:root {
  --fond: #f6f4ef; --surface: #ffffff; --texte: #22252b; --discret: #666b75;
  --accent: #2f5d62; --sur-accent: #ffffff; --bord: #ddd9cf; --alerte: #9a3b2e;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fond: #17181c; --surface: #212329; --texte: #ecebe7; --discret: #a2a6b0;
    --accent: #7fb7b0; --sur-accent: #10201f; --bord: #353841; --alerte: #f0a091;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--fond); color: var(--texte);
  font: 17px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
main {
  max-width: 34rem; margin: 0 auto;
  padding: calc(1.5rem + env(safe-area-inset-top)) 1rem calc(2rem + env(safe-area-inset-bottom));
}
h1 { font-size: 1.6rem; line-height: 1.2; margin: 0 0 1rem; }
h2 { font-size: 1.1rem; margin: 2rem 0 .5rem; }
a { color: var(--accent); }
small, .message { color: var(--discret); }
.message.erreur { color: var(--alerte); }
label { display: block; margin: 1.25rem 0 .35rem; font-weight: 600; }
input[type=text] {
  width: 100%; padding: .75rem; font: inherit; color: inherit;
  background: var(--surface); border: 1px solid var(--bord); border-radius: .6rem;
}
.bouton {
  display: block; width: 100%; margin: 1rem 0 0; padding: .9rem 1rem; min-height: 3rem;
  font: inherit; font-weight: 600; text-align: center; text-decoration: none; cursor: pointer;
  color: var(--sur-accent); background: var(--accent); border: 1px solid var(--accent); border-radius: .75rem;
}
.bouton.secondaire { color: var(--accent); background: transparent; }
.bouton:disabled { opacity: .6; }
button.lien { background: none; border: 0; padding: .5rem; font: inherit; color: var(--alerte); cursor: pointer; }
.liste { list-style: none; padding: 0; margin: 0; }
.liste li {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: .75rem 1rem; margin-bottom: .5rem;
  background: var(--surface); border: 1px solid var(--bord); border-radius: .75rem;
}
.numeros a { font-size: 1.4rem; text-decoration: none; }
.etapes { padding-left: 1.25rem; }
.etapes li { margin-bottom: .6rem; }