:root {
  --ink: #102a43;
  --ink-soft: #334e68;
  --blue: #1769e0;
  --blue-bright: #2d7ff0;
  --paper: #f7f7f3;
  --white: #ffffff;
  --mist: #e9eef3;
  --line: rgba(16, 42, 67, 0.16);
  --muted: #708090;
  --shell: min(1180px, calc(100% - 80px));
  --header-height: 84px;
  --ease: cubic-bezier(0.2, 0.75, 0.25, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-height); }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Yu Gothic", "YuGothic", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.shell { width: var(--shell); margin-inline: auto; }
.lang-en { display: none !important; }
body[data-lang="en"] .lang-ja { display: none !important; }
body[data-lang="en"] .lang-en { display: revert !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; top: 12px; left: 12px; z-index: 1000; padding: 10px 16px;
  color: var(--white); background: var(--ink); transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed; inset: 0 0 auto; z-index: 100; height: var(--header-height);
  color: var(--white); transition: background .3s ease, color .3s ease, box-shadow .3s ease;
}
.site-header.is-scrolled, .site-header.menu-active {
  color: var(--ink); background: rgba(247, 247, 243, .96); box-shadow: 0 1px 0 var(--line);
  backdrop-filter: blur(14px);
}
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 12px; line-height: 1; }
.brand-mark { position: relative; width: 29px; height: 29px; display: inline-block; }
.brand-mark i { position: absolute; top: 2px; width: 8px; height: 25px; background: currentColor; transform: skew(-22deg); }
.brand-mark i:first-child { left: 5px; }
.brand-mark i:last-child { right: 5px; transform: skew(22deg); }
.brand-name { font-family: Arial, sans-serif; font-weight: 700; font-size: 17px; letter-spacing: .16em; }
.brand-name small { display: block; margin-top: 5px; font-size: 8px; font-weight: 600; letter-spacing: .42em; }
.desktop-nav { display: flex; align-items: center; gap: 34px; margin-left: auto; margin-right: 42px; }
.desktop-nav a { position: relative; font-size: 13px; font-weight: 600; letter-spacing: .08em; }
.desktop-nav a::after { content: ""; position: absolute; right: 0; bottom: -7px; left: 0; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .25s var(--ease); }
.desktop-nav a:hover::after, .desktop-nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.header-actions { display: flex; align-items: center; gap: 26px; }
.language-switch { display: flex; align-items: center; gap: 7px; font-family: Arial, sans-serif; font-size: 11px; letter-spacing: .12em; }
.language-switch button { padding: 4px 1px; border: 0; color: inherit; background: transparent; cursor: pointer; opacity: .45; }
.language-switch button[aria-pressed="true"] { opacity: 1; font-weight: 700; }
.menu-button { display: none; width: 38px; height: 38px; padding: 10px 5px; border: 0; color: inherit; background: transparent; cursor: pointer; }
.menu-button > span[aria-hidden] { display: block; width: 27px; height: 1px; margin: 5px 0; background: currentColor; transition: transform .25s ease; }
.menu-button[aria-expanded="true"] > span[aria-hidden]:nth-last-child(2) { transform: translateY(3px) rotate(45deg); }
.menu-button[aria-expanded="true"] > span[aria-hidden]:last-child { transform: translateY(-3px) rotate(-45deg); }
.mobile-nav { position: fixed; inset: var(--header-height) 0 0; padding: 28px max(30px, calc((100vw - 1180px) / 2)); color: var(--ink); background: var(--paper); }
.mobile-nav a { display: grid; grid-template-columns: 54px 1fr; align-items: center; padding: 19px 0; border-bottom: 1px solid var(--line); font-size: 20px; font-weight: 600; }
.mobile-nav a > span:first-child { color: var(--blue); font: 11px Arial, sans-serif; letter-spacing: .1em; }

