/* DatoProtegido — sin fuentes ni servicios de terceros */
:root {
  --paper: #f7f9f8;
  --white: #ffffff;
  --ink: #13233a;
  --ink-2: #3d4c5f;
  --line: #d3dbe1;
  --tint: #e9eff1;
  --mark: #ffe45c;
  --ok: #1f7a55;
  --err: #b42318;

  --serif: Charter, "Bitstream Charter", "Iowan Old Style", "Sitka Text", Cambria, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.6rem;
  --step-3: clamp(1.9rem, 1.4rem + 2vw, 2.6rem);
  --step-4: clamp(2.3rem, 1.5rem + 3.6vw, 3.6rem);

  --wrap: 72rem;
  --gutter: clamp(1rem, 4vw, 2rem);
  --radius: 6px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 var(--step-0)/1.6 var(--sans);
}

h1, h2, h3 { font-family: var(--serif); font-weight: 700; line-height: 1.15; margin: 0 0 0.6em; text-wrap: balance; }
h1 { font-size: var(--step-4); letter-spacing: -0.01em; }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); line-height: 1.3; }
p { margin: 0 0 1em; max-width: 68ch; }
a { color: inherit; text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid #2d6cdf; outline-offset: 3px; border-radius: 2px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

.skip { position: absolute; left: -999px; top: 0; background: var(--ink); color: #fff; padding: 0.6rem 1rem; z-index: 10; }
.skip:focus { left: 1rem; }

/* Botones */
.btn {
  display: inline-block;
  background: var(--ink);
  color: #fff;
  font: 600 var(--step-0)/1.2 var(--sans);
  text-decoration: none;
  padding: 0.95rem 1.4rem;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  cursor: pointer;
  text-align: center;
}
.btn:hover { background: #22395a; border-color: #22395a; text-decoration: none; }
.btn--small { padding: 0.55rem 0.9rem; font-size: var(--step--1); }
.btn--block { display: block; width: 100%; }
.btn--light { background: var(--mark); color: var(--ink); border-color: var(--mark); }
.btn--light:hover { background: #fff0a0; border-color: #fff0a0; }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.55); }
.btn--ghost:hover { background: rgba(255,255,255,0.08); border-color: #fff; }
.link { font-weight: 600; }

/* Encabezado */
.top { border-bottom: 1px solid var(--line); background: var(--paper); }
.top__in { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 4.25rem; }
.brand { display: inline-flex; align-items: center; gap: 0.55rem; text-decoration: none; font: 700 1.2rem/1 var(--serif); }
.brand__mark { width: 1.75rem; height: 1.75rem; color: var(--ink); }
.nav { display: flex; align-items: center; gap: 1.4rem; font-size: var(--step--1); }
.nav a:not(.btn) { text-decoration: none; color: var(--ink-2); }
.nav a:not(.btn):hover { color: var(--ink); text-decoration: underline; }
@media (max-width: 720px) { .nav a:not(.btn) { display: none; } }

/* Hero */
.hero { padding: clamp(2.5rem, 6vw, 5rem) 0 clamp(3rem, 6vw, 5rem); }
.hero__grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
@media (max-width: 900px) { .hero__grid { grid-template-columns: 1fr; } }
.deadline {
  display: inline-block;
  font-size: var(--step--1);
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--ink);
  padding: 0.5rem 0.85rem;
  margin-bottom: 1.6rem;
}
.lede { font-size: var(--step-1); color: var(--ink-2); line-height: 1.55; }
.hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; margin-top: 1.8rem; }

