:root{
  color-scheme:light dark;
  --page-bg:#fff;--surface:#fff;--surface-alt:#f8fafc;--surface-raised:#fff;--surface-hover:#f1f5f9;
  --text-primary:#0f172a;--text-strong:#1e293b;--text-secondary:#475569;--text-muted:#64748b;--text-faint:#94a3b8;
  --border:#e2e8f0;--border-strong:#cbd5e1;--emerald-50:#ecfdf5;--emerald-100:#d1fae5;--emerald-400:#34d399;--emerald-500:#10b981;--emerald-600:#059669;--emerald-700:#047857;
  --amber-50:#fffbeb;--amber-200:#fde68a;--amber-700:#b45309;--blue-50:#eff6ff;--blue-600:#2563eb;
  --shadow-card:0 1px 2px rgba(15,23,42,.04),0 12px 32px rgba(15,23,42,.055);--shadow-hover:0 18px 44px rgba(15,23,42,.1);
  --radius:1rem;--radius-sm:.7rem;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;--font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
[data-theme="dark"]{
  --page-bg:#0a0f1a;--surface:#131b2c;--surface-alt:#0f1626;--surface-raised:#151f33;--surface-hover:#1a2338;
  --text-primary:#f1f5f9;--text-strong:#e2e8f0;--text-secondary:#cbd5e1;--text-muted:#94a3b8;--text-faint:#64748b;
  --border:#26314a;--border-strong:#3a4a6b;--emerald-50:#0d2b22;--emerald-100:#10372c;--emerald-700:#34d399;
  --amber-50:#2a2110;--amber-200:#5c4813;--amber-700:#fbbf24;--blue-50:#12233d;--blue-600:#93c5fd;
  --shadow-card:0 1px 3px rgba(0,0,0,.35),0 16px 40px rgba(0,0,0,.18);--shadow-hover:0 20px 48px rgba(0,0,0,.35);
}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --page-bg:#0a0f1a;--surface:#131b2c;--surface-alt:#0f1626;--surface-raised:#151f33;--surface-hover:#1a2338;
  --text-primary:#f1f5f9;--text-strong:#e2e8f0;--text-secondary:#cbd5e1;--text-muted:#94a3b8;--text-faint:#64748b;
  --border:#26314a;--border-strong:#3a4a6b;--emerald-50:#0d2b22;--emerald-100:#10372c;--emerald-700:#34d399;
  --amber-50:#2a2110;--amber-200:#5c4813;--amber-700:#fbbf24;--blue-50:#12233d;--blue-600:#93c5fd;
  --shadow-card:0 1px 3px rgba(0,0,0,.35),0 16px 40px rgba(0,0,0,.18);--shadow-hover:0 20px 48px rgba(0,0,0,.35);
}}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--page-bg);overflow-x:hidden;-webkit-text-size-adjust:100%}body{margin:0;min-height:100dvh;background:var(--page-bg);color:var(--text-primary);font-family:var(--font-sans);font-size:1rem;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}a{color:var(--emerald-700);text-decoration-thickness:1px;text-underline-offset:.2em}a:hover{text-decoration-thickness:2px}img,svg{display:block;max-width:100%}:focus-visible{outline:3px solid var(--emerald-500);outline-offset:3px}.container,.wrap{width:min(100% - 2rem,72rem);margin-inline:auto}.skip-link{position:fixed;z-index:100;left:1rem;top:-5rem;padding:.7rem 1rem;border-radius:.5rem;background:var(--text-primary);color:var(--page-bg);font-weight:700}.skip-link:focus{top:1rem}

/* En-tête commun */
.site-header{position:sticky;z-index:30;top:0;border-bottom:1px solid var(--border);background:color-mix(in srgb,var(--page-bg) 88%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}.header-inner{min-height:4.35rem;display:flex;align-items:center;gap:1.15rem}.brand{display:inline-flex;align-items:center;font:750 1.05rem/1 var(--font-mono);letter-spacing:-.03em;color:var(--text-primary);text-decoration:none;white-space:nowrap}.brand span,.brand em{color:var(--emerald-600);font-style:normal}.primary-nav{display:flex;align-items:center;gap:.2rem;margin-left:auto}.primary-nav a{padding:.5rem .65rem;border-radius:.5rem;color:var(--text-secondary);font-size:.86rem;font-weight:650;text-decoration:none}.primary-nav a:hover{background:var(--surface-hover);color:var(--text-primary)}.primary-nav .nav-calculator{border:1px solid color-mix(in srgb,var(--emerald-600) 40%,var(--border));background:var(--emerald-50);color:var(--emerald-700)}.theme-toggle,.nav-toggle{display:inline-flex;align-items:center;justify-content:center;min-height:2.25rem;border:1px solid var(--border);border-radius:.58rem;background:var(--surface);color:var(--text-primary);font:650 .85rem var(--font-sans);cursor:pointer}.theme-toggle{width:2.35rem}.nav-toggle{display:none;padding:.45rem .75rem}

