:root{--color-bg:#fff;--color-surface:#f7f9fb;--color-ink:#16191c;--color-muted:#5d6670;--color-line:#e2e6ea;--color-brand:#2287b9;--color-accent:#1b6a92;--color-accent-ink:#fff;--color-good:#2e7d4f;--color-warn:#a86400;--color-bad:#b3261e;--color-year-1:#82b8d8;--color-year-2:#3d8fbf;--color-year-3:#1b5f87;--font-display:"Source Serif 4", Georgia, "Times New Roman", serif;--font-text:system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-mono:ui-monospace, "SF Mono", Menlo, Consolas, monospace;--text-sm:.875rem;--text-base:1.0625rem;--text-lg:1.375rem;--text-xl:1.875rem;--text-2xl:2.75rem;--text-3xl:3.75rem;--text-xs:.75rem;--text-display:clamp(2.5rem, 1.2rem + 5vw, 5.5rem);--space-1:.25rem;--space-2:.5rem;--space-3:1rem;--space-4:2rem;--space-5:4rem;--space-6:8rem;--radius:4px;--max-width:68rem}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--color-bg:#0f1215;--color-surface:#171b20;--color-ink:#e8ecef;--color-muted:#9aa4ae;--color-line:#2a3037;--color-brand:#3f9ccc;--color-accent:#6bb8de;--color-accent-ink:#0f1215;--color-good:#5cc08a;--color-warn:#e0a24a;--color-bad:#f08078;--color-year-1:#2f6688;--color-year-2:#3f9ccc;--color-year-3:#9fd0ec}}:root[data-theme=dark]{--color-bg:#0f1215;--color-surface:#171b20;--color-ink:#e8ecef;--color-muted:#9aa4ae;--color-line:#2a3037;--color-brand:#3f9ccc;--color-accent:#6bb8de;--color-accent-ink:#0f1215;--color-good:#5cc08a;--color-warn:#e0a24a;--color-bad:#f08078;--color-year-1:#2f6688;--color-year-2:#3f9ccc;--color-year-3:#9fd0ec}:root[data-site]{color-scheme:dark;--color-bg:#0d1015;--color-surface:#161b23;--color-ink:#e8ebf0;--color-muted:#9aa3b2;--color-line:#2a313d;--color-brand:#fff;--color-accent:#7cc0ff;--color-accent-hover:#a6d4ff;--color-accent-ink:#0d1015;--font-display:"Space Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;--font-text:"Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;--text-3xl:clamp(2.8rem, 6.5vw, 5.2rem);--radius:10px;--radius-card:16px;--radius-pill:999px;--color-night:#0d1015;--color-night-raised:#161b23;--color-night-line:#2a313d;--color-night-ink:#e8ebf0;--color-night-muted:#9aa3b2;--color-steel:#5f7383;--color-steel-light:#b9c6d0;--color-night-brand:#4aa8d8;--color-signal:#7cc0ff;--color-signal-ink:#0d1015;--color-heat:#fff}@font-face{font-family:Space Grotesk;font-style:normal;font-weight:300 700;font-display:optional;src:url(/fonts/space-grotesk-latin-wght-normal.woff2)format("woff2")}@font-face{font-family:Manrope;font-style:normal;font-weight:200 800;font-display:optional;src:url(/fonts/manrope-latin-wght-normal.woff2)format("woff2")}*{box-sizing:border-box;margin:0;padding:0}html{background:var(--color-bg);color:var(--color-ink);font-family:var(--font-text);-webkit-text-size-adjust:100%;font-size:100%}body{font-size:var(--text-base);flex-direction:column;min-height:100vh;line-height:1.6;display:flex}main{width:100%;max-width:var(--max-width);padding:var(--space-5) var(--space-4);flex:1;margin:0 auto}h1,h2,h3{font-family:var(--font-display);letter-spacing:-.03em;color:var(--color-brand);text-wrap:balance;font-weight:600;line-height:1.1}h1{font-size:var(--text-2xl)}h2{font-size:var(--text-xl)}h3{font-size:var(--text-lg);letter-spacing:-.02em}p+p{margin-top:var(--space-3)}a{color:var(--color-accent);text-underline-offset:.15em}img{max-width:100%;height:auto;display:block}.site-header,.site-footer{width:100%;max-width:var(--max-width);padding:var(--space-3) var(--space-4);margin:0 auto}.site-header{justify-content:space-between;align-items:baseline;gap:var(--space-2) var(--space-4);padding-top:var(--space-4);flex-wrap:wrap;display:flex}.site-header .wordmark{font-family:var(--font-display);font-size:var(--text-xl);color:var(--color-brand);letter-spacing:-.03em;font-weight:600;text-decoration:none}.site-header nav{gap:var(--space-2) var(--space-3);flex-wrap:wrap;align-items:baseline;display:flex}.site-header .lang-switch{border-left:1px solid var(--color-line);padding-left:var(--space-3)}.site-header nav a{color:var(--color-muted);font-size:var(--text-sm);text-decoration:none}.site-header