/* Viewport, input-mode, accessibility and motion preference adaptations. */

@media (hover: hover) and (pointer: fine) {
  .concept-page .concept-nav a:hover::after {
    transform: scaleX(1);
    transform-origin: left center;
  }

  .concept-page .button:hover {
    transform: translateY(-2px);
  }

  .concept-page .button:active {
    transform: scale(.97);
  }

  .concept-text-link:hover .ph {
    transform: translateX(3px);
  }

  .concept-viewer-shell .viewer-back:hover,
  .concept-viewer-shell .topbar-button:hover {
    background: var(--ink);
    color: white;
  }
}

@media (max-width: 1120px) {
  .concept-hero {
    grid-template-columns: minmax(0, .9fr) minmax(420px, 1.1fr);
    gap: 34px;
  }

  .concept-section-heading p {
    max-width: 62ch;
  }

  .concept-workflow {
    grid-template-columns: 1fr;
  }

  .concept-workflow-copy {
    max-width: 800px;
  }

  .concept-workflow-track {
    min-height: 0;
  }
}

@media (max-width: 960px) {
  .concept-page .concept-nav {
    align-items: flex-start;
    justify-content: center;
    gap: 18px;
    padding-left: var(--pad);
  }

  .concept-page .concept-nav a {
    font-family: Georgia, serif;
    font-size: clamp(38px, 9vw, 66px);
    font-weight: 400;
    letter-spacing: -.04em;
  }

  .concept-page .concept-nav a::after {
    display: none;
  }

  .concept-nav-cta {
    display: none;
  }

  .concept-hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 112px;
    padding-bottom: 70px;
  }

  .concept-hero-copy {
    max-width: 760px;
    min-height: 440px;
  }

  .concept-hero-visual {
    height: min(62vw, 520px);
  }

  .concept-viewer-shell .viewer-stage {
    height: 65vw;
    min-height: 470px;
  }

  .concept-capability-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
  }

  .concept-capability-primary {
    grid-column: 1 / -1;
    grid-row: auto;
    min-height: 400px;
  }

  .concept-contact {
    grid-template-columns: 1fr;
    align-items: start;
    margin-right: var(--pad);
    margin-left: var(--pad);
  }

  .concept-contact-action {
    justify-self: start;
  }

  .concept-footer p {
    display: none;
  }
}

@media (max-width: 760px) {
  .concept-page .site-header.concept-header,
  .concept-page .site-header.concept-header.scrolled {
    min-height: 68px;
  }

  .concept-brand-lockup {
    width: 158px;
  }

  .concept-hero {
    gap: 34px;
    padding-top: 104px;
  }

  .concept-eyebrow {
    margin-bottom: 19px;
  }

  .concept-hero h1 {
    max-width: 630px;
    font-size: clamp(50px, 14vw, 78px);
  }

  .concept-hero-lead {
    margin-top: 20px;
  }

  .concept-hero-actions {
    margin-top: 26px;
    min-height: 58px;
  }

  .concept-hero-visual {
    height: 390px;
  }

  .concept-section-heading h2,
  .concept-capabilities h2,
  .concept-workflow h2,
  .concept-contact h2 {
    font-size: clamp(40px, 11vw, 62px);
  }

  .concept-viewer-shell .viewer-topbar,
  .concept-viewer-shell .viewer-bottombar {
    min-height: 62px;
    padding-right: 11px;
    padding-left: 11px;
  }

  .concept-viewer-shell .viewer-stage {
    height: 120vw;
    min-height: 470px;
    max-height: 620px;
  }

  .concept-viewer-shell .topbar-button {
    min-width: 40px;
    min-height: 40px;
    justify-content: center;
    padding: 0;
  }

  .concept-viewer-shell .topbar-button b,
  .building-draft-note {
    display: none;
  }

  .concept-viewer-shell .viewer-back {
    width: 40px;
    height: 40px;
  }

  .concept-viewer-shell .view-button {
    min-width: 42px;
    min-height: 42px;
    justify-content: center;
    padding: 0 8px;
  }

  .concept-capability-grid {
    grid-template-columns: 1fr;
  }

  .concept-capability,
  .concept-capability-primary {
    min-height: 310px;
  }

  .concept-capability-primary {
    grid-column: auto;
  }

  .concept-workflow-track {
    padding-left: 22px;
  }

  .concept-workflow-line {
    left: 5px;
  }

  .concept-workflow-track article {
    grid-template-columns: 58px 1fr;
    column-gap: 17px;
    padding: 19px;
  }

  .concept-workflow-track article > span {
    width: 52px;
    height: 52px;
  }

  .concept-contact {
    padding: 34px 26px;
  }
}

@media (max-width: 520px) {
  .concept-brand-lockup {
    width: 146px;
  }

  .concept-hero-actions {
    align-items: stretch;
    flex-direction: column;
    gap: 10px;
  }

  .concept-primary-action {
    justify-content: space-between;
    width: 100%;
  }

  .concept-text-link {
    justify-content: space-between;
    width: 100%;
    padding: 0 4px;
  }

  .concept-hero-visual {
    min-height: 330px;
  }

  .concept-visual-caption {
    right: 10px;
    bottom: 10px;
    left: 10px;
  }

  .concept-visual-caption span {
    font-size: var(--fs-micro);
  }

  .concept-hero-mark {
    width: 180px;
  }

  .concept-proof,
  .concept-capabilities,
  .concept-workflow {
    padding-top: 84px;
    padding-bottom: 84px;
  }

