:root {
  --ink: #102f35;
  --ink-2: #173d43;
  --paper: #f4f0e7;
  --paper-2: #ece5d8;
  --white: #fffdf8;
  --accent: #c8583a;
  --gold: #bda26b;
  --muted: #65767a;
  --line: rgba(16, 47, 53, .16);
  --shell: min(1180px, calc(100% - 48px));
  --serif: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", serif;
  --sans: "Yu Gothic", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); font-size: 16px; line-height: 1.8; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.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: -60px; left: 16px; z-index: 999; padding: 10px 16px; background: var(--white); color: var(--ink); transition: top .2s; }
.skip-link:focus { top: 12px; }
.section-shell { width: var(--shell); margin-inline: auto; }
.section-pad { padding: 120px 0; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 50; border-bottom: 1px solid transparent; transition: background .3s, border-color .3s, color .3s; color: var(--white); }
.site-header.is-scrolled { color: var(--ink); background: rgba(244, 240, 231, .94); border-color: var(--line); backdrop-filter: blur(12px); }
.header-inner { width: min(1320px, calc(100% - 48px)); height: 88px; margin-inline: auto; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 12px; line-height: 1; }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid currentColor; font-family: Georgia, serif; font-size: 22px; }
.brand-text { display: grid; gap: 4px; }
.brand-text strong { letter-spacing: .24em; font-size: 16px; }
.brand-text small { letter-spacing: .19em; font-size: 9px; opacity: .78; }
.global-nav { display: flex; align-items: center; gap: 30px; font-size: 13px; font-weight: 600; letter-spacing: .07em; }
.global-nav a:not(.nav-contact) { position: relative; }
.global-nav a:not(.nav-contact)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -8px; height: 1px; background: currentColor; transition: right .25s; }
.global-nav a:hover::after, .global-nav a:focus-visible::after { right: 0; }
.nav-contact { padding: 12px 20px; border: 1px solid currentColor; transition: background .2s, color .2s; }
.nav-contact:hover, .nav-contact:focus-visible { background: var(--white); color: var(--ink); }
.is-scrolled .nav-contact:hover, .is-scrolled .nav-contact:focus-visible { background: var(--ink); color: var(--white); }
.menu-button { display: none; width: 46px; height: 46px; padding: 12px; border: 0; color: inherit; background: transparent; }
.menu-button > span:not(.sr-only) { display: block; height: 1px; margin: 5px 0; background: currentColor; transition: transform .25s, opacity .2s; }

