/* Atlas Mynd — atlasmynd.ai v1
   Brand system v1.0: Paper / Ink / Ochre (sparingly) / Parchment / Graphite / Meridian / Clay

   Type treatments — the complete set. Anything new must map to one of these.
   1. Display    Inter Tight 600, clamped scale          h1, h2
   2. Heading    Inter Tight 600, 17–22px                h3, card titles, module names
   3. Body       Inter 400, 17px / 15–15.5px small       prose, descriptions
   4. Editorial  Source Serif 4, 18–24px                 hero sub, ledes, ink panels, pull quote
   5. Label      JetBrains Mono 500, 10.5–11px, caps     eyebrows, nav, form labels, tags, footer
   6. Data       JetBrains Mono, 11–16px, sentence case  chart labels, percentages, source lines
   7. Button     Inter Tight 600, 16px                   all .btn */

:root {
  --am-paper: #F8F5EE;
  --am-ink: #14182B;
  --am-ochre: #B8873A;
  --am-parchment: #EBE4D4;
  --am-graphite: #4A4F5C;
  --am-meridian: #4A6B7C;
  --am-clay: #8C6A4F;
  /* body-secondary text: darker than graphite, reserved-gray stays for micro-labels only */
  --am-ink-soft: #2E3349;
  /* alternating section band: one step deeper than Paper, shallower than Parchment */
  --am-paper-deep: #F1ECDF;
  /* accent hues darkened for small text — pure Ochre/Clay sit below 4.5:1 on Paper */
  --am-ochre-text: #8F6113;
  --am-clay-text: #74543C;

  --font-display: "Inter Tight", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-mono: "JetBrains Mono", "Cascadia Code", Consolas, monospace;

  --hairline: 1px solid rgba(20, 24, 43, 0.14);
  --measure: 62ch;
}

/* ---------- Reset & base ---------- */

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

body {
  margin: 0;
  background: var(--am-paper);
  color: var(--am-ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

main { display: block; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0 0 0.6em;
}

p { margin: 0 0 1em; }

a { color: inherit; }

::selection { background: rgba(184, 135, 58, 0.25); }

/* ---------- Header ---------- */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1160px;
  margin: 0 auto;
  padding: 22px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
}

.brand:focus-visible {
  outline: 2px solid var(--am-ink);
  outline-offset: 4px;
}

/* skip link — first focusable element on the page */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 12px;
  z-index: 10;
  background: var(--am-ink);
  color: var(--am-paper);
  padding: 10px 16px;
  border-radius: 3px;
  font-size: 14px;
  text-decoration: none;
}

.skip-link:focus,
.skip-link:focus-visible { left: 12px; }

/* Cartographer's Star — the locked v2 mark */
.mark { width: 34px; height: 34px; flex: none; }
.mark .blade { fill: var(--am-ink); }
.mark .core { fill: var(--am-ochre); }

.wordmark {
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.22em;
}

.wordmark .wm-light { font-weight: 300; }
.wordmark .wm-bold { font-weight: 700; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.25em;
}

.site-nav a {
  display: inline-block;
  padding: 12px 0; /* keeps the tap target comfortable at 11px type */
  text-decoration: none;
  color: var(--am-graphite);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--am-ink);
  text-decoration: underline;
  text-underline-offset: 5px;
}

.site-nav .nav-contact { color: var(--am-ink); }

@media (max-width: 720px) {
  .site-header { flex-wrap: wrap; padding-top: 16px; padding-bottom: 10px; }
  .site-nav { flex-wrap: wrap; gap: 0 18px; letter-spacing: 0.18em; }
  .site-nav a { padding: 8px 0; }
}

/* ---------- Hero ---------- */

.hero {
  max-width: 1160px;
  margin: 0 auto;
  padding: clamp(44px, 6.5vw, 88px) 24px clamp(52px, 7vw, 96px);
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}

.hero h1 {
  font-size: clamp(42px, 5.4vw, 74px);
  max-width: 21ch;
  margin-bottom: 0.45em;
}

.hero-figure {
  width: 100%;
  max-width: 520px;
  height: auto;
  justify-self: end;
}

