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

        :root {
            --primary: #63a288;
            --secondary-yellow: #e3c64b;
            --secondary-blue: #3a4a80;
            --text-dark: #2c3e50;
            --text-light: #ffffff;
            --bg-light: #f8f9fa;
        }

        body {
            font-family: 'Open Sans', sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
        }

        h1, h2, h3, h4 {
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
        }

        /* Header */
        header {
            background: transparent;
            padding: 1rem 0;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            transition: background 0.3s ease;
        }

        header.scrolled {
            background: rgba(44, 62, 80, 0.95);
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        nav {
            max-width: 100%;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 4rem;
        }

        .logo img {
            height: 50px;
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 600;
            transition: color 0.3s;
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
            padding: 0.5rem;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background: var(--text-light);
            margin: 3px 0;
            transition: all 0.3s;
            border-radius: 2px;
        }

        .menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(8px, 8px);
        }

        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -7px);
        }

        .cta-button {
            background: var(--primary);
            color: var(--text-light);
            padding: 0.8rem 1.8rem;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
            display: inline-block;
        }

        .cta-button:hover {
            background: var(--secondary-blue);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary-blue) 100%);
            color: var(--text-light);
            padding: 150px 4rem 100px;
            text-align: center;
            margin-top: 0;
        }

        .hero h1 {
            font-size: 3rem;
            margin-bottom: 1.5rem;
            max-width: 1000px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.2;
        }

        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 2.5rem;
            font-weight: 300;
        }

        /* Section générique */
        section {
            padding: 80px 4rem;
            max-width: 100%;
            margin: 0 auto;
        }

        .section-title {
            font-size: 2.5rem;
            text-align: center;
            margin-bottom: 3rem;
            color: var(--secondary-blue);
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
        }

        /* Pitch entreprise */
        .pitch {
            background: linear-gradient(135deg, #f5f7f6 0%, #e8ede9 50%, #f0f4f1 100%);
            position: relative;
            overflow: hidden;
        }

        .pitch::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(99, 162, 136, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }

        .pitch::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(58, 74, 128, 0.06) 0%, transparent 70%);
            border-radius: 50%;
        }

        .pitch-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: start;
            position: relative;
            z-index: 1;
        }

        .pitch-left {
            padding-right: 2rem;
        }

        .pitch-badge {
            display: inline-block;
            background: var(--secondary-yellow);
            color: var(--text-dark);
            padding: 0.6rem 1.5rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 2rem;
        }
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 2rem;
            color: var(--text-dark);
        }

        .pitch-left h2 {
            font-size: 3rem;
            line-height: 1.2;
            margin-bottom: 2.5rem;
            color: var(--text-dark);
        }

        .pitch-left p {
            font-size: 1.15rem;
            line-height: 1.8;
            color: #5a6c7d;
            margin-bottom: 2.5rem;
        }

        .pitch-buttons {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
            margin-top: 3rem;
        }

        .pitch-button-primary {
            background: var(--primary);
            color: white;
            padding: 1rem 2.5rem;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
            display: inline-block;
            font-size: 1rem;
        }

        .pitch-button-primary:hover {
            background: var(--secondary-blue);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(99, 162, 136, 0.3);
        }

        .pitch-button-secondary {
            background: transparent;
            color: var(--primary);
            padding: 1rem 2.5rem;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            border: 2px solid var(--primary);
            cursor: pointer;
            display: inline-block;
            font-size: 1rem;
        }

        .pitch-button-secondary:hover {
            background: var(--primary);
            color: white;
        }

        .pitch-right {
            background: white;
            padding: 3rem;
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
        }

        .pitch-right h3 {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            color: var(--text-dark);
        }

        .pitch-highlight {
            color: var(--primary);
            font-weight: 600;
        }

        .pitch-right p {
            font-size: 1.05rem;
            line-height: 1.8;
            color: #5a6c7d;
            margin-bottom: 1.5rem;
        }

        .pitch-list {
            list-style: none;
            padding: 0;
            margin: 1.5rem 0;
        }

        .pitch-list li {
            padding-left: 1.8rem;
            margin-bottom: 1rem;
            position: relative;
            font-size: 1.05rem;
            line-height: 1.6;
            color: #5a6c7d;
        }

        .pitch-list li::before {
            content: '•';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
            font-size: 1.5rem;
        }

        @media (max-width: 1024px) {
            .pitch-container {
                grid-template-columns: 1fr;
                gap: 3rem;
            }

            .pitch-left {
                padding-right: 0;
            }

            .pitch-left h2 {
                font-size: 2.2rem;
            }
        }

        /* Système de filtration */
        .filtration {
            background: white;
        }

