:root{--color-black: #0a0a0a;--color-graphite: #1a1a1a;--color-midnight: #0f1419;--color-dark-blue: #0d1b2a;--color-teal: #00d9ff;--color-cyan: #00ffcc;--color-violet: #a78bfa;--color-aurora-1: #00d9ff;--color-aurora-2: #7c3aed;--color-aurora-3: #00ffcc;--gradient-primary: linear-gradient(135deg, var(--color-teal) 0%, var(--color-violet) 100%);--gradient-aurora: linear-gradient(135deg, var(--color-aurora-1) 0%, var(--color-aurora-2) 50%, var(--color-aurora-3) 100%);--gradient-dark: linear-gradient(180deg, var(--color-black) 0%, var(--color-midnight) 100%);--color-text-primary: #ffffff;--color-text-secondary: #b4b4b4;--color-text-muted: #6b7280;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-weight-light: 300;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--spacing-2xl: 4rem;--spacing-3xl: 6rem;--radius-sm: .5rem;--radius-md: 1rem;--radius-lg: 1.5rem;--radius-xl: 2rem;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px rgba(0, 217, 255, .3);--transition-fast: .2s ease;--transition-normal: .3s ease;--transition-slow: .5s ease}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-family);background:var(--gradient-dark);color:var(--color-text-primary);line-height:1.6;overflow-x:hidden;min-height:100vh}h1,h2,h3,h4,h5,h6{font-weight:var(--font-weight-semibold);line-height:1.2;margin-bottom:var(--spacing-md)}h1{font-size:clamp(2.5rem,5vw,4rem)}h2{font-size:clamp(2rem,4vw,3rem)}h3{font-size:clamp(1.5rem,3vw,2rem)}h4{font-size:1.25rem}p{margin-bottom:var(--spacing-sm);color:var(--color-text-secondary)}a{color:var(--color-teal);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-cyan)}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.section{padding:var(--spacing-3xl) 0;position:relative}.section-title{text-align:center;margin-bottom:var(--spacing-xl);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.section-subtitle{text-align:center;max-width:700px;margin:0 auto var(--spacing-xl);font-size:1.125rem;color:var(--color-text-secondary)}.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:#0a0a1acc;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.1);transition:all var(--transition-normal)}.navbar.scrolled{background:#0a0a1af2;box-shadow:var(--shadow-md)}.navbar-content{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-sm) var(--spacing-md)}.navbar-brand .logo{font-size:1.5rem;font-weight:var(--font-weight-bold);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.navbar-menu{display:flex;align-items:center;gap:var(--spacing-md)}.nav-link{color:var(--color-text-secondary);font-weight:var(--font-weight-medium);padding:var(--spacing-xs) var(--spacing-sm);transition:color var(--transition-fast)}.nav-link:hover{color:var(--color-text-primary)}.lang-toggle{background:#ffffff1a;border:1px solid rgba(255,255,255,.2);color:var(--color-text-primary);padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-sm);cursor:pointer;font-weight:var(--font-weight-medium);transition:all var(--transition-fast)}.lang-toggle:hover{background:#ffffff26;border-color:var(--color-teal)}.btn{padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--radius-md);font-weight:var(--font-weight-semibold);cursor:pointer;transition:all var(--transition-normal);border:none;font-size:1rem;display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-xs)}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:var(--shadow-glow)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 30px #00d9ff80}.btn-secondary{background:#ffffff1a;color:var(--color-text-primary);border:1px solid rgba(255,255,255,.2)}.btn-secondary:hover{background:#ffffff26;border-color:var(--color-teal)}.btn-large{padding:var(--spacing-md) var(--spacing-xl);font-size:1.125rem}.hero{position:relative;height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden}.hero-video{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;z-index:1}.hero-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(180deg,#0a0a1ab3,#0a0a1ae6);z-index:2}.hero-content{position:relative;z-index:3;text-align:center;max-width:900px;padding:var(--spacing-xl)}.hero-title{margin-bottom:var(--spacing-md);animation:fadeInUp 1s ease}.hero-subtitle{font-size:1.25rem;margin-bottom:var(--spacing-xl);color:var(--color-text-secondary);animation:fadeInUp 1s ease .2s both}.hero-cta{display:flex;gap:var(--spacing-md);justify-content:center;flex-wrap:wrap;animation:fadeInUp 1s ease .4s