/* A simplified reading of a verified fictional case, not a product editor.
   The diagram and its surroundings share the dark/warm palette.
   All controls advance only on a visitor action. */

.proof-section.section-spacing {
  padding-block: clamp(72px,7.7vw,112px);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.proof-section .proof-heading,
.scope-section .scope-heading {
  display: grid;
  grid-template-columns: minmax(0,1.18fr) minmax(0,.82fr);
  align-items: end;
  gap: 20px clamp(40px,6vw,88px);
}

.proof-section .proof-heading .eyebrow,
.scope-section .scope-heading .eyebrow {
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 10px;
  line-height: 1.7;
  font-weight: 600;
  letter-spacing: 1.5px;
}

.proof-section .proof-heading>.eyebrow,
.scope-section .scope-heading>.eyebrow {
  grid-column: 1/-1;
  margin-bottom: 0;
}

.proof-section .proof-heading h2,
.scope-section .scope-heading h2 {
  max-width: 20ch;
  color: var(--ink);
  font-size: clamp(35px,3.6vw,50px);
  font-weight: 500;
  line-height: 1.16;
  letter-spacing: -1.55px;
  text-wrap: balance;
}

.proof-section .proof-heading>p:not(.eyebrow),
.scope-section .scope-heading>p:not(.eyebrow) {
  max-width: 49ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.proof-section .proof-layout {
  display: grid;
  grid-template-columns: minmax(0,2.25fr) minmax(0,1fr);
  align-items: start;
  gap: clamp(28px,3.2vw,46px);
  margin-top: 42px;
}

.proof-section .proof-media,
.proof-section .proof-reading { min-width: 0; }

.proof-section .proof-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 9px 24px;
  min-height: 52px;
  padding: 14px 17px;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 4px 4px 0 0;
  background: var(--surface);
  color: var(--muted);
  font-size: 11px;
  line-height: 1.65;
}

.proof-section .proof-toolbar>span:first-child,
.proof-section .proof-toolbar .proof-kicker {
  color: var(--accent-ink);
  font-size: 9px;
  font-weight: 550;
  letter-spacing: 1.2px;
  text-transform: uppercase;
}

.proof-section .proof-toolbar>span:last-child {
  max-width: 40ch;
  font-variant-numeric: tabular-nums;
}

.proof-section .proof-media figure {
  margin: 0;
  min-width: 0;
}

.proof-section .proof-media figure>a {
  display: block;
  border-radius: 0 0 4px 4px;
}

.proof-section .proof-media figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
  object-fit: contain;
  object-position: center;
  border: 1px solid var(--line);
  border-radius: 0 0 4px 4px;
  background: var(--surface);
  filter: none;
}

.proof-section .proof-media figcaption {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 20px;
  padding: 12px 2px 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.8;
}

.proof-section .proof-media figcaption a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  color: var(--accent-ink);
  text-decoration: underline;
  text-decoration-color: var(--accent-border);
  text-underline-offset: 5px;
  font-size: 11px;
}

.proof-section .proof-controls {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  margin-top: 0;
  border-block: 1px solid var(--line);
}

.proof-section .proof-controls button {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-width: 0;
  min-height: 76px;
  padding: 20px 15px 18px;
  border: 0;
  border-top: 2px solid transparent;
  border-right: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  text-align: left;
}

.proof-section .proof-controls button:last-child { border-right: 0; }

.proof-section .proof-controls button>span {
  flex-shrink: 0;
  padding-top: 2px;
  color: var(--accent);
  font-size: 10px;
  line-height: 1.6;
  font-variant-numeric: tabular-nums;
  letter-spacing: .5px;
}

.proof-section .proof-controls button>strong {
  display: block;
  min-width: 0;
  font-size: 12px;
  line-height: 1.6;
  font-weight: 550;
}

.proof-section .proof-controls button[aria-pressed="true"] {
  border-top-color: var(--accent);
  background: var(--surface-raised);
  color: var(--ink);
}

.proof-section .proof-controls button:is(:hover,:focus-visible) {
  color: var(--ink);
  background: var(--accent-wash);
}

