*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0d0f14;
  --surface: #161b24;
  --border: #1e2733;
  --text: #e4e8f0;
  --muted: #7a8599;
  --accent: #4f8ef7;
  --accent-dim: #1a2a4a;
  --green: #22c55e;
  --radius: 12px;
  --max-w: 1080px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* NAV */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 15, 20, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.3px;
}
.btn-nav {
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s;
}
.btn-nav:hover { background: var(--accent); color: #fff; }

/* HERO */
.hero {
  padding: 96px 0 72px;
  text-align: center;
}
.badge {
  display: inline-block;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 99px;
  padding: 4px 14px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 20px;
}
.hero-sub {
  font-size: 18px;
  color: var(--muted);
  max-width: 580px;
  margin: 0 auto 36px;
}
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }

/* SIGNAL CARDS */
.signals {
  padding: 64px 0;
}
.section-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--muted);
  text-align: center;
  margin-bottom: 36px;
  letter-spacing: -0.3px;
}
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s;
}
.card:hover { border-color: var(--accent); }
.card-meta {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.tag {
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 6px;
}
.tag-velocity { background: #1a2e1a; color: var(--green); }
.tag-source { background: #1a2233; color: #7eb3f7; }
.card h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 10px;
}
.card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 16px;
}
.card-bottom { border-top: 1px solid var(--border); padding-top: 12px; }
.intent { font-size: 12px; color: var(--muted); }

/* HOW IT WORKS */
.how { padding: 64px 0; }
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 8px;
}
.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.step-num {
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 16px;
}
.step h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--muted); }

/* EMAIL CAPTURE */
.capture {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--bg) 0%, #0a0f1a 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.capture-inner { text-align: center; }
.capture h2 {
  font-size: clamp(22px, 3.5vw, 34px);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}
.capture > .container-inner > p,
.capture-inner > p {
  color: var(--muted);
  font-size: 16px;
  margin-bottom: 32px;
}
.capture-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.input-email {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 15px;
  color: var(--text);
  width: 320px;
  max-width: 100%;
  outline: none;
  transition: border-color 0.2s;
}
.input-email:focus { border-color: var(--accent); }
.fine-print { font-size: 12px; color: var(--muted); }

/* FOOTER */
.footer {
  padding: 28px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--muted);
}
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--text); }

/* RESPONSIVE */
@media (max-width: 600px) {
  .hero { padding: 64px 0 48px; }
  .capture-form { flex-direction: column; align-items: center; }
  .input-email { width: 100%; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
}