:root {
  --titanium-white: #F2F4F5;
  --pale-aluminum: #E5E9EC;
  --bright-surface: #FAFBFB;
  --graphite: #171B1E;
  --gunmetal: #3E474D;
  --steel-blue: #315A73;
  --steel-blue-deep: #24485F;
  --border-silver: #C5CDD2;
  --deep-stage: #151A1E;
  --deep-stage-2: #0F1518;
  --pale-text: #DDE4E8;
  --muted-light: #65737B;
  --muted-dark: #AAB6BC;
  --shell-max: 1280px;
  --gutter: 48px;
  --display-font: Bahnschrift, "Segoe UI Variable", "Segoe UI", sans-serif;
  --body-font: "Segoe UI Variable", "Segoe UI", sans-serif;
  --technical-font: Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }
html { background: #DDE3E6; scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: #DDE3E6; color: var(--graphite); font-family: var(--body-font); font-size: 16px; line-height: 1.58; overflow-x: clip; }
a { color: inherit; }
img { display: block; max-width: 100%; }
button, input, summary { font: inherit; }
::selection { color: #fff; background: var(--steel-blue); }

.page-shell { width: 100%; max-width: var(--shell-max); margin-inline: auto; background: var(--bright-surface); box-shadow: 0 0 0 1px rgba(23,27,30,.04); }
.content-frame { width: calc(100% - (var(--gutter) * 2)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 100; left: 12px; top: 12px; transform: translateY(-160%); padding: 10px 14px; background: var(--graphite); color: #fff; font-weight: 700; text-decoration: none; }
.skip-link:focus { transform: translateY(0); outline: 3px solid #fff; outline-offset: 3px; }

.site-header { min-height: 96px; padding-inline: var(--gutter); display: grid; grid-template-columns: minmax(0,1fr) auto minmax(0,1fr); align-items: center; gap: 24px; position: relative; z-index: 20; background: var(--bright-surface); border-bottom: 1px solid var(--border-silver); }
.brand { display: inline-flex; align-items: center; min-height: 44px; width: max-content; gap: 13px; color: var(--graphite); text-decoration: none; }
.brand-mark { width: 32px; height: 32px; flex: none; }
.brand-name { font-family: var(--technical-font); font-size: 18px; font-weight: 700; letter-spacing: .15em; white-space: nowrap; }
.desktop-nav { display: flex; align-items: stretch; align-self: stretch; }
.desktop-nav a { display: inline-flex; align-items: center; position: relative; min-height: 96px; padding: 0 13px; color: #202B31; font-size: 14px; font-weight: 700; text-decoration: none; white-space: nowrap; }
.desktop-nav a::after { content: ""; position: absolute; inset: auto 13px 0; height: 2px; background: transparent; }
.desktop-nav a:hover::after, .desktop-nav a.active::after { background: var(--steel-blue); }
.header-action { justify-self: end; }

.cut-action { min-height: 48px; display: inline-flex; align-items: center; justify-content: space-between; gap: 32px; padding: 12px 18px 12px 20px; background: var(--graphite); color: #fff; clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%); border-left: 4px solid var(--steel-blue); font-size: 14px; font-weight: 800; line-height: 1.2; text-decoration: none; transition: background .18s ease, border-color .18s ease; }
.cut-action:hover { background: #26333A; border-left-color: #6F9BB5; }
.cut-action.primary { min-height: 52px; }
.cut-action b, .text-action b { color: #8FBAD2; font-size: 18px; font-weight: 400; }
.text-action { min-height: 48px; display: inline-flex; align-items: center; gap: 26px; color: var(--graphite); border-bottom: 1px solid #87959C; font-size: 15px; font-weight: 800; line-height: 1.2; text-decoration: none; }
.text-action:hover { color: var(--steel-blue-deep); border-bottom-color: var(--steel-blue); }
.mobile-menu { display: none; }

