/* ==========================================================================
   ClearStartAI — Section & composition styles
   Depends on core.css tokens. Every section inherits its palette from the
   .tone-* band it sits in.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Signature background textures
   -------------------------------------------------------------------------- */

/* Fine engineering grid — used behind ink bands. Masked so it never reads
   as "circuit board", only as measured drafting paper. */
.bg-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(150, 200, 235, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(150, 200, 235, 0.07) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 10%, transparent 75%);
  mask-image: radial-gradient(120% 90% at 50% 0%, #000 10%, transparent 75%);
}

.tone-paper .bg-grid,
.tone-mist .bg-grid {
  background-image:
    linear-gradient(to right, rgba(12, 58, 102, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(12, 58, 102, 0.06) 1px, transparent 1px);
}

html[data-theme="dark"] .tone-paper .bg-grid,
html[data-theme="dark"] .tone-mist .bg-grid {
  background-image:
    linear-gradient(to right, rgba(150, 200, 235, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(150, 200, 235, 0.06) 1px, transparent 1px);
}

/* Single restrained brand glow. One per band, never stacked. */
.bg-glow {
  position: absolute;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.5;
}

/* --------------------------------------------------------------------------
   2. Homepage hero
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--header-h) + clamp(3rem, 7vw, 5.5rem));
  padding-bottom: clamp(3rem, 6vw, 5rem);
  min-height: min(100svh, 900px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero__glow {
  width: min(70vw, 780px);
  height: min(70vw, 780px);
  top: -22%;
  right: -12%;
  background: radial-gradient(circle, rgba(37, 154, 202, 0.24), transparent 68%);
}

.hero__glow--2 {
  width: min(50vw, 560px);
  height: min(50vw, 560px);
  top: 42%;
  left: -16%;
  right: auto;
  background: radial-gradient(circle, rgba(57, 198, 200, 0.14), transparent 68%);
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: clamp(3rem, 6vw, 4.5rem);
  align-items: center;
}

@media (min-width: 1060px) {
  .hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: clamp(2rem, 4vw, 4rem);
  }
}

.hero__copy { display: grid; gap: var(--space-6); align-content: start; }

/* Sized so the authored line breaks hold their shape across breakpoints.
   If a line does wrap, the clip-path reveal handles it without slicing. */
.hero__title {
  font-size: clamp(2.15rem, 3.9vw + 0.6rem, 3.75rem);
  line-height: 1.06;
  letter-spacing: -0.038em;
  font-weight: 700;
}

.hero__lead {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  max-width: 52ch;
}

.hero__actions { margin-top: var(--space-2); }

/* Three plain-language proof lines under the fold — no invented metrics */
.hero__proof {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 0;
  margin-top: clamp(3rem, 6vw, 4.5rem);
  border-top: 1px solid var(--color-border);
}

@media (min-width: 780px) {
  .hero__proof { grid-template-columns: repeat(3, 1fr); }
}

.hero__proof > div {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 780px) {
  .hero__proof > div {
    border-bottom: none;
    border-left: 1px solid var(--color-border);
    padding: var(--space-5) var(--space-6) var(--space-2) var(--space-5);
  }
  .hero__proof > div:first-child { border-left: none; padding-left: 0; }
}

.hero__proof dt {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-text-primary);
}

.hero__proof dd { font-size: var(--text-base); color: var(--color-text-muted); line-height: 1.55; }

/* --------------------------------------------------------------------------
   3. Intelligence Network — the hero visual
   Structured, labelled SVG. Not a random particle field: every node is a real
   part of a business, and every edge routes through the ClearStart core.
   -------------------------------------------------------------------------- */

.network {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 0.9;
  max-width: 560px;
  margin-inline: auto;
}

.network svg { width: 100%; height: 100%; overflow: visible; }

.network__edge {
  fill: none;
  stroke: url(#csEdgeGrad);
  stroke-width: 1.4;
  opacity: 0.72;
  stroke-dasharray: var(--len, 400);
  stroke-dashoffset: var(--len, 400);
  animation: net-draw 1.5s var(--ease-out) forwards;
  animation-delay: var(--edge-delay, 0ms);
}

@keyframes net-draw { to { stroke-dashoffset: 0; } }

.network__pulse {
  fill: var(--cs-mint-300);
  opacity: 0;
  filter: drop-shadow(0 0 5px rgba(118, 219, 185, 0.9));
}

.network__node-ring {
  fill: rgba(10, 24, 40, 0.92);
  stroke: rgba(150, 200, 235, 0.4);
  stroke-width: 1;
  transition: stroke var(--dur-2) var(--ease-out);
}

.network__node-dot { fill: var(--cs-blue-500); transition: fill var(--dur-2) var(--ease-out); }

.network__node:hover .network__node-ring,
.network__node:focus-visible .network__node-ring { stroke: var(--cs-cyan-400); }

.network__node:hover .network__node-dot { fill: var(--cs-cyan-400); }

.network__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  fill: #A6BACE;
  transition: fill var(--dur-2) var(--ease-out);
}

.network__node:hover .network__label { fill: #EAF2F9; }

/* Core */
.network__core-plate {
  fill: rgba(12, 32, 54, 0.85);
  stroke: url(#csEdgeGrad);
  stroke-width: 1.25;
}

.network__core-label {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  fill: #EAF2F9;
  text-anchor: middle;
}

.network__core-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  fill: var(--cs-cyan-400);
  text-anchor: middle;
}

.network__halo {
  fill: none;
  stroke: rgba(57, 198, 200, 0.28);
  stroke-width: 1;
  transform-origin: center;
  animation: net-halo 5.5s var(--ease-in-out) infinite;
}

@keyframes net-halo {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.045); opacity: 0.14; }
}

/* Parallax layer driven by pointer position */
.network__layer {
  transition: transform 900ms var(--ease-out);
  transform: translate(calc(var(--nx, 0) * var(--depth, 6px)), calc(var(--ny, 0) * var(--depth, 6px)));
}

@media (prefers-reduced-motion: reduce) {
  .network__edge { animation: none; stroke-dashoffset: 0; }
  .network__halo { animation: none; }
  .network__layer { transform: none; transition: none; }
  .network__pulse { display: none; }
}