/* Hero éditorial */
.hero-band{position:relative;isolation:isolate;overflow:hidden;border-bottom:1px solid var(--border);background:linear-gradient(145deg,var(--surface-alt),color-mix(in srgb,var(--emerald-50) 35%,var(--page-bg)))}.hero-band::before{content:"";position:absolute;z-index:-1;right:-9rem;top:-15rem;width:34rem;height:34rem;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--emerald-500) 16%,transparent),transparent 68%);pointer-events:none}.breadcrumb{padding-top:1.25rem}.breadcrumb ol{display:flex;gap:.45rem;flex-wrap:wrap;padding:0;margin:0;list-style:none;color:var(--text-muted);font-size:.8rem}.breadcrumb li{display:flex;align-items:center}.breadcrumb li:not(:last-child)::after{content:"/";margin-left:.45rem;color:var(--text-faint)}.breadcrumb a{color:var(--text-secondary)}.page-hero{max-width:58rem;padding:3.25rem 0 3rem}.eyebrow,.section-kicker{margin:0;color:var(--emerald-700);text-transform:uppercase;letter-spacing:.095em;font-size:.72rem;font-weight:800}.page-hero h1{max-width:55rem;margin:.65rem 0 1rem;font-size:clamp(2.1rem,5.5vw,3.65rem);line-height:1.07;letter-spacing:-.042em;text-wrap:balance}.lead{max-width:48rem;margin:0;color:var(--text-secondary);font-size:clamp(1.05rem,2.2vw,1.23rem);line-height:1.65}.hero-meta{display:flex;align-items:center;gap:.6rem 1.2rem;flex-wrap:wrap;margin-top:1.15rem;color:var(--text-muted);font-size:.8rem}.hero-meta span{display:inline-flex;align-items:center;gap:.4rem}.hero-meta span+span::before{content:"";width:.35rem;height:.35rem;border-radius:50%;background:var(--emerald-500)}.hero-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.75rem;margin-top:2rem}.hero-stat{min-width:0;padding:1rem 1.05rem;border:1px solid color-mix(in srgb,var(--emerald-600) 24%,var(--border));border-radius:.85rem;background:color-mix(in srgb,var(--surface) 82%,transparent);box-shadow:0 1px 1px rgba(15,23,42,.04)}.hero-stat span,.hero-stat small{display:block;color:var(--text-muted);font-size:.72rem}.hero-stat strong{display:block;margin:.15rem 0;color:var(--text-primary);font:750 clamp(1.08rem,2.2vw,1.35rem)/1.25 var(--font-mono);letter-spacing:-.025em}

/* Grille éditoriale et cartes */
.editorial-main{padding-bottom:5rem}.page-layout{display:grid;grid-template-columns:minmax(0,1fr);padding-top:2.4rem}.page-layout.has-toc{gap:2rem}.article-content{width:100%;max-width:51rem;min-width:0}.template-category .article-content{max-width:none}.card{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-card)}.content-section{position:relative;margin:0 0 1.25rem;padding:clamp(1.35rem,3vw,2rem);scroll-margin-top:5.5rem}.content-section h2,.related h2,.calculator-cta h2,.inline-cta h2{margin:0 0 .75rem;color:var(--text-primary);font-size:clamp(1.3rem,2.8vw,1.72rem);line-height:1.25;letter-spacing:-.02em}.content-section h3{margin:1.65rem 0 .45rem;color:var(--text-strong);font-size:1.08rem;line-height:1.35}.content-section p{margin:.75rem 0;color:var(--text-secondary)}.content-section>p:first-of-type{margin-top:.4rem}.content-section strong{color:var(--text-strong)}.content-section ul,.content-section ol{padding-left:1.25rem;color:var(--text-secondary)}.content-section li{padding-left:.2rem}.content-section li+li{margin-top:.5rem}.content-section li::marker{color:var(--emerald-600)}.section-heading{margin-bottom:1rem}.section-heading h2{margin-top:.25rem}