.hero-figure .hf-contours circle {
  fill: none;
  stroke: var(--am-ink);
  stroke-width: 1;
  stroke-dasharray: 2 7;
  opacity: 0.16;
}

.hero-figure .hf-marks path {
  stroke: var(--am-graphite);
  stroke-width: 1;
  opacity: 0.5;
}

.hero-figure .hf-lines line {
  stroke: var(--am-ink);
  stroke-width: 1;
  opacity: 0.4;
}

.hero-figure .hf-nodes circle { fill: var(--am-ink); }
.hero-figure .hf-nodes .hf-hub { fill: var(--am-ochre); }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; }
  .hero-figure { display: none; }
}

.hero-sub {
  font-family: var(--font-serif);
  font-size: clamp(19px, 1.6vw, 21px);
  line-height: 1.55;
  color: var(--am-ink-soft);
  max-width: 56ch;
  margin-bottom: 2.2em;
}

/* Button treatment — Inter Tight, filled Ink. Ochre never fills a button (brand rule). */
.btn {
  display: inline-block;
  border: 1.5px solid var(--am-ink);
  border-radius: 3px;
  padding: 14px 28px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.01em;
  text-decoration: none;
  background: var(--am-ink);
  color: var(--am-paper);
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.btn:hover {
  background: var(--am-ink-soft);
  border-color: var(--am-ink-soft);
}

.btn:focus-visible {
  outline: 2px solid var(--am-ochre);
  outline-offset: 3px;
}

/* quiet variant for secondary actions (thanks-page back link) */
.btn-ghost {
  background: transparent;
  color: var(--am-ink);
}

.btn-ghost:hover {
  background: var(--am-ink);
  border-color: var(--am-ink);
  color: var(--am-paper);
}

/* ---------- Sections ---------- */

.section {
  max-width: 1160px;
  margin: 0 auto;
  padding: clamp(56px, 8vw, 110px) 24px;
  border-top: var(--hairline);
}

/* full-bleed alternating band — background extends to viewport edges
   while content stays inside the column */
.section-alt {
  background: var(--am-paper-deep);
  box-shadow: 0 0 0 100vmax var(--am-paper-deep);
  clip-path: inset(0 -100vmax);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--am-ochre-text);
  margin-bottom: 1.6em;
}

.section h2 {
  font-size: clamp(28px, 3.4vw, 44px);
  max-width: 24ch;
}

.section h3 { font-size: 20px; }

.prose { max-width: var(--measure); }
.prose p { color: var(--am-ink); }

.section-lede {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 19px;
  color: var(--am-ink-soft);
  max-width: var(--measure);
}

/* ink panel — dark block with light type, for the few points that earn it */
.ink-panel {
  background: var(--am-ink);
  color: var(--am-paper);
  border-radius: 6px;
  padding: clamp(26px, 4vw, 42px) clamp(26px, 4vw, 46px);
}

.ink-panel > p:not(.ink-eyebrow) {
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.5;
  margin: 0;
}

.ink-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--am-ochre);
  margin: 0 0 16px;
}

.ladder-note {
  max-width: 820px;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: clamp(20px, 3vw, 30px) clamp(24px, 3.5vw, 38px);
}

.ladder-note .ink-eyebrow { margin-bottom: 10px; }

/* keep the problem section to one screen on desktop */
#problem {
  padding-top: clamp(36px, 4.5vw, 48px);
  padding-bottom: clamp(24px, 3vw, 32px);
}

#problem h2 { max-width: 34ch; }
#problem .prose { max-width: 72ch; }
#problem .ladder { margin-top: 24px; }
#problem .ladder-note { margin-top: 24px; padding-top: 22px; padding-bottom: 22px; }

/* ---------- Maturity ladder ---------- */

.ladder { margin: clamp(24px, 3.5vw, 40px) 0 0; }

.ladder-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  align-items: end;
  border-bottom: var(--hairline);
}

.ladder-step { padding-bottom: 10px; position: relative; }

/* ascending baseline: each level sits a step higher */
.ladder-step:nth-child(1) { padding-bottom: 10px; }
.ladder-step:nth-child(2) { padding-bottom: 21px; }
.ladder-step:nth-child(3) { padding-bottom: 32px; }
.ladder-step:nth-child(4) { padding-bottom: 43px; }
.ladder-step:nth-child(5) { padding-bottom: 54px; }

