:root {
  --cs-bg: #faf6f1;
  --cs-dot: radial-gradient(circle, rgba(90, 45, 20, 0.08) 1px, transparent 1px);
  --cs-dot-size: 18px 18px;
  --cs-surface: #fffbf8;
  --cs-mockup-bg: #ffffff;
  --cs-ink: #09090b;
  --cs-muted: #52525b;
  --cs-border: #eadfd6;
  --cs-accent: #ff5200;
  --cs-band: #18181b;
  --cs-max: min(1200px, 92%);
  --cs-gutter: 0;
  --cs-display: "Archivo", system-ui, sans-serif;
  --cs-body: "Space Grotesk", system-ui, sans-serif;
  --cs-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --cs-dur: 220ms;

  /* Monochromatic orange scale (Procore accent) */
  --cs-o-50: #fff7f3;
  --cs-o-100: #ffede4;
  --cs-o-200: #ffd4bc;
  --cs-o-300: #ffb280;
  --cs-o-400: #ff8540;
  --cs-o-500: #ff5200;
  --cs-o-600: #e04800;
  --cs-o-700: #b83800;
  --cs-o-800: #7a2500;
  --cs-o-900: #3d1200;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--cs-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--cs-ink);
  background-color: var(--cs-bg);
  background-image: var(--cs-dot);
  background-size: var(--cs-dot-size);
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

main a:hover,
.cs-footer a:hover {
  color: var(--cs-accent);
}

:focus-visible {
  outline: 2px solid var(--cs-accent);
  outline-offset: 3px;
}

.cs-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 9999;
  padding: 0.75rem 1rem;
  background: var(--cs-ink);
  color: #fff;
}

.cs-skip:focus {
  left: 1rem;
  top: 1rem;
}

.progress-track #progress {
  background: var(--cs-accent);
}

.cs-wrap {
  width: var(--cs-max);
  max-width: 100%;
  margin-inline: auto;
  padding-inline: 0;
}

.cs-wrap.cs-prose {
  width: var(--cs-max);
  max-width: 100%;
  margin-inline: auto;
}

/* Prose blocks sit inside .cs-wrap — do not set width here (overrides container). */
.cs-prose {
  max-width: 100%;
}

.cs-hero {
  position: relative;
  overflow: hidden;
  background: var(--cs-band);
}

.cs-hero img {
  width: 100%;
  max-height: min(52vh, 520px);
  object-fit: cover;
  object-position: center 35%;
}

.cs-hero__stripe {
  height: 6px;
  background: var(--cs-accent);
}

.cs-intro {
  padding: clamp(3rem, 7vw, 5rem) 0 clamp(2rem, 4vw, 3rem);
  background: var(--cs-surface);
}

.cs-intro__logo {
  width: 7.5rem;
  margin-bottom: 2rem;
}

.cs-intro__title {
  margin: 0 0 1.25rem;
  width: 100%;
  max-width: none;
  font-family: var(--cs-display);
  font-size: clamp(2.25rem, 5.5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.cs-intro__title em {
  font-style: normal;
  color: var(--cs-accent);
}

.cs-intro__lead {
  margin: 0;
  width: 100%;
  max-width: none;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--cs-muted);
}

.cs-meta {
  padding: clamp(2.5rem, 5vw, 3.5rem) 0;
  background-color: var(--cs-bg);
  background-image:
    linear-gradient(180deg, var(--cs-surface) 0%, transparent 55%),
    var(--cs-dot);
  background-size: auto, var(--cs-dot-size);
}

.cs-meta .cs-wrap {
  padding-inline: 0;
}

.cs-meta__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.875rem;
  width: 100%;
  margin: 0;
}

.cs-meta__item {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
  padding: 1.375rem 1.5rem;
  background: var(--cs-surface);
  border: 1px solid var(--cs-border);
  border-radius: 1rem;
  box-shadow: 0 1px 2px rgba(61, 18, 0, 0.05);
}

.cs-meta__icon {
  display: grid;
  flex-shrink: 0;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.75rem;
  background: var(--cs-o-100);
  color: var(--cs-o-600);
}

