:root {
  --navy-950: #0a182a;
  --navy-900: #10233f;
  --navy-800: #183454;
  --blue-700: #1769aa;
  --blue-600: #2782c4;
  --blue-100: #e8f2fa;
  --slate-700: #425167;
  --slate-600: #5d6b7e;
  --slate-400: #9aa6b5;
  --slate-200: #dce3ea;
  --slate-100: #edf1f5;
  --off-white: #f7f9fb;
  --white: #ffffff;
  --shadow-sm: 0 10px 30px rgba(16, 35, 63, 0.08);
  --shadow-md: 0 24px 60px rgba(16, 35, 63, 0.12);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --container: 1160px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  color: var(--navy-950);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.025em;
  -webkit-font-smoothing: antialiased;
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

:focus-visible {
  outline: 3px solid rgba(39, 130, 196, 0.48);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 16px;
  color: var(--white);
  background: var(--navy-900);
  border-radius: var(--radius-sm);
  transform: translateY(-160%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(calc(100% - 48px), var(--container));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: 80px;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(16, 35, 63, 0.08);
  backdrop-filter: blur(14px);
}

.header-inner {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: stretch;
  gap: 12px;
  min-height: 43px;
}

.brand-rule {
  display: block;
  width: 4px;
  border-radius: 4px;
  background: var(--blue-700);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.05;
}

.brand-ja {
  color: var(--slate-600);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.brand-name {
  margin-top: 4px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 25px;
  letter-spacing: 0.01em;
}

.brand-eyebrow {
  text-transform: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.site-nav a {
  position: relative;
  padding: 10px 0;
}

.site-nav a:not(.nav-contact)::after {
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--blue-700);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}

.site-nav a:not(.nav-contact):hover::after {
  transform: scaleX(1);
}

.nav-contact {
  padding: 10px 18px !important;
  color: var(--white);
  background: var(--navy-900);
  border-radius: 999px;
  transition: background 0.2s ease, transform 0.2s ease;
}

.nav-contact:hover {
  background: var(--blue-700);
  transform: translateY(-1px);
}

.menu-button {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  color: var(--navy-900);
  background: transparent;
  border: 0;
  cursor: pointer;
}

.menu-label {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.menu-lines {
  display: grid;
  gap: 5px;
  width: 24px;
}

.menu-lines span {
  height: 2px;
  background: currentColor;
  transition: transform 0.2s ease;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 690px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(115deg, rgba(255, 255, 255, 0.98) 0 52%, rgba(232, 242, 250, 0.85) 52% 100%);
}

.hero::after {
  position: absolute;
  right: -11vw;
  bottom: -21vw;
  width: 56vw;
  height: 56vw;
  content: "";
  background: var(--navy-900);
  border-radius: 18%;
  opacity: 0.045;
  transform: rotate(45deg);
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.42;
  background-image:
    linear-gradient(rgba(23, 105, 170, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 105, 170, 0.06) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to right, transparent 0 40%, #000 72%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr);
  gap: 86px;
  align-items: center;
  padding-block: 100px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--blue-700);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.2em;
}

.hero h1,
.section h2,
.contact-section h2 {
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", "Hiragino Mincho Pro", Georgia, serif;
  font-weight: 600;
  letter-spacing: 0.035em;
}

.hero h1 {
  max-width: 720px;
  font-size: clamp(44px, 5.2vw, 72px);
  line-height: 1.34;
}

.hero-lead {
  max-width: 670px;
  margin: 30px 0 0;
  color: var(--slate-700);
  font-size: 18px;
  line-height: 2;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  min-height: 56px;
  padding: 13px 28px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.07em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--white);
  background: var(--navy-900);
  box-shadow: 0 12px 28px rgba(16, 35, 63, 0.2);
}

.button-primary:hover {
  background: var(--blue-700);
  box-shadow: 0 16px 34px rgba(23, 105, 170, 0.25);
}

.text-link {
  color: var(--navy-900);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.07em;
}

.text-link span {
  display: inline-block;
  margin-left: 8px;
  transition: transform 0.2s ease;
}

