:root {
  --bg: #050506;
  --bg-elevated: #0c0c0e;
  --surface: #121214;
  --border: #27272a;
  --border-soft: #1c1c1f;
  --text: #fafafa;
  --muted: #a1a1aa;
  --dim: #71717a;
  --emerald: #34d399;
  --emerald-dim: #059669;
  --emerald-glow: rgba(52, 211, 153, 0.18);
  --amber: #fbbf24;
  --radius: 16px;
  --max: 1120px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, .btn { font-family: inherit; cursor: pointer; }

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(5, 5, 6, 0.8);
  border-bottom: 1px solid var(--border-soft);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 650;
  letter-spacing: -0.03em;
  font-size: 1.05rem;
}
.brand img.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  color: var(--muted);
  font-size: 0.92rem;
}
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; gap: 0.6rem; align-items: center; }
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 0.4rem 0.65rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.7rem 1.15rem;
  font-weight: 600;
  font-size: 0.92rem;
  border: 1px solid transparent;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, opacity .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(180deg, #3ee6a8, var(--emerald-dim));
  color: #042f1a;
  box-shadow: 0 0 0 1px rgba(52,211,153,.25), 0 10px 30px var(--emerald-glow);
}
.btn-primary:hover { filter: brightness(1.05); }
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: #3f3f46; background: var(--surface); }
.btn-lg { padding: 0.9rem 1.4rem; font-size: 1rem; }

/* Hero */
.hero {
  position: relative;
  padding: 4.5rem 0 3.5rem;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: -20% 10% auto;
  height: 480px;
  background:
    radial-gradient(closest-side, var(--emerald-glow), transparent 70%),
    radial-gradient(closest-side, rgba(255,255,255,0.05), transparent 65%);
  filter: blur(10px);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  color: var(--emerald);
  background: rgba(52,211,153,0.08);
  border: 1px solid rgba(52,211,153,0.22);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 1.1rem;
}
.hero h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin: 0 0 1rem;
}
.hero h1 .accent { color: var(--emerald); }
.lead {
  color: var(--muted);
  font-size: 1.12rem;
  max-width: 36rem;
  margin: 0 0 1.6rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1.5rem; }
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  color: var(--dim);
  font-size: 0.85rem;
}
.hero-meta strong { color: var(--muted); font-weight: 600; }

.phone-card {
  background: linear-gradient(180deg, #141417, #0a0a0c);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 1rem;
  box-shadow: 0 30px 80px rgba(0,0,0,0.45);
}
.phone-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem 0.5rem 0.9rem;
  color: var(--dim);
  font-size: 0.75rem;
}
.pill {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.22rem 0.5rem;
  border-radius: 999px;
  background: rgba(52,211,153,0.12);
  color: var(--emerald);
}
.chat {
  background: #09090b;
  border-radius: 18px;
  border: 1px solid var(--border-soft);
  padding: 1rem;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.bubble {
  max-width: 88%;
  padding: 0.7rem 0.85rem;
  border-radius: 14px;
  font-size: 0.88rem;
  line-height: 1.4;
}
.bubble.agent {
  align-self: flex-start;
  background: #18181b;
  border: 1px solid var(--border);
  color: #e4e4e7;
}
.bubble.human {
  align-self: flex-end;
  background: rgba(52,211,153,0.12);
  border: 1px solid rgba(52,211,153,0.25);
  color: #d1fae5;
}
.bubble .who {
  display: block;
  font-size: 0.68rem;
  color: var(--dim);
  margin-bottom: 0.25rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.session-row {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 0.4rem;
}
.session-chip {
  font-size: 0.7rem;
  padding: 0.25rem 0.5rem;
  border-radius: 8px;
  background: #18181b;
  border: 1px solid var(--border);
  color: var(--muted);
}
.session-chip.active {
  border-color: rgba(52,211,153,0.4);
  color: var(--emerald);
}

/* Sections */
section { padding: 4.5rem 0; }
.section-head {
  max-width: 40rem;
  margin-bottom: 2.2rem;
}
.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.03em;
  margin: 0 0 0.6rem;
}
.section-head p { margin: 0; color: var(--muted); }