.mobile-navigation { position: fixed; z-index: 90; inset: 0; overflow-y: auto; padding: 118px 22px 34px; background: var(--titanium-white); color: var(--graphite); }
.mobile-navigation[hidden] { display: none; }
.mobile-navigation a { min-height: 52px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border-silver); color: var(--graphite); font-size: 17px; font-weight: 700; text-decoration: none; }
.mobile-navigation a[aria-current="page"] { color: var(--steel-blue-deep); }
.mobile-navigation .mobile-navigation-action { margin-top: 30px; padding: 0 17px; min-height: 54px; background: var(--graphite); border-bottom: 0; color: #fff; clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%, 0 0); }
html.mobile-navigation-open { overflow: hidden; }
body.mobile-navigation-open { position: fixed; width: 100%; overflow: hidden; }

.integration-hero { display: grid; grid-template-columns: 46% 54%; grid-template-areas: "copy stage" "actions stage"; background: var(--titanium-white); }
.hero-copy { grid-area: copy; padding: 88px 48px 26px var(--gutter); }
.hero-copy h1 { max-width: 535px; margin: 22px 0 27px; font-family: var(--display-font); font-size: clamp(46px, 4.4vw, 63px); font-weight: 800; letter-spacing: -.06em; line-height: .99; }
h1 em, h2 em { color: var(--gunmetal); font-style: normal; font-weight: 470; }
.hero-copy .body-lead { max-width: 530px; margin: 0; color: #47545A; font-size: 17px; line-height: 1.7; }
.eyebrow, .section-kicker { display: flex; align-items: center; gap: 12px; margin: 0; color: var(--steel-blue-deep); font-family: var(--technical-font); font-size: 12px; font-weight: 700; letter-spacing: .105em; line-height: 1.2; }
.eyebrow i { display: block; width: 34px; height: 2px; background: var(--steel-blue); }
.hero-actions { grid-area: actions; padding: 0 48px 64px var(--gutter); align-self: end; }
.hero-actions-row { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; }
.working-line { display: flex; align-items: center; gap: 28px; margin-top: 28px; padding: 17px 0; border-top: 1px solid var(--border-silver); border-bottom: 1px solid var(--border-silver); }
.working-line small, .section-index p, .section-kicker { font-family: var(--technical-font); font-size: 12px; font-weight: 700; letter-spacing: .09em; }
.working-line small { color: var(--steel-blue-deep); white-space: nowrap; }
.working-line p { display: flex; flex-wrap: wrap; gap: 9px; margin: 0; color: #4E5A60; font-size: 14px; }
.working-line i { color: var(--steel-blue); font-style: normal; }

.hero-stage { grid-area: stage; min-height: 722px; position: relative; overflow: hidden; padding: 38px 46px; background: radial-gradient(ellipse 58% 48% at 55% 42%, rgba(65,100,121,.32) 0%, rgba(42,59,69,.12) 44%, transparent 74%), linear-gradient(133deg, var(--deep-stage-2) 0%, var(--deep-stage) 65%, #1B2429 100%); color: #fff; }
.hero-stage::before { content: ""; position: absolute; inset: 0; opacity: .42; pointer-events: none; background-image: linear-gradient(rgba(150,178,191,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(150,178,191,.045) 1px, transparent 1px); background-size: 58px 58px; }
.stage-topline { position: relative; z-index: 2; display: flex; align-items: center; gap: 12px; color: #9FC6DC; font-family: var(--technical-font); font-size: 11px; font-weight: 700; letter-spacing: .1em; }
.stage-topline i { display: block; flex: 1; height: 1px; background: rgba(165,190,202,.38); }
.hero-product-wrap { position: absolute; z-index: 1; inset: 70px 58px 202px; display: grid; place-items: center; }
.hero-product-wrap::after { content: ""; position: absolute; z-index: -1; bottom: 10px; width: 62%; height: 25px; background: rgba(2,5,6,.46); border-radius: 50%; filter: blur(10px); }
.hero-product { width: min(100%, 490px); height: 100%; max-height: 434px; object-fit: contain; object-position: center; filter: drop-shadow(0 22px 18px rgba(0,0,0,.4)); }
.product-caption { position: absolute; right: 0; bottom: 0; display: grid; gap: 4px; margin: 0; text-align: right; }
.product-caption span, .validation-stage > p span { color: #9FC6DC; font-family: var(--technical-font); font-size: 11px; font-weight: 700; letter-spacing: .1em; }
.product-caption strong, .validation-stage > p strong { color: #fff; font-size: 14px; letter-spacing: .04em; }
.project-relationship { position: absolute; z-index: 2; right: 46px; bottom: 34px; left: 46px; display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 0; margin: 0; padding: 18px 0 0; border-top: 1px solid rgba(167,192,204,.4); list-style: none; }
.project-relationship li { min-height: 104px; position: relative; padding: 0 20px 0 36px; }
.project-relationship li:not(:last-child) { border-right: 1px solid rgba(167,192,204,.25); }
.project-relationship li:not(:last-child)::after { content: "→"; position: absolute; z-index: 3; top: 37px; right: -10px; color: #9FC6DC; font-size: 18px; }
.project-relationship span { position: absolute; top: 1px; left: 0; color: #9FC6DC; font-family: var(--technical-font); font-size: 11px; }
.project-relationship strong { display: block; color: #fff; font-size: 15px; line-height: 1.25; }
.project-relationship small { display: block; margin-top: 8px; color: #BECBD0; font-size: 13px; line-height: 1.4; }