  .concept-viewer-shell .viewer-status {
    display: none;
  }

  .concept-viewer-shell .viewer-title .viewer-kicker {
    font-size: var(--fs-label-s);
    letter-spacing: .08em;
  }

  .concept-viewer-shell .viewer-title strong {
    max-width: 210px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .concept-viewer-shell .viewer-stage {
    height: 132vw;
    min-height: 500px;
  }

  .concept-viewer-shell .floor-panel {
    top: 12px;
    left: 12px;
  }

  .concept-viewer-shell .viewer-hint {
    bottom: 11px;
  }

  .concept-viewer-shell .viewer-hint > span {
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .concept-capability {
    flex-direction: column;
  }

  .concept-capability > div {
    align-self: start;
  }

  .concept-footer {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 1180px) and (min-width: 961px) {
  .concept-hero {
    grid-template-columns: minmax(330px, .72fr) minmax(0, 1.28fr);
  }

  .concept-hero h1 {
    font-size: clamp(68px, 7vw, 86px);
  }

  .concept-proof {
    width: 61vw;
  }

  .concept-hero-facts span {
    font-size: var(--fs-micro);
  }
}

@media (max-width: 960px) {
  .concept-page main {
    overflow: hidden;
  }

  .concept-page .site-header.concept-header,
  .concept-page .site-header.concept-header.scrolled {
    backdrop-filter: blur(18px) saturate(145%);
    -webkit-backdrop-filter: blur(18px) saturate(145%);
  }

  .menu-open.concept-page .site-header.concept-header,
  .menu-open.concept-page .site-header.concept-header.scrolled {
    background: transparent;
    border-color: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .concept-page .concept-nav {
    z-index: 2;
    width: 100vw;
    height: 100dvh;
    padding: 100px var(--pad) 56px;
    overflow-y: auto;
    background:
      linear-gradient(color-mix(in srgb, var(--palette-forest-deep) 7%, transparent) 1px, transparent 1px),
      linear-gradient(90deg, color-mix(in srgb, var(--palette-forest-deep) 7%, transparent) 1px, transparent 1px),
      var(--acid);
    background-size: 48px 48px, 48px 48px, auto;
  }

  .menu-open .concept-brand,
  .menu-open .concept-header-actions {
    position: relative;
    z-index: 3;
  }

  .concept-hero {
    display: block;
    min-height: auto;
    padding-top: 126px;
    padding-bottom: 68px;
  }

  .concept-hero::before {
    top: auto;
    right: -30%;
    bottom: 30px;
    width: 110%;
    height: 390px;
  }

  .concept-hero-copy {
    max-width: 740px;
    padding-top: 0;
  }

  .concept-hero h1 {
    max-width: 8ch;
    font-size: clamp(70px, 13vw, 108px);
  }

  .concept-hero-facts {
    max-width: 700px;
    margin-top: 54px;
  }

  .concept-hero-visual {
    position: relative;
    top: auto;
    right: auto;
    width: 100%;
    height: min(58vw, 480px);
    margin-top: 46px;
    border: 1px solid color-mix(in srgb, var(--palette-forest-deep) 18%, transparent);
    border-radius: 8px;
    opacity: .85;
    -webkit-mask-image: none;
    mask-image: none;
  }

  .concept-proof {
    position: relative;
    top: auto;
    right: auto;
    width: auto;
    padding: 100px var(--pad);
    background: var(--paper-bright);
  }

  .concept-proof .concept-section-heading {
    display: grid;
    margin: 0 0 44px;
  }

  .concept-proof .concept-section-heading h2 {
    max-width: 760px;
    font-size: clamp(48px, 8vw, 78px);
    text-align: left;
  }

  .concept-proof .concept-section-heading p {
    display: block;
    max-width: 620px;
  }

  .concept-viewer-shell .viewer-stage {
    height: 65vw;
    min-height: 500px;
  }

  .concept-capabilities {
    margin: 0;
  }

  .concept-capabilities > header {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .concept-capability-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: repeat(2, minmax(300px, auto));
  }

  .concept-capability-primary,
  .concept-capability-acid,
  .concept-capability-coral,
  .concept-capability-blue {
    grid-column: auto;
    grid-row: auto;
  }

  .concept-why {
    grid-template-columns: 1fr;
    margin: 12px 0;
  }

  .concept-why > header {
    max-width: 780px;
  }
}

@media (max-width: 620px) {
  .concept-brand-lockup {
    width: 150px;
  }

  .concept-header-actions {
    gap: 7px;
    padding-right: 52px;
  }

  .concept-page .lang-current {
    min-width: 74px;
    /* Was 38px. The desktop rule already sets 44px; shrinking it below the
       touch minimum on the smallest screens is backwards — that is the one
       viewport where the control is guaranteed to be tapped, not clicked.
       Only the horizontal padding tightens here. */
    min-height: var(--tap);
    padding-right: 9px;
    padding-left: 9px;
  }

  .concept-page .lang-current-label {
    font-size: var(--fs-micro);
  }

  .concept-hero h1 {
    font-size: clamp(58px, 17vw, 76px);
  }

  .concept-hero-facts {
    grid-template-columns: 1fr;
  }

  .concept-hero-facts article {
    grid-template-columns: 30px 34px 1fr;
    align-items: center;
    min-height: 72px;
    padding: 12px 0;
  }

