/* ==========================================================================
   RMDS — site.css
   Requires tokens.css. No raw hex / px / ms values below except 1px hairlines
   and geometry that is genuinely geometric.
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--canvas);
  color: var(--text-body);
  font-family: var(--font-ui);
  font-size: var(--t-body);
  line-height: var(--lh-body);
  font-weight: 350;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--ocean-600); text-decoration: none; }
a:hover { color: var(--ox-700); }

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: var(--r-xs);
}

.skip {
  position: absolute; left: var(--s-4); top: calc(var(--s-4) * -6);
  background: var(--n-0); color: var(--text-display);
  padding: var(--s-3) var(--s-5); border-radius: var(--r-pill);
  z-index: var(--z-overlay); transition: top var(--m-fast) var(--ease-precision);
}
.skip:focus { top: var(--s-4); }

/* --- Typography primitives ------------------------------------------------ */

.display, .h1, .h2, .h3, .h4 {
  font-family: var(--font-display);
  color: var(--text-display);
  font-weight: 400;
  letter-spacing: var(--track-display);
  margin: 0;
}
.display { font-size: var(--t-display-xl); line-height: var(--lh-display); }
.display-xxl { font-size: var(--t-display-xxl); line-height: var(--lh-display); }
.h1 { font-size: var(--t-h1); line-height: var(--lh-heading); }
.h2 { font-size: var(--t-h2); line-height: var(--lh-heading); }
.h3 { font-size: var(--t-h3); line-height: var(--lh-heading); }
.h4 { font-size: var(--t-h4); line-height: var(--lh-heading); font-weight: 500; }

.eyebrow {
  font-family: var(--font-ui);
  font-size: var(--t-micro);
  font-weight: 600;
  letter-spacing: var(--track-eyebrow);
  text-transform: uppercase;
  color: var(--ox-700);
  margin: 0 0 var(--s-4);
  display: flex; align-items: center; gap: var(--s-3);
}
.eyebrow::before {
  content: ""; width: var(--s-6); height: 1px;
  background: currentColor; opacity: var(--o-60); flex: none;
}
.eyebrow-cool { color: var(--ocean-600); }
.eyebrow-onDark { color: var(--ox-500); }

.lede {
  font-size: var(--t-body-l);
  color: var(--text-body);
  max-width: var(--measure);
  margin: var(--s-5) 0 0;
}
p { max-width: var(--measure); }
.prose p + p { margin-top: var(--s-4); }

.muted { color: var(--text-muted); }
.caption {
  font-size: var(--t-caption); color: var(--text-muted);
  letter-spacing: .01em;
}

/* --- Layout --------------------------------------------------------------- */

.wrap {
  width: 100%; max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--margin-desktop);
}
.wrap-narrow { max-width: var(--container-narrow); }

.chapter { padding-block: var(--s-12); position: relative; }
.chapter-tight { padding-block: var(--s-10); }
.ground-warm { background: var(--ground-warm); }
.ground-cool { background: var(--ground-cool); }
.ground-white { background: var(--surface); }
.ground-dark { background: var(--ground-dark); color: var(--text-onDarkMuted); }
.ground-dark .h2, .ground-dark .h3, .ground-dark .display { color: var(--text-onDark); }

.split {
  display: grid; gap: var(--s-10);
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
}
.split-editorial { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); }

/* --- Buttons -------------------------------------------------------------- */

.btn {
  display: inline-flex; align-items: center; gap: var(--s-3);
  font-family: var(--font-ui);
  font-size: var(--t-body-s); font-weight: 500;
  padding: var(--s-3) var(--s-6);
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background-color var(--m-normal) var(--ease-human),
    color var(--m-normal) var(--ease-human),
    border-color var(--m-normal) var(--ease-human),
    transform var(--m-normal) var(--ease-human),
    box-shadow var(--m-normal) var(--ease-human);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary { background: var(--ox-700); color: var(--n-0); box-shadow: var(--shadow-1); }
.btn-primary:hover { background: var(--ox-600); color: var(--n-0); box-shadow: var(--shadow-2); }

.btn-secondary { background: var(--ocean-800); color: var(--n-0); }
.btn-secondary:hover { background: var(--ocean-700); color: var(--n-0); }

.btn-ghost { background: transparent; color: var(--ocean-800); border-color: var(--line-soft); }
.btn-ghost:hover { background: var(--n-0); border-color: var(--ocean-300); color: var(--ocean-800); }

.btn-onDark { background: transparent; color: var(--text-onDark); border-color: var(--line-onDark); }
.btn-onDark:hover { background: rgba(255,255,255,.06); color: var(--n-0); }

