:root {
  color-scheme: light;
  --ink: #302a27;
  --muted: #6a5e57;
  --paper: #fbfaf7;
  --white: #fff;
  --line: #e6ddd4;
  --green: #eaf3ee;
  --gold: #d6a23f;
  --accent: #bd3f2c;
  --leaf: #4f715d;
  --serif: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif; line-height: 1.9; line-break: strict; overflow-wrap: break-word; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-underline-offset: .28em; }
a:hover { color: var(--accent); }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; border-radius: 2px; }
h1, h2, h3, p, dl, figure { margin: 0; }
h1, h2 { font-family: var(--serif); font-weight: 700; }
h1 { font-size: clamp(2.2rem, 4.4vw, 4rem); line-height: 1.35; }
h2 { margin-bottom: 22px; font-size: clamp(1.7rem, 2.5vw, 2.2rem); line-height: 1.55; text-wrap: balance; }
h3 { font-size: 1.2rem; line-height: 1.6; }
p + p { margin-top: 18px; }
p { color: var(--muted); }
[id] { scroll-margin-top: 118px; }
.container, .header-inner, .footer-inner { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.narrow { max-width: 800px; }
.section { padding: 78px 0; border-bottom: 1px solid var(--line); }
.white-section { background: var(--white); }
.research-band { background: linear-gradient(100deg, var(--green), #f8f6f2 76%); }
.section-heading { max-width: 780px; margin-bottom: 36px; }
.section-heading h2 { margin-bottom: 12px; }
.eyebrow { margin: 0 0 10px; color: var(--accent); font-size: .75rem; font-weight: 800; line-height: 1.5; }
.note { font-size: .86rem; line-height: 1.85; }
.phrase { display: inline-block; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link { position: absolute; z-index: 30; top: -100px; left: 16px; padding: 8px 14px; background: var(--ink); color: white; }
.skip-link:focus { top: 10px; color: white; }
.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid var(--line); background: rgba(251, 250, 247, .97); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 90px; }
.brand { display: inline-flex; align-items: center; flex-shrink: 0; gap: 10px; text-decoration: none; }
.brand img { width: 42px; height: 42px; }
.wordmark { display: flex; align-items: baseline; gap: 8px; font-size: 1.45rem; font-weight: 800; line-height: 1.2; }
.wordmark span { font-size: .72rem; font-weight: 700; }
.site-header nav { display: flex; align-items: center; gap: 24px; }
.site-header nav a { display: inline-flex; align-items: center; min-height: 44px; color: var(--muted); font-size: .85rem; white-space: nowrap; text-decoration: none; font-weight: 600; }
.site-header nav a:hover, .site-header nav a[aria-current] { color: var(--accent); }
.hero { position: relative; isolation: isolate; overflow: hidden; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, #fffdfa, var(--paper) 72%); }
.hero::after { content: ""; position: absolute; z-index: -1; left: -8%; right: -8%; bottom: -92px; height: 250px; border-radius: 50% 50% 0 0 / 34% 34% 0 0; background: rgba(234, 243, 238, .78); transform: rotate(-1.2deg); }
.hero-inner { display: grid; align-items: center; min-height: 650px; padding-block: 80px 90px; }
.hero-copy { max-width: 100%; }
.hero h1 { font-size: clamp(2.5rem, 5.7vw, 5.125rem); line-height: 1.22; }
.hero-line { display: block; }
.hero-watermark { position: absolute; z-index: -1; right: max(44px, calc((100vw - 1120px) / 2)); top: 120px; width: 340px; opacity: .065; pointer-events: none; }
.brand-rule { display: flex; align-items: center; gap: 14px; width: min(420px, 100%); margin-top: 26px; }
.brand-rule span { flex: 1; height: 2px; background: var(--gold); }
.brand-rule i { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.brand-rule i:last-child { width: 6px; height: 6px; background: var(--gold); }
.lead { max-width: 100%; margin-top: 30px; font-size: 1.06rem; line-height: 2; }
.lead p, .body-lead p { text-wrap: pretty; }
.lead p + p { margin-top: 8px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.tag { display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.8); font-size: .76rem; color: var(--muted); font-weight: 700; }
.tag::before, .product-status::before { content: ""; width: 7px; height: 7px; flex-shrink: 0; border-radius: 50%; background: var(--leaf); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 10px 20px; border: 1px solid var(--accent); border-radius: 4px; background: var(--accent); color: white; font-size: .9rem; font-weight: 700; text-decoration: none; }
.button:hover { color: white; background: #a73323; border-color: #a73323; }
.button.secondary { color: var(--ink); background: var(--white); border-color: var(--line); }
.button.secondary:hover { color: var(--accent); border-color: var(--accent); }
