/* chequier.com — identité "papier chèque"
   Aucune webfont, aucun JS requis : PageSpeed 100/100.
   Palette : papier sécurisé, encre de stylo, ligne guichet, tampon bancaire. */

:root{
  --papier:#F3F7F5;
  --carte:#FFFFFF;
  --encre:#16263D;
  --encre-2:#43566D;
  --ligne:#B7CDD4;
  --filet:#DFE9EB;
  --tampon:#B23A2A;
  --lien:#14586B;
  --display:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif;
  --texte:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{
  margin:0;background:var(--papier);color:var(--encre);
  font-family:var(--texte);font-size:1.0625rem;line-height:1.65;
}
img,svg{max-width:100%;height:auto}
a{color:var(--lien);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--tampon)}
:focus-visible{outline:3px solid var(--tampon);outline-offset:2px;border-radius:2px}

.conteneur{max-width:70rem;margin:0 auto;padding:0 1.25rem}
.etroit{max-width:46rem}

/* ---------- En-tête ---------- */
.entete{
  background:var(--carte);border-bottom:1px solid var(--ligne);
  position:relative;z-index:10;
}
.entete-barre{display:flex;align-items:center;gap:1.5rem;min-height:4rem}
.logo{
  font-family:var(--display);font-size:1.45rem;font-weight:700;
  color:var(--encre);text-decoration:none;letter-spacing:-.01em;white-space:nowrap;
}
.logo b{color:var(--tampon);font-weight:700}
.nav-principale{margin-left:auto}
.nav-principale ul{display:flex;gap:1.4rem;list-style:none;margin:0;padding:0}
.nav-principale a{
  color:var(--encre-2);text-decoration:none;font-size:.95rem;font-weight:500;
  padding:.4rem 0;border-bottom:2px solid transparent;
}
.nav-principale a:hover,.nav-principale a[aria-current="page"]{color:var(--encre);border-bottom-color:var(--tampon)}
.nav-bascule{display:none}
.nav-etiquette{display:none;margin-left:auto;cursor:pointer;padding:.5rem;border:1px solid var(--ligne);border-radius:6px;line-height:0}
.nav-etiquette svg{display:block}

@media (max-width:47.9rem){
  .nav-etiquette{display:block}
  .nav-principale{
    display:none;position:absolute;left:0;right:0;top:100%;
    background:var(--carte);border-bottom:1px solid var(--ligne);
    padding:.5rem 1.25rem 1rem;
  }
  .nav-bascule:checked ~ .nav-principale{display:block}
  .nav-principale ul{flex-direction:column;gap:0}
  .nav-principale a{display:block;padding:.65rem 0;border-bottom:1px solid var(--filet);width:100%}
}

/* ---------- Fil d'Ariane ---------- */
.ariane{font-size:.85rem;color:var(--encre-2);padding:1rem 0 0}
.ariane ol{list-style:none;display:flex;flex-wrap:wrap;gap:.35rem;margin:0;padding:0}
.ariane li+li::before{content:"›";margin-right:.35rem;color:var(--ligne)}
.ariane a{color:var(--encre-2)}

/* ---------- Héros : spécimen de chèque ---------- */
.heros{padding:3rem 0 3.5rem;border-bottom:1px solid var(--ligne);
  background:
    repeating-linear-gradient(-45deg,transparent 0 14px,rgba(183,205,212,.14) 14px 15px),
    var(--papier);
}
.heros h1{font-family:var(--display);font-size:clamp(1.9rem,4.5vw,3rem);line-height:1.15;margin:.25rem 0 1rem;letter-spacing:-.015em}
.heros p{max-width:44rem;font-size:1.125rem;color:var(--encre-2);margin:0 0 1.75rem}
.eyebrow{font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--tampon)}

