/* Polices auto-hébergées (sous-ensemble latin, licence OFL : fonts/*-OFL.txt). La CSP interdit Google Fonts ; le navigateur ne télécharge que les fichiers des polices utilisées par le thème actif. */
@font-face{font-family:"Source Serif 4";font-style:normal;font-weight:600;font-display:swap;src:url(fonts/source-serif-4-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/source-sans-3-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:600;font-display:swap;src:url(fonts/source-sans-3-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:700;font-display:swap;src:url(fonts/source-sans-3-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"Bricolage Grotesque";font-style:normal;font-weight:800;font-display:swap;src:url(fonts/bricolage-grotesque-latin-800-normal.woff2) format("woff2")}
@font-face{font-family:"Nunito Sans";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/nunito-sans-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Nunito Sans";font-style:normal;font-weight:700;font-display:swap;src:url(fonts/nunito-sans-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"Rubik";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/rubik-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Rubik";font-style:normal;font-weight:500;font-display:swap;src:url(fonts/rubik-latin-500-normal.woff2) format("woff2")}
@font-face{font-family:"Rubik";font-style:normal;font-weight:700;font-display:swap;src:url(fonts/rubik-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"Atkinson Hyperlegible";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/atkinson-hyperlegible-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Atkinson Hyperlegible";font-style:normal;font-weight:700;font-display:swap;src:url(fonts/atkinson-hyperlegible-latin-700-normal.woff2) format("woff2")}
/* Thèmes d'affichage : chaque thème est un bloc de variables, les règles ci-dessous ne lisent que ces variables.
   Classique est la valeur par défaut (pages sans theme-boot.js : administration, projection, quiz en salle). `dark` et `light`
   sont les anciens noms (Nuit et Classique). Attributs posés sur <html> par theme-boot.js : data-theme, data-size, data-font ;
   par app.js : data-cat (catégorie du cours, couleur d'accent de Classique). */
:root,:root[data-theme="classique"]{
  --bg:#FBFAF7; --bg-image:none; --surface:#FFFFFF; --text:#1B2733; --muted:#5A6470; --line:#E4E1DA;
  --accent:#3F4E5F; --accent-ink:#FFFFFF; --accent-soft:color-mix(in srgb,var(--accent) 10%,#fff);
  --ok:#2F6B3A; --ok-soft:#E8F2EA; --ok-ink:#FFFFFF; --bad:#C62F3B; --bad-soft:#FBE9EB; --warn:#7A5200; --warn-soft:#FFF6E3;
  --code:#F1EEE8; --shadow:none; --side:300px; --radius:6px; --pill:4px;
  --font-head:"Source Serif 4",Georgia,serif; --font-body:"Source Sans 3",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --head-weight:600; --h1-weight:600; --h1-spacing:-.01em;
  --side-bg:#FFFFFF; --side-ink:#1B2733; --side-muted:#5A6470; --side-line:#E4E1DA; --side-rule:#E4E1DA; --side-accent:var(--accent); --side-track:#ECE8E0;
  --nav-on-bg:color-mix(in srgb,var(--accent) 13%,#fff); --nav-on-ink:#1B2733;
  --banner-bg:var(--accent); --banner-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px); --banner-ink:#FFFFFF;
  --banner-size:16px 16px; --banner-radius:var(--radius); --banner-edge:none; --chip-bg:rgba(255,255,255,.18); --chip-ink:#FFFFFF;
  --ret-bg:#FFFFFF; --ret-ink:#2F6B3A; --ret-line:#E4E1DA; --ret-icon:#2F6B3A; --ret-text:#1B2733;
  --def-bg:#FFFFFF; --def-ink:var(--text); --def-line:#E4E1DA; --def-label-pad:0; --def-label-bg:transparent; --def-label-ink:#5A6470; --def-term:var(--accent);
  --th-bg:#1B2733; --th-ink:#FFFFFF; --row-alt:#FBFAF7; --mark-bg:transparent; --mark-ink:inherit;
  --step-bg-1:transparent; --step-bg-2:transparent; --step-bg-3:transparent; --step-bg-4:transparent;
  --step-ink-1:var(--accent); --step-ink-2:var(--accent); --step-ink-3:var(--accent); --step-ink-4:var(--accent);
  --d1:color-mix(in srgb,var(--accent) 11%,#fff); --d1-ink:#1B2733; --d2:var(--d1); --d2-ink:#1B2733; --d3:var(--d1); --d3-ink:#1B2733;
  --d4:var(--accent); --d4-ink:#FFFFFF; --d-stroke:var(--accent);
}
/* couleur du cours (course.json : category) : accent du thème Classique */
:root[data-theme="classique"][data-cat="indus"]{--accent:#A2401A}
:root[data-theme="classique"][data-cat="cyber"]{--accent:#1E4E8C}
:root[data-theme="classique"][data-cat="travail"]{--accent:#7A5200}
:root[data-theme="classique"][data-cat="crise"]{--accent:#B42318}
:root[data-theme="classique"][data-cat="ia"]{--accent:#5B3E96}
:root[data-theme="classique"][data-cat="naturels"]{--accent:#2F6B3A}
:root[data-theme="classique"][data-cat="finance"]{--accent:#1F6B62}
:root[data-theme="classique"][data-cat="radio"]{--accent:#9B2C5E}
:root[data-theme="nuit"],:root[data-theme="dark"]{
  --bg:#12161D; --bg-image:none; --surface:#1A202B; --text:#E6E9EF; --muted:#9AA4B6; --line:#273041;
  --accent:#F0A27E; --accent-ink:#1A1206; --accent-soft:#3A2419;
  --ok:#7BD69B; --ok-soft:#14291D; --ok-ink:#0B2013; --bad:#FF7B86; --bad-soft:#331A1E; --warn:#F0B850; --warn-soft:#2E2412;
  --code:#232B39; --shadow:none; --radius:8px; --pill:6px;
  --font-head:"Source Sans 3",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif; --font-body:var(--font-head);
  --head-weight:700; --h1-weight:700; --h1-spacing:-.01em;
  --side-bg:#0C1016; --side-ink:#E6E9EF; --side-muted:#9AA4B6; --side-line:#273041; --side-rule:#273041; --side-accent:#F0A27E; --side-track:#273041;
  --nav-on-bg:#3A2419; --nav-on-ink:#FFE9DD;
  --banner-bg:#1A202B; --banner-image:none; --banner-ink:#E6E9EF; --banner-size:auto; --banner-radius:var(--radius); --banner-edge:3px solid #F0A27E;
  --ret-bg:#14291D; --ret-ink:#7BD69B; --ret-line:#1F4A30; --ret-icon:#7BD69B; --ret-text:#E6E9EF;
  --chip-bg:#273041; --chip-ink:#E6E9EF;
  --def-bg:#1A202B; --def-ink:#E6E9EF; --def-line:#273041; --def-label-pad:0; --def-label-bg:transparent; --def-label-ink:#9AA4B6; --def-term:#F0A27E;
  --th-bg:#0C1016; --th-ink:#E6E9EF; --row-alt:#161B24; --mark-bg:transparent; --mark-ink:#FFE58A;
  --step-bg-1:transparent; --step-bg-2:transparent; --step-bg-3:transparent; --step-bg-4:transparent;
  --step-ink-1:#F0A27E; --step-ink-2:#F0A27E; --step-ink-3:#F0A27E; --step-ink-4:#F0A27E;
  --d1:#1A202B; --d1-ink:#E6E9EF; --d2:#1A202B; --d2-ink:#E6E9EF; --d3:#1A202B; --d3-ink:#E6E9EF;
  --d4:#F0A27E; --d4-ink:#1A1206; --d-stroke:#F0A27E;
}
:root[data-theme="cahier"]{
  --bg:#FFF8EE; --bg-image:none; --surface:#FFFFFF; --text:#22223B; --muted:#5C5C70; --line:#F1E3CC;
  --accent:#C2410C; --accent-ink:#FFFFFF; --accent-soft:#FFEFE5;
  --ok:#0F766E; --ok-soft:#D5F2EC; --ok-ink:#FFFFFF; --bad:#C62F3B; --bad-soft:#FBE9EB; --warn:#6B4E00; --warn-soft:#FFF0B8;
  --code:#F6EBDA; --shadow:none; --radius:20px; --pill:99px;
  --font-head:"Bricolage Grotesque",system-ui,sans-serif; --font-body:"Nunito Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --head-weight:800; --h1-weight:800; --h1-spacing:-.01em;
  --side-bg:#FFFFFF; --side-ink:#22223B; --side-muted:#5C5C70; --side-line:#F1E3CC; --side-rule:#F1E3CC; --side-accent:#C2410C; --side-track:#F4EBDD;