/* Editorial link — the "read on" affordance, not a button */
.link-editorial {
  display: inline-flex; align-items: center; gap: var(--s-3);
  font-size: var(--t-caption); font-weight: 600;
  letter-spacing: .06em; text-transform: uppercase;
  color: var(--ocean-800);
  padding-block: var(--s-2);
  border-bottom: 1px solid var(--line-soft);
  transition: color var(--m-normal) var(--ease-human),
              border-color var(--m-normal) var(--ease-human),
              gap var(--m-normal) var(--ease-human);
}
.link-editorial::after { content: "→"; transition: transform var(--m-normal) var(--ease-human); }
.link-editorial:hover { color: var(--ox-700); border-color: var(--ox-300); gap: var(--s-4); }
.link-editorial:hover::after { transform: translateX(2px); }
.ground-dark .link-editorial { color: var(--text-onDark); border-color: var(--line-onDark); }
.ground-dark .link-editorial:hover { color: var(--ox-500); border-color: var(--ox-500); }

/* --- Card family ---------------------------------------------------------- */
/* Thin border + soft gradient + micro shadow + glass top edge. No 20px radius,
   no drop-shadow blocks. */

.card {
  position: relative;
  background:
    linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.62)),
    var(--surface);
  border: 1px solid var(--line-hair);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-1);
  padding: var(--s-6);
  transition: transform var(--m-normal) var(--ease-human),
              box-shadow var(--m-normal) var(--ease-human),
              border-color var(--m-normal) var(--ease-human);
}
.card::before {                      /* glass top edge */
  content: ""; position: absolute; inset: 0 var(--s-5) auto; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.95), transparent);
  border-radius: var(--r-pill);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-2); border-color: var(--ocean-200); }

/* --- Icon system: outline, single stroke family --------------------------- */
.icon { width: var(--s-6); height: var(--s-6); stroke: var(--ocean-700); fill: none;
        stroke-width: 1.25; stroke-linecap: round; stroke-linejoin: round; }
.icon-lg { width: var(--s-7); height: var(--s-7); }
.ground-dark .icon { stroke: var(--ocean-400); }

/* --- Placeholder imagery -------------------------------------------------- */
.ph {
  position: relative; border-radius: var(--r-lg); overflow: hidden;
  background:
    linear-gradient(155deg, var(--ocean-200), var(--n-100) 55%, var(--ocean-100));
  border: 1px solid var(--line-hair);
}
.ph::after {
  content: attr(data-ph);
  position: absolute; inset: auto var(--s-4) var(--s-4) var(--s-4);
  font-size: var(--t-micro); letter-spacing: .1em; text-transform: uppercase;
  color: var(--ocean-700); opacity: var(--o-60);
}
.ph-portrait { aspect-ratio: 4 / 5; }
.ph-wide { aspect-ratio: 16 / 10; }
.ph-square { aspect-ratio: 1 / 1; }

/* ==========================================================================
   HEADER + NAVIGATION
   ========================================================================== */

.header {
  position: fixed; inset: 0 0 auto; z-index: var(--z-header);
  height: 5.5rem;                                   /* 88 */
  display: flex; align-items: center;
  border-bottom: 1px solid transparent;
  transition: height var(--m-gentle) var(--ease-editorial),
              background-color var(--m-gentle) var(--ease-editorial),
              border-color var(--m-gentle) var(--ease-editorial),
              box-shadow var(--m-gentle) var(--ease-editorial);
}
.header.is-scrolled {
  height: 4.5rem;                                   /* 72 */
  background: rgba(244, 244, 242, .84);
  backdrop-filter: blur(var(--blur-lg)) saturate(1.4);
  -webkit-backdrop-filter: blur(var(--blur-lg)) saturate(1.4);
  border-bottom-color: var(--line-hair);
  box-shadow: var(--shadow-1);
}
.header.is-open { background: var(--canvas); backdrop-filter: none; }

.header-inner {
  width: 100%; max-width: var(--container); margin-inline: auto;
  padding-inline: var(--margin-desktop);
  display: flex; align-items: center; gap: var(--s-6);
}

/* Logo — the mark is a single open curve, the same curve the thread uses */
.logo { display: flex; align-items: center; gap: var(--s-3); flex: none; }
.logo-mark { width: 2.25rem; height: 2.25rem; flex: none;
             transition: transform var(--m-gentle) var(--ease-editorial); }
.header.is-scrolled .logo-mark { transform: scale(.9); }
.logo-name {
  font-family: var(--font-display); font-size: var(--t-h4);
  color: var(--text-display); line-height: 1.05; letter-spacing: -.01em;
}
.logo-role {
  display: block; font-family: var(--font-ui); font-size: var(--t-micro);
  letter-spacing: .12em; text-transform: uppercase; color: var(--text-muted);
  font-weight: 500;
}

.nav { margin-inline: auto; }
.nav-list { display: flex; align-items: center; gap: var(--s-2);
            list-style: none; margin: 0; padding: 0; }
.nav-item { position: relative; }
.nav-link {
  display: inline-flex; align-items: center; gap: var(--s-2);
  font-size: var(--t-body-s); font-weight: 450; color: var(--text-display);
  padding: var(--s-3) var(--s-4);
  background: none; border: 0; font-family: inherit; cursor: pointer;
  border-radius: var(--r-pill);
  transition: color var(--m-fast) var(--ease-precision),
              background-color var(--m-fast) var(--ease-precision);
}
.nav-link:hover, .nav-item.is-active .nav-link { color: var(--ox-800); }
.nav-link[aria-expanded="true"] { background: rgba(255,255,255,.6); }
.nav-caret { width: .5rem; height: .5rem; stroke: currentColor; fill: none;
             stroke-width: 1.5; transition: transform var(--m-normal) var(--ease-human); }
.nav-link[aria-expanded="true"] .nav-caret { transform: rotate(180deg); }

