* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: #1a1a1a;
  line-height: 1.55;
  background: #fafafa;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.container.narrow {
  max-width: 760px;
}

.hero {
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  color: #f8fafc;
  padding: 96px 0 80px;
}
.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  color: #94a3b8;
  margin: 0 0 18px;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.1;
  margin: 0 0 22px;
  letter-spacing: -0.02em;
  font-weight: 700;
}
.hero .lede {
  max-width: 680px;
  font-size: 1.15rem;
  color: #cbd5e1;
  margin: 0 0 32px;
}
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 0; }
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.08s ease, background 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn.primary { background: #38bdf8; color: #0f172a; }
.btn.primary:hover { background: #7dd3fc; }
.btn.ghost { background: transparent; color: #f8fafc; border: 1px solid #475569; }
.btn.ghost:hover { background: rgba(255,255,255,0.06); }

.band {
  padding: 72px 0;
  border-top: 1px solid #e5e7eb;
}
.band.alt { background: #f1f5f9; }
.band.foot {
  padding: 36px 0;
  background: #0f172a;
  color: #94a3b8;
  font-size: 0.9rem;
}
.band.foot a { color: #cbd5e1; }

h2 {
  font-size: 2rem;
  margin: 0 0 18px;
  letter-spacing: -0.01em;
}
h3 { font-size: 1.2rem; margin: 0 0 8px; }
p { margin: 0 0 14px; }

.step {
  display: flex;
  gap: 22px;
  align-items: flex-start;
  padding: 22px 0;
  border-bottom: 1px solid #e2e8f0;
}
.step:last-child { border-bottom: none; }
.step-num {
  flex: 0 0 auto;
  width: 38px; height: 38px;
  border-radius: 50%;
  background: #0f172a;
  color: #f8fafc;
  display: grid; place-items: center;
  font-weight: 700;
  font-size: 0.95rem;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
  background: #e2e8f0;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 0.9em;
}

ul { padding-left: 22px; }
ul li { margin: 0 0 8px; }

a { color: #0369a1; }
a:hover { text-decoration: underline; }

.demo-caption {
  max-width: 760px;
  margin: 0 auto 24px;
  color: #475569;
  font-size: 1rem;
}
.demo-caption.muted {
  text-align: center;
  font-size: 0.88rem;
  color: #64748b;
  margin-top: 18px;
  margin-bottom: 0;
}
.muted { color: #64748b; }

.voice-caption {
  margin-bottom: 18px;
}
.voice-player {
  display: block;
  width: 100%;
  max-width: 560px;
  margin: 8px 0 12px;
}
.voice-meta {
  font-size: 0.9rem;
  margin-top: 6px;
}

.demo-frame {
  max-width: 980px;
  margin: 0 auto;
  background: #0f172a;
  border: 1px solid #1e293b;
  border-radius: 10px;
  padding: 14px;
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.18);
  overflow: hidden;
}
.demo-frame .ap-player {
  border-radius: 6px;
  overflow: hidden;
}

@media (max-width: 720px) {
  .demo-frame { padding: 8px; }
}