/* V4 editorial system: white space, mineral gray, restrained product UI. */
:root {
  --paper: #fff;
  --ink: #0b0b0c;
  --muted: #6a6b70;
  --line: rgba(0, 0, 0, 0.085);
  --soft-gray: #f5f5f6;
  --mid-gray: #e7e7ea;
  --surface-gray: #f8f8f9;
  --quiet-gray: #eeeeef;
  --max: 1248px;
  --content-width: min(calc(100% - 56px), var(--max));
  --shadow: 0 30px 90px rgba(16, 16, 18, 0.1);
}

html {
  max-width: 100%;
  overflow-x: clip;
  background: #fff;
}

body {
  max-width: 100%;
  overflow-x: clip;
  background: #fff;
  color: #111;
}

.site-header.scrolled {
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.75);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

/* During the final glass-release frames the surface is already transparent;
   restore the hero's light navigation immediately instead of flashing dark. */
.os-site .site-header.scrolled.is-releasing :is(.brand-symbol, .brand-wordmark) {
  filter: brightness(0) invert(1) drop-shadow(0 1px 10px rgba(0, 0, 0, 0.24));
}

.os-site .site-header.scrolled.is-releasing
  :is(.brand-os-label, .main-nav:not(.open) a, .header-link, .header-cta, .icon-button) {
  color: rgba(255, 255, 255, 0.86);
  text-shadow: 0 1px 14px rgba(0, 0, 0, 0.3);
}

.os-site .site-header.scrolled.is-releasing .header-cta,
.os-site .site-header.scrolled.is-releasing .icon-button {
  border-color: transparent;
  background: transparent;
  box-shadow: none;
}

.section-pad {
  padding: clamp(128px, 10vw, 176px) 24px;
}

.section-intro,
.smart-onboarding-heading,
.capability-atlas-heading,
.governance-heading,
.demo-heading,
.benefit-heading {
  column-gap: clamp(70px, 8vw, 132px);
}

.section-intro h2,
.statement-inner h2,
.benefit-heading h2,
.pilot-copy h2,
.cta-copy h2,
.smart-onboarding-heading h2,
.capability-atlas-heading h2,
.governance-heading h2 {
  font-size: clamp(48px, 4.4vw, 64px);
  font-weight: 610;
  line-height: 1.08;
  text-wrap: balance;
}

#problem-title { font-size: clamp(48px, 3.8vw, 54px); }
.faq-heading h2 { font-size: 46px; }

.section-intro > p:last-child,
.smart-onboarding-heading p,
.capability-atlas-heading p,
.governance-heading > p {
  max-width: 510px;
  color: #666;
  font-size: 15px;
  line-height: 1.9;
}

.eyebrow {
  color: #777;
  font-size: 11px;
  letter-spacing: 0;
}

/* Hero — CSS gradient aligned to the gray film, deepened a few stops. */
.hero {
  min-height: 760px;
  background: #a8aaad;
}

.hero-media {
  background-image: none;
  background:
    radial-gradient(ellipse 58% 28% at 69% 73%, rgba(70, 72, 76, 0.28) 0%, transparent 70%),
    radial-gradient(circle at 17% 44%, rgba(255, 255, 255, 0.05) 0%, transparent 46%),
    linear-gradient(135deg, #d8d8da 0%, #b9bbbe 45%, #94969a 100%);
  background-position: center;
  background-size: cover;
  transform: none;
  animation: none;
  filter: none;
}

.cta-media {
  background-image: none;
  background:
    radial-gradient(ellipse 58% 28% at 69% 73%, rgba(70, 72, 76, 0.28) 0%, transparent 70%),
    radial-gradient(circle at 17% 44%, rgba(255, 255, 255, 0.05) 0%, transparent 46%),
    linear-gradient(135deg, #d8d8da 0%, #b9bbbe 45%, #94969a 100%);
  background-position: center;
  background-size: cover;
  filter: none;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(8, 9, 9, 0.7) 0%, rgba(8, 9, 9, 0.48) 31%, rgba(8, 9, 9, 0.08) 62%, transparent 82%),
    linear-gradient(0deg, rgba(0, 0, 0, 0.22), transparent 42%);
}

.hero-copy {
  padding-top: clamp(160px, 18vh, 210px);
  animation: v4-copy-enter 900ms cubic-bezier(.22,.72,.2,1) both;
}

.os-site .hero h1 {
  max-width: 590px;
  font-size: clamp(58px, 5.2vw, 78px);
  font-weight: 610;
  line-height: 1.02;
}

.hero-claim {
  margin-top: 24px;
  font-size: 21px;
}

.hero-lede {
  max-width: 470px;
  color: rgba(17, 17, 19, 0.62);
  font-size: 15px;
  line-height: 1.85;
}

.hero-product {
  top: 54%;
  right: max(18px, calc((100vw - 1440px) / 2));
  width: min(650px, calc(100vw - 40px));
  height: 530px;
  border-color: rgba(255, 255, 255, 0.28);
  border-radius: 24px;
  background:
    linear-gradient(160deg, rgba(52, 52, 54, 0.88), rgba(18, 18, 19, 0.92) 55%, rgba(10, 10, 11, 0.94));
  box-shadow: 0 38px 110px rgba(0, 0, 0, 0.34), inset 0 1px rgba(255, 255, 255, 0.22);
  -webkit-backdrop-filter: blur(28px) saturate(.9);
  backdrop-filter: blur(28px) saturate(.9);
  animation: v4-console-enter 1100ms cubic-bezier(.22,.72,.2,1) 100ms both;
}

