:root{
  --ink:#0f1b33;--ink-2:#3a4560;--muted:#6b7590;--line:#e3e7f0;--bg:#f6f7fb;--white:#fff;
  --primary:#4f6bed;--primary-d:#3a55d6;--primary-l:#eef1fe;--ai:#7c5cff;
  --ok:#16a36a;--ok-l:#e8f7f0;--warn:#e8890c;--ko:#d6455d;--ko-l:#fdeef1;
  --r:14px;--shadow:0 1px 2px rgba(15,27,51,.04),0 4px 16px rgba(15,27,51,.06);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:var(--white);line-height:1.6;font-size:16px}
a{color:var(--primary)}
img{max-width:100%}
h1,h2,h3{line-height:1.2;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(28px,5vw,46px);font-weight:800}
h2{font-size:clamp(23px,3.4vw,32px);font-weight:750}
h3{font-size:18px;font-weight:650}
p{margin:0 0 1em}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.narrow{max-width:760px}
.muted{color:var(--muted)}
.small{font-size:14px}
.mt{margin-top:40px}
.inline{display:inline}
section{padding:64px 0}
.band{background:var(--bg)}
.sub{color:var(--ink-2);max-width:680px;margin-bottom:32px}

/* En-tête / pied */
.top{border-bottom:1px solid var(--line);background:rgba(255,255,255,.92);backdrop-filter:blur(8px);position:sticky;top:0;z-index:10}
.top-in{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-weight:800;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.logo span{color:var(--primary)}
.top nav{display:flex;gap:18px;align-items:center;font-size:15px}
.top nav a{color:var(--ink-2);text-decoration:none}
.top nav a:hover{color:var(--primary)}
.foot{background:var(--ink);color:#c8cfdf;padding:36px 0;font-size:14px}
.foot strong{color:#fff}
.foot .muted{color:#97a1b8}
.foot a{color:#fff}
.flash{background:var(--primary-l);border:1px solid #d6ddfc;color:var(--ink);padding:12px 16px;border-radius:10px;margin-top:16px}

/* Boutons */
.btn{display:inline-block;background:var(--primary);color:#fff;border:0;border-radius:10px;padding:11px 20px;font:600 15px Inter,sans-serif;text-decoration:none;cursor:pointer;transition:background .15s}
.btn:hover{background:var(--primary-d)}
.btn-lg{padding:15px 26px;font-size:16px}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--bg)}
button.link{background:none;border:0;color:var(--ink-2);font:inherit;cursor:pointer;padding:0;text-decoration:underline}

.eyebrow{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 16px}
.eyebrow span{font-size:13px;font-weight:600;color:var(--primary);background:var(--primary-l);border-radius:999px;padding:4px 12px}

/* Accueil */
.hero{padding:56px 0 64px;background:radial-gradient(1200px 400px at 80% -10%,#eef1fe 0,transparent 60%)}
.hero-in{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1 em{font-style:normal;color:var(--primary)}
.lead{font-size:19px;color:var(--ink-2);max-width:580px}
.hero-cta{margin-top:28px}
.hero-cta .small{margin-top:12px}
.roadmap{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:var(--shadow);position:relative}
.road-step{display:flex;gap:14px;align-items:flex-start;padding:10px 4px;position:relative}
.road-step:not(:last-child)::after{content:"";position:absolute;left:21px;top:50px;bottom:-8px;border-left:2px dashed #d6ddfc}
.road-icon{flex:0 0 36px;height:36px;border-radius:10px;background:var(--primary-l);display:grid;place-items:center;position:relative}
.road-icon::before{content:"";width:18px;height:18px;background:var(--primary);-webkit-mask:var(--ic) center/contain no-repeat;mask:var(--ic) center/contain no-repeat}
.road-step:last-child .road-icon{background:#f1edff}
.road-step:last-child .road-icon::before{background:var(--ai)}
.road-days{font-size:12px;color:var(--muted);margin:0;font-weight:600;text-transform:uppercase;letter-spacing:.04em}
.road-title{margin:0;font-weight:650;line-height:1.3}
.road-count{margin:0;font-size:13px;color:var(--muted)}
.i-spark{--ic:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2l2.4 7.6L22 12l-7.6 2.4L12 22l-2.4-7.6L2 12l7.6-2.4z'/%3E%3C/svg%3E")}
.i-home{--ic:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 3l9 8h-3v9h-5v-6h-2v6H6v-9H3z'/%3E%3C/svg%3E")}
.i-chat{--ic:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M4 4h16v12H8l-4 4z'/%3E%3C/svg%3E")}
.i-chart{--ic:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M4 20V10h4v10zm6 0V4h4v16zm6 0v-7h4v7z'/%3E%3C/svg%3E")}
.i-book{--ic:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 3h12a2 2 0 012 2v16H7a2 2 0 01-2-2zm2 14v2h10v-2z'/%3E%3C/svg%3E")}
.i-check{--ic:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 16.2l-4.2-4.2L3.4 13.4 9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E")}
.i-award{--ic:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2a7 7 0 110 14 7 7 0 010-14zm-4 13.5V22l4-2 4 2v-6.5a8.9 8.9 0 01-8 0z'/%3E%3C/svg%3E")}

