:root {
  --indigo: #4f46e5;
  --indigo-dark: #3730a3;
  --cyan: #06b6d4;
  --ink: #0f172a;
  --slate: #475569;
  --muted: #94a3b8;
  --line: #e2e8f0;
  --bg: #f8fafc;
  --card: #ffffff;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 24px 60px rgba(79, 70, 229, 0.18);
}

* { 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;
}
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; }
a { color: inherit; text-decoration: none; }
section { padding: 72px 24px; max-width: 1120px; margin: 0 auto; }
section > h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); text-align: center; margin: 0 0 8px; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; }
.brand-name { font-size: 1.05rem; letter-spacing: -0.02em; }
.brand-mark {
  display: inline-flex; align-items: center; gap: 2px;
  width: 34px; height: 34px; justify-content: center;
  background: linear-gradient(135deg, var(--indigo), var(--indigo-dark));
  border-radius: 9px; padding: 0 5px;
}
.brand-mark i { width: 3px; border-radius: 2px; background: #fff; display: block; }
.brand-mark i:nth-child(1){height:10px}.brand-mark i:nth-child(2){height:18px}
.brand-mark i:nth-child(3){height:26px}.brand-mark i:nth-child(4){height:16px}
.brand-mark i:nth-child(5){height:9px}
.nav-links { display: flex; align-items: center; gap: 22px; font-weight: 600; font-size: 0.95rem; }
.nav-links a:hover { color: var(--indigo); }
.lang-toggle {
  border: 1px solid var(--line); background: #fff; border-radius: 999px;
  width: 40px; height: 30px; font-weight: 700; cursor: pointer; color: var(--indigo);
}
.lang-toggle:hover { border-color: var(--indigo); }

.promo-bar {
  background: linear-gradient(90deg, var(--cyan), var(--indigo));
  color: #fff; text-align: center; font-weight: 700; font-size: 0.92rem;
  padding: 9px 16px;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: none; border-radius: 12px; font-weight: 700; cursor: pointer;
  padding: 12px 20px; font-size: 1rem; transition: transform .12s ease, box-shadow .12s ease, background .12s;
}
.btn:hover { transform: translateY(-1px); }
.btn-lg { padding: 15px 26px; font-size: 1.05rem; }
.btn-block { width: 100%; }
.btn-primary { background: linear-gradient(135deg, var(--indigo), var(--indigo-dark)); color: #fff; box-shadow: var(--shadow-lg); }
.btn-secondary { background: #e2e8f0; color: var(--ink); }
.btn-outline { background: transparent; border: 2px solid var(--indigo); color: var(--indigo); }
.btn-outline.btn-block { border-color: var(--line); color: var(--slate); }
.btn-ghost-sm { background: var(--indigo); color: #fff; padding: 8px 14px; border-radius: 10px; }
.hidden { display: none !important; }

/* Hero */
.hero {
  background:
    radial-gradient(1200px 400px at 80% -10%, rgba(6,182,212,0.18), transparent),
    radial-gradient(900px 500px at 0% 0%, rgba(79,70,229,0.16), transparent);
  max-width: none; padding: 0;
}
.hero-inner {
  max-width: 1120px; margin: 0 auto; padding: 64px 24px 72px;
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center;
}
.eyebrow { color: var(--indigo); font-weight: 800; text-transform: uppercase; letter-spacing: .08em; font-size: .8rem; margin: 0 0 12px; }
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); margin: 0 0 16px; }
.lede { font-size: 1.18rem; color: var(--slate); margin: 0 0 26px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 22px; }
.hero-points { list-style: none; padding: 0; margin: 0; display: flex; gap: 18px; flex-wrap: wrap; color: var(--slate); font-weight: 600; }
.hero-points li { position: relative; padding-left: 22px; }
.hero-points li::before { content: '✓'; position: absolute; left: 0; color: #16a34a; font-weight: 900; }

/* Demo panel */
.demo-panel {
  background: var(--card); border: 1px solid var(--line); border-radius: 24px;
  padding: 28px; box-shadow: var(--shadow-lg); text-align: center;
}
.demo-head { display: flex; align-items: center; justify-content: center; gap: 8px; font-weight: 800; color: var(--ink); }
.live-dot { width: 10px; height: 10px; border-radius: 50%; background: #ef4444; box-shadow: 0 0 0 0 rgba(239,68,68,.6); animation: pulse 1.8s infinite; }
@keyframes pulse { 0%{box-shadow:0 0 0 0 rgba(239,68,68,.5)} 70%{box-shadow:0 0 0 12px rgba(239,68,68,0)} 100%{box-shadow:0 0 0 0 rgba(239,68,68,0)} }
.demo-sub { color: var(--muted); font-size: .92rem; margin: 6px 0 18px; }
.demo-orb {
  width: 132px; height: 132px; margin: 8px auto 16px; border-radius: 50%;
  display: grid; place-items: center; font-size: 2.6rem;
  background: radial-gradient(circle at 30% 30%, #6366f1, #3730a3);
  box-shadow: 0 12px 40px rgba(79,70,229,.45); color: #fff; transition: transform .2s;
}
.demo-orb.listening { animation: orb 1.4s ease-in-out infinite; }
@keyframes orb { 0%,100%{transform:scale(1)} 50%{transform:scale(1.06)} }
.demo-status { min-height: 22px; color: var(--slate); font-weight: 600; margin: 0 0 16px; }
.demo-panel .btn { margin-bottom: 10px; }
.demo-help { font-size: .85rem; color: var(--slate); background: #fff7ed; border: 1px solid #fed7aa; border-radius: 12px; padding: 12px; text-align: left; }
.demo-help ol { margin: 6px 0 0; padding-left: 18px; }
.like-cta {
  display: block; width: 100%; margin-top: 10px; background: none; border: none;
  color: var(--indigo); font-weight: 800; font-size: 1rem; cursor: pointer; padding: 8px;
}
.like-cta:hover { text-decoration: underline; }

