:root {
    --ease: cubic-bezier(.22, .61, .36, 1);
    --fast: .24s;
    --slow: .6s;
    --r-sm: 4px;
    --r-md: 9px;
    --r-pill: 999px;
    --bone: #F7F6F2;
    --paper: #FFFFFF;
    --ink: #0C100F;
    --ink-soft: #454F4D;
    --ink-faint: #68716F;
    --hair: #DFDDD6;
    --hair-soft: #ECEAE4;
    --accent: #11453B;
    --accent-lift: #17594B;
    --tint: #E7EEEA;
    --dark-bg: #0C100F;
    --dark-surface: #141A18;
    --dark-text: #F0EEE8;
    --dark-soft: #9BA5A2;
    --dark-hair: #232B29;
    --dark-accent: #8ACDB8;
    --on-accent: #F7F6F2;
    --warn: #8E4E12;
    --warn-tint: #F6EADD;
    --focus: #11453B;
  }
  /* Single theme by design: the bone and ink palette holds on any host ground. */
  :root { color-scheme: light; }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    background: var(--bone);
    color: var(--ink);
    font-family: "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16.5px;
    font-weight: 400;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  a { color: inherit; }
  :focus-visible { outline: 2px solid var(--focus); outline-offset: 4px; border-radius: 1px; }
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; }
  }

  /* ---------- scroll hairline ---------- */
  #progress {
    position: fixed; top: env(safe-area-inset-top, 0px); left: 0; height: 2px; width: 0%;
    background: var(--accent); z-index: 80; transition: width .18s var(--ease);
  }

  /* ---------- shell ---------- */
  .wrap { width: 100%; max-width: 1140px; margin: 0 auto; padding-inline: 22px; }
  .measure { max-width: 68ch; }

  header.bar {
    position: sticky; top: env(safe-area-inset-top, 0px); z-index: 60;
    background: color-mix(in srgb, var(--bone) 88%, transparent);
    backdrop-filter: saturate(140%) blur(12px);
    border-bottom: 1px solid var(--hair-soft);
  }
  .bar-in { display: flex; align-items: center; gap: 18px; min-height: 66px; flex-wrap: wrap; padding-block: 10px; }
  .wordmark {
    font-family: "Newsreader", Georgia, serif; font-size: 22px; font-weight: 300;
    letter-spacing: -.01em; text-decoration: none; margin-right: auto; white-space: nowrap;
  }
  .wordmark em { font-style: italic; color: var(--accent); }
  nav.pages { display: flex; flex-wrap: wrap; gap: 2px; }
  nav.pages a {
    position: relative; font-size: 13.5px; color: var(--ink-soft); text-decoration: none;
    padding: 7px 11px; border-radius: 2px; transition: color var(--fast) var(--ease);
  }
  nav.pages a::after {
    content: ""; position: absolute; left: 11px; right: 11px; bottom: 3px; height: 1px;
    background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform var(--slow) var(--ease);
  }
  nav.pages a:hover { color: var(--ink); }
  nav.pages a:hover::after, nav.pages a[aria-current="page"]::after { transform: scaleX(1); }
  nav.pages a[aria-current="page"] { color: var(--ink); }
  .bar .cta {
    font-size: 13px; font-weight: 500; letter-spacing: .01em; white-space: nowrap;
    background: var(--ink); color: var(--bone); text-decoration: none;
    padding: 10px 16px; border-radius: var(--r-pill); transition: transform var(--fast) var(--ease), opacity var(--fast) var(--ease);
  }
  .bar .cta:hover { transform: translateY(-1px); opacity: .9; }

  /* ---------- type ---------- */
  h1, h2, h3, .display { font-family: "Newsreader", Georgia, serif; font-weight: 300; margin: 0; text-wrap: balance; }
  h1 { font-size: clamp(2.55rem, 6.6vw, 4.45rem); line-height: 1.02; letter-spacing: -.022em; }
  h2 { font-size: clamp(1.75rem, 3.6vw, 2.6rem); line-height: 1.12; letter-spacing: -.015em; }
  h3 { font-family: "Archivo", sans-serif; font-weight: 500; font-size: 1.02rem; line-height: 1.35; letter-spacing: -.005em; }
  p { margin: 0; }
  .lede { font-size: clamp(1.06rem, 1.5vw, 1.22rem); line-height: 1.62; color: var(--ink-soft); max-width: 50ch; }
  .body-soft { color: var(--ink-soft); font-size: 15.5px; }
  .label {
    font-size: 10.5px; font-weight: 600; letter-spacing: .17em; text-transform: uppercase;
    color: var(--ink-faint);
  }
  .label.accent { color: var(--accent); }
  .serif-em { font-style: italic; }

