:root {
  color-scheme: light;
  --ink: #1f2523;
  --muted: #5f6964;
  --paper: #f7f3ea;
  --paper-strong: #fffaf0;
  --graphite: #202826;
  --teal: #2f7772;
  --red: #a44e43;
  --gold: #c49853;
  --line: rgba(31, 37, 35, 0.14);
  --shadow: 0 18px 60px rgba(31, 37, 35, 0.14);
  --radius: 8px;
  --header-height: 76px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
}

button,
a {
  font: inherit;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -4rem;
  z-index: 10;
  padding: 0.65rem 0.9rem;
  background: var(--ink);
  color: var(--paper);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 8;
  min-height: var(--header-height);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.5rem;
  padding: 0.8rem clamp(1rem, 4vw, 3rem);
  background: rgba(247, 243, 234, 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 760;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-size: 0.76rem;
  letter-spacing: 0;
}

.top-nav {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2vw, 1.6rem);
  color: var(--muted);
  font-size: 0.94rem;
}

.top-nav a {
  text-decoration: none;
}

.top-nav a:hover {
  color: var(--ink);
}

.control-shell {
  display: flex;
  align-items: end;
  gap: 0.65rem;
}

.segmented-control {
  display: grid;
  grid-template-columns: repeat(2, minmax(2.7rem, 1fr));
  gap: 0.18rem;
  margin: 0;
  padding: 0.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 250, 240, 0.84);
}

.segmented-control.wide {
  grid-template-columns: repeat(2, minmax(5.4rem, 1fr));
}

.segmented-control legend {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.segmented-control button,
.button,
.icon-button {
  border: 0;
  cursor: pointer;
}

.segmented-control button {
  min-height: 2.25rem;
  padding: 0 0.7rem;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  white-space: nowrap;
}

.segmented-control button[aria-pressed="true"] {
  background: var(--graphite);
  color: var(--paper);
}

.hero {
  position: relative;
  min-height: calc(100svh - var(--header-height));
  display: grid;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}

.hero-image {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(10, 12, 11, 0.9), rgba(10, 12, 11, 0.64) 45%, rgba(10, 12, 11, 0.18)),
    linear-gradient(0deg, rgba(10, 12, 11, 0.28), rgba(10, 12, 11, 0.04));
}

.hero-content {
  width: min(760px, calc(100% - 2rem));
  margin-left: clamp(1rem, 7vw, 6rem);
  padding-block: 5rem 7rem;
  color: var(--paper-strong);
}

.eyebrow,
.section-kicker {
  margin: 0 0 0.75rem;
  color: var(--gold);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 11ch;
  margin: 0;
  font-size: clamp(3rem, 7vw, 6.8rem);
  line-height: 0.96;
  letter-spacing: 0;
  text-shadow: 0 2px 22px rgba(0, 0, 0, 0.36);
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 4.25rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.25;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 58ch;
  margin: 1.35rem 0 0;
  color: rgba(255, 250, 240, 0.94);
  font-size: clamp(1.03rem, 2vw, 1.26rem);
  text-shadow: 0 1px 14px rgba(0, 0, 0, 0.34);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.72rem 1rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 760;
}

.button.primary {
  background: var(--paper-strong);
  color: var(--ink);
}

.button.ghost {
  border: 1px solid rgba(255, 250, 240, 0.42);
  background: rgba(10, 12, 11, 0.28);
  color: var(--paper-strong);
}

.mode-status {
  display: grid;
  gap: 0.3rem;
  max-width: 1180px;
  margin: 1.25rem auto 0;
  padding: 0.9rem clamp(1rem, 3vw, 1.4rem);
  color: var(--muted);
}

.status-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.status-dot {
  flex: 0 0 0.66rem;
  width: 0.66rem;
  height: 0.66rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--teal);
}

.status-switch {
  justify-self: start;
  margin-left: calc(0.66rem + 0.65rem);
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--teal);
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.status-switch:hover,
.status-switch:focus-visible {
  color: var(--ink);
}

.status-info-link {
  display: inline-grid;
  flex: 0 0 1.25rem;
  place-items: center;
  width: 1.25rem;
  height: 1.25rem;
  aspect-ratio: 1;
  border: 1px solid rgba(47, 119, 114, 0.34);
  border-radius: 50%;
  background: rgba(47, 119, 114, 0.1);
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 900;
  line-height: 1;
  text-decoration: none;
}

.status-info-link:hover,
.status-info-link:focus-visible {
  background: var(--teal);
  color: var(--paper-strong);
}

.about-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.4rem;
}

.about-copy {
  display: grid;
  gap: 1.4rem;
}

.about-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.about-fact,
.timeline-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 250, 240, 0.74);
}

.about-fact {
  padding: 1rem;
}

.about-fact strong {
  display: block;
  color: var(--red);
  font-size: 0.84rem;
}

.about-fact span {
  display: block;
  margin-top: 0.35rem;
  font-weight: 780;
  line-height: 1.35;
}

.about-timeline {
  display: grid;
  gap: 0.75rem;
}

.timeline-item {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1rem;
  padding: 1rem;
}

.timeline-item time {
  color: var(--teal);
  font-weight: 800;
}

.timeline-item p {
  margin: 0.28rem 0 0;
  color: var(--muted);
}

.section {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.section.two-column {
  display: grid;
  grid-template-columns: 0.4fr 0.85fr;
  gap: clamp(1.5rem, 5vw, 5rem);
}

.section-lead,
.section-head p,
.workflow p,
.split-band p {
  max-width: 68ch;
  color: var(--muted);
  font-size: 1.06rem;
}

