@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&display=swap');:root{--green:#1c322d;--deep:#10251f;--cream:#f8f3ee;--gold:#ebb552;--rose:#f1cdbe;--muted:#a8bbae;--line:#405a50}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--cream);color:var(--green);font-family:'DM Sans',Arial,sans-serif}button,input{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.skip{position:absolute;left:-9999px}.skip:focus{left:1rem;top:1rem;z-index:30;background:white;padding:1rem}.site-header{height:88px;background:var(--green);color:var(--cream);border-bottom:1px solid #526b5d;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(20px,5vw,90px)}.brand{display:flex;align-items:center;gap:14px;font-size:18px;letter-spacing:.13em;font-weight:700}.brand-mark{font-size:35px;color:var(--gold)}.brand 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.article-body{background:var(--cream)}.article-nav{background:var(--green);color:white;padding:20px clamp(20px,8vw,120px);display:flex;align-items:center;justify-content:space-between}.article-nav a{font-size:13px}.article-main{max-width:950px;margin:auto;padding:65px 24px 110px}.article-main .eyebrow{color:#a17b3f}.article-main h1{color:var(--green);font-size:clamp(40px,5vw,66px);margin:20px 0}.article-intro{font-size:20px;color:#576f61;line-height:1.8}.lesson-card{border:1px solid #d8dfd4;background:white;padding:clamp(22px,4vw,44px);margin:40px 0}.lesson-card h2{font-size:30px;font-weight:400}.lesson-card p,.lesson-card li{line-height:1.8;color:#4b6455}.lesson-card code{background:#eaf0e8;padding:3px 6px}.sim-stage{padding:22px 8px;background:#eef3ec;border:1px solid #d6e3d5;margin:20px 0}.sim-stage svg{width:100%;height:auto}.sim-controls{display:flex;align-items:center;gap:15px;flex-wrap:wrap}.sim-controls button,.quiz button{border:0;padding:11px 18px;background:var(--green);color:white}.sim-status{font-size:13px;color:#536a5d}.quiz fieldset{border:0;padding:0}.quiz legend{font-weight:700;line-height:1.6;margin-bottom:15px}.quiz label{display:block;border:1px solid #d8e1d6;padding:13px;margin:8px 0;cursor:pointer}.quiz label:has(input:checked){background:#fff3dc;border-color:#d3ae64}.quiz-result{margin-top:15px;padding:15px;background:#e6efe5;border-left:4px solid #6b9875;line-height:1.7}.quiz-result[hidden]{display:none}.note{background:#e9efdf;border-left:4px solid #bf9148;padding:18px 23px;line-height:1.8}
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/* Encyclopédia v0.2 — états partagés des QCM et simulateurs */
[data-stepper] [data-step-panel][hidden]{display:none}
.sim-controls button:disabled{opacity:.45;cursor:not-allowed}
.quiz fieldset{margin:0 0 25px;padding-bottom:18px;border-bottom:1px solid #e2e8df}
.quiz fieldset:last-of-type{border-bottom:0}
.quiz fieldset[data-result="correct"]{border-left:4px solid #649a77;padding-left:12px}
.quiz fieldset[data-result="incorrect"]{border-left:4px solid #c47a61;padding-left:12px}
.quiz input[type="radio"]{accent-color:#1c322d;margin-right:9px}
.quiz-result ol{margin:12px 0 0;padding-left:22px}
.quiz-result li{margin:8px 0;color:#334d3c}
.quiz-result:focus{outline:2px solid #ebb552;outline-offset:3px}
.lesson-card a:not(.button){text-decoration:underline;text-underline-offset:3px}


/* v0.3 — Les relations sont des explications accessibles, pas seulement des arêtes. */
.relation-list{list-style:none;margin:9px 0 20px;padding:0;display:grid;gap:8px}
.relation-list button,.relation-directory button{width:100%;border:1px solid #dce5db;background:#f6faf4;color:var(--green);padding:12px;text-align:left;border-radius:3px;cursor:pointer}
.relation-list button:hover,.relation-list button:focus-visible,.relation-list button.active,.relation-directory button:hover,.relation-directory button:focus-visible{background:#fff2db;border-color:#ba9047;outline-offset:2px}
.relation-list strong,.relation-list span{display:block;font-size:12px;line-height:1.5}
.relation-list strong{margin-bottom:4px;text-transform:uppercase;letter-spacing:.05em}
.relation-list span{color:#536e5f}
.relation-directory{border-top:1px solid #dce5db;margin-top:20px;padding-top:16px;font-size:12px}
.relation-directory summary{cursor:pointer;font-weight:700;color:var(--green)}
.relation-directory ul{list-style:none;padding:0;display:grid;gap:6px;max-height:240px;overflow:auto}
.relation-directory button{font-size:12px;line-height:1.5}