@layer reset, base, components, utilities;

@layer reset {
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body { margin: 0; }
    img, svg { display: block; max-width: 100%; }
    button, input, textarea { font: inherit; }
    h1, h2, h3, p, ul, ol, blockquote { margin-top: 0; }
}

@layer base {
    :root {
        --ink: #252b35;
        --ink-soft: #525a68;
        --ink-faint: #737b87;
        --paper: #fffdfa;
        --paper-warm: #f5f0e8;
        --line: #ddd8cf;
        --orange: #f5661b;
        --orange-dark: #ae3509;
        --orange-action: #cc4d0a;
        --orange-soft: #fff0e5;
        --cream: #fff8ef;
        --green: #1f7254;
        --radius-sm: .55rem;
        --radius: 1rem;
        --radius-lg: 1.6rem;
        --shadow: 0 24px 70px rgba(37, 43, 53, .11);
        --container: 76rem;
        --section: clamp(4.75rem, 9vw, 8.5rem);
        --focus: 0 0 0 3px #fff, 0 0 0 6px #e65313;
    }

    body {
        color: var(--ink);
        background: var(--paper);
        font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
        font-size: 1rem;
        line-height: 1.65;
        text-rendering: optimizeLegibility;
        -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3 { color: var(--ink); font-weight: 700; letter-spacing: -.035em; line-height: 1.08; text-wrap: balance; }
    h1:focus { outline: none; box-shadow: none; }
    h1 { font-size: clamp(3.2rem, 7.5vw, 6.9rem); max-width: 13ch; }
    h2 { font-size: clamp(2.25rem, 4.7vw, 4.25rem); max-width: 16ch; }
    h3 { font-size: clamp(1.25rem, 2vw, 1.6rem); }
    a { color: inherit; }
    a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible { outline: none; box-shadow: var(--focus); }
    ::selection { background: #ffc8a7; color: var(--ink); }
    main:focus { outline: none; }
}

@layer components {
    .container { width: min(calc(100% - 2.25rem), var(--container)); margin-inline: auto; }
    .section { padding-block: var(--section); }
    .section-warm { background: var(--paper-warm); }
    .section-dark { color: #fff; background: var(--ink); }
    .section-dark h2, .section-dark h3, .section-dark .section-intro { color: #fff; }
    .section-dark p { color: #d6d9de; }
    .section-dark .eyebrow { color: #ff9454; }

    .skip-link { position: fixed; z-index: 1000; top: 1rem; left: 1rem; padding: .75rem 1rem; color: #fff; background: var(--ink); border-radius: var(--radius-sm); transform: translateY(-200%); }
    .skip-link:focus { transform: none; }

    .site-header { position: sticky; z-index: 50; top: 0; height: 5.5rem; background: color-mix(in srgb, var(--paper) 92%, transparent); border-bottom: 1px solid rgba(37, 43, 53, .09); backdrop-filter: blur(18px); }
    .header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
    .brand { display: inline-flex; align-items: center; gap: .8rem; font-weight: 750; font-size: 1.2rem; letter-spacing: -.025em; text-decoration: none; }
    .brand img { border-radius: .55rem; }
    .desktop-nav { display: flex; align-items: center; gap: clamp(.7rem, 1.5vw, 1.45rem); }
    .desktop-nav > a:not(.button) { color: var(--ink-soft); font-size: .92rem; font-weight: 620; text-decoration: none; white-space: nowrap; }
    .desktop-nav > a:not(.button):hover, .desktop-nav > a:not(.button).active { color: var(--ink); }
    .desktop-nav > a.active { text-decoration: underline; text-decoration-color: var(--orange); text-underline-offset: .5rem; text-decoration-thickness: 2px; }
    .mobile-menu { display: none; }