.nav-actions { display: flex; align-items: center; gap: var(--s-4); flex: none; }

.lang {
  display: inline-flex; align-items: center; gap: var(--s-1);
  font-size: var(--t-caption); font-weight: 500; color: var(--text-muted);
}
.lang-btn {
  background: none; border: 0; font: inherit; cursor: pointer; color: inherit;
  padding: var(--s-1) var(--s-2); border-radius: var(--r-xs);
  transition: color var(--m-fast) var(--ease-precision);
}
.lang-btn[aria-pressed="true"] { color: var(--ox-800); font-weight: 700; }
.lang-sep { opacity: var(--o-40); }

/* --- Mega menu ------------------------------------------------------------ */

.mega {
  position: fixed; inset: 5.5rem 0 auto; z-index: var(--z-mega);
  background: rgba(244, 244, 242, .97);
  backdrop-filter: blur(var(--blur-xl)) saturate(1.5);
  -webkit-backdrop-filter: blur(var(--blur-xl)) saturate(1.5);
  border-bottom: 1px solid var(--line-hair);
  box-shadow: var(--shadow-overlay);
  opacity: 0; visibility: hidden; transform: translateY(calc(var(--s-2) * -1));
  transition: opacity var(--m-normal) var(--ease-editorial),
              transform var(--m-normal) var(--ease-editorial),
              visibility var(--m-normal);
}
.header.is-scrolled ~ .mega, .mega.is-compact { top: 4.5rem; }
.mega.is-open { opacity: 1; visibility: visible; transform: translateY(0); }

.mega-inner {
  width: 100%; max-width: var(--container); margin-inline: auto;
  padding: var(--s-8) var(--margin-desktop) var(--s-9);
  display: grid; gap: var(--s-8);
  grid-template-columns: repeat(3, minmax(0, 1fr)) minmax(0, .9fr);
}
.mega-col { border-top: 1px solid var(--line-hair); padding-top: var(--s-5); }
.mega-col-title {
  font-family: var(--font-display); font-size: var(--t-h4);
  color: var(--text-display); margin: 0 0 var(--s-4);
}
.mega-links { list-style: none; margin: 0; padding: 0;
              display: flex; flex-direction: column; gap: var(--s-1); }
.mega-links a {
  display: block; padding: var(--s-2) var(--s-3) var(--s-2) 0;
  color: var(--text-body); font-size: var(--t-body-s);
  border-left: var(--thread-w) solid transparent; padding-left: var(--s-4);
  margin-left: calc(var(--s-4) * -1);
  transition: color var(--m-fast) var(--ease-precision),
              border-color var(--m-fast) var(--ease-precision),
              padding-left var(--m-fast) var(--ease-precision);
}
.mega-links a:hover {
  color: var(--ox-800); border-left-color: var(--ox-700); padding-left: var(--s-5);
}
.mega-feature {
  background: var(--surface); border: 1px solid var(--line-hair);
  border-radius: var(--r-md); padding: var(--s-5); box-shadow: var(--shadow-1);
  display: flex; flex-direction: column; gap: var(--s-4);
}
.mega-feature .ph { border-radius: var(--r-sm); }

/* --- Mobile drawer -------------------------------------------------------- */

.burger {
  display: none; width: 2.75rem; height: 2.75rem; flex: none;
  align-items: center; justify-content: center;
  background: none; border: 1px solid var(--line-soft); border-radius: var(--r-pill);
  cursor: pointer;
}
.burger span {
  display: block; width: 1.125rem; height: 1px; background: var(--text-display);
  position: relative;
  transition: transform var(--m-normal) var(--ease-human),
              opacity var(--m-fast) var(--ease-precision);
}
.burger span::before, .burger span::after {
  content: ""; position: absolute; left: 0; width: 100%; height: 1px;
  background: var(--text-display);
  transition: transform var(--m-normal) var(--ease-human);
}
.burger span::before { top: -.375rem; }
.burger span::after  { top:  .375rem; }
.burger[aria-expanded="true"] span { background: transparent; }
.burger[aria-expanded="true"] span::before { transform: translateY(.375rem) rotate(45deg); }
.burger[aria-expanded="true"] span::after  { transform: translateY(-.375rem) rotate(-45deg); }

.drawer {
  position: fixed; inset: 0 0 0 auto; width: min(28rem, 100%);
  z-index: var(--z-drawer);
  background: var(--canvas);
  border-left: 1px solid var(--line-hair);
  box-shadow: var(--shadow-overlay);
  transform: translateX(100%);
  transition: transform var(--m-gentle) var(--ease-editorial);
  display: flex; flex-direction: column;
  overflow-y: auto;
  padding: 0 var(--margin-mobile) var(--s-9);
}
.drawer.is-open { transform: translateX(0); }
.drawer-scrim {
  position: fixed; inset: 0; z-index: calc(var(--z-drawer) - 1);
  background: rgba(15,33,46,.34);
  backdrop-filter: blur(var(--blur-xs));
  opacity: 0; visibility: hidden;
  transition: opacity var(--m-normal) var(--ease-human), visibility var(--m-normal);
}
.drawer-scrim.is-open { opacity: 1; visibility: visible; }

