:root {
  --color-primary: #003366;
  --color-primary-dark: #0b2545;
  --color-accent: #007bff;
  --color-accent-light: #7bc4e2;
  --color-matchai: #526b31;
  --color-text: #1f2937;
  --color-muted: #667085;
  --color-background: #fff;
  --color-surface: #f5f8fb;
  --color-border: #d9e2ec;
  --font-ja: "Noto Sans JP", sans-serif;
  --font-latin: "Inter", sans-serif;
  --container-max: 1200px;
  --content-max: 780px;
  --radius-card: 12px;
  --radius-button: 8px;
  --shadow-card: 0 14px 40px rgba(11, 37, 69, .08);
  --header-height: 68px;
  --transition: 180ms ease;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 20px); }
body { margin: 0; overflow-x: hidden; background: var(--color-background); color: var(--color-text); font-family: var(--font-ja); font-size: 16px; line-height: 1.75; -webkit-font-smoothing: antialiased; }
body.is-menu-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin-top: 0; }
ul, ol { padding: 0; list-style: none; }
.container { width: min(100% - 40px, var(--container-max)); margin-inline: auto; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 9999; padding: 10px 16px; background: #fff; color: var(--color-primary); transform: translateY(-150%); box-shadow: var(--shadow-card); }
.skip-link:focus { transform: none; }
.eyebrow { margin-bottom: 12px; color: var(--color-accent); font-family: var(--font-latin); font-size: .75rem; font-weight: 800; letter-spacing: .16em; }
.eyebrow--light { color: var(--color-accent-light); }
.section { padding: 76px 0; }
.section--surface { background: var(--color-surface); }
.section--primary-dark { background: var(--color-primary-dark); color: #fff; }
.section-heading { margin-bottom: 32px; }
.section-heading--center { text-align: center; }
.section-heading--light .section-title { color: #fff; }
.section-title { margin-bottom: 16px; color: var(--color-primary); font-size: clamp(1.75rem, 5vw, 2.75rem); font-weight: 700; line-height: 1.35; letter-spacing: -.03em; }
.section-description { max-width: var(--content-max); margin-inline: auto; color: var(--color-muted); }
.section-description p:last-child, .prose p:last-child { margin-bottom: 0; }
.prose { max-width: var(--content-max); color: var(--color-muted); }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 12px 22px; border: 1px solid transparent; border-radius: var(--radius-button); font-weight: 700; line-height: 1.4; text-align: center; transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition); }
.button:hover { transform: translateY(-2px); }
.button--primary { background: var(--color-primary); color: #fff; }
.button--accent { background: var(--color-accent); color: #fff; box-shadow: 0 10px 25px rgba(0, 123, 255, .25); }
.button--accent:hover { background: #006ee6; }
.button--outline-light { border-color: rgba(255, 255, 255, .55); color: #fff; }
.button--outline-light:hover { background: rgba(255, 255, 255, .1); }
a:focus-visible, button:focus-visible { outline: 3px solid rgba(0, 123, 255, .42); outline-offset: 3px; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 1000; height: var(--header-height); border-bottom: 1px solid rgba(217, 226, 236, .85); background: rgba(255, 255, 255, .96); transition: box-shadow var(--transition); }
.site-header.is-scrolled { box-shadow: 0 8px 24px rgba(11, 37, 69, .08); }
.site-header__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.site-brand { display: flex; flex-direction: column; line-height: 1; }
.site-brand__name { color: var(--color-primary); font-family: var(--font-latin); font-size: 1.25rem; font-weight: 800; letter-spacing: -.04em; }
.site-brand__tagline { margin-top: 6px; color: var(--color-muted); font-family: var(--font-latin); font-size: .5rem; font-weight: 700; letter-spacing: .2em; }
.site-nav__toggle { display: flex; min-width: 48px; min-height: 48px; align-items: center; justify-content: center; gap: 9px; border: 0; background: transparent; color: var(--color-primary); }
.site-nav__toggle-label { font-family: var(--font-latin); font-size: .68rem; font-weight: 700; letter-spacing: .1em; }
.site-nav__toggle-icon { display: flex; flex-direction: column; gap: 5px; }
.site-nav__toggle-icon span { display: block; width: 22px; height: 2px; background: currentColor; transition: transform var(--transition), opacity var(--transition); }
.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-icon span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-icon span:nth-child(2) { opacity: 0; }
.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-icon span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.site-nav__panel { position: fixed; top: var(--header-height); right: 0; bottom: 0; left: 0; display: flex; flex-direction: column; gap: 4px; padding: 24px 20px; background: #fff; visibility: hidden; opacity: 0; transform: translateY(-8px); transition: opacity var(--transition), transform var(--transition), visibility var(--transition); }
.site-nav__panel.is-open { visibility: visible; opacity: 1; transform: none; }
.site-nav__link { padding: 14px 8px; border-bottom: 1px solid var(--color-border); color: var(--color-primary); font-weight: 600; }
.site-nav__cta { margin-top: 16px; }