.audience-strip { padding: 66px 0 0; background: var(--graphite); color: #fff; }
.audience-intro { display: grid; grid-template-columns: 22% minmax(0,1fr); gap: 26px; align-items: end; padding-bottom: 42px; }
.audience-intro .section-kicker { color: #9FC6DC; }
.audience-intro h2 { max-width: 820px; margin: 0; font-family: var(--display-font); font-size: clamp(32px,3.1vw,47px); letter-spacing: -.045em; line-height: 1.05; }
.audience-intro h2 em { color: #C7D3D8; }
.audience-list { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); border-top: 1px solid rgba(197,205,210,.34); }
.audience-list article { min-height: 202px; padding: 28px 24px 36px 0; border-right: 1px solid rgba(197,205,210,.25); }
.audience-list article + article { padding-left: 24px; }
.audience-list article:last-child { border-right: 0; }
.audience-list span { color: #8FBAD2; font-family: var(--technical-font); font-size: 12px; }
.audience-list h3 { margin: 19px 0 11px; font-size: 20px; line-height: 1.2; }
.audience-list p { max-width: 300px; margin: 0; color: #C1CDD2; font-size: 15px; line-height: 1.6; }

.workflow-section, .share-section, .responsibility-section, .related-section { padding: 102px 0; background: var(--bright-surface); }
.areas-section, .faq-section { padding: 102px 0; background: var(--graphite); color: #fff; }
.section-heading { display: grid; grid-template-columns: 20% minmax(0,1fr) minmax(220px,.59fr); gap: 28px; align-items: start; }
.section-index { display: flex; gap: 12px; align-items: baseline; color: var(--steel-blue-deep); }
.section-index span { font-family: var(--technical-font); font-size: 14px; }
.section-index p { margin: 0; }
.section-index.light { color: #9FC6DC; }
.section-heading h2 { margin: 0; font-family: var(--display-font); font-size: clamp(34px,3.2vw,49px); font-weight: 760; letter-spacing: -.052em; line-height: 1.04; }
.section-heading > p { margin: 6px 0 0; color: #58666D; font-size: 16px; line-height: 1.65; }
.section-heading.dark h2 { color: #fff; }
.section-heading.dark h2 em { color: #C9D5D9; }
.section-heading.dark > p { color: #BEC9CD; }

.workflow-rail { display: grid; grid-template-columns: repeat(6, minmax(0,1fr)); position: relative; margin: 62px 0 0; padding: 34px 0 0; list-style: none; }
.workflow-rail::before { content: ""; position: absolute; top: 34px; left: 0; right: 0; height: 1px; background: var(--border-silver); }
.workflow-rail li { min-height: 276px; position: relative; padding: 38px 16px 0 0; }
.workflow-rail li::before { content: ""; position: absolute; top: 28px; left: 0; width: 12px; height: 12px; border: 2px solid var(--steel-blue); border-radius: 50%; background: var(--bright-surface); }
.workflow-rail li:last-child { padding-right: 0; }
.workflow-rail li > span { color: var(--steel-blue-deep); font-family: var(--technical-font); font-size: 12px; }
.workflow-rail small { display: block; margin-top: 15px; color: #60727B; font-family: var(--technical-font); font-size: 10px; font-weight: 700; letter-spacing: .09em; }
.workflow-rail h3 { margin: 10px 0 9px; font-size: 18px; line-height: 1.18; }
.workflow-rail p { margin: 0; color: #536168; font-size: 15px; line-height: 1.58; }