.hero-product::before {
  border-radius: 23px;
  background: linear-gradient(128deg, rgba(255,255,255,.12), transparent 38%, rgba(255,255,255,.035));
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.22);
}

.hero .primary-button {
  min-height: 52px;
  border-radius: 999px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.2);
}

.scroll-cue { color: rgba(255, 255, 255, 0.65); }

/* Scrolled nav: flat tint, no rim highlight. Liquid mode keeps SVG refraction
   on the refraction layer — do not put backdrop blur on the header itself. */
.site-header.liquid-glass-surface.scroll-glass-header.is-lifted.scrolled {
  min-height: 56px;
  padding: 6px 12px;
  border: 0.5px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  background-clip: padding-box;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.site-header.liquid-glass-surface.scroll-glass-header.is-lifted.liquid-glass-surface--frosted.scrolled {
  min-height: 56px;
  padding: 6px 12px;
  border: 0.5px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  background: rgba(248, 248, 249, 0.62);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
  -webkit-backdrop-filter: blur(22px) saturate(1.18);
  backdrop-filter: blur(22px) saturate(1.18);
}

.site-header.liquid-glass-surface.scroll-glass-header.is-lifted.liquid-glass-surface--opaque.scrolled {
  border-radius: 999px;
  border-color: rgba(0, 0, 0, 0.08);
  background: rgba(248, 248, 249, 0.88);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.1);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.site-header.is-compact {
  width: min(calc(100% - 34px), calc(var(--max) + 14px));
}

.site-header.scrolled .brand-symbol {
  height: 20px;
}

.site-header.scrolled .brand-wordmark {
  height: 19px;
}

.site-header.scrolled .brand-os-label {
  color: #2f3033;
}

.site-header .adaptive-nav .nav-face a {
  min-height: 36px;
  padding: 0 11px;
  color: #3a3b3f;
  font-size: 12px;
  font-weight: 630;
}

.nav-switcher {
  height: 36px;
}

.nav-return-button,
.global-menu-button {
  width: 30px;
  height: 30px;
}

.nav-return-button {
  top: 3px;
  right: 4px;
}

.site-header.scrolled .header-cta,
.site-header.scrolled .icon-button {
  min-height: 40px;
  border-radius: 999px;
}

.liquid-glass-surface__refraction,
.liquid-glass-surface__tint {
  clip-path: inset(0 round 999px);
}

/* Keep SVG refraction as the only backdrop filter in liquid mode. */
.liquid-glass-surface__refraction {
  opacity: 1;
  background: transparent;
  -webkit-backdrop-filter: var(--liquid-surface-filter);
  backdrop-filter: var(--liquid-surface-filter);
}

.liquid-glass-surface__tint {
  background: rgba(255, 255, 255, 0.36);
  box-shadow: none;
}

.site-header.liquid-glass-surface.scroll-glass-header.is-lifted.scrolled::before,
.site-header.liquid-glass-surface.scroll-glass-header.is-lifted.scrolled::after {
  content: none;
  display: none;
}

.site-header.liquid-glass-surface.scroll-glass-header.is-lifted.scrolled.is-releasing {
  overflow: hidden;
  border-color: transparent;
  border-radius: 999px;
  background: transparent;
  box-shadow: none;
  transition:
    width 180ms cubic-bezier(0.22, 0.72, 0.2, 1),
    background 120ms ease,
    border-color 120ms ease,
    box-shadow 120ms ease;
}

.site-header.liquid-glass-surface.scroll-glass-header.is-lifted.scrolled.is-releasing::before,
.site-header.liquid-glass-surface.scroll-glass-header.is-lifted.scrolled.is-releasing::after,
.site-header.scrolled.is-releasing > .liquid-glass-surface__refraction,
.site-header.scrolled.is-releasing > .liquid-glass-surface__tint {
  opacity: 0;
}

.section-intro,
.statement-inner,
.store-story,
.os-value-prologue,
.smart-onboarding-heading,
.smart-onboarding-console,
.smart-onboarding-roadmap,
.smart-onboarding-values,
.capability-atlas-heading,
.capability-atlas,
.demo-heading,
.demo-shell,
.proof-showcase,
.benefit-heading,
.benefit-list,
.capability-grid,
.governance-heading,
.governance-grid,
.pilot-shell,
.faq-layout,
.fit-heading,
.fit-columns {
  width: var(--content-width);
  max-width: var(--max);
  margin-right: auto;
  margin-left: auto;
}

/* Bright editorial sections */
.architecture-section,
.problem-section,
.smart-onboarding-section,
.ecosystem-section,
.demo-section,
.proof-section,
.benefit-section,
.capability-section,
.governance-section,
.faq-section,
.site-footer,
.duty-agent-feature {
  color: #111;
  background: #fff;
}

.statement-band,
.capability-atlas-section,
.pilot-section,
.fit-section {
  color: #111;
  background: var(--soft-gray);
}

.architecture-section,
.problem-section,
.smart-onboarding-section,
.capability-atlas-section,
.ecosystem-section,
.demo-section,
.proof-section,
.benefit-section,
.capability-section,
.governance-section,
.pilot-section,
.faq-section,
.fit-section {
  border-top: 1px solid var(--line);
}

