:root{--color-bg-primary: #0a0a0f;--color-bg-secondary: #12121a;--color-bg-tertiary: #1a1a24;--color-text-primary: #f5f5f7;--color-text-secondary: #a1a1aa;--color-text-muted: #71717a;--color-accent: #8b5cf6;--color-accent-hover: #a78bfa;--color-border: #27272a;--color-border-light: #3f3f46;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;line-height:1.7;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--spacing-xs: .375rem;--spacing-sm: .75rem;--spacing-md: 1.25rem;--spacing-lg: 2.5rem;--spacing-xl: 3.5rem;--spacing-2xl: 5rem;--max-width: 1100px;--transition-slow: .4s ease;--transition-medium: .25s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background-color:var(--color-bg-primary);color:var(--color-text-primary);min-height:100vh}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-weight:300;letter-spacing:-.02em;line-height:1.3;color:var(--color-text-primary)}h1{font-size:clamp(2rem,5vw,3.5rem)}h2{font-size:clamp(1.5rem,3vw,2.25rem);margin-bottom:var(--spacing-sm)}h3{font-size:clamp(1.125rem,2vw,1.5rem)}p{color:var(--color-text-secondary);max-width:65ch}a{color:var(--color-accent);text-decoration:none;transition:color var(--transition-medium)}a:hover{color:var(--color-accent-hover)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:1rem 2rem;font-size:1rem;font-weight:400;font-family:inherit;letter-spacing:.02em;border:1px solid var(--color-border-light);border-radius:4px;background:transparent;color:var(--color-text-primary);cursor:pointer;transition:all var(--transition-medium)}.btn:hover{background:var(--color-bg-tertiary);border-color:var(--color-accent)}.btn-primary{background:var(--color-accent);border-color:var(--color-accent);color:#fff}.btn-primary:hover{background:var(--color-accent-hover);border-color:var(--color-accent-hover)}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 var(--spacing-md)}section{padding:var(--spacing-xl) 0}@media(max-width:768px){section{padding:var(--spacing-lg) 0}}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .6s ease forwards}::selection{background:var(--color-accent);color:#fff}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--color-bg-secondary)}::-webkit-scrollbar-thumb{background:var(--color-border-light);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}.header{position:fixed;top:0;left:0;right:0;z-index:100;padding:var(--spacing-sm) 0;background:#0a0a0fcc;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color var(--transition-medium)}.header.scrolled{border-bottom-color:var(--color-border)}.header .container{display:flex;justify-content:space-between;align-items:center}.logo-link{font-size:1.125rem;font-weight:300;letter-spacing:.05em;color:var(--color-text-primary);text-transform:uppercase}.logo-link:hover{color:var(--color-accent)}.header-nav{display:flex;align-items:center;gap:var(--spacing-md)}.nav-link{font-size:.875rem;font-weight:400;color:var(--color-text-secondary);transition:color var(--transition-medium)}.nav-link:hover{color:var(--color-text-primary)}.footer{margin-top:auto;padding:var(--spacing-lg) 0 var(--spacing-md);background:var(--color-bg-secondary);border-top:1px solid var(--color-border)}.footer-content{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-md)}.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--spacing-sm) var(--spacing-md)}.footer-links a{font-size:.875rem;color:var(--color-text-muted)}.footer-links a:hover{color:var(--color-text-secondary)}.footer-copyright{font-size:.8125rem;color:var(--color-text-muted)}.hero{min-height:auto;display:flex;align-items:center;justify-content:center;text-align:center;padding:var(--spacing-2xl) 0 var(--spacing-xl);position:relative;overflow:hidden}.hero:before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:600px;height:600px;background:radial-gradient(circle,var(--color-accent) 0%,transparent 