:root{
  --bg:#f5f6fa;--surface:#ffffff;--surface-2:#eef1f7;--text:#15213b;--muted:#5a6478;--border:#dfe3ec;
  --primary:#0b1d3a;--primary-ink:#ffffff;--accent:#d9a521;--accent-ink:#1a1400;--link:#0f4c9c;--link-hover:#0b1d3a;
  --radius:12px;--shadow:0 1px 2px rgba(11,29,58,.06),0 8px 24px -16px rgba(11,29,58,.25);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0e1626;--surface:#141f33;--surface-2:#1b2740;--text:#e8ecf5;--muted:#a3adc2;--border:#263450;
    --primary:#08111f;--link:#8fb8ff;--link-hover:#ffffff;--accent:#e6b42f;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -16px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  --bg:#0e1626;--surface:#141f33;--surface-2:#1b2740;--text:#e8ecf5;--muted:#a3adc2;--border:#263450;
  --primary:#08111f;--link:#8fb8ff;--link-hover:#ffffff;--accent:#e6b42f;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:17px;line-height:1.65}
a{color:var(--link);text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{color:var(--link-hover)}
img,svg{max-width:100%}
.wrap{max-width:1100px;margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:var(--accent-ink);padding:8px 12px;z-index:100}
.skip:focus{left:8px;top:8px}

/* En-tête */
.site-header{background:var(--primary);color:var(--primary-ink)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 16px;flex-wrap:wrap}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:700;font-size:1.15rem;letter-spacing:.2px}
.brand-mark{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:10px;background:var(--accent);color:var(--accent-ink);font-weight:900;font-size:1.25rem}
.site-nav{display:flex;gap:4px;flex-wrap:wrap}
.site-nav a{color:#dbe3f3;text-decoration:none;padding:8px 12px;border-radius:8px;font-size:.95rem}
.site-nav a:hover,.site-nav a[aria-current]{background:rgba(255,255,255,.1);color:#fff}
.age-bar{background:#06132a;color:#c9d3e8;font-size:.85rem;padding:6px 0;border-top:1px solid rgba(255,255,255,.06)}
.age-bar strong{display:inline-block;background:var(--accent);color:var(--accent-ink);border-radius:6px;padding:0 6px;margin-right:8px;font-weight:800}
.age-bar a{color:#fff}

/* Bannière partenaire */
.banner{max-width:1100px;margin:16px auto 8px}
.banner a{display:block;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);background:#2f8fe8;transition:transform .15s}
.banner a:hover{transform:translateY(-2px)}
.banner img{display:block;width:100%;height:auto;aspect-ratio:1440/432}
.banner-note{margin:6px 2px 0;font-size:.75rem;color:var(--muted);text-align:right}
.banner-bottom{margin-top:40px}

/* Fil d'Ariane */
.breadcrumb{font-size:.88rem;color:var(--muted);padding-top:14px}
.breadcrumb ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px}
.breadcrumb li+li::before{content:"›";margin:0 6px;color:var(--muted)}

/* Contenu */
main{padding:16px 16px 48px}
.guide,.hub,.page{max-width:860px;margin:0 auto}
.guide-head{margin:12px 0 24px}
.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;color:var(--muted);margin:0 0 8px;font-weight:600}
h1{font-size:clamp(1.65rem,2.6vw + 1rem,2.5rem);line-height:1.15;margin:0 0 14px;letter-spacing:-.01em}
h2{font-size:1.45rem;line-height:1.25;margin:40px 0 12px;letter-spacing:-.005em}
h3{font-size:1.1rem;margin:0}
p{margin:0 0 14px}
.lead{font-size:1.12rem;color:var(--text);opacity:.92}
.updated{font-size:.85rem;color:var(--muted)}
section>p:last-child{margin-bottom:0}

.toc{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 18px;margin:0 0 24px;box-shadow:var(--shadow)}
.toc-title{font-weight:700;margin:0 0 6px;font-size:.9rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.toc ol{margin:0;padding-left:20px;columns:2;column-gap:24px;font-size:.95rem}
.toc li{break-inside:avoid;margin:3px 0}
.toc a{text-decoration:none}
.toc a:hover{text-decoration:underline}

