:root {
  --bg: #0b0f17;
  --bg-card: #121826;
  --fg: #e5e7eb;
  --muted: #94a3b8;
  --border: #1f2937;
  --accent: #4ade80;
  --accent2: #22d3ee;
  --danger: #f87171;
  --warn: #fbbf24;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, "Segoe UI", Inter, Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { color: #f8fafc; margin: 0 0 16px; line-height: 1.2; }
h1 { font-size: 56px; font-weight: 800; letter-spacing: -0.02em; }
h2 { font-size: 32px; margin-top: 0; }
h3 { font-size: 18px; }

.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 32px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: rgba(11,15,23,0.85); backdrop-filter: blur(8px); z-index: 100;
}
.brand { color: #f8fafc; font-weight: 700; font-size: 18px; }
.brand .logo { color: var(--accent); margin-right: 4px; }
.nav nav { display: flex; gap: 18px; align-items: center; }
.nav nav a { color: var(--fg); }

.btn {
  display: inline-block; padding: 10px 18px; border-radius: 8px;
  font-weight: 600; cursor: pointer; border: 1px solid transparent;
  font-size: 14px; transition: transform 0.05s ease;
}
.btn.primary { background: var(--accent); color: #0b1020; }
.btn.primary:hover { background: #6ee7a3; text-decoration: none; }
.btn.ghost { background: transparent; color: var(--fg); border-color: var(--border); }
.btn.ghost:hover { border-color: var(--accent); text-decoration: none; }
.btn:active { transform: translateY(1px); }
a.cta { background: var(--accent); color: #0b1020; padding: 8px 14px; border-radius: 8px; font-weight: 600; }

section { padding: 80px 32px; max-width: 1080px; margin: 0 auto; }

.hero { text-align: center; padding-top: 96px; padding-bottom: 64px; }
.hero h1 { margin-bottom: 24px; }
.lede { font-size: 20px; color: var(--muted); max-width: 720px; margin: 0 auto 24px; }
.cta-row { display: flex; gap: 12px; justify-content: center; margin-top: 24px; }
.trust-line { color: var(--muted); font-size: 13px; margin-top: 16px; }

.demo textarea {
  width: 100%; padding: 16px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 8px; color: var(--fg); font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 14px; resize: vertical; line-height: 1.5;
}
.demo-row { display: flex; gap: 8px; margin: 12px 0; align-items: center; }
.demo-row select {
  background: var(--bg-card); color: var(--fg); border: 1px solid var(--border);
  padding: 8px 10px; border-radius: 6px; font-size: 13px;
}
#demo-output {
  background: var(--bg-card); padding: 18px; border-radius: 8px;
  border: 1px solid var(--border); font-size: 13px; overflow-x: auto;
  max-height: 400px;
}
.examples summary { cursor: pointer; color: var(--muted); margin-top: 12px; font-size: 13px; }
.examples button.example {
  display: block; margin: 6px 0; background: transparent; border: 1px solid var(--border);
  color: var(--fg); padding: 8px 12px; border-radius: 6px; cursor: pointer; font-size: 13px;
}
.examples button.example:hover { border-color: var(--accent); }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px;
  padding: 24px;
}

.signup form { display: flex; gap: 8px; max-width: 480px; }
.signup input {
  flex: 1; padding: 10px 14px; background: var(--bg-card); border: 1px solid var(--border);
  color: var(--fg); border-radius: 8px; font-size: 15px;
}
.signup input:focus { outline: none; border-color: var(--accent); }
.snippet { margin-top: 24px; }
.snippet pre {
  background: #04060c; border: 1px solid var(--border); border-radius: 8px;
  padding: 14px 16px; overflow-x: auto; font-size: 13px;
}
.snippet h4 { margin-top: 14px; color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; }
code { font-family: ui-monospace, SFMono-Regular, monospace; }

.tiers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.tier {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px;
  padding: 24px; display: flex; flex-direction: column;
}
.tier.featured { border-color: var(--accent); position: relative; }
.tier.featured::before {
  content: "Most popular"; position: absolute; top: -10px; right: 16px;
  background: var(--accent); color: #0b1020; font-size: 11px; padding: 3px 8px;
  border-radius: 999px; font-weight: 700;
}
.tier .price { font-size: 36px; font-weight: 700; color: #f8fafc; margin: 8px 0 16px; }
.tier .price span { font-size: 14px; color: var(--muted); font-weight: 400; }
.tier ul { list-style: none; padding: 0; margin: 0 0 24px; flex: 1; }
.tier li { padding: 6px 0; color: var(--muted); }
.tier li::before { content: "✓ "; color: var(--accent); font-weight: 700; }
.tier .btn { width: 100%; text-align: center; }

.muted { color: var(--muted); }
.muted.small { font-size: 12px; }

.trust {
  background: var(--bg-card); border-radius: 12px; padding: 32px;
  border: 1px solid var(--border); margin: 64px 32px; max-width: 1080px;
  margin-left: auto; margin-right: auto;
}

footer {
  text-align: center; padding: 40px 32px; color: var(--muted); font-size: 13px;
  border-top: 1px solid var(--border);
}

.safe { color: var(--accent); }
.unsafe { color: var(--danger); }

@media (max-width: 800px) {
  h1 { font-size: 36px; }
  .nav nav a:not(.cta) { display: none; }
  .cards { grid-template-columns: 1fr; }
  .tiers { grid-template-columns: 1fr; }
  section { padding: 56px 20px; }
}