  .concept-hero-facts article + article {
    padding-left: 0;
    border-top: 1px solid color-mix(in srgb, var(--palette-forest-deep) 20%, transparent);
    border-left: 0;
  }

  .concept-hero-facts .ph {
    grid-row: auto;
    margin-top: 0;
  }

  .concept-hero-facts strong,
  .concept-hero-facts span {
    align-self: center;
  }

  .concept-hero-visual {
    height: 190px;
    margin-top: 32px;
  }

  .concept-proof {
    padding-top: 82px;
    padding-bottom: 82px;
  }

  .concept-proof .concept-section-heading h2 {
    font-size: clamp(42px, 13vw, 60px);
  }

  .concept-capability-grid {
    grid-template-columns: 1fr;
    grid-template-rows: none;
  }

  .concept-capability {
    min-height: 290px;
  }

  .concept-why {
    padding: 82px 24px;
  }

  .concept-why-grid {
    grid-template-columns: 1fr;
  }

  .concept-why-grid article {
    min-height: 290px;
  }

  .concept-why h2,
  .concept-capabilities > header h2,
  .concept-workflow-copy h2,
  .concept-contact h2 {
    font-size: clamp(43px, 13vw, 62px);
  }

  .concept-contact {
    margin: 8px;
    padding: 64px 24px;
  }
}

@media (max-width: 1120px) and (min-width: 961px) {
  .concept-hero {
    min-height: 760px;
  }

  .concept-hero h1 {
    font-size: clamp(66px, 7vw, 82px);
  }

  .concept-proof {
    width: 60vw;
  }

  .concept-why,
  .concept-workflow {
    grid-template-columns: minmax(300px, .8fr) minmax(500px, 1.2fr);
    gap: 42px;
  }

  .concept-why-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 960px) {
  .concept-page .site-header.concept-header,
  .concept-page .site-header.concept-header.scrolled {
    min-height: 68px;
    background: color-mix(in srgb, var(--palette-soft-ivory-bright) 97%, transparent);
  }

  .concept-hero {
    min-height: auto;
    padding-top: 116px;
    padding-bottom: 72px;
  }

  .concept-hero h1 {
    max-width: 8ch;
    font-size: clamp(58px, 10vw, 76px);
  }

  .concept-hero-visual {
    height: min(48vw, 360px);
    min-height: 250px;
    margin-top: 36px;
  }

  .concept-proof {
    width: auto;
    padding: 88px var(--pad);
  }

  .concept-proof .concept-section-heading {
    display: grid;
    gap: 20px;
    margin: 0 0 40px;
  }

  .concept-proof .concept-section-heading h2 {
    max-width: 720px;
    font-size: clamp(46px, 7vw, 66px);
    line-height: .98;
    letter-spacing: -.04em;
  }

  .concept-viewer-shell .viewer-stage {
    height: 63vw;
    min-height: 470px;
  }

  .concept-sales-thesis {
    width: auto;
    margin-right: 0;
    margin-left: 0;
    padding: 72px var(--pad);
  }

  .concept-capabilities {
    margin: 0;
  }

  .concept-capability-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(2, minmax(270px, 1fr));
  }

  .concept-capability,
  .concept-capability-primary,
  .concept-capability-acid,
  .concept-capability-coral,
  .concept-capability-blue {
    min-height: 270px;
  }

  .concept-why,
  .concept-workflow {
    grid-template-columns: 1fr;
  }

  .concept-why > header,
  .concept-workflow-copy {
    max-width: 760px;
  }

  .concept-why-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .concept-hero {
    padding-top: 104px;
    padding-bottom: 62px;
  }

  .concept-hero h1 {
    font-size: clamp(48px, 14.5vw, 64px);
    line-height: .92;
  }

  .concept-hero-lead {
    font-size: 15px;
  }

  .concept-hero-facts {
    margin-top: 42px;
  }

  .concept-hero-visual {
    height: 180px;
    min-height: 180px;
    margin-top: 28px;
  }

  .concept-proof {
    padding-top: 76px;
    padding-bottom: 76px;
  }

  .concept-proof .concept-section-heading h2 {
    font-size: clamp(40px, 12vw, 54px);
  }

  .concept-viewer-shell .viewer-stage {
    height: 132vw;
    min-height: 500px;
  }

  .concept-sales-thesis {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 58px 22px;
  }

  .concept-sales-thesis::before {
    left: 22px;
  }

  .concept-sales-thesis-label {
    max-width: 220px;
    padding-top: 0;
  }

  .concept-sales-thesis blockquote p {
    font-size: clamp(23px, 7vw, 30px);
    line-height: 1.12;
    letter-spacing: -.03em;
  }

  .concept-sales-thesis blockquote footer {
    margin-top: 22px;
  }

  .concept-capabilities {
    padding: 76px 22px;
  }

  .concept-capabilities > header {
    display: block;
  }

  .concept-capabilities > header > span {
    display: block;
    margin-bottom: 18px;
    padding-top: 0;
  }

  .concept-capabilities > header h2,
  .concept-why h2,
  .concept-workflow-copy h2,
  .concept-contact h2 {
    font-size: clamp(40px, 12vw, 56px);
  }

  .concept-capability-grid,
  .concept-why-grid {
    grid-template-columns: 1fr;
    grid-template-rows: none;
  }

