:root {
  color-scheme: dark;
  --ink: #f7f1df;
  --muted: #b9af99;
  --quiet: #837967;
  --void: #080907;
  --charcoal: #11110d;
  --panel: rgba(247, 241, 223, 0.065);
  --panel-strong: rgba(247, 241, 223, 0.11);
  --line: rgba(247, 241, 223, 0.18);
  --line-strong: rgba(247, 241, 223, 0.34);
  --signal: #a7ff4f;
  --copper: #ff9f5f;
  --cyan: #83dbc8;
  --red: #ff6b5f;
  --max: 1180px;
  --pad: clamp(18px, 4vw, 56px);
  --display: Georgia, "Times New Roman", serif;
  --body: "Aptos", "Segoe UI", "Helvetica Neue", sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--void);
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(247, 241, 223, 0.055), transparent 1px),
    linear-gradient(180deg, rgba(247, 241, 223, 0.035), transparent 1px),
    linear-gradient(135deg, rgba(167, 255, 79, 0.08), transparent 34%),
    linear-gradient(225deg, rgba(255, 159, 95, 0.075), transparent 38%),
    linear-gradient(180deg, #080907 0%, #11110d 54%, #070806 100%);
  background-size: 84px 84px, 84px 84px, auto, auto, auto;
  font-family: var(--body);
  line-height: 1.5;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(247, 241, 223, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(247, 241, 223, 0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, black, transparent 74%);
}

a {
  color: inherit;
  text-decoration: none;
}

p,
h1,
h2,
h3 {
  margin: 0;
}

ul {
  margin: 0;
  padding-left: 18px;
}

li + li {
  margin-top: 7px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  justify-content: center;
  padding: 14px var(--pad) 0;
  pointer-events: none;
}

.topbar-inner {
  width: min(var(--max), 100%);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 12px 14px;
  border: 1px solid rgba(247, 241, 223, 0.13);
  background: rgba(8, 9, 7, 0.78);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 70px rgba(0, 0, 0, 0.28);
  pointer-events: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 10px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-mark {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  color: var(--signal);
  flex: 0 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(10px, 2vw, 22px);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex-wrap: wrap;
}

.nav a {
  opacity: 0.82;
  border-bottom: 1px solid transparent;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--ink);
  opacity: 1;
  border-color: var(--signal);
  outline: none;
}

.shell {
  width: min(var(--max), calc(100vw - 2 * var(--pad)));
  margin: 0 auto;
}

.intro-board {
  min-height: 58svh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.36fr);
  align-items: end;
  gap: clamp(28px, 6vw, 78px);
  padding: clamp(78px, 12vw, 132px) 0 52px;
}

.intro-copy {
  max-width: 850px;
}

.eyebrow,
.label,
.kicker {
  color: var(--copper);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 18px;
}

.eyebrow::before {
  content: "";
  width: 42px;
  height: 1px;
  background: var(--copper);
}

h1 {
  max-width: 920px;
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(3rem, 7.2vw, 7rem);
  line-height: 0.94;
  letter-spacing: 0;
  text-wrap: balance;
}

.lead {
  max-width: 760px;
  margin-top: 24px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.45;
}

.current-state,
.hero-card,
.panel,
.mini-card,
.metric-card {
  min-width: 0;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel-strong), rgba(247, 241, 223, 0.042));
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.24);
}

.current-state {
  padding: 20px;
}

.status {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 5px 9px;
  border: 1px solid rgba(167, 255, 79, 0.34);
  color: var(--signal);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.current-state p,
.hero-card p,
.panel p,
.mini-card p,
.metric-card p,
.patch-cell p,
.dossier-note {
  color: var(--muted);
  overflow-wrap: anywhere;
}

.current-state p {
  margin-top: 16px;
}

.section {
  padding: 44px 0;
  border-top: 1px solid var(--line);
}

.version-site {
  padding-bottom: clamp(48px, 8vw, 110px);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.62fr) minmax(260px, 0.38fr);
  gap: 28px;
  align-items: end;
  margin-bottom: 24px;
}