    .button { min-height: 3.25rem; display: inline-flex; align-items: center; justify-content: center; padding: .8rem 1.35rem; color: #fff; background: var(--orange-action); border: 2px solid var(--orange-action); border-radius: .65rem; font-weight: 720; line-height: 1.2; text-align: center; text-decoration: none; cursor: pointer; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
    .button:hover { color: #fff; background: var(--ink); border-color: var(--ink); transform: translateY(-2px); }
    .button-secondary { color: var(--ink); background: transparent; border-color: #a7a9ad; }
    .button-secondary:hover { color: #fff; background: var(--ink); border-color: var(--ink); }
    .button-small { min-height: 2.75rem; padding: .6rem 1rem; font-size: .9rem; }
    .button-light { color: var(--ink); background: #fff; border-color: #fff; white-space: nowrap; }
    .button-light:hover { color: #fff; background: var(--ink); border-color: var(--ink); }
    .button-full { width: 100%; }
    .button-row { display: flex; flex-wrap: wrap; gap: .85rem; margin-top: 2.1rem; }
    .text-link { display: inline-flex; gap: .45rem; align-items: center; color: var(--ink); font-weight: 720; text-decoration-thickness: 1px; text-underline-offset: .3rem; }
    .text-link:hover span { transform: translateX(.25rem); }
    .text-link span { transition: transform .2s ease; }
    .text-link-light { color: #fff; }

    .eyebrow { margin-bottom: 1rem; color: var(--orange-dark); font-size: .78rem; font-weight: 800; letter-spacing: .14em; line-height: 1.2; text-transform: uppercase; }
    .section-header { margin-bottom: clamp(2.5rem, 5vw, 4.6rem); }
    .section-header h2 { margin-bottom: 1.3rem; }
    .section-intro { max-width: 46rem; margin-bottom: 0; color: var(--ink-soft); font-size: clamp(1.08rem, 2vw, 1.28rem); }
    .section-header-centred { max-width: 54rem; margin-inline: auto; text-align: center; }
    .section-header-centred h2, .section-header-centred .section-intro { margin-inline: auto; }
    .section-heading-row { display: flex; align-items: end; justify-content: space-between; gap: 2rem; margin-bottom: 3.5rem; }
    .section-heading-row .section-header { margin: 0; }

    .page-hero { position: relative; overflow: hidden; min-height: calc(100svh - 5.5rem); display: grid; align-items: center; padding-block: clamp(4rem, 9vw, 7.5rem); background: radial-gradient(circle at 95% 10%, #ffe6d6, transparent 32%), var(--paper); }
    .page-hero::after { content: ""; position: absolute; right: -10rem; bottom: -14rem; width: 36rem; height: 36rem; border: 1px solid rgba(245, 102, 27, .2); border-radius: 50%; pointer-events: none; }
    .page-hero-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(18rem, .75fr); align-items: center; gap: clamp(3rem, 7vw, 7rem); }
    .page-hero h1 { margin-bottom: 1.5rem; }
    .page-hero-no-signal { min-height: auto; padding-block: clamp(4rem, 7vw, 6rem); }
    .page-hero-no-signal .page-hero-grid { grid-template-columns: minmax(0, 1fr); }
    .page-hero-no-signal .page-hero-grid > div { max-width: 68rem; }
    .page-hero-no-signal h1 { max-width: 16ch; font-size: clamp(3.2rem, 6vw, 5.75rem); }
    .page-hero-no-signal .hero-subhead { max-width: 44rem; }
    .hero-subhead { max-width: 36rem; margin-bottom: 1.1rem; color: var(--ink); font-size: clamp(1.55rem, 3vw, 2.25rem); font-weight: 570; letter-spacing: -.025em; line-height: 1.28; }
    .hero-body { max-width: 40rem; margin: 0; color: var(--ink-soft); font-size: 1.08rem; }
    .page-hero-dark { color: #fff; background: radial-gradient(circle at 87% 18%, #3c4553, transparent 34%), var(--ink); }
    .page-hero-dark h1, .page-hero-dark .hero-subhead { color: #fff; }
    .page-hero-dark .eyebrow { color: #ff9454; }
    .page-hero-dark .hero-body { color: #d6dae0; }
    .page-hero-dark .button:not(.button-secondary), .tier-card-featured .button { color: #fff; background: var(--orange-action); border-color: var(--orange-action); }
    .page-hero-dark .button:not(.button-secondary):hover, .tier-card-featured .button:hover { color: #fff; background: var(--ink); border-color: #fff; }
    .page-hero-dark .button-secondary { color: #fff; border-color: #8d949e; }
    .page-hero-dark .button-secondary:hover { color: var(--ink); background: #fff; border-color: #fff; }

