f;
}

[data-version="v8"] .section-tone--soft .eyebrow {
  color: var(--v4-accent-on-soft);
}

[data-version="v8"] :is(.section-tone--light, .section-tone--soft) :is(.section-title, h2) {
  color: var(--v4-ink);
}

[data-version="v8"] :is(.section-tone--light, .section-tone--soft) .chapter-marker__body strong {
  color: var(--v4-ink);
}

[data-version="v8"] :is(.section-tone--light, .section-tone--soft) .chapter-marker__body small {
  color: var(--v4-ink-soft);
}

[data-version="v8"] :is(.section-tone--light, .section-tone--soft) .chapter-marker__phase {
  color: #067090;
}

[data-version="v8"] :is(.section-tone--light, .section-tone--soft) :is(.section-lead, p) {
  color: var(--v4-ink-soft);
}

[data-version="v8"] :is(.section-tone--light, .section-tone--soft) .service-boundary {
  border-color: var(--v4-light-line);
  border-left-color: #08799f;
  background: #fff;
  color: #3d586d;
}

[data-version="v8"] :is(.section-tone--light, .section-tone--soft) :is(
  .target-category-grid article,
  .diagnostic-perspective-grid article,
  .why-csc__grid article,
  .assessment-difference__card,
  .product-process__step,
  .faq details
) {
  border-color: var(--v4-light-line);
  border-top-color: #0a95bd;
  background: #fff;
  color: var(--v4-ink);
}

[data-version="v8"] :is(.section-tone--light, .section-tone--soft) :is(
  .target-category-grid h3,
  .diagnostic-perspective-grid h3,
  .why-csc__grid h3,
  .assessment-difference__card h3,
  .product-process__step h3,
  .faq summary
) {
  color: var(--v4-ink);
}

[data-version="v8"] :is(.section-tone--light, .section-tone--soft) :is(
  .target-category-grid p,
  .diagnostic-perspective-grid ul,
  .why-csc__grid p,
  .assessment-difference__card li,
  .product-process__step p,
  .faq details p
) {
  color: var(--v4-ink-soft);
}

[data-version="v8"] :is(.section-tone--light, .section-tone--soft) :is(
  .target-category-grid article > span,
  .diagnostic-perspective-grid article > span,
  .why-csc__grid article > span,
  .assessment-difference__label
) {
  color: #08799f;
}

[data-version="v8"] .section-tone--soft :is(
  .target-category-grid article > span,
  .diagnostic-perspective-grid article > span,
  .why-csc__grid article > span,
  .assessment-difference__label
) {
  color: var(--v4-accent-on-soft);
}

[data-version="v8"] .product-position.section-tone--light {
  border-color: var(--v4-light-line);
  background: var(--v4-light);
}

[data-version="v8"] .product-position.section-tone--light .product-position__number {
  border-color: #0a95bd;
  color: #08799f;
}

[data-version="v8"] .product-position.section-tone--light h2 { color: var(--v4-ink); }
[data-version="v8"] .product-position.section-tone--light p:last-child { color: var(--v4-ink-soft); }

[data-version="v8"] #attack-path.section-tone--light .attack-path li {
  border-color: var(--v4-light-line);
  background: #fff;
}

[data-version="v8"] #attack-path.section-tone--light .attack-path :is(li > span, small) { color: #08799f; }
[data-version="v8"] #attack-path.section-tone--light .attack-path strong { color: var(--v4-ink); }

[data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix-shell {
  border-color: var(--v4-light-line);
  background: #fff;
}

[data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix caption {
  padding: clamp(1.25rem, 2vw, 1.75rem) clamp(1.25rem, 2.5vw, 2rem);
  background: #10263a;
  color: #fff;
}

[data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix caption span { color: #c7d9e5; }
[data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix thead th { background: #dbeaf2; color: var(--v4-ink); }
[data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix tbody tr { background: #fff; }
[data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix :is(th, td),
[data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix tbody tr:nth-child(even) :is(th, td) {
  border-color: var(--v4-light-line);
  background: #fff;
  color: var(--v4-ink-soft);
}

[data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix tbody tr:nth-child(even) :is(th, td) { background: #f0f6f9; }
[data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix tbody th strong { color: var(--v4-ink); }
[data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix tbody th span { color: #08799f; }
[data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix tbody th small { color: var(--v4-ink-soft); }
[data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix tbody .is-primary,
[data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix tbody tr:nth-child(even) .is-primary {
  background: #ccebf4;
  color: #056c8c;
}

[data-version="v8"] #diagnostic-items.section-tone--light .diagnostic-matrix__legend { color: var(--v4-ink-soft); }

[data-version="v8"] #deliverables.section-tone--light .report-preview {
  border-color: #173d5d;
  background: #082239;
}