/* Sommaire */
.page-layout:not(.has-toc) .article-content{margin-inline:auto}
.toc-wrap{min-width:0}.toc{padding:1rem}.toc-title{margin:0 0 .65rem;color:var(--text-primary);font-size:.82rem;font-weight:750}.toc ol{margin:0;padding:0;list-style:none}.toc li+li{margin-top:.15rem}.toc a{display:block;padding:.38rem .5rem;border-left:2px solid var(--border);color:var(--text-muted);font-size:.78rem;line-height:1.35;text-decoration:none}.toc a:hover{border-color:var(--emerald-500);background:var(--emerald-50);color:var(--text-primary)}

/* Tableaux */
.table-wrap{max-width:100%;margin:1.25rem 0;overflow-x:auto;border:1px solid var(--border);border-radius:.85rem;background:var(--surface);-webkit-overflow-scrolling:touch}table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}caption{text-align:left;padding:.85rem 1rem;border-bottom:1px solid var(--border);background:var(--surface-alt);color:var(--text-strong);font-weight:750}th,td{padding:.78rem 1rem;border-bottom:1px solid var(--border);text-align:left;white-space:nowrap}th{background:var(--surface-alt);color:var(--text-muted);font-size:.72rem;text-transform:uppercase;letter-spacing:.05em}td{color:var(--text-secondary);font-size:.9rem}tbody tr:nth-child(even){background:color-mix(in srgb,var(--surface-alt) 55%,transparent)}tbody tr:hover{background:var(--emerald-50)}tbody tr:last-child td{border-bottom:0}.number{text-align:right;font-family:var(--font-mono);font-size:.85rem}

/* Encadrés */
.callout-info,.callout-warning,.callout-success,.example-box,.method-box,.note,.method-note{position:relative;margin:1rem 0;padding:1rem 1.05rem 1rem 1.2rem;border:1px solid var(--border);border-left:4px solid var(--blue-600);border-radius:.75rem;background:var(--blue-50);color:var(--text-secondary)}.callout-warning,.warning.note{border-color:var(--amber-200);border-left-color:var(--amber-700);background:var(--amber-50)}.callout-success{border-left-color:var(--emerald-600);background:var(--emerald-50)}.example-box{border-left-color:var(--emerald-600);background:linear-gradient(135deg,var(--emerald-50),var(--surface-alt))}.method-box,.method-note{border-left-color:var(--text-faint);background:var(--surface-alt)}.example-box p:first-child{font-size:1.04rem}.example-box p:last-child{margin-bottom:0}

/* CTA */
.button{display:inline-flex;align-items:center;justify-content:center;gap:.55rem;min-height:2.75rem;padding:.7rem 1.05rem;border:1px solid transparent;border-radius:.68rem;background:var(--emerald-600);box-shadow:0 7px 18px color-mix(in srgb,var(--emerald-600) 22%,transparent);color:#fff;text-decoration:none;font-weight:750}.button:hover{background:var(--emerald-700);text-decoration:none;transform:translateY(-1px)}.inline-cta{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;margin:1.25rem 0;padding:1.35rem 1.5rem;border-color:color-mix(in srgb,var(--emerald-600) 45%,var(--border));background:linear-gradient(135deg,var(--emerald-50),var(--surface))}.inline-cta h2{margin:.2rem 0 .35rem;font-size:1.25rem}.inline-cta p:not(.section-kicker){max-width:36rem;margin:0;color:var(--text-secondary);font-size:.9rem}.inline-cta .button{flex:0 0 auto}.calculator-cta{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:1.25rem;margin:1.25rem 0;padding:1.5rem;border:1px solid color-mix(in srgb,var(--emerald-500) 50%,var(--border));border-radius:var(--radius);background:linear-gradient(135deg,var(--text-primary),color-mix(in srgb,var(--text-primary) 88%,var(--emerald-600)));box-shadow:var(--shadow-card);color:var(--page-bg)}.calculator-cta .cta-icon{display:grid;width:3rem;height:3rem;place-items:center;border:1px solid rgba(255,255,255,.22);border-radius:.8rem;background:rgba(255,255,255,.1);color:var(--emerald-400);font:750 1.4rem var(--font-mono)}.calculator-cta h2{margin:.2rem 0 .3rem;color:var(--page-bg);font-size:1.35rem}.calculator-cta p:not(.section-kicker){max-width:38rem;margin:0;color:color-mix(in srgb,var(--page-bg) 76%,transparent);font-size:.9rem}.calculator-cta .section-kicker{color:var(--emerald-400)}.calculator-cta .button{white-space:nowrap}

