/* —————————— RESET & BASE —————————— */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Poppins', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f4f7fb;
            color: #1a1a2e;
            line-height: 1.5;
            padding: 0 1rem 1rem 1rem;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        :root {
            --primary: #e85d3a;
            --primary-soft: #f48163;
            --secondary: #25316e;
            --accent: #16b67a;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --gray-light: #eaf0f5;
            --shadow: 0 12px 30px -8px rgba(0, 20, 30, 0.10);
            --radius: 28px;
            --radius-sm: 14px;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.2s, background 0.2s;
        }
        a:hover {
            color: var(--primary);
        }
        img, svg {
            display: block;
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1380px;
            margin: 0 auto;
            width: 100%;
            flex: 1;
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 2rem;
            padding-top: 1rem;
        }
        /* —————————— SKIP LINK —————————— */
        .skip-link {
            background: var(--secondary);
            color: #fff;
            padding: 0.4rem 1.2rem;
            border-radius: 0 0 8px 8px;
            position: absolute;
            top: -100%;
            left: 1rem;
            transition: top 0.2s;
            z-index: 100;
        }
        .skip-link:focus { top: 0; }
        :focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }

        /* —————————— HEADER —————————— */
        .header {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0 0.5rem 0;
            border-bottom: 2px solid rgba(37, 49, 110, 0.08);
            max-width: 1380px;
            margin: 0 auto;
            width: 100%;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .logo svg {
            width: 32px;
            height: 32px;
            -webkit-text-fill-color: initial;
        }
        .logo .badge {
            background: var(--primary);
            color: #fff;
            font-size: 0.7rem;
            padding: 0.15rem 0.8rem;
            border-radius: 40px;
            -webkit-text-fill-color: #fff;
            background-clip: unset;
            letter-spacing: 0.02em;
        }

        /* ---- Navigation principale (full CSS, accessible) ---- */
        .nav-menu {
            display: flex;
            flex-wrap: wrap;
            gap: 0.2rem 1rem;
            align-items: center;
        }
        .nav-menu a {
            color: var(--text);
            opacity: 0.75;
            padding: 0.3rem 0.1rem;
            border-bottom: 2px solid transparent;
            font-size: 0.95rem;
        }
        .nav-menu a:hover {
            opacity: 1;
            border-bottom-color: var(--primary);
            text-decoration: none;
        }
        .nav-menu .btn-outline {
            border: 1.5px solid var(--secondary);
            padding: 0.3rem 1.2rem;
            border-radius: 60px;
            background: transparent;
            font-weight: 600;
            color: var(--secondary);
            opacity: 1;
            border-bottom: 1.5px solid var(--secondary);
        }
        .nav-menu .btn-outline:hover {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }

        /* —————————— SIDEBAR —————————— */
        #sidebar {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 1.5rem 1.2rem;
            box-shadow: var(--shadow);
            align-self: start;
            border: 1px solid rgba(0,0,0,0.02);
        }
        #sidebar h3 {
            font-size: 1.1rem;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--secondary);
        }
        #sidebar h3 svg {
            width: 22px;
            height: 22px;
            flex-shrink: 0;
        }
        .tree-nav details {
            margin-bottom: 0.6rem;
            border-radius: 8px;
            padding: 0.2rem 0;
        }
        .tree-nav summary {
            font-weight: 600;
            cursor: pointer;
            padding: 0.3rem 0.5rem;
            border-radius: 6px;
            transition: background 0.15s;
            color: var(--secondary);
            list-style: none;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .tree-nav summary::-webkit-details-marker { display: none; }
        .tree-nav summary:hover {
            background: var(--gray-light);
        }
        .tree-nav summary svg {
            width: 16px;
            height: 16px;
            flex-shrink: 0;
            transition: transform 0.2s;
        }
        .tree-nav details[open] > summary svg {
            transform: rotate(90deg);
        }
        .tree-nav ul {
            list-style: none;
            padding-left: 1.8rem;
            margin-top: 0.3rem;
            border-left: 2px solid var(--gray-light);
        }
        .tree-nav ul li {
            padding: 0.15rem 0;
        }
        .tree-nav ul li a {
            font-size: 0.9rem;
            opacity: 0.8;
            display: inline-block;
            padding: 0.1rem 0.2rem;
            border-radius: 4px;
        }
        .tree-nav ul li a:hover {
            opacity: 1;
            background: var(--gray-light);
            text-decoration: none;
        }

