:root {
  --navy: #07192e;
  --navy-2: #0d2a49;
  --blue: #1f6f9f;
  --gold: #b99a5e;
  --ink: #142238;
  --muted: #607086;
  --line: #d9e0e8;
  --paper: #f5f7fa;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
  line-height: 1.75;
}

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

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

.global-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 82px;
  padding: 0 48px;
  color: #fff;
  background: linear-gradient(180deg, rgba(7, 25, 46, .86), rgba(7, 25, 46, .48));
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, .16);
}

.brand {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  background: rgba(255, 255, 255, .9);
  border: 1px solid rgba(255, 255, 255, .52);
  box-shadow: 0 12px 26px rgba(0, 0, 0, .13);
  backdrop-filter: blur(6px);
}

.brand-logo-image {
  width: 226px;
  height: auto;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 14px;
}

.nav-cta {
  padding: 10px 18px;
  border: 1px solid rgba(255, 255, 255, .76);
}

.hero {
  position: relative;
  min-height: 760px;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #fff;
  background: var(--navy);
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: center;
  filter: saturate(.88) contrast(1.04);
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(7, 25, 46, .96) 0%, rgba(7, 25, 46, .82) 36%, rgba(7, 25, 46, .26) 70%, rgba(7, 25, 46, .18) 100%),
    linear-gradient(0deg, rgba(7, 25, 46, .92) 0%, rgba(7, 25, 46, .12) 40%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(760px, calc(100% - 96px));
  margin-left: 48px;
  margin-bottom: 96px;
}

.kicker,
.section-label {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(52px, 6.3vw, 88px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 660px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, .84);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 38px;
}

.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 26px;
  font-weight: 800;
}

.primary-btn {
  color: #fff;
  background: var(--blue);
}

.secondary-btn {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .72);
}

.hero-panel {
  position: absolute;
  right: 48px;
  bottom: 48px;
  z-index: 1;
  width: 360px;
  padding: 24px;
  color: #fff;
  background: rgba(7, 25, 46, .72);
  border: 1px solid rgba(255, 255, 255, .2);
  backdrop-filter: blur(10px);
}

.hero-panel span {
  display: block;
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
}

.hero-panel strong {
  display: block;
  margin-top: 8px;
  font-size: 19px;
  line-height: 1.5;
}

.hero-panel p {
  margin: 12px 0 0;
  color: rgba(255, 255, 255, .75);
  font-size: 14px;
}

.intro {
  max-width: 1040px;
  margin: 0 auto;
  padding: 92px 48px 72px;
}

.intro h2,
.feature h2,
.split-message h2,
.strength h2,
.supervision h2,
.contact-band h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(32px, 4vw, 54px);
  line-height: 1.28;
  letter-spacing: 0;
}

.intro p:last-child {
  max-width: 760px;
  margin: 26px 0 0 auto;
  color: var(--muted);
  font-size: 17px;
}

.scope-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  width: min(1180px, calc(100% - 96px));
  margin: 0 auto 76px;
  background: var(--line);
  border: 1px solid var(--line);
}

.scope-band div {
  min-height: 150px;
  padding: 30px 34px;
  background: #fff;
}

.scope-band span {
  display: block;
  margin-bottom: 18px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: .06em;
}

.scope-band strong {
  display: block;
  color: var(--navy);
  font-size: 20px;
  line-height: 1.65;
}

.work-grid {
  display: grid;
  grid-template-columns: 1.08fr .96fr .96fr;
  gap: 1px;
  width: min(1280px, calc(100% - 96px));
  margin: 0 auto 96px;
  background: var(--line);
  border: 1px solid var(--line);
}

.work-card {
  min-height: 290px;
  padding: 42px;
  background: #fff;
}

.work-card span {
  color: var(--gold);
  font-size: 15px;
  font-weight: 900;
}

.work-card h3 {
  margin: 48px 0 14px;
  color: var(--ink);
  font-size: 25px;
  line-height: 1.4;
}

.work-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15.5px;
  font-weight: 500;
}

.primary-card {
  color: #fff;
  background: var(--navy-2);
}

.primary-card h3,
.primary-card p {
  color: #fff;
}

.primary-card p {
  opacity: .78;
}

.feature {
  width: min(1360px, calc(100% - 56px));
  margin: 0 auto;
}

.feature-dark {
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  align-items: stretch;
  color: #fff;
  background: var(--navy);
}

.feature-copy {
  align-self: center;
  padding: 68px 44px;
}

.feature-copy h2 {
  color: #fff;
  font-size: clamp(32px, 2.8vw, 38px);
  line-height: 1.28;
}

