.ai-solutions-page .ai-solutions-hero {
  min-height: 620px;
  overflow: hidden;
  background: #071620;
}

.ai-solutions-page .ai-solutions-hero::before {
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(5, 18, 29, .84) 0%, rgba(5, 18, 29, .76) 36%, rgba(5, 18, 29, .38) 60%, rgba(5, 18, 29, .1) 84%, rgba(5, 18, 29, .04) 100%),
    linear-gradient(180deg, rgba(4, 15, 24, .08) 0%, rgba(4, 15, 24, .02) 58%, rgba(4, 15, 24, .24) 100%);
}

.ai-solutions-hero__visual {
  position: absolute;
  z-index: -2;
  inset: 0;
  overflow: hidden;
  background: #e9edf0;
  pointer-events: none;
}

.ai-solutions-hero__canvas,
.ai-solutions-hero__fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.ai-solutions-hero__canvas {
  z-index: 0;
  display: block;
  outline: 0;
}

.ai-solutions-hero__fallback {
  z-index: 1;
  background: #e9edf0;
  opacity: 1;
  visibility: visible;
  transition: opacity .55s ease, visibility .55s ease;
}

.ai-solutions-hero__fallback img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.ai-solutions-hero__visual.is-ready .ai-solutions-hero__fallback {
  opacity: 0;
  visibility: hidden;
}

.ai-solutions-page .ai-solutions-hero > .container {
  position: relative;
  z-index: 1;
}

.ai-solutions-page .ai-solutions-hero .tech-hero__content {
  max-width: 730px;
  padding: 94px 0 82px;
}

.ai-solutions-page .ai-solutions-hero h1 {
  max-width: 730px;
  text-shadow: 0 3px 22px rgba(0, 0, 0, .68);
  text-wrap: balance;
}

.ai-solutions-page .ai-solutions-hero .tech-eyebrow {
  text-shadow: 0 2px 13px rgba(0, 0, 0, .72);
}

.ai-solutions-page .ai-solutions-hero .tech-hero__lead {
  max-width: 670px;
  color: #f0f5f7;
  font-size: 17px;
  text-shadow: 0 2px 16px rgba(0, 0, 0, .72);
}

.ai-solutions-hero__subtitle {
  margin: 16px 0 0;
  color: #f5f8fa;
  font-family: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(20px, 2.2vw, 31px);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: .03em;
  text-shadow: 0 2px 18px rgba(0, 0, 0, .7);
}

