@layer reset, base, components, sections, responsive;

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body, h1, h2, h3, p, figure { margin: 0; }
  button, input, textarea { font: inherit; }
  a { color: inherit; text-decoration: none; }
  img, svg { display: block; max-width: 100%; }
}

@layer base {
  :root {
    --ink: #0b1211;
    --ink-soft: #111a18;
    --paper: #eef0e8;
    --paper-bright: #f7f8f2;
    --sage: #a9b1aa;
    --sage-dark: #626d68;
    --rule: rgba(11, 18, 17, 0.18);
    --rule-dark: rgba(238, 240, 232, 0.17);
    --signal: #c8ff3d;
    --signal-dim: #b4e836;
    --error: #ff806f;
    --shell: min(92vw, 1440px);
    --header-height: 78px;
    --sans: "Avenir Next", Avenir, "Segoe UI", Helvetica, Arial, sans-serif;
    --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  }

  html { background: var(--ink); }

  body {
    min-width: 320px;
    overflow-x: hidden;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.5;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
  }

  ::selection { background: var(--signal); color: var(--ink); }

  :focus-visible {
    outline: 2px solid var(--signal);
    outline-offset: 4px;
  }

  .shell { width: var(--shell); margin-inline: auto; }

  .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;
  }

  .skip-link {
    position: fixed;
    z-index: 1000;
    left: 1rem;
    top: 1rem;
    transform: translateY(-150%);
    padding: 0.8rem 1rem;
    background: var(--signal);
    color: var(--ink);
    font-weight: 700;
    transition: transform 180ms ease;
  }

  .skip-link:focus { transform: translateY(0); }

  [data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 700ms cubic-bezier(.22, 1, .36, 1), transform 700ms cubic-bezier(.22, 1, .36, 1);
  }

  [data-reveal].is-visible { opacity: 1; transform: none; }
}

@layer components {
  .site-header {
    position: fixed;
    z-index: 100;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding-inline: 4vw;
    color: var(--paper);
    border-bottom: 1px solid transparent;
    transition: background 300ms ease, border-color 300ms ease, color 300ms ease, height 300ms ease;
  }

  .site-header.is-scrolled {
    height: 66px;
    background: color-mix(in srgb, var(--ink) 88%, transparent);
    border-color: var(--rule-dark);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }

  .brand {
    justify-self: start;
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -0.025em;
  }

  .brand__mark {
    width: 27px;
    height: 27px;
    color: var(--signal);
    overflow: visible;
  }

  .brand__mark path {
    fill: none;
    stroke: currentColor;
    stroke-width: 1.65;
    stroke-linecap: round;
    stroke-linejoin: round;
  }

  .brand__mark circle { fill: currentColor; }

  .desktop-nav { display: flex; gap: clamp(1.6rem, 3vw, 3.5rem); }

  .desktop-nav a,
  .header-contact {
    position: relative;
    font-family: var(--mono);
    font-size: 0.69rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .desktop-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -7px;
    width: 100%;
    height: 1px;
    background: var(--signal);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 220ms ease;
  }

  .desktop-nav a:hover::after,
  .desktop-nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }

  .header-contact {
    justify-self: end;
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
  }

  .header-contact svg { width: 16px; }
  .header-contact path { fill: none; stroke: var(--signal); stroke-width: 1.2; }

  .menu-toggle,
  .mobile-menu { display: none; }

  .eyebrow,
  .section-index,
  .kicker,
  .contact__eyebrow {
    font-family: var(--mono);
    font-size: 0.7rem;
    letter-spacing: 0.115em;
    text-transform: uppercase;
  }

  .button {
    min-height: 52px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 1.4rem;
    padding: 0.8rem 1.15rem 0.8rem 1.4rem;
    border: 1px solid transparent;
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 220ms ease, color 220ms ease, transform 220ms ease;
  }

  .button--signal { background: var(--signal); color: var(--ink); }
  .button--signal:hover { background: var(--paper-bright); transform: translateY(-2px); }
  .button:disabled { opacity: 0.6; cursor: wait; transform: none; }