.two-pane { display: grid; grid-template-columns: minmax(280px,.42fr) minmax(0,.58fr); gap: 64px; }
.section-copy h2, .validation-content h2 { margin: 20px 0 24px; font-family: var(--display-font); font-size: clamp(38px,3.6vw,54px); letter-spacing: -.06em; line-height: 1.02; }
.section-copy .body-lead { margin: 0 0 28px; color: #4B5A61; font-size: 17px; line-height: 1.7; }
.requirements-matrix { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); margin: 0; border-top: 1px solid var(--border-silver); border-left: 1px solid var(--border-silver); }
.requirements-matrix div { min-height: 242px; padding: 27px; border-right: 1px solid var(--border-silver); border-bottom: 1px solid var(--border-silver); }
.requirements-matrix dt { color: var(--steel-blue-deep); font-family: var(--technical-font); font-size: 12px; font-weight: 700; letter-spacing: .07em; }
.requirements-matrix dd { margin: 37px 0 0; }
.requirements-matrix strong { display: block; font-size: 18px; line-height: 1.3; }
.requirements-matrix dd span { display: block; margin-top: 11px; color: #526168; font-size: 15px; line-height: 1.57; }

.integration-matrix { margin-top: 60px; border-top: 1px solid rgba(197,205,210,.45); }
.integration-matrix > div { display: grid; grid-template-columns: 21% 37% minmax(0,1fr); column-gap: 26px; align-items: center; min-height: 93px; border-bottom: 1px solid rgba(197,205,210,.26); }
.integration-matrix .matrix-head { min-height: 44px; color: #9FC6DC; font-family: var(--technical-font); font-size: 11px; font-weight: 700; letter-spacing: .09em; }
.integration-matrix > div > span { color: #fff; font-size: 17px; font-weight: 750; }
.integration-matrix > div > span b { display: inline-block; width: 30px; color: #8FBAD2; font-family: var(--technical-font); font-size: 12px; font-weight: 400; }
.integration-matrix strong { color: #DDE6E9; font-size: 16px; line-height: 1.4; }
.integration-matrix p { margin: 0; color: #BBC8CD; font-size: 15px; line-height: 1.5; }

.responsibility-swimlanes { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); margin-top: 62px; border: 1px solid var(--border-silver); }
.responsibility-swimlanes article { min-height: 384px; padding: 34px 38px; }
.responsibility-swimlanes article + article { border-left: 1px solid var(--border-silver); background: #E8EDF0; }
.responsibility-swimlanes header { padding-bottom: 25px; border-bottom: 1px solid var(--border-silver); }
.responsibility-swimlanes small { color: var(--steel-blue-deep); font-family: var(--technical-font); font-size: 11px; font-weight: 700; letter-spacing: .09em; }
.responsibility-swimlanes h3 { margin: 12px 0 0; font-family: var(--display-font); font-size: 25px; letter-spacing: -.035em; line-height: 1.14; }
.responsibility-swimlanes ul { display: grid; gap: 17px; margin: 27px 0 0; padding: 0; list-style: none; }
.responsibility-swimlanes li { position: relative; padding-left: 19px; color: #4B5A61; font-size: 16px; line-height: 1.52; }
.responsibility-swimlanes li::before { content: ""; position: absolute; top: .61em; left: 0; width: 7px; height: 1px; background: var(--steel-blue); }
.scope-note { max-width: 690px; margin: 28px 0 0 auto; padding-left: 18px; border-left: 2px solid var(--steel-blue); color: #526169; font-size: 15px; }

