:root {
  --navy: #07182f;
  --navy-2: #0c2340;
  --ink: #142033;
  --muted: #647085;
  --line: #d9e0e8;
  --paper: #f7f9fc;
  --white: #ffffff;
  --cyan: #24d4ea;
  --cyan-dark: #087f91;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif; font-size: 16px; line-height: 1.8; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.shell { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.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; z-index: 1000; top: 8px; left: 8px; padding: 10px 16px; color: var(--navy); background: var(--cyan); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: fixed; z-index: 100; inset: 0 0 auto; color: var(--white); border-bottom: 1px solid rgba(255,255,255,.12); transition: background .25s, box-shadow .25s; }
.site-header.scrolled { background: rgba(7,24,47,.96); box-shadow: 0 10px 30px rgba(0,0,0,.15); }
.header-inner { min-height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 13px; text-decoration: none; }
.brand-mark { display: flex; align-items: end; gap: 3px; width: 31px; height: 31px; padding: 6px; border: 1px solid rgba(255,255,255,.55); }
.brand-mark i { display: block; width: 5px; background: var(--cyan); }
.brand-mark i:nth-child(1) { height: 9px; }.brand-mark i:nth-child(2) { height: 17px; }.brand-mark i:nth-child(3) { height: 12px; }
.brand-copy { display: grid; line-height: 1.2; }
.brand-copy strong { font-family: Arial, sans-serif; font-size: 1.05rem; letter-spacing: .04em; }
.brand-copy small { margin-top: 5px; color: #b8c8db; font-size: .68rem; letter-spacing: .1em; }
.global-nav { display: flex; align-items: center; gap: 28px; font-size: .85rem; font-weight: 700; }
.global-nav a { text-decoration: none; }
.global-nav > a:not(.nav-cta) { color: #c5d1df; transition: color .2s; }
.global-nav > a:not(.nav-cta):hover { color: var(--white); }
.nav-cta { padding: 10px 18px; color: var(--navy); background: var(--cyan); }
.menu-button { display: none; width: 42px; height: 42px; padding: 10px; border: 0; background: transparent; }
.menu-button > span:not(.sr-only) { display: block; height: 2px; margin: 5px 0; background: #fff; }

.hero { min-height: 770px; padding: 180px 0 100px; color: var(--white); background: var(--navy); overflow: hidden; position: relative; }
.hero::after { content: ""; position: absolute; right: -130px; bottom: -260px; width: 620px; height: 620px; border: 1px solid rgba(36,212,234,.16); border-radius: 50%; box-shadow: 0 0 0 80px rgba(36,212,234,.025), 0 0 0 160px rgba(36,212,234,.018); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 70px; }
.eyebrow, .section-number { margin: 0 0 24px; color: var(--cyan-dark); font: 700 .75rem/1.3 Arial, sans-serif; letter-spacing: .16em; }
.eyebrow { color: var(--cyan); display: flex; align-items: center; gap: 10px; }
.eyebrow span { width: 26px; height: 1px; background: var(--cyan); }
.hero h1 { margin: 0; font-size: clamp(2.6rem, 5.5vw, 4.8rem); line-height: 1.2; letter-spacing: -.045em; font-weight: 800; }
.hero h1 em { color: var(--cyan); font-style: normal; }
.hero-lead { max-width: 660px; margin: 30px 0 0; color: #bfccda; font-size: 1.08rem; line-height: 2; }
.hero-actions { display: flex; gap: 12px; margin-top: 38px; }
.button { min-height: 54px; padding: 13px 22px; display: inline-flex; align-items: center; justify-content: center; gap: 18px; font-weight: 800; font-size: .9rem; text-decoration: none; border: 1px solid transparent; transition: transform .2s, background .2s, border-color .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--navy); background: var(--cyan); }
.button-primary:hover { background: #5fe3f3; }
.button-ghost { color: var(--white); border-color: rgba(255,255,255,.32); }
.button-ghost:hover { border-color: var(--white); }
.button-light { color: var(--navy); background: var(--white); }