.breadcrumb { padding-top: calc(var(--header-height) + 18px); padding-bottom: 18px; color: var(--color-muted); font-size: .78rem; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; }
.breadcrumb li { display: inline-flex; min-width: 0; align-items: center; overflow-wrap: anywhere; }
.breadcrumb li:not(:last-child)::after { width: 1px; height: .9em; margin-left: 6px; background: #a6b2bf; content: ""; transform: rotate(20deg); }
.breadcrumb a { color: inherit; text-decoration: underline; text-underline-offset: 3px; }

.hero { position: relative; overflow: hidden; background: var(--color-primary-dark); color: #fff; }
.hero::before { position: absolute; right: -180px; bottom: -260px; width: 500px; height: 500px; border: 72px solid rgba(123, 196, 226, .06); border-radius: 50%; content: ""; }
.hero__inner { position: relative; display: grid; gap: 42px; padding-top: 64px; padding-bottom: 72px; }
.hero h1 { max-width: 700px; margin-bottom: 22px; font-size: clamp(2.15rem, 8vw, 4rem); line-height: 1.28; letter-spacing: -.04em; }
.hero__project { margin-bottom: 8px; color: var(--color-accent-light); font-size: clamp(1.05rem, 3vw, 1.3rem); font-weight: 700; }
.hero__client { display: flex; flex-wrap: wrap; gap: 6px 12px; margin-bottom: 20px; color: rgba(255, 255, 255, .68); font-size: .82rem; }
.hero__client span { color: var(--color-accent-light); font-family: var(--font-latin); font-size: .68rem; font-weight: 800; letter-spacing: .12em; }
.hero__lead { max-width: 650px; margin-bottom: 26px; color: rgba(255, 255, 255, .78); }
.hero__tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; }
.hero__tags li { padding: 7px 12px; border: 1px solid rgba(123, 196, 226, .42); border-radius: 999px; background: rgba(255, 255, 255, .05); font-size: .76rem; font-weight: 600; }
.hero__visual { display: grid; grid-template-columns: minmax(0, 1fr) minmax(80px, 23%); gap: 14px; align-items: end; }
.hero__main-image, .hero__sub-image { display: block; overflow: hidden; border-radius: var(--radius-card); background: #fff; }
.hero__main-image img { width: 100%; aspect-ratio: 1.1 / 1; object-fit: contain; }
.hero__sub-image img { width: 100%; aspect-ratio: 1 / 1.78; object-fit: contain; }