.ai-difference-grid,
.ai-proof-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.ai-difference-card,
.ai-proof-grid article {
  min-height: 100%;
  padding: 30px;
  border-top: 3px solid var(--tech-gold);
  background: #fff;
  box-shadow: 0 14px 32px rgba(16, 33, 45, .08);
}
.ai-card-index,
.ai-service-card > span,
.ai-process-grid > li > span {
  display: block;
  margin-bottom: 16px;
  color: var(--tech-gold);
  font: 700 14px/1 "Oswald", sans-serif;
}
.ai-difference-card h3,
.ai-service-card h3,
.ai-proof-grid h3,
.ai-industry-grid h3,
.ai-process-grid h3 {
  margin-bottom: 12px;
  color: var(--tech-ink);
  font: 700 23px/1.35 "Oswald", sans-serif;
}
.ai-difference-card p,
.ai-service-card p,
.ai-proof-grid p,
.ai-industry-grid p,
.ai-process-grid p {
  margin-bottom: 0;
  color: var(--tech-muted);
  font-size: 14px;
  line-height: 1.85;
}
.ai-service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--tech-line);
  border-left: 1px solid var(--tech-line);
}
.ai-service-card {
  min-height: 230px;
  padding: 30px;
  border-right: 1px solid var(--tech-line);
  border-bottom: 1px solid var(--tech-line);
  background: #fff;
}
.ai-industry-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  background: var(--tech-line);
  border: 1px solid var(--tech-line);
}
.ai-industry-grid article {
  min-height: 184px;
  padding: 28px;
  background: #fff;
}
.ai-industry-grid i {
  margin-bottom: 22px;
  color: var(--tech-teal);
  font-size: 30px;
}
.ai-process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(255, 255, 255, .22);
  list-style: none;
}
.ai-process-grid li {
  min-height: 235px;
  padding: 30px 25px;
  border-right: 1px solid rgba(255, 255, 255, .18);
}
.ai-process-grid li:last-child { border-right: 0; }
.ai-process-grid h3,
.tech-section--dark .ai-process-grid h3 { color: #fff; }
.ai-process-grid p,
.tech-section--dark .ai-process-grid p { color: #d2dde2; }
.ai-process-note {
  margin: 22px 0 0;
  color: #b8c8cf;
  font-size: 12px;
  line-height: 1.7;
}
.ai-proof-grid article:nth-child(2) { border-top-color: var(--tech-teal); }
.ai-proof-grid article:nth-child(3) { border-top-color: var(--tech-navy-soft); }
.ai-faq-layout {
  display: grid;
  grid-template-columns: minmax(250px, .75fr) minmax(0, 1.45fr);
  gap: 62px;
}
.ai-faq-layout::before,
.ai-faq-layout::after { display: none; }
.ai-faq-list { border-top: 1px solid var(--tech-line); }
.ai-faq-list details {
  border-bottom: 1px solid var(--tech-line);
  background: #fff;
}
.ai-faq-list summary {
  position: relative;
  padding: 23px 54px 23px 0;
  color: var(--tech-ink);
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  list-style: none;
}
.ai-faq-list summary::-webkit-details-marker { display: none; }
.ai-faq-list summary::after {
  position: absolute;
  top: 50%;
  right: 12px;
  width: 28px;
  height: 28px;
  color: var(--tech-teal);
  content: "+";
  font: 400 27px/26px "Oswald", sans-serif;
  text-align: center;
  transform: translateY(-50%);
}
.ai-faq-list details[open] summary::after { content: "−"; }
.ai-faq-list details p {
  max-width: 760px;
  margin: -4px 48px 22px 0;
  color: var(--tech-muted);
  font-size: 14px;
  line-height: 1.85;
}
@media (max-width: 991px) {
  .ai-solutions-page .ai-solutions-hero {
    min-height: 590px;
  }
  .ai-solutions-page .ai-solutions-hero::before {
    background:
      linear-gradient(90deg, rgba(5, 18, 29, .82) 0%, rgba(5, 18, 29, .68) 58%, rgba(5, 18, 29, .28) 100%),
      linear-gradient(180deg, rgba(4, 15, 24, .07) 0%, rgba(4, 15, 24, .24) 100%);
  }
  .ai-solutions-page .ai-solutions-hero .tech-hero__content {
    max-width: 660px;
    padding: 78px 0 70px;
  }
  .ai-difference-grid,
  .ai-proof-grid,
  .ai-industry-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ai-process-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ai-process-grid li:nth-child(2) { border-right: 0; }
  .ai-faq-layout { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 767px) {
  .ai-solutions-page .ai-solutions-hero {
    min-height: 570px;
  }
  .ai-solutions-page .ai-solutions-hero::before {
    background:
      linear-gradient(180deg, rgba(5, 18, 29, .62) 0%, rgba(5, 18, 29, .58) 62%, rgba(5, 18, 29, .72) 100%),
      linear-gradient(90deg, rgba(5, 18, 29, .18) 0%, rgba(5, 18, 29, .08) 100%);
  }
  .ai-solutions-page .ai-solutions-hero .tech-hero__content {
    max-width: none;
    padding: 66px 0 58px;
  }
  .ai-solutions-page .ai-solutions-hero .tech-hero__lead {
    font-size: 15px;
    line-height: 1.75;
  }
  .ai-difference-grid,
  .ai-service-grid,
  .ai-proof-grid,
  .ai-industry-grid,
  .ai-process-grid { grid-template-columns: 1fr; }
  .ai-difference-card,
  .ai-service-card,
  .ai-proof-grid article,
  .ai-industry-grid article,
  .ai-process-grid li { min-height: 0; padding: 24px 21px; }
  .ai-process-grid li,
  .ai-process-grid li:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, .18);
  }
  .ai-process-grid li:last-child { border-bottom: 0; }
}
.ai-proof-grid a {
  color: #0f6f78;
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: rgba(15, 111, 120, .35);
  text-underline-offset: 3px;
}
.ai-proof-grid a:hover,
.ai-proof-grid a:focus {
  color: #9b711e;
  text-decoration-color: currentColor;
}
.ai-proof-source {
  display: block;
  margin-top: 14px;
  color: #70818b;
  font-size: 10px;
  line-height: 1.7;
}
/* Appendix G v2: visual support and use cases */
.ai-section-visual {
  margin: 0 0 34px;
  overflow: hidden;
  border-top: 3px solid var(--tech-gold);
  background: #e8eef1;
}

.ai-section-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
}

.ai-section-visual--services img {
  max-height: none;
}

.ai-section-visual--proof {
  border-top-color: var(--tech-teal);
}

.ai-section-visual--proof img {
  max-height: none;
}

.ai-use-cases,
.ai-use-case {
  scroll-margin-top: 108px;
}


.ai-use-cases .ai-section-visual--industry-use-cases {
  margin-bottom: clamp(42px, 5vw, 68px);
}