.statement-band {
  padding: clamp(128px, 11vw, 190px) 24px;
  border-block: 1px solid var(--line);
}

.statement-inner { max-width: 1080px; }
.statement-inner > p { color: #777; }
.value-line { border-color: var(--line); }
.value-line span { color: #666; }
.value-line span:not(:last-child) { border-color: var(--line); }
.value-line b { color: #111; }

/* Store panorama: white page, discernible rooms. */
.store-story {
  margin-top: 78px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface-gray);
  box-shadow: 0 28px 80px rgba(16, 16, 18, 0.07);
}

.store-miniature {
  background: linear-gradient(180deg, #fbfbfc, #f2f2f3);
  filter: grayscale(1);
}

.sq-floor { background: #eeeeef; }
.sq-room { background: #fafafa; }
.sq-door { background: #fff; }
.store-story-meta { padding-top: 20px; }
.store-story-detail { padding-bottom: 38px; }

/* Dark product windows on light editorial pages. */
.smart-onboarding-heading p,
.capability-atlas-heading p,
.governance-heading > p { color: #666; }

.smart-onboarding-console,
.capability-atlas,
.demo-shell {
  border: 1px solid rgba(17,17,17,.12);
  border-radius: 30px;
  background: #151515;
  box-shadow: 0 38px 100px rgba(20,20,24,.14);
}

.capability-rail {
  overflow: hidden;
  contain: paint;
}

.smart-onboarding-values article,
.capability-outcomes > span,
.capability-outcomes > span:first-child,
.capability-outcomes > span:last-child {
  border-color: var(--line);
}

.smart-onboarding-values span,
.capability-outcomes small { color: #777; }
.smart-onboarding-values strong,
.capability-outcomes strong { color: #111; }
.smart-onboarding-values p { color: #666; }

.smart-onboarding-console {
  color: #f5f5f7;
  overflow: hidden;
}

.smart-onboarding-console .smart-onboarding-bar strong,
.smart-onboarding-console .smart-onboarding-report h3,
.smart-onboarding-console .smart-onboarding-metrics strong,
.smart-onboarding-console .onboarding-recommendations strong {
  color: #f5f5f7;
}

.smart-onboarding-console .smart-onboarding-bar small,
.smart-onboarding-console .smart-onboarding-report header p,
.smart-onboarding-console .smart-onboarding-metrics span,
.smart-onboarding-console .onboarding-recommendations span {
  color: rgba(245, 245, 247, 0.58);
}

.smart-onboarding-console .smart-onboarding-nav button.active strong {
  color: #fff;
}

.smart-onboarding-console .smart-onboarding-nav button.active small {
  color: rgba(255, 255, 255, 0.68);
}

.capability-atlas-heading,
.smart-onboarding-heading { margin-bottom: 80px; }

.capability-atlas { color: #f5f5f7; }

/* Prologue restructuring: less long-form reading, more scannable system logic. */
.os-value-prologue {
  display: grid;
  gap: 34px;
  margin-bottom: 82px;
  padding-bottom: 76px;
}

.os-value-lead {
  column-gap: clamp(58px, 7vw, 104px);
  align-items: center;
}

.os-value-lead h2 {
  font-size: clamp(50px, 4.6vw, 66px);
  letter-spacing: -0.025em;
}

.os-value-lead > p {
  max-width: 560px;
  color: #5e5f63;
  font-size: 15px;
  line-height: 1.82;
}

.os-advisory {
  margin-top: 0;
  padding: clamp(36px, 4vw, 54px);
  border: 1px solid var(--line);
  border-radius: 30px;
  background:
    radial-gradient(circle at 84% 0%, rgba(255, 255, 255, 0.9), transparent 30%),
    linear-gradient(180deg, #fbfbfc, #f2f2f3);
  box-shadow: 0 24px 80px rgba(16, 16, 18, 0.07), inset 0 1px rgba(255, 255, 255, 0.86);
}

.os-advisory-heading {
  gap: clamp(38px, 5vw, 72px);
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.os-advisory-heading h3 {
  font-size: clamp(30px, 3vw, 42px);
  line-height: 1.2;
}

.os-advisory-heading > p {
  color: #5f6064;
  font-size: 14px;
  line-height: 1.82;
}

.os-advisory-inputs {
  gap: 12px;
  margin-top: 28px;
  padding: 0;
  border: 0;
}

.os-advisory-inputs > div,
.os-advisory-inputs > div:first-child,
.os-advisory-inputs > div:last-child {
  min-height: 180px;
  padding: 22px;
  border: 1px solid rgba(0, 0, 0, 0.07);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.64);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.74);
}

.os-advisory-inputs svg {
  width: 22px;
  height: 22px;
  color: #55565a;
}

.os-advisory-inputs strong {
  margin-top: 22px;
  font-size: 16px;
}

.os-advisory-inputs p {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.72;
}

.os-advisory-strategy {
  gap: clamp(38px, 6vw, 74px);
  padding: 42px 0 34px;
}

.os-advisory-question h4 {
  margin: 22px 0 16px;
  font-size: clamp(24px, 2.4vw, 32px);
  line-height: 1.32;
}

.os-advisory-question p {
  line-height: 1.8;
}

.os-advisory-strategy li {
  padding: 16px 0;
}

.os-advisory-source {
  max-width: 100%;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.os-advisory-bridge {
  margin-top: 28px;
  padding: 24px 26px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.68);
}

