:root {
  color-scheme: light;
  --ink: oklch(23% 0.035 286);
  --muted: oklch(47% 0.025 286);
  --paper: oklch(98.5% 0.008 286);
  --paper-deep: oklch(94.5% 0.02 286);
  --line: oklch(84% 0.025 286);
  --violet: oklch(49% 0.18 294);
  --violet-dark: oklch(30% 0.12 294);
  --violet-ink: oklch(20% 0.075 294);
  --violet-soft: oklch(90% 0.065 294);
  --hero-ink: oklch(97% 0.012 294);
  --signal: oklch(81% 0.15 135);
  font-family: "Avenir Next", Avenir, "Segoe UI Variable", "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 5px;
}

.skip-link {
  background: var(--paper);
  color: var(--ink);
  font-weight: 700;
  left: 1rem;
  padding: 0.7rem 1rem;
  position: fixed;
  top: 1rem;
  transform: translateY(-180%);
  transition: transform 180ms cubic-bezier(0.22, 1, 0.36, 1);
  z-index: 20;
}

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

.site-header {
  align-items: center;
  background: var(--violet);
  color: var(--hero-ink);
  display: flex;
  justify-content: space-between;
  padding: 1.25rem clamp(1.25rem, 4vw, 4rem);
  position: relative;
  z-index: 40;
}

.wordmark,
.footer-mark {
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -0.06em;
  text-decoration: none;
}

.site-header nav {
  align-items: center;
  display: flex;
  font-size: 0.86rem;
  font-weight: 650;
  gap: clamp(1rem, 3vw, 2.4rem);
}

.site-header nav a {
  text-decoration: none;
}

.site-header nav a:hover {
  text-decoration: underline;
}

.site-header nav .spec-switcher__option:hover,
.site-header nav .spec-switcher__option:focus-visible {
  text-decoration: none;
}

.hero {
  background: var(--violet);
  color: var(--hero-ink);
  min-height: min(860px, 88svh);
  padding: clamp(4.5rem, 9vw, 9rem) clamp(1.25rem, 4vw, 4rem) 2rem;
}

.hero-grid {
  align-items: center;
  display: grid;
  gap: clamp(3rem, 7vw, 8rem);
  grid-template-columns: minmax(0, 1.35fr) minmax(20rem, 0.65fr);
  margin: 0 auto;
  max-width: 92rem;
}

.hero-copy {
  animation: enter 700ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.project-name {
  font-size: clamp(2.25rem, 4.1vw, 4.9rem);
  font-weight: 780;
  letter-spacing: -0.015em;
  line-height: 0.98;
  margin: 0 0 clamp(2.75rem, 5vw, 4.75rem);
  max-width: 22ch;
  text-wrap: balance;
}

.hero-thesis {
  color: oklch(92% 0.025 294 / 88%);
  font-size: clamp(2.4rem, 3.9vw, 4.5rem);
  font-weight: 680;
  letter-spacing: -0.06em;
  line-height: 0.92;
  margin: 0;
  max-width: 21ch;
  text-wrap: balance;
}

.hero-thesis span {
  color: var(--violet-ink);
  display: block;
}

.hero-intro {
  font-size: clamp(1.08rem, 1.6vw, 1.35rem);
  line-height: 1.55;
  margin: clamp(2rem, 4vw, 3.5rem) 0 0;
  max-width: 62ch;
}

.hero-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2.1rem;
}

.action {
  align-items: center;
  display: inline-flex;
  font-size: 0.92rem;
  font-weight: 750;
  gap: 0.75rem;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0.75rem 1.15rem;
  text-decoration: none;
  transition: background-color 180ms cubic-bezier(0.22, 1, 0.36, 1), color 180ms cubic-bezier(0.22, 1, 0.36, 1), transform 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

.action:hover {
  transform: translateY(-2px);
}

.action-primary {
  background: var(--hero-ink);
  color: var(--violet-ink);
}

.action-primary:hover {
  background: var(--signal);
}

.action-secondary {
  border: 1px solid oklch(90% 0.04 294 / 52%);
}

.action-secondary:hover {
  background: var(--violet-dark);
}

.agent-proof {
  animation: enter 760ms 120ms cubic-bezier(0.22, 1, 0.36, 1) both;
  background: var(--violet-dark);
  color: var(--hero-ink);
  margin: 0;
  min-width: 0;
}