.hero { position: relative; min-height: 920px; overflow: hidden; color: var(--white); background: var(--ink); }
.hero-slides, .hero-slide { position: absolute; inset: 0; }
.hero-slide { opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .8s ease, visibility .8s ease; }
.hero-slide.is-active { opacity: 1; visibility: visible; pointer-events: auto; z-index: 1; }
.hero-slide > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; transform: scale(1.025); transition: transform 7s ease; }
.hero-slide.is-active > img { transform: scale(1); }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(9,34,39,.97) 0%, rgba(9,34,39,.87) 36%, rgba(9,34,39,.38) 62%, rgba(9,34,39,.08) 100%), linear-gradient(0deg, rgba(8,30,34,.76) 0%, transparent 37%); }
.hero-shade::after { content: ""; position: absolute; inset: 0; opacity: .11; background-image: linear-gradient(rgba(255,255,255,.2) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.2) 1px, transparent 1px); background-size: 80px 80px; mask-image: linear-gradient(90deg, #000, transparent 66%); }
.hero-inner { position: relative; z-index: 2; width: var(--shell); min-height: 920px; margin-inline: auto; padding: 205px 0 170px; }
.hero-copy { width: 62%; transform: translateY(16px); opacity: 0; transition: transform .7s .18s ease, opacity .7s .18s ease; }
.hero-slide.is-active .hero-copy { transform: none; opacity: 1; }
.eyebrow, .section-kicker { display: flex; align-items: center; gap: 13px; margin: 0 0 24px; color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: .24em; }
.eyebrow i { width: 44px; height: 1px; background: currentColor; }
.hero h1 { margin: 0; font-family: var(--serif); font-size: clamp(54px, 6.2vw, 88px); line-height: 1.32; font-weight: 500; letter-spacing: .04em; }
.hero h1 em { color: #e8c89b; font-style: normal; }
.hero-lead { margin: 34px 0 0; color: rgba(255,255,255,.7); font-size: 17px; line-height: 2; letter-spacing: .04em; }
.hero-actions { display: flex; align-items: center; gap: 34px; margin-top: 42px; }
.button { min-height: 58px; display: inline-flex; align-items: center; justify-content: space-between; gap: 36px; padding: 0 22px; font-size: 13px; font-weight: 700; letter-spacing: .08em; transition: transform .2s, background .2s, color .2s; }
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button-primary { background: var(--accent); color: var(--white); }
.button-primary:hover, .button-primary:focus-visible { background: #d26647; }
.text-link { display: inline-flex; gap: 22px; align-items: center; font-size: 13px; font-weight: 700; letter-spacing: .08em; }
.text-link span { transition: transform .2s; }
.text-link:hover span, .text-link:focus-visible span { transform: translateX(5px); }
.text-link.dark { color: var(--ink); }
.carousel-arrow { position: absolute; z-index: 8; top: 49%; width: 52px; height: 52px; display: grid; place-items: center; padding: 0; border: 1px solid rgba(255,255,255,.34); border-radius: 50%; color: var(--white); background: rgba(8,30,34,.2); backdrop-filter: blur(8px); cursor: pointer; transition: color .2s, background .2s, transform .2s; }
.carousel-arrow:hover, .carousel-arrow:focus-visible { color: var(--ink); background: var(--white); transform: scale(1.06); }
.carousel-prev { left: max(18px, calc((100vw - 1380px) / 2)); }
.carousel-next { right: max(18px, calc((100vw - 1380px) / 2)); }
.carousel-dots { position: absolute; z-index: 8; left: 50%; bottom: 148px; display: flex; align-items: center; gap: 11px; transform: translateX(-50%); }
.carousel-dot { width: 9px; height: 9px; padding: 0; border: 1px solid rgba(255,255,255,.72); border-radius: 999px; background: rgba(255,255,255,.28); cursor: pointer; transition: width .25s, background .25s, opacity .25s; }
.carousel-dot:hover, .carousel-dot:focus-visible { background: rgba(255,255,255,.72); }
.carousel-dot.is-active { width: 30px; background: var(--white); }
.hero-facts { position: absolute; z-index: 7; left: 50%; bottom: 0; width: var(--shell); display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; border-top: 1px solid rgba(255,255,255,.24); transform: translateX(-50%); }
.hero-facts div { display: flex; align-items: center; gap: 20px; min-height: 115px; padding: 20px 38px; border-right: 1px solid rgba(255,255,255,.18); }
.hero-facts div:first-child { padding-left: 0; }.hero-facts div:last-child { border: 0; }
.hero-facts dt { color: var(--accent); font-family: Georgia, serif; font-size: 13px; }
.hero-facts dd { margin: 0; color: rgba(255,255,255,.75); font-size: 12px; line-height: 1.7; letter-spacing: .08em; }

.intro { background: var(--paper); }
.intro-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; align-items: start; }
.intro h2, .section-heading h2, .network h2, .about h2, .contact h2 { margin: 0; font-family: var(--serif); font-size: clamp(38px, 4vw, 58px); line-height: 1.45; font-weight: 500; letter-spacing: .04em; }
.intro-copy { padding-top: 42px; border-top: 1px solid var(--line); }
.intro-copy > p { margin: 0 0 34px; color: #41585c; line-height: 2.1; }