.ladder-step::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 1px;
  background: rgba(20, 24, 43, 0.25);
}

.ladder-step:nth-child(1)::after { height: 5px; }
.ladder-step:nth-child(2)::after { height: 16px; }
.ladder-step:nth-child(3)::after { height: 27px; }
.ladder-step:nth-child(4)::after { height: 38px; }
.ladder-step:nth-child(5)::after { height: 49px; }

.ladder-level {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--am-graphite);
  margin-bottom: 10px;
}

.ladder-title { font-size: 17px; margin-bottom: 0.4em; }

.ladder-desc {
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--am-ink-soft);
  margin: 0 0 12px;
}

.ladder-pct {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--am-meridian);
  margin: 0;
}

.ladder-pct span {
  display: block;
  font-size: 10px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--am-graphite);
  margin-top: 4px;
}

.ladder-step.is-muted .ladder-title,
.ladder-step.is-muted .ladder-pct { color: var(--am-graphite); }

.ladder-step.is-goal .ladder-pct { color: var(--am-ochre-text); }

/* destination markers: solid box = where we take you, dashed = where we're headed */
.step-box {
  position: relative;
  border-radius: 6px;
  padding: 14px 14px 12px;
}

.is-target .step-box {
  background: var(--am-parchment);
  border: 1.5px solid var(--am-ink);
}

.is-goal .step-box {
  border: 1.5px dashed rgba(20, 24, 43, 0.4);
}

.step-tag {
  position: absolute;
  top: -9px;
  left: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  background: var(--am-paper);
  padding: 0 7px;
  white-space: nowrap;
}

.is-target .step-tag { color: var(--am-meridian); }
.is-goal .step-tag { color: var(--am-meridian); }

.is-target .ladder-desc,
.is-goal .ladder-desc { margin-bottom: 8px; }

/* data-caption treatment, same register as .source-line */
.ladder-caption {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--am-graphite);
}

.ladder-bracket {
  display: inline-block;
  width: clamp(80px, 24vw, 300px);
  height: 1px;
  background: var(--am-ochre);
}

@media (max-width: 860px) {
  .ladder-track {
    grid-template-columns: 1fr;
    gap: 0;
    align-items: start;
    border-bottom: none;
    border-left: var(--hairline);
  }
  .ladder-step,
  .ladder-step:nth-child(n) { padding: 0 0 32px 24px; }
  .ladder-step::after,
  .ladder-step:nth-child(n)::after {
    left: -1px;
    top: 4px;
    bottom: auto;
    width: 1px;
    height: 14px;
    background: rgba(20, 24, 43, 0.45);
  }
  .ladder-caption { justify-content: flex-start; padding-left: 24px; }
  .ladder-bracket { width: 40px; }
}

/* ---------- Data chart ---------- */

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
  margin-top: 12px;
}

@media (max-width: 920px) {
  .split { grid-template-columns: 1fr; }
}

.chart-figure { margin: 0; }
.chart { width: 100%; height: auto; display: block; }

.chart .axis { stroke: rgba(20, 24, 43, 0.2); stroke-width: 1; }

.chart .axis-label,
.chart .series-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  fill: var(--am-graphite);
}

.chart .series-label { fill: var(--am-ink); }
.chart .series-label.muted { fill: var(--am-graphite); }

.chart .line-top {
  fill: none;
  stroke: var(--am-meridian);
  stroke-width: 2.25;
}

.chart .line-rest {
  fill: none;
  stroke: var(--am-meridian);
  stroke-width: 1.5;
  opacity: 0.45;
  stroke-dasharray: 5 5;
}

.chart .dot-key { fill: var(--am-ochre); }

.source-line {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--am-graphite);
  margin-top: 14px;
  max-width: 60ch;
}

/* ---------- How it works ---------- */

.how-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 64px);
  margin-top: 8px;
}

@media (max-width: 760px) {
  .how-cols { grid-template-columns: 1fr; gap: 8px; }
}