.section h2 {
  margin-top: 10px;
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1;
  text-wrap: balance;
}

.section-note {
  color: var(--muted);
}

.process-line {
  position: relative;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 10px;
}

.process-line::before {
  content: "";
  position: absolute;
  left: 4%;
  right: 4%;
  top: 25px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(167, 255, 79, 0.58), transparent);
}

.process-node {
  position: relative;
  min-height: 245px;
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  background: rgba(8, 9, 7, 0.56);
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.process-node:hover,
.process-node:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(167, 255, 79, 0.5);
  background: rgba(247, 241, 223, 0.075);
  outline: none;
}

.node-dot {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(167, 255, 79, 0.5);
  background: #0b0d08;
  color: var(--signal);
  font-family: var(--mono);
  font-size: 10px;
}

.node-number {
  color: var(--signal);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.process-node h3 {
  font-family: var(--display);
  font-size: 1.38rem;
  font-weight: 500;
  line-height: 1.06;
}

.process-node p {
  color: var(--muted);
  font-size: 0.92rem;
}

.node-status {
  margin-top: auto;
  color: var(--copper);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.matrix-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: rgba(8, 9, 7, 0.52);
}

.comparison-matrix {
  width: 100%;
  min-width: 830px;
  border-collapse: collapse;
}

.comparison-matrix caption {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.comparison-matrix th,
.comparison-matrix td {
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  padding: 12px;
  text-align: left;
  vertical-align: top;
}

.comparison-matrix tr:last-child th,
.comparison-matrix tr:last-child td {
  border-bottom: 0;
}

.comparison-matrix th {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(247, 241, 223, 0.06);
}

.comparison-matrix td {
  color: var(--muted);
  font-size: 0.92rem;
}

.comparison-matrix td strong {
  color: var(--signal);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
}

.version-hero {
  min-height: 48svh;
  display: grid;
  align-items: end;
  padding: clamp(70px, 10vw, 120px) 0 38px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.36fr);
  gap: clamp(24px, 5vw, 70px);
  align-items: end;
}

.hero-card {
  padding: 20px;
}

.ascii-section {
  margin-top: clamp(22px, 4vw, 44px);
}

.ascii-panel {
  position: relative;
  overflow: hidden;
  border-color: rgba(167, 255, 79, 0.28);
  background:
    linear-gradient(135deg, rgba(167, 255, 79, 0.08), transparent 34%),
    linear-gradient(225deg, rgba(131, 219, 200, 0.08), transparent 42%),
    var(--panel);
}

.ascii-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.ascii-head h2,
.story-panel h2 {
  font-family: var(--display);
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 500;
}



.ascii-visual-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.92fr);
  gap: 16px;
  align-items: stretch;
}

.adapted-key-visual {
  margin: 0;
  min-width: 0;
}

.adapted-visual {
  height: 100%;
  min-height: 430px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(16px, 2.6vw, 22px);
  border: 1px solid rgba(131, 219, 200, 0.26);
  background:
    linear-gradient(180deg, rgba(247, 241, 223, 0.055), transparent 42%),
    radial-gradient(circle at 16% 0%, rgba(68, 158, 255, 0.14), transparent 31%),
    radial-gradient(circle at 86% 8%, rgba(167, 255, 79, 0.11), transparent 28%),
    rgba(8, 9, 7, 0.72);
  box-shadow: inset 0 0 36px rgba(0, 0, 0, 0.32), 0 24px 80px rgba(0, 0, 0, 0.18);
}

.adapted-toolbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.adapted-toolbar span {
  color: var(--quiet);
  font-size: 11px;
}

.adapted-toolbar strong {
  color: var(--signal);
  font-size: 13px;
}

.adapted-title {
  max-width: 720px;
}

.adapted-title h3 {
  margin: 0 0 8px;
  color: var(--ink);
  font-family: var(--display);
  font-size: clamp(25px, 3.2vw, 38px);
  font-weight: 500;
  line-height: 1.02;
}

