*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #fafbfc;
  --text: #1a1a2e;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --code-bg: #f1f5f9;
  --code-text: #0f172a;
  --sidebar-bg: #f8fafc;
  --border: #e2e8f0;
  --muted: #64748b;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  line-height: 1.3;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h1 { font-size: 2.25rem; margin-bottom: 1rem; }
h2 { font-size: 1.75rem; margin-top: 2.5rem; margin-bottom: 0.75rem; }
h3 { font-size: 1.35rem; margin-top: 2rem; margin-bottom: 0.5rem; }
h4 { font-size: 1.1rem; margin-top: 1.5rem; margin-bottom: 0.5rem; }

p { margin-bottom: 1rem; }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

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

strong { font-weight: 600; }
em { font-style: italic; }

code {
  font-family: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;
  font-size: 0.9em;
  background: var(--code-bg);
  color: var(--code-text);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

pre {
  font-family: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;
  font-size: 0.875rem;
  line-height: 1.7;
  background: var(--code-bg);
  color: var(--code-text);
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
}

pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
}

ul, ol { margin-bottom: 1rem; padding-left: 1.5rem; }
li { margin-bottom: 0.35rem; }
li > ul, li > ol { margin-top: 0.35rem; margin-bottom: 0; }

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 56px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.header-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header .logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  font-size: 1.1rem;
}

.site-header .logo:hover { text-decoration: none; }
.site-header .logo svg { width: 28px; height: 28px; }

.site-header nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.site-header nav a {
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.site-header nav a:hover {
  color: var(--accent);
  text-decoration: none;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  color: var(--text);
}

.menu-toggle svg { width: 24px; height: 24px; }

.hero {
  text-align: center;
  padding: 8rem 1.5rem 5rem;
  max-width: 720px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 1.25rem;
}

.hero .subtitle {
  font-size: 1.2rem;
  color: var(--muted);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero .install-line {
  display: inline-block;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 1.25rem;
  font-family: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;
  font-size: 0.9rem;
  color: var(--code-text);
  margin-bottom: 2.5rem;
}

.hero .cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.features {
  max-width: 1140px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  padding: 1.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.feature-card .icon { font-size: 1.75rem; margin-bottom: 0.75rem; }
.feature-card h3 { font-size: 1.1rem; margin-top: 0; margin-bottom: 0.5rem; }
.feature-card p { color: var(--muted); font-size: 0.95rem; margin-bottom: 0; }

.quickstart {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem 5rem;
}

.quickstart h2 {
  text-align: center;
  margin-top: 0;
  margin-bottom: 1.5rem;
}

.not-found {
  max-width: 680px;
  margin: 0 auto;
  padding: 8rem 1.5rem 4rem;
  text-align: center;
}

.not-found h1 { font-size: 3rem; margin-bottom: 0.75rem; }
.not-found p { color: var(--muted); }
.not-found .actions { color: var(--text); }
.not-found .actions a { margin: 0 0.25rem; }

.docs-layout {
  display: flex;
  min-height: calc(100vh - 56px);
  padding-top: 56px;
}

.sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  padding: 1.5rem 0;
  position: sticky;
  top: 56px;
  height: calc(100vh - 56px);
  overflow-y: auto;
}

.sidebar .section-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  padding: 0.5rem 1.25rem;
  margin-top: 1rem;
}

.sidebar .section-title:first-child { margin-top: 0; }

.sidebar a {
  display: block;
  padding: 0.35rem 1.25rem;
  font-size: 0.9rem;
  color: var(--text);
  border-left: 3px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.sidebar a:hover {
  color: var(--accent);
  text-decoration: none;
  background: var(--code-bg);
}

.sidebar a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 500;
}

.content {
  flex: 1;
  max-width: 780px;
  padding: 2.5rem 3rem;
}

.content > h1:first-child { margin-top: 0; }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.875rem;
}

.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--accent); }

.btn {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
  background: var(--accent);
  color: #fff;
}

.btn:hover {
  background: var(--accent-hover);
  color: #fff;
  text-decoration: none;
}

.btn-outline {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 6px;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.btn-outline:hover {
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.15em 0.55em;
  border-radius: 999px;
  background: var(--code-bg);
  color: var(--muted);
  border: 1px solid var(--border);
  vertical-align: middle;
}

.code-block { margin-bottom: 1.5rem; }

.code-block .code-title {
  display: inline-block;
  background: var(--border);
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.3rem 0.9rem;
  border-radius: 8px 8px 0 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.code-block pre { margin-bottom: 0; border-top-left-radius: 0; }
.code-block .code-title + pre { border-top-left-radius: 0; border-top-right-radius: 8px; }

table { width: 100%; border-collapse: collapse; margin-bottom: 1.5rem; font-size: 0.95rem; }
th { text-align: left; font-weight: 600; padding: 0.6rem 0.75rem; border-bottom: 2px solid var(--border); }
td { padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--border); }
tr:nth-child(even) td { background: var(--code-bg); }

.kw { color: #4f46e5; }
.str { color: #16a34a; }
.cm { color: #94a3b8; font-style: italic; }
.fn { color: #7c3aed; }
.num { color: #ea580c; }

@media (max-width: 768px) {
  .site-header nav {
    display: none;
    position: absolute;
    top: 56px; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1rem 1.5rem;
    gap: 0.75rem;
  }
  .site-header nav.open { display: flex; }
  .menu-toggle { display: block; }
  .hero { padding: 6rem 1.25rem 3rem; }
  .hero h1 { font-size: 2rem; }
  .hero .subtitle { font-size: 1.05rem; }
  .features { grid-template-columns: 1fr; padding: 2rem 1.25rem 3rem; }
  .sidebar {
    display: none;
    position: fixed;
    top: 56px; left: 0; bottom: 0;
    z-index: 90;
    width: 260px;
  }
  .sidebar.open { display: block; }
  .content { max-width: 100%; padding: 1.5rem 1.25rem; }
  .docs-layout { display: block; }
  .not-found { padding: 6rem 1.25rem 3rem; }
  .not-found h1 { font-size: 2.4rem; }
}