:root {
  --bg: #ffffff;
  --bg-alt: #f5f5f5;
  --bg-code: #0a0a0a;
  --ink: #0a0a0a;
  --ink-soft: #2a2a2a;
  --muted: #6a6a6a;
  --line: #e5e5e5;
  --line-strong: #1a1a1a;
  --accent: #0a0a0a;
  --on-accent: #ffffff;
  --radius: 4px;
  --radius-lg: 8px;
  --container: 1100px;
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--muted); }

h1, h2, h3 { font-weight: 600; letter-spacing: -0.02em; line-height: 1.15; margin: 0 0 0.5em; color: var(--ink); }
h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); }
h3 { font-size: 1.15rem; }

p { margin: 0 0 1em; }

code { font-family: var(--font-mono); font-size: 0.92em; background: var(--bg-alt); padding: 0.1em 0.35em; border-radius: 3px; border: 1px solid var(--line); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
  z-index: 10;
}
.header-row { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; font-weight: 600; }
.brand-mark { color: var(--ink); font-size: 1.1em; }
.brand-name { letter-spacing: -0.01em; }
.nav { display: flex; align-items: center; gap: 22px; }
.nav a { text-decoration: none; color: var(--ink-soft); font-size: 0.95rem; }
.nav a:hover { color: var(--ink); }
.nav-cta {
  border: 1px solid var(--line-strong);
  padding: 6px 14px;
  border-radius: var(--radius);
  color: var(--ink) !important;
}
.nav-cta:hover { background: var(--ink); color: var(--on-accent) !important; }

/* Hero */
.hero { padding: 96px 0 72px; border-bottom: 1px solid var(--line); }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 16px;
}
.hero h1 { margin-bottom: 24px; }
.lede {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 720px;
  margin-bottom: 32px;
}
.lede strong { color: var(--ink); font-weight: 600; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 56px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.98rem;
  border: 1px solid transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn-primary { background: var(--ink); color: var(--on-accent); border-color: var(--ink); }
.btn-primary:hover { background: #2a2a2a; color: var(--on-accent); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { background: var(--ink); color: var(--on-accent); }
.btn.block { display: flex; width: 100%; margin-top: 16px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
  list-style: none;
  padding: 24px 0 0;
  margin: 0;
  border-top: 1px solid var(--line);
}
.hero-stats li { display: flex; flex-direction: column; gap: 4px; }
.stat-num { font-size: 1.6rem; font-weight: 600; letter-spacing: -0.02em; }
.stat-label { font-size: 0.85rem; color: var(--muted); }

/* Sections */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-title { margin-bottom: 12px; }
.section-lede { color: var(--ink-soft); max-width: 680px; margin-bottom: 48px; font-size: 1.05rem; }
.section-foot { margin-top: 32px; color: var(--muted); font-size: 0.95rem; }

/* Feature grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.card {
  background: var(--bg);
  padding: 28px 26px;
}
.card h3 { margin-bottom: 8px; }
.card p { color: var(--ink-soft); margin: 0; font-size: 0.97rem; }

/* Integrations */
.integrations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}
.integration-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.integration-card:hover { border-color: var(--line-strong); }
.integration-card-featured {
  border-color: var(--line-strong);
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
  background: var(--bg);
}
.integration-mark {
  width: 40px;
  height: 40px;
  margin-bottom: 16px;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.integration-mark svg { width: 100%; height: 100%; }
.integration-mark-lg { width: 52px; height: 52px; }
.integration-card h3 { font-size: 1rem; margin-bottom: 6px; }
.integration-card p { font-size: 0.9rem; color: var(--ink-soft); margin: 0; }

/* Editions */
.editions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.edition {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  background: var(--bg);
  display: flex;
  flex-direction: column;
}
.edition-featured {
  border-color: var(--line-strong);
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}
.edition-head { margin-bottom: 24px; }
.edition-head h3 { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.edition-tag {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 3px 8px;
  border-radius: 3px;
  background: var(--bg-alt);
  color: var(--muted);
  font-weight: 500;
}
.edition-tag-pro { background: var(--ink); color: var(--on-accent); }
.edition-price { color: var(--muted); font-size: 0.95rem; margin: 8px 0 0; }
.edition-list { list-style: none; padding: 0; margin: 0 0 8px; flex: 1; }
.edition-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.97rem;
}
.edition-list li:last-child { border-bottom: none; }
.edition-list li::before { content: "— "; color: var(--muted); }

/* Code */
.code-stack { display: grid; gap: 18px; }
.code-block {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-code);
}
.code-head {
  background: var(--ink);
  color: var(--on-accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 8px 16px;
  border-bottom: 1px solid #1f1f1f;
}
.code-block pre {
  margin: 0;
  padding: 18px 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.55;
  color: #e5e5e5;
  background: var(--bg-code);
}
.code-block code { background: transparent; border: 0; padding: 0; color: inherit; font-size: inherit; }

/* Contact */
.contact-card {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  background: var(--bg);
  max-width: 520px;
}
.contact-card p { margin: 4px 0; color: var(--ink-soft); }
.contact-card p:first-child { color: var(--ink); margin-bottom: 8px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0 48px; background: var(--bg); }
.footer-row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding-bottom: 24px; border-bottom: 1px solid var(--line); margin-bottom: 24px; }
.footer-nav { display: flex; gap: 18px; }
.footer-nav a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
.footer-nav a:hover { color: var(--ink); }
.legal { color: var(--muted); font-size: 0.78rem; line-height: 1.55; max-width: 980px; }
.legal p { margin: 0 0 10px; }
.legal p:last-child { margin-bottom: 0; }
.legal strong { color: var(--ink-soft); font-weight: 600; }
.legal a { color: var(--muted); }
.legal a:hover { color: var(--ink); }
.legal-meta { padding-top: 8px; border-top: 1px solid var(--line); }

/* Responsive */
@media (max-width: 720px) {
  .nav { gap: 14px; }
  .nav a:not(.nav-cta) { display: none; }
  .hero { padding: 64px 0 48px; }
  .section { padding: 64px 0; }
}