:root {
  --navy-950: #041326;
  --navy-900: #071a34;
  --navy-800: #0c274a;
  --navy-700: #13385f;
  --blue: #1f68a6;
  --white: #f8fbff;
  --paper: #f2f5f8;
  --ink: #0a1a2e;
  --muted: #697687;
  --line: rgba(7, 26, 52, .16);
  --header-h: 82px;
  --ease: cubic-bezier(.22,.8,.26,1);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--navy-950); }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
img, video { display: block; max-width: 100%; }
.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; }

.site-header { position: fixed; z-index: 100; inset: 0 0 auto 0; height: var(--header-h); display: flex; align-items: center; justify-content: space-between; padding: 0 clamp(22px, 4vw, 70px); color: #fff; background: linear-gradient(180deg, rgba(3,13,28,.72), transparent); transition: background .35s ease; }
.brand { display: inline-flex; align-items: center; gap: 13px; letter-spacing: .08em; }
.brand-mark { width: 46px; color: white; filter: drop-shadow(0 4px 10px rgba(0,0,0,.18)); }
.brand-mark svg { width: 100%; height: auto; }
.brand-copy { display: grid; line-height: 1; }
.brand-copy b { font: 800 17px/1.05 Arial, sans-serif; letter-spacing: .13em; }
.brand-copy small { margin-top: 5px; font: 600 9px/1 Arial, sans-serif; letter-spacing: .26em; opacity: .78; }
.global-nav { display: flex; gap: clamp(20px, 3.2vw, 52px); align-items: center; }
.global-nav a { position: relative; padding: 12px 0; font: 700 11px/1 Arial, sans-serif; letter-spacing: .17em; }
.global-nav a::after { content: ""; position: absolute; left: 0; bottom: 4px; width: 0; height: 1px; background: #fff; transition: width .3s var(--ease); }
.global-nav a:hover::after { width: 100%; }
.menu-button { display: none; border: 0; background: none; padding: 10px; color: white; }
.menu-button span { display: block; width: 28px; height: 1px; background: currentColor; margin: 6px 0; transition: transform .3s, opacity .3s; }