/* Cuestionario: la hoja de trabajo */
.quiz {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  box-shadow: 0 1px 0 var(--line), 0 18px 40px -28px rgba(19, 35, 58, 0.45);
}
.quiz__title { font-size: var(--step-1); margin-bottom: 1.1rem; }
.q { border: 0; border-top: 1px solid var(--line); margin: 0; padding: 0.9rem 0; }
.q legend { padding: 0.9rem 0 0.55rem; float: left; width: 100%; font-weight: 600; line-height: 1.4; }
.q label { display: inline-flex; align-items: center; gap: 0.45rem; margin-right: 1.4rem; cursor: pointer; clear: left; }
.q input { width: 1.15rem; height: 1.15rem; accent-color: var(--ink); margin: 0; }
.quiz .btn { margin-top: 0.9rem; }
.quiz__result { margin-top: 1.2rem; padding-top: 1.1rem; border-top: 2px solid var(--ink); }
.quiz__result h3 { font-size: var(--step-1); margin-bottom: 0.4rem; }
.quiz__result ul { margin: 0.4rem 0 1rem; padding-left: 1.2rem; }
.quiz__result li { margin-bottom: 0.3rem; }
.quiz__result mark { background: var(--mark); padding: 0 0.15em; }

/* Secciones */
.section { padding: clamp(3rem, 7vw, 5.5rem) 0; border-top: 1px solid var(--line); }
.section--tint { background: var(--tint); }
.section--ink { background: var(--ink); color: #fff; border-top: 0; }
.section__intro { font-size: var(--step-1); color: var(--ink-2); line-height: 1.55; margin-bottom: 2.2rem; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
.split--narrow { grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr); }
@media (max-width: 860px) { .split, .split--narrow { grid-template-columns: 1fr; } }

/* Casos */
.cases { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 clamp(2rem, 5vw, 4rem); margin: 0 0 2rem; }
@media (max-width: 720px) { .cases { grid-template-columns: 1fr; } }
.case { border-top: 1px solid var(--line); padding: 1.1rem 0 1.2rem; }
.case dt { font: 700 var(--step-1)/1.3 var(--serif); margin-bottom: 0.3rem; }
.case dd { margin: 0; color: var(--ink-2); }
.fine { font-size: var(--step--1); color: var(--ink-2); border-left: 4px solid var(--mark); padding-left: 0.9rem; }

/* Listas con visto bueno */
.ticks { list-style: none; padding: 0; margin: 1.2rem 0 1.6rem; }
.ticks li { position: relative; padding-left: 1.7rem; margin-bottom: 0.55rem; }
.ticks li::before {
  content: ""; position: absolute; left: 0.1rem; top: 0.42em; width: 0.95rem; height: 0.55rem;
  border-left: 2.5px solid var(--ok); border-bottom: 2.5px solid var(--ok); transform: rotate(-45deg);
}
.ticks--light li::before { border-color: var(--mark); }

/* Formulario */
.signup { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.25rem, 3vw, 1.75rem); }
.signup label:not(.check) { display: block; font-weight: 600; margin: 0 0 0.35rem; }
.signup input[type="text"], .signup input[type="email"] {
  width: 100%; font: inherit; color: var(--ink); background: #fff;
  border: 1.5px solid #9aa8b5; border-radius: var(--radius); padding: 0.75rem 0.85rem; margin-bottom: 1.1rem;
}
.signup input[aria-invalid="true"] { border-color: var(--err); margin-bottom: 0.35rem; }
.field-error { color: var(--err); font-size: var(--step--1); margin: 0 0 1rem; }
.check { display: flex; gap: 0.65rem; align-items: flex-start; font-size: var(--step--1); line-height: 1.5; margin-bottom: 1.3rem; cursor: pointer; }
.check input { width: 1.15rem; height: 1.15rem; margin: 0.15rem 0 0; flex: none; accent-color: var(--ink); }
.legal-note { font-size: 0.8125rem; color: var(--ink-2); margin: 1rem 0 0; line-height: 1.5; }
.signup__ok { margin: 1rem 0 0; padding: 0.8rem 0.9rem; background: #e6f4ed; border-left: 4px solid var(--ok); }