  .text-link {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    padding-block: 0.7rem;
    border-bottom: 1px solid var(--rule-dark);
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition: border-color 180ms ease;
  }

  .text-link:hover { border-color: var(--signal); }

  .section-heading {
    display: grid;
    grid-template-columns: 2fr 6fr 3fr;
    gap: 3vw;
    align-items: end;
    margin-bottom: clamp(3.5rem, 7vw, 7rem);
  }

  .section-heading h2 {
    font-size: clamp(2.8rem, 5.8vw, 6.5rem);
    line-height: 0.94;
    letter-spacing: -0.065em;
    font-weight: 500;
  }

  .section-heading > p:last-child {
    max-width: 24rem;
    color: var(--sage-dark);
    font-size: clamp(1rem, 1.35vw, 1.25rem);
  }
}

@layer sections {
  .hero {
    position: relative;
    min-height: max(760px, 100svh);
    overflow: hidden;
    background: var(--ink);
    color: var(--paper);
  }

  .hero__grid {
    position: absolute;
    inset: 0;
    opacity: 0.12;
    background-image:
      linear-gradient(rgba(238, 240, 232, 0.13) 1px, transparent 1px),
      linear-gradient(90deg, rgba(238, 240, 232, 0.13) 1px, transparent 1px);
    background-size: calc(100vw / 12) 88px;
    mask-image: linear-gradient(to bottom, black 0%, transparent 92%);
  }

  .hero__content {
    position: relative;
    min-height: max(760px, 100svh);
    display: grid;
    grid-template-columns: minmax(0, 6.5fr) minmax(360px, 4.5fr);
    grid-template-rows: 1fr auto;
    gap: 2vw 5vw;
    align-items: center;
    padding-top: calc(var(--header-height) + 3.5rem);
    padding-bottom: 1.5rem;
  }

  .hero__copy { padding-bottom: 3.8rem; }
  .hero .eyebrow { margin-bottom: clamp(1.5rem, 3vw, 2.8rem); color: var(--sage); }
  .hero .eyebrow::before { content: "—"; color: var(--signal); margin-right: 0.7rem; }

  .hero h1 {
    max-width: 950px;
    font-size: clamp(4rem, 7.6vw, 8.6rem);
    line-height: 0.87;
    letter-spacing: -0.072em;
    font-weight: 500;
  }

  .hero h1 em,
  .positioning h2 em,
  .company__copy h2 em,
  .contact h2 em {
    color: var(--signal);
    font-family: Georgia, "Times New Roman", serif;
    font-weight: 400;
  }

  .hero__intro {
    max-width: 38rem;
    margin-top: clamp(2rem, 4vw, 3.8rem);
    padding-left: clamp(0rem, 7vw, 8rem);
    color: var(--sage);
    font-size: clamp(1.05rem, 1.6vw, 1.45rem);
    line-height: 1.55;
  }

  .hero__actions {
    display: flex;
    gap: 2.3rem;
    align-items: center;
    margin-top: 2.6rem;
    padding-left: clamp(0rem, 7vw, 8rem);
  }

  .reveal {
    opacity: 0;
    transform: translateY(22px);
    animation: hero-reveal 800ms cubic-bezier(.22, 1, .36, 1) forwards;
  }

  .reveal--delay-1 { animation-delay: 110ms; }
  .reveal--delay-2 { animation-delay: 230ms; }
  .reveal--delay-3 { animation-delay: 360ms; }
  @keyframes hero-reveal { to { opacity: 1; transform: none; } }

  .signal-field {
    align-self: stretch;
    display: grid;
    place-items: center;
    padding-block: 5rem 3rem;
    --rx: 0deg;
    --ry: 0deg;
  }

  .signal-field__frame {
    position: relative;
    width: min(100%, 560px);
    aspect-ratio: 0.94;
    border: 1px solid var(--rule-dark);
    transform: perspective(900px) rotateX(var(--rx)) rotateY(var(--ry));
    transition: transform 180ms ease-out;
  }