70%);opacity:.05;pointer-events:none}.hero-content{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;text-align:center}.hero h1{margin-bottom:var(--spacing-sm);opacity:0;animation:fadeIn .8s ease .2s forwards}.hero-subtitle{font-size:clamp(1rem,2vw,1.25rem);color:var(--color-text-secondary);font-weight:300;letter-spacing:.02em;opacity:0;animation:fadeIn .8s ease .4s forwards;margin:0 auto;max-width:100%}.hero-buttons{display:flex;gap:var(--spacing-sm);margin-top:var(--spacing-md);opacity:0;animation:fadeIn .8s ease .6s forwards}.video-modal-overlay{position:fixed;inset:0;z-index:1200;background:#0a0a0fe0;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;padding:var(--spacing-md)}.video-modal{width:min(100%,980px);background:var(--color-bg-secondary);border:1px solid var(--color-border-light);border-radius:8px;position:relative;padding:var(--spacing-md)}.video-modal-close{position:absolute;top:.5rem;right:.5rem;width:2rem;height:2rem;border:1px solid var(--color-border-light);border-radius:999px;background:var(--color-bg-primary);color:var(--color-text-primary);cursor:pointer;font-size:1.25rem;line-height:1}.video-embed-wrapper{position:relative;width:100%;padding-top:56.25%;overflow:hidden;border-radius:6px;background:#000}.video-embed-wrapper iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.video-modal-actions{margin-top:var(--spacing-sm);display:flex;justify-content:center}.youtube-subscribe-btn{background:red;border-color:red;color:#fff}.youtube-subscribe-btn:hover{background:#c00;border-color:#c00;color:#fff}.inline-video-player{position:absolute;inset:0;width:100%;height:100%;border:0;background:#000}.mega-demo-section{padding-top:0}.mega-demo-player{max-width:900px;margin:0 auto}.mega-demo-link{margin:var(--spacing-sm) auto 0;text-align:center}@media(max-width:480px){.hero-buttons{flex-direction:column;width:100%}.hero-buttons .btn{width:100%}.video-modal{padding:.75rem}}.spiral-container{display:flex;align-items:center;justify-content:center;width:100%;max-width:400px;margin:0 auto var(--spacing-md);overflow:hidden}.spiral-image{width:100%;height:auto;display:block;transform-origin:center center;animation:rotate 10s linear infinite}@keyframes rotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media(max-width:768px){.spiral-container{max-width:280px}}.section-header{text-align:center;margin-bottom:var(--spacing-md)}.section-header p{margin:0 auto}.concept-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-md)}.concept-card{padding:var(--spacing-md);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:8px;transition:border-color var(--transition-medium)}.concept-card:hover{border-color:var(--color-border-light)}.concept-card h3{margin-bottom:var(--spacing-sm);color:var(--color-text-primary)}.dolby-section{background:var(--color-bg-secondary)}.dolby-content{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-lg);align-items:center}@media(max-width:768px){.dolby-content{grid-template-columns:1fr}}.dolby-visual{display:flex;justify-content:center;align-items:center}.sound-waves{display:flex;justify-content:center;align-items:center;gap:8px;height:150px}.wave{width:4px;background:var(--color-accent);border-radius:2px;animation:wave 1.5s ease-in-out infinite}.wave:nth-child(1){height:20%;animation-delay:0s}.wave:nth-child(2){height:40%;animation-delay:.1s}.wave:nth-child(3){height:60%;animation-delay:.2s}.wave:nth-child(4){height:80%;animation-delay:.3s}.wave:nth-child(5){height:100%;animation-delay:.4s}.wave:nth-child(6){height:80%;animation-delay:.5s}.wave:nth-child(7){height:60%;animation-delay:.6s}.wave:nth-child(8){height:40%;animation-delay:.7s}.wave:nth-child(9){height:20%;animation-delay:.8s}@keyframes wave{0%,to{transform:scaleY(.5);opacity:.5}50%{transform:scaleY(1);opacity:1}}.dolby-text