  --nav-on-bg:#FFE4D3; --nav-on-ink:#7C2D12;
  --banner-bg:#FFE4D3; --banner-image:none; --banner-size:auto; --banner-ink:#22223B; --banner-radius:28px; --banner-edge:none;
  --chip-bg:#FFFFFF; --chip-ink:#7C2D12;
  --def-bg:#EDE4FF; --def-ink:#22223B; --def-line:#EDE4FF; --def-label-pad:4px 12px; --def-label-bg:#6D28D9; --def-label-ink:#FFFFFF; --def-term:#4C1D95;
  --ret-bg:#D5F2EC; --ret-ink:#0F5D57; --ret-line:#D5F2EC; --ret-icon:#0F766E; --ret-text:#22223B;
  --th-bg:#FFE4D3; --th-ink:#7C2D12; --row-alt:#FFFCF6; --mark-bg:linear-gradient(transparent 55%,#FFE58A 55%); --mark-ink:inherit;
  --step-bg-1:#FFE4D3; --step-bg-2:#FFF0B8; --step-bg-3:#D5F2EC; --step-bg-4:#DCE8FF;
  --step-ink-1:#7C2D12; --step-ink-2:#6B4E00; --step-ink-3:#0F5D57; --step-ink-4:#1E3A8A;
  --d1:#FFE4D3; --d1-ink:#7C2D12; --d2:#FFF0B8; --d2-ink:#6B4E00; --d3:#D5F2EC; --d3-ink:#0F5D57;
  --d4:#C2410C; --d4-ink:#FFFFFF; --d-stroke:none;
}
:root[data-theme="vif"]{
  --bg:#FFFFFF; --bg-image:none; --surface:#FFFFFF; --text:#1A1A2E; --muted:#55556A; --line:#E6E6EE;
  --accent:#C93C20; --accent-ink:#FFFFFF; --accent-soft:color-mix(in srgb,#C93C20 7%,#fff);
  --ok:#0F766E; --ok-soft:#D9F2EE; --ok-ink:#FFFFFF; --bad:#B91C1C; --bad-soft:#FDE8E8; --warn:#3D2E00; --warn-soft:#FFD23F;
  --code:#F3F3F9; --shadow:none; --radius:14px; --pill:99px;
  --font-head:"Rubik",system-ui,sans-serif; --font-body:"Rubik",system-ui,sans-serif;
  --head-weight:700; --h1-weight:700; --h1-spacing:-.01em;
  --side-bg:#0F766E; --side-ink:#FFFFFF; --side-muted:#D3F0EB; --side-line:#0F766E; --side-rule:#3E9F95; --side-accent:#FFD23F; --side-track:#0A5C55;
  --nav-on-bg:#FFFFFF; --nav-on-ink:#0F5D57; --dot-done:#FFD23F; --dot-done-ink:#0F5D57;
  --banner-bg:#C93C20; --banner-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px); --banner-size:16px 16px; --banner-ink:#FFFFFF;
  --banner-radius:var(--radius); --banner-edge:none; --chip-bg:#FFD23F; --chip-ink:#3D2E00;
  --def-bg:#6D28D9; --def-ink:#FFFFFF; --def-line:#6D28D9; --def-label-pad:4px 12px; --def-label-bg:#FFFFFF; --def-label-ink:#6D28D9; --def-term:#FFE58A;
  --ret-bg:#0F766E; --ret-ink:#FFFFFF; --ret-line:#0F766E; --ret-icon:#FFD23F; --ret-text:#FFFFFF;
  --th-bg:#1A1A2E; --th-ink:#FFFFFF; --row-alt:#F6F6FB; --mark-bg:#FFD23F; --mark-ink:#1A1A2E;
  --step-bg-1:#FFD23F; --step-bg-2:#5EDBC2; --step-bg-3:#8EC5FF; --step-bg-4:#FFB3C7;
  --step-ink-1:#3D2E00; --step-ink-2:#063D35; --step-ink-3:#0B2A55; --step-ink-4:#5C0B24;
  --d1:#FFD23F; --d1-ink:#3D2E00; --d2:#5EDBC2; --d2-ink:#063D35; --d3:#8EC5FF; --d3-ink:#0B2A55;
  --d4:#C93C20; --d4-ink:#FFFFFF; --d-stroke:none;
}
:root[data-theme="lagon"]{
  --bg:#F7FBFB; --bg-image:none; --surface:#FFFFFF; --text:#16302E; --muted:#4E6664; --line:#D5E8E6;
  --accent:#0E7490; --accent-ink:#FFFFFF; --accent-soft:color-mix(in srgb,#0E7490 10%,#fff);
  --ok:#0F766E; --ok-soft:#CCFBF1; --ok-ink:#FFFFFF; --bad:#C62F3B; --bad-soft:#FBE9EB; --warn:#92400E; --warn-soft:#FEF3C7;
  --code:#EAF3F2; --shadow:none; --radius:16px; --pill:99px;
  --font-head:"Rubik",system-ui,sans-serif; --font-body:"Rubik",system-ui,sans-serif;
  --head-weight:700; --h1-weight:700; --h1-spacing:-.01em;
  --side-bg:#134E4A; --side-ink:#FFFFFF; --side-muted:#C7E9E4; --side-line:#134E4A; --side-rule:#2F6F69; --side-accent:#FDE68A; --side-track:#0B3B38;
  --nav-on-bg:#FFFFFF; --nav-on-ink:#134E4A; --dot-done:#FDE68A; --dot-done-ink:#134E4A;
  --banner-bg:#0E7490; --banner-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px); --banner-size:16px 16px; --banner-ink:#FFFFFF;
  --banner-radius:var(--radius); --banner-edge:none; --chip-bg:#FDE68A; --chip-ink:#78350F;
  --def-bg:#155E75; --def-ink:#FFFFFF; --def-line:#155E75; --def-label-pad:4px 12px; --def-label-bg:#FFFFFF; --def-label-ink:#155E75; --def-term:#FDE68A;
  --ret-bg:#CCFBF1; --ret-ink:#134E4A; --ret-line:#CCFBF1; --ret-icon:#0F766E; --ret-text:#16302E;
  --th-bg:#134E4A; --th-ink:#FFFFFF; --row-alt:#F2F9F8; --mark-bg:#FDE68A; --mark-ink:#16302E;
  --step-bg-1:#CCFBF1; --step-bg-2:#A5F3FC; --step-bg-3:#BFDBFE; --step-bg-4:#DDD6FE;
  --step-ink-1:#134E4A; --step-ink-2:#164E63; --step-ink-3:#1E3A8A; --step-ink-4:#4C1D95;
  --d1:#CCFBF1; --d1-ink:#134E4A; --d2:#A5F3FC; --d2-ink:#164E63; --d3:#BFDBFE; --d3-ink:#1E3A8A;
  --d4:#0E7490; --d4-ink:#FFFFFF; --d-stroke:none;
}
:root[data-theme="lumineux"]{
  --bg:#EEF6FF; --bg-image:radial-gradient(circle at 10% 10%,rgba(37,99,235,.14),transparent 30%),radial-gradient(circle at 90% 5%,rgba(6,182,212,.14),transparent 28%);
  --surface:#FFFFFF; --text:#14213D; --muted:#4B5876; --line:#E2ECFA;
  --accent:#1D4ED8; --accent-ink:#FFFFFF; --accent-soft:#DBEAFE;
  --ok:#0F766E; --ok-soft:#DDF3F0; --ok-ink:#FFFFFF; --bad:#C62F3B; --bad-soft:#FBE9EB; --warn:#92400E; --warn-soft:#FFF7E6;
  --code:#E8F0FB; --shadow:0 10px 30px rgba(15,23,42,.06); --radius:22px; --pill:99px;
  --font-head:system-ui,-apple-system,"Segoe UI",sans-serif; --font-body:system-ui,-apple-system,"Segoe UI",sans-serif;
  --head-weight:800; --h1-weight:900; --h1-spacing:-.04em;
  --side-bg:rgba(255,255,255,.86); --side-ink:#14213D; --side-muted:#4B5876; --side-line:#E2ECFA; --side-rule:#E2ECFA; --side-accent:#1D4ED8; --side-track:#DBEAFE;
  --nav-on-bg:#DBEAFE; --nav-on-ink:#1E3A8A;
  --banner-bg:#1D4ED8; --banner-image:radial-gradient(circle at 92% 110%,rgba(255,255,255,.18) 0 22%,transparent 22.5%),linear-gradient(135deg,#1D4ED8,#0E7490); --banner-size:auto; --banner-ink:#FFFFFF;
  --banner-radius:28px; --banner-edge:none; --chip-bg:rgba(255,255,255,.22); --chip-ink:#FFFFFF;
  --def-bg:#FFFFFF; --def-ink:#14213D; --def-line:#E2ECFA; --def-label-pad:4px 12px; --def-label-bg:linear-gradient(135deg,#1D4ED8,#0E7490); --def-label-ink:#FFFFFF; --def-term:#1D4ED8;
  --ret-bg:#FFFFFF; --ret-ink:#0E7490; --ret-line:#E2ECFA; --ret-icon:#0E7490; --ret-text:#14213D;
  --th-bg:#1D4ED8; --th-ink:#FFFFFF; --row-alt:#F5F9FF; --mark-bg:#DBEAFE; --mark-ink:#1E3A8A;
  --step-bg-1:linear-gradient(135deg,#1D4ED8,#0E7490); --step-bg-2:var(--step-bg-1); --step-bg-3:var(--step-bg-1); --step-bg-4:var(--step-bg-1);
  --step-ink-1:#FFFFFF; --step-ink-2:#FFFFFF; --step-ink-3:#FFFFFF; --step-ink-4:#FFFFFF;
  --d1:#DBEAFE; --d1-ink:#1E3A8A; --d2:#CFFAFE; --d2-ink:#164E63; --d3:#E0E7FF; --d3-ink:#3730A3;
  --d4:#1D4ED8; --d4-ink:#FFFFFF; --d-stroke:none;
}
/* règles propres à un thème */
:root[data-theme="lumineux"] .side{backdrop-filter:blur(12px)}
@media (max-width:900px){:root[data-theme="lumineux"] .side,:root[data-theme="lumineux"] .topbar{background:#FFFFFF;backdrop-filter:none}}
html[data-size="s"]{font-size:90%}
html[data-size="l"]{font-size:115%}
html[data-font="lisible"]{--font-body:"Atkinson Hyperlegible",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background-color:var(--bg);background-image:var(--bg-image);background-attachment:fixed;background-repeat:no-repeat;color:var(--text);font:1rem/1.65 var(--font-body);-webkit-font-smoothing:antialiased}
html[data-theme] #page{font-size:1.125rem;line-height:1.7}
a{color:var(--accent)}
button{font:inherit;cursor:pointer}
.skip{position:absolute;left:-999px}