  .signal-field__frame::before,
  .signal-field__frame::after {
    content: "";
    position: absolute;
    z-index: 2;
    width: 11px;
    height: 11px;
    border-color: var(--signal);
  }

  .signal-field__frame::before { left: -1px; top: -1px; border-left: 1px solid; border-top: 1px solid; }
  .signal-field__frame::after { right: -1px; bottom: -1px; border-right: 1px solid; border-bottom: 1px solid; }
  .signal-field svg { width: 100%; height: 100%; }

  .signal-field__coordinates path {
    fill: none;
    stroke: rgba(238, 240, 232, 0.075);
    stroke-width: 1;
  }

  .signal-line {
    fill: none;
    stroke: var(--paper);
    stroke-width: 1.25;
    stroke-dasharray: 900;
    stroke-dashoffset: 900;
    animation: signal-draw 1.35s cubic-bezier(.16, 1, .3, 1) 420ms forwards;
  }

  .signal-line--1,
  .signal-line--3 { stroke: var(--sage); }
  @keyframes signal-draw { to { stroke-dashoffset: 0; } }

  .signal-field__nodes circle { fill: var(--paper); }
  .signal-field__nodes .signal-field__core { fill: var(--signal); opacity: 0; animation: core-in 400ms ease 1.25s forwards; }
  @keyframes core-in { to { opacity: 1; } }

  .signal-field__label {
    position: absolute;
    z-index: 3;
    padding: 0.38rem 0.5rem;
    background: var(--ink);
    color: var(--sage);
    font-family: var(--mono);
    font-size: 0.59rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .signal-field__label--a { left: 5%; top: 5%; }
  .signal-field__label--b { left: 50%; top: 1%; transform: translateX(-50%); }
  .signal-field__label--c { right: 5%; top: 5%; }

  .signal-field__status {
    position: absolute;
    left: 50%;
    bottom: 3%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 0.55rem;
    white-space: nowrap;
    color: var(--sage);
    font-family: var(--mono);
    font-size: 0.56rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .signal-field__status span { width: 5px; height: 5px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 10px var(--signal); }

  .hero__foot {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 2rem;
    align-items: center;
    padding-top: 1.35rem;
    border-top: 1px solid var(--rule-dark);
    color: var(--sage);
    font-family: var(--mono);
    font-size: 0.58rem;
    letter-spacing: 0.09em;
    text-transform: uppercase;
  }

  .hero__foot a { display: flex; gap: 0.75rem; }
  .hero__foot a span { color: var(--signal); }

  .positioning { padding-block: clamp(7rem, 14vw, 14rem); background: var(--paper); }

  .positioning__layout {
    display: grid;
    grid-template-columns: 2fr 7fr 2fr;
    gap: 3vw;
  }

  .positioning__statement .kicker { margin-bottom: 2rem; color: var(--sage-dark); }

  .positioning__statement h2 {
    max-width: 1050px;
    font-size: clamp(3rem, 6.4vw, 7.2rem);
    line-height: 0.96;
    letter-spacing: -0.062em;
    font-weight: 500;
  }

  .positioning__statement h2 em { color: var(--ink); }

  .positioning__aside {
    align-self: end;
    padding-bottom: 0.6rem;
    color: var(--sage-dark);
    font-size: 0.93rem;
    line-height: 1.7;
  }

  .focus { padding-block: clamp(5rem, 11vw, 11rem); background: var(--paper-bright); }

  .focus-list { border-top: 1px solid var(--rule); }

  .focus-item {
    min-height: 230px;
    display: grid;
    grid-template-columns: 2fr 6fr 3fr;
    gap: 3vw;
    align-items: center;
    padding-block: 2rem;
    border-bottom: 1px solid var(--rule);
    transition: background 280ms ease, padding 280ms ease;
  }

  .focus-item:hover { background: var(--paper); padding-inline: 1.2rem; }

  .focus-item__number {
    align-self: start;
    padding-top: 0.3rem;
    font-family: var(--mono);
    font-size: 0.65rem;
    color: var(--sage-dark);
  }

  .focus-item__copy h3 {
    margin-bottom: 1.2rem;
    font-size: clamp(2.2rem, 4.4vw, 5rem);
    line-height: 1;
    letter-spacing: -0.055em;
    font-weight: 500;
  }