/* --------------------------------------------------------------------------
   4. Positioning / credibility band
   -------------------------------------------------------------------------- */

.stance {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: start;
}

@media (min-width: 960px) {
  .stance { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); }
}

.stance__statement {
  font-family: var(--font-display);
  font-size: var(--display-3);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: var(--tracking-tight);
  text-wrap: balance;
}

.stance__body { display: grid; gap: var(--space-5); }

/* Three practice notes, presented as a definition list rather than cards */
.practice {
  display: grid;
  gap: 0;
  margin-top: clamp(2.5rem, 5vw, 4rem);
  border-top: 1px solid var(--color-border);
}

@media (min-width: 820px) {
  .practice { grid-template-columns: repeat(3, 1fr); }
}

.practice__item {
  display: grid;
  gap: var(--space-3);
  align-content: start;
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 820px) {
  .practice__item {
    border-bottom: none;
    border-left: 1px solid var(--color-border);
    padding: var(--space-6) var(--space-6) 0 var(--space-6);
  }
  .practice__item:first-child { border-left: none; padding-left: 0; }
  .practice__item:last-child { padding-right: 0; }
}

.practice__num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  color: var(--color-accent);
}

.practice__title { font-size: var(--text-xl); font-weight: 600; }

.practice__text { font-size: var(--text-base); color: var(--color-text-secondary); line-height: 1.65; }

/* --------------------------------------------------------------------------
   5. Editorial statement band — the scroll "pause"
   -------------------------------------------------------------------------- */

.statement { position: relative; overflow: hidden; }

.statement__quote {
  font-family: var(--font-display);
  font-size: var(--display-2);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.038em;
  max-width: 24ch;
}

.statement__quote .muted { color: var(--color-text-muted); }

.statement__foot {
  display: grid;
  gap: var(--space-5);
  margin-top: clamp(2.5rem, 5vw, 4rem);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

@media (min-width: 900px) {
  .statement__foot {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(2rem, 5vw, 4.5rem);
  }
}

.statement__foot p { font-size: var(--text-md); line-height: var(--leading-relaxed); color: var(--color-text-secondary); }

/* --------------------------------------------------------------------------
   6. Outcomes — big editorial rows, not cards
   -------------------------------------------------------------------------- */

.outcomes { border-top: 1px solid var(--color-border); }

.outcome {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-4);
  padding: clamp(1.5rem, 3.2vw, 2.4rem) 0;
  border-bottom: 1px solid var(--color-border);
  transition: padding-left var(--dur-3) var(--ease-out);
}

@media (min-width: 760px) {
  .outcome { gap: var(--space-6); }
  .outcome:hover,
  .outcome:focus-within { padding-left: clamp(0.75rem, 2vw, 1.5rem); }
}

/* Brand rule that slides in from the left on hover */
.outcome::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: -1px;
  width: 3px;
  background: var(--gradient-brand);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--dur-3) var(--ease-out);
}

.outcome:hover::before,
.outcome:focus-within::before { transform: scaleY(1); }

.outcome__num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  color: var(--color-text-muted);
  padding-top: 0.4em;
  align-self: start;
  transition: color var(--dur-2) var(--ease-out);
}

.outcome:hover .outcome__num { color: var(--color-accent); }

.outcome__main { display: grid; gap: var(--space-2); }

.outcome__title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 2.1rem);
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: var(--tracking-tight);
}

.outcome__title a::after {
  content: "";
  position: absolute;
  inset: 0;
}

/* Always visible — the detail is real content, not a hover reward.
   Hover only lifts its contrast alongside the rule and arrow. */
.outcome__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 62ch;
  transition: color var(--dur-2) var(--ease-out);
}

.outcome:hover .outcome__desc,
.outcome:focus-within .outcome__desc { color: var(--color-text-secondary); }

.outcome__arrow {
  flex: none;
  color: var(--color-text-muted);
  transition: transform var(--dur-2) var(--ease-out), color var(--dur-2) var(--ease-out);
}

.outcome:hover .outcome__arrow,
.outcome:focus-within .outcome__arrow { transform: translateX(5px); color: var(--color-accent); }

/* --------------------------------------------------------------------------
   7. Capability explorer — signature interactive section
   -------------------------------------------------------------------------- */

.explorer { display: grid; gap: clamp(2rem, 4vw, 3rem); }

@media (min-width: 1000px) {
  .explorer {
    grid-template-columns: minmax(0, 260px) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }
}

/* Left rail (desktop only) */
.explorer__rail { display: none; }

@media (min-width: 1000px) {
  .explorer__rail {
    display: grid;
    align-content: start;
    position: sticky;
    top: calc(var(--header-h) + 2rem);
    border-left: 1px solid var(--color-border);
  }
}

.explorer__tab {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-4);
  align-items: baseline;
  width: 100%;
  text-align: left;
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-5);
  color: var(--color-text-muted);
  transition: color var(--dur-2) var(--ease-out), background-color var(--dur-2) var(--ease-out);
}

.explorer__tab::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gradient-brand);
  transform: scaleY(0);
  transform-origin: center;
  transition: transform var(--dur-3) var(--ease-out);
}

.explorer__tab:hover { color: var(--color-text-secondary); }

.explorer__tab[aria-selected="true"] { color: var(--color-text-primary); }
.explorer__tab[aria-selected="true"]::before { transform: scaleY(1); }

.explorer__tab-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: inherit;
  opacity: 0.7;
}

.explorer__tab-name {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: var(--tracking-tight);
}

/* Right panel. Hidden below the tablist breakpoint, where the accordion takes
   over — otherwise both renderings of the same content would show at once. */
.explorer__panels { display: none; }

@media (min-width: 1000px) {
  .explorer__panels { display: block; }
}

.explorer__panel { min-height: 0; }

.explorer__panel[hidden] { display: none; }

.explorer__panel-inner {
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
}

@media (min-width: 1160px) {
  .explorer__panel-inner {
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
    gap: clamp(1.75rem, 3vw, 2.75rem);
    /* Centred so the diagram doesn't leave a void beside taller copy. */
    align-items: center;
  }
}

