@media (min-width: 1536px) {
  :root {
    --gutter: 32px;
    --grid-gap: 32px;
    --section-space: 96px;
  }
}
@media (max-width: 1279px) {
  :root {
    --gutter: 24px;
    --grid-gap: 20px;
    --section-space: 64px;
  }
  .c-site-header__inner {
    grid-template-columns: 1fr auto;
  }
  .c-primary-nav,
  .c-site-header__proposal {
    display: none;
  }
  .c-menu-toggle {
    display: inline-grid;
  }
  .c-foundation-stage {
    padding-bottom: var(--space-20);
  }
}
@media (max-width: 1023px) {
  .grid {
    grid-template-columns: repeat(8, minmax(0, 1fr));
  }
  .col-span-12,
  .col-span-8,
  .col-span-7,
  .col-span-6,
  .col-span-5 {
    grid-column: span 8;
  }
  .col-span-4,
  .col-span-3 {
    grid-column: span 4;
  }
  .c-pre-footer-cta__grid {
    grid-template-columns: 1fr;
    align-items: start;
    gap: var(--space-8);
  }
  .c-pre-footer-cta__actions {
    justify-content: flex-start;
  }
  .c-site-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .c-site-footer__grid--no-contact {
    grid-template-columns: minmax(210px, 1fr) minmax(120px, 0.55fr) minmax(260px, 1.3fr);
  }
}
@media (max-width: 767px) {
  :root {
    --gutter: 20px;
    --grid-gap: 16px;
    --section-space: 48px;
    --header-height: 72px;
    --header-height-scrolled: 64px;
  }
  .grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  [class*=col-span-] {
    grid-column: span 4;
  }
  .c-site-header__brand {
    width: 72px;
    height: 54px;
  }
  .c-foundation-stage {
    min-height: 720px;
    padding-bottom: var(--space-16);
  }
  .c-foundation-stage__grid {
    background-size: 48px 48px;
  }
  .c-pre-footer-cta {
    padding-block: var(--space-12);
  }
  .c-pre-footer-cta__actions {
    display: grid;
    grid-template-columns: 1fr;
  }
  .c-pre-footer-cta__actions .c-button {
    width: 100%;
  }
  .c-site-footer__main {
    padding-block: var(--space-10);
  }
  .c-site-footer__grid,
  .c-site-footer__grid--no-contact {
    grid-template-columns: minmax(96px, 0.65fr) minmax(0, 1.35fr);
    gap: var(--space-8) var(--space-5);
  }
  .c-footer-brand {
    grid-column: 1/-1;
    display: grid;
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: start;
    column-gap: var(--space-4);
  }
  .c-footer-brand__logo {
    width: 96px;
    grid-row: 1/span 2;
  }
  .c-footer-brand__slogan {
    margin-top: var(--space-1);
  }
  .c-footer-brand__statement {
    max-width: 560px;
    margin-top: var(--space-2);
  }
  .c-footer-brand__cta {
    grid-column: 1/-1;
    justify-self: start;
    margin-top: var(--space-4);
  }
  .c-footer-services ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 var(--space-3);
  }
  .c-site-footer__bottom-inner {
    min-height: auto;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    padding-block: var(--space-4);
  }
}
@media (max-width: 479px) {
  :root {
    --gutter: 14px;
  }
  .c-site-header__brand {
    width: 68px;
    height: 52px;
  }
  .c-site-header__actions {
    gap: var(--space-2);
  }
  .c-mobile-drawer {
    width: 100%;
    padding-left: var(--space-4);
  }
  .c-mobile-drawer__brand {
    width: 72px;
    height: 58px;
  }
  .c-foundation-stage h1 {
    font-size: clamp(2.85rem, 16vw, 4.5rem);
  }
  .c-foundation-stage p:last-child {
    font-size: var(--font-base);
  }
  .c-eyebrow::before {
    width: 34px;
  }
  .c-footer-brand {
    grid-template-columns: 84px minmax(0, 1fr);
    column-gap: var(--space-3);
  }
  .c-footer-brand__logo {
    width: 84px;
  }
  .c-footer-brand__cta {
    width: 100%;
  }
  .c-site-footer__bottom ul {
    gap: var(--space-3);
  }
}
@media (max-width: 359px) {
  .c-site-footer__grid,
  .c-site-footer__grid--no-contact {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .c-footer-brand {
    grid-column: auto;
  }
  .c-footer-nav ul,
  .c-footer-services ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 var(--space-3);
  }
}
@media (max-height: 520px) and (orientation: landscape) {
  .c-mobile-drawer__header {
    position: sticky;
    z-index: 1;
    top: 0;
    background: var(--color-black);
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}
/* Sprint 2.1 responsive visual refinements. */
@media (min-width: 1536px) {
  .c-service-experience {
    min-height: 620px;
  }
}
@media (max-width: 1023px) {
  .c-home-section {
    padding-block: clamp(52px, 6vw, 64px);
  }
  .c-home-hero {
    min-height: clamp(660px, 82svh, 760px);
  }
  .c-home-intro__copy,
  .c-home-services__header,
  .c-featured-projects__header,
  .c-process-preview__header,
  .c-home-industries__header,
  .c-multi-scope__grid,
  .c-safety-quality__grid {
    gap: var(--space-6);
  }
  .c-service-cards {
    margin-top: var(--space-10);