  .focus-item__copy p { max-width: 39rem; color: var(--sage-dark); font-size: clamp(1rem, 1.2vw, 1.17rem); }

  .focus-item__diagram {
    position: relative;
    justify-self: end;
    width: min(100%, 285px);
    height: 130px;
    overflow: hidden;
    border: 1px solid var(--rule);
    background-image: radial-gradient(var(--rule) 1px, transparent 1px);
    background-size: 13px 13px;
  }

  .focus-item__diagram--product span {
    position: absolute;
    width: 32px;
    height: 32px;
    border: 1px solid var(--ink);
    background: var(--paper-bright);
  }

  .focus-item__diagram--product span:nth-child(1) { left: 18px; top: 48px; }
  .focus-item__diagram--product span:nth-child(2) { left: 105px; top: 18px; }
  .focus-item__diagram--product span:nth-child(3) { left: 105px; top: 78px; }
  .focus-item__diagram--product span:nth-child(4) { right: 18px; top: 48px; background: var(--signal); }
  .focus-item__diagram--product::before,
  .focus-item__diagram--product::after { content: ""; position: absolute; left: 50px; right: 50px; height: 1px; background: var(--ink); transform-origin: left; }
  .focus-item__diagram--product::before { top: 63px; transform: rotate(-19deg); }
  .focus-item__diagram--product::after { top: 64px; transform: rotate(19deg); }

  .focus-item__diagram--experience span { position: absolute; left: 18px; right: 18px; height: 22px; border: 1px solid var(--ink); background: var(--paper-bright); }
  .focus-item__diagram--experience span:nth-child(1) { top: 18px; }
  .focus-item__diagram--experience span:nth-child(2) { top: 53px; right: 62px; background: var(--signal); }
  .focus-item__diagram--experience span:nth-child(3) { top: 88px; right: 108px; }

  .focus-item__diagram--cloud span { position: absolute; width: 9px; height: 9px; border-radius: 50%; background: var(--ink); }
  .focus-item__diagram--cloud span:nth-child(1) { left: 22px; top: 60px; }
  .focus-item__diagram--cloud span:nth-child(2) { left: 96px; top: 25px; }
  .focus-item__diagram--cloud span:nth-child(3) { left: 96px; bottom: 25px; }
  .focus-item__diagram--cloud span:nth-child(4) { right: 22px; top: 60px; background: var(--signal); box-shadow: 0 0 0 5px rgba(200,255,61,.25); }
  .focus-item__diagram--cloud::before { content: ""; position: absolute; inset: 28px 27px; border: 1px solid var(--ink); transform: skewX(-28deg); }

  .approach { overflow: hidden; background: var(--ink); color: var(--paper); }

  .approach__marquee {
    display: flex;
    width: max-content;
    padding-block: 1.1rem;
    background: var(--signal);
    color: var(--ink);
    font-size: clamp(0.8rem, 1.2vw, 1rem);
    font-family: var(--mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    animation: marquee 28s linear infinite;
  }

  .approach__marquee span { min-width: max-content; padding-right: 2rem; }
  @keyframes marquee { to { transform: translateX(-50%); } }

  .approach__inner { padding-block: clamp(7rem, 12vw, 12rem); }
  .section-heading--dark { grid-template-columns: 2fr 9fr; align-items: start; }
  .section-heading--dark h2 { color: var(--paper); }

  .principles { margin-left: calc((100% + 6vw) / 11 * 2); border-top: 1px solid var(--rule-dark); }

  .principle {
    min-height: 190px;
    display: grid;
    grid-template-columns: 1fr 4fr 3fr;
    gap: 3vw;
    align-items: start;
    padding-block: 2rem;
    border-bottom: 1px solid var(--rule-dark);
  }