.agent-question,
.agent-conclusion {
  padding-left: clamp(1.15rem, 2.5vw, 1.6rem);
  padding-right: clamp(1.15rem, 2.5vw, 1.6rem);
}

.agent-proof [data-rdf-target] {
  -webkit-appearance: none;
  appearance: none;
  border: 0;
  border-radius: 0;
  cursor: pointer;
  font: inherit;
  margin: 0;
  position: relative;
  text-align: left;
  text-decoration: none;
  transition: box-shadow 180ms cubic-bezier(0.22, 1, 0.36, 1), filter 180ms cubic-bezier(0.22, 1, 0.36, 1);
  width: 100%;
}

.agent-proof [data-rdf-target]:hover,
.agent-proof [data-rdf-target]:focus-visible,
.agent-proof [data-rdf-target].is-rdf-selected {
  box-shadow: inset 0 0 0 2px var(--signal);
  filter: brightness(1.06);
  outline: 0;
  z-index: 1;
}

.agent-question {
  display: grid;
  gap: 0.55rem;
  padding-bottom: 1.4rem;
  padding-top: 1.4rem;
}

.agent-question span,
.authority-boundary span {
  color: var(--violet-soft);
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.agent-question strong {
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
  text-wrap: balance;
}

.agent-conclusion {
  background: var(--hero-ink);
  color: var(--violet-ink);
  display: block;
  padding-bottom: 1.35rem;
  padding-top: 1.35rem;
}

.conclusion-status {
  align-items: center;
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 800;
  gap: 0.5rem;
}

.conclusion-status i {
  background: oklch(67% 0.17 67);
  border-radius: 50%;
  height: 0.55rem;
  width: 0.55rem;
}

.agent-conclusion p {
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0.75rem 0 0;
}

.agent-trace {
  list-style: none;
  margin: 0;
  padding: 0;
}

.agent-trace li {
  border-bottom: 1px solid oklch(75% 0.08 294 / 25%);
}

.agent-trace-target {
  align-items: baseline;
  background: transparent;
  display: grid;
  gap: 1rem;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  padding: 0.8rem clamp(1.15rem, 2.5vw, 1.6rem);
}

.agent-trace span {
  color: var(--violet-soft);
  font-size: 0.7rem;
}

.agent-trace strong {
  font-size: 0.83rem;
}

.authority-boundary {
  background: var(--hero-ink);
  color: var(--violet-ink);
  display: grid;
}

.authority-statement {
  align-items: baseline;
  display: grid;
  gap: 1rem;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  min-height: 2.75rem;
  padding: 0.7rem clamp(1.15rem, 2.5vw, 1.6rem);
}

.authority-statement + .authority-statement {
  border-top: 1px solid var(--line);
}

.authority-boundary span {
  color: var(--muted);
}

.authority-boundary strong {
  font-size: 0.8rem;
}

.grounded-case,
.architecture,
.work,
.north-star,
footer {
  padding-left: clamp(1.25rem, 4vw, 4rem);
  padding-right: clamp(1.25rem, 4vw, 4rem);
}

.grounded-case {
  margin: 0 auto;
  max-width: 92rem;
  padding-bottom: clamp(6rem, 12vw, 12rem);
  padding-top: clamp(6rem, 12vw, 12rem);
}

.case-example-label {
  align-self: start;
  background: var(--violet);
  color: var(--hero-ink);
  font-size: 0.66rem;
  font-weight: 750;
  letter-spacing: 0.09em;
  margin: 0;
  padding: 0.45rem 0.65rem 0.4rem;
  text-transform: uppercase;
  width: max-content;
}

.case-heading {
  display: grid;
  gap: clamp(1.5rem, 4vw, 4rem);
  grid-template-columns: minmax(8rem, 0.35fr) minmax(0, 1fr) minmax(16rem, 0.65fr);
}

.grounded-case h2,
.section-heading h2,
.north-star h2 {
  letter-spacing: -0.055em;
  text-wrap: balance;
}