.explorer__copy { display: grid; gap: var(--space-5); align-content: start; }

.explorer__title {
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: var(--tracking-display);
}

.explorer__text { font-size: var(--text-md); line-height: var(--leading-relaxed); color: var(--color-text-secondary); }

.explorer__services { display: grid; gap: 0; border-top: 1px solid var(--color-border); }

.explorer__services li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-4);
  align-items: baseline;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-base);
}

.explorer__services li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gradient-brand);
  transform: translateY(-2px);
}

/* Animate the panel contents on switch */
.explorer__panel[data-anim="in"] .explorer__copy > *,
.explorer__panel[data-anim="in"] .dgm {
  animation: panel-in var(--dur-3) var(--ease-out) backwards;
}

.explorer__panel[data-anim="in"] .explorer__copy > *:nth-child(1) { animation-delay: 0ms; }
.explorer__panel[data-anim="in"] .explorer__copy > *:nth-child(2) { animation-delay: 50ms; }
.explorer__panel[data-anim="in"] .explorer__copy > *:nth-child(3) { animation-delay: 100ms; }
.explorer__panel[data-anim="in"] .explorer__copy > *:nth-child(4) { animation-delay: 150ms; }
.explorer__panel[data-anim="in"] .dgm { animation-delay: 100ms; }

@keyframes panel-in {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

/* Mobile accordion */
.explorer__accordion { display: grid; border-top: 1px solid var(--color-border); }

@media (min-width: 1000px) {
  .explorer__accordion { display: none; }
}

.explorer__acc-item { border-bottom: 1px solid var(--color-border); }

.explorer__acc-btn {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--space-4);
  align-items: center;
  width: 100%;
  text-align: left;
  padding: var(--space-5) 0;
  color: var(--color-text-primary);
}

.explorer__acc-btn .explorer__tab-name { font-size: var(--text-lg); }

.explorer__acc-icon {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
  color: var(--color-text-muted);
}

.explorer__acc-icon::before,
.explorer__acc-icon::after {
  content: "";
  position: absolute;
  background: currentColor;
  transition: transform var(--dur-2) var(--ease-out), opacity var(--dur-2) var(--ease-out);
}

.explorer__acc-icon::before { left: 0; right: 0; top: 6.25px; height: 1.5px; }
.explorer__acc-icon::after { top: 0; bottom: 0; left: 6.25px; width: 1.5px; }

.explorer__acc-btn[aria-expanded="true"] .explorer__acc-icon { color: var(--color-accent); }
.explorer__acc-btn[aria-expanded="true"] .explorer__acc-icon::after { transform: scaleY(0); opacity: 0; }

.explorer__acc-body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-3) var(--ease-out);
}

.explorer__acc-body > div { overflow: hidden; }

.explorer__acc-item.is-open .explorer__acc-body { grid-template-rows: 1fr; }

.explorer__acc-content { display: grid; gap: var(--space-5); padding-bottom: var(--space-6); }

/* --------------------------------------------------------------------------
   8. Diagrams
   Built from HTML boxes, not positioned SVG text. Boxes size themselves to
   their label, so a longer word can never overflow or collide with a
   connector — and the content stays selectable, translatable and readable
   by assistive tech.
   -------------------------------------------------------------------------- */

.dgm {
  border: 1px solid var(--color-border);
  border-radius: var(--r-lg);
  background-color: var(--color-surface);
  padding: clamp(1.1rem, 2.4vw, 1.6rem);
  /* Diagrams sit in columns of very different widths, so they respond to
     their own width rather than the viewport's. */
  container-type: inline-size;
}

.dgm__caption {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.dgm__flow {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* Go side-by-side only once the container can hold the columns comfortably.
   Below this the flow stacks, which reads better than four squeezed boxes. */
@container (min-width: 380px) {
  .dgm__flow { flex-direction: row; align-items: center; gap: 0; }
  .dgm__group { flex: 1 1 0; min-width: 0; }
  .dgm__join { flex: 0 0 clamp(1rem, 5cqi, 2rem); }
}

/* In a narrow column, step the type down so short labels stay on one line
   instead of breaking into ragged two-line boxes. */
@container (max-width: 560px) {
  .dgm__node { font-size: 0.75rem; padding: 0.5rem 0.4rem; }
  .dgm__node-title { font-size: 0.8125rem; }
  .dgm__node-tag { font-size: 0.625rem; letter-spacing: 0.04em; }
  .dgm__node--core { padding: 0.6rem 0.4rem; }
  .dgm__group-label { font-size: 0.625rem; letter-spacing: 0.08em; }
  .dgm__group { gap: 0.375rem; }
}

.dgm__group {
  display: grid;
  gap: var(--space-2);
  align-content: center;
}

.dgm__group-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-align: center;
}

/* A box. Padding is generous on purpose: text never touches the border. */
.dgm__node {
  display: grid;
  gap: 0.15rem;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--r-sm);
  background-color: var(--color-surface-raised);
  text-align: center;
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1.35;
  color: var(--color-text-primary);
  min-width: 0;
  overflow-wrap: break-word;
}

.dgm__node--accent { border-color: var(--color-secondary); }

.dgm__node--muted {
  border-style: dashed;
  color: var(--color-text-secondary);
  background-color: transparent;
}

/* The ClearStart step — the only place the brand gradient appears here. */
.dgm__node--core {
  padding: 0.8rem;
  border: 1px solid transparent;
  background:
    linear-gradient(var(--color-surface-raised), var(--color-surface-raised)) padding-box,
    var(--gradient-brand) border-box;
}

.dgm__node-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
}

.dgm__node-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.dgm__node--core .dgm__node-tag { color: var(--color-accent); }

/* Connector: chevron down when stacked, chevron right when in a row. */
.dgm__join {
  position: relative;
  height: 20px;
}

.dgm__join::before,
.dgm__join::after { content: ""; position: absolute; }

.dgm__join::before {
  left: 50%;
  top: 2px;
  bottom: 7px;
  width: 1px;
  transform: translateX(-50%);
  background: var(--gradient-brand);
}

