:root{color-scheme:dark;--bg:#101c2b;--surface:#192a3b;--raised:#203449;--text:#f3eddc;--muted:#b8c6ce;--accent:#8ed8ca;--warm:#f1a28d;--purple:#c4b4df;--line:#72818a}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.65 "Segoe UI",Arial,sans-serif}
a{color:var(--accent);text-underline-offset:.22em}
a:hover{text-decoration-thickness:2px;color:var(--warm)}
:focus-visible{outline:3px solid var(--warm);outline-offset:4px}
.skip-link{position:absolute;left:22px;top:-100px;z-index:2;background:var(--text);color:var(--bg);padding:12px 20px;min-height:44px}
.skip-link:focus{top:12px}
.masthead{padding:24px max(22px,calc((100% - 1140px)/2));border-bottom:1px solid var(--line);position:relative;background:var(--surface)}
.masthead::before{content:"";display:block;position:absolute;inset:0 0 auto;height:7px;background:linear-gradient(115deg,#ec806c 0 24%,#e8b47e 24% 38%,#eee7cf 38% 52%,#8ed8ca 52% 70%,#101c2b 70%)}
.brand{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.brand>a{display:inline-flex;align-items:center;min-height:44px;font:700 26px/1.2 Bahnschrift,"Arial Narrow",sans-serif;color:var(--text);text-decoration:none;text-transform:uppercase;letter-spacing:.05em}
.brand>span,footer,.muted{color:var(--muted)}
.course-context{display:flex;flex-wrap:wrap;gap:4px 24px;margin:16px 0 8px}
.course-context span{color:var(--purple)}
.primary-nav{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.primary-nav a,.action{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:10px 16px;border:1px solid var(--line);text-decoration:none;font-weight:600}
.primary-nav a{overflow-wrap:anywhere}
.primary-nav [aria-current],.route-list [aria-current]{border-left:4px solid var(--warm);background:var(--raised);color:var(--text);font-weight:700}
main{max-width:1140px;margin:auto;padding:32px 22px 48px;min-width:0}
h1,h2,h3,h4,h5,h6{font-family:Bahnschrift,"Arial Narrow","Segoe UI",sans-serif;line-height:1.22;scroll-margin-top:24px;overflow-wrap:anywhere}
h1{font-size:clamp(32px,5vw,54px);margin:16px 0 24px;max-width:1000px}
h2{font-size:28px}h3{font-size:23px}
p,li{overflow-wrap:anywhere}
.eyebrow{font:13px/1.6 Consolas,"Courier New",monospace;letter-spacing:.06em;color:var(--purple);text-transform:uppercase}
.hero{position:relative;overflow:hidden;padding:24px 0 48px;border-bottom:1px solid var(--line);margin-bottom:32px}
.hero h1{font-size:clamp(40px,6vw,72px);text-transform:uppercase;max-width:780px;position:relative;z-index:1}
.hero p{max-width:650px;position:relative;z-index:1}
.horizon{position:absolute;right:0;bottom:0;width:50%;height:160px;background:var(--raised);clip-path:polygon(0 90%,12% 90%,12% 40%,15% 40%,15% 78%,30% 78%,30% 56%,47% 56%,47% 25%,50% 25%,50% 60%,66% 60%,66% 40%,73% 40%,73% 78%,90% 78%,90% 12%,94% 12%,94% 85%,100% 85%,100% 100%,0 100%);opacity:.7}
.course-grid{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,290px),1fr));gap:20px}
.course-card{border:1px solid var(--line);border-top:4px solid var(--warm);background:var(--surface);padding:24px}
.course-card:nth-child(2){border-top-color:var(--accent)}.course-card:nth-child(3){border-top-color:var(--purple)}
.course-card h2{font-size:26px}.course-card .action{width:100%}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}
.actions>a{display:inline-flex;align-items:center;min-width:44px;min-height:44px}
.action{background:var(--raised);color:var(--text);border-left:4px solid var(--warm)}
.route-list{padding:0;list-style:none;display:grid;gap:10px}
.route-list li{border:1px solid var(--line);background:var(--surface);padding:4px 12px}
.route-list a{display:flex;align-items:center;min-width:44px;min-height:44px;padding:10px 4px}
.route-list span{display:block;color:var(--muted);font-size:14px;padding:0 4px 12px}
.toc{background:var(--surface);border:1px solid var(--line);padding:8px 16px;margin:16px 0}
summary{cursor:pointer;min-width:44px;min-height:44px;padding:10px 0;font-weight:700;color:var(--text)}
