:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #4b5563;
  --soft: #f8fafc;
  --line: rgba(81, 173, 120, 0.32);
  --accent: rgb(81, 173, 120);
  --accent-dark: rgb(40, 115, 74);
  --accent-soft: rgba(81, 173, 120, 0.12);
  --section-width: 76rem;
  --white: #ffffff;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--white);
  color: var(--ink);
  margin: 0;
}

body::selection {
  background: rgba(81, 173, 120, 0.25);
}

.site-header {
  align-items: center;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  left: 0;
  min-height: 4rem;
  padding: 0 5vw;
  opacity: 0;
  pointer-events: none;
  position: fixed;
  right: 0;
  top: 0;
  transform: translateY(-100%);
  transition: opacity 180ms ease, transform 180ms ease;
  z-index: 10;
  backdrop-filter: blur(18px);
}

.site-header.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.brand,
.site-nav a,
.site-nav summary,
.site-footer a {
  color: var(--ink);
  text-decoration: none;
}

.brand {
  align-items: center;
  display: inline-flex;
  font-weight: 800;
  gap: 0.75rem;
}

.brand-mark {
  display: block;
  height: 3rem;
  width: auto;
}

.site-nav {
  align-items: center;
  display: flex;
  font-size: 0.95rem;
  font-weight: 700;
  gap: 0.8rem;
}

.nav-menu {
  position: relative;
}

.nav-link {
  align-items: center;
  border: 1px solid transparent;
  border-radius: 6px;
  display: inline-flex;
  min-height: 2.4rem;
  padding: 0.45rem 0.65rem;
}

.nav-menu summary {
  align-items: center;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  gap: 0.35rem;
  list-style: none;
  min-height: 2.4rem;
  padding: 0.45rem 0.65rem;
}

.nav-menu summary::-webkit-details-marker {
  display: none;
}

.nav-menu summary::after {
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  content: "";
  margin-top: 0.1rem;
}

.nav-menu[open] summary,
.nav-menu summary:hover,
.site-nav a:hover,
.site-footer a:hover {
  color: var(--accent-dark);
}

.nav-menu[open] summary {
  border-color: var(--line);
}

.nav-menu-panel {
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 32px rgba(17, 24, 39, 0.12);
  display: grid;
  gap: 0.25rem;
  min-width: 11rem;
  padding: 0.45rem;
  position: absolute;
  right: 0;
  top: calc(100% + 0.35rem);
}

.nav-menu-panel a {
  border-radius: 6px;
  padding: 0.55rem 0.65rem;
  white-space: nowrap;
}

.nav-menu-panel a:hover {
  background: var(--accent-soft);
}

.hero {
  align-items: center;
  background: linear-gradient(135deg, #082416 0%, #123825 58%, rgb(81, 173, 120) 140%);
  color: var(--white);
  display: grid;
  isolation: isolate;
  min-height: 74vh;
  overflow: hidden;
  padding: clamp(4rem, 9vw, 8rem) 5vw;
  position: relative;
}

.hero-specimen {
  color: rgba(255, 255, 255, 0.22);
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 1rem;
  inset: 4rem max(5vw, calc((100vw - var(--section-width)) / 2)) auto auto;
  line-height: 1.65;
  max-width: min(46rem, 90vw);
  position: absolute;
  transform: rotate(-2deg);
  z-index: -1;
}

.hero-specimen pre {
  margin: 0;
}

.hero-content {
  margin-left: auto;
  margin-right: auto;
  max-width: var(--section-width);
  width: 100%;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  margin: 0 0 0.7rem;
  text-transform: uppercase;
}

.hero-title-row {
  align-items: center;
  display: flex;
  gap: clamp(1rem, 2vw, 1.6rem);
}

.hero-mark {
  display: block;
  height: clamp(4.4rem, 9vw, 8.5rem);
  width: auto;
}

.hero h1 {
  font-size: 8rem;
  letter-spacing: 0;
  line-height: 0.86;
  margin: 0;
}

.hero-copy {
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.35rem;
  line-height: 1.55;
  margin: 1.4rem 0 0;
  max-width: 48rem;
}

.hero-actions {
  align-items: flex-start;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.hero-actions {
  margin-top: 2rem;
}

.github-star-button {
  align-items: center;
  display: inline-flex;
  min-height: 2.75rem;
}

.github-star-button iframe {
  display: block;
}

.button {
  align-items: center;
  border: 1px solid rgba(17, 24, 39, 0.28);
  border-radius: 6px;
  color: var(--ink);
  display: inline-flex;
  font-weight: 800;
  min-height: 2.75rem;
  padding: 0.65rem 1rem;
  text-decoration: none;
}

.hero .button {
  border-color: rgba(255, 255, 255, 0.46);
  color: var(--white);
}

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

.button-primary,
.hero .button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #082416;
}

.button-primary:hover,
.hero .button-primary:hover {
  background: var(--white);
  border-color: var(--white);
  color: var(--ink);
}

.summary {
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.summary div {
  padding: 1.4rem 5vw;
}

.summary div + div {
  border-left: 1px solid var(--line);
}

.summary-label {
  color: var(--muted);
  display: block;
  font-size: 0.78rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
  text-transform: uppercase;
}

.summary strong {
  font-size: 1.2rem;
}

.section {
  padding: clamp(4rem, 8vw, 7rem) 5vw;
}

.section-muted {
  background: var(--soft);
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
}

.section-heading,
.format-layout,
.library-grid,
.feature-grid {
  margin-left: auto;
  margin-right: auto;
  max-width: var(--section-width);
}

.section-heading {
  width: 100%;
}

.development-callout {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: 8px;
  color: #7c2d12;
  font-weight: 700;
  line-height: 1.5;
  margin: 0 auto 2rem;
  max-width: var(--section-width);
  padding: 0.9rem 1rem;
}

.section h2 {
  font-size: 3.25rem;
  letter-spacing: 0;
  line-height: 1;
  margin: 0;
}

.section-heading p {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin: 1rem 0 0;
  max-width: 48rem;
}

#format .section-heading,
.format-copy {
  margin-left: auto;
  margin-right: auto;
  max-width: var(--section-width);
  text-align: center;
}

#format .section-heading {
  margin-bottom: 0;
}

.format-layout {
  margin-top: 1.5rem;
}

.format-copy p {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin: 0 auto 2rem;
  max-width: 48rem;
}

.code-window {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.9rem;
  line-height: 1.65;
  margin: 0;
  overflow-x: auto;
  padding: 1.2rem;
}

.code-window-small {
  font-size: 0.78rem;
  line-height: 1.55;
  padding: 1rem;
}

.format-flow {
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: 8px;
  display: grid;
  gap: 0;
  margin: 0 auto;
  max-width: var(--section-width);
  overflow: visible;
}

.format-note {
  color: var(--accent-dark);
  font-size: 1.15rem;
  font-weight: 800;
  margin: 1.5rem 0 0;
  text-align: center;
}

.format-step {
  background: transparent;
}

.library-code-grid span {
  color: var(--accent-dark);
  display: block;
  font-size: 0.76rem;
  font-weight: 800;
  margin-bottom: 0.35rem;
  text-transform: uppercase;
}

.format-step .code-window {
  background: transparent;
  border: 0;
  border-radius: 0;
  color: var(--ink);
}

.format-connector {
  align-items: center;
  color: var(--muted);
  display: grid;
  gap: 0.7rem;
  grid-template-columns: 1fr auto 1fr;
  padding: 0.9rem 1rem;
}


.format-connector-copy {
  text-align: center;
}

.format-connector-copy span {
  display: block;
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.format-connector-border {
  margin-bottom: -0.65rem;
  padding: 0 2.1rem;
  position: relative;
  transform: translateY(-50%);
  z-index: 1;
}

.format-connector-border .format-connector-copy {
  background: var(--white);
  padding: 0 0.65rem;
}

.format-connector::before,
.format-connector::after {
  background: var(--accent);
  content: "";
  height: 1px;
}

.library-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
  margin: 2.5rem auto 0;
  max-width: var(--section-width);
}

.library-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: 8px;
  padding: 1.2rem;
}

.library-card,
.library-card-primary {
  border-top: 3px solid var(--accent);
}

.library-card-header {
  align-items: start;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
}

.library-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
}

.library-card-header h3 {
  font-size: 1.25rem;
  letter-spacing: 0;
  margin: 0;
}

.link-button {
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--accent-dark);
  display: inline-flex;
  font-weight: 800;
  min-height: 2.4rem;
  padding: 0.5rem 0.75rem;
  text-decoration: none;
  white-space: nowrap;
}

.link-button:hover {
  border-color: var(--accent-dark);
  color: var(--ink);
}

.link-icon {
  flex: 0 0 auto;
  height: 1rem;
  margin-left: 0.45rem;
  width: 1rem;
}

.library-card p {
  color: var(--muted);
  line-height: 1.6;
  margin: 0.8rem 0 1rem;
}

.install-callout {
  align-items: center;
  background: var(--accent-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin: 0 0 1rem;
  padding: 0.75rem 0.9rem;
}

.install-callout span {
  color: var(--accent-dark);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.install-callout code {
  color: var(--ink);
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.88rem;
  overflow-wrap: anywhere;
}

.library-code-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 2.5rem;
}

.feature-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  border-top: 3px solid var(--accent);
  padding: 1.2rem;
}


.feature-card h3 {
  font-size: 1.1rem;
  letter-spacing: 0;
  margin: 0 0 0.5rem;
}

.feature-card p {
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
}

.section-cta {
  border-top: 1px solid var(--line);
}

.cta-panel {
  align-items: center;
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: 8px;
  display: flex;
  gap: 2rem;
  justify-content: space-between;
  margin: 0 auto;
  max-width: var(--section-width);
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.cta-panel h2 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  letter-spacing: 0;
  line-height: 1;
  margin: 0;
}

.cta-panel p {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.65;
  margin: 0.9rem 0 0;
  max-width: 42rem;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  justify-content: flex-end;
}


.site-footer {
  align-items: start;
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 1fr) auto;
  padding: 2rem 5vw;
}

.footer-brand p {
  line-height: 1.6;
  margin: 0.8rem 0 0;
  max-width: 24rem;
}

.footer-links {
  align-items: start;
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(2, minmax(8rem, 1fr));
  justify-items: start;
  justify-self: start;
  text-align: left;
}

.footer-link-group {
  display: grid;
  gap: 0.45rem;
  justify-items: start;
}

.footer-link-group span {
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

@media (max-width: 760px) {
  .site-header {
    min-height: 3.5rem;
    padding: 0 4vw;
  }

  .site-nav {
    gap: 0.25rem;
  }

  .nav-menu summary {
    padding-left: 0.45rem;
    padding-right: 0.45rem;
  }

  .nav-link {
    padding-left: 0.45rem;
    padding-right: 0.45rem;
  }

  .hero {
    min-height: 78vh;
  }

  .hero-specimen {
    font-size: 0.72rem;
    opacity: 0.75;
    right: -9rem;
    top: 5.5rem;
  }

  .hero-title-row {
    gap: 0.8rem;
  }

  .hero-mark {
    height: 4rem;
    width: auto;
  }

  .hero h1 {
    font-size: 4rem;
  }

  .hero-copy {
    font-size: 1.1rem;
  }

  .summary strong {
    font-size: 1rem;
  }

  .section h2 {
    font-size: 2rem;
  }

  .code-window {
    font-size: 0.78rem;
  }

  .summary,
  .library-grid,
  .library-code-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .summary div + div {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .section {
    padding: 3.5rem 5vw;
  }

  .cta-panel {
    align-items: stretch;
    flex-direction: column;
  }

  .cta-actions {
    justify-content: flex-start;
  }

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

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

  .library-card-header,
  .install-callout {
    align-items: stretch;
    flex-direction: column;
  }

  .library-actions {
    justify-content: flex-start;
  }
}

@media (min-width: 1200px) {
  .hero h1 {
    font-size: 10rem;
  }

  .section h2 {
    font-size: 4rem;
  }
}