:root {
  --ink: #17251f;
  --ink-soft: #51615a;
  --paper: #f7f4ec;
  --white: #fffdf8;
  --sage: #dfe8dc;
  --sage-deep: #b7cbb8;
  --line: #cbd3c9;
  --accent: #e86538;
  --accent-dark: #bd4020;
  --code: #101b17;
  --max: 1200px;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: Iowan Old Style, Baskerville, "Times New Roman", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color 0.18s ease, text-decoration-color 0.18s ease;
}

code,
pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

code {
  font-size: 0.88em;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 1rem;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-150%);
}

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

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 72px;
  padding: 0 4vw;
  border-bottom: 1px solid rgba(23, 37, 31, 0.14);
  background: rgba(247, 244, 236, 0.92);
  backdrop-filter: blur(14px);
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 750;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  position: relative;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
}

.brand-mark::before,
.brand-mark::after {
  position: absolute;
  content: "";
  border: 1px solid var(--ink);
  border-radius: 50%;
}

.brand-mark::before {
  width: 15px;
  height: 15px;
}

.brand-mark::after {
  width: 8px;
  height: 8px;
}

.site-header nav {
  display: flex;
  gap: 2rem;
}

.site-header nav a,
.github-link {
  font-size: 0.82rem;
  font-weight: 650;
  text-decoration: none;
}

.site-header nav a:hover,
.github-link:hover,
footer a:hover {
  color: var(--accent-dark);
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(340px, 0.75fr) minmax(500px, 1.25fr);
  min-height: calc(100vh - 72px);
  max-height: 920px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  padding: clamp(4rem, 8vw, 8rem) clamp(2rem, 6vw, 7rem);
}

.eyebrow,
.kicker {
  margin: 0 0 1.5rem;
  color: var(--ink-soft);
  font-size: 0.73rem;
  font-weight: 750;
}

/* Small section label — uppercase reads as an intentional chip here. */
.kicker {
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

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

.eyebrow-badge {
  padding: 0.25rem 0.6rem;
  color: var(--white);
  border-radius: 999px;
  background: var(--accent);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.eyebrow-source {
  white-space: nowrap;
}

.eyebrow-source strong {
  color: var(--ink);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

h1 {
  max-width: 720px;
  margin-bottom: 2rem;
  font-size: clamp(4rem, 7vw, 7.4rem);
}

h1 em {
  color: var(--accent);
  font-weight: 400;
}

h2 {
  margin-bottom: 1.4rem;
  font-size: clamp(2.8rem, 5vw, 5rem);
}

h3 {
  line-height: 1.25;
}

.hero-intro {
  max-width: 600px;
  margin-bottom: 2.25rem;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 1.25vw, 1.25rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.3rem;
  border: 1px solid var(--ink);
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
  transition: color 0.22s ease, background-color 0.22s ease, border-color 0.22s ease,
    transform 0.22s ease;
}

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

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

.button-primary:hover {
  border-color: var(--accent);
  background: var(--accent);
}

.button-secondary:hover {
  background: var(--sage);
}

.hero-map {
  position: relative;
  display: flex;
  min-height: 570px;
  align-items: center;
  overflow: hidden;
  border-left: 1px solid var(--line);
  background: var(--sage);
}

.hero-map::before {
  position: absolute;
  z-index: 1;
  inset: 0;
  background-image: linear-gradient(rgba(23, 37, 31, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 37, 31, 0.055) 1px, transparent 1px);
  background-size: 8.333% 12.5%;
  content: "";
}

.hero-map img {
  position: relative;
  z-index: 2;
  width: 120%;
  height: auto;
  margin-left: -10%;
  mix-blend-mode: multiply;
  filter: contrast(1.25);
}

.intro-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 2rem;
}

.intro-strip div {
  display: flex;
  flex-direction: column;
  padding: 0 2rem;
  border-right: 1px solid var(--line);
}

.intro-strip div:first-child {
  padding-left: 0;
}

.intro-strip div:last-child {
  padding-right: 0;
  border-right: 0;
}

.intro-strip strong {
  margin-bottom: 0.15rem;
  font-family: var(--serif);
  font-size: 1.18rem;
}