  /* ---------- sections ---------- */
  section { border-top: 1px solid var(--hair); }
  .sec { padding-block: clamp(64px, 10vw, 140px); display: flex; flex-direction: column; gap: clamp(30px, 4vw, 52px); }
  .sec-head { display: flex; flex-direction: column; gap: 12px; max-width: 62ch; }
  .dark { background: var(--dark-bg); color: var(--dark-text); border-top-color: var(--dark-hair); }
  .dark .lede, .dark .body-soft { color: var(--dark-soft); }
  .dark .label { color: var(--dark-accent); }
  .dark h1, .dark h2, .dark h3 { color: var(--dark-text); }

  /* ---------- buttons ---------- */
  .row { display: flex; flex-wrap: wrap; gap: 12px 22px; align-items: center; }
  .btn {
    display: inline-flex; align-items: center; gap: 10px;
    background: var(--ink); color: var(--bone); text-decoration: none;
    font-size: 14.5px; font-weight: 500; padding: 14px 24px; border-radius: var(--r-pill);
    transition: transform var(--fast) var(--ease), box-shadow var(--fast) var(--ease);
  }
  .btn:hover { transform: translateY(-1px); box-shadow: 0 12px 30px -18px rgba(12,16,15,.5); }
  .btn .arw { transition: transform var(--fast) var(--ease); }
  .btn:hover .arw { transform: translateX(4px); }
  .dark .btn { background: var(--dark-accent); color: #07110E; }
  .link-under {
    text-decoration: none; font-size: 14.5px; color: var(--ink); position: relative; padding-bottom: 2px;
  }
  .link-under::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: currentColor;
    transform: scaleX(1); transform-origin: right; transition: transform var(--slow) var(--ease);
  }
  .link-under:hover::after { transform: scaleX(0); }
  .dark .link-under { color: var(--dark-text); }

  /* ---------- hero ---------- */
  .hero { border-top: 0; }
  .hero-in {
    padding-block: clamp(40px, 6vw, 84px) clamp(30px, 4vw, 56px);
    display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: clamp(28px, 5vw, 64px); align-items: center;
  }
  @media (max-width: 900px) { .hero-in { grid-template-columns: 1fr; } }
  .hero-copy { display: flex; flex-direction: column; gap: 22px; }
  h1 .em { font-style: italic; color: var(--accent); }

  /* stagger */
  .rise { animation: rise .9s var(--ease) both; }
  @keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
  .d1 { animation-delay: .05s; } .d2 { animation-delay: .14s; } .d3 { animation-delay: .23s; }
  .d4 { animation-delay: .32s; } .d5 { animation-delay: .42s; }

  /* ---------- spine figure ---------- */
  .figure-wrap { display: flex; flex-direction: column; gap: 10px; align-items: center; }
  .spine-stage { width: 100%; max-width: 300px; }
  .spine-stage svg { width: 100%; height: auto; display: block; overflow: visible; }
  .vert { fill: var(--ink); transition: fill .3s ease, opacity .3s ease; }
  .vlabel {
    fill: var(--ink-faint); font-family: "Archivo", sans-serif; font-size: 11px; font-weight: 600;
    letter-spacing: .14em; text-anchor: end; transition: fill .3s ease, opacity .3s ease;
  }
  .zone { cursor: pointer; }
  .zone .hit { fill: transparent; }
  .stage-dim .vert { opacity: .18; }
  .stage-dim .vlabel { opacity: .35; }
  .zone.on .vert { fill: var(--accent); opacity: 1; }
  .zone.on .vlabel { fill: var(--accent); opacity: 1; }
  .spine-caption {
    min-height: 66px; text-align: center; display: flex; flex-direction: column; gap: 6px;
    justify-content: flex-start;
  }
  .spine-caption .ttl { font-family: "Newsreader", Georgia, serif; font-size: 1.28rem; font-weight: 300; }
  .spine-caption .sub { font-size: 13.5px; color: var(--ink-faint); max-width: 34ch; margin: 0 auto; }
  .off-note { font-size: 13.5px; color: var(--ink-faint); }
  .off-note a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--hair); padding-bottom: 1px; }
  .off-note a:hover { border-bottom-color: var(--accent); color: var(--accent); }

