:root {
  --green-950: #062016;
  --green-900: #0b3525;
  --green-800: #164734;
  --green-700: #00643a;
  --green-100: #e5eee7;
  --gold-500: #f4c430;
  --cream: #f7f3e8;
  --cream-2: #fbf8ef;
  --charcoal: #202724;
  --muted: #5b645f;
  --line: rgba(11, 53, 37, 0.18);
  --white: #ffffff;
  --max-width: 1120px;
  --text-width: 700px;
  --radius: 8px;
  --shadow: 0 18px 55px rgba(6, 32, 22, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--charcoal);
  font-family: Inter, "Source Sans 3", "IBM Plex Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

body.nav-open {
  overflow: hidden;
}

img {
  max-width: 100%;
}

a {
  color: inherit;
}

p {
  margin: 0 0 1rem;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--green-950);
  line-height: 1.08;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(3.3rem, 10vw, 7.5rem);
}

h2 {
  font-size: clamp(1.55rem, 2.4vw, 2.45rem);
}

h3 {
  font-size: 1.05rem;
}

h4 {
  font-size: 1rem;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 1000;
  transform: translateY(-150%);
  background: var(--gold-500);
  color: var(--green-950);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 243, 232, 0.92);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(16px);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  border-color: var(--line);
  box-shadow: 0 10px 30px rgba(6, 32, 22, 0.06);
}

.nav {
  width: min(var(--max-width), calc(100% - 2rem));
  min-height: 70px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand,
.nav-menu a,
.button,
.text-link,
.site-footer a {
  text-decoration: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--green-950);
  font-weight: 750;
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  color: var(--charcoal);
  font-weight: 850;
  letter-spacing: 0;
  line-height: 1;
}

.wordmark-ai {
  color: var(--green-700);
}

.wordmark-x {
  color: var(--gold-500);
  font-weight: 900;
}

.wordmark-change {
  color: var(--charcoal);
}

.wordmark-small {
  font-size: 1rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: clamp(0.8rem, 2vw, 1.5rem);
}

.nav-menu a {
  color: var(--green-900);
  font-size: 0.94rem;
  font-weight: 650;
}

.nav-menu a:hover,
.nav-menu a:focus-visible,
.nav-menu a.is-active {
  color: var(--green-700);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--cream-2);
}

.nav-toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--green-950);
}

.section {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(4rem, 8vw, 6.5rem) 0;
}

main [id] {
  scroll-margin-top: 88px;
}

.hero {
  min-height: min(760px, calc(100vh - 70px));
  display: grid;
  align-items: center;
}

.hero-visual {
  width: min(920px, 100%);
  margin: 0 auto;
}

.tagline {
  max-width: 680px;
  margin: 1.35rem auto 0;
  color: var(--green-900);
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  font-style: italic;
  font-weight: 500;
  line-height: 1.35;
  text-align: center;
}

.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--green-700);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem;
  margin-top: 1.8rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.82rem 1.1rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 750;
  line-height: 1.1;
}

.button-primary {
  background: var(--green-800);
  color: var(--white);
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.5);
  color: var(--green-950);
}

.button:hover,
.text-link:hover {
  transform: translateY(-1px);
}

.button,
.text-link {
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

.button:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--gold-500);
  outline-offset: 3px;
}

.marketplace-diagram {
  position: relative;
  min-height: 360px;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 50% 50%, rgba(244, 196, 48, 0.14), transparent 30%),
    linear-gradient(90deg, rgba(0, 100, 58, 0.08), transparent 48%, rgba(0, 100, 58, 0.08)),
    var(--cream-2);
  box-shadow: var(--shadow);
}

.marketplace-diagram::before {
  content: "";
  position: absolute;
  inset: 1rem;
  border: 1px solid rgba(11, 53, 37, 0.12);
  pointer-events: none;
}

.diagram-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.diagram-lines path {
  fill: none;
  stroke: rgba(0, 100, 58, 0.46);
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
}

.diagram-node {
  position: absolute;
  z-index: 1;
  width: 15px;
  height: 15px;
  border: 2px solid var(--cream-2);
  border-radius: 50%;
  background: var(--green-700);
  box-shadow: 0 0 0 5px rgba(0, 100, 58, 0.12);
}

.node-a { left: 10%; top: 17%; }
.node-b { left: 21%; top: 50%; width: 19px; height: 19px; }
.node-c { left: 12%; bottom: 18%; width: 12px; height: 12px; }
.node-d { right: 10%; top: 17%; width: 18px; height: 18px; }
.node-e { right: 13%; top: 54%; width: 14px; height: 14px; }
.node-f { right: 7%; bottom: 17%; width: 20px; height: 20px; }

