:root {
  color-scheme: light dark;
  --bg: #f8fafc;
  --panel: #ffffff;
  --text: #172033;
  --muted: #607086;
  --border: #d7dee8;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --code-bg: #111827;
  --code-text: #e5e7eb;
  --nav: #0f172a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

.layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  background: var(--nav);
  color: white;
  padding: 28px 22px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}

.sidebar-header {
  align-items: center;
  display: flex;
  gap: 12px;
  justify-content: space-between;
  margin-bottom: 4px;
}

.brand {
  color: white;
  display: block;
  font-size: 1.35rem;
  font-weight: 750;
}

.menu-toggle {
  background: transparent;
  border: 0;
  color: white;
  cursor: pointer;
  display: none;
  padding: 6px;
}

.menu-toggle span {
  background: white;
  border-radius: 1px;
  display: block;
  height: 2px;
  margin: 4px 0;
  transition: transform 0.2s, opacity 0.2s;
  width: 22px;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.tagline {
  color: #b6c3d6;
  font-size: 0.92rem;
  margin: 0 0 24px;
}

.nav {
  display: grid;
  gap: 6px;
}

.nav a {
  border-radius: 6px;
  color: #dbe5f5;
  padding: 8px 10px;
}

.nav a[aria-current="page"],
.nav a:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  text-decoration: none;
}

.nav-github {
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: inline-flex;
  gap: 8px;
  margin-top: 14px;
  padding-top: 18px;
}

.nav-github svg {
  fill: currentColor;
  flex-shrink: 0;
  height: 18px;
  width: 18px;
}

.content {
  max-width: 980px;
  padding: 48px 56px 80px;
  width: 100%;
}

.hero {
  border-bottom: 1px solid var(--border);
  margin-bottom: 34px;
  padding-bottom: 30px;
}

h1 {
  font-size: clamp(2.1rem, 4vw, 3.5rem);
  letter-spacing: 0;
  line-height: 1.05;
  margin: 0 0 16px;
}

h2 {
  border-top: 1px solid var(--border);
  font-size: 1.55rem;
  margin: 36px 0 14px;
  padding-top: 28px;
}

h3 {
  font-size: 1.15rem;
  margin: 26px 0 8px;
}

.heading-anchor {
  color: var(--muted);
  font-weight: 500;
  margin-left: 0.35em;
  opacity: 0;
  text-decoration: none;
}

h1:hover .heading-anchor,
h2:hover .heading-anchor,
h3:hover .heading-anchor,
.heading-anchor:focus {
  opacity: 1;
}

.heading-anchor:hover {
  color: var(--accent-strong);
  text-decoration: none;
}

p {
  margin: 0 0 14px;
}

.lead {
  color: var(--muted);
  font-size: 1.13rem;
  max-width: 760px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.button {
  align-items: center;
  background: var(--accent);
  border-radius: 6px;
  color: white;
  display: inline-flex;
  font-weight: 650;
  min-height: 40px;
  padding: 8px 14px;
}

.button.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

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

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  margin: 20px 0 10px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
}

.card h3 {
  margin-top: 0;
}

code {
  background: rgba(15, 23, 42, 0.08);
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
  padding: 0.12em 0.3em;
}

pre {
  background: var(--code-bg);
  border-radius: 8px;
  color: var(--code-text);
  line-height: 1.5;
  margin: 16px 0 22px;
  overflow: auto;
  padding: 18px;
  position: relative;
}

pre code {
  background: transparent;
  color: inherit;
  display: block;
  padding: 0;
}

pre.code-block {
  padding-top: 52px;
}

pre.code-block[data-language]::before {
  color: #94a3b8;
  content: attr(data-language);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.76rem;
  font-weight: 700;
  left: 18px;
  letter-spacing: 0.08em;
  position: absolute;
  text-transform: uppercase;
  top: 16px;
}

.code-copy {
  background: rgba(148, 163, 184, 0.18);
  border: 1px solid rgba(148, 163, 184, 0.3);
  border-radius: 6px;
  color: var(--code-text);
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 650;
  padding: 6px 10px;
  position: absolute;
  right: 18px;
  top: 14px;
}

.code-copy:hover {
  background: rgba(148, 163, 184, 0.28);
}

.code-copy.copied {
  border-color: rgba(45, 212, 191, 0.5);
  color: #99f6e4;
}

.token.comment {
  color: #6b7280;
}

.token.keyword {
  color: #f472b6;
}

.token.string {
  color: #fbbf24;
}

.token.number {
  color: #38bdf8;
}

.token.builtin {
  color: #86efac;
}

table {
  border-collapse: collapse;
  margin: 16px 0 24px;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 10px 8px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 0.86rem;
  text-transform: uppercase;
}

img {
  border: 1px solid var(--border);
  border-radius: 8px;
  height: auto;
  max-width: 100%;
}

.callout {
  background: #e6fffb;
  border: 1px solid #99f6e4;
  border-radius: 8px;
  color: #134e4a;
  margin: 18px 0;
  padding: 14px 16px;
}

.footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  margin-top: 44px;
  padding-top: 20px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10141f;
    --panel: #151b29;
    --text: #eef4ff;
    --muted: #a8b4c8;
    --border: #2a3446;
    --accent: #14b8a6;
    --accent-strong: #5eead4;
    --nav: #080d17;
  }

  code {
    background: rgba(255, 255, 255, 0.1);
  }

  .callout {
    background: #062f2d;
    border-color: #0f766e;
    color: #ccfbf1;
  }

  .code-copy {
    background: rgba(148, 163, 184, 0.12);
    border-color: rgba(148, 163, 184, 0.24);
  }

  .code-copy:hover {
    background: rgba(148, 163, 184, 0.22);
  }

  .token.comment {
    color: #94a3b8;
  }
}

@media (max-width: 840px) {
  .layout {
    display: block;
  }

  .sidebar {
    height: auto;
    padding: 14px 18px;
    position: sticky;
    top: 0;
    z-index: 10;
  }

  .menu-toggle {
    display: block;
  }

  .tagline {
    display: none;
  }

  .nav {
    display: none;
    margin-top: 14px;
  }

  .sidebar.nav-open .nav {
    display: grid;
  }

  .nav-github {
    margin-top: 6px;
  }

  .content {
    padding: 34px 22px 60px;
  }
}