:root{
    --noche:#10212E; --pizarra:#214056; --agua:#8FB1B4; --arena:#D5C9BB;
    --rojo:#E33933; --rojo-osc:#C22C27; --papel:#FBFAF8; --papel-2:#F2EEE8;
    --tinta:#10212E; --tinta-2:#3C5264; --linea:#DCD5CB;
    --verde:#2F7A55; --ambar:#B9791A;
    --display:"Poppins", "Segoe UI", system-ui, sans-serif;
    --texto:"Inter", "Helvetica Neue", Arial, sans-serif;
    color-scheme: light;
  }
  *{box-sizing:border-box}
  html,body{background:var(--papel)}
  body{margin:0;font-family:var(--texto);color:var(--tinta);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased}
  a{color:inherit}
  .wrap{width:100%;max-width:1080px;margin-inline:auto;padding-inline:clamp(16px,4vw,40px)}
  button{font:inherit;cursor:pointer}
  :focus-visible{outline:3px solid var(--rojo);outline-offset:3px;border-radius:4px}

  /* Aviso vista previa */
  .preview{background:var(--arena);color:var(--noche);font-size:13px;text-align:center;padding:8px 16px}

  /* Cabecera + hero */
  .hero{background:var(--noche);color:var(--papel);position:relative;overflow:hidden}
  .top{display:flex;align-items:center;justify-content:space-between;gap:18px;padding-block:22px}
  .top img{height:30px;width:auto;display:block}
  .brand-home{display:inline-flex;align-items:center;flex:none;text-decoration:none}
  .top-actions{display:flex;align-items:center;justify-content:flex-end;gap:14px;flex-wrap:wrap}
  .header-phone{font-size:14px;color:var(--agua);text-decoration:none;font-weight:500;white-space:nowrap}
  .header-phone:hover{color:var(--papel)}
  .back-home{display:inline-flex;align-items:center;gap:8px;padding:9px 13px;border:1px solid rgba(143,177,180,.55);border-radius:4px;color:var(--agua);text-decoration:none;font-size:14px;font-weight:600;line-height:1;white-space:nowrap;transition:color .15s,border-color .15s,background .15s}
  .back-home:hover{color:var(--papel);border-color:var(--rojo);background:rgba(227,57,51,.08)}
  .back-arrow{font-size:17px;line-height:1;transform:translateY(-1px)}
  .back-label-short{display:none}
  .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:end;padding-block:36px 64px}
  .kicker{display:inline-flex;align-items:flex-start;gap:12px;font-family:var(--display);font-weight:600;font-size:13px;letter-spacing:.16em;text-transform:uppercase;margin-bottom:22px}
  .kicker::before{content:"";width:18px;height:24px;border-top:2px solid var(--rojo);border-left:2px solid var(--rojo);margin-top:-6px}
  .kicker b{font-weight:600;color:var(--papel)} .kicker span{color:var(--rojo);border-bottom:2px solid var(--rojo);padding-bottom:3px}
  h1{font-family:var(--display);font-weight:800;font-size:clamp(34px,5.4vw,60px);line-height:1.06;letter-spacing:-.02em;margin:0 0 22px;text-wrap:balance}
  h1 em{font-style:normal;color:var(--rojo)}
  .lead{font-size:clamp(17px,1.6vw,19px);color:#C9D6DC;max-width:36em;margin:0 0 30px;font-weight:300}
  .lead strong{color:var(--papel);font-weight:600}
  .cta-row{display:flex;flex-wrap:wrap;align-items:center;gap:18px 26px}
  .btn{background:var(--rojo);color:#fff;border:0;border-radius:3px;padding:16px 28px;font-family:var(--display);font-weight:600;font-size:16px;letter-spacing:.01em;text-decoration:none;display:inline-flex;align-items:center;gap:10px;transition:background .15s, transform .15s}
  .btn:hover{background:var(--rojo-osc)} .btn:active{transform:translateY(1px)}
  .btn svg{width:18px;height:18px}
  .meta{font-size:14px;color:var(--agua);display:flex;gap:14px;flex-wrap:wrap}
  .meta span+span::before{content:"·";margin-right:14px;color:var(--pizarra)}
  .nave{width:100%;max-width:420px;justify-self:end;display:block}
  .nave .gota{animation:caer 3.2s ease-in infinite;transform-box:fill-box}
  .nave .g2{animation-delay:1.1s} .nave .g3{animation-delay:2.2s}
  @keyframes caer{0%{transform:translateY(0);opacity:0}12%{opacity:1}80%{opacity:1}100%{transform:translateY(58px);opacity:0}}
  .nave-pie{font-size:12px;color:var(--agua);letter-spacing:.06em;text-transform:uppercase;margin-top:8px;text-align:right}