.keypoints{background:linear-gradient(135deg,var(--surface-2),var(--surface));border-left:4px solid var(--accent);border-radius:var(--radius);padding:18px 20px;margin:0 0 8px}
.keypoints h2{margin-top:0;font-size:1.2rem}
.keypoints ul{margin:0;padding-left:20px}
.keypoints li{margin:6px 0}

.variants{font-size:.92rem;color:var(--muted);background:var(--surface-2);border-radius:8px;padding:10px 14px;margin:28px 0 0}

/* Grilles de liens */
.links{margin-top:36px}
.link-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:8px}
.link-grid li{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:10px 12px;display:flex;flex-direction:column;gap:2px}
.link-grid a{text-decoration:none;font-weight:600;font-size:.95rem}
.link-grid a:hover{text-decoration:underline}
.link-grid .meta{font-size:.78rem;color:var(--muted)}

.card-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.card a{display:flex;flex-direction:column;gap:6px;height:100%;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;text-decoration:none;color:var(--text);box-shadow:var(--shadow);transition:transform .15s,border-color .15s}
.card a:hover{transform:translateY(-2px);border-color:var(--accent)}
.card-title{font-weight:700;font-size:1.05rem;color:var(--link)}
.card-desc{font-size:.9rem;color:var(--muted)}
.card-meta{margin-top:auto;font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);font-weight:700}

/* FAQ */
.faq{margin-top:40px}
.faq details{background:var(--surface);border:1px solid var(--border);border-radius:10px;margin:8px 0;padding:0 16px}
.faq summary,.page summary{cursor:pointer;padding:14px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker,.page summary::-webkit-details-marker{display:none}
.faq summary::after,.page summary::after{content:"+";font-size:1.4rem;color:var(--accent);font-weight:700;flex:none}
details[open] summary::after{content:"–"}
.faq-a{padding:0 0 14px;color:var(--text)}
.page details{background:var(--surface);border:1px solid var(--border);border-radius:10px;margin:8px 0;padding:0 16px}

/* Accueil */
.hero{background:radial-gradient(1200px 400px at 10% -20%,rgba(217,165,33,.25),transparent 60%),var(--primary);color:#fff;border-radius:18px;padding:clamp(28px,5vw,56px);margin:8px 0 32px}
.hero h1{color:#fff;max-width:760px}
.hero .accent{color:var(--accent)}
.hero .lead{color:#d8e0f0;max-width:720px}
.hero-cta{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0 8px}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);font-weight:700;padding:11px 18px;border-radius:10px;text-decoration:none}
.btn:hover{filter:brightness(1.05);color:var(--accent-ink)}
.btn-secondary{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.25)}
.btn-secondary:hover{color:#fff;background:rgba(255,255,255,.2)}
.hero-stats{display:flex;gap:24px;flex-wrap:wrap;color:#c9d3e8;font-size:.95rem;margin:16px 0 0}
.hero-stats strong{color:#fff;font-size:1.3rem;margin-right:4px}

.tree,.tree ul{list-style:none;padding-left:18px}
.columns{columns:3;column-gap:24px;padding-left:20px}
.columns li{break-inside:avoid}

/* Pied de page */
.site-footer{background:var(--primary);color:#c9d3e8;margin-top:40px;font-size:.92rem}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:28px;padding:36px 16px 20px}
.footer-brand{color:#fff;font-weight:800;font-size:1.1rem;margin:0 0 8px}
.footer-title{color:#fff;font-weight:700;margin:0 0 8px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:4px 0}
.site-footer a{color:#dbe3f3}
.badge-row{display:flex;gap:6px;flex-wrap:wrap}
.badge{display:inline-block;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:999px;padding:2px 10px;font-size:.78rem;color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:14px 16px;font-size:.82rem}

@media (max-width:640px){
  body{font-size:16px}
  .toc ol,.columns{columns:1}
  .header-inner{padding:12px 16px}
  .site-nav a{padding:6px 8px;font-size:.9rem}
}
@media print{.site-header,.site-footer,.toc,.links{display:none}}