:root {
  --bg: #0b0f14;
  --bg-elev: #121821;
  --bg-card: #161d28;
  --text: #e8eef7;
  --muted: #9aabc0;
  --accent: #3dffa8;
  --accent-2: #6ea8ff;
  --danger: #ff7b72;
  --border: #243041;
  --radius: 14px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "Cascadia Code", Consolas, monospace;
  --max: 1080px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, #1a2740 0%, transparent 50%),
    radial-gradient(900px 500px at 100% 0%, #0f2a22 0%, transparent 45%), var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
}

a {
  color: var(--accent-2);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent);
}

.wrap {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #04120c;
  padding: 0.5rem 1rem;
  z-index: 100;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(11, 15, 20, 0.85);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  flex-wrap: wrap;
}

.logo {
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
  text-decoration: none;
  font-size: 1.05rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.1rem;
  align-items: center;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav a:hover {
  color: var(--text);
}

.nav-cta {
  background: linear-gradient(135deg, var(--accent), #2bd48a);
  color: #04120c !important;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-weight: 700;
}

main.wrap {
  padding: 1.75rem 0 4rem;
}

.hero {
  padding: 2rem 0 1rem;
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0.4rem 0 1rem;
}

.lead {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 62ch;
}

.muted {
  color: var(--muted);
}

.section {
  margin: 2.5rem 0;
}

.section h2 {
  font-size: 1.45rem;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

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

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.callout {
  background: linear-gradient(180deg, #14201c, var(--bg-card));
  border: 1px solid #1f4a3a;
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow);
}

.callout ul {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
}

.callout li {
  margin: 0.35rem 0;
}

.code {
  background: #0a1018;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: #c8f7df;
}

.btn {
  display: inline-block;
  padding: 0.65rem 1.1rem;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  margin: 0.25rem 0.35rem 0.25rem 0;
}

.btn-primary {
  background: var(--accent);
  color: #04120c;
}

.btn-primary:hover {
  filter: brightness(1.05);
  color: #04120c;
}

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.9rem;
}

.image-card {
  margin: 0;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.image-card img,
.img-placeholder {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: #1a2433;
}

.img-placeholder {
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.9rem;
  text-transform: capitalize;
}

.image-card figcaption {
  padding: 0.55rem 0.7rem 0.75rem;
  font-size: 0.82rem;
  color: var(--muted);
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  margin-bottom: 0.6rem;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
}

.faq-item p {
  color: var(--muted);
  margin: 0.6rem 0 0.2rem;
}

.breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0;
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 0.35rem;
  opacity: 0.5;
}

.link-list {
  columns: 2;
  gap: 1.5rem;
  padding-left: 1.1rem;
}

@media (max-width: 640px) {
  .link-list {
    columns: 1;
  }
}

.model-index {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.75rem;
}

.model-index a {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  text-decoration: none;
  color: var(--text);
}

.model-index a:hover {
  border-color: var(--accent);
}

.model-index .provider {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
  margin-top: 0.25rem;
}

.subnav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0 0;
}

.chip {
  display: inline-block;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
}

.chip:hover,
.chip.is-active {
  border-color: var(--accent);
  color: var(--text);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0 2.5rem;
  background: #090d12;
}

.footer-inner p {
  max-width: 70ch;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  list-style: none;
  padding: 0;
}

.version-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.version-table th,
.version-table td {
  border: 1px solid var(--border);
  padding: 0.55rem 0.7rem;
  text-align: left;
}

.version-table th {
  background: var(--bg-elev);
}

.prose p {
  max-width: 70ch;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin: 1.25rem 0;
}

.stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.9rem;
}

.stat strong {
  display: block;
  font-size: 1.2rem;
  color: var(--accent);
}