:root {
  --navy: #1f4e79;
  --navy-hi: #2e6ea6;
  --navy-lo: #143a5c;
  --accent: #e8710a;
  --accent-hi: #c85c00;
  --free: #0c7543;
  --free-hi: #0a5c36;
  --ink: #1b2431;
  --muted: #5b6b7b;
  --line: #e3dfd5;
  --bg: #f6f4ef;
  --card: #ffffff;
  --bg-alt: #fbf8f2;
  --bg-alt2: #f3efe6;
  --bg-alt3: #ede8dc;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(20, 40, 60, .07), 0 8px 22px rgba(20, 40, 60, .07);
}

html.tema-oscuro {
  --navy: #3c7fb5;
  --navy-hi: #6da6d2;
  --navy-lo: #102c46;
  --accent: #f08a35;
  --accent-hi: #d9741f;
  --free: #2aaa7a;
  --free-hi: #23936a;
  --ink: #e9edf1;
  --muted: #a5b4c0;
  --line: #384553;
  --bg: #171c22;
  --card: #212830;
  --bg-alt: #262d36;
  --bg-alt2: #2a313a;
  --bg-alt3: #303842;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 22px rgba(0, 0, 0, .45);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}

a { color: var(--navy-hi); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg, video { max-width: 100%; height: auto; display: block; }

.envoltura { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 20px; }

/* ---------- Cabecera ---------- */
.cabera { background: var(--navy-lo); color: #fff; }
.cabera__alta { display: flex; align-items: center; gap: 18px; padding: 14px 20px; }
.marca { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; font-size: 19px; letter-spacing: .2px; }
.marca:hover { text-decoration: none; }
.marca small { display: block; font-size: 11px; font-weight: 500; color: #a9c4dd; letter-spacing: .4px; }
.nav { display: flex; flex-wrap: wrap; gap: 4px; margin-left: auto; align-items: center; }
.nav a, .nav button {
  color: #dbe8f4; background: none; border: 0; font: inherit; font-size: 15px;
  padding: 9px 13px; border-radius: 7px; cursor: pointer;
}
.nav a:hover, .nav button:hover { background: var(--navy-hi); color: #fff; text-decoration: none; }

.nav__tema {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; padding: 0;
  background: transparent; border: 1px solid rgba(255, 255, 255, .2); border-radius: 7px;
  color: #dbe8f4; cursor: pointer; transition: background .15s, border-color .15s;
}
.nav__tema:hover { background: var(--navy-hi); border-color: var(--navy-hi); color: #fff; }
.nav__tema-icono { width: 20px; height: 20px; }

.baner { background: var(--navy); color: #cfe1f2; font-size: 14px; }
.baner__lista { display: flex; flex-wrap: wrap; gap: 6px 22px; padding: 9px 20px; }
.baner a { color: #fff; }
.baner span { color: #94b6d3; }

/* ---------- Hero ---------- */
.hero { background: linear-gradient(120deg, var(--navy-lo), var(--navy) 60%, var(--navy-hi)); color: #fff; }
.hero__rejilla { display: grid; grid-template-columns: 1.05fr .95fr; gap: 34px; align-items: center; padding: 46px 20px 50px; }
.hero h1 { font-size: 36px; line-height: 1.15; margin: 0 0 12px; }
.hero p { color: #d6e6f4; font-size: 17px; margin: 0 0 20px; }
.hero__botones { display: flex; flex-wrap: wrap; gap: 10px; }
.hero__tarjeta {
  background: var(--card); color: var(--ink); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 22px; display: grid; grid-template-columns: 92px 1fr; gap: 16px; align-items: start;
}
.hero__tarjeta h2 { margin: 0 0 4px; font-size: 21px; }
.hero__tarjeta p { color: var(--muted); font-size: 15px; margin: 0 0 12px; }
.hero__meta { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 13px; color: var(--muted); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid transparent; border-radius: 8px; padding: 10px 18px;
  font: inherit; font-size: 15px; font-weight: 600; cursor: pointer; text-align: center;
}
.btn:hover { text-decoration: none; }
.btn--descarga { background: var(--free); color: #fff; }
.btn--descarga:hover { background: var(--free-hi); }
.btn--mar { background: var(--navy); color: #fff; }
.btn--mar:hover { background: var(--navy-hi); }
.btn--acento { background: var(--accent); color: #fff; }
.btn--acento:hover { background: var(--accent-hi); }
.btn--fant { background: var(--card); color: var(--navy); border-color: var(--line); }
.btn--fant:hover { border-color: var(--navy-hi); color: var(--navy-hi); }
.btn--fant--claro { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .45); }
.btn--fant--claro:hover { background: rgba(255, 255, 255, .12); color: #fff; border-color: #fff; }
.btn--grande { padding: 13px 26px; font-size: 16px; }

/* ---------- Secciones ---------- */
.seccion { padding: 46px 0; }
.seccion--blanca { background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.seccion--calida { background: var(--bg-alt2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.seccion__titulo { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin: 0 0 8px; font-size: 26px; }
.seccion__texto { color: var(--muted); margin: 0 0 24px; max-width: 78ch; }

/* ---------- Rejilla y fichas ---------- */
.rejilla { display: grid; grid-template-columns: repeat(auto-fill, minmax(238px, 1fr)); gap: 18px; }
.ficha {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; display: flex; flex-direction: column; gap: 10px; box-shadow: var(--shadow);
}
.ficha__nombre { font-size: 17px; font-weight: 700; margin: 0; line-height: 1.3; }
.ficha__resumen { font-size: 14px; color: var(--muted); margin: 0; flex: 1; }