.specimen{
  background:linear-gradient(135deg,#FDFEFD 0%,#F1F6F3 60%,#EDF3F1 100%);
  border:1px solid var(--ligne);border-radius:8px;
  box-shadow:0 10px 30px rgba(22,38,61,.08);
  padding:1.25rem 1.5rem 1rem;max-width:44rem;margin-top:2.25rem;
  position:relative;overflow:hidden;
}
.specimen::after{
  content:"SPÉCIMEN";position:absolute;top:38%;left:22%;transform:rotate(-14deg);
  font-family:var(--mono);font-size:2.2rem;letter-spacing:.35em;
  color:rgba(178,58,42,.14);pointer-events:none;
}
.specimen-haut{display:flex;justify-content:space-between;gap:1rem;font-size:.8rem;color:var(--encre-2)}
.specimen-banque{font-family:var(--display);font-weight:700;color:var(--encre);font-size:.95rem}
.specimen-montant{border:1px solid var(--ligne);border-radius:4px;padding:.15rem .6rem;font-family:var(--mono);background:#fff;white-space:nowrap}
.specimen-ligne{border-bottom:1px dashed var(--ligne);padding:.55rem 0 .2rem;font-size:.85rem;color:var(--encre-2);display:flex;gap:.5rem}
.specimen-ligne b{color:var(--encre);font-weight:600;white-space:nowrap}
.specimen-ligne span{font-family:var(--display);font-style:italic;color:var(--encre)}
.specimen-pied{display:flex;justify-content:space-between;align-items:flex-end;margin-top:.8rem;gap:1rem}
.specimen-micr{font-family:var(--mono);font-size:.9rem;letter-spacing:.18em;color:var(--encre-2)}
.specimen-signature{font-family:var(--display);font-style:italic;font-size:1.15rem;color:var(--encre);border-bottom:1px solid var(--ligne);padding:0 1.2rem .1rem}
@media (max-width:34rem){.specimen-micr{font-size:.7rem;letter-spacing:.08em}}

/* ---------- Boutons ---------- */
.bouton{
  display:inline-block;background:var(--tampon);color:#fff;text-decoration:none;
  font-weight:600;font-size:.98rem;padding:.7rem 1.3rem;border-radius:6px;
}
.bouton:hover{background:#933023;color:#fff}
.bouton-second{background:transparent;color:var(--encre);border:1.5px solid var(--encre-2)}
.bouton-second:hover{background:var(--carte);color:var(--encre)}
.actions{display:flex;gap:.8rem;flex-wrap:wrap}

/* ---------- Sections & cartes ---------- */
.section{padding:3rem 0}
.section-titre{font-family:var(--display);font-size:clamp(1.5rem,3vw,2.1rem);margin:.2rem 0 1.5rem;letter-spacing:-.01em}
.grille{display:grid;gap:1.1rem;grid-template-columns:repeat(auto-fill,minmax(15.5rem,1fr))}
.carte{
  background:var(--carte);border:1px solid var(--filet);border-radius:8px;
  padding:1.25rem 1.25rem 1.1rem;display:flex;flex-direction:column;gap:.4rem;
}
.carte h3{font-family:var(--display);font-size:1.12rem;margin:0}
.carte h3 a{color:var(--encre);text-decoration:none}
.carte h3 a:hover{color:var(--tampon)}
.carte p{margin:0;font-size:.93rem;color:var(--encre-2)}
.carte .suite{margin-top:auto;padding-top:.5rem;font-size:.88rem;font-weight:600}