.hero { position: relative; min-height: 760px; height: 100svh; overflow: hidden; color: var(--white); background: var(--ink); }
.hero::after { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 80% 40%, rgba(45, 127, 240, .23), transparent 35%); pointer-events: none; }
.hero-grid { position: absolute; inset: 0; opacity: .13; background-image: linear-gradient(rgba(255,255,255,.35) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.35) 1px, transparent 1px); background-size: 88px 88px; mask-image: linear-gradient(to right, transparent 20%, black); }
.hero-orbit { position: absolute; border: 1px solid rgba(255,255,255,.14); border-radius: 50%; }
.hero-orbit-one { width: 720px; height: 720px; right: -130px; top: 8%; }
.hero-orbit-two { width: 490px; height: 490px; right: -15px; top: 24%; border-color: rgba(45,127,240,.5); }
.hero-inner { position: relative; z-index: 2; height: 100%; display: grid; grid-template-columns: 1fr .5fr; align-items: center; padding-top: 40px; }
.eyebrow { display: flex; align-items: center; gap: 12px; margin: 0 0 32px; color: rgba(255,255,255,.66); font: 10px/1.2 Arial, sans-serif; letter-spacing: .22em; }
.eyebrow i { width: 34px; height: 1px; background: var(--blue-bright); }
.hero h1 { margin: 0; font-size: clamp(52px, 6.2vw, 88px); font-weight: 500; line-height: 1.27; letter-spacing: .02em; }
.hero h1 em { color: #6da9ff; font-style: normal; }
body[data-lang="en"] .hero h1 { font-family: Arial, sans-serif; font-weight: 600; font-size: clamp(52px, 6.5vw, 92px); line-height: 1.03; letter-spacing: -.04em; }
.hero-lead { margin: 30px 0 34px; color: rgba(255,255,255,.72); font-size: 15px; letter-spacing: .08em; }
.text-link { display: inline-flex; align-items: center; gap: 22px; padding-bottom: 8px; border-bottom: 1px solid rgba(255,255,255,.4); font-size: 13px; font-weight: 600; letter-spacing: .08em; }
.text-link i { color: #6da9ff; font: normal 18px Arial, sans-serif; transition: transform .2s ease; }
.text-link:hover i, .text-link:focus-visible i { transform: translateX(5px); }
.hero-signature { position: relative; z-index: 1; justify-self: end; display: flex; flex-direction: column; align-items: center; margin-top: 90px; }
.signature-v { color: rgba(255,255,255,.09); font: 300 clamp(210px, 27vw, 400px)/.7 Arial, sans-serif; letter-spacing: -.15em; }
.signature-line { width: 1px; height: 90px; margin-top: -18px; background: linear-gradient(to bottom, var(--blue-bright), transparent); }
.hero-signature small { margin-top: 14px; color: rgba(255,255,255,.42); font: 8px Arial, sans-serif; letter-spacing: .35em; }
.hero-footer { position: absolute; z-index: 3; right: 0; bottom: 24px; left: 0; display: flex; align-items: center; gap: 16px; color: rgba(255,255,255,.42); font: 9px Arial, sans-serif; letter-spacing: .25em; }
.hero-footer i { width: 70px; height: 1px; background: rgba(255,255,255,.2); }

.section { position: relative; padding: 150px 0; }
.section-grid { display: grid; grid-template-columns: minmax(230px, .75fr) minmax(0, 1.6fr); gap: 110px; }
.section-grid.compact { align-items: end; }
.section-heading { position: relative; }
.section-index { position: absolute; top: 1px; left: -50px; margin: 0; color: var(--blue); font: 10px Arial, sans-serif; letter-spacing: .1em; }
.kicker { margin: 0 0 28px; color: var(--blue); font: 700 11px Arial, sans-serif; letter-spacing: .25em; }
.section h2 { margin: 0; font-size: clamp(34px, 4vw, 52px); font-weight: 500; line-height: 1.45; letter-spacing: .03em; }
body[data-lang="en"] .section h2 { font-family: Arial, sans-serif; font-weight: 600; line-height: 1.05; letter-spacing: -.025em; }
.section-body { padding-top: 54px; }
.statement { margin: 0 0 42px; font-size: clamp(23px, 2.5vw, 34px); font-weight: 500; line-height: 1.7; letter-spacing: .04em; }
.body-copy { max-width: 690px; color: var(--ink-soft); font-size: 15px; }
.body-copy p { margin: 0 0 16px; }
.principles { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 58px; border-top: 1px solid var(--line); }
.principles div { min-height: 120px; padding: 22px 20px; border-right: 1px solid var(--line); }
.principles div:last-child { border-right: 0; }
.principles span { display: block; margin-bottom: 18px; color: var(--blue); font: 10px Arial, sans-serif; }
.principles strong { font-size: 14px; font-weight: 600; letter-spacing: .08em; }

