@media (max-width: 1100px) {
    .card-grid,
    .why-grid,
    .team-grid,
    .home-service-grid,
    .quality-grid,
    .home-project-grid,
    .home-client-grid,
    .about-service-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .metric-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 1px;
        background: rgba(219, 228, 239, .24);
    }

    .about-stat-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .about-stat-strip article:nth-child(2) {
        border-right: 0;
    }

    .about-stat-strip article:nth-child(-n + 2) {
        border-bottom: 1px solid var(--line);
    }

    .metric {
        grid-template-columns: 64px minmax(0, 1fr);
        padding: 28px;
        border-right: 0;
        background: var(--black);
    }

    .quality-card,
    .quality-card-wide {
        grid-column: span 1;
    }

    .quality-card-wide:first-child {
        grid-column: span 2;
    }

    .process-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .process-grid::before {
        display: none;
    }
}

@media (max-width: 980px) {
    :root {
        --header-height: 104px;
    }

    .site-header {
        grid-template-columns: auto auto;
        min-height: var(--header-height);
        padding: 10px 16px;
    }

    .brand {
        min-width: 0;
    }

    .brand img {
        height: clamp(72px, 12vw, 86px);
        max-width: min(108px, 24vw);
    }

    .brand-name {
        max-width: min(300px, calc(100vw - 196px));
        font-size: clamp(.95rem, 3.2vw, 1.2rem);
    }

    .header-cta {
        display: none;
    }

    .nav-toggle {
        position: relative;
        z-index: 71;
        display: grid;
        place-items: center;
        justify-self: end;
        width: 52px;
        height: 52px;
        border-radius: var(--radius-md);
        background: var(--paper);
    }

    .nav-toggle span {
        grid-area: 1 / 1;
        margin: 0;
        transition: transform 160ms ease, opacity 160ms ease;
    }

    .nav-toggle span:nth-child(1) {
        transform: translateY(-8px);
    }

    .nav-toggle span:nth-child(3) {
        transform: translateY(8px);
    }

    .site-nav {
        position: fixed;
        z-index: 70;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        display: grid;
        align-content: start;
        gap: 10px;
        width: 100vw;
        max-width: none;
        padding: 18px 16px 28px;
        color: var(--ink);
        background: var(--paper);
        border-top: 1px solid var(--line);
        border-radius: 0;
        box-shadow: 0 24px 48px rgba(7, 17, 31, .16);
        opacity: 0;
        pointer-events: none;
        overflow-y: auto;
        transform: translateY(-12px);
        transition: opacity 180ms ease, transform 180ms ease;
    }

    .site-nav.is-open {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }

    .site-nav a {
        display: flex;
        align-items: center;
        min-height: 58px;
        margin: 0;
        padding: 16px 18px;
        border: 1px solid var(--line);
        border-radius: var(--radius-sm);
        background: #ffffff;
        font-size: 1.05rem;
        font-weight: 800;
    }

    .site-nav a.is-active {
        color: #ffffff;
        border-color: var(--blue);
        background: var(--blue);
    }

    .nav-toggle[aria-expanded="true"] span:nth-child(1) {
        transform: rotate(45deg);
    }

    .nav-toggle[aria-expanded="true"] span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle[aria-expanded="true"] span:nth-child(3) {
        transform: rotate(-45deg);
    }

    .split,
    .about-showcase,
    .mission-vision-grid,
    .about-ops-grid,
    .service-showcase,
    .career-layout,
    .hero-stage,
    .home-intro-grid,
    .why-layout,
    .quality-head,
    .home-showcase-head,
    .clients-table-head,
    .gallery-page-head,
    .contact-grid,
    .footer-grid,
    .map-grid {
        grid-template-columns: 1fr;
    }

    .client-table article {
        grid-template-columns: 1fr 1fr;
    }

    .about-media-board {
        display: grid;
        gap: 16px;
        padding: 0;
    }

    .about-media-side,
    .about-media-note {
        position: static;
        width: auto;
    }

    .about-media-note {
        box-shadow: none;
    }

    .service-overview-panel {
        position: static;
    }

    .career-intro {
        position: static;
    }

    .service-detail {
        grid-template-columns: 128px minmax(0, 1fr);
    }

    .service-feature-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 520px) {
    :root {
        --header-height: 92px;
    }

    .site-header {
        padding-block: 8px;
    }

    .brand img {
        height: clamp(64px, 17vw, 76px);
    }

    .brand-name {
        max-width: calc(100vw - 182px);
        font-size: .95rem;
    }
}

@media (max-width: 720px) {
    .hero-slider {
        min-height: auto;
    }

    .hero-slide {
        position: relative;
        display: none;
        min-height: auto;
        padding: 72px 0 54px;
    }

    .hero-slide.is-active {
        display: block;
    }

    .hero-panel h1,
    .page-hero h1 {
        font-size: clamp(2.3rem, 14vw, 3.6rem);
    }

    .hero-stage {
        min-height: auto;
    }

    .hero-panel p:not(.eyebrow) {
        font-size: 1rem;
    }

    .hero-service-strip {
        overflow: hidden;
    }

    .hero-service-track {
        display: flex;
        width: max-content;
        gap: 10px;
        animation: hero-service-marquee 18s linear infinite;
    }