.os-advisory-bridge p {
  max-width: 680px;
  line-height: 1.78;
}

.os-advisory-bridge a {
  border-radius: 999px;
}

.ai-takeover-case {
  margin-top: 0;
  padding: clamp(42px, 5vw, 62px);
  border-radius: 30px;
  background:
    radial-gradient(circle at 82% 14%, rgba(255, 255, 255, 0.12), transparent 34%),
    linear-gradient(135deg, #111, #1d1d1f);
}

.ai-takeover-intro {
  gap: clamp(36px, 5vw, 72px);
}

.ai-takeover-intro h3 {
  font-size: clamp(30px, 3vw, 40px);
  line-height: 1.16;
}

.ai-takeover-intro > p {
  line-height: 1.78;
}

.ai-takeover-reasons {
  margin-top: 42px;
}

.ai-takeover-reasons article {
  min-height: 218px;
  padding-top: 24px;
  padding-bottom: 26px;
}

.ai-takeover-reasons strong {
  margin-top: 30px;
  font-size: 19px;
}

.ai-takeover-reasons p {
  line-height: 1.72;
}

.ai-takeover-closing {
  max-width: 980px;
  margin-top: 32px;
  font-size: 18px;
  line-height: 1.62;
}

.os-value-outcomes {
  gap: 12px;
  margin-top: 0;
  border-top: 0;
}

.os-value-outcomes article,
.os-value-outcomes article:not(:last-child) {
  min-height: 198px;
  margin-right: 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 16px 48px rgba(20, 20, 24, 0.05);
}

.os-value-outcomes strong {
  margin-top: 30px;
  font-size: 18px;
}

.os-value-outcomes p {
  margin-top: 14px;
  line-height: 1.68;
}

.problem-section .section-intro {
  margin-top: 0;
}

.pain-journey {
  width: var(--content-width);
  max-width: var(--max);
  margin-top: 64px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: #fff;
}

.pain-tabs button:first-child {
  border-left: 0;
}

.pain-tabs button:last-child {
  border-right: 0;
}

.demo-heading { color: #111; }
.demo-lead { color: #666; }
.demo-tabs {
  border-color: var(--line);
  border-radius: 4px;
  background: var(--quiet-gray);
}
.demo-tabs button {
  border-radius: 2px;
  color: #666;
}
.demo-tabs button.active {
  color: #fff;
  background: #151515;
  box-shadow: none;
}
.demo-shell { margin-top: 76px; overflow: hidden; background: var(--surface-gray); }
.management-questions {
  color: #555;
  border-color: var(--line);
}
.management-questions li {
  color: #555;
  border-color: var(--line);
}
.management-questions b {
  color: #999;
}
.demo-explanation { color: #111; }
.demo-explanation small { color: #666; }
.demo-explanation .explain-number { color: #858589; }
.role-outcomes { color: #111; border-color: var(--line); }
.role-outcomes > * { border-color: var(--line); }
.role-outcomes article > span { color: #888; }
.role-outcomes article p { color: #666; }
.role-outcomes article small { color: #111; }

.proof-section { background: #fff; }
.proof-showcase { gap: clamp(70px, 9vw, 130px); }

.benefit-heading .eyebrow { color: #777; }
.benefit-list {
  margin-top: 48px;
  border-color: var(--line);
}
.benefit-list article {
  min-height: 104px;
  grid-template-columns: 56px 1fr;
  border-color: var(--line);
  transition: none;
}
.benefit-list article:hover {
  padding: 0;
  background: transparent;
}
.benefit-list article > span {
  color: #999;
  font-weight: 650;
}
.benefit-list article:hover > span {
  color: #111;
}
.benefit-list h3 {
  margin-bottom: 6px;
  font-size: 21px;
}
.benefit-list p {
  color: #666;
  font-size: 13px;
  line-height: 1.65;
}
.benefit-list article > svg {
  display: none;
}

.ai-supervision-feature {
  margin-top: 100px;
  padding: clamp(48px, 5vw, 76px);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 30px;
  background: #121212;
  box-shadow: 0 34px 100px rgba(20, 20, 24, 0.13);
}

.duty-agent-feature {
  margin-top: 1px;
  border-top: 1px solid var(--line);
}

.ai-supervision-console,
.ai-supervision-tabs,
.ai-supervision-result,
.duty-agent-console,
.duty-agent-tabs,
.duty-agent-dialog,
.duty-agent-input span,
.consult-dialog,
.secondary-button.solid,
.demo-chrome {
  background-color: #fff;
}

.governance-grid { border-color: var(--line); }
.governance-grid article:not(:last-child) { border-color: var(--line); }
.governance-grid article > span {
  color: #111;
  background: var(--quiet-gray);
}
.governance-grid p { color: #666; }

.pilot-shell { gap: clamp(70px, 9vw, 130px); }

.governance-section.section-pad {
  padding-bottom: clamp(48px, 5vw, 72px);
}

.update-section.section-pad {
  padding-top: clamp(48px, 5vw, 72px);
  border-top: 1px solid var(--line);
  background: #fff;
}

.update-shell {
  width: var(--content-width);
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
  padding: clamp(36px, 4vw, 56px);
  border: 1px solid var(--line);
  border-radius: 28px;
  background: #f7f7f8;
  box-shadow: none;
}

.update-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #666;
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.04em;
}