/* Features */
.features h2 { margin-bottom: 36px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card-ic { font-size: 1.8rem; margin-bottom: 10px; }
.card h3 { margin: 0 0 6px; font-size: 1.12rem; }
.card p { margin: 0; color: var(--slate); font-size: .96rem; }

/* How */
.how { background: linear-gradient(180deg, #fff, var(--bg)); border-radius: 28px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 36px; }
.step { text-align: center; padding: 12px; }
.step-n {
  display: grid; place-items: center; width: 48px; height: 48px; margin: 0 auto 14px;
  border-radius: 50%; background: linear-gradient(135deg, var(--indigo), var(--indigo-dark));
  color: #fff; font-weight: 800; font-size: 1.2rem; box-shadow: var(--shadow-lg);
}
.step h3 { margin: 0 0 6px; }
.step p { color: var(--slate); margin: 0; }

/* Pricing */
.price-sub { text-align: center; color: var(--slate); margin: 0 auto 36px; max-width: 640px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.tier {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 20px; text-align: center; position: relative; box-shadow: var(--shadow);
}
.tier.popular { border-color: var(--indigo); box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.tier .badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--indigo); color: #fff; font-size: .7rem; font-weight: 800;
  padding: 4px 12px; border-radius: 999px; letter-spacing: .05em;
}
.tier h3 { margin: 0 0 8px; font-size: 1.1rem; }
.tier .price { font-size: 2rem; font-weight: 800; color: var(--indigo-dark); }
.tier .price small { font-size: .9rem; color: var(--muted); font-weight: 600; }
.tier .mins { color: var(--slate); font-size: .92rem; margin: 8px 0 0; }
.price-foot { text-align: center; color: var(--muted); margin-top: 24px; font-size: .92rem; }

/* CTA band */
.cta-band {
  background: linear-gradient(135deg, var(--indigo-dark), var(--ink));
  max-width: none; color: #fff;
}
.cta-inner { max-width: 720px; margin: 0 auto; text-align: center; }
.cta-band h2 { color: #fff; }
.cta-band p { color: #cbd5e1; margin: 8px 0 26px; }
.lead-form { display: grid; gap: 12px; text-align: left; }
.lead-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.lead-form input, .lead-form textarea {
  width: 100%; padding: 14px 16px; border-radius: 12px; border: 1px solid transparent;
  font-size: 1rem; font-family: inherit; background: rgba(255,255,255,0.95);
}
.lead-form input:focus, .lead-form textarea:focus { outline: 2px solid var(--cyan); }
.lead-result { text-align: center; font-weight: 700; min-height: 22px; margin: 4px 0 0; }
.lead-result.ok { color: #6ee7b7; }
.lead-result.err { color: #fca5a5; }

/* FAQ */
.faq { max-width: 800px; }
.faq h2 { margin-bottom: 28px; }
.faq details {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 20px; margin-bottom: 12px; box-shadow: var(--shadow);
}
.faq summary { font-weight: 700; cursor: pointer; }
.faq details p { color: var(--slate); margin: 10px 0 0; }

/* Footer */
.site-footer {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px;
  padding: 32px 24px; max-width: 1120px; margin: 0 auto; border-top: 1px solid var(--line);
}
.foot-brand { display: flex; flex-direction: column; }
.foot-contact { display: flex; gap: 20px; align-items: center; font-weight: 700; }
.foot-contact a:hover { color: var(--indigo); }
.muted { color: var(--muted); font-weight: 500; font-size: .9rem; }

@media (max-width: 880px) {
  .hero-inner { grid-template-columns: 1fr; gap: 32px; }
  .grid-3, .grid-4, .steps { grid-template-columns: 1fr 1fr; }
  .nav-links a:not(.btn-ghost-sm) { display: none; }
}
@media (max-width: 560px) {
  .grid-3, .grid-4, .steps, .lead-row { grid-template-columns: 1fr; }
  .tier.popular { transform: none; }
  section { padding: 52px 18px; }
}