:root {
  --brand: #0d9488;
  --brand-dark: #0f766e;
  --accent: #5eead4;
  --ink: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --radius: 14px;
  --maxw: 1040px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

a { color: var(--brand-dark); }

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  text-decoration: none;
}
.brand img { width: 30px; height: 30px; }
.nav a {
  margin-left: 22px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
}
.nav a:not(.btn) { color: var(--ink); }
.nav a:not(.btn):hover { color: var(--muted); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 11px 18px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--border); }
.btn-ghost:hover { background: var(--bg-soft); }

/* Hero */
.hero {
  padding: 88px 0 64px;
  background:
    radial-gradient(1100px 380px at 80% -10%, rgba(94, 234, 212, 0.25), transparent),
    var(--bg-soft);
  border-bottom: 1px solid var(--border);
}
.hero h1 {
  font-size: 46px;
  line-height: 1.1;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
  max-width: 720px;
}
.hero p.lede {
  font-size: 19px;
  color: var(--muted);
  max-width: 620px;
  margin: 0 0 28px;
}
.hero .cta { display: flex; gap: 12px; flex-wrap: wrap; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-dark);
  background: rgba(13, 148, 136, 0.1);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}

/* Sections */
section { padding: 64px 0; }
.section-title { font-size: 30px; margin: 0 0 8px; letter-spacing: -0.01em; }
.section-sub { color: var(--muted); font-size: 17px; margin: 0 0 36px; }

/* Add-on cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  background: #fff;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.card:hover { box-shadow: 0 12px 30px rgba(15, 23, 42, 0.07); transform: translateY(-2px); }
.card h3 { margin: 0 0 6px; font-size: 20px; }
.card .tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-dark);
  background: rgba(13, 148, 136, 0.1);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.card p { color: var(--muted); margin: 0 0 16px; }
.card ul { margin: 0 0 18px; padding-left: 18px; color: var(--muted); }
.card ul li { margin: 4px 0; }

/* Feature grid */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 28px; }
.feature h4 { margin: 0 0 6px; font-size: 17px; }
.feature p { margin: 0; color: var(--muted); }
.feature .dot {
  width: 38px; height: 38px; border-radius: 10px;
  background: rgba(13, 148, 136, 0.12);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 12px; font-size: 20px;
}
.bg-soft { background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* Footer */
.site-footer {
  padding: 40px 0;
  color: var(--muted);
  font-size: 14px;
}
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; }
.site-footer .links a { color: var(--muted); margin-left: 18px; text-decoration: none; }
.site-footer .links a:hover { color: var(--ink); }
.disclaimer {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--muted);
  max-width: 760px;
}

/* Hero code sample */
.code-card {
  margin-top: 30px;
  background: #0b1220;
  border-radius: 12px;
  padding: 18px 20px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
  max-width: 560px;
  overflow-x: auto;
}
.code-card pre { margin: 0; }
.code-card code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13.5px;
  color: #e2e8f0;
  line-height: 1.7;
  white-space: pre;
}
.code-card .c-fn { color: #5eead4; }
.code-card .c-str { color: #fca5a5; }
.code-card .c-com { color: #64748b; }

/* Inline code */
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: rgba(13, 148, 136, 0.1);
  color: var(--brand-dark);
  padding: 1px 6px;
  border-radius: 5px;
}

/* Steps */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; counter-reset: step; }
.step { position: relative; padding-left: 52px; }
.step .num {
  position: absolute; left: 0; top: 0;
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--brand); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 16px;
}
.step h4 { margin: 4px 0 6px; font-size: 17px; }
.step p { margin: 0; color: var(--muted); }
.step p a { color: var(--brand-dark); }

/* Pricing */
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.plan {
  border: 1px solid var(--border); border-radius: 14px; padding: 28px; background: #fff;
  display: flex; flex-direction: column;
}
.plan.featured { border-color: var(--brand); box-shadow: 0 8px 30px rgba(13, 148, 136, 0.12); }
.plan h3 { margin: 0 0 8px; font-size: 18px; }
.plan .price { font-size: 32px; font-weight: 700; color: var(--ink); margin: 0 0 4px; }
.plan .price span { font-size: 15px; font-weight: 500; color: var(--muted); }
.plan .plan-sub { color: var(--muted); margin: 0 0 16px; }
.plan ul { margin: 0 0 20px; padding-left: 18px; color: var(--muted); }
.plan ul li { margin: 6px 0; }
.plan .btn { margin-top: auto; align-self: flex-start; }

/* Coverage pills */
.coverage { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.coverage .group h4 { margin: 0 0 10px; font-size: 16px; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pills span {
  font-size: 12.5px; color: #334155; background: #fff;
  border: 1px solid var(--border); border-radius: 999px; padding: 4px 11px;
}

/* Formula list */
.formula { margin-bottom: 26px; }
.formula h4 { margin: 0 0 4px; font-size: 17px; }
.formula > p { color: var(--muted); margin: 0 0 12px; }
.formula pre {
  background: #0b1220; color: #e2e8f0; border-radius: 10px;
  padding: 16px 18px; margin: 0; overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13.5px; line-height: 1.7;
}
.formula pre code { background: none; color: inherit; padding: 0; }

/* FAQ */
.faq { max-width: 760px; }
.faq-item { padding: 18px 0; border-bottom: 1px solid var(--border); }
.faq-item:last-child { border-bottom: none; }
.faq-item h4 { margin: 0 0 6px; font-size: 16px; }
.faq-item p { margin: 0; color: var(--muted); }
.faq-item a { color: var(--brand-dark); }

/* Legal pages */
.legal { padding: 56px 0 72px; }
.legal h1 { font-size: 34px; margin: 0 0 6px; }
.legal .updated { color: var(--muted); margin: 0 0 28px; }
.legal h2 { font-size: 21px; margin: 32px 0 8px; }
.legal p, .legal li { color: #334155; }

@media (max-width: 600px) {
  .hero h1 { font-size: 34px; }
  .nav a:not(.btn) { display: none; }
}