    .hero-signal { position: relative; aspect-ratio: 1; display: grid; place-items: center; border-radius: 50%; }
    .signal-orbit { position: absolute; border: 1px solid rgba(245, 102, 27, .37); border-radius: 50%; }
    .signal-orbit-one { inset: 9%; }
    .signal-orbit-two { inset: 26%; border-style: dashed; }
    .signal-core { z-index: 2; padding: 1.1rem; background: #fff; border-radius: 1.65rem; box-shadow: var(--shadow); transform: rotate(-4deg); }
    .signal-core img { border-radius: 1rem; }
    .signal-label { position: absolute; z-index: 3; padding: .6rem .9rem; color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 10rem; font-size: .8rem; font-weight: 750; box-shadow: 0 10px 30px rgba(37,43,53,.1); }
    .signal-label-one { top: 12%; left: 5%; }
    .signal-label-two { right: 0; top: 47%; }
    .signal-label-three { bottom: 9%; left: 18%; }

    .problem-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
    .problem-grid article { min-height: 20rem; display: flex; flex-direction: column; padding: 1.8rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .problem-grid span { color: var(--orange-dark); font-size: .8rem; font-weight: 800; }
    .problem-grid h3 { margin-top: auto; margin-bottom: 1rem; }
    .problem-grid p { margin-bottom: 0; color: var(--ink-soft); }

    .split-feature { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(3rem, 9vw, 9rem); }
    .split-feature h2 { margin-bottom: 0; }
    .large-copy { max-width: 44rem; font-size: clamp(1.15rem, 2vw, 1.42rem); }
    .large-copy p { margin-bottom: 1.5rem; }
    .highlight-line { padding-left: 1.25rem; color: #fff !important; border-left: 3px solid var(--orange); font-weight: 650; }

    .tier-grid { display: grid; grid-template-columns: repeat(3, 1fr); align-items: stretch; gap: 1.2rem; }
    .tier-card { position: relative; display: flex; flex-direction: column; padding: clamp(1.6rem, 3vw, 2.4rem); background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); }
    .tier-card h3 { margin: 0 0 1rem; font-size: 2rem; }
    .tier-kicker { margin: 0 0 .6rem; color: var(--orange-dark); font-size: .76rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
    .tier-lead { min-height: 5rem; color: var(--ink-soft); font-size: 1.12rem; }
    .tier-card .text-link, .tier-card .button { margin-top: auto; }
    .tier-card-featured { color: #fff; background: var(--ink); border-color: var(--ink); box-shadow: var(--shadow); transform: translateY(-.85rem); }
    .tier-card-featured h3, .tier-card-featured .tier-lead { color: #fff; }
    .tier-card-featured .tier-kicker { color: #ff9759; }
    .tier-badge { position: absolute; top: -1rem; right: 1.5rem; padding: .45rem .75rem; color: #fff; background: var(--orange-dark); border-radius: 10rem; font-size: .72rem; font-weight: 800; letter-spacing: .04em; }
    .check-list { display: grid; gap: .8rem; margin: 1.5rem 0 2rem; padding: 0; list-style: none; }
    .check-list li { position: relative; padding-left: 1.55rem; }
    .check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--orange); font-weight: 800; }
    .pricing-note { max-width: 42rem; margin: 2rem auto 0; color: var(--ink-soft); text-align: center; }

