:root {
  --bg: #141210;
  --bg-alt: #1b1815;
  --line: #2f2a24;
  --cream: #efe7dc;
  --cream-soft: #cfc5b7;
  --muted: #8a8073;
  --gold: #C9A45C;
  --gold-dark: #a8823c;
  --serif: "Playfair Display", "Liberation Serif", Georgia, serif;
  --sans: "Inter", "DejaVu Sans", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--cream); font-family: var(--sans); font-size: 17px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--gold); }

.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; margin-left: auto; margin-right: auto; }
.center { text-align: center; }

/* Cabecera */
.top { position: sticky; top: 0; z-index: 10; background: rgba(20, 18, 16, .92); backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-family: var(--sans); font-weight: 700; letter-spacing: .12em; color: var(--cream); text-decoration: none; font-size: 16px; }
.logo span { font-family: var(--serif); font-style: italic; font-weight: 400; color: var(--gold); letter-spacing: 0; margin: 0 2px; text-transform: lowercase; }
nav a { color: var(--cream-soft); text-decoration: none; font-size: 14px; margin-left: 24px; }
nav a:hover { color: var(--gold); }

/* Tipografía */
.kicker { font-size: 12px; letter-spacing: .3em; text-transform: uppercase; color: var(--gold); font-weight: 600; margin-bottom: 14px; }
.kicker.muted { color: var(--muted); }
h1, h2, h3, h4 { font-family: var(--serif); line-height: 1.15; color: #f6efe4; }
h1 { font-size: clamp(38px, 6vw, 64px); margin-bottom: 20px; }
h1 span, .gold { color: var(--gold); }
h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 18px; }
h3 { font-size: 24px; margin-bottom: 16px; }
h4 { font-size: 19px; margin-bottom: 6px; }
p { margin-bottom: 14px; color: var(--cream-soft); }
.lead { font-size: 20px; max-width: 540px; }
.small { font-size: 13px; color: var(--muted); margin-top: 10px; }
.note { font-family: var(--serif); font-style: italic; font-size: 20px; color: var(--cream); }

/* Botones */
.ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.ctas.center { justify-content: center; }
.btn { display: inline-block; text-decoration: none; font-weight: 700; font-size: 14px; letter-spacing: .12em; text-transform: uppercase; padding: 16px 26px; border-radius: 2px; transition: transform .15s, background .15s; text-align: center; }
.btn:hover { transform: translateY(-2px); }
.btn-gold { background: var(--gold); color: #141210; }
.btn-gold:hover { background: #d8b46d; }
.btn-line { border: 1px solid var(--gold); color: var(--gold); }
.btn-line:hover { background: rgba(201, 164, 92, .1); }
.btn-big { font-size: 16px; padding: 20px 36px; }

/* Secciones */
.block { padding: 88px 0; border-top: 1px solid var(--line); }
.block.alt { background: var(--bg-alt); }
.top-gap { margin-top: 56px; }

.hero { padding: 72px 0 88px; }
.hero-in { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: center; }
.hero-img img { max-width: 380px; margin-left: auto; box-shadow: 0 30px 60px rgba(0, 0, 0, .6); border: 1px solid var(--line); }

.split { display: grid; grid-template-columns: 320px 1fr; gap: 48px; align-items: center; }
.split-img img { box-shadow: 0 24px 48px rgba(0, 0, 0, .55); border: 1px solid var(--line); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }

/* Listas */
.checks, .crosses { list-style: none; }
.checks li, .crosses li { position: relative; padding-left: 30px; margin-bottom: 12px; color: var(--cream); }
.checks li::before { content: "—"; position: absolute; left: 0; color: var(--gold); font-weight: 700; }
.crosses li::before { content: "✕"; position: absolute; left: 2px; color: var(--muted); }
.punch { font-family: var(--serif); font-size: 26px; color: var(--cream); margin-top: 28px; }
.punch span { color: var(--gold); }

/* Tarjetas de bloques */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.card { border: 1px solid var(--line); padding: 22px 20px; background: var(--bg); }
.card span { font-family: var(--serif); font-size: 30px; color: var(--gold); display: block; margin-bottom: 8px; }
.card p { font-size: 14px; margin: 0; }

/* Muestra */
.sample { max-width: 720px; margin: 0 auto; border: 1px solid var(--line); background: var(--bg); padding: 36px; }
.sample-meta { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 1px solid var(--line); padding-bottom: 12px; margin-bottom: 16px; }
.sample-meta .num { font-weight: 700; color: var(--gold); font-size: 34px; line-height: 1; }
.sample-meta .lvl { font-size: 11px; letter-spacing: .25em; text-transform: uppercase; color: var(--cream-soft); border: 1px solid #5a5248; padding: 4px 10px; }
.sample h4 { font-size: 26px; margin-bottom: 18px; }
.sample-label { font-size: 11px; letter-spacing: .25em; text-transform: uppercase; color: var(--gold); font-weight: 600; margin: 18px 0 6px; }
.sample-rule { border-top: 1px solid var(--gold); border-bottom: 1px solid var(--gold); text-align: center; padding: 20px; margin-top: 26px; }
.sample-rule .sample-label { color: var(--muted); margin-top: 0; }
.sample-rule p { color: var(--gold); font-family: var(--serif); font-weight: 700; font-size: 20px; margin: 0; }