.toc ol{list-style:none;padding:0;margin:12px 0}
.toc li a{display:flex;align-items:center;min-height:44px;min-width:44px;padding:10px 8px;border-top:1px solid #46596a}
.toc .depth-3,.toc .depth-4{padding-left:16px}
.neighbors{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:32px 0;border-top:1px solid var(--line);padding-top:24px}
.neighbor{display:flex;flex-direction:column;justify-content:center;min-width:44px;min-height:88px;border:1px solid var(--line);background:var(--surface);padding:16px;text-decoration:none;overflow-wrap:anywhere}
.neighbor span{color:var(--warm);font-size:14px}.neighbor strong{margin-top:6px}.neighbor small{color:var(--muted);margin-top:8px}
aside{border-left:4px solid var(--warm);padding:12px 16px;background:var(--surface);margin:20px 0}
.coverage{font-size:15px;max-width:780px}
.verification{border:0;border-bottom:2px dashed var(--warm);text-align:center;margin:0;background:#203449;padding:10px 22px;font-size:14px}
article{max-width:780px;margin:32px auto;line-height:1.8}
pre{overflow:auto;padding:16px;background:#0c1726;border:1px solid var(--line)}
code{font-family:Consolas,"Courier New",monospace}pre code{white-space:pre;font-size:15px}
table{border-collapse:collapse;width:100%;margin:0;font-size:16px}
td,th{border:1px solid var(--line);padding:8px 12px;text-align:left;min-width:9rem;max-width:32rem}
blockquote{margin:16px 0;padding-left:16px;border-left:2px solid var(--line)}
.katex-display{overflow:auto hidden;padding:6px 0}
.technical-block,.math-block,.technical-figure{margin:24px 0;max-width:100%;min-width:0}
.technical-label,caption{font-size:14px;color:var(--muted);text-align:left;padding:8px 12px;background:var(--surface)}
.technical-label{margin:0;border:1px solid var(--line);border-bottom:0}
.technical-scroll{max-width:100%;min-width:0;overflow:auto;overscroll-behavior-x:contain;margin:16px 0}
.technical-block .technical-scroll,.math-block .technical-scroll,.technical-figure .technical-scroll{margin:0}
.technical-scroll pre{margin:0;overflow:visible;width:max-content;min-width:100%}
.technical-scroll .katex-display{overflow:visible;width:max-content;min-width:100%;padding:12px}
.math-source{font-size:14px;overflow-wrap:anywhere}
.math-source pre{white-space:pre-wrap;overflow-wrap:anywhere}
.math-source pre code{white-space:pre-wrap;font-size:14px}
.math-inline{display:inline-block;vertical-align:middle;max-width:100%;overflow-x:auto;padding:2px 4px}
.math-inline .math-source{display:block;font:12px/1.5 Consolas,"Courier New",monospace;color:var(--muted);white-space:pre-wrap}
.technical-figure svg{display:block;max-width:none;background:var(--surface)}
.technical-figure rect{fill:var(--raised);stroke:var(--accent);stroke-width:2}
.technical-figure line{stroke:var(--warm);stroke-width:3}
.technical-figure text{fill:var(--text);font:18px "Segoe UI",Arial,sans-serif}
.technical-figure figcaption{font-weight:700;color:var(--accent);padding-top:12px}
article :not(pre)>code{overflow-wrap:anywhere}
.course-access{border-bottom:1px dotted var(--warm)}.access-note{font-size:.85em;color:var(--warm)}
footer{padding:24px max(22px,calc((100% - 1140px)/2));border-top:1px solid var(--line);font-size:14px}
@media(max-width:679px){.brand>span{font-size:14px}.primary-nav{display:grid;grid-template-columns:1fr 1fr}.primary-nav a{text-align:center;padding:10px 8px}.course-context{display:block}.course-context span{display:block}.neighbors{grid-template-columns:1fr}pre code{font-size:13px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}

.progress-panel{font-size:15px}.progress-panel a{display:inline-flex;align-items:center;min-width:44px;min-height:44px}.progress-panel p{margin:0 0 6px}
#progress-status[data-mode=memory-only]{color:var(--warm);font-weight:700}.recovery{border:1px solid var(--line);padding:12px 16px;margin:24px 0}.recovery textarea{font:13px/1.5 Consolas,monospace;resize:vertical}.recovery label{display:block;margin:16px 0}#progress-history li{margin:12px 0}