/* layout */
.app{display:grid;grid-template-columns:var(--side) 1fr;min-height:100vh}
.side{position:sticky;top:0;height:100vh;overflow:auto;background:var(--side-bg);color:var(--side-ink);border-right:1px solid var(--side-line);padding:18px 14px 28px}
.brand{display:block;text-decoration:none;color:inherit;padding:2px 8px 14px}
.brand b{display:block;font-size:17px;line-height:1.25}
.brand span{font-size:13px;color:var(--side-muted)}
.pbar{margin:0 8px 14px}
.pbar .track{height:6px;background:var(--side-track);border-radius:99px;overflow:hidden}
.pbar .fill{height:100%;background:var(--side-accent);width:0;transition:width .3s}
.pbar small{display:block;margin-top:5px;color:var(--side-muted);font-size:12.5px}
.nav h3{font-size:11.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--side-muted);margin:18px 8px 6px;font-weight:600}
.nav a{display:flex;gap:8px;align-items:flex-start;padding:6px 8px;border-radius:7px;text-decoration:none;color:var(--side-ink);font-size:14.5px;line-height:1.35}
.nav a:hover{background:var(--nav-on-bg);color:var(--nav-on-ink)}
.nav a.on{background:var(--nav-on-bg);color:var(--nav-on-ink);font-weight:600}
.nav .dot{flex:0 0 16px;height:16px;margin-top:2px;border-radius:50%;border:1.5px solid color-mix(in srgb,var(--side-muted) 60%,transparent);display:grid;place-items:center;font-size:10px;color:transparent}
.nav a.done .dot{background:var(--dot-done,var(--ok));border-color:var(--dot-done,var(--ok));color:var(--dot-done-ink,var(--ok-ink))}
.nav .chap{font-weight:600;font-size:14px;margin:10px 8px 2px;color:var(--side-ink)}
.nav .sub a{padding-left:14px}
.topbar{display:none}
.main{min-width:0;padding:28px clamp(16px,4vw,48px) 80px}
.page{max-width:820px;margin:0 auto}
.crumb{font-size:0.8125rem;color:var(--muted);margin-bottom:6px}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:var(--head-weight)}
h1{font-size:clamp(1.65rem,3.6vw,2.25rem);font-weight:var(--h1-weight);line-height:1.15;margin:0 0 6px;letter-spacing:var(--h1-spacing)}
h2{font-size:1.5rem;margin:34px 0 8px;line-height:1.25}
h3{font-size:1.1875rem;margin:24px 0 6px}
p{margin:0 0 12px}
ul,ol{margin:0 0 14px;padding-left:22px}
li{margin:3px 0}
code,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em;background:var(--code);padding:1px 5px;border-radius:5px}
pre{background:var(--code);padding:12px 14px;border-radius:8px;overflow:auto;font-size:0.8438rem;line-height:1.5}
pre code{background:none;padding:0}
.lead{color:var(--muted);font-size:1.0625rem;margin-bottom:18px}
table{border-collapse:collapse;width:100%;margin:12px 0 18px;font-size:0.9062rem;background:var(--surface);border-radius:min(var(--radius),14px);overflow:hidden;box-shadow:var(--shadow)}
th,td{border-bottom:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
th{background:var(--th-bg);color:var(--th-ink);font-weight:700;font-size:0.9rem}
tbody tr:nth-child(even) td{background:var(--row-alt)}
mark{background:var(--mark-bg);color:var(--mark-ink);font-weight:700;padding:0 2px;border-radius:4px}
tr:last-child td{border-bottom:0}
.tw{overflow-x:auto;margin:0 -2px}
.callout{border-left:4px solid var(--accent);background:var(--accent-soft);padding:12px 16px;border-radius:0 var(--radius) var(--radius) 0;margin:16px 0}
.callout.warn{border-color:var(--warn);background:var(--warn-soft)}
.callout.ok{border-color:var(--ok);background:var(--ok-soft)}
.callout.bad{border-color:var(--bad);background:var(--bad-soft)}
.callout b.t{display:block;margin-bottom:2px}
.callout p:last-child,.callout ul:last-child{margin-bottom:0}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;margin:14px 0}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}
.card h4{margin:0 0 4px;font-size:0.9688rem}
.card p{margin:0;font-size:0.9062rem;color:var(--muted)}
button.card{font:inherit;color:var(--text)}
.tag{display:inline-block;font-size:0.75rem;padding:1px 8px;border-radius:99px;background:var(--accent-soft);color:var(--accent);font-weight:600;vertical-align:middle}
.tag.warn{background:var(--warn-soft);color:var(--warn)}
.tag.ok{background:var(--ok-soft);color:var(--ok)}
.tag.bad{background:var(--bad-soft);color:var(--bad)}
.steps{counter-reset:s;list-style:none;padding:0}
.steps li{counter-increment:s;position:relative;padding:2px 0 8px 46px;min-height:38px}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:36px;height:36px;border-radius:min(var(--radius),14px);background:var(--step-bg-1);color:var(--step-ink-1);display:grid;place-items:center;font:var(--head-weight) 1.4rem/1 var(--font-head)}
.steps li:nth-child(4n+2)::before{background:var(--step-bg-2);color:var(--step-ink-2)}
.steps li:nth-child(4n+3)::before{background:var(--step-bg-3);color:var(--step-ink-3)}
.steps li:nth-child(4n)::before{background:var(--step-bg-4);color:var(--step-ink-4)}

