:root {
  --bg: #ffffff;
  --text: #1f2937;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --accent: #1a73e8;
  --accent-hover: #1557b0;
  --card: #f9fafb;
  --code-bg: #f3f4f6;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #1e293b;
    --accent: #60a5fa;
    --accent-hover: #93c5fd;
    --card: #1e293b;
    --code-bg: #1e293b;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

header.site-header {
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
  padding-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  font-size: 17px;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #4f46e5);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 14px;
}

nav.site-nav {
  display: flex;
  gap: 20px;
  font-size: 14px;
}

nav.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

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

h1 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.hero h1 {
  font-size: 40px;
}

.hero p.tagline {
  font-size: 18px;
  color: var(--text-muted);
  margin: 0 0 28px;
}

.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

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

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

h2 {
  font-size: 22px;
  font-weight: 600;
  margin: 40px 0 12px;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 24px 0 8px;
}

p {
  margin: 0 0 16px;
}

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

a:hover {
  text-decoration: underline;
}

ul {
  padding-left: 24px;
  margin: 0 0 16px;
}

li {
  margin-bottom: 6px;
}

code {
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: "SF Mono", Monaco, Menlo, Consolas, "Liberation Mono", monospace;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin: 16px 0 24px;
  font-size: 15px;
}

th,
td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 24px 0 48px;
}

.feature {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}

.feature h3 {
  margin-top: 0;
  font-size: 16px;
}

.feature p {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
}

.meta {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0 0 32px;
}

footer.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 64px;
  padding-top: 24px;
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

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

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

@media (max-width: 600px) {
  .container {
    padding: 24px 16px 60px;
  }
  h1 {
    font-size: 26px;
  }
  .hero h1 {
    font-size: 30px;
  }
  .hero p.tagline {
    font-size: 16px;
  }
}