  }
  .c-service-card__media {
    aspect-ratio: 16/9;
  }
  .c-service-card__content {
    gap: var(--space-2);
    padding: var(--space-5);
  }
  .c-service-card p {
    line-height: 1.5;
  }
  .c-project-card,
  .c-project-card--feature {
    min-height: 440px;
  }
  .c-multi-scope__visual,
  .c-multi-scope__visual > img {
    min-height: 500px;
  }
  .c-process-timeline {
    gap: var(--space-6) var(--grid-gap);
  }
  .c-process-timeline li {
    min-height: 220px;
    padding: 72px var(--space-4) var(--space-4);
  }
  .c-process-timeline li > span {
    top: var(--space-4);
    left: var(--space-4);
  }
  .c-safety-quality__media,
  .c-safety-quality__media img {
    min-height: 480px;
  }
  .c-contact-strip__inner {
    gap: var(--space-4);
    padding-block: var(--space-6);
  }
}
@media (max-width: 767px) {
  .c-site-header__brand {
    width: 76px;
    height: 60px;
  }
  .c-site-header__logo--gold {
    width: 140px;
    height: 140px;
  }
  .c-site-header__logo--dark {
    width: 76px;
    height: 60px;
  }
  .c-mobile-drawer__brand {
    width: 80px;
    height: 68px;
  }
  .c-mobile-drawer__brand img {
    width: 150px;
    height: 150px;
  }
  .c-home-hero {
    min-height: clamp(620px, 82svh, 720px);
  }
  .c-home-hero__inner {
    padding-top: calc(var(--header-height) + var(--space-10));
    padding-bottom: 82px;
  }
  .c-home-hero__title {
    font-size: clamp(3.05rem, 12.5vw, 5rem);
  }
  .c-home-hero__summary {
    max-width: 58ch;
    margin-top: var(--space-5);
    line-height: 1.5;
  }
  .c-home-hero__actions {
    margin-top: var(--space-5);
  }
  .c-capability-strip__item {
    min-height: 80px;
    padding: var(--space-3) var(--space-4);
  }
  .c-home-section {
    padding-block: clamp(40px, 10vw, 48px);
  }
  .c-home-intro__media {
    margin-top: var(--space-6);
  }
  .c-home-intro__media img {
    height: 340px;
  }
  .c-service-cards,
  .c-featured-projects__grid,
  .c-industry-grid {
    margin-top: var(--space-6);
  }
  .c-service-card__content,
  .c-project-card__content,
  .c-industry-card__content {
    padding: var(--space-4);
  }
  .c-project-card,
  .c-project-card--feature {
    min-height: 420px;
  }
  .c-multi-scope__visual,
  .c-multi-scope__visual > img {
    min-height: 440px;
  }
  .c-scope-sequence li {
    min-height: 58px;
  }
  .c-benefit-list li {
    min-height: 68px;
  }
  .c-process-timeline {
    gap: var(--space-4);
    margin-top: var(--space-6);
  }
  .c-process-timeline li {
    padding: 68px var(--space-4) var(--space-4);
  }
  .c-safety-quality__media,
  .c-safety-quality__media img {
    min-height: 380px;
  }
  .c-industry-card__media,
  .c-industry-card:last-child .c-industry-card__media {
    aspect-ratio: 16/10;
  }
  .route-home .c-pre-footer-cta {
    padding-block: var(--space-10);
  }
  .route-home .c-pre-footer-cta__grid {
    gap: var(--space-6);
  }
  .c-contact-strip__inner {
    padding-block: var(--space-6);
  }
}
@media (max-width: 479px) {
  .c-site-header__brand {
    width: 72px;
    height: 58px;
  }
  .c-site-header__logo--gold {
    width: 134px;
    height: 134px;
  }
  .c-site-header__logo--dark {
    width: 72px;
    height: 58px;
  }
  .c-mobile-drawer__brand img {
    width: 142px;
    height: 142px;
  }
  .c-home-hero {
    min-height: clamp(600px, 80svh, 680px);
  }
  .c-home-hero__inner {
    padding-top: calc(var(--header-height) + var(--space-8));
    padding-bottom: 72px;
  }
  .c-home-hero__eyebrow {
    margin-bottom: var(--space-4);
  }
  .c-home-hero__title {
    font-size: clamp(2.7rem, 13.5vw, 4.05rem);
  }
  .c-capability-strip__item {
    min-height: 78px;
    padding: var(--space-3);
  }
  .c-home-section {
    padding-block: var(--space-10);
  }
  .c-home-section-heading h2 {
    font-size: clamp(2rem, 9vw, 3.15rem);
  }
  .c-home-intro__media img {
    height: 300px;
  }
  .c-project-card,
  .c-project-card--feature {
    min-height: 390px;
  }
  .c-multi-scope__visual,
  .c-multi-scope__visual > img {
    min-height: 400px;
  }
  .c-safety-quality__media,
  .c-safety-quality__media img {
    min-height: 340px;
  }
  .c-contact-strip__inner {
    gap: var(--space-4);
  }
}
@media (max-width: 359px) {
  .c-site-footer__grid,
  .c-site-footer__grid--no-contact {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: var(--space-5) var(--space-4);
  }
  .c-footer-brand {
    grid-column: 1/-1;
  }
  .c-footer-services ul {
    grid-template-columns: 1fr;
    gap: 0;
  }
}
@media (max-width: 359px) {
  .c-site-footer__grid,
  .c-site-footer__grid--no-contact {
    grid-template-columns: 100px minmax(0, 1fr);
  }
  .c-footer-nav ul,
  .c-footer-services ul {
    grid-template-columns: 1fr;
  }
}

