:root {
  --encre: #1d2330;
  --encre-douce: #4a5263;
  --fond: #f6f4ef;
  --papier: #ffffff;
  --trait: #e2ddd2;
  --accent: #24457a;
  --accent-clair: #e7edf6;
  --surligne: #fff1a8;
  --erreur: #a3261b;
  --serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--fond); color: var(--encre); font: 17px/1.6 var(--sans); }
a { color: var(--accent); text-underline-offset: 2px; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.2; font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.9rem, 4.5vw, 2.7rem); margin: 0.2em 0 0.4em; }
h2 { font-size: clamp(1.35rem, 3vw, 1.7rem); margin: 1.8em 0 0.5em; }
mark { background: var(--surligne); color: inherit; padding: 0 2px; border-radius: 2px; }
.enveloppe { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.evitement { position: absolute; left: -9999px; }
.evitement:focus { left: 16px; top: 8px; background: #fff; padding: 8px; z-index: 10; }

/* en-tête et pied */
.entete { background: var(--papier); border-bottom: 1px solid var(--trait); }
.entete__in { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--encre); text-decoration: none; font-family: var(--serif); font-size: 1.3rem; font-weight: 700; }
.logo svg { color: var(--accent); }
.logo em { font-style: italic; color: var(--accent); }
.nav { display: flex; gap: 18px; flex-wrap: wrap; font-size: 0.95rem; }
.nav a { color: var(--encre-douce); text-decoration: none; }
.nav a:hover { color: var(--accent); }
.pied { margin-top: 64px; background: #1d2330; color: #cfd4de; font-size: 0.92rem; }
.pied a { color: #e8ecf3; }
.pied__in { padding-top: 40px; padding-bottom: 32px; }
.pied__liens { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 20px; margin: 24px 0; }
.pied__liens a { display: block; text-decoration: none; margin: 4px 0; }
.pied__liens a:hover { text-decoration: underline; }
.pied__titre { color: #fff; font-weight: 600; margin: 0 0 6px; }
.pied__legal { border-top: 1px solid #343c4d; padding-top: 16px; }

/* accueil */
.une { background: var(--papier); border-bottom: 1px solid var(--trait); padding: 40px 0 36px; }
.une h1 { max-width: 16em; }
.chapo { font-size: 1.12rem; color: var(--encre-douce); max-width: 46em; }
.etapes { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; padding: 0; margin: 24px 0 0; list-style: none; counter-reset: e; }
.etapes li { counter-increment: e; background: var(--fond); border: 1px solid var(--trait); border-radius: 10px; padding: 14px 16px 14px 52px; position: relative; }
.etapes li::before { content: counter(e); position: absolute; left: 14px; top: 13px; width: 26px; height: 26px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 700; display: grid; place-items: center; font-size: 0.9rem; }
.categorie > p { color: var(--encre-douce); margin-top: -4px; }
.cartes { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.carte { display: flex; flex-direction: column; gap: 6px; background: var(--papier); border: 1px solid var(--trait); border-radius: 10px; padding: 16px 18px; text-decoration: none; color: var(--encre); transition: border-color .15s, transform .15s; }
.carte:hover { border-color: var(--accent); transform: translateY(-1px); }
.carte__titre { font-family: var(--serif); font-weight: 700; font-size: 1.12rem; color: var(--accent); }
.carte__texte { font-size: 0.93rem; color: var(--encre-douce); }