.principle-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.principle,
.project-card,
.article-card,
.method-step,
.demo-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 250, 240, 0.74);
}

.principle {
  padding: 1.25rem;
}

.principle p,
.project-card p,
.article-card p,
.method-step p {
  color: var(--muted);
}

.band {
  width: 100%;
  max-width: none;
  padding-inline: max(1rem, calc((100vw - 1180px) / 2));
  background: var(--graphite);
  color: var(--paper-strong);
}

.band .section-head p,
.band .method-step p {
  color: rgba(247, 243, 234, 0.72);
}

.section-head {
  display: grid;
  gap: 0.7rem;
  margin-bottom: 2rem;
}

.section-head.compact {
  max-width: 760px;
}

.method-map {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.method-step {
  position: relative;
  min-height: 15rem;
  padding: 1.2rem;
  background: rgba(255, 250, 240, 0.08);
  border-color: rgba(255, 250, 240, 0.18);
}

.method-step .index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin-bottom: 1.2rem;
  border: 1px solid rgba(255, 250, 240, 0.24);
  color: var(--gold);
  font-weight: 800;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.project-card {
  display: grid;
  gap: 1rem;
  padding: 1.2rem;
  min-height: 21rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding: 0 0.55rem;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
}

.card-link {
  align-self: end;
  color: var(--teal);
  font-weight: 800;
  text-decoration: none;
}

.split-band {
  width: 100%;
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 0.7fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  padding-inline: max(1rem, calc((100vw - 1180px) / 2));
  background: #e8eee7;
}

.demo-panel {
  padding: 1.1rem;
  background: var(--paper-strong);
  box-shadow: var(--shadow);
}

.demo-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-weight: 800;
}

.icon-button {
  display: grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  background: var(--graphite);
  color: var(--paper);
  font-size: 1.2rem;
}

.quality-meter {
  height: 0.7rem;
  margin: 1.2rem 0;
  background: #d6d1c5;
  overflow: hidden;
}

.quality-meter span {
  display: block;
  width: var(--score);
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--gold), var(--red));
}

.demo-panel dl {
  display: grid;
  gap: 0.75rem;
  margin: 0;
}

.demo-panel div.fact {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 1rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--line);
}

.demo-panel dt {
  color: var(--muted);
}

.demo-panel dd {
  margin: 0;
  font-weight: 750;
}

.article-list {
  display: grid;
  gap: 0.8rem;
}

.article-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1.1rem 1.2rem;
}

.article-card p {
  margin: 0.35rem 0 0;
}

.article-meta {
  color: var(--red);
  font-size: 0.86rem;
  font-weight: 800;
  white-space: nowrap;
}

.workflow {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 0.8fr);
  gap: clamp(2rem, 5vw, 5rem);
}

.workflow-page {
  display: grid;
  gap: 2rem;
}

.workflow-page .workflow {
  width: 100%;
  padding-top: 0;
}

.workflow-hero {
  padding-top: clamp(3rem, 7vw, 6rem);
}

.workflow-hero h1 {
  max-width: 15ch;
  color: var(--ink);
  font-size: clamp(2.6rem, 6vw, 5.6rem);
}

.back-link {
  color: var(--teal);
  font-weight: 800;
  text-decoration: none;
}

.back-link:hover {
  color: var(--ink);
}

.workflow-steps {
  counter-reset: workflow;
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.workflow-steps li {
  counter-increment: workflow;
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.9rem;
  padding: 1rem;
  border-left: 3px solid var(--teal);
  background: rgba(255, 250, 240, 0.72);
}

.workflow-steps li::before {
  content: counter(workflow);
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  background: var(--ink);
  color: var(--paper);
  font-weight: 800;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem clamp(1rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

[data-transitioning="true"] [data-content],
[data-transitioning="true"] .principle,
[data-transitioning="true"] .project-card,
[data-transitioning="true"] .article-card,
[data-transitioning="true"] .method-step,
[data-transitioning="true"] .about-fact,
[data-transitioning="true"] .timeline-item,
[data-transitioning="true"] .workflow-steps li,
[data-transitioning="true"] .demo-panel dl {
  animation: contentFade 180ms ease-out;
}

@keyframes contentFade {
  from {
    opacity: 0.3;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .top-nav {
    justify-self: start;
    overflow-x: auto;
    width: 100%;
    padding-bottom: 0.2rem;
  }

  .control-shell {
    align-items: stretch;
    width: 100%;
  }

  .segmented-control,
  .segmented-control.wide {
    flex: 1;
  }

  .section.two-column,
  .about-section,
  .split-band,
  .workflow {
    grid-template-columns: 1fr;
  }

  .principle-grid,
  .project-grid,
  .method-map,
  .about-facts {
    grid-template-columns: repeat(2, 1fr);
  }

}

@media (max-width: 660px) {
  :root {
    --header-height: 144px;
  }

  .brand-text {
    white-space: normal;
  }

  .control-shell {
    flex-direction: column;
  }

  .hero {
    min-height: calc(92svh - var(--header-height));
  }

  .hero-content {
    margin-inline: 1rem;
    padding-block: 4rem 5.5rem;
  }

  h1 {
    max-width: 10ch;
  }

  .principle-grid,
  .project-grid,
  .method-map,
  .about-facts {
    grid-template-columns: 1fr;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }

  .article-card {
    grid-template-columns: 1fr;
  }

  .demo-panel div.fact {
    grid-template-columns: 1fr;
  }
}