.dgm__join::after {
  left: 50%;
  bottom: 3px;
  width: 6px;
  height: 6px;
  border-right: 1.5px solid var(--color-accent);
  border-bottom: 1.5px solid var(--color-accent);
  transform: translate(-50%, 0) rotate(45deg);
}

@container (min-width: 380px) {
  .dgm__join { height: auto; align-self: stretch; min-height: 34px; }

  .dgm__join::before {
    left: 2px;
    right: 7px;
    top: 50%;
    bottom: auto;
    width: auto;
    height: 1px;
    transform: translateY(-50%);
  }

  .dgm__join::after {
    left: auto;
    right: 3px;
    top: 50%;
    bottom: auto;
    transform: translate(0, -50%) rotate(-45deg);
  }
}

/* Two-way connector, for integration-style diagrams. */
.dgm__join--both .dgm__join-back {
  position: absolute;
  left: 50%;
  top: 3px;
  width: 6px;
  height: 6px;
  border-left: 1.5px solid var(--color-accent);
  border-top: 1.5px solid var(--color-accent);
  transform: translate(-50%, 0) rotate(45deg);
}

@container (min-width: 380px) {
  .dgm__join--both .dgm__join-back {
    left: 3px;
    top: 50%;
    transform: translate(0, -50%) rotate(-45deg);
  }
}

.dgm__note {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--color-text-muted);
}

/* Reveal: each column group arrives in sequence as the diagram scrolls in. */
.dgm__flow > * { opacity: 0; transform: translateY(10px); }

.dgm.is-revealed .dgm__flow > * {
  animation: dgm-in var(--dur-3) var(--ease-out) forwards;
}

.dgm.is-revealed .dgm__flow > *:nth-child(1) { animation-delay: 0ms; }
.dgm.is-revealed .dgm__flow > *:nth-child(2) { animation-delay: 90ms; }
.dgm.is-revealed .dgm__flow > *:nth-child(3) { animation-delay: 170ms; }
.dgm.is-revealed .dgm__flow > *:nth-child(4) { animation-delay: 260ms; }
.dgm.is-revealed .dgm__flow > *:nth-child(5) { animation-delay: 340ms; }
.dgm.is-revealed .dgm__flow > *:nth-child(6) { animation-delay: 430ms; }
.dgm.is-revealed .dgm__flow > *:nth-child(7) { animation-delay: 510ms; }

@keyframes dgm-in {
  to { opacity: 1; transform: none; }
}

.dgm.is-revealed .dgm__join::before {
  animation: dgm-glow 3.2s var(--ease-in-out) infinite;
}

@keyframes dgm-glow {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .dgm__flow > * { opacity: 1; transform: none; animation: none; }
  .dgm.is-revealed .dgm__join::before { animation: none; opacity: 0.85; }
}

/* --------------------------------------------------------------------------
   9. Intelligence Layer — the signature full-bleed diagram section
   -------------------------------------------------------------------------- */

.layer-section { position: relative; overflow: hidden; }

.layer-section__glow {
  width: min(90vw, 1000px);
  height: 520px;
  left: 50%;
  top: 38%;
  transform: translateX(-50%);
  background: radial-gradient(ellipse, rgba(37, 154, 202, 0.2), transparent 70%);
}

.layer-stack {
  position: relative;
  display: grid;
  gap: 0;
  margin-top: clamp(2.5rem, 5vw, 4rem);
}

.layer-tier { position: relative; padding-block: clamp(1.5rem, 3vw, 2.25rem); }

.layer-tier__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-3) var(--space-4);
  margin-bottom: var(--space-5);
}

.layer-tier__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.layer-tier__title {
  font-family: var(--font-display);
  font-size: var(--display-4);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
}

.layer-nodes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 148px), 1fr));
  gap: var(--space-3);
}

.layer-node {
  display: grid;
  place-items: center;
  text-align: center;
  padding: var(--space-4) var(--space-3);
  border-radius: var(--r-sm);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  transition: border-color var(--dur-2) var(--ease-out), color var(--dur-2) var(--ease-out),
              transform var(--dur-2) var(--ease-out);
}

.layer-node:hover {
  border-color: var(--color-border-strong);
  color: var(--color-text-primary);
  transform: translateY(-2px);
}

/* The middle tier — ClearStart's own layer, visually the hero of the stack */
.layer-tier--core {
  border-radius: var(--r-lg);
  border: 1px solid transparent;
  background:
    linear-gradient(var(--color-background-alt), var(--color-background-alt)) padding-box,
    var(--gradient-brand) border-box;
  padding: clamp(1.5rem, 3.2vw, 2.25rem);
  margin-block: var(--space-4);
}

.layer-tier--core .layer-tier__label { color: var(--cs-cyan-400); }

.layer-tier--core .layer-node {
  border-color: rgba(150, 200, 235, 0.22);
  background-color: rgba(255, 255, 255, 0.04);
  color: var(--color-text-primary);
  font-weight: 500;
}

html:not([data-theme="dark"]) .layer-tier--core .layer-node {
  border-color: rgba(12, 58, 102, 0.18);
  background-color: rgba(255, 255, 255, 0.05);
}

/* Connector arrows between tiers. Drawn in CSS rather than SVG so they cannot
   depend on a keyframe or a gradient def defined elsewhere in the document —
   an earlier SVG version silently vanished when its keyframes were removed. */
.layer-connect {
  position: relative;
  height: 46px;
}

.layer-connect::before,
.layer-connect::after { content: ""; position: absolute; }

.layer-connect::before {
  left: 50%;
  top: 4px;
  bottom: 16px;
  width: 2px;
  transform: translateX(-50%);
  border-radius: 2px;
  background: var(--gradient-brand);
}

.layer-connect::after {
  left: 50%;
  bottom: 8px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--color-mint);
  border-bottom: 2px solid var(--color-mint);
  transform: translate(-50%, 0) rotate(45deg);
}

.is-revealed .layer-connect::before { animation: layer-drop 700ms var(--ease-out) backwards; }
.is-revealed .layer-connect::after { animation: layer-fade 500ms var(--ease-out) 260ms backwards; }

@keyframes layer-drop {
  from { transform: translateX(-50%) scaleY(0); transform-origin: top; }
}

