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

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; overflow-x: clip; }
  body { margin: 0; min-width: 320px; }
  img { display: block; max-width: 100%; }
  button, input, textarea, select { font: inherit; }
  button { color: inherit; }
  a { color: inherit; }
  h1, h2, h3, p, figure, dl, dd { margin: 0; }
  ul, ol { margin: 0; padding: 0; list-style: none; }
}

@layer base {
  :root {
    --bg: oklch(0.965 0.012 82);
    --surface: oklch(0.992 0.005 82);
    --fg: oklch(0.205 0.018 255);
    --muted: oklch(0.48 0.018 252);
    --border: oklch(0.80 0.018 78);
    --accent: oklch(0.49 0.095 47);
    --font-display: "Prata", Georgia, "Times New Roman", serif;
    --font-body: "Manrope", "Helvetica Neue", Helvetica, sans-serif;
    --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
    --deep: oklch(0.24 0.045 255);
    --deep-hover: oklch(0.30 0.042 255);
    --deep-fg: oklch(0.94 0.015 82);
    --deep-muted: oklch(0.75 0.018 82);
    --container: 1280px;
    --gutter: clamp(20px, 4vw, 64px);
    --section-space: clamp(76px, 8.5vw, 138px);
    --focus-ring: 0 0 0 3px color-mix(in oklch, var(--accent), transparent 42%);
    --ease: cubic-bezier(.22, 1, .36, 1);
  }

  body {
    overflow-x: clip;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.55;
    text-rendering: optimizeLegibility;
  }

  h1, h2, h3 {
    color: var(--fg);
    font-family: var(--font-display);
    font-weight: 590;
    text-wrap: balance;
  }

  h1 { font-size: clamp(3.55rem, 7.1vw, 6.65rem); line-height: .97; letter-spacing: -.03em; }
  h2 { font-size: clamp(2.35rem, 4.25vw, 4.4rem); line-height: 1.02; letter-spacing: -.025em; }
  h3 { font-size: clamp(1.35rem, 2vw, 2rem); line-height: 1.14; letter-spacing: -.014em; }
  p { max-width: 67ch; text-wrap: pretty; }
  a, button { touch-action: manipulation; -webkit-tap-highlight-color: color-mix(in oklch, var(--accent), transparent 78%); }
  a:focus-visible, button:focus-visible { outline: none; box-shadow: var(--focus-ring); }
  section[id] { scroll-margin-top: 84px; }
  ::selection { background: color-mix(in oklch, var(--accent), transparent 70%); color: var(--fg); }

  .skip-link {
    position: fixed;
    z-index: 60;
    left: 18px;
    top: 12px;
    transform: translateY(-160%);
    padding: 10px 14px;
    background: var(--fg);
    color: var(--bg);
    text-decoration: none;
    transition: transform .2s var(--ease);
  }

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

@layer structure {
  .section-shell, .header-inner, .site-footer > div {
    width: min(100%, calc(var(--container) + 2 * var(--gutter)));
    margin-inline: auto;
    padding-inline: var(--gutter);
  }

  .site-header {
    position: sticky;
    z-index: 30;
    top: 0;
    background: color-mix(in oklch, var(--bg), var(--surface) 24%);
    border-bottom: 1px solid var(--border);
  }

  .header-inner {
    min-height: 68px;
    display: grid;
    grid-template-columns: minmax(200px, .72fr) auto minmax(112px, .3fr);
    align-items: center;
    gap: clamp(20px, 2.6vw, 42px);
  }

  .brand { font-weight: 590; letter-spacing: -.01em; text-decoration: none; }
  .brand:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
  .site-nav { display: flex; align-items: center; gap: clamp(16px, 1.85vw, 28px); }
  .site-nav a {
    position: relative;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    font-size: 13px;
    font-weight: 550;
    letter-spacing: .01em;
  }

  .site-nav a::after {
    content: "";
    position: absolute;
    inset: auto 0 8px;
    height: 1px;
    background: currentColor;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform .22s var(--ease);
  }