.hero { position: relative; height: 100svh; min-height: 620px; overflow: hidden; background: #020914; color: #fff; }
.hero-track, .hero-slide { position: absolute; inset: 0; }
.hero-slide { opacity: 0; visibility: hidden; transform: scale(1.025); transition: opacity .85s ease, transform 1.2s var(--ease), visibility .85s; }
.hero-slide.is-active { opacity: 1; visibility: visible; transform: scale(1); z-index: 2; }
.hero-video, .hero-slide--message > img { width: 100%; height: 100%; object-fit: cover; }
.hero-video { background: #020914; }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(2,10,24,.7) 0%, rgba(2,10,24,.24) 55%, rgba(2,10,24,.2) 100%), linear-gradient(0deg, rgba(1,8,18,.55) 0%, transparent 42%); }
.hero-shade--message { background: linear-gradient(90deg, rgba(3,18,39,.78) 0%, rgba(3,18,39,.54) 38%, rgba(3,18,39,.18) 70%), linear-gradient(0deg, rgba(3,18,39,.5), transparent 45%); }
.hero-content { position: absolute; z-index: 3; left: clamp(24px, 7vw, 120px); top: 50%; width: min(720px, 74vw); transform: translateY(-43%); }
.eyebrow { margin: 0 0 18px; font: 700 11px/1 Arial, sans-serif; letter-spacing: .24em; color: rgba(255,255,255,.7); }
.hero-content--forturia h1 { margin: 0; font-size: clamp(43px, 6.6vw, 96px); line-height: .98; letter-spacing: .02em; text-shadow: 0 6px 28px rgba(0,0,0,.28); }
.hero-content--forturia h1 small { display: block; margin-top: 14px; font-size: .32em; letter-spacing: .18em; font-weight: 600; }
.hero-lead { margin: 26px 0 0; font-size: clamp(14px, 1.35vw, 18px); line-height: 2; letter-spacing: .12em; }
.hero-link { display: inline-flex; align-items: center; gap: 20px; margin-top: 30px; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.55); font: 700 11px/1 Arial, sans-serif; letter-spacing: .18em; }
.hero-link span { font-size: 18px; transition: transform .3s var(--ease); }
.hero-link:hover span { transform: translate(4px,4px); }
.hero-content--message { width: min(660px, 76vw); }
.hero-content--message h2 { margin: 0; font-size: clamp(36px, 5vw, 72px); line-height: 1.35; letter-spacing: .03em; }
.hero-content--message > p:not(.eyebrow) { max-width: 610px; margin: 24px 0 0; font-size: clamp(14px, 1.3vw, 18px); line-height: 2.15; letter-spacing: .075em; }
.sound-toggle { position: absolute; z-index: 5; right: clamp(24px, 4vw, 68px); bottom: 38px; border: 1px solid rgba(255,255,255,.42); background: rgba(1,10,24,.26); color: #fff; min-width: 88px; height: 36px; padding: 0 14px; backdrop-filter: blur(8px); cursor: pointer; font: 700 9px/1 Arial, sans-serif; letter-spacing: .15em; }
.hero-pager { position: absolute; z-index: 10; left: 50%; bottom: 38px; transform: translateX(-50%); display: flex; gap: 12px; }
.hero-dot { border: 0; background: none; padding: 8px 2px; cursor: pointer; }
.hero-dot span { display: block; width: 34px; height: 2px; background: rgba(255,255,255,.38); overflow: hidden; position: relative; }
.hero-dot span::after { content: ""; position: absolute; inset: 0; background: #fff; transform: scaleX(0); transform-origin: left; transition: transform .45s var(--ease); }
.hero-dot.is-active span::after { transform: scaleX(1); }
.scroll-guide { position: absolute; z-index: 5; left: clamp(24px, 4vw, 68px); bottom: 28px; display: flex; align-items: center; gap: 13px; color: rgba(255,255,255,.68); font: 700 9px/1 Arial, sans-serif; letter-spacing: .2em; }
.scroll-guide i { width: 42px; height: 1px; background: currentColor; }

.section { position: relative; padding: clamp(100px, 12vw, 190px) clamp(24px, 7vw, 120px); overflow: hidden; }
.section-number { position: absolute; top: 54px; right: clamp(24px, 5vw, 80px); color: rgba(7,26,52,.08); font: 800 clamp(90px, 14vw, 210px)/.8 Arial, sans-serif; letter-spacing: -.08em; user-select: none; }
.section-head { position: relative; z-index: 1; margin-bottom: clamp(56px, 7vw, 100px); }
.section-head h2 { margin: 0; font-size: clamp(36px, 4vw, 62px); line-height: 1.1; letter-spacing: .04em; }
.eyebrow--dark { color: var(--blue); }
.section-subcopy { margin: 20px 0 0; color: var(--muted); font-size: 13px; letter-spacing: .07em; }

.section--company { background: #fff; }
.company-grid { display: grid; grid-template-columns: minmax(0,.8fr) minmax(440px,1.2fr); gap: clamp(60px, 8vw, 140px); align-items: start; }
.large-copy { margin: 0 0 32px; font-size: clamp(28px, 3.2vw, 48px); line-height: 1.55; font-weight: 700; letter-spacing: .05em; }
.company-intro > p:last-child { max-width: 580px; color: #526071; font-size: 14px; line-height: 2.1; letter-spacing: .055em; }
.company-table { margin: 0; border-top: 1px solid var(--line); }
.company-table > div { display: grid; grid-template-columns: 150px 1fr; gap: 22px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.company-table dt { font-size: 11px; font-weight: 700; letter-spacing: .08em; color: #7a8797; }
.company-table dd { margin: 0; font-size: 13px; line-height: 1.8; letter-spacing: .045em; }