@keyframes layer-fade {
  from { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .is-revealed .layer-connect::before,
  .is-revealed .layer-connect::after { animation: none; }
}

/* --------------------------------------------------------------------------
   10. Work / case studies — editorial blocks
   -------------------------------------------------------------------------- */

.work-item {
  display: grid;
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
  padding-block: clamp(2.5rem, 5vw, 4.5rem);
  border-top: 1px solid var(--color-border);
}

@media (min-width: 960px) {
  .work-item { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .work-item--flip .work-item__visual { order: 2; }
}

.work-item__body { display: grid; gap: var(--space-5); align-content: start; }

.work-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.work-item__meta span + span::before {
  content: "/";
  margin-right: var(--space-3);
  color: var(--color-accent);
}

.work-item__title {
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: var(--tracking-display);
}

.work-item__dl { display: grid; gap: var(--space-4); }

.work-item__dl > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-1);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

@media (min-width: 560px) {
  .work-item__dl > div { grid-template-columns: 116px minmax(0, 1fr); gap: var(--space-4); }
}

.work-item__dl dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding-top: 0.28em;
}

.work-item__dl dd { font-size: var(--text-base); line-height: 1.66; color: var(--color-text-secondary); }

/* The write-up runs far longer than the diagram. Centring the diagram left a
   few hundred pixels dead above and below it; sticking it keeps the system in
   view while the reader works down the text. Declared here, after the base
   rules, so nothing later in the cascade overrides the position. */
@media (min-width: 960px) {
  .work-item__visual {
    position: sticky;
    top: calc(var(--header-h) + 2rem);
  }
}

/* ---- client strip ----
   Each cell takes either an <img> of the client's own logo or a wordmark set
   in type (.clients__name), for a client whose file we do not hold yet. */

.clients {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 700px) {
  .clients { grid-auto-flow: column; grid-auto-columns: 1fr; }
}

/* The mark sits in a fixed-height row so the sector labels stay on one line
   across the strip even though the logos are different shapes. */
.clients__item {
  display: grid;
  grid-template-rows: 76px auto;
  align-content: center;
  place-items: center;
  gap: var(--space-2);
  padding: clamp(1.5rem, 3.4vw, 2.25rem) var(--space-5);
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.clients__item:last-child { border-bottom: none; }

@media (min-width: 700px) {
  .clients__item {
    border-bottom: none;
    border-left: 1px solid var(--color-border);
  }
  .clients__item:first-child { border-left: none; }
}

.clients__name {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 1.5vw + 0.8rem, 1.5rem);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  line-height: 1.2;
}

/* Real logo files. Two of the three carry their own brand ground, so these
   run in full colour rather than desaturated — greyscaling a plated mark just
   turns it into a grey box. Balance comes from the per-logo widths set in the
   HTML instead: each mark is sized to roughly the same optical area, so a
   long wordmark sits shorter than a stacked mark and neither dominates.
   width/height on the <img> keep the aspect ratio and reserve the space. */
.clients__logo {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: var(--r-xs);
  opacity: 0.88;
  transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out);
}

.clients__item:hover .clients__logo {
  opacity: 1;
  transform: translateY(-2px);
}

/* Transparent black wordmarks would vanish on an ink ground. */
html[data-theme="dark"] .clients__logo--invert-dark,
.tone-ink .clients__logo--invert-dark { filter: invert(1); }

@media (prefers-reduced-motion: reduce) {
  .clients__item:hover .clients__logo { transform: none; }
}

.clients__sector {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* Editorial notice used where real client detail is withheld */
.notice {
  display: grid;
  gap: var(--space-3);
  padding: clamp(1.25rem, 2.6vw, 1.75rem);
  border-radius: var(--r-md);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  background-color: var(--color-surface);
}

.notice__title {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 600;
}

.notice p { font-size: var(--text-base); color: var(--color-text-secondary); line-height: 1.65; max-width: 72ch; }

/* --------------------------------------------------------------------------
   11. Process — horizontal journey on desktop, vertical on mobile
   -------------------------------------------------------------------------- */

.process { position: relative; }

.process__track {
  position: absolute;
  left: 0;
  right: 0;
  top: 21px;
  height: 1px;
  background: var(--color-border);
}

.process__fill {
  display: block;
  height: 100%;
  background: var(--gradient-brand);
  transform: scaleX(var(--progress, 0));
  transform-origin: left;
  transition: transform 120ms linear;
}

.process__steps { display: grid; gap: var(--space-8); }

@media (min-width: 900px) {
  .process__steps { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: var(--space-5); }
}

.process__step { position: relative; display: grid; gap: var(--space-3); align-content: start; }

.process__marker {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  transition: border-color var(--dur-3) var(--ease-out), color var(--dur-3) var(--ease-out),
              background-color var(--dur-3) var(--ease-out), box-shadow var(--dur-3) var(--ease-out);
}

.process__step.is-active .process__marker {
  border-color: transparent;
  background-color: transparent;
  background-image: var(--gradient-brand);
  /* The gradient must be sized to the border box. Left at the default
     padding-box origin it tiles, and the transparent 1px border then shows a
     wrapped sliver of the opposite end of the ramp — a dark arc on one edge
     and a mint arc on the other. */
  background-origin: border-box;
  background-repeat: no-repeat;
  color: #04121F;
  font-weight: 700;
  box-shadow: 0 0 0 5px rgba(37, 154, 202, 0.13);
}

.process__title { font-family: var(--font-display); font-size: var(--text-lg); font-weight: 600; letter-spacing: var(--tracking-tight); }

.process__text { font-size: var(--text-base); color: var(--color-text-secondary); line-height: 1.62; }

/* Mobile: vertical rail */
@media (max-width: 899px) {
  .process__track { left: 20px; right: auto; top: 0; bottom: 0; width: 1px; height: auto; }
  .process__fill { transform: scaleY(var(--progress, 0)); transform-origin: top; width: 100%; }
  .process__step { padding-left: 64px; }
  .process__marker { position: absolute; left: 0; top: 0; }
}

/* --------------------------------------------------------------------------
   12. Principles — sticky heading, editorial list
   -------------------------------------------------------------------------- */