/* WEB-11 : formulaires natifs, cibles et états textuels. */
[hidden]{display:none!important}
.question{max-width:780px;margin:32px auto;padding:20px;border:1px solid var(--line);background:var(--surface)}
.question h2{font-size:24px}.question details{margin:16px 0}.question legend{padding:8px 0;font-weight:700}
.question fieldset{border:0;padding:0;min-width:0}.question label{display:block}
button,input,textarea{font:inherit;color:var(--text);accent-color:var(--accent)}
button{min-height:44px;min-width:44px;padding:10px 16px;background:var(--raised);border:1px solid var(--line);cursor:pointer;white-space:normal;overflow-wrap:anywhere;max-width:100%}
button:disabled{opacity:.65;cursor:default}input[type=text],textarea{display:block;width:100%;min-height:44px;background:var(--bg);border:1px solid var(--line);padding:10px;box-sizing:border-box}
.answer-option{display:flex!important;align-items:center;gap:12px;min-height:44px;padding:10px 12px;margin:8px 0;border:1px solid var(--line);cursor:pointer}
.answer-option span{min-width:0;overflow-wrap:anywhere}
.answer-option input{flex-shrink:0;width:22px;height:22px}.answer-option:has(:checked){border-left:4px solid var(--accent);background:var(--raised)}
.correction a{display:flex;align-items:center;min-height:44px;overflow-wrap:anywhere}.question-result{font-weight:700}
[data-outcome=correct]{color:var(--accent)}[data-outcome=incorrect]{color:#ffb4ab}[data-outcome=self-assessed]{color:var(--purple)}
#training-summary{border-left:4px solid var(--purple);padding:12px 16px;background:var(--surface)}
@media(max-width:679px){.question{padding:16px 12px}.question h2{font-size:22px}}

/* WEB-19 : recherche locale et renvois entre notions. */
.search-controls{display:flex;align-items:stretch;gap:12px;flex-wrap:wrap;margin:16px 0}
input[type=search]{flex:1 1 240px;width:100%;min-width:0;min-height:44px;background:var(--bg);border:1px solid var(--line);padding:10px}
.search-results li{padding:16px}.search-results p{margin:8px 0}.search-results a{font-weight:700}
.related{border-top:1px solid var(--line);margin-top:32px;padding-top:16px}.related ul{list-style:none;padding:0}.related h3{font-size:21px}.related a{display:flex;align-items:center;min-width:44px;min-height:44px;padding:10px 8px}

/* WEB-20 : contrôles et comparaison de sauvegarde */
 #progress-transfer {margin-top:2rem;overflow-wrap:anywhere}
 #progress-transfer label {display:block;margin-block:1rem}
 #progress-transfer input,#progress-transfer select {display:block;max-width:100%;min-height:44px;padding:.6rem;box-sizing:border-box;background:var(--bg);color:inherit;border:1px solid currentColor}
 #progress-transfer fieldset {min-width:0;margin-block:1rem}
 #progress-transfer pre {white-space:pre-wrap;overflow-wrap:anywhere}
 #progress-transfer textarea {width:100%;max-width:100%}

/* Refonte ARC : charbon, papier chaud, signalétique spectrale. */
:root{--bg:#141419;--surface:#1c1d23;--raised:#292b31;--text:#f5edda;--muted:#bbb9b2;--accent:#86e7ef;--warm:#ffdc49;--purple:#ceaff8;--line:#595b62;--green:#81f2aa;--red:#ff7569;--paper:#efe5cf}
body{background:radial-gradient(ellipse at 90% 0,#28223566,transparent 48rem),var(--bg);font-size:17px}
body::before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.035;z-index:9;background-image:repeating-linear-gradient(0deg,transparent 0 2px,#ffffff12 2px 3px);border-color:#44464d;padding-top:24px;padding-bottom:16px}
.masthead::before{height:5px;background:linear-gradient(90deg,#86e7ef 0 25%,#81f2aa 25% 50%,#ffdc49 50% 75%,#ff4d3f 75%)}
.brand>a{font-size:24px;letter-spacing:-.04em;gap:12px;font-weight:850}
.brand>a::before{content:"";width:24px;height:27px;background:linear-gradient(90deg,#86e7ef 0 22%,transparent 22% 26%,#81f2aa 26% 48%,transparent 48% 52%,#ffdc49 52% 74%,transparent 74% 78%,#ff4d3f 78%);transform:skew(-18deg)}