        /* —————————— MAIN CONTENT —————————— */
        main {
            display: flex;
            flex-direction: column;
            gap: 2.5rem;
        }

        /* HERO */
        .hero {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 2.5rem 2rem;
            box-shadow: var(--shadow);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: center;
            border-left: 6px solid var(--primary);
        }
        .hero h1 {
            font-size: clamp(2rem, 4.5vw, 3.2rem);
            font-weight: 700;
            line-height: 1.1;
            letter-spacing: -0.02em;
            margin-bottom: 0.8rem;
        }
        .hero p {
            font-size: 1.1rem;
            opacity: 0.8;
            max-width: 30rem;
            margin-bottom: 1.5rem;
        }
        .hero-cta {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .btn-primary {
            background: var(--primary);
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 60px;
            font-weight: 600;
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 6px 14px rgba(232, 93, 58, 0.35);
            transition: 0.2s;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-primary:hover {
            background: #cc4d2e;
            transform: scale(1.02);
            color: #fff;
            text-decoration: none;
        }
        .btn-secondary {
            background: #fff;
            border: 1px solid var(--gray-light);
            padding: 0.7rem 2rem;
            border-radius: 60px;
            font-weight: 600;
            color: var(--secondary);
            box-shadow: var(--shadow);
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-secondary:hover {
            background: var(--gray-light);
            border-color: var(--secondary);
            text-decoration: none;
        }
        .hero-visual {
            background: radial-gradient(circle at 30% 30%, #ffe6dc, #f3eae6);
            border-radius: 32px 32px 32px 8px;
            padding: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
            align-items: center;
            min-height: 180px;
            box-shadow: var(--shadow);
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'%3E%3Ccircle cx='40' cy='40' r='18' fill='%23e85d3a' opacity='0.15'/%3E%3Ccircle cx='150' cy='80' r='30' fill='%2325316e' opacity='0.08'/%3E%3Ccircle cx='80' cy='140' r='25' fill='%2316b67a' opacity='0.12'/%3E%3C/svg%3E");
            background-size: cover;
        }
        .hero-badge {
            background: rgba(255,255,255,0.8);
            backdrop-filter: blur(4px);
            padding: 0.5rem 1.2rem;
            border-radius: 80px;
            font-weight: 600;
            box-shadow: var(--shadow);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        /* CARDS */
        .section-title {
            font-size: 1.8rem;
            font-weight: 600;
            margin: 0.5rem 0 1.2rem 0;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .section-title small {
            font-size: 0.9rem;
            font-weight: 400;
            opacity: 0.6;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
            gap: 1.5rem;
        }
        .card {
            background: var(--bg-card);
            padding: 1.8rem 1.2rem;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            transition: 0.2s;
            border: 1px solid rgba(0,0,0,0.02);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 18px 30px -12px rgba(0,0,0,0.12);
        }
        .card-icon {
            margin-bottom: 0.8rem;
        }
        .card-icon svg {
            width: 32px;
            height: 32px;
        }
        .card h3 {
            font-size: 1.2rem;
            margin-bottom: 0.4rem;
        }
        .card p {
            opacity: 0.75;
            font-size: 0.95rem;
        }
        .card-tag {
            display: inline-block;
            background: var(--primary-soft);
            color: #fff;
            font-size: 0.7rem;
            padding: 0.2rem 1rem;
            border-radius: 40px;
            margin-top: 0.8rem;
            font-weight: 600;
        }

        /* TIMELINE */
        .timeline-wrap {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 1.5rem;
            box-shadow: var(--shadow);
            border-left: 6px solid var(--secondary);
        }
        .timeline-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 0.8rem;
            margin-top: 0.5rem;
        }
        .timeline-item {
            background: var(--gray-light);
            padding: 0.25rem 1.2rem;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--secondary);
            transition: 0.1s;
            border: 1px solid transparent;
        }
        .timeline-item strong { color: var(--text); }
        .timeline-item:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            cursor: default;
        }

        /* INTERACT BANNER */
        .interact-banner {
            background: var(--secondary);
            color: #fff;
            border-radius: var(--radius);
            padding: 2rem 1.8rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1.5rem;
            background-image: radial-gradient(circle at 10% 20%, #4a5b9e, #1a264f);
        }
        .interact-banner h2 {
            font-size: 1.6rem;
            font-weight: 600;
        }
        .interact-banner p { opacity: 0.85; max-width: 26rem; }
        .interact-banner .btn-primary {
            background: #fff;
            color: var(--secondary);
            box-shadow: none;
        }
        .interact-banner .btn-primary:hover {
            background: var(--primary);
            color: #fff;
        }