.adapted-title p {
  color: var(--ink);
  font-size: clamp(15px, 1.8vw, 18px);
  line-height: 1.38;
}

.adapted-board {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  align-items: stretch;
  margin-top: 4px;
}

.adapted-lane {
  min-width: 0;
  padding: 12px;
  border: 1px solid color-mix(in srgb, var(--lane-color, var(--cyan)) 42%, transparent);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--lane-color, var(--cyan)) 13%, transparent), transparent 50%),
    rgba(247, 241, 223, 0.045);
}

.adapted-lane:nth-child(1) {
  --lane-color: #449eff;
}

.adapted-lane:nth-child(2) {
  --lane-color: #ffd52e;
}

.adapted-lane:nth-child(3) {
  --lane-color: #59d985;
}

.owner-lane {
  --lane-color: #b870ff;
}

.lane-head {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 32px;
  margin-bottom: 10px;
}

.lane-head span {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  color: var(--lane-color);
  border: 1px solid color-mix(in srgb, var(--lane-color) 55%, transparent);
  background: color-mix(in srgb, var(--lane-color) 13%, transparent);
  font-family: var(--mono);
  font-size: 11px;
}

.lane-head h4 {
  margin: 0;
  color: var(--lane-color);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.adapted-card-stack {
  display: grid;
  gap: 8px;
}

.adapted-card {
  min-width: 0;
  padding: 10px;
  border: 1px solid rgba(247, 241, 223, 0.12);
  background: rgba(8, 9, 7, 0.38);
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.14);
}

.adapted-card p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.adapted-card-lock {
  border-color: color-mix(in srgb, var(--lane-color) 38%, transparent);
}

.adapted-deltas {
  margin-top: auto;
  padding-top: 2px;
}

.kv-frame {
  height: 100%;
  min-height: 330px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(16px, 3vw, 24px);
  border: 1px solid rgba(131, 219, 200, 0.22);
  background:
    radial-gradient(circle at 22% 18%, rgba(131, 219, 200, 0.16), transparent 32%),
    radial-gradient(circle at 82% 70%, rgba(255, 159, 95, 0.14), transparent 34%),
    rgba(8, 9, 7, 0.62);
  box-shadow: inset 0 0 34px rgba(0, 0, 0, 0.24);
}

.kv-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.kv-meta span {
  color: var(--quiet);
  font-size: 11px;
}

.kv-meta strong {
  color: var(--cyan);
  font-size: 13px;
}

.kv-svg {
  width: 100%;
  height: auto;
  margin: 18px 0;
  overflow: visible;
}

.kv-svg rect {
  fill: rgba(247, 241, 223, 0.025);
  stroke: rgba(247, 241, 223, 0.14);
}

.kv-path {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 8 7;
  opacity: 0.78;
}

.kv-node circle {
  fill: rgba(8, 9, 7, 0.9);
  stroke: var(--cyan);
  stroke-width: 2;
}

.kv-node text {
  fill: var(--ink);
  font-family: var(--mono);
  font-size: 12px;
}

.kv-node .kv-label {
  fill: var(--muted);
  font-size: 10px;
}

.kv-frame figcaption {
  color: var(--muted);
  font-size: 14px;
}

.ascii-art {
  max-width: 100%;
  margin: 0;
  padding: clamp(16px, 3vw, 28px);
  overflow-x: auto;
  white-space: pre;
  color: var(--ink);
  border: 1px solid rgba(247, 241, 223, 0.16);
  background: rgba(8, 9, 7, 0.62);
  box-shadow: inset 0 0 34px rgba(0, 0, 0, 0.26);
  font-family: var(--mono);
  font-size: clamp(10px, 1.35vw, 13px);
  line-height: 1.35;
  letter-spacing: 0;
}

.ascii-art::selection {
  color: #080907;
  background: var(--signal);
}



.product-profile {
  margin-top: clamp(26px, 5vw, 58px);
}

.profile-panel {
  border-color: rgba(131, 219, 200, 0.26);
  background:
    linear-gradient(135deg, rgba(131, 219, 200, 0.08), transparent 36%),
    linear-gradient(225deg, rgba(255, 159, 95, 0.06), transparent 42%),
    var(--panel);
}