/* Catégories et liens */
.calculator-cta{border-color:color-mix(in srgb,var(--emerald-500) 50%,#334155);background:linear-gradient(135deg,#0f172a,#13233b);color:#f8fafc}.calculator-cta h2{color:#f8fafc}.calculator-cta p:not(.section-kicker){color:#cbd5e1}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin:1rem 0 2.25rem}.link-card{position:relative;min-width:0;padding:1.3rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-card);transition:border-color .15s,box-shadow .15s,transform .15s}.link-card:hover{border-color:color-mix(in srgb,var(--emerald-600) 45%,var(--border));box-shadow:var(--shadow-hover);transform:translateY(-2px)}.link-card h2{margin:0 0 .5rem;font-size:1.02rem;line-height:1.35}.link-card p{margin:0;color:var(--text-muted);font-size:.88rem}.link-card a{color:var(--text-primary);text-decoration:none}.link-card a::after{content:" →";color:var(--emerald-600)}.related{margin:1.25rem 0;padding:1.5rem}.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem}.related-card{position:relative;display:flex;min-height:6.2rem;flex-direction:column;justify-content:center;padding:1rem 2.4rem 1rem 1rem;border:1px solid var(--border);border-radius:.75rem;background:var(--surface-alt);color:var(--text-primary);text-decoration:none}.related-card:hover{border-color:var(--emerald-500);background:var(--emerald-50);text-decoration:none}.related-category{margin-bottom:.28rem;color:var(--text-muted);font-size:.67rem;text-transform:uppercase;letter-spacing:.07em}.related-card strong{font-size:.92rem;line-height:1.35}.related-arrow{position:absolute;right:1rem;top:50%;color:var(--emerald-600);font-size:1.2rem;transform:translateY(-50%)}.pager{display:flex;justify-content:space-between;gap:1rem;margin:1.25rem 0}.pager a{max-width:48%;padding:.7rem .9rem;border:1px solid var(--border);border-radius:.7rem;background:var(--surface);color:var(--text-secondary);font-size:.83rem;text-decoration:none}.pager a:hover{border-color:var(--emerald-500);color:var(--text-primary)}

/* FAQ */
.related-card{min-height:7.5rem}.related-card small{display:block;margin-top:.32rem;color:var(--text-muted);font-size:.72rem;line-height:1.4;font-weight:400}
.faq-block details{border-top:1px solid var(--border)}.faq-block details:last-child{border-bottom:1px solid var(--border)}.faq-block summary{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem .2rem;cursor:pointer;list-style:none;color:var(--text-strong);font-weight:700}.faq-block summary::-webkit-details-marker{display:none}.faq-block summary span{display:grid;width:1.55rem;height:1.55rem;flex:0 0 auto;place-items:center;border-radius:50%;background:var(--surface-alt);color:var(--emerald-700);font-size:1rem}.faq-block details[open] summary span{transform:rotate(45deg)}.faq-block details p{margin:0;padding:0 2.2rem 1rem 0;color:var(--text-secondary)}

/* Outils */
.tool-panel{margin-bottom:1.25rem;padding:1.6rem;border:1px solid color-mix(in srgb,var(--emerald-600) 32%,var(--border));border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-card)}.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.tool-field label{display:block;margin-bottom:.35rem;color:var(--text-strong);font-size:.85rem;font-weight:650}.tool-field input,.tool-field select{width:100%;min-height:2.75rem;border:1px solid var(--border-strong);border-radius:.62rem;padding:.62rem .75rem;background:var(--page-bg);color:var(--text-primary);font:inherit}.tool-field input:focus,.tool-field select:focus{border-color:var(--emerald-500);outline:none;box-shadow:0 0 0 3px color-mix(in srgb,var(--emerald-500) 16%,transparent)}.tool-result{display:block;margin:1.3rem 0 0;padding:1.25rem;border:1px solid color-mix(in srgb,var(--emerald-600) 28%,var(--border));border-radius:.8rem;background:var(--emerald-50)}.tool-result>span{display:block;color:var(--text-muted);font-size:.8rem}.tool-result strong{display:block;margin:.1rem 0;color:var(--emerald-700);font:750 clamp(1.5rem,5vw,2.2rem)/1.25 var(--font-mono)}.tool-result p{margin:.35rem 0 0;color:var(--text-secondary);font-size:.85rem}