.services { background: var(--white); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 70px; margin-bottom: 65px; }
.section-heading > p { max-width: 430px; margin: 0 0 8px; color: var(--muted); }
.section-heading.compact { align-items: center; }
.service-list { border-top: 1px solid var(--line); }
.service-card { display: grid; grid-template-columns: 70px 125px 1fr; gap: 24px; padding: 52px 0; border-bottom: 1px solid var(--line); }
.service-number { color: var(--accent); font-family: Georgia, serif; font-size: 12px; }
.service-icon { width: 78px; height: 78px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; font-family: Georgia, serif; font-size: 23px; transition: color .25s, background .25s, transform .25s; }
.service-card:hover .service-icon { color: var(--white); background: var(--ink); transform: rotate(-8deg); }
.service-en { margin: 0 0 8px; color: var(--gold); font-size: 10px; letter-spacing: .2em; }
.service-card h3 { margin: 0 0 17px; font-family: var(--serif); font-size: 27px; font-weight: 500; }
.service-card p:not(.service-en) { max-width: 700px; margin: 0; color: var(--muted); }
.service-card ul { display: flex; flex-wrap: wrap; gap: 10px 28px; margin: 22px 0 0; padding: 0; list-style: none; font-size: 12px; font-weight: 700; }
.service-card li::before { content: "—"; margin-right: 8px; color: var(--accent); }

.network { overflow: hidden; color: var(--white); background: var(--ink); }
.network-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; align-items: center; }
.section-kicker.light { color: #e2b990; }
.network-copy > p:not(.section-kicker) { max-width: 520px; margin: 32px 0; color: rgba(255,255,255,.65); }
.region-tags { display: flex; flex-wrap: wrap; gap: 9px; }
.region-tags span { padding: 7px 13px; border: 1px solid rgba(255,255,255,.2); font-size: 11px; letter-spacing: .07em; }
.route-map { position: relative; min-height: 500px; }
.map-ring { position: absolute; left: 50%; top: 50%; border: 1px solid rgba(255,255,255,.11); border-radius: 50%; transform: translate(-50%,-50%); }
.ring-a { width: 220px; height: 220px; }.ring-b { width: 360px; height: 360px; }.ring-c { width: 500px; height: 500px; }
.map-point { position: absolute; z-index: 3; display: flex; align-items: center; gap: 9px; color: rgba(255,255,255,.7); font-size: 9px; letter-spacing: .13em; }
.map-point i { width: 8px; height: 8px; border: 2px solid var(--ink); outline: 1px solid #e8c89b; border-radius: 50%; background: #e8c89b; }
.point-jp { left: 49%; top: 48%; color: var(--white); }.point-jp i { width: 14px; height: 14px; background: var(--accent); outline-color: var(--accent); }
.point-ea { right: 13%; top: 25%; }.point-sea { right: 8%; bottom: 20%; }.point-west { left: 4%; top: 30%; }
.route { position: absolute; z-index: 1; left: 51%; top: 50%; height: 1px; transform-origin: left center; background: linear-gradient(90deg, #e8c89b, rgba(232,200,155,.08)); }
.route::after { content: ""; position: absolute; inset: -2px auto auto 44%; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.route-a { width: 215px; transform: rotate(-39deg); }.route-b { width: 240px; transform: rotate(31deg); }.route-c { width: 270px; transform: rotate(198deg); }

.categories { background: var(--paper-2); }
.category-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.category-grid article { min-height: 245px; padding: 34px 27px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: color .25s, background .25s; }
.category-grid article:hover { color: var(--white); background: var(--ink); }
.category-grid span { color: var(--accent); font-family: Georgia, serif; font-size: 11px; }
.category-grid h3 { margin: 72px 0 8px; font-family: var(--serif); font-size: 20px; font-weight: 500; }
.category-grid p { margin: 0; color: var(--muted); font-size: 12px; }.category-grid article:hover p { color: rgba(255,255,255,.6); }

.process { background: var(--white); }
.process-list { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.process-list li { position: relative; min-height: 260px; padding: 30px 28px; border-right: 1px solid var(--line); }
.process-list li:last-child { border: 0; }
.process-list li::after { content: "→"; position: absolute; right: -10px; top: 27px; z-index: 2; width: 20px; color: var(--accent); background: var(--white); text-align: center; }
.process-list li:last-child::after { display: none; }
.process-list > li > span { color: var(--accent); font-family: Georgia, serif; font-size: 11px; }
.process-list h3 { margin: 75px 0 10px; font-family: var(--serif); font-size: 21px; font-weight: 500; }
.process-list p { margin: 0; color: var(--muted); font-size: 13px; }

