/* ============================================================
   Méridien Télécom — pages de contenu (Lexique, FAQ)
   Charte alignée sur front-page.php (clair, bleu/cyan).
   ============================================================ */
:root{
  --ink:#0B1B33; --ink2:#3D4D63; --ink3:#6B788C;
  --primary:#1656E0; --primary-d:#0E3FB0; --accent:#06B6D4;
  --bg:#FFFFFF; --soft:#F4F8FD; --soft2:#EAF1FB; --line:#E4EAF3;
  --maxw:1200px; --radius:18px;
  --shadow:0 18px 50px rgba(13,40,90,.10); --shadow-sm:0 6px 22px rgba(13,40,90,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:'Inter',system-ui,sans-serif;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:clip}
h1,h2,h3,h4{font-family:'Plus Jakarta Sans',sans-serif;color:var(--ink);line-height:1.14;letter-spacing:-.02em;margin:0}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* Boutons */
.btn{display:inline-flex;align-items:center;gap:9px;font-family:'Plus Jakarta Sans';font-weight:700;font-size:15px;padding:13px 24px;border-radius:12px;border:1.5px solid transparent;cursor:pointer;transition:transform .18s,box-shadow .18s,background .18s,border-color .18s;white-space:nowrap}
.btn:hover{transform:translateY(-2px)}
.btn-pri{background:linear-gradient(135deg,var(--primary),var(--primary-d));color:#fff;box-shadow:0 10px 24px rgba(22,86,224,.28)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}

/* Nav */
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
.nav-in{max-width:var(--maxw);margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:11px;font-family:'Plus Jakarta Sans';font-weight:800;font-size:19px;letter-spacing:-.02em;color:var(--ink)}
.brand-mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(22,86,224,.3);flex:none}
.brand small{display:block;font-size:9.5px;font-weight:700;letter-spacing:.22em;color:var(--ink3);margin-top:1px}
.nav-links{display:flex;gap:26px;margin-left:auto;align-items:center}
.nav-links a{font-weight:600;font-size:14.5px;color:var(--ink2);transition:color .18s}
.nav-links a:hover,.nav-links a.is-active{color:var(--primary)}
.nav-cta{display:flex;gap:10px;align-items:center}
@media(max-width:860px){.nav-links{display:none}.nav-cta .btn-ghost{display:none}}

/* Hero de page */
.page-hero{background:linear-gradient(180deg,var(--soft) 0%,#fff 100%);border-bottom:1px solid var(--line);padding:64px 0 52px}
.eye{display:inline-flex;align-items:center;gap:8px;font-family:'Plus Jakarta Sans';font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);margin-bottom:14px}
.page-hero h1{font-size:clamp(30px,4.4vw,50px);font-weight:800}
.page-hero h1 .hl{background:linear-gradient(120deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero .lead{font-size:clamp(16px,1.5vw,18.5px);color:var(--ink2);max-width:680px;margin:18px 0 0;line-height:1.66}

/* Sommaire d'ancres (lexique) */
.toc{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.toc a{font-family:'Plus Jakarta Sans';font-weight:600;font-size:13px;color:var(--ink2);background:#fff;border:1px solid var(--line);padding:8px 14px;border-radius:999px;transition:.18s}
.toc a:hover{border-color:var(--primary);color:var(--primary)}

/* Section */
.sec{padding:54px 0}
.sec + .sec{border-top:1px solid var(--line)}
.sec-h{font-size:clamp(20px,2.4vw,26px);font-weight:800;margin-bottom:6px}
.sec-h .num{color:var(--accent);font-family:'Plus Jakarta Sans';margin-right:10px}
.sec-sub{color:var(--ink3);font-size:14.5px;margin:0 0 26px}

/* Lexique — cartes de termes */
.lex{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:760px){.lex{grid-template-columns:1fr}}
.term{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;box-shadow:var(--shadow-sm);transition:transform .18s,border-color .18s,box-shadow .18s}
.term:hover{transform:translateY(-3px);border-color:#CFE0FA;box-shadow:var(--shadow)}
.term dt{font-family:'Plus Jakarta Sans';font-weight:700;font-size:16.5px;color:var(--ink);display:flex;align-items:baseline;gap:10px;margin-bottom:7px}
.term dt .abbr{font-size:11px;font-weight:700;letter-spacing:.06em;color:var(--primary);background:var(--soft2);border-radius:6px;padding:3px 8px;white-space:nowrap}
.term dd{margin:0;color:var(--ink2);font-size:14.5px;line-height:1.6}

/* FAQ — accordéon natif */
.faq{display:flex;flex-direction:column;gap:12px;max-width:860px}
.qa{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .18s}
.qa[open]{border-color:#CFE0FA}
.qa summary{list-style:none;cursor:pointer;padding:20px 24px;font-family:'Plus Jakarta Sans';font-weight:700;font-size:16.5px;color:var(--ink);display:flex;align-items:center;gap:14px}
.qa summary::-webkit-details-marker{display:none}
.qa summary .chev{margin-left:auto;width:22px;height:22px;flex:none;color:var(--primary);transition:transform .22s}
.qa[open] summary .chev{transform:rotate(180deg)}
.qa .a{padding:0 24px 22px;color:var(--ink2);font-size:15px;line-height:1.7}
.qa .a p{margin:0 0 10px}
.qa .a strong{color:var(--ink)}

/* CTA bas de page */
.cta{background:var(--ink);border-radius:var(--radius);padding:42px 36px;text-align:center;color:#fff;margin:14px 0 0}
.cta h2{color:#fff;font-size:clamp(22px,3vw,30px);font-weight:800}
.cta p{color:#AFC0DC;max-width:540px;margin:12px auto 24px;font-size:15.5px}
.cta .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.25)}

/* Footer */
.foot{background:var(--ink);color:#C7D3E6;padding:56px 0 30px;margin-top:60px}
.foot .brand{color:#fff}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px}
@media(max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.foot-grid{grid-template-columns:1fr}}
.foot .fd{color:#8597B5;font-size:13.5px;line-height:1.6;margin:14px 0 0;max-width:300px}
.foot h4{color:#fff;font-size:13px;font-family:'Plus Jakarta Sans';font-weight:700;letter-spacing:.04em;margin:0 0 14px}
.foot ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.foot ul a{color:#9DB0CC;font-size:14px;transition:color .18s}
.foot ul a:hover{color:#fff}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:38px;padding-top:22px;font-size:12.5px;color:#7E8FAC;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}