.principles { display: grid; gap: clamp(2.5rem, 5vw, 4rem); align-items: start; }

@media (min-width: 980px) {
  .principles { grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr); gap: clamp(3rem, 6vw, 6rem); }
  .principles__aside { position: sticky; top: calc(var(--header-h) + 3rem); }
}

.principles__aside { display: grid; gap: var(--space-5); align-content: start; }

.principles__list { display: grid; border-top: 1px solid var(--color-border); }

.principle {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-4) var(--space-5);
  padding: clamp(1.5rem, 3vw, 2rem) 0;
  border-bottom: 1px solid var(--color-border);
}

.principle__num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  color: var(--color-accent);
  padding-top: 0.5em;
}

.principle__body { display: grid; gap: var(--space-2); }

.principle__title { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 600; letter-spacing: var(--tracking-tight); }

.principle__text { font-size: var(--text-base); color: var(--color-text-secondary); line-height: 1.65; }

/* --------------------------------------------------------------------------
   13. Insights / editorial cards
   -------------------------------------------------------------------------- */

.insight-list { display: grid; border-top: 1px solid var(--color-border); }

.insight {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-4) var(--space-6);
  align-items: center;
  padding: clamp(1.5rem, 3vw, 2.25rem) 0;
  border-bottom: 1px solid var(--color-border);
  transition: padding-left var(--dur-3) var(--ease-out);
}

@media (min-width: 760px) {
  .insight:hover { padding-left: clamp(0.75rem, 2vw, 1.25rem); }
}

.insight__body { display: grid; gap: var(--space-3); }

.insight__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.insight__title {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.4vw, 1.7rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: var(--tracking-tight);
}

.insight__excerpt { font-size: var(--text-base); color: var(--color-text-secondary); line-height: 1.62; max-width: 68ch; }

/* The whole row is the target, so the title carries a stretched link. */
.insight__title a::after { content: ""; position: absolute; inset: 0; }

.insight .outcome__arrow { align-self: center; }

.insight:hover .outcome__arrow,
.insight:focus-within .outcome__arrow { transform: translateX(5px); color: var(--color-accent); }

.insight:hover .insight__title,
.insight:focus-within .insight__title { color: var(--color-primary); }

.insight__title { transition: color var(--dur-2) var(--ease-out); }

/* Category leads, then slash-separated meta — matching the article header. */
.insight__meta > :first-child { color: var(--color-accent); }

.insight__meta > * + *::before {
  content: "/";
  margin-right: var(--space-3);
  color: var(--color-border-strong);
}

/* Brand rule that slides in, matching the outcome rows on the homepage. */
.insight::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: -1px;
  width: 3px;
  background: var(--gradient-brand);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--dur-3) var(--ease-out);
}

.insight:hover::before,
.insight:focus-within::before { transform: scaleY(1); }

/* Honest empty state — used until the first pieces are published */
.empty-state {
  display: grid;
  gap: var(--space-5);
  justify-items: start;
  padding: clamp(2rem, 5vw, 3.5rem);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--r-lg);
  background-color: var(--color-surface);
}

.empty-state__title { font-family: var(--font-display); font-size: var(--display-4); font-weight: 600; }

/* Topic list for the editorial programme */
.topics { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 0; border-top: 1px solid var(--color-border); }

.topic {
  display: grid;
  gap: var(--space-2);
  align-content: start;
  padding: var(--space-5) var(--space-5) var(--space-5) 0;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 700px) {
  .topic { border-left: 1px solid var(--color-border); padding-left: var(--space-5); }
  .topic:first-child { border-left: none; padding-left: 0; }
}

.topic__title { font-family: var(--font-display); font-size: var(--text-md); font-weight: 600; }
.topic__text { font-size: var(--text-base); color: var(--color-text-secondary); line-height: 1.6; }

/* --------------------------------------------------------------------------
   14. Final CTA
   -------------------------------------------------------------------------- */

.finale { position: relative; overflow: hidden; }

.finale__glow {
  width: min(100vw, 1100px);
  height: 640px;
  left: 50%;
  bottom: -46%;
  transform: translateX(-50%);
  background: radial-gradient(ellipse, rgba(37, 154, 202, 0.26), transparent 68%);
}

.finale__inner { position: relative; z-index: 2; display: grid; gap: clamp(2rem, 4vw, 3rem); }

.finale__title {
  font-size: clamp(2.2rem, 4.4vw + 0.55rem, 4.4rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.038em;
  max-width: 24ch;
}

.finale__lead { font-size: var(--text-lg); color: var(--color-text-secondary); max-width: 54ch; line-height: var(--leading-relaxed); }

.finale__foot {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5) var(--space-8);
  align-items: center;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.finale__contact {
  display: grid;
  gap: var(--space-1);
}

.finale__contact dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.finale__contact dd a { font-size: var(--text-md); font-weight: 500; transition: color var(--dur-2) var(--ease-out); }
.finale__contact dd a:hover { color: var(--color-accent); }

/* --------------------------------------------------------------------------
   15. Capabilities page — deep sections
   -------------------------------------------------------------------------- */

.cap-block {
  display: grid;
  gap: clamp(2rem, 4vw, 3.5rem);
  padding-block: clamp(3rem, 6vw, 5.5rem);
  border-top: 1px solid var(--color-border);
  align-items: start;
}

@media (min-width: 1000px) {
  .cap-block { grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr); gap: clamp(2.5rem, 5vw, 5rem); }
}

.cap-block__head { display: grid; gap: var(--space-5); align-content: start; }

@media (min-width: 1000px) {
  .cap-block__head { position: sticky; top: calc(var(--header-h) + 3rem); }
}

.cap-block__title {
  font-size: clamp(1.7rem, 3.4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: var(--tracking-display);
}

.cap-block__body { display: grid; gap: var(--space-6); }

.cap-def { display: grid; gap: var(--space-5); }

.cap-def > div { display: grid; gap: var(--space-2); padding-top: var(--space-4); border-top: 1px solid var(--color-border); }

.cap-def dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-accent);
}

.cap-def dd { font-size: var(--text-md); line-height: var(--leading-relaxed); color: var(--color-text-secondary); }

