:root {
    --tinta: #1D2B3A;      /* texto */
    --tenue: #5B6B7B;      /* texto secundario */
    --papel: #FFFFFF;
    --superficie: #EDF1F5; /* bloques */
    --linea: #C9D3DD;
    --accion: #0B6E5F;     /* seleccionado / botón */
    --accion-suave: #DDF0EC;
    --orden: #F0B429;      /* números del top 3 */
    --alerta: #B42318;
    box-sizing: border-box;
    padding-top: env(safe-area-inset-top, 0px);
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }
  *, *::before, *::after { box-sizing: inherit; }
  html, body { margin: 0; background: var(--papel); color: var(--tinta); }
  body { font: 18px/1.45 "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif; }
  main { max-width: 640px; margin: 0 auto; padding: 0 18px 120px; }

  .barra { position: sticky; top: 0; z-index: 5; background: var(--papel); border-bottom: 1px solid var(--linea); }
  .barra-in { max-width: 640px; margin: 0 auto; padding: 12px 18px 10px; display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
  .barra b { font-size: 17px; }
  .barra small { color: var(--tenue); font-size: 15px; }
  .progreso { height: 4px; background: var(--superficie); }
  .progreso i { display: block; height: 100%; width: 0; background: var(--accion); transition: width .25s; }

  h1 { font-size: 30px; line-height: 1.15; margin: 28px 0 6px; letter-spacing: -0.01em; }
  .sub { color: var(--tenue); margin: 0 0 22px; font-size: 16px; }
  h2 { font-size: 21px; margin: 40px 0 4px; display: flex; gap: 10px; align-items: baseline; }
  h2 span { color: var(--accion); font-size: 16px; min-width: 1.4em; }

  .aviso { background: var(--superficie); border-radius: 10px; padding: 16px 18px; font-size: 16px; }
  .aviso p { margin: 0 0 12px; }
  .check { display: flex; gap: 12px; align-items: flex-start; font-weight: 700; cursor: pointer; }
  .check input { width: 26px; height: 26px; accent-color: var(--accion); flex: none; margin-top: 1px; }

  .q { padding: 18px 0; border-bottom: 1px solid var(--superficie); }
  .q[hidden] { display: none; }
  .q > label, .q > .et { display: block; font-weight: 700; margin-bottom: 10px; }
  .q .num { color: var(--tenue); font-weight: 400; margin-right: 4px; }

  input[type=text], input[type=number], input[type=tel], input[type=search], textarea {
    width: 100%; font: inherit; color: inherit; padding: 12px 14px; border: 1.5px solid var(--linea);
    border-radius: 8px; background: var(--papel); min-height: 50px;
  }
  textarea { min-height: 96px; resize: vertical; }
  input:focus, textarea:focus { outline: none; border-color: var(--accion); box-shadow: 0 0 0 3px var(--accion-suave); }

  .ops { display: flex; flex-wrap: wrap; gap: 8px; }
  .op { position: relative; font: inherit; font-size: 17px; color: var(--tinta); background: var(--papel);
        border: 1.5px solid var(--linea); border-radius: 999px; padding: 10px 16px; min-height: 48px; cursor: pointer; text-align: left; }
  .op[aria-pressed=true] { background: var(--accion); border-color: var(--accion); color: #fff; }
  .op:focus-visible, .btn:focus-visible { outline: 3px solid var(--orden); outline-offset: 2px; }
  .op .rk { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%;
            background: var(--orden); color: var(--tinta); font-weight: 700; font-size: 15px; margin-right: 8px; }
  .otro { margin-top: 10px; }

  .tabla { display: grid; gap: 14px; }
  .fila-esc .nombre, .fila-cnt .nombre { font-size: 16px; margin-bottom: 6px; }
  .fila-esc .ops .op { min-width: 48px; justify-content: center; text-align: center; padding: 10px 12px; }
  .fila-cnt { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
  .paso { display: flex; align-items: center; gap: 6px; }
  .paso button { width: 48px; height: 48px; border-radius: 50%; border: 1.5px solid var(--linea); background: var(--papel); font: inherit; font-size: 24px; color: var(--tinta); cursor: pointer; }
  .paso output { min-width: 2ch; text-align: center; font-weight: 700; font-size: 20px; }

  .colonia { border: 1.5px solid var(--linea); border-radius: 10px; padding: 14px 16px; }
  .colonia.ok { border-color: var(--accion); background: var(--accion-suave); }
  .colonia .nom { font-size: 20px; font-weight: 700; }
  .colonia .meta { color: var(--tenue); font-size: 15px; }
  .colonia .acciones { display: flex; gap: 14px; margin-top: 8px; flex-wrap: wrap; }
  .link { background: none; border: 0; padding: 6px 0; font: inherit; font-size: 16px; color: var(--accion); text-decoration: underline; cursor: pointer; }
  .resultados { margin-top: 8px; display: grid; }
  .resultados button { text-align: left; font: inherit; font-size: 17px; background: var(--papel); border: 0; border-bottom: 1px solid var(--superficie); padding: 12px 4px; color: var(--tinta); cursor: pointer; }
  .resultados button small { color: var(--tenue); }

  .pie { position: fixed; left: 0; right: 0; bottom: 0; background: var(--papel); border-top: 1px solid var(--linea);
         padding: 12px 18px calc(12px + env(safe-area-inset-bottom, 0px)); }
  .pie-in { max-width: 640px; margin: 0 auto; display: flex; gap: 12px; align-items: center; }
  .btn { flex: 1; font: inherit; font-weight: 700; font-size: 18px; border: 0; border-radius: 10px; min-height: 56px; background: var(--accion); color: #fff; cursor: pointer; }
  .btn[disabled] { opacity: .5; }
  .btn.sec { background: var(--superficie); color: var(--tinta); }
  .error { color: var(--alerta); font-size: 16px; margin-top: 8px; }
  .pend { font-size: 15px; color: var(--tenue); }

  .listo { text-align: left; padding-top: 48px; }
  .listo .folio { font-size: 34px; font-weight: 700; letter-spacing: .02em; }
  @media (prefers-reduced-motion: reduce) { * { transition: none !important; } }