/* =====================================================================
   Extended sections - validation cohorts, audit, NHS phased pilot,
   integrations, pricing, contact.
   ===================================================================== */

/* Validation headline */
.val-headline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--hair-soft);
  background: var(--hair-soft);
  gap: 1px;
  border-radius: 2px;
  overflow: hidden;
}
@media (max-width: 900px) { .val-headline { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .val-headline { grid-template-columns: 1fr; } }
.val-cell {
  background: var(--bg-rise);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.val-v {
  font-family: var(--f-display);
  font-size: clamp(48px, 6vw, 76px);
  line-height: 0.95;
  letter-spacing: -0.045em;
  color: var(--ink);
}
.val-v-acc { color: var(--acc); }
.val-v-acc-soft { color: var(--acc-soft); }
.val-v-warn { color: var(--warn); }
.val-lbl {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-4);
}
.val-det { font-size: 12.5px; line-height: 1.6; color: var(--ink-3); }

/* Cohort grid */
.cohort-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
@media (max-width: 1100px) { .cohort-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 700px)  { .cohort-grid { grid-template-columns: 1fr; } }
.cohort-card {
  display: flex; flex-direction: column; gap: 14px;
  padding: 24px;
  border: 1px solid var(--hair-soft);
  background: var(--bg-rise);
  border-radius: 4px;
  height: 100%;
}
.cohort-head { display: flex; justify-content: space-between; align-items: baseline; }
.cohort-code {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--acc);
}
.cohort-n { font-family: var(--f-mono); font-size: 11px; color: var(--ink-4); }
.cohort-name {
  font-family: var(--f-display);
  font-size: 19px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.cohort-stats {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 16px;
  border-block: 1px solid var(--hair-soft);
  padding-block: 12px;
  margin: 0;
  font-size: 12.5px;
}
.cohort-stats dt { color: var(--ink-4); margin: 0; }
.cohort-stats dd { color: var(--ink); margin: 0; text-align: right; }
.cohort-drivers-lbl {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-4);
}
.cohort-drivers { display: flex; flex-wrap: wrap; gap: 6px; }
.cohort-driver {
  font-family: var(--f-mono);
  font-size: 10.5px;
  padding: 3px 8px;
  border: 1px solid var(--hair);
  background: var(--bg-rise-2);
  color: var(--acc-soft);
  border-radius: 2px;
}
.cohort-plaus { font-size: 12.5px; line-height: 1.6; color: var(--ink-3); margin: 0; }
.cohort-src {
  margin-top: auto;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-4);
}

/* Datasets */
.dataset-table {
  border: 1px solid var(--hair-soft);
  border-radius: 4px;
  overflow: hidden;
}
.dataset-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1.4fr;
  gap: 28px;
  padding: 22px 26px;
  background: var(--bg-rise);
}
.dataset-row + .dataset-row { border-top: 1px solid var(--hair-soft); }
@media (max-width: 900px) {
  .dataset-row { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 540px) {
  .dataset-row { grid-template-columns: 1fr; }
}
.dataset-tag {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-4);
}
.dataset-name {
  font-family: var(--f-display);
  font-size: 18px;
  line-height: 1.2;
  color: var(--ink);
  margin-top: 4px;
}
.dataset-val { font-size: 13px; color: var(--ink-2); margin-top: 4px; }
.dataset-src { font-family: var(--f-mono); font-size: 10.5px; color: var(--ink-4); margin-top: 4px; }

/* Audit */
.audit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
@media (max-width: 900px) { .audit-grid { grid-template-columns: 1fr; } }
.audit-card {
  padding: 32px;
  background: var(--bg-rise);
  border: 1px solid var(--hair-soft);
  border-radius: 4px;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.audit-tag {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--acc);
}
.audit-title {
  font-family: var(--f-display);
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--ink);
}
.audit-body { font-size: 13px; line-height: 1.65; color: var(--ink-3); margin: 0; }