.text-link { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; margin-top: 18px; color: var(--accent); font-size: .94rem; font-weight: 700; text-decoration-thickness: 1px; }
.actions .text-link { margin-top: 0; }
.service-layout { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.service-block { padding: 30px; border: 1px solid var(--line); border-radius: 6px; background: var(--white); }
.service-number { display: inline-grid; place-items: center; width: 42px; height: 42px; border: 1px solid #deb2a8; border-radius: 50%; color: var(--accent); font-size: .8rem; font-weight: 700; margin-bottom: 22px; }
.service-block h3 { margin-bottom: 12px; }
.product-layout { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: 50px; align-items: center; }
.product-name { margin-bottom: 10px; font-size: 2.9rem; }
.product-type { font-weight: 700; color: var(--ink); }
.product-status { display: flex; align-items: center; gap: 9px; color: var(--leaf); font-size: .88rem; font-weight: 700; margin-top: 22px; }
.platform-roadmap { margin-top: 8px; }
.product-copy .note { margin-top: 24px; }
.product-media img { width: 100%; border: 1px solid var(--line); border-radius: 6px; background: white; }
.product-media figcaption { margin-top: 10px; color: var(--muted); font-size: .75rem; }
.split { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 64px; }
.split > *, .product-layout > *, .company-contact > * { min-width: 0; }
.patent-note { margin-top: 26px; padding: 16px 20px; border-left: 3px solid var(--gold); background: #fff8e7; color: var(--ink); font-size: .9rem; font-weight: 600; }
.news-list { border-top: 1px solid var(--line); }
.news-item { display: grid; grid-template-columns: 154px 84px minmax(0, 1fr); gap: 24px; align-items: start; padding: 24px 0; border-bottom: 1px solid var(--line); }
.news-date { color: var(--muted); font-size: .85rem; font-variant-numeric: tabular-nums; line-height: 1.7; }
.news-date span { display: block; font-size: .7rem; }
.news-category { margin: 0; color: var(--accent); font-weight: 700; font-size: .8rem; line-height: 1.8; }
.news-item h3 { font-family: inherit; font-size: .96rem; font-weight: 500; line-height: 1.8; }
.news-link { display: inline-block; text-decoration: none; }
.news-link:hover { text-decoration: underline; }
.company-contact { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .8fr); gap: 64px; }
.details { margin-top: 28px; border-top: 1px solid var(--line); }
.detail-row { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.detail-row dt { color: var(--muted); font-size: .9rem; font-weight: 600; }
.detail-row dd { margin: 0; min-width: 0; }
.compact-details .detail-row { padding: 16px 0; grid-template-columns: 100px minmax(0, 1fr); }
.contact-panel { padding: 32px; border: 1px solid var(--line); border-radius: 6px; background: linear-gradient(180deg, white, #edf2f5); }
.contact-panel h2 { font-size: 1.65rem; margin-bottom: 18px; }
.contact-email { display: inline-block; margin-top: 16px; color: var(--ink); font-weight: 700; font-size: 1.1rem; overflow-wrap: anywhere; }
.contact-note { margin-top: 24px; }
.page-intro { padding: 70px 0; border-bottom: 1px solid var(--line); background: linear-gradient(110deg, #f1f5ef, #fbfaf7 70%); }
.page-intro h1 { margin-bottom: 20px; }
.intro-sub { max-width: 760px; font-size: 1.1rem; }
.body-lead { font-size: 1.1rem; line-height: 2; }
.developer-profile { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 40px; padding-top: 30px; margin-top: 30px; border-top: 1px solid var(--line); }
.profile-role { font-size: .86rem; }
.person-name { margin-top: 6px; font-family: var(--serif); font-size: 1.7rem; }
.credential { margin-top: 8px; font-size: .85rem; font-weight: 600; }
.conference-list { display: grid; gap: 30px; }
.conference-card { border: 1px solid var(--line); border-radius: 6px; padding: 30px; background: var(--paper); }
.conference-card h3 { margin-top: 12px; }
.conference-title { margin-top: 20px; font-weight: 600; color: var(--ink); }
.conference-card .detail-row { grid-template-columns: 120px minmax(0, 1fr); }
.product-intro { display: grid; grid-template-columns: minmax(0, 1fr) 200px; gap: 80px; align-items: center; }
.product-intro > div > p:not(.eyebrow) { max-width: 690px; }
.product-logo { width: 200px; }
.product-fullscreen { max-width: 800px; margin-inline: auto; }
.purpose-note { width: 100%; margin-top: 50px; }
.purpose-note h2 { font-size: 1.7rem; }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 50px; }
.feature { padding-top: 26px; border-top: 1px solid var(--line); }
.feature h3 { margin-bottom: 12px; }
.document-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 26px; }