/* page lettre */
.fil { font-size: 0.88rem; color: var(--encre-douce); padding-top: 18px; }
.fil a { color: var(--encre-douce); }
.tete .meta { font-size: 0.88rem; color: var(--encre-douce); }
.generateur { margin-top: 12px; }
.generateur__titre { margin-top: 0.8em; }
.generateur__grille { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 24px; align-items: start; }
.formulaire { background: var(--papier); border: 1px solid var(--trait); border-radius: 12px; padding: 18px; }
.groupe { border: 0; padding: 0; margin: 0 0 14px; }
.groupe legend { font-weight: 700; font-size: 0.8rem; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; padding: 0; }
.champ { margin-bottom: 12px; }
.champ label { display: block; font-weight: 600; font-size: 0.93rem; margin-bottom: 4px; }
.champ .aide { font-size: 0.82rem; color: var(--encre-douce); margin: 3px 0 0; }
.champ input[type=text], .champ input[type=date], .champ select, .champ textarea { width: 100%; font: inherit; font-size: 16px; padding: 9px 11px; border: 1px solid #cdc6b8; border-radius: 8px; background: #fff; color: var(--encre); }
.champ textarea { min-height: 84px; resize: vertical; }
.champ input:focus, .champ select:focus, .champ textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.champ--case label { display: flex; gap: 8px; align-items: flex-start; font-weight: 500; }
.champ--case input { margin-top: 5px; }
.effacer { font-size: 0.85rem; }
.apercu { position: sticky; top: 12px; }
.apercu__barre { display: flex; align-items: center; gap: 14px; font-size: 0.9rem; color: var(--encre-douce); margin-bottom: 8px; flex-wrap: wrap; }
.apercu__barre span { margin-right: auto; font-weight: 600; }
.apercu__note { font-size: 0.84rem; color: var(--encre-douce); }
.lien-bouton { background: none; border: 0; padding: 0; font: inherit; color: var(--accent); text-decoration: underline; cursor: pointer; }
.papier { background: var(--papier); border: 1px solid var(--trait); border-radius: 4px; box-shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(29,35,48,.07); padding: 36px 40px; font: 15px/1.55 var(--serif); min-height: 420px; overflow-wrap: anywhere; }
.papier p { margin: 0 0 0.85em; white-space: pre-line; }
.papier .l-exp { margin-bottom: 1.4em; }
.papier .l-dest, .papier .l-date, .papier .l-sign { margin-left: 52%; }
.papier .l-dest { margin-bottom: 1.1em; }
.papier .l-date { margin-bottom: 1.4em; }
.papier .l-envoi { font-size: 0.85em; margin: 0; color: var(--encre-douce); }
.papier .l-objet { font-weight: 700; margin-bottom: 1.3em; }
.papier .l-titre { text-align: center; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; margin: .6em 0 1.4em; }
.papier .l-corps p { text-align: justify; hyphens: auto; }
.papier .l-sign { margin-top: 1.6em; }

.achat { background: var(--papier); border: 2px solid var(--accent); border-radius: 12px; padding: 20px 22px; margin: 28px 0 8px; max-width: 760px; }
.achat h2 { margin-top: 0; }
.achat__intro, .achat__note { color: var(--encre-douce); font-size: 0.93rem; }
.offres { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; margin: 14px 0; }
.offre { display: grid; grid-template-columns: auto 1fr auto; gap: 4px 10px; align-items: baseline; border: 1px solid var(--trait); border-radius: 10px; padding: 12px 14px; cursor: pointer; }
.offre:has(input:checked) { border-color: var(--accent); background: var(--accent-clair); }
.offre input { grid-row: 1; }
.offre__nom { font-weight: 700; }
.offre__prix { font-weight: 700; color: var(--accent); white-space: nowrap; }
.offre__detail { grid-column: 2 / 4; font-size: 0.87rem; color: var(--encre-douce); }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 0.88rem; margin: 6px 0 14px; }
.consent input { margin-top: 4px; }
.bouton { display: inline-block; background: var(--accent); color: #fff; border: 0; border-radius: 9px; padding: 13px 22px; font: 600 1rem var(--sans); cursor: pointer; text-decoration: none; }
.bouton:hover { background: #1b365f; }
.bouton[disabled] { opacity: .6; cursor: wait; }
.achat__erreur { color: var(--erreur); font-weight: 600; }

.texte { max-width: 780px; }
.texte ul, .texte ol { padding-left: 1.2em; }
.texte li { margin: 0.35em 0; }
.faq details { background: var(--papier); border: 1px solid var(--trait); border-radius: 10px; padding: 12px 16px; margin: 10px 0; }
.faq summary { font-weight: 600; cursor: pointer; }
.sources li { overflow-wrap: anywhere; }
.liees .cartes { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.legal h2 { font-size: 1.2rem; }

@media (max-width: 860px) {
  .generateur__grille { grid-template-columns: 1fr; }
  .apercu { position: static; }
  .papier { padding: 24px 18px; font-size: 14px; }
  .papier .l-dest, .papier .l-date, .papier .l-sign { margin-left: 30%; }
}

@media print {
  body { background: #fff; }
  body * { visibility: hidden; }
  .papier, .papier * { visibility: visible; }
  .papier { position: absolute; left: 0; top: 0; width: 100%; border: 0; box-shadow: none; padding: 0; font-size: 11.5pt; }
  .papier mark { background: none; }
}