.cs-meta__icon svg {
  width: 1.25rem;
  height: 1.25rem;
  stroke: currentColor;
  fill: none;
}

.cs-meta__copy {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  min-width: 0;
}

.cs-meta__label {
  margin: 0;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cs-muted);
}

.cs-meta__value {
  margin: 0;
  font-family: var(--cs-display);
  font-size: clamp(0.9375rem, 1.4vw, 1.0625rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--cs-ink);
}

.cs-section {
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}

.cs-section:not(.cs-section--surface) {
  background-color: var(--cs-bg);
  background-image: var(--cs-dot);
  background-size: var(--cs-dot-size);
}

.cs-section--tight {
  padding: clamp(2rem, 4vw, 3rem) 0;
}

.cs-section--tight-top {
  padding-top: clamp(2rem, 4vw, 3rem);
}

.cs-section--surface {
  background: var(--cs-surface);
}

.cs-chapter {
  margin: 0 0 2.5rem;
  width: 100%;
  font-family: var(--cs-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

@media (min-width: 768px) and (prefers-reduced-motion: no-preference) {
  .cs-chapter {
    position: sticky;
    top: calc(0.875rem + 3.25rem + 0.65rem);
    z-index: 1;
    margin-bottom: 2.5rem;
    padding: 0.35rem 0 0.85rem;
  }

  .cs-section:not(.cs-section--surface) .cs-chapter {
    background: linear-gradient(180deg, var(--cs-bg) 62%, rgba(250, 246, 241, 0));
  }

  .cs-section--surface .cs-chapter {
    background: linear-gradient(180deg, var(--cs-surface) 62%, rgba(255, 251, 248, 0));
  }
}

.cs-ui-block--lead {
  margin-top: 0;
}

.cs-gallery,
.cs-gallery img,
.cs-ui-showcase,
.cs-ui-showcase img {
  position: relative;
  z-index: 0;
}

.cs-ui-showcase {
  margin: 0;
  border: none;
  border-radius: 0;
  overflow: visible;
  background: transparent;
}

.cs-ui-showcase img {
  width: 100%;
  height: auto;
  display: block;
  background: transparent;
}

.cs-mockup-row--tight {
  margin-top: 1rem;
}

.cs-ui-block .cs-sub__body {
  margin-top: -0.5rem;
  margin-bottom: 1.25rem;
}

.cs-heading {
  margin: 0 0 1rem;
  width: 100%;
  font-family: var(--cs-display);
  font-size: clamp(1.25rem, 2.2vw, 1.5rem);
  font-weight: 600;
  line-height: 1.2;
}

.cs-body {
  width: 100%;
  max-width: none;
  color: var(--cs-muted);
}

.cs-body p {
  margin: 0 0 1rem;
}

.cs-body p:last-child {
  margin-bottom: 0;
}

.cs-body + .cs-stack {
  margin-top: clamp(1.5rem, 3vw, 2rem);
}

.cs-stack {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.cs-stack__item {
  padding: 1.35rem 1.5rem;
  border: 1px solid var(--cs-border);
  border-radius: 1rem;
  background: var(--cs-surface);
}

.cs-stack__item h3 {
  margin: 0 0 0.5rem;
  font-family: var(--cs-display);
  font-size: 1.125rem;
}

.cs-stack__item p {
  margin: 0;
  color: var(--cs-muted);
}

.cs-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.cs-card {
  padding: 1.35rem;
  border-radius: 1rem;
  min-height: 100%;
}

.cs-card h4 {
  margin: 0 0 0.65rem;
  font-family: var(--cs-display);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.25;
}

.cs-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.55;
}

/* Flow: monochromatic orange progression (light → saturated) */
.cs-card--step-1 {
  background: var(--cs-o-50);
  color: var(--cs-o-800);
}

