:root {
  --concept-green: #43a72b;
  --concept-green-dark: #237320;
  --concept-green-pale: #eaf7e5;
  --concept-orange: #ed702d;
  --concept-ink: #1e2b27;
  --concept-muted: #58645f;
}

/* AIデータセンター構想 */
.concept-page {
  color: var(--concept-ink);
  background: #eef2ef;
}

.concept-shell {
  width: min(1180px, 100%);
  margin: 0 auto;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 18px 60px rgb(23 55 38 / 10%);
}

.concept-hero,
.concept-roadmap,
.concept-values {
  padding: 68px 72px;
}

.concept-partners {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 26px;
  min-height: 76px;
  margin-bottom: 38px;
}

.concept-logo {
  display: block;
  width: auto;
  object-fit: contain;
}

.concept-logo-systena {
  height: 68px;
}

.concept-logo-supermicro {
  height: 69px;
}

.concept-logo-shima {
  display: flex;
  align-items: center;
  gap: 7px;
}

.concept-logo-shima img:first-child {
  width: 70px;
  height: 68px;
  object-fit: contain;
}

.concept-logo-shima img:last-child {
  width: 64px;
  height: 35px;
  object-fit: contain;
}

.concept-partner-cross {
  color: #7d8984;
  font-size: 36px;
  font-weight: 200;
  line-height: 1;
}

.concept-hero-heading {
  position: relative;
  overflow: hidden;
  padding: 34px 42px;
  text-align: center;
  background:
    radial-gradient(circle at 90% 10%, rgb(255 255 255 / 85%) 0 6%, transparent 6.3%),
    linear-gradient(125deg, #dff3d7, #f3fbef);
  border-left: 8px solid var(--concept-green);
  border-radius: 10px;
}

.concept-hero-heading::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -110px;
  width: 270px;
  height: 270px;
  border: 44px solid rgb(67 167 43 / 10%);
  border-radius: 50%;
}

.concept-eyebrow,
.concept-section-heading > p {
  margin: 0 0 8px;
  color: var(--concept-green-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.concept-hero-heading h1 {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: clamp(30px, 4.2vw, 50px);
  line-height: 1.42;
  letter-spacing: 0.05em;
}

.concept-hero-heading h1 span {
  color: var(--concept-green-dark);
}

.concept-overview {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(390px, 0.9fr);
  gap: 54px;
  align-items: center;
  margin-top: 54px;
}

.concept-overview-copy {
  font-size: 18px;
}

.concept-overview-copy p {
  margin: 0 0 18px;
}

.concept-overview-visual {
  position: relative;
  min-height: 360px;
}

.concept-overview-visual figure {
  margin: 0;
  overflow: hidden;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 16px 34px rgb(21 56 39 / 20%);
}

.concept-overview-visual img {
  display: block;
  width: 100%;
  height: 100%;
}

.concept-visual-aerial {
  position: absolute;
  top: 0;
  left: 0;
  width: 68%;
}

.concept-visual-aerial img {
  aspect-ratio: 1.7;
  object-fit: cover;
}

.concept-visual-hardware {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 82%;
  padding: 8px;
}

.concept-visual-hardware img {
  aspect-ratio: 2;
  object-fit: contain;
}

.concept-roadmap {
  background:
    linear-gradient(rgb(255 255 255 / 94%), rgb(255 255 255 / 94%)),
    repeating-linear-gradient(45deg, #edf3ef 0 1px, transparent 1px 14px);
}

.concept-section-heading {
  margin-bottom: 48px;
  text-align: center;
}

.concept-section-heading h2 {
  margin: 0;
  font-size: clamp(27px, 3.2vw, 40px);
  line-height: 1.4;
}

.concept-timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 74px;
  row-gap: 38px;
  align-items: start;
}

.concept-timeline::before {
  content: "";
  position: absolute;
  top: 14px;
  bottom: 210px;
  left: 50%;
  width: 3px;
  background: linear-gradient(var(--concept-green), var(--concept-orange));
  transform: translateX(-50%);
}

.concept-milestone {
  position: relative;
  padding: 28px 30px;
  background: #fff;
  border: 1px solid #dce5df;
  border-radius: 12px;
  box-shadow: 0 10px 28px rgb(24 58 40 / 8%);
}

.concept-milestone::after {
  content: "";
  position: absolute;
  top: 38px;
  width: 17px;
  height: 17px;
  background: #fff;
  border: 5px solid var(--concept-green);
  border-radius: 50%;
}

.concept-milestone-left {
  grid-column: 1;
}

.concept-milestone-left::after {
  right: -47.5px;
}

.concept-milestone-right {
  grid-column: 2;
  margin-top: 95px;
}

.concept-milestone-right::after {
  left: -45.5px;
}

.concept-milestone-date {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--concept-green-dark);
  font-size: 16px;
  font-weight: 800;
}

