@import url('../design-system/base.css');

:root {
  --cs-canvas: #f2efe7;
  --cs-canvas-alt: #e6e0d4;
  --cs-structure: #11100d;
  --cs-structure-soft: #2a2822;
  --cs-ink-muted: #4e4a41;
  --cs-trace: #625d52;
  --cs-rule: #b8b0a2;
  --cs-field: #0a66c2;
  --cs-bound: #ffb000;
  --cs-signal: #973714;
  --cs-signal-field: #ff8b3d;
  --cs-white: #ffffff;
  --cs-max: 1440px;
  --cs-pad: clamp(20px, 4vw, 64px);
  --cs-display: clamp(4rem, 10vw, 9.5rem);
  --cs-ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

body.cs-body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--cs-canvas);
  color: var(--cs-structure);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

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

.cs-body :where(a) {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.cs-body a:hover {
  text-decoration-thickness: 2px;
}

.cs-body button,
.cs-body a {
  -webkit-tap-highlight-color: transparent;
}

.cs-body :focus-visible {
  outline: 3px solid var(--cs-bound);
  outline-offset: 3px;
}

.cs-skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 14px;
  transform: translateY(-180%);
  background: var(--cs-structure);
  color: var(--cs-white);
  font-weight: 700;
}

.cs-skip-link:focus {
  transform: none;
}

.cs-sticky-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 58px;
  border-bottom: 2px solid var(--cs-structure);
  background: color-mix(in srgb, var(--cs-canvas) 94%, transparent);
  backdrop-filter: blur(12px);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.cs-sticky-brand {
  align-self: stretch;
  display: flex;
  align-items: center;
  padding: 0 var(--cs-pad);
  border-right: 1px solid var(--cs-rule);
  text-decoration: none;
}

.cs-sticky-state {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 100%;
  padding: 0 24px;
  font-variant-numeric: tabular-nums;
}

.cs-sticky-state span:first-child {
  color: var(--cs-field);
}

.cs-sticky-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 100%;
  padding-right: var(--cs-pad);
}

.cs-sticky-actions a {
  text-decoration: none;
}

.cs-focus-toggle {
  min-height: 42px;
  padding: 9px 14px;
  border: 1px solid var(--cs-structure);
  border-radius: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.cs-focus-toggle:hover,
.cs-focus-toggle[aria-pressed="true"] {
  background: var(--cs-structure);
  color: var(--cs-white);
}

.cs-progress {
  position: absolute;
  right: 0;
  bottom: -2px;
  left: 0;
  height: 2px;
  overflow: hidden;
}

.cs-progress > span {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--cs-field);
}

.cs-hero {
  max-width: var(--cs-max);
  min-height: calc(100vh - 58px);
  margin: 0 auto;
  border-right: 2px solid var(--cs-structure);
  border-left: 2px solid var(--cs-structure);
}

.cs-hero-bar {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 24px;
  padding: 16px var(--cs-pad);
  border-bottom: 2px solid var(--cs-structure);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cs-hero-bar a {
  text-decoration: none;
}

.cs-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(420px, 0.88fr);
  min-height: 670px;
}

.cs-hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(56px, 8vw, 120px) var(--cs-pad);
  border-right: 2px solid var(--cs-structure);
}

.cs-kicker {
  margin: 0 0 20px;
  color: var(--cs-signal);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.cs-hero h1 {
  max-width: 870px;
  margin: 0;
  font-size: var(--cs-display);
  font-weight: 300;
  letter-spacing: -0.075em;
  line-height: 0.82;
}

.cs-deck {
  max-width: 720px;
  margin: clamp(32px, 5vw, 68px) 0 0;
  font-size: clamp(1.4rem, 2.2vw, 2.35rem);
  font-weight: 520;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.cs-status {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 32px;
}

.cs-status span {
  padding: 7px 9px;
  border: 1px solid var(--cs-structure);
  background: var(--cs-canvas-alt);
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.cs-hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 40px;
}

.cs-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 17px;
  border: 1px solid var(--cs-structure);
  background: var(--cs-canvas);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
}

.cs-button:hover {
  background: var(--cs-canvas-alt);
}

.cs-button-primary {
  border-color: var(--cs-field);
  background: var(--cs-field);
  color: var(--cs-white);
}