.section--business { background: var(--navy-900); color: #fff; }
.section--business .section-number, .section--access .section-number { color: rgba(255,255,255,.05); }
.section-head--light .eyebrow { color: #76b3e9; }
.business-grid { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); border-top: 1px solid rgba(255,255,255,.16); }
.business-card { min-height: 390px; padding: 34px 24px 30px; border-right: 1px solid rgba(255,255,255,.16); transition: background .35s ease, transform .35s var(--ease); }
.business-card:first-child { border-left: 1px solid rgba(255,255,255,.16); }
.business-card:hover { background: rgba(255,255,255,.055); transform: translateY(-5px); }
.business-no { display: block; color: #6aa9e2; font: 700 10px/1 Arial, sans-serif; letter-spacing: .18em; }
.business-card > p:nth-of-type(1) { margin: 72px 0 11px; color: rgba(255,255,255,.48); font: 700 9px/1.5 Arial, sans-serif; letter-spacing: .14em; }
.business-card h3 { margin: 0; font-size: 19px; letter-spacing: .06em; }
.business-line { width: 28px; height: 1px; background: #6aa9e2; margin: 28px 0; }
.business-text { margin: 0; color: rgba(255,255,255,.64); font-size: 12px; line-height: 1.95; letter-spacing: .04em; }

.section--products { background: #eef2f6; }
.product-list { display: grid; gap: 70px; }
.product-card { display: grid; grid-template-columns: minmax(0,1.45fr) minmax(330px,.75fr); gap: clamp(40px, 7vw, 110px); align-items: center; }
.product-visual { position: relative; overflow: hidden; aspect-ratio: 16 / 9; background: var(--navy-900); }
.product-visual::after { content: ""; position: absolute; inset: 0; border: 1px solid rgba(255,255,255,.12); pointer-events: none; }
.product-visual img { width: 100%; height: 100%; object-fit: cover; transition: transform .75s var(--ease), filter .5s; }
.product-visual:hover img { transform: scale(1.035); filter: brightness(1.08); }
.product-index { position: absolute; left: 20px; bottom: 17px; color: white; font: 700 11px/1 Arial, sans-serif; letter-spacing: .16em; }
.product-status { margin: 0 0 18px; color: var(--blue); font: 700 10px/1 Arial, sans-serif; letter-spacing: .18em; }
.product-copy h3 { margin: 0; font-size: clamp(24px, 3vw, 42px); line-height: 1.4; letter-spacing: .04em; }
.product-copy h3 small { display: block; margin-top: 12px; color: #718093; font: 700 10px/1.4 Arial, sans-serif; letter-spacing: .14em; }
.product-copy > p:not(.product-status) { margin: 28px 0 0; color: #586678; font-size: 13px; line-height: 2.05; letter-spacing: .045em; }
.product-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.product-tags span { border: 1px solid #c7d0da; padding: 8px 11px; font: 700 9px/1 Arial, sans-serif; letter-spacing: .13em; }
.text-link, .outline-link { display: inline-flex; align-items: center; gap: 20px; margin-top: 34px; font: 700 10px/1 Arial, sans-serif; letter-spacing: .16em; }
.text-link { padding-bottom: 9px; border-bottom: 1px solid #9ca8b6; }

.section--access { background: #091c36; color: #fff; }
.access-grid { display: grid; grid-template-columns: minmax(280px,.55fr) minmax(0,1.45fr); gap: clamp(45px, 7vw, 110px); align-items: stretch; }
.access-info { padding: 18px 0; }
.access-name { margin: 0 0 32px; font: 800 15px/1.5 Arial, sans-serif; letter-spacing: .12em; }
#accessAddress { font-size: 15px; line-height: 2; letter-spacing: .06em; }
.access-stations { max-width: 440px; margin-top: 28px; color: rgba(255,255,255,.55); font-size: 12px; line-height: 1.9; }
.outline-link { margin-top: 42px; padding: 15px 18px; border: 1px solid rgba(255,255,255,.4); }
.map-frame { min-height: 430px; background: #dce4eb; overflow: hidden; }
.map-frame iframe { width: 100%; height: 100%; border: 0; filter: grayscale(.25) contrast(.95); }