  /* Norma */
  .norma{padding-block:64px 24px}
  .norma h2,.sec-h{font-family:var(--display);font-weight:800;font-size:clamp(24px,3vw,32px);line-height:1.15;margin:0 0 28px;letter-spacing:-.01em;text-wrap:balance;max-width:22em}
  .dos{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:2px solid var(--noche)}
  .dos > div{padding:24px 28px 8px 0}
  .dos > div + div{padding-left:28px;border-left:1px solid var(--linea)}
  .etq{font-family:var(--display);font-weight:600;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--tinta-2);margin-bottom:10px}
  .dos p{margin:0 0 12px;max-width:34em}
  .dos .grande{font-family:var(--display);font-weight:600;font-size:20px;line-height:1.3;color:var(--noche)}
  .fuente{font-size:13px;color:var(--tinta-2)}
  .fuente a{color:var(--tinta-2)}

  /* Test */
  .test-sec{padding-block:48px 80px}
  .card{background:#fff;border:1px solid var(--linea);border-radius:6px;box-shadow:0 1px 0 rgba(16,33,46,.04),0 18px 40px -24px rgba(16,33,46,.25);max-width:760px;margin-inline:auto;overflow:hidden}
  .card-head{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:18px 28px;border-bottom:1px solid var(--linea);background:var(--papel)}
  .bloque{font-family:var(--display);font-weight:600;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--pizarra)}
  .contador{font-variant-numeric:tabular-nums;font-size:14px;color:var(--tinta-2);font-weight:500}
  .barra{height:4px;background:var(--papel-2)} .barra i{display:block;height:100%;width:0;background:var(--rojo);transition:width .3s ease}
  .card-body{padding:32px 28px 28px}
  .q{font-family:var(--display);font-weight:600;font-size:clamp(21px,2.4vw,26px);line-height:1.25;margin:0 0 12px;text-wrap:balance}
  .why{color:var(--tinta-2);font-size:15px;margin:0 0 28px;max-width:40em}
  .opts{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
  .opt{background:var(--papel);border:1.5px solid var(--linea);border-radius:4px;padding:16px 14px;font-weight:600;font-size:16px;color:var(--noche);text-align:center;transition:border-color .12s, background .12s}
  .opt:hover{border-color:var(--noche);background:#fff}
  .opt.sel{border-color:var(--rojo);background:#FDF1F0}
  .card-foot{display:flex;justify-content:space-between;align-items:center;padding:0 28px 24px;min-height:44px}
  .link{background:none;border:0;padding:6px 0;color:var(--tinta-2);font-size:14px;text-decoration:underline;text-underline-offset:3px}
  .link[disabled]{visibility:hidden}