/* Drawer header — sticky, so the exit is always on screen no matter how
   far the menu is scrolled. On phones the drawer covers the burger, so
   this is the only way out. */
.drawer-head {
  position: sticky; top: 0; z-index: 1;
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s-4);
  margin-inline: calc(var(--margin-mobile) * -1);
  padding: var(--s-5) var(--margin-mobile);
  background: var(--canvas);
  border-bottom: 1px solid var(--line-hair);
}
.drawer-title {
  font-size: var(--t-micro); font-weight: 600;
  letter-spacing: var(--track-eyebrow); text-transform: uppercase;
  color: var(--text-muted);
}
.drawer-close {
  width: 2.75rem; height: 2.75rem; flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  background: none; color: var(--text-display);
  border: 1px solid var(--line-soft); border-radius: var(--r-pill);
  cursor: pointer;
  transition: color var(--m-fast) var(--ease-precision),
              border-color var(--m-fast) var(--ease-precision),
              background-color var(--m-fast) var(--ease-precision);
}
.drawer-close svg {
  width: 1rem; height: 1rem;
  stroke: currentColor; fill: none; stroke-width: 1.4; stroke-linecap: round;
}
.drawer-close:hover {
  color: var(--ox-700); border-color: var(--ox-300); background: var(--n-0);
}

.acc { border-top: 1px solid var(--line-hair); }
.drawer-head + .acc { border-top: 0; }
.acc:last-of-type { border-bottom: 1px solid var(--line-hair); }
.acc-btn {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  gap: var(--s-4); padding: var(--s-5) 0;
  background: none; border: 0; cursor: pointer;
  font-family: var(--font-display); font-size: var(--t-h4);
  color: var(--text-display); text-align: left;
}
.acc-sign { position: relative; width: var(--s-4); height: var(--s-4); flex: none; }
.acc-sign::before, .acc-sign::after {
  content: ""; position: absolute; inset: 50% 0 auto; height: 1px;
  background: var(--ocean-700);
  transition: transform var(--m-normal) var(--ease-human),
              background-color var(--m-normal) var(--ease-human);
}
.acc-sign::after { transform: rotate(90deg); }
.acc-btn[aria-expanded="true"] .acc-sign::after { transform: rotate(0deg); }
.acc-btn[aria-expanded="true"] .acc-sign::before,
.acc-btn[aria-expanded="true"] .acc-sign::after { background: var(--ox-700); }

.acc-panel {
  overflow: hidden; max-height: 0;
  transition: max-height var(--m-gentle) var(--ease-editorial);
}
.acc-panel ul { list-style: none; margin: 0; padding: 0 0 var(--s-5); }
.acc-panel a {
  display: block; padding: var(--s-3) 0 var(--s-3) var(--s-4);
  color: var(--text-body); font-size: var(--t-body-s);
  border-left: 1px solid var(--line-hair);
}
.acc-panel a:hover { color: var(--ox-800); border-left-color: var(--ox-700); }

.drawer-foot { margin-top: var(--s-8); display: flex; flex-direction: column; gap: var(--s-4); }
.drawer-foot .btn { justify-content: center; }

/* ==========================================================================
   NEURAL THREAD — the signature
   ========================================================================== */

.thread {
  position: fixed; left: var(--s-6); top: 0; height: 100vh; width: 3.5rem;
  z-index: var(--z-thread); pointer-events: none;
  opacity: 0; transition: opacity var(--m-story) var(--ease-editorial);
}
.thread.is-live { opacity: 1; }
.thread-track { stroke: var(--thread-idle); stroke-width: var(--thread-w); fill: none; }
.thread-live  { stroke: var(--thread-live); stroke-width: 1.25; fill: none;
                stroke-linecap: round; }
.thread-node {
  fill: var(--canvas); stroke: var(--thread-idle); stroke-width: var(--thread-w);
  transition: fill var(--m-normal) var(--ease-human),
              stroke var(--m-normal) var(--ease-human), r var(--m-normal) var(--ease-human);
}
.thread-node.is-on { fill: var(--ox-700); stroke: var(--ox-700); }
.thread-label {
  font-family: var(--font-ui); font-size: 8px; letter-spacing: .12em;
  text-transform: uppercase; fill: var(--text-muted);
  opacity: 0; transition: opacity var(--m-normal) var(--ease-human);
}
.thread-label.is-on { opacity: 1; fill: var(--ox-800); }
.thread-hit { pointer-events: auto; cursor: pointer; fill: transparent; }

/* Section-joint thread: a hairline that crosses between chapters */
.joint { display: block; width: 100%; height: var(--s-9); }
.joint path { fill: none; stroke: var(--thread-idle); stroke-width: var(--thread-w); }
.joint .joint-live { stroke: var(--ox-700); stroke-width: 1; opacity: var(--o-60); }

