/* ==========================================================================
   Blog SalesWhisperer · thème clair, pensé pour la lecture longue
   Nexa reste la police de marque (titres, logo). Le corps de texte passe sur
   la pile système : Nexa n'existe qu'en ExtraLight sous 500, trop fin pour
   lire 1 000 mots sur fond blanc.
   ========================================================================== */
@font-face{font-family:'Nexa';src:url('/fonts/Nexa-ExtraLight.woff2') format('woff2');font-weight:100 500;font-display:swap}
@font-face{font-family:'Nexa';src:url('/fonts/Nexa-Heavy.woff2') format('woff2');font-weight:501 900;font-display:swap}

:root{
  --bg:#ffffff; --surface:#F7F9FC; --surface-2:#F2F5FA;
  --line:rgba(16,24,40,.10); --line-strong:rgba(16,24,40,.18);
  --blue:#0044FF; --blue-ink:#0032BE;
  --txt:#0B1220; --txt-2:#3B4757; --txt-3:#667085;
  --radius:16px; --ease:cubic-bezier(.22,1,.36,1);
  --container:1180px; --measure:1060px; --texte:700px; --aside:248px;
  --nexa:'Nexa',-apple-system,BlinkMacSystemFont,sans-serif;
  --lire:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
}
*{box-sizing:border-box}
html{overflow-x:clip;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--txt-2);font-family:var(--lire);
  font-size:19px;line-height:1.75;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;height:auto}
a{color:var(--blue-ink)}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:4px}

.skip{position:absolute;left:-9999px;top:0;background:var(--blue);color:#fff;padding:10px 16px;z-index:100;border-radius:0 0 8px 0}
.skip:focus{left:0}

/* --- Navigation ---
   Copie conforme de la barre de la landing (memes dimensions, memes
   espacements, meme menu mobile), declinee en clair. */
nav#nav,.mob-menu{line-height:1.6;font-weight:300}   /* meme interligne que la landing, sinon la barre gagne 3 px */
nav#nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.86);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1140px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--nexa);font-size:19px;letter-spacing:.2px;color:var(--txt);text-decoration:none}
.brand img{width:36px;height:auto}
.brand span{font-weight:200;color:var(--txt-2)}
.brand b{font-weight:800;color:var(--txt)}
.brand small{font-weight:200;color:var(--txt-3);font-size:19px}
.nav-links{display:flex;gap:32px;font-family:var(--nexa);font-size:14.5px}
.nav-links a{position:relative;padding:4px 0;color:var(--txt-2);text-decoration:none;transition:color .25s}
.nav-links a::after{content:'';position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--blue);transition:width .3s var(--ease)}
.nav-links a:hover{color:var(--txt)}
.nav-links a:hover::after{width:100%}
.btn{display:inline-flex;align-items:center;gap:9px;border-radius:100px;padding:14px 26px;font-family:var(--nexa);font-weight:800;font-size:15px;text-decoration:none;white-space:nowrap;transition:transform .3s var(--ease),box-shadow .3s}
.btn svg{flex:none}
.btn .ico-apple{position:relative;top:-1px}
.btn-blue{background:var(--blue);color:#fff;box-shadow:0 8px 24px rgba(0,68,255,.22)}
.btn-blue:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(0,68,255,.30)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--txt)}
.btn-nav{padding:11px 20px;font-size:14px}
.burger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);
  background:#fff;color:var(--txt);place-items:center;flex:none;cursor:pointer;padding:0}
.burger svg{transition:transform .3s var(--ease)}
.burger[aria-expanded="true"] svg{transform:rotate(90deg)}
.mob-menu{position:fixed;inset:0;z-index:90;background:rgba(255,255,255,.96);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  display:none;flex-direction:column;justify-content:center;align-items:center;gap:8px;padding:80px 24px 40px}
.mob-menu.open{display:flex}
.mob-menu a{font-family:var(--nexa);font-size:26px;font-weight:200;color:var(--txt-2);padding:12px 20px;text-decoration:none}
.mob-menu a:hover{color:var(--txt)}
.mob-menu .btn{margin-top:22px;font-size:16px;font-weight:800;color:#fff;padding:14px 26px}
@media(max-width:960px){.nav-links{display:none}.burger{display:grid}}
@media(max-width:520px){
  .nav-inner{padding:12px 16px;gap:10px}
  .brand{font-size:15.5px;gap:7px}
  .brand img{width:29px}
  .brand small{font-size:15.5px}
  .btn-nav{padding:9px 15px;font-size:13px}
}

