:root{
  --bg:#f7f4ed;
  --surface:#fffdf9;
  --ink:#25231f;
  --muted:#6f6a61;
  --copper:#a45a2a;
  --copper-dark:#713716;
  --gold:#c89b4c;
  --line:#ded7ca;
  --green:#65785e;
  --radius:22px;
  --shadow:0 18px 45px rgba(66,49,34,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
a{color:inherit}
.site-header{position:sticky;top:0;z-index:20;background:rgba(247,244,237,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.topbar{max-width:1240px;margin:auto;display:flex;align-items:center;gap:28px;padding:14px 22px}
.brand{text-decoration:none;display:flex;align-items:center;gap:11px;white-space:nowrap}
.brand-bsa{display:flex;font-size:1.55rem;font-weight:900;letter-spacing:-2px}
.brand-bsa b:nth-child(1){color:#1c63a7}.brand-bsa b:nth-child(2){color:#fff;text-shadow:0 0 0 #555,0 0 2px #555}.brand-bsa b:nth-child(3){color:#c8382d}
.brand-text{font-weight:800;letter-spacing:.05em}
.mainnav{margin-left:auto;display:flex;align-items:center;gap:19px;font-size:.93rem}
.mainnav a{text-decoration:none;font-weight:650}
.mainnav a:hover{color:var(--copper)}
.menu-toggle{display:none;margin-left:auto;border:1px solid var(--line);background:var(--surface);border-radius:12px;padding:8px 11px;font-size:1.2rem}
.langbar{max-width:1240px;margin:auto;padding:0 22px 10px;display:flex;align-items:center;gap:12px;color:var(--copper-dark);font-weight:800;font-size:.82rem}
.gtranslate_wrapper{min-height:28px}
.hero{max-width:1240px;margin:32px auto 0;padding:0 22px}
.hero-panel{position:relative;overflow:hidden;min-height:520px;border-radius:32px;background:linear-gradient(120deg,#fffdf9 0%,#efe5d7 55%,#e7d0b8 100%);box-shadow:var(--shadow);display:grid;grid-template-columns:1.08fr .92fr;align-items:center}
.hero-copy{padding:58px}
.eyebrow{display:inline-block;color:var(--copper-dark);font-weight:800;text-transform:uppercase;letter-spacing:.1em;font-size:.76rem}
h1{font-size:clamp(2.5rem,5vw,5.2rem);line-height:.97;margin:14px 0 20px;letter-spacing:-.045em}
h2{font-size:clamp(1.8rem,3vw,3rem);line-height:1.08;margin:0 0 14px;letter-spacing:-.025em}
h3{margin:0 0 8px}
.lead{font-size:1.11rem;color:var(--muted);max-width:720px}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:13px 20px;text-decoration:none;font-weight:800;border:1px solid var(--copper)}
.btn.primary{background:var(--copper);color:white}
.btn.secondary{background:transparent;color:var(--copper-dark)}
.hero-art{height:100%;min-height:520px;display:grid;place-items:center;position:relative}
.pyramid{width:min(380px,72%);aspect-ratio:1/1;position:relative;filter:drop-shadow(0 25px 30px rgba(100,50,20,.18))}
.pyramid:before,.pyramid:after{content:"";position:absolute;inset:8%;clip-path:polygon(50% 0,100% 88%,0 88%);border:8px solid #a45a2a;background:linear-gradient(145deg,rgba(255,255,255,.45),rgba(180,95,40,.06))}
.pyramid:after{transform:scale(.72);opacity:.55}
.section{max-width:1240px;margin:74px auto;padding:0 22px}
.section-head{max-width:800px;margin-bottom:28px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:0 10px 25px rgba(66,49,34,.055)}
.card .icon{width:48px;height:48px;border-radius:14px;background:#f1e3d6;display:grid;place-items:center;font-size:1.45rem;margin-bottom:16px}
.card p{color:var(--muted)}
.card a{font-weight:800;color:var(--copper-dark);text-decoration:none}
.split{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:stretch}
.lightbox{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px}
.note{border-left:4px solid var(--gold);padding:14px 18px;background:#fffaf0;border-radius:12px;color:#5f584c}