.cap-services { display: grid; gap: 0; }

.cap-service {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
}

.cap-service:first-child { border-top: 1px solid var(--color-border); }

.cap-service__name { font-family: var(--font-display); font-size: var(--text-md); font-weight: 600; }
.cap-service__text { font-size: var(--text-base); color: var(--color-text-secondary); line-height: 1.6; }

/* --------------------------------------------------------------------------
   16. About page
   -------------------------------------------------------------------------- */

.about-split { display: grid; gap: clamp(2.5rem, 5vw, 4.5rem); align-items: start; }

@media (min-width: 960px) {
  .about-split { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); }
}

.value-grid { display: grid; border-top: 1px solid var(--color-border); }

@media (min-width: 760px) {
  .value-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.value {
  display: grid;
  gap: var(--space-3);
  align-content: start;
  padding: clamp(1.5rem, 3vw, 2.25rem) 0;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 760px) {
  .value { padding-inline: var(--space-6); border-left: 1px solid var(--color-border); }
  .value:nth-child(odd) { border-left: none; padding-left: 0; }
  .value:nth-child(even) { padding-right: 0; }
}

/* ---- founder ---- */

.founder {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3.5rem);
  align-items: center;
}

@media (min-width: 760px) {
  .founder { grid-template-columns: minmax(0, 0.62fr) minmax(0, 1fr); }
}

.founder__portrait {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  max-width: 340px;
  width: 100%;
}

.founder__portrait img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.founder__body { display: grid; gap: var(--space-4); align-content: center; }

.founder__name {
  font-family: var(--font-display);
  font-size: var(--display-4);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.founder__role {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-accent);
}

.founder__bio {
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  max-width: 58ch;
}

.founder__bio + .founder__bio { margin-top: var(--space-2); }

.value__num { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: var(--tracking-label); color: var(--color-accent); }
.value__title { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 600; letter-spacing: var(--tracking-tight); }
.value__text { font-size: var(--text-base); color: var(--color-text-secondary); line-height: 1.65; }

/* --------------------------------------------------------------------------
   17. Contact page
   -------------------------------------------------------------------------- */

.contact-grid { display: grid; gap: clamp(2.5rem, 5vw, 4.5rem); align-items: start; }

@media (min-width: 980px) {
  .contact-grid { grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(3rem, 6vw, 5.5rem); }
}

.contact-aside { display: grid; gap: var(--space-6); align-content: start; }

.contact-aside__list { display: grid; gap: var(--space-5); }

.contact-aside__list > div { display: grid; gap: var(--space-2); padding-top: var(--space-4); border-top: 1px solid var(--color-border); }

.contact-aside__list dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.contact-aside__list dd { font-size: var(--text-md); }
.contact-aside__list dd a { transition: color var(--dur-2) var(--ease-out); }
.contact-aside__list dd a:hover { color: var(--color-accent); }

.contact-form { display: grid; gap: var(--space-5); }

.form-row { display: grid; gap: var(--space-5); }

@media (min-width: 640px) {
  .form-row--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.form-foot {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.form-foot__note { font-size: var(--text-sm); color: var(--color-text-muted); max-width: 44ch; }

/* Honeypot — clipped rather than pushed off-canvas, so it adds no geometry
   to the page. Kept out of the accessibility tree via aria-hidden/tabindex. */
.hp-field {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   19. Field notes — article pages
   A reading column with deliberate interruptions: diagrams, figures, pull
   quotes and callouts break the measure every few paragraphs so a long note
   never reads as a wall of text.
   -------------------------------------------------------------------------- */

.article-hero { position: relative; overflow: hidden; }

.article-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
  align-items: center;
}

@media (min-width: 1000px) {
  .article-hero__inner { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); }
}

.article-hero__copy { display: grid; gap: var(--space-5); align-content: start; }

.article-hero__title {
  font-size: clamp(2rem, 3.6vw + 0.6rem, 3.5rem);
  line-height: 1.06;
  letter-spacing: var(--tracking-display);
  font-weight: 700;
}

.article-hero__lead {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  max-width: 54ch;
}

/* category · read time · date */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.article-meta__sep { color: var(--color-accent); }

.article-meta__cat { color: var(--color-accent); }

.article-hero__motif { width: 100%; max-width: 460px; margin-inline: auto; }
.article-hero__motif svg { width: 100%; height: auto; overflow: visible; }

/* --------------------------------------------------------------------------
   Reading column
   -------------------------------------------------------------------------- */

.prose {
  max-width: 66ch;
  margin-inline: auto;
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.prose > * + * { margin-top: var(--space-5); }

.prose h2 {
  font-size: clamp(1.5rem, 2.2vw + 0.9rem, 2.1rem);
  line-height: 1.16;
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  margin-top: clamp(3rem, 6vw, 4.5rem);
}

.prose h3 {
  font-size: var(--text-xl);
  color: var(--color-text-primary);
  margin-top: var(--space-8);
}

.prose strong { color: var(--color-text-primary); font-weight: 600; }

.prose a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

/* Direct children only. Callouts and comparison blocks sit inside .prose and
   bring their own list styling — a descendant selector here would outrank it. */
.prose > ul, .prose > ol { display: grid; gap: var(--space-3); padding-left: 0; list-style: none; }

/* Markers are positioned, not laid out as grid columns: prose items mix
   <strong> lead-ins with running text, and a grid would put each inline run
   in its own cell. */
.prose > ul > li, .prose > ol > li { position: relative; padding-left: 2.25rem; }

.prose > ul > li::before {
  content: "";
  position: absolute;
  left: 0.5rem;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gradient-brand);
}

.prose > ol { counter-reset: prose-item; }

.prose > ol > li::before {
  counter-increment: prose-item;
  content: counter(prose-item, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.3em;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

/* Elements that break the measure to full section width */
.breakout {
  max-width: min(100%, 1040px);
  margin-inline: auto;
  margin-block: clamp(2.5rem, 5vw, 4rem);
}

/* --------------------------------------------------------------------------
   Pull quote
   -------------------------------------------------------------------------- */

