:root {
  color-scheme: light;
  --paper: #f2ecdf;
  --paper-deep: #e7decc;
  --ink: #1f1d1b;
  --muted: #6d675e;
  --rust: #b24735;
  --rust-dark: #8d3426;
  --sage: #6f8d73;
  --amber: #d79c48;
  --line: rgba(31, 29, 27, 0.18);
  --shadow: 0 28px 70px rgba(66, 52, 38, 0.14);
  --radius: 1.4rem;
  font-family: Inter, "Avenir Next", Avenir, "Segoe UI", Helvetica, Arial, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(31, 29, 27, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 29, 27, 0.045) 1px, transparent 1px),
    var(--paper);
  background-size: 48px 48px;
  line-height: 1.55;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at 74% 8%, rgba(215, 156, 72, 0.18), transparent 30rem);
  content: "";
  pointer-events: none;
}

::selection {
  color: var(--paper);
  background: var(--rust);
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
}

button,
input {
  font: inherit;
}

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

:focus-visible {
  outline: 3px solid var(--paper);
  outline-offset: 4px;
  box-shadow: 0 0 0 6px var(--ink);
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  min-height: 2.75rem;
  padding: 0.8rem 1rem;
  color: var(--paper);
  background: var(--rust-dark);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  transform: translateY(calc(-100% - 1.5rem));
  transition: transform 160ms ease;
}

.skip-link:focus-visible {
  outline-color: var(--amber);
  box-shadow: 0 0 0 6px var(--ink);
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 80px;
  padding: 0 4vw;
  border-bottom: 1px solid var(--line);
  background: rgba(242, 236, 223, 0.88);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  gap: 0.7rem;
  align-items: center;
  width: fit-content;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.brand img {
  display: block;
}

.brand strong {
  color: var(--rust);
}

.site-header nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2.5rem);
  align-items: center;
}

.site-header nav a,
.source-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-header nav a {
  position: relative;
}

.site-header nav a::after {
  position: absolute;
  right: 0;
  bottom: -0.35rem;
  left: 0;
  height: 2px;
  background: var(--rust);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-header nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.source-link {
  justify-self: end;
}

.section,
.hero,
footer {
  width: min(1240px, calc(100% - 8vw));
  margin-inline: auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(26rem, 0.95fr);
  gap: clamp(2rem, 6vw, 7rem);
  align-items: center;
  min-height: calc(100svh - 80px);
  padding: 6rem 0;
}

.eyebrow {
  display: flex;
  gap: 0.7rem;
  align-items: center;
  margin: 0 0 1.3rem;
  color: var(--rust-dark);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow span {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid currentColor;
  border-radius: 50%;
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 0.95;
  letter-spacing: -0.055em;
}

h1 {
  max-width: 10ch;
  font-size: clamp(4rem, 8.2vw, 8rem);
  font-weight: 780;
}

h1 em {
  color: var(--rust);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
}

.hero-lead {
  max-width: 37rem;
  margin: 2.2rem 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.25rem);
}

.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: 3.3rem;
  padding: 0.85rem 1.35rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-decoration: none;
  text-transform: uppercase;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

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

.button-primary {
  color: var(--paper);
  background: var(--ink);
  box-shadow: 0 12px 30px rgba(31, 29, 27, 0.2);
}

.button-primary:hover {
  box-shadow: 0 16px 38px rgba(31, 29, 27, 0.28);
}

.button-quiet:hover {
  color: var(--paper);
  background: var(--rust);
  border-color: var(--rust);
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.4rem;
  margin: 2.4rem 0 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  list-style: none;
  text-transform: uppercase;
}

.hero-facts li::before {
  margin-right: 0.5rem;
  color: var(--sage);
  content: "●";
}

.hero-art {
  position: relative;
  display: grid;
  min-height: 38rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 2.5rem;
  background: var(--ink);
  box-shadow: var(--shadow);
  isolation: isolate;
  place-items: center;
}