    .process-grid { display: grid; grid-template-columns: repeat(5, 1fr); margin: 0; padding: 0; list-style: none; }
    .process-grid li { position: relative; padding: 1.6rem 1.3rem 1.6rem 0; border-top: 2px solid var(--ink); }
    .process-grid li:not(:last-child)::after { content: ""; position: absolute; z-index: 2; top: -5px; right: 0; width: 8px; height: 8px; background: var(--orange); border-radius: 50%; }
    .process-number { display: block; margin-bottom: 3rem; color: var(--orange-dark); font-size: .76rem; font-weight: 800; }
    .process-grid h3 { margin-bottom: .8rem; }
    .process-grid p { margin: 0; color: var(--ink-soft); font-size: .94rem; }
    .cycle-note { display: flex; align-items: center; justify-content: center; gap: .7rem; margin: 3rem 0 0; color: var(--ink-soft); font-weight: 650; text-align: center; }
    .cycle-note span { color: var(--orange); font-size: 1.7rem; }
    .cycle-panel { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: .75rem; margin-top: 3rem; padding: 1.2rem; background: var(--paper-warm); border-radius: var(--radius); }
    .cycle-panel strong { width: 100%; text-align: center; }
    .cycle-panel span { padding: .4rem .65rem; background: #fff; border-radius: .4rem; font-weight: 700; }
    .cycle-panel i { color: var(--orange-dark); font-style: normal; }

    .capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.15rem; }
    .capability-card { min-height: 19rem; display: flex; flex-direction: column; padding: 1.8rem; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); transition: border-color .2s, transform .2s; }
    .capability-card:hover { border-color: #b5aea2; transform: translateY(-3px); }
    .card-number { margin-bottom: auto; color: var(--orange-dark); font-size: .78rem; font-weight: 800; }
    .capability-card h3 { margin: 3.5rem 0 .75rem; }
    .capability-card p { color: var(--ink-soft); }
    .capability-card .text-link { margin-top: auto; font-size: .9rem; }

    .proof-section { background: #f8f7f4; }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
    .case-card { min-height: 22rem; display: flex; flex-direction: column; padding: 2rem; background: #fff; border-radius: var(--radius); border-bottom: 4px solid transparent; }
    .case-card:hover { border-bottom-color: var(--orange); }
    .case-sector { margin-bottom: 3rem; color: var(--orange-dark); font-size: .78rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
    .case-card h3 { margin-bottom: 1rem; }
    .case-card > p:not(.case-sector) { color: var(--ink-soft); }
    .case-outcome { margin-top: auto; padding-top: 1.25rem; border-top: 1px solid var(--line); }
    .case-outcome strong { display: block; color: var(--ink); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; }
    .centred-action { margin-top: 2.5rem; text-align: center; }

    .trust-list { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
    .trust-list li { display: grid; grid-template-columns: 3rem 1fr; gap: 1.2rem; padding: 1.5rem 0; border-bottom: 1px solid var(--line); }
    .trust-list span { color: var(--orange-dark); font-size: .8rem; font-weight: 800; }
    .trust-list h3 { margin-bottom: .4rem; }
    .trust-list p { margin: 0; color: var(--ink-soft); }

    .principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: #555c66; border: 1px solid #555c66; }
    .principle-grid article { min-height: 14rem; padding: 1.8rem; background: var(--ink); }
    .principle-grid span { display: block; margin-bottom: 3rem; color: #ff9454; font-size: .78rem; font-weight: 800; }
    .principle-grid h3 { color: #fff; }
    .principle-grid p { margin: 0; color: #d6d9de; }

    .faq-layout { display: grid; grid-template-columns: .65fr 1.35fr; gap: clamp(3rem, 8vw, 8rem); }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-list details { border-bottom: 1px solid var(--line); }
    .faq-list summary { position: relative; padding: 1.4rem 3rem 1.4rem 0; font-size: 1.12rem; font-weight: 700; cursor: pointer; list-style: none; }
    .faq-list summary::-webkit-details-marker { display: none; }
    .faq-list summary::after { content: "+"; position: absolute; right: .4rem; color: var(--orange-dark); font-size: 1.5rem; font-weight: 400; }
    .faq-list details[open] summary::after { content: "−"; }
    .faq-list details p { max-width: 42rem; padding-right: 2rem; color: var(--ink-soft); }