.update-kicker svg {
  width: 14px;
  height: 14px;
}

.update-copy h2 {
  max-width: 12em;
  margin: 16px 0 0;
  font-size: clamp(30px, 3.2vw, 42px);
  font-weight: 600;
  line-height: 1.2;
}

.update-copy > p {
  max-width: 36em;
  margin: 18px 0 0;
  color: #666;
  font-size: 14px;
  line-height: 1.8;
}

.update-points {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.update-points li {
  display: grid;
  gap: 4px;
  padding: 14px 0 0;
  border-top: 1px solid var(--line);
}

.update-points strong {
  color: #111;
  font-size: 14px;
  font-weight: 650;
}

.update-points span {
  color: #666;
  font-size: 13px;
  line-height: 1.65;
}

.update-console {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 22px;
  background: #121214;
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.22);
  color: #f2f2f3;
}

.update-console-bar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  min-height: 46px;
  padding: 0 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

.update-console-bar strong {
  font-size: 11px;
  font-weight: 650;
}

.update-console-bar small {
  color: rgba(210, 210, 214, 0.55);
  font: 650 9px/1 var(--font-apple-mono);
}

.update-console-body {
  display: grid;
  gap: 10px;
  padding: 16px;
}

.update-item {
  display: grid;
  gap: 4px;
  padding: 14px 14px 15px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
}

.update-item.is-live {
  border-color: rgba(255, 255, 255, 0.18);
  background: linear-gradient(145deg, rgba(64, 64, 68, 0.55), rgba(28, 28, 30, 0.72));
}

.update-item span {
  color: rgba(200, 200, 204, 0.58);
  font: 650 9px/1.3 var(--font-apple-mono);
  letter-spacing: 0.04em;
}

.update-item strong {
  font-size: 13px;
  font-weight: 650;
}

.update-item p {
  margin: 0;
  color: rgba(210, 210, 214, 0.62);
  font-size: 11px;
  line-height: 1.55;
}

.update-console-foot {
  padding: 12px 16px 16px;
  color: rgba(190, 190, 194, 0.5);
  font-size: 10px;
}

@media (max-width: 900px) {
  .update-shell {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 28px 22px;
    border-radius: 22px;
  }

  .update-copy h2 {
    max-width: none;
  }
}
.faq-section { background: #fff; }
.fit-section { background: var(--soft-gray); }
.site-footer { border-top: 1px solid var(--line); }
.footer-legal a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding-block: 10px;
}

/* Remove the green-beige cast inherited from the production theme. */
.eco-node {
  box-shadow: 0 18px 48px rgba(20, 20, 24, 0.08);
}

.learning-loop-product {
  border-color: var(--line);
  box-shadow: 0 28px 72px rgba(20, 20, 24, 0.1);
}

.learning-loop-copy p,
.learning-loop-steps p,
.learning-brief-preview p,
.demo-chrome,
.mock-nav-item,
.phone-simulation,
.site-footer,
.consult-form > label,
.consult-form fieldset,
.lead-summary {
  color: #6e6e73;
}

.learning-loop-steps li,
.learning-brief-preview,
.demo-chrome,
.consult-form input[type="text"],
.consult-form textarea {
  border-color: var(--line);
}

.main-nav.open,
.consult-dialog {
  border-color: rgba(255, 255, 255, 0.78);
  color: var(--ink);
  background: rgba(248, 248, 249, 0.92);
  box-shadow: 0 24px 72px rgba(0, 0, 0, 0.16), inset 0 0.5px rgba(255, 255, 255, 0.9);
  -webkit-backdrop-filter: blur(30px) saturate(1.04);
  backdrop-filter: blur(30px) saturate(1.04);
}

.main-nav.open {
  background: rgba(250, 250, 251, 0.985);
  -webkit-backdrop-filter: blur(34px) saturate(1.02);
  backdrop-filter: blur(34px) saturate(1.02);
}

.site-header:not(.scrolled) .main-nav.open :is(a, .nav-group-label),
.main-nav.open :is(a, .nav-group-label),
.consult-form > label,
.consult-form fieldset {
  color: #55565a;
}

.site-header:not(.scrolled) .main-nav.open a:hover,
.site-header:not(.scrolled) .main-nav.open a.active,
.site-header:not(.scrolled) .main-nav.open a[aria-current="page"],
.site-header .main-nav.open .nav-face a:hover,
.site-header .main-nav.open .nav-face a.active,
.site-header .main-nav.open .nav-face a[aria-current],
.site-header .main-nav.open .nav-face a:focus-visible {
  color: #111;
  background: rgba(0, 0, 0, 0.055);
}

.dialog-intro > p:last-child,
.consult-form > small,
.form-status,
.lead-summary {
  color: #6f7075;
}

.consult-form input[type="text"],
.consult-form textarea,
.problem-options span,
.lead-summary,
.dialog-close {
  background: rgba(255, 255, 255, 0.82);
}

.problem-options input:checked + span {
  border-color: rgba(0, 0, 0, 0.28);
  color: #111;
  background: rgba(0, 0, 0, 0.07);
}

.final-cta { border-top: 1px solid var(--line); }
.final-cta .cta-media {
  background-image: url("./assets/requiet-os-v4-cta-gray.svg");
  background-position: 72% center;
  background-size: cover;
  filter: none;
}

.final-cta .cta-brand-watermark {
  display: none;
}

.final-cta .cta-shade {
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.56) 56%, rgba(0, 0, 0, 0.18));
}