.profile-kicker {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.profile-badge {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 6px 10px;
  border: 1px solid rgba(131, 219, 200, 0.34);
  color: var(--cyan);
  background: rgba(131, 219, 200, 0.08);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.profile-lead {
  max-width: 860px;
  margin-top: 10px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 22px);
}

.profile-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.profile-card {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  background: rgba(8, 9, 7, 0.38);
}

.profile-card-wide {
  grid-column: 1 / -1;
}

.profile-card h3,
.profile-card h4 {
  font-family: var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.profile-card h3 {
  margin-bottom: 10px;
  color: var(--signal);
  font-size: 12px;
}

.profile-card h4 {
  margin-bottom: 7px;
  color: var(--cyan);
  font-size: 11px;
}

.system-stack {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.system-stack > div,
.profile-card ul,
.profile-card div {
  min-width: 0;
}

.profile-card p,
.profile-card li {
  color: var(--muted);
  overflow-wrap: anywhere;
}

.version-story {
  margin-top: clamp(26px, 5vw, 58px);
}

.story-panel {
  border-color: rgba(255, 159, 95, 0.24);
  background:
    linear-gradient(135deg, rgba(255, 159, 95, 0.08), transparent 34%),
    var(--panel);
}

.story-lead {
  max-width: 760px;
  margin-top: 10px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 22px);
}

.story-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.story-grid > div {
  padding: 16px;
  border: 1px solid var(--line);
  background: rgba(8, 9, 7, 0.36);
}

.story-grid h3 {
  margin-bottom: 8px;
  color: var(--signal);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.dossier-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.58fr) minmax(300px, 0.42fr);
  gap: 16px;
}

.panel,
.mini-card,
.metric-card {
  padding: 18px;
}

.panel h3,
.mini-card h3,
.metric-card h3,
.patch-cell h3 {
  color: var(--copper);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 12px;
}

.pipeline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.skill-chip,
.proof-chip {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  min-height: 30px;
  border: 1px solid var(--line);
  background: rgba(8, 9, 7, 0.32);
  color: var(--ink);
  padding: 5px 9px;
  font-family: var(--mono);
  font-size: 11px;
  overflow-wrap: anywhere;
}

.skill-chip::after {
  content: ">";
  margin-left: 8px;
  color: var(--quiet);
}

.skill-chip:last-child::after {
  content: "";
  margin: 0;
}

.patch-diagram,
.evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.patch-cell {
  min-height: 180px;
  padding: 18px;
  border: 1px solid var(--line);
  background: rgba(247, 241, 223, 0.052);
  overflow-wrap: anywhere;
}

.patch-cell.problem {
  border-color: rgba(255, 107, 95, 0.35);
}

.patch-cell.change {
  border-color: rgba(131, 219, 200, 0.36);
}

.patch-cell.validation {
  border-color: rgba(167, 255, 79, 0.34);
}

.patch-cell.stand {
  border-color: rgba(247, 241, 223, 0.28);
}

.patch-cell.proposal,
.patch-cell.implementation {
  border-color: rgba(131, 219, 200, 0.34);
}

.patch-cell.test {
  border-color: rgba(255, 159, 95, 0.36);
}

.patch-cell.method {
  grid-column: 1 / -1;
  min-height: 120px;
  border-color: rgba(167, 255, 79, 0.34);
  background: linear-gradient(90deg, rgba(167, 255, 79, 0.06), rgba(247, 241, 223, 0.045));
}

.patch-arrow {
  color: var(--signal);
  font-family: var(--mono);
  font-size: 11px;
}

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.mini-card.good {
  border-color: rgba(167, 255, 79, 0.35);
}

.mini-card.bad {
  border-color: rgba(255, 107, 95, 0.34);
}

.proof-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.proof-chip {
  color: var(--signal);
  border-color: rgba(167, 255, 79, 0.32);
}

