@charset "UTF-8";
:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  font-synthesis: none;
  --ink: #203e4e;
  --muted: #5f747e;
  --teal: #237d83;
  --blue: #4283b6;
  --line: #dce6e8;
  --mist: #f4f8f8;
  color: var(--ink);
  background: #fff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; font-size: 15px; line-height: 1.8; }
h1, h2, h3, p, figure, ol, ul { margin: 0; }
h1, h2, h3 { font-weight: 650; }
img, svg { max-width: 100%; }
a { color: inherit; text-decoration: none; touch-action: manipulation; }
a, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, summary:focus-visible { outline: 3px solid #257dba; outline-offset: 5px; border-radius: 3px; }
main:focus { outline: none; }
.section-shell { width: min(1200px, calc(100% - 80px)); margin-inline: auto; }
.skip-link { position: absolute; left: 16px; top: 12px; z-index: 10; padding: 10px 18px; min-height: 44px; color: #fff; background: #245a76; transform: translateY(-180%); }
.skip-link:focus { transform: none; }
.site-header { border-bottom: 1px solid var(--line); background: #fff; }
.header-inner { min-height: 84px; width: min(1360px, calc(100% - 64px)); margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand-group { display: flex; align-items: center; gap: 19px; flex: 0 0 auto; }
.brand, .brand-credit, .footer-brand { display: inline-flex; align-items: center; min-height: 44px; }
.brand img, .footer-brand img { width: 82px; height: auto; display: block; }
.brand-credit { gap: 5px; font-size: 10px; color: var(--muted); }
.brand-credit strong { color: #486775; font-size: 12px; font-weight: 600; }
.header-nav { display: flex; align-items: center; gap: 25px; }
.header-nav a { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 44px; padding: 8px 3px; font-size: 12px; white-space: nowrap; }
.header-nav .header-cta { padding-inline: 20px; border: 1px solid #bcd4d9; border-radius: 5px; color: var(--teal); background: #f6fbfb; }
.header-nav a:hover, .brand-credit:hover strong, .site-footer a:hover { color: var(--teal); text-decoration: underline; text-underline-offset: 4px; }
.hero { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr); align-items: center; gap: 34px; padding-block: 82px 74px; }
.eyebrow { display: flex; align-items: center; gap: 9px; color: #527881; font-size: 10px; font-weight: 650; line-height: 1.5; letter-spacing: .17em; }
.eyebrow > span { width: 6px; height: 6px; background: #40a1a1; border-radius: 50%; }
.hero h1 { font-size: clamp(30px, 3.25vw, 46px); line-height: 1.65; letter-spacing: -.025em; margin-top: 23px; }
.hero h1 > span { color: var(--teal); }
.hero-lead { color: var(--muted); line-height: 2; margin-top: 24px; font-size: 15px; }
.mobile-break { display: none; }
.hero-actions { margin-top: 32px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 32px; min-height: 58px; max-width: 100%; padding: 15px 24px; border-radius: 5px; font-size: 14px; font-weight: 600; line-height: 1.6; transition: background .15s, box-shadow .15s; }
.button-primary { color: #fff; background: #267b82; box-shadow: 0 7px 17px #23575f10; }
.button-primary:hover { background: #1a626d; box-shadow: 0 9px 22px #23575f22; }
.button > span { flex: 0 0 auto; font-size: 18px; font-weight: 400; }
.external-note { color: var(--muted); font-size: 10px; line-height: 1.9; margin-top: 11px; }
.text-link { display: inline-flex; align-items: center; gap: 20px; min-height: 44px; max-width: 100%; color: #2d7182; font-size: 14px; line-height: 1.7; }
.text-link > span { flex: 0 0 auto; font-size: 16px; }
.text-link:hover { text-decoration: underline; text-underline-offset: 5px; }
.section-jump { margin-top: 15px; color: #607985; font-size: 14px; }
.hero-visual { min-width: 0; margin-left: 4px; position: relative; }
.visual-heading { display: flex; justify-content: space-between; gap: 12px; padding: 0 12px 10px; border-bottom: 1px solid var(--line); color: #66828c; font-size: 9px; letter-spacing: .12em; }
.visual-index { color: #718c95; white-space: nowrap; }
.reservoir-visual { width: 100%; height: auto; display: block; }
.hero-visual figcaption { position: relative; padding: 7px 12px 0 38px; color: #54717d; font-size: 11px; line-height: 1.8; }
.hero-visual figcaption small { display: block; color: #788b93; font-size: 9px; margin-top: 4px; }