/* ---------- Brain-flow diagram (How it works) ----------
   Wide + JS: the interactive .brainflow (connectors + hover trace).
   Narrow screens and no-JS: the simplified, stacked, static .brainflow-mobile. */
.brainflow { display: none; margin: clamp(40px, 5vw, 64px) 0 0; }
.brainflow-mobile { display: block; margin: clamp(40px, 5vw, 64px) 0 0; }
html.js .brainflow { display: block; }
html.js .brainflow-mobile { display: none; }

.brainflow .bf-stage-wrap { overflow-x: auto; padding-bottom: 8px; -webkit-overflow-scrolling: touch; }
.brainflow .bf-stage {
  position: relative;
  background: var(--am-paper-deep);
  border: var(--hairline);
  border-radius: 9px;
  padding: 26px 28px 30px;
}
.brainflow svg.wires { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 1; overflow: visible; }
.brainflow .bf-grid { position: relative; z-index: 2; display: flex; flex-direction: column; gap: 58px; min-width: 1040px; }
.brainflow .rowlabel {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--am-graphite); margin: 0 0 26px; display: inline-block;
  background: var(--am-paper-deep); padding: 2px 12px 2px 0; position: relative; z-index: 5;
}

/* node base + hover highlight system */
.brainflow .node { background: #fff; border: 1px solid rgba(20,24,43,0.16); border-radius: 7px; transition: opacity 0.16s, box-shadow 0.16s, border-color 0.16s; }
.brainflow [data-clickable] { cursor: pointer; }
.brainflow .has-hover .node:not(.lit) { opacity: 0.28; }
.brainflow .has-hover .hl:not(.lit) { opacity: 0.34; }
.brainflow .has-hover .edge:not(.lit) { opacity: 0.07; }
.brainflow .node.lit { box-shadow: 0 5px 18px rgba(20,24,43,0.13); border-color: var(--am-ochre); }
.brainflow .edge { transition: opacity 0.16s, stroke-width 0.16s; }
.brainflow .edge.lit { stroke-width: 2.6px; opacity: 0.98 !important; }

/* sources */
.brainflow .sources-row { display: grid; grid-template-columns: 1.32fr 1fr 1fr; gap: 18px; }
.brainflow .panel { background: #fff; border: 1px solid rgba(20,24,43,0.16); border-radius: 8px; overflow: hidden; align-self: start; }
.brainflow .p-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 9px 13px; background: var(--am-ink); color: var(--am-paper); }
.brainflow .p-head .pt { font-family: var(--font-display); font-weight: 600; font-size: 12.5px; }
.brainflow .p-head .ps { font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(248,245,238,0.55); }
.brainflow .p-body { padding: 11px 13px; }
.brainflow .tline { font-size: 13px; line-height: 1.5; margin: 0 0 7px; display: flex; gap: 8px; }
.brainflow .tline:last-child { margin-bottom: 0; }
.brainflow .tline .spk { flex: none; font-family: var(--font-mono); font-size: 10px; color: var(--am-graphite); width: 64px; padding-top: 2px; line-height: 1.3; }
.brainflow .tline .tx { flex: 1; }
.brainflow .hl { padding: 1px 4px; border-radius: 3px; border-bottom: 2px solid transparent; transition: opacity 0.16s; cursor: pointer; }
.brainflow .litem { display: block; padding: 8px 9px; border-radius: 6px; border: 1px solid transparent; margin-bottom: 7px; transition: opacity 0.16s; cursor: pointer; }
.brainflow .litem:last-child { margin-bottom: 0; }
.brainflow .li-src { font-family: var(--font-mono); font-size: 10px; color: var(--am-graphite); margin-bottom: 3px; display: flex; align-items: center; gap: 6px; }
.brainflow .li-src i { width: 8px; height: 8px; border-radius: 2px; flex: none; }
.brainflow .li-hl { font-size: 12.5px; line-height: 1.4; }
.brainflow .li-q { padding: 1px 4px; border-radius: 3px; border-bottom: 2px solid transparent; }