.brand>span{font:12px Consolas,monospace;letter-spacing:.12em;text-transform:uppercase}
.course-context{font-size:14px;margin-top:20px}.course-context span{color:var(--muted)}
.primary-nav{gap:4px 12px}.primary-nav a{border:1px solid transparent;border-radius:30px;padding:8px 14px;color:var(--muted);font-size:14px}
.primary-nav [aria-current]{border:1px solid var(--paper);color:var(--paper);background:transparent}
.primary-nav a:hover{background:var(--raised);color:var(--text)}
main{max-width:1240px;padding-top:30px}
h1,h2,h3,h4,h5,h6{letter-spacing:-.025em;font-weight:750}
h1{font-size:clamp(34px,5.5vw,66px);line-height:1.04;margin-block:18px 28px;max-width:1050px}
.eyebrow{font-size:11px;letter-spacing:.14em;color:var(--accent);font-weight:700}
.hero{min-height:420px;padding:46px 0 56px;isolation:isolate;border-bottom:1px solid var(--line);margin-bottom:38px}
.hero h1{font-size:clamp(48px,8.3vw,104px);line-height:.94;letter-spacing:-.065em;max-width:800px;text-transform:none;margin:25px 0}
.hero p:not(.eyebrow){font-size:18px;max-width:440px;color:var(--muted)}
.hero .eyebrow::before{content:"●";color:var(--green);padding-right:10px}
.spectral-ribbon{position:absolute;width:530px;height:760px;right:-210px;top:-300px;transform:rotate(-28deg);border:23px solid #86e7ef;border-radius:48%;box-shadow:0 0 0 7px var(--bg),0 0 0 28px #81f2aa,0 0 0 35px var(--bg),0 0 0 56px #ffdc49,0 0 0 63px var(--bg),0 0 0 84px #ff4d3f;z-index:-1;opacity:.95}
.hero-index{display:flex;gap:26px;font:11px/1.6 Consolas,monospace;letter-spacing:.12em;color:var(--muted);margin-top:36px;text-transform:uppercase}
.hero-index b{display:block;color:var(--text);font:700 22px Bahnschrift,"Arial Narrow",sans-serif;letter-spacing:0}
.horizon{display:none}
.course-grid{gap:14px}
.course-card{position:relative;padding:28px 24px;background:linear-gradient(135deg,#2b2c3280,transparent),var(--surface);border:1px solid #55565e;border-top:1px solid #55565e;min-height:280px;display:flex;flex-direction:column;isolation:isolate;overflow:hidden}
.course-card::before{content:"";width:64px;height:5px;background:var(--green);position:absolute;top:0;left:24px}
.course-card:nth-child(2)::before{background:var(--warm)}.course-card:nth-child(3)::before{background:var(--red)}
.course-card .course-symbol{position:absolute;right:15px;bottom:75px;font:900 100px/.9 Bahnschrift,sans-serif;color:#ffffff08;letter-spacing:-.08em;z-index:-1}
.course-card h2{font-size:33px;max-width:260px;margin-top:18px;margin-bottom:12px;line-height:1.06}
.course-card p:not(.eyebrow){font-size:14px;color:var(--muted);margin-bottom:24px}
.course-card .action{margin-top:auto;justify-content:space-between}
.course-card .action::after{content:"↗";font-size:22px}
.action,button{border:1px solid #6b6b70;border-radius:3px;background:#292a30;color:var(--paper);font-size:14px;letter-spacing:.01em}
.action:hover,button:hover{background:var(--paper);color:#17171b;border-color:var(--paper)}
.actions .action:first-child{background:var(--paper);color:#1b1c20;border-color:var(--paper)}
.actions{gap:10px}.actions a{max-width:100%;text-align:center}
.route-list{counter-reset:route;gap:0;border-top:1px solid var(--line)}
.route-list>li{counter-increment:route;border:0;border-bottom:1px solid #44464c;background:transparent;padding:10px 12px 10px 66px;position:relative}
.route-list>li::before{content:counter(route,decimal-leading-zero);position:absolute;top:24px;left:10px;font:600 20px Consolas,monospace;color:var(--warm)}
.route-list>li:hover{background:#ffffff04}.route-list a{font-size:18px;color:var(--paper);text-decoration:none;font-weight:650}
.route-list a:hover{text-decoration:underline;color:var(--accent)}.route-list span{font-size:12px}
.route-list [aria-current]{border-left-color:var(--accent)}
.course-top{display:grid;grid-template-columns:1fr auto;gap:32px;align-items:end;border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:32px}
