@import url("../assets/bp-premium-system-v1.css");
:root{--ink:#122b36;--deep:#102a35;--orange:#f16e43;--paper:#f5f4f0;--muted:#60737c}body{background:#e8edef;color:var(--ink)}.top{background:var(--deep);color:white;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 28px;flex-wrap:wrap}.brand{text-decoration:none;font-weight:900;letter-spacing:.03em}.brand small{font-size:10px;display:block;letter-spacing:.13em;opacity:.7}.tabs{display:flex;gap:4px;background:#254451;padding:5px;border-radius:8px}.tabs button{color:white;background:transparent;border:0;border-radius:6px;padding:10px 14px;font-size:13px;font-weight:750}.tabs button[aria-pressed=true]{background:var(--orange);color:#102a35}.status{font-size:12px;opacity:.8}.layout{display:grid;grid-template-columns:310px minmax(0,1fr);max-width:1530px;margin:26px auto;gap:24px;padding:0 24px}.sidebar{background:#fff;border-radius:12px;padding:28px;align-self:start}.kicker,.overline,.eyebrow{font-weight:850;font-size:11px;letter-spacing:.15em;color:#bd633e}.sidebar h1{font-size:26px;line-height:1.14;margin:12px 0}.muted,.source{color:var(--muted);font-size:13px}.sidebar nav{display:grid;gap:6px;margin:22px 0}.sidebar nav button{display:flex;align-items:start;text-align:left;gap:14px;color:#25444f;border:0;background:#f5f7f6;padding:13px;line-height:1.25;border-radius:6px}.sidebar nav button span{color:var(--orange);font-weight:850}.sidebar nav button.selected{background:var(--deep);color:white}.source{border-top:1px solid #e1e5e4;padding-top:14px}.main{min-width:0}.overline{display:flex;justify-content:space-between;margin:5px 0 14px}.paper{background:#fff;min-height:540px;border-top:7px solid var(--orange);box-shadow:0 18px 55px #1a30321a;padding:clamp(25px,5vw,64px);border-radius:8px}.paper h2{font:normal clamp(32px,4vw,56px)/1.08 Georgia,serif;max-width:850px;letter-spacing:-.025em;margin:16px 0 28px}.lead{font-size:20px;line-height:1.6;max-width:850px;color:#415d67}.content{margin-top:28px}.point{display:flex;gap:20px;align-items:start;padding:17px 8px;border-bottom:1px solid #e3e8e7;font-size:18px;line-height:1.5}.point p{margin:0}.number{font-weight:900;color:var(--orange);min-width:28px}.takeaway{background:var(--deep);color:white;padding:25px;margin-top:32px;border-radius:6px}.takeaway span{color:#ff9976;letter-spacing:.14em;font-weight:850;font-size:11px}.takeaway p{margin:10px 0 0;font-size:19px;line-height:1.5}.is-spoken{outline:3px solid var(--orange);outline-offset:4px;border-radius:4px}.controls{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:20px 0}.controls button,.controls select,.coach button{border:1px solid #cad7d7;background:#fff;color:var(--deep);padding:10px 15px;border-radius:7px;font-weight:700}.controls button:disabled{opacity:.35}.controls label{font-size:13px}.coach{background:white;padding:26px;border-radius:9px;margin:20px 0}.coach h3{margin-top:0}.coach textarea{width:100%;display:block;padding:12px;margin:10px 0;font:inherit;border:1px solid #c7d7d5}.coach small{display:block;color:var(--muted);margin-top:10px}.notice{color:#985129}.sr-only{position:absolute;clip:rect(0 0 0 0);overflow:hidden;width:1px;height:1px}@media(max-width:900px){.layout{grid-template-columns:1fr}.sidebar nav{max-height:240px;overflow:auto}.top{padding:14px}.status{display:none}}body[data-mode=projection] .sidebar,body[data-mode=projection] .coach{display:none}body[data-mode=projection] .layout{display:block;max-width:1550px}body[data-mode=projection] .paper{min-height:72vh}body[data-mode=projection] .paper h2{font-size:clamp(40px,5vw,80px)}@media print{.top,.sidebar,.controls,.coach,.overline{display:none!important}.layout{display:block;margin:0;padding:0}.paper{min-height:0;border:0;box-shadow:none;padding:8mm;background:white;color:black}.paper h2{font-size:27pt}.lead,.point{font-size:13pt}.takeaway{background:white;color:black;border:1px solid black;break-inside:avoid}.takeaway span{color:black}body{background:white}@page{size:A4;margin:12mm}}
/* C01 : mise en relief de la formule et des données originales (aucun chiffre ajouté) */
.worked-visual{border:1px solid #dbe4e2;background:#f3f7f6;border-radius:9px;padding:24px;margin:22px 0}
.visual-title{font-size:11px;letter-spacing:.13em;font-weight:850;color:#a34d2f;text-transform:uppercase}
.formula-large{font-family:Georgia,serif;font-size:clamp(27px,3.2vw,49px);letter-spacing:.015em;line-height:1.3;margin:14px 0;color:#102a35;overflow-wrap:anywhere}
.formula-keys{display:flex;flex-wrap:wrap;gap:10px}
.formula-keys span{border-left:3px solid #ed764d;background:#fff;padding:8px 12px;font-size:13px;line-height:1.4}
.formula-keys b{display:block;font-size:19px;color:#122f39}
.result-equation{border-top:1px solid #c9d8d5;margin:20px 0 0;padding-top:18px;font-size:clamp(23px,2.8vw,36px);font-weight:750;color:#143e46}
.result-equation small{display:block;font-size:14px;font-weight:500;margin-top:5px}
@media print{.worked-visual{background:#fff;border:1px solid #888;break-inside:avoid}.formula-keys span{border:1px solid #bbb}}