/* ==========================================================================
   HERO
   ========================================================================== */

.hero { position: relative; min-height: 100svh; display: flex; align-items: center;
        padding-block: 7rem var(--s-8); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero-bg-fill {
  position: absolute; inset: 0;
  background:
    radial-gradient(120% 90% at 8% 40%, var(--ocean-100), transparent 60%),
    linear-gradient(100deg, var(--n-100) 0%, var(--canvas) 42%, var(--ocean-50) 100%);
}
.tracto { position: absolute; inset: 0; width: 100%; height: 100%; }
.tracto path { fill: none; stroke: var(--ocean-800); stroke-width: .75;
               opacity: var(--o-8); }
.tracto .tracto-lit { stroke: var(--ox-700); opacity: var(--o-20); }

.hero-grid {
  position: relative; z-index: 1;
  display: grid; gap: var(--s-9);
  grid-template-columns: minmax(0, 1fr) minmax(0, .85fr);
  align-items: center;
}
.hero-title { font-size: var(--t-display-xxl); line-height: 1.08; margin: 0; }
.hero-title em { font-style: italic; color: var(--ocean-700); }
.hero-sub { margin-top: var(--s-6); font-size: var(--t-body-l); max-width: 34ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: var(--s-4); margin-top: var(--s-8); }


.hero-stats {
  position: relative; z-index: 1;
  margin-top: var(--s-10); padding-top: var(--s-6);
  border-top: 1px solid var(--line-hair);
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--s-6);
}
.stat-num {
  font-family: var(--font-display); font-size: var(--t-h1);
  color: var(--ocean-800); line-height: 1; font-variant-numeric: tabular-nums;
}
.stat-num .unit { color: var(--ox-700); }
.stat-label { font-size: var(--t-caption); color: var(--text-muted); margin-top: var(--s-2); }

.scroll-hint {
  position: absolute; left: 50%; bottom: var(--s-6); transform: translateX(-50%);
  z-index: 1; display: flex; flex-direction: column; align-items: center; gap: var(--s-2);
  font-size: var(--t-micro); letter-spacing: .14em; text-transform: uppercase;
  color: var(--text-muted);
}
.scroll-hint i {
  display: block; width: 1px; height: var(--s-7);
  background: linear-gradient(var(--line-soft), transparent);
  animation: hint var(--m-ambient) linear infinite;
}
@keyframes hint { 0%,100% { opacity: .3 } 50% { opacity: 1 } }

/* ==========================================================================
   CHAPTER: expertise — offset floating panels, deliberately not a card grid
   ========================================================================== */

.panels { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s-6); }
.panel { padding: var(--s-7) var(--s-6) var(--s-8); }
.panel:nth-child(1) { transform: translateY(0); }
.panel:nth-child(2) { transform: translateY(var(--s-7)); }
.panel:nth-child(3) { transform: translateY(calc(var(--s-7) * .4)); }
.panel-rule { width: var(--s-8); height: 1px; background: var(--ox-300); margin: var(--s-4) 0 var(--s-5); }
.panel-list { list-style: none; margin: var(--s-5) 0 0; padding: 0;
              display: flex; flex-direction: column; gap: var(--s-2); }
.panel-list li { font-size: var(--t-body-s); color: var(--text-muted);
                 padding-left: var(--s-4); position: relative; }
.panel-list li::before {
  content: ""; position: absolute; left: 0; top: .75em; width: var(--s-2); height: 1px;
  background: var(--ocean-300);
}

/* ==========================================================================
   CHAPTER: conditions — timeline, not cards
   ========================================================================== */

.timeline { position: relative; margin-top: var(--s-9); padding-left: var(--s-8); }
.timeline::before {
  content: ""; position: absolute; left: 0; top: var(--s-3); bottom: var(--s-3);
  width: var(--thread-w); background: var(--line-soft);
}
.tl-item { position: relative; padding-block: var(--s-6);
           display: grid; grid-template-columns: minmax(0, 16rem) minmax(0, 1fr);
           gap: var(--s-7); align-items: start; }
.tl-item + .tl-item { border-top: 1px solid var(--line-hair); }
.tl-item::before {
  content: ""; position: absolute; left: calc(var(--s-8) * -1); top: calc(var(--s-6) + .55em);
  width: var(--s-2); height: var(--s-2); border-radius: var(--r-pill);
  background: var(--canvas); border: 1px solid var(--ocean-300);
  transform: translateX(-45%);
  transition: background-color var(--m-normal) var(--ease-human),
              border-color var(--m-normal) var(--ease-human);
}
.tl-item:hover::before { background: var(--ox-700); border-color: var(--ox-700); }
.tl-region { font-family: var(--font-display); font-size: var(--t-h3);
             color: var(--text-display); }
.tl-region small { display: block; font-family: var(--font-ui); font-size: var(--t-micro);
                   letter-spacing: .12em; text-transform: uppercase; color: var(--text-muted);
                   margin-top: var(--s-2); }
.tl-tags { display: flex; flex-wrap: wrap; gap: var(--s-2); margin-top: var(--s-4); }
.tag {
  font-size: var(--t-caption); color: var(--ocean-800);
  border: 1px solid var(--line-hair); background: var(--surface);
  border-radius: var(--r-pill); padding: var(--s-1) var(--s-4);
  transition: border-color var(--m-fast) var(--ease-precision),
              color var(--m-fast) var(--ease-precision);
}
.tag:hover { border-color: var(--ox-300); color: var(--ox-800); }