.cs-button-primary:hover {
  background: #004182;
}

.cs-text-link {
  font-size: 0.82rem;
  font-weight: 750;
}

.cs-hero-system {
  align-self: stretch;
  display: grid;
  grid-template-rows: auto auto 1fr auto auto;
  background: var(--cs-structure);
  color: var(--cs-white);
}

.cs-system-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 26px 28px;
  border-bottom: 1px solid #4e4a41;
  color: #d5d0c4;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.cs-system-head strong {
  color: var(--cs-bound);
  font-size: 1.45rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.cs-bound-rail {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  height: 56px;
  overflow: hidden;
  border-bottom: 1px solid #4e4a41;
}

.cs-bound-rail i {
  border-right: 1px solid #4e4a41;
}

.cs-bound-progress {
  position: absolute;
  inset: 0 auto 0 0;
  width: 58%;
  background: var(--cs-field);
  opacity: 0.8;
}

.cs-system-post {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(40px, 6vw, 86px) 28px;
  background: var(--cs-field);
}

.cs-system-label {
  margin-bottom: 18px;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.11em;
}

.cs-system-post strong {
  max-width: 390px;
  font-size: clamp(2.1rem, 4.2vw, 4.8rem);
  font-weight: 350;
  letter-spacing: -0.06em;
  line-height: 0.92;
}

.cs-system-post p {
  max-width: 420px;
  margin: 30px 0 0;
  font-weight: 600;
}

.cs-system-joint {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding: 22px 28px;
  border-top: 1px solid #4e4a41;
  border-bottom: 1px solid #4e4a41;
  background: var(--cs-structure-soft);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-align: center;
}

.cs-system-joint b {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--cs-signal-field);
  color: var(--cs-structure);
  font-size: 1.2rem;
}

.cs-trace {
  display: grid;
  grid-template-columns: auto 1fr auto 1fr auto 1fr auto;
  align-items: center;
  gap: 9px;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.cs-trace i {
  height: 1px;
  background: currentColor;
  opacity: 0.55;
}

.cs-hero-system > .cs-trace {
  padding: 24px 28px;
  color: #d5d0c4;
}

.cs-hero-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  border-top: 2px solid var(--cs-structure);
  border-bottom: 2px solid var(--cs-structure);
}

.cs-hero-meta div {
  padding: 22px var(--cs-pad);
  border-right: 1px solid var(--cs-rule);
}

.cs-hero-meta div:last-child {
  border-right: 0;
}

.cs-hero-meta dt {
  margin-bottom: 8px;
  color: var(--cs-ink-muted);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cs-hero-meta dd {
  margin: 0;
  font-size: 0.86rem;
  font-weight: 650;
  line-height: 1.35;
}

.cs-focus-entry {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 16px var(--cs-pad);
  background: var(--cs-bound);
  font-size: 0.78rem;
  font-weight: 650;
}

.cs-focus-entry .cs-focus-toggle {
  flex: 0 0 auto;
  background: var(--cs-structure);
  color: var(--cs-white);
}

.cs-main {
  max-width: var(--cs-max);
  margin: 0 auto;
  border-right: 2px solid var(--cs-structure);
  border-left: 2px solid var(--cs-structure);
}

.cs-section {
  display: grid;
  grid-template-columns: 146px minmax(0, 1fr);
  border-bottom: 2px solid var(--cs-structure);
  scroll-margin-top: 72px;
}

.cs-section-aside {
  padding: 58px 20px;
  border-right: 1px solid var(--cs-rule);
}

.cs-section-aside span {
  display: block;
  margin-bottom: 14px;
  color: var(--cs-field);
  font-size: clamp(2.2rem, 4vw, 4.5rem);
  font-weight: 280;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.07em;
  line-height: 0.85;
}

.cs-section-aside p {
  margin: 0;
  color: var(--cs-ink-muted);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
}

.cs-section-body {
  min-width: 0;
  padding: clamp(58px, 8vw, 120px) var(--cs-pad);
}

.cs-section-heading {
  max-width: 980px;
  margin-bottom: clamp(32px, 5vw, 64px);
}

