:root{
    --bg:#0a1020; --bg2:#0e1730; --card:#111a31; --card2:#17224a; --line:#24305a;
    --text:#eaf0fb; --muted:#9fb0cf;
    --accent:#4ade80; --accent2:#22d3ee; --accent-ink:#04210f;
    --warn:#fbbf24; --bad:#f87171;
    --glow:rgba(74,222,128,.16); --glow2:rgba(34,211,238,.13);
    --shadow:0 12px 32px rgba(0,0,0,.35);
  }
  @media (prefers-color-scheme: light){
    :root{
      --bg:#f5f8fd; --bg2:#edf2fa; --card:#ffffff; --card2:#f2f6fc; --line:#d6e0f0;
      --text:#0e1a33; --muted:#4b5b7a;
      --accent:#15803d; --accent2:#0e7490; --accent-ink:#ffffff;
      --warn:#a16207; --bad:#b91c1c;
      --glow:rgba(22,163,74,.14); --glow2:rgba(8,145,178,.11);
      --shadow:0 12px 32px rgba(20,40,80,.10);
    }
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
  a{color:var(--accent)}
  img,svg{max-width:100%}
  .wrap{width:100%;max-width:960px;margin:0 auto;padding:0 20px}
  @media (max-width:480px){.wrap{padding:0 16px}}
  .skip{position:absolute;left:-999px;top:8px;background:var(--accent);color:var(--accent-ink);padding:8px 12px;border-radius:8px;z-index:50}
  .skip:focus{left:8px}

  /* Cabecera */
  .top{position:sticky;top:0;z-index:20;background:var(--bg);background:color-mix(in srgb,var(--bg) 80%,transparent);-webkit-backdrop-filter:saturate(1.4) blur(12px);backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line);border-bottom-color:color-mix(in srgb,var(--line) 70%,transparent)}
  .bar{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:64px}
  .brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-weight:600;letter-spacing:-.01em;font-size:1.08rem}
  .brand b{color:var(--accent);font-weight:800}
  .mark{width:32px;height:32px;flex:none}
  nav{display:flex;align-items:center;gap:6px}
  .nav-link{color:var(--muted);text-decoration:none;padding:8px 10px;border-radius:8px;font-size:.95rem}
  .nav-link:hover{color:var(--text);background:var(--card)}
  @media (max-width:640px){.nav-link{display:none}}

  /* Botones */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;background:var(--accent);color:var(--accent-ink);font:inherit;font-weight:700;border:1px solid transparent;border-radius:12px;padding:12px 22px;cursor:pointer;text-decoration:none;transition:transform .12s,filter .12s}
  .btn:hover{filter:brightness(1.08)}
  .btn:active{transform:translateY(1px)}
  .btn[disabled]{opacity:.65;cursor:wait}
  .btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
  .btn-ghost:hover{background:var(--card);filter:none}
  .btn-sm{min-height:40px;padding:8px 16px;font-size:.95rem;border-radius:10px}
  :focus-visible{outline:2px solid var(--accent);outline-offset:3px}

  /* Hero */
  .hero{position:relative;isolation:isolate;text-align:center;padding-top:56px;padding-bottom:20px}
  .hero::before{content:"";position:absolute;z-index:-1;left:0;right:0;top:-70px;height:540px;background:radial-gradient(55% 60% at 50% 0%,var(--glow),transparent 72%),radial-gradient(38% 45% at 88% 8%,var(--glow2),transparent 72%)}
  .badge{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--card);color:var(--muted);font-size:.82rem;font-weight:600;padding:6px 14px;border-radius:99px;margin-bottom:22px}
  .pulse{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 var(--glow);animation:pulse 2s infinite}
  @keyframes pulse{70%{box-shadow:0 0 0 9px transparent}100%{box-shadow:0 0 0 0 transparent}}
  @media (prefers-reduced-motion: reduce){.pulse{animation:none} html{scroll-behavior:auto}}
  h1{font-size:clamp(2.1rem,7.2vw,3.7rem);line-height:1.05;margin:0 auto 18px;letter-spacing:-.035em;font-weight:800;max-width:15ch}
  @media (min-width:760px){h1{max-width:18ch}}
  h1 em{font-style:normal;color:var(--accent);background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
  .lead{max-width:640px;margin:0 auto 28px;color:var(--muted);font-size:1.1rem}
  .cta{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
  @media (max-width:480px){.cta .btn{width:100%}}