.cs-card--step-1 p {
  color: var(--cs-o-700);
}

.cs-card--step-2 {
  background: var(--cs-o-100);
  color: var(--cs-o-800);
}

.cs-card--step-2 p {
  color: var(--cs-o-700);
}

.cs-card--step-3 {
  background: var(--cs-o-300);
  color: var(--cs-o-900);
}

.cs-card--step-3 p {
  color: var(--cs-o-800);
}

.cs-card--step-4 {
  background: var(--cs-o-500);
  color: #fff;
}

.cs-card--step-4 p {
  color: rgba(255, 255, 255, 0.92);
}

.cs-contrib {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.cs-contrib__card {
  padding: 1.5rem;
  border: 1px solid var(--cs-border);
  border-radius: 1rem;
  background: var(--cs-surface);
  transition: border-color var(--cs-dur) var(--cs-ease), transform var(--cs-dur) var(--cs-ease);
}

.cs-contrib__card:hover {
  border-color: var(--cs-o-200);
  transform: translateY(-2px);
}

.cs-contrib__icon {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-bottom: 1rem;
  border-radius: 0.75rem;
  background: var(--cs-o-100);
  color: var(--cs-o-600);
}

.cs-contrib__icon svg {
  width: 1.35rem;
  height: 1.35rem;
  stroke: currentColor;
  fill: none;
}

.cs-contrib__card h3 {
  margin: 0 0 0.65rem;
  font-family: var(--cs-display);
  font-size: 1.0625rem;
}

.cs-contrib__card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--cs-muted);
}

.cs-sub {
  margin-top: clamp(2.5rem, 5vw, 4rem);
}

.cs-sub:first-of-type {
  margin-top: 0;
}

.cs-body + .cs-sub {
  margin-top: clamp(2rem, 4vw, 2.5rem);
}

.cs-sub-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
  margin-top: clamp(2.5rem, 5vw, 4rem);
}

.cs-sub-row .cs-sub--pair {
  margin-top: 0;
}

.cs-sub-row .cs-gallery--pair {
  grid-template-columns: 1fr;
  border: none;
  border-radius: 0;
  overflow: visible;
  background-color: var(--cs-bg);
  background-image: var(--cs-dot);
  background-size: var(--cs-dot-size);
}

.cs-sub-row .cs-gallery--pair img {
  width: 100%;
  height: auto;
  display: block;
  border: none;
  border-radius: 0;
  background: transparent;
}

.cs-sub__label {
  margin: 0 0 0.75rem;
  width: 100%;
  max-width: none;
  font-family: var(--cs-display);
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 600;
  line-height: 1.25;
}

.cs-sub__num {
  color: var(--cs-accent);
}

.cs-sub__body {
  margin: 0 0 1.5rem;
  width: 100%;
  max-width: none;
  color: var(--cs-muted);
}

.cs-gallery {
  display: grid;
  gap: 1rem;
}

.cs-gallery--1 {
  grid-template-columns: 1fr;
  border: none;
  border-radius: 0;
  overflow: visible;
  background-color: var(--cs-bg);
  background-image: var(--cs-dot);
  background-size: var(--cs-dot-size);
}

.cs-gallery--1 img {
  width: 100%;
  display: block;
  border: none;
  border-radius: 0;
  background: transparent;
}

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

.cs-gallery--3 img {
  width: 100%;
  border: 1px solid var(--cs-border);
  border-radius: 1rem;
  background: var(--cs-surface);
}

.cs-timeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
}

/* Timeline: same orange scale, step by step */
.cs-card--tl-1 {
  background: var(--cs-o-50);
  color: var(--cs-o-800);
}

.cs-card--tl-1 p {
  color: var(--cs-o-700);
}

.cs-card--tl-2 {
  background: var(--cs-o-100);
  color: var(--cs-o-800);
}

.cs-card--tl-2 p {
  color: var(--cs-o-700);
}

.cs-card--tl-3 {
  background: var(--cs-o-200);
  color: var(--cs-o-900);
}

.cs-card--tl-3 p {
  color: var(--cs-o-800);
}

.cs-card--tl-4 {
  background: var(--cs-o-400);
  color: #fff;
}

.cs-card--tl-4 p {
  color: rgba(255, 255, 255, 0.92);
}

.cs-card--tl-5 {
  background: var(--cs-o-600);
  color: #fff;
}

.cs-card--tl-5 p {
  color: rgba(255, 255, 255, 0.92);
}

.cs-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.cs-stat {
  padding: 1.5rem;
  border: 1px solid var(--cs-border);
  border-radius: 1rem;
  background: var(--cs-surface);
}