.text-link:hover span {
  transform: translateX(4px);
}

.hero-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.fact-card {
  min-height: 170px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 28px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(16, 35, 63, 0.1);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
}

.fact-card-primary {
  grid-row: span 2;
  min-height: 356px;
  color: var(--white);
  background: var(--navy-900);
  border-color: transparent;
  box-shadow: var(--shadow-md);
}

.fact-label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.18em;
  opacity: 0.68;
}

.fact-card strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 56px;
  font-weight: 400;
  line-height: 1;
}

.fact-card-primary strong {
  font-size: 88px;
}

.fact-card > span:last-child {
  color: var(--slate-600);
  font-size: 13px;
  font-weight: 700;
}

.fact-card-primary > span:last-child {
  color: rgba(255, 255, 255, 0.72);
}

.section {
  padding-block: 120px;
}

.business-section {
  background: var(--white);
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: end;
  margin-bottom: 58px;
}

.section h2,
.contact-section h2 {
  font-size: clamp(34px, 4vw, 52px);
  line-height: 1.35;
}

.section-heading > p,
.company-intro > p:last-child {
  max-width: 540px;
  margin: 0;
  color: var(--slate-600);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.business-card {
  overflow: hidden;
  display: grid;
  grid-template-columns: 42% 58%;
  min-height: 335px;
  background: var(--off-white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.business-card:hover {
  border-color: rgba(23, 105, 170, 0.32);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.business-image {
  min-height: 100%;
  overflow: hidden;
  background: var(--slate-100);
}

.business-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.82) contrast(0.98);
  transition: transform 0.5s ease, filter 0.4s ease;
}

.business-card:hover .business-image img {
  filter: saturate(1) contrast(1);
  transform: scale(1.025);
}

.business-body {
  display: flex;
  flex-direction: column;
  padding: 34px 32px;
}

.business-number {
  color: var(--blue-700);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.business-card h3 {
  margin: 22px 0 12px;
  font-size: 20px;
  line-height: 1.55;
}

.business-card p {
  margin: 0;
  color: var(--slate-600);
  font-size: 14px;
  line-height: 1.9;
}

.principle-section {
  position: relative;
  overflow: hidden;
  color: var(--white);
  background: var(--navy-900);
}

.principle-section::before {
  position: absolute;
  inset: 0;
  content: "";
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-size: 80px 80px;
}

.principle-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.3fr);
  gap: 92px;
  align-items: center;
}

.principle-mark {
  width: min(100%, 330px);
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.92);
  background: linear-gradient(135deg, rgba(39, 130, 196, 0.92), rgba(23, 105, 170, 0.18));
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 38% 10% 38% 10%;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(48px, 5.5vw, 76px);
  line-height: 0.9;
  letter-spacing: -0.06em;
  text-align: center;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.22);
}

.principle-mark span {
  display: block;
}

.principle-mark .principle-inc {
  margin-top: 0.06em;
  font-size: 0.82em;
  letter-spacing: -0.03em;
}

.principle-copy {
  max-width: 710px;
}

.principle-copy .eyebrow,
.eyebrow-light {
  color: #86c5ed;
}

.principle-copy h2 {
  font-size: clamp(36px, 4.5vw, 58px);
}

.principle-copy > p:last-child {
  max-width: 650px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 17px;
  line-height: 2;
}

.company-section {
  background: var(--off-white);
}

.company-layout {
  display: grid;
  grid-template-columns: minmax(240px, 0.7fr) minmax(0, 1.3fr);
  gap: 92px;
  align-items: start;
}

.company-intro {
  position: sticky;
  top: 130px;
}

.company-intro > p:last-child {
  margin-top: 26px;
}

.company-list {
  margin: 0;
  background: var(--white);
  border-top: 3px solid var(--navy-900);
  box-shadow: var(--shadow-sm);
}

.company-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 26px;
  padding: 24px 30px;
  border-bottom: 1px solid var(--slate-200);
}