.validation-section { padding: 0; background: var(--deep-stage); color: #fff; }
.validation-grid { display: grid; grid-template-columns: 42% minmax(0,58%); }
.validation-stage { min-height: 768px; position: relative; overflow: hidden; padding: 40px 32px; background: radial-gradient(ellipse 60% 48% at 50% 48%, rgba(67,102,122,.28), rgba(21,26,30,0) 73%), linear-gradient(160deg,#11181C,#1B252A); }
.validation-stage::after { content: ""; position: absolute; right: 0; bottom: 0; left: 0; height: 33%; background: linear-gradient(0deg,rgba(9,13,15,.72),transparent); pointer-events: none; }
.validation-product { position: absolute; z-index: 1; top: 108px; right: 18px; bottom: 112px; left: 18px; width: calc(100% - 36px); height: calc(100% - 220px); object-fit: contain; filter: drop-shadow(0 23px 15px rgba(0,0,0,.42)); }
.validation-stage > p { position: absolute; z-index: 2; right: 32px; bottom: 38px; display: grid; gap: 4px; margin: 0; text-align: right; }
.validation-content { padding: 82px 0 72px 68px; }
.validation-content h2 { max-width: 610px; color: #fff; }
.validation-content h2 em { color: #CBD6DA; }
.validation-content .body-lead { max-width: 625px; margin: 0 36px 34px 0; color: #BECAD0; font-size: 16px; line-height: 1.66; }
.validation-checklist { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 30px; margin: 0 36px 0 0; padding: 0; list-style: none; border-top: 1px solid rgba(197,205,210,.38); }
.validation-checklist li { display: grid; grid-template-columns: 32px minmax(0,1fr); gap: 12px; min-height: 130px; padding: 19px 0; border-bottom: 1px solid rgba(197,205,210,.25); }
.validation-checklist span { color: #8FBAD2; font-family: var(--technical-font); font-size: 11px; }
.validation-checklist strong { color: #fff; font-size: 16px; line-height: 1.35; }
.validation-checklist p { margin: 8px 0 0; color: #BBC8CD; font-size: 14px; line-height: 1.5; }

.related-list { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); margin-top: 62px; border-top: 1px solid var(--border-silver); }
.related-list a { display: grid; grid-template-columns: 32px minmax(0,1fr) 26px; column-gap: 13px; min-height: 239px; padding: 27px 24px 25px 0; color: var(--graphite); border-right: 1px solid var(--border-silver); text-decoration: none; }
.related-list a + a { padding-left: 24px; }
.related-list a:last-child { border-right: 0; }
.related-list a:hover { background: #EDF1F3; }
.related-list > a > span { color: var(--steel-blue-deep); font-family: var(--technical-font); font-size: 12px; }
.related-list small { display: block; color: #60727B; font-family: var(--technical-font); font-size: 11px; font-weight: 700; letter-spacing: .08em; }
.related-list strong { display: block; margin-top: 11px; font-size: 19px; line-height: 1.22; }
.related-list p { grid-column: 2 / span 2; margin: 16px 0 0; color: #526169; font-size: 15px; line-height: 1.55; }
.related-list b { color: var(--steel-blue); font-size: 19px; font-weight: 400; }

.faq-list { margin-top: 62px; border-top: 1px solid rgba(197,205,210,.42); }
.faq-list details { border-bottom: 1px solid rgba(197,205,210,.26); }
.faq-list summary { min-height: 62px; display: flex; align-items: center; position: relative; padding: 18px 52px 18px 0; cursor: pointer; color: #fff; font-size: 18px; font-weight: 720; line-height: 1.36; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::before, .faq-list summary::after { content: ""; position: absolute; right: 10px; width: 17px; height: 2px; background: #9FC6DC; }
.faq-list summary::after { transform: rotate(90deg); transition: transform .18s ease; }
.faq-list details[open] summary::after { transform: rotate(0); }
.faq-list details p { max-width: 825px; margin: 0; padding: 0 52px 24px 0; color: #C1CDD2; font-size: 16px; line-height: 1.66; }