.site-footer{max-width:1240px;margin:80px auto 0;border-top:1px solid var(--line);padding:28px 22px 40px;display:flex;justify-content:space-between;gap:20px;color:var(--muted)}
.site-footer strong{color:var(--ink);display:block}
.footer-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-links a{text-decoration:none}
.calc-wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.calc{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.calc label{font-weight:800;display:block;margin-bottom:7px}
.calc input{width:100%;padding:13px 14px;border:1px solid #cfc7bb;border-radius:12px;font-size:1rem;background:white}
.calc button{margin-top:14px;border:0;border-radius:999px;padding:12px 18px;background:var(--copper);color:#fff;font-weight:800;cursor:pointer}
.results{margin-top:18px;padding:16px;background:#f4eee5;border-radius:14px;min-height:92px}
.kicker{font-weight:800;color:var(--green)}
@media(max-width:980px){
  .menu-toggle{display:block}
  .mainnav{display:none;position:absolute;top:64px;left:14px;right:14px;background:var(--surface);padding:18px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start}
  .mainnav.open{display:flex}
  .hero-panel{grid-template-columns:1fr}
  .hero-copy{padding:38px 28px}
  .hero-art{min-height:340px}
  .grid{grid-template-columns:1fr 1fr}
  .calc-wrap,.split{grid-template-columns:1fr}
}
@media(max-width:640px){
  .brand-text{font-size:.86rem}
  .grid{grid-template-columns:1fr}
  .site-footer{flex-direction:column}
  .hero{margin-top:18px}
  .hero-panel{min-height:auto}
  h1{font-size:2.6rem}
}


/* Historique & archives BSA */
.history-hero{padding-bottom:34px}
.history-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.history-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,.65fr);gap:24px;align-items:start}
.history-timeline{display:grid;gap:14px}
.history-step{display:grid;grid-template-columns:120px 1fr;gap:18px;background:#fff;border:1px solid rgba(90,70,45,.12);border-radius:18px;padding:20px;box-shadow:0 12px 30px rgba(50,40,25,.04)}
.history-step__date{font-size:1.05rem;font-weight:900;color:#b66b19;letter-spacing:.03em}
.history-step h2{margin:0 0 7px;font-size:1.15rem}
.history-step p{margin:0;color:#625b52;line-height:1.65}
.history-proof{position:sticky;top:18px}
.history-context{margin-top:4px}
.history-note{background:linear-gradient(135deg,#fff9ef,#f8f2e8);border:1px solid rgba(166,108,42,.18);border-radius:20px}
.history-note a{color:#8e5518}
@media(max-width:900px){
  .history-grid{grid-template-columns:1fr}
  .history-proof{position:static}
}
@media(max-width:620px){
  .history-step{grid-template-columns:1fr}
  .history-step__date{font-size:1rem}
}


/* Compteur de fréquentation BSA commun */
.bsa-live-counter{
  max-width:760px;margin:18px auto 16px;display:flex;align-items:center;justify-content:center;
  gap:16px;padding:10px 16px;border:1px solid rgba(62,73,82,.18);border-radius:14px;
  background:#f5f7f8;color:#23272b;box-shadow:0 6px 18px rgba(35,42,48,.045)
}
.bsa-live-counter__eye{font-size:21px}
.bsa-live-counter span{display:flex;flex-direction:column;gap:1px}
.bsa-live-counter small{font-size:9px;letter-spacing:.09em;color:#71808a;font-weight:900}
.bsa-live-counter strong{font-size:14px;color:#202428}
.bsa-live-counter i{display:block;width:1px;height:27px;background:#d4dade}
@media(max-width:620px){
  .bsa-live-counter{gap:9px;padding:9px 10px;flex-wrap:wrap;margin-left:12px;margin-right:12px}
  .bsa-live-counter i{display:none}
  .bsa-live-counter span{min-width:90px}
  .bsa-live-counter strong{font-size:12px}
}