:root {
  --bg: #f5f7f3;
  --bg-dark: #14231c;
  --card: #ffffff;
  --text: #17231d;
  --text-soft: #4a5a50;
  --accent: #3a7a4e;
  --accent-2: #7ba464;
  --line: #d8e3d9;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
.container { width: min(1100px, 92vw); margin: 0 auto; }
.topbar { background: #0d1712; color: #dce8df; padding: .7rem 0; font-size: .95rem; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.language-switcher { display: flex; gap: .5rem; flex-wrap: wrap; }
.lang-btn {
  border: 1px solid #2d4538; background: transparent; color: #dce8df; padding: .4rem .75rem; border-radius: 999px;
  cursor: pointer; font-weight: 600;
}
.lang-btn.active, .lang-btn:hover { background: var(--accent); border-color: var(--accent); }
.hero { display: grid; grid-template-columns: 1.2fr .8fr; gap: 2rem; align-items: center; padding: 3.5rem 0; }
.eyebrow { color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: .08em; margin: 0 0 .5rem; }
h1, h2, h3 { font-family: "Playfair Display", serif; line-height: 1.2; margin: 0 0 .8rem; }
h1 { font-size: clamp(2rem, 5vw, 3.3rem); }
.subtitle { font-size: 1.08rem; color: var(--text-soft); }
.edition { font-weight: 700; }
.btn {
  display: inline-block; margin-top: 1.2rem; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff;
  text-decoration: none; padding: .95rem 1.4rem; border-radius: 12px; font-weight: 700; box-shadow: 0 8px 20px rgba(32,77,51,.28);
}
.book-wrap { display: grid; place-items: center; }
.book-3d { position: relative; width: 250px; height: 340px; transform: rotateY(-24deg) rotateX(8deg); perspective: 1000px; }
.book-cover {
  position: absolute; inset: 0; background: linear-gradient(165deg, #1d3b2e, #103025); color: #eaf2eb; border-radius: 8px;
  border: 2px solid #4d795f; padding: 1.2rem; display: flex; flex-direction: column; justify-content: center;
  box-shadow: 26px 26px 40px rgba(0,0,0,.25);
}
.book-cover h2 { font-size: 1.7rem; margin: 0 0 .5rem; }
.book-cover p { margin: 0; color: #cde0d3; }
.book-leaf { font-size: 2.2rem; margin-bottom: .8rem; }
.book-spine {
  position: absolute; left: -20px; top: 10px; width: 20px; height: 320px; background: #234a38; border-radius: 5px 0 0 5px;
  transform: skewY(-8deg);
}
.book-shadow { position: absolute; right: -50px; bottom: -34px; width: 230px; height: 36px; background: rgba(0,0,0,.25); filter: blur(8px); }
.section { padding: 3.5rem 0; }
.section-dark { background: var(--bg-dark); color: #ecf5ee; }
.section-dark .list li, .section-dark p, .section-dark blockquote { color: #d4e2d8; }
.list { padding-left: 1.2rem; margin: .8rem 0 1.4rem; }
.checked { list-style: none; padding-left: 0; }
.checked li::before { content: "✓ "; color: #8edd9a; font-weight: 700; }
blockquote { border-left: 4px solid var(--accent-2); margin: 1rem 0 0; padding-left: 1rem; font-style: italic; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 1rem; }
.card h4 { margin: 0 0 .4rem; font-size: 1.05rem; }
.two-col { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.testimonials { display: grid; gap: 1rem; }
.testimonial { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 1rem; }
.testimonial p { margin: 0 0 .5rem; }
.testimonial strong { color: var(--accent); }
.metrics { font-weight: 700; margin-top: 1rem; }
.section-offer { background: linear-gradient(180deg, #eaf2e6, #dcebd9); }
.offer-box { text-align: center; }
.price-old { text-decoration: line-through; color: #6a7a70; margin: .4rem 0; }
.price-new { font-size: 2rem; font-weight: 800; margin: .4rem 0; color: #1f5f3a; }
.secure, .guarantee { color: #3c4e43; max-width: 760px; margin: .7rem auto 0; }
.faq-item { border-bottom: 1px solid var(--line); padding: .9rem 0; }
.faq-item h4 { margin: 0 0 .35rem; }
.final-message { text-align: center; }
.footer { background: #0d1712; color: #c8d8ce; text-align: center; padding: 2rem 0; }
.footer a { color: #d8e6dc; text-decoration: none; }
.footer small { display: block; margin-top: 1rem; color: #93a89c; }

@media (max-width: 860px) {
  .hero, .two-col { grid-template-columns: 1fr; }
  .hero { text-align: center; }
  .book-3d { margin: 0 auto; transform: rotateY(-20deg) rotateX(6deg) scale(.92); }
  .topbar-inner { flex-direction: column; }
}