  /* ---------- facts ---------- */
  .facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--hair); }
  .fact { padding: 24px 22px 6px 0; }
  .fact + .fact { padding-left: 22px; border-left: 1px solid var(--hair); }
  .fact dt { font-size: 10.5px; font-weight: 600; letter-spacing: .15em; text-transform: uppercase; color: var(--ink-faint); }
  .fact dd {
    margin: 10px 0 0; font-family: "Newsreader", Georgia, serif; font-weight: 300;
    font-size: clamp(1.9rem, 3.6vw, 2.6rem); line-height: 1; letter-spacing: -.02em;
    font-variant-numeric: tabular-nums;
  }
  .fact dd small { display: block; font-family: "Archivo", sans-serif; font-size: 12.5px; color: var(--ink-faint); margin-top: 10px; line-height: 1.45; letter-spacing: 0; }
  @media (max-width: 820px) {
    .facts { grid-template-columns: 1fr 1fr; }
    .fact:nth-child(odd) { padding-left: 0; border-left: 0; }
    .fact:nth-child(-n+2) { border-bottom: 1px solid var(--hair); padding-bottom: 20px; }
  }

  /* ---------- editorial list ---------- */
  .tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 34px; }
  @media (max-width: 860px) { .tiles { grid-template-columns: 1fr; gap: 0; } }
  a.tile, .tile {
    display: flex; flex-direction: column; gap: 11px; text-decoration: none;
    border-top: 1px solid var(--hair); padding: 26px 0 30px;
    transition: border-color var(--slow) var(--ease), background var(--slow) var(--ease);
  }
  a.tile:hover { border-top-color: var(--accent); }
  .tile .idx { font-size: 10.5px; font-weight: 600; letter-spacing: .15em; text-transform: uppercase; color: var(--accent); }
  .tile p { font-size: 15px; color: var(--ink-soft); }
  .tile .go { margin-top: auto; padding-top: 10px; font-size: 13.5px; color: var(--ink); display: inline-flex; gap: 8px; align-items: center; }
  a.tile .go .arw { transition: transform var(--fast) var(--ease); }
  a.tile:hover .go .arw { transform: translateX(5px); }

  /* ---------- two column prose ---------- */
  .split { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: clamp(28px, 4vw, 60px); }
  @media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
  .stack { display: flex; flex-direction: column; gap: 16px; }
  .stack-s { display: flex; flex-direction: column; gap: 8px; }

  ul.ticks { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
  ul.ticks li { border-top: 1px solid var(--hair); padding: 18px 0; font-size: 15.5px; color: var(--ink-soft); }
  ul.ticks li strong { color: var(--ink); font-weight: 500; }
  .dark ul.ticks li { border-top-color: var(--dark-hair); color: var(--dark-soft); }
  .dark ul.ticks li strong { color: var(--dark-text); }

  ol.steps { list-style: none; margin: 0; padding: 0; }
  ol.steps li {
    border-top: 1px solid var(--hair); padding: 26px 0;
    display: grid; grid-template-columns: 62px 1fr; gap: 18px; align-items: start;
  }
  @media (max-width: 620px) { ol.steps li { grid-template-columns: 1fr; gap: 8px; } }
  ol.steps .n { font-family: "Newsreader", Georgia, serif; font-size: 1.45rem; font-weight: 300; color: var(--accent); line-height: 1; padding-top: 2px; }
  ol.steps p { margin-top: 7px; font-size: 15px; color: var(--ink-soft); max-width: 60ch; }

  dl.plain { margin: 0; display: flex; flex-direction: column; }
  dl.plain > div { border-top: 1px solid var(--hair); padding: 16px 0; }
  dl.plain dt { font-size: 10.5px; font-weight: 600; letter-spacing: .15em; text-transform: uppercase; color: var(--ink-faint); }
  dl.plain dd { margin: 7px 0 0; font-size: 15.5px; }
  .dark dl.plain > div { border-top-color: var(--dark-hair); }
  .dark dl.plain dt { color: var(--dark-soft); }

