:root {
            --bg-deep: #000b1d;
            --bg-light: #002b5c;
            --accent: #00d4ff;
            --glass: rgba(255, 255, 255, 0.08);
            --glass-border: rgba(255, 255, 255, 0.15);
        }

        * { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
        
        body { 
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; 
            background: radial-gradient(circle at center, var(--bg-light) 0%, var(--bg-deep) 100%);
            background-attachment: fixed;
            color: #fff;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
			line-height: 1.5em;
        }

        /* HEADER & NAVIGATION */
        header {
            width: 100%;
            background: rgba(0, 0, 0, 0.3);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--glass-border);
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .logo { font-weight: 800; letter-spacing: 2px; font-size: 1.2rem; color: #fff; text-decoration: none; }
        .logo span { color: var(--accent); }

        .nav-links { display: flex; gap: 25px; list-style: none; margin: 0; padding: 0; }
        .nav-links a { text-decoration: none; color: #fff; font-size: 0.9rem; font-weight: 500; transition: color 0.3s; }
        .nav-links a:hover { color: var(--accent); }

        .hamburger { display: none; cursor: pointer; background: none; border: none; padding: 5px; }
        .hamburger span { display: block; width: 25px; height: 3px; background: #fff; margin: 5px 0; transition: 0.4s; }

        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-links {
                position: absolute; top: 100%; right: -100%; width: 100%; height: 100vh;
                background: var(--bg-deep); flex-direction: column; align-items: center;
                padding-top: 50px; transition: 0.5s;
            }
            .nav-links.active { right: 0; }
            .nav-links li { margin-bottom: 30px; }
            .nav-links a { font-size: 1.2rem; }
        }

        /* CONTAINER BILAN */
        .container { 
            width: 95%;
            max-width: 500px; 
            margin: 30px auto; 
            background: var(--glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            padding: 30px 20px; 
            border-radius: 20px; 
            border: 1px solid var(--glass-border);
            box-shadow: 0 20px 40px rgba(0,0,0,0.4);
            flex-shrink: 0;
        }
		
        .container-wide { 
            max-width: 900px;
		}

        .header-tool { text-align: center; margin-bottom: 25px; }
        .header-tool h1 { font-size: 1.5rem; margin: 0; color: #fff; font-weight: 800; line-height: 1.2; }
        .header-tool p { color: var(--accent); font-size: 0.9rem; margin: 5px 0 0; font-weight: 600; }
        
        .progress-container { height: 4px; background: rgba(255,255,255,0.1); border-radius: 10px; margin: 25px 0; }
        .progress-fill { height: 100%; background: var(--accent); width: 20%; transition: width 0.5s ease; box-shadow: 0 0 10px var(--accent); }

        .step { display: none; animation: fadeIn 0.4s ease-out; }
        .step.active { display: block; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

        h3 { font-size: 1.15rem; font-weight: 400; line-height: 1.4; margin-bottom: 25px; text-align: center; color: #f1f5f9; }

        .btn-option { 
            display: block; width: 100%; padding: 18px; margin-bottom: 12px; 
            border: 1px solid var(--glass-border); border-radius: 12px; cursor: pointer; 
            text-align: left; background: rgba(255,255,255,0.04); font-size: 1rem;
            color: #fff; transition: all 0.2s;
        }
        .btn-option:active { background: rgba(0, 212, 255, 0.2); border-color: var(--accent); transform: scale(0.98); }

        #result { display: none; text-align: center; }
        .result-title { font-size: 1.4rem; color: var(--accent); margin-bottom: 15px; font-weight: bold; }
        .result-text { font-size: 1rem; color: #cbd5e0; margin-bottom: 20px; text-align: left; line-height: 1.6; }

        .expert-card { 
            background: rgba(0,0,0,0.25); padding: 20px; border-radius: 14px; 
            border: 1px solid rgba(0, 212, 255, 0.2); text-align: left;
        }
        .expert-info { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
        .expert-info img { width: 50px; height: 50px; border-radius: 50%; border: 1px solid var(--accent); background: #222; }

        .cta-btn { 
            display: block; width: 100%; text-align: center; background: var(--accent); 
            color: #000; padding: 20px; text-decoration: none; border-radius: 12px; 
            font-weight: 800; margin-top: 25px; text-transform: uppercase; font-size: 1.05rem;
            box-shadow: 0 10px 20px rgba(0, 212, 255, 0.2);
        }

        .site-footer { margin-top: auto; width: 100%; text-align: center; padding: 30px 10px; font-size: 0.75rem; color: rgba(255,255,255,0.4); }
        .site-footer a { color: rgba(255,255,255,0.5); text-decoration: none; margin: 0 5px; }
		

		/* Liens visibles sur fond bleu / sombre */
		a {
		  color: #7fdcff;               /* bleu clair lisible */
		  text-decoration: underline;
		}

		a:hover,
		a:focus {
		  color: #00d4ff;               /* accent du site */
		  text-decoration: underline;
		}