.split-heading { display: grid; gap: 4px; margin-bottom: 46px; }
.overview__summary { display: grid; gap: 28px; align-items: center; margin-bottom: 40px; }
.overview__collage { margin: 0; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-card); background: var(--color-surface); }
.overview__collage img { width: 100%; aspect-ratio: 5 / 3; object-fit: contain; }
.overview__collage figcaption { padding: 12px 16px; color: var(--color-muted); font-size: .78rem; }
.project-facts { margin: 0; border-top: 1px solid var(--color-border); }
.project-facts div { padding: 17px 0; border-bottom: 1px solid var(--color-border); }
.project-facts dt { margin-bottom: 5px; color: var(--color-accent); font-size: .75rem; font-weight: 800; }
.project-facts dd { margin: 0; color: var(--color-primary); font-weight: 600; }
.scope-cards { display: grid; gap: 12px; margin: 0; }
.scope-cards li { padding: 24px; border-top: 2px solid var(--color-primary); background: var(--color-surface); }
.scope-cards span { color: var(--color-accent); font-family: var(--font-latin); font-size: .72rem; font-weight: 800; }
.scope-cards h3 { margin: 14px 0 8px; color: var(--color-primary); font-size: 1.08rem; }
.scope-cards p { margin: 0; color: var(--color-muted); font-size: 1rem; line-height: 1.65; }

.media-split { display: grid; gap: 40px; align-items: center; }
.media-frame { margin: 0; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-card); background: #fff; box-shadow: var(--shadow-card); }
.media-frame img { width: 100%; object-fit: contain; }
.media-frame--square img { aspect-ratio: 1 / 1; }
.media-frame figcaption, .package figure figcaption, .naming__detail figcaption { padding: 12px 16px; color: var(--color-muted); font-size: .78rem; }

.naming__layout { display: grid; gap: 42px; align-items: center; }
.naming__formula { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 32px 0 0; padding: 22px; border-left: 3px solid var(--color-matchai); background: var(--color-surface); color: var(--color-primary); font-family: var(--font-latin); font-weight: 700; }
.naming__formula b { color: var(--color-muted); font-weight: 500; }
.naming__formula strong { color: var(--color-matchai); font-size: 1.25rem; }
.naming__visuals { display: grid; grid-template-columns: minmax(110px, .72fr) minmax(0, 1.28fr); gap: 16px; align-items: end; }
.naming__stick, .naming__detail { display: block; margin: 0; padding: 18px; border: 1px solid var(--color-border); border-radius: var(--radius-card); background: var(--color-surface); }
.naming__stick img { width: 100%; max-height: 540px; object-fit: contain; }
.naming__detail img { width: 100%; aspect-ratio: 1116 / 660; object-fit: cover; }
.naming__detail { padding-bottom: 0; }

.package__featured { max-width: 960px; margin: 0 auto 28px; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-card); background: #fff; box-shadow: var(--shadow-card); }
.package__featured img { width: 100%; max-height: 760px; object-fit: contain; }
.package__details { display: grid; gap: 14px; }
.package__details figure { display: flex; min-width: 0; flex-direction: column; margin: 0; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-card); background: #fff; }
.package__details picture { display: grid; min-height: 300px; flex: 1; place-items: center; padding: 18px; }
.package__details img { width: 100%; max-height: 380px; object-fit: contain; }
.package__details figure:last-child img { aspect-ratio: 1200 / 682; object-fit: cover; }
.package-targets { display: grid; gap: 10px; margin: 36px 0 0; }
.package-targets li { display: flex; min-height: 78px; flex-direction: column; justify-content: center; padding: 16px 18px; border: 1px solid var(--color-border); background: #fff; }
.package-targets span { color: var(--color-accent); font-family: var(--font-latin); font-size: .7rem; font-weight: 800; letter-spacing: .08em; }
.package-targets strong { margin-top: 5px; color: var(--color-primary); }
.design-points { margin-top: 46px; padding: 28px; border-radius: var(--radius-card); background: var(--color-primary-dark); color: #fff; }
.design-points h3 { margin-bottom: 22px; font-size: 1.3rem; }
.design-points ol { display: grid; gap: 0; margin: 0; border-top: 1px solid rgba(255, 255, 255, .17); }
.design-points li { display: grid; grid-template-columns: 36px 1fr; gap: 10px; padding: 17px 0; border-bottom: 1px solid rgba(255, 255, 255, .17); }
.design-points span { color: var(--color-accent-light); font-family: var(--font-latin); font-size: .72rem; font-weight: 800; }
.design-points p { margin: 0; color: rgba(255, 255, 255, .8); }

