:root{
  --petrol:#0E4A57; --petrol-deep:#083640; --ink:#1B2426; --ink-soft:#4A5657;
  --paper:#F5F6F3; --white:#FFFFFF; --mint:#E4EEEB; --rule:#CBD3CF; --amber:#B8771E; --amber-deep:#8F5A12;
  --serif:"Newsreader",Georgia,"Times New Roman",serif;
  --sans:"Public Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --measure:66ch;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.6}
a{color:var(--petrol);text-underline-offset:.15em}
a:hover{color:var(--petrol-deep)}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
.skip{position:absolute;left:-999px;top:0;background:var(--amber);color:#fff;padding:.5rem 1rem}
.skip:focus{left:1rem;z-index:10}
.wrap{max-width:1120px;margin:0 auto;padding:0 clamp(1rem,4vw,2.5rem)}

/* En-tête */
.site-header{background:var(--white);border-bottom:1px solid var(--rule)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;min-height:68px;flex-wrap:wrap}
.brand{display:inline-flex;align-items:center;gap:.6rem;font-family:var(--serif);font-size:1.45rem;font-weight:500;color:var(--ink);text-decoration:none;letter-spacing:-.01em;padding:.75rem 0}
.brand em{font-style:italic;color:var(--petrol)}
.site-header nav{display:flex;gap:1.1rem;flex-wrap:wrap;padding:.5rem 0}
.site-header nav a{text-decoration:none;color:var(--ink-soft);font-weight:500;font-size:.95rem;padding:.35rem 0;border-bottom:2px solid transparent}
.site-header nav a:hover{color:var(--petrol);border-bottom-color:var(--petrol)}

/* Titres */
h1,h2,h3{font-family:var(--serif);font-weight:500;line-height:1.15;letter-spacing:-.012em;color:var(--ink)}
h1{font-size:clamp(2rem,4.2vw,3rem);margin:0 0 .6rem}
h2{font-size:clamp(1.45rem,2.6vw,1.85rem);margin:2.4rem 0 .8rem}
h3{font-size:1.2rem;margin:1.8rem 0 .5rem}
.lead{font-family:var(--serif);font-size:clamp(1.15rem,2vw,1.35rem);line-height:1.45;color:var(--ink-soft);max-width:var(--measure);margin:0 0 1rem}
.updated{font-size:.85rem;color:var(--ink-soft);margin:0 0 .5rem}

/* Article */
.article-head{padding:2.75rem 0 1.5rem;border-bottom:1px solid var(--rule);margin-bottom:2rem}
.article-body{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:3.5rem;align-items:start;padding-bottom:4rem}
.prose{max-width:var(--measure)}
.prose p,.prose li{max-width:var(--measure)}
.prose ul,.prose ol{padding-left:1.3rem}
.prose li{margin:.35rem 0}
.prose blockquote{margin:1.5rem 0;padding:1rem 1.25rem;background:var(--white);border-left:4px solid var(--petrol);font-size:.97rem}
.prose blockquote p{margin:.3rem 0}
.prose table{border-collapse:collapse;width:100%;font-size:.93rem;margin:1.2rem 0;background:var(--white)}
.prose th,.prose td{border:1px solid var(--rule);padding:.55rem .7rem;text-align:left;vertical-align:top}
.prose th{background:var(--mint);font-weight:600}
.prose code{font-family:var(--sans);background:var(--mint);padding:.05em .35em;border-radius:3px;font-size:.92em}
.prose .loi{background:var(--white);border:1px solid var(--rule);border-top:3px solid var(--petrol);padding:1rem 1.25rem;margin:1.5rem 0;font-size:.95rem}
.prose .loi p{margin:.35rem 0}
.prose .attention{background:#FBF3E6;border-left:4px solid var(--amber);padding:.9rem 1.2rem;margin:1.5rem 0}
.prose .attention p{margin:.3rem 0}
.prose .verif{background:var(--mint);padding:.9rem 1.2rem;margin:1.5rem 0;font-size:.93rem}
.prose .verif p{margin:.3rem 0}