.hero-art::before,
.hero-art::after {
  position: absolute;
  top: 50%;
  left: 50%;
  aspect-ratio: 1;
  border: 1px solid rgba(242, 236, 223, 0.16);
  border-radius: 50%;
  content: "";
  translate: -50% -50%;
}

.hero-art::before {
  width: 66%;
}

.hero-art::after {
  width: 88%;
  border-color: rgba(242, 236, 223, 0.09);
}

.hero-art__grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(242, 236, 223, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 236, 223, 0.045) 1px, transparent 1px);
  background-position: center;
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at center, #000 0 42%, transparent 76%);
}

.dialogue-flow {
  position: relative;
  z-index: 2;
  display: grid;
  width: min(82%, 27rem);
  min-height: 31rem;
  grid-template-rows: minmax(8rem, auto) 1fr auto 1fr minmax(8rem, auto);
  justify-items: center;
  align-items: stretch;
}

.dialogue-card {
  box-sizing: border-box;
  width: 100%;
  min-height: 8rem;
  padding: 1.35rem;
  border: 1px solid rgba(242, 236, 223, 0.16);
  border-radius: 1rem;
  color: var(--paper);
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.24);
}

.dialogue-card span,
.trace-stamp span,
.trace-stamp strong {
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.64rem;
  letter-spacing: 0.12em;
}

.dialogue-card p {
  margin: 0.65rem 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.15rem, 2vw, 1.65rem);
  line-height: 1.25;
}

.dialogue-card-a {
  background: var(--rust);
}

.dialogue-card-b {
  background: #34312d;
}

.trace-stamp {
  z-index: 3;
  display: grid;
  min-width: 12.5rem;
  min-height: 4.6rem;
  padding: 0.75rem 1rem;
  place-content: center;
  gap: 0.35rem;
  border: 1px solid rgba(31, 29, 27, 0.3);
  border-radius: 0.85rem;
  color: var(--ink);
  background: var(--amber);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.24);
  text-align: center;
}

.trace-stamp strong {
  font-size: 0.68rem;
}

.flow-track {
  position: relative;
  width: 1px;
  height: 100%;
  min-height: 2rem;
  background: rgba(242, 236, 223, 0.34);
}

.flow-track::before,
.flow-track::after {
  position: absolute;
  left: 50%;
  width: 7px;
  height: 7px;
  border: 1px solid var(--amber);
  border-radius: 50%;
  background: var(--ink);
  content: "";
  translate: -50% 0;
}

.flow-track::before {
  top: 0;
}

.flow-track::after {
  bottom: 0;
}

.section {
  padding: clamp(5rem, 9vw, 9rem) 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.55fr);
  gap: 1rem 4rem;
  align-items: end;
  margin-bottom: 3rem;
}

.section-heading .eyebrow {
  grid-column: 1 / -1;
}

.section-heading h2,
.safety h2,
.provenance h2 {
  max-width: 15ch;
  font-size: clamp(3rem, 6.5vw, 6rem);
}

.section-heading > p:last-child {
  max-width: 34rem;
  margin: 0;
  color: var(--muted);
}

.lab-shell {
  overflow: hidden;
  border: 1px solid rgba(242, 236, 223, 0.13);
  border-radius: var(--radius);
  color: var(--paper);
  background: var(--ink);
  box-shadow: var(--shadow);
}

.lab-topbar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: center;
  min-height: 4rem;
  padding: 0 1.4rem;
  border-bottom: 1px solid rgba(242, 236, 223, 0.14);
}

.lab-topbar p {
  margin: 0;
  color: rgba(242, 236, 223, 0.64);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.65rem;
  letter-spacing: 0.13em;
}

.window-dots {
  display: flex;
  gap: 0.42rem;
}

.window-dots i {
  width: 0.63rem;
  height: 0.63rem;
  border-radius: 50%;
  background: var(--rust);
}