  .site-nav a:hover::after,
  .site-nav a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
  .mobile-cv { display: none; }
  .header-actions { justify-self: end; display: flex; align-items: center; gap: 8px; }
  .cv-link {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    border-bottom: 1px solid var(--fg);
    text-decoration: none;
    font-size: 13px;
    font-weight: 590;
    letter-spacing: .02em;
    transition: color .2s ease, border-color .2s ease;
  }

  .cv-link:hover { color: var(--accent); border-color: var(--accent); }
  .menu-toggle {
    min-width: 44px;
    min-height: 44px;
    display: none;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px;
    border: 0;
    background: transparent;
    cursor: pointer;
  }

  .menu-lines { width: 18px; display: grid; gap: 4px; }
  .menu-lines i { display: block; height: 1px; background: currentColor; transform-origin: center; transition: transform .2s ease, opacity .2s ease; }
  .menu-label { font-size: 11px; font-weight: 550; letter-spacing: .02em; }
  .menu-toggle[aria-expanded="true"] .menu-lines i:first-child { transform: translateY(5px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-lines i:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] .menu-lines i:last-child { transform: translateY(-5px) rotate(-45deg); }

  main > section:not(.hero) { padding-block: var(--section-space); border-top: 1px solid var(--border); }
  .hero { padding-top: clamp(46px, 6.8vw, 104px); padding-bottom: clamp(38px, 5.5vw, 76px); }
  .hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.48fr) minmax(250px, .52fr);
    gap: clamp(44px, 7vw, 108px);
    align-items: end;
  }

  .hero-copy { min-width: 0; }
  .hero-copy h1 { max-width: 11.5ch; }
  .hero-lead { margin-top: clamp(26px, 3vw, 40px); max-width: 60ch; font-size: clamp(1.05rem, 1.45vw, 1.28rem); line-height: 1.6; }
  .hero-operator-note { margin-top: 18px; max-width: 64ch; color: var(--muted); font-size: 14px; }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }

  .hero-portrait { width: min(100%, 320px); justify-self: end; }
  .hero-portrait img {
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 5;
    object-fit: cover;
    object-position: 50% 35%;
    border: 1px solid var(--border);
    filter: saturate(.72) contrast(1.02);
  }

  .hero-portrait figcaption {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 9px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .08em;
    text-transform: uppercase;
  }

  .eyebrow, .section-kicker, .section-index, .metric-label, .problem-index, .format-number,
  .format-label, .expertise-index, .principle-index, .impact-label, .situation-index, .contact-links span {
    font-family: var(--font-mono);
    font-size: 11px;
    line-height: 1.45;
    letter-spacing: .08em;
    text-transform: uppercase;
  }

  .eyebrow { margin-bottom: 22px; color: var(--accent); }
  .button {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 18px;
    border: 1px solid var(--fg);
    text-decoration: none;
    font-size: 13px;
    font-weight: 590;
    letter-spacing: .02em;
    transition: transform .18s ease, background-color .18s ease, color .18s ease, border-color .18s ease;
  }

  .button-primary { background: var(--accent); border-color: var(--accent); color: var(--surface); }
  .button-primary:hover { transform: translateY(-2px); background: var(--fg); border-color: var(--fg); color: var(--bg); }
  .button-secondary { background: transparent; color: var(--fg); }
  .button-secondary:hover { transform: translateY(-2px); background: var(--surface); color: var(--fg); }
  .button:active { transform: translateY(1px); }

  .method-rail {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: clamp(48px, 6vw, 82px);
    border-block: 1px solid var(--fg);
  }

  .method-rail li { min-width: 0; padding: 16px 18px 18px; border-right: 1px solid var(--border); }
  .method-rail li:first-child { padding-left: 0; }
  .method-rail li:last-child { padding-right: 0; border-right: 0; }
  .method-rail span { color: var(--muted); font-family: var(--font-mono); font-size: 10px; letter-spacing: .06em; }
  .method-rail strong { display: block; margin-top: 8px; font-family: var(--font-display); font-size: clamp(1.05rem, 1.45vw, 1.3rem); font-weight: 590; }