.intro-strip span {
  color: var(--ink-soft);
  font-size: 0.8rem;
}

.section {
  display: grid;
  grid-template-columns: minmax(260px, 0.78fr) minmax(480px, 1.22fr);
  gap: clamp(3rem, 9vw, 9rem);
  padding: clamp(5rem, 9vw, 9rem) max(4vw, calc((100vw - var(--max)) / 2));
  border-top: 1px solid var(--line);
}

.tinted {
  background: var(--sage);
}

.section-heading {
  max-width: 520px;
}

.section-heading > p:last-child,
.view-card > p,
.model-grid p,
.provenance-copy {
  color: var(--ink-soft);
}

.wide-heading {
  grid-column: 1 / -1;
  max-width: 760px;
}

.code-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-self: center;
  min-width: 0;
}

.code-card {
  overflow: hidden;
  color: #dbe8df;
  border: 1px solid #293c33;
  background: var(--code);
  box-shadow: 0 20px 60px rgba(23, 37, 31, 0.12);
}

.code-label {
  display: flex;
  justify-content: space-between;
  padding: 0.7rem 1rem;
  color: #93a49b;
  border-bottom: 1px solid #293c33;
  font-size: 0.65rem;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.code-card pre {
  margin: 0;
  padding: 1.35rem;
  overflow-x: auto;
  font-size: clamp(0.72rem, 1.1vw, 0.9rem);
  line-height: 1.8;
}

.syntax-keyword {
  color: #eca96d;
}

.syntax-string {
  color: #a9d39e;
}

.view-grid {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.view-card {
  padding: clamp(1.8rem, 4vw, 3.2rem);
  border: 1px solid rgba(23, 37, 31, 0.24);
  background: rgba(255, 253, 248, 0.58);
}

.view-card.featured {
  color: var(--white);
  border-color: var(--ink);
  background: var(--ink);
}

.view-card.featured > p,
.view-card.featured .card-topline,
.view-card.featured .policy-list span {
  color: #bdc9c1;
}

.view-card h3 {
  margin: 2.5rem 0 0.9rem;
  font-family: var(--serif);
  font-size: 2.2rem;
  font-weight: 500;
}

.card-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--ink-soft);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
}

.pill {
  padding: 0.22rem 0.55rem;
  color: var(--ink);
  border-radius: 999px;
  background: #ef9c76;
  font-family: var(--sans);
  font-size: 0.64rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pill.quiet {
  background: var(--sage-deep);
}

.policy-list {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.policy-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0;
  border-top: 1px solid #42534b;
  font-size: 0.82rem;
}

.policy-list strong {
  text-align: right;
}

.compact-code {
  margin: 2rem 0;
  padding: 1.25rem;
  overflow-x: auto;
  color: #dbe8df;
  background: var(--code);
  font-size: 0.76rem;
  line-height: 1.7;
}

.card-note {
  margin-bottom: 0;
  font-size: 0.84rem;
}

.coverage-table-wrap {
  align-self: center;
  min-width: 0;
}

.coverage-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.coverage-table th {
  padding: 0.75rem;
  color: var(--ink-soft);
  border-bottom: 2px solid var(--ink);
  font-size: 0.67rem;
  letter-spacing: 0.01em;
  text-align: left;
}

.coverage-table td {
  padding: 1.2rem 0.75rem;
  border-bottom: 1px solid var(--line);
}

.coverage-table td:first-child {
  display: flex;
  flex-direction: column;
}

.coverage-table td:first-child span {
  color: var(--ink-soft);
  font-size: 0.72rem;
}

/* Reserve a gutter on the count columns so every number lines up,
   whether or not it carries a status dot. */
.coverage-table td:nth-child(2),
.coverage-table td:nth-child(3) {
  padding-left: 1.9rem;
}

.complete {
  position: relative;
}

.complete::before {
  position: absolute;
  top: 50%;
  left: -1.15rem;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #3d8f64;
  transform: translateY(-50%);
  content: "";
}

.table-note {
  margin: 1rem 0 0;
  color: var(--ink-soft);
  font-size: 0.74rem;
}