.process-grid { display: grid; gap: 18px; }
.process-card { align-self: start; margin: 0; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-card); background: #fff; box-shadow: var(--shadow-card); }
.process-card picture { display: grid; aspect-ratio: 4 / 3; place-items: center; overflow: hidden; background: #f7f7f5; }
.process-card img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.process-card--wide picture { aspect-ratio: 16 / 9; }
.process-card figcaption { display: grid; grid-template-columns: 34px 1fr; gap: 8px; padding: 18px; color: var(--color-primary); font-weight: 700; }
.process-card figcaption span { color: var(--color-accent); font-family: var(--font-latin); font-size: .72rem; }

.launch__intro { display: grid; gap: 4px; }
.launch__copy { max-width: var(--content-max); color: rgba(255, 255, 255, .76); }
.launch__copy p:last-child { margin-bottom: 0; }
.launch__scope { display: flex; flex-wrap: wrap; gap: 8px; margin: 38px 0 54px; }
.launch__scope li { padding: 8px 12px; border: 1px solid rgba(123, 196, 226, .3); border-radius: 999px; background: rgba(255, 255, 255, .05); color: rgba(255, 255, 255, .88); font-size: .82rem; }
.timeline { margin: 0; }
.timeline li { position: relative; display: grid; grid-template-columns: 82px 1fr; gap: 18px; padding: 0 0 28px 28px; }
.timeline li::before { position: absolute; top: 8px; left: 0; z-index: 1; width: 12px; height: 12px; border: 3px solid var(--color-primary-dark); border-radius: 50%; background: var(--color-accent-light); box-shadow: 0 0 0 1px rgba(123, 196, 226, .5); content: ""; }
.timeline li:not(:last-child)::after { position: absolute; top: 20px; bottom: 0; left: 5px; width: 1px; background: rgba(123, 196, 226, .35); content: ""; }
.timeline time { color: var(--color-accent-light); font-family: var(--font-latin); font-size: .78rem; font-weight: 800; }
.timeline p { margin: -4px 0 0; color: #fff; font-weight: 600; }

.results { padding-block: 64px; }
.results__inner { display: grid; gap: 2px; }
.results__copy { font-size: 1.04rem; }

.application-cta { padding: 64px 0; background: var(--color-primary); color: #fff; }
.application-cta__inner { display: grid; gap: 28px; }
.application-cta h2 { margin-bottom: 16px; font-size: clamp(1.55rem, 5vw, 2.4rem); line-height: 1.45; }
.application-cta p:not(.eyebrow) { max-width: 720px; color: rgba(255, 255, 255, .76); }
.application-cta__actions { display: flex; flex-direction: column; gap: 12px; }

.site-footer { padding: 64px 0 28px; border-top: 1px solid var(--color-border); background: var(--color-surface); }
.site-footer__brand { display: flex; flex-direction: column; gap: 6px; margin-bottom: 32px; line-height: 1; }
.site-footer__brand .site-brand__name,
.site-footer__brand .site-brand__tagline { display: block; line-height: 1; }
.site-footer__brand .site-brand__tagline { margin-top: 0; }
.site-footer__offices { display: grid; gap: 24px; }
.site-footer address { color: var(--color-muted); font-size: .85rem; font-style: normal; }
.site-footer address strong { display: block; margin-bottom: 6px; color: var(--color-primary); font-family: var(--font-latin); font-size: .75rem; letter-spacing: .08em; }
.site-footer__bottom { display: flex; flex-direction: column; gap: 12px; margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--color-border); color: var(--color-muted); font-size: .75rem; }
.site-footer__links { display: flex; flex-wrap: wrap; gap: 10px 24px; }
.site-footer__bottom a { color: var(--color-primary); font-weight: 700; }
.site-footer__bottom p { margin: 0; }