.grounded-case h2 {
  font-size: clamp(2.8rem, 5.8vw, 6.2rem);
  line-height: 0.94;
  margin: 0;
}

.case-intro {
  align-self: end;
}

.case-intro p,
.case-action > p {
  font-size: 1.03rem;
  line-height: 1.7;
  margin: 0;
  max-width: 62ch;
}

.case-intro p + p {
  color: var(--muted);
  margin-top: 1.15rem;
}

.decision-path {
  list-style: none;
  margin: clamp(4rem, 8vw, 7rem) 0 0;
  padding: 0;
}

.decision-path li {
  align-items: baseline;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(8rem, 0.45fr) minmax(14rem, 0.8fr) minmax(16rem, 0.75fr);
  padding: clamp(1.25rem, 2.4vw, 1.9rem) 0;
}

.decision-path li:last-child {
  border-bottom: 1px solid var(--line);
}

.path-kind {
  font-size: 0.72rem;
  font-weight: 750;
}

.path-kind,
.path-detail {
  color: var(--muted);
}

.decision-path strong {
  font-size: clamp(1.08rem, 1.8vw, 1.35rem);
  letter-spacing: -0.02em;
}

.path-link {
  color: inherit;
  cursor: pointer;
  text-decoration-color: transparent;
  transition: color 180ms cubic-bezier(0.22, 1, 0.36, 1), text-decoration-color 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

.path-link:hover,
.path-link:focus-visible,
.path-link.is-rdf-selected {
  color: var(--violet);
  text-decoration-color: currentColor;
}

.path-detail {
  font-size: 0.9rem;
  line-height: 1.55;
}

.case-action {
  align-items: end;
  display: grid;
  gap: clamp(2rem, 5vw, 5rem);
  grid-template-columns: minmax(15rem, 0.65fr) minmax(20rem, 1.35fr);
  margin-top: clamp(3rem, 6vw, 5rem);
}

.case-action > p {
  color: var(--muted);
}

.case-link {
  align-items: center;
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
  display: grid;
  gap: 1.5rem;
  grid-template-columns: minmax(0, 1fr) auto;
  padding: 1.5rem 0;
  text-decoration: none;
}

.case-link > span:first-child {
  display: grid;
  gap: 0.35rem;
}

.case-link strong {
  font-size: clamp(1.2rem, 2.2vw, 1.75rem);
  letter-spacing: -0.03em;
  transition: color 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

.case-link small {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.case-link > span:last-child {
  color: var(--violet);
  font-size: 1.5rem;
}

.case-link:hover strong {
  color: var(--violet);
}

.architecture {
  background: var(--paper-deep);
  padding-bottom: clamp(5rem, 10vw, 9rem);
  padding-top: clamp(5rem, 10vw, 9rem);
}

.section-heading {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: minmax(0, 1fr) minmax(15rem, 0.55fr);
  margin: 0 auto clamp(4rem, 8vw, 7rem);
  max-width: 92rem;
}

.section-heading h2 {
  font-size: clamp(2.6rem, 5vw, 5.4rem);
  line-height: 0.98;
  margin: 0;
  max-width: 13ch;
}

.section-heading > p:last-child {
  color: var(--muted);
  line-height: 1.65;
  margin: 0;
  max-width: 46ch;
}

.layers {
  list-style: none;
  margin: 0 auto;
  max-width: 92rem;
  padding: 0;
}

.layers li {
  align-items: baseline;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(12rem, 0.7fr) minmax(15rem, 1fr) minmax(15rem, 0.75fr);
  padding: 1.45rem 0 1.65rem;
}

.layers li:last-child {
  border-bottom: 1px solid var(--line);
}

.layers h3 {
  font-size: clamp(1.15rem, 2vw, 1.55rem);
  letter-spacing: -0.025em;
  margin: 0;
}

.layers p,
.layer-territory {
  line-height: 1.55;
}

.layers p {
  margin: 0;
}

.layer-territory {
  color: var(--muted);
  font-size: 0.86rem;
}

.layer-territory a {
  color: inherit;
  text-decoration-color: color-mix(in oklch, var(--violet) 32%, transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.layer-territory a:hover {
  color: var(--violet);
  text-decoration-color: currentColor;
}