/* Repères — l'élément signature : les chiffres que le lecteur cherche, tout de suite */
.reperes{position:sticky;top:1.5rem;border-left:5px solid var(--petrol);padding:0 0 0 1.25rem}
.reperes h2{font-size:1rem;font-family:var(--sans);font-weight:600;margin:0 0 1rem;color:var(--ink-soft)}
.repere{margin:0 0 1.25rem}
.repere strong{display:block;font-family:var(--serif);font-weight:500;font-size:1.9rem;line-height:1.05;color:var(--petrol);letter-spacing:-.02em}
.repere span{display:block;font-size:.9rem;color:var(--ink-soft);margin-top:.2rem;line-height:1.35}

/* Appels à l'action */
.cta{margin:3rem 0 0;padding:1.75rem;background:var(--petrol);color:#fff}
.cta h2{color:#fff;margin:0 0 .5rem;font-size:1.5rem}
.cta p{color:#DCE8EA;margin:0 0 1.2rem;max-width:var(--measure)}
.button{display:inline-block;background:var(--amber);color:#fff;font-weight:600;text-decoration:none;padding:.7rem 1.2rem;margin:0 .6rem .6rem 0;font-size:.97rem}
.button:hover{background:var(--amber-deep);color:#fff}
.button.secondary{background:transparent;border:1.5px solid #9FBEC4;color:#fff}
.button.secondary:hover{background:rgba(255,255,255,.08)}
.prose .button{color:#fff}

/* Accueil */
.page-home .article-head{border-bottom:0;padding-top:3.5rem;margin-bottom:0}
.page-home .updated{display:none}
.page-home .article-body{display:block}
.page-home .prose{max-width:none}
.hero{max-width:52rem;padding-bottom:2.5rem}
.hero h1{font-size:clamp(2.3rem,5.2vw,3.6rem);margin-bottom:1rem}
.situations{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--rule);border:1px solid var(--rule);margin:0 0 3rem}
.situations a{display:block;background:var(--white);padding:1.25rem 1.25rem 1.4rem;text-decoration:none;color:var(--ink);min-height:150px}
.situations a:hover{background:var(--mint)}
.situations strong{display:block;font-family:var(--serif);font-size:1.25rem;font-weight:500;margin-bottom:.35rem;line-height:1.2}
.situations span{display:block;font-size:.9rem;color:var(--ink-soft);line-height:1.4}
.situations .num{font-family:var(--serif);color:var(--petrol);font-size:1.6rem;display:block;margin-bottom:.25rem;line-height:1}
.home-cols{display:grid;grid-template-columns:1fr 1fr;gap:3rem;margin:1rem 0 3rem}
.home-cols h2{margin-top:0}
.home-cols ul{list-style:none;padding:0;margin:0}
.home-cols li{padding:.55rem 0;border-bottom:1px solid var(--rule)}
.home-cols li a{text-decoration:none;font-weight:500}
.home-cols li a:hover{text-decoration:underline}
.methode{background:var(--white);border:1px solid var(--rule);padding:1.5rem 1.75rem;margin:0 0 3rem;max-width:52rem}
.methode p{margin:.4rem 0}