        /* FOOTER */
        .footer {
            margin-top: 3rem;
            padding: 1.5rem 0 0.5rem 0;
            border-top: 1px solid var(--gray-light);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1rem;
            font-size: 0.9rem;
            opacity: 0.7;
            max-width: 1380px;
            margin-left: auto;
            margin-right: auto;
            width: 100%;
        }
        .footer a { color: var(--text); }

        /* —————————— RESPONSIVE —————————— */
        @media (max-width: 900px) {
            .container {
                grid-template-columns: 1fr;
            }
            #sidebar {
                order: -1;
            }
            .hero {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hero p { margin-left: auto; margin-right: auto; }
            .hero-cta { justify-content: center; }
            .header {
                flex-direction: column;
                gap: 0.5rem;
                align-items: stretch;
            }
            .nav-menu {
                justify-content: center;
                gap: 0.3rem 0.8rem;
            }
            .interact-banner {
                flex-direction: column;
                text-align: center;
            }
            .interact-banner p { max-width: 100%; }
        }
        @media (max-width: 500px) {
            body { padding: 0 0.5rem 0.5rem 0.5rem; }
            .hero { padding: 1.5rem 1rem; }
            .hero-badge { font-size: 0.8rem; padding: 0.3rem 0.8rem; }
        }
    
/* ===== extensions v2 ===== */
.nav-menu a[aria-current=page]{opacity:1;border-bottom-color:var(--primary)}
.lang-switch{border:1.5px solid var(--secondary);border-radius:60px;padding:.15rem .8rem;font-weight:600;font-size:.85rem;opacity:1!important}
.logo a{color:inherit;display:inline-flex;align-items:center;gap:.4rem}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:.3rem;font-size:.85rem;opacity:.8}
.crumbs li+li::before{content:"›";margin-right:.3rem;opacity:.5}
.tree-nav a[aria-current=page]{color:var(--primary);font-weight:700;opacity:1}
.panel{background:var(--bg-card);border-radius:var(--radius-sm);padding:1.6rem 1.5rem;box-shadow:var(--shadow)}
.panel h1{font-size:clamp(1.7rem,3.6vw,2.5rem);line-height:1.15;letter-spacing:-.02em;margin-bottom:.8rem}
.panel h2{font-size:1.35rem;margin:1.6rem 0 .6rem;color:var(--secondary)}
.panel p,.panel li{margin-bottom:.6rem}.panel ul,.panel ol{padding-left:1.3rem}
.panel code{background:var(--gray-light);padding:.05rem .4rem;border-radius:6px;font-size:.9em}
.lead{font-size:1.1rem;opacity:.9}
.facts{display:grid;grid-template-columns:max-content 1fr;gap:.4rem 1.2rem;background:var(--gray-light);border-radius:var(--radius-sm);padding:1rem 1.2rem;margin:1rem 0}
.facts dt{font-weight:600;color:var(--secondary)}.facts dd{margin:0}
.chips{display:flex;flex-wrap:wrap;gap:.5rem;list-style:none;padding:0!important}
.chips li{margin:0!important}.chips a{display:inline-block;background:var(--gray-light);padding:.2rem 1rem;border-radius:40px;font-size:.88rem}
.chips a:hover{background:var(--primary);color:#fff}
.pager{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:1.2rem}
.pager a{background:var(--gray-light);padding:.5rem 1.1rem;border-radius:var(--radius-sm)}
.card a.stretch{color:inherit}.card h3 a{color:var(--secondary)}
details.q{border-bottom:1px solid var(--gray-light);padding:.6rem 0}
details.q summary{cursor:pointer;font-weight:600;color:var(--secondary)}
table.arch{width:100%;border-collapse:collapse;font-size:.92rem}
table.arch th,table.arch td{text-align:left;padding:.4rem .6rem;border-bottom:1px solid var(--gray-light)}
.footer{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;opacity:.85}
.footer h2{font-size:.95rem;margin-bottom:.4rem}.footer ul{list-style:none}
.footer .copy{grid-column:1/-1}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}