  /* ---------- quotes ---------- */
  .quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 34px; }
  @media (max-width: 880px) { .quotes { grid-template-columns: 1fr; gap: 28px; } }
  figure.q { margin: 0; display: flex; flex-direction: column; gap: 14px; }
  figure.q blockquote {
    margin: 0; font-family: "Newsreader", Georgia, serif; font-weight: 300;
    font-size: 1.24rem; line-height: 1.42; letter-spacing: -.01em; color: var(--dark-text);
  }
  figure.q figcaption { font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--dark-soft); }
  .rating-line { display: flex; flex-wrap: wrap; align-items: baseline; gap: 14px; }
  .rating-num { font-family: "Newsreader", Georgia, serif; font-size: clamp(3rem, 8vw, 4.6rem); font-weight: 200; line-height: 1; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }

  /* ---------- chips, faq, tk ---------- */
  .chips { display: flex; flex-wrap: wrap; gap: 8px; }
  .chip { font-size: 12.5px; border: 1px solid var(--hair); padding: 7px 13px; border-radius: 999px; color: var(--ink-soft); }
  details.faq { border-top: 1px solid var(--hair); }
  details.faq:last-of-type { border-bottom: 1px solid var(--hair); }
  details.faq summary {
    cursor: pointer; list-style: none; padding: 20px 0; font-size: 16px; font-weight: 500;
    display: flex; justify-content: space-between; gap: 20px; align-items: baseline;
  }
  details.faq summary::-webkit-details-marker { display: none; }
  details.faq summary .pm { color: var(--accent); font-size: 18px; line-height: 1; transition: transform var(--slow) var(--ease); }
  details.faq[open] summary .pm { transform: rotate(45deg); }
  details.faq .ans { padding-bottom: 20px; font-size: 15px; color: var(--ink-soft); max-width: 64ch; }
  .tk {
    display: inline-block; font-size: 10px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
    color: var(--accent); background: var(--tint); border-radius: 999px; padding: 3px 9px; vertical-align: middle;
  }

  address.addr { font-style: normal; font-size: 16px; line-height: 1.75; }


  /* ---------- page heads ---------- */
  .page-head {
    padding-block: clamp(56px, 9vw, 116px) clamp(34px, 5vw, 60px);
    display: flex; flex-direction: column; gap: 24px;
  }

  /* ---------- photo slots ---------- */
  .shot {
    margin: 0; position: relative; overflow: hidden;
    background:
      repeating-linear-gradient(-45deg, transparent 0 13px, color-mix(in srgb, var(--accent) 5%, transparent) 13px 14px),
      var(--tint);
    border: 1px solid var(--hair); border-radius: var(--r-md);
    display: flex; align-items: flex-end; padding: 18px; max-width: 100%;
  }
  .shot span {
    font-size: 10.5px; font-weight: 600; letter-spacing: .15em; text-transform: uppercase;
    color: var(--accent); background: var(--bone); border-radius: 999px; padding: 6px 12px;
  }
  .shot.portrait { aspect-ratio: 4 / 5; }
  .shot.wide { aspect-ratio: 3 / 2; }
  .shot.tall { aspect-ratio: 3 / 4; }

  .portrait-split { display: grid; grid-template-columns: minmax(0,.62fr) minmax(0,1fr); gap: clamp(28px, 5vw, 72px); align-items: center; }
  .office-split { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,.9fr); gap: clamp(28px, 5vw, 72px); align-items: center; }
  .visit-split { display: grid; grid-template-columns: minmax(0,.58fr) minmax(0,1fr); gap: clamp(28px, 5vw, 72px); align-items: start; }
  .symptom-split { display: grid; grid-template-columns: minmax(0,.8fr) minmax(0,1fr); gap: clamp(26px, 5vw, 72px); align-items: start; }
  @media (max-width: 860px) {
    .portrait-split, .office-split, .visit-split, .symptom-split { grid-template-columns: 1fr; }
    .shot.portrait, .shot.tall { max-width: 340px; }
  }
  ol.steps.flush li:first-child { border-top: 0; padding-top: 0; }
  .booking-line { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: clamp(24px, 4vw, 56px); align-items: end; }
  @media (max-width: 760px) { .booking-line { grid-template-columns: 1fr; align-items: start; } }