  .principle > p { font-family: var(--mono); font-size: 0.65rem; color: var(--signal); }
  .principle h3 { font-size: clamp(1.75rem, 3vw, 3.4rem); line-height: 1; letter-spacing: -0.045em; font-weight: 500; }
  .principle div span { display: block; margin-bottom: 0.9rem; font-family: var(--mono); font-size: 0.63rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--sage); }
  .principle div p { color: var(--sage); font-size: 0.95rem; line-height: 1.7; }

  .company { padding-block: clamp(7rem, 14vw, 14rem); background: var(--paper); }

  .company__layout { display: grid; grid-template-columns: 3fr 8fr; gap: 7vw; }
  .company__meta { display: flex; flex-direction: column; justify-content: space-between; }

  .company__monogram { width: min(100%, 250px); aspect-ratio: 1; margin-top: 7rem; }
  .company__monogram svg { width: 100%; height: 100%; }
  .company__monogram path { fill: none; stroke: var(--rule); stroke-width: 1; }
  .company__monogram circle { fill: var(--signal-dim); }

  .company__copy .kicker { margin-bottom: 2rem; color: var(--sage-dark); }
  .company__copy h2 { max-width: 950px; font-size: clamp(3.3rem, 7vw, 8rem); line-height: 0.92; letter-spacing: -0.068em; font-weight: 500; }
  .company__copy h2 em { display: block; color: var(--ink); }
  .company__copy > p:last-child { max-width: 50rem; margin-top: clamp(2.5rem, 5vw, 5rem); padding-left: 25%; font-size: clamp(1.1rem, 1.7vw, 1.5rem); line-height: 1.6; color: var(--sage-dark); }

  .contact { padding-block: clamp(7rem, 12vw, 11rem); background: var(--ink-soft); color: var(--paper); }
  .contact__layout { display: grid; grid-template-columns: 5fr 5fr; gap: 10vw; }
  .contact__eyebrow { display: flex; align-items: center; gap: 0.55rem; margin-top: clamp(4rem, 8vw, 8rem); color: var(--sage); }
  .contact__eyebrow span { width: 6px; height: 6px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 12px var(--signal); }
  .contact h2 { margin-top: 1.6rem; font-size: clamp(3.7rem, 7.1vw, 7.7rem); line-height: 0.9; letter-spacing: -0.065em; font-weight: 500; }
  .contact__lede { max-width: 33rem; margin-top: 2.8rem; color: var(--sage); font-size: clamp(1rem, 1.3vw, 1.2rem); }

  .contact__email {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    margin-top: 2rem;
    padding-bottom: 0.35rem;
    border-bottom: 1px solid var(--rule-dark);
    font-family: var(--mono);
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  .contact__email span { color: var(--signal); }

  .contact-form { align-self: end; padding-top: 3rem; }
  .contact-form label { display: block; border-bottom: 1px solid var(--rule-dark); }
  .contact-form label > span:first-child { display: flex; justify-content: space-between; padding-top: 1.45rem; font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--sage); }
  .contact-form label small { font-size: inherit; font-weight: 400; opacity: 0.65; }
  .contact-form input:not([type="checkbox"]),
  .contact-form textarea {
    width: 100%;
    padding: 0.9rem 0 1.2rem;
    border: 0;
    border-radius: 0;
    outline: 0;
    background: transparent;
    color: var(--paper);
    font-size: clamp(1.05rem, 1.5vw, 1.3rem);
    resize: vertical;
  }

  .contact-form textarea { min-height: 120px; }
  .contact-form input::placeholder,
  .contact-form textarea::placeholder { color: rgba(169,177,170,.46); }
  .contact-form label:focus-within { border-color: var(--signal); }
  .contact-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
  .contact-form .honeypot { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

  .contact-form .consent {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.75rem;
    align-items: start;
    padding-block: 1.35rem;
    border: 0;
    color: var(--sage);
    font-size: 0.75rem;
    line-height: 1.6;
  }

