:root {
  --ink: #101820;
  --muted: #5c6670;
  --cyan: #087db4;
  --yellow: #f2c84b;
  --line: #cfd7dc;
  --steel: #eef2f4;
  --white: #ffffff;
  --content: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: Inter, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif; line-height: 1.75; letter-spacing: 0; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: min(calc(100% - 64px), var(--content)); margin: 0 auto; }
.skip-link { position: fixed; top: -60px; left: 14px; z-index: 100; padding: 10px 14px; background: #fff; }
.skip-link:focus { top: 12px; }

.site-header { position: sticky; top: 0; z-index: 30; height: 76px; background: #fff; border-bottom: 1px solid var(--line); }
.header-inner { width: min(calc(100% - 64px), 1360px); height: 100%; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand img { width: 52px; height: 38px; }
.brand-copy { display: grid; line-height: 1.15; }
.brand-copy strong { font-size: 16px; font-weight: 900; }
.brand-copy small { margin-top: 4px; color: var(--muted); font-size: 9px; }
.nav-wrap, .site-nav { display: flex; align-items: center; }
.site-nav { gap: 34px; }
.site-nav a { padding: 27px 0 22px; border-bottom: 4px solid transparent; font-size: 12px; font-weight: 800; }
.site-nav a:hover, .site-nav a[aria-current="page"] { border-color: var(--cyan); }
.menu-button { display: none; width: 42px; height: 42px; padding: 0; border: 0; background: transparent; }
.menu-button::before, .menu-button::after, .menu-button span { content: ""; display: block; width: 25px; height: 2px; margin: 5px auto; background: var(--ink); transition: .2s ease; }

.hero { min-height: calc(100svh - 76px); display: grid; align-items: center; color: #fff; background: url("assets/hero.jpg") center center / cover no-repeat; }
.hero-copy { width: min(760px, 58%); padding: 80px 0 120px; text-shadow: 0 2px 22px rgba(0,0,0,.65); }
.hero h1 { margin: 0; font-size: 68px; font-weight: 900; line-height: 1.2; }
.hero p { max-width: 560px; margin: 26px 0 0; font-size: 16px; }
.hero-link, .text-link { display: inline-flex; align-items: center; gap: 20px; margin-top: 34px; padding: 12px 0 8px; border-bottom: 3px solid var(--yellow); font-size: 13px; font-weight: 900; }
.hero-link span, .text-link span { transition: transform .2s ease; }
.hero-link:hover span, .text-link:hover span { transform: translateX(5px); }

.section { padding: 104px 0; }
.section-steel { background: var(--steel); }
.section-dark { color: #fff; background: var(--ink); }
.section-title { display: grid; grid-template-columns: 170px .9fr 1.1fr; gap: 50px; align-items: start; margin-bottom: 64px; }
.rail-label { padding-left: 18px; border-left: 3px solid var(--cyan); color: var(--muted); font-size: 11px; font-weight: 900; }
.section-title h2, .page-heading h1, .principles h2 { margin: 0; font-size: 46px; font-weight: 900; line-height: 1.35; }
.section-title p { margin: 6px 0 0; color: var(--muted); }

.capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.capability { min-height: 280px; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.capability strong { font-size: 38px; line-height: 1; }
.capability h3 { margin: 38px 0 12px; font-size: 20px; line-height: 1.5; }
.capability p { margin: 0; color: var(--muted); font-size: 13px; }
.capability:nth-child(2n) strong { color: var(--cyan); }
.capability:nth-child(3n) strong { text-decoration: underline; text-decoration-color: var(--yellow); text-decoration-thickness: 5px; text-underline-offset: 7px; }

.global-band { position: relative; min-height: 520px; display: grid; align-items: center; color: #fff; background: url("assets/port.jpg") center / cover no-repeat; }
.global-copy { width: min(620px, 56%); padding: 70px 54px; background: rgba(16,24,32,.9); }
.global-copy .rail-label { color: rgba(255,255,255,.68); }
.global-copy h2 { margin: 24px 0 18px; font-size: 46px; line-height: 1.35; }
.global-copy p { color: rgba(255,255,255,.75); }

.principles { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; align-items: center; }
.principles p { color: var(--muted); }
.principle-list { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.principle-list div { min-height: 140px; padding: 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.principle-list strong { color: var(--cyan); }
.principle-list span { display: block; margin-top: 24px; font-weight: 800; }

.company-strip { display: grid; grid-template-columns: .85fr 1.15fr; }
.company-copy { padding: 78px max(48px, calc((100vw - var(--content))/2)); padding-right: 70px; background: var(--steel); }
.company-copy h2 { margin: 24px 0; font-size: 44px; line-height: 1.35; }
.company-copy p { color: var(--muted); }
.company-image { min-height: 520px; background: url("assets/hero.jpg") 78% center / cover no-repeat; }