.cs-stat__num {
  font-family: var(--cs-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--cs-accent);
}

.cs-stat__label {
  margin: 0.75rem 0 0;
  font-size: 0.875rem;
  color: var(--cs-muted);
}

.cs-finding {
  margin-top: 2rem;
  padding: clamp(1.5rem, 3vw, 2rem);
  border: 1px solid var(--cs-border);
  border-left: 4px solid var(--cs-accent);
  border-radius: 1rem;
  background: var(--cs-surface);
}

.cs-findings-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
  align-items: stretch;
}

.cs-findings-row .cs-finding {
  margin-top: 0;
  height: 100%;
}

.cs-findings-row .cs-finding h3 {
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.25;
}

.cs-findings-row .cs-finding dd,
.cs-findings-row .cs-finding__lede,
.cs-findings-row .cs-finding__quote {
  font-size: 0.9375rem;
}

.cs-reflect-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  align-items: stretch;
}

.cs-demo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
  margin-top: clamp(2rem, 4vw, 2.5rem);
}

.cs-demo-grid .cs-sub {
  margin-top: 0;
}

.cs-reflect-grid .cs-finding {
  margin-top: 0;
  height: 100%;
}

.cs-finding__tag {
  display: inline-block;
  margin-bottom: 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cs-accent);
}

.cs-finding h3 {
  margin: 0 0 0.35rem;
  font-family: var(--cs-display);
  font-size: 1.375rem;
}

.cs-finding__lede {
  margin: 0 0 1.25rem;
  color: var(--cs-muted);
}

.cs-finding dl {
  margin: 0 0 1rem;
}

.cs-finding dt {
  margin-bottom: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cs-muted);
}

.cs-finding dd {
  margin: 0;
  color: var(--cs-ink);
}

.cs-finding__quote {
  margin: 0 0 1rem;
  padding-left: 1rem;
  border-left: 2px solid var(--cs-border);
  font-style: italic;
  color: var(--cs-muted);
}

.cs-ui-block {
  margin-top: 2.5rem;
}

.cs-ui-block h3 {
  margin: 0 0 1.25rem;
  width: 100%;
  font-family: var(--cs-display);
  font-size: 1.125rem;
}

.cs-mockup-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.cs-mockup-row img {
  width: 100%;
  border: 1px solid var(--cs-border);
  border-radius: 1rem;
  background: var(--cs-surface);
}

.cs-mockup-wide {
  margin-top: 1rem;
  border: 1px solid var(--cs-border);
  border-radius: 1rem;
  overflow: hidden;
  background: var(--cs-surface);
}

.cs-mockup-wide img {
  width: 100%;
}

.cs-footer {
  padding: 3rem 0;
  border-top: 1px solid var(--cs-border);
  background: var(--cs-surface);
}

.cs-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.cs-footer__brand {
  font-family: var(--cs-display);
  font-weight: 700;
}

.cs-footer__copy {
  margin: 0.35rem 0 0;
  font-size: 0.875rem;
  color: var(--cs-muted);
}

.cs-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
}

@media (max-width: 1024px) {
  .cs-flow,
  .cs-timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .cs-sub-row .cs-gallery--pair {
    grid-template-columns: 1fr;
  }

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

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

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

@media (max-width: 768px) {
  .cs-meta__grid {
    grid-template-columns: 1fr;
  }

  .cs-meta__item {
    padding: 1.25rem;
  }

  .cs-stack,
  .cs-contrib,
  .cs-gallery--3,
  .cs-mockup-row {
    grid-template-columns: 1fr;
  }

  .cs-flow,
  .cs-timeline {
    grid-template-columns: 1fr;
  }

}

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