:root{font-family:system-ui,-apple-system,Segoe UI,sans-serif;color:#182432;background:#f6f8fa}*{box-sizing:border-box}body{margin:0}header{background:white;border-bottom:1px solid #e3e8ed;padding:18px max(22px,calc((100vw - 1040px)/2));display:flex;align-items:center;justify-content:space-between;gap:12px}.brand{font-size:19px;font-weight:800;text-decoration:none;color:#17304c}.brand span{color:#347c88}.tag{font-size:12px;color:#627181}main{max-width:1040px;margin:36px auto;padding:0 20px;min-height:75vh}footer{text-align:center;color:#738190;font-size:12px;padding:30px}h1{font-size:clamp(27px,4vw,38px);letter-spacing:-.04em;margin:8px 0 12px}h2{font-size:21px;margin:30px 0 12px}h3{font-size:17px}p{line-height:1.7;color:#4a5968}.muted{color:#6d7d8c}.eyebrow{color:#387c87;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.08em}.lead{font-size:17px;max-width:730px}.panel,.tile{background:white;border:1px solid #e2e8ed;border-radius:15px;padding:22px}.tile{display:block;text-decoration:none;color:inherit;transition:border-color .15s,transform .15s}.tile:hover{border-color:#75aeb7;transform:translateY(-2px)}.tile h3{margin:8px 0}.tile p{font-size:14px;margin:0 0 15px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}.topline,.between{display:flex;align-items:center;justify-content:space-between;gap:10px}.pill{display:inline-block;font-size:12px;font-weight:700;background:#eaf3f4;color:#28717d;border-radius:100px;padding:5px 10px}.pill.pending{background:#f0f2f5;color:#647384}.pill.warning{background:#fff0d8;color:#92620b}.pill.good{background:#e4f5e8;color:#287544}.btn{background:#1f6271;color:white;border:0;border-radius:9px;padding:12px 18px;font-size:14px;font-weight:700;cursor:pointer;text-decoration:none;display:inline-block}.btn.secondary{background:#eef3f5;color:#264658}.btn:disabled{opacity:.4;cursor:not-allowed}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.lesson{max-width:760px}.lesson section{padding:12px 0}.lesson section h2{margin-bottom:8px}.keywords{padding-left:20px;line-height:2;color:#455768}.breadcrumb{color:#3a7b88;text-decoration:none;font-size:14px}.choice{display:block;padding:14px;border:1px solid #dce5eb;border-radius:10px;margin:9px 0;cursor:pointer;background:white}.choice:has(input:checked){border-color:#247a8c;background:#eef9fa}.choice input{margin-right:10px;accent-color:#247a8c}.progress{height:8px;background:#e9eef2;border-radius:20px;overflow:hidden;margin:16px 0}.progress div{height:100%;background:#368b98;transition:width .2s}.question{max-width:720px}.explain{padding:13px 15px;background:#f4f7fa;border-radius:9px;margin:10px 0 18px}.correct{color:#267348}.incorrect{color:#a94435}.result{font-size:48px;font-weight:800;margin:10px 0}.open-answer{width:100%;min-height:120px;padding:14px;border:1px solid #cbd8e0;border-radius:10px;font:inherit;resize:vertical}.small{font-size:13px}.stats{display:flex;gap:14px;flex-wrap:wrap;margin:22px 0}.stat{flex:1;min-width:150px}.stat strong{font-size:27px;display:block}.divider{border:0;border-top:1px solid #e3e9ee;margin:20px 0}@media(max-width:600px){main{margin:22px auto}.panel,.tile{padding:17px}.tag{display:none}}

/* Figures de cours : SVG locaux, légendes lisibles et disposition mobile. */
.lesson-visual{margin:24px 0 30px;padding:20px 0;border-block:1px solid oklch(91% .013 220)}
.lesson-visual h3{margin:0 0 18px;line-height:1.5;color:oklch(32% .04 225)}
.lesson-visual img{display:block;width:100%;max-width:600px;height:auto;margin:0 auto;background:oklch(98% .008 220);border-radius:10px}
.lesson-visual figcaption{margin-top:16px;font-size:14px;line-height:1.75;color:oklch(43% .025 235);max-width:72ch}
.cracking-note{margin:12px 0 28px;padding:20px;background:oklch(96% .023 70);border:1px solid oklch(87% .06 70);border-radius:10px}
.cracking-note h3{margin:0 0 18px;line-height:1.5}
.risk-factors{display:flex;align-items:center;justify-content:space-between;gap:10px;text-align:center;font-size:14px;font-weight:700;line-height:1.6}
.risk-factors small{font-size:12px;font-weight:400}.risk-factors b{color:oklch(48% .1 50);font-size:22px}
.cracking-note p{margin:18px 0 0;font-size:14px}
.visual-sources{font-size:13px;margin:24px 0 0}.visual-sources a{color:oklch(39% .065 220);text-underline-offset:3px}
@media(max-width:600px){.lesson-visual{margin:20px 0;padding:16px 0}.risk-factors{flex-direction:column;gap:4px}.lesson-visual figcaption{font-size:14px}}