.cs-section h2 {
  margin: 0;
  max-width: 970px;
  font-size: clamp(2.55rem, 6.6vw, 7.4rem);
  font-weight: 300;
  letter-spacing: -0.065em;
  line-height: 0.93;
}

.cs-tldr {
  display: none;
  max-width: 820px;
  margin: 0;
  padding: 24px;
  border-left: 8px solid var(--cs-bound);
  background: var(--cs-canvas-alt);
  font-size: clamp(1.1rem, 1.6vw, 1.4rem);
  font-weight: 650;
}

.cs-lede {
  max-width: 850px;
  margin: 0 0 48px;
  font-size: clamp(1.25rem, 2.15vw, 2rem);
  letter-spacing: -0.025em;
  line-height: 1.25;
}

.cs-detail > p:not([class]) {
  max-width: 780px;
}

.cs-brief-grid,
.cs-evidence-grid,
.cs-option-grid,
.cs-responsibility-grid,
.cs-build-grid,
.cs-measure-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--cs-structure);
  border-left: 1px solid var(--cs-structure);
}

.cs-brief-grid article,
.cs-evidence-grid article,
.cs-option-grid article,
.cs-responsibility-grid article,
.cs-measure-grid article {
  min-height: 220px;
  padding: 26px;
  border-right: 1px solid var(--cs-structure);
  border-bottom: 1px solid var(--cs-structure);
}

.cs-brief-grid span,
.cs-evidence-grid span,
.cs-option-grid span,
.cs-responsibility-grid span,
.cs-measure-grid span,
.cs-build-grid span {
  color: var(--cs-signal);
  font-size: 0.65rem;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.cs-brief-grid h3,
.cs-evidence-grid h3,
.cs-option-grid h3,
.cs-responsibility-grid h3,
.cs-measure-grid h3 {
  margin: 34px 0 0;
  font-size: clamp(1.25rem, 2vw, 2rem);
  font-weight: 530;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.cs-evidence-grid p,
.cs-option-grid p,
.cs-responsibility-grid p {
  margin: 18px 0 0;
  color: var(--cs-ink-muted);
}

.cs-principle,
.cs-ai-boundary {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 28px;
  margin-top: 40px;
  padding: 30px;
  background: var(--cs-structure);
  color: var(--cs-white);
}

.cs-principle p,
.cs-ai-boundary p {
  margin: 0;
  color: var(--cs-bound);
  font-size: 0.66rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.cs-principle strong,
.cs-ai-boundary strong {
  font-size: clamp(1.25rem, 2vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.25;
}

.cs-section-demo {
  background: var(--cs-canvas-alt);
}

.cs-demo-notice {
  margin-bottom: 20px;
  padding: 16px 18px;
  border: 1px solid var(--cs-structure);
  background: var(--cs-bound);
  font-size: 0.86rem;
}

.cs-demo-layout {
  display: grid;
  grid-template-columns: minmax(360px, 680px) minmax(250px, 1fr);
  border: 2px solid var(--cs-structure);
  background: var(--cs-canvas);
}

.cs-demo-frame {
  min-height: 780px;
  border-right: 2px solid var(--cs-structure);
  background: #dde4eb;
}

.cs-demo-frame iframe {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 780px;
  border: 0;
}

.cs-demo-proof {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 30px;
}

.cs-demo-proof h3 {
  margin: 20px 0 8px;
  font-size: 1.5rem;
}

.cs-demo-proof ul {
  margin: 8px 0 28px;
  padding-left: 20px;
}

.cs-demo-proof li {
  margin-bottom: 8px;
}

.cs-demo-proof .cs-button {
  width: 100%;
  margin-top: auto;
}

.cs-demo-proof .cs-text-link {
  margin-top: 18px;
}

.cs-proof-tag {
  display: inline-block;
  padding: 6px 8px;
  background: var(--cs-field);
  color: var(--cs-white);
  font-size: 0.64rem;
  font-weight: 850;
  letter-spacing: 0.1em;
}

.cs-proof-tag-open {
  margin-top: 10px;
  background: var(--cs-signal);
}

.cs-system-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--cs-structure);
  border-left: 1px solid var(--cs-structure);
  list-style: none;
}