.about { background: var(--paper); }
.about-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 100px; align-items: stretch; }
.about-panel { position: relative; min-height: 650px; padding: 55px; display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; color: var(--white); background: var(--ink-2); }
.about-panel::after { content: ""; position: absolute; width: 420px; height: 420px; right: -155px; bottom: -150px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; box-shadow: 0 0 0 65px rgba(255,255,255,.025), 0 0 0 130px rgba(255,255,255,.02); }
.jp-seal { width: 82px; height: 116px; margin: 0; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.35); color: #e8c89b; font-family: var(--serif); font-size: 24px; line-height: 1.4; }
.about-panel div { position: relative; z-index: 2; }
.about-panel span { display: block; margin-bottom: 17px; color: var(--accent); font-size: 10px; letter-spacing: .22em; }
.about-panel strong { font-family: var(--serif); font-size: 27px; line-height: 1.6; font-weight: 500; }
.about-content { padding: 45px 0; }
.about-content > p:not(.section-kicker) { margin: 30px 0 44px; color: var(--muted); line-height: 2.1; }
.principles { border-top: 1px solid var(--line); }
.principles > div { display: grid; grid-template-columns: 38px 145px 1fr; align-items: center; min-height: 85px; border-bottom: 1px solid var(--line); }
.principles span { color: var(--accent); font-family: Georgia, serif; font-size: 10px; }
.principles h3 { margin: 0; font-family: var(--serif); font-size: 16px; font-weight: 500; }
.principles p { margin: 0; color: var(--muted); font-size: 12px; }

.contact { position: relative; overflow: hidden; color: var(--white); background: var(--accent); }
.contact-inner { position: relative; z-index: 2; text-align: center; }
.contact .section-kicker { justify-content: center; color: rgba(255,255,255,.65); }
.contact h2 { font-size: clamp(42px, 5vw, 66px); }
.contact-inner > p:not(.section-kicker):not(.contact-note) { max-width: 620px; margin: 28px auto 38px; color: rgba(255,255,255,.8); }
.button-light { color: var(--ink); background: var(--white); }
.contact-note { margin: 22px 0 0; color: rgba(255,255,255,.65); font-size: 11px; letter-spacing: .05em; }
.contact-orbit { position: absolute; left: 50%; top: 50%; width: 780px; height: 780px; border: 1px solid rgba(255,255,255,.12); border-radius: 50%; transform: translate(-50%,-50%); box-shadow: 0 0 0 100px rgba(255,255,255,.025), 0 0 0 200px rgba(255,255,255,.02); }

.site-footer { padding: 60px 0 34px; color: rgba(255,255,255,.72); background: #0b2227; }
.footer-inner { display: grid; grid-template-columns: 1fr auto; align-items: start; gap: 60px; }
.footer-nav { display: flex; gap: 24px; font-size: 11px; }
.footer-nav a:hover { color: var(--white); }
.copyright { grid-column: 1 / -1; margin: 42px 0 0; padding-top: 25px; border-top: 1px solid rgba(255,255,255,.12); font-size: 9px; letter-spacing: .14em; }