/* Kit */
.kit { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
@media (max-width: 900px) { .kit { grid-template-columns: 1fr; } }
.kit__list { list-style: none; counter-reset: plantilla; padding: 0; margin: 0; }
.kit__list li { counter-increment: plantilla; position: relative; padding: 1.1rem 0 1.1rem 3.6rem; border-top: 1px solid var(--line); }
.kit__list li::before {
  content: counter(plantilla); position: absolute; left: 0; top: 1.05rem;
  width: 2.4rem; height: 2.4rem; display: grid; place-items: center;
  font: 700 1.15rem/1 var(--serif); border: 1.5px solid var(--ink); border-radius: 50%;
}
.kit__list h3 { margin-bottom: 0.25rem; }
.kit__list p { margin: 0; color: var(--ink-2); }

.sheet { margin: 0; position: sticky; top: 1.5rem; }
.sheet__page {
  background: #fff; border: 1px solid var(--line); padding: 1.6rem 1.5rem 2rem;
  font-size: 0.9rem; line-height: 1.55;
  box-shadow: 6px 6px 0 var(--tint), 7px 7px 0 var(--line);
}
.sheet__page p { margin: 0 0 0.55rem; }
.sheet__h { font: 700 1.15rem/1.3 var(--serif); color: #1f4e79; margin-bottom: 0.9rem !important; }
.sheet__s { font-weight: 700; color: #1f4e79; margin-top: 1rem !important; }
.sheet mark { background: var(--mark); font-weight: 700; padding: 0 0.1em; }
.sheet figcaption { font-size: var(--step--1); color: var(--ink-2); margin-top: 1.1rem; }
@media (max-width: 900px) { .sheet { position: static; } }

/* Precio */
.plans { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: clamp(1.25rem, 3vw, 2rem); margin-top: 1rem; }
@media (max-width: 800px) { .plans { grid-template-columns: 1fr; } }
.plan { border: 1px solid rgba(255,255,255,0.25); border-radius: var(--radius); padding: clamp(1.4rem, 3vw, 2rem); }
.plan--main { border: 2px solid var(--mark); }
.plan h3 { font-size: var(--step-2); }
.price { margin: 0 0 0.2rem; display: flex; align-items: baseline; gap: 0.8rem; }
.price__now { font: 700 clamp(2.4rem, 2rem + 2vw, 3.2rem)/1 var(--serif); }
.price__was { color: rgba(255,255,255,0.6); font-size: var(--step-1); }
.price__note { color: rgba(255,255,255,0.75); font-size: var(--step--1); }

/* FAQ */
.faq > * { max-width: 52rem; }
.faq details { border-top: 1px solid #c4ced6; }
.faq details:last-of-type { border-bottom: 1px solid #c4ced6; }
.faq summary { cursor: pointer; list-style: none; padding: 1.1rem 2rem 1.1rem 0; font-weight: 600; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0.3rem; top: 0.95rem; font: 400 1.5rem/1 var(--sans); }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--ink-2); padding-right: 2rem; }

/* Pie */
.foot { background: var(--ink); color: rgba(255,255,255,0.85); padding: 2.5rem 0; font-size: var(--step--1); border-top: 1px solid rgba(255,255,255,0.15); }
.foot__in { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 1.5rem; }
.foot strong { color: #fff; font-family: var(--serif); font-size: 1.05rem; }
.foot__legal { color: rgba(255,255,255,0.6); }
@media (max-width: 720px) { .foot__in { grid-template-columns: 1fr; } }

/* Página de texto legal */
.doc { padding: clamp(2.5rem, 6vw, 4rem) 0 4rem; }
.doc .wrap { max-width: 46rem; }
.doc h2 { font-size: var(--step-2); margin-top: 2.2rem; }
.doc table { width: 100%; border-collapse: collapse; margin: 0.5rem 0 1.5rem; font-size: var(--step--1); }
.doc th, .doc td { text-align: left; vertical-align: top; border: 1px solid var(--line); padding: 0.6rem 0.7rem; }
.doc th { background: var(--tint); }
.doc .updated { color: var(--ink-2); font-size: var(--step--1); }

.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.signup__err { margin: 1rem 0 0; padding: 0.8rem 0.9rem; background: #fdecea; border-left: 4px solid var(--err); }