/* upkeep layers (workers) */
.brainflow .workers-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; }
.brainflow .worker { padding: 10px 11px; border-top: 3px solid var(--am-graphite); }
.brainflow .worker .wn { font-family: var(--font-display); font-weight: 600; font-size: 13.5px; display: flex; justify-content: space-between; align-items: baseline; gap: 6px; }
.brainflow .worker .wcad { font-family: var(--font-mono); font-size: 8.5px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--am-graphite); font-weight: 400; }
.brainflow .worker .wcue { font-size: 10.5px; color: var(--am-graphite); margin-top: 5px; min-height: 26px; line-height: 1.3; }
.brainflow .worker .wdest { font-family: var(--font-mono); font-size: 9.5px; margin-top: 7px; padding-top: 6px; border-top: 1px dashed rgba(20,24,43,0.16); }

/* brain row */
.brainflow .brain-row { display: flex; justify-content: center; align-items: stretch; gap: 22px; }
.brainflow .jobbox { width: 180px; background: #fff; border: var(--hairline); border-radius: 9px; padding: 13px 14px; align-self: center; }
.brainflow .jb-h { font-family: var(--font-display); font-weight: 600; font-size: 13.5px; display: flex; flex-direction: column; gap: 2px; }
.brainflow .jb-h span { font-size: 10.5px; color: var(--am-graphite); font-weight: 400; letter-spacing: 0; }
.brainflow .jb-list { font-size: 12px; color: var(--am-ink-soft); line-height: 1.55; margin-top: 9px; }
.brainflow .jb-loop { font-size: 10.5px; color: var(--am-graphite); margin-top: 11px; font-style: italic; }
.brainflow .jb-loop b { color: var(--am-ochre-text); font-weight: 600; font-style: normal; }
.brainflow .brainbox { width: 400px; background: #fff; border: 1.5px solid var(--am-ochre); border-radius: 11px; padding: 17px 20px 18px; text-align: left; position: relative; }
.brainflow .bx-top { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; }
.brainflow .bx-title { font-family: var(--font-display); font-weight: 600; font-size: 22px; letter-spacing: -0.02em; }
.brainflow .bx-mcp { font-size: 11px; color: var(--am-graphite); text-align: right; line-height: 1.4; }
.brainflow .bx-mcp em { font-style: normal; color: var(--am-ochre-text); }
.brainflow .bx-div { height: 1px; background: rgba(20,24,43,0.1); margin: 14px 0 13px; }
.brainflow .bx-grp { display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; align-items: baseline; }
.brainflow .bx-grp .k { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--am-graphite); }
.brainflow .bx-grp .v { font-size: 13px; color: var(--am-ink-soft); line-height: 1.5; }

/* modules */
.brainflow .modules-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; }
.brainflow .mod { padding: 10px 11px; }
.brainflow .mod .mn { font-family: var(--font-display); font-weight: 600; font-size: 13px; }
.brainflow .mod .mcad { font-family: var(--font-mono); font-size: 8.5px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--am-ochre-text); margin-top: 2px; }
.brainflow .mod .ml { font-size: 11px; color: var(--am-ink-soft); margin-top: 6px; line-height: 1.35; }
.brainflow .mod .md { font-family: var(--font-mono); font-size: 9px; color: var(--am-graphite); margin-top: 7px; padding-top: 6px; border-top: 1px dashed rgba(20,24,43,0.16); }
.brainflow .mod.next { border-style: dashed; background: transparent; }
.brainflow .mod.next .mn { color: var(--am-ink-soft); }

/* caption + detail */
.brainflow .bf-caption { font-size: 12.5px; color: var(--am-graphite); text-align: center; margin: 16px auto 0; max-width: 70ch; }
.brainflow .bf-detail { margin-top: 16px; border: var(--hairline); border-radius: 7px; background: #fff; padding: 13px 16px; min-height: 58px; display: flex; gap: 14px; }
.brainflow .bf-detail .dk { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--am-graphite); flex: none; width: 96px; padding-top: 2px; }
.brainflow .bf-detail .dv .dt { font-family: var(--font-display); font-weight: 600; font-size: 15px; margin-bottom: 2px; }
.brainflow .bf-detail .dv .dd { font-size: 13.5px; color: var(--am-ink-soft); }
.brainflow .bf-detail.empty .dv { color: var(--am-graphite); font-size: 13.5px; padding-top: 3px; }