    .services-list { padding-top: 0; }
    .service-row { display: grid; grid-template-columns: 4rem 1fr 1fr; gap: clamp(2rem, 5vw, 5rem); padding-block: clamp(3.5rem, 7vw, 6rem); border-top: 1px solid var(--line); scroll-margin-top: 6rem; }
    .service-index { color: var(--orange-dark); font-size: .8rem; font-weight: 800; }
    .service-row h2 { font-size: clamp(2rem, 3.5vw, 3.3rem); }
    .service-row > div:last-child > p { color: var(--ink-soft); font-size: 1.12rem; }
    .service-row ul { padding-left: 1.1rem; }
    .service-row li { margin-bottom: .5rem; padding-left: .25rem; }

    .case-study-list { padding-top: 0; }
    .case-study { padding-block: var(--section); border-top: 1px solid var(--line); scroll-margin-top: 6rem; }
    .case-study header { display: grid; grid-template-columns: .6fr 1.4fr; gap: 3rem; margin-bottom: 4rem; }
    .case-study header h2 { font-size: clamp(2.2rem, 4vw, 3.8rem); }
    .case-story-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
    .case-story-grid > div { min-height: 15rem; padding: 1.5rem; background: #fff; }
    .case-story-grid h3 { font-size: 1rem; letter-spacing: 0; }
    .case-story-grid p { margin: 0; color: var(--ink-soft); }
    .case-story-grid .case-outcome-panel { grid-column: 1 / -1; min-height: auto; display: grid; grid-template-columns: 1fr 3fr; gap: 2rem; color: #fff; background: var(--ink); }
    .case-outcome-panel h3, .case-outcome-panel p { color: #fff; }

    .about-statement { max-width: 66rem; }
    .about-statement blockquote { margin: 0; color: var(--ink); font-size: clamp(2.1rem, 5vw, 4.7rem); font-weight: 680; letter-spacing: -.04em; line-height: 1.14; }

    .cta-section { padding: 1.25rem; background: var(--paper); }
    .cta-panel { width: min(100%, 92rem); display: flex; align-items: end; justify-content: space-between; gap: 3rem; padding: clamp(2.5rem, 6vw, 5.5rem); color: #fff; background: #c2410c; border-radius: var(--radius-lg); }
    .cta-panel .eyebrow { color: #ffe7d8; }
    .cta-panel h2 { color: #fff; }
    .cta-panel p { max-width: 48rem; margin: 0; font-size: 1.1rem; }