/* buttons */
.btn{border:1px solid var(--line);background:var(--surface);color:var(--text);padding:8px 14px;border-radius:8px;text-decoration:none;display:inline-flex;align-items:center;gap:6px;font-size:0.9062rem}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn.pri{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.pri:hover{filter:brightness(1.07);color:var(--accent-ink)}
.btn.ok{background:var(--ok);border-color:var(--ok);color:var(--ok-ink)}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.pager{display:flex;justify-content:space-between;gap:10px;margin-top:36px;padding-top:18px;border-top:1px solid var(--line);flex-wrap:wrap}

/* home */
.hero{background:linear-gradient(135deg,var(--accent-soft),var(--surface));border:1px solid var(--line);border-radius:14px;padding:26px clamp(18px,3vw,32px);margin-bottom:22px}
.hero p{color:var(--muted);max-width:60ch}
.stat{display:flex;gap:22px;flex-wrap:wrap;margin-top:14px}
.stat div b{display:block;font-size:1.5rem;line-height:1.1}
.stat div span{font-size:0.8125rem;color:var(--muted)}
.chcard{display:block;text-decoration:none;color:inherit}
.chcard:hover{border-color:var(--accent)}
.chcard .n{font-size:0.75rem;color:var(--accent);font-weight:700;letter-spacing:.05em}
.mini{height:5px;background:var(--line);border-radius:9px;margin-top:10px;overflow:hidden}
.mini i{display:block;height:100%;background:var(--ok)}

/* quiz */
.q{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin:14px 0;box-shadow:var(--shadow)}
.q .qh{font-weight:600;margin-bottom:10px}
.q .qh small{color:var(--muted);font-weight:500;margin-right:6px}
.opt{display:flex;gap:10px;width:100%;text-align:left;border:1px solid var(--line);background:var(--bg);color:var(--text);padding:9px 12px;border-radius:8px;margin:6px 0;line-height:1.45}
.opt:hover:not(:disabled){border-color:var(--accent)}
.opt b{flex:0 0 22px;color:var(--muted)}
.opt:disabled{cursor:default}
.opt.right{border-color:var(--ok);background:var(--ok-soft)}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.why{font-size:0.9062rem;color:var(--muted);margin-top:8px;padding:8px 12px;background:var(--code);border-radius:8px}
.qsum{position:sticky;top:0;z-index:5;background:var(--bg);padding:10px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:10px;align-items:center;flex-wrap:wrap}
.score{font-size:0.9375rem}
.score b{font-size:1.25rem}
.result{text-align:center;padding:24px;border:1px solid var(--line);border-radius:14px;background:var(--surface);margin:22px 0}
.result .big{font-size:2.75rem;font-weight:700;line-height:1}

/* tools */
.tool{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px;margin:18px 0;box-shadow:var(--shadow)}
.tool h4{margin:0 0 10px;font-size:0.9375rem}
.tool label{display:block;font-size:0.8438rem;color:var(--muted);margin:10px 0 3px}
.tool input[type=text],.tool select,.tool textarea,textarea.notes{width:100%;font:inherit;font-size:0.9062rem;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--text)}
.tool textarea,textarea.notes{min-height:90px;resize:vertical}
.chk{display:flex;gap:8px;align-items:center;margin:4px 0;font-size:0.9062rem}
.out{background:var(--code);padding:12px 14px;border-radius:8px;margin-top:12px;white-space:pre-wrap;font-size:0.875rem}
.lvl{display:inline-block;padding:3px 12px;border-radius:99px;font-weight:700;font-size:0.875rem}
.lvl.f{background:var(--ok-soft);color:var(--ok)}.lvl.m{background:var(--warn-soft);color:var(--warn)}.lvl.e{background:var(--bad-soft);color:var(--bad)}
.td-q{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:4px 16px 8px;margin:14px 0}
.td-q h3{margin-top:14px}
.saved{font-size:0.7812rem;color:var(--muted);margin-left:8px}

@media (max-width:900px){
  .app{display:block}
  .topbar{display:flex;position:sticky;top:0;z-index:30;background:var(--side-bg);color:var(--side-ink);border-bottom:1px solid var(--side-line);font-size:16px;padding:10px 16px;align-items:center;gap:12px}
  .topbar button{border:1px solid var(--line);background:var(--bg);color:var(--text);border-radius:8px;padding:6px 12px}
  .topbar b{font-size:15px}
  .side{position:fixed;inset:0 auto 0 0;width:min(86vw,320px);z-index:40;transform:translateX(-100%);transition:transform .22s;height:100vh}
  body.open .side{transform:none;box-shadow:0 0 0 100vmax rgba(0,0,0,.4)}
  .main{padding-top:20px}
}
@media print{.side,.topbar,.pager,.btn{display:none!important}.app{display:block}.main{padding:0}}

/* parcours, compte, connexion */
body.track-general .tech-only{display:none!important}
body.track-technique .general-only{display:none!important}
.btn.sm{padding:5px 10px;font-size:13px}
.acct{margin:22px 8px 0;padding-top:14px;border-top:1px solid var(--side-rule);font-size:13px;color:var(--side-muted)}
.acct b{display:block;color:var(--side-ink);font-size:14px}
.acct span{display:block;margin-bottom:8px;word-break:break-all}
.acct .row{gap:6px}
.login{max-width:560px;margin:6vh auto 0}
.login .tool{padding:20px}
label.radio{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border:1px solid var(--line);border-radius:10px;margin:8px 0;cursor:pointer;color:var(--text);font-size:0.9062rem}
label.radio input{margin-top:5px}
label.radio:has(input:checked){border-color:var(--accent);background:var(--accent-soft)}
body.loggedout .side,body.loggedout .topbar{display:none}
body.loggedout .app{display:block}
.tabs{display:flex;gap:6px;margin:14px 0 10px}
.tab{flex:1;border:1px solid var(--line);background:var(--surface);color:var(--text);padding:9px 12px;border-radius:9px;font-size:0.9375rem}
.tab.on{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:600}
.xtabs{margin:14px 0 18px}
.xtabs>input{position:absolute;opacity:0;pointer-events:none}
.xtabs>.xbar{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.xtabs>.xbar label{flex:1 1 auto;text-align:center;cursor:pointer;border:1px solid var(--line);background:var(--surface);padding:8px 12px;border-radius:9px;font-size:0.9062rem}
.xtabs>.xp{display:none;border:1px solid var(--line);border-left:4px solid var(--accent);background:var(--surface);border-radius:0 var(--radius) var(--radius) 0;padding:4px 16px 8px}
.xtabs>input:nth-of-type(1):checked~.xbar label:nth-child(1),.xtabs>input:nth-of-type(2):checked~.xbar label:nth-child(2),.xtabs>input:nth-of-type(3):checked~.xbar label:nth-child(3),.xtabs>input:nth-of-type(4):checked~.xbar label:nth-child(4){border-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:600}
.xtabs>input:nth-of-type(1):checked~.xp:nth-of-type(2),.xtabs>input:nth-of-type(2):checked~.xp:nth-of-type(3),.xtabs>input:nth-of-type(3):checked~.xp:nth-of-type(4),.xtabs>input:nth-of-type(4):checked~.xp:nth-of-type(5){display:block}
/* nth-of-type compte les div : .xbar est le 1er div, les panneaux .xp sont donc aux rangs 2 à 5 */
.xtabs>input:focus-visible~.xbar{outline:2px solid var(--accent);outline-offset:2px}
.xtabs pre{white-space:pre-wrap;word-break:break-word}
.tool input[type=password]{width:100%;font:inherit;font-size:0.9062rem;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--text)}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.45);display:grid;place-items:center;z-index:100;padding:16px}
.modal .tool{max-width:420px;width:100%;margin:0}