.final-cta .cta-copy h2 {
  max-width: 940px;
  font-size: clamp(48px, 4.2vw, 64px);
  text-wrap: balance;
}

.cta-mobile-break { display: none; }

.secondary-button.solid,
.header-cta,
.consult-submit {
  border-radius: 999px;
}

/* Product windows stay information-dense, while their primary story remains readable. */
.ai-command-tabs button { font-size: 9px; }
.ai-command-panel li { font-size: 9px; }
.command-event p { font-size: 13px; }
.smart-onboarding-nav strong { font-size: 11px; }
.smart-onboarding-nav small,
.onboarding-recommendations span { font-size: 9px; }
.capability-domain-list strong { font-size: 13px; }
.capability-domain-list small { font-size: 11px; }

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 900ms cubic-bezier(.22,.72,.2,1), transform 900ms cubic-bezier(.22,.72,.2,1);
}

.reveal.visible { opacity: 1; transform: translateY(0); }

@keyframes v4-copy-enter {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes v4-console-enter {
  from { opacity: 0; transform: translateY(calc(-50% + 34px)) perspective(1400px) rotateY(-3deg); }
  to { opacity: 1; transform: translateY(-50%) perspective(1400px) rotateY(-3deg) rotateX(1deg); }
}

@media (max-width: 1180px) {
  .hero-product { right: -54px; }
}

@media (max-width: 820px) {
  .section-pad { padding: 112px 24px; }

  .hero {
    min-height: 1180px;
    padding-bottom: 48px;
  }

  .hero-media,
  .cta-media {
    background-position: 38% center;
  }

  .hero-shade {
    background: linear-gradient(180deg, rgba(7,8,8,.82) 0%, rgba(7,8,8,.58) 44%, rgba(7,8,8,.2) 75%, rgba(7,8,8,.38) 100%);
  }

  .os-site .hero-copy {
    height: auto;
    min-height: 520px;
    padding-top: 142px;
    padding-bottom: 48px;
  }

  .os-site .hero h1 { font-size: 44px; }

  .hero-product {
    right: auto;
    width: calc(100% - 30px);
    height: 475px;
    margin: -34px auto 0;
    border-radius: 20px;
    animation-name: v4-console-enter-mobile;
  }

  .hero-product::before { border-radius: 19px; }

  .section-intro h2,
  .statement-inner h2,
  .benefit-heading h2,
  .pilot-copy h2,
  .cta-copy h2,
  .smart-onboarding-heading h2,
  .capability-atlas-heading h2,
  .governance-heading h2,
  .faq-heading h2,
  .fit-heading h2 {
    max-width: 100%;
    font-size: 36px;
    line-height: 1.16;
    word-break: normal;
    overflow-wrap: break-word;
  }

  .section-intro > p:last-child,
  .smart-onboarding-heading p,
  .capability-atlas-heading p,
  .governance-heading > p { margin-top: 26px; }

  .statement-inner { text-align: left; }
  .value-line { grid-template-columns: 1fr 1fr; margin-top: 52px; }
  .value-line span { padding: 20px 8px 20px 0; }
  .value-line span:nth-child(2) { border-right: 0; }
  .value-line span:nth-child(-n+2) { border-bottom: 1px solid var(--line); }

  .store-story {
    width: calc(100% + 32px);
    max-width: none;
    margin-top: 52px;
    margin-right: -16px;
    margin-left: -16px;
    border-radius: 16px;
    box-shadow: none;
    box-sizing: border-box;
  }

  .store-story-viewport { scroll-snap-type: x proximity; }

  .smart-onboarding-console,
  .capability-atlas,
  .demo-shell { border-radius: 24px; }

  .ai-supervision-feature { border-radius: 24px; }

  .os-value-prologue {
    gap: 28px;
    margin-bottom: 70px;
    padding-bottom: 64px;
  }

  .os-advisory {
    padding: 32px 24px;
    border-radius: 24px;
  }

  .os-advisory-inputs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .os-advisory-inputs > div,
  .os-advisory-inputs > div:first-child,
  .os-advisory-inputs > div:last-child,
  .os-advisory-inputs > div:nth-child(odd),
  .os-advisory-inputs > div:nth-child(even),
  .os-advisory-inputs > div:nth-child(n+3) {
    min-height: 166px;
    padding: 20px;
    border: 1px solid rgba(0, 0, 0, 0.07);
  }

  .ai-takeover-case {
    border-radius: 24px;
  }

  .smart-onboarding-heading,
  .capability-atlas-heading { margin-bottom: 52px; }
  .smart-onboarding-values { margin-top: 42px; }

  .demo-heading { align-items: stretch; flex-direction: column; gap: 14px; }
  .demo-tabs {
    align-self: stretch;
    display: flex;
    gap: 4px;
    margin-top: 0;
    overflow-x: auto;
    padding: 4px;
    border: 0;
    border-radius: 14px;
    background: var(--quiet-gray, #f1f1f1);
    scrollbar-width: none;
  }
  .demo-tabs::-webkit-scrollbar { display: none; }
  .demo-tabs button {
    flex: 1 1 0;
    min-width: 0;
    min-height: 42px;
    padding: 0 10px;
    border-radius: 11px;
    color: #666;
    background: transparent;
    box-shadow: none;
  }
  .demo-tabs button.active {
    color: #111;
    background: #fff;
    box-shadow: 0 1px 2px rgba(20, 20, 24, 0.06);
  }
  .management-questions {
    display: none;
  }
  .demo-shell {
    margin-top: 14px;
    border-radius: 20px;
  }