/* --- Fil d'Ariane --- */
.fil{max-width:var(--measure);margin:0 auto;padding:28px 24px 0;font-size:14px;color:var(--txt-3)}
.fil a{color:var(--txt-3);text-decoration:none}
.fil a:hover{color:var(--txt);text-decoration:underline}
.fil span{margin:0 7px;opacity:.5}

/* --- En-tête d'article --- */
.art-head{max-width:var(--measure);margin:0 auto;padding:20px 24px 0}
.art-head h1,.chapo{max-width:900px}
.eyebrow{display:inline-block;font-family:var(--nexa);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);font-weight:700;margin-bottom:16px}
.art-head h1{font-family:var(--nexa);color:var(--txt);font-size:clamp(31px,4.6vw,46px);line-height:1.15;letter-spacing:-.025em;font-weight:800;margin:0 0 18px}
.chapo{font-size:21px;line-height:1.6;color:var(--txt-2);margin:0 0 22px}
.art-meta{color:var(--txt-3);font-size:14.5px;display:flex;gap:9px;flex-wrap:wrap;align-items:center;margin:0;padding-bottom:26px;border-bottom:1px solid var(--line)}
.art-cover{max-width:var(--measure);margin:34px auto 0;padding:0 24px}
.art-cover img{width:100%;border-radius:var(--radius);border:1px solid var(--line);display:block}

/* --- Grille de lecture : sommaire a gauche, texte a droite --- */
.art-shell{max-width:var(--measure);margin:40px auto 0;padding:0 24px;
  display:grid;grid-template-columns:var(--aside) minmax(0,1fr);gap:64px;align-items:start}

/* --- Sommaire --- */
.toc{position:sticky;top:96px;padding:0;background:none;border:0;border-left:2px solid var(--line);padding-left:20px}
.toc b{font-family:var(--nexa);display:block;color:var(--txt-3);font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;margin-bottom:14px}
.toc ul{margin:0;padding:0;list-style:none;font-size:14.5px;line-height:1.45}
.toc li{margin-bottom:11px}
.toc a{color:var(--txt-2);text-decoration:none}
.toc a:hover{color:var(--blue-ink);text-decoration:underline}

/* --- Corps --- */
.art-body{max-width:var(--texte);margin:0;padding:0}
.art-body h2:first-child{margin-top:0}
.art-body h2{font-family:var(--nexa);color:var(--txt);font-size:clamp(23px,2.4vw,29px);line-height:1.25;
  letter-spacing:-.02em;font-weight:800;margin:56px 0 18px;scroll-margin-top:84px}
.art-body p{margin:0 0 22px}
.art-body strong,.art-body b{color:var(--txt);font-weight:600}
.art-body a{color:var(--blue-ink);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.art-body a:hover{text-decoration-thickness:2px}

/* Encadré de mise en avant */
.cle{margin:32px 0;padding:20px 24px;background:var(--surface);border-left:3px solid var(--blue);border-radius:0 var(--radius) var(--radius) 0;font-size:18px}
.cle p{margin:0}
.cle b{display:block;font-family:var(--nexa);color:var(--txt);font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px}
.cle ul{margin:0;padding-left:20px}
.cle li{margin-bottom:6px}
.cle li:last-child{margin-bottom:0}