.window-dots i:nth-child(2) {
  background: var(--amber);
}

.window-dots i:nth-child(3) {
  background: var(--sage);
}

.reset-button {
  justify-self: end;
  min-height: 2.75rem;
  padding: 0.45rem 0;
  border: 0;
  color: rgba(242, 236, 223, 0.75);
  background: transparent;
  cursor: pointer;
  font-size: 0.72rem;
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.lab-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(18rem, 0.55fr);
  min-height: 40rem;
}

.conversation-panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border-right: 1px solid rgba(242, 236, 223, 0.14);
}

.transcript {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 1rem;
  max-height: 31rem;
  padding: 2rem;
  overflow-y: auto;
  scrollbar-color: var(--rust) transparent;
}

.message {
  width: min(78%, 38rem);
  padding: 1.15rem 1.3rem;
  border-radius: 0.95rem;
  color: var(--ink);
  background: var(--paper);
}

.message-user {
  align-self: flex-end;
  color: var(--paper);
  background: var(--rust);
}

.message-safety {
  border: 2px solid var(--amber);
  box-shadow: 0 0 0 4px rgba(215, 156, 72, 0.16);
}

.message span {
  display: block;
  margin-bottom: 0.45rem;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.message p {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.12rem;
}

.composer {
  padding: 1.3rem 1.5rem 0;
  border-top: 1px solid rgba(242, 236, 223, 0.14);
}

.composer label {
  display: block;
  margin-bottom: 0.55rem;
  color: rgba(242, 236, 223, 0.64);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.composer-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  overflow: hidden;
  border: 1px solid rgba(242, 236, 223, 0.22);
  border-radius: 0.8rem;
}

.composer-row:focus-within {
  border-color: var(--amber);
  box-shadow: 0 0 0 2px var(--amber);
}

.composer-row input {
  min-width: 0;
  padding: 1rem 1.1rem;
  border: 0;
  outline: 0;
  color: var(--paper);
  background: transparent;
}

.composer-row input::placeholder {
  color: rgba(242, 236, 223, 0.5);
}

.composer-row button {
  padding: 0 1.25rem;
  border: 0;
  color: var(--paper);
  background: var(--rust);
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.composer-boundary {
  margin: 0.55rem 0 0;
  color: rgba(242, 236, 223, 0.58);
  font-size: 0.65rem;
}

.samples {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem 1.5rem;
}

.samples button {
  min-height: 2.75rem;
  padding: 0.4rem 0.7rem;
  border: 1px solid rgba(242, 236, 223, 0.2);
  border-radius: 999px;
  color: rgba(242, 236, 223, 0.72);
  background: transparent;
  cursor: pointer;
  font-size: 0.68rem;
}

.samples button:hover {
  color: var(--ink);
  background: var(--amber);
  border-color: var(--amber);
}

.inspector {
  padding: 2rem;
  background: #292724;
}

.inspector-heading {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(242, 236, 223, 0.14);
}

.inspector-heading p,
.inspector-heading span {
  margin: 0;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.inspector-heading span {
  padding: 0.3rem 0.5rem;
  color: var(--ink);
  background: var(--amber);
}

.inspector dl {
  margin: 1rem 0;
}

.inspector dl div {
  display: grid;
  grid-template-columns: 6rem minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid rgba(242, 236, 223, 0.1);
}

.inspector dt {
  color: rgba(242, 236, 223, 0.5);
  font-size: 0.7rem;
  text-transform: uppercase;
}

.inspector dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.75rem;
}

.inspector-note {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.8rem;
  margin-top: 2rem;
  padding: 1rem;
  border: 1px solid rgba(215, 156, 72, 0.4);
  color: rgba(242, 236, 223, 0.72);
  background: rgba(215, 156, 72, 0.08);
  font-size: 0.76rem;
}

.inspector-note span {
  color: var(--amber);
}

.inspector-note p {
  margin: 0;
}

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

.method-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.method-grid article {
  min-height: 23rem;
  padding: 1.5rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.method-grid article:nth-child(even) {
  background: rgba(231, 222, 204, 0.45);
}