.work {
  padding-bottom: clamp(7rem, 13vw, 13rem);
  padding-top: clamp(7rem, 13vw, 13rem);
}

.work-heading {
  grid-template-columns: minmax(0, 1fr);
}

.work-heading h2 {
  max-width: 16ch;
}

.work-list {
  list-style: none;
  margin: 0 auto;
  max-width: 92rem;
  padding: 0;
}

.work-list li {
  border-top: 1px solid var(--line);
}

.work-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.work-list a {
  align-items: center;
  display: grid;
  gap: 1.25rem;
  grid-template-columns: minmax(0, 1fr) minmax(8rem, 0.25fr) 2rem;
  padding: clamp(1.4rem, 3vw, 2.2rem) 0;
  text-decoration: none;
}

.work-list a:hover .work-copy strong,
.source-link:hover {
  color: var(--violet);
}

.work-type {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
}

.work-copy {
  display: grid;
  gap: 0.35rem;
}

.work-copy strong {
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  letter-spacing: -0.035em;
  transition: color 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

.work-copy > span {
  color: var(--muted);
  line-height: 1.5;
}

.work-arrow {
  color: var(--violet);
  font-size: 1.4rem;
  justify-self: end;
}

.north-star {
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(6rem, 12vw, 11rem);
  padding-top: clamp(6rem, 12vw, 11rem);
}

.north-star > div {
  margin: 0 auto;
  max-width: 92rem;
}

.north-star h2 {
  font-size: clamp(2.8rem, 5.8vw, 6.5rem);
  line-height: 0.97;
  margin: 0;
}

.north-star p {
  color: oklch(78% 0.022 286);
  font-size: 1.05rem;
  line-height: 1.7;
  margin: clamp(2.5rem, 5vw, 4.5rem) 0 2rem;
  max-width: 62ch;
}

.source-link {
  color: var(--violet-soft);
  font-weight: 750;
  transition: color 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

footer {
  align-items: center;
  background: var(--paper);
  display: grid;
  gap: 1rem;
  grid-template-columns: 0.25fr 1fr auto;
  padding-bottom: 2rem;
  padding-top: 2rem;
}

footer p {
  color: var(--muted);
  font-size: 0.78rem;
  margin: 0;
}

footer > div {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  font-size: 0.76rem;
  font-weight: 700;
  gap: 1.5rem;
}

@keyframes enter {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 920px) {
  .hero {
    min-height: auto;
  }

  .hero-grid,
  .case-heading,
  .case-action,
  .section-heading,
  .north-star {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    align-items: start;
  }

  .hero-copy {
    position: relative;
    z-index: 1;
  }

  .agent-proof {
    max-width: 42rem;
  }

  .case-intro {
    max-width: 42rem;
  }

  .decision-path li {
    grid-template-columns: minmax(8rem, 0.45fr) minmax(0, 1fr);
  }

  .path-detail {
    grid-column: 2;
  }

  .section-heading > p:last-child {
    max-width: 62ch;
  }

  .layers li {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  }

  .layer-territory {
    grid-column: 2;
  }
}

@media (max-width: 640px) {
  .site-header nav > a:nth-child(3),
  .site-header nav > a:nth-child(4) {
    display: none;
  }

  .project-name {
    font-size: clamp(2.25rem, 10vw, 3.4rem);
  }

  .hero-thesis {
    font-size: clamp(2.15rem, 8.7vw, 3rem);
  }

  .action {
    width: 100%;
  }

  .layers li {
    grid-template-columns: minmax(0, 1fr);
  }

  .decision-path li {
    grid-template-columns: minmax(0, 1fr);
  }

  .path-kind,
  .decision-path strong,
  .path-detail {
    grid-column: 1;
  }

  .layers p,
  .layer-territory {
    grid-column: 1;
  }

  .work-list a {
    grid-template-columns: minmax(0, 1fr) 1.5rem;
  }

  .work-type {
    display: none;
  }

  footer {
    align-items: start;
    grid-template-columns: 1fr;
  }
}

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

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