.files-section {
  background: var(--white);
}

.file-list {
  grid-column: 1 / -1;
  border-top: 2px solid var(--ink);
}

.file-row {
  display: grid;
  grid-template-columns: minmax(250px, 0.9fr) minmax(320px, 1.5fr) auto;
  gap: 2rem;
  align-items: center;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--line);
}

.file-row > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.file-row > a {
  font-size: 0.78rem;
  font-weight: 750;
}

.file-name {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
}

.file-name h3 {
  margin: 0 0 0.1rem;
  overflow-wrap: anywhere;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.83rem;
}

.file-name span:not(.file-icon) {
  color: var(--ink-soft);
  font-size: 0.7rem;
}

.file-icon {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
}

.alternate-row {
  margin: 0 -1.25rem;
  padding-right: 1.25rem;
  padding-left: 1.25rem;
  background: var(--sage);
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  grid-column: 1 / -1;
}

.model-grid article {
  padding-top: 1rem;
  border-top: 1px solid rgba(23, 37, 31, 0.3);
}

.model-grid h3 {
  margin: 2.5rem 0 0.8rem;
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 500;
}

.model-grid p {
  font-size: 0.84rem;
}

.model-number {
  color: var(--accent-dark);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.7rem;
}

.provenance-section {
  display: block;
  background: var(--ink);
}

.provenance-card {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 7rem;
  color: var(--white);
}

.provenance-card .kicker,
.provenance-copy {
  color: #b9c6be;
}

.provenance-copy p {
  max-width: 720px;
}

.text-links {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin-top: 2rem;
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 700;
}

.build-section {
  align-items: center;
}

.light-code {
  box-shadow: none;
}

footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 2rem;
  align-items: center;
  padding: 2.5rem 4vw;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
}

footer p {
  margin: 0;
  color: var(--ink-soft);
  text-align: center;
}

footer > div:last-child {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1.25rem;
}

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

  .site-header nav {
    display: none;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    max-height: none;
  }

  .hero-map {
    min-height: 430px;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .section {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .wide-heading,
  .view-grid,
  .file-list,
  .model-grid {
    grid-column: auto;
  }

  .file-row {
    grid-template-columns: 1fr auto;
  }

  .file-row > p {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .provenance-card {
    gap: 3rem;
  }

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

  footer p {
    display: none;
  }
}

@media (max-width: 680px) {
  .site-header {
    min-height: 62px;
  }

  /* Stack the version badge and source on their own lines. */
  .eyebrow {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .github-link {
    font-size: 0.75rem;
  }

  .hero {
    min-height: auto;
  }

  .hero-copy {
    padding: 4rem 1.25rem;
  }

  h1 {
    overflow-wrap: anywhere;
    font-size: clamp(3.2rem, 15vw, 4.2rem);
  }

  h1 em {
    display: block;
    font-size: 0.92em;
  }

  .hero-map {
    min-height: 310px;
  }

  .hero-map img {
    width: 150%;
    margin-left: -25%;
  }

  .intro-strip,
  .view-grid,
  .model-grid,
  .provenance-card {
    grid-template-columns: 1fr;
  }

  .intro-strip {
    padding: 1.5rem 1.25rem;
  }

  .intro-strip div,
  .intro-strip div:first-child,
  .intro-strip div:last-child {
    padding: 1rem 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .intro-strip div:last-child {
    border-bottom: 0;
  }

  .section {
    padding: 4.5rem 1.25rem;
  }

  .view-card {
    padding: 1.5rem;
  }

  .card-topline {
    align-items: flex-start;
    flex-direction: column;
  }

  .coverage-table-wrap {
    overflow-x: auto;
  }

  .coverage-table {
    min-width: 610px;
  }

  .file-row {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .file-row > p,
  .file-row > a {
    grid-column: auto;
    grid-row: auto;
  }

  .alternate-row {
    margin: 0 -0.75rem;
    padding-right: 0.75rem;
    padding-left: 0.75rem;
  }

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

  footer > div:last-child {
    justify-content: flex-start;
  }
}

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

  a,
  .button {
    transition: none;
  }

  .button:hover {
    transform: none;
  }
}