.pullquote {
  margin-block: clamp(2.5rem, 5vw, 4rem);
  padding-left: clamp(1.25rem, 3vw, 2rem);
  border-left: 3px solid transparent;
  border-image: var(--gradient-brand) 1;
  max-width: 30rem;
}

.pullquote p {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 1.8vw + 0.9rem, 2rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.pullquote--wide { max-width: 38rem; }

/* --------------------------------------------------------------------------
   Figures — counts drawn from the note itself, never external claims
   -------------------------------------------------------------------------- */

.figure-row {
  display: grid;
  gap: var(--space-5);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  border: 1px solid var(--color-border);
  border-radius: var(--r-lg);
  background-color: var(--color-surface);
}

@media (min-width: 700px) {
  .figure-row { grid-auto-flow: column; grid-auto-columns: 1fr; gap: var(--space-6); }
}

.figure { display: grid; gap: var(--space-2); align-content: start; }

.figure + .figure { padding-top: var(--space-5); border-top: 1px solid var(--color-border); }

@media (min-width: 700px) {
  .figure + .figure {
    padding-top: 0;
    padding-left: var(--space-6);
    border-top: none;
    border-left: 1px solid var(--color-border);
  }
}

.figure__value {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 3vw + 1.4rem, 3.75rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  width: fit-content;
}

.tone-ink .figure__value {
  background: linear-gradient(100deg, var(--cs-blue-500) 0%, var(--cs-cyan-400) 55%, var(--cs-mint-300) 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

.figure__label {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.3;
}

.figure__note { font-size: var(--text-base); color: var(--color-text-muted); line-height: 1.55; }

/* --------------------------------------------------------------------------
   Callout
   -------------------------------------------------------------------------- */

.callout {
  display: grid;
  gap: var(--space-3);
  padding: clamp(1.25rem, 2.6vw, 1.75rem);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--r-md);
  background-color: var(--color-surface);
}

.callout__title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-accent);
}

.callout p, .callout li { font-size: var(--text-base); line-height: 1.65; color: var(--color-text-secondary); }

.callout > ul { display: grid; gap: var(--space-2); list-style: none; }

.callout > ul > li { position: relative; padding-left: 1.25rem; }

.callout > ul > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Two-column comparison
   -------------------------------------------------------------------------- */

.compare {
  display: grid;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--r-lg);
  overflow: hidden;
}

@media (min-width: 760px) {
  .compare { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.compare__col { padding: clamp(1.25rem, 2.6vw, 1.75rem); }

.compare__col + .compare__col { border-top: 1px solid var(--color-border); }

@media (min-width: 760px) {
  .compare__col + .compare__col { border-top: none; border-left: 1px solid var(--color-border); }
}

.compare__col--good { background-color: var(--color-surface); }

.compare__title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.compare__col--good .compare__title { color: var(--color-accent); }

.compare__list { display: grid; gap: var(--space-3); }

.compare__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  align-items: baseline;
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.compare__list li::before {
  content: "";
  width: 14px;
  height: 1.5px;
  background: var(--color-text-muted);
  transform: translateY(-4px);
}

.compare__col--good .compare__list li::before { background: var(--gradient-brand); height: 2px; }

/* --------------------------------------------------------------------------
   Article footer — takeaways, byline, next note
   -------------------------------------------------------------------------- */

.takeaways { display: grid; gap: var(--space-5); }

.takeaways__list { display: grid; gap: 0; border-top: 1px solid var(--color-border); }

.takeaways__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-4);
  align-items: baseline;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-md);
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.takeaways__list li::before {
  content: "";
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gradient-brand);
  transform: translateY(-1px);
  flex: none;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8.4 6.3 11.6 13 5' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8.4 6.3 11.6 13 5' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
}

.byline {
  display: grid;
  gap: var(--space-3);
  padding: clamp(1.5rem, 3vw, 2rem);
  border: 1px solid var(--color-border);
  border-radius: var(--r-lg);
  background-color: var(--color-surface);
}

.byline__title { font-family: var(--font-display); font-size: var(--text-md); font-weight: 600; color: var(--color-text-primary); }
.byline p { font-size: var(--text-base); line-height: 1.65; color: var(--color-text-secondary); }

/* next / previous note */
.note-next {
  display: grid;
  gap: var(--space-4);
  padding: clamp(1.5rem, 3vw, 2rem);
  border: 1px solid var(--color-border);
  border-radius: var(--r-lg);
  background-color: var(--color-surface);
  position: relative;
  transition: border-color var(--dur-2) var(--ease-out);
}

.note-next:hover { border-color: var(--color-border-strong); }

.note-next__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.note-next__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.note-next__title a::after { content: ""; position: absolute; inset: 0; }

/* --------------------------------------------------------------------------
   Motifs — small original illustrations that head each note
   -------------------------------------------------------------------------- */

/* csEdgeGrad uses object-bounding-box units so one definition can serve shapes
   in different coordinate spaces. The trade-off: a perfectly vertical or
   horizontal path has a zero-area bbox, the gradient cannot resolve, and the
   stroke silently does not paint. Keep motif paths at an angle or curved. */
.motif__ring { fill: none; stroke: url(#csEdgeGrad); stroke-width: 1.5; opacity: 0.6; }
.motif__line { fill: none; stroke: url(#csEdgeGrad); stroke-width: 2; stroke-linecap: round; }
.motif__line--faint { opacity: 0.32; stroke-width: 1.25; }
.motif__dot { fill: var(--cs-blue-500); }
.motif__dot--accent { fill: var(--cs-cyan-400); }
.motif__dot--mint { fill: var(--cs-mint-300); }
.motif__plate { fill: rgba(12, 32, 54, 0.7); stroke: url(#csEdgeGrad); stroke-width: 1.25; }

.motif__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  fill: #8397AD;
}

.motif__bar { fill: url(#csEdgeGrad); }
.motif__bar--faint { fill: rgba(150, 200, 235, 0.18); }

@media (prefers-reduced-motion: no-preference) {
  .article-hero__motif [data-motif-pulse] {
    animation: motif-pulse 4.5s var(--ease-in-out) infinite;
    transform-origin: center;
  }
  @keyframes motif-pulse {
    0%, 100% { opacity: 0.35; }
    50% { opacity: 1; }
  }
}