  /* ---------- interactive modules ---------- */
  .lab {
    border: 1px solid var(--hair); border-radius: var(--r-md); background: var(--paper);
    padding: clamp(22px, 3.2vw, 36px); display: flex; flex-direction: column; gap: 26px;
  }
  .lab-grid { display: grid; grid-template-columns: minmax(0,.86fr) minmax(0,1.14fr); gap: clamp(26px, 4vw, 52px); align-items: center; }
  @media (max-width: 860px) { .lab-grid { grid-template-columns: 1fr; } }
  .lab-fig { display: flex; justify-content: center; }
  .lab-fig svg { width: 100%; height: auto; display: block; overflow: visible; }
  .ctrl { display: flex; flex-direction: column; gap: 6px; }
  .ctrl-row { display: flex; justify-content: space-between; gap: 12px; font-size: 12px; color: var(--ink-faint); }
  .ctrl-row .mid { color: var(--accent); font-weight: 600; letter-spacing: .04em; }
  input[type="range"] {
    -webkit-appearance: none; appearance: none; width: 100%; background: transparent;
    height: 28px; margin: 0; cursor: pointer;
  }
  input[type="range"]::-webkit-slider-runnable-track { height: 2px; background: var(--hair); border-radius: 2px; }
  input[type="range"]::-moz-range-track { height: 2px; background: var(--hair); border-radius: 2px; }
  input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%;
    background: var(--accent); border: 0; margin-top: -8px;
  }
  input[type="range"]::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: var(--accent); border: 0; }
  .readout { display: flex; flex-direction: column; gap: 4px; }
  .readout .big {
    font-family: "Newsreader", Georgia, serif; font-weight: 200;
    font-size: clamp(3.1rem, 8vw, 4.6rem); line-height: 1; letter-spacing: -.03em;
    font-variant-numeric: tabular-nums;
  }
  .readout .unit { font-size: 14px; color: var(--ink-faint); }
  .readout .unit b { color: var(--ink); font-weight: 500; }
  .note { font-size: 12.5px; color: var(--ink-faint); line-height: 1.55; max-width: 76ch; }

  /* head tilt figure */
  .fig-line { stroke: var(--ink); fill: none; stroke-width: 2; stroke-linecap: round; }
  .fig-head { fill: var(--ink); }
  .fig-ghost { stroke: var(--hair); stroke-width: 1.5; stroke-dasharray: 3 5; fill: none; }
  .fig-arc { stroke: var(--accent); stroke-width: 1.5; fill: none; }
  .fig-load { fill: var(--accent); opacity: .16; }

  /* injury loop */
  .loop-ring { stroke: var(--hair); stroke-width: 1.5; fill: none; }
  .loop-arrowhead { fill: var(--ink-faint); }
  .loop-node .dot { fill: var(--paper); stroke: var(--ink); stroke-width: 1.5; transition: fill .25s ease, stroke .25s ease, r .25s ease; }
  .loop-node .hit { fill: transparent; }
  .loop-node text { fill: var(--ink-soft); font-family: "Archivo", sans-serif; font-size: 11.5px; font-weight: 500; transition: fill .25s ease; }
  .loop-node { cursor: pointer; }
  .loop-node.on .dot { fill: var(--accent); stroke: var(--accent); r: 11; }
  .loop-node.on text { fill: var(--accent); }
  .loop-runner { fill: var(--accent); }
  .loop-cut { stroke: var(--accent); stroke-width: 2; stroke-linecap: round; opacity: 0; transition: opacity .4s ease; }
  .loop-broken .loop-cut { opacity: 1; }
  .loop-broken .loop-ring { stroke-dasharray: 5 7; }

  /* ---------- pages + transition ---------- */
  .page { display: block; }
  .page[hidden] { display: none; }
  .page.enter { animation: pageIn .5s cubic-bezier(.16,.72,.24,1) both; }
  @keyframes pageIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

  /* ---------- footer ---------- */
  footer { background: var(--dark-bg); color: var(--dark-soft); }
  .foot-in { padding-block: 56px 40px; display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 34px; }
  @media (max-width: 820px) { .foot-in { grid-template-columns: 1fr; gap: 28px; } }
  footer h4 { font-size: 10.5px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--dark-accent); margin: 0 0 14px; }
  footer a { color: var(--dark-text); text-decoration: none; font-size: 15px; }
  footer a:hover { color: var(--dark-accent); }
  footer .addr { color: var(--dark-text); }
  footer .mark { font-family: "Newsreader", Georgia, serif; font-size: 26px; font-weight: 300; color: var(--dark-text); margin-bottom: 14px; display: block; }
  footer .mark em { font-style: italic; color: var(--dark-accent); }
  .legal { border-top: 1px solid var(--dark-hair); padding-block: 20px 36px; font-size: 12.5px; color: var(--dark-soft); display: flex; flex-wrap: wrap; gap: 8px 26px; }