.cooperation-section { padding: 68px 0; background: var(--pale-aluminum); }
.cooperation-grid { display: grid; grid-template-columns: 16% minmax(0,1fr) minmax(320px,.66fr); gap: 28px; align-items: center; }
.cooperation-meta { display: flex; gap: 10px; align-items: baseline; color: var(--steel-blue-deep); }
.cooperation-meta span, .cooperation-meta p { font-family: var(--technical-font); font-size: 12px; font-weight: 700; letter-spacing: .08em; }
.cooperation-meta p { margin: 0; }
.cooperation-copy h2 { margin: 12px 0 0; font-family: var(--display-font); font-size: clamp(34px,3.4vw,51px); letter-spacing: -.055em; line-height: 1.02; }
.cooperation-action { justify-self: end; max-width: 370px; }
.cooperation-action p { margin: 0 0 20px; color: #526169; font-size: 15px; line-height: 1.57; }

.site-footer { padding: 72px 0 0; background: var(--graphite); color: #fff; }
.footer-grid { display: grid; grid-template-columns: 34% minmax(0,1fr); gap: 64px; }
.footer-brand > p { max-width: 315px; margin: 25px 0 17px; color: #C1CDD2; font-size: 15px; line-height: 1.6; }
.brand.inverse { color: #fff; }
.footer-email { align-items: center; color: #9FC6DC; display: inline-flex; font-size: 16px; font-weight: 700; min-height: 44px; text-decoration: none; }
.footer-email span { margin-left: 12px; }
.footer-nav { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 24px; }
.footer-nav div { display: grid; align-content: start; gap: 11px; }
.footer-nav small { margin-bottom: 6px; color: #8FBAD2; font-family: var(--technical-font); font-size: 11px; font-weight: 700; letter-spacing: .09em; }
.footer-nav a { align-items: center; color: #D3DDE1; display: flex; font-size: 14px; line-height: 1.4; min-height: 44px; text-decoration: none; }
.footer-nav a:hover { color: #9FC6DC; }
.footer-base { display: flex; justify-content: space-between; gap: 24px; margin-top: 62px; padding: 18px 0; border-top: 1px solid rgba(197,205,210,.25); color: #AEBBC1; font-size: 13px; }

:focus-visible { outline: 3px solid #3D7898; outline-offset: 4px; }
.hero-stage :focus-visible, .areas-section :focus-visible, .validation-section :focus-visible, .faq-section :focus-visible, .site-footer :focus-visible { outline-color: #B7E2F4; }

@media (max-width: 1180px) {
  :root { --gutter: 40px; }
  .site-header { gap: 16px; }
  .desktop-nav a { padding-inline: 9px; font-size: 13px; }
  .cut-action { gap: 21px; }
  .hero-copy { padding-top: 70px; }
  .hero-stage { padding-inline: 36px; }
  .hero-product-wrap { inset-inline: 40px; }
  .project-relationship { right: 36px; left: 36px; }
  .project-relationship li { padding-inline: 13px 14px; }
  .project-relationship small { font-size: 12px; }
  .section-heading { grid-template-columns: 18% minmax(0,1fr) minmax(190px,.55fr); gap: 22px; }
  .validation-content { padding-left: 46px; }
}

@media (max-width: 960px) {
  :root { --gutter: 32px; }
  .site-header { min-height: 84px; }
  .desktop-nav a { min-height: 84px; padding-inline: 7px; }
  .header-action { font-size: 13px; }
  .hero-copy h1 { font-size: 48px; }
  .hero-stage { min-height: 688px; }
  .hero-product-wrap { inset: 74px 28px 215px; }
  .project-relationship { right: 28px; left: 28px; }
  .project-relationship li { padding-left: 25px; }
  .section-heading { grid-template-columns: 1fr minmax(0,1.85fr); }
  .section-heading > p { grid-column: 2; }
  .section-index { grid-row: span 2; }
  .workflow-rail { grid-template-columns: repeat(3,minmax(0,1fr)); row-gap: 12px; }
  .workflow-rail::before { display: none; }
  .workflow-rail li { min-height: 250px; padding: 20px 18px 15px; border-top: 1px solid var(--border-silver); border-right: 1px solid var(--border-silver); }
  .workflow-rail li:nth-child(3n) { border-right: 0; }
  .workflow-rail li::before { top: -6px; }
  .two-pane { gap: 36px; }
  .responsibility-swimlanes article { padding: 28px; }
  .validation-grid { grid-template-columns: 39% minmax(0,61%); }
  .validation-content { padding-left: 34px; }
  .validation-checklist { grid-template-columns: 1fr; gap: 0; }
  .validation-checklist li { min-height: 0; }
  .cooperation-grid { grid-template-columns: 16% minmax(0,1fr); }
  .cooperation-action { grid-column: 2; justify-self: start; max-width: 440px; }
}