/* ==========================================================================
   CHAPTER: techniques — horizontal cards with hairlines
   ========================================================================== */

.tech { display: flex; flex-direction: column; gap: var(--s-5); margin-top: var(--s-8); }
.tech-row {
  display: grid; grid-template-columns: var(--s-8) minmax(0, 1fr) minmax(0, 18rem);
  gap: var(--s-7); align-items: center;
  padding: var(--s-5) var(--s-6);
}
.tech-row .ph { border-radius: var(--r-sm); }
.tech-row .h4 { margin-bottom: var(--s-2); }

/* ==========================================================================
   CHAPTER: research — dark, connectome background
   ========================================================================== */

.research { position: relative; overflow: hidden; }
.connectome { position: absolute; inset: 0; width: 100%; height: 100%; opacity: var(--o-80); }
.connectome line { stroke: var(--ocean-400); stroke-width: .6; opacity: .28; }
.connectome circle { fill: var(--ocean-300); opacity: .55; }
.connectome circle.lit { fill: var(--ox-500); opacity: .9; }
.research-inner { position: relative; z-index: 1; }
.research-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
                 gap: var(--s-6); margin-top: var(--s-8); }
.research-card {
  border: 1px solid var(--line-onDark); border-radius: var(--r-md);
  background: rgba(255,255,255,.03); padding: var(--s-6);
  transition: background-color var(--m-normal) var(--ease-human),
              border-color var(--m-normal) var(--ease-human);
}
.research-card:hover { background: rgba(255,255,255,.06); border-color: var(--ox-500); }
.research-card .h4 { color: var(--text-onDark); }
.research-meta { font-size: var(--t-caption); color: var(--ocean-400);
                 font-variant-numeric: tabular-nums; letter-spacing: .04em; }

/* ==========================================================================
   CHAPTER: publications — magazine
   ========================================================================== */

.mag { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
       gap: var(--s-8); margin-top: var(--s-8); align-items: start; }
.mag-lead .ph { margin-bottom: var(--s-5); }
.mag-list { display: flex; flex-direction: column; }
.mag-item { padding-block: var(--s-5); border-top: 1px solid var(--line-hair);
            display: grid; grid-template-columns: 3.5rem minmax(0, 1fr); gap: var(--s-5); }
.mag-item:last-child { border-bottom: 1px solid var(--line-hair); }
.mag-year { font-family: var(--font-display); font-size: var(--t-body-l);
            color: var(--ox-700); font-variant-numeric: tabular-nums; }
.mag-title { font-family: var(--font-display); font-size: var(--t-h4);
             color: var(--text-display); line-height: var(--lh-heading); }
.mag-source { font-size: var(--t-caption); color: var(--text-muted); margin-top: var(--s-2); }

/* ==========================================================================
   CHAPTER: voices — masonry, no carousel
   ========================================================================== */

.voices { columns: 3; column-gap: var(--s-6); margin-top: var(--s-8); }
.voice { break-inside: avoid; margin-bottom: var(--s-6); }
.voice-stars { color: var(--ox-700); letter-spacing: .2em; font-size: var(--t-caption); }
.voice-text { font-family: var(--font-display); font-size: var(--t-body-l);
              color: var(--text-display); line-height: 1.5; margin: var(--s-4) 0 var(--s-5); }
.voice-who { font-size: var(--t-caption); color: var(--text-muted); }

/* ==========================================================================
   CHAPTER: contact — a consulting room, not a map
   ========================================================================== */

.rooms { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-6);
         margin-top: var(--s-8); }
.room { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 0;
        overflow: hidden; padding: 0; }
.room .ph { border-radius: 0; height: 100%; }
.room-body { padding: var(--s-6); }
.room-line { display: flex; gap: var(--s-3); align-items: flex-start;
             font-size: var(--t-body-s); margin-top: var(--s-3); }
.room-line .icon { width: var(--s-5); height: var(--s-5); flex: none; margin-top: .15em; }

.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-5); }
.field { display: flex; flex-direction: column; gap: var(--s-2); }
.field-full { grid-column: 1 / -1; }
.label { font-size: var(--t-caption); font-weight: 500; color: var(--text-display); }
.input, .textarea, .select {
  font: inherit; font-size: var(--t-body-s); color: var(--text-display);
  background: var(--surface);
  border: 1px solid var(--line-soft); border-radius: var(--r-sm);
  padding: var(--s-3) var(--s-4);
  transition: border-color var(--m-fast) var(--ease-precision),
              box-shadow var(--m-fast) var(--ease-precision);
}
.input:focus, .textarea:focus, .select:focus {
  outline: none; border-color: var(--ocean-500);
  box-shadow: 0 0 0 3px var(--ocean-200);
}
.textarea { min-height: 8rem; resize: vertical; }

