:root{
  --ink:#101820;--ink2:#14212c;--paper:#f7f4ec;--white:#fff;
  --muted:#62707b;--line:#d7dde1;--accent:#f2c14e;--accent2:#dcae3b;
  --max:1120px;--radius:22px;--shadow:0 18px 50px rgba(16,24,32,.10)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;line-height:1.65}
img{max-width:100%;height:auto}
a{color:inherit}
.container{width:min(var(--max),92vw);margin-inline:auto}
.skip{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}.skip:focus{position:fixed;width:auto;height:auto;margin:0;overflow:visible;clip:auto;clip-path:none;white-space:normal;left:16px;top:16px;background:#fff;padding:10px;z-index:9999}
header{position:sticky;top:0;z-index:30;background:rgba(247,244,236,.95);backdrop-filter:blur(12px);border-bottom:1px solid rgba(16,24,32,.12)}
.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:900;letter-spacing:-.02em}
.brand img{width:44px;height:44px}
nav{display:flex;align-items:center;gap:26px}
nav a{text-decoration:none;font-size:.94rem;font-weight:700;color:#35424c}
nav a:hover{color:#000}
.menu{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 11px;font-size:1.25rem}
.hero{background:var(--ink);color:var(--white);padding:96px 0 82px;overflow:hidden;position:relative}
.hero:after{content:"";position:absolute;width:420px;height:420px;border:1px solid #2e3d49;transform:rotate(45deg);right:-150px;top:-80px}
.hero-grid{display:grid;grid-template-columns:1.4fr .65fr;gap:64px;align-items:center;position:relative;z-index:1}
.kicker{font-size:.78rem;text-transform:uppercase;letter-spacing:.19em;color:var(--accent);font-weight:900}
h1,h2,h3{line-height:1.12;letter-spacing:-.035em}
h1{font-size:clamp(3rem,7vw,6rem);margin:.24em 0 .25em}
.hero p{font-size:clamp(1.05rem,2vw,1.28rem);color:#cbd5dc;max-width:720px}
.hero-card{background:#172631;border:1px solid #344754;border-radius:28px;padding:34px;box-shadow:0 30px 80px rgba(0,0,0,.28)}
.hero-card img{width:132px;display:block;margin-bottom:22px}
.hero-card h2{font-size:1.55rem;margin:0 0 12px}
.btns{display:flex;flex-wrap:wrap;gap:13px;margin-top:30px}
.btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;border-radius:12px;padding:0 18px;text-decoration:none;font-weight:850;border:1px solid transparent;cursor:pointer}
.btn-primary{background:var(--accent);color:var(--ink)}
.btn-primary:hover{background:var(--accent2)}
.btn-ghost{border-color:#50616d;color:#fff}
.btn-light{background:#fff;border-color:var(--line)}
section{padding:84px 0}
.section-head{max-width:760px;margin-bottom:38px}
.section-head h2{font-size:clamp(2.1rem,4.7vw,4rem);margin:.18em 0}
.section-head p{font-size:1.08rem;color:var(--muted)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.card .label,.article-card .label{font-size:.72rem;text-transform:uppercase;letter-spacing:.14em;font-weight:900;color:#76580e}
.card h3{font-size:1.35rem;margin:.7rem 0 .4rem}
.card p{color:var(--muted)}
.card a{margin-top:auto;font-weight:850;text-decoration:none}
.card a:hover{text-decoration:underline}
.dark{background:var(--ink2);color:#fff}
.dark .section-head p{color:#cbd5dc}
.method{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step{border:1px solid #364b59;background:#182a36;border-radius:18px;padding:24px}
.step span{display:block;font-size:.75rem;color:var(--accent);font-weight:900;letter-spacing:.14em}
.step h3{margin:.55rem 0}
.step p{color:#c6d1d8;margin:0}
.articles{display:grid;gap:18px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}
.article-card h3{font-size:1.45rem;margin:.45rem 0}
.article-card p{color:var(--muted);margin:0}
.article-card a{text-decoration:none;font-weight:900}
.article-card a:hover{text-decoration:underline}
.newsletter{border:1px solid #d7b24f;background:#fff8dd;border-radius:28px;padding:38px;display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center}
.newsletter h2{font-size:clamp(2rem,4vw,3.3rem);margin:.2em 0}
.note{font-size:.88rem;color:var(--muted)}
footer{background:#0b1218;color:#c3cdd4;padding:34px 0}
.foot{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;font-size:.88rem}
.foot a{color:#fff}
.article-hero{background:var(--ink);color:#fff;padding:74px 0}
.article-hero h1{font-size:clamp(2.6rem,6vw,5.2rem);max-width:950px;overflow-wrap:anywhere}
.article-hero p{color:#cbd5dc;max-width:760px;font-size:1.13rem}
.prose{width:min(760px,92vw);margin:0 auto;padding:64px 0 90px;font-family:Georgia,"Times New Roman",serif;font-size:1.14rem}
.prose h2,.prose h3{font-family:Inter,system-ui,sans-serif;margin-top:2.2em}
.prose h2{font-size:2rem}