@media (max-width: 760px) {
  :root { --gutter: 22px; }
  .page-shell { box-shadow: none; }
  .site-header { min-height: 74px; grid-template-columns: 1fr auto; padding-inline: var(--gutter); }
  .brand-mark { width: 28px; height: 28px; }
  .brand-name { font-size: 16px; }
  .desktop-nav, .header-action { display: none; }
  .mobile-menu { width: 46px; height: 46px; display: inline-grid; align-content: center; justify-items: center; gap: 6px; padding: 0; border: 0; background: transparent; color: var(--graphite); cursor: pointer; }
  .mobile-menu span { display: block; width: 22px; height: 2px; background: currentColor; }
  .mobile-menu[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .mobile-menu[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  /* The existing button becomes the visible close control above the full-screen menu. */
  html.mobile-navigation-open .site-header { z-index: 101; background: transparent; border-bottom-color: transparent; pointer-events: none; }
  html.mobile-navigation-open .site-header .brand { visibility: hidden; }
  html.mobile-navigation-open .mobile-menu { position: fixed; top: 14px; right: var(--gutter); z-index: 102; box-sizing: border-box; background: var(--titanium-white); color: var(--graphite); pointer-events: auto; }
  html.mobile-navigation-open body.admin-bar .mobile-menu { top: calc(var(--wp-admin--admin-bar--height, 46px) + 14px); }
  .integration-hero { grid-template-columns: 1fr; grid-template-areas: "copy" "stage" "actions"; }
  .hero-copy { padding: 42px var(--gutter) 21px; }
  .hero-copy h1 { margin: 17px 0 18px; font-size: clamp(35px,10vw,42px); letter-spacing: -.057em; line-height: 1.01; }
  .hero-copy .body-lead { font-size: 16px; line-height: 1.6; }
  .hero-stage { min-height: 292px; height: 292px; padding: 21px var(--gutter); }
  .stage-topline { gap: 8px; font-size: 11px; }
  .hero-product-wrap { inset: 39px 38px 38px; }
  .hero-product { max-height: 207px; filter: drop-shadow(0 14px 13px rgba(0,0,0,.36)); }
  .product-caption { right: -8px; bottom: 1px; }
  .product-caption span { font-size: 11px; }
  .product-caption strong { font-size: 12px; }
  .project-relationship { display: none; }
  .hero-actions { padding: 24px var(--gutter) 38px; }
  .hero-actions-row { display: grid; grid-template-columns: 1fr; gap: 11px; }
  .hero-actions-row .cut-action { width: 100%; }
  .hero-actions-row .text-action { width: max-content; }
  .working-line { align-items: flex-start; gap: 8px; flex-direction: column; margin-top: 23px; padding: 15px 0; }
  .working-line p { gap: 7px; font-size: 13px; }
  .audience-strip { padding-top: 48px; }
  .audience-intro { display: block; padding-bottom: 29px; }
  .audience-intro h2 { margin-top: 17px; font-size: 34px; }
  .audience-list { grid-template-columns: 1fr; }
  .audience-list article, .audience-list article + article { min-height: 0; padding: 23px 0; border-right: 0; border-bottom: 1px solid rgba(197,205,210,.25); }
  .audience-list article:last-child { border-bottom: 0; }
  .audience-list h3 { margin: 12px 0 7px; font-size: 19px; }
  .workflow-section, .share-section, .responsibility-section, .related-section, .areas-section, .faq-section { padding: 68px 0; }
  .section-heading { display: block; }
  .section-heading h2 { margin: 16px 0 15px; font-size: 35px; }
  .section-heading > p { margin: 0; font-size: 16px; }
  .workflow-rail { grid-template-columns: 1fr; gap: 0; margin-top: 39px; padding: 0 0 0 28px; border-left: 1px solid var(--border-silver); }
  .workflow-rail li, .workflow-rail li:nth-child(3n) { min-height: 0; padding: 0 0 29px 25px; border: 0; }
  .workflow-rail li::before { top: 4px; left: -35px; background: var(--bright-surface); }
