:root {
  --navy: #003366;
  --navy-dark: #002244;
  --emerald: #00B67A;
  --emerald-dark: #009565;
  --bg: #F8F9FA;
  --ink: #1a2330;
  --muted: #5a6673;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

.container { max-width: 1000px; margin: 0 auto; padding: 0 24px; }
.container.narrow { max-width: 640px; }

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-dark) 100%);
  color: #fff;
  padding: 64px 0 72px;
}
.hero-slim { padding: 48px 0; text-align: center; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: center;
}
.kicker {
  display: inline-block;
  background: var(--emerald);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.15; margin-bottom: 14px; }
.hero .sub { font-size: clamp(1.05rem, 2.5vw, 1.3rem); opacity: 0.95; margin-bottom: 10px; }
.hero .tagline { font-style: italic; color: #9fd9c3; margin-bottom: 26px; }
.from-book { margin-top: 16px; font-size: 0.9rem; opacity: 0.8; }
.hero-cover img {
  width: 100%;
  max-width: 280px;
  border-radius: 6px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.45);
  display: block;
  margin: 0 auto;
}

/* Buttons */
.btn {
  display: inline-block;
  background: var(--emerald);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 1.05rem;
  transition: background 0.15s;
}
.btn:hover { background: var(--emerald-dark); }

/* Benefits */
.benefits { padding: 64px 0 48px; }
.benefits h2, .signup h2 {
  text-align: center;
  color: var(--navy);
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: 32px;
}
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.card {
  background: #fff;
  border-radius: 10px;
  padding: 28px 24px;
  box-shadow: 0 2px 10px rgba(0,51,102,0.08);
  border-top: 4px solid var(--emerald);
}
.card-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--emerald);
  line-height: 1;
  margin-bottom: 10px;
}
.card h3 { color: var(--navy); margin-bottom: 8px; font-size: 1.1rem; }
.card p { font-size: 0.95rem; color: var(--muted); }

.checks {
  list-style: none;
  max-width: 640px;
  margin: 0 auto;
}
.checks li {
  padding: 8px 0 8px 34px;
  position: relative;
  font-size: 1.02rem;
}
.checks li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 6px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--emerald);
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Signup */
.signup { padding: 48px 0 72px; }
.signup > .container { text-align: center; }
.signup p { color: var(--muted); }
form { margin: 24px 0 8px; }
.row { display: flex; gap: 10px; }
input[type="email"] {
  flex: 1;
  padding: 14px 16px;
  font-size: 1rem;
  border: 2px solid #ccd4dc;
  border-radius: 8px;
  outline: none;
}
input[type="email"]:focus { border-color: var(--emerald); }
button[type="submit"] {
  background: var(--emerald);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  padding: 14px 26px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s;
}
button[type="submit"]:hover { background: var(--emerald-dark); }
button[type="submit"]:disabled { opacity: 0.6; cursor: wait; }
.hp { position: absolute; left: -9999px; height: 0; width: 0; opacity: 0; }
.error { color: #c0392b; margin-top: 10px; font-weight: 600; }
.success {
  background: #eafaf3;
  border: 2px solid var(--emerald);
  border-radius: 10px;
  padding: 24px;
  margin-top: 24px;
  text-align: left;
}
.success h3 { color: var(--navy); margin-bottom: 8px; }
.success p { color: var(--ink); }
.success p + p { margin-top: 10px; }
.privacy { font-size: 0.85rem; margin-top: 18px; color: var(--muted); }
.privacy a { color: var(--navy); }

/* Book CTA */
.book-cta {
  background: #fff;
  border-top: 1px solid #e4e9ee;
  padding: 56px 0;
}
.book-grid {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 36px;
  align-items: center;
}
.book-cta-cover {
  width: 130px;
  border-radius: 4px;
  box-shadow: 0 6px 18px rgba(0,51,102,0.25);
}
.book-cta-copy h2 {
  color: var(--navy);
  margin-bottom: 10px;
  font-size: 1.5rem;
  text-align: left;
}
.book-cta-copy p { color: var(--muted); margin-bottom: 18px; max-width: 52ch; }
.book-cta-qr { text-align: center; }
.book-cta-qr img {
  display: block;
  width: 150px;
  height: 150px;
  border: 1px solid #e4e9ee;
  border-radius: 8px;
  padding: 6px;
  background: #fff;
  margin: 0 auto 8px;
}
.book-cta-qr p { font-size: 0.8rem; color: var(--muted); }
@media (max-width: 720px) {
  .book-grid { grid-template-columns: 1fr; text-align: center; }
  .book-cta-cover { margin: 0 auto; }
  .book-cta-copy h2 { text-align: center; }
  .book-cta-copy p { margin-left: auto; margin-right: auto; }
}

/* Top nav */
.nav {
  background: var(--navy-dark);
  padding: 14px 0;
}
.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav-brand {
  color: #fff;
  font-weight: 800;
  text-decoration: none;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}
.nav-brand span { color: var(--emerald); }
.nav-links { display: flex; gap: 20px; }
.nav-links a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-size: 0.92rem;
}
.nav-links a:hover { color: #fff; }

/* Hub book grid */
.hub-books { padding: 56px 0 72px; }
.hub-books h2 {
  text-align: center;
  color: var(--navy);
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: 36px;
}
.book-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.book-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0,51,102,0.10);
  padding: 28px 24px 26px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.15s, box-shadow 0.15s;
}
.book-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,51,102,0.18);
}
.book-card img {
  width: 100%;
  max-width: 200px;
  border-radius: 5px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.25);
  margin-bottom: 18px;
}
.book-card h3 { color: var(--navy); font-size: 1.12rem; margin-bottom: 6px; }
.book-card p { font-size: 0.92rem; color: var(--muted); margin-bottom: 14px; flex: 1; }
.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.badge-live { background: #eafaf3; color: var(--emerald-dark); }
.badge-soon { background: #fff4e0; color: #a86500; }
.badge-bonus { background: var(--emerald); color: #fff; }
.book-card .cta { color: var(--emerald-dark); font-weight: 700; font-size: 0.95rem; }

/* Book page extras */
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.btn-ghost {
  display: inline-block;
  border: 2px solid rgba(255,255,255,0.5);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.15s, background 0.15s;
}
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,0.08); }
.soon-note {
  background: #fff;
  border-top: 1px solid #e4e9ee;
  padding: 44px 0;
  text-align: center;
}
.soon-note p { color: var(--muted); max-width: 60ch; margin: 0 auto; }
.soon-note a { color: var(--navy); font-weight: 600; }
@media (max-width: 860px) {
  .book-cards { grid-template-columns: 1fr; max-width: 380px; margin: 0 auto; }
}

/* Footer */
footer {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.75);
  padding: 24px 0;
  text-align: center;
  font-size: 0.9rem;
}
footer a { color: #9fd9c3; }

/* Mobile */
@media (max-width: 720px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-cover { order: -1; }
  .hero-cover img { max-width: 180px; }
  .cards { grid-template-columns: 1fr; }
  .row { flex-direction: column; }
  button[type="submit"] { width: 100%; }
}