nav a:hover,.site-header nav a[aria-current=page],.site-header nav a.in-section{color:var(--color-accent)}.has-sub{position:relative}.has-sub>a:after{content:"";border-bottom:1.5px solid;border-right:1.5px solid;width:.35em;height:.35em;margin-left:.45em;display:inline-block;transform:translateY(-.25em)rotate(45deg)}.has-sub .sub{z-index:10;top:100%;left:calc(-1 * var(--space-3));min-width:13rem;margin-top:var(--space-2);padding:var(--space-2) 0;background:var(--color-surface);border:1px solid var(--color-line);border-radius:var(--radius);opacity:0;visibility:hidden;list-style:none;transition:opacity .15s,transform .15s,visibility 0s linear .15s;position:absolute;transform:translateY(-.25rem)}.has-sub .sub:before{content:"";inset:calc(-1 * var(--space-2) - 1px) 0 auto;height:var(--space-2);position:absolute}.has-sub:hover .sub,.has-sub:focus-within .sub{opacity:1;visibility:visible;transition-delay:0s;transform:none}.has-sub .sub a{padding:var(--space-2) var(--space-3);white-space:nowrap;display:block}.has-sub .sub a:hover{background:var(--color-bg)}@media (hover:none){.has-sub .sub{display:none}}@media (prefers-reduced-motion:reduce){.has-sub .sub{transition:none}}.site-footer{border-top:1px solid var(--color-line);color:var(--color-muted);font-size:var(--text-sm);justify-content:space-between;gap:var(--space-2) var(--space-4);padding-block:var(--space-4);flex-wrap:wrap;display:flex}.site-footer p+p{margin-top:0}.site-footer .profiles{gap:var(--space-3);display:flex}.site-footer a{color:var(--color-muted)}.button{padding:calc(var(--space-2) + var(--space-1)) var(--space-4);border:1px solid var(--color-accent);border-radius:var(--radius-pill);font-size:var(--text-base);text-decoration:none;display:inline-block}.button.primary{background:var(--color-accent);color:var(--color-accent-ink)}.button:hover{background:var(--color-surface);color:var(--color-accent)}.button.primary:hover{background:var(--color-accent-hover);color:var(--color-accent-ink)}.eyebrow{font-size:var(--text-sm);letter-spacing:.08em;text-transform:uppercase;color:var(--color-muted)}@media (width<=40rem){main{padding:var(--space-4) var(--space-3)}.site-header,.site-footer{padding-inline:var(--space-3)}.site-header .lang-switch{border-left:0;padding-left:0}}.page-intro{max-width:46rem}.page-intro .picto{margin-bottom:var(--space-3)}.page-intro h1{margin:var(--space-3) 0 var(--space-4)}.page-intro .lede{font-size:var(--text-lg);line-height:1.5}.page-section{margin-top:var(--space-6)}.page-section>h2{margin-bottom:var(--space-4)}.page-section .prose{max-width:44rem}.cards{gap:var(--space-4);grid-template-columns:repeat(auto-fill,minmax(18rem,1fr));list-style:none;display:grid}.cards>li{background:var(--color-surface);border:1px solid var(--color-line);border-radius:var(--radius-card);padding:var(--space-4)}.cards h3{margin-bottom:var(--space-2)}.cards p{color:var(--color-muted)}.cta-band{margin-top:var(--space-6);background:var(--color-surface);border:1px solid var(--color-line);border-radius:var(--radius-card);padding:var(--space-5);text-align:center}.cta-band h2{margin-bottom:var(--space-3)}.cta-band .email{font-family:var(--font-display);font-size:var(--text-xl)}@media (width<=40rem){.page-section,.cta-band{margin-top:var(--space-5)}.cta-band{padding:var(--space-4) var(--space-3)}.cta-band .email{font-size:var(--text-lg)}}.picto{background:linear-gradient(135deg, var(--color-brand) 10%, var(--color-accent) 90%);width:2.5rem;height:2.5rem;-webkit-mask:var(--picto) center / contain no-repeat;mask:var(--picto) center / contain no-repeat;display:block}.picto-conseil{--picto:url(/pictos/conseil.svg)}.picto-conferences{--picto:url(/pictos/conferences.svg)}.picto-livres{--picto:url(/pictos/livres.svg)}.arrow-list{list-style:none}.arrow-list>li{padding-left:1.75rem;position:relative}.arrow-list>li:before{content:"";background:var(--color-accent);width:.95rem;height:.95rem;position:absolute;top:.3em;left:0;mask:url(/pictos/fleche.svg) 50%/contain no-repeat}.link-rows{list-style:none}.link-rows>li+li{border-top:1px