        .filtration-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .filtration-card {
            background: linear-gradient(135deg, var(--primary) 0%, #4a7d6a 100%);
            color: white;
            padding: 2.5rem;
            border-radius: 15px;
            border: none;
            transition: transform 0.3s, box-shadow 0.3s;
            position: relative;
            overflow: hidden;
        }

        .filtration-card::before {
            content: attr(data-number);
            position: absolute;
            top: 1.5rem;
            right: 1.5rem;
            font-size: 2.5rem;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.2);
            font-family: 'Montserrat', sans-serif;
        }

        .filtration-card:nth-child(even) {
            background: linear-gradient(135deg, #7a9d89 0%, #5d8570 100%);
        }

        .filtration-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 40px rgba(99, 162, 136, 0.4);
        }

        .filtration-icon {
            width: 50px;
            height: 50px;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .filtration-icon svg {
            width: 100%;
            height: 100%;
            stroke: white;
            fill: none;
            stroke-width: 2;
        }

        .filtration-card h3 {
            color: white;
            margin-bottom: 1rem;
            font-size: 1.4rem;
            font-weight: 600;
        }

        .filtration-card p {
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.95);
        }

        /* Bénéfices */
        .benefits {
            background: linear-gradient(120deg, color-mix(in srgb, rgb(99, 162, 136) 18%, white), rgb(255, 255, 255));
            position: relative;
            overflow: hidden;
        }

        .benefits .section-title,
        .benefits-grid {
            position: relative;
            z-index: 1;
        }

        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2.5rem;
            margin-top: 3rem;
        }

        .benefit-card {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
            transition: all 0.3s;
        }

        .benefit-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(99, 162, 136, 0.2);
        }

        .benefit-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
        }

        .benefit-card h3 {
            color: var(--secondary-blue);
            margin-bottom: 1rem;
            font-size: 1.4rem;
        }

        /* Galerie */
        .gallery {
            background: white;
            text-align: center;
        }

        .gallery p {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .gallery-carousel {
            position: relative;
            max-width: 100%;
            margin: 0 auto;
            overflow: hidden;
            border-radius: 15px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.15);
        }

        .gallery-slides {
            display: flex;
            transition: transform 0.5s ease;
        }

        .gallery-slide {
            min-width: 100%;
            height: 600px;
        }

        .gallery-slide img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .gallery-nav {
            position: absolute;
            top: 50%;
            width: 100%;
            display: flex;
            justify-content: space-between;
            transform: translateY(-50%);
            padding: 0 1rem;
        }

        .gallery-btn {
            background: rgba(255,255,255,0.9);
            border: none;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            cursor: pointer;
            font-size: 1.5rem;
            transition: all 0.3s;
        }

        .gallery-btn:hover {
            background: var(--primary);
            color: white;
        }

        .gallery-dots {
            text-align: center;
            margin-top: 1.5rem;
        }

        .dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #ddd;
            margin: 0 5px;
            cursor: pointer;
            transition: all 0.3s;
        }

        .dot.active {
            background: var(--primary);
            width: 30px;
            border-radius: 6px;
        }

        /* Témoignages */
        .testimonials {
            background: var(--bg-light);
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .testimonial-card {
            background: linear-gradient(135deg, var(--primary) 0%, #4a7d6a 100%);
            color: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            position: relative;
        }

        .testimonial-card:nth-child(even) {
            background: linear-gradient(135deg, #7a9d89 0%, #5d8570 100%);
        }

        .testimonial-card::before {
            content: '"';
            font-size: 4rem;
            color: rgba(255, 255, 255, 0.3);
            opacity: 1;
            position: absolute;
            top: -10px;
            left: 20px;
            font-family: Georgia, serif;
        }

        .testimonial-text {
            font-style: italic;
            margin-bottom: 1rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.95);
        }

        .testimonial-author {
            font-weight: 600;
            color: white;
        }

        .stars {
            color: var(--secondary-yellow);
            margin-bottom: 1rem;
        }

        /* FAQ */
        .faq {
            background: white;-
        }

        .faq p {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .faq-list {
            max-width: 1200px;
            margin: 0 auto;
        }

        .faq-item {
            margin-bottom: 1.5rem;
            border-radius: 8px;
            overflow: hidden;
        }

        .faq-question {
            background: #63a2884f;
            padding: 1.5rem;
            cursor: pointer;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background 0.3s;
        }

        .faq-question:hover {
            background: var(--primary);
            color: white;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: bold;
        }

        .faq-question.active::after {
            content: '−';
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 1.5rem;
            background: white;
        }

        .faq-answer.active {
            max-height: 300px;
            padding: 1.5rem;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--primary) 100%);
            color: white;
            text-align: center;
            padding: 80px 4rem;
        }