[data-version="v8"] #deliverables .deliverables-layout {
  width: auto;
  max-width: none;
  margin-left: max(1.5rem, calc((100% - 1240px) / 2));
  margin-right: max(1.5rem, calc((100% - 1400px) / 2));
  grid-template-columns: minmax(360px, .78fr) minmax(0, 1.22fr);
  gap: clamp(3rem, 5vw, 4.5rem);
  align-items: center;
}

[data-version="v8"] #deliverables .section-title .phrase {
  word-break: auto-phrase;
  text-wrap: pretty;
}

[data-version="v8"] #deliverables .deliverables-title > span {
  display: inline;
}

[data-version="v8"] .report-creative {
  overflow: hidden;
  align-self: center;
  margin: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

[data-version="v8"] .report-creative img {
  display: block;
  width: 100%;
  height: auto;
}

[data-version="v8"] #process.section-tone--light .product-process__step::before {
  padding: .35rem .75rem;
  background: #0a95bd;
  color: #fff;
  line-height: 1.2;
}

@media (max-width: 980px) {
  [data-version="v8"] .brand__text { max-width: 220px; }
  [data-version="v8"] #deliverables .deliverables-layout {
    width: min(calc(100% - 2rem), 900px);
    max-width: 900px;
    margin-inline: auto;
    grid-template-columns: 1fr;
    gap: clamp(2.5rem, 6vw, 4rem);
  }
  [data-version="v8"] #deliverables .report-creative {
    width: min(100%, 860px);
    justify-self: center;
  }
}

@media (max-width: 720px) {
  [data-version="v8"] .chapter-marker {
    width: min(calc(100% - 1.5rem), 1380px);
    gap: .85rem;
    margin-bottom: 2.5rem;
  }
  [data-version="v8"] .chapter-marker__body strong { font-size: 1rem; }
  [data-version="v8"] .chapter-marker__body small { font-size: .7rem; }
  [data-version="v8"] .service-logo-placeholder { min-width: 72px; min-height: 38px; }
  [data-version="v8"] .application-topology__route:not(.application-topology__route--flow) > div { grid-template-columns: 1fr; }
  [data-version="v8"] .application-topology__origin { min-height: 56px; display: grid; place-content: center; }
  [data-version="v8"] .brand__logo { width: 48px; height: 38px; }
  [data-version="v8"] .brand__text { max-width: 185px; font-size: .74rem; }
  [data-version="v8"] #deliverables .deliverables-layout {
    width: min(calc(100% - 1.5rem), 900px);
    gap: 2rem;
  }
  [data-version="v8"] #deliverables .deliverables-title > span {
    display: block;
    white-space: nowrap;
  }
  [data-version="v8"] .product-cta__inner--form {
    grid-template-columns: minmax(0, 1fr);
  }
  [data-version="v8"] .product-cta__inner--form > * {
    min-width: 0;
  }
  [data-version="v8"] #contact .v8-contact-title .phrase {
    word-break: auto-phrase;
    overflow-wrap: anywhere;
  }
}

@media (hover: hover) and (pointer: fine) {
  [data-version="v8"] :is(
    .target-category-grid article,
    .diagnostic-perspective-grid article,
    .service-feature-grid article,
    .why-csc__grid article
  ) {
    transition: transform 180ms ease-out, border-color 180ms ease-out, box-shadow 180ms ease-out;
  }

  [data-version="v8"] :is(
    .target-category-grid article,
    .diagnostic-perspective-grid article,
    .service-feature-grid article,
    .why-csc__grid article
  ):hover {
    transform: translateY(-2px);
    border-color: rgba(89, 213, 255, .52);
    box-shadow: 0 18px 42px rgba(2, 15, 29, .1);
  }
}

@media (prefers-reduced-motion: reduce) {
  [data-version="v8"] :is(.btn, .faq details, .faq summary::after, .mobile-sticky-cta) { transition: none; }
  [data-version="v8"] .btn:active,
  [data-version="v8"] .faq details[open] summary::after,
  [data-version="v8"] .mobile-sticky-cta.is-hidden { transform: none; }
}

@media (prefers-reduced-transparency: reduce) {
  [data-version="v8"] .site-header,
  [data-version="v8"] .mobile-sticky-cta { background: #041629; backdrop-filter: none; }
}

/* ---- お問い合わせフォーム (V4) ---- */
[data-version="v8"] .product-cta__inner--form {
  grid-template-columns: minmax(0, .85fr) minmax(340px, 1fr);
  align-items: start;
}

/* フォーム併設時は左カラムが狭く、既定サイズだと語中で折り返すため一段縮める */
[data-version="v8"] .product-cta__inner--form h2 {
  font-size: clamp(1.35rem, 1.8vw, 1.85rem);
  line-height: 1.5;
}