.business { color: var(--white); background: #0b2136; }
.business .section-intro { max-width: 600px; color: rgba(255,255,255,.62); font-size: 14px; }
.business-list { display: grid; grid-template-columns: repeat(2, 1fr); margin-top: 75px; border-top: 1px solid rgba(255,255,255,.18); border-bottom: 1px solid rgba(255,255,255,.18); }
.business-card { position: relative; min-height: 380px; padding: 28px 40px 38px; border-right: 1px solid rgba(255,255,255,.18); border-bottom: 1px solid rgba(255,255,255,.18); transition: background .3s ease; }
.business-card:nth-child(2n) { border-right: 0; }
.business-card:nth-last-child(-n+2) { border-bottom: 0; }
.business-card:hover { background: rgba(255,255,255,.035); }
.card-number { margin: 0; color: rgba(255,255,255,.38); font: 10px Arial, sans-serif; }
.card-symbol { position: relative; width: 92px; height: 92px; margin: 38px auto 45px; border: 1px solid rgba(109,169,255,.55); border-radius: 50%; }
.card-symbol i { position: absolute; top: 45px; left: -16px; width: 122px; height: 1px; background: rgba(109,169,255,.55); transform: rotate(45deg); }
.card-symbol i:last-child { transform: rotate(-45deg); }
.symbol-two { border-radius: 0; transform: rotate(45deg); }
.symbol-two i { top: 45px; left: 13px; width: 66px; transform: rotate(0); }
.symbol-two i:last-child { transform: rotate(90deg); }
.symbol-three { border-radius: 50% 50% 0 50%; transform: rotate(-45deg); }
.symbol-three i { top: 45px; left: 12px; width: 67px; transform: rotate(45deg); }
.symbol-three i:last-child { transform: rotate(-45deg); }
.symbol-four { border-radius: 50% 0 50% 50%; transform: rotate(45deg); }
.symbol-four i { top: 44px; left: 13px; width: 65px; transform: rotate(0); }
.symbol-four i:last-child { transform: rotate(90deg); }
.card-label { margin: 0 0 9px; color: #6da9ff; font: 9px Arial, sans-serif; letter-spacing: .2em; }
.business-card h3 { margin: 0 0 10px; font-size: 21px; font-weight: 500; letter-spacing: .06em; }
.business-points { margin: 0; padding-left: 1.25em; color: rgba(255,255,255,.56); font-size: 12px; line-height: 1.75; }
.business-points li + li { margin-top: 4px; }

.company { background: var(--white); }
.company-table { padding-top: 42px; }
.company-table dl { margin: 0; border-top: 1px solid var(--ink); }
.company-table dl > div { display: grid; grid-template-columns: 180px 1fr; padding: 23px 8px; border-bottom: 1px solid var(--line); }
.company-table dt { font-size: 13px; font-weight: 600; letter-spacing: .08em; }
.company-table dd { min-width: 0; margin: 0; color: var(--ink-soft); font-size: 14px; overflow-wrap: anywhere; }
.company-link { padding-bottom: 2px; border-bottom: 1px solid rgba(16,42,67,.35); transition: color .2s ease, border-color .2s ease; }
.company-link:hover, .company-link:focus-visible { color: var(--blue); border-color: var(--blue); }

.contact { overflow: hidden; color: var(--white); background: var(--blue); }
.contact::before { content: "CONTACT"; position: absolute; right: -24px; bottom: -95px; color: rgba(255,255,255,.055); font: 700 clamp(110px, 20vw, 280px)/1 Arial, sans-serif; letter-spacing: -.06em; }
.contact-accent { position: absolute; top: -200px; right: 8%; width: 600px; height: 600px; border: 1px solid rgba(255,255,255,.14); border-radius: 50%; }
.contact-accent::after { content: ""; position: absolute; inset: 100px; border: 1px solid rgba(255,255,255,.14); border-radius: 50%; }
.contact .kicker, .contact .section-index { color: rgba(255,255,255,.62); }
.contact-content { position: relative; padding-top: 37px; }
.contact-lead { margin: 0 0 25px; font-size: clamp(25px, 2.8vw, 38px); font-weight: 500; line-height: 1.55; letter-spacing: .03em; }
.contact-note { max-width: 640px; margin: 0 0 36px; color: rgba(255,255,255,.72); font-size: 13px; }
.contact-button { display: flex; align-items: center; justify-content: space-between; width: min(100%, 520px); padding: 20px 24px; border: 1px solid rgba(255,255,255,.55); color: var(--white); background: rgba(255,255,255,.07); font-size: 13px; letter-spacing: .05em; transition: background .25s ease, border-color .25s ease; }
.contact-button:hover, .contact-button:focus-visible { background: rgba(255,255,255,.16); border-color: var(--white); }
.contact-button i { font: normal 18px Arial, sans-serif; transition: transform .2s ease; }
.contact-button:hover i, .contact-button:focus-visible i { transform: translateX(5px); }

.site-footer { padding: 78px 0 28px; color: rgba(255,255,255,.85); background: #081a2b; }
.brand-footer { color: var(--white); }
.footer-main { display: flex; justify-content: space-between; padding-bottom: 70px; }
.footer-main > div > p { margin: 24px 0 0; color: rgba(255,255,255,.4); font-size: 11px; letter-spacing: .08em; }
.footer-nav { display: grid; grid-template-columns: repeat(2, minmax(120px, 1fr)); gap: 15px 55px; align-content: start; font-size: 12px; }
.footer-nav a { color: rgba(255,255,255,.62); transition: color .2s ease; }
.footer-nav a:hover, .footer-nav a:focus-visible { color: var(--white); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.35); font: 9px Arial, sans-serif; letter-spacing: .16em; }
.footer-bottom p { margin: 0; }
.footer-bottom a { display: flex; align-items: center; gap: 14px; }
.footer-bottom i { font-style: normal; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .75s var(--ease), transform .75s var(--ease); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
:focus-visible { outline: 2px solid #6da9ff; outline-offset: 4px; }