    .contact-hero { padding-block: clamp(3.5rem, 7vw, 7rem); background: linear-gradient(120deg, var(--ink) 0 49%, var(--paper-warm) 49%); }
    .contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; align-items: start; gap: clamp(3rem, 8vw, 8rem); }
    .contact-copy { position: sticky; top: 8rem; color: #fff; }
    .contact-copy > .eyebrow { color: #ff9454; }
    .contact-copy h1 { color: #fff; font-size: clamp(2.8rem, 5vw, 5rem); }
    .contact-copy .hero-subhead { color: #e1e3e6; font-size: clamp(1.2rem, 2vw, 1.55rem); }
    .discovery-expectations { margin-top: 4rem; }
    .discovery-expectations h2 { color: #fff; font-size: 1rem; letter-spacing: .02em; }
    .discovery-expectations ol { margin: 0; padding: 0; border-top: 1px solid #515864; list-style: none; }
    .discovery-expectations li { display: grid; grid-template-columns: 2.5rem 1fr; gap: 1rem; padding-block: 1rem; border-bottom: 1px solid #515864; }
    .discovery-expectations span { color: #ff9454; font-size: .76rem; font-weight: 800; }
    .form-card { padding: clamp(1.6rem, 4vw, 3.25rem); background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow); }
    .form-card > h2 { font-size: 2rem; }
    .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
    .field { margin-bottom: 1.25rem; }
    .field label { display: block; margin-bottom: .35rem; font-weight: 720; }
    .optional { color: var(--ink-faint); font-size: .78rem; font-weight: 500; }
    .field-hint { margin: -.2rem 0 .45rem; color: var(--ink-soft); font-size: .88rem; }
    .field input, .field textarea { width: 100%; padding: .75rem .85rem; color: var(--ink); background: #fff; border: 1px solid #9ca0a7; border-radius: var(--radius-sm); }
    .field textarea { resize: vertical; }
    .field input:focus, .field textarea:focus { border-color: var(--orange-dark); }
    .validation-message { display: block; margin-top: .3rem; color: #a42117; font-size: .85rem; font-weight: 620; }
    .validation-summary { margin-bottom: 1rem; padding: .8rem 1rem; color: #7d1812; background: #fff0ef; border-left: 4px solid #b42a20; border-radius: .3rem; }
    .validation-summary ul { margin: 0; padding-left: 1.2rem; }
    .form-error { margin-bottom: 1rem; padding: .8rem 1rem; color: #7d1812; background: #fff0ef; border-left: 4px solid #b42a20; }
    .form-privacy { margin: 1rem 0 0; color: var(--ink-faint); font-size: .8rem; text-align: center; }
    .honeypot { position: absolute !important; width: 1px !important; height: 1px !important; overflow: hidden !important; clip: rect(1px,1px,1px,1px) !important; }
    .form-success { padding-block: 4rem; text-align: center; }
    .form-success h2 { margin-inline: auto; }
    .form-success p { max-width: 30rem; margin-inline: auto; color: var(--ink-soft); }
    .success-mark { width: 4rem; height: 4rem; display: grid; place-items: center; margin: 0 auto 1.5rem; color: #fff; background: var(--green); border-radius: 50%; font-size: 1.8rem; }

    .status-page { min-height: 70vh; display: grid; place-items: center; padding-block: var(--section); text-align: center; }
    .status-inner { max-width: 50rem; }
    .status-inner h1 { margin-inline: auto; font-size: clamp(3rem, 7vw, 5.5rem); }
    .status-inner > p:not(.status-code):not(.request-id) { max-width: 38rem; margin-inline: auto; color: var(--ink-soft); font-size: 1.2rem; }
    .status-inner .button-row { justify-content: center; }
    .status-code { margin: 0; color: var(--orange); font-size: 1rem; font-weight: 800; letter-spacing: .18em; }
    .request-id { margin-top: 2rem; color: var(--ink-faint); font-size: .8rem; }

    .site-footer { margin-top: 1.25rem; padding-top: 5.5rem; color: #d3d6db; background: var(--ink); }
    .brand-light { color: #fff; }
    .footer-grid { display: grid; grid-template-columns: 1.4fr .6fr 1fr; gap: 5rem; padding-bottom: 4rem; }
    .footer-intro { max-width: 30rem; margin-top: 1.5rem; }
    .footer-grid h2 { max-width: none; color: #fff; font-size: .85rem; letter-spacing: .08em; text-transform: uppercase; white-space: nowrap; }
    .footer-grid nav { display: grid; gap: .55rem; }
    .footer-grid nav a { color: #d3d6db; text-decoration: none; }
    .footer-grid nav a:hover { color: #fff; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 2rem; padding-block: 1.5rem; border-top: 1px solid #4a515d; font-size: .8rem; }
    .footer-bottom p { margin: 0; }
}