.feature-copy p:last-child {
  margin: 24px 0 0;
  color: rgba(255, 255, 255, .76);
  font-size: 17px;
  font-weight: 500;
}

.feature-photo {
  min-height: 520px;
  margin: 0;
}

.feature-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.split-message {
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  gap: 72px;
  align-items: center;
  width: min(1280px, calc(100% - 96px));
  margin: 110px auto;
}

.split-message figure {
  margin: 0;
  min-height: 520px;
  overflow: hidden;
}

.split-message img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.split-message p:last-child {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 17px;
  font-weight: 500;
}

.strength {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 56px;
  width: min(1180px, calc(100% - 96px));
  margin: 0 auto 104px;
  padding-top: 56px;
  border-top: 1px solid var(--line);
}

.strength ul {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.strength li {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  padding: 26px 30px;
  background: #fff;
}

.strength strong {
  color: var(--navy);
  font-size: 18px;
}

.strength span {
  color: var(--muted);
  font-size: 15.5px;
  font-weight: 500;
}

.supervision {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 56px;
  align-items: start;
  width: min(1180px, calc(100% - 96px));
  margin: 0 auto 92px;
  padding: 42px 0 0;
  border-top: 1px solid var(--line);
}

.supervision h2 {
  font-size: clamp(28px, 3.2vw, 42px);
}

.supervision-copy p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 17px;
  font-weight: 500;
}

.supervision-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.supervision-link {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 18px;
  color: #fff;
  background: var(--navy-2);
  font-size: 15px;
  font-weight: 800;
}

.supervision-link:hover {
  background: var(--blue);
}

.contact-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  width: min(1280px, calc(100% - 96px));
  margin: 0 auto;
  padding: 58px 64px;
  color: #fff;
  background:
    linear-gradient(120deg, rgba(7, 25, 46, .98), rgba(13, 42, 73, .9)),
    radial-gradient(circle at 86% 30%, rgba(31, 111, 159, .4), transparent 30%);
}

.contact-band h2 {
  color: #fff;
  font-size: clamp(28px, 3vw, 42px);
}

.contact-note {
  max-width: 640px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, .76);
  font-size: 15px;
}

.contact-band .light {
  flex: 0 0 auto;
  color: var(--navy);
  background: #fff;
}

.contact-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 14px;
}

.contact-actions .primary-btn,
.contact-actions .line-btn {
  width: 210px;
  min-height: 54px;
}

.contact-actions .primary-btn {
  white-space: nowrap;
}

.line-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 22px;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .7);
  font-weight: 800;
}

.line-official {
  padding: 0 14px;
  background: #fff;
}

.line-official img {
  width: auto;
  height: 36px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px 48px;
  color: #748198;
  font-size: 13px;
}

@media (max-width: 980px) {
  .global-header {
    position: absolute;
    display: block;
    padding: 22px 24px;
  }

  .brand {
    padding: 6px 10px;
  }

  .brand-logo-image {
    width: min(250px, calc(100vw - 68px));
  }

  .header-nav {
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 18px;
  }

  .hero {
    min-height: 820px;
  }

  .hero-content {
    width: calc(100% - 48px);
    margin: 190px 24px 230px;
  }

  .hero-panel {
    right: 24px;
    bottom: 28px;
    left: 24px;
    width: auto;
  }

  .hero-actions,
  .contact-band,
  .footer {
    display: block;
  }

  .secondary-btn,
  .contact-band .primary-btn {
    margin-top: 14px;
  }

  .contact-actions {
    display: grid;
    gap: 12px;
    margin-top: 24px;
  }

  .contact-actions .primary-btn,
  .contact-actions .line-btn {
    width: 100%;
  }

  .line-btn {
    margin-top: 0;
  }

  .intro,
  .scope-band,
  .work-grid,
  .split-message,
  .strength,
  .supervision,
  .contact-band {
    width: calc(100% - 40px);
  }

  .scope-band,
  .work-grid,
  .feature-dark,
  .split-message,
  .strength,
  .supervision {
    grid-template-columns: 1fr;
  }

  .intro {
    padding: 76px 20px 56px;
  }

  .feature {
    width: 100%;
  }

  .feature-copy {
    padding: 54px 28px;
  }

  .split-message {
    gap: 42px;
    margin: 72px auto;
  }

  .strength li {
    grid-template-columns: 1fr;
  }

  .contact-band {
    padding: 42px 28px;
  }
}