  .ai-supervision-feature { margin-top: 68px; padding: 46px 20px; border-radius: 18px; }

  .governance-grid { margin-top: 56px; }
}

@media (max-width: 900px) and (max-height: 600px) and (orientation: landscape) {
  .hero {
    min-height: 600px;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(7, 8, 8, 0.86) 0%, rgba(7, 8, 8, 0.62) 36%, rgba(7, 8, 8, 0.16) 76%, rgba(7, 8, 8, 0.08)),
      linear-gradient(0deg, rgba(0, 0, 0, 0.28), transparent 52%);
  }

  .hero-copy {
    width: min(40%, 360px);
    max-width: 360px;
    margin-right: auto;
    margin-left: 24px;
    padding-top: 128px;
  }

  .os-site .hero h1 {
    max-width: 360px;
    font-size: clamp(38px, 6vw, 48px);
  }

  .hero-claim {
    margin-top: 18px;
    font-size: 16px;
  }

  .hero-lede {
    max-width: 340px;
    font-size: 12px;
    line-height: 1.7;
  }

  .hero-actions {
    margin-top: 22px;
  }

  .hero .primary-button {
    min-height: 44px;
    padding-inline: 22px;
    font-size: 13px;
  }

  .hero-product {
    top: 55%;
    left: auto;
    right: 14px;
    width: min(48vw, 396px);
    height: 318px;
    border-radius: 18px;
    transform: translateY(-50%) perspective(1200px) rotateY(-2deg) rotateX(.6deg);
  }

  .hero-product::before {
    border-radius: 17px;
  }

  .mac-bar {
    height: 42px;
    padding-inline: 14px;
  }

  .ai-command-head {
    min-height: 62px;
    padding: 14px 16px;
  }

  .ai-command-grid {
    grid-template-columns: 108px 1fr 88px;
  }

  .ai-command-journey {
    padding-inline: 14px;
  }
}

@media (max-width: 560px) {
  .section-pad { padding: 100px 24px; }

  .hero { min-height: 1040px; }
  .os-site .hero-copy { height: auto; min-height: 460px; padding-top: 126px; padding-bottom: 28px; }
  .os-site .hero h1 { font-size: 39px; }
  #problem-title,
  .section-intro h2,
  .statement-inner h2,
  .benefit-heading h2,
  .pilot-copy h2,
  .smart-onboarding-heading h2,
  .capability-atlas-heading h2,
  .governance-heading h2,
  .faq-heading h2,
  .fit-heading h2 { font-size: 32px; }
  .hero-claim { max-width: 330px; margin-top: 20px; font-size: 18px; }
  .hero-lede { max-width: 320px; font-size: 13px; }
  .hero-actions { margin-top: 24px; }
  .hero-actions .primary-button { min-width: 0; }
  .hero-product.digital-matrix-product,
  .digital-matrix-product { height: 540px; margin-top: -24px; }

  .ai-command-tabs button { font-size: 9px; }
  .ai-command-panel li { font-size: 10px; }
  .ai-command-head small,
  .ai-command-footer,
  .command-event span,
  .command-camera small,
  .command-booking span,
  .command-booking > b,
  .command-metrics small,
  .command-advice span { font-size: 9px; }

  .store-story-meta,
  .store-story-toolbar,
  .store-story-detail { margin-inline: 16px; }
  .store-story-detail h3 { font-size: 21px; }

  /* Complex graphic modules hug the screen; section copy keeps normal inset. */
  .demo-shell,
  .smart-onboarding-console,
  .capability-atlas,
  .ai-supervision-feature,
  .ai-takeover-case,
  .pain-journey,
  .os-advisory {
    width: calc(100% + 32px);
    max-width: none;
    margin-right: -16px;
    margin-left: -16px;
    box-sizing: border-box;
    border-radius: 16px;
  }

  .os-value-lead h2 {
    font-size: 32px;
    white-space: normal;
  }

  :root {
    --content-width: calc(100% - 40px);
  }

  .smart-onboarding-console,
  .capability-atlas,
  .demo-shell,
  .ai-supervision-feature,
  .os-advisory,
  .ai-takeover-case,
  .pain-journey {
    border-radius: 22px;
  }

  .os-advisory-heading,
  .os-advisory-strategy {
    grid-template-columns: 1fr;
  }

  .os-advisory-inputs {
    grid-template-columns: 1fr;
  }

  .os-advisory-inputs > div,
  .os-advisory-inputs > div:first-child,
  .os-advisory-inputs > div:last-child,
  .os-advisory-inputs > div:nth-child(odd),
  .os-advisory-inputs > div:nth-child(even),
  .os-advisory-inputs > div:nth-child(n+3) {
    min-height: 0;
    padding: 22px;
  }

  .os-advisory-bridge {
    padding: 22px;
  }

  .os-value-outcomes {
    grid-template-columns: 1fr;
  }

  .os-value-outcomes article,
  .os-value-outcomes article:not(:last-child) {
    min-height: 0;
    padding: 24px 22px;
  }

  .pain-journey {
    margin-top: 46px;
  }

  #architecture-title,
  #ecosystem-title,
  #capability-title {
    font-size: 31px;
    letter-spacing: 0;
  }