[data-version="v8"] #contact .v8-contact-title .phrase {
  display: block;
  max-width: 100%;
  word-break: keep-all;
  overflow-wrap: normal;
}

[data-version="v8"] .contact-form[hidden] { display: none; }

[data-version="v8"] .contact-form { display: grid; gap: 1rem; }

[data-version="v8"] .contact-form__grid { display: grid; grid-template-columns: 1fr; gap: 1rem; }

[data-version="v8"] .contact-form__field { display: grid; gap: .4rem; }

[data-version="v8"] .contact-form__field label {
  color: var(--v4-text-soft);
  font-size: var(--text-sm);
  font-weight: 700;
}

[data-version="v8"] .contact-form__required {
  display: inline-block;
  margin-left: .35em;
  padding: .1em .5em;
  border-radius: 2px;
  background: var(--v4-action);
  color: #fff;
  font-size: .72em;
  font-weight: 700;
  vertical-align: .1em;
}

[data-version="v8"] .contact-form input:not([type="checkbox"]),
[data-version="v8"] .contact-form textarea {
  width: 100%;
  padding: .7rem .8rem;
  border: 1px solid var(--v4-line);
  border-radius: 2px;
  background: var(--v4-surface-deep);
  color: var(--v4-text);
  font: inherit;
}

[data-version="v8"] .contact-form :is(input, textarea):focus-visible {
  outline: 3px solid var(--v4-accent);
  outline-offset: 2px;
}

[data-version="v8"] .contact-form textarea { resize: vertical; min-height: 8.5rem; }

/* honeypot: display:none を避けた視覚的非表示（bot には通常フィールドに見せる） */
[data-version="v8"] .contact-form__hp {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

[data-version="v8"] .contact-form__consent {
  display: flex;
  align-items: center;
  gap: .55rem;
  color: var(--v4-text-soft);
  font-size: var(--text-sm);
}

[data-version="v8"] .contact-form__consent input {
  width: 1.15rem;
  height: 1.15rem;
  accent-color: var(--v4-accent);
}

[data-version="v8"] .contact-form__consent a { color: var(--v4-accent); }

[data-version="v8"] .contact-form__submit { width: 100%; min-height: 52px; }

[data-version="v8"] .contact-form__status {
  margin: 0;
  min-height: 1.4em;
  color: #ffb3a6;
  font-size: var(--text-sm);
}

[data-version="v8"] .contact-form__success {
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border: 1px solid var(--v4-line);
  border-radius: 2px;
  background: var(--v4-surface-raised);
}

[data-version="v8"] .contact-form__success h3 { margin: 0 0 .5rem; color: var(--v4-text); }

[data-version="v8"] .contact-form__success p { margin: 0; color: var(--v4-text-soft); }

@media (max-width: 980px) {
  [data-version="v8"] .product-cta__inner--form { grid-template-columns: 1fr; }
}



/* EFO: 入力欄は1カラム・任意バッジ・インラインエラー */
[data-version="v8"] .contact-form__optional {
  display: inline-block;
  margin-left: .35em;
  padding: .1em .5em;
  border: 1px solid var(--v4-line);
  border-radius: 2px;
  color: var(--v4-text-muted);
  font-size: .72em;
  font-weight: 700;
  vertical-align: .1em;
}

[data-version="v8"] .contact-form__error[hidden] { display: none; }

[data-version="v8"] .contact-form__error {
  display: flex;
  align-items: baseline;
  gap: .45em;
  margin: 0;
  color: #ff9d85;
  font-size: var(--text-sm);
  font-weight: 700;
}

/* 色だけに頼らないエラー表示（WCAG 1.4.1）: !アイコンを併用 */
[data-version="v8"] .contact-form__error::before {
  content: "!" / "";
  flex: none;
  display: inline-grid;
  place-items: center;
  align-self: center;
  width: 1.15em;
  height: 1.15em;
  border-radius: 50%;
  background: #ff6b4a;
  color: #04121f;
  font-size: .85em;
  font-weight: 900;
  line-height: 1;
}

[data-version="v8"] .contact-form :is(input, textarea)[aria-invalid="true"] {
  border-color: #ff8a70;
  box-shadow: 0 0 0 1px #ff8a70;
}

/* フォーム基本レイアウトより後で、狭幅時の340px最小列を確実に解除する */
@media (max-width: 720px) {
  [data-version="v8"] .product-cta__inner--form {
    grid-template-columns: minmax(0, 1fr);
  }
  [data-version="v8"] .product-cta__inner--form > * {
    min-width: 0;
  }
  [data-version="v8"] #contact .v8-contact-title .phrase {
    word-break: auto-phrase;
    overflow-wrap: anywhere;
  }
}

/* V8: 西澤さん最終フィードバックの表示契約 */
[data-version="v8"] .v8-hero-summary {
  max-width: 44rem;
  margin: 1.1rem 0 0;
  color: #dce8f1;
  line-height: 1.75;
}