/* ---------- Contenu d'article ---------- */
.article{background:var(--carte);border:1px solid var(--filet);border-radius:10px;
  padding:2.25rem clamp(1.25rem,4vw,3rem);margin:1.5rem 0 3rem}
.article h1{font-family:var(--display);font-size:clamp(1.7rem,3.6vw,2.5rem);line-height:1.18;margin:0 0 .6rem;letter-spacing:-.015em}
.article .chapo{font-size:1.15rem;color:var(--encre-2);margin:0 0 2rem}
.article h2{font-family:var(--display);font-size:1.45rem;margin:2.2rem 0 .7rem;padding-top:1.2rem;border-top:1px solid var(--filet)}
.article h3{font-size:1.08rem;margin:1.4rem 0 .4rem}
.article ul,.article ol{padding-left:1.3rem}
.article li{margin:.35rem 0}
.article table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.95rem}
.article th,.article td{text-align:left;padding:.6rem .7rem;border-bottom:1px solid var(--filet);vertical-align:top}
.article th{font-family:var(--mono);font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--encre-2)}
.article thead th{border-bottom:2px solid var(--ligne)}
.encadre{background:var(--papier);border-left:4px solid var(--tampon);border-radius:0 6px 6px 0;padding:.9rem 1.1rem;margin:1.2rem 0;font-size:.97rem}
.encadre b:first-child{font-family:var(--mono);font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;color:var(--tampon);display:block;margin-bottom:.25rem}

/* Étapes numérotées : la numérotation reflète un vrai ordre de démarche */
.etapes{list-style:none;counter-reset:etape;padding:0;margin:1.2rem 0}
.etapes li{counter-increment:etape;position:relative;padding:0 0 1.1rem 3rem;margin:0}
.etapes li::before{
  content:counter(etape);position:absolute;left:0;top:.05rem;
  width:2rem;height:2rem;border:1.5px solid var(--tampon);border-radius:50%;
  display:grid;place-items:center;font-family:var(--mono);font-size:.9rem;color:var(--tampon);
}
.etapes li:not(:last-child)::after{
  content:"";position:absolute;left:.97rem;top:2.35rem;bottom:.15rem;width:1px;background:var(--filet);
}
.etapes b{display:block}

/* ---------- FAQ ---------- */
.faq details{background:var(--carte);border:1px solid var(--filet);border-radius:8px;margin:.6rem 0;padding:0}
.faq summary{cursor:pointer;font-weight:600;padding:.9rem 1.1rem;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:1.1rem;font-family:var(--mono);color:var(--tampon)}
.faq details[open] summary::after{content:"–"}
.faq details>div{padding:0 1.1rem 1rem;color:var(--encre-2)}

/* ---------- Maillage / liens connexes ---------- */
.connexes{margin:2.5rem 0 0;padding-top:1.4rem;border-top:2px solid var(--ligne)}
.connexes h2{border:0!important;padding-top:0!important;font-size:1.2rem!important}
.connexes ul{list-style:none;padding:0;display:grid;gap:.4rem .5rem;grid-template-columns:repeat(auto-fill,minmax(14rem,1fr))}
.connexes a{font-size:.95rem}

/* ---------- Lexique ---------- */
.lexique dt{font-family:var(--display);font-weight:700;font-size:1.08rem;margin-top:1.2rem}
.lexique dd{margin:.2rem 0 0;color:var(--encre-2)}

/* ---------- Pied de page ---------- */
.pied{background:var(--encre);color:#C6D2E2;margin-top:2rem}
.pied-grille{display:grid;gap:2rem;grid-template-columns:repeat(auto-fit,minmax(11rem,1fr));padding:2.75rem 0 2rem}
.pied h2{font-family:var(--mono);font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:#8FA3BE;margin:0 0 .8rem}
.pied ul{list-style:none;margin:0;padding:0}
.pied li{margin:.4rem 0}
.pied a{color:#C6D2E2;text-decoration:none;font-size:.92rem}
.pied a:hover{color:#fff;text-decoration:underline}
.pied-bas{border-top:1px solid #2C405E;padding:1.1rem 0 1.4rem;display:flex;flex-wrap:wrap;gap:.75rem 1.5rem;justify-content:space-between;font-size:.85rem;color:#8FA3BE}
.pied-micr{font-family:var(--mono);letter-spacing:.2em;font-size:.8rem}

/* ---------- Divers ---------- */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.maj{font-family:var(--mono);font-size:.8rem;color:var(--encre-2);margin-top:2rem}