.figure-rule { position: absolute; left: 12px; top: 16px; width: 15px; height: 1px; background: #7da2ad; }
.topic-strip { border-block: 1px solid var(--line); }
.topic-strip > div { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 24px; }
.topic-strip p { color: #607680; font-size: 14px; }
.topic-strip ul { display: flex; flex-wrap: wrap; padding: 0; list-style: none; gap: 12px 34px; font-size: 14px; }
.topic-strip li { display: flex; align-items: center; gap: 10px; }
.topic-strip li::before { content: ""; width: 4px; height: 4px; flex: 0 0 4px; border: 1px solid #548fa1; border-radius: 50%; }
.product-section { background: var(--mist); padding-block: 90px; }
.product-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 90px; }
.section-heading h2 { font-size: clamp(26px, 2.5vw, 34px); line-height: 1.6; letter-spacing: -.015em; margin-top: 19px; }
.section-heading > p:not(.eyebrow) { margin-top: 22px; color: var(--muted); font-size: 15px; line-height: 2; }
.section-heading > .text-link { margin-top: 23px; }
.product-features { list-style: none; padding: 0; }
.product-features li { display: flex; gap: 20px; padding-block: 24px; border-bottom: 1px solid #d5e2e4; }
.product-features li:first-child { padding-top: 0; }
.feature-number { color: #61959e; font-size: 11px; letter-spacing: .05em; margin-top: 3px; }
.product-features h3 { font-size: 17px; font-weight: 600; }
.product-features p { font-size: 15px; color: var(--muted); line-height: 1.9; margin-top: 7px; }
.product-note { font-size: 14px; line-height: 1.9; color: #637b85; margin-top: 20px; }
.product-note strong { display: block; margin-bottom: 3px; font-weight: 600; }
.themes-section { padding-block: 94px; }
.themes-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 35px; margin-bottom: 42px; }
.themes-heading > p { margin: 0 0 4px; }
.theme-list { border-top: 1px solid #b9d1d7; }
.theme-row { display: grid; grid-template-columns: 70px minmax(0, 1fr) minmax(0, 1.44fr); column-gap: 26px; padding-block: 36px; border-bottom: 1px solid var(--line); }
.theme-number { color: #8aaab5; font-size: 33px; font-weight: 300; line-height: 1.4; font-variant-numeric: tabular-nums; }
.theme-category { font-size: 9px; line-height: 1.5; letter-spacing: .12em; color: #65919f; margin-bottom: 10px; }
.theme-title h3 { font-size: 24px; line-height: 1.65; font-weight: 600; }
.theme-description > p { color: var(--muted); font-size: 15px; line-height: 2; }
.theme-tags { display: flex; flex-wrap: wrap; list-style: none; padding: 0; gap: 6px 16px; margin-top: 18px; color: #4e7b87; font-size: 10px; }
.theme-tags li::before { content: "/"; color: #96b4bd; margin-right: 7px; }
.technology-section { background: #203e4c; color: #fff; position: relative; overflow: hidden; }
.technology-section::before { content: ""; position: absolute; left: -80px; top: -240px; width: 600px; height: 600px; border: 1px solid #c0eceb0d; border-radius: 50%; box-shadow: 0 0 0 70px #c0eceb05, 0 0 0 140px #c0eceb03; pointer-events: none; }
.technology-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 90px; padding-block: 70px; position: relative; }
.technology-section .eyebrow { color: #94c3c6; }
.technology-section h2 { font-size: clamp(26px, 2.5vw, 34px); line-height: 1.7; margin-top: 21px; }
.technology-copy > p { color: #d0dfe4; font-size: 15px; line-height: 2; }
.technology-copy .technology-note { color: #a8c0c9; font-size: 14px; margin-top: 14px; }
.text-link-light { color: #b6e0e0; margin-top: 17px; }
.technology-section a:focus-visible { outline-color: #a4dded; }
.process-section { padding-block: 94px 74px; }
.process-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; padding: 0; margin-top: 40px; list-style: none; }
.process-number { display: flex; align-items: center; gap: 18px; font-size: 11px; color: #5092a4; }
.process-number > span { height: 1px; flex: 1; background: #d2e2e6; }
.process-list h3 { margin-top: 19px; font-size: 18px; font-weight: 600; }
.process-list p { margin-top: 11px; color: var(--muted); font-size: 15px; line-height: 2; }
.process-note { margin-top: 28px; color: #70858f; font-size: 14px; }