/* ---- simplified, stacked, static version (mobile + no-JS) ---- */
.brainflow-mobile { max-width: 460px; margin-left: auto; margin-right: auto; }
.brainflow-mobile .bfm-step { background: #fff; border: var(--hairline); border-radius: 9px; padding: 15px 16px; }
.brainflow-mobile .bfm-label { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--am-graphite); margin: 0 0 12px; }
.brainflow-mobile .bfm-srcrow { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 10px; }
.brainflow-mobile .bfm-dot { width: 10px; height: 10px; border-radius: 2px; margin-top: 5px; flex: none; }
.brainflow-mobile .bfm-srcrow b { font-family: var(--font-display); font-weight: 600; font-size: 15px; display: block; }
.brainflow-mobile .bfm-srcrow span { font-size: 13px; color: var(--am-graphite); }
.brainflow-mobile .bfm-eg { font-family: var(--font-serif); font-style: italic; font-size: 14px; color: var(--am-ink-soft); margin: 12px 0 0; padding-top: 12px; border-top: 1px dashed rgba(20,24,43,0.14); }
.brainflow-mobile .bfm-arrow { font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--am-graphite); text-align: center; margin: 0; padding: 11px 0; }
.brainflow-mobile .bfm-arrow::before { content: "\2193"; display: block; font-size: 16px; line-height: 1; color: var(--am-ochre); margin-bottom: 3px; }
.brainflow-mobile .bfm-layers { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.brainflow-mobile .bfm-layer { border: var(--hairline); border-top: 3px solid var(--am-graphite); border-radius: 6px; padding: 8px 9px; }
.brainflow-mobile .bfm-layer b { font-family: var(--font-display); font-weight: 600; font-size: 13px; display: block; }
.brainflow-mobile .bfm-layer span { font-family: var(--font-mono); font-size: 9.5px; color: var(--am-graphite); }
.brainflow-mobile .bfm-brain { border: 1.5px solid var(--am-ochre); text-align: center; }
.brainflow-mobile .bfm-brain-title { font-family: var(--font-display); font-weight: 600; font-size: 20px; margin: 0; }
.brainflow-mobile .bfm-brain-mcp { font-family: var(--font-mono); font-size: 11px; color: var(--am-ochre-text); margin: 4px 0 0; }
.brainflow-mobile .bfm-brain-sub { font-size: 13px; color: var(--am-ink-soft); margin: 10px 0 0; }
.brainflow-mobile .bfm-mods { display: grid; grid-template-columns: 1fr; gap: 8px; }
.brainflow-mobile .bfm-mod { border: var(--hairline); border-radius: 6px; padding: 9px 11px; }
.brainflow-mobile .bfm-mod b { font-family: var(--font-display); font-weight: 600; font-size: 14px; display: block; }
.brainflow-mobile .bfm-mod span { font-size: 12.5px; color: var(--am-ink-soft); }
.brainflow-mobile .bfm-mod-next { border-style: dashed; }
.brainflow-mobile .bfm-mod-next b { color: var(--am-ink-soft); }

@media (max-width: 760px) {
  .brainflow, html.js .brainflow { display: none; }
  .brainflow-mobile, html.js .brainflow-mobile { display: block; }
}

/* ---------- Module grid ---------- */

.module-grid { margin-top: clamp(32px, 4.5vw, 52px); }

.modules-lead {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--am-graphite);
  margin-bottom: 18px;
}

.module-grid dl {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px 32px;
}

.module-item {
  border-top: var(--hairline);
  padding-top: 14px;
}

.module-item dt {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15.5px;
  letter-spacing: -0.005em;
  margin-bottom: 4px;
}

.module-item dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--am-ink-soft);
}

.module-item-next { border-top: 1px dashed rgba(20, 24, 43, 0.4); }

@media (max-width: 920px) {
  .module-grid dl { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .module-grid dl { grid-template-columns: 1fr; gap: 20px; }
}