/* Lien aux activités C01 validées : conserve la charte Industrial Editorial Premium. */
.studio-action-link{display:inline-block;margin:8px 0 12px;background:#102a35;color:white!important;border-radius:7px;padding:12px 18px;text-decoration:none;font-weight:800}
.studio-action-link:hover,.studio-action-link:focus-visible{background:#245567}
@media print{.studio-action-link{display:none}}


/* C02 — visuels pédagogiques intégrés à la projection et synchronisables avec la voix. */
.c02-projection-visual{border:1px solid #d1dfdf;background:#f4f8f7;padding:16px 21px;margin:21px 0 17px;border-radius:8px;color:#173742;break-inside:avoid}
.c02-visual-kicker{font-size:11px;font-weight:900;letter-spacing:.12em;text-transform:uppercase;color:#a04d32;margin-bottom:10px}
.c02-projection-exchanger svg{display:block;width:100%;height:auto;max-height:234px}
.c02-projection-exchanger figcaption{font-size:13px;color:#45626d;line-height:1.5}
.c02-variable-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.c02-variable-grid .c02-visual-kicker{grid-column:1/-1;margin:0}
.c02-variable{background:#fff;border-left:4px solid #cb6744;padding:14px 15px;display:flex;gap:12px;align-items:center;font-size:17px}
.c02-variable strong{font-size:24px;min-width:45px;color:#113d4b}
.c02-variable span{font-size:16px;line-height:1.36}
.c02-projection-equation{font-size:clamp(27px,3.7vw,57px);font-weight:850;text-align:center;line-height:1.3}
.c02-projection-result{font-size:clamp(25px,3vw,42px);font-weight:900;text-align:center;color:#176072;margin:9px 0}
.c02-units,.c02-projection-conversion small,.c02-projection-inverse small{display:block;text-align:center;margin-top:10px;font-size:15px;color:#506974;line-height:1.5}
.c02-projection-conversion>div:not(.c02-visual-kicker){display:flex;justify-content:center;gap:17px;align-items:center;flex-wrap:wrap;font-size:clamp(23px,2.9vw,39px);font-weight:800;line-height:1.3}
.c02-projection-conversion>div>span{font-size:.65em;color:#9f4b2e}
.c02-projection-conversion>div>strong{color:#15556b}
body[data-mode=projection] .c02-projection-visual{margin:16px 0;padding:18px 25px}
body[data-mode=projection] .c02-projection-exchanger svg{max-height:275px}
body[data-mode=projection] .paper:has(.c02-projection-visual) h2{font-size:clamp(34px,4.4vw,65px);margin:12px 0 18px}
body[data-mode=projection] .paper:has(.c02-projection-visual) .lead{font-size:19px;line-height:1.42}
body[data-mode=projection] .paper:has(.c02-projection-visual) .point{padding:10px 6px;font-size:16px}
body[data-mode=projection] .paper:has(.c02-projection-visual) .takeaway{padding:17px 21px;margin-top:17px}
body[data-mode=projection] .paper:has(.c02-projection-visual) .takeaway p{font-size:17px}
@media(max-width:780px){.c02-variable-grid{grid-template-columns:1fr}.c02-projection-exchanger svg{max-height:195px}.c02-projection-visual{padding:13px 11px}.c02-variable{padding:9px 11px}}
@media print{.c02-projection-visual{display:none!important}}


/* C02 : lien oral/visuel explicite au C01, même puissance, débits distincts. */
.c02-bridge{border-left:4px solid #c46a48;background:#eef4f4;padding:12px 16px;margin:14px 0 6px}
.c02-bridge-heading{text-transform:uppercase;font-size:11px;letter-spacing:.08em;color:#9d4c30;font-weight:900;margin-bottom:8px}
.c02-bridge-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
.c02-bridge-card{background:#fff;padding:10px 12px;border:1px solid #d3e1e2;min-width:0;transition:background-color .2s,outline-color .2s}
.c02-bridge-card strong{display:block;font-size:15px;color:#153d4b;margin-bottom:3px}
.c02-bridge-card span{display:block;font-size:14px;line-height:1.45}
.c02-bridge-conclusion{font-size:13px;font-weight:700;line-height:1.4;margin:8px 0 0}
.c02-bridge-card.is-spoken,.c02-bridge-conclusion.is-spoken{background:#faede5;outline:3px solid #c46a48;outline-offset:2px}
body[data-mode=projection] .c02-projection-exchanger svg{max-height:140px}
body[data-mode=projection] .c02-projection-exchanger figcaption{font-size:12px}
body[data-mode=projection] .c02-bridge{margin:12px 0 4px;padding:12px 14px}
body[data-mode=projection] .c02-bridge-card strong{font-size:18px}
body[data-mode=projection] .c02-bridge-card span{font-size:16px}
body[data-mode=projection] .c02-bridge-conclusion{font-size:15px}
@media(max-width:780px){.c02-bridge-grid{grid-template-columns:1fr}.c02-bridge-card{padding:8px 10px}}