.page-hero { padding: 90px 0 70px; border-bottom: 1px solid var(--line); }
.page-heading { display: grid; grid-template-columns: 170px .9fr 1.1fr; gap: 50px; align-items: end; }
.page-heading p { margin: 0; color: var(--muted); }
.service-list { margin: 0; padding: 0; list-style: none; border-top: 2px solid var(--ink); }
.service-row { display: grid; grid-template-columns: 90px .8fr 1.2fr; gap: 34px; padding: 38px 0; border-bottom: 1px solid var(--line); }
.service-row > strong { color: var(--cyan); font-size: 18px; }
.service-row h2 { margin: 0; font-size: 24px; line-height: 1.45; }
.service-row p, .service-row ul { margin: 0; color: var(--muted); }
.detail-products { margin-top: 48px; padding: 32px; border-left: 5px solid var(--yellow); background: var(--steel); }
.detail-products h2 { margin: 0 0 14px; font-size: 21px; }
.detail-products p { margin: 0; color: var(--muted); font-size: 13px; }
.notice { margin-top: 38px; padding: 20px 24px; border: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.company-table { width: 100%; border-collapse: collapse; }
.company-table th, .company-table td { padding: 22px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.company-table th { width: 220px; color: var(--muted); font-size: 12px; }
.company-table td ol { margin: 0; padding-left: 22px; }
.company-table td li + li { margin-top: 8px; }
.privacy-copy { max-width: 840px; }
.privacy-copy h2 { margin: 44px 0 10px; font-size: 22px; }
.privacy-copy h2:first-child { margin-top: 0; }
.privacy-copy p { color: var(--muted); }

.site-footer { padding: 58px 0 26px; border-top: 5px solid var(--cyan); background: #fff; }
.footer-top { display: flex; justify-content: space-between; gap: 60px; }
.footer-nav { display: flex; gap: 26px; font-size: 12px; font-weight: 800; }
.footer-address { margin: 22px 0 0; color: var(--muted); font-size: 11px; }
.footer-bottom { margin-top: 48px; padding-top: 18px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; color: var(--muted); font-size: 10px; }
.footer-bottom span:last-child { font-weight: 900; color: var(--ink); }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { opacity: 1; transform: none; transition: none; } }

@media (max-width: 920px) {
  .section-title, .page-heading { grid-template-columns: 130px 1fr; }
  .section-title p, .page-heading p { grid-column: 2; }
  .company-strip { grid-template-columns: 1fr; }
  .company-copy { padding: 64px 32px; }
  .company-image { min-height: 430px; }
}

@media (max-width: 700px) {
  body.menu-open { overflow: hidden; }
  .container, .header-inner { width: min(calc(100% - 32px), var(--content)); }
  .site-header { height: 68px; }
  .brand img { width: 46px; }
  .brand-copy strong { font-size: 13px; }
  .brand-copy small { display: none; }
  .menu-button { display: block; }
  .menu-button[aria-expanded="true"] span { opacity: 0; }
  .menu-button[aria-expanded="true"]::before { transform: translateY(7px) rotate(45deg); }
  .menu-button[aria-expanded="true"]::after { transform: translateY(-7px) rotate(-45deg); }
  .nav-wrap { display: none; position: absolute; top: 68px; left: 0; width: 100%; height: calc(100svh - 68px); padding: 44px 24px; background: #fff; }
  .nav-wrap.is-open { display: block; }
  .site-nav { display: grid; gap: 0; }
  .site-nav a { padding: 18px 0; border-bottom: 1px solid var(--line); font-size: 17px; }
  .hero { min-height: calc(100svh - 68px); background-position: 43% center; }
  .hero-copy { width: 100%; padding: 84px 0 120px; }
  .hero h1 { font-size: 42px; }
  .hero p { font-size: 14px; }
  .section { padding: 76px 0; }
  .section-title, .page-heading, .principles { grid-template-columns: 1fr; gap: 26px; }
  .section-title { margin-bottom: 44px; }
  .section-title p, .page-heading p { grid-column: 1; }
  .section-title h2, .page-heading h1, .principles h2 { font-size: 34px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability { min-height: 0; padding: 28px 22px; }
  .capability h3 { margin: 20px 0 10px; }
  .global-band { min-height: 650px; align-items: end; }
  .global-copy { width: 100%; padding: 38px 24px; }
  .global-copy h2 { font-size: 34px; }
  .principles { gap: 42px; }
  .principle-list { grid-template-columns: 1fr; }
  .company-copy h2 { font-size: 34px; }
  .company-image { min-height: 340px; }
  .page-hero { padding: 68px 0 52px; }
  .service-row { grid-template-columns: 44px 1fr; gap: 16px; }
  .service-row p, .service-row ul { grid-column: 2; }
  .company-table, .company-table tbody, .company-table tr, .company-table th, .company-table td { display: block; width: 100%; }
  .company-table th { padding-bottom: 3px; border-bottom: 0; }
  .company-table td { padding-top: 3px; }
  .footer-top, .footer-bottom { flex-direction: column; }
  .footer-nav { display: grid; gap: 14px; }
}