h2{margin-bottom:var(--spacing-sm)}.dolby-features{margin-top:var(--spacing-md);display:flex;flex-direction:column;gap:var(--spacing-sm)}.feature-item{display:flex;align-items:flex-start;gap:var(--spacing-sm)}.feature-icon{flex-shrink:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;color:var(--color-accent)}.voix-content{max-width:800px;margin:0 auto;text-align:center}.voix-content p{margin:0 auto var(--spacing-md)}.voix-highlight{display:inline-block;padding:var(--spacing-sm) var(--spacing-md);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:4px;font-size:.875rem;color:var(--color-text-secondary)}.deroulement-section{background:var(--color-bg-secondary)}.steps-container{max-width:700px;margin:0 auto}.step{display:flex;gap:var(--spacing-md);padding:var(--spacing-md) 0;border-bottom:1px solid var(--color-border)}.step:last-child{border-bottom:none}.step-number{flex-shrink:0;width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--color-bg-tertiary);border:1px solid var(--color-border-light);border-radius:50%;font-size:.875rem;color:var(--color-accent)}.step-content h3{margin-bottom:var(--spacing-xs);font-size:1.125rem}.step-content p{font-size:.9375rem}.avertissement-box{max-width:800px;margin:0 auto;padding:var(--spacing-md);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-left:3px solid var(--color-accent);border-radius:4px}.avertissement-box h2{font-size:1.25rem;margin-bottom:var(--spacing-sm)}.avertissement-list{list-style:none;display:flex;flex-direction:column;gap:var(--spacing-xs)}.avertissement-list li{display:flex;align-items:flex-start;gap:var(--spacing-sm);color:var(--color-text-secondary);font-size:.9375rem}.avertissement-list li:before{content:"";flex-shrink:0;width:6px;height:6px;margin-top:.5em;background:var(--color-text-muted);border-radius:50%}.cta-section{text-align:center;padding:var(--spacing-xl) 0}.cta-content h2{margin-bottom:var(--spacing-sm)}.cta-content p{margin:0 auto var(--spacing-md)}.legal-page{padding-top:calc(80px + var(--spacing-lg));padding-bottom:var(--spacing-xl)}.legal-content{max-width:800px;margin:0 auto}.legal-content h1{margin-bottom:var(--spacing-lg);font-size:clamp(1.75rem,4vw,2.5rem)}.legal-content h2{margin-top:var(--spacing-lg);margin-bottom:var(--spacing-sm);font-size:1.25rem;color:var(--color-text-primary)}.legal-content p{margin-bottom:var(--spacing-sm);font-size:.9375rem;line-height:1.8}.legal-content ul{margin-bottom:var(--spacing-sm);padding-left:var(--spacing-md);color:var(--color-text-secondary)}.legal-content li{margin-bottom:var(--spacing-xs);font-size:.9375rem}.legal-content a{color:var(--color-accent)}.last-update{font-size:.875rem;color:var(--color-text-muted);margin-bottom:var(--spacing-lg)}.boutique-page{min-height:80vh;display:flex;align-items:center;justify-content:center;padding:var(--spacing-2xl) 0}.boutique-content{text-align:center;max-width:500px}.boutique-icon{color:var(--color-accent);margin-bottom:var(--spacing-md);opacity:.8}.boutique-content h1{font-size:clamp(1.5rem,4vw,2rem);margin-bottom:var(--spacing-sm)}.boutique-message{font-size:1rem;line-height:1.8;margin-bottom:var(--spacing-sm)}.boutique-submessage{font-size:.875rem;color:var(--color-text-muted);margin-bottom:var(--spacing-md)}.cookie-banner{position:fixed;bottom:0;left:0;right:0;z-index:1000;padding:var(--spacing-md);background:var(--color-bg-secondary);border-top:1px solid var(--color-border);animation:slideUp .4s ease}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.cookie-content{max-width:var(--max-width);margin:0 auto;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--spacing-md)}.cookie-text{flex:1;min-width:280px}.cookie-text p{font-size:.875rem;margin:0}.cookie-text a{color:var(--color-accent)}.cookie-buttons{display:flex;gap:var(--spacing-sm)}.cookie-buttons .btn{padding:.75rem 1.5rem;font-size:.875rem}@media(max-width:600px){.cookie-content{flex-direction:column;text-align:center}.cookie-buttons{width:100%;justify-content:center}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}