.concept-milestone h3 {
  margin: 0 0 10px;
  font-size: 23px;
  line-height: 1.5;
}

.concept-milestone p {
  margin: 0;
  color: var(--concept-muted);
}

.concept-milestone-final {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 320px 1fr;
  align-items: center;
  gap: 38px;
  margin-top: 10px;
  padding: 22px 38px;
  color: #fff;
  background: linear-gradient(125deg, #d95b1d, var(--concept-orange));
  border: 0;
  box-shadow: 0 16px 32px rgb(190 73 17 / 18%);
}

.concept-milestone-final::after {
  top: -29px;
  left: 50%;
  border-color: var(--concept-orange);
  transform: translateX(-50%);
}

.concept-milestone-final p {
  color: #fff;
}

.concept-milestone-final .concept-milestone-date {
  padding: 10px 20px;
  color: var(--concept-orange);
  background: #fff;
  border-radius: 999px;
  font-size: 30px;
  line-height: 1;
  letter-spacing: 0.04em;
}

.concept-milestone-final h3 {
  font-size: 32px;
}

.concept-final-illustration {
  align-self: stretch;
  display: grid;
  place-items: center;
  min-height: 230px;
  padding: 10px;
  background: rgb(255 255 255 / 93%);
  border-radius: 9px;
}

.concept-final-illustration img {
  display: block;
  width: 100%;
  height: auto;
}

.concept-values {
  background: #f5fbf2;
}

.concept-section-heading-values > p {
  color: var(--concept-green);
}

.concept-value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.concept-value-card {
  position: relative;
  overflow: hidden;
  padding: 14px 24px 30px;
  text-align: center;
  background: #fff;
  border: 1px solid #dbead5;
  border-radius: 22px;
  box-shadow: 0 12px 30px rgb(36 93 38 / 8%);
}

.concept-value-card::after {
  content: "";
  position: absolute;
  right: -38px;
  bottom: -55px;
  width: 125px;
  height: 125px;
  background: rgb(67 167 43 / 8%);
  border-radius: 50%;
}

.concept-value-visual {
  position: relative;
  margin: -14px -24px 22px;
}

.concept-value-visual img {
  display: block;
  width: 100%;
  max-width: none;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.concept-value-number {
  position: absolute;
  bottom: -20px;
  right: 42px;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: #fff;
  background: var(--concept-green);
  border: 4px solid #fff;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 800;
}

.concept-value-card h3 {
  margin: 0 0 16px;
  font-size: 23px;
  line-height: 1.45;
}

.concept-value-card p {
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--concept-muted);
  font-size: 15px;
}

/* Supermicroバナー */
.smc-banner {
  padding: 32px 20px;
  background: var(--sec-bg);
}

.smc-banner-inner {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.smc-banner-link {
  display: block;
}

.smc-banner-card {
  display: flex;
  align-items: center;
  gap: 40px;
  aspect-ratio: 1918 / 353;
  padding: 0 52px;
  text-align: left;
  background: linear-gradient(105deg, #eef7e9 0%, #8dcf6f 45%, #43a72b 100%);
  border-radius: 12px;
  box-shadow: 0 10px 26px rgb(23 90 35 / 15%);
  transition: opacity 0.2s, transform 0.2s;
}

.smc-banner-card:hover {
  opacity: 0.92;
  transform: translateY(-2px);
}

.smc-banner-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  padding: 20px 34px;
  background: #fff;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgb(23 90 35 / 18%);
}

.smc-banner-logo img {
  display: block;
  height: 52px;
  width: auto;
}

.smc-banner-text {
  flex: 1;
  min-width: 0;
}

.smc-banner-title {
  display: block;
  color: #17591f;
  font-size: 38px;
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.3;
}

.smc-banner-title-ja {
  margin-left: 10px;
}

.smc-banner-sub {
  display: block;
  margin-top: 6px;
  color: #f0770a;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.smc-banner-arrow {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  color: #17591f;
  background: #fff;
  border-radius: 50%;
  font-size: 24px;
  font-weight: 700;
  box-shadow: 0 4px 14px rgb(23 90 35 / 18%);
}

.smc-banner-link-gold {
  margin-top: 20px;
}

.smc-banner-img {
  display: block;
  width: 100%;
  height: auto;
}

/* 志摩市バナー */
.shima-banner-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 24px;
  aspect-ratio: 1918 / 353;
  margin-bottom: 20px;
  padding: 16px 51px;
  background:
    url("img/shima/footer_bg.png") center 82% / 100% auto no-repeat,
    #fdf6ee;
  border: 1px solid #d7ecf2;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 10px 26px rgb(66 165 196 / 18%);
  transition: opacity 0.2s, transform 0.2s;
}