.faq-section { display: grid; grid-template-columns: minmax(0, .65fr) minmax(0, 1.35fr); gap: 70px; padding-block: 55px 94px; border-top: 1px solid var(--line); }
.faq-list { border-top: 1px solid #c5d8df; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 23px 3px; min-height: 64px; cursor: pointer; font-size: 15px; font-weight: 600; list-style: none; line-height: 1.9; touch-action: manipulation; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary > span { flex: 0 0 14px; position: relative; height: 14px; }
.faq-list summary > span::before, .faq-list summary > span::after { content: ""; display: block; position: absolute; background: #5f92a3; }
.faq-list summary > span::before { width: 14px; height: 1px; top: 6px; }
.faq-list summary > span::after { width: 1px; height: 14px; left: 6px; }
.faq-list details[open] summary > span::after { display: none; }
.faq-list summary:hover { color: var(--teal); }
.faq-answer { padding: 0 30px 23px 3px; color: var(--muted); font-size: 15px; line-height: 2; }
.contact-section { background: #eaf4f3; border-block: 1px solid #d8e8e7; }
.contact-layout { display: flex; align-items: center; justify-content: space-between; gap: 60px; padding-block: 70px; }
.contact-layout h2 { font-size: clamp(34px, 3vw, 42px); line-height: 1.6; margin-top: 17px; }
.contact-layout > div > p:not(.eyebrow) { margin-top: 19px; color: #587781; font-size: 15px; line-height: 2; }
.contact-action { min-width: 300px; text-align: center; }
.contact-action .button { width: 100%; }
.contact-action .text-link { margin-top: 13px; font-size: 14px; }
.site-footer { background: #fff; }
.footer-inner { min-height: 110px; display: flex; align-items: center; gap: 28px; }
.footer-brand img { width: 72px; }
.site-footer p { color: #70868f; font-size: 11px; }
.site-footer a:not(.footer-brand) { display: inline-flex; align-items: center; gap: 14px; min-height: 44px; color: #4c6d7a; font-size: 12px; margin-left: auto; }
.site-footer small { color: #7b8d95; font-size: 9px; }

@media (min-width: 1450px) {
  .hero { padding-block: 104px 94px; }
  .hero h1 { font-size: 45px; }
}
@media (max-width: 1050px) {
  .section-shell { width: calc(100% - 56px); }
  .header-inner { width: calc(100% - 48px); }
  .hero { gap: 16px; padding-block: 65px; }
  .hero h1 { font-size: 32px; }
  .hero-lead { font-size: 15px; }
  .product-layout, .technology-layout { gap: 50px; }
  .topic-strip > div { align-items: flex-start; gap: 15px; }
  .topic-strip ul { gap: 12px 18px; }
  .theme-row { grid-template-columns: 50px minmax(0, 1fr) minmax(0, 1.4fr); gap: 22px; }
  .theme-title h3 { font-size: 21px; }
  .process-list { gap: 27px; }
  .faq-section { gap: 38px; }
}
@media (max-width: 800px) {
  .header-inner { flex-wrap: wrap; gap: 0 16px; padding-block: 12px; }
  .header-nav { gap: 15px; }
  .header-nav a { font-size: 11px; }
  .header-nav .header-cta { padding-inline: 15px; }
  .hero { grid-template-columns: 1fr; gap: 45px; padding-block: 56px 50px; }
  .hero h1 { font-size: 42px; line-height: 1.6; }
  .hero-lead { font-size: 15px; }
  .hero-visual { width: min(510px, 100%); justify-self: center; margin-left: 0; }
  .hero-actions { margin-top: 28px; }
  .hero-visual figcaption { padding-bottom: 0; }
  .topic-strip > div { flex-direction: column; gap: 10px; padding-block: 20px; }
  .topic-strip ul { gap: 12px 24px; flex-wrap: wrap; }
  .product-section, .themes-section { padding-block: 66px; }
  .product-layout, .technology-layout { grid-template-columns: 1fr; gap: 36px; }
  .product-detail { max-width: 580px; }
  .section-heading h2 { font-size: 30px; }
  .themes-heading { align-items: flex-start; flex-direction: column; gap: 19px; margin-bottom: 30px; }
  .themes-heading > p { margin: 0; }
  .theme-row { grid-template-columns: 38px minmax(0, 1fr) minmax(0, 1.35fr); gap: 20px; padding-block: 30px; }
  .theme-number { font-size: 27px; }
  .theme-title h3 { font-size: 20px; }
  .theme-description > p { font-size: 15px; }
  .technology-layout { padding-block: 54px; gap: 25px; }
  .technology-section h2 { font-size: 30px; }
  .technology-copy { max-width: 610px; }
  .process-section { padding-block: 66px 54px; }
  .process-list { gap: 24px; }
  .process-list h3 { font-size: 16px; }
  .faq-section { grid-template-columns: 1fr; gap: 28px; padding-block: 48px 66px; }