.ai-use-cases .tech-heading {
  margin-bottom: clamp(34px, 4vw, 54px);
}

.ai-use-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.ai-use-case {
  display: flex;
  min-width: 0;
  min-height: 100%;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--tech-line);
  border-top: 3px solid var(--tech-gold);
  background: #fff;
  box-shadow: 0 14px 32px rgba(16, 33, 45, .08);
}

.ai-use-case:nth-child(2) {
  border-top-color: var(--tech-teal);
}

.ai-use-case:nth-child(3) {
  border-top-color: var(--tech-navy-soft);
}

.ai-use-case__media {
  display: grid;
  width: 100%;
  margin: 0;
  aspect-ratio: 16 / 9;
  place-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--tech-line);
  background: #edf2f4;
}

.ai-use-case__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.ai-use-case__body {
  display: flex;
  padding: 27px 25px 25px;
  flex: 1 1 auto;
  flex-direction: column;
}

.ai-use-case h3 {
  margin: 0 0 14px;
  color: var(--tech-ink);
  font: 700 22px/1.45 "Oswald", "Noto Sans JP", sans-serif;
  letter-spacing: 0;
  text-wrap: balance;
}

.ai-use-case p {
  margin: 0;
  color: var(--tech-muted);
  font-size: 14px;
  line-height: 1.9;
  line-break: strict;
  text-wrap: pretty;
}

.ai-use-case a {
  display: inline-flex;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--tech-line);
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--tech-teal);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.6;
}

.ai-use-case a:hover,
.ai-use-case a:focus {
  color: var(--tech-gold);
}

@media (max-width: 767px) {
  .ai-section-visual {
    margin-bottom: 26px;
  }

  .ai-use-cases,
  .ai-use-case {
    scroll-margin-top: 104px;
  }

  .ai-use-cases-grid {
    grid-template-columns: 1fr;
  }

  .ai-use-case__body {
    padding: 24px 21px 23px;
  }

  .ai-use-case h3 {
    font-size: 21px;
  }

  .ai-use-case p {
    font-size: 13px;
  }
}

/* Appendix K v2: AI solutions expansion */
#why-us,
#no-data,
#services-detail,
#architecture-examples,
#dev-capability,
#cost,
#security {
  scroll-margin-top: 112px;
}

.ai-compare-table {
  overflow: hidden;
  border: 1px solid var(--tech-line);
  background: #fff;
  box-shadow: 0 14px 32px rgba(16, 33, 45, .08);
}

.ai-compare-table table {
  width: 100%;
  margin: 0;
  border-collapse: collapse;
  table-layout: fixed;
}

.ai-compare-table th,
.ai-compare-table td {
  padding: 22px 24px;
  border-right: 1px solid var(--tech-line);
  border-bottom: 1px solid var(--tech-line);
  color: var(--tech-muted);
  font-size: 14px;
  line-height: 1.8;
  vertical-align: top;
}

.ai-compare-table th:last-child,
.ai-compare-table td:last-child {
  border-right: 0;
}

.ai-compare-table tr:last-child th,
.ai-compare-table tr:last-child td {
  border-bottom: 0;
}

.ai-compare-table thead th {
  color: var(--tech-ink);
  font-weight: 700;
  background: var(--tech-soft);
}

.ai-compare-table tbody th {
  width: 20%;
  color: var(--tech-ink);
  font-weight: 700;
}

.ai-compare-table tbody td:last-child {
  color: var(--tech-ink);
}

.ai-section-note {
  margin: 18px 0 0;
  color: var(--tech-muted);
  font-size: 12px;
  line-height: 1.8;
}

.ai-text-panel {
  max-width: 960px;
  padding: 34px;
  border-left: 3px solid var(--tech-gold);
  background: #fff;
  box-shadow: 0 14px 32px rgba(16, 33, 45, .08);
}

.ai-text-panel p {
  margin-bottom: 18px;
  color: var(--tech-muted);
  font-size: 15px;
  line-height: 1.95;
}

.ai-text-panel p:last-child {
  margin-bottom: 0;
}

.ai-text-cta,
.ai-architecture-card a {
  display: inline-flex;
  margin-top: 10px;
  align-items: center;
  gap: 10px;
  color: var(--tech-teal);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.6;
  text-decoration: underline;
  text-decoration-color: rgba(20, 123, 130, .32);
  text-underline-offset: 3px;
}

.ai-text-cta:hover,
.ai-text-cta:focus,
.ai-architecture-card a:hover,
.ai-architecture-card a:focus {
  color: var(--tech-gold);
  text-decoration-color: currentColor;
}