.site-footer { position: relative; background: #031025; color: #fff; overflow: hidden; }
.footer-mountain { height: 160px; position: relative; opacity: .17; }
.footer-mountain span { position: absolute; left: 50%; bottom: -80px; width: 600px; height: 260px; transform: translateX(-50%) rotate(45deg); background: linear-gradient(135deg, #fff 0 45%, transparent 45%); }
.footer-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 40px; padding: 42px clamp(24px, 7vw, 120px) 48px; border-top: 1px solid rgba(255,255,255,.1); }
.footer-brand { font: 800 clamp(20px,2.5vw,34px)/1 Arial, sans-serif; letter-spacing: .11em; }
.footer-brand span { display: block; margin-top: 8px; font-size: .36em; letter-spacing: .25em; opacity: .62; }
.footer-inner nav { display: flex; gap: 26px; }
.footer-inner nav a { color: rgba(255,255,255,.58); font: 700 9px/1 Arial, sans-serif; letter-spacing: .16em; }
.footer-inner p { grid-column: 1/-1; margin: 32px 0 0; color: rgba(255,255,255,.35); font: 600 9px/1 Arial, sans-serif; letter-spacing: .12em; }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1100px) {
  .business-grid { grid-template-columns: repeat(2, 1fr); }
  .business-card:nth-child(odd) { border-left: 1px solid rgba(255,255,255,.16); }
  .business-card { min-height: 310px; border-bottom: 1px solid rgba(255,255,255,.16); }
  .business-card > p:nth-of-type(1) { margin-top: 48px; }
}

@media (max-width: 860px) {
  :root { --header-h: 70px; }
  .site-header { padding: 0 20px; }
  .brand-mark { width: 38px; }
  .brand-copy b { font-size: 14px; }
  .global-nav { position: fixed; inset: 0; display: grid; place-content: center; gap: 30px; background: rgba(4,19,38,.97); opacity: 0; visibility: hidden; transition: .35s ease; }
  .global-nav a { font-size: 17px; text-align: center; }
  .menu-button { display: block; position: relative; z-index: 2; }
  .nav-open .global-nav { opacity: 1; visibility: visible; }
  .nav-open .menu-button span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-open .menu-button span:nth-child(2) { opacity: 0; }
  .nav-open .menu-button span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero { min-height: 600px; }
  .hero-content { left: 24px; width: calc(100vw - 48px); transform: translateY(-38%); }
  .hero-content--forturia h1 { font-size: clamp(38px, 12vw, 68px); }
  .hero-content--message h2 { font-size: clamp(32px, 9vw, 54px); }
  .sound-toggle { right: 20px; bottom: 86px; }
  .scroll-guide { display: none; }
  .hero-pager { bottom: 30px; }
  .section { padding-inline: 24px; }
  .section-number { top: 38px; right: 20px; }
  .company-grid, .product-card, .access-grid { grid-template-columns: 1fr; }
  .company-grid { gap: 48px; }
  .company-table > div { grid-template-columns: 115px 1fr; }
  .product-card { gap: 32px; }
  .map-frame { min-height: 360px; }
  .footer-inner { grid-template-columns: 1fr; align-items: start; }
  .footer-inner nav { flex-wrap: wrap; }
}

@media (max-width: 560px) {
  .brand-copy small { display: none; }
  .hero-video { object-position: center center; }
  .hero-content--forturia h1 small { font-size: .37em; line-height: 1.45; }
  .hero-lead { font-size: 12px; line-height: 1.9; }
  .hero-content--message > p:not(.eyebrow) { font-size: 12px; line-height: 2; }
  .section { padding-top: 92px; padding-bottom: 92px; }
  .section-head { margin-bottom: 50px; }
  .company-table > div { grid-template-columns: 1fr; gap: 8px; }
  .business-grid { grid-template-columns: 1fr; }
  .business-card, .business-card:nth-child(odd) { border-left: 1px solid rgba(255,255,255,.16); min-height: 280px; }
  .product-copy h3 { font-size: 25px; }
  .map-frame { min-height: 310px; }
  .footer-mountain { height: 100px; }
}

@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; }
}