  .contact-layout { gap: 36px; padding-block: 56px; }
  .contact-layout h2 { font-size: 32px; }
  .contact-action { min-width: 270px; }
  .footer-inner { gap: 18px; flex-wrap: wrap; padding-block: 25px; }
  .site-footer p { font-size: 10px; }
}
@media (max-width: 580px) {
  .section-shell, .header-inner { width: calc(100% - 40px); }
  .header-inner { padding-block: 10px; }
  .brand-group { width: 100%; justify-content: space-between; gap: 14px; }
  .brand img { width: 74px; }
  .header-nav { width: 100%; justify-content: space-between; gap: 8px; padding-top: 4px; }
  .header-nav a { gap: 6px; font-size: 10px; }
  .header-nav .header-cta { padding-inline: 15px; }
  .hero { padding-block: 39px 37px; gap: 32px; }
  .eyebrow { font-size: 8px; letter-spacing: .12em; }
  .hero h1 { font-size: clamp(26px, 7.5vw, 36px); line-height: 1.7; margin-top: 18px; letter-spacing: -.035em; }
  .hero-lead { font-size: 14px; line-height: 2; margin-top: 18px; }
  .mobile-break { display: initial; }
  .hero-actions { margin-top: 25px; }
  .button { padding-inline: 19px; gap: 20px; min-height: 56px; font-size: 14px; }
  .hero-actions .button { width: 100%; }
  .external-note { font-size: 9px; }
  .section-jump { margin-top: 8px; font-size: 14px; }
  .visual-heading { font-size: 7px; padding-inline: 0; }
  .hero-visual figcaption { padding-left: 22px; padding-right: 0; font-size: 10px; }
  .hero-visual figcaption small { font-size: 8px; }
  .figure-rule { left: 0; width: 12px; top: 15px; }
  .topic-strip p { font-size: 14px; }
  .topic-strip ul { gap: 8px 15px; font-size: 14px; }
  .topic-strip li { gap: 6px; }
  .product-section, .themes-section { padding-block: 48px; }
  .product-layout { gap: 29px; }
  .section-heading h2 { font-size: 25px; line-height: 1.65; margin-top: 15px; }
  .section-heading > p:not(.eyebrow) { margin-top: 17px; font-size: 14px; }
  .section-heading > .text-link { margin-top: 14px; }
  .desktop-break { display: none; }
  .product-features li { gap: 15px; padding-block: 19px; }
  .product-features h3 { font-size: 16px; }
  .product-features p { font-size: 14px; }
  .product-note { font-size: 14px; }
  .themes-heading { gap: 15px; }
  .theme-row { grid-template-columns: 34px minmax(0, 1fr); gap: 0 15px; padding-block: 25px; }
  .theme-number { font-size: 25px; }
  .theme-category { font-size: 8px; margin-bottom: 7px; }
  .theme-title h3 { font-size: 22px; line-height: 1.6; }
  .theme-title h3 br { display: none; }
  .theme-description { grid-column: 2; margin-top: 14px; }
  .theme-description > p { font-size: 14px; }
  .theme-tags { font-size: 9px; gap: 5px 12px; margin-top: 12px; }
  .technology-layout { padding-block: 45px; gap: 23px; }
  .technology-section h2 { font-size: 25px; margin-top: 17px; }
  .technology-copy > p { font-size: 14px; }
  .technology-copy .technology-note { font-size: 14px; }
  .text-link-light { font-size: 14px; gap: 13px; }
  .process-section { padding-block: 48px 40px; }
  .process-list { grid-template-columns: 1fr; gap: 26px; margin-top: 29px; }
  .process-list h3 { margin-top: 12px; font-size: 17px; }
  .process-list p { font-size: 14px; margin-top: 7px; }
  .process-note { font-size: 14px; margin-top: 23px; }
  .faq-section { gap: 23px; padding-block: 37px 48px; }
  .faq-list summary { font-size: 14px; gap: 20px; padding-block: 19px; }
  .faq-answer { font-size: 14px; padding-right: 16px; padding-bottom: 19px; }
  .contact-layout { flex-direction: column; align-items: stretch; gap: 27px; padding-block: 44px; }
  .contact-layout h2 { font-size: 32px; margin-top: 14px; }
  .contact-layout > div > p:not(.eyebrow) { font-size: 14px; margin-top: 15px; }
  .contact-action { min-width: 0; text-align: left; }
  .contact-action .external-note { font-size: 9px; }
  .contact-action .text-link { margin-top: 7px; }
  .footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 7px 12px; padding-block: 24px; }
  .footer-brand img { width: 68px; }
  .site-footer p { grid-column: 1; grid-row: 2; font-size: 9px; }
  .site-footer a:not(.footer-brand) { grid-column: 2; grid-row: 1; font-size: 11px; }
  .site-footer small { grid-column: 2; grid-row: 2; font-size: 8px; text-align: right; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}