@font-face{font-family:"Marcellus";font-style:normal;font-weight:400;font-display:swap;src:url(/assets/fonts/marcellus-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Marcellus";font-style:normal;font-weight:400;font-display:swap;src:url(/assets/fonts/marcellus-latin-ext-400-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Spectral";font-style:normal;font-weight:400;font-display:swap;src:url(/assets/fonts/spectral-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Spectral";font-style:normal;font-weight:400;font-display:swap;src:url(/assets/fonts/spectral-latin-ext-400-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Spectral";font-style:italic;font-weight:400;font-display:swap;src:url(/assets/fonts/spectral-latin-400-italic.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Spectral";font-style:italic;font-weight:400;font-display:swap;src:url(/assets/fonts/spectral-latin-ext-400-italic.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Spectral";font-style:normal;font-weight:600;font-display:swap;src:url(/assets/fonts/spectral-latin-600-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Spectral";font-style:normal;font-weight:600;font-display:swap;src:url(/assets/fonts/spectral-latin-ext-600-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Atkinson Hyperlegible";font-style:normal;font-weight:400;font-display:swap;src:url(/assets/fonts/atkinson-hyperlegible-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Atkinson Hyperlegible";font-style:normal;font-weight:400;font-display:swap;src:url(/assets/fonts/atkinson-hyperlegible-latin-ext-400-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Atkinson Hyperlegible";font-style:italic;font-weight:400;font-display:swap;src:url(/assets/fonts/atkinson-hyperlegible-latin-400-italic.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Atkinson Hyperlegible";font-style:italic;font-weight:400;font-display:swap;src:url(/assets/fonts/atkinson-hyperlegible-latin-ext-400-italic.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Atkinson Hyperlegible";font-style:normal;font-weight:700;font-display:swap;src:url(/assets/fonts/atkinson-hyperlegible-latin-700-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Atkinson Hyperlegible";font-style:normal;font-weight:700;font-display:swap;src:url(/assets/fonts/atkinson-hyperlegible-latin-ext-700-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

/* Mise en page : colonne de lecture unique (~65 car.), figures pleine largeur de colonne, en-tête collant avec réglages. */
:root{
  --bg:#F5F6FA;          /* papier légèrement bleuté */
  --surface:#FFFFFF;
  --fg:#1A2036;          /* encre nuit */
  --muted:#535B75;
  --line:#D8DCE8;
  --accent:#2C55B0;      /* lapis */
  --accent-soft:#E4EAF8;
  --dawn:#8A5A12;        /* or d'aube, pour texte : contraste AA */
  --dawn-soft:#F5EBD6;
  --water:#3C7FA8;
  --land:#5E7B3A;
  --night:#1A2036;
  --f-display:"Marcellus", "Trajan Pro", Georgia, serif;
  --f-text:"Spectral", Georgia, "Times New Roman", serif;
  --f-ui:"Atkinson Hyperlegible", "Segoe UI", system-ui, sans-serif;
  --scale:1;
  --chip-bg:rgba(16,20,40,.72); --chip-fg:#FFFFFF;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#11152A; --surface:#181D36; --fg:#E7EAF4; --muted:#A6ADC6; --line:#2E3556;
    --accent:#8FB0F5; --accent-soft:#232B4D; --dawn:#E9C27A; --dawn-soft:#2D2A2A;
    --water:#6FB2DA; --land:#9DBE6E; --night:#070912; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#11152A; --surface:#181D36; --fg:#E7EAF4; --muted:#A6ADC6; --line:#2E3556;
  --accent:#8FB0F5; --accent-soft:#232B4D; --dawn:#E9C27A; --dawn-soft:#2D2A2A;
  --water:#6FB2DA; --land:#9DBE6E; --night:#070912; color-scheme:dark;
}
:root.lisible{ --f-text:"Atkinson Hyperlegible", Verdana, sans-serif; }

*,*::before,*::after{box-sizing:border-box}
body{background:var(--bg);color:var(--fg);font-family:var(--f-ui);font-size:16px;line-height:1.5}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--surface)}
a{color:var(--accent)}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:var(--surface);padding:.6rem 1rem;z-index:20}
.skip:focus{left:16px;top:16px}
.wrap{max-width:44rem;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}

/* En-tête */
header.site{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--surface);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;gap:.75rem;padding-block:.6rem;flex-wrap:wrap}
.brand{font-family:var(--f-display);font-size:1.15rem;text-decoration:none;color:var(--fg);margin-right:auto;letter-spacing:.02em}
.brand span{color:var(--dawn)}
.btn{font:inherit;font-size:.95rem;min-height:44px;padding:.45rem .9rem;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--fg);cursor:pointer}
.btn:hover{border-color:var(--accent)}
.btn[aria-pressed="true"]{background:var(--accent);color:var(--surface);border-color:var(--accent)}
#reglages{border-top:1px solid var(--line);background:var(--surface)}
#reglages .wrap{display:grid;gap:.9rem;padding-block:1rem}
.row{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem}
.row .lab{font-weight:700;min-width:9rem}
.muted,.proto-note{font-size:.85rem;color:var(--muted)}