.shima-banner-card:hover {
  opacity: 0.92;
  transform: translateY(-2px);
}

.shima-banner-body {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex: 1;
  min-width: 0;
}

.shima-banner-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.shima-banner-logo img {
  display: block;
  height: 110px;
  width: auto;
}

.shima-banner-map {
  flex-shrink: 0;
}

.shima-banner-map img {
  display: block;
  height: 150px;
  width: auto;
}

.shima-banner-arrow {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  color: #1d3a63;
  background: #fff;
  border-radius: 50%;
  font-size: 24px;
  font-weight: 700;
  box-shadow: 0 4px 14px rgb(66 165 196 / 22%);
}

@media (max-width: 820px) {
  .concept-hero,
  .concept-roadmap,
  .concept-values {
    padding: 42px 22px;
  }

  .concept-partners {
    gap: 9px;
    min-height: 45px;
    margin-bottom: 25px;
  }

  .concept-logo-systena {
    height: 38px;
  }

  .concept-logo-supermicro {
    height: 39px;
  }

  .concept-logo-shima {
    gap: 3px;
  }

  .concept-logo-shima img:first-child {
    width: 40px;
    height: 39px;
  }

  .concept-logo-shima img:last-child {
    width: 42px;
    height: auto;
  }

  .concept-partner-cross {
    font-size: 22px;
  }

  .concept-hero-heading {
    padding: 25px 18px;
    border-left-width: 5px;
  }

  .concept-eyebrow {
    font-size: 10px;
    letter-spacing: 0.11em;
  }

  .concept-hero-heading h1 {
    font-size: 26px;
    letter-spacing: 0.02em;
  }

  .concept-overview {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 34px;
  }

  .concept-overview-copy {
    font-size: 16px;
  }

  .concept-overview-visual {
    min-height: clamp(320px, 72vw, 450px);
  }

  .concept-visual-aerial {
    width: 76%;
  }

  .concept-visual-hardware {
    top: clamp(120px, 30vw, 175px);
    bottom: auto;
    width: 82%;
  }

  .concept-timeline {
    grid-template-columns: 24px 1fr;
    gap: 22px 14px;
  }

  .concept-timeline::before {
    top: 18px;
    bottom: 250px;
    left: 11px;
  }

  .concept-milestone,
  .concept-milestone-left,
  .concept-milestone-right,
  .concept-milestone-final {
    grid-column: 2;
    margin-top: 0;
  }

  .concept-milestone::after,
  .concept-milestone-left::after,
  .concept-milestone-right::after {
    top: 32px;
    left: -35.5px;
    right: auto;
  }

  .concept-milestone {
    padding: 22px 20px;
  }

  .concept-milestone h3 {
    font-size: 20px;
  }

  .concept-milestone-final {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 20px;
  }

  .concept-milestone-final::after {
    top: 32px;
    left: -35.5px;
    transform: none;
  }

  .concept-milestone-final h3 {
    font-size: 28px;
  }

  .concept-milestone-final .concept-milestone-date {
    padding: 9px 16px;
    font-size: 26px;
  }

  .concept-roadmap-heading-tail {
    display: block;
    white-space: nowrap;
  }

  .concept-final-illustration {
    min-height: auto;
  }

  .concept-value-grid {
    grid-template-columns: 1fr;
  }

  .concept-value-card {
    padding-bottom: 28px;
  }
}

@media (max-width: 767px) {
  .smc-banner {
    padding: 24px 12px;
  }

  .smc-banner-card {
    flex-direction: column;
    justify-content: center;
    gap: 14px;
    aspect-ratio: auto;
    padding: 26px 20px;
    text-align: center;
  }

  .smc-banner-logo img {
    height: 32px;
  }

  .smc-banner-title {
    font-size: 24px;
  }

  .smc-banner-title-ja {
    display: block;
    margin-left: 0;
  }

  .smc-banner-sub {
    font-size: 14px;
  }

  .smc-banner-arrow {
    display: none;
  }

  .smc-banner-link-gold {
    margin-top: 12px;
  }

  .shima-banner-card {
    aspect-ratio: auto;
    margin-bottom: 12px;
    padding: 26px 20px;
    background-size: auto 100%;
    background-position: center bottom;
  }

  .shima-banner-body {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }

  .shima-banner-logo img {
    height: 80px;
  }

  .shima-banner-map img {
    height: 200px;
    margin: 0 auto;
  }

  .shima-banner-arrow {
    display: none;
  }
}