@media (min-width: 768px) {
  :root { --header-height: 76px; }
  .container { width: min(100% - 64px, var(--container-max)); }
  .section { padding: 108px 0; }
  .hero__inner { padding-top: 88px; padding-bottom: 94px; }
  .split-heading { grid-template-columns: minmax(250px, .78fr) minmax(0, 1.22fr); gap: 64px; }
  .overview__summary { grid-template-columns: minmax(0, 1fr) minmax(300px, .8fr); gap: 54px; }
  .scope-cards { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .results { padding-block: 84px; }
  .media-split { grid-template-columns: minmax(0, 1fr) minmax(340px, .75fr); gap: 72px; }
  .naming__layout { grid-template-columns: minmax(0, 1fr) minmax(350px, .9fr); gap: 64px; }
  .package__details { grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .package-targets { grid-template-columns: repeat(2, 1fr); }
  .design-points ol { grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid rgba(255, 255, 255, .17); }
  .design-points li { display: block; padding: 18px; border-right: 1px solid rgba(255, 255, 255, .17); border-bottom: 0; }
  .design-points li:last-child { border-right: 0; }
  .design-points p { margin-top: 12px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .launch__intro { grid-template-columns: minmax(260px, .8fr) minmax(0, 1.2fr); gap: 72px; }
  .timeline { display: grid; grid-template-columns: repeat(5, 1fr); }
  .timeline li { display: block; padding: 34px 22px 0 0; }
  .timeline li::before { top: 0; left: 0; }
  .timeline li:not(:last-child)::after { top: 5px; right: 0; bottom: auto; left: 12px; width: calc(100% - 12px); height: 1px; }
  .timeline p { margin-top: 10px; font-size: .9rem; }
  .results__inner { grid-template-columns: minmax(250px, .75fr) minmax(0, 1.25fr); gap: 64px; }
  .application-cta__actions { flex-direction: row; flex-wrap: wrap; }
  .site-footer__offices { grid-template-columns: repeat(2, 1fr); }
  .site-footer__bottom { flex-direction: row; justify-content: space-between; }
}

@media (min-width: 1024px) {
  .site-nav__toggle { display: none; }
  .site-nav__panel { position: static; display: flex; flex-direction: row; align-items: center; gap: 20px; padding: 0; background: transparent; visibility: visible; opacity: 1; transform: none; }
  .site-nav__link { padding: 10px 0; border: 0; color: var(--color-muted); font-size: .84rem; }
  .site-nav__link:hover { color: var(--color-primary); }
  .site-nav__cta { margin: 0 0 0 4px; padding: 10px 18px; font-size: .82rem; }
  .hero__inner { grid-template-columns: minmax(0, .84fr) minmax(520px, 1.16fr); gap: 64px; align-items: center; padding-top: 104px; padding-bottom: 108px; }
  .hero__visual { grid-template-columns: minmax(0, 1fr) 132px; }
  .scope-cards { grid-template-columns: repeat(4, 1fr); }
  .scope-cards li { min-height: 215px; }
  .package-targets { grid-template-columns: repeat(4, 1fr); }
  .application-cta__inner { grid-template-columns: 1fr auto; align-items: center; }
  .application-cta__actions { max-width: 420px; flex-direction: column; }
  .site-footer__offices { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 374px) {
  .container { width: min(100% - 28px, var(--container-max)); }
  .hero h1 { font-size: 2rem; }
  .hero__tags { gap: 6px; }
  .hero__tags li { padding: 6px 9px; }
  .scope-cards li, .design-points { padding: 20px; }
  .naming__visuals { grid-template-columns: 1fr; }
  .naming__stick img { max-height: 420px; }
  .timeline li { grid-template-columns: 74px 1fr; gap: 12px; }
}

@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; }
  .button:hover { transform: none; }
}