.company-row:last-child {
  border-bottom: 0;
}

.company-row dt,
.company-row dd {
  margin: 0;
}

.company-row dt {
  color: var(--slate-600);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.company-row dt span {
  display: block;
  font-size: 10px;
  font-weight: 600;
}

.company-row dd {
  font-weight: 600;
}

.address-image {
  width: 416px;
  max-width: 100%;
  height: auto;
}

.contact-section {
  padding-block: 94px;
  color: var(--white);
  background: var(--blue-700);
}

.contact-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 80px;
}

.contact-section p:last-child {
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.78);
}

.button-light {
  flex: 0 0 auto;
  min-width: 280px;
  color: var(--navy-900);
  background: var(--white);
  box-shadow: 0 16px 36px rgba(10, 24, 42, 0.2);
}

.button-light:hover {
  background: var(--blue-100);
  box-shadow: 0 20px 42px rgba(10, 24, 42, 0.26);
}

.site-footer {
  padding-block: 48px;
  color: rgba(255, 255, 255, 0.7);
  background: var(--navy-950);
}

.footer-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}

.footer-brand {
  color: var(--white);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 25px;
}

.footer-since {
  margin-top: 4px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.site-footer p {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.07em;
}

@media (max-width: 980px) {
  .hero {
    min-height: auto;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 58px;
    padding-block: 84px;
  }

  .hero-copy {
    max-width: 760px;
  }

  .hero-facts {
    max-width: 720px;
  }

  .fact-card-primary {
    min-height: 300px;
  }

  .business-card {
    grid-template-columns: 1fr;
  }

  .business-image {
    aspect-ratio: 16 / 10;
  }

  .principle-inner,
  .company-layout {
    gap: 56px;
  }
}

@media (max-width: 760px) {
  html {
    scroll-padding-top: 76px;
  }

  .container {
    width: min(calc(100% - 32px), var(--container));
  }

  .site-header,
  .header-inner {
    min-height: 70px;
  }

  .menu-button {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: 70px;
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    padding: 8px 16px 20px;
    background: var(--white);
    border-bottom: 1px solid var(--slate-200);
    box-shadow: var(--shadow-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 15px 8px;
    border-bottom: 1px solid var(--slate-100);
  }

  .site-nav a:not(.nav-contact)::after {
    display: none;
  }

  .nav-contact {
    margin-top: 10px;
    text-align: center;
    border-bottom: 0 !important;
  }

  .menu-button[aria-expanded="true"] .menu-lines span:first-child {
    transform: translateY(3.5px) rotate(45deg);
  }

  .menu-button[aria-expanded="true"] .menu-lines span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
  }

  .hero {
    background: linear-gradient(160deg, var(--white) 0 68%, var(--blue-100) 68% 100%);
  }

  .hero-inner {
    padding-block: 70px;
  }

  .hero h1 {
    font-size: clamp(38px, 11vw, 54px);
  }

  .hero-lead {
    font-size: 16px;
    line-height: 1.9;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 20px;
  }

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

  .fact-card,
  .fact-card-primary {
    min-height: 170px;
    padding: 22px;
  }

  .fact-card-primary {
    grid-column: span 2;
    grid-row: auto;
    min-height: 240px;
  }

  .fact-card strong {
    font-size: 44px;
  }

  .fact-card-primary strong {
    font-size: 68px;
  }

  .section {
    padding-block: 84px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 40px;
  }

  .business-grid {
    grid-template-columns: 1fr;
  }

  .business-card {
    min-height: 0;
  }

  .principle-inner,
  .company-layout {
    grid-template-columns: 1fr;
  }

  .principle-mark {
    width: 100%;
  }

  .company-intro {
    position: static;
  }

  .company-row {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 20px;
  }

  .company-row dt span {
    display: inline;
  }

  .company-row-address dd {
    padding-top: 4px;
  }

  .contact-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 38px;
  }

  .button-light {
    width: 100%;
    min-width: 0;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 420px) {
  .brand-name {
    font-size: 22px;
  }

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

  .fact-card-primary {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}