.diagram-center {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  width: min(210px, 42vw);
  min-height: 148px;
  display: grid;
  place-items: center;
  align-content: center;
  padding: 1.25rem;
  border: 1px solid var(--line);
  background: var(--cream-2);
  color: var(--muted);
  text-align: center;
  transform: translate(-50%, -50%);
  box-shadow: 0 20px 48px rgba(6, 32, 22, 0.2);
}

.diagram-center span {
  font-size: 1.15rem;
}

.diagram-center p {
  margin: 0;
  font-size: 0.9rem;
}

.diagram-center p span {
  color: var(--gold-500);
  font-weight: 900;
}

.diagram-center .pilot-marker {
  margin-top: 0.7rem;
  padding-top: 0.55rem;
  border-top: 1px solid var(--line);
  color: var(--green-800);
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.diagram-label {
  position: absolute;
  bottom: 1.4rem;
  z-index: 1;
  color: var(--green-950);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.label-left { left: 1.4rem; }
.label-right { right: 1.4rem; }

.split-section,
.process-section,
.closing-section {
  display: grid;
  grid-template-columns: minmax(220px, 0.72fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
  border-top: 1px solid var(--line);
}

.section-heading h2 {
  max-width: 18ch;
}

.section-body {
  max-width: var(--text-width);
  color: var(--muted);
}

.process-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.process-list li {
  display: grid;
  grid-template-columns: 44px minmax(120px, 0.35fr) minmax(0, 1fr);
  gap: 1rem;
  align-items: baseline;
  padding: 1.1rem;
  background: var(--cream-2);
}

.process-list span {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--green-700);
  border-radius: 50%;
  color: var(--green-700);
  font-weight: 800;
}

.process-list p {
  margin: 0;
  color: var(--muted);
}

/* First active project; later projects can reuse project-feature and project-status. */
.projects-section {
  border-top: 1px solid var(--line);
}

.projects-heading {
  margin-bottom: 2rem;
}

.projects-heading h2 {
  max-width: none;
}

.projects-heading > p:last-child {
  margin: 0.55rem 0 0;
  color: var(--green-800);
  font-size: 1.15rem;
  font-weight: 600;
}

.project-feature {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  padding: clamp(1.4rem, 3vw, 2.5rem);
  border: 1px solid var(--line);
  background: var(--cream-2);
}

.project-intro h3 {
  margin: 1rem 0 0.7rem;
  font-size: clamp(1.65rem, 2.6vw, 2.35rem);
}

.project-status {
  display: inline-block;
  padding: 0.4rem 0.65rem;
  border-left: 3px solid var(--gold-500);
  background: var(--green-900);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.25;
  text-transform: uppercase;
}

.project-collaboration {
  color: var(--green-800);
  font-weight: 700;
}

.project-collaboration span {
  color: #9b7110;
}

.project-underway {
  max-width: 35ch;
  color: var(--muted);
}

.project-intro .button {
  margin-top: 0.55rem;
}

.project-rotator {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.project-rotator.is-enhanced .project-slides {
  display: grid;
}

.project-rotator.is-enhanced .project-slide {
  grid-area: 1 / 1;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity 260ms ease, visibility 260ms ease;
}

.project-rotator.is-enhanced .project-slide.is-active {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

.project-slide:not(:last-child) {
  margin-bottom: 1.5rem;
}

.project-rotator.is-enhanced .project-slide:not(:last-child) {
  margin-bottom: 0;
}

.project-slide p:not(.project-slide-label) {
  color: var(--muted);
}

.project-slide p:last-child {
  margin-bottom: 0;
}

.project-slide-label {
  margin-bottom: 1rem;
  color: var(--green-800);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-exploration {
  padding: 0 0 0 1.2rem;
  border-left: 3px solid var(--gold-500);
}

.project-exploration h4 {
  margin-bottom: 0.8rem;
}

.project-exploration ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.45rem 1.25rem;
  padding-right: 1.2rem;
}

.project-exploration li {
  position: relative;
  padding-left: 0.85rem;
  color: var(--green-950);
  font-size: 0.94rem;
}

.project-exploration li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green-700);
}

.project-interests {
  color: var(--green-950);
}

.project-interests strong {
  display: block;
}

.project-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.5rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
}

.project-controls[hidden] {
  display: none;
}

.project-count {
  color: var(--muted);
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.project-control-buttons {
  display: flex;
  gap: 0.4rem;
}

.project-control-buttons button {
  min-width: 36px;
  min-height: 36px;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: transparent;
  color: var(--green-900);
  cursor: pointer;
  font: inherit;
  font-weight: 750;
  line-height: 1;
}