  .hero-metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 28px; }
  .hero-metric { min-width: 0; padding: 2px clamp(16px, 2.1vw, 28px) 0; border-right: 1px solid var(--border); }
  .hero-metric:first-child { padding-left: 0; }
  .hero-metric:last-child { padding-right: 0; border-right: 0; }
  .hero-metric dt { font-family: var(--font-display); font-size: clamp(1.6rem, 2.5vw, 2.35rem); line-height: 1; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
  .hero-metric dd { margin-top: 8px; color: var(--muted); font-size: 12px; line-height: 1.35; }

  .section-heading {
    display: grid;
    grid-template-columns: 150px minmax(0, 1.1fr) minmax(270px, .52fr);
    gap: clamp(30px, 5vw, 72px);
    align-items: end;
    margin-bottom: clamp(48px, 6vw, 86px);
  }

  .section-index { color: var(--accent); font-variant-numeric: tabular-nums; }
  .section-kicker { margin-top: 8px; color: var(--muted); }
  .section-heading > p { padding-top: 14px; border-top: 1px solid var(--fg); color: var(--muted); font-size: 14px; }
}

@layer components {
  .problems-section { background: color-mix(in oklch, var(--surface), var(--bg) 45%); }
  .problem-ledger { border-top: 1px solid var(--fg); }
  .problem-item {
    display: grid;
    grid-template-columns: 82px minmax(180px, .55fr) minmax(0, 1.45fr);
    gap: clamp(24px, 4vw, 62px);
    padding: clamp(28px, 4vw, 48px) 0;
    border-bottom: 1px solid var(--border);
  }

  .problem-index { color: var(--muted); font-variant-numeric: tabular-nums; }
  .problem-item h3 { font-size: clamp(1.65rem, 2.7vw, 2.65rem); }
  .problem-statement { max-width: 62ch; font-family: var(--font-display); font-size: clamp(1.15rem, 1.65vw, 1.48rem); line-height: 1.34; }
  .problem-signals { margin-top: 14px; color: var(--muted); font-size: 14px; }

  .formats-section { background: var(--surface); }
  .formats-intro { max-width: 57ch; }
  .format-ledger { border-top: 2px solid var(--fg); }
  .format-item {
    display: grid;
    grid-template-columns: 74px minmax(210px, .72fr) minmax(150px, .42fr) minmax(300px, 1.18fr);
    gap: clamp(22px, 3.7vw, 54px);
    padding: clamp(34px, 4.4vw, 58px) 0;
    border-bottom: 1px solid var(--fg);
  }

  .format-number { color: var(--muted); font-variant-numeric: tabular-nums; }
  .format-title h3 { font-size: clamp(1.6rem, 2.5vw, 2.55rem); }
  .format-title p { margin-top: 16px; color: var(--muted); font-size: 13px; }
  .format-economics { padding-top: 2px; }
  .format-price { font-family: var(--font-display); font-size: clamp(1.35rem, 2vw, 1.85rem); line-height: 1.18; font-variant-numeric: tabular-nums; }
  .format-duration { margin-top: 10px; color: var(--muted); font-family: var(--font-mono); font-size: 11px; letter-spacing: .04em; text-transform: uppercase; }
  .format-body { min-width: 0; }
  .format-body > p { font-size: 15px; }
  .format-detail { margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--border); }
  .format-label { color: var(--muted); }
  .format-detail p { margin-top: 8px; color: var(--muted); font-size: 13px; }
  .format-result { color: var(--fg) !important; }
  .format-route {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    gap: 18px;
    margin-top: 20px;
    border-bottom: 1px solid var(--fg);
    text-decoration: none;
    font-size: 13px;
    font-weight: 590;
    letter-spacing: .02em;
  }

  .format-route span { transition: transform .2s ease; }
  .format-route:hover span { transform: translateX(4px); }
  .format-route:active { transform: translateY(1px); }

  .expertise-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--fg); border-left: 1px solid var(--border); }
  .expertise-item {
    min-width: 0;
    min-height: 142px;
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 18px;
    align-content: start;
    padding: clamp(24px, 3vw, 36px);
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .expertise-index { color: var(--muted); font-variant-numeric: tabular-nums; }
  .expertise-item h3 { font-size: clamp(1.15rem, 1.65vw, 1.5rem); }