.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow)}
.card h3{margin-bottom:6px}
.card p:last-child{margin-bottom:0}
.card.accent{border-color:#d9d0ff;background:linear-gradient(180deg,#faf8ff,#fff)}
.card.accent h3{color:var(--ai)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:24px}
.num{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--ink);color:#fff;font-weight:700;margin-bottom:12px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.ticks,.crosses{list-style:none;padding:0;margin:0 0 1em}
.ticks li,.crosses li{padding-left:28px;position:relative;margin:8px 0}
.ticks li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:700}
.crosses li::before{content:"✕";position:absolute;left:2px;color:var(--ko);font-weight:700}

.modules{display:grid;gap:10px}
.module{background:#fff;border:1px solid var(--line);border-radius:12px}
.module summary{display:flex;gap:12px;align-items:baseline;padding:16px 18px;cursor:pointer;list-style:none;flex-wrap:wrap}
.module summary::-webkit-details-marker{display:none}
.module summary::after{content:"+";margin-left:auto;color:var(--muted);font-size:20px;line-height:1}
.module[open] summary::after{content:"–"}
.mod-n{font-size:13px;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:.04em}
.mod-t{font-weight:650}
.mod-d{font-size:14px;color:var(--muted)}
.module ol{margin:0;padding:0 18px 16px 44px}
.module ol li{margin:4px 0}
.module li.no-num{list-style:none;margin-left:-20px;margin-top:10px}

.prompt,.sample{border-radius:12px;overflow:hidden;margin:20px 0;border:1px solid #23304f;background:#111c35}
.sample{background:#fbfaf6;border-color:#ece6d3}
.prompt-head,.sample-head{display:flex;justify-content:space-between;align-items:center;padding:8px 14px;font-size:13px;font-weight:600;color:#aeb8d3;border-bottom:1px solid #23304f}
.sample-head{color:#8a7a4b;border-bottom-color:#ece6d3}
.prompt pre,.sample pre{margin:0;padding:16px;overflow-x:auto;white-space:pre-wrap;word-break:break-word}
.prompt code{color:#e6ebff;font:14px/1.6 ui-monospace,SFMono-Regular,Menlo,monospace}
.sample code{color:#3b3424;font:14px/1.6 Inter,sans-serif}
.copy{background:#2b3a63;color:#fff;border:0;border-radius:7px;padding:5px 12px;font:600 13px Inter,sans-serif;cursor:pointer}
.copy.done{background:var(--ok)}

.cert-mini{border:2px solid #d6ddfc;border-radius:16px;padding:32px 24px;text-align:center;background:linear-gradient(180deg,#fff,#f5f7ff);box-shadow:var(--shadow)}
.cm-brand{font-weight:800;margin:0}.cm-brand span{color:var(--primary)}
.cm-title{font-size:30px;font-weight:800;margin:14px 0 0;letter-spacing:.06em;text-transform:uppercase}
.cm-sub{color:var(--muted);margin:0 0 18px}
.cm-name{font-size:24px;font-weight:700;border-bottom:1px solid var(--line);display:inline-block;padding:0 30px 4px;margin-bottom:18px}
.cm-code{font-size:13px;color:var(--muted);margin:0}