.course-top h1{margin-bottom:14px}.course-top .actions{margin-bottom:0}.course-top .deck{color:var(--muted);max-width:620px}
.unit-badge{font:800 84px/.9 Bahnschrift,sans-serif;color:var(--warm);letter-spacing:-.06em;opacity:.9}
.coverage{max-width:100%;font-size:12px;line-height:1.6;border:0;border-left:2px solid var(--warm);background:transparent;padding:6px 14px;color:var(--muted)}
.coverage strong{color:var(--text)}
.progress-panel{border:0;border-bottom:1px solid #44464b;background:none;padding:0 0 12px;margin:0 0 22px;font-size:12px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.progress-panel p{margin:0;margin-right:auto}.progress-panel a{min-height:44px;font-size:12px;color:var(--muted)}
.recovery{border:0;padding:0;font-size:12px;color:var(--muted);margin:0 0 26px}.recovery summary{font-size:12px;color:var(--muted)}
.reading-header{padding-block:12px 24px;border-bottom:1px solid var(--line);margin-bottom:26px;position:relative}
.reading-header h1{max-width:1000px}.reading-header .reading-meta{display:flex;gap:18px;color:var(--muted);font:12px/1.6 Consolas,monospace}
.reading-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start}
.reading-tools{position:sticky;top:24px;min-width:0}.reading-tools .toc{margin:0 0 14px;background:transparent;border:0;border-top:2px solid var(--paper);padding:6px 0}
.reading-tools summary{font-size:12px;letter-spacing:.04em;text-transform:uppercase}.reading-tools .toc li a{font-size:12px;line-height:1.5;padding:10px 0;color:var(--muted);border-color:#393b42}
.reading-tools .toc a:hover{color:var(--accent)}.reading-tools .toc .depth-3,.reading-tools .toc .depth-4{padding-left:8px}
article.reading{max-width:820px;margin:0;line-height:1.85;min-width:0}
.source-title{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.reading-section{position:relative;margin:0 0 36px;padding-top:1px}
.reading-section>h2,.reading-section>h3{margin-top:12px;margin-bottom:20px;max-width:720px}
.reading-section>h3{font-size:28px;border-top:1px solid #494a50;padding-top:26px}
.reading-section>h4{font-size:20px;color:var(--accent);margin-bottom:8px}
.reading-section:first-child>p:first-of-type{font-size:21px;line-height:1.65;color:var(--paper);max-width:740px}
.reading-section p{margin-block:16px}.reading-section>p{max-width:740px}
.reading-section li{margin-block:9px;padding-left:4px}.reading-section li::marker{color:var(--accent)}
.reading-section strong{color:#fff4d8;font-weight:700}
.reading-section>ul{padding-left:22px}.reading-section>ul>li:has(>strong:first-child){margin-block:14px}
.reading-section hr{border:0;border-top:1px solid #41434a;margin-block:32px}
.reading-section blockquote{border-left:3px solid var(--warm);background:var(--paper);color:#292a2e;padding:14px 24px;margin:28px 0;font-size:16px;border-radius:0 4px 4px 0}
.reading-section blockquote strong,.reading-section blockquote a{color:#22252b}.reading-section blockquote p{margin:8px 0}
.reading-example{background:#86e7ef08;border:1px solid #86e7ef44;padding:20px 24px}.reading-example>h3{border:0;padding-top:0;color:var(--accent)}
.reading-concept>h3::before{content:"";display:inline-block;width:9px;height:9px;background:var(--green);margin-right:12px;vertical-align:middle}
.reading-caution{border-left:3px solid var(--warm);padding-left:22px}.reading-caution>h3{border-top:0;color:var(--warm)}
article :not(pre)>code{padding:2px 6px;background:#86e7ef12;color:var(--accent);font-size:.88em;border:1px solid #86e7ef25;border-radius:3px}
pre{background:#101115;border-color:#4b4e55;padding:22px}pre code{color:#e9eadb;line-height:1.7;font-size:14px}
.technical-block{border:1px solid #50515a;border-radius:5px;overflow:hidden}.technical-label{background:#303138;color:var(--paper);border:0;font:11px/1.6 Consolas,monospace;padding:10px 14px;letter-spacing:.02em}
.technical-label::before{content:"● ● ●";color:var(--accent);margin-right:20px}.technical-block pre{border:0}
