* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            padding: 1rem 0;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            color: #667eea;
        }

        .tagline {
            font-size: 0.9rem;
            color: #666;
            margin-top: 0.2rem;
        }

        main {
            padding: 3rem 0;
        }

        .hero {
            text-align: center;
            margin-bottom: 3rem;
            color: white;
        }

        .hero h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }

        .hero p {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }

        .price-highlight {
            background: rgba(255, 255, 255, 0.2);
            padding: 1rem 2rem;
            border-radius: 50px;
            display: inline-block;
            font-weight: bold;
            font-size: 1.1rem;
            backdrop-filter: blur(10px);
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .tests-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .test-card {
            background: white;
            border-radius: 15px;
            padding: 1.5rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        .test-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }

        .video-container {
            width: 100%;
            height: 200px;
            border-radius: 10px;
            overflow: hidden;
            margin-bottom: 1rem;
            background: #f0f0f0;
        }

        .video-container video {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .test-card h3 {
            font-size: 1.3rem;
            margin-bottom: 0.5rem;
            color: #333;
        }

        .test-question {
            font-style: italic;
            color: #667eea;
            margin-bottom: 1rem;
            font-size: 1rem;
        }

        .test-description {
            color: #666;
            margin-bottom: 1.5rem;
            line-height: 1.5;
        }

        .test-button {
            width: 100%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: block;
            text-align: center;
        }

        .test-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
        }

        .price-info {
            font-size: 0.85rem;
            opacity: 0.8;
            margin-top: 0.5rem;
        }

        footer {
            background: rgba(0, 0, 0, 0.8);
            color: white;
            text-align: center;
            padding: 2rem 0;
            margin-top: 3rem;
        }

        .disclaimer {
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem;
            border-radius: 10px;
            margin-top: 2rem;
            font-size: 0.9rem;
            opacity: 0.8;
        }

        /* Responsividade */
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2rem;
            }

            .hero p {
                font-size: 1rem;
            }

            .tests-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .test-card {
                padding: 1rem;
            }

            .video-container {
                height: 180px;
            }

            .container {
                padding: 0 15px;
            }
        }

        @media (max-width: 480px) {
            .hero h1 {
                font-size: 1.7rem;
            }

            .price-highlight {
                padding: 0.8rem 1.5rem;
                font-size: 1rem;
            }

            .video-container {
                height: 160px;
            }
        }


.whatsapp-section {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    margin: 2rem 0;
    text-align: center;
    border: 1px solid #e9ecef;
}

.whatsapp-input-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

.whatsapp-input {
    padding: 0.75rem 1rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    min-width: 250px;
    transition: border-color 0.3s;
}

.whatsapp-input:focus {
    outline: none;
    border-color: #25D366;
}

.continue-button {
    background: #25D366;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

.continue-button:hover {
    background: #128C7E;
}

.error-message {
    color: #dc3545;
    margin: 1rem 0;
    display: none;
}

.success-message {
    color: #198754;
    margin: 1rem 0;
    display: none;
}

/* Responsivo */
@media (max-width: 768px) {
    .whatsapp-input-group {
        flex-direction: column;
    }
    
    .whatsapp-input {
        min-width: 200px;
    }
}