.lesson-related{display:flex;flex-direction:column;gap:12px;margin:24px 0;font-size:14px;line-height:1.6}.lesson-related a{color:#286574;text-underline-offset:3px}.visual-sources summary{cursor:pointer;font-weight:600}.visual-sources p{font-size:13px}

/* Lexique : liens discrets dans le cours, définitions dans le flux de lecture. */
.site-nav{display:flex;gap:20px;align-items:center;flex-shrink:0}
.site-nav a{color:oklch(36% .055 220);font-size:14px;text-underline-offset:5px}
.lexicon-term{display:inline;padding:0;border:0;border-radius:2px;background:transparent;color:inherit;font:inherit;line-height:inherit;text-align:inherit;text-decoration-line:underline;text-decoration-style:dotted;text-decoration-color:oklch(44% .065 220);text-decoration-thickness:1px;text-underline-offset:4px;cursor:pointer}
.lexicon-term:hover,.lexicon-term[aria-expanded=true]{color:oklch(36% .065 220);background:oklch(94% .025 220)}
.lexicon-term:focus-visible,.site-nav a:focus-visible,.definition-close:focus-visible{outline:2px solid oklch(44% .08 220);outline-offset:4px}
.lexicon-hint{font-size:13px;line-height:1.65;margin:12px 0 24px;color:oklch(44% .025 235)}
.lexicon-hint a,.inline-definition a,.lexicon-entry a{color:oklch(38% .065 220);text-underline-offset:3px}
.inline-definition{margin:16px 0 22px;padding:18px 20px;background:oklch(96% .018 220);border:1px solid oklch(81% .04 220);border-radius:10px;scroll-margin-block:24px}
.inline-definition:focus{outline:2px solid oklch(51% .07 220);outline-offset:3px}
.definition-heading{display:flex;justify-content:space-between;gap:16px;align-items:center}
.definition-heading h3{margin:0;line-height:1.5;color:oklch(30% .04 225)}
.definition-close{flex-shrink:0;min-width:44px;min-height:44px;border:1px solid oklch(83% .025 220);border-radius:8px;background:oklch(98% .008 220);color:oklch(35% .04 225);font-size:24px;cursor:pointer}
.inline-definition p{margin:8px 0 12px;font-size:15px}
.inline-definition a{font-size:14px}
.lexicon-page{max-width:760px}
.lexicon-search-label{display:block;font-weight:700;font-size:14px;margin:26px 0 8px}
.lexicon-search{width:100%;padding:13px 15px;border:1px solid oklch(77% .025 220);border-radius:9px;background:oklch(99% .005 220);color:oklch(27% .035 235);font:inherit;min-height:48px}
.lexicon-search:focus{outline:2px solid oklch(49% .07 220);outline-offset:2px}
.lexicon-letter{display:grid;grid-template-columns:44px minmax(0,1fr);gap:12px;margin:28px 0}
.lexicon-letter>h2{margin:17px 0 0;color:oklch(42% .065 220);font-size:22px}
.lexicon-letter dl{margin:0;min-width:0}
.lexicon-entry{padding:18px 0;border-top:1px solid oklch(87% .015 220);scroll-margin-block:30px}
.lexicon-entry dt{font-size:18px;font-weight:750;line-height:1.5;color:oklch(29% .035 235)}
.lexicon-entry dd{margin:0}
.lexicon-entry p{margin:7px 0 10px;max-width:70ch}
.lexicon-entry a{font-size:13px}
.lexicon-entry.is-selected{background:oklch(94% .025 220);border-radius:8px;padding:18px 14px}
.lexicon-entry:focus{outline:2px solid oklch(49% .07 220);outline-offset:4px}
.lexicon-note,.lexicon-empty{font-size:14px;line-height:1.7;color:oklch(44% .025 235);margin:24px 0}
@media(max-width:600px){header{flex-wrap:wrap;padding:16px 20px;gap:18px}.site-nav{gap:22px}.site-nav a{display:inline-block;padding:8px 0}.lexicon-letter{grid-template-columns:28px minmax(0,1fr);gap:8px}.inline-definition{padding:14px}.lexicon-entry dt{font-size:17px}}


/* Essai de hiérarchie éditoriale : activation par les données de la fiche 05. */
.lesson section p strong{font-weight:750;color:oklch(29% .04 225)}
.lesson section .lesson-key-point{margin:22px 0;padding:16px 18px;border-block:1px solid oklch(86% .05 75);background:oklch(97% .025 75);color:oklch(34% .04 65);line-height:1.75}
.lesson-key-label{display:block;margin-bottom:7px;font-size:13px;font-weight:750;color:oklch(40% .06 65)}
.lesson .lesson-key-point strong{color:oklch(31% .055 65)}