  .concept-capability,
  .concept-capability-primary,
  .concept-capability-acid,
  .concept-capability-coral,
  .concept-capability-blue {
    min-height: 280px;
  }

  .concept-capability {
    flex-direction: row;
    gap: 22px;
  }

  .concept-capability > .ph {
    font-size: 40px;
  }

  .concept-why {
    margin: 8px 0;
    padding: 76px 22px;
  }

  .concept-why-grid {
    grid-auto-rows: auto;
  }

  .concept-why-grid article {
    min-height: 320px;
  }

  .concept-workflow {
    padding: 76px 22px;
  }

  .concept-workflow-plan {
    width: min(100%, 390px);
    height: 188px;
    margin-top: 28px;
  }

  .concept-plan-sheet {
    left: 44%;
    width: min(78%, 300px);
  }

  .concept-workflow-track {
    padding-left: 20px;
  }

  .concept-workflow-line {
    left: 4px;
  }

  .concept-workflow-track article,
  .concept-workflow-track article:nth-of-type(2),
  .concept-workflow-track article:nth-of-type(3) {
    grid-template-columns: 52px 1fr;
    min-height: 222px;
    column-gap: 14px;
    padding: 20px 16px;
  }

  .concept-workflow-track article > span,
  .concept-workflow-track article:nth-of-type(2) > span,
  .concept-workflow-track article:nth-of-type(3) > span {
    width: 46px;
    height: 46px;
  }

  .concept-contact {
    margin: 8px;
    padding: 64px 22px;
  }
}

@media (min-width: 1400px) {
  .concept-hero {
    padding-bottom: 24px;
  }

  .concept-proof {
    width: min(56vw, 880px);
  }

  .concept-viewer-shell .viewer-stage {
    height: min(37vw, 520px);
    min-height: 500px;
  }

  .concept-capabilities {
    box-sizing: border-box;
    width: min(calc(100% - (2 * var(--pad))), var(--concept-max));
    margin-right: auto;
    margin-left: auto;
    padding: 64px 44px;
  }

  .concept-capabilities > header {
    grid-template-columns: 180px minmax(0, 1fr);
    margin-bottom: 36px;
  }

  .concept-capabilities > header h2 {
    max-width: 1000px;
    font-size: clamp(58px, 4.4vw, 70px);
  }

  .concept-capability-grid {
    grid-template-rows: repeat(2, minmax(220px, 1fr));
  }

  .concept-capability,
  .concept-capability-primary,
  .concept-capability-acid,
  .concept-capability-coral,
  .concept-capability-blue {
    min-height: 220px;
    padding: 28px;
  }

  .concept-capability > .ph {
    font-size: 48px;
  }

  .concept-capability h3 {
    font-size: clamp(30px, 2.5vw, 40px);
  }

  .concept-capability p {
    font-size: 13px;
    line-height: 1.5;
  }

  .concept-why {
    box-sizing: border-box;
    grid-template-columns: minmax(400px, .75fr) minmax(700px, 1.25fr);
    gap: 48px;
    width: min(calc(100% - (2 * var(--pad))), var(--concept-max));
    margin-right: auto;
    margin-left: auto;
    padding: 64px 48px;
  }

  .concept-why > header > span {
    margin-bottom: 20px;
  }

  .concept-why h2 {
    font-size: clamp(48px, 3.8vw, 60px);
  }

  .concept-why > header > p {
    margin-top: 22px;
    font-size: 14px;
    line-height: 1.55;
  }

  .concept-why-grid {
    grid-auto-rows: minmax(250px, 1fr);
  }

  .concept-why-grid article {
    min-height: 250px;
    padding: 24px;
  }

  .concept-why-grid .ph {
    margin-bottom: 20px;
    font-size: 32px;
  }

  .concept-why-grid h3 {
    font-size: clamp(25px, 1.85vw, 30px);
  }

  .concept-why-grid p {
    margin-top: 11px;
    font-size: 12px;
    line-height: 1.5;
  }

  .concept-workflow {
    grid-template-columns: minmax(400px, .65fr) minmax(0, 1.35fr);
    gap: 48px;
    padding-top: 56px;
    padding-bottom: 56px;
  }

  .concept-workflow-copy h2 {
    font-size: clamp(44px, 3.2vw, 52px);
  }

  .concept-workflow-copy p {
    margin-top: 22px;
    font-size: 13px;
    line-height: 1.55;
  }

  .concept-workflow-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    padding-left: 0;
    background: color-mix(in srgb, var(--palette-forest-deep) 16%, transparent);
  }

  .concept-workflow-line {
    display: none;
  }

  .concept-workflow-track article,
  .concept-workflow-track article:nth-of-type(2),
  .concept-workflow-track article:nth-of-type(3) {
    grid-template-columns: 1fr;
    align-content: start;
    min-height: 238px;
    padding: 22px;
    border: 0;
    box-shadow: none;
  }

  .concept-workflow-track article > span,
  .concept-workflow-track article:nth-of-type(2) > span,
  .concept-workflow-track article:nth-of-type(3) > span {
    width: 48px;
    height: 48px;
    margin-bottom: 24px;
  }

  .concept-workflow-track h3 {
    font-size: clamp(22px, 1.7vw, 27px);
  }

  .concept-contact {
    box-sizing: border-box;
    width: min(calc(100% - (2 * var(--pad))), var(--concept-max));
    max-width: none;
    margin-right: auto;
    margin-left: auto;
    padding: 62px;
  }