/* Sprint 2.2 responsive scale and proportion corrections. */
@media (max-width: 1279px) {
  .c-home-hero__title {
    font-size: clamp(3.35rem, 6.2vw, 5.2rem);
  }

  .c-service-experience {
    gap: var(--space-6);
  }
}

@media (max-width: 1023px) {
  .c-home-hero {
    height: auto;
    min-height: clamp(620px, 78svh, 720px);
    max-height: none;
  }

  .c-home-hero__inner {
    min-height: inherit;
    padding-top: calc(var(--header-height) + var(--space-10));
    padding-bottom: var(--space-16);
  }

  .c-home-section {
    padding-block: clamp(48px, 6vw, 60px);
  }

  .c-home-intro__copy,
  .c-home-services__header,
  .c-featured-projects__header,
  .c-process-preview__header,
  .c-home-industries__header,
  .c-multi-scope__grid,
  .c-safety-quality__grid {
    gap: var(--space-5);
  }

  .c-home-intro__media img {
    height: clamp(360px, 48vw, 460px);
  }

  .c-service-cards {
    gap: var(--space-4);
    margin-top: var(--space-8);
  }

  .c-service-card__content {
    gap: var(--space-2);
    padding: var(--space-5);
  }

  .c-project-card,
  .c-project-card--feature {
    min-height: 360px;
  }

  .c-project-card--feature {
    min-height: 400px;
  }

  .c-multi-scope__visual,
  .c-multi-scope__visual > img {
    min-height: 420px;
  }

  .c-process-timeline {
    gap: var(--space-4) var(--grid-gap);
    margin-top: var(--space-8);
  }

  .c-process-timeline li {
    min-height: 0;
    padding: 64px var(--space-4) var(--space-4);
  }

  .c-process-timeline li > span {
    top: var(--space-3);
    left: var(--space-3);
    width: 44px;
    height: 44px;
  }

  .c-process-timeline h3 {
    margin-top: 0;
  }

  .c-safety-quality__media,
  .c-safety-quality__media img {
    min-height: 420px;
  }

  .c-industry-card__media,
  .c-industry-card:last-child .c-industry-card__media {
    aspect-ratio: 16 / 9;
  }

  .route-home .c-pre-footer-cta {
    padding-block: var(--space-12);
  }

  .route-home .c-pre-footer-cta__grid {
    gap: var(--space-5);
  }

  .c-contact-strip__inner {
    min-height: 0;
    gap: var(--space-3);
    padding-block: var(--space-5);
  }
}

@media (max-width: 767px) {
  .c-home-hero {
    min-height: clamp(580px, 76svh, 660px);
  }

  .c-home-hero__inner {
    padding-top: calc(var(--header-height) + var(--space-8));
    padding-bottom: var(--space-14);
  }

  .c-home-hero__eyebrow {
    margin-bottom: var(--space-3);
  }

  .c-home-hero__title {
    max-width: 12ch;
    font-size: clamp(2.75rem, 11.7vw, 4.25rem);
    line-height: .96;
  }

