:root {
  --bg: #ffffff;
  --bg-accent: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --text: #0f172a;
  --muted: #475569;
  --border: rgba(15, 23, 42, 0.12);
  --accent: #0284c7;
  --accent-2: #6d28d9;
  --accent-3: #a0a0f0; 
  --shadow: 0 10px 30px rgba(2, 8, 20, 0.08);
  --radius: 14px;
  --max: 72rem;
  --sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    "Apple Color Emoji", "Segoe UI Emoji";
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Fluid type scale. */
  --step--1: clamp(0.95rem, 0.92rem + 0.15vw, 1.02rem);
  --step-0: clamp(1.08rem, 1.02rem + 0.28vw, 1.22rem);
  --step-1: clamp(1.32rem, 1.18rem + 0.65vw, 1.62rem);
  --step-2: clamp(1.62rem, 1.38rem + 1.05vw, 2.15rem);
  --step-3: clamp(2.05rem, 1.72rem + 1.55vw, 2.85rem);
  --step-4: clamp(2.6rem, 2.1rem + 2.3vw, 3.55rem);

  /* Fluid spacing scale. */
  --space-1: clamp(0.75rem, 0.68rem + 0.35vw, 1rem);
  --space-2: clamp(1.05rem, 0.92rem + 0.7vw, 1.6rem);
  --space-3: clamp(1.6rem, 1.25rem + 1.2vw, 2.4rem);
  --space-4: clamp(2.2rem, 1.8rem + 1.8vw, 3.3rem);
  --space-5: clamp(3rem, 2.3rem + 2.6vw, 4.8rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f14;
    --bg-accent: #0f1622;
    --surface: #0f1622;
    --surface-2: #101a29;
    --text: #e6edf3;
    --muted: #a1b3c5;
    --border: rgba(230, 237, 243, 0.14);
    --shadow: 0 14px 45px rgba(0, 0, 0, 0.35);
    --accent: #38bdf8;
    --accent-2: #a78bfa;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.7;
  color: var(--text);
  background:
    radial-gradient(900px 520px at 12% -12%, color-mix(in oklab, var(--accent) 20%, transparent), transparent 60%),
    radial-gradient(860px 500px at 92% 0%, color-mix(in oklab, var(--accent-2) 16%, transparent), transparent 62%),
    var(--bg);
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-thickness: 2px;
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding-left: 1.2rem;
}

li {
  margin: 0.35rem 0;
}

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

pre {
  margin: 0;
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface-2) 78%, transparent);
  padding: var(--space-1);
}

pre code {
  font-size: var(--step--1);
}

.container {
  width: min(var(--max), calc(100% - (2 * var(--space-2))));
  margin: 0 auto;
}

.flow > * + * {
  margin-top: var(--flow-space, 1.05em);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
}

.skip-link:focus {
  left: var(--space-2);
  top: var(--space-2);
  padding: 0.6rem 0.8rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  z-index: 30;
}

/* Header + nav */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--border);
  background: color-mix(in oklab, var(--bg) 74%, transparent);
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: 0.9rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  min-width: 11rem;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, color-mix(in oklab, var(--accent) 84%, transparent),
    color-mix(in oklab, var(--accent-2) 84%, transparent));
  color: color-mix(in oklab, var(--bg) 92%, #000);
  font-family: var(--mono);
  font-weight: 800;
  letter-spacing: 0.06em;
  font-size: 0.85rem;
}

.brand-name {
  display: grid;
  gap: 0.1rem;
}

.brand-name strong {
  font-size: 1rem;
  line-height: 1.1;
}

.brand-name span {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.1;
}

.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0;
  margin: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 650;
  color: var(--muted);
  transition: background 140ms ease, color 140ms ease, border-color 140ms ease;
}

.nav-link:hover {
  color: var(--text);
  background: color-mix(in oklab, var(--surface) 70%, transparent);
}

.nav-link.cta {
  color: var(--text);
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface-2) 70%, transparent);
}

.nav-link.cta:hover {
  border-color: color-mix(in oklab, var(--accent) 45%, var(--border));
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface) 70%, transparent);
  border-radius: 12px;
  padding: 0.55rem 0.65rem;
  cursor: pointer;
}

.nav-toggle:hover {
  border-color: color-mix(in oklab, var(--accent) 45%, var(--border));
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
}

/* Main layout */

main {
  padding: 0;
}

.page {
  max-width: 62rem;
  margin: 0 auto;
  padding: var(--space-4) 0 var(--space-5);
}

.page > * + * {
  margin-top: 1.15em;
}

.page h1 {
  font-size: var(--step-3);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-top: 0;
}

.page h2 {
  margin-top: var(--space-4);
}

.page p,
.page li {
  color: var(--muted);
}

.page strong {
  color: var(--text);
}

.hero {
  padding: var(--space-5) 0 var(--space-4);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
  gap: var(--space-4);
  align-items: center;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface) 72%, transparent);
  color: var(--muted);
  font-family: var(--mono);
  font-size: var(--step--1);
  white-space: nowrap;
}