  .concept-contact h2 {
    font-size: clamp(50px, 4.4vw, 68px);
  }
}

@media (min-width: 1400px) and (max-width: 2199px) {
  .concept-proof {
    right: 24px;
    width: min(55vw, 860px);
  }
}

@media (min-width: 1200px) and (max-width: 1399px) {
  .concept-proof {
    right: 20px;
    width: min(55vw, 760px);
  }
}

@media (min-width: 2200px) {
  :root {
    --concept-max: 1920px;
  }

  .concept-proof {
    right: max(var(--pad), calc((100vw - var(--concept-max)) / 2));
    width: min(46vw, 1120px);
  }

  .concept-viewer-shell .viewer-stage {
    height: 590px;
    min-height: 590px;
  }

  .concept-hero-visual {
    right: 0;
    width: min(77vw, 1480px);
    height: 760px;
  }

  .concept-hero::before {
    display: none;
  }

  .concept-capabilities,
  .concept-why,
  .concept-contact {
    width: min(calc(100% - (2 * var(--pad))), var(--concept-max));
  }

  .concept-workflow {
    max-width: var(--concept-max);
  }
}

@media (max-width: 1180px) {
  .concept-why-intro {
    grid-template-columns: minmax(300px, .82fr) minmax(460px, 1.18fr);
    gap: 38px;
  }

  .concept-why-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .concept-frame-corner {
    display: none;
  }

  .concept-why {
    width: auto;
    margin: 10px;
    padding: clamp(34px, 7vw, 56px);
  }

  .concept-why-intro {
    grid-template-columns: 1fr;
  }

  .concept-why-copy {
    max-width: 760px;
  }

  .concept-why-media-stage {
    min-height: min(62vw, 480px);
  }

  .concept-why-quote {
    grid-template-columns: 42px minmax(0, 1fr);
  }

  .concept-why-quote footer {
    grid-column: 2;
    padding: 14px 0 0;
    border-top: 1px solid color-mix(in srgb, var(--acid) 30%, transparent);
    border-left: 0;
  }
}

@media (max-width: 620px) {
  .concept-why {
    padding: 38px 20px 20px;
    border-radius: 10px;
  }

  .concept-why h2 {
    font-size: clamp(42px, 13vw, 58px);
  }

  .concept-twin-flow {
    gap: 6px;
  }

  .concept-twin-node {
    font-size: var(--fs-micro);
    letter-spacing: .06em;
  }

  .concept-twin-node > .ph {
    width: 46px;
    height: 46px;
  }

  .concept-twin-beam {
    top: 22px;
  }

  .concept-why-media-stage {
    min-height: 330px;
  }

  .concept-media-label {
    right: 12px;
    bottom: 12px;
    max-width: 70%;
    font-size: var(--fs-micro);
  }

  .concept-why-quote {
    display: block;
    margin-top: 34px;
    padding: 24px 20px;
  }

  .concept-why-quote > .ph {
    margin-bottom: 18px;
    font-size: 32px;
  }

  .concept-why-quote footer {
    margin-top: 18px;
  }

  .concept-why-grid {
    grid-template-columns: 1fr;
  }

  .concept-why-grid article,
  .concept-why-grid article:nth-child(2),
  .concept-why-grid article:nth-child(3),
  .concept-why-grid article:nth-child(4) {
    min-height: 0;
    padding: 24px 20px;
  }
}

@media (min-width: 2200px) {
  :root {
    /* Was 2160px, which left ~192px of dead margin each side at 2560.
       2380px brings the gutter to ~84px so the composition uses the screen. */
    --concept-max: 2380px;
  }

  .concept-hero {
    min-height: 836px;
    padding-bottom: 16px;
  }

  .concept-hero-copy {
    max-width: 600px;
  }

  .concept-hero-facts {
    margin-top: 24px;
  }

  .concept-hero-facts article {
    min-height: 76px;
  }

  .concept-proof {
    top: 88px;
    right: max(var(--pad), calc((100vw - var(--concept-max)) / 2));
    width: min(52vw, 1320px);
  }

  .concept-viewer-shell .viewer-stage {
    height: 580px;
    min-height: 580px;
  }

  .concept-capabilities {
    padding-top: 48px;
    padding-bottom: 60px;
  }

  .concept-capabilities > header {
    margin-bottom: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .concept-page *,
  .concept-page *::before,
  .concept-page *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 120ms !important;
  }

  [data-enter],
  [data-reveal],
  [data-twin-node],
  .concept-workflow-track article {
    opacity: 1 !important;
    transform: none !important;
  }

  .concept-shader-root,
  .concept-twin-shader {
    display: none;
  }

  .concept-frame-beam {
    animation: none;
    background: color-mix(in srgb, var(--coral) 52%, transparent);
  }

  .concept-scan-sweep {
    transform: translateY(270%);
  }
}

@media (prefers-reduced-transparency: reduce) {
  .concept-page .site-header.concept-header,
  .concept-visual-caption {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .concept-page .site-header.concept-header {
    background: var(--paper);
  }

  .concept-visual-caption {
    background: var(--ink);
  }
}

@media (max-width: 960px) {
  [data-theme="dark"] .concept-page .concept-nav {
    background:
      linear-gradient(color-mix(in srgb, var(--palette-soft-ivory-bright) 4%, transparent) 1px, transparent 1px),
      linear-gradient(90deg, color-mix(in srgb, var(--palette-soft-ivory-bright) 4%, transparent) 1px, transparent 1px),
      var(--acid);
    background-size: 48px 48px, 48px 48px, auto;
    color: var(--palette-forest-deep);
  }