  /* ---------- accessibility + motion polish ---------- */
  .skip {
    position: absolute; left: 12px; top: 8px; z-index: 200;
    background: var(--ink); color: var(--bone); text-decoration: none;
    padding: 11px 18px; border-radius: var(--r-pill); font-size: 14px; font-weight: 500;
    transform: translateY(-160%); transition: transform var(--fast) var(--ease);
  }
  .skip:focus-visible { transform: translateY(0); }

  .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;
  }

  /* every interactive target clears 44px on touch */
  @media (pointer: coarse) {
    nav.pages a { padding: 12px 12px; }
    .bar .cta { padding: 13px 20px; }
    footer a, .link-under { padding-block: 6px; display: inline-block; }
    details.faq summary { padding: 22px 0; }
  }

  input[type="range"] { touch-action: pan-y; }
  input[type="range"]:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 4px var(--tint), 0 0 0 6px var(--accent); }
  input[type="range"]:focus-visible::-moz-range-thumb { box-shadow: 0 0 0 4px var(--tint), 0 0 0 6px var(--accent); }
  .zone:focus-visible, .loop-node:focus-visible { outline: 2px solid var(--focus); outline-offset: 4px; }

  /* ---------- phone ---------- */
  @media (max-width: 620px) {
    body { font-size: 16px; }
    .bar-in { min-height: 58px; gap: 10px; }
    nav.pages { order: 3; width: 100%; margin-top: 2px; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 4px; }
    nav.pages::-webkit-scrollbar { display: none; }
    nav.pages { scrollbar-width: none;
      -webkit-mask-image: linear-gradient(to right, #000 0, #000 86%, transparent 100%);
      mask-image: linear-gradient(to right, #000 0, #000 86%, transparent 100%); }
    nav.pages a { white-space: nowrap; }
    .wordmark { font-size: 20px; }
    h1 { font-size: clamp(2.2rem, 10vw, 2.9rem); }
    .hero-in { gap: 34px; }
    .spine-stage { max-width: 186px; }
    .lab { padding: 20px 16px; }
    .lab-fig { max-width: 100% !important; }
    .rating-num { font-size: 3.2rem; }
    .quotes { gap: 26px; }
    .fact dd { font-size: 1.9rem; }
    .readout .big { font-size: 3rem; }
  }

  /* ---------- pain finder ---------- */
  .finder {
    display: grid; grid-template-columns: minmax(0, .5fr) minmax(0, 1fr);
    gap: clamp(26px, 5vw, 68px); align-items: start;
  }
  @media (max-width: 860px) { .finder { grid-template-columns: 1fr; gap: 28px; } }
  .finder .spine-stage { max-width: 260px; margin: 0 auto; width: 100%; }
  .finder-panel {
    display: flex; flex-direction: column; gap: 22px;
    border-left: 2px solid var(--accent); padding-left: clamp(20px, 3vw, 32px);
    min-height: 330px;
  }
  @media (max-width: 860px) { .finder-panel { min-height: 0; } }
  .finder-panel h3 {
    font-family: "Newsreader", Georgia, serif; font-weight: 300;
    font-size: clamp(1.7rem, 3.4vw, 2.3rem); line-height: 1.1; letter-spacing: -.015em;
  }
  ul.says { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
  ul.says li {
    font-size: 14px; color: var(--ink-soft);
    border: 1px solid var(--hair); border-radius: var(--r-pill); padding: 7px 14px;
    background: var(--paper);
  }

  /* ---------- what it usually is ---------- */
  .dx-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--hair); border: 1px solid var(--hair); border-radius: var(--r-md); overflow: hidden; }
  @media (max-width: 800px) { .dx-grid { grid-template-columns: 1fr; } }
  .dx { background: var(--paper); padding: clamp(22px, 2.6vw, 30px); display: flex; flex-direction: column; gap: 16px; }
  .dx h3 { font-size: 1.1rem; font-weight: 500; letter-spacing: -.005em; }
  .dx dl { margin: 0; display: flex; flex-direction: column; gap: 13px; }
  .dx dt {
    font-size: 10px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase;
    color: var(--accent); margin-bottom: 4px;
  }
  .dx dd { margin: 0; font-size: 14.5px; line-height: 1.55; color: var(--ink-soft); }
  .dx dl > div:last-child dd { color: var(--ink); }