:root {
  --bg: #0b1120;
  --bg-soft: #0f1729;
  --panel: #111a2e;
  --border: #1e2a44;
  --text: #e2e8f0;
  --dim: #8fa3c0;
  --accent: #60a5fa;
  --green: #34d399;
}

* { box-sizing: border-box; margin: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 14px 6vw;
  background: rgba(11, 17, 32, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.2px;
}

.nav-links {
  display: flex;
  gap: 26px;
  margin-left: auto;
}

.nav-links a { color: var(--dim); font-size: 14.5px; font-weight: 500; }
.nav-links a:hover { color: var(--text); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 9px 20px;
  border-radius: 8px;
  font-size: 14.5px;
  font-weight: 600;
  white-space: nowrap;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.btn-lg { padding: 13px 28px; font-size: 16px; }

.btn-primary {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #fff;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.35);
}

.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 26px rgba(59, 130, 246, 0.5); }

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-ghost:hover { border-color: var(--accent); }

/* Hero */
.hero {
  position: relative;
  text-align: center;
  padding: 96px 6vw 72px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  inset: -40% -20% auto;
  height: 130%;
  background:
    radial-gradient(40% 50% at 30% 30%, rgba(59, 130, 246, 0.18), transparent 70%),
    radial-gradient(35% 45% at 70% 25%, rgba(52, 211, 153, 0.12), transparent 70%);
  pointer-events: none;
}

.hero h1 {
  position: relative;
  font-size: clamp(34px, 5.2vw, 58px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.5px;
}

.accent {
  background: linear-gradient(90deg, #60a5fa, #34d399);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  position: relative;
  max-width: 760px;
  margin: 24px auto 0;
  color: var(--dim);
  font-size: 17.5px;
}

.hero-actions {
  position: relative;
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-top: 36px;
  flex-wrap: wrap;
}

.metrics {
  position: relative;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  max-width: 980px;
  margin: 64px auto 0;
}

.metric {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px 18px;
}

.metric-value {
  display: block;
  font-size: 34px;
  font-weight: 800;
  background: linear-gradient(90deg, #60a5fa, #34d399);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.metric-label { color: var(--dim); font-size: 13.5px; }

/* Sections */
.section {
  padding: 72px 6vw;
  max-width: 1200px;
  margin: 0 auto;
}

.section h2 {
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 750;
  text-align: center;
  letter-spacing: -0.3px;
}

.section-sub {
  text-align: center;
  color: var(--dim);
  max-width: 680px;
  margin: 14px auto 0;
  font-size: 16.5px;
}

.grid {
  display: grid;
  gap: 18px;
  margin-top: 44px;
}

.features { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.steps { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.audience { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 26px;
}

.card h3 { font-size: 17.5px; font-weight: 650; margin-bottom: 10px; }
.card p { color: var(--dim); font-size: 14.5px; }

.step { text-align: left; }

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(96, 165, 250, 0.15);
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 14px;
}

/* Demo */
.demo-frame-wrap {
  margin-top: 44px;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  background: var(--bg-soft);
}

.demo-frame {
  display: block;
  width: 100%;
  height: 720px;
  border: 0;
}

.demo-note { text-align: center; margin-top: 16px; font-size: 14.5px; }

/* CTA + footer */
.cta { text-align: center; }
.cta .btn { margin-top: 32px; }

.footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 28px 6vw;
  border-top: 1px solid var(--border);
  color: var(--dim);
  font-size: 13.5px;
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .demo-frame { height: 560px; }
}