  [data-theme="dark"] .concept-hero-visual {
    opacity: .65;
  }

  [data-theme="dark"] .concept-proof {
    background: var(--paper);
  }

  [data-theme="dark"] .concept-capabilities {
    border: 0;
  }
}

@media (max-width: 620px) {
  [data-theme="dark"] .concept-hero-visual {
    opacity: .5;
  }
}

@media (min-width: 1200px) and (max-width: 2199px) {
  .concept-proof {
    width: min(54vw, 820px);
  }

  .concept-hero-copy {
    max-width: min(35vw, 520px);
  }

  .concept-hero h1 {
    font-size: clamp(64px, 5.6vw, 84px);
  }
}

@media (max-width: 1320px) {
  .concept-viewer-shell .viewer-status {
    display: none;
  }

  .concept-viewer-shell .view-button {
    padding-right: 8px;
    padding-left: 8px;
  }
}

@media (max-width: 1080px) {
  .concept-viewer-shell .topbar-button b {
    display: none;
  }

  .concept-viewer-shell .topbar-button {
    justify-content: center;
    width: 36px;
    padding: 0;
  }

  .concept-viewer-shell .view-button b {
    display: none;
  }

  .concept-viewer-shell .view-button {
    justify-content: center;
    min-width: 38px;
    padding: 7px;
  }
}

@media (max-width: 620px) {
  .concept-viewer-shell .viewer-topbar {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 8px;
    min-height: 58px;
    padding: 8px 10px;
  }

  .concept-viewer-shell .viewer-tag {
    display: none;
  }

  .concept-viewer-shell .viewer-title {
    font-size: 13px;
  }

  .concept-viewer-shell .topbar-actions {
    gap: 5px;
  }

  .concept-viewer-shell .viewer-bottombar {
    min-height: 56px;
    padding: 7px 9px;
  }

  .concept-viewer-shell .view-controls {
    width: 100%;
    justify-content: space-between;
  }

  .concept-viewer-shell .view-button {
    min-width: 34px;
    min-height: 34px;
    padding: 6px;
  }

  .concept-viewer-shell .viewer-meta {
    display: none;
  }
}

/* Theme and motion finalization v12. Branding colors remain unchanged. */
@media (min-width: 961px) {
  .concept-page .concept-nav {
    gap: clamp(28px, 2.4vw, 44px);
  }

  .concept-page .concept-nav a {
    display: inline-flex;
    align-items: center;
    min-height: 48px;
    padding: 0 7px;
    font-size: clamp(16px, .7vw, 18px);
    font-weight: var(--fw-strong);
    letter-spacing: .005em;
  }
}

@media (min-width: 1400px) {
  .concept-workflow-track {
    gap: 12px;
    overflow: visible;
    border: 0;
    border-radius: 0;
    background: none;
  }

  .concept-workflow-track article,
  .concept-workflow-track article:nth-of-type(2),
  .concept-workflow-track article:nth-of-type(3) {
    border-radius: 14px;
  }
}

@media (max-width: 1399px) {
  .concept-workflow-track {
    overflow: visible;
    border-radius: 0;
  }

  .concept-workflow-track article,
  .concept-workflow-track article:nth-of-type(2),
  .concept-workflow-track article:nth-of-type(3) {
    border-radius: 12px;
  }
}

@media (min-width: 1200px) and (max-width: 2199px) {
  .concept-proof {
    right: calc((min(62vw, 920px) - min(54vw, 820px)) / 2);
  }
}

@media (min-width: 2200px) {
  .concept-proof {
    right: calc(
      max(0px, (100vw - var(--concept-max)) / 2)
      + (min(77vw, 1480px) - min(52vw, 1320px)) / 2
    );
  }
}

@media (max-width: 620px) {
  .concept-page .lang-current {
    min-width: 44px;
    padding-right: 10px;
    padding-left: 10px;
  }

  .concept-page .concept-nav-cta {
    min-height: 42px;
    padding-right: 14px;
    padding-left: 14px;
  }

  .concept-back-to-top {
    width: 64px;
    height: 64px;
  }

  .concept-back-to-top > span {
    font-size: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .concept-frame-beam {
    animation: none;
  }

  .concept-twin-node,
  .concept-twin-beam i {
    animation: none;
  }

  .concept-back-to-top {
    transition-duration: 0ms !important;
  }
}

@media (max-width: 960px) {
  .concept-capabilities > header > p {
    grid-column: 1 / -1;
    margin-top: 0;
  }

  .concept-capability-grid {
    grid-template-columns: 1fr;
    grid-template-rows: none;
  }

  .concept-faq {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .concept-faq-intro {
    position: static;
  }
}

@media (max-width: 620px) {
  .concept-capability,
  .concept-capability-primary,
  .concept-capability-acid,
  .concept-capability-coral,
  .concept-capability-blue {
    display: block;
    min-height: 590px;
    padding: 24px 20px;
  }

  .concept-business-visual {
    top: 48px;
    right: 12px;
    bottom: auto;
    left: 12px;
    width: auto;
    height: 244px;
  }