.price-card{max-width:520px;margin:0 auto;text-align:center;background:#fff;border:2px solid var(--primary);border-radius:20px;padding:36px 28px;box-shadow:var(--shadow)}
.price-card .eyebrow{justify-content:center}
.price{font-size:56px;font-weight:800;margin:0 0 12px;letter-spacing:-.03em}
.price-card .ticks{text-align:left;display:inline-block;margin-bottom:24px}
.row-form{display:flex;gap:8px;max-width:420px;margin:0 auto 8px}
.row-form input{flex:1}
input,textarea{font:inherit;color:inherit;border:1px solid var(--line);border-radius:10px;padding:11px 13px;width:100%;background:#fff}
input:focus,textarea:focus{outline:2px solid var(--primary-l);border-color:var(--primary)}
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{font-weight:600;cursor:pointer}
.faq details p{margin:10px 0 0;color:var(--ink-2)}
.final{text-align:center;background:var(--ink);color:#fff}
.final h2{margin-bottom:24px}

/* Connexion */
.auth-box{display:flex;justify-content:center;padding:64px 16px;background:var(--bg);min-height:60vh}
.auth-box .card{max-width:480px;width:100%}
.auth-box h1{font-size:28px}
.stack{display:grid;gap:14px}
label{display:grid;gap:6px;font-weight:600;font-size:15px}
.badge{display:inline-block;border-radius:999px;padding:4px 12px;font-size:13px;font-weight:700}
.badge.ok{background:var(--ok-l);color:var(--ok)}
.badge.ko{background:var(--ko-l);color:var(--ko)}

/* Espace élève */
.dash{padding:40px 16px 64px}
.dash-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:24px}
.dash-head h1{font-size:34px;margin:0}
.dash-head p{margin:0}
.progress-box{min-width:260px}
.progress-box p{margin:0 0 6px}
.bar{height:10px;background:var(--line);border-radius:99px;overflow:hidden}
.bar span{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--ai));border-radius:99px}
.today{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;margin-bottom:16px;border-color:#d6ddfc}
.today h2{font-size:22px;margin:0 0 4px}
.today p{margin:0}
.finals{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.final-item{display:flex;gap:14px;align-items:center;text-decoration:none;color:var(--ink);padding:16px}
.final-item h3{margin:0;font-size:16px}
.final-item p{margin:0}
.state{flex:0 0 34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--bg);font-weight:700;color:var(--muted)}
.final-item.ok .state{background:var(--ok-l);color:var(--ok)}
.lesson-list{list-style:none;margin:0;padding:0 8px 10px}
.lesson-list a{display:grid;grid-template-columns:28px 64px 1fr auto;gap:10px;align-items:center;padding:10px;border-radius:8px;text-decoration:none;color:var(--ink)}
.lesson-list a:hover{background:var(--bg)}
.chk{width:22px;height:22px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;font-size:12px;color:#fff}
.done .chk{background:var(--ok);border-color:var(--ok)}
.done .lt{color:var(--muted)}
.ln,.lm{font-size:13px;color:var(--muted)}