  .consent input { width: 15px; height: 15px; margin-top: 0.2rem; accent-color: var(--signal); }
  .consent a { color: var(--paper); text-decoration: underline; text-underline-offset: 3px; }
  .cf-turnstile { min-height: 65px; margin-top: 0.35rem; }
  .form-submit { display: flex; align-items: center; gap: 1.2rem; margin-top: 1rem; }
  .form-submit .button { border: 0; }
  .form-submit svg { width: 18px; }
  .form-submit path { fill: none; stroke: currentColor; stroke-width: 1.3; }
  .form-status { max-width: 19rem; min-height: 2.5em; font-size: 0.76rem; line-height: 1.45; color: var(--sage); }
  .form-status.is-error { color: var(--error); }
  .form-status.is-success { color: var(--signal); }

  .site-footer { background: var(--ink); color: var(--paper); }
  .site-footer__top { min-height: 210px; display: grid; grid-template-columns: 1fr 1fr auto; gap: 2rem; align-items: center; border-bottom: 1px solid var(--rule-dark); }
  .brand--footer { font-size: 1.2rem; }
  .site-footer__email { justify-self: start; color: var(--sage); transition: color 180ms ease; }
  .site-footer__email:hover { color: var(--paper); }
  .back-to-top { display: flex; gap: 1rem; font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.08em; text-transform: uppercase; }
  .back-to-top span { color: var(--signal); }
  .site-footer__bottom { min-height: 88px; display: grid; grid-template-columns: 1fr 1fr auto; gap: 2rem; align-items: center; color: var(--sage); font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.07em; text-transform: uppercase; }
  .site-footer__bottom nav { display: flex; gap: 1.6rem; }
  .site-footer__bottom a:hover { color: var(--paper); }
}

@layer responsive {
  @media (max-width: 1050px) {
    :root { --shell: min(90vw, 1440px); }
    .hero__content { grid-template-columns: 1.15fr 0.85fr; gap: 3vw; }
    .hero h1 { font-size: clamp(4rem, 8.2vw, 7rem); }
    .hero__intro, .hero__actions { padding-left: 0; }
    .positioning__layout { grid-template-columns: 1fr 7fr; }
    .positioning__aside { grid-column: 2; max-width: 34rem; margin-top: 3rem; }
    .focus-item, .section-heading { grid-template-columns: 1fr 5fr 3fr; }
    .contact__layout { gap: 6vw; }
    .company__copy > p:last-child { padding-left: 12%; }
  }

  @media (max-width: 800px) {
    :root { --header-height: 68px; --shell: calc(100vw - 40px); }
    .site-header { grid-template-columns: 1fr auto; padding-inline: 20px; }
    .desktop-nav, .header-contact { display: none; }
    .menu-toggle {
      justify-self: end;
      display: grid;
      place-content: center;
      gap: 6px;
      width: 42px;
      height: 42px;
      padding: 0;
      border: 1px solid var(--rule-dark);
      background: transparent;
      color: inherit;
      cursor: pointer;
    }
    .menu-toggle > span:not(.sr-only) { display: block; width: 17px; height: 1px; background: currentColor; transition: transform 200ms ease; }
    .menu-toggle[aria-expanded="true"] > span:nth-child(2) { transform: translateY(3.5px) rotate(45deg); }
    .menu-toggle[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-3.5px) rotate(-45deg); }
    .mobile-menu {
      position: fixed;
      z-index: -1;
      inset: 0;
      display: grid;
      place-items: center;
      padding: 6rem 20px 2rem;
      background: var(--ink);
      opacity: 0;
      visibility: hidden;
      transition: opacity 220ms ease, visibility 220ms ease;
    }
    .mobile-menu[hidden] { display: none; }
    .mobile-menu.is-open { opacity: 1; visibility: visible; }
    .mobile-menu nav { width: 100%; border-top: 1px solid var(--rule-dark); }
    .mobile-menu a { display: flex; align-items: baseline; gap: 1rem; padding-block: 1rem; border-bottom: 1px solid var(--rule-dark); font-size: clamp(2.3rem, 11vw, 4rem); line-height: 1; letter-spacing: -0.05em; }
    .mobile-menu a span { color: var(--signal); font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0; }
    body.menu-open { overflow: hidden; }