.cs-system-steps li {
  min-height: 330px;
  padding: 24px;
  border-right: 1px solid var(--cs-structure);
  border-bottom: 1px solid var(--cs-structure);
}

.cs-system-steps li:nth-child(2) {
  background: var(--cs-field);
  color: var(--cs-white);
}

.cs-system-steps li:nth-child(3) {
  background: var(--cs-bound);
}

.cs-system-steps span {
  font-size: 0.65rem;
  font-weight: 850;
  letter-spacing: 0.09em;
}

.cs-system-steps h3 {
  margin: 72px 0 18px;
  font-size: 1.55rem;
  font-weight: 550;
  letter-spacing: -0.035em;
  line-height: 1.1;
}

.cs-system-steps p {
  margin: 0;
  font-size: 0.9rem;
}

.cs-trace-card {
  margin-top: 36px;
  padding: 28px;
  border: 1px solid var(--cs-structure);
}

.cs-trace-card > div:first-child {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 32px;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.cs-trace-card > div:first-child span {
  color: var(--cs-signal);
  font-weight: 850;
}

.cs-trace-card p {
  max-width: 780px;
  margin: 28px 0 0;
  color: var(--cs-ink-muted);
}

.cs-decision-list {
  border-top: 2px solid var(--cs-structure);
}

.cs-decision {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 32px;
  padding: 44px 0;
  border-bottom: 1px solid var(--cs-rule);
}

.cs-decision-num {
  color: var(--cs-field);
  font-size: 3.4rem;
  font-weight: 300;
  letter-spacing: -0.06em;
}

.cs-decision h3 {
  margin: 0 0 24px;
  font-size: clamp(1.8rem, 3vw, 3.4rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1;
}

.cs-decision p {
  max-width: 790px;
  margin: 10px 0;
}

.cs-evidence-grid article {
  min-height: 250px;
}

.cs-evidence-grid .is-built,
.cs-evidence-grid .is-tested {
  background: var(--cs-field);
  color: var(--cs-white);
}

.cs-evidence-grid .is-built span,
.cs-evidence-grid .is-tested span,
.cs-evidence-grid .is-built p,
.cs-evidence-grid .is-tested p {
  color: var(--cs-white);
}

.cs-evidence-grid .is-synthetic {
  background: var(--cs-bound);
}

.cs-evidence-grid .is-synthetic span,
.cs-measure-grid article:nth-child(3) span {
  color: var(--cs-structure);
}

.cs-evidence-grid .is-open {
  background: var(--cs-canvas-alt);
}

.cs-evidence-note {
  margin: 30px 0 0;
  padding-left: 18px;
  border-left: 8px solid var(--cs-signal-field);
  font-weight: 700;
}

.cs-option-grid article {
  min-height: 270px;
}

.cs-option-grid .is-selected {
  background: var(--cs-structure);
  color: var(--cs-white);
}

.cs-option-grid .is-selected span,
.cs-option-grid .is-selected p {
  color: var(--cs-white);
}

.cs-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--cs-structure);
}

.cs-research-table {
  width: 100%;
  min-width: 820px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.cs-research-table th,
.cs-research-table td {
  padding: 18px;
  border-right: 1px solid var(--cs-rule);
  border-bottom: 1px solid var(--cs-rule);
  text-align: left;
  vertical-align: top;
}

.cs-research-table th {
  background: var(--cs-structure);
  color: var(--cs-white);
  font-size: 0.67rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cs-research-table tr:last-child td {
  border-bottom: 0;
}

.cs-references {
  margin-top: 28px;
  border: 1px solid var(--cs-structure);
}

.cs-references summary {
  padding: 18px;
  cursor: pointer;
  font-weight: 800;
}

.cs-references ol {
  margin: 0;
  padding: 0 42px 28px 58px;
}

.cs-references li {
  margin: 12px 0;
}

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

.cs-measure-grid article {
  min-height: 300px;
}

.cs-measure-grid article:nth-child(1) {
  background: var(--cs-field);
  color: var(--cs-white);
}

