:root {
  --bg: #f8f6f2;
  --card: #ffffff;
  --text: #1a1a1a;
  --muted: #5c5c5c;
  --accent: #8b6914;
  --accent-hover: #6d5210;
  --border: #e5e1d8;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 0;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.3rem;
  font-weight: 650;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.3px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1.8rem;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--accent);
}

/* Buttons */
.btn {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 0.9rem 1.9rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: background 0.2s;
}

.btn:hover {
  background: var(--accent-hover);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  margin-left: 1rem;
}

.btn-outline:hover {
  background: var(--accent);
  color: white;
}

/* Hero */
.hero {
  padding: 5.5rem 0 4.5rem;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 650;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  letter-spacing: -0.8px;
}

.hero p {
  font-size: 1.2rem;
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto 2.5rem;
}

/* Sections */
.section {
  padding: 3.5rem 0 5rem;
}

.section-title {
  font-size: 1.6rem;
  margin-bottom: 2.25rem;
  text-align: center;
  font-weight: 600;
}

/* Book cards */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 1.75rem;
}

.book-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.85rem;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.book-card:hover {
  border-color: #d4c9a8;
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}

.book-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.35rem;
  font-weight: 600;
}

.book-card .meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.book-card p {
  color: var(--muted);
  font-size: 0.97rem;
  margin-bottom: 1.5rem;
}

.card-actions a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  margin-right: 1.4rem;
  font-size: 0.95rem;
}

.card-actions a:hover {
  text-decoration: underline;
}

/* CTA Box */
.cta-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 3rem;
  text-align: center;
  margin-top: 3.5rem;
}

.cta-box h2 {
  font-size: 1.65rem;
  margin-bottom: 0.9rem;
  font-weight: 600;
}

.cta-box p {
  color: var(--muted);
  max-width: 540px;
  margin: 0 auto 1.75rem;
  font-size: 1.05rem;
}

/* About page */
.content {
  padding: 4.5rem 0 5rem;
}

.content .container {
  max-width: 680px;
}

.content h1 {
  font-size: 2.4rem;
  margin-bottom: 1.75rem;
  font-weight: 650;
  letter-spacing: -0.5px;
}

.content p {
  margin-bottom: 1.4rem;
  color: var(--muted);
  font-size: 1.12rem;
}

.highlight {
  color: var(--text);
}

/* Book page specific */
.book-header {
  padding: 3.5rem 0 1.5rem;
}

.book-header h1 {
  font-size: 2.5rem;
  font-weight: 650;
  margin-bottom: 0.4rem;
  letter-spacing: -0.6px;
}

.book-header .meta {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 1.6rem;
}

.intro {
  font-size: 1.15rem;
  color: var(--muted);
  margin-bottom: 2rem;
}

.download-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.4rem 1.5rem;
  margin-bottom: 3rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.analysis {
  padding-bottom: 2rem;
  max-width: 720px;
  margin: 0 auto;
}

.analysis h2 {
  font-size: 1.45rem;
  margin: 2.75rem 0 1.2rem;
  color: var(--text);
  font-weight: 650;
}

.analysis p {
  margin-bottom: 1.3rem;
  color: var(--muted);
  font-size: 1.08rem;
}

.analysis strong {
  color: var(--text);
}

.cta-final {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem;
  text-align: center;
  margin: 3rem 0 4rem;
}

.cta-final h2 {
  font-size: 1.45rem;
  margin-bottom: 0.9rem;
  font-weight: 650;
}

.cta-final p {
  color: var(--muted);
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
}

/* Footer */
footer {
  background: var(--card);
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 600px) {
  .hero h1 {
    font-size: 2.2rem;
  }
  .btn-outline {
    margin-left: 0;
    margin-top: 0.9rem;
    display: inline-block;
  }
  .book-header h1 {
    font-size: 2rem;
  }
}