  .concept-capability > div:not(.concept-capability-index) {
    width: 100%;
    max-width: none;
    margin-top: 246px;
    margin-left: 0;
  }

  .concept-business-metric-label {
    min-height: 0;
  }

  .concept-business-note {
    text-align: left;
  }

  .concept-faq {
    gap: 30px;
    padding-top: 34px;
  }

  .concept-faq-intro > span {
    margin-bottom: 18px;
  }

  .concept-faq-intro h2 {
    font-size: clamp(38px, 13vw, 54px);
  }

  .concept-faq-list summary {
    grid-template-columns: 30px minmax(0, 1fr) 28px;
    gap: 10px;
    min-height: 68px;
  }

  .concept-faq-list summary strong {
    font-size: 19px;
  }

  .concept-faq-list details > p {
    padding: 0 28px 22px 40px;
  }
}

@media (min-width: 1200px) and (max-width: 1799px) {
  .concept-hero-copy {
    max-width: min(38vw, 560px);
  }

  .concept-hero h1 {
    font-size: clamp(44px, 3.25vw, 54px);
  }
}

@media (min-width: 1800px) and (max-width: 2199px) {
  .concept-hero-copy {
    max-width: 600px;
  }

  .concept-hero h1 {
    max-width: 11ch;
    font-size: 56px;
  }

  .concept-proof {
    right: 64px;
    width: min(49vw, 940px);
  }
}

@media (min-width: 2200px) {
  .concept-hero-copy {
    max-width: 650px;
  }

  .concept-hero h1 {
    max-width: 620px;
    font-size: clamp(58px, 2.7vw, 72px);
  }
}

@media (max-width: 960px) {
  .concept-hero h1 {
    max-width: 12ch;
    font-size: clamp(44px, 8vw, 68px);
  }
}

@media (max-width: 620px) {
  .concept-hero h1 {
    max-width: 100%;
    font-size: clamp(36px, 10vw, 46px);
    line-height: .96;
  }
}

@media (min-width: 1800px) {
  .concept-hero-visual {
    --scan-scale: .82;
    height: 720px;
  }
}

/* Cinematic hero collapse: the atmosphere remains, but the scan is framed
   more tightly as the available width falls. */
@media (max-width: 960px) {
  .concept-hero {
    display: block;
    width: min(100%, 888px);
    min-height: auto;
    padding-top: 116px;
    padding-bottom: 52px;
  }

  .concept-hero-copy {
    max-width: 760px;
  }

  .concept-hero h1 {
    max-width: 14ch;
    font-size: clamp(46px, 8vw, 64px);
    line-height: .96;
  }

  html[lang="ru"] .concept-hero h1,
  :lang(ru) .concept-hero h1 {
    font-size: clamp(42px, 7vw, 58px);
  }

  .concept-hero-visual {
    --scan-scale: .9;
    top: auto;
    max-width: none;
    height: clamp(360px, 68vw, 520px);
    margin-top: 48px;
    border-radius: 14px;
    opacity: 1;
  }

  [data-theme="dark"] .concept-hero-visual {
    opacity: 1;
  }

  .concept-capabilities {
    margin: 0;
    padding: 72px 32px;
  }
}

@media (max-width: 620px) {
  .concept-hero {
    padding-top: 98px;
    padding-bottom: 40px;
  }

  .concept-hero h1 {
    max-width: 100%;
    font-size: clamp(36px, 10.5vw, 44px);
    line-height: .98;
  }

  html[lang="ru"] .concept-hero h1,
  :lang(ru) .concept-hero h1 {
    font-size: clamp(36px, 10vw, 42px);
  }

  .concept-hero h1 em {
    margin-top: .22em;
    font-size: .68em;
    line-height: 1.08;
  }

  .concept-hero-lead {
    margin-top: 20px;
    font-size: 15px;
  }

  .concept-hero-actions {
    display: grid;
    justify-items: start;
    gap: 12px;
    margin-top: 24px;
  }

  .concept-primary-action {
    width: 100%;
  }

  .concept-hero-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 30px;
  }

  .concept-hero-facts article {
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    gap: 9px;
    min-height: 92px;
    padding: 14px 9px 12px 0;
  }

  .concept-hero-facts article + article {
    padding-left: 10px;
    border-top: 0;
    border-left: 1px solid var(--line);
  }

  .concept-hero-facts .ph {
    font-size: 18px;
  }

  .concept-hero-facts span {
    font-size: 9px;
    line-height: 1.3;
    letter-spacing: .025em;
  }

  .concept-hero-visual {
    --scan-scale: .94;
    height: clamp(300px, 78vw, 360px);
    min-height: 300px;
    margin-top: 30px;
    border-radius: 12px;
  }

  .concept-hero-visual::before {
    opacity: .42;
  }

  .concept-hero-visual .concept-shader-root.is-ready {
    opacity: .3;
  }

  .concept-capabilities {
    padding: 64px 20px;
  }

  .concept-capabilities > header h2 {
    font-size: clamp(36px, 10vw, 44px);
    line-height: 1;
  }
}

/* ---------------------------------------------------------------------------
   Touch targets
   ---------------------------------------------------------------------------
   On touch there is no hover to disambiguate a near-miss, so every control
   needs a finger-sized hit area. The viewer HUD is the tightest case: its
   floor and view buttons were 36x31 and 38px tall.