.prose blockquote{margin:2em 0;padding:1.2em 1.4em;border-left:6px solid var(--accent);background:#fff9e5;font-family:Inter,system-ui,sans-serif;font-weight:750}
.prose .box{font-family:Inter,system-ui,sans-serif;background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;margin:28px 0}
.back{display:inline-block;margin-top:22px;font-family:Inter,system-ui,sans-serif;font-weight:850}
.legal{width:min(850px,92vw);margin:auto;padding:70px 0}
.legal h1{font-size:3rem}
@media(max-width:820px){
  nav{display:none;position:absolute;left:4vw;right:4vw;top:68px;background:#fff;padding:18px;border:1px solid var(--line);border-radius:16px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
  nav.open{display:flex}.menu{display:block}
  .hero-grid,.newsletter{grid-template-columns:1fr}.cards,.method{grid-template-columns:1fr}
  .article-card{grid-template-columns:1fr}.hero{padding-top:70px}
}

/* Consolidation 2026-08 — parcours, lecture et mobile */
.library-problem-nav{display:flex;align-items:baseline;gap:.55rem .85rem;flex-wrap:wrap;margin:0 0 1.35rem;padding:0 0 1.05rem;border-bottom:1px solid rgba(16,24,32,.18)}
.library-problem-nav strong{font-size:.82rem;text-transform:uppercase;letter-spacing:.11em;color:#5f470f}
.library-problem-nav a{font-weight:800;text-decoration:none;border-bottom:1px solid rgba(16,24,32,.26);padding:.16rem 0}
.library-problem-nav a:hover,.library-problem-nav a:focus-visible{color:#624500;border-color:#9a7017}
.ce-related{margin:3.2rem 0 0;padding:2rem 0 0;border-top:1px solid rgba(16,24,32,.18);font-family:Inter,system-ui,sans-serif}
.ce-related .kicker{margin-bottom:.4rem}
.ce-related h2{margin:.15rem 0 1rem;font-size:clamp(1.55rem,3.5vw,2.15rem)}
.ce-related-list{display:grid;gap:0}
.ce-related a{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:1rem;padding:.9rem 0;border-top:1px solid rgba(16,24,32,.12);text-decoration:none;font-weight:850}
.ce-related a:first-child{border-top:0}
.ce-related a span:last-child{color:#76580e}
.ce-related a:hover strong{text-decoration:underline;text-underline-offset:3px}
.compare-wrap{max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
.compare-wrap table{min-width:620px}
.prose table{max-width:100%}
.prose pre,.prose code{overflow-wrap:anywhere}
@media(max-width:820px){
  section{padding:56px 0}
  .hero{padding:62px 0 54px}
  .article-hero{padding:48px 0 44px}
  h1{font-size:clamp(2.35rem,11vw,3.5rem)}
  .article-hero h1{font-size:clamp(2.2rem,10vw,3.35rem)}
  .article-hero p,.hero p{font-size:1.03rem;line-height:1.6}
  .section-head{margin-bottom:26px}
  .section-head h2{font-size:clamp(1.9rem,8vw,2.8rem)}
  .article-card{padding:20px;gap:14px;border-radius:14px}
  .article-card h3{font-size:1.28rem}
  .prose{width:min(680px,90vw);padding:46px 0 68px;font-size:1.08rem;line-height:1.72}
  .prose h2{font-size:1.72rem;margin-top:1.9em}
  .prose h3{font-size:1.3rem;margin-top:1.7em}
  .prose .box{padding:18px;border-radius:12px}
  .btn{min-height:46px}
  .library-problem-nav{display:block;margin-bottom:1.1rem}
  .library-problem-nav strong{display:block;margin-bottom:.55rem}
  .library-problem-nav a{display:block;padding:.62rem 0;border-bottom:1px solid rgba(16,24,32,.15)}
  .ce-related{margin-top:2.5rem;padding-top:1.5rem}
  .ce-related a{grid-template-columns:1fr auto;padding:.82rem 0}
}
@media(max-width:620px){
  .article-body .hero{padding:3.15rem 0 2.7rem!important}
  .article-body .hero h1{font-size:clamp(2.05rem,11vw,2.9rem)!important;line-height:1.03!important}
  .article-body .hero p{font-size:1rem!important;line-height:1.62!important}
  .article-body section{padding:2.6rem 0!important}
  .article-body h2{font-size:clamp(1.72rem,8.2vw,2.45rem)!important;line-height:1.08!important}
  .article-body .lead{line-height:1.68!important}
  .article-body .formula{padding:1rem 1.05rem!important;font-size:1.02rem!important}
  .article-body .callout{padding:1rem 1.05rem!important;border-radius:12px!important}
  .article-body .questions{gap:.65rem!important}
  .article-body .questions div{padding:.95rem!important}
  .article-body .table-wrap{margin-inline:-1vw;padding-bottom:.25rem}
  .article-body .compare th,.article-body .compare td{padding:.72rem .78rem!important;font-size:.92rem}
  .article-body .ce-related{padding-top:1.45rem!important}
}
@media(max-width:520px){
  .container{width:min(var(--max),90vw)}
  section{padding:48px 0}
  .hero{padding:54px 0 46px}
  .article-hero{padding:42px 0 38px}
  h1{font-size:clamp(2.15rem,12vw,3rem)}
  .article-hero h1{font-size:clamp(2.05rem,11.5vw,2.85rem)}
  .prose{width:90vw;font-size:1.045rem}
  .foot{display:grid;gap:.65rem}
}