    .hero { min-height: auto; }
    .hero__content { min-height: auto; grid-template-columns: 1fr; grid-template-rows: auto; padding-top: 9.5rem; padding-bottom: 1.2rem; }
    .hero__copy { padding: 0; }
    .hero h1 { font-size: clamp(3.8rem, 15vw, 6.8rem); line-height: 0.87; }
    .hero h1 br { display: none; }
    .hero__intro { max-width: 33rem; margin-top: 2rem; font-size: 1.06rem; }
    .hero__actions { flex-wrap: wrap; gap: 1.25rem 2rem; margin-top: 2rem; }
    .signal-field { padding-block: 3rem 1.7rem; }
    .signal-field__frame { width: min(100%, 480px); }
    .hero__foot { grid-template-columns: 1fr auto; margin-top: 0; }
    .hero__foot span:nth-child(2) { display: none; }

    .positioning { padding-block: 6.5rem; }
    .positioning__layout { grid-template-columns: 1fr; }
    .positioning__statement, .positioning__aside { grid-column: auto; }
    .positioning__statement { margin-top: 4rem; }
    .positioning__statement h2 { font-size: clamp(3rem, 12vw, 5.5rem); }
    .positioning__aside { margin-top: 2rem; padding-left: 20%; }

    .focus { padding-block: 6rem; }
    .section-heading { grid-template-columns: 1fr; gap: 0; align-items: start; }
    .section-heading h2 { margin-top: 4rem; }
    .section-heading > p:last-child { margin-top: 1.4rem; }
    .focus-item { grid-template-columns: 40px 1fr; min-height: 0; padding-block: 2.5rem; }
    .focus-item__number { grid-row: 1 / 3; }
    .focus-item__copy { grid-column: 2; }
    .focus-item__copy h3 { font-size: clamp(2.3rem, 8.5vw, 4rem); }
    .focus-item__diagram { grid-column: 2; justify-self: start; margin-top: 1.8rem; width: min(100%, 360px); }

    .approach__inner { padding-block: 6rem; }
    .section-heading--dark { grid-template-columns: 1fr; }
    .section-heading--dark h2 { margin-top: 4rem; }
    .principles { margin-left: 0; }
    .principle { grid-template-columns: 36px 1fr; min-height: 0; }
    .principle h3 { font-size: clamp(2rem, 8vw, 3.5rem); }
    .principle div { grid-column: 2; }

    .company { padding-block: 6.5rem; }
    .company__layout { grid-template-columns: 1fr; }
    .company__meta { flex-direction: row; align-items: start; }
    .company__monogram { width: 110px; margin: -1.6rem 0 0; }
    .company__copy { margin-top: 2.5rem; }
    .company__copy h2 { font-size: clamp(3.4rem, 13vw, 6.5rem); }
    .company__copy > p:last-child { margin-top: 2.5rem; padding-left: 15%; font-size: 1.05rem; }

    .contact { padding-block: 6.5rem; }
    .contact__layout { grid-template-columns: 1fr; }
    .contact__eyebrow { margin-top: 4rem; }
    .contact h2 { font-size: clamp(3.8rem, 14vw, 7rem); }
    .contact-form { margin-top: 2rem; }

    .site-footer__top { min-height: 180px; grid-template-columns: 1fr auto; }
    .site-footer__email { display: none; }
    .site-footer__bottom { grid-template-columns: 1fr auto; padding-block: 1.5rem; }
    .site-footer__bottom > p:nth-child(2) { display: none; }
  }

  @media (max-width: 520px) {
    :root { --shell: calc(100vw - 32px); }
    .site-header { padding-inline: 16px; }
    .brand { font-size: 0.94rem; }
    .hero__content { padding-top: 8.2rem; }
    .hero .eyebrow { font-size: 0.61rem; }
    .hero h1 { font-size: clamp(3.45rem, 16.2vw, 5.2rem); }
    .hero__actions { align-items: stretch; flex-direction: column; }
    .hero__actions .button { width: 100%; justify-content: space-between; }
    .hero__actions .text-link { align-self: flex-start; }
    .signal-field { padding-top: 2.5rem; }
    .hero__foot { font-size: 0.51rem; }
    .positioning__aside { padding-left: 12%; }
    .focus-item { grid-template-columns: 26px 1fr; gap: 1rem; }
    .focus-item__diagram { height: 116px; }
    .contact-form .form-row { grid-template-columns: 1fr; gap: 0; }
    .form-submit { align-items: stretch; flex-direction: column; }
    .form-submit .button { width: 100%; justify-content: space-between; }
    .site-footer__bottom { grid-template-columns: 1fr; gap: 0.8rem; }
  }