  .workflow-rail li > span { display: block; margin-bottom: 11px; }
  .workflow-rail small { margin-top: 0; font-size: 11px; }
  .workflow-rail h3 { margin-top: 7px; font-size: 20px; }
  .workflow-rail p { font-size: 16px; }
  .two-pane { grid-template-columns: 1fr; gap: 36px; }
  .section-copy h2, .validation-content h2 { font-size: 37px; }
  .requirements-matrix { grid-template-columns: 1fr; }
  .requirements-matrix div { min-height: 0; padding: 23px; }
  .requirements-matrix dd { margin-top: 16px; }
  .integration-matrix { margin-top: 37px; }
  .integration-matrix .matrix-head { display: none; }
  .integration-matrix > div { grid-template-columns: 1fr; gap: 8px; align-items: start; min-height: 0; padding: 19px 0; }
  .integration-matrix > div > span { font-size: 16px; }
  .integration-matrix strong { font-size: 16px; }
  .integration-matrix p { font-size: 16px; }
  .responsibility-swimlanes { grid-template-columns: 1fr; margin-top: 38px; }
  .responsibility-swimlanes article { min-height: 0; padding: 25px 22px; }
  .responsibility-swimlanes article + article { border-top: 1px solid var(--border-silver); border-left: 0; }
  .responsibility-swimlanes h3 { font-size: 23px; }
  .responsibility-swimlanes li { font-size: 16px; }
  .scope-note { margin: 23px 0 0; font-size: 16px; }
  .validation-grid { grid-template-columns: 1fr; }
  .validation-stage { min-height: 322px; height: 322px; padding: 23px var(--gutter); }
  .validation-product { top: 54px; right: 32px; bottom: 55px; left: 32px; width: calc(100% - 64px); height: calc(100% - 109px); }
  .validation-stage > p { right: var(--gutter); bottom: 20px; }
  .validation-content { padding: 55px var(--gutter) 61px; }
  .validation-content .body-lead, .validation-checklist { margin-right: 0; }
  .validation-content .body-lead { font-size: 16px; }
  .validation-checklist li { min-height: 0; padding: 18px 0; }
  .validation-checklist p { font-size: 16px; }
  .related-list { grid-template-columns: 1fr; margin-top: 37px; }
  .related-list a, .related-list a + a { min-height: 0; padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--border-silver); }
  .related-list strong { font-size: 19px; }
  .related-list p { margin-top: 10px; font-size: 16px; }
  .faq-list { margin-top: 37px; }
  .faq-list summary { min-height: 54px; padding-block: 16px; font-size: 17px; }
  .faq-list details p { padding-bottom: 20px; font-size: 16px; }
  .cooperation-section { padding: 51px 0; }
  .cooperation-grid { grid-template-columns: 1fr; gap: 17px; }
  .cooperation-copy h2 { font-size: 37px; }
  .cooperation-action { grid-column: auto; max-width: none; }
  .cooperation-action p { font-size: 16px; }
  .cooperation-action .cut-action { width: 100%; }
  .site-footer { padding-top: 56px; }
  .footer-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-nav { grid-template-columns: repeat(2,minmax(0,1fr)); row-gap: 34px; }
  .footer-nav a { font-size: 15px; }
  /* Public reading copy keeps the 16px mobile baseline. Compact technical
     labels remain labels rather than body prose. */
  .audience-list p,
  .requirements-matrix dd span,
  .footer-brand > p { font-size: 16px; }
  .footer-base { flex-direction: column; gap: 4px; margin-top: 46px; font-size: 13px; }
}

@media (max-width: 374px) {
  :root { --gutter: 20px; }
  .hero-copy h1 { font-size: 34px; }
  .hero-stage { height: 282px; min-height: 282px; }
  .hero-product-wrap { inset-inline: 29px; }
  .working-line p { font-size: 12px; }
  .section-heading h2, .section-copy h2, .validation-content h2, .cooperation-copy h2 { font-size: 34px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}