.cs-measure-grid article:nth-child(2) {
  background: var(--cs-canvas-alt);
}

.cs-measure-grid article:nth-child(3) {
  background: var(--cs-bound);
}

.cs-measure-grid article:nth-child(1) span {
  color: var(--cs-white);
}

.cs-measure-grid ul {
  margin: 24px 0 0;
  padding-left: 20px;
}

.cs-measure-grid li {
  margin-bottom: 8px;
}

.cs-study-plan {
  display: grid;
  grid-template-columns: minmax(180px, 0.35fr) minmax(0, 1fr);
  gap: 30px;
  margin-top: 28px;
  padding: 28px;
  border: 1px solid var(--cs-structure);
}

.cs-study-plan h3,
.cs-study-plan p {
  margin: 0;
}

.cs-study-plan h3 {
  font-size: 1.5rem;
}

.cs-analytics-figure {
  margin: 28px 0 0;
  border: 1px solid var(--cs-structure);
  background: var(--cs-canvas);
}

.cs-analytics-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.cs-analytics-figure figcaption {
  padding: 16px 18px;
  border-top: 1px solid var(--cs-structure);
  font-size: 0.82rem;
}

.cs-responsibility-grid article {
  min-height: 260px;
}

.cs-ai-boundary {
  border-left: 10px solid var(--cs-signal-field);
}

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

.cs-build-grid a {
  display: flex;
  flex-direction: column;
  min-height: 210px;
  padding: 24px;
  border-right: 1px solid var(--cs-structure);
  border-bottom: 1px solid var(--cs-structure);
  color: inherit;
  text-decoration: none;
}

.cs-build-grid a:hover {
  background: var(--cs-bound);
}

.cs-build-grid strong {
  margin-top: 38px;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.cs-build-grid small {
  margin-top: 14px;
  color: var(--cs-ink-muted);
  font-size: 0.8rem;
}

.cs-next {
  margin-top: 36px;
  padding: 32px;
  background: var(--cs-structure);
  color: var(--cs-white);
}

.cs-next .cs-kicker {
  color: var(--cs-bound);
}

.cs-next ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 40px;
  margin: 0;
  padding-left: 22px;
}

.cs-footer {
  max-width: var(--cs-max);
  margin: 0 auto;
  padding: clamp(44px, 7vw, 90px) var(--cs-pad);
  border-right: 2px solid var(--cs-structure);
  border-bottom: 2px solid var(--cs-structure);
  border-left: 2px solid var(--cs-structure);
  background: var(--cs-structure);
  color: var(--cs-white);
}

.cs-footer > div:first-child {
  display: flex;
  flex-direction: column;
}

.cs-footer > div:first-child span {
  color: var(--cs-bound);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.1em;
}

.cs-footer > div:first-child strong {
  margin-top: 18px;
  font-size: clamp(2.6rem, 7vw, 7.5rem);
  font-weight: 300;
  letter-spacing: -0.065em;
  line-height: 0.9;
}

.cs-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 48px;
}

.cs-footer p {
  max-width: 720px;
  margin: 40px 0 0;
  color: #cfc9bd;
  font-size: 0.78rem;
}

body.cs-focus .cs-collapsible:not(.cs-expanded) .cs-detail {
  display: none;
}

body.cs-focus .cs-collapsible:not(.cs-expanded) .cs-tldr {
  display: block;
}

body.cs-focus .cs-section-body {
  padding-top: 52px;
  padding-bottom: 52px;
}

body.cs-focus .cs-section-heading {
  margin-bottom: 26px;
}

body.cs-focus .cs-section h2 {
  font-size: clamp(2.25rem, 4.8vw, 5rem);
}

body.cs-focus .cs-section[data-keep="true"] .cs-demo-notice,
body.cs-focus .cs-section[data-keep="true"] .cs-demo-layout {
  display: grid;
}

.cs-expand-toggle {
  display: none;
  min-height: 44px;
  margin-top: 20px;
  padding: 10px 14px;
  border: 1px solid var(--cs-structure);
  border-radius: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
}

body.cs-focus .cs-collapsible .cs-expand-toggle {
  display: inline-flex;
  align-items: center;
}

body.cs-focus .cs-expanded .cs-tldr {
  display: none;
}

@media (max-width: 1100px) {
  .cs-sticky-nav {
    grid-template-columns: 1fr auto;
  }