  .operator-section { background: color-mix(in oklch, var(--surface), var(--bg) 38%); }
  .operator-layout { display: grid; grid-template-columns: minmax(280px, .82fr) minmax(0, 1.18fr); gap: clamp(56px, 9vw, 136px); }
  .operator-copy h2 { max-width: 12ch; margin-top: 22px; }
  .operator-note { margin-top: 26px; color: var(--muted); font-size: 14px; }
  .principles { border-top: 1px solid var(--fg); }
  .principle {
    display: grid;
    grid-template-columns: 52px minmax(180px, .7fr) minmax(0, 1.3fr);
    gap: 22px;
    padding: 24px 0 26px;
    border-bottom: 1px solid var(--border);
  }

  .principle-index { color: var(--muted); font-variant-numeric: tabular-nums; }
  .principle h3 { font-family: var(--font-body); font-size: 15px; font-weight: 600; letter-spacing: 0; }
  .principle p { color: var(--muted); font-size: 14px; }

  .impact-ledger { border-top: 2px solid var(--fg); }
  .impact-item {
    display: grid;
    grid-template-columns: minmax(150px, .48fr) minmax(250px, 1fr) minmax(280px, 1.2fr) 44px;
    gap: clamp(24px, 4vw, 62px);
    align-items: center;
    padding: clamp(26px, 3.6vw, 42px) 0;
    border-bottom: 1px solid var(--border);
    text-decoration: none;
    transition: background-color .2s ease, padding .2s ease;
  }

  .impact-item:hover { padding-inline: 12px; background: var(--surface); }
  .impact-label { color: var(--muted); }
  .impact-item h3 { font-size: clamp(1.4rem, 2.2vw, 2rem); }
  .impact-results { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
  .impact-results p { color: var(--muted); font-size: 12px; }
  .impact-results strong { display: block; margin-bottom: 4px; color: var(--fg); font-size: clamp(1rem, 1.35vw, 1.2rem); font-variant-numeric: tabular-nums; }
  .impact-arrow { justify-self: end; font-size: 20px; transition: transform .2s ease; }
  .impact-item:hover .impact-arrow { transform: translate(3px, -3px); }
  .all-cases { min-height: 50px; display: flex; align-items: center; justify-content: space-between; margin-top: 18px; border-bottom: 1px solid var(--fg); text-decoration: none; font-weight: 590; }
  .all-cases span { transition: transform .2s ease; }
  .all-cases:hover span { transform: translateX(4px); }

  .fit-layout { display: grid; grid-template-columns: minmax(260px, .68fr) minmax(0, 1.32fr); gap: clamp(50px, 8vw, 124px); }
  .fit-copy h2 { max-width: 10ch; margin-top: 22px; }
  .audience-note { margin-top: 30px; padding-top: 18px; border-top: 1px solid var(--fg); color: var(--muted); font-size: 13px; }
  .situations { border-top: 1px solid var(--fg); }
  .situation {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 18px;
    padding: 20px 0 22px;
    border-bottom: 1px solid var(--border);
  }

  .situation-index { color: var(--muted); font-variant-numeric: tabular-nums; }
  .situation p { font-family: var(--font-display); font-size: clamp(1.18rem, 2vw, 1.75rem); line-height: 1.22; }

  .contact-section { background: var(--deep); color: var(--deep-fg); border-top-color: var(--deep); }
  .contact-layout { display: grid; grid-template-columns: minmax(280px, .8fr) minmax(0, 1.2fr); gap: clamp(60px, 10vw, 150px); align-items: start; }
  .contact-copy h2 { max-width: 12ch; margin-top: 20px; color: var(--deep-fg); }
  .contact-copy > p:last-child { margin-top: 24px; color: var(--deep-muted); }
  .contact-section .section-kicker { color: oklch(0.72 0.075 55); }
  .contact-links { border-top: 1px solid var(--deep-fg); }
  .contact-links a {
    min-height: 68px;
    display: grid;
    grid-template-columns: minmax(125px, .45fr) minmax(0, 1fr);
    gap: 24px;
    align-items: center;
    border-bottom: 1px solid color-mix(in oklch, var(--deep-fg), transparent 76%);
    text-decoration: none;
    transition: background-color .2s ease, color .2s ease, padding .2s ease;
  }

