:root {
  --blue: #006fff;
  --blue-dark: #0056cc;
  --blue-soft: #e8f1ff;
  --canvas: #f5f6f8;
  --surface: #ffffff;
  --border: #e5e7eb;
  --text: #1f2937;
  --muted: #6b7280;
  --header-h: 4rem;
  --sidebar-w: 15.5rem;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--canvas);
  line-height: 1.55;
  min-height: 100vh;
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 1.25rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
  color: inherit;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand img {
  height: 2.5rem;
  width: auto;
  border-radius: 0.25rem;
  background: transparent;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
}

.brand-text strong {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand-text span {
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.45rem 0.7rem;
  border-radius: 0.375rem;
  text-decoration: none;
}

.nav a:hover,
.nav a.active {
  color: var(--blue);
  background: var(--blue-soft);
  text-decoration: none;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 0.375rem;
  padding: 0.4rem 0.65rem;
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
}

.shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  min-height: calc(100vh - var(--header-h));
}

.shell.no-sidebar {
  grid-template-columns: minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: var(--header-h);
  align-self: start;
  height: calc(100vh - var(--header-h));
  overflow: auto;
  padding: 1.25rem 0.75rem 2rem;
  background: #f7f8fa;
  border-right: 1px solid var(--border);
}

.sidebar h2 {
  margin: 0 0.75rem 0.75rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.sidebar a {
  display: block;
  color: var(--text);
  font-size: 0.84rem;
  padding: 0.45rem 0.75rem;
  border-radius: 0.375rem;
  border-left: 3px solid transparent;
  text-decoration: none;
}

.sidebar a:hover {
  background: var(--surface);
  color: var(--blue);
  text-decoration: none;
}

.sidebar a.active {
  background: var(--surface);
  color: var(--blue);
  font-weight: 600;
  border-left-color: var(--blue);
}

.main {
  min-width: 0;
  padding: 1.75rem 1.5rem 3rem;
}

.main-inner {
  max-width: 78rem;
  margin: 0 auto;
}

.hero {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (min-width: 900px) {
  .hero {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }
}

.hero-copy h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero-copy p {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1rem;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
}

.btn-primary:hover {
  background: var(--blue-dark);
  color: #fff;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.hero-visual {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  overflow: hidden;
}

.hero-visual img {
  display: block;
  width: 100%;
}

.card-grid {
  display: grid;
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}

@media (min-width: 700px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1.1rem 1.15rem;
}

.card h3 {
  margin: 0 0 0.4rem;
  font-size: 0.95rem;
  color: var(--blue);
}

.card p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted);
}

.defaults {
  display: grid;
  gap: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1rem 1.15rem;
  margin: 1.25rem 0 2rem;
}

.defaults div {
  display: grid;
  gap: 0.15rem;
}

@media (min-width: 700px) {
  .defaults {
    grid-template-columns: repeat(2, 1fr);
  }
}

.defaults strong {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 600;
}

.defaults span,
.defaults code {
  font-size: 0.9rem;
  color: var(--text);
}

.doc-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1.5rem 1.35rem 2rem;
}

.doc-content > :first-child {
  margin-top: 0;
}

.doc-content h1 {
  font-size: 1.75rem;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}

.doc-content h2 {
  font-size: 1.25rem;
  margin: 2rem 0 0.75rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

.doc-content h2:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.doc-content h3 {
  font-size: 1.05rem;
  margin: 1.5rem 0 0.5rem;
}

.doc-content p,
.doc-content li {
  color: #374151;
  font-size: 0.95rem;
}

.doc-content ul,
.doc-content ol {
  padding-left: 1.25rem;
}

.doc-content blockquote {
  margin: 1rem 0;
  padding: 0.75rem 1rem;
  border-left: 3px solid var(--blue);
  background: var(--blue-soft);
  color: var(--text);
  border-radius: 0 0.375rem 0.375rem 0;
}

.doc-content blockquote p {
  margin: 0;
  color: var(--text);
}

.doc-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin: 1rem 0;
  overflow-x: auto;
  display: block;
}

.doc-content th,
.doc-content td {
  text-align: left;
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.doc-content th {
  color: var(--muted);
  font-weight: 600;
}

.doc-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.84em;
  background: #f3f4f6;
  padding: 0.1em 0.35em;
  border-radius: 0.25rem;
}

.doc-content pre {
  background: #0d1117;
  color: #e6edf3;
  padding: 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  font-size: 0.82rem;
}

.doc-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.doc-content img {
  display: block;
  margin: 1rem 0;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: transparent;
}

.doc-content hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

.shot-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

@media (min-width: 800px) {
  .shot-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.shot {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  overflow: hidden;
}

.shot img {
  display: block;
  width: 100%;
  background: transparent;
}

.shot figcaption {
  padding: 0.65rem 0.85rem;
  font-size: 0.8rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 1rem 1.25rem 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
}

.loading {
  color: var(--muted);
  font-size: 0.9rem;
  padding: 2rem 0;
}

.error {
  color: #b91c1c;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 0.5rem;
  padding: 1rem;
}

@media (max-width: 860px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem;
  }

  .nav.open {
    display: flex;
  }

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

  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--border);
    display: none;
  }

  .sidebar.open {
    display: block;
  }
}