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer { background: var(--ocean-950); color: var(--text-onDarkMuted);
          padding-block: var(--s-10) var(--s-7); }
.footer a { color: var(--text-onDarkMuted); }
.footer a:hover { color: var(--n-0); }
.footer-grid { display: grid; gap: var(--s-8);
               grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr)); }
.footer-title { font-size: var(--t-micro); letter-spacing: var(--track-eyebrow);
                text-transform: uppercase; color: var(--ocean-400);
                margin: 0 0 var(--s-4); font-weight: 600; }
.footer-list { list-style: none; margin: 0; padding: 0;
               display: flex; flex-direction: column; gap: var(--s-3); font-size: var(--t-body-s); }
.footer-sign { margin-top: var(--s-6); }
.footer-sign svg { width: 10rem; height: auto; }
.footer-bar { margin-top: var(--s-9); padding-top: var(--s-5);
              border-top: 1px solid var(--line-onDark);
              display: flex; flex-wrap: wrap; gap: var(--s-4);
              justify-content: space-between; font-size: var(--t-caption); }

/* ==========================================================================
   SCROLL CHOREOGRAPHY
   ========================================================================== */

/* Content is visible by default. It is hidden ONLY when the inline head
   script has confirmed that scripting and IntersectionObserver are live —
   otherwise no-JS, print, reader mode and full-page screenshots render a
   blank page. The animation is an enhancement, never a prerequisite. */
.js-reveal .reveal { opacity: 0; transform: translateY(var(--s-5)); }
.js-reveal .reveal.is-in {
  opacity: 1; transform: none;
  transition: opacity var(--m-story) var(--ease-editorial),
              transform var(--m-story) var(--ease-editorial);
}
.js-reveal .reveal-2.is-in { transition-delay: 90ms; }
.js-reveal .reveal-3.is-in { transition-delay: 180ms; }

/* Safety net: if the observer never fires within 3s of load, show everything. */
.js-reveal.reveal-failsafe .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .js-reveal .reveal { opacity: 1; transform: none; }
  .thread { opacity: 1; }
  * { transition-duration: 1ms !important; animation-duration: 1ms !important; }
}

/* ==========================================================================
   PRINT — a patient printing a condition page must get the text, not a
   dark rectangle and four blank sheets.
   ========================================================================== */
@media print {
  .js-reveal .reveal, .reveal { opacity: 1 !important; transform: none !important; }
  .header, .mega, .drawer, .drawer-scrim, .thread,
  .hero-media, .hero-bg, .connectome, .tracto, .skip { display: none !important; }
  body { background: #FFF; color: #000; font-size: 11pt; }
  .hero { min-height: auto; padding-block: 0 var(--s-6); }
  .hero--dark, .ground-dark, .research, .footer {
    background: #FFF !important; color: #000 !important;
  }
  .hero--dark .hero-title, .hero--dark .hero-sub, .hero--dark .stat-num,
  .hero--dark .stat-label, .hero--dark .eyebrow,
  .ground-dark .h1, .ground-dark .h2, .ground-dark .h3, .ground-dark .h4,
  .research-card, .research-card .h4, .research-meta, .footer a {
    color: #000 !important;
  }
  .card, .research-card { box-shadow: none !important; border: 1px solid #CCC !important;
                          break-inside: avoid; }
  .chapter { padding-block: var(--s-6); break-inside: avoid-page; }
  .ph, .btn, .form-grid, .voices { display: none !important; }
  a[href^="http"]::after, a[href^="tel"]::after, a[href^="mailto"]::after {
    content: " (" attr(href) ")"; font-size: 9pt; color: #555;
  }
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 75rem) {
  .thread { display: none; }
  .wrap, .header-inner, .mega-inner { padding-inline: var(--margin-tablet); }
  .mega-inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-grid { grid-template-columns: minmax(0, 1fr); }
  .hero-portrait { order: -1; max-width: 26rem; }
  .hero-badge { left: auto; right: calc(var(--s-5) * -1); }
  .panels, .research-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .panel { transform: none !important; }
  .voices { columns: 2; }
  .mag { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 60rem) {
  .nav, .lang { display: none; }
  .burger { display: inline-flex; }
  .nav-actions { margin-left: auto; }
  .chapter { padding-block: var(--s-10); }
  .split, .split-editorial { grid-template-columns: minmax(0, 1fr); gap: var(--s-7); }
  .hero-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-5); }
}

@media (max-width: 42rem) {
  .wrap, .header-inner { padding-inline: var(--margin-mobile); }
  .panels, .research-grid, .rooms, .form-grid { grid-template-columns: minmax(0, 1fr); }
  .voices { columns: 1; }
  .tl-item, .tech-row, .room { grid-template-columns: minmax(0, 1fr); gap: var(--s-4); }
  .tech-row { padding: var(--s-5); }
  .room .ph { aspect-ratio: 16 / 9; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .hero-badge { position: static; margin-top: var(--s-4); max-width: none; }
  .logo-name { font-size: var(--t-body); }
}