.ai-detail-grid,
.ai-architecture-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.ai-architecture-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.ai-detail-card,
.ai-architecture-card {
  min-width: 0;
  min-height: 100%;
  padding: 30px;
  border: 1px solid var(--tech-line);
  border-top: 3px solid var(--tech-gold);
  background: #fff;
  box-shadow: 0 14px 32px rgba(16, 33, 45, .08);
}

.ai-detail-card:nth-child(2),
.ai-architecture-card:nth-child(2) {
  border-top-color: var(--tech-teal);
}

.ai-detail-card:nth-child(3),
.ai-architecture-card:nth-child(3) {
  border-top-color: var(--tech-navy-soft);
}

.ai-detail-card h3,
.ai-architecture-card h3 {
  margin-bottom: 20px;
  color: var(--tech-ink);
  font: 700 22px/1.45 "Oswald", "Noto Sans JP", sans-serif;
}

.ai-detail-card dl,
.ai-architecture-card dl {
  margin: 0;
}

.ai-detail-card dt,
.ai-architecture-card dt {
  margin: 18px 0 7px;
  color: var(--tech-ink);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.6;
}

.ai-detail-card dt:first-child,
.ai-architecture-card dt:first-child {
  margin-top: 0;
}

.ai-detail-card dd,
.ai-architecture-card dd {
  margin: 0;
  color: var(--tech-muted);
  font-size: 14px;
  line-height: 1.85;
}

.ai-number-list,
.ai-security-list,
.ai-capability-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.ai-number-list {
  display: grid;
  gap: 10px;
  margin: 22px 0;
  counter-reset: ai-cost;
}

.ai-number-list li,
.ai-security-list li,
.ai-capability-list li {
  position: relative;
  padding: 16px 18px 16px 48px;
  border: 1px solid var(--tech-line);
  background: #fff;
  color: var(--tech-muted);
  font-size: 14px;
  line-height: 1.85;
}

.ai-number-list li {
  counter-increment: ai-cost;
}

.ai-number-list li::before,
.ai-security-list li::before,
.ai-capability-list li::before {
  position: absolute;
  top: 18px;
  left: 18px;
  color: var(--tech-gold);
  font: 700 13px/1 "Oswald", sans-serif;
}

.ai-number-list li::before {
  content: counter(ai-cost, decimal-leading-zero);
}

.ai-security-list,
.ai-capability-list {
  display: grid;
  gap: 12px;
}

.ai-security-list li::before,
.ai-capability-list li::before {
  content: "";
  top: 23px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--tech-gold);
}

.ai-capability-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.ai-capability-list strong {
  color: var(--tech-ink);
}

@media (max-width: 991px) {
  .ai-detail-grid,
  .ai-architecture-grid,
  .ai-capability-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767px) {
  #why-us,
  #no-data,
  #services-detail,
  #architecture-examples,
  #dev-capability,
  #cost,
  #security {
    scroll-margin-top: 104px;
  }

  .ai-compare-table {
    overflow: visible;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .ai-compare-table table,
  .ai-compare-table thead,
  .ai-compare-table tbody,
  .ai-compare-table tr,
  .ai-compare-table th,
  .ai-compare-table td {
    display: block;
    width: 100%;
  }

  .ai-compare-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

  .ai-compare-table tbody tr {
    margin-bottom: 16px;
    border: 1px solid var(--tech-line);
    border-top: 3px solid var(--tech-gold);
    background: #fff;
    box-shadow: 0 10px 22px rgba(16, 33, 45, .07);
  }

  .ai-compare-table tbody th,
  .ai-compare-table tbody td {
    border-right: 0;
    padding: 14px 17px;
  }

  .ai-compare-table tbody th {
    background: var(--tech-soft);
  }

  .ai-compare-table td::before {
    display: block;
    margin-bottom: 5px;
    color: var(--tech-gold);
    content: attr(data-label);
    font-size: 11px;
    font-weight: 700;
    line-height: 1.5;
  }

  .ai-text-panel,
  .ai-detail-card,
  .ai-architecture-card {
    padding: 24px 21px;
  }

  .ai-detail-card h3,
  .ai-architecture-card h3 {
    font-size: 21px;
  }

  .ai-number-list li,
  .ai-security-list li,
  .ai-capability-list li {
    padding: 15px 16px 15px 42px;
  }
}

@media (max-width: 767px) {
  .ai-solutions-hero__subtitle {
    margin-top: 12px;
    font-size: clamp(17px, 5.2vw, 22px);
    line-height: 1.5;
  }
}

@media (max-width: 767px) {
  .ai-use-cases .ai-section-visual--industry-use-cases {
    margin-bottom: 34px;
  }

  .ai-use-cases .tech-heading {
    margin-bottom: 30px;
  }
}