solid var(--color-line)}.link-rows>li>a{padding:var(--space-4) 3rem var(--space-4) 0;color:var(--color-ink);text-decoration:none;display:block;position:relative}.link-rows>li>a:after{content:"";right:.25rem;top:calc(var(--space-4) + .4rem);background:var(--color-muted);width:1.25rem;height:1.25rem;transition:transform .2s,background-color .2s;position:absolute;mask:url(/pictos/fleche.svg) 50%/contain no-repeat}.link-rows>li>a:hover:after{background:var(--color-accent);transform:translate(3px,-3px)}.link-rows time,.link-rows .from{font-size:var(--text-sm);color:var(--color-muted)}.link-rows p{color:var(--color-muted)}@media (prefers-reduced-motion:reduce){.link-rows>li>a:after{transition:none}}.visually-hidden{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}body{overflow-x:clip}.night{background:var(--color-night);color:var(--color-night-ink);margin-inline:calc(50% - 50vw)}.night:first-child{margin-top:calc(-1 * var(--space-5))}.night-inner{max-width:var(--max-width);padding:var(--space-5) var(--space-4);margin:0 auto}.night h1,.night h2,.night h3{color:var(--color-night-ink)}.night .page-section{margin-top:0}.night .cards p{color:var(--color-night-muted)}.chapter-label{font-family:var(--font-mono);font-size:var(--text-sm);letter-spacing:.04em;color:var(--color-signal)}.chapter-label b{color:var(--color-night-ink);margin-right:.6em;font-weight:400}.chapter-hero{padding-block:var(--space-5)}.chapter-hero h1{font-size:var(--text-display);max-width:14ch;margin:var(--space-4) 0;line-height:1.02}.chapter-hero .lede{font-size:var(--text-lg);color:var(--color-night-muted);max-width:42rem;line-height:1.5}.chapter-hero .lede strong{color:var(--color-night-ink);font-weight:600}.data-tags{gap:var(--space-2);margin-top:var(--space-4);flex-wrap:wrap;list-style:none;display:flex}.data-tags li{font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.06em;text-transform:uppercase;padding:var(--space-1) var(--space-2);border:1px solid var(--color-night-line);border-radius:var(--radius-pill);color:var(--color-night-muted)}.figure-caption{max-width:var(--max-width);padding:var(--space-3) var(--space-4) var(--space-5);font-family:var(--font-mono);font-size:var(--text-xs);color:var(--color-night-muted);margin:0 auto}.steps{counter-reset:step;gap:var(--space-4) var(--space-3);grid-template-columns:repeat(auto-fit,minmax(13rem,1fr));list-style:none;display:grid}.steps>li{counter-increment:step;padding-top:var(--space-4);border-top:1px solid var(--color-line);position:relative}.steps>li:before{content:counter(step, decimal-leading-zero);top:var(--space-2);font-family:var(--font-mono);font-size:var(--text-xs);color:var(--color-accent);position:absolute;left:0}.steps h3{margin:var(--space-2) 0}.steps p{color:var(--color-muted)}.steps.flow>li:not(:last-child):after{content:"";background:var(--color-accent);width:1rem;height:1rem;position:absolute;top:-.5rem;right:0;transform:rotate(45deg);mask:url(/pictos/fleche.svg) 50%/contain no-repeat}.timeline{max-width:48rem;list-style:none}.timeline li{gap:var(--space-3);padding:var(--space-3) 0;border-top:1px solid var(--color-line);grid-template-columns:9rem 1fr;display:grid}.timeline time,.timeline .when{font-family:var(--font-mono);font-size:var(--text-sm);color:var(--color-accent);padding-top:.15em}.chapter-next{margin-top:var(--space-5);justify-content:space-between;gap:var(--space-3);border-top:1px solid var(--color-line);padding-top:var(--space-4);flex-wrap:wrap;display:flex}.chapter-next a{font-family:var(--font-display);font-size:var(--text-lg);letter-spacing:-.02em;font-weight:600;text-decoration:none}.chapter-next a span{font-family:var(--font-mono);font-size:var(--text-xs);color:var(--color-muted);letter-spacing:.04em;font-weight:400;display:block}@media (width<=40rem){.night:first-child{margin-top:calc(-1 * var(--space-4))}.night-inner{padding:var(--space-4) var(--space-3)}.figure-caption{padding-inline:var(--space-3)}.timeline li{gap:var(--space-1);grid-template-columns:1fr}.steps.flow>li:not(:last-child):after{content:none}}