   
  <style>
   :root{ --header-h:72px; --container:1200px; --secondary-gray:#444; --dark-gray:#0f172a; }
.hero h1{ color:#fff; } /* si fond sombre */
</style>
   
  <style>
   *,*::before,*::after{ box-sizing:border-box }
html{ scroll-behavior:smooth }
body{
  margin:0;
  font-family:Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  color:var(--secondary-gray);
  background:#fff;
  line-height:1.6;
  font-size:16px;
  overflow-x:hidden;
  padding-top:var(--header-h); /* laisse la place au header sticky */
}
img{ max-width:100%; height:auto; display:block }
a{ color:inherit; text-decoration:none }
button{ font:inherit }

/* Conteneur */
.container{ max-width:var(--container); margin:0 auto; padding:0 24px }

/* Titres */
h1,h2,h3,h4,h5,h6{
  font-family:'Playfair Display', Georgia, serif;
  color:var(--dark-gray);
  line-height:1.2;
  margin:0 0 .5em;
}
h1{ font-size:clamp(2.2rem,5vw,3.6rem); font-weight:700 }
h2{ font-size:clamp(1.8rem,4vw,2.6rem); font-weight:600 }
h3{ font-size:clamp(1.4rem,3vw,2rem); font-weight:600 }

        /* Container principal du CTA flottant */
        .floating-cta {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 1000;
            transform: translateY(0);
            transition: transform 0.3s ease;
        }

        /* Bouton principal */
        .floating-cta-button {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 24px;
            background: linear-gradient(135deg, #B8956A 0%, #8B7355 70%);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
            font-weight: 600;
            font-size: 16px;
            position: relative;
            overflow: hidden;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            min-width: 180px;
            justify-content: center;
        }

        /* Animation de pulsation subtile */
        .floating-cta-button::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50px;
            transform: translate(-50%, -50%) scale(0);
            animation: pulse-ring 2s infinite;
        }

        @keyframes pulse-ring {
            0% {
                transform: translate(-50%, -50%) scale(0.8);
                opacity: 1;
            }
            100% {
                transform: translate(-50%, -50%) scale(1.2);
                opacity: 0;
            }
        }

        /* Effet hover */
        .floating-cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(37, 99, 235, 0.5);
            background: linear-gradient(135deg, #8B7355 0%, #8B7355 100%);
        }

        /* Icône téléphone */
        .floating-cta-button .fa-phone {
            font-size: 18px;
            animation: phone-shake 3s infinite;
            transform-origin: center;
        }

        @keyframes phone-shake {
            0%, 90%, 100% {
                transform: rotate(0deg);
            }
            5%, 15%, 25% {
                transform: rotate(-5deg);
            }
            10%, 20% {
                transform: rotate(5deg);
            }
        }

        /* Texte du bouton */
        .floating-cta-button span {
            position: relative;
            z-index: 2;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        /* Badge de disponibilité */
        .status-badge {
            position: absolute;
            top: -8px;
            right: -8px;
            width: 20px;
            height: 20px;
            background: #10b981;
            border: 3px solid white;
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% {
                transform: scale(1);
                opacity: 1;
            }
            50% {
                transform: scale(1.1);
                opacity: 0.8;
            }
        }

        /* Tooltip au hover */
        .floating-cta-button::after {
            content: 'Devis gratuit • Réponse rapide';
            position: absolute;
            bottom: 110%;
            right: 50%;
            transform: translateX(50%);
            background: rgba(0, 0, 0, 0.9);
            color: white;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            pointer-events: none;
        }

        .floating-cta-button:hover::after {
            opacity: 1;
            visibility: visible;
            bottom: 120%;
        }

        /* Triangle du tooltip */
        .floating-cta-button:hover::before {
            animation: none; /* Stop la pulsation pendant le hover */
        }

        /* Version responsive */
        @media (max-width: 768px) {
            .floating-cta {
                bottom: 15px;
                right: 15px;
            }

            .floating-cta-button {
                padding: 14px 20px;
                font-size: 15px;
                min-width: 160px;
            }

            .floating-cta-button .fa-phone {
                font-size: 16px;
            }

            .floating-cta-button span {
                font-size: 15px;
            }
        }

        /* Animation d'entrée */
        .floating-cta {
            animation: slideInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
        }

        @keyframes slideInUp {
            from {
                transform: translateY(100px);
                opacity: 0;
            }
            to {
                transform: translateY(0);
                opacity: 1;
            }
        }

        /* Effet de focus pour l'accessibilité */
        .floating-cta-button:focus {
            outline: none;
            box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4), 0 0 0 3px rgba(37, 99, 235, 0.3);
        }

        /* Version alternative avec numéro visible */
        .floating-cta-extended {
            flex-direction: column;
            gap: 4px;
            padding: 12px 20px;
        }

        .floating-cta-extended .phone-number {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 1px;
        }

        .floating-cta-extended .call-text {
            font-size: 12px;
            opacity: 0.9;
            font-weight: 500;
        }

        /* Démonstration - contenu de la page */
        .demo-content {
            padding: 40px 20px;
            max-width: 800px;
            margin: 0 auto;
            line-height: 1.6;
        }
   