  /* Línea de tiempo */
  .tl{list-style:none;margin:40px auto 0;padding:22px;max-width:780px;text-align:left;display:grid;gap:22px;background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
  .tl li{position:relative;padding-left:36px;display:grid;gap:2px}
  .tl strong{font-size:1rem;line-height:1.35}
  .tl li span:last-child{color:var(--muted);font-size:.92rem}
  .t-dot{position:absolute;left:0;top:3px;width:20px;height:20px;border-radius:50%;background:var(--card2);border:3px solid var(--line)}
  .tl li::before{content:"";position:absolute;left:9px;top:26px;bottom:-24px;width:2px;background:var(--line)}
  .tl li:last-child::before{display:none}
  .tl li.hit .t-dot{border-color:var(--accent);background:var(--accent);box-shadow:0 0 0 6px var(--glow)}
  .tl li.hit strong{color:var(--accent)}
  .tl li.bad .t-dot{border-color:var(--bad)}
  @media (min-width:760px){
    .tl{grid-template-columns:repeat(3,1fr);gap:22px;padding:26px}
    .tl li{padding-left:0;padding-top:38px}
    .t-dot{left:0;top:0}
    .tl li::before{left:26px;right:-22px;top:9px;bottom:auto;width:auto;height:2px}
  }

  /* Secciones */
  section.wrap{padding-top:44px;padding-bottom:44px}
  h2{font-size:clamp(1.5rem,4.6vw,2rem);line-height:1.15;margin:0 0 10px;letter-spacing:-.025em;font-weight:800}
  h3{margin:0 0 6px;font-size:1.05rem}
  .sub{color:var(--muted);margin:0 0 26px}
  .prose p{color:var(--muted);max-width:720px;margin:0 0 14px}
  .chips{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:18px 0 0}
  .chips li{border:1px solid var(--line);background:var(--card);padding:7px 14px;border-radius:99px;font-size:.92rem;font-weight:600}
  .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
  .card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px}
  .card p{margin:0;color:var(--muted)}
  .ico{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;background:var(--card2);color:var(--accent);margin-bottom:12px}
  .ico svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

  /* Formulario */
  .formcard{max-width:600px;margin:0 auto;padding:26px;box-shadow:var(--shadow)}
  @media (max-width:480px){.formcard{padding:20px 16px}}
  .field{margin-bottom:22px}
  label.l{display:block;font-weight:600;margin-bottom:8px}
  input[type=text],input[type=email],textarea{width:100%;min-height:48px;background:var(--bg2);color:var(--text);border:1px solid var(--line);border-radius:12px;padding:12px 14px;font:inherit;font-size:16px}
  textarea{min-height:120px;resize:vertical}
  input::placeholder,textarea::placeholder{color:var(--muted);opacity:.75}
  .field.invalid input,.field.invalid textarea{border-color:var(--bad)}
  .hint{color:var(--muted);font-size:.88rem;margin:8px 0 0}
  .err{color:var(--bad);font-size:.9rem;margin:8px 0 0;display:none}
  .field.invalid .err{display:block}
  .check{display:flex;gap:12px;align-items:flex-start;color:var(--muted);font-size:.9rem;margin:6px 0 22px}
  .check input{width:20px;height:20px;flex:none;margin:2px 0 0;accent-color:var(--accent)}
  #msg{margin-top:14px;padding:12px 14px;border-radius:12px;display:none}
  #msg.ok{display:block;background:rgba(74,222,128,.12);border:1px solid var(--accent)}
  #msg.bad{display:block;background:rgba(251,191,36,.12);border:1px solid var(--warn)}
  .hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
  .cf-turnstile{max-width:100%;min-height:65px;margin-bottom:18px}