/* NHS phases */
.phase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 800px) { .phase-grid { grid-template-columns: 1fr; } }
.phase-card {
  display: flex; flex-direction: column; gap: 16px;
  padding: 32px;
  background: var(--bg-rise);
  border: 1px solid var(--hair-soft);
  border-radius: 4px;
  height: 100%;
}
.phase-final {
  grid-column: span 2;
  border: 2px solid var(--ink-2);
}
@media (max-width: 800px) { .phase-final { grid-column: span 1; } }
.phase-head { display: flex; justify-content: space-between; align-items: baseline; }
.phase-n {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 40px;
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--acc-soft);
}
.phase-label {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--acc);
}
.phase-title {
  font-family: var(--f-display);
  font-size: 24px;
  line-height: 1.18;
  letter-spacing: -0.018em;
  color: var(--ink);
  margin: 0;
}
.phase-body { font-size: 13.5px; line-height: 1.65; color: var(--ink-3); margin: 0; }
.phase-deliverable {
  margin-top: auto;
  padding: 10px 14px;
  border: 1px solid var(--hair);
  background: var(--bg-rise-2);
  border-radius: 3px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--acc-soft);
}

/* Integrations */
.int-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
@media (max-width: 900px) { .int-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .int-grid { grid-template-columns: 1fr; } }
.int-card {
  padding: 22px;
  background: var(--bg-rise);
  border: 1px solid var(--hair-soft);
  border-radius: 3px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
}
.int-label {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--acc);
}
.int-body { font-size: 13px; line-height: 1.6; color: var(--ink-3); margin: 0; }

/* Status honesty */
.status-honesty {
  margin-top: 48px;
  padding: 32px;
  border: 1px solid color-mix(in oklch, var(--warn), transparent 60%);
  background: color-mix(in oklch, var(--warn), transparent 92%);
  border-radius: 4px;
}
.status-honesty p {
  margin: 12px 0 0;
  max-width: 80ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-2);
}

/* Pricing */
.price-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 800px) { .price-grid { grid-template-columns: 1fr; } }
.price-card {
  padding: 32px;
  background: var(--bg-rise);
  border: 1px solid var(--hair-soft);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.price-mode {
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--acc);
}
.price-title {
  font-family: var(--f-display);
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -0.018em;
  color: var(--ink);
  margin: 0;
}
.price-figure { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; padding-block: 8px; border-block: 1px solid var(--hair-soft); }
.price-amt {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 56px;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--ink);
}
.price-per { font-family: var(--f-mono); font-size: 11px; color: var(--ink-4); letter-spacing: 0.04em; }
.price-body { font-size: 13.5px; line-height: 1.65; color: var(--ink-3); margin: 0; }
.price-note { font-size: 11.5px; color: var(--ink-4); margin-top: auto; }

/* Engine deep-dive disclosure. Native <details>, styled to match brand.
   Collapses 4 technical subsections (algorithm, stack, VCF parser, KRAS run)
   so the narrative reads cleanly by default. Engineer-readers expand. */
.kg-disclosure {
  border-top: 1px solid var(--hair-soft);
  border-bottom: 1px solid var(--hair-soft);
  padding-block: 4px;
}
.kg-disclosure > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  user-select: none;
  flex-wrap: wrap;
  min-height: 44px;
  transition: color 0.25s var(--ease-out);
}
.kg-disclosure > summary::-webkit-details-marker { display: none; }
.kg-disclosure > summary::marker { content: ""; }
.kg-disclosure > summary:hover { color: var(--ink); }
.kg-disclosure > summary:focus-visible {
  outline: 2px solid var(--acc);
  outline-offset: 4px;
}
.kg-disclosure-label { color: var(--acc); }
.kg-disclosure-meta { color: var(--ink-4); flex: 1 1 auto; }
.kg-disclosure-caret {
  display: inline-block;
  font-family: var(--f-sans);
  font-size: 18px;
  letter-spacing: 0;
  color: var(--acc);
  transition: transform 0.3s var(--ease-out);
}
.kg-disclosure[open] > summary .kg-disclosure-caret {
  transform: rotate(180deg);
}
.kg-disclosure[open] > summary {
  border-bottom: 1px solid var(--hair-soft);
  margin-bottom: 24px;
}
.kg-disclosure-body { padding-bottom: 32px; }

/* KG canvas figure - container holds the canvas; height is set responsively
   via the KGCanvas component default. Deeper canvas in the engine section
   gets a slightly larger height envelope. */
.kg-fig { overflow: hidden; }
.kg-fig-deep { min-height: clamp(360px, 58vw, 620px); }
@media (max-width: 700px) {
  .kg-fig-deep { min-height: clamp(320px, 70vw, 460px); }
}