/* Mobile header: the appointment CTA lives inside the drawer, not the bar. */
@media (max-width: 42rem) {
  .header .nav-actions > .btn { display: none; }
  .header-inner { gap: var(--s-4); }
}


/* Phones: the sentence leads, the portrait follows. Tablet keeps the
   magazine order because there is room for both above the fold. */
@media (max-width: 42rem) {
  .hero-portrait { order: 0; }
  .hero-grid { gap: var(--s-7); }
  .hero { padding-block: 6.5rem var(--s-7); min-height: auto; }
}


/* ==========================================================================
   HERO v1.1 — dark ground, bleeding portrait, gradient on the left only.
   Derived from the measured values of the chosen mockup.
   ========================================================================== */

.hero--dark { background: var(--ocean-950); color: var(--text-onDarkMuted); }
.hero--dark .hero-bg-fill {
  background:
    radial-gradient(90% 120% at 6% 46%, rgba(23,56,79,.55), transparent 62%),
    linear-gradient(96deg, var(--ocean-950) 0%, #061A2B 46%, #062334 100%);
}
.hero--dark .tracto path { stroke: #FFFFFF; opacity: .07; }
.hero--dark .tracto .tracto-lit { stroke: #8E2F3A; opacity: .38; }

/* the portrait bleeds off the right edge and dissolves leftwards */
.hero-media {
  position: absolute; right: 0; top: 0; bottom: 0; width: 54%;
  z-index: 0; overflow: hidden;
}
.hero-media .ph-bleed {
  height: 100%; width: 100%; border: 0; border-radius: 0;
  background: linear-gradient(160deg, #123049, #0A2233 45%, #061A2B);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 34%, #000 88%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 34%, #000 88%, transparent);
}
.hero-media .ph-bleed::after { color: #7FA3B9; opacity: .55; left: auto; right: var(--s-6); }

.hero-wrap { position: relative; z-index: 1; }
.hero-copy { max-width: 34rem; }
.hero--dark .eyebrow { color: rgba(242,244,245,.62); }
.hero--dark .hero-title { color: #FFFFFF; }
.hero--dark .hero-title em { color: #FFFFFF; font-style: italic; }
.hero--dark .hero-sub { color: rgba(242,244,245,.74); max-width: 40ch; }
.hero--dark .hero-cta { align-items: center; gap: var(--s-6); }

.link-onDark { color: var(--text-onDark); border-color: var(--line-onDark); }
.link-onDark:hover { color: #FFFFFF; border-color: var(--ox-400); }

/* stats on dark, with hairline separators like the reference */
.hero--dark .hero-stats { border-top-color: var(--line-onDark); gap: 0; }
.hero--dark .stat {
  display: flex; align-items: flex-start; gap: var(--s-4);
  padding-inline: var(--s-6);
  border-left: 1px solid var(--line-onDark);
}
.hero--dark .stat:first-child { border-left: 0; padding-left: 0; }
.hero--dark .stat .icon { stroke: var(--ocean-400); flex: none; margin-top: .2em; }
.hero--dark .stat-num { color: #FFFFFF; font-size: var(--t-h2); }
.hero--dark .stat-num .unit { color: var(--ox-400); }
.hero--dark .stat-label { color: rgba(242,244,245,.55); }

/* Header sitting over the dark hero, before it collapses to glass */
.header--overDark:not(.is-scrolled) .logo-name { color: #FFFFFF; }
.header--overDark:not(.is-scrolled) .logo-role { color: rgba(242,244,245,.55); }
.header--overDark:not(.is-scrolled) .logo-mark path { stroke: #FFFFFF; }
.header--overDark:not(.is-scrolled) .nav-link { color: rgba(242,244,245,.86); }
.header--overDark:not(.is-scrolled) .nav-link:hover,
.header--overDark:not(.is-scrolled) .nav-link[aria-expanded="true"] { color: #FFFFFF; background: rgba(255,255,255,.08); }
.header--overDark:not(.is-scrolled) .lang { color: rgba(242,244,245,.55); }
.header--overDark:not(.is-scrolled) .lang-btn[aria-pressed="true"] { color: #FFFFFF; }
.header--overDark:not(.is-scrolled) .burger { border-color: rgba(255,255,255,.28); }
.header--overDark:not(.is-scrolled) .burger span,
.header--overDark:not(.is-scrolled) .burger span::before,
.header--overDark:not(.is-scrolled) .burger span::after { background: #FFFFFF; }
.header--overDark.is-open:not(.is-scrolled) { background: var(--ocean-950); }

@media (max-width: 75rem) {
  /* The portrait leaves the flex row entirely and becomes a band under the copy. */
  .hero { display: block; }
  .hero-media {
    position: static; width: 100%; height: 20rem;
    margin-top: var(--s-8);
  }
  .hero-media .ph-bleed {
    -webkit-mask-image: linear-gradient(180deg, #000 72%, transparent);
            mask-image: linear-gradient(180deg, #000 72%, transparent);
  }
  .hero-copy { max-width: none; }
}

@media (max-width: 60rem) {
  .hero--dark .stat { border-left: 0; padding-inline: 0; }
  .hero--dark .hero-stats { gap: var(--s-6); }
}