.project-control-buttons button:hover {
  background: var(--green-100);
}

.project-control-buttons .project-play-toggle {
  min-width: 60px;
  font-size: 0.8rem;
}

.projects-next {
  margin-top: 1.5rem;
  padding-top: 1.3rem;
  border-top: 1px solid var(--line);
}

.projects-next p {
  margin-bottom: 0.3rem;
}

.projects-next .text-link {
  color: var(--green-700);
}

.projects-next .text-link span {
  margin-left: 0.3rem;
}

.audience-section {
  width: 100%;
  max-width: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  padding-left: max(1rem, calc((100% - var(--max-width)) / 2));
  padding-right: max(1rem, calc((100% - var(--max-width)) / 2));
  background: var(--line);
}

.audience-card {
  padding: clamp(1.5rem, 4vw, 3rem);
  background: var(--green-950);
  color: rgba(255, 255, 255, 0.78);
}

.audience-card:nth-child(2) {
  background: var(--green-900);
}

.audience-card h2,
.closing-panel h2 {
  color: var(--white);
  max-width: 18ch;
}

.audience-card .eyebrow {
  color: var(--gold-500);
}

.audience-card p {
  max-width: 58ch;
}

.audience-emphasis {
  margin-top: 1.3rem;
  padding-top: 1.1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--white);
  font-weight: 700;
}

.audience-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem 1.2rem;
  margin-top: 1.2rem;
}

.audience-actions .text-link {
  margin-top: 0;
}

.button-light {
  background: var(--gold-500);
  color: var(--green-950);
}

.text-link {
  display: inline-flex;
  margin-top: 0.3rem;
  color: var(--gold-500);
  font-weight: 800;
}

.closing-panel {
  width: 100%;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--green-950);
  color: rgba(255, 255, 255, 0.8);
}

.closing-section {
  display: block;
}

.closing-panel p {
  max-width: none;
  text-align: left;
}

.closing-perfect {
  color: var(--gold-500);
  font-size: 1.2rem;
  font-weight: 800;
}

.closing-panel p strong {
  color: var(--white);
}

.closing-panel .button-secondary {
  border-color: rgba(255, 255, 255, 0.55);
  background: transparent;
  color: var(--white);
}

.closing-panel .button-row {
  justify-content: flex-start;
}

.site-footer {
  position: relative;
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0;
  display: grid;
  place-items: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.96rem;
  text-align: center;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  position: absolute;
  right: 0;
  color: var(--green-800);
  font-weight: 800;
}

.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 420ms ease, transform 420ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    left: 1rem;
    right: 1rem;
    top: 76px;
    display: grid;
    gap: 0;
    padding: 0.5rem;
    border: 1px solid var(--line);
    background: var(--cream-2);
    box-shadow: var(--shadow);
    transform: translateY(-130%);
    visibility: hidden;
    transition: transform 200ms ease, visibility 200ms ease;
  }

  .nav-menu.is-open {
    transform: translateY(0);
    visibility: visible;
  }

  .nav-menu a {
    padding: 0.8rem;
  }

  .hero,
  .split-section,
  .process-section,
  .project-feature,
  .closing-section,
  .audience-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 4.5rem;
  }

  .marketplace-diagram {
    min-height: 310px;
  }

  .process-list li {
    grid-template-columns: 44px 1fr;
  }

  .process-list p {
    grid-column: 2;
  }

}

@media (max-width: 620px) {
  body {
    font-size: 16px;
  }

  .section {
    width: min(var(--max-width), calc(100% - 1.25rem));
    padding: 3.5rem 0;
  }

  .button-row,
  .button {
    width: 100%;
  }

  .process-list li {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .process-list p {
    grid-column: auto;
  }

  .marketplace-diagram {
    min-height: 280px;
  }

  .project-exploration ul {
    grid-template-columns: 1fr;
  }

  .project-rotator {
    flex-direction: column-reverse;
  }

  .project-controls {
    margin: 0 0 1.25rem;
    padding: 0 0 0.85rem;
    border-top: 0;
    border-bottom: 1px solid var(--line);
  }

  .audience-actions,
  .audience-actions .button {
    width: 100%;
  }

  .diagram-center {
    width: min(180px, 58vw);
    min-height: 112px;
  }

  .diagram-label {
    font-size: 0.68rem;
    letter-spacing: 0.08em;
  }

  .site-footer {
    display: grid;
    gap: 0.6rem;
  }

  .site-footer a {
    position: static;
  }
}

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

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

  .reveal {
    opacity: 1;
    transform: none;
  }
}