/* Pied de page */
.email-protected{display:inline-flex;align-items:center;gap:.6rem}.protected-email{display:inline-flex;align-items:center;min-height:2.5rem;padding:.55rem .8rem;border:1px solid color-mix(in srgb,var(--emerald-600) 38%,var(--border));border-radius:.62rem;background:var(--emerald-50);font-family:var(--font-mono);font-size:.88rem;font-weight:700;text-decoration:none}.protected-email:hover{border-color:var(--emerald-500);background:var(--emerald-100);text-decoration:none}
.site-footer{margin-top:1rem;padding:3rem 0 1.2rem;border-top:1px solid var(--border);background:var(--surface-alt)}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:3rem}.footer-about p{max-width:25rem;margin:.8rem 0;color:var(--text-secondary);font-size:.88rem}.footer-about .footer-disclaimer{color:var(--text-muted);font-size:.76rem}.footer-grid nav{display:flex;flex-direction:column;align-items:flex-start;gap:.42rem}.footer-grid nav p{margin:0 0 .4rem;color:var(--text-strong);font-size:.8rem;font-weight:750;text-transform:uppercase;letter-spacing:.06em}.footer-grid nav a{color:var(--text-secondary);font-size:.84rem}.footer-bottom{display:flex;justify-content:space-between;margin-top:2.2rem;padding-top:1rem;border-top:1px solid var(--border);color:var(--text-muted);font-size:.75rem}

/* Compatibilité visuelle de l’accueil historique */
.home-editorial{padding:2.5rem 0 4rem}.home-editorial>h2{font-size:1.7rem}.home-editorial .card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}header.site .container{gap:1rem;flex-wrap:wrap}header.site .brand{color:var(--text-primary)}.home-nav{display:flex;align-items:center;gap:.25rem;margin-left:auto}.home-nav a{padding:.4rem .48rem;border-radius:.45rem;color:var(--text-secondary);font-size:.78rem;font-weight:650;text-decoration:none}.home-nav a:hover{background:var(--surface-hover);color:var(--emerald-700)}
body.is-embed .site-footer{display:none!important}

@media(min-width:980px){.page-layout.has-toc{grid-template-columns:13.5rem minmax(0,1fr)}.page-layout.has-toc .article-content{max-width:51rem}.toc{position:sticky;top:5.5rem;max-height:calc(100vh - 7rem);overflow:auto}}
@media(max-width:979px){.page-layout.has-toc{gap:1rem}.toc-wrap{order:0}.toc{margin-bottom:.25rem}.toc ol{columns:2;gap:1.5rem}.article-content{max-width:none}}
@media(max-width:760px){.container,.wrap{width:min(100% - 1.25rem,72rem)}.header-inner{min-height:3.9rem;flex-wrap:wrap;padding:.65rem 0}.nav-toggle{display:inline-flex;margin-left:auto}.theme-toggle{margin-left:0}.primary-nav{display:none;order:4;width:100%;margin:0;padding:.55rem 0 .2rem;border-top:1px solid var(--border);flex-direction:column;align-items:stretch}.primary-nav.is-open{display:flex}.primary-nav a{padding:.55rem .3rem}.page-hero{padding:2.35rem 0 2.25rem}.page-hero h1{font-size:clamp(2rem,10.5vw,2.8rem)}.hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.page-layout{padding-top:1.1rem}.content-section,.related{padding:1.2rem}.card-grid,.home-editorial .card-grid,.tool-grid,.footer-grid{grid-template-columns:1fr}.related-grid{grid-template-columns:1fr}.inline-cta{align-items:flex-start;flex-direction:column}.calculator-cta{grid-template-columns:auto minmax(0,1fr)}.calculator-cta .button{grid-column:1/-1;width:100%}.toc ol{columns:1}.pager{flex-direction:column}.pager a{max-width:none}.footer-grid{gap:1.8rem}.footer-bottom{gap:.8rem;flex-direction:column}.home-nav{order:3;width:100%;overflow-x:auto;padding-bottom:.2rem}.home-nav a{white-space:nowrap}}
@media(max-width:420px){.hero-stats{gap:.55rem}.hero-stat{padding:.85rem}.hero-stat strong{font-size:1rem}.content-section,.related,.tool-panel{border-radius:.85rem}.table-wrap{margin-inline:0}.calculator-cta{grid-template-columns:1fr}.calculator-cta .cta-icon{display:none}.pager a{font-size:.78rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}
@media print{.site-header,.site-footer,.breadcrumb,.calculator-cta,.inline-cta,.related,.toc-wrap,.theme-toggle,.nav-toggle{display:none!important}.hero-band{border:0;background:#fff}.editorial-main,.container,.article-content{width:100%;max-width:none;padding:0}.page-hero{padding:0 0 1rem}.content-section{break-inside:avoid;border-color:#d1d5db;box-shadow:none}.page-layout{display:block}.table-wrap{overflow:visible}}