.hero-system { padding: 30px; border: 1px solid rgba(255,255,255,.18); background: rgba(4,17,35,.54); box-shadow: 24px 24px 0 rgba(36,212,234,.07); }
.system-label { padding-bottom: 17px; color: #6e849b; border-bottom: 1px solid rgba(255,255,255,.1); font: 700 .68rem Arial, sans-serif; letter-spacing: .18em; }
.system-row { display: grid; grid-template-columns: 1fr 28px 1fr 28px 1fr; align-items: center; padding: 30px 0 26px; }
.system-node { min-height: 128px; padding: 15px 12px; display: flex; flex-direction: column; justify-content: center; border: 1px solid rgba(255,255,255,.13); }
.system-node.active { border-color: var(--cyan); background: rgba(36,212,234,.08); }
.system-node span { color: var(--cyan); font: 700 .7rem Arial, sans-serif; }
.system-node strong { margin-top: 18px; font-size: .92rem; }
.system-node small { margin-top: 3px; color: #8093a7; font-size: .7rem; }
.system-rail { height: 1px; background: rgba(255,255,255,.2); position: relative; }
.system-rail i { position: absolute; right: -1px; top: -2px; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); }
.system-status { display: flex; align-items: center; gap: 10px; padding-top: 18px; color: #98aabd; border-top: 1px solid rgba(255,255,255,.1); font-size: .75rem; }
.system-status span { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 5px rgba(36,212,234,.12); }

.problem-strip { background: #0c213c; color: var(--white); }
.problem-grid { min-height: 160px; display: grid; grid-template-columns: 250px 1fr; align-items: center; gap: 50px; }
.problem-title { padding-right: 36px; border-right: 1px solid rgba(255,255,255,.15); font-weight: 800; line-height: 1.6; }
.problem-grid ul { padding: 24px 0; margin: 0; display: grid; gap: 10px; list-style: none; color: #c4d0dd; font-size: .88rem; }
.problem-grid li span { margin-right: 14px; color: var(--cyan); font: 700 .68rem Arial, sans-serif; }

.section { padding: 120px 0; }
.section-heading { display: grid; grid-template-columns: 1.1fr .9fr; gap: 80px; align-items: end; margin-bottom: 64px; }
.section-heading h2, .outcome-copy h2, .about-copy h2, .contact h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.35rem); line-height: 1.35; letter-spacing: -.035em; }
.section-heading > p { max-width: 480px; margin: 0; color: var(--muted); line-height: 2; }
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.service-card { min-height: 390px; padding: 38px; background: var(--white); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.service-card.featured { box-shadow: inset 5px 0 0 var(--cyan-dark); }
.card-top { display: flex; justify-content: space-between; color: var(--cyan-dark); font: 700 .75rem Arial, sans-serif; letter-spacing: .12em; }
.card-tag { padding: 5px 8px; color: var(--navy); background: var(--cyan); font-size: .6rem; }
.service-card h3 { margin: 50px 0 18px; font-size: 1.35rem; }
.service-card p { margin: 0; color: var(--muted); }
.service-card ul { display: flex; flex-wrap: wrap; gap: 7px; padding: 0; margin: 30px 0 0; list-style: none; }
.service-card li { padding: 5px 9px; color: #4e5d70; background: #edf2f7; font-size: .72rem; font-weight: 700; }

.approach { color: var(--white); background: var(--navy); }
.section-heading.light > p { color: #aab9ca; }
.section-heading.light .section-number { color: var(--cyan); }
.approach-list { padding: 0; margin: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.16); }
.approach-list li { min-height: 172px; display: grid; grid-template-columns: 90px 1fr 130px; gap: 35px; align-items: center; border-bottom: 1px solid rgba(255,255,255,.16); }
.step-no { color: var(--cyan); font: 700 1.1rem Arial, sans-serif; }
.approach-list h3 { margin: 0 0 7px; font-size: 1.35rem; }
.approach-list p { max-width: 650px; margin: 0; color: #a9b8c8; }
.approach-list > li > span { color: #65778c; font: 700 .66rem Arial, sans-serif; letter-spacing: .14em; text-align: right; }

.outcomes { background: var(--white); }
.outcome-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 100px; }
.outcome-copy > p:last-child { max-width: 400px; color: var(--muted); margin-top: 28px; }
.outcome-list { border-top: 1px solid var(--line); }
.outcome-list > div { min-height: 118px; display: grid; grid-template-columns: 70px 1fr 210px; gap: 22px; align-items: center; border-bottom: 1px solid var(--line); }
.outcome-list span { color: var(--cyan-dark); font-size: .78rem; font-weight: 800; }
.outcome-list strong { font-size: 1rem; }
.outcome-list small { color: var(--muted); font-size: .78rem; }

.about { background: #edf2f7; }
.about-grid { display: grid; grid-template-columns: .65fr 1.35fr; gap: 100px; }
.monogram { width: 230px; height: 230px; margin-top: 55px; display: flex; align-items: center; justify-content: center; color: var(--navy); border: 1px solid #b9c6d5; font: 800 3.5rem Arial, sans-serif; letter-spacing: -.08em; position: relative; }
.monogram::before, .monogram::after { content: ""; position: absolute; background: var(--cyan-dark); }
.monogram::before { width: 80px; height: 5px; top: -3px; left: 22px; }.monogram::after { height: 80px; width: 5px; right: -3px; bottom: 22px; }
.monogram span { color: var(--cyan-dark); }
.about-copy > p { max-width: 700px; color: var(--muted); }
.about-copy > p:first-of-type { margin-top: 35px; color: var(--ink); font-size: 1.08rem; font-weight: 700; }
.about-copy dl { margin: 50px 0 0; border-top: 1px solid #c7d0dc; }
.about-copy dl div { display: grid; grid-template-columns: 120px 1fr; padding: 18px 0; border-bottom: 1px solid #c7d0dc; }
.about-copy dt { color: var(--muted); font-size: .8rem; }
.about-copy dd { margin: 0; font-size: .9rem; font-weight: 700; }