  /* Umbral */
  .um-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
  .um-head label{margin:0}
  .um-val{font-size:1.7rem;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1}
  input[type=range]{-webkit-appearance:none;appearance:none;display:block;width:100%;height:40px;margin:6px 0 0;background:transparent;cursor:pointer;--p:44%}
  input[type=range]::-webkit-slider-runnable-track{height:8px;border-radius:99px;background:linear-gradient(to right,var(--accent) var(--p),var(--line) var(--p))}
  input[type=range]::-moz-range-track{height:8px;border-radius:99px;background:var(--line)}
  input[type=range]::-moz-range-progress{height:8px;border-radius:99px;background:var(--accent)}
  input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;box-sizing:border-box;width:30px;height:30px;margin-top:-11px;border-radius:50%;background:var(--card);border:4px solid var(--accent);box-shadow:0 2px 10px rgba(0,0,0,.35)}
  input[type=range]::-moz-range-thumb{box-sizing:border-box;width:30px;height:30px;border-radius:50%;background:var(--card);border:4px solid var(--accent);box-shadow:0 2px 10px rgba(0,0,0,.35)}
  input[type=range]:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:10px}
  .um-ends{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:.82rem;margin-top:2px}
  .um-card{margin-top:12px;padding:12px 14px;border-radius:12px;background:var(--bg2);border:1px solid var(--line);display:grid;gap:2px}
  .um-card strong{font-size:.98rem}
  .um-card span{color:var(--muted);font-size:.92rem}
  .prev{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:6px}
  .prev li{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:8px 12px;border-radius:10px;border:1px dashed var(--line);font-size:.88rem}
  .prev li.on{border-style:solid;border-color:var(--accent);border-color:color-mix(in srgb,var(--accent) 55%,var(--line));background:color-mix(in srgb,var(--accent) 9%,transparent)}
  .prev .d{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.84rem;overflow-wrap:anywhere}
  .prev .s{white-space:nowrap;color:var(--muted);font-variant-numeric:tabular-nums;font-size:.82rem}
  .prev li.on .s{color:var(--accent);font-weight:700}
  .prev-sum{margin:10px 0 0;color:var(--muted);font-size:.88rem}
  @media (max-width:420px){.prev li{flex-direction:column;align-items:flex-start;gap:2px}}

  /* FAQ y pie */
  details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:4px 18px;margin-bottom:10px}
  summary{cursor:pointer;font-weight:600;padding:12px 0;list-style:none;display:flex;justify-content:space-between;gap:12px;align-items:center}
  summary::-webkit-details-marker{display:none}
  summary::after{content:"+";color:var(--accent);font-size:1.4rem;line-height:1;flex:none}
  details[open] summary::after{content:"−"}
  details p{margin:0 0 14px;color:var(--muted)}
  footer{padding:32px 0 calc(48px + env(safe-area-inset-bottom));color:var(--muted);font-size:.88rem;border-top:1px solid var(--line);margin-top:24px;text-align:center}

  /* ---- Ajustes titular comercial ---- */
  h1{font-size:clamp(2rem,6.6vw,3.3rem);max-width:21ch}
  @media (min-width:760px){h1{max-width:25ch}}

  /* ---- Páginas de contenido ---- */
  .crumbs{font-size:.85rem;color:var(--muted);padding-top:26px}
  .crumbs a{color:var(--muted)}
  .art{max-width:760px}
  .art h1{text-align:left;margin:10px 0 16px;max-width:none;font-size:clamp(1.8rem,5.8vw,2.7rem)}
  .art h2{margin:36px 0 10px}
  .art .lead{text-align:left;margin:0 0 8px;max-width:none}
  .art p,.art li{color:var(--muted)}
  .art ul,.art ol{padding-left:22px;margin:0 0 14px}
  .art li{margin-bottom:6px}
  .art strong{color:var(--text)}
  .tbl-wrap{overflow-x:auto;margin:14px 0 18px;border:1px solid var(--line);border-radius:12px}
  table.tbl{width:100%;border-collapse:collapse;font-size:.92rem;background:var(--card)}
  .tbl th,.tbl td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
  .tbl tr:last-child td{border-bottom:0}
  .tbl th{color:var(--text);font-size:.85rem}
  .tbl td{color:var(--muted)}
  .tbl td code{white-space:nowrap}
  .tbl code,.art code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.86rem;color:var(--text);overflow-wrap:anywhere}
  .callout{border:1px solid var(--line);border-left:4px solid var(--accent);background:var(--card);border-radius:12px;padding:14px 16px;margin:22px 0}
  .callout p{margin:0}
  .ctabox{margin:36px 0 10px;text-align:center;padding:26px 20px}
  .ctabox h2{margin-top:0}
  .ctabox p{margin:0 auto 18px;max-width:520px}
  .more{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:22px}
  .more a.card{text-decoration:none;color:var(--text);display:block}
  .more a.card:hover{border-color:var(--accent)}
  .more a.card p{margin-top:4px;font-size:.92rem}
  .steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:12px}
  .steps li{counter-increment:s;position:relative;padding:14px 16px 14px 56px;background:var(--card);border:1px solid var(--line);border-radius:14px;color:var(--muted)}
  .steps li::before{content:counter(s);position:absolute;left:14px;top:12px;width:30px;height:30px;border-radius:50%;background:var(--card2);color:var(--accent);font-weight:800;display:grid;place-items:center}
  .steps strong{color:var(--text);display:block}
  .flinks{display:flex;flex-wrap:wrap;gap:6px 18px;justify-content:center;margin:0 0 14px}
  .flinks a{color:var(--muted)}
  .flinks a:hover{color:var(--text)}