:root {
  --fuji: #1e597a;
  --fuji-deep: #183142;
  --sky: #b8deeb;
  --snow: #f8fbfc;
  --mist: #e4efef;
  --forest: #2a6949;
  --cedar: #4e7a57;
  --gold: #e5a33e;
  --earth: #6a5640;
  --ink: #1f2930;
  --muted: #61717a;
  --line: rgba(30, 89, 122, 0.18);
  --shadow: 0 18px 45px rgba(24, 49, 66, 0.15);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--snow);
  color: var(--ink);
  font-family: "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", system-ui, sans-serif;
  line-height: 1.75;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

p,
h1,
h2,
h3,
dd,
li,
span {
  overflow-wrap: anywhere;
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 54px);
  color: #fff;
  background: rgba(24, 49, 66, 0.76);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background:
    linear-gradient(135deg, transparent 48%, var(--snow) 49% 64%, transparent 65%),
    linear-gradient(160deg, var(--fuji), var(--forest));
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.24);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.site-nav a {
  padding: 7px 11px;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a:hover {
  background: rgba(255, 255, 255, 0.13);
  color: #fff;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: center;
  padding: 122px clamp(22px, 7vw, 92px) 72px;
  overflow: hidden;
  color: #fff;
  isolation: isolate;
}

.hero-media,
.hero-shade {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-shade {
  z-index: -1;
  background:
    radial-gradient(circle at 82% 26%, rgba(229, 163, 62, 0.15), transparent 26%),
    linear-gradient(90deg, rgba(24, 49, 66, 0.92) 0%, rgba(24, 49, 66, 0.78) 34%, rgba(24, 49, 66, 0.22) 70%, rgba(24, 49, 66, 0.06) 100%),
    linear-gradient(180deg, rgba(24, 49, 66, 0.38), rgba(24, 49, 66, 0.68));
}

.hero-content {
  width: 100%;
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 720px;
  font-size: clamp(42px, 7vw, 84px);
  line-height: 1.05;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.hero h1 span {
  display: block;
}

.lead {
  max-width: 690px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(17px, 2.2vw, 23px);
  line-height: 1.7;
  font-weight: 650;
  overflow-wrap: anywhere;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 7px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 850;
  text-decoration: none;
}

.button-primary {
  background: var(--gold);
  color: #17232d;
  box-shadow: 0 16px 34px rgba(229, 163, 62, 0.22);
}

.button-secondary {
  border-color: rgba(255, 255, 255, 0.36);
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.hero-notes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  max-width: 660px;
  margin: 34px 0 0;
}

.hero-notes div {
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 7px;
  background: rgba(24, 49, 66, 0.46);
}

.hero-notes dt {
  color: var(--sky);
  font-size: 11px;
  font-weight: 900;
}

.hero-notes dd {
  margin: 4px 0 0;
  color: rgba(255, 255, 255, 0.92);
  font-size: 13px;
  font-weight: 750;
}

.intro-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--fuji-deep);
}

.intro-strip article {
  min-height: 210px;
  padding: clamp(26px, 4vw, 44px);
  background: linear-gradient(135deg, #f8fbfc 0%, #e4efef 100%);
}

.intro-strip span {
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
}

.intro-strip h2 {
  margin: 12px 0 8px;
  color: var(--fuji-deep);
  font-size: 22px;
  line-height: 1.35;
}

.intro-strip p,
.section-head p,
.large-card p,
.stacked-points p,
.program-grid p,
.partner-map p,
.revenue-grid p,
.roadmap p,
.security-grid p,
.closing p {
  margin: 0;
  color: var(--muted);
}

.section {
  padding: clamp(72px, 9vw, 112px) clamp(22px, 6vw, 84px);
  background: #fff;
}

.section-light {
  background: var(--snow);
}

.section-blue {
  background:
    linear-gradient(135deg, rgba(30, 89, 122, 0.95), rgba(42, 105, 73, 0.92)),
    var(--fuji);
  color: #fff;
}

.section-head {
  max-width: 900px;
  margin-bottom: clamp(30px, 5vw, 54px);
}

.section-head h2 {
  margin: 0 0 14px;
  color: var(--fuji-deep);
  font-size: clamp(29px, 4.8vw, 50px);
  line-height: 1.22;
  letter-spacing: 0;
}