.technical-scroll{border-radius:4px}th{background:var(--paper);color:#202126;font-size:13px}td,th{border-color:#575960;padding:12px 16px}tr:nth-child(even) td{background:#ffffff04}caption{background:#303138;font:11px/1.7 Consolas,monospace;color:var(--paper)}
.observation{margin:32px 0 38px;border:1px solid #64646b;background:#1d1e24;border-radius:5px;overflow:hidden}
.observation-heading{display:flex;gap:10px;justify-content:space-between;align-items:center;padding:12px 18px;border-bottom:1px solid #55565d}
.observation-heading .eyebrow{color:var(--green);font-size:10px}.capture-index{color:var(--muted);font:10px Consolas,monospace}
.capture-link{display:block;background:#101115}.capture-link img{display:block;width:100%;height:auto}.capture-link:focus-visible{outline-offset:-4px}
.observation figcaption{padding:20px 22px 0;font-size:15px}.observation figcaption>strong{font:700 24px/1.2 Bahnschrift,sans-serif;color:var(--paper)}
.observation figcaption p{line-height:1.7;margin:12px 0}
.observation-points{list-style:none;padding:0 22px;margin:10px 0 18px;font-size:14px;line-height:1.6}
.observation-points li{display:flex;align-items:baseline;gap:12px}.observation-points span{color:var(--warm);font:11px Consolas,monospace}
.capture-transcript{border-top:1px solid #4b4d55;padding:4px 22px}.capture-transcript summary{font-size:12px;color:var(--accent)}.capture-transcript pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px}
.media-source{padding:12px 22px;margin:0!important;background:#25262d;font-size:10px;line-height:1.6;color:var(--muted)}
.technical-figure{border:1px solid #4c4e56;padding:18px}.technical-figure svg{background:#1a1b20}.technical-figure rect{fill:#292c32;stroke:var(--accent)}.technical-figure line{stroke:var(--warm)}.technical-figure text{font:18px Bahnschrift,sans-serif}.technical-figure figcaption{font-family:Bahnschrift,sans-serif;font-size:23px;color:var(--paper)}.technical-figure p{font-size:14px}
.neighbors{gap:12px}.neighbor{border-radius:4px;background:transparent;border-color:#5b5c65;padding:20px}.neighbor:hover{background:var(--raised)}.neighbor span{color:var(--accent);font:11px Consolas,monospace;text-transform:uppercase}.neighbor strong{font-family:Bahnschrift,sans-serif;font-size:21px}
.related{font-size:14px}.related h2{font-size:21px}.related a{color:var(--accent)}
.question{border:1px solid #5a5d66;border-top:3px solid var(--green);border-radius:4px;padding:24px;background:#1e1f25}.question h2{font-size:26px}.answer-option{border-color:#535660;border-radius:3px}.answer-option:has(:checked){border-color:var(--accent);background:#86e7ef12}.correction{background:#14151a;padding:12px 18px}.question details summary{font-size:14px;color:var(--accent)}
footer{background:#111216;border-color:#40424a;font-size:11px;letter-spacing:.02em;padding-block:26px}
@media(min-width:1000px){.unit-contents{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:42px}.unit-contents .unit-notes{border-left:1px solid var(--line);padding-left:24px}.unit-notes h3{font-size:18px}}
@media(max-width:900px){.reading-layout{grid-template-columns:190px minmax(0,1fr);gap:26px}.hero h1{max-width:620px}.spectral-ribbon{right:-310px;opacity:.8}}
@media(max-width:679px){body{font-size:16px}.masthead{padding:20px 20px 12px}.brand>a{font-size:22px}.brand>span{font-size:9px}.brand{gap:8px}.primary-nav{display:flex;gap:4px}.primary-nav a{font-size:11px;min-height:44px;padding:8px 10px}.course-context{font-size:12px;margin-top:16px}.course-context span{font-size:11px}.course-context strong{display:block;max-width:310px}main{padding:22px 20px 40px}.hero{min-height:410px;padding:35px 0 30px}.hero h1{font-size:58px;max-width:310px;letter-spacing:-.06em}.hero p:not(.eyebrow){font-size:15px;max-width:255px}.spectral-ribbon{width:350px;height:570px;right:-335px;top:-190px;border-width:15px;box-shadow:0 0 0 6px