:root {
            --primary-dark: #4A00E0;
            --primary-light: #8E2DE2;
            --accent-color: #FF6B6B;
            --text-dark: #1a1730;
            --bg-light: #ffffff;
            --bg-grey: #f5f3ff;
            --plan-decouverte: #6c757d;
            --plan-unique: #e8590c;
            --plan-essentiel: #4A00E0;
            --plan-studio: #0a8043;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: 'Montserrat', sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background: var(--bg-light);
        }
        a { text-decoration: none; }
        .container { max-width: 1140px; margin: 0 auto; padding: 0 1.5rem; }

        /* Header */
        .site-header {
            display: flex; align-items: center; justify-content: space-between;
            padding: 1.1rem 1.5rem; box-shadow: 0 2px 10px rgba(0,0,0,0.06);
        }
        .site-header .logo-link { display: block; height: 46px; }
        .site-header .logo-link img { height: 100%; width: auto; }
        .site-header nav { display: flex; align-items: center; gap: 1.4rem; }
        .site-header nav a { font-weight: 500; font-size: 0.95rem; color: var(--text-dark); }
        .site-header nav a:hover { color: var(--primary-dark); }
        .site-header nav .btn-signup {
            background: var(--accent-color); color: #fff; padding: 0.55rem 1.3rem;
            border-radius: 6px; font-weight: 600;
        }

        /* Breadcrumb */
        .breadcrumb { font-size: 0.85rem; color: #6c757d; padding: 1.5rem 0 0; }
        .breadcrumb a { color: #6c757d; }
        .breadcrumb a:hover { color: var(--primary-dark); }

        /* Intro */
        .page-intro { text-align: center; padding: 2.5rem 0 1rem; }
        .page-intro h1 { font-size: 2.4rem; font-weight: 700; margin-bottom: 1rem; line-height: 1.25; font-family: 'Playfair Display', serif; }
        .page-intro p { max-width: 680px; margin: 0 auto; color: #4b4762; font-size: 1.05rem; }

        /* Legend / filtre par offre */
        .plan-legend {
            display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem;
            padding: 1.8rem 0 0.5rem;
        }
        .plan-legend-hint { width: 100%; text-align: center; font-size: 0.85rem; color: #8b87a0; margin-bottom: 0.4rem; }
        .plan-filter-btn {
            border: 1.5px solid #e3ddf7; background: #fff; border-radius: 6px;
            padding: 0.45rem 1.1rem; font-size: 0.85rem; font-weight: 600; cursor: pointer;
            display: inline-flex; align-items: center; gap: 0.5rem; color: var(--text-dark);
            transition: border-color .15s, background .15s, color .15s;
        }
        .plan-filter-btn .dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }
        .plan-filter-btn[data-plan="decouverte"] .dot { background: var(--plan-decouverte); }
        .plan-filter-btn[data-plan="unique"] .dot { background: var(--plan-unique); }
        .plan-filter-btn[data-plan="essentiel"] .dot { background: var(--plan-essentiel); }
        .plan-filter-btn[data-plan="studio"] .dot { background: var(--plan-studio); }
        .plan-filter-btn:hover { border-color: var(--primary-light); }
        .plan-filter-btn.active { background: var(--text-dark); border-color: var(--text-dark); color: #fff; }
        .plan-filter-btn.active .dot { box-shadow: 0 0 0 2px rgba(255,255,255,0.5); }

        /* Groupes de fonctionnalités */
        .feat-group { padding: 3rem 0 0.5rem; }
        .feat-group h2 {
            font-size: 1.5rem; font-weight: 700; margin-bottom: 1.5rem;
            padding-bottom: 0.6rem; border-bottom: 2px solid var(--bg-grey);
            font-family: 'Playfair Display', serif;
        }
        .feat-grid {
            display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem;
        }

        .feat-card {
            border: 1.5px solid #ede8ff; border-radius: 14px; background: #fff;
            transition: box-shadow .2s, border-color .2s;
        }
        .feat-card:hover, .feat-card:focus-within { border-color: var(--primary-light); box-shadow: 0 10px 30px rgba(74,0,224,0.1); }
        .feat-card.is-dimmed { opacity: 0.35; }