  .smart-onboarding-report h3 { font-size: 20px; }
  .chain-copy h3 { font-size: 27px; }
  #duty-agent-title { font-size: 25px; }
  #measure-title { font-size: 28px; }

  .statement-band { padding: 100px 24px; }
  .value-line b { font-size: 18px; }

  .capability-atlas-section { padding-right: 12px; padding-left: 12px; }
  .capability-atlas-heading { padding-inline: 12px; }
  .capability-rail-group span { font-size: 9px; }
  .capability-detail p { font-size: 13px; }
  .capability-detail-features span { font-size: 11px; }
  .capability-outcomes { padding-inline: 12px; }

  .final-cta .cta-copy h2 {
    max-width: 100%;
    font-size: 34px;
    line-height: 1.18;
    word-break: normal;
    overflow-wrap: break-word;
  }

  .cta-mobile-break { display: inline; }
}

@media (max-width: 380px) {
  .smart-onboarding-report h3 { font-size: 19px; }
}

@keyframes v4-console-enter-mobile {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-copy,
  .hero-product { animation: none; }
  .reveal { transition: none; }
}

/* Keep the digital employee window tall enough for its full matrix after the
   shared mobile hero sizing rules have been applied. */
.digital-matrix-product { height: 530px; }

@media (max-width: 700px) {
  .digital-matrix-product {
    width: calc(100% - 24px);
    max-width: none;
    height: 540px;
    margin-top: -18px;
    margin-right: auto;
    margin-left: auto;
    border-radius: 18px;
  }

  .digital-matrix-product .digital-matrix {
    --hub-x: 50%;
    --hub-y: 38%;
    --orbit-x: 34%;
    --orbit-y: 28%;
  }

  .digital-matrix-product .digital-agent {
    width: min(102px, 27vw);
    min-height: 38px;
    right: auto;
    bottom: auto;
    transform: translate(-50%, -50%);
  }

  .digital-matrix-product .digital-agent:hover,
  .digital-matrix-product .digital-agent:focus-visible,
  .digital-matrix-product .digital-agent.is-selected {
    transform: translate(-50%, calc(-50% - 2px));
  }

  .digital-matrix-product .digital-agent b {
    display: none;
  }

  .digital-matrix-product .digital-agent-social {
    left: calc(var(--hub-x) + var(--orbit-x) * cos(115.71deg));
    top: calc(var(--hub-y) - var(--orbit-y) * sin(115.71deg));
  }
  .digital-matrix-product .digital-agent-meituan {
    left: calc(var(--hub-x) + var(--orbit-x) * cos(64.29deg));
    top: calc(var(--hub-y) - var(--orbit-y) * sin(64.29deg));
  }
  .digital-matrix-product .digital-agent-appearance {
    left: calc(var(--hub-x) + var(--orbit-x) * cos(12.86deg));
    top: calc(var(--hub-y) - var(--orbit-y) * sin(12.86deg));
  }
  .digital-matrix-product .digital-agent-attendance {
    left: calc(var(--hub-x) + var(--orbit-x) * cos(-38.57deg));
    top: calc(var(--hub-y) - var(--orbit-y) * sin(-38.57deg));
  }
  .digital-matrix-product .digital-agent-policy {
    left: calc(var(--hub-x) + var(--orbit-x) * cos(-90deg));
    top: calc(var(--hub-y) - var(--orbit-y) * sin(-90deg));
  }
  .digital-matrix-product .digital-agent-payroll {
    left: calc(var(--hub-x) + var(--orbit-x) * cos(-141.43deg));
    top: calc(var(--hub-y) - var(--orbit-y) * sin(-141.43deg));
  }
  .digital-matrix-product .digital-agent-hygiene {
    left: calc(var(--hub-x) + var(--orbit-x) * cos(167.14deg));
    top: calc(var(--hub-y) - var(--orbit-y) * sin(167.14deg));
  }

  .digital-matrix-product .digital-core {
    top: var(--hub-y);
    left: var(--hub-x);
  }

  .digital-matrix-product .digital-matrix::after,
  .digital-matrix-product .digital-matrix::before {
    display: none;
  }

  .digital-matrix-product .digital-matrix-grid {
    opacity: 0.18;
  }

  .digital-matrix-product .digital-link {
    top: var(--hub-y);
    left: var(--hub-x);
    width: 28%;
  }

  .digital-matrix-product .digital-link-social { transform: rotate(-115.71deg); }
  .digital-matrix-product .digital-link-meituan { transform: rotate(-64.29deg); }
  .digital-matrix-product .digital-link-appearance { transform: rotate(-12.86deg); }
  .digital-matrix-product .digital-link-attendance { transform: rotate(38.57deg); }
  .digital-matrix-product .digital-link-policy { transform: rotate(90deg); }
  .digital-matrix-product .digital-link-payroll { transform: rotate(141.43deg); }
  .digital-matrix-product .digital-link-hygiene { transform: rotate(-167.14deg); }

  .digital-matrix-product .digital-detail {
    display: grid;
    right: 10px;
    left: 10px;
    bottom: 6px;
    width: auto;
    gap: 3px;
    padding: 8px 10px;
    border-radius: 12px;
    transform: none;
  }

  .digital-matrix-product .digital-detail::before {
    display: none;
  }

  .digital-matrix-product .digital-detail p {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-size: 8px;
    line-height: 1.45;
  }

  .digital-matrix-product .digital-matrix-footer {
    padding-bottom: 2px;
  }
}