   Keyed on `pointer: coarse` OR a narrow viewport — deliberately not on the
   pointer alone. Desktop browsers in responsive-emulation mode, and hybrid
   touch laptops, report `pointer: fine` at phone widths, so a single signal
   silently skips exactly the case this is for.

   Only box metrics change here; no font-size or layout shifts, so the desktop
   composition is untouched.
   --------------------------------------------------------------------------- */
@media (pointer: coarse), (max-width: 760px) {
  .floor-buttons button,
  .concept-viewer-shell .floor-buttons button {
    height: var(--tap);
    width: 100%;
    min-width: var(--tap);
  }

  .floor-panel {
    width: calc(var(--tap) + 24px);
  }

  .room-button,
  .concept-viewer-shell .room-button {
    min-height: var(--tap);
  }

  .view-button,
  .concept-viewer-shell .view-button {
    min-height: var(--tap);
  }

  .topbar-button,
  .concept-viewer-shell .topbar-button,
  .viewer-back,
  .concept-viewer-shell .viewer-back {
    min-width: var(--tap);
    min-height: var(--tap);
  }

  .concept-page .lang-current,
  .concept-page .lang-option,
  .lang-current,
  .lang-option {
    min-height: var(--tap);
  }

  .tool-panel button {
    min-height: var(--tap);
  }

  .skip-link {
    min-height: var(--tap);
    display: inline-flex;
    align-items: center;
  }
}

/* Hero facts as mini cards, matching the .concept-capability bento surface
   language (background chip + radius) instead of a border-divided row.
   Appended unconditionally at the end of the last-loaded stylesheet so it
   wins over every breakpoint's divider styling above, at every viewport,
   without needing to touch each one individually. Grid columns, icon size
   and text sizing are untouched — only the divider/surface treatment
   changes. */
.concept-hero-facts {
  gap: 10px;
  border-top: 0;
  border-bottom: 0;
}

.concept-hero-facts article {
  border-radius: var(--radius-m);
  background: var(--paper-bright);
}

.concept-hero-facts article + article {
  border-top: 0;
  border-left: 0;
}

/* ---------------------------------------------------------------------------
   Hero facts, restyled (27 July 2026)
   ---------------------------------------------------------------------------
   The dated look came from the type, not the layout: 10px uppercase with
   .06em tracking in a cramped two-column box reads like a 2015 feature badge.
   This drops the tracked caps for sentence-case body text, promotes the icon
   into an accent chip matching the workflow steps, and gives the card real
   padding. The hidden `strong` (01/02/03) stays hidden — the numbering was
   already redundant next to three items.

   Appended at the end of the last-loaded stylesheet, same as the mini-card
   rules above: that way it wins over every breakpoint's version of these
   selectors without editing each @media block separately.
   --------------------------------------------------------------------------- */
.concept-hero-facts article {
  grid-template-columns: minmax(0, 1fr);
  align-content: start;
  gap: 14px;
  min-height: 0;
  height: auto;
  padding: 18px;
  border: 1px solid var(--line);
}

.concept-hero-facts .ph {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  margin: 0;
  grid-row: auto;
  align-self: start;
  border-radius: var(--radius-s);
  background: var(--blue-soft);
  color: var(--blue);
  font-size: 19px;
}

.concept-hero-facts span {
  color: var(--ink);
  font-size: 13px;
  font-weight: var(--fw-body);
  line-height: 1.45;
  letter-spacing: 0;
  text-transform: none;
}

.concept-hero-facts strong {
  display: none;
}

/* Header scroll state: preserve its internal geometry and move the whole bar. */
.concept-page .site-header.concept-header,
.concept-page .site-header.concept-header.scrolled {
  min-height: 72px;
}

.concept-page .concept-brand-lockup {
  width: 176px;
  transition: none;
}

.concept-page .concept-nav {
  transform: none;
  opacity: 1;
}

.concept-page .site-header.concept-header.scrolled .concept-nav {
  will-change: auto;
}

@media (max-width: 960px) {
  /* The nav is a full-screen overlay below this width, not an inline row —
     sliding or fading it would fight the menu open/close animation. */
  .concept-page .concept-nav {
    transform: none;
    opacity: 1;
  }
}

/* ---------------------------------------------------------------------------
   Soft reveal (27 July 2026)
   ---------------------------------------------------------------------------
   Opacity + lift + defocus, the feel from the yellow reference. Kept as CSS
   transitions driven by a class, not a Motion timeline: the elements are
   revealed once and never animated again, so a library adds nothing here.
   `--reveal-delay` is written per element by app.js to stagger siblings.

   Deliberately separate from the anime.js scan reveal on [data-section-scan]:
   that one is a set-piece for the scan imagery, this is the quiet entrance for
   ordinary content blocks that currently have none.
   --------------------------------------------------------------------------- */
[data-reveal-soft] {
  opacity: 0;
  transform: translate3d(0, 34px, 0) scale(.994);
  filter: blur(10px);
  transition:
    opacity 720ms var(--concept-ease-out),
    transform 880ms var(--concept-ease-out),
    filter 880ms var(--concept-ease-out);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

[data-reveal-soft].is-revealed {
  opacity: 1;
  transform: none;
  filter: blur(0);
  will-change: auto;
}

/* No JS, no reveal — content must never be stuck invisible. */
html:not(.js) [data-reveal-soft] {
  opacity: 1;
  transform: none;
  filter: none;
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal-soft] {
    opacity: 1;
    transform: none;
    filter: none;
    transition: none;
  }
}