.proof-section .proof-controls button:focus-visible {
  z-index: 1;
  outline-offset: -4px;
}

.proof-section .proof-reading {
  padding-top: 19px;
  border-top: 1px solid var(--accent-border);
}

.proof-section .proof-reading>small {
  display: block;
  color: var(--accent);
  font-size: 10px;
  line-height: 1.7;
  letter-spacing: 1.2px;
  text-transform: uppercase;
}

.proof-section .proof-reading>h3 {
  max-width: 22ch;
  margin-top: 18px;
  color: var(--ink);
  font-size: clamp(25px,2.35vw,33px);
  font-weight: 500;
  line-height: 1.23;
  letter-spacing: -.9px;
  text-wrap: balance;
}

.proof-section .proof-reading>p {
  max-width: 48ch;
  margin-top: 19px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.proof-section .proof-findings {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
  border-top: 1px solid var(--line);
}

.proof-section .proof-findings>li {
  position: relative;
  padding: 13px 0 13px 18px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 12px;
  line-height: 1.8;
}

.proof-section .proof-findings>li::before {
  content: '';
  position: absolute;
  top: 21px;
  left: 0;
  width: 5px;
  height: 5px;
  border: 1px solid var(--accent-border);
  border-radius: 50%;
}

.proof-section .proof-verdict {
  margin-top: 24px;
  padding-left: 15px;
  border-left: 2px solid var(--accent-border);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.85;
}

.proof-section .proof-verdict>strong {
  display: block;
  margin-bottom: 7px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 550;
}

.proof-section .proof-verdict p {
  color: inherit;
  font-size: inherit;
  line-height: inherit;
}

.proof-section[data-proof-step="2"] .proof-verdict {
  border-left-color: var(--accent);
  color: var(--ink);
}

.proof-section .proof-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 40px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.proof-section .proof-footer>p {
  max-width: 73ch;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.8;
}

.proof-section .proof-footer>a {
  display: inline-flex;
  align-items: center;
  gap: 22px;
  min-height: 44px;
  flex-shrink: 1;
  max-width: 100%;
  color: var(--accent-ink);
  font-size: 13px;
}

.proof-section .proof-output {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  gap: 36px;
  margin: 32px 0 0;
  padding: 24px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.proof-section .proof-output>li { min-width: 0; }

.proof-section .proof-output :is(h3,strong) {
  display: block;
  color: var(--ink);
  font: 550 15px/1.5 'Manrope','Segoe UI',Arial,sans-serif;
  letter-spacing: -.2px;
}

.proof-section .proof-output p {
  max-width: 38ch;
  margin-top: 9px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.85;
}

.proof-disclosure {
  margin-top: 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.proof-disclosure>summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 60px;
  padding-block: 16px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
  cursor: pointer;
  list-style: none;
}

.proof-disclosure>summary::-webkit-details-marker { display: none; }
.proof-disclosure>summary>span[aria-hidden] { color: var(--accent); font-size: 20px; }
.proof-disclosure[open]>summary>span[aria-hidden] { transform: rotate(45deg); }
.proof-disclosure>summary:is(:hover,:focus-visible) { color: var(--ink); }

.proof-disclosure>div {
  max-width: 86ch;
  padding: 4px 0 22px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.85;
}

.proof-disclosure>div :is(p,ul) { margin-bottom: 12px; }
.proof-disclosure>div :last-child { margin-bottom: 0; }
.proof-disclosure a { color: var(--accent-ink); text-decoration: underline; text-underline-offset: 4px; }
.proof-disclosure :is(code,a) { overflow-wrap: anywhere; }

.scope-section.section-spacing {
  padding-block: clamp(72px,7.7vw,112px);
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.scope-section .scope-steps {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  gap: 40px;
  margin-top: 44px;
}

.scope-section .scope-steps>article {
  min-width: 0;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.scope-section .scope-steps>article>span {
  display: block;
  color: var(--accent);
  font-size: 10px;
  line-height: 1.7;
  letter-spacing: 1px;
  font-variant-numeric: tabular-nums;
}

.scope-section .scope-steps h3 {
  margin-top: 17px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -.45px;
}