  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
    [data-reveal], .reveal { opacity: 1; transform: none; }
    .signal-line { stroke-dashoffset: 0; }
    .signal-field__nodes .signal-field__core { opacity: 1; }
  }
}

@layer sections {
  .legal-page { background: var(--paper); }

  .legal {
    min-height: 100vh;
    padding-top: calc(var(--header-height) + 6rem);
    padding-bottom: clamp(6rem, 10vw, 10rem);
    background: var(--paper);
  }

  .legal__header {
    display: grid;
    grid-template-columns: 2fr 7fr 2fr;
    gap: 3vw;
    align-items: end;
    padding-bottom: clamp(4rem, 8vw, 8rem);
    border-bottom: 1px solid var(--rule);
  }

  .legal__header h1 {
    font-size: clamp(4rem, 8vw, 9rem);
    line-height: 0.82;
    letter-spacing: -0.07em;
    font-weight: 500;
  }

  .legal__header h1 em {
    color: var(--ink);
    font-family: Georgia, "Times New Roman", serif;
    font-weight: 400;
  }

  .legal__header > p:last-child {
    color: var(--sage-dark);
    font-family: var(--mono);
    font-size: 0.61rem;
    letter-spacing: 0.07em;
    text-transform: uppercase;
  }

  .legal__body {
    display: grid;
    grid-template-columns: 2fr 7fr 2fr;
    gap: 3vw;
    padding-top: 4rem;
  }

  .legal__body aside {
    color: var(--sage-dark);
    font-family: var(--mono);
    font-size: 0.61rem;
    letter-spacing: 0.08em;
    line-height: 1.7;
    text-transform: uppercase;
  }

  .legal__body aside a { display: inline-flex; gap: 0.5rem; margin-top: 3rem; color: var(--ink); }
  .legal__body aside a span { color: var(--signal-dim); }
  .legal__body article { grid-column: 2; }
  .legal__body article section { display: grid; grid-template-columns: 2fr 4fr; gap: 3vw; padding-block: 2.2rem; border-bottom: 1px solid var(--rule); }
  .legal__body article section:first-child { padding-top: 0; }
  .legal__body h2 { font-size: clamp(1.3rem, 2vw, 2rem); line-height: 1.1; letter-spacing: -0.035em; font-weight: 550; }
  .legal__body article p { color: var(--sage-dark); line-height: 1.75; }
  .legal__body article a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

  .error-page { min-height: 100svh; background: var(--ink); color: var(--paper); }
  .error-page main { min-height: 100svh; width: var(--shell); margin-inline: auto; display: flex; flex-direction: column; padding-block: 2rem 4rem; }
  .error-page__content { flex: 1; display: grid; place-content: center; justify-items: start; padding-block: 4rem; }
  .error-page__code { color: var(--signal); font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em; }
  .error-page h1 { margin-block: 1.2rem 3rem; font-size: clamp(4rem, 9vw, 9rem); line-height: 0.87; letter-spacing: -0.07em; font-weight: 500; }
  .error-page h1 em { color: var(--signal); font-family: Georgia, "Times New Roman", serif; font-weight: 400; }
}

@layer responsive {
  @media (max-width: 800px) {
    .legal { padding-top: calc(var(--header-height) + 4rem); }
    .legal__header { grid-template-columns: 1fr; }
    .legal__header h1 { margin-top: 3.5rem; }
    .legal__body { grid-template-columns: 1fr; }
    .legal__body aside { display: none; }
    .legal__body article { grid-column: 1; }
    .legal__body article section { grid-template-columns: 1fr; gap: 1rem; }
    .error-page main { padding-top: 1.5rem; }
  }
}