:root { --fondo: #f7f3ec; --texto: #5a3e30; --acento: #f2a48a; --caja: #ffffff; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: var(--fondo); color: var(--texto);
  font-family: ui-rounded, "Nunito", "Trebuchet MS", system-ui, sans-serif;
  display: flex; align-items: center; justify-content: center; padding: 16px; }
main { max-width: 440px; width: 100%; text-align: center; }
.logo { width: 100%; max-width: 320px; height: auto; }
h1 { font-size: 1.7rem; line-height: 1.2; margin: 12px 0; }
.msg { font-size: 1.15rem; line-height: 1.45; margin: 12px 0; }
.codigo { background: var(--caja); border: 3px dashed var(--acento); border-radius: 20px; padding: 14px; margin: 18px 0; }
.codigo p { margin: 4px 0; font-size: 1.1rem; }
.codigo .valor { font-size: 2.4rem; font-weight: 800; letter-spacing: .12em; }