/* --- FAQ --- */
.art-faq{max-width:var(--texte);margin:64px 0 0;padding:0}
.art-faq h2{font-family:var(--nexa);font-size:28px;font-weight:800;color:var(--txt);margin:0 0 24px;letter-spacing:-.02em}
.art-faq details{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:10px;transition:border-color .2s}
.art-faq details[open]{border-color:var(--line-strong)}
.art-faq summary{cursor:pointer;padding:17px 20px;font-weight:600;color:var(--txt);font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center}
.art-faq summary::-webkit-details-marker{display:none}
.art-faq summary::after{content:'';flex:none;width:11px;height:11px;border-right:2px solid var(--blue);border-bottom:2px solid var(--blue);transform:rotate(45deg) translateY(-3px);transition:transform .25s var(--ease)}
.art-faq details[open] summary::after{transform:rotate(225deg) translateY(-3px)}
.art-faq details p{margin:0;padding:0 20px 18px;font-size:17.5px}

/* --- Articles liés --- */
.suite{max-width:var(--measure);margin:76px auto 0;padding:0 24px}
.suite h2{font-family:var(--nexa);font-size:24px;font-weight:800;color:var(--txt);margin:0 0 22px;letter-spacing:-.02em}
.suite-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.suite-card{display:block;padding:22px 24px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;text-decoration:none;transition:border-color .2s,transform .25s var(--ease)}
.suite-card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.suite-card span{display:block;font-family:var(--nexa);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);font-weight:700;margin-bottom:9px}
.suite-card b{display:block;color:var(--txt);font-size:17.5px;line-height:1.35;font-weight:600}

/* --- CTA de fin --- */
.art-cta{max-width:var(--texte);margin:64px 0 0;padding:40px 34px;text-align:left;background:var(--txt);border-radius:var(--radius);color:#fff}
.art-cta h2{font-family:var(--nexa);font-size:clamp(23px,3.2vw,31px);font-weight:800;letter-spacing:-.02em;margin:0 0 12px;color:#fff}
.art-cta p{color:rgba(255,255,255,.72);margin:0 0 24px;font-size:17px}
.art-cta .proof{font-size:14px;margin:16px 0 0;color:rgba(255,255,255,.55)}

/* --- Pied de page --- */
footer{border-top:1px solid var(--line);margin-top:88px;padding:54px 24px 32px;background:var(--surface);font-size:15px}
.foot{max-width:var(--container);margin:0 auto;display:flex;gap:56px;flex-wrap:wrap;justify-content:space-between}
.foot-brand{max-width:320px}
.foot-brand p{color:var(--txt-3);font-size:15px;margin-top:13px}
.foot-cols{display:flex;gap:56px;flex-wrap:wrap}
.foot-col{display:flex;flex-direction:column;gap:10px}
.foot-col b{font-family:var(--nexa);color:var(--txt);margin-bottom:4px}
.foot-col a{color:var(--txt-3);text-decoration:none;transition:color .2s}
.foot-col a:hover{color:var(--txt)}
.foot-base{max-width:var(--container);margin:38px auto 0;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--txt-3);font-size:14px}

@media(max-width:980px){
  .art-shell{grid-template-columns:1fr;gap:34px}
  .toc{position:static;border-left:0;padding:20px 24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
  .toc ul{font-size:16px}
  .art-body,.art-faq,.art-cta{max-width:none}
}
@media(max-width:640px){
  body{font-size:18px}
  .chapo{font-size:19px}
  .art-cta{padding:34px 22px}
}

/* ============ Barre de navigation, petits ecrans ============
   Logo, bouton et burger ne tiennent pas cote a cote a leur taille normale
   sous 400 px : le logo etait comprime et son « .io » passait sous le bouton.
   On resserre juste assez pour tout garder lisible jusqu'a 357 px, et sous
   350 px le bouton ne garde que la pomme. */
.brand{flex-shrink:0}
@media(max-width:400px){
  .nav-inner{padding:12px 12px;gap:8px}
  .brand{font-size:14.5px;gap:6px}
  .brand small{font-size:14.5px}
  .brand img{width:26px}
  .btn-nav{padding:9px 12px;font-size:12.5px;gap:6px}
  .burger{width:40px;height:40px}
}
@media(max-width:350px){
  .btn-nav{font-size:0;gap:0;padding:10px 13px}
}