/* outils interactifs */
.hint{font-size:0.875rem;color:var(--muted);margin:0 0 10px}
.toolgrid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px;align-items:start}
@media (max-width:700px){.toolgrid{grid-template-columns:1fr}}
.cv{width:100%;max-width:340px;height:auto;aspect-ratio:1;border:1px solid var(--line);border-radius:10px;background:var(--surface);display:block;margin:0 auto}
label.sl{display:block;font-size:0.8438rem;color:var(--muted);margin:10px 0 0}
label.sl b{color:var(--text)}
label.sl input[type=range]{width:100%;margin:4px 0 0}
label.sl select{width:100%;margin-top:4px;font:inherit;font-size:0.9062rem;padding:7px 9px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--text)}
label.radio.sm{padding:6px 12px;margin:0;font-size:0.875rem}
.chips{display:flex;flex-wrap:wrap;gap:4px;margin:8px 0}
.chips .chip{display:inline-flex;flex-direction:column;align-items:center;border-radius:6px;padding:2px 6px;font-size:0.875rem;line-height:1.25;border:1px solid transparent;background:hsl(var(--h,200) 70% 55% / .28);color:var(--text);font-family:ui-monospace,Menlo,monospace}
.chips .chip i{font-style:normal;font-size:0.6562rem;color:var(--muted)}
.chips.big .chip{font-size:1rem;padding:6px 10px;cursor:pointer;font-family:inherit;background:rgba(42,127,212,calc(var(--a,0)*.9 + .06));border:1px solid var(--line)}
.chips.big .chip.sel{border:2px solid var(--accent);background:var(--accent-soft);font-weight:600}
.bar{display:grid;grid-template-columns:78px 1fr 44px;gap:8px;align-items:center;font-size:0.8438rem;margin:3px 0}
.bar>div{height:10px;background:var(--line);border-radius:6px;overflow:hidden}
.bar>div i{display:block;height:100%;background:var(--accent)}
.bar em{font-style:normal;text-align:right;color:var(--muted)}
.bar.me span{font-weight:700}
.tool details{margin-top:10px}.tool summary{cursor:pointer;color:var(--accent);font-size:0.875rem}

/* verrouillage par chapitre */
.nav a.lock{opacity:.55}
.btn.dis{opacity:.5;cursor:not-allowed}
.card.lockedcard{opacity:.6}

/* schémas SVG */
.diagram{margin:16px 0;padding:14px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}
.diagram svg{width:100%;height:auto;display:block;max-width:680px;margin:0 auto}
.diagram figcaption{font-size:14px;color:var(--muted);margin-top:8px}
.diagram .d-line{stroke:var(--muted);stroke-width:1.6;fill:none}
.diagram .d-faint{stroke:var(--line);stroke-width:1.2}
.diagram .d-fill{fill:var(--muted)}
.diagram .d-in{fill:var(--d1);stroke:var(--d-stroke);stroke-width:2}
.diagram .d-node{fill:var(--surface);stroke:var(--d-stroke);stroke-width:2}
.diagram .d-out{fill:var(--d4);stroke:var(--d-stroke);stroke-width:2}
.diagram .d-bias{fill:var(--warn-soft);stroke:var(--warn);stroke-width:2}
.diagram text{fill:var(--text);font:600 15px system-ui,sans-serif}
.diagram .d-c{text-anchor:middle}
.diagram .d-big{font-size:26px}
.diagram .d-small{font-size:13px;font-weight:500;fill:var(--muted)}
.diagram .d-w{font-size:15px;fill:var(--accent)}
.diagram .d-out + text,.diagram text.d-on-out{fill:var(--d4-ink)}

/* débats */
.dbt-opt{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border:1px solid var(--line);border-radius:10px;margin:8px 0;cursor:pointer;background:var(--surface)}
.dbt-opt:has(input:checked){border-color:var(--accent);background:var(--accent-soft)}
.dbt-opt input{margin-top:5px}
.dbt-opt small{display:block;color:var(--muted);font-size:0.8438rem}
.rbar{display:grid;grid-template-columns:minmax(120px,1.2fr) 3fr 78px;gap:8px;align-items:center;margin:6px 0;font-size:0.875rem}
.rbar>div:nth-child(2){height:14px;background:var(--line);border-radius:7px;overflow:hidden}
.rbar>div:nth-child(2) i{display:block;height:100%;background:var(--accent);transition:width .4s}
.rbar.mine .rl{font-weight:700}
.rbar .rv{text-align:right;color:var(--muted)}
.tag.round{margin-left:6px}
.srcs a{word-break:break-word}
.argcard{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin:10px 0}
.argcard h4{margin:0 0 4px;font-size:0.9688rem}
.argcard ul{margin:4px 0 0;padding-left:20px;font-size:0.9062rem}
/* projection */
body.proj{background:#0f1520;color:#fff}
.projmain{max-width:1100px;margin:0 auto;padding:18px 20px 60px}
.projbar{gap:10px;margin-bottom:10px}
body.proj .btn,body.proj select{background:#1c2535;color:#fff;border-color:#33415a;padding:6px 10px;border-radius:8px}
#pq{font-size:clamp(26px,4vw,46px);line-height:1.2;margin:10px 0 20px}
.pround h2{font-size:22px;margin:22px 0 10px;color:#9fb2d0}
body.proj .pbar{display:grid;grid-template-columns:minmax(220px,2fr) 4fr 120px;gap:14px;align-items:center;margin:10px 0}
.plabel{font-size:clamp(16px,2vw,24px)}
.ptrack{height:34px;background:#1f2a3d;border-radius:8px;overflow:hidden}
.ptrack i{display:block;height:100%;background:#4aa8ec;transition:width .5s}
.pval{font-size:clamp(18px,2.4vw,30px);font-weight:700;text-align:right}
.pval small{font-size:.6em;color:#9fb2d0;font-weight:500}
.projmeta{color:#9fb2d0;font-size:14px;margin-top:22px}
.pshift{font-size:22px;line-height:1.7}
@media (max-width:700px){body.proj .pbar{grid-template-columns:1fr}.pval{text-align:left}.rbar{grid-template-columns:1fr}}
/* agrandissement des captures d'écran et figures (clic sur une image de leçon) */
#page img.zoomable{cursor:zoom-in}
.imgzoom{position:fixed;inset:0;z-index:130;background:rgba(0,0,0,.82);display:flex;align-items:center;justify-content:center;padding:12px;cursor:zoom-out}
.imgzoom img{max-width:100%;max-height:100%;width:auto;height:auto;border-radius:6px;background:#fff;box-shadow:0 8px 30px rgba(0,0,0,.5)}
.imgzoom .zclose{position:absolute;top:10px;right:14px;font:600 15px/1 system-ui,sans-serif;color:#fff;background:rgba(0,0,0,.45);border:1px solid rgba(255,255,255,.4);border-radius:8px;padding:8px 12px;cursor:pointer}
.imgzoom figcaption{position:absolute;left:0;right:0;bottom:10px;text-align:center;color:#fff;font-size:14px;padding:0 16px}
/* schémas : texte lisible sur téléphone (les figures larges défilent plutôt que de rétrécir) */
@media (max-width:560px){#page figure.diagram svg[viewBox]{min-width:460px}#page figure.diagram{overflow-x:auto}}
/* bandeau enseignant replié */

/* ---------- glossaire : termes, fenêtre modale, page, encadrés « Pour aller plus loin » ---------- */
button.term{font:inherit;color:inherit;background:none;border:0;border-bottom:1.5px dotted var(--accent);padding:0;margin:0;cursor:help;border-radius:2px;text-align:inherit;display:inline}
button.term:hover{background:var(--accent-soft);color:var(--accent)}
button.term:focus-visible,.gitem:focus-visible,.gx:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.gmodal{position:fixed;inset:0;background:rgba(0,0,0,.5);display:grid;place-items:center;z-index:120;padding:16px;overflow:auto}
.gbox{position:relative;background:var(--surface);color:var(--text);border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 40px rgba(0,0,0,.35);max-width:620px;width:100%;max-height:calc(100vh - 32px);max-height:calc(100dvh - 32px);overflow:auto;padding:20px 22px 18px}
.gbox h2{margin:8px 0 8px;font-size:1.3rem;padding-right:36px}
.gbox .gbody p:first-child{margin-top:0}
.gx{position:absolute;top:8px;right:8px;width:36px;height:36px;border:1px solid var(--line);background:var(--bg);color:var(--text);border-radius:8px;font-size:1.375rem;line-height:1;cursor:pointer}
.gx:hover{background:var(--accent-soft)}
.gcase dl{margin:0}.gcase dt{font-weight:700;color:var(--accent);font-size:.85rem;text-transform:uppercase;letter-spacing:.04em;margin-top:10px}.gcase dd{margin:2px 0 0}
.glinks{margin-top:16px;gap:8px;flex-wrap:wrap}
body.gm-open{overflow:hidden}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.gtools{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:8px 0}
.gtools input[type=search]{flex:1 1 220px;font:inherit;font-size:0.9375rem;padding:8px 12px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--text)}
.gfilt{display:flex;gap:6px;flex-wrap:wrap}
.gfilt button[aria-pressed=true]{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.gl-l{margin:22px 0 6px;font-size:1.1rem;color:var(--accent);border-bottom:1px solid var(--line);padding-bottom:2px}
ul.gl{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.gitem{display:block;width:100%;text-align:left;font:inherit;background:var(--surface);color:var(--text);border:1px solid var(--line);border-radius:var(--radius);padding:10px 14px;cursor:pointer}
.gitem:hover{border-color:var(--accent)}
.gitem .gex{display:block;color:var(--muted);font-size:0.875rem;margin-top:3px}
details.more{border:1px solid var(--line);border-left:4px solid var(--accent);background:var(--surface);border-radius:0 var(--radius) var(--radius) 0;margin:18px 0;padding:0 16px;box-shadow:var(--shadow)}
details.more>summary{cursor:pointer;font-weight:600;color:var(--accent);padding:10px 0;list-style:none;display:flex;align-items:center;gap:8px}
details.more>summary::-webkit-details-marker{display:none}
details.more>summary::before{content:"+";display:inline-grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--accent-soft);font-weight:700;flex:none}
details.more[open]>summary::before{content:"−"}
details.more[open]>summary{border-bottom:1px solid var(--line);margin-bottom:10px}
details.more>summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
details.more>:last-child{margin-bottom:14px}
@media (max-width:700px){.gmodal{place-items:end center;padding:8px}.gbox{padding:16px 16px 14px}}
@media print{.gmodal,.gtools{display:none!important}button.term{border:0}details.more{box-shadow:none;break-inside:avoid}}