.contact { padding: 110px 0; text-align: center; color: var(--white); background: var(--cyan-dark); }
.contact .section-number { color: var(--white); opacity: .7; }
.contact p:not(.section-number) { margin: 24px auto 34px; opacity: .85; }
.contact .button { min-width: 320px; }

.site-footer { padding: 70px 0 25px; color: #b9c6d5; background: #041124; }
.footer-main { display: flex; align-items: flex-start; justify-content: space-between; gap: 50px; padding-bottom: 60px; }
.footer-main strong { color: var(--white); font: 700 1.25rem Arial, sans-serif; }
.footer-main p { margin: 10px 0 0; font-size: .78rem; }
.footer-main nav { display: flex; gap: 28px; font-size: .78rem; font-weight: 700; }
.footer-main a { text-decoration: none; }
.footer-bottom { padding-top: 22px; display: flex; justify-content: space-between; border-top: 1px solid rgba(255,255,255,.12); color: #65768a; font-size: .7rem; }

@media (max-width: 900px) {
  .shell { width: min(calc(100% - 36px), var(--max)); }
  .header-inner { min-height: 72px; }
  .menu-button { display: block; }
  .global-nav { position: absolute; top: 72px; left: 0; right: 0; padding: 24px; display: none; align-items: stretch; flex-direction: column; gap: 0; background: var(--navy); border-top: 1px solid rgba(255,255,255,.12); }
  .global-nav.open { display: flex; }
  .global-nav a { padding: 13px 0; }
  .global-nav .nav-cta { margin-top: 12px; padding: 11px 16px; text-align: center; }
  .hero { min-height: auto; padding: 130px 0 80px; }
  .hero-grid { grid-template-columns: 1fr; gap: 52px; }
  .hero-system { max-width: 620px; }
  .problem-grid { grid-template-columns: 1fr; gap: 0; padding-block: 30px; }
  .problem-title { margin: 0; padding: 0 0 18px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.15); }
  .problem-grid ul { padding-bottom: 0; }
  .section { padding: 90px 0; }
  .section-heading, .outcome-layout, .about-grid { grid-template-columns: 1fr; gap: 35px; }
  .outcome-layout, .about-grid { gap: 60px; }
  .section-heading { margin-bottom: 48px; }
  .monogram { margin-top: 35px; }
  .outcome-list > div { grid-template-columns: 62px 1fr; padding: 22px 0; }
  .outcome-list small { grid-column: 2; }
}

@media (max-width: 620px) {
  body { line-height: 1.75; }
  .shell { width: min(calc(100% - 28px), var(--max)); }
  .brand-copy small { display: none; }
  .hero h1 { font-size: clamp(2.15rem, 11vw, 3rem); }
  .hero-lead { font-size: 1rem; }
  .hero-actions { flex-direction: column; }
  .hero-system { padding: 20px 16px; }
  .system-row { grid-template-columns: 1fr; gap: 8px; padding: 20px 0; }
  .system-node { min-height: 90px; }
  .system-node strong { margin-top: 8px; }
  .system-rail { width: 1px; height: 16px; margin: 0 auto; }
  .system-rail i { top: auto; right: -2px; bottom: -1px; }
  .problem-grid li { display: grid; grid-template-columns: 28px 1fr; }
  .problem-grid li span { margin: 5px 0 0; }
  .section-heading h2, .outcome-copy h2, .about-copy h2, .contact h2 { font-size: 2rem; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: auto; padding: 30px 24px 34px; }
  .service-card h3 { margin-top: 32px; }
  .approach-list li { grid-template-columns: 48px 1fr; gap: 14px; padding: 28px 0; }
  .approach-list > li > span { display: none; }
  .monogram { width: 180px; height: 180px; font-size: 2.8rem; }
  .about-copy dl div { grid-template-columns: 1fr; gap: 5px; }
  .contact .button { min-width: 0; width: 100%; }
  .footer-main { flex-direction: column; padding-bottom: 40px; }
  .footer-main nav { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 28px; }
  .footer-bottom { flex-direction: column; gap: 5px; }
}

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