        .cta-section h2 {
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
        }

        .cta-section p {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .cta-button {
            background: var(--secondary-yellow);
            color: var(--text-dark);
            font-size: 1.2rem;
            padding: 1rem 3rem;
        }

        .cta-section .cta-button:hover {
            background: white;
        }

        /* Footer */
        footer {
            background: var(--text-dark);
            color: var(--text-light);
            padding: 3rem 4rem 1rem;
        }

        .footer-content {
            max-width: 100%;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }

        .footer-section h3 {
            color: var(--primary);
            margin-bottom: 1rem;
        }

        .footer-section ul {
            list-style: none;
        }

        .footer-section ul li {
            margin-bottom: 0.5rem;
        }

        .footer-section a {
            color: var(--text-light);
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-section a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
        }

        .footer-bottom a {
            color: var(--text-light);
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* Responsive */
        @media (max-width: 1024px) and (min-width: 769px) {
            .filtration-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .benefits-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .filtration-grid {
                grid-template-columns: 1fr;
            }

            .benefits-grid {
                grid-template-columns: 1fr;
            }
            nav {
                padding: 0 2rem;
            }

            section {
                padding: 60px 2rem;
            }

            .hero {
                padding: 120px 2rem 80px;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .hero p {
                font-size: 1.1rem;
            }

            .section-title {
                font-size: 2rem;
            }

            footer {
                padding: 3rem 2rem 1rem;
            }

            .cta-section {
                padding: 60px 2rem;
            }

            .testimonials-grid {
                grid-template-columns: 1fr;
            }

            .menu-toggle {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: 70px;
                right: -100%;
                width: 100%;
                height: calc(100vh - 70px);
                background: var(--text-dark);
                flex-direction: column;
                justify-content: flex-start;
                padding: 2rem;
                gap: 0;
                transition: right 0.3s ease;
                z-index: 999;
            }

            .nav-links.active {
                right: 0;
            }

            .nav-links li {
                margin-bottom: 1.5rem;
                opacity: 0;
                transform: translateX(20px);
                animation: fadeInSlide 0.3s forwards;
            }

            .nav-links.active li:nth-child(1) { animation-delay: 0.1s; }
            .nav-links.active li:nth-child(2) { animation-delay: 0.2s; }
            .nav-links.active li:nth-child(3) { animation-delay: 0.3s; }
            .nav-links.active li:nth-child(4) { animation-delay: 0.4s; }
            .nav-links.active li:nth-child(5) { animation-delay: 0.5s; }

            .nav-links a {
                font-size: 1.3rem;
                display: block;
                padding: 0.5rem 0;
            }

            nav .cta-button {
                display: none;
            }

            .gallery-slide {
                height: 400px;
            }
        }

        @keyframes fadeInSlide {
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        /* Badge de confiance */
        .trust-badge {
            display: inline-block;
            background: var(--secondary-yellow);
            color: var(--text-dark);
            padding: 1rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            margin-top: 2rem;
            box-shadow: 0 5px 15px rgba(227, 198, 75, 0.3);
        }

        /* Modal */
        .modal {
            display: none;
            position: fixed;
            z-index: 2000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            animation: fadeIn 0.3s;
        }

        .modal.active {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .modal-content {
            background: white;
            padding: 3rem;
            border-radius: 15px;
            max-width: 700px;
            width: 90%;
            max-height: 80vh;
            overflow-y: auto;
            position: relative;
            animation: slideUp 0.3s;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
        }

        .modal-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary-blue) 100%);
            color: white;
            padding: 2rem;
            margin: -3rem -3rem 2rem -3rem;
            border-radius: 15px 15px 0 0;
        }

        .modal-header h2 {
            margin: 0;
            font-size: 2rem;
        }

        .modal-header .modal-title {
            margin: 0;
            font-size: 2rem;
            font-weight: 700;
            font-family: 'Montserrat', sans-serif;
        }

        .modal-close {
            position: absolute;
            top: 1.5rem;
            right: 1.5rem;
            background: rgba(255, 255, 255, 0.2);
            border: none;
            color: white;
            font-size: 2rem;
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s;
            line-height: 1;
        }

        .modal-close:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: rotate(90deg);
        }

        .modal-body {
            font-size: 1.1rem;
            line-height: 1.8;
            color: var(--text-dark);
        }

        .modal-body p {
            margin-bottom: 1.5rem;
        }

        .modal-body strong {
            color: var(--primary);
        }

        .patent-link {
            color: var(--primary);
            text-decoration: underline;
            cursor: pointer;
            font-weight: 600;
            transition: color 0.3s;
        }

        .patent-link:hover {
            color: var(--secondary-blue);
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }