:root {
  color-scheme: light;
  --ink: #12212f;
  --muted: #607084;
  --line: #dbe3ee;
  --panel: #ffffff;
  --soft: #f5f8fb;
  --teal: #0f766e;
  --blue: #1d4ed8;
  --gold: #f59e0b;
  --rose: #be123c;
  --shadow: 0 20px 60px rgba(18, 33, 47, 0.12);
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
  font-family: var(--font);
  letter-spacing: 0;
}

a {
  color: inherit;
}

.site-header {
  align-items: center;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 24px;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 42px;
  position: sticky;
  top: 0;
  z-index: 5;
}

.brand {
  align-items: center;
  display: inline-flex;
  font-weight: 800;
  gap: 10px;
  text-decoration: none;
}

.brand-mark {
  align-items: center;
  background: var(--teal);
  border-radius: 8px;
  color: #ffffff;
  display: inline-flex;
  height: 34px;
  justify-content: center;
  width: 34px;
}

.top-nav {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.top-nav a,
.button {
  border-radius: 8px;
  font-weight: 750;
  min-height: 40px;
  padding: 10px 14px;
  text-decoration: none;
}

.top-nav a:hover,
.button.secondary:hover {
  background: #eaf1f8;
}

.top-nav .nav-action,
.button.primary {
  background: var(--ink);
  color: #ffffff;
}

.hero {
  align-items: center;
  display: grid;
  gap: 42px;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 520px);
  min-height: 560px;
  padding: 72px 42px 54px;
}

.hero-copy {
  max-width: 740px;
}

.eyebrow,
.label {
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  margin: 0 0 12px;
  text-transform: uppercase;
}

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

h1 {
  font-size: clamp(3rem, 8vw, 6.5rem);
  line-height: 0.95;
  margin-bottom: 24px;
}

.hero-text,
.lead {
  color: var(--muted);
  font-size: 1.18rem;
  line-height: 1.7;
  max-width: 680px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  align-items: center;
  border: 1px solid var(--line);
  display: inline-flex;
  justify-content: center;
}

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

.button.secondary {
  background: #ffffff;
}

.hero-visual {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: block;
  max-width: 100%;
  width: 100%;
}

.status-band {
  background: var(--ink);
  color: #ffffff;
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.status-band div {
  background: rgba(255, 255, 255, 0.04);
  padding: 24px 42px;
}

.status-band .label {
  color: #93e2d7;
  display: block;
  margin-bottom: 8px;
}

.status-band a {
  font-family: var(--mono);
  font-size: 0.98rem;
}

.overview {
  padding: 72px 42px;
}

.section-heading {
  max-width: 780px;
}

.section-heading h2,
.doc-content h1 {
  font-size: clamp(2.4rem, 5vw, 4.6rem);
  line-height: 1;
  margin-bottom: 20px;
}

.feature-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 34px;
}

.feature-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 230px;
  padding: 26px;
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.feature-card p,
.doc-content p,
.doc-content li {
  color: var(--muted);
  line-height: 1.7;
}

.feature-number {
  color: var(--rose);
  display: block;
  font-weight: 850;
  margin-bottom: 30px;
}

.doc-layout {
  display: grid;
  gap: 38px;
  grid-template-columns: 230px minmax(0, 900px);
  padding: 52px 42px 82px;
}

.doc-toc {
  align-self: start;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 4px;
  padding: 12px;
  position: sticky;
  top: 96px;
}

.doc-toc a {
  border-radius: 6px;
  color: var(--muted);
  font-weight: 750;
  padding: 10px 12px;
  text-decoration: none;
}

.doc-toc a:hover {
  background: #edf4f8;
  color: var(--ink);
}

.doc-content {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 42px;
}

.doc-content section {
  border-top: 1px solid var(--line);
  margin-top: 34px;
  padding-top: 34px;
}

.doc-content h2 {
  font-size: 1.8rem;
  margin-bottom: 14px;
}

pre {
  background: #12212f;
  border-radius: 8px;
  color: #f8fafc;
  overflow-x: auto;
  padding: 18px;
}

code {
  font-family: var(--mono);
  font-size: 0.95em;
}

.endpoint-list {
  display: grid;
  gap: 12px;
}

.endpoint-list div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.endpoint-list span {
  background: #dff8f3;
  border-radius: 6px;
  color: var(--teal);
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 850;
  margin-bottom: 10px;
  padding: 5px 8px;
}

.endpoint-list code {
  display: block;
  margin-bottom: 8px;
}

@media (max-width: 900px) {
  .site-header,
  .hero,
  .overview,
  .doc-layout {
    padding-left: 22px;
    padding-right: 22px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .status-band,
  .feature-grid,
  .doc-layout {
    grid-template-columns: 1fr;
  }

  .doc-toc {
    position: static;
  }
}

@media (max-width: 560px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    padding-bottom: 16px;
    padding-top: 16px;
  }

  h1 {
    font-size: 3rem;
  }

  .hero {
    padding-top: 44px;
  }

  .status-band div,
  .doc-content {
    padding: 22px;
  }
}