.icono {
  width: 54px; height: 54px; border-radius: 13px; flex: none;
  display: grid; place-items: center; color: #fff;
}
.icono svg { width: 30px; height: 30px; }
.icono--azul { background: linear-gradient(150deg, #2e6ea6, #1f4e79); }
.icono--naranja { background: linear-gradient(150deg, #f08a35, #c85c00); }
.icono--verde { background: linear-gradient(150deg, #159a63, #0a5c36); }
.icono--vino { background: linear-gradient(150deg, #a04a6b, #6d2c45); }
.icono--turquesa { background: linear-gradient(150deg, #12a0a8, #0a6c72); }
.icono--gris { background: linear-gradient(150deg, #5b6b7b, #2c3948); }

/* ---------- Pasos ---------- */
.pasos {
  list-style: none; counter-reset: paso; margin: 0 0 22px; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px;
}
.pasos li {
  counter-increment: paso; position: relative;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 18px 18px 64px; box-shadow: var(--shadow);
}
.pasos li::before {
  content: counter(paso); position: absolute; left: 18px; top: 18px;
  width: 32px; height: 32px; display: grid; place-items: center; border-radius: 50%;
  background: var(--navy); color: #fff; font-weight: 700;
}
.pasos strong { display: block; margin-bottom: 4px; }
.pasos span { color: var(--muted); font-size: 14px; }

/* ---------- Privacidad ---------- */
.privacidad { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, .6fr); gap: 24px; align-items: start; }
.privacidad p { margin-top: 0; }
.lista-check { list-style: none; padding: 0; margin: 0 0 18px; display: grid; gap: 9px; }
.lista-check li { position: relative; padding-left: 28px; color: var(--muted); }
.lista-check li::before {
  content: "✓"; position: absolute; left: 0; top: 0; width: 19px; height: 19px;
  display: grid; place-items: center; border-radius: 50%; background: var(--free);
  color: #fff; font-size: 12px; font-weight: 700;
}
.recuadro { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.recuadro--aviso { border-left: 4px solid var(--accent); background: var(--bg-alt); }
.recuadro--aviso h3 { margin-top: 0; }

/* ---------- Descarga ---------- */
.descarga {
  display: flex; align-items: center; gap: 22px; flex-wrap: wrap;
  background: linear-gradient(120deg, var(--navy-lo), var(--navy)); color: #fff;
  border-radius: var(--radius); padding: 26px 28px; box-shadow: var(--shadow);
}
.descarga__icono { width: 76px; height: 76px; border-radius: 17px; flex: none; }
.descarga__texto { flex: 1 1 320px; }
.descarga h2 { margin: 0 0 6px; font-size: 24px; }
.descarga p { margin: 0 0 6px; color: #d6e6f4; font-size: 14.5px; }
.descarga .nota { color: #a9c4dd; }
.descarga .nota--hash code {
  overflow-wrap: anywhere; word-break: break-all;
  background: rgba(255, 255, 255, .12); border-color: rgba(255, 255, 255, .18); color: #e8f1f9;
}

/* ---------- Notas ---------- */
.nota { font-size: 13px; color: var(--muted); }
.nota--alerta { background: #fff7ec; border: 1px solid #f0cf9a; border-radius: 9px; padding: 12px 14px; color: #7a4a12; font-size: 14px; }
.nota--ok { background: #eef8f1; border: 1px solid #b6e2c4; color: #15633a; border-radius: 9px; padding: 12px 14px; font-size: 14px; }
.nota--hash code {
  display: block; margin: 5px 0; padding: 8px 10px; background: var(--bg-alt2); border: 1px solid var(--line);
  border-radius: 6px; font-family: ui-monospace, Consolas, monospace; font-size: 12px;
  word-break: break-all; color: var(--ink);
}
html.tema-oscuro .nota--alerta { background: #3a2c1a; border-color: #6b4c22; color: #f0c88a; }
html.tema-oscuro .nota--ok { background: #1c3326; border-color: #2f6547; color: #9fdcb8; }

/* ---------- Pie ---------- */
.pie { background: var(--navy-lo); color: #b9cfe3; font-size: 14px; margin-top: 30px; }
.pie__rejilla { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 26px; padding: 32px 20px 22px; }
.pie h4 { color: #fff; font-size: 15px; margin: 0 0 10px; }
.pie a { color: #cfe1f2; }
.pie__base { border-top: 1px solid rgba(255, 255, 255, .12); padding: 14px 20px 26px; display: flex; flex-wrap: wrap; gap: 10px 20px; justify-content: space-between; }

/* ---------- Utilidades ---------- */
.centro { text-align: center; }
.marco {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; margin: 24px 0; max-width: 820px;
}
.marco h1 { margin-top: 0; }
.marco h2 { margin: 28px 0 8px; font-size: 20px; }
.ok { color: var(--free); }

@media (max-width: 940px) {
  .hero__rejilla { grid-template-columns: 1fr; }
  .cabera__alta { flex-wrap: wrap; }
  .nav { margin-left: 0; width: 100%; }
  .privacidad { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .hero h1 { font-size: 28px; }
  .descarga { padding: 22px; }
  .descarga__icono { width: 62px; height: 62px; }
  .marco { padding: 20px; }
}