@layer utilities {
    .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

    @media (max-width: 64rem) {
        .desktop-nav { display: none; }
        .mobile-menu { display: block; position: relative; }
        .mobile-menu summary { width: 2.75rem; height: 2.75rem; display: grid; align-content: center; gap: 5px; padding: .65rem; border: 1px solid var(--line); border-radius: .5rem; cursor: pointer; list-style: none; }
        .mobile-menu summary::-webkit-details-marker { display: none; }
        .mobile-menu summary span { display: block; height: 2px; background: var(--ink); }
        .mobile-menu nav { position: absolute; top: 3.5rem; right: 0; width: min(22rem, calc(100vw - 2.25rem)); display: grid; padding: 1rem; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
        .mobile-menu nav > a:not(.button) { padding: .65rem; color: var(--ink); font-weight: 650; text-decoration: none; border-radius: .4rem; }
        .mobile-menu nav > a:not(.button):hover { background: var(--paper-warm); }
        .mobile-menu .button { margin-top: .7rem; }
        .page-hero { min-height: auto; }
        .problem-grid { grid-template-columns: repeat(2, 1fr); }
        .tier-grid { grid-template-columns: 1fr 1fr; }
        .tier-card-featured { transform: none; }
        .tier-card:last-child { grid-column: 1 / -1; }
        .process-grid { grid-template-columns: 1fr; }
        .process-grid li { display: grid; grid-template-columns: 4rem 1fr; gap: 1rem; padding: 1.35rem 0; border-top: 1px solid var(--line); }
        .process-grid li:not(:last-child)::after { display: none; }
        .process-number { margin: .25rem 0 0; }
        .capability-grid, .principle-grid { grid-template-columns: repeat(2, 1fr); }
        .case-story-grid { grid-template-columns: repeat(2, 1fr); }
        .contact-hero { background: linear-gradient(180deg, var(--ink) 0 31%, var(--paper-warm) 31%); }
        .contact-grid { grid-template-columns: 1fr; }
        .contact-copy { position: static; }
    }

    @media (max-width: 46rem) {
        :root { --section: 4.5rem; }
        .container { width: min(calc(100% - 1.5rem), var(--container)); }
        .site-header { height: 4.75rem; }
        .brand { font-size: 1.05rem; }
        .brand img { width: 38px; height: 38px; }
        .page-hero { min-height: calc(100svh - 4.75rem); padding-block: 3.25rem 4.5rem; }
        .page-hero-grid { grid-template-columns: 1fr; }
        .page-hero h1 { font-size: clamp(3rem, 15vw, 4.5rem); }
        .page-hero-no-signal { min-height: auto; padding-block: 3.25rem 4rem; }
        .page-hero-no-signal h1 { max-width: none; font-size: clamp(2.9rem, 13vw, 3.7rem); }
        .hero-signal { display: none; }
        .button-row { align-items: stretch; flex-direction: column; }
        .button-row .button { width: 100%; }
        .problem-grid, .tier-grid, .capability-grid, .case-grid, .principle-grid { grid-template-columns: 1fr; }
        .problem-grid article { min-height: 14rem; }
        .tier-card:last-child { grid-column: auto; }
        .section-heading-row { align-items: start; flex-direction: column; }
        .split-feature, .faq-layout { grid-template-columns: 1fr; gap: 2.5rem; }
        .capability-card { min-height: 16rem; }
        .service-row { grid-template-columns: 2rem 1fr; gap: 1rem; }
        .service-row > div:last-child { grid-column: 2; }
        .case-study header { grid-template-columns: 1fr; gap: 1rem; }
        .case-story-grid { grid-template-columns: 1fr; }
        .case-story-grid .case-outcome-panel { grid-template-columns: 1fr; }
        .cta-panel { align-items: stretch; flex-direction: column; }
        .form-row { grid-template-columns: 1fr; gap: 0; }
        .contact-hero { background: linear-gradient(180deg, var(--ink) 0 28%, var(--paper-warm) 28%); }
        .footer-grid { grid-template-columns: 1fr; gap: 2.5rem; }
        .footer-bottom { flex-direction: column; }
    }

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

    @media print {
        .site-header, .site-footer, .cta-section, .button-row { display: none !important; }
        body { color: #000; background: #fff; }
        .section { padding-block: 2rem; }
    }
}