/* ---------- Layer callout (Where we sit) ---------- */

.layer-callout {
  margin-top: clamp(28px, 4vw, 44px);
  max-width: 820px;
}

/* ---------- Engagement steps ---------- */

.steps {
  list-style: none;
  margin: clamp(32px, 4vw, 48px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(24px, 3vw, 48px);
}

@media (max-width: 860px) {
  .steps { grid-template-columns: 1fr; max-width: 560px; }
}

.steps li {
  border-top: var(--hairline);
  padding-top: 20px;
}

.step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.25em;
  color: var(--am-clay-text);
  margin-bottom: 12px;
}

.steps h3 { font-size: 19px; margin-bottom: 0.4em; }

.steps p {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--am-ink-soft);
  margin: 0;
}

/* ---------- Trust grid ---------- */

.trust-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(24px, 3vw, 44px);
  margin-top: clamp(36px, 5vw, 56px);
  max-width: 880px;
}

@media (max-width: 720px) {
  .trust-grid { grid-template-columns: 1fr; }
}

.trust-item {
  border-top: var(--hairline);
  padding-top: 18px;
}

.trust-item h3 { font-size: 17px; margin-bottom: 0.4em; }

.trust-item p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--am-ink-soft);
  margin: 0;
}

/* ---------- Story cards ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: clamp(32px, 4vw, 48px);
}

@media (max-width: 980px) {
  .cards { grid-template-columns: 1fr; max-width: 640px; }
}

.card {
  background: var(--am-parchment);
  border-radius: 4px;
  padding: 30px 28px 26px;
}

.card-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--am-clay-text);
  margin-bottom: 1.4em;
}

.card h3 {
  font-size: 21px;
  line-height: 1.25;
  margin-bottom: 0.7em;
}

.card p:last-child {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--am-ink-soft);
  margin: 0;
}

/* ---------- CTA / footer ---------- */

.cta { padding-bottom: clamp(56px, 8vw, 100px); }

.cta h2 { max-width: 20ch; }

.cta-sub {
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.55;
  color: var(--am-ink-soft);
  max-width: 52ch;
}

.contact-form {
  margin-top: 2.4em;
  max-width: 560px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--am-graphite);
  margin-bottom: 8px;
}

.field input,
.field textarea {
  width: 100%;
  background: var(--am-paper);
  border: 1px solid rgba(20, 24, 43, 0.35);
  border-radius: 3px;
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--am-ink);
}

.field textarea { resize: vertical; }

.field input:focus-visible,
.field textarea:focus-visible {
  outline: none;
  border-color: var(--am-ink);
  box-shadow: 0 0 0 1px var(--am-ink);
}

.field ::placeholder { color: rgba(74, 79, 92, 0.85); }

.contact-form .btn {
  align-self: flex-start;
  cursor: pointer;
}

.contact-form .btn:disabled {
  opacity: 0.55;
  cursor: default;
}

.hp { position: absolute; left: -9999px; height: 0; width: 0; opacity: 0; }

.form-note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--am-ink-soft);
  margin: 0;
  min-height: 1em;
}

.form-note a { color: var(--am-ink); }

.site-footer {
  max-width: 1160px;
  margin: 0 auto;
  padding: 28px 24px 40px;
  border-top: var(--hairline);
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--am-graphite);
}

.mark-footer { width: 22px; height: 22px; }
.site-footer p { margin: 0; }

.footer-mail {
  margin-left: auto;
  padding: 10px 0;
  color: var(--am-graphite);
  text-decoration: none;
}

.footer-mail:hover,
.footer-mail:focus-visible {
  color: var(--am-ink);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ---------- Reveal on scroll (JS + motion-OK only) ---------- */

@media (prefers-reduced-motion: no-preference) {
  html.js:not(.no-reveal) .reveal {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 600ms ease, transform 600ms ease;
  }
  html.js:not(.no-reveal) .reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Small screens ---------- */

@media (max-width: 480px) {
  body { font-size: 16px; }
  .section { padding-left: 20px; padding-right: 20px; }
  .hero { padding-left: 20px; padding-right: 20px; }
  .site-header { padding-left: 20px; padding-right: 20px; }
  .card { padding: 26px 22px 22px; }
  .btn { width: 100%; text-align: center; }
}