.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface) 70%, transparent);
  color: var(--muted);
  font-family: var(--mono);
  font-size: var(--step--1);
  width: fit-content;
}

.hero h1 {
  font-size: var(--step-4);
  line-height: 1.06;
  letter-spacing: -0.03em;
  margin: 0;
}

.lede {
  font-size: var(--step-1);
  color: var(--muted);
  max-width: 44rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface) 72%, transparent);
  text-decoration: none;
  font-weight: 750;
  transition: transform 80ms ease, border-color 140ms ease;
}

.button:hover {
  border-color: color-mix(in oklab, var(--accent) 48%, var(--border));
}

.button.primary {
  background: linear-gradient(135deg, color-mix(in oklab, var(--accent) 22%, transparent),
    color-mix(in oklab, var(--accent-2) 16%, transparent));
  border-color: color-mix(in oklab, var(--accent) 35%, var(--border));
}

.button:active {
  transform: translateY(1px);
}

.install {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.install code {
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface-2) 76%, transparent);
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  font-size: var(--step--1);
}

.install button {
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface) 70%, transparent);
  padding: 0.55rem 0.75rem;
  border-radius: 999px;
  font-weight: 750;
  cursor: pointer;
}

.install button:hover {
  border-color: color-mix(in oklab, var(--accent) 48%, var(--border));
}

.install button.copy {
  color: var(--accent-3);
}

.hero-media {
  justify-self: center;
  width: min(520px, 100%);
  grid-column: 1 / 2;
}

.frame {
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 6px);
  background: color-mix(in oklab, var(--surface-2) 80%, transparent);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.frame img {
  width: 100%;
}

.frame figcaption {
  padding: var(--space-2);
  font-weight: 800;
  line-height: 1.35;
  border-top: 1px solid var(--border);
}

.small {
  color: var(--muted);
  font-size: var(--step--1);
}

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

.section {
  padding: var(--space-4) 0;
}

.section.alt {
  background: color-mix(in oklab, var(--bg-accent) 92%, transparent);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

h2 {
  font-size: var(--step-2);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0;
}

h3 {
  font-size: var(--step-1);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0;
}

.prose {
  --flow-space: 1.1em;
}

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

.prose strong {
  color: var(--text);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-2);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-2);
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in oklab, var(--surface) 78%, transparent);
  padding: var(--space-2);
  box-shadow: 0 1px 0 rgba(2, 8, 20, 0.03);
}

.card p {
  color: var(--muted);
  margin-top: 0.55rem;
}

.callout {
  border-left: 3px solid color-mix(in oklab, var(--accent) 70%, var(--border));
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface-2) 80%, transparent);
  padding: var(--space-2);
}

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

.video {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.9fr);
  gap: var(--space-3);
  align-items: start;
}

.video-embed {
  position: relative;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 6px);
  overflow: hidden;
  background: color-mix(in oklab, var(--surface-2) 86%, transparent);
}

.video-embed::before {
  content: "";
  display: block;
  padding-top: 56.25%;
}

.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

blockquote {
  margin: 0;
  padding: var(--space-2);
  border-left: 3px solid color-mix(in oklab, var(--accent-2) 70%, var(--border));
  border-radius: var(--radius);
  background: color-mix(in oklab, var(--surface-2) 80%, transparent);
  color: var(--muted);
}

blockquote footer {
  margin-top: 0.6rem;
  color: var(--muted);
  font-weight: 700;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: var(--space-4) 0;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface) 80%, transparent);
}

table th,
table td {
  padding: 0.75rem 0.8rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

table th {
  color: var(--text);
  font-weight: 800;
  font-size: var(--step--1);
}

table td {
  color: var(--muted);
}

/* Heading permalinks (hover-reveal). */
.heading-anchor {
  opacity: 0;
  margin-left: 0.55rem;
  text-decoration: none;
  color: var(--muted);
  font-weight: 900;
  transition: opacity 140ms ease, color 140ms ease;
}

h2:hover .heading-anchor,
h3:hover .heading-anchor,
h4:hover .heading-anchor,
.heading-anchor:focus {
  opacity: 1;
  color: var(--text);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-3) 0;
  color: var(--muted);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  justify-content: space-between;
}

.footer-title {
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--text);
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 650;
}

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

/* Responsive */
@media (max-width: 920px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 820px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-nav {
    position: absolute;
    right: var(--space-2);
    top: calc(100% + 0.5rem);
    display: none;
    width: min(20rem, calc(100vw - (2 * var(--space-2))));
    padding: 0.6rem;
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) + 6px);
    background: color-mix(in oklab, var(--surface) 88%, transparent);
    box-shadow: var(--shadow);
  }

  .site-header.is-open .site-nav {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
  }

  .nav-link {
    border-radius: 12px;
    padding: 0.65rem 0.8rem;
  }
}