:root {
  --ink: #111827;
  --muted: #5f6b7a;
  --line: #dbe3ea;
  --paper: #fbfcfd;
  --white: #ffffff;
  --lapis: #102a75;
  --lapis-deep: #071a4a;
  --cyan: #4dd9d1;
  --mint: #b8f1dc;
  --gold: #d9b979;
  --shadow: 0 22px 60px rgba(10, 24, 61, 0.14);
  --radius: 8px;
  --header-height: 76px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", "Noto Sans JP", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  line-height: 1.8;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 clamp(20px, 4vw, 56px);
  background: rgba(251, 252, 253, 0.84);
  border-bottom: 1px solid rgba(219, 227, 234, 0.78);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 760;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: linear-gradient(145deg, var(--lapis), #1d5e9f 70%, var(--cyan));
  color: var(--white);
  font-size: 13px;
  line-height: 1;
}

.brand-text {
  font-size: 17px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  color: #263244;
  font-size: 14px;
  font-weight: 650;
}

.site-nav a {
  position: relative;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  background: var(--cyan);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-contact {
  padding: 9px 15px;
  border: 1px solid rgba(16, 42, 117, 0.2);
  border-radius: 999px;
}

.nav-contact::after {
  display: none;
}

.nav-toggle {
  display: none;
}

.hero {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  display: grid;
  align-items: center;
  padding: clamp(58px, 7vw, 112px) clamp(20px, 5vw, 72px);
  overflow: hidden;
  background: #0a1438;
  color: var(--white);
}

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 150px;
  background: linear-gradient(to bottom, rgba(10, 20, 56, 0), var(--paper));
  content: "";
  pointer-events: none;
}

.hero-media {
  position: absolute;
  inset: 0;
}

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

.hero-media::after {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 13, 34, 0.9) 0%, rgba(7, 13, 34, 0.66) 42%, rgba(7, 13, 34, 0.18) 100%),
    radial-gradient(circle at 24% 34%, rgba(77, 217, 209, 0.18), transparent 34%);
  content: "";
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(760px, 100%);
  padding-top: 24px;
}

.eyebrow {
  margin: 0 0 14px;
  color: #278a83;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1.4;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: var(--mint);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  letter-spacing: 0;
  line-height: 1.18;
}

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: clamp(42px, 6.4vw, 86px);
  font-weight: 820;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 3.4vw, 48px);
  font-weight: 790;
}

h3 {
  margin-bottom: 12px;
  font-size: 22px;
}

.hero-lead {
  max-width: 680px;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(16px, 1.8vw, 20px);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: var(--radius);
  font-weight: 760;
  line-height: 1.3;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--cyan);
  color: #042527;
  box-shadow: 0 14px 34px rgba(77, 217, 209, 0.26);
}

.button.secondary {
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: var(--white);
}

.section,
.section-band,
.contact {
  padding: clamp(72px, 9vw, 128px) clamp(20px, 5vw, 72px);
}

.section-inner {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.section-inner.narrow {
  width: min(820px, 100%);
}

.section-band {
  background: var(--paper);
}

.section-muted {
  background: #eef7f6;
}

.split {
  display: grid;
  grid-template-columns: minmax(260px, 0.78fr) minmax(300px, 1fr);
  gap: clamp(30px, 6vw, 80px);
  align-items: start;
}

.split p {
  color: var(--muted);
  font-size: 18px;
}

.section-heading {
  width: min(700px, 100%);
  margin: 0 auto 42px;
  text-align: center;
}

.section-heading.left {
  margin: 0;
  text-align: left;
}

.section-heading p {
  color: var(--muted);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  min-height: 260px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 1px 0 rgba(10, 24, 61, 0.04);
}

.service-card.large {
  min-height: 300px;
}

.card-index {
  display: inline-flex;
  margin-bottom: 40px;
  color: #2b827b;
  font-size: 12px;
  font-weight: 820;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.service-card p {
  color: var(--muted);
}

.app-panel {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(300px, 0.8fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}

.app-panel p {
  color: var(--muted);
}

.link-list {
  display: grid;
  gap: 12px;
}

.link-list a {
  display: grid;
  gap: 4px;
  padding: 22px;
  border: 1px solid rgba(16, 42, 117, 0.14);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
  transition: transform 160ms ease, border-color 160ms ease;
}

.link-list a:hover,
.link-list a:focus-visible {
  border-color: rgba(16, 42, 117, 0.32);
  transform: translateY(-1px);
}

.link-list span {
  color: #2b827b;
  font-size: 12px;
  font-weight: 820;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.company-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(360px, 1fr);
  gap: clamp(36px, 7vw, 92px);
  align-items: start;
}

.company-table {
  margin: 0;
  border-top: 1px solid var(--line);
}

.company-table div {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.company-table dt {
  color: #526070;
  font-weight: 760;
}

.company-table dd {
  margin: 0;
}

.contact {
  background: var(--lapis-deep);
  color: var(--white);
}

.contact-inner {
  width: min(980px, 100%);
  margin: 0 auto;
}

.contact p {
  color: rgba(255, 255, 255, 0.76);
}

.contact .button {
  margin-top: 16px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(20px, 5vw, 72px);
  background: #081229;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

.site-footer div {
  display: flex;
  gap: 18px;
}

.page-hero {
  padding: clamp(88px, 11vw, 150px) clamp(20px, 5vw, 72px) clamp(60px, 8vw, 100px);
  background:
    linear-gradient(135deg, rgba(238, 247, 246, 0.96), rgba(255, 255, 255, 0.95)),
    url("hero-lapis.png") center / cover;
}

.page-hero h1 {
  margin-bottom: 18px;
  color: var(--lapis-deep);
  font-size: clamp(38px, 5vw, 68px);
}

.page-hero p {
  color: var(--muted);
}

.updated {
  margin-top: 24px;
  font-size: 14px;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.text-link {
  color: var(--lapis);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.policy {
  background: var(--white);
}

.policy h2 {
  margin-top: 42px;
  font-size: 24px;
}

.policy h2:first-child {
  margin-top: 0;
}

.policy p {
  color: var(--muted);
}

@media (max-width: 980px) {
  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .split,
  .app-panel,
  .company-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  :root {
    --header-height: 68px;
  }

  .site-header {
    padding: 0 18px;
  }

  .nav-toggle {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--white);
  }

  .nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--ink);
    transition: transform 180ms ease;
  }

  .nav-toggle span + span {
    margin-top: -12px;
  }

  .site-nav {
    position: absolute;
    top: calc(var(--header-height) - 1px);
    right: 16px;
    left: 16px;
    display: grid;
    gap: 0;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--white);
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 12px;
  }

  .nav-contact {
    border-radius: var(--radius);
  }

  .hero {
    min-height: auto;
    padding-top: 84px;
    padding-bottom: 92px;
  }

  .hero-media::after {
    background:
      linear-gradient(90deg, rgba(7, 13, 34, 0.94), rgba(7, 13, 34, 0.62)),
      linear-gradient(0deg, rgba(7, 13, 34, 0.24), rgba(7, 13, 34, 0.24));
  }

  h1 {
    font-size: clamp(34px, 10.5vw, 46px);
  }

  .hero-actions,
  .site-footer,
  .company-table div {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .service-grid,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    min-height: 220px;
  }

  .company-table div {
    display: block;
  }

  .company-table dt {
    margin-bottom: 6px;
  }

  .site-footer {
    display: grid;
  }
}