/* Outils */
.tool{background:var(--white);border:1px solid var(--rule);padding:1.5rem;margin:1.5rem 0 2rem;max-width:44rem}
.tool fieldset{border:0;padding:0;margin:0 0 1.1rem}
.tool legend,.tool label{display:block;font-weight:600;font-size:.95rem;margin-bottom:.35rem}
.tool input[type=number],.tool input[type=date],.tool select{width:100%;max-width:22rem;font:inherit;font-size:16px;padding:.55rem .7rem;border:1px solid #9AA6A3;background:#fff;color:var(--ink)}
.tool .radio{display:flex;flex-wrap:wrap;gap:.5rem 1.2rem}
.tool .radio label{font-weight:400;display:flex;align-items:center;gap:.4rem;margin:0}
.tool .hint{font-size:.85rem;color:var(--ink-soft);margin:.25rem 0 0}
.tool button{font:inherit;font-weight:600;background:var(--petrol);color:#fff;border:0;padding:.75rem 1.3rem;cursor:pointer;font-size:1rem}
.tool button:hover{background:var(--petrol-deep)}
.result{border-left:5px solid var(--petrol);padding:.25rem 0 .25rem 1.25rem;margin:1.5rem 0}
.result .big{font-family:var(--serif);font-size:2.4rem;color:var(--petrol);line-height:1.05;margin:.2rem 0 .4rem}
.result table{font-size:.93rem;margin-top:1rem}
.result[hidden]{display:none}
.tools-list{list-style:none;padding:0;margin:1.5rem 0;display:grid;gap:1px;background:var(--rule);border:1px solid var(--rule);max-width:52rem}
.tools-list li{background:var(--white);padding:1.25rem}
.tools-list a{font-family:var(--serif);font-size:1.3rem;text-decoration:none;font-weight:500}
.tools-list p{margin:.35rem 0 0;font-size:.95rem;color:var(--ink-soft)}
.tools-list .bientot{opacity:.6}

/* Pied de page */
.site-footer{background:var(--white);border-top:1px solid var(--rule);padding:3rem 0 2rem;font-size:.92rem;color:var(--ink-soft)}
.foot-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:1.5rem}
.foot-cols p{margin:.3rem 0}
.foot-brand{font-family:var(--serif);font-size:1.2rem;color:var(--ink)}
.disclaimer{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--rule);font-size:.82rem;max-width:70ch}

@media (max-width:900px){
  .situations{grid-template-columns:1fr 1fr}
  .site-header nav{gap:.4rem 1rem;padding:0 0 .6rem}
  .site-header nav a{font-size:.9rem;padding:.15rem 0}
  .brand{display:inline-flex;align-items:center;gap:.6rem;padding:.6rem 0 .3rem}
  .article-body{grid-template-columns:1fr;gap:2rem}
  .reperes{position:static;border-left:0;border-top:5px solid var(--petrol);padding:1rem 0 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;order:-1}
  .reperes h2{grid-column:1/-1;margin-bottom:0}
  .repere strong{font-size:1.5rem}
  .home-cols,.foot-cols{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
@media print{.site-header nav,.cta,.site-footer{display:none}}

@media (max-width:560px){.situations{grid-template-columns:1fr}.situations a{min-height:0}}

.figure{margin:1.5rem 0 2rem;max-width:760px}
.figure img{width:100%;height:auto;display:block;background:var(--white);border:1px solid var(--rule);padding:.75rem}
.figure figcaption{font-size:.85rem;color:var(--ink-soft);margin-top:.5rem}
 .crumbs{font-size:.85rem;color:var(--ink-soft);margin:0 0 1rem}
 .crumbs a{color:var(--ink-soft);text-decoration:none}
 .crumbs a:hover{color:var(--petrol);text-decoration:underline}
 .crumbs span{color:var(--ink)}
 .prose .modele{background:var(--white);border:1px solid var(--rule);border-left:4px solid var(--amber);padding:1.5rem 1.75rem;margin:1.5rem 0;font-size:.95rem;white-space:normal}
 .prose .modele p{margin:.6rem 0}
 .prose .source,.prose em small{color:var(--ink-soft)}
 .page-hub .article-body{display:block}
 .page-hub .prose{max-width:none}
 .page-hub .situations{margin-top:1rem}
 .pub-slot{min-height:250px;margin:2rem 0;background:var(--mint);border:1px dashed var(--rule);display:flex;align-items:center;justify-content:center}
 .pub-slot::after{content:"Publicité";color:var(--ink-soft);font-size:.8rem}