:root {
  --navy: #0A1F44;
  --navy-deep: #06142e;
  --gold: #B8963E;
  --gold-light: #d4b56a;
  --cream: #FAF8F4;
  --grey: #5a5f6b;
  --grey-light: #8a8f99;
  --white: #ffffff;
}

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

body {
  font-family: 'Source Sans Pro', Arial, sans-serif;
  color: var(--navy);
  background: var(--cream);
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: 'Playfair Display', Georgia, serif;
  color: var(--navy);
  font-weight: 700;
}

a { color: var(--navy); }

/* Header */
header {
  background: var(--white);
  border-bottom: 1px solid #e8e4da;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo-link img { height: 56px; display: block; }
nav ul {
  list-style: none;
  display: flex;
  gap: 32px;
}
nav a {
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--navy);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease;
}
nav a:hover, nav a.active { border-bottom-color: var(--gold); }

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-deep) 100%);
  color: var(--white);
  padding: 80px 24px 70px;
  text-align: center;
}
.hero h1 {
  color: var(--white);
  font-size: 42px;
  margin-bottom: 18px;
}
.hero p {
  color: #cfd6e6;
  font-size: 19px;
  max-width: 640px;
  margin: 0 auto;
}
.gold-rule {
  width: 64px;
  height: 3px;
  background: var(--gold);
  margin: 22px auto 0;
}

/* Sections */
main { max-width: 880px; margin: 0 auto; padding: 60px 24px 80px; }
.section { margin-bottom: 56px; }
.section h2 {
  font-size: 28px;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 12px;
}
.section h2::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 48px; height: 3px;
  background: var(--gold);
}
.section p { font-size: 17px; color: #2c3344; margin-bottom: 16px; }

.lede {
  font-size: 19px;
  color: var(--navy);
  font-weight: 500;
}

/* Bullet highlights */
.highlights { list-style: none; margin: 24px 0; }
.highlights li {
  padding: 10px 0 10px 30px;
  position: relative;
  font-size: 17px;
  border-bottom: 1px solid #e8e4da;
}
.highlights li:last-child { border-bottom: none; }
.highlights li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--gold);
  font-weight: 700;
}

/* CTA button */
.btn {
  display: inline-block;
  background: var(--navy);
  color: var(--white);
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.03em;
  padding: 15px 34px;
  border-radius: 3px;
  border: 2px solid var(--navy);
  transition: all 0.2s ease;
  cursor: pointer;
}
.btn:hover { background: var(--navy-deep); }
.btn-gold { background: var(--gold); border-color: var(--gold); color: var(--navy); }
.btn-gold:hover { background: var(--gold-light); border-color: var(--gold-light); }

/* Forms */
.contact-box {
  background: var(--white);
  border: 1px solid #e8e4da;
  border-radius: 6px;
  padding: 36px;
  margin-top: 16px;
}
.contact-box h3 { font-size: 22px; margin-bottom: 6px; }
.contact-box .sub { color: var(--grey); font-size: 15px; margin-bottom: 22px; }
form .field { margin-bottom: 16px; }
form label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--navy);
}
form input, form textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid #cfd0d6;
  border-radius: 4px;
  font-family: inherit;
  font-size: 15px;
  background: var(--cream);
}
form input:focus, form textarea:focus {
  outline: none;
  border-color: var(--gold);
  background: var(--white);
}
.legal-note { font-size: 12.5px; color: var(--grey-light); margin-top: 14px; }

/* Books page */
.book-card {
  background: var(--white);
  border: 1px solid #e8e4da;
  border-left: 4px solid var(--gold);
  border-radius: 4px;
  padding: 24px 28px;
  margin-bottom: 18px;
}
.book-card .num {
  display: inline-block;
  color: var(--gold);
  font-family: 'Playfair Display', Georgia, serif;
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 6px;
}
.book-card h3 { font-size: 21px; margin-bottom: 4px; }
.book-card .author { color: var(--grey); font-style: italic; font-size: 14.5px; margin-bottom: 12px; }
.book-card p { font-size: 16px; margin-bottom: 12px; color: #2c3344; }
.book-card .amazon-link {
  font-size: 14px;
  font-weight: 700;
  color: var(--navy);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
}

/* Footer */
footer {
  background: var(--navy);
  color: #b9c1d4;
  text-align: center;
  padding: 40px 24px;
  font-size: 14px;
}
footer .footer-logo { height: 36px; margin-bottom: 14px; opacity: 0.95; }
footer .copyright { margin-top: 10px; color: #7e8aa6; font-size: 13px; }

/* Mobile */
@media (max-width: 640px) {
  .header-inner { flex-direction: column; gap: 12px; padding: 16px; }
  nav ul { gap: 18px; flex-wrap: wrap; justify-content: center; }
  .hero { padding: 56px 20px 50px; }
  .hero h1 { font-size: 30px; }
  main { padding: 40px 18px 60px; }
}