/* Leçon */
.lesson{max-width:760px;padding:32px 16px 64px}
.crumbs{font-size:14px;color:var(--muted)}
.crumbs a{color:var(--muted)}
.lesson-head{border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:28px}
.lesson-head h1{font-size:clamp(26px,4.4vw,38px)}
.deliv{background:var(--ok-l);border-radius:10px;padding:10px 14px;margin:0}
.prose h2{font-size:22px;margin-top:36px}
.prose h3{margin-top:28px}
.prose h4,.prose h5{margin:24px 0 8px;font-size:17px}
.prose ul,.prose ol{padding-left:22px}
.prose li{margin:6px 0}
.prose blockquote{margin:24px 0;padding:14px 18px;border-left:4px solid var(--warn);background:#fff7ec;border-radius:0 10px 10px 0}
.prose blockquote p:last-child{margin:0}
.prose code{background:var(--bg);border:1px solid var(--line);border-radius:5px;padding:1px 5px;font-size:.9em}
.prose .prompt code,.prose .sample code{background:none;border:0;padding:0;font-size:14px}
.prose .table{overflow-x:auto;margin:20px 0}
.prose table{border-collapse:collapse;width:100%;font-size:15px}
.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.prose th{background:var(--bg)}
.box{display:inline-block;width:14px;height:14px;border:2px solid var(--muted);border-radius:3px;margin-right:6px;vertical-align:-2px}
.lesson-done{margin:40px 0 24px;padding:24px;background:var(--bg);border-radius:var(--r);display:flex;gap:16px;align-items:center;flex-wrap:wrap;justify-content:center;text-align:center}
.lesson-done p{margin:0;font-weight:600;color:var(--ok)}
.pager{display:flex;justify-content:space-between;gap:16px;font-size:14px}
.pager a{color:var(--ink-2);text-decoration:none;max-width:48%}
.pager a:hover{color:var(--primary)}

/* Quiz, projet, certificat */
.quiz,.project{padding:32px 16px 64px}
.q{border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin:0 0 14px}
.q legend{font-weight:650;padding:0 6px;margin-left:-6px}
.q legend span{color:var(--primary)}
.opt{display:flex;gap:10px;align-items:flex-start;font-weight:400;padding:6px 8px;border-radius:8px;cursor:pointer}
.opt:hover{background:var(--bg)}
.opt input{width:auto;margin-top:6px}
.q.right{border-color:#bfe7d4;background:#f7fcf9}
.q.wrong{border-color:#f3c3cc;background:#fffafb}
.opt.is-answer{background:var(--ok-l);font-weight:600}
.explain{margin:10px 0 0;font-size:14px;color:var(--ink-2)}
.result{margin:16px 0 24px}
.result.ok{border-color:#bfe7d4;background:#f7fcf9}
.result.ko{border-color:#f3c3cc;background:#fffafb}
.score{font-size:40px;font-weight:800;margin:0}
.field{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}
.fl{font-size:17px}
.fh{font-weight:400;color:var(--muted);font-size:14px}
.fc{font-weight:400}
.has-error{border-color:var(--ko)}
.err{color:var(--ko);font-weight:500;font-size:14px}
.actions{display:flex;gap:12px;justify-content:flex-end;flex-wrap:wrap}
.checklist{list-style:none;padding:0;font-size:17px}
.checklist li{margin:8px 0}
.checklist li.ok{color:var(--ok)}
.legal h2{font-size:20px;margin-top:28px}
.legal{padding:40px 16px 64px}

@media (max-width:860px){
  .hero-in,.two{grid-template-columns:1fr;gap:32px}
  .grid3,.steps,.finals{grid-template-columns:1fr}
  section{padding:48px 0}
  .row-form{flex-direction:column}
  .lesson-list a{grid-template-columns:24px 1fr auto}
  .ln{display:none}
}
.logo,.top nav{white-space:nowrap}
@media (max-width:480px){.top nav{gap:12px;font-size:14px}.top nav a[href="/espace"]{display:none}}
.checkout{display:grid;gap:12px;margin:8px 0 12px;text-align:left}
.consent{display:flex;gap:10px;align-items:flex-start;font-weight:400;font-size:14px;line-height:1.5;background:var(--bg);border-radius:10px;padding:12px}
.consent input{width:auto;margin-top:4px;flex:0 0 auto}
.consent-hint{color:var(--warn);margin:0;text-align:center}
.checkout.ready .consent-hint{display:none}
.pay-paypal{min-height:48px;position:relative}
.checkout:not(.ready) .pay-paypal{opacity:.45;pointer-events:none}
.btn-block{display:block;text-align:center}
.btn.is-disabled{opacity:.45;pointer-events:none}
.pay-error{color:var(--ko);margin:0}
.logo img{display:block;height:36px;width:auto}
.foot-logo{display:block;height:32px;width:auto;margin-bottom:4px}
@media (max-width:480px){.logo img{height:30px}}
.cm-brand img{height:30px;width:auto;display:inline-block}