/* bandeau « Mis à jour » en tête de leçon (faits datés revérifiés) */
p.upd{margin:6px 0 16px;padding:6px 10px;border-left:3px solid var(--accent,#2a6fb0);background:color-mix(in srgb,var(--accent,#2a6fb0) 8%,transparent);border-radius:0 8px 8px 0;font-size:.82rem;color:var(--muted,#5b6773)}

/* petits écrans : un tableau trop large défile horizontalement dans sa propre zone au lieu d'élargir la page */
@media (max-width:700px){
  #page table{display:block;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
  #page .tw table{display:table}
}

/* téléphone : champs en 16 px (sinon Safari zoome à la saisie), curseurs et boutons plus faciles à toucher */
@media (max-width:700px){
  input[type=text],input[type=number],input[type=password],input[type=email],input[type=search],input:not([type]),textarea,select{font-size:16px!important}
  input[type=range]{min-height:30px}
  #page .btn,#page .tool button,#page .tool select{min-height:40px}
  button.term{padding:3px 2px}
}

/* niveaux de risque R1 à R4 : cellules colorées (palette de l'exemple du DUERP) ; le libellé reste écrit dans la cellule */
td.rk{font-weight:700;text-align:center;white-space:nowrap}
td.rk1{background:#43b369!important;color:#111!important}
td.rk2{background:#f2d12c!important;color:#111!important}
td.rk3{background:#f08a24!important;color:#111!important}
td.rk4{background:#d8383a!important;color:#fff!important}
#tbl th,#tbl td{padding:8px 6px}
#tbl th{white-space:nowrap}
#tbl td .btn.sm{white-space:nowrap}
.tw{overflow-x:scroll}

.fb-row{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:6px 16px;padding:8px 0;border-bottom:1px solid var(--line)}
.fb-s{display:inline-flex;gap:2px}
.fb-star{background:none;border:0;font-size:1.75rem;line-height:1;padding:2px 4px;cursor:pointer;color:var(--line)}
.fb-star.on{color:#e0a100}
.fb-star:focus-visible{outline:2px solid var(--accent);border-radius:4px}
.fbavg{display:grid;grid-template-columns:minmax(160px,1.4fr) 3fr 60px;gap:8px;align-items:center;margin:5px 0;font-size:0.875rem}
.fbavg>div:nth-child(2){height:12px;background:var(--line);border-radius:6px;overflow:hidden}
.fbavg i{display:block;height:100%;background:var(--accent)}

/* suivi de projet (projet.js) */
.pform{display:grid;gap:14px;max-width:760px}
.pform label{display:grid;gap:5px;font-weight:600;font-size:0.9062rem}
.pform input,.pform textarea{font:inherit;font-weight:400;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--text);width:100%;box-sizing:border-box}
.pform textarea{resize:vertical;min-height:70px}

/* ---------- mode cours : diaporama des leçons ---------- */
#pbtn{position:fixed;right:14px;bottom:14px;z-index:60;border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:7px 14px;font:inherit;font-size:13px;color:var(--muted);cursor:pointer;box-shadow:var(--shadow)}
#pbtn:hover,#pbtn:focus-visible{color:var(--text)}
body.loggedout #pbtn{display:none}
body.present .side,body.present .topbar{display:none}
body.present .app{display:block}
body.present .main{padding:0}
body.present .page{max-width:none;margin:0}
@media print{#pbtn{display:none}}
/* lecture guidée (mode cours) : la page de la leçon, agrandie ; une section à la fois, blocs révélés un à un */
body.present .crumb,body.present h1,body.present #body{padding-left:clamp(28px,7vw,120px);padding-right:clamp(28px,7vw,120px)}
body.present .crumb{padding-top:4vh}
body.present h1{font-size:clamp(30px,3.6vw,52px);margin-top:.2em}
.guided{font-size:clamp(19px,2vw,29px);line-height:1.45;padding-bottom:12vh}
.guided h2{font-size:1.7em;line-height:1.2;margin:.3em 0 .6em}
.guided h3,.guided h4{font-size:1.15em}
.guided ul,.guided ol{padding-left:1.2em}
.guided li{margin:.3em 0}
.guided figure.diagram{font-size:16px}
.guided figure.diagram svg{max-width:100%;height:auto}
.guided table{font-size:.85em}
.gz-off{display:none!important}
.gz-fold{display:flex;gap:.6em;align-items:baseline;width:100%;text-align:left;margin:.5em 0;padding:.35em .8em;font:inherit;color:var(--muted);background:none;border:1px dashed var(--line);border-radius:var(--radius);cursor:pointer}
.gz-fold span{flex:1}
.gz-fold i{font-style:normal;font-size:.8em}
.gz-fold:hover{background:var(--accent-soft);color:var(--text)}
.gz-fold.open{opacity:.6}
.gz-fold.open i{transform:rotate(90deg)}
.gz-bar{display:flex;gap:6px;align-items:center;margin:.8em 0 .2em;font-size:13px;color:var(--muted)}
.gz-bar span{font-family:monospace;min-width:3.5em}

/* barre unique en haut en lecture guidée : tout le reste (bandeau enseignant, bouton Mode cours, pied de page) est masqué */
body.present #tbanner,body.present #pbtn,body.present .dk-foot{display:none!important}
#gz-top{position:sticky;top:0;z-index:70;display:flex;align-items:center;gap:10px;padding:7px clamp(16px,4vw,60px);background:var(--surface);border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}
#gz-top .gz-who{font-weight:600;color:var(--text)}
#gz-top .gz-sp{flex:1}
#gz-top #dk-n{min-width:3.5em;text-align:center}
#gz-top i{position:absolute;left:0;bottom:-1px;height:3px;background:var(--accent)}
/* bandeau enseignant en haut (collant) ; les panneaux collants se placent dessous */
#tbanner{border-bottom:1px solid rgba(0,0,0,.25);min-height:46px;box-sizing:border-box;padding-top:8px!important;padding-bottom:8px!important;overflow:visible;flex-shrink:0}
#tbanner .tbtxt{flex:1 1 320px}
#tbanner .tbb{font:inherit;padding:2px 12px;border-radius:6px;border:1px solid #fff;background:#fff;color:#7a4a00;cursor:pointer;font-weight:600}
body.tb .side{top:var(--tbh,0);height:calc(100vh - var(--tbh,0px))}
body.tb .topbar{top:var(--tbh,0)}
body.tb #pbtn{display:none}
/* niveau de détail (élève) */
.lvl{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:0 0 14px;font-size:0.8125rem;color:var(--muted)}
.lvl button{font:inherit;padding:3px 12px;border:1px solid var(--line);background:var(--surface);color:var(--text);cursor:pointer;border-radius:999px}
.lvl button.on{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
body.present .lvl{display:none}