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.3rem;
}
.card .icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(52,211,153,0.1);
  color: var(--emerald);
  margin-bottom: 0.9rem;
  font-size: 1.1rem;
}
.card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  counter-reset: step;
}
.step {
  position: relative;
  background: linear-gradient(180deg, #141417, var(--bg-elevated));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
}
.step::before {
  counter-increment: step;
  content: counter(step);
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: var(--emerald);
  color: #042f1a;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 0.9rem;
}
.step h3 { margin: 0 0 0.4rem; font-size: 1.05rem; }
.step p { margin: 0; color: var(--muted); font-size: 0.92rem; }
.step code {
  font-family: var(--mono);
  font-size: 0.78rem;
  background: #09090b;
  border: 1px solid var(--border);
  padding: 0.15rem 0.4rem;
  border-radius: 6px;
  color: #d4d4d8;
}

/* Code panel */
.code-panel {
  margin-top: 1.5rem;
  background: #09090b;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.code-panel header {
  display: flex;
  justify-content: space-between;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border-soft);
  color: var(--dim);
  font-size: 0.78rem;
}
.code-panel pre {
  margin: 0;
  padding: 1.1rem 1.2rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.55;
  color: #d4d4d8;
}
.code-panel .c { color: #71717a; }
.code-panel .g { color: var(--emerald); }
.code-panel .w { color: #fafafa; }

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  max-width: 820px;
}
.price-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 1.6rem;
  position: relative;
}
.price-card.featured {
  border-color: rgba(52,211,153,0.45);
  box-shadow: 0 0 0 1px rgba(52,211,153,0.12), 0 20px 50px var(--emerald-glow);
}
.badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.7rem;
  font-weight: 700;
  color: #042f1a;
  background: var(--emerald);
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
}
.price-card h3 { margin: 0 0 0.3rem; font-size: 1.2rem; }
.price-card .price {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  margin: 0.6rem 0;
}
.price-card .price span {
  font-size: 0.95rem;
  color: var(--muted);
  font-weight: 500;
}
.price-card .desc {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0 0 1rem;
}
.price-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1.3rem;
}
.price-card li {
  padding: 0.4rem 0;
  color: #d4d4d8;
  font-size: 0.92rem;
  display: flex;
  gap: 0.5rem;
}
.price-card li::before {
  content: "✓";
  color: var(--emerald);
  font-weight: 700;
}
.note {
  margin-top: 1rem;
  color: var(--dim);
  font-size: 0.85rem;
}

/* FAQ */
.faq {
  display: grid;
  gap: 0.7rem;
  max-width: 760px;
}
.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.95rem 1.1rem;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq details[open] summary { margin-bottom: 0.5rem; color: var(--emerald); }
.faq p { margin: 0; color: var(--muted); font-size: 0.92rem; }

/* CTA band */
.cta-band {
  margin: 1rem 0 3rem;
  border-radius: 24px;
  border: 1px solid rgba(52,211,153,0.28);
  background:
    radial-gradient(ellipse at 20% 0%, var(--emerald-glow), transparent 50%),
    linear-gradient(180deg, #121816, #0a0c0b);
  padding: 2.4rem 1.8rem;
  text-align: center;
}
.cta-band h2 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.03em;
}
.cta-band p { color: var(--muted); margin: 0 0 1.2rem; }
.cta-band .hero-actions { justify-content: center; }

/* Footer */
footer {
  border-top: 1px solid var(--border-soft);
  padding: 2.5rem 0 2rem;
  color: var(--dim);
  font-size: 0.88rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.footer-grid h4 {
  margin: 0 0 0.7rem;
  color: var(--text);
  font-size: 0.85rem;
}
.footer-grid a {
  display: block;
  color: var(--muted);
  padding: 0.2rem 0;
}
.footer-grid a:hover { color: var(--text); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.6rem;
  border-top: 1px solid var(--border-soft);
  padding-top: 1.2rem;
}

/* Logos strip */
.logo-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  align-items: center;
  padding: 1.5rem 0 0;
  color: var(--dim);
  font-size: 0.8rem;
}
.logo-strip img {
  height: 36px;
  width: auto;
  opacity: 0.9;
}

/* Legal pages */
.legal {
  max-width: 720px;
  padding: 3rem 0 4rem;
}
.legal h1 { letter-spacing: -0.03em; }
.legal h2 { margin-top: 1.8rem; font-size: 1.15rem; }
.legal p, .legal li { color: var(--muted); }

@media (max-width: 900px) {
  .hero-grid, .features, .steps, .pricing-grid, .footer-grid {
    grid-template-columns: 1fr;
  }
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav.open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(5,5,6,0.96);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
    align-items: flex-start;
  }
  .hero { padding-top: 2.5rem; }
}