  .contact-links span { color: var(--deep-muted); }
  .contact-links strong { min-width: 0; font-size: 14px; font-weight: 550; overflow-wrap: anywhere; }
  .contact-links a:hover { padding-inline: 12px; background: var(--deep-fg); color: var(--deep); }
  .contact-links a:hover span { color: var(--deep); }
  .contact-links a:active { transform: translateY(1px); }
  .contact-arrival .contact-links { animation: contact-mark .72s var(--ease); }
  @keyframes contact-mark { 0%, 100% { transform: translateX(0); } 45% { transform: translateX(6px); } }

  .site-footer { background: var(--deep); color: var(--deep-muted); border-top: 1px solid color-mix(in oklch, var(--deep-fg), transparent 76%); }
  .site-footer > div { min-height: 78px; display: flex; justify-content: space-between; gap: 24px; align-items: center; font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; }
  .site-footer a { min-height: 44px; display: inline-flex; align-items: center; color: var(--deep-fg); text-decoration: none; }
  .site-footer a:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }

  .reveal-item { opacity: 0; transform: translateY(16px); }
  .reveal-item.is-visible { opacity: 1; transform: none; transition: opacity .58s var(--ease), transform .58s var(--ease); }
}

@layer responsive {
  @media (max-width: 1120px) {
    .header-inner { grid-template-columns: 180px auto minmax(105px, .24fr); gap: 18px; }
    .site-nav { gap: 16px; }
    .section-heading { grid-template-columns: 110px minmax(0, 1fr) minmax(240px, .5fr); gap: 34px; }
    .format-item { grid-template-columns: 62px minmax(190px, .65fr) minmax(140px, .4fr) minmax(280px, 1fr); gap: 28px; }
    .impact-item { grid-template-columns: 150px minmax(210px, .8fr) minmax(270px, 1fr) 34px; gap: 28px; }
  }

  @media (max-width: 900px) {
    .header-inner { grid-template-columns: 1fr auto; gap: 16px; }
    .menu-toggle { display: inline-flex; }
    .site-nav {
      position: absolute;
      inset: calc(100% + 1px) 0 auto;
      display: grid;
      gap: 0;
      padding: 12px var(--gutter) calc(18px + env(safe-area-inset-bottom));
      background: var(--bg);
      border-bottom: 1px solid var(--border);
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
      transform: translateY(-8px);
      overscroll-behavior: contain;
      transition: opacity .2s ease, transform .2s ease, visibility 0s linear .2s;
    }

    .site-nav.is-open { opacity: 1; visibility: visible; pointer-events: auto; transform: none; transition-delay: 0s; }
    .site-nav a { border-bottom: 1px solid var(--border); }
    .site-nav a::after { display: none; }
    .site-nav .mobile-cv { display: flex !important; border-bottom: 0; }
    .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(210px, .42fr); gap: 34px; }
    .format-item { grid-template-columns: 56px minmax(0, .78fr) minmax(0, 1.22fr); }
    .format-economics { grid-column: 2; }
    .format-body { grid-column: 3; grid-row: 1 / span 2; }
    .expertise-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .operator-layout { grid-template-columns: 1fr; gap: 52px; }
    .operator-copy h2 { max-width: 16ch; }
    .impact-item { grid-template-columns: 140px minmax(0, .75fr) minmax(0, 1.25fr) 32px; }
    .fit-layout { grid-template-columns: 1fr; gap: 48px; }
    .fit-copy h2 { max-width: 15ch; }
  }

