:root {
  --ink: #15171c;
  --ink-2: #1d2026;
  --ink-soft: #2a2d35;
  --accent: #b85c38;
  --accent-hover: #a14e2e;
  --accent-soft: #f3e4dc;
  --cream: #f4efe6;
  --paper: #fbf8f2;
  --muted: #6b6660;
  --line: #e6dfd3;
  --on-dark: #d8d0c4;
  --on-dark-muted: #8d867c;
  --serif-display: "Fraunces", Georgia, serif;
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Inter", system-ui, sans-serif;
  --wrap: 1080px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink-soft);
  font: 400 18px/1.65 var(--serif);
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
.wrap { width: min(var(--wrap), 100% - 40px); margin-inline: auto; }

.eyebrow {
  font: 600 12px/1.2 var(--sans);
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 18px;
}
h1, h2, h3 { font-family: var(--serif-display); font-weight: 300; color: var(--ink); margin: 0; }
h2 { font-size: clamp(30px, 4.4vw, 44px); line-height: 1.1; letter-spacing: -.01em; }
h3 { font-weight: 600; font-size: 21px; line-height: 1.3; }
p { margin: 0 0 16px; }
strong { color: var(--ink); font-weight: 600; }

/* Botón */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  background: var(--accent); color: #fff; text-decoration: none; border: 0; cursor: pointer;
  font: 600 16px/1 var(--sans); letter-spacing: .01em;
  padding: 18px 28px; border-radius: 4px;
  transition: background .2s ease, transform .2s ease;
}
.btn:hover { background: var(--accent-hover); }
.btn:active { transform: translateY(1px); }
.btn small { font-weight: 500; opacity: .85; }
.btn[disabled] { opacity: .6; cursor: wait; }

/* Barra superior */
.top {
  position: absolute; inset: 0 0 auto; z-index: 2;
  padding: 22px 0;
}
.top .wrap { display: flex; align-items: center; justify-content: space-between; }
.brand { font: 600 12px var(--sans); letter-spacing: .3em; text-transform: uppercase; color: #c9c1b4; text-decoration: none; }
.top a.link { font: 500 14px var(--sans); color: var(--on-dark); text-decoration: none; }

/* Hero */
.hero {
  background: var(--ink); color: var(--on-dark);
  position: relative; overflow: hidden;
  padding: 120px 0 96px;
}
.hero::before {
  content: ""; position: absolute; right: -220px; bottom: -320px; width: 760px; height: 760px; border-radius: 50%;
  background: radial-gradient(circle, rgba(184,92,56,.42) 0%, rgba(184,92,56,.1) 45%, rgba(184,92,56,0) 70%);
  pointer-events: none;
}
.hero .wrap { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: 64px; align-items: center; }
.hero h1 { color: #fff; font-size: clamp(42px, 6.4vw, 72px); line-height: 1.02; letter-spacing: -.02em; margin-bottom: 26px; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lead { font-size: 20px; color: var(--on-dark); max-width: 540px; margin-bottom: 34px; }
.hero .meta { margin-top: 18px; font: 500 13px var(--sans); color: var(--on-dark-muted); letter-spacing: .02em; }
.cover {
  justify-self: center; width: min(360px, 100%);
  box-shadow: 0 40px 80px -20px rgba(0,0,0,.65), 0 0 0 1px rgba(255,255,255,.06);
  border-radius: 3px; transform: rotate(-2deg);
}

/* Secciones */
section.block { padding: 96px 0; }
section.alt { background: var(--cream); }
section.dark { background: var(--ink); color: var(--on-dark); }
section.dark h2, section.dark h3 { color: #fff; }
.narrow { max-width: 720px; }
.center { text-align: center; margin-inline: auto; }
.section-head { margin-bottom: 48px; }
.section-head p:not(.eyebrow) { font-size: 19px; color: var(--muted); margin-top: 16px; }
section.dark .section-head p:not(.eyebrow) { color: var(--on-dark-muted); }

/* ¿Te suena? */
.pains { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.pains li {
  background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--accent);
  padding: 18px 22px; border-radius: 3px; font-size: 18px;
}

/* Dato */
.stat { display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: start; margin-top: 40px; }
.stat .num { font: 300 64px/1 var(--serif-display); color: var(--accent); }
.stat p { color: var(--on-dark); }
.stat .source { font: 500 13px var(--sans); color: var(--on-dark-muted); }

/* Módulos */
.parts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.part {
  background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 30px;
}
.part .tag { font: 600 11px var(--sans); letter-spacing: .22em; text-transform: uppercase; color: var(--accent); margin-bottom: 12px; display: block; }
.part h3 { margin-bottom: 12px; }
.part ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: 16px; }
.part li { margin-bottom: 6px; }
.part li::marker { color: var(--accent); }

/* Incluye */
.includes { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.include { border-top: 2px solid var(--accent); padding-top: 18px; }
.include strong { display: block; font: 600 20px var(--serif-display); margin-bottom: 6px; }
.include span { font-size: 16px; color: var(--muted); }