.scope-section .scope-steps p {
  max-width: 42ch;
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.scope-section .proof-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px 40px;
  margin-top: 36px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.scope-section .proof-footer p { max-width: 65ch; color: var(--muted); font-size: 12px; line-height: 1.8; }
.scope-section .proof-footer a { min-height: 44px; display: inline-flex; align-items: center; gap: 22px; }
.platform-evidence>summary { gap: 24px; }
.platform-evidence>summary .eyebrow { display: block; margin-bottom: 10px; }
.platform-evidence>div { padding-block: 22px; }
.platform.section-spacing:has(.platform-evidence) { padding-block: 38px; }

@media(max-width:1100px) {
  .proof-section .proof-layout { grid-template-columns: minmax(0,1fr); gap: 32px; }
  .proof-section .proof-reading { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); column-gap: 40px; align-content: start; }
  .proof-section .proof-reading>small { grid-column: 1/-1; }
  .proof-section .proof-reading>h3 { grid-column: 1; }
  .proof-section .proof-reading>p { grid-column: 1; }
  .proof-section .proof-findings { grid-column: 2; grid-row: 2/4; align-self: start; margin-top: 18px; }
  .proof-section .proof-verdict { grid-column: 1/-1; max-width: 86ch; margin-top: 24px; }
}

@media(max-width:900px) {
  .proof-section .proof-heading,
  .scope-section .scope-heading { grid-template-columns: minmax(0,1fr); gap: 20px; }
  .proof-section .proof-heading>p:not(.eyebrow),
  .scope-section .scope-heading>p:not(.eyebrow) { max-width: 65ch; }
  .proof-section .proof-output { gap: 24px; }
  .scope-section .scope-steps { gap: 26px; }
}

@media(max-width:760px) {
  .proof-section.section-spacing,
  .scope-section.section-spacing { padding-block: 60px; }
  .proof-section .proof-heading h2,
  .scope-section .scope-heading h2 { max-width: 22ch; font-size: clamp(30px,7.4vw,40px); letter-spacing: -1.05px; }
  .proof-section .proof-heading>p:not(.eyebrow),
  .scope-section .scope-heading>p:not(.eyebrow) { font-size: 14px; }
  .proof-section .proof-layout { margin-top: 28px; gap: 29px; }
  .proof-section .proof-toolbar { min-height: 56px; gap: 3px 15px; padding: 10px 12px; }
  .proof-section .proof-toolbar>span:last-child { font-size: 10px; }
  .proof-section .proof-media figcaption { padding-top: 9px; gap: 0 14px; }
  .proof-section .proof-controls { margin-top: 0; }
  .proof-section .proof-controls button { flex-direction: column; gap: 6px; min-height: 84px; padding: 12px 10px; }
  .proof-section .proof-controls button>strong { font-size: 11px; line-height: 1.6; }
  .proof-section .proof-reading { display: block; padding-top: 22px; }
  .proof-section .proof-reading>h3 { max-width: 27ch; font-size: 28px; margin-top: 16px; }
  .proof-section .proof-reading>p { max-width: 60ch; margin-top: 16px; }
  .proof-section .proof-findings { margin-top: 22px; }
  .proof-section .proof-verdict { margin-top: 21px; }
  .proof-section .proof-footer { gap: 12px; margin-top: 26px; padding-top: 20px; }
  .proof-section .proof-output { grid-template-columns: minmax(0,1fr); gap: 20px; margin-top: 26px; }
  .proof-section .proof-output p { max-width: 58ch; }
  .scope-section .scope-steps { grid-template-columns: minmax(0,1fr); gap: 27px; margin-top: 32px; }
  .scope-section .scope-steps h3 { font-size: 19px; margin-top: 12px; }
  .scope-section .scope-steps p { max-width: 60ch; margin-top: 12px; }
}

@media(max-width:390px) {
  .proof-section .proof-heading h2,
  .scope-section .scope-heading h2 { font-size: 30px; }
  .proof-section .proof-controls button { padding-inline: 8px; }
  .proof-section .proof-controls button>strong { font-size: 10px; }
  .proof-section .proof-reading>h3 { font-size: 26px; }
}