/* Ouverture du chapitre */
.crumbs{font-size:.9rem;color:var(--muted);margin-top:1.5rem}
.crumbs a{color:var(--muted)}
h1{font-family:var(--f-display);font-weight:400;font-size:clamp(1.56rem,4.2vw,2.04rem);line-height:1.2;margin:.3rem 0 .6rem;text-wrap:balance}
.intro{font-size:1.05rem;color:var(--muted);max-width:38rem}
.source{font-size:.85rem;color:var(--muted)}

/* Sections */
section.passage{margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--line)}
.eyebrow{font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--dawn);font-weight:700}
h2{font-family:var(--f-display);font-weight:400;font-size:1.4rem;margin:.2rem 0 1rem;text-wrap:balance}
.texte{font-family:var(--f-text);font-size:calc(1.15rem * var(--scale));line-height:1.75}
.texte p{margin:0 0 .55em}
.v{font-family:var(--f-ui);font-size:.68em;font-weight:700;color:var(--accent);vertical-align:.35em;margin-right:.25em;user-select:none}
:root.lisible .texte{letter-spacing:.01em;word-spacing:.08em;line-height:1.9}

/* Figures */
figure{margin:1.5rem 0;background:var(--surface);border:1px solid var(--line);border-radius:10px;overflow:hidden}
figure svg{display:block;width:100%;height:auto;max-width:100%}
figure img{display:block;width:100%;max-width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;background:var(--accent-soft)}

.schema{position:relative}
.lbl{position:absolute;transform:translate(-50%,-50%);max-width:90%;text-align:center;white-space:nowrap;
  font-size:clamp(.68rem,2.4vw,.95rem);font-weight:700;line-height:1.2;padding:.25em .6em;border-radius:999px;
  background:var(--chip-bg);color:var(--chip-fg)}
.roles{list-style:none;margin:0;padding:.8rem;display:grid;grid-template-columns:repeat(3,1fr);gap:.6rem;text-align:center;font-size:.95rem}
.roles li{min-width:0}
@media (max-width:480px){.roles{grid-template-columns:1fr;text-align:left}}
.lbl-tl{transform:none;text-align:left}
.roles-2{grid-template-columns:repeat(2,1fr)}
@media (max-width:560px){.lbl .t{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}}
.alerte{margin:.6rem 0 0;padding:.6rem .8rem;border-radius:6px;background:var(--dawn-soft);border-left:4px solid var(--dawn)}

/* Choix de langue */
.lang{position:relative}
.lang-btn{display:inline-flex;align-items:center;gap:.4rem}
.lang-btn svg{width:18px;height:18px;flex:none}
.lang-menu{position:absolute;right:0;top:calc(100% + 6px);z-index:8;min-width:15rem;max-height:70vh;overflow:auto;margin:0;padding:.4rem;list-style:none;background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.18)}
.lang-menu a,.lang-menu span.soon{display:flex;justify-content:space-between;gap:1rem;align-items:center;min-height:44px;padding:.35rem .7rem;border-radius:6px;text-decoration:none;color:var(--fg)}
.lang-menu a:hover{background:var(--accent-soft)}
.lang-menu [aria-current="true"]{font-weight:700;background:var(--accent-soft)}
.lang-menu .soon{color:var(--muted)}
.lang-menu small{font-size:.75rem;color:var(--muted);font-weight:400}
figcaption{padding:.8rem 1rem;font-size:.95rem;border-top:1px solid var(--line)}
figcaption strong{display:block;font-family:var(--f-display);font-weight:400;font-size:1.1rem;margin-bottom:.15rem}
details{border-top:1px solid var(--line);padding:.2rem 1rem}
summary{cursor:pointer;min-height:44px;display:flex;align-items:center;font-weight:700;color:var(--accent)}
details > div{padding-bottom:.8rem;font-size:.95rem}
.prompt{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.82rem;background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:.7rem;white-space:pre-wrap;overflow-wrap:anywhere}
.copy{margin-top:.5rem}

/* Mots expliqués */
.mots{margin:1.25rem 0 0;display:grid;gap:.6rem}
.mot{background:var(--accent-soft);border-radius:8px;padding:.7rem .9rem}
.mot dt{font-weight:700;font-family:var(--f-text);font-style:italic;font-size:1.05rem}
.mot dd{margin:.15rem 0 0}

/* Pied */
nav.chap{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin:3rem 0 1rem;padding-top:1.5rem;border-top:1px solid var(--line)}
footer{padding-block:1.5rem 3rem;font-size:.85rem;color:var(--muted)}
svg text{font-family:var(--f-ui)}
@media (prefers-reduced-motion: no-preference){ html{scroll-behavior:smooth} }

/* Accueil */
.btn-cta{display:inline-flex;align-items:center;text-decoration:none;background:var(--accent);color:var(--surface);border-color:var(--accent);font-weight:700;margin-top:.5rem}
.btn-cta:hover{color:var(--surface)}
.livres{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(11rem,1fr));gap:.4rem}
.livre{display:flex;justify-content:space-between;align-items:center;gap:.5rem;min-height:44px;padding:.4rem .7rem;border-radius:8px;border:1px solid var(--line);color:var(--muted);font-family:var(--f-text);font-size:1.02rem}
.livre small{font-family:var(--f-ui);font-size:.72rem}
a.livre{color:var(--fg);text-decoration:none;background:var(--accent-soft);border-color:var(--accent)}
a.livre:hover{border-width:2px}