/* Principios */
.principles { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.principles h3 { margin-bottom: 14px; font-size: 19px; }
.principles ul { list-style: none; padding: 0; margin: 0; }
.principles li { padding: 10px 0 10px 30px; position: relative; border-bottom: 1px solid rgba(255,255,255,.08); }
.principles .yes li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-family: var(--sans); font-weight: 600; }
.principles .no li::before { content: "✕"; position: absolute; left: 0; color: var(--on-dark-muted); font-family: var(--sans); }

/* Autor */
.quote { font: 300 italic clamp(24px, 3.2vw, 32px)/1.35 var(--serif-display); color: var(--ink); margin: 0 0 24px; }
.quote-by { font: 600 12px var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--muted); }

/* Compra */
.buy { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: center; }
.buy .cover { transform: none; width: min(300px, 100%); }
.price { display: flex; align-items: baseline; gap: 12px; margin: 10px 0 6px; }
.price .amount { font: 300 64px/1 var(--serif-display); color: var(--ink); }
.price .cur { font: 600 14px var(--sans); color: var(--muted); letter-spacing: .1em; }
.checks { list-style: none; padding: 0; margin: 20px 0 28px; }
.checks li { padding: 6px 0 6px 28px; position: relative; font-size: 17px; }
.checks li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font: 600 16px var(--sans); }

form.checkout { display: grid; gap: 12px; max-width: 440px; }
form.checkout label { font: 600 13px var(--sans); color: var(--ink); letter-spacing: .02em; }
form.checkout input {
  width: 100%; font: 400 17px var(--sans); padding: 15px 16px; border: 1px solid #d6cdbf; border-radius: 4px; background: #fff; color: var(--ink);
}
form.checkout input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
form.checkout .btn { width: 100%; margin-top: 6px; }
.discreet {
  background: var(--accent-soft); border-left: 3px solid var(--accent); border-radius: 3px;
  padding: 14px 16px; margin-top: 6px;
}
.discreet-title { display: flex; align-items: center; gap: 8px; font: 600 14px var(--sans); color: var(--ink); margin: 0 0 8px; }
.discreet-title svg { color: var(--accent); flex: none; }
.discreet ul { list-style: none; margin: 0; padding: 0; }
.discreet li { position: relative; padding-left: 16px; font: 400 13.5px/1.5 var(--sans); color: var(--ink-soft); margin-bottom: 4px; }
.discreet li::before { content: "·"; position: absolute; left: 4px; color: var(--accent); font-weight: 700; }
.discreet strong { font-weight: 600; }
.fine { font: 400 13px/1.5 var(--sans); color: var(--muted); margin-top: 10px; }
.fine a { color: var(--muted); }
.form-error { font: 500 14px var(--sans); color: #a33a1f; min-height: 20px; margin: 0; }

/* FAQ */
.faq { max-width: 760px; margin-inline: auto; }
.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary {
  cursor: pointer; list-style: none; padding: 20px 36px 20px 0; position: relative;
  font: 600 19px/1.35 var(--serif-display); color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 4px; top: 16px; font: 300 28px var(--sans); color: var(--accent); transition: transform .2s ease;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--muted); padding-right: 36px; }

/* Cierre y pie */
.final { text-align: center; }
.final h2 { margin-bottom: 18px; }
.final p { color: var(--on-dark-muted); margin-bottom: 30px; }
footer { background: var(--ink-2); color: var(--on-dark-muted); padding: 40px 0; font: 400 14px/1.6 var(--sans); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 32px; justify-content: space-between; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 22px; }
footer a { color: var(--on-dark); text-decoration: none; }
footer a:hover { text-decoration: underline; }
footer .disclaimer { flex-basis: 100%; font-size: 12.5px; color: #6f695f; margin: 8px 0 0; }

/* Páginas simples (gracias, legales) */
.page-hero { background: var(--ink); color: var(--on-dark); padding: 120px 0 64px; }
.page-hero h1 { color: #fff; font-size: clamp(34px, 5vw, 52px); line-height: 1.08; }
.page-hero p { color: var(--on-dark); font-size: 19px; margin-top: 18px; max-width: 620px; }
.prose { max-width: 720px; padding: 64px 0 96px; }
.prose h2 { font-size: 26px; font-weight: 600; margin: 40px 0 12px; }
.prose ul { padding-left: 20px; }
.prose li { margin-bottom: 8px; }

@media (max-width: 860px) {
  body { font-size: 17px; }
  .hero { padding: 100px 0 72px; }
  .hero .wrap, .buy, .principles { grid-template-columns: 1fr; gap: 44px; }
  .hero .cover { width: min(260px, 70%); grid-row: 1; }
  .buy .cover { width: min(220px, 60%); justify-self: center; }
  .parts { grid-template-columns: 1fr; }
  .includes { grid-template-columns: 1fr 1fr; }
  section.block { padding: 72px 0; }
  .stat { grid-template-columns: 1fr; gap: 10px; }
}
@media (max-width: 480px) {
  .includes { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .top a.link { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}