  .c-home-hero__summary {
    max-width: 52ch;
    margin-top: var(--space-4);
    line-height: 1.48;
  }

  .c-home-hero__actions {
    margin-top: var(--space-5);
  }

  .c-capability-strip__item {
    min-height: 72px;
    padding: var(--space-3);
  }

  .c-home-section {
    padding-block: clamp(40px, 10vw, 48px);
  }

  .c-home-section-heading h2 {
    font-size: clamp(2rem, 8.5vw, 3.25rem);
  }

  .c-home-intro__media {
    margin-top: var(--space-5);
  }

  .c-home-intro__media img {
    height: clamp(270px, 72vw, 320px);
  }

  .c-service-cards,
  .c-featured-projects__grid,
  .c-industry-grid {
    gap: var(--space-4);
    margin-top: var(--space-5);
  }

  .c-service-card__media {
    aspect-ratio: 16 / 8.5;
  }

  .c-service-card__content,
  .c-project-card__content,
  .c-industry-card__content {
    padding: var(--space-4);
  }

  .c-service-card h3 {
    font-size: clamp(1.25rem, 6vw, 1.65rem);
  }

  .c-project-card,
  .c-project-card--feature {
    min-height: 330px;
  }

  .c-project-card--feature {
    min-height: 360px;
  }

  .c-project-card h3,
  .c-project-card:not(.c-project-card--feature) h3 {
    font-size: clamp(1.4rem, 6.5vw, 2rem);
  }

  .c-multi-scope__visual,
  .c-multi-scope__visual > img {
    min-height: 340px;
  }

  .c-scope-sequence li {
    min-height: 50px;
  }

  .c-benefit-list li {
    min-height: 56px;
  }

  .c-process-timeline {
    gap: var(--space-3);
    margin-top: var(--space-5);
  }

  .c-process-timeline li {
    padding: 60px var(--space-4) var(--space-4);
  }

  .c-safety-quality__media,
  .c-safety-quality__media img {
    min-height: 300px;
  }

  .c-safety-quality__pillars article {
    padding-block: var(--space-3);
  }

  .c-industry-card__media,
  .c-industry-card:last-child .c-industry-card__media {
    aspect-ratio: 16 / 9;
  }

  .route-home .c-pre-footer-cta {
    padding-block: var(--space-10);
  }

  .route-home .c-pre-footer-cta__grid {
    gap: var(--space-4);
  }

  .c-contact-strip__inner {
    padding-block: var(--space-5);
  }
}

@media (max-width: 479px) {
  .c-home-hero {
    min-height: clamp(570px, 75svh, 620px);
  }

  .c-home-hero__inner {
    padding-top: calc(var(--header-height) + var(--space-6));
    padding-bottom: var(--space-10);
  }

  .c-home-hero__title {
    max-width: 11ch;
    font-size: clamp(2.55rem, 12.7vw, 3.65rem);
  }

  .c-home-hero__scroll {
    display: none;
  }

  .c-capability-strip__item {
    min-height: 70px;
    padding: var(--space-3);
  }

  .c-home-section {
    padding-block: clamp(36px, 10vw, 42px);
  }

  .c-home-intro__media img {
    height: 260px;
  }

  .c-project-card,
  .c-project-card--feature {
    min-height: 300px;
  }

  .c-project-card--feature {
    min-height: 330px;
  }

  .c-multi-scope__visual,
  .c-multi-scope__visual > img {
    min-height: 320px;
  }

  .c-safety-quality__media,
  .c-safety-quality__media img {
    min-height: 280px;
  }

  .c-contact-strip h2 {
    font-size: clamp(1.25rem, 6.4vw, 1.65rem);
  }
}

@media (max-width: 359px) {
  .c-home-hero {
    min-height: 570px;
  }

  .c-home-hero__title {
    font-size: 2.42rem;
  }
}

@media (max-height: 720px) and (min-width: 768px) {
  .c-home-hero {
    height: clamp(620px, calc(100svh - 48px), 680px);
  }

  .c-home-hero__inner {
    padding-top: calc(var(--header-height) + var(--space-5));
    padding-bottom: var(--space-12);
  }

  .c-home-hero__service-line {
    display: none;
  }
}

@media (max-width: 1023px) {
  .c-multi-scope__visual,
  .c-safety-quality__media {
    height: 420px;
    min-height: 0;
  }

  .c-multi-scope__visual > img,
  .c-safety-quality__media img {
    min-height: 0;
  }
}

@media (max-width: 767px) {
  .c-multi-scope__visual,
  .c-safety-quality__media {
    height: 340px;
  }
}

@media (max-width: 479px) {
  .c-multi-scope__visual,
  .c-safety-quality__media {
    height: 300px;
  }
}