:root {
  --petroleo: #0F3D46;
  --naranja: #FF6A13;
  --arena: #F4EFE6;
  --grafito: #1B1F22;
  --blanco: #ffffff;
  --suave: #4a5258;
  --radio: 12px;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--arena); color: var(--grafito); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--petroleo); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--naranja); outline-offset: 2px; }
.contenedor { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.fila { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.saltar { position: absolute; left: -999px; top: 8px; background: var(--blanco); padding: 8px 12px; z-index: 10; }
.saltar:focus { left: 8px; }
.cabecera { background: var(--blanco); border-bottom: 1px solid #e3dccf; position: sticky; top: 0; z-index: 5; }
.cabecera .fila { padding-top: 10px; padding-bottom: 10px; flex-wrap: nowrap; }
.marca { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--grafito); }
.marca span { display: flex; flex-direction: column; line-height: 1.1; }
.marca small { color: var(--suave); font-size: 13px; }
nav { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
nav a { text-decoration: none; font-weight: 600; }
.boton { display: inline-block; background: var(--naranja); color: var(--grafito); font-weight: 700; text-decoration: none; padding: 12px 20px; border-radius: 999px; border: 0; font: inherit; font-weight: 700; cursor: pointer; }
.boton:hover { filter: brightness(0.95); }
.boton-chico { padding: 8px 14px; }
.boton-secundario { background: transparent; color: var(--arena); box-shadow: inset 0 0 0 2px var(--arena); }
.portada { background: var(--petroleo); color: var(--arena); padding: 72px 0 64px; }
.portada h1 { font-size: clamp(30px, 5vw, 52px); line-height: 1.1; margin: 8px 0 16px; max-width: 18ch; }
.sobretitulo { color: var(--naranja); font-weight: 700; text-transform: uppercase; letter-spacing: .08em; margin: 0; }
.bajada { font-size: 19px; max-width: 60ch; }
.acciones { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0 12px; }
.nota-portada { font-size: 14px; opacity: .9; }
.seccion { padding: 56px 0; }
.seccion h2 { font-size: clamp(24px, 3.5vw, 34px); margin: 0 0 24px; }
.seccion-oscura { background: var(--grafito); color: var(--arena); }
.seccion-arena { background: #ebe3d4; }
.pasos { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; counter-reset: paso; }
.pasos li { background: var(--blanco); border-radius: var(--radio); padding: 20px; counter-increment: paso; position: relative; }
.pasos li::before { content: counter(paso); display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--petroleo); color: var(--arena); font-weight: 700; }
.pasos h3 { margin: 10px 0 6px; font-size: 18px; }
.pasos p, .rejilla p { margin: 0; color: var(--suave); }
.oficios { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.oficios li { border: 2px solid var(--naranja); border-radius: 999px; padding: 8px 16px; font-weight: 600; }
.rejilla { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.rejilla article { border-top: 4px solid var(--naranja); padding-top: 12px; }
.alerta-estafa { background: var(--naranja); color: var(--grafito); }
.alerta-estafa a { color: var(--grafito); font-weight: 700; }
.dos-columnas { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 32px; align-items: start; }
.lista-check { padding-left: 0; list-style: none; }
.lista-check li::before { content: "✓ "; color: var(--petroleo); font-weight: 700; }
.tarjeta { background: var(--blanco); border-radius: var(--radio); padding: 24px; box-shadow: 0 2px 10px rgba(27,31,34,.06); }
.tarjeta h3 { margin-top: 0; }
label { display: block; font-weight: 600; margin: 14px 0 4px; }
input, select, textarea { width: 100%; padding: 11px 12px; border: 1.5px solid #c9c1b2; border-radius: 8px; font: inherit; background: var(--blanco); color: var(--grafito); }
.casilla { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; font-size: 15px; }
.casilla input { width: auto; margin-top: 5px; }
.tarjeta .boton { margin-top: 18px; width: 100%; }
.trampa { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.estado { min-height: 1.5em; margin-bottom: 0; }
.estado.ok { color: #1e6b33; }
.estado.error { color: #a12a1b; }
.pie { background: var(--petroleo); color: var(--arena); padding: 24px 0; font-size: 15px; }
.pie a { color: var(--arena); }
.pie p { margin: 4px 0; }
.legal { max-width: 760px; margin: 0 auto; padding: 40px 16px 64px; }
.legal table { border-collapse: collapse; width: 100%; display: block; overflow-x: auto; font-size: 15px; }
.legal th, .legal td { border-bottom: 1px solid #d8d0c1; padding: 8px; text-align: left; vertical-align: top; }
.aviso-preliminar { background: #fff3e8; border-left: 4px solid var(--naranja); padding: 12px 16px; }
@media (max-width: 600px) { nav a:not(.boton) { display: none; } .portada { padding: 48px 0; } }