  @media (max-width: 760px) {
    :root { --gutter: clamp(18px, 5vw, 28px); --section-space: 76px; }
    h1 { font-size: clamp(2.1rem, 10.5vw, 4.75rem); }
    h2 { font-size: clamp(2.25rem, 10vw, 3.5rem); }
    .hero { padding-top: 36px; }
    .hero-grid { grid-template-columns: minmax(0, 1fr) 128px; gap: 20px; align-items: start; }
    .hero-copy h1 { max-width: 100%; }
    .hero-lead, .hero-operator-note, .hero-actions { grid-column: 1 / -1; }
    .hero-copy { display: contents; }
    .hero-copy > .eyebrow { grid-column: 1; grid-row: 1; }
    .hero-copy > h1 { grid-column: 1 / -1; grid-row: 2; margin-top: 10px; }
    .hero-portrait { grid-column: 2; grid-row: 1; width: 128px; }
    .hero-portrait figcaption { display: none; }
    .hero-lead { margin-top: 26px; }
    .method-rail { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .method-rail li { border-bottom: 1px solid var(--border); }
    .method-rail li:nth-child(2) { padding-right: 0; border-right: 0; }
    .method-rail li:nth-child(3) { padding-left: 0; border-bottom: 0; }
    .method-rail li:nth-child(4) { padding-right: 0; border-right: 0; border-bottom: 0; }
    .hero-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .hero-metric, .hero-metric:first-child, .hero-metric:last-child { padding: 15px 14px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
    .hero-metric:nth-child(even) { padding-right: 0; border-right: 0; }
    .hero-metric:nth-child(odd) { padding-left: 0; }
    .hero-metric:nth-last-child(-n+2) { border-bottom: 0; }
    .section-heading { display: block; }
    .section-heading h2 { margin-top: 24px; }
    .section-heading > p { margin-top: 28px; }
    .problem-item { grid-template-columns: 54px 1fr; gap: 18px; }
    .problem-copy { grid-column: 2; }
    .problem-statement { margin-top: 16px; }
    .format-item { grid-template-columns: 44px minmax(0, 1fr); gap: 18px; }
    .format-title, .format-economics, .format-body { grid-column: 2; grid-row: auto; }
    .format-economics { margin-top: 4px; }
    .format-body { margin-top: 10px; }
    .principle { grid-template-columns: 42px minmax(150px, .65fr) minmax(0, 1.35fr); }
    .impact-item { grid-template-columns: 1fr 32px; gap: 18px; align-items: start; }
    .impact-label, .impact-item h3, .impact-results { grid-column: 1; }
    .impact-arrow { grid-column: 2; grid-row: 1 / span 3; }
    .impact-results { margin-top: 6px; }
    .contact-layout { grid-template-columns: 1fr; gap: 48px; }
    .contact-copy h2 { max-width: 15ch; }
  }

  @media (max-width: 520px) {
    .header-inner { min-height: 64px; }
    .brand { font-size: 14px; }
    .cv-link span { display: none; }
    .menu-label { display: none; }
    .hero-grid { grid-template-columns: minmax(0, 1fr) clamp(96px, 27vw, 112px); gap: 14px; }
    .hero-portrait { width: 100%; }
    .eyebrow { margin-bottom: 14px; font-size: 10px; }
    .hero-lead { font-size: 1rem; }
    .hero-actions { display: grid; grid-template-columns: 1fr; }
    .button { width: 100%; }
    .hero-metric dt { font-size: clamp(1.48rem, 7.6vw, 1.92rem); }
    .problem-item { grid-template-columns: 36px 1fr; }
    .expertise-grid { grid-template-columns: 1fr; }
    .expertise-item { min-height: 0; padding: 24px 0; border-right: 0; }
    .principle { grid-template-columns: 36px 1fr; gap: 10px 14px; }
    .principle p { grid-column: 2; }
    .impact-results { grid-template-columns: 1fr; gap: 12px; }
    .situation { grid-template-columns: 36px 1fr; gap: 12px; }
    .contact-links a { grid-template-columns: 1fr; gap: 4px; padding-block: 14px; }
    .contact-links a:hover { padding-inline: 8px; }
    .site-footer > div { min-height: 110px; flex-direction: column; align-items: flex-start; justify-content: center; gap: 4px; }
  }

  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
    .reveal-item { opacity: 1; transform: none; }
  }
}

/* Shared shell compatibility overrides. */
body .button { min-height: 48px; padding: 12px 18px; }
body .contact-copy h2 { color: var(--deep-fg); }