    
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    
    /* === NAVIGATION === */
    .main-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 9999;
      background: linear-gradient(135deg, #C9A86A 0%, #A6825D 100%);
      box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    }
    
    .main-nav .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 72px;
    }
    
    .logo {
      color: #fff;
      font-weight: 700;
      font-size: 1.2rem;
      text-decoration: none;
      z-index: 10001;
    }
    
    .logo .wood-texture {
      color: #f59e0b;
    }
    
    /* Navigation Links */
    .nav-links {
      display: flex;
      list-style: none;
      gap: 8px;
    }
    
    .nav-links > li {
      position: relative;
    }
    
    .nav-links a {
      color: #fff;
      text-decoration: none;
      padding: 10px 16px;
      border-radius: 8px;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 6px;
      transition: background 0.2s ease;
    }
    
    .nav-links > li > a:hover {
      background: linear-gradient(135deg, #C9A86A 0%, #A6825D 100%);
    }
    
    /* Flèche sous-menu */
    .has-submenu > a::after {
      content: '';
      width: 0;
      height: 0;
      border-left: 4px solid transparent;
      border-right: 4px solid transparent;
      border-top: 5px solid #fff;
      margin-left: 4px;
      transition: transform 0.3s ease;
    }
    
    .has-submenu:hover > a::after {
      transform: rotate(180deg);
    }
    
    /* SOUS-MENU DESKTOP - IMPORTANT */
    .submenu {
      position: absolute;
      top: 100%;
      left: 0;
      background: #fff;
      min-width: 220px;
      border-radius: 8px;
      box-shadow: 0 4px 20px rgba(0,0,0,0.15);
      list-style: none;
      padding: 0;
      margin-top: 8px;
      z-index: 1000;
      /* MASQUÉ PAR DÉFAUT */
      opacity: 0;
      visibility: hidden;
      transform: translateY(-10px);
      transition: all 0.3s ease;
    }
    
    /* VISIBLE AU SURVOL */
    .has-submenu:hover .submenu {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }
    
    .submenu li {
      border-bottom: 1px solid #f0f0f0;
    }
    
    .submenu li:last-child {
      border-bottom: none;
    }
    
    .submenu a {
      color: #333;
      padding: 12px 20px;
      display: block;
      font-weight: 500;
      transition: all 0.2s ease;
      border-radius: 0;
    }
    
    .submenu a:hover {
      background: #f8f9fa;
      color: #8B7355;
      padding-left: 24px;
    }
    
    .submenu li:first-child a {
      border-radius: 8px 8px 0 0;
    }
    
    .submenu li:last-child a {
      border-radius: 0 0 8px 8px;
    }
    
    /* Bouton Mobile */
    .mobile-menu-btn {
      display: none;
      background: none;
      border: 0;
      cursor: pointer;
      padding: 8px;
      flex-direction: column;
      justify-content: center;
      width: 40px;
      height: 40px;
      z-index: 10001;
    }
    
    .mobile-menu-btn span {
      display: block;
      width: 26px;
      height: 3px;
      background: #fff;
      margin: 3px 0;
      border-radius: 2px;
      transition: all 0.3s ease;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
      transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
      opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
      transform: rotate(-45deg) translate(7px, -6px);
    }
    
    /* === MOBILE === */
    @media (max-width: 768px) {
      .mobile-menu-btn {
        display: flex;
      }
      
      .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, #B8956A 0%, #8B7355 100%);
        flex-direction: column;
        gap: 0;
        padding: 16px;
        height: calc(100vh - 72px);
        overflow-y: auto;
        transform: translateX(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
      }
      
      .nav-links.open {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
      }
      
      .nav-links > li {
        width: 100%;
        border-bottom: 1px solid rgba(255,255,255,0.1);
      }
      
      .nav-links > li:last-child {
        border-bottom: none;
      }
      
      .nav-links > li > a {
        width: 100%;
        padding: 16px 12px;
        justify-content: space-between;
        border-radius: 0;
      }
      
      /* Sous-menu mobile */
      .submenu {
        position: static;
        background: rgba(255,255,255,0.1);
        opacity: 1;
        visibility: visible;
        transform: none;
        margin: 0;
        box-shadow: none;
        border-radius: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
      }
      
      .has-submenu.open .submenu {
        max-height: 500px;
      }
      
      .submenu a {
        color: #fff;
        padding: 12px 12px 12px 32px;
        background: transparent;
      }
      
      .submenu a:hover {
        background: rgba(255,255,255,0.1);
        color: #fff;
        padding-left: 36px;
      }
      
      .has-submenu > a::after {
        transition: transform 0.3s ease;
      }
      
      .has-submenu.open > a::after {
        transform: rotate(180deg);
      }
      
      body.menu-open {
        overflow: hidden;
      }
    }
    
    /* === CONTENU === */
    .hero {
      background: linear-gradient(135deg, #B8956A 0%, #8B7355 100%);
      color: white;
      padding: 100px 0;
      text-align: center;
    }
    
.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
    }
    
  </style>