  /* Formulario */
  .gate h3{font-family:var(--display);font-weight:800;font-size:clamp(24px,2.8vw,30px);margin:0 0 8px;line-height:1.15}
  .gate > p{margin:0 0 24px;color:var(--tinta-2);max-width:38em}
  .campos{display:grid;grid-template-columns:1fr 1fr;gap:16px 18px}
  .campo{display:flex;flex-direction:column;gap:6px}
  .campo.full{grid-column:1/-1}
  label{font-size:14px;font-weight:600;color:var(--noche)}
  label small{font-weight:400;color:var(--tinta-2)}
  input[type=text],input[type=email],input[type=tel],select{font:inherit;font-size:16px;padding:12px 14px;border:1.5px solid var(--linea);border-radius:4px;background:#fff;color:var(--noche);width:100%}
  input:focus,select:focus{border-color:var(--noche);outline:none;box-shadow:0 0 0 3px rgba(143,177,180,.45)}
  .check{display:grid;grid-template-columns:18px minmax(0,1fr);column-gap:12px;align-items:start;font-size:14px;font-weight:400;color:var(--tinta-2);line-height:1.45}
  .check input{margin:2px 0 0;width:18px;height:18px;accent-color:var(--rojo);flex:none}
  .check span{display:block;min-width:0}
  .check a{color:var(--noche)}
  .humano{display:flex;gap:12px;align-items:center;background:var(--papel);border-left:3px solid var(--agua);padding:12px 16px;font-size:14px;color:var(--tinta-2);margin:22px 0}
  .proforma-confirm{background:var(--papel);border-left:3px solid var(--agua);padding:14px 16px;font-size:14px;color:var(--tinta-2);margin:22px 0;line-height:1.5}
  .proforma-confirm strong{display:block;color:var(--noche);margin:0 0 3px;font-weight:700}
  .proforma-confirm span{display:block;margin:0}
  .err{color:var(--rojo-osc);font-size:14px;min-height:20px;margin:8px 0 0}
  .hp{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}

  /* Resultado */
  .res-band{padding:30px 28px 26px;color:#fff}
  .res-band.verde{background:var(--verde)} .res-band.ambar{background:var(--ambar)} .res-band.rojo{background:var(--rojo)}
  .res-band .etq{color:rgba(255,255,255,.85)}
  .res-band h3{font-family:var(--display);font-weight:800;font-size:clamp(28px,3.6vw,40px);line-height:1.08;margin:4px 0 0}
  .escala{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;margin:22px 0 6px}
  .escala span{height:8px;border-radius:2px;background:rgba(255,255,255,.28)}
  .escala span.on{background:#fff}
  .escala-txt{display:grid;grid-template-columns:repeat(3,1fr);font-size:12px;letter-spacing:.04em;color:rgba(255,255,255,.9)}
  .res-body{padding:28px}
  .res-body > p{margin:0 0 22px;font-size:17px;max-width:40em}
  .notas{list-style:none;margin:0 0 26px;padding:0;display:grid;gap:0;border-top:1px solid var(--linea)}
  .notas li{padding:14px 0;border-bottom:1px solid var(--linea);font-size:15px;color:var(--tinta-2)}
  .notas b{color:var(--noche);display:block;font-size:14px;letter-spacing:.02em;margin-bottom:2px}
  .siguiente{background:var(--noche);color:var(--papel);border-radius:4px;padding:20px 22px;display:flex;gap:18px;align-items:center;justify-content:space-between;flex-wrap:wrap}
  .siguiente p{margin:0;max-width:34em;font-size:15px;color:#C9D6DC}
  .siguiente strong{color:#fff}
  .siguiente a{color:#fff;font-family:var(--display);font-weight:600;white-space:nowrap;text-decoration:none;border-bottom:2px solid var(--rojo);padding-bottom:2px}
  .aviso-envio{font-size:14px;color:var(--rojo-osc);margin:16px 0 0}