/* classement en direct (live.js) */
.lb{--g:#4f8a1e;--g2:#7cb342;--g-soft:#eaf4dc;--gold:#f2b705;--silver:#aab4c3;--bronze:#c9824a;max-width:860px}
:root[data-theme="nuit"] .lb,:root[data-theme="dark"] .lb{--g:#8fcf55;--g2:#6aa83a;--g-soft:#1d2b14}
.lb-skel{padding:40px;text-align:center;color:var(--muted)}
.lb-hero{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;padding:22px clamp(16px,3vw,28px);border-radius:20px;color:#fff;background:linear-gradient(135deg,#3e7a1a,#7cb342);box-shadow:var(--shadow);margin:0 0 16px}
.lb-hero h1{margin:2px 0 4px;color:#fff;font-size:clamp(22px,4vw,32px)}
.lb-hero p{margin:0;opacity:.92}
.lb-hero .crumb{color:#e5f3d2;opacity:.9}
.lb-clock{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.18);padding:10px 16px;border-radius:999px;font-size:15px}
.lb-clock b{font-variant-numeric:tabular-nums}
.lb-back{margin:0 0 8px;font-size:14px}
.lb-stats{display:flex;flex-wrap:wrap;gap:12px;margin:0 0 16px}
.lb-stats>div{flex:1 1 120px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:12px 16px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.lb-stats b{font-size:28px;line-height:1.1;color:var(--g)}
.lb-stats b small{font-size:15px;color:var(--muted);font-weight:500}
.lb-stats span{color:var(--muted);font-size:13px}
.lb-stats .lb-rg{align-items:center;justify-content:center}
.lb-top>div{flex:0 1 180px}
.lb-ring{width:64px;height:64px;flex:none}
.lb-ring .bg{fill:none;stroke:var(--line);stroke-width:8}
.lb-ring .fg{fill:none;stroke:var(--g2);stroke-width:8;stroke-linecap:round;transition:stroke-dasharray .8s ease}
.lb-ring text{fill:var(--text);font:700 18px system-ui,sans-serif}
.lb-bar2{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;margin:0 0 16px}
.lb-seg{display:inline-flex;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:3px}
.lb-seg button{border:0;background:transparent;color:var(--text);padding:5px 16px;border-radius:999px;font-size:14px}
.lb-seg button.on{background:var(--g);color:#fff}
:root[data-theme="nuit"] .lb-seg button.on,:root[data-theme="dark"] .lb-seg button.on{color:#10141b}
.lb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.lb-card{display:flex;gap:14px;align-items:center;padding:14px;background:var(--surface);border:1px solid var(--line);border-radius:18px;text-decoration:none;color:var(--text);box-shadow:var(--shadow);transition:transform .15s,border-color .15s}
.lb-card:hover{transform:translateY(-2px);border-color:var(--g2)}
.lb-card b{display:block;line-height:1.3}
.lb-card span{color:var(--muted);font-size:13px}
.lb-av{display:inline-flex;align-items:center;justify-content:center;border-radius:50%;flex:none;font-weight:700;color:#fff;background:hsl(var(--h),55%,46%);border:2px solid var(--surface);box-shadow:0 1px 3px rgba(0,0,0,.25)}
.lb-podium{display:flex;align-items:flex-end;justify-content:center;gap:10px;margin:8px 0 18px}
.lb-pod{flex:1 1 0;max-width:200px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:3px;min-width:0}
.lb-pod b{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}
.lb-pod.me b{color:var(--g)}
.lb-medal{font-size:28px;line-height:1}
.lb-ps{font-size:13px;color:var(--muted)}
.lb-step{width:100%;border-radius:14px 14px 0 0;display:flex;align-items:flex-start;justify-content:center;padding-top:8px;font-weight:800;font-size:22px;color:#fff;transform-origin:bottom;animation:lbup .7s ease both}
.p1 .lb-step{height:110px;background:linear-gradient(180deg,#f7c92a,var(--gold))}
.p2 .lb-step{height:78px;background:linear-gradient(180deg,#c7cfdb,var(--silver));animation-delay:.1s}
.p3 .lb-step{height:56px;background:linear-gradient(180deg,#dc9a68,var(--bronze));animation-delay:.2s}
.lb-pod.me .lb-av{outline:3px solid var(--g2)}
@keyframes lbup{from{transform:scaleY(0)}to{transform:scaleY(1)}}
.lb-list{list-style:none;margin:0 0 14px;padding:0;display:flex;flex-direction:column;gap:8px}
.lb-row{display:flex;align-items:center;gap:12px;padding:8px 14px;background:var(--surface);border:1px solid var(--line);border-radius:14px}
.lb-row.me{border-color:var(--g2);background:var(--g-soft)}
.lb-row.anon .lb-nm{color:var(--muted);font-style:italic}
.lb-rk{width:1.6em;text-align:center;font-weight:800;color:var(--muted)}
.lb-nm{flex:1 1 120px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lb-nm small{color:var(--muted)}
.lb-bar{flex:1 1 90px;height:8px;background:var(--line);border-radius:99px;overflow:hidden}
.lb-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--g2),var(--g));border-radius:99px;transition:width .8s ease}
.lb-sc{min-width:3.4em;text-align:right}
.lb-sc small{color:var(--muted);font-weight:500}
.lb-me{position:sticky;bottom:8px;margin:10px 0;padding:8px 10px 0;background:var(--surface);border:1px solid var(--g2);border-radius:16px;box-shadow:var(--shadow)}
.lb-me>span{display:block;font-size:12px;color:var(--muted);margin-bottom:6px;text-transform:uppercase;letter-spacing:.04em}
.lb-me .lb-list{margin-bottom:8px}
.lb-opt{display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;align-items:center;margin:16px 0 0;padding:12px 16px;border:1px dashed var(--line);border-radius:14px;font-size:14px;color:var(--muted)}
.lb-opt b{color:var(--text)}
.lb-mini{display:flex;flex-wrap:wrap;gap:6px 16px;align-items:center;margin:0 0 14px;padding:8px 14px;background:var(--g-soft,#eaf4dc);border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--text);min-height:34px}
.lb-mini:empty{visibility:hidden}
.lb-mini label{margin-left:auto;color:var(--muted)}
.lb-confetti{position:fixed;inset:0;pointer-events:none;z-index:200;overflow:hidden}
.lb-confetti i{position:absolute;top:-12px;width:9px;height:14px;border-radius:2px;animation:lbfall linear forwards}
@keyframes lbfall{to{transform:translateY(105vh) rotate(720deg);opacity:.9}}
@media (prefers-reduced-motion:reduce){.lb-step,.lb-confetti i{animation:none}.lb-bar i,.lb-ring .fg{transition:none}}
@media (max-width:560px){.lb-bar{display:none}.lb-podium{gap:6px}}

/* partie en direct côté étudiant : salle d'attente et compte à rebours plein écran, puis pastille de temps restant */
#lbov{position:fixed;inset:0;z-index:300;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;background:radial-gradient(circle at 30% 20%,#46178f,#2d0e5f);font-weight:800;padding:20px}
.lbov-in{display:flex;flex-direction:column;align-items:center;gap:18px}
.lbov-t{font-size:clamp(18px,3vw,32px);opacity:.9}
.lbov-h{font-size:clamp(30px,7vw,72px);line-height:1.1}
.lbov-s{font-size:clamp(14px,2vw,20px);font-weight:500;opacity:.8}
.lbov-d{display:flex;gap:10px}.lbov-d i{width:16px;height:16px;border-radius:50%;background:#fff;animation:lbdot 1.2s infinite ease-in-out}.lbov-d i:nth-child(2){animation-delay:.2s}.lbov-d i:nth-child(3){animation-delay:.4s}
@keyframes lbdot{0%,80%,100%{transform:scale(.4);opacity:.5}40%{transform:scale(1);opacity:1}}
.lbov-cd{font-size:clamp(120px,40vw,420px);line-height:1;font-weight:900;animation:lbbeat 1s ease-out}
@keyframes lbbeat{0%{transform:scale(1.4);opacity:0}30%{opacity:1}100%{transform:scale(.9)}}
#lbchip{position:fixed;top:12px;right:12px;z-index:150;padding:8px 16px;border-radius:999px;background:#46178f;color:#fff;text-decoration:none;font-weight:700;box-shadow:0 4px 14px rgba(0,0,0,.3)}
#lbchip b{font-variant-numeric:tabular-nums;font-size:1.15em}
#lbchip.low{background:#e21b3c;animation:lbpulse 1s infinite}
#lbchip.done{background:#26890c}
@keyframes lbpulse{50%{transform:scale(1.06)}}
@media (prefers-reduced-motion:reduce){.lbov-cd,#lbchip.low,.lbov-d i{animation:none}}