.document-link { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 16px 18px; border: 1px solid var(--line); border-radius: 4px; background: white; text-decoration: none; font-weight: 600; font-size: .92rem; }
.document-format { flex-shrink: 0; font-size: .75rem; color: var(--muted); }
.prose h2 { margin: 36px 0 14px; font-family: inherit; font-size: 1.3rem; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin: 28px 0 12px; font-size: 1.12rem; }
.prose a { overflow-wrap: anywhere; }
.site-footer { padding: 32px 0; background: var(--ink); color: #fff; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px 30px; }
.footer-brand { font-size: 1rem; font-weight: 700; text-decoration: none; }
.footer-links { display: flex; flex-wrap: wrap; gap: 14px 24px; font-size: .8rem; }
.footer-links a { color: #ece6e2; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.site-footer small { color: #d0c8c2; font-size: .7rem; }
@media (max-width: 1050px) {
  .header-inner { flex-wrap: wrap; gap: 4px 20px; padding-block: 12px 6px; }
  .site-header nav { flex: 1; justify-content: flex-end; flex-wrap: wrap; gap: 0 20px; }
  .product-layout { gap: 32px; }
  .split, .company-contact { gap: 36px; }
  .service-block { padding: 24px; }
}
@media (max-width: 860px) {
  .header-inner { align-items: flex-start; flex-direction: column; gap: 8px; }
  .site-header nav { width: 100%; justify-content: flex-start; gap: 0 24px; }
  [id] { scroll-margin-top: 150px; }
  .hero-inner { min-height: 540px; padding-block: 64px 72px; }
  .hero-watermark { right: -55px; top: 90px; width: 300px; opacity: .045; }
  .hero-copy { max-width: 690px; }
  .lead { max-width: 640px; }
  .product-layout { grid-template-columns: 1fr; gap: 34px; }
  .product-copy { max-width: 680px; }
  .product-media { width: 100%; }
  .service-layout { gap: 16px; }
  .service-block { padding: 20px; }
  .service-block h3 { font-size: 1.05rem; }
  .service-block p { font-size: .92rem; }
  .split, .company-contact { grid-template-columns: 1fr; gap: 30px; }
  .split h2 { max-width: 480px; }
  .news-item { grid-template-columns: 140px 76px minmax(0, 1fr); gap: 18px; }
  .product-intro { grid-template-columns: minmax(0, 1fr) 130px; gap: 30px; }
  .product-logo { width: 130px; }
}
@media (max-width: 620px) {
  .container, .header-inner, .footer-inner { width: calc(100% - 40px); }
  .site-header { position: relative; }
  .header-inner { gap: 12px; padding-block: 16px 8px; }
  .brand img { width: 38px; height: 38px; }
  .wordmark { font-size: 1.35rem; }
  .site-header nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 8px; }
  .site-header nav a { justify-content: flex-start; min-height: 40px; font-size: .78rem; }
  [id] { scroll-margin-top: 24px; }
  .section { padding: 52px 0; }
  .hero-inner { min-height: auto; padding-block: 48px 60px; }
  .hero h1 { font-size: clamp(2rem, 9.6vw, 2.75rem); line-height: 1.35; }
  .hero-watermark { top: 46px; right: -64px; width: 240px; opacity: .04; }
  .brand-rule { width: min(290px, 100%); margin-top: 22px; }
  .lead { font-size: .98rem; margin-top: 24px; line-height: 2; }
  .hero-tags { gap: 8px; margin-top: 20px; }
  .tag { font-size: .7rem; padding: 5px 10px; }
  .actions { gap: 10px; margin-top: 24px; }
  .button { padding: 10px 14px; font-size: .84rem; }
  h2 { font-size: 1.65rem; }
  .service-layout, .feature-grid, .document-links { grid-template-columns: 1fr; }
  .service-block { padding: 24px; }
  .service-block h3 { font-size: 1.2rem; }
  .service-block p { font-size: 1rem; }
  .service-number { margin-bottom: 16px; }
  .product-name { font-size: 2.5rem; }
  .product-copy .actions { flex-direction: column; align-items: flex-start; }
  #usage .actions { flex-direction: column; align-items: flex-start; }
  .news-item { grid-template-columns: minmax(0, 1fr) auto; gap: 10px 16px; }
  .news-item > div:last-child { grid-column: 1 / -1; }
  .news-date { display: flex; flex-wrap: wrap; gap: 8px; align-items: baseline; }
  .detail-row, .conference-card .detail-row { grid-template-columns: 1fr; gap: 5px; padding-block: 16px; }
  .compact-details .detail-row { grid-template-columns: 72px minmax(0, 1fr); gap: 10px; }
  .contact-panel { padding: 24px; }
  .contact-email { font-size: 1rem; }
  .page-intro { padding: 48px 0; }
  .intro-sub, .body-lead { font-size: 1rem; }
  .developer-profile { grid-template-columns: 1fr; gap: 22px; }
  .conference-card { padding: 22px; }
  .product-intro { grid-template-columns: 1fr; gap: 24px; }
  .product-logo { width: 100px; grid-row: 1; }
  .purpose-note { margin-top: 32px; }
  .footer-inner { align-items: flex-start; flex-direction: column; gap: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}