@media (max-width: 960px) {
  :root { --shell: min(100% - 48px, 780px); }
  .desktop-nav { display: none; }
  .menu-button { display: block; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-signature { position: absolute; right: -30px; opacity: .5; }
  .hero-copy { position: relative; z-index: 2; }
  .section { padding: 110px 0; }
  .section-grid { grid-template-columns: 1fr; gap: 48px; }
  .section-body, .company-table, .contact-content { padding-top: 0; }
  .section-index { position: static; margin-bottom: 15px; }
  .kicker { margin-bottom: 18px; }
  .principles { grid-template-columns: repeat(2, 1fr); }
  .principles div:nth-child(2n) { border-right: 0; }
  .principles div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .business-list { grid-template-columns: 1fr; }
  .business-card { display: grid; grid-template-columns: 50px 150px 1fr; align-items: center; min-height: 230px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.18); }
  .business-card:nth-last-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.18); }
  .business-card:last-child { border-bottom: 0; }
  .card-symbol { margin: 0; transform: scale(.72); }
  .symbol-two { transform: rotate(45deg) scale(.72); }
  .symbol-three { transform: rotate(-45deg) scale(.72); }
  .symbol-four { transform: rotate(45deg) scale(.72); }
}

@media (max-width: 640px) {
  :root { --shell: calc(100% - 40px); --header-height: 70px; }
  body { font-size: 15px; }
  .header-actions { gap: 16px; }
  .brand-name { font-size: 14px; }
  .brand-mark { transform: scale(.85); transform-origin: left center; margin-right: -3px; }
  .language-switch { gap: 5px; font-size: 10px; }
  .hero { min-height: 680px; }
  .hero-grid { background-size: 60px 60px; }
  .hero-orbit-one { width: 470px; height: 470px; right: -270px; top: 19%; }
  .hero-orbit-two { width: 320px; height: 320px; right: -170px; top: 31%; }
  .hero-inner { padding-top: 38px; }
  .eyebrow { margin-bottom: 24px; font-size: 8px; }
  .hero h1 { font-size: clamp(43px, 13vw, 62px); line-height: 1.34; }
  body[data-lang="en"] .hero h1 { font-size: clamp(43px, 13vw, 61px); line-height: 1.07; }
  .hero-lead { margin: 24px 0 30px; font-size: 13px; line-height: 1.8; }
  .desktop-only { display: none; }
  .signature-v { font-size: 220px; }
  .hero-signature { right: -12px; bottom: 150px; opacity: .35; }
  .hero-footer { bottom: 18px; }
  .section { padding: 84px 0; }
  .section-grid { gap: 37px; }
  .section h2 { font-size: 35px; }
  .statement { margin-bottom: 30px; font-size: 23px; }
  .statement br { display: none; }
  .principles { grid-template-columns: 1fr; margin-top: 40px; }
  .principles div { display: grid; grid-template-columns: 46px 1fr; align-items: center; min-height: auto; padding: 18px 4px; border-right: 0; border-bottom: 1px solid var(--line); }
  .principles div:last-child { border-bottom: 0; }
  .principles span { margin: 0; }
  .business-list { margin-top: 48px; }
  .business-card { grid-template-columns: 38px 90px 1fr; min-height: 190px; padding: 22px 4px; }
  .card-symbol { margin-left: -6px; transform: scale(.55); }
  .symbol-two { transform: rotate(45deg) scale(.55); }
  .symbol-three { transform: rotate(-45deg) scale(.55); }
  .symbol-four { transform: rotate(45deg) scale(.55); }
  .business-card h3 { font-size: 17px; }
  .business-points { font-size: 11px; }
  .company-table dl > div { grid-template-columns: 105px 1fr; gap: 15px; padding: 19px 3px; }
  .company-table dt, .company-table dd { font-size: 12px; }
  .contact::before { bottom: -35px; font-size: 90px; }
  .contact-lead { font-size: 25px; }
  .contact-lead br { display: none; }
  .footer-main { display: block; padding-bottom: 50px; }
  .footer-nav { margin-top: 48px; gap: 13px 30px; }
  .footer-bottom { line-height: 1.6; }
  .footer-bottom a { max-width: 120px; justify-content: flex-end; text-align: right; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}