.section-blue .section-head h2,
.section-blue .section-head p {
  color: #fff;
}

.section-head p {
  max-width: 820px;
  font-size: 17px;
}

.concept-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 22px;
}

.large-card,
.stacked-points article,
.program-grid article,
.partner-map article,
.revenue-grid article,
.roadmap article,
.security-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.large-card {
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(28px, 5vw, 56px);
  background:
    linear-gradient(135deg, rgba(24, 49, 66, 0.86), rgba(30, 89, 122, 0.62)),
    url("assets/hero-gotemba-fuji.png") center / cover;
  color: #fff;
}

.large-card h3 {
  max-width: 600px;
  margin: 0 0 14px;
  font-size: clamp(27px, 4vw, 45px);
  line-height: 1.12;
}

.large-card p {
  max-width: 680px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 18px;
}

.stacked-points {
  display: grid;
  gap: 16px;
}

.stacked-points article,
.program-grid article,
.partner-map article,
.revenue-grid article,
.roadmap article,
.security-grid article {
  padding: 24px;
}

.stacked-points h3,
.program-grid h3,
.partner-map h3,
.revenue-grid h3,
.roadmap h3,
.security-grid h3 {
  margin: 0 0 8px;
  color: var(--fuji-deep);
  font-size: 20px;
  line-height: 1.35;
}

.program-grid,
.security-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.tag {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--mist);
  color: var(--fuji);
  font-size: 11px;
  font-weight: 900;
}

.journey {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.journey li {
  min-height: 170px;
  padding: 22px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.journey strong {
  display: block;
  margin-bottom: 12px;
  color: var(--gold);
  font-size: 22px;
}

.journey span {
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
}

.partner-map {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.partner-center {
  grid-column: span 4;
  background: linear-gradient(135deg, var(--fuji), var(--forest)) !important;
}

.partner-center h3,
.partner-center p {
  color: #fff;
}

.revenue-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.revenue-grid span {
  display: inline-flex;
  margin-top: 18px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--mist);
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.roadmap {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.roadmap span {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--forest);
  font-size: 12px;
  font-weight: 900;
}

.security-section {
  background: var(--fuji-deep);
}

.security-section .section-head h2,
.security-section .section-head p,
.security-grid h3 {
  color: #fff;
}

.security-grid article {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: none;
}

.security-grid p {
  color: rgba(255, 255, 255, 0.76);
}

.closing {
  padding: clamp(76px, 10vw, 120px) clamp(22px, 6vw, 84px);
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(184, 222, 235, 0.78), transparent 32%),
    var(--snow);
}

.closing h2 {
  max-width: 850px;
  margin: 0 auto 18px;
  color: var(--fuji-deep);
  font-size: clamp(29px, 5vw, 54px);
  line-height: 1.18;
}

.closing p {
  max-width: 760px;
  margin: 0 auto 30px;
  font-size: 17px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 24px clamp(22px, 6vw, 84px);
  background: var(--fuji-deep);
  color: rgba(255, 255, 255, 0.68);
  font-size: 12px;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .hero {
    min-height: 860px;
    padding-top: 158px;
  }

  .hero-shade {
    background:
      linear-gradient(180deg, rgba(24, 49, 66, 0.92), rgba(24, 49, 66, 0.58) 60%, rgba(24, 49, 66, 0.26)),
      linear-gradient(90deg, rgba(24, 49, 66, 0.72), transparent);
  }

  .intro-strip,
  .concept-grid,
  .program-grid,
  .journey,
  .partner-map,
  .revenue-grid,
  .roadmap,
  .security-grid {
    grid-template-columns: 1fr;
  }

  .partner-center {
    grid-column: auto;
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (max-width: 620px) {
  .site-header {
    position: absolute;
    padding: 12px 16px;
  }

  .site-nav a {
    padding: 5px 8px;
    font-size: 11px;
  }

  .hero {
    min-height: 790px;
    padding: 152px 18px 54px;
  }

  .hero-content,
  .hero-actions,
  .hero-notes,
  .lead {
    width: min(100%, calc(100vw - 52px));
    max-width: calc(100vw - 52px);
  }

  .hero h1 {
    max-width: 100%;
    font-size: clamp(35px, 10.8vw, 45px);
    line-height: 1.12;
  }

  .lead {
    max-width: 100%;
    font-size: 15px;
    line-height: 1.62;
  }

  .hero-notes {
    grid-template-columns: 1fr;
  }

  .button {
    width: min(100%, calc(100vw - 52px));
  }

  .section,
  .closing {
    padding-left: 18px;
    padding-right: 18px;
  }

  .intro-strip article,
  .stacked-points article,
  .program-grid article,
  .partner-map article,
  .revenue-grid article,
  .roadmap article,
  .security-grid article {
    padding: 20px;
  }
}