:root {
  --bg: #fff;
  --fg: #1f1f1f;
  --muted: #6a6a6a;
  --accent: #2c4a7c;
  --accent-bg: #eef2fa;
  --border: #e0e0e0;
  --serif: Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  color: var(--fg);
  background: var(--bg);
}

header { position: sticky; top: 0; background: rgba(255,255,255,0.95); border-bottom: 1px solid var(--border); z-index: 100; }

.nav { max-width: 1024px; margin: 0 auto; padding: 14px 20px; display: flex; align-items: center; justify-content: space-between; }
.brand { font-weight: 700; font-family: var(--serif); text-decoration: none; color: var(--fg); font-size: 18px; }
.nav-links a { text-decoration: none; color: var(--fg); margin-left: 16px; font-size: 15px; }
.nav-links a:hover { color: var(--accent); }
.cta-mini { background: var(--accent); color: #fff !important; padding: 6px 14px; border-radius: 4px; }
.cta-mini:hover { background: #1b2f54; }

main { max-width: 1024px; margin: 0 auto; padding: 0 20px; }

.hero {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  padding: 64px 0 56px;
  align-items: center;
}
.hero h1 { font-family: var(--serif); font-size: 40px; line-height: 1.2; margin: 0 0 16px; }
.hero .sub { font-size: 19px; color: var(--muted); margin: 0 0 14px; }
.hero .hook { font-style: italic; color: var(--accent); font-size: 20px; margin: 0 0 22px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 14px; }
.trust { font-size: 13px; color: var(--muted); margin: 0; }

.hero-image { text-align: center; }
.hero-image img {
  max-width: 100%;
  height: auto;
  box-shadow: 12px 14px 28px rgba(0,0,0,0.14);
  border-radius: 2px;
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  border: 1px solid transparent;
  transition: background 150ms, border 150ms;
}
.btn-large { padding: 16px 32px; font-size: 18px; }
.cta-primary { background: var(--accent); color: #fff; }
.cta-primary:hover { background: #1b2f54; }
.cta-secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.cta-secondary:hover { background: var(--accent-bg); }

.section { padding: 56px 0; border-top: 1px solid var(--border); }
.section h2 { font-family: var(--serif); font-size: 28px; margin: 0 0 18px; }
.section h3 { font-size: 18px; margin: 12px 0 6px; }

.chapter-list { padding-left: 22px; }
.chapter-list li { margin-bottom: 10px; }

.file-table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 15px; }
.file-table th, .file-table td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; }
.file-table th { background: var(--accent-bg); }

.author blockquote {
  border-left: 4px solid var(--accent);
  margin: 18px 0;
  padding: 6px 18px;
  background: var(--accent-bg);
  font-style: italic;
  color: var(--muted);
}

.faq-item { margin-bottom: 18px; }

.buy { text-align: center; padding: 80px 0; background: var(--accent-bg); margin: 56px -20px 0; padding-left: 20px; padding-right: 20px; }
.buy h2 { margin-bottom: 12px; }
.checkout-trust { margin-top: 18px; font-size: 14px; color: var(--muted); }

footer { max-width: 1024px; margin: 56px auto 0; padding: 24px 20px; border-top: 1px solid var(--border); font-size: 14px; color: var(--muted); text-align: center; }
footer a { color: var(--accent); text-decoration: none; margin: 0 6px; }
footer .tagline { margin-top: 18px; font-style: italic; max-width: 600px; margin-left: auto; margin-right: auto; }

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; gap: 28px; padding: 32px 0 40px; text-align: center; }
  .hero h1 { font-size: 30px; }
  .hero-cta { justify-content: center; }
  .nav-links { display: none; }
  .section { padding: 40px 0; }
  .section h2 { font-size: 22px; }
  .buy { margin: 40px -20px 0; padding: 56px 20px; }
}