.source-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.source-link {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  min-height: 28px;
  padding: 4px 8px;
  border: 1px solid rgba(131, 219, 200, 0.28);
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

.source-link:hover,
.source-link:focus-visible {
  border-color: rgba(167, 255, 79, 0.48);
  color: var(--signal);
  outline: none;
}

.next-jump {
  border-left: 2px solid var(--cyan);
}

.footer {
  border-top: 1px solid var(--line);
  padding: 36px var(--pad);
  color: var(--quiet);
  font-family: var(--mono);
  font-size: 11px;
  text-align: center;
}

@media (max-width: 1080px) {
  .intro-board,
  .hero-grid,
  .section-head,
  .dossier-grid {
    grid-template-columns: 1fr;
  }

  .process-line {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 780px) {
  .process-line,
  .patch-diagram,
  .evidence-grid,
  .two-column,
  .story-grid,
  .profile-grid,
  .system-stack,
  .ascii-visual-grid,
  .explain-flow,
  .adapted-board {
    grid-template-columns: 1fr;
  }

  .flow-arrow {
    transform: rotate(90deg);
  }

  .process-line::before {
    display: none;
  }

  .matrix-wrap {
    overflow: visible;
  }

  .comparison-matrix {
    display: block;
    min-width: 0;
  }

  .comparison-matrix tbody,
  .comparison-matrix tr,
  .comparison-matrix th,
  .comparison-matrix td {
    display: block;
  }

  .comparison-matrix tr:first-child {
    display: none;
  }

  .comparison-matrix tr {
    border-bottom: 1px solid var(--line);
  }

  .comparison-matrix tr:last-child {
    border-bottom: 0;
  }

  .comparison-matrix th,
  .comparison-matrix td {
    border-right: 0;
  }

  .comparison-matrix td::before {
    content: attr(data-version);
    display: block;
    margin-bottom: 4px;
    color: var(--quiet);
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
  }

  .topbar {
    position: relative;
  }

  .topbar-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .shell {
    width: min(var(--max), calc(100vw - 36px));
  }

  .intro-board,
  .version-hero {
    min-height: auto;
    padding-top: 42px;
  }
}


.explain-visual {
  height: 100%;
  min-height: 430px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: clamp(16px, 3vw, 24px);
  border: 1px solid rgba(131, 219, 200, 0.24);
  background:
    linear-gradient(135deg, rgba(131, 219, 200, 0.12), transparent 36%),
    linear-gradient(225deg, rgba(255, 159, 95, 0.10), transparent 42%),
    rgba(8, 9, 7, 0.64);
  box-shadow: inset 0 0 34px rgba(0, 0, 0, 0.24);
}

.explain-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.explain-head span {
  color: var(--quiet);
  font-size: 11px;
}

.explain-head strong {
  color: var(--cyan);
  font-size: 13px;
}

.explain-thesis {
  color: var(--ink);
  font-family: var(--display);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.22;
}

.explain-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 10px;
  align-items: stretch;
}

.explain-layer {
  position: relative;
  min-width: 0;
  padding: 18px 14px 14px;
  border: 1px solid rgba(247, 241, 223, 0.16);
  background: rgba(247, 241, 223, 0.045);
}

.layer-num {
  position: absolute;
  top: -11px;
  left: 12px;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border: 1px solid rgba(131, 219, 200, 0.44);
  background: #080907;
  color: var(--signal);
  font-family: var(--mono);
  font-size: 11px;
}

.explain-layer h4 {
  margin: 0 0 10px;
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.explain-layer ul {
  padding-left: 15px;
}

.explain-layer li {
  color: var(--muted);
  font-size: 13px;
}

.flow-arrow {
  display: grid;
  place-items: center;
  color: var(--copper);
  font-family: var(--mono);
  font-size: 24px;
}

.delta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.delta-row span {
  padding: 6px 9px;
  border: 1px solid rgba(167, 255, 79, 0.24);
  color: var(--signal);
  background: rgba(167, 255, 79, 0.065);
  font-family: var(--mono);
  font-size: 11px;
}

.visual-warning {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}