        .feat-toggle {
            width: 100%; display: flex; align-items: center; gap: 0.8rem;
            background: none; border: none; text-align: left; cursor: pointer;
            padding: 1.1rem 1.2rem; font-family: inherit; color: var(--text-dark);
        }
        .feat-icon {
            flex-shrink: 0; width: 40px; height: 40px; border-radius: 11px;
            background: var(--bg-grey); color: var(--primary-dark);
            display: flex; align-items: center; justify-content: center;
        }
        .feat-icon svg { width: 21px; height: 21px; }
        .feat-title { flex: 1; font-weight: 600; font-size: 1rem; }
        .feat-chevron {
            flex-shrink: 0; width: 22px; height: 22px; border-radius: 50%;
            background: var(--bg-grey); color: var(--primary-dark); font-size: 1rem;
            display: flex; align-items: center; justify-content: center;
            transition: transform .2s;
        }
        .feat-card.is-open .feat-chevron, .feat-card:hover .feat-chevron, .feat-card:focus-within .feat-chevron { transform: rotate(45deg); }

        .feat-detail {
            max-height: 0; opacity: 0; overflow: hidden;
            transition: max-height .3s ease, opacity .25s ease, padding .3s ease;
            padding: 0 1.2rem;
        }
        .feat-card:hover .feat-detail,
        .feat-card:focus-within .feat-detail,
        .feat-card.is-open .feat-detail {
            max-height: 320px; opacity: 1; padding: 0 1.2rem 1.2rem;
        }
        .feat-detail p { font-size: 0.92rem; color: #4b4762; margin-bottom: 0.8rem; }
        .feat-note { font-size: 0.82rem; color: #a6621c; background: #fff6ea; border-radius: 8px; padding: 0.5rem 0.7rem; margin-bottom: 0.8rem; }

        .feat-plans { display: flex; flex-wrap: wrap; gap: 0.4rem; }
        .plan-chip {
            font-size: 0.72rem; font-weight: 700; padding: 0.3rem 0.7rem; border-radius: 6px;
            color: #fff; white-space: nowrap;
        }
        .plan-chip.plan-decouverte { background: var(--plan-decouverte); }
        .plan-chip.plan-unique { background: var(--plan-unique); }
        .plan-chip.plan-essentiel { background: var(--plan-essentiel); }
        .plan-chip.plan-studio { background: var(--plan-studio); }

        /* FAQ */
        .faq-section { padding: 3rem 0 1rem; }
        .faq-section h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 0.4rem; text-align: center; font-family: 'Playfair Display', serif; }
        .faq-section .page-meta { text-align: center; font-size: 0.85rem; color: #8b87a0; margin-bottom: 2rem; }
        .faq-item { margin-bottom: 1.5rem; padding-bottom: 1.5rem; border-bottom: 1px solid #ede8ff; }
        .faq-item:last-child { border-bottom: none; }
        .faq-item h3 { font-size: 1.05rem; color: var(--text-dark); margin-bottom: 0.5rem; }
        .faq-item p { font-size: 0.95rem; color: #4b4762; }

        /* CTA finale */
        .feat-cta {
            text-align: center; margin: 4rem 0 3rem; padding: 3rem 1.5rem;
            background: linear-gradient(135deg, rgba(58,0,180,0.95) 0%, rgba(142,45,226,0.9) 100%);
            border-radius: 20px; color: #fff;
        }
        .feat-cta h2 { font-size: 1.8rem; margin-bottom: 0.8rem; font-family: 'Playfair Display', serif; }
        .feat-cta p { opacity: 0.9; margin-bottom: 1.6rem; }
        .feat-cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
        .btn { display: inline-block; padding: 0.8rem 2rem; border-radius: 6px; font-weight: 600; transition: transform .2s; }
        .btn-primary { background: var(--accent-color); color: #fff; }
        .btn-ghost { background: rgba(255,255,255,0.12); border: 1.5px solid rgba(255,255,255,0.5); color: #fff; }
        .btn:hover { transform: translateY(-3px); }

        footer.site-footer { text-align: center; padding: 2rem 1.5rem; font-size: 0.85rem; color: #8b87a0; }
        footer.site-footer a { color: var(--primary-dark); font-weight: 600; }

        @media (max-width: 768px) {
            .feat-grid { grid-template-columns: 1fr; }
            .page-intro h1 { font-size: 1.8rem; }
            .site-header nav a:not(.btn-signup) { display: none; }
        }