  .cs-sticky-state {
    display: none;
  }

  .cs-hero-grid {
    grid-template-columns: 1fr;
  }

  .cs-hero-copy {
    border-right: 0;
    border-bottom: 2px solid var(--cs-structure);
  }

  .cs-hero-system {
    min-height: 640px;
  }

  .cs-hero-meta {
    grid-template-columns: repeat(2, 1fr);
  }

  .cs-hero-meta div:nth-child(2) {
    border-right: 0;
  }

  .cs-hero-meta div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--cs-rule);
  }

  .cs-system-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cs-demo-layout {
    grid-template-columns: minmax(380px, 1fr) 300px;
  }

  .cs-build-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  :root {
    --cs-pad: 20px;
  }

  html {
    scroll-behavior: auto;
  }

  .cs-sticky-nav {
    min-height: 54px;
  }

  .cs-sticky-brand {
    border-right: 0;
  }

  .cs-sticky-actions a {
    display: none;
  }

  .cs-sticky-actions {
    gap: 0;
    padding-right: 10px;
  }

  .cs-sticky-actions .cs-focus-toggle {
    min-height: 38px;
    padding: 7px 9px;
    font-size: 0.66rem;
  }

  .cs-hero,
  .cs-main,
  .cs-footer {
    border-right: 0;
    border-left: 0;
  }

  .cs-hero-bar {
    grid-template-columns: 1fr auto;
  }

  .cs-hero-bar span:nth-child(2) {
    display: none;
  }

  .cs-hero h1 {
    font-size: clamp(3.8rem, 20vw, 7rem);
  }

  .cs-deck {
    font-size: 1.45rem;
  }

  .cs-hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .cs-hero-actions .cs-text-link {
    text-align: center;
  }

  .cs-hero-system {
    min-height: 560px;
  }

  .cs-system-post strong {
    font-size: 3.2rem;
  }

  .cs-hero-meta {
    grid-template-columns: 1fr;
  }

  .cs-hero-meta div,
  .cs-hero-meta div:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid var(--cs-rule);
  }

  .cs-focus-entry {
    align-items: stretch;
    flex-direction: column;
  }

  .cs-section {
    grid-template-columns: 1fr;
  }

  .cs-section-aside {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding: 20px;
    border-right: 0;
    border-bottom: 1px solid var(--cs-rule);
  }

  .cs-section-aside span {
    margin: 0;
    font-size: 2.4rem;
  }

  .cs-section-aside p {
    writing-mode: initial;
  }

  .cs-section-body {
    padding-top: 56px;
    padding-bottom: 56px;
  }

  .cs-section h2 {
    font-size: clamp(2.6rem, 12vw, 4.8rem);
  }

  .cs-brief-grid,
  .cs-evidence-grid,
  .cs-option-grid,
  .cs-responsibility-grid,
  .cs-build-grid,
  .cs-measure-grid,
  .cs-system-steps {
    grid-template-columns: 1fr;
  }

  .cs-brief-grid article,
  .cs-evidence-grid article,
  .cs-option-grid article,
  .cs-responsibility-grid article,
  .cs-measure-grid article,
  .cs-system-steps li,
  .cs-build-grid a {
    min-height: auto;
  }

  .cs-principle,
  .cs-ai-boundary,
  .cs-study-plan {
    grid-template-columns: 1fr;
  }

  .cs-demo-layout {
    grid-template-columns: 1fr;
  }

  .cs-demo-frame {
    display: none;
  }

  .cs-demo-proof {
    min-height: 560px;
  }

  .cs-demo-proof .cs-button {
    margin-top: 24px;
  }

  .cs-decision {
    grid-template-columns: 1fr;
  }

  .cs-next ol {
    grid-template-columns: 1fr;
  }

  .cs-footer > div:first-child strong {
    font-size: 3.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .cs-body *,
  .cs-body *::before,
  .cs-body *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .cs-sticky-nav,
  .cs-focus-entry,
  .cs-demo-frame {
    display: none !important;
  }

  .cs-hero,
  .cs-main,
  .cs-footer {
    max-width: none;
    border-right: 0;
    border-left: 0;
  }

  .cs-section {
    break-inside: avoid;
  }
}