  /* Método */
  .metodo{padding-block:8px 72px}
  .metodo .intro{margin:-12px 0 28px;color:var(--tinta-2);max-width:40em}
  .pasos{display:grid;grid-template-columns:repeat(4,1fr);border-top:2px solid var(--noche)}
  .paso{padding:24px 22px 26px 0}
  .paso + .paso{padding-left:22px;border-left:1px solid var(--linea)}
  .num{font-family:var(--display);font-weight:800;font-size:44px;line-height:1;color:var(--rojo);margin-bottom:14px;font-variant-numeric:tabular-nums}
  .paso h3{font-family:var(--display);font-weight:600;font-size:20px;line-height:1.25;margin:0 0 10px;color:var(--noche)}
  .paso p{margin:0;font-size:15px;color:var(--tinta-2)}
  .paso.destacado{background:var(--noche);padding:24px 22px 26px;border-left:0}
  .paso.destacado h3{color:var(--papel)} .paso.destacado p{color:#C9D6DC}
  .paso.destacado .tag{display:inline-block;margin-top:14px;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--agua);font-weight:600}
  .plat{display:grid;grid-template-columns:1fr 1.25fr;gap:28px 40px;background:var(--papel-2);border-radius:6px;padding:32px;margin-top:32px}
  .plat h3{font-family:var(--display);font-weight:800;font-size:clamp(22px,2.4vw,26px);line-height:1.2;margin:0 0 10px;color:var(--noche)}
  .plat p{margin:0;color:var(--tinta-2);font-size:15px}
  .entregables{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px;align-content:flex-start;align-self:center}
  .entregables li{background:#fff;border:1px solid var(--linea);border-radius:3px;padding:7px 12px;font-size:14px;color:var(--noche)}
  .cta-final{display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;margin-top:32px}
  .cta-final p{margin:0;font-family:var(--display);font-weight:600;font-size:18px;color:var(--noche)}
  .res-extra{margin:14px 0 0;font-size:14px} .res-extra a{color:var(--noche)}
  @media (max-width:900px){
    .pasos{grid-template-columns:1fr 1fr}
    .paso,.paso + .paso{padding:22px 20px 22px 0;border-left:0;border-bottom:1px solid var(--linea)}
    .paso:nth-child(even){padding-left:20px;border-left:1px solid var(--linea)}
    .paso.destacado{padding:22px 20px;border:0}
    .plat{grid-template-columns:1fr;padding:24px}
  }
  @media (max-width:560px){
    .pasos{grid-template-columns:1fr}
    .paso:nth-child(even){padding-left:0;border-left:0}
    .paso.destacado{padding:22px 20px}
  }

  /* Aval */
  .aval{border-top:1px solid var(--linea);padding-block:36px}
  .aval ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .aval li{font-size:15px;color:var(--tinta-2)}
  .aval li b{display:block;font-family:var(--display);font-weight:800;font-size:22px;color:var(--noche);line-height:1.2;margin-bottom:4px}

  footer{background:var(--noche);color:var(--agua);font-size:14px}
  footer .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding-block:26px}
  footer img{height:22px;width:auto;display:block}
  .footer-brand{display:inline-flex;align-items:center;text-decoration:none}
  footer a{color:var(--agua)}

  @media (max-width:700px){
    .top-actions{gap:10px}
    .back-home{padding:9px 11px}
    .header-phone{font-size:13px}
  }

  @media (max-width:820px){
    .hero-grid{grid-template-columns:1fr;gap:12px;padding-block:20px 48px}
    .nave{justify-self:start;max-width:300px;order:-1;opacity:.9}
    .nave-pie{display:none}
    .dos{grid-template-columns:1fr}
    .dos > div + div{padding-left:0;border-left:0;border-top:1px solid var(--linea)}
    .aval ul{grid-template-columns:1fr;gap:18px}
  }
  @media (max-width:520px){
    .opts{grid-template-columns:1fr}
    .campos{grid-template-columns:1fr}
    .card-body,.res-body,.res-band{padding-inline:20px}
    .card-head,.card-foot{padding-inline:20px}
    .top{padding-block:16px;gap:10px}
    .top img{height:26px}
    .top-actions{gap:8px}
    .header-phone{display:none}
    .back-home{padding:9px 11px;font-size:13px}
    .back-label-full{display:none}
    .back-label-short{display:inline}
  }
  @media (prefers-reduced-motion:reduce){ .nave .gota{animation:none;opacity:1} .barra i{transition:none} }

/* v2 · ajustes de robustez y accesibilidad */
html{scroll-behavior:smooth}
body{overflow-x:hidden}
img,svg{max-width:100%}
button,.btn,input,select{min-height:44px}
button:disabled{cursor:not-allowed;opacity:.65}
.preview{position:relative;z-index:10}
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
@media (max-width:560px){
  body{font-size:16px}
  .hero-grid{padding-bottom:42px}
  .btn{width:100%;justify-content:center}
  .cta-row{align-items:stretch}
  .meta{justify-content:center}
  .opts{gap:10px}
}

.test-title{margin-inline:auto;max-width:760px}