[data-version="v8"] .v4-option1-hero__visual {
  --v8-hero-media-width: 42%;
  background: #eff2f7;
}

[data-version="v8"] .v4-option1-hero__visual::before {
  z-index: 1;
  display: none;
  background: none;
}

[data-version="v8"] .v4-option1-hero__visual .product-hero__media {
  top: 50%;
  right: 0;
  bottom: auto;
  left: auto;
  width: var(--v8-hero-media-width);
  min-width: 0;
  max-width: none;
  height: auto;
  max-height: 100%;
  aspect-ratio: 3 / 2;
  object-fit: contain;
  object-position: center;
  opacity: 1;
  filter: none;
  transform: translateY(-50%);
  -webkit-mask-image: none;
  mask-image: none;
}

[data-version="v8"] .v6-hero-proofs > div {
  min-height: 10rem;
  padding: 1.25rem 1.35rem;
}

[data-version="v8"] .v6-hero-proofs strong {
  top: 1.1rem;
  right: 1.35rem;
  left: 1.35rem;
  font-size: clamp(.92rem, 1.15vw, 1.05rem);
}

[data-version="v8"] .v6-hero-proofs span {
  margin-top: 1.35rem;
  font-size: clamp(1.2rem, 1.6vw, 1.5rem);
  font-weight: 800;
  line-height: 1.42;
  white-space: normal;
}

[data-version="v8"] .v6-hero-proofs .v8-proof-phrase {
  display: inline-block;
  width: auto;
  margin: 0;
  color: inherit;
  font-size: 1em;
  font-weight: inherit;
  line-height: inherit;
}

[data-version="v8"] .v6-hero-proofs > div:nth-of-type(2) span {
  font-size: clamp(1rem, 1.35vw, 1.25rem);
}

[data-version="v8"] .v6-hero-proofs > div:first-child span {
  font-size: clamp(1.1rem, 1.35vw, 1.3rem);
}

@media (min-width: 1360px) {
  [data-version="v8"] .v4-option1-hero__visual { --v8-hero-media-width: 46%; }
}

@media (min-width: 981px) and (max-width: 1180px) {
  [data-version="v8"] .v4-option1-hero__visual { --v8-hero-media-width: 44%; }
}

@media (min-width: 821px) and (max-width: 980px) {
  [data-version="v8"] .v4-option1-hero__visual { --v8-hero-media-width: 38%; }
}

[data-version="v8"] .v8-attack-flow-intro {
  max-width: 62rem;
  margin: 2.25rem 0 0;
  color: #4f6575;
  font-weight: 700;
  line-height: 1.85;
}

[data-version="v8"] #process .product-process {
  --v8-process-gap: 1rem;
  --v8-process-arrow-size: 20px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--v8-process-gap);
}

[data-version="v8"] #process .product-process__step,
[data-version="v8"] #process .product-process__step:last-child {
  min-height: 13rem;
  border: 1px solid var(--v4-line);
}

[data-version="v8"] #process .product-process__step:not(:last-child)::after {
  right: calc(-1 * var(--v8-process-gap) / 2 - var(--v8-process-arrow-size) / 2 - 1px);
  width: var(--v8-process-arrow-size);
  height: var(--v8-process-arrow-size);
  border-color: var(--v4-accent);
}

@media (max-width: 980px) {
  [data-version="v8"] #process .product-process { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  [data-version="v8"] .v4-option1-hero__visual {
    aspect-ratio: 3 / 2;
    background: #eff2f7;
  }

  [data-version="v8"] .v4-option1-hero__visual::before { display: none; }

  [data-version="v8"] .v4-option1-hero__visual .product-hero__media {
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    max-height: none;
    aspect-ratio: auto;
    object-fit: contain;
    object-position: center;
    transform: none;
  }

  [data-version="v8"] .v6-hero-proofs > div {
    min-height: 9rem;
    padding: 1rem 1.1rem;
  }

  [data-version="v8"] .v6-hero-proofs strong {
    top: .9rem;
    right: 1.1rem;
    left: 1.1rem;
    font-size: .92rem;
  }

  [data-version="v8"] .v6-hero-proofs span {
    margin-top: 1.25rem;
    font-size: clamp(1.15rem, 5vw, 1.4rem);
  }

  [data-version="v8"] .v6-hero-proofs > div:first-child span {
    font-size: clamp(1.15rem, 5vw, 1.4rem);
  }

  [data-version="v8"] .v6-hero-proofs > div:nth-of-type(2) span {
    font-size: clamp(1.1rem, 4.5vw, 1.25rem);
  }

  [data-version="v8"] .v8-hero-summary br { display: none; }
}

@media (max-width: 720px) {
  [data-version="v8"] #process .product-process { grid-template-columns: 1fr; }
}