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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #172033;
  background: #ffffff;
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  border-bottom: 1px solid #e5e7eb;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  z-index: 10;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 800;
  font-size: 1.125rem;
  color: #0f172a;
  letter-spacing: -0.02em;
}

.nav a {
  margin-left: 1.5rem;
  text-decoration: none;
  color: #475569;
  font-size: 0.9375rem;
  font-weight: 600;
}

.nav a:hover {
  color: #0f172a;
}

.hero {
  padding: 5rem 0 3.5rem;
  text-align: center;
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.10), transparent 32rem),
    linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.eyebrow {
  display: inline-block;
  color: #2563eb;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  font-size: 0.84rem;
  font-weight: 800;
  margin-bottom: 1.1rem;
}

.hero h1 {
  font-size: clamp(2.1rem, 5vw, 4.2rem);
  font-weight: 850;
  line-height: 1.05;
  color: #0f172a;
  letter-spacing: -0.055em;
  max-width: 820px;
  margin: 0 auto 1.1rem;
}

.subheadline {
  font-size: 1.125rem;
  color: #475569;
  max-width: 760px;
  margin: 0 auto 1.9rem;
}

.cta-button {
  display: inline-block;
  background: #0f172a;
  color: #ffffff;
  padding: 0.95rem 1.75rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 750;
  font-size: 1rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.18);
}

.cta-button:hover {
  background: #1e293b;
  transform: translateY(-1px);
}

.hero-note {
  font-size: 0.875rem;
  color: #64748b;
  max-width: 680px;
  margin: 0 auto;
}

section {
  padding: 3.5rem 0;
}

section h2 {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.035em;
  margin-bottom: 0.85rem;
}

section p {
  color: #334155;
  margin-bottom: 1rem;
}

.pain-section,
.checklist-section {
  background: #f8fafc;
}

.driver-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.card {
  border: 1px solid #e2e8f0;
  border-radius: 18px;
  padding: 1.25rem;
  background: linear-gradient(180deg, #ffffff, #f8fafc);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.06);
}

.card h3 {
  font-size: 1rem;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 0.375rem;
}

.card p {
  font-size: 0.9rem;
  color: #475569;
  margin: 0;
}

.checklist-intro {
  max-width: 740px;
}

.preview-box,
.email-form {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 18px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.05);
}

.preview-box h3 {
  font-size: 1.05rem;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 0.75rem;
}

.preview-box ol {
  margin-left: 1.25rem;
  color: #334155;
}

.preview-box li {
  margin-bottom: 0.375rem;
}

.preview-note,
.form-note {
  font-size: 0.875rem;
  color: #64748b;
  margin-top: 0.75rem;
  margin-bottom: 0;
}

.email-form label {
  display: block;
  font-weight: 750;
  color: #0f172a;
  margin-bottom: 0.55rem;
}

.email-form input {
  width: 100%;
  padding: 0.8rem 0.9rem;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  font-size: 1rem;
  margin-bottom: 0.7rem;
  color: #64748b;
  background: #f8fafc;
}

.email-form button {
  width: 100%;
  padding: 0.82rem;
  background: #94a3b8;
  color: #ffffff;
  border: none;
  border-radius: 12px;
  font-weight: 800;
  font-size: 1rem;
  cursor: not-allowed;
}

.direct-download {
  text-align: center;
}

.download-link {
  color: #1d4ed8;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.disclaimer-section {
  background: #ffffff;
  border-top: 1px solid #e2e8f0;
}

.disclaimer-section h2 {
  font-size: 1.125rem;
  color: #334155;
  margin-bottom: 0.5rem;
}

.disclaimer-section p {
  font-size: 0.9rem;
  color: #64748b;
  max-width: 800px;
  margin-bottom: 0;
}

.site-footer {
  border-top: 1px solid #e2e8f0;
  padding: 1.5rem 0;
  text-align: center;
  background: #f8fafc;
}

.site-footer p {
  font-size: 0.875rem;
  color: #64748b;
  margin: 0;
}

@media (max-width: 640px) {
  .site-header .container {
    gap: 1rem;
  }

  .nav a {
    margin-left: 0.85rem;
    font-size: 0.875rem;
  }

  section {
    padding: 2.75rem 0;
  }

  .hero {
    padding: 4rem 0 3rem;
  }
}