.method-grid article > span {
  color: var(--rust-dark);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.method-grid h3 {
  margin-top: 8rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.8rem, 2.5vw, 2.7rem);
  font-weight: 400;
}

.method-grid p {
  margin: 1.2rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.safety {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.65fr);
  gap: 4rem;
  align-items: start;
}

.safety-copy {
  padding: 2rem;
  color: var(--paper);
  background: var(--rust);
  box-shadow: 1.3rem 1.3rem 0 var(--ink);
}

.safety-copy p:first-child {
  margin-top: 0;
  font-size: 1.2rem;
}

.safety-copy a {
  display: inline-block;
  margin-top: 1.1rem;
  font-weight: 800;
}

.provenance {
  display: grid;
  grid-template-columns: 0.38fr 1fr;
  gap: 1.2rem 3rem;
  align-items: end;
}

.provenance .eyebrow {
  grid-column: 1 / -1;
}

.provenance h2 {
  grid-column: 1 / -1;
  max-width: 18ch;
}

.provenance > p:last-child {
  grid-column: 2;
  max-width: 43rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: center;
  padding: 2.3rem 0 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
}

footer p {
  margin: 0;
}

footer > a {
  justify-self: end;
  color: var(--ink);
  font-weight: 800;
}

@media (max-width: 960px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-header nav {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 5rem;
  }

  .hero-art {
    min-height: 32rem;
  }

  .section-heading,
  .safety {
    grid-template-columns: 1fr;
  }

  .lab-grid {
    grid-template-columns: 1fr;
  }

  .conversation-panel {
    border-right: 0;
    border-bottom: 1px solid rgba(242, 236, 223, 0.14);
  }

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

  .method-grid article {
    min-height: 20rem;
  }

  .method-grid h3 {
    margin-top: 5rem;
  }
}

@media (max-width: 620px) {
  .site-header {
    min-height: 68px;
    padding: 0 1.1rem;
  }

  .source-link {
    font-size: 0.68rem;
  }

  .section,
  .hero,
  footer {
    width: min(100% - 2.2rem, 1240px);
  }

  .hero {
    min-height: auto;
    padding: 4rem 0;
  }

  h1 {
    max-width: none;
    font-size: clamp(3rem, 14.6vw, 4rem);
    letter-spacing: -0.065em;
  }

  .hero-art {
    min-height: 28rem;
    border-radius: 1.5rem;
  }

  .dialogue-flow {
    width: calc(100% - 2rem);
    min-height: 24rem;
    grid-template-rows: minmax(8.5rem, auto) 1fr auto 1fr minmax(8.5rem, auto);
  }

  .dialogue-card {
    min-height: 8.5rem;
    padding: 1rem;
  }

  .dialogue-card p {
    font-size: 1.05rem;
  }

  .trace-stamp {
    min-width: 10.5rem;
    min-height: 3.9rem;
  }

  .section-heading h2,
  .safety h2,
  .provenance h2 {
    font-size: clamp(2.7rem, 14vw, 4.2rem);
  }

  .lab-topbar {
    grid-template-columns: auto 1fr;
    padding: 0 1rem;
  }

  .lab-topbar p {
    display: none;
  }

  .transcript,
  .inspector {
    padding: 1.1rem;
  }

  .message {
    width: 90%;
  }

  .composer {
    padding: 1rem 1rem 0;
  }

  .samples {
    padding: 0.8rem 1rem 1rem;
  }

  .composer-row button {
    padding-inline: 0.8rem;
  }

  .method-grid {
    grid-template-columns: 1fr;
  }

  .method-grid article {
    min-height: auto;
  }

  .method-grid h3 {
    margin-top: 3.5rem;
  }

  .safety-copy {
    box-shadow: 0.7rem 0.7rem 0 var(--ink);
  }

  .provenance {
    grid-template-columns: 1fr;
  }

  .provenance > p:last-child {
    grid-column: 1;
  }

  footer {
    grid-template-columns: 1fr auto;
  }

  footer p {
    display: none;
  }
}

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

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