:focus-visible { outline: 2px solid #e8c89b; outline-offset: 4px; }

@media (max-width: 980px) {
  :root { --shell: min(100% - 38px, 760px); }
  .section-pad { padding: 90px 0; }
  .header-inner { width: calc(100% - 38px); height: 76px; }
  .menu-button { display: block; z-index: 3; }
  .menu-button[aria-expanded="true"] > span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .menu-button[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }
  .menu-button[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .global-nav { position: fixed; inset: 0; display: flex; flex-direction: column; justify-content: center; gap: 26px; color: var(--white); background: var(--ink); opacity: 0; visibility: hidden; transform: translateY(-10px); transition: opacity .25s, visibility .25s, transform .25s; }
  .global-nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .global-nav a { font-size: 17px; }
  .site-header:has(.global-nav.is-open) { color: var(--white); }
  .hero, .hero-inner { min-height: 900px; }
  .hero-inner { padding: 165px 0 170px; }
  .hero-copy { width: 100%; position: relative; z-index: 3; }
  .hero h1 { font-size: clamp(46px, 9vw, 68px); }
  .hero-slide > img { object-position: 66% center; }
  .hero-shade { background: linear-gradient(90deg, rgba(9,34,39,.96), rgba(9,34,39,.75) 58%, rgba(9,34,39,.28)), linear-gradient(0deg, rgba(8,30,34,.82), transparent 44%); }
  .carousel-arrow { width: 46px; height: 46px; }
  .hero-facts { grid-template-columns: repeat(3, 1fr); }
  .hero-facts div { padding: 16px; justify-content: center; }
  .intro-grid, .network-grid, .about-grid { grid-template-columns: 1fr; gap: 55px; }
  .intro-copy { padding-top: 30px; }
  .section-heading { align-items: start; flex-direction: column; gap: 22px; }
  .service-card { grid-template-columns: 48px 90px 1fr; }
  .route-map { min-height: 460px; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .process-list { grid-template-columns: repeat(2, 1fr); }
  .process-list li:nth-child(2) { border-right: 0; }
  .process-list li:nth-child(2)::after { display: none; }
  .process-list li:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .about-panel { min-height: 460px; }
}

@media (max-width: 620px) {
  :root { --shell: calc(100% - 28px); }
  body { font-size: 15px; }
  .section-pad { padding: 72px 0; }
  .header-inner { width: calc(100% - 28px); }
  .brand-mark { width: 38px; height: 38px; }
  .hero, .hero-inner { min-height: 840px; }
  .hero-inner { padding: 130px 0 205px; }
  .hero-copy { width: calc(100% - 8px); }
  .hero h1 { font-size: 42px; line-height: 1.42; }
  .hero-lead br { display: none; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 22px; }
  .hero-slide > img { object-position: 70% center; }
  .hero-shade { background: linear-gradient(90deg, rgba(8,30,34,.95), rgba(8,30,34,.7)), linear-gradient(0deg, rgba(8,30,34,.88), transparent 50%); }
  .carousel-arrow { top: 48%; width: 42px; height: 42px; background: rgba(8,30,34,.38); }
  .carousel-prev { left: 10px; }.carousel-next { right: 10px; }
  .carousel-dots { bottom: 118px; gap: 9px; }
  .hero-facts { bottom: 5px; }
  .hero-facts div { min-height: 98px; flex-direction: column; gap: 6px; text-align: center; }
  .hero-facts dt { font-size: 10px; }.hero-facts dd { font-size: 9px; }
  .intro h2, .section-heading h2, .network h2, .about h2 { font-size: 35px; }
  .service-card { grid-template-columns: 40px 1fr; gap: 18px 12px; }
  .service-icon { grid-column: 2; width: 64px; height: 64px; }
  .service-card > div:last-child { grid-column: 2; }
  .service-card ul { display: grid; gap: 6px; }
  .route-map { min-height: 370px; transform: scale(.83); margin: -30px; }
  .category-grid, .process-list { grid-template-columns: 1fr; }
  .category-grid article { min-height: 190px; }
  .category-grid h3 { margin-top: 45px; }
  .process-list li { min-height: auto; padding: 27px 10px; border-right: 0; border-bottom: 1px solid var(--line); }
  .process-list li::after { display: none; }
  .process-list h3 { margin-top: 34px; }
  .about-panel { min-height: 400px; padding: 34px; }
  .about-content { padding-bottom: 0; }
  .principles > div { grid-template-columns: 32px 1fr; padding: 15px 0; }
  .principles p { grid-column: 2; }
  .contact h2 { font-size: 38px; }
  .button-light { gap: 18px; }
  .footer-inner { grid-template-columns: 1fr; gap: 35px; }
  .footer-nav { display: grid; grid-template-columns: repeat(2, 1fr); }
  .copyright { margin-top: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}