/* mode question par question, côté étudiant */
#lbov.lbq-on{display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:14px;padding:14px;overflow:auto;text-align:left}
.lbq-top{display:flex;justify-content:space-between;align-items:center;font-size:clamp(15px,2.4vw,22px)}
.lbq-tm{min-width:2.2em;text-align:center;font-size:clamp(26px,5vw,44px);background:rgba(255,255,255,.18);border-radius:999px;padding:0 .4em;font-variant-numeric:tabular-nums}
.lbq-tm.low{background:#e21b3c}
.lbq-q{background:#fff;color:#1d2433;border-radius:14px;padding:clamp(14px,3vw,28px);font-size:clamp(18px,3.4vw,34px);line-height:1.3;text-align:center}
.lbq-opts{flex:1;display:grid;grid-template-columns:1fr 1fr;gap:10px;min-height:0}
@media (max-width:620px){.lbq-opts{grid-template-columns:1fr}}
.lbq-o{position:relative;display:flex;align-items:center;gap:12px;border:0;border-radius:12px;color:#fff;padding:12px 16px;font:inherit;font-weight:700;font-size:clamp(15px,2.4vw,24px);text-align:left;cursor:pointer;box-shadow:0 5px 0 rgba(0,0,0,.25);min-height:64px}
.lbq-o:disabled{cursor:default;opacity:.85}
.lbq-o i{font-style:normal;font-size:1.6em;line-height:1}
.lbq-o span{flex:1}
.lbq-o em{font-style:normal;font-size:1.6em}
.lbq-o.dim{opacity:.35;box-shadow:none}
.lbq-o.good{outline:5px solid #fff}
.lbq-msg{text-align:center;font-weight:800;font-size:clamp(16px,2.6vw,26px)}
.lbq-msg.ok{color:#9cf080}.lbq-msg.ko{color:#ffb3bd}
.lbq-why{background:rgba(255,255,255,.12);border-radius:12px;padding:10px 14px;font-weight:500;font-size:clamp(13px,1.8vw,18px)}
.lbq-bd{max-width:640px;width:100%;margin:0 auto}
.lbq-bd .lb-row{color:var(--text)}
.lbq-btn{display:inline-block;margin-top:6px;padding:12px 24px;border-radius:14px;border:0;background:#fff;color:#46178f;font:inherit;font-weight:800;text-decoration:none;cursor:pointer;box-shadow:0 4px 0 rgba(0,0,0,.25)}

/* administration : bande de résumé, groupe concerné */
.sumbar{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0}.sumc{display:flex;flex-direction:column;min-width:130px;padding:10px 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--text);text-decoration:none}.sumc b{font-size:22px;line-height:1.1;font-variant-numeric:tabular-nums}.sumc span{font-size:12.5px;color:var(--muted)}.sumc.hot{border-color:var(--warn);background:var(--warn-soft)}.sumc.hot b{color:var(--warn)}a.sumc:hover{border-color:var(--accent)}
.scopebar{margin:6px 0 4px;padding:8px 12px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}.scopebar select{min-width:200px}
#testbar>summary{cursor:pointer}

/* panneau Apparence (bas du sommaire, au-dessus du bloc compte) */
.appear{margin:22px 8px 0;padding-top:14px;border-top:1px solid var(--side-rule);font-size:13px;color:var(--side-muted)}
.appear h3{font-family:inherit;font-size:11.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--side-muted);margin:0 0 6px;font-weight:700}
.ap-l{margin:10px 0 5px;font-weight:600}
.ap-themes{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.ap-themes button,.ap-sizes button{font:inherit;font-size:13px;color:var(--side-ink);background:transparent;border:1.5px solid color-mix(in srgb,var(--side-muted) 45%,transparent);border-radius:8px;padding:6px 8px;text-align:left;display:flex;flex-direction:column;gap:4px;min-height:44px}
.ap-themes button:hover,.ap-sizes button:hover{border-color:var(--side-accent)}
.ap-themes button[aria-pressed=true],.ap-sizes button[aria-pressed=true]{border-color:var(--side-accent);background:var(--nav-on-bg);color:var(--nav-on-ink);font-weight:700}
.ap-sw{display:flex}
.ap-sw i{width:16px;height:16px;border-radius:50%;border:1px solid rgba(0,0,0,.25);margin-right:-4px}
.ap-sizes{display:flex;gap:6px}
.ap-sizes button{flex:1;align-items:center;justify-content:center;text-align:center;font-weight:600}
.ap-chk{display:flex;gap:8px;align-items:center;margin:12px 0 0;color:var(--side-ink);cursor:pointer;min-height:32px}
.ap-chk input{width:18px;height:18px;accent-color:var(--side-accent)}
.ap-note{margin:8px 0 0;font-size:12.5px}
/* focus visible dans tous les thèmes */
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.side a:focus-visible,.side button:focus-visible,.side input:focus-visible{outline-color:var(--side-accent)}
@media print{.appear{display:none!important}}

/* bandeau de leçon */
.lsn-banner{background-color:var(--banner-bg);background-image:var(--banner-image);background-size:var(--banner-size);color:var(--banner-ink);border-radius:var(--banner-radius);border-bottom:var(--banner-edge);padding:34px 24px 30px;margin:0 0 18px}
.lsn-k{margin:0 0 8px;font-size:.875rem;letter-spacing:.04em;font-weight:600}
.lsn-banner h1{margin:0 0 14px;font-size:clamp(1.9rem,4.4vw,2.6rem);line-height:1.08}
.lsn-banner h1:last-child{margin-bottom:0}
.lsn-chips{display:flex;flex-wrap:wrap;gap:8px}
.lsn-chips span{font-size:.84rem;font-weight:600;background:var(--chip-bg);color:var(--chip-ink);border-radius:var(--pill);padding:4px 10px}
@media (max-width:560px){.lsn-banner{padding:24px 18px 22px}}
/* encadrés reconnus par app.js (decorate) */
.callout.def{background:var(--def-bg);color:var(--def-ink);border:1px solid var(--def-line);border-radius:var(--radius);padding:20px 22px}
.callout.def b.t{display:inline-block;font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;background:var(--def-label-bg);color:var(--def-label-ink);border-radius:var(--pill);padding:var(--def-label-pad);margin-bottom:8px}
.callout.def b:not(.t){color:var(--def-term)}
.callout.ret{background:var(--ret-bg);color:var(--ret-text);border:1px solid var(--ret-line);border-radius:var(--radius);padding:20px 22px}
.callout.ret b.t{font:var(--head-weight) 1.2rem/1.3 var(--font-head);color:var(--ret-ink);margin-bottom:8px}
.callout.ret ul{list-style:none;padding:0;margin:0}
.callout.ret li{position:relative;padding-left:28px;margin:8px 0}
.callout.ret li::before{content:"";position:absolute;left:3px;top:.5em;width:.85em;height:.45em;border-left:3px solid var(--ret-icon);border-bottom:3px solid var(--ret-icon);transform:rotate(-45deg)}
.callout.obj{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 22px 16px}
:root[data-theme="classique"] .callout.obj{border-top:3px solid var(--accent)}
.callout.obj b.t{font-size:.8125rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}
/* étapes : chaque étape est une carte dans quatre thèmes */
:root[data-theme="cahier"] .steps li,:root[data-theme="vif"] .steps li,:root[data-theme="lagon"] .steps li,:root[data-theme="lumineux"] .steps li{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:12px 16px 12px 64px;margin:0 0 10px}
:root[data-theme="cahier"] .steps li::before,:root[data-theme="vif"] .steps li::before,:root[data-theme="lagon"] .steps li::before,:root[data-theme="lumineux"] .steps li::before{left:16px;top:11px}
/* schémas : couleur des nœuds selon leur rang (app.js : data-r), encre du texte posé dessus (data-ri) */
.diagram [data-r="1"]{fill:var(--d1)}
.diagram [data-r="2"]{fill:var(--d2)}
.diagram [data-r="3"]{fill:var(--d3)}
.diagram text[data-ri="1"]:not(.d-small){fill:var(--d1-ink)}
.diagram text[data-ri="2"]:not(.d-small){fill:var(--d2-ink)}
.diagram text[data-ri="3"]:not(.d-small){fill:var(--d3-ink)}
#page table[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.callout.ok a,.callout.ret a{color:inherit;font-weight:600;text-decoration:underline}   /* le lien (accent) manque de contraste sur le fond vert des encadrés */