/* Contact form */
.contact-form {
  display: grid;
  gap: 18px;
  padding: 32px 36px;
  border: 1px solid var(--hair-soft);
  background: var(--bg-rise);
  border-radius: 4px;
  margin-bottom: 40px;
}
.cf-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
@media (max-width: 720px) { .cf-row { grid-template-columns: 1fr; } }
.cf-field { display: flex; flex-direction: column; gap: 6px; }
.cf-label {
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-4);
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  appearance: none;
  width: 100%;
  font: inherit;
  font-family: var(--f-sans, inherit);
  font-size: 15px;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--hair);
  border-radius: 3px;
  padding: 12px 14px;
  transition: border-color 0.2s var(--ease-out), background 0.2s var(--ease-out);
}
.contact-form textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.55;
  font-family: var(--f-sans, inherit);
}
.contact-form select {
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-3) 50%),
                    linear-gradient(135deg, var(--ink-3) 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 12px) 50%;
  background-size: 6px 6px;
  background-repeat: no-repeat;
  padding-right: 32px;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--acc);
  background: var(--bg-deep);
}
.contact-form input:disabled,
.contact-form select:disabled,
.contact-form textarea:disabled,
.contact-form .btn:disabled { opacity: 0.6; cursor: progress; }
.cf-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 6px;
  flex-wrap: wrap;
}
.cf-aside { font-size: 12.5px; color: var(--ink-4); }
.cf-aside .link { color: var(--ink-2); }
.cf-error {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--warn, #c44);
  padding: 10px 14px;
  border: 1px solid var(--warn, #c44);
  border-radius: 3px;
  background: color-mix(in oklab, var(--warn, #c44) 8%, transparent);
}

/* Contact specifics */
.email-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 36px;
  border: 2px solid var(--ink);
  background: var(--bg-rise);
  border-radius: 4px;
  text-decoration: none;
  margin-bottom: 32px;
  transition: all 0.4s var(--ease-out);
}
.email-cta:hover { background: var(--ink); color: var(--bg); }
.email-cta:hover .email-text { color: var(--bg); }
.email-cta:hover .email-arrow { color: var(--acc); transform: translateX(6px); }
.email-text {
  font-family: var(--f-display);
  font-size: clamp(22px, 3.4vw, 36px);
  letter-spacing: -0.02em;
  color: var(--ink);
  transition: color 0.3s var(--ease-out);
}
.email-arrow { color: var(--acc); font-size: 22px; transition: transform 0.3s var(--ease-out); }

.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 32px;
  margin-top: 16px;
}
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-meta-card {
  padding: 32px;
  background: var(--bg-rise);
  border: 1px solid var(--hair-soft);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.eyebrow-acc {
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--acc);
}
.contact-meta-title {
  font-family: var(--f-display);
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.018em;
  color: var(--ink);
  margin: 10px 0 12px;
}
.contact-meta-body { font-size: 13px; line-height: 1.65; color: var(--ink-3); margin: 0; }
.contact-meta-row {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  border-top: 1px solid var(--hair-soft);
  padding-top: 18px;
  font-size: 13.5px;
  color: var(--ink-2);
}

.no-trio { display: flex; flex-direction: column; gap: 10px; }
.no-card {
  padding: 22px 24px;
  background: var(--bg-rise);
  border: 1px solid var(--hair-soft);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.no-tag {
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--warn);
}
.no-title {
  font-family: var(--f-display);
  font-size: 19px;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0;
}
.no-body { font-size: 13px; line-height: 1.6; color: var(--ink-3); margin: 0; }

/* Explainer CTA */
.explainer-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 40px;
  padding: 28px 36px;
  background:
    linear-gradient(135deg, color-mix(in oklch, var(--acc), transparent 88%), transparent 60%),
    var(--bg-rise);
  border: 1px solid color-mix(in oklch, var(--acc), transparent 55%);
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.4s var(--ease-out);
}
.explainer-cta:hover { border-color: var(--acc); transform: translateY(-1px); }
.explainer-title {
  font-family: var(--f-display);
  font-size: clamp(20px, 2.4vw, 28px);
  letter-spacing: -0.018em;
  color: var(--ink);
  margin-top: 8px;
}
.explainer-sub { font-size: 13px; color: var(--ink-3); margin-top: 4px; }
.explainer-arrow { color: var(--acc); font-size: 28px; transition: transform 0.3s var(--ease-out); }
.explainer-cta:hover .explainer-arrow { transform: translate(4px, -4px); }