var(--bg),0 0 0 21px #81f2aa,0 0 0 27px var(--bg),0 0 0 42px #ffdc49,0 0 0 48px var(--bg),0 0 0 63px #ff4d3f;opacity:.9}.hero-index{gap:22px;font-size:9px;margin-top:28px}.hero-index b{font-size:20px}.course-card{min-height:250px}.course-card h2{font-size:32px}h1{font-size:38px;line-height:1.06}.course-top{grid-template-columns:1fr;gap:0}.unit-badge{display:none}.reading-layout{display:block}.reading-tools{position:static;margin-bottom:26px}.reading-tools .toc{border-top:1px solid #55565d}.reading-tools .toc li a{font-size:13px;min-height:44px}.reading-header{padding-top:0}.reading-header h1{font-size:36px;line-height:1.06}.reading-header .actions a{font-size:12px;padding:10px 12px}.reading-header .reading-meta{font-size:10px;gap:12px}.reading-section:first-child>p:first-of-type{font-size:19px}.reading-section>h3{font-size:26px}.reading-example{padding:16px}.reading-caution{padding-left:16px}.reading-section blockquote{padding:12px 16px;margin-inline:0;font-size:14px}.reading-section p{margin-block:16px}.technical-label{font-size:10px}.technical-label::before{margin-right:8px}.observation-heading{padding:10px 14px;flex-wrap:wrap}.observation-heading .eyebrow{font-size:9px}.observation figcaption{padding:18px 16px 0}.observation figcaption>strong{font-size:22px}.observation-points{padding-inline:16px;font-size:13px}.capture-transcript{padding-inline:16px}.media-source{padding:10px 16px}.progress-panel{font-size:11px;gap:0 8px}.progress-panel p{flex-basis:100%}.progress-panel a{font-size:11px}.recovery{margin-bottom:18px}.route-list a{font-size:17px}.route-list>li{padding-left:48px}.route-list>li::before{font-size:16px;left:3px}.route-list span{font-size:11px}.question{padding:20px 16px}}
@media print{body{background:white;color:black}.masthead,.reading-tools,.progress-panel,.recovery,.actions,.neighbors,footer,body::before{display:none}.reading-layout{display:block}article.reading{max-width:none}.observation{break-inside:avoid}.source-title{position:static!important;width:auto;height:auto;clip-path:none;margin:0}.reading-section strong{color:inherit}}
.unit-observations{margin-block:34px}.observation-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.observation-card{border:1px solid #5a5b62;overflow:hidden;border-radius:4px;text-decoration:none;background:var(--surface)}.observation-card img{display:block;width:100%;height:auto}.observation-card>span{display:flex;min-height:66px;align-items:center;padding:16px 20px;font:650 19px/1.3 Bahnschrift,sans-serif;color:var(--paper)}.observation-card:hover{border-color:var(--accent)}
.reading-header::after{content:"";position:absolute;right:5px;top:16px;width:47px;height:4px;transform:skew(-25deg);background:linear-gradient(90deg,#86e7ef 0 25%,#81f2aa 25% 50%,#ffdc49 50% 75%,#ff4d3f 75%)}
@media(max-width:679px){.observation-grid{grid-template-columns:1fr}.observation-card>span{font-size:18px;min-height:56px;padding:14px 16px}.reading-header::after{top:4px;width:32px}}

@media(max-width:679px){.primary-nav a{font-size:10px;padding:8px 6px}.reading-tools{display:grid;grid-template-columns:1fr;gap:0}.reading-tools .toc{margin-bottom:6px}.reading-tools summary{font-size:10px;letter-spacing:.03em}.reading-header .actions{margin-bottom:0}.reading-content>aside{font-size:14px;padding:14px 16px;border-left-color:var(--accent)}}
.reading-meta{flex-wrap:wrap}.reading-meta .coverage-status{color:var(--warm);font-size:10px}
@media(max-width:679px){.hero h1{font-size:54px}.spectral-ribbon{right:-385px}}

/* Les objectifs longs conservent leur zone de sélection sur petit écran. */
.revision-unit { margin-block: 1rem; border-bottom: 1px solid var(--line, #586063); padding-bottom: 1rem; }
#revision-composer input[type="number"] { display: block; min-height: 44px; max-width: 100%; }
#revision-recommendations details { margin-block: .75rem; }
#revision-recommendations .action { display: block; overflow-wrap: anywhere; }