/* Compra */
.buy { text-align: center; margin-top: 56px; }
.price { font-family: var(--serif); font-size: 44px; color: var(--cream); margin-bottom: 18px; }

/* Tabla */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; margin-top: 10px; }
th, td { padding: 14px 12px; border-bottom: 1px solid var(--line); text-align: center; color: var(--cream); }
th { font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--gold); }
td:first-child, th:first-child { text-align: left; }
td:last-child { color: var(--gold); font-weight: 700; }

/* Preguntas */
details { border-bottom: 1px solid var(--line); padding: 18px 0; }
summary { cursor: pointer; font-weight: 600; color: var(--cream); list-style: none; position: relative; padding-right: 30px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; color: var(--gold); font-size: 22px; line-height: 1; }
details[open] summary::after { content: "−"; }
details p { margin: 12px 0 0; }

/* Cierre */
.final { background: linear-gradient(180deg, var(--bg) 0%, #0d0c0a 100%); }
.closing { font-family: var(--serif); font-size: clamp(24px, 3.4vw, 34px); color: var(--cream); line-height: 1.3; }
.closing span { color: var(--gold); }

/* Pie */
footer { border-top: 1px solid var(--line); padding: 48px 0; text-align: center; }
footer .logo { display: inline-block; margin-bottom: 16px; }
footer p { max-width: 640px; margin: 10px auto 0; }

/* Móvil */
@media (max-width: 860px) {
  .hero-in, .split, .two { grid-template-columns: 1fr; }
  .hero-img img { margin: 0 auto; max-width: 280px; }
  .split-img img { max-width: 260px; margin: 0 auto; }
  .cards { grid-template-columns: 1fr 1fr; }
  nav a { margin-left: 14px; font-size: 13px; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  nav { display: none; }
  .block { padding: 64px 0; }
  .cards { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .sample { padding: 24px 18px; }
  .logo { font-size: 14px; }
}

/* Página de inicio (marca y catálogo) */
.home-hero { padding: 96px 0 104px; }
.brand-big { font-family: var(--sans); font-weight: 700; letter-spacing: .14em; font-size: clamp(22px, 4vw, 34px); color: var(--cream); margin-bottom: 28px; }
.brand-big span { font-family: var(--serif); font-style: italic; font-weight: 400; color: var(--gold); letter-spacing: 0; margin: 0 4px; }
.center-lead { margin: 0 auto; }
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 36px; }
.pillar { border: 1px solid var(--line); background: var(--bg); padding: 28px 24px; }
.pillar span { font-weight: 700; color: var(--gold); font-size: 14px; letter-spacing: .2em; display: block; margin-bottom: 10px; }
.pillar p { margin: 0; font-size: 15px; }
.catalog { display: grid; gap: 28px; margin-top: 40px; }
.book { display: grid; grid-template-columns: 240px 1fr; gap: 40px; align-items: center; border: 1px solid var(--line); background: var(--bg-alt); padding: 32px; }
.book-cover img { box-shadow: 0 20px 40px rgba(0, 0, 0, .55); border: 1px solid var(--line); }
.book h3 { font-size: 30px; margin-bottom: 4px; }
.book-sub { color: var(--gold); font-family: var(--serif); font-style: italic; font-size: 18px; }
.book .ctas { margin-top: 20px; }
.book.soon { opacity: .75; }
.soon-cover { aspect-ratio: 210 / 297; border: 1px dashed #5a5248; display: flex; align-items: center; justify-content: center; }
.soon-cover span { font-size: 12px; letter-spacing: .3em; text-transform: uppercase; color: var(--muted); }
@media (max-width: 860px) {
  .pillars { grid-template-columns: 1fr; }
  .book { grid-template-columns: 1fr; padding: 24px; }
  .book-cover img, .soon-cover { max-width: 220px; margin: 0 auto; }
}
.price-note { display: block; font-family: var(--sans); font-size: 12px; letter-spacing: .25em; text-transform: uppercase; color: var(--muted); margin-top: 4px; }

/* Barra fija de compra en móvil */
.mobile-buy { display: none; }
@media (max-width: 860px) {
  .mobile-buy { display: flex; align-items: center; justify-content: space-between; gap: 12px; position: fixed; left: 0; right: 0; bottom: 0; z-index: 20; background: rgba(20, 18, 16, .97); border-top: 1px solid var(--gold); padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); }
  .mobile-buy-text { display: flex; flex-direction: column; line-height: 1.2; }
  .mobile-buy-text strong { color: var(--cream); font-size: 14px; }
  .mobile-buy-text span { color: var(--gold); font-size: 13px; }
  .mobile-buy .btn { width: auto; padding: 12px 22px; flex: none; }
  body:has(.mobile-buy) { padding-bottom: 76px; }
}

/* Galería "Mira por dentro" */
.gallery-hint { margin-top: -6px; margin-bottom: 22px; }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: 900px; margin: 0 auto; }
.gallery a { display: block; text-decoration: none; }
.gallery img { border: 1px solid var(--line); box-shadow: 0 18px 36px rgba(0, 0, 0, .5); transition: transform .2s; }
.gallery a:hover img { transform: translateY(-4px); }
.gallery span { display: block; text-align: center; font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--gold); margin-top: 12px; }
@media (max-width: 700px) {
  .gallery { grid-template-columns: 1fr; max-width: 300px; }
}
.book.featured { border-color: var(--gold); }
section[id] { scroll-margin-top: 72px; }