    .hero-service-track .is-marquee-copy {
        display: flex;
    }

    .hero-service-track a {
        flex: 0 0 260px;
        min-height: 56px;
    }

    .hero-service-track:hover {
        animation-play-state: paused;
    }

    .slider-controls {
        top: auto;
        right: auto;
        left: 16px;
        bottom: 18px;
        display: flex;
        gap: 10px;
        transform: none;
    }

    .slider-controls button {
        width: 38px;
        height: 6px;
    }

    .hero-actions,
    .btn {
        width: 100%;
    }

    .timeline-card,
    .metric-grid,
    .card-grid,
    .why-grid,
    .process-grid,
    .home-service-grid,
    .check-list,
    .gallery-grid,
    .team-grid,
    .why-section .why-grid,
    .quality-grid,
    .home-project-grid,
    .home-client-grid,
    .about-step-stack,
    .about-service-grid {
        grid-template-columns: 1fr;
    }

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

    .image-lightbox {
        grid-template-columns: 48px minmax(0, 1fr) 48px;
        gap: 8px;
        padding: 18px;
    }

    .lightbox-nav {
        width: 44px;
        height: 44px;
    }

    .quality-card a {
        width: 100%;
    }

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

    .quality-card,
    .quality-card-wide,
    .quality-card-wide:first-child {
        grid-column: 1 / -1;
    }

    .service-detail {
        grid-template-columns: 1fr;
    }

    .service-detail-rail {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px;
    }

    .service-detail-rail .icon-box {
        width: 58px;
        height: 58px;
    }

    .service-number {
        width: 48px;
        height: 48px;
    }

    .service-overview-stats {
        grid-template-columns: 1fr;
    }

    .service-detail-main {
        padding: 22px;
    }

    .service-detail-head {
        grid-template-columns: 1fr;
    }

    .service-detail-head a {
        width: 100%;
    }

    .career-meta-grid,
    .career-apply {
        grid-template-columns: 1fr;
    }

    .career-role-card {
        grid-template-columns: 1fr;
    }

    .career-role-card > strong {
        grid-column: auto;
    }

    .about-media-main img,
    .about-media-side img {
        aspect-ratio: 4 / 3;
    }

    .about-stat-strip {
        grid-template-columns: 1fr;
    }

    .about-stat-strip article,
    .about-stat-strip article:nth-child(2) {
        border-right: 0;
    }

    .about-stat-strip article {
        border-bottom: 1px solid var(--line);
    }

    .about-stat-strip article:last-child {
        border-bottom: 0;
    }

    .mission-panel,
    .vision-panel {
        min-height: auto;
    }

    .mission-panel ul {
        grid-template-columns: 1fr;
    }

    .about-ops-copy {
        position: static;
    }

    .about-ops-proof {
        grid-template-columns: 1fr;
    }

    .about-step-stack {
        padding-left: 0;
    }

    .about-step-stack::before {
        display: none;
    }

    .about-step {
        min-height: auto;
    }

    .about-step > strong {
        width: 46px;
        height: 46px;
        font-size: 1rem;
    }

    .about-step > span {
        width: 46px;
        height: 46px;
    }

    .metric {
        grid-template-columns: 54px minmax(0, 1fr);
        gap: 18px;
        padding: 22px 10px;
    }

    .metric-icon {
        width: 54px;
        height: 54px;
    }

    .metric-icon i {
        font-size: 3rem;
    }

    .timeline-card div {
        min-height: auto;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .footprint-media,
    .footprint-media img {
        min-height: 620px;
    }

    .footprint-copy {
        left: 22px;
        right: 22px;
        bottom: 130px;
    }

    .timeline-card {
        width: calc(100% - 32px);
        margin-top: -72px;
    }

    .timeline-card div:first-child {
        padding-left: clamp(24px, 7vw, 36px);
    }

    .timeline-card div:last-child {
        border-bottom: 0;
    }

    .client-table article {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .page-hero {
        padding-top: 124px;
    }
}

@media (max-width: 520px) {
    .hero-slide {
        padding: 54px 0 46px;
    }

    .hero-proof-row span {
        width: 100%;
    }

    .home-intro-copy h2 {
        font-size: clamp(2rem, 11vw, 3rem);
    }

    .home-intro-media,
    .home-intro-media img {
        min-height: 340px;
    }

    .home-intro-badge {
        left: 16px;
        right: 16px;
        bottom: 16px;
    }

    .home-service-card {
        grid-template-rows: 190px 1fr;
    }

    .quality-flow {
        grid-template-columns: 1fr;
    }

    .home-showcase-head a {
        width: 100%;
    }

    .home-project-card,
    .home-project-card img {
        min-height: 260px;
    }

    .service-overview-panel {
        padding: 22px;
    }

    .service-overview-stats article {
        min-height: auto;
    }

    .service-detail-rail {
        padding: 14px;
    }

    .service-detail-head h2 {
        font-size: 1.55rem;
    }

    .service-feature-list li {
        min-height: auto;
    }

    .gallery-lightbox-grid {
        grid-template-columns: 1fr;
    }

    .image-lightbox {
        grid-template-columns: 1fr;
    }

    .lightbox-nav {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
    }

    .lightbox-prev {
        left: 14px;
    }

    .lightbox-next {
        right: 14px;
    }
}