:root {
  --ink: #202631;
  --muted: #667085;
  --navy: #1f4e79;
  --teal: #1d7a74;
  --amber: #b4772a;
  --green: #4c7c4a;
  --line: #d7dee8;
  --soft: #f5f7fa;
  --white: #ffffff;
  --shadow: 0 18px 48px rgba(31, 78, 121, 0.10);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Yu Gothic", "YuGothic", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  line-height: 1.75;
  letter-spacing: 0;
}

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

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.96);
  border-top: 8px solid var(--navy);
  border-bottom: 1px solid var(--line);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--teal);
}

.brand {
  color: var(--navy);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

.header-nav a {
  text-decoration: none;
}

.header-nav a:hover {
  color: var(--navy);
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 86px 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  align-items: center;
  min-height: 680px;
  gap: 60px;
  padding-top: 78px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--navy);
  font-size: 14px;
  font-weight: 700;
}

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

h1 {
  margin: 0;
  font-size: clamp(44px, 6vw, 78px);
  line-height: 1.08;
  font-weight: 800;
}

h2 {
  margin: 0;
  font-size: clamp(30px, 3.4vw, 46px);
  line-height: 1.2;
  font-weight: 800;
}

h3 {
  margin: 12px 0 14px;
  font-size: 24px;
  line-height: 1.35;
}

.lead {
  margin: 28px 0 0;
  color: var(--ink);
  font-size: clamp(23px, 2.3vw, 32px);
  font-weight: 700;
  line-height: 1.5;
}

.summary {
  max-width: 680px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.actions.center {
  justify-content: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 13px 20px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
  text-decoration: none;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease, color 0.16s ease;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.button.primary {
  color: var(--white);
  background: var(--navy);
  border-color: var(--navy);
}

.button.secondary {
  color: var(--navy);
  background: var(--white);
  border-color: var(--navy);
}

.button.ghost {
  color: var(--muted);
  background: var(--white);
}

.hero-panel {
  padding: 38px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.hero-number-row {
  display: grid;
  grid-template-columns: auto 1fr auto 1fr auto 1fr auto;
  align-items: center;
  gap: 14px;
}

.hero-number-row span {
  font-size: clamp(44px, 5vw, 66px);
  font-weight: 800;
  line-height: 1;
}

.hero-number-row span:nth-of-type(1) {
  color: var(--navy);
}

.hero-number-row span:nth-of-type(2) {
  color: var(--teal);
}

.hero-number-row span:nth-of-type(3) {
  color: var(--amber);
}

.hero-number-row span:nth-of-type(4) {
  color: var(--green);
}

.hero-number-row i {
  display: block;
  height: 2px;
  background: var(--line);
  position: relative;
}

.hero-number-row i::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -1px;
  width: 8px;
  height: 8px;
  border-top: 2px solid var(--line);
  border-right: 2px solid var(--line);
  transform: translateY(-50%) rotate(45deg);
}

.hero-panel p {
  margin: 26px 0 0;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
}

.split {
  display: grid;
  grid-template-columns: minmax(260px, 0.86fr) minmax(0, 1.14fr);
  gap: 70px;
  border-top: 1px solid var(--line);
}

.text-block p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 18px;
}

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

.section-head {
  max-width: 860px;
  margin-bottom: 34px;
}

.section-head.compact {
  max-width: 780px;
}

.section-head p:not(.eyebrow) {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.feature {
  border-top: 1px solid var(--line);
}

.wide-figure {
  margin: 0;
  padding: clamp(12px, 2vw, 18px);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 38px rgba(31, 78, 121, 0.08);
}

.wide-figure img {
  width: 100%;
  border-radius: 4px;
}

.cards {
  display: grid;
  gap: 22px;
}

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

.card {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.card-kicker {
  display: inline-block;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
}

.card p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 16px;
}

.card p:last-child {
  margin-bottom: 0;
}

.layer-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.layer-list li {
  padding: 8px 10px;
  color: var(--navy);
  background: var(--soft);
  border-left: 4px solid var(--teal);
  font-size: 14px;
  font-weight: 700;
}

.tag {
  display: inline-flex;
  padding: 5px 10px;
  border-radius: 999px;
  color: var(--white);
  font-size: 12px;
  font-weight: 700;
}

.tag.navy {
  background: var(--navy);
}

.tag.amber {
  background: var(--amber);
}

.tag.green {
  background: var(--green);
}

.model-card {
  min-height: 260px;
}

.text-link {
  display: inline-flex;
  margin-top: 12px;
  color: var(--navy);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.stats-section {
  border-top: 1px solid var(--line);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 18px;
}

.stat-card {
  min-height: 158px;
  padding: 26px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.stat-card strong {
  display: block;
  color: var(--teal);
  font-size: 58px;
  line-height: 1;
}

.main-stat strong {
  color: var(--navy);
  font-size: 72px;
}

.stat-card span {
  display: block;
  margin-top: 16px;
  color: var(--ink);
  font-weight: 700;
}

.cta {
  width: min(960px, calc(100% - 40px));
  margin-bottom: 48px;
  padding: 62px clamp(22px, 5vw, 72px);
  text-align: center;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.cta p:not(.eyebrow) {
  max-width: 760px;
  margin: 22px auto 0;
  color: var(--muted);
  font-size: 18px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 5vw, 72px);
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 13px;
}

.site-footer a {
  color: var(--navy);
  font-weight: 700;
  text-decoration: none;
}

@media (max-width: 980px) {
  .section {
    padding: 68px 0;
  }

  .hero,
  .split {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .hero {
    min-height: auto;
  }

  .cards.three,
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 20px;
  }

  .header-nav {
    flex-wrap: wrap;
    gap: 12px 18px;
  }

  .section,
  .cta {
    width: min(100% - 28px, 1120px);
  }

  .hero {
    padding-top: 54px;
  }

  .lead {
    font-size: 22px;
  }

  .summary,
  .section-head p:not(.eyebrow),
  .text-block p,
  .cta p:not(.eyebrow) {
    font-size: 16px;
  }

  .actions,
  .actions.center {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-panel {
    padding: 24px;
  }

  .hero-number-row {
    grid-template-columns: auto 1fr auto;
    row-gap: 18px;
  }

  .hero-number-row span {
    font-size: 38px;
  }

  .hero-number-row span:nth-of-type(3) {
    grid-column: 1;
  }

  .hero-number-row i:nth-of-type(2) {
    grid-column: 2;
  }

  .hero-number-row span:nth-of-type(4) {
    grid-column: 3;
  }

  .hero-number-row i:nth-of-type(3) {
    display: none;
  }

  .wide-figure {
    margin-left: -14px;
    margin-right: -14px;
    border-left: 0;
    border-right: 0;
    border-radius: 0;
  }

  .card,
  .stat-card {
    padding: 22px;
  }

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