both}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.about-section{background:var(--color-graphite)}.about-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-xl)}.about-card{background:#ffffff0d;padding:var(--spacing-xl);border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.1);transition:all var(--transition-normal)}.about-card:hover{transform:translateY(-5px);border-color:var(--color-teal);box-shadow:var(--shadow-glow)}.about-icon{font-size:3rem;margin-bottom:var(--spacing-md)}.about-card h3{color:var(--color-text-primary);margin-bottom:var(--spacing-sm)}.tests-section{background:var(--color-midnight)}.tests-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.test-card{background:#ffffff0d;padding:var(--spacing-lg);border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.1);transition:all var(--transition-normal);cursor:pointer}.test-card:hover{transform:translateY(-5px);border-color:var(--color-violet);box-shadow:0 0 20px #a78bfa4d}.test-icon{font-size:2.5rem;margin-bottom:var(--spacing-sm)}.test-card h3{color:var(--color-text-primary);margin-bottom:var(--spacing-sm);font-size:1.25rem}.test-card p{font-size:.95rem;margin-bottom:var(--spacing-md)}.test-duration{display:inline-block;background:#00d9ff1a;color:var(--color-teal);padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-sm);font-size:.875rem;font-weight:var(--font-weight-medium)}.disclaimer{background:#ffc1071a;border-left:4px solid #ffc107;padding:var(--spacing-md);border-radius:var(--radius-sm);text-align:center}.disclaimer p{color:#ffc107;margin:0}.dashboard-preview{background:var(--color-graphite)}.dashboard-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-xl)}.feature-card{text-align:center;padding:var(--spacing-xl)}.feature-icon{font-size:3rem;margin-bottom:var(--spacing-md)}.feature-card h3{color:var(--color-text-primary);margin-bottom:var(--spacing-sm)}.supplements-section{background:var(--color-midnight)}.supplements-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-lg)}.supplement-card{background:#ffffff0d;padding:var(--spacing-lg);border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.1);transition:all var(--transition-normal)}.supplement-card:hover{transform:translateY(-5px);border-color:var(--color-cyan);box-shadow:0 0 20px #00ffcc4d}.supplement-header{display:flex;justify-content:space-between;align-items:start;margin-bottom:var(--spacing-sm)}.supplement-card h3{color:var(--color-text-primary);margin-bottom:0}.evidence-badge{padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-sm);font-size:.75rem;font-weight:var(--font-weight-semibold);text-transform:uppercase}.evidence-strong{background:#22c55e33;color:#22c55e}.evidence-moderate{background:#fbbf2433;color:#fbbf24}.evidence-low{background:#9ca3af33;color:#9ca3af}.guides-section{background:var(--color-graphite)}.guides-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:var(--spacing-lg)}.guide-card{background:#ffffff0d;padding:var(--spacing-lg);border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.1);transition:all var(--transition-normal);cursor:pointer}.guide-card:hover{transform:translateY(-5px);border-color:var(--color-violet);box-shadow:0 0 20px #a78bfa4d}.guide-card h3{color:var(--color-text-primary);margin-bottom:var(--spacing-sm)}.guide-card .read-more{color:var(--color-teal);font-weight:var(--font-weight-semibold);display:inline-flex;align-items:center;gap:var(--spacing-xs);margin-top:var(--spacing-sm)}.chatbot-toggle{position:fixed;bottom:var(--spacing-lg);right:var(--spacing-lg);width:60px;height:60px;border-radius:50%;background:var(--gradient-primary);border:none;cursor:pointer;box-shadow:var(--shadow-lg);z-index:999;display:flex;align-items:center;justify-content:center;transition:all var(--transition-normal)}.chatbot-toggle:hover{transform:scale(1.1);box-shadow:0 0 30px #00d9ff80}.chatbot-icon{font-size:1.75rem}.chatbot-window{position:fixed;bottom:100px;right:var(--spacing-lg);width:400px;height:600px;background:var(--color-graphite);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);z-index:998;display:flex;flex-direction:column;border:1px solid rgba(255,255,255,.1);overflow:hidden}.chatbot-window.hidden{display:none}.chatbot-header{background:var(--gradient-primary);padding:var(--spacing-md);display:flex;justify-content:space-between;align-items:center}.chatbot-header h3{margin:0;font-size:1.125rem}.chatbot-close{background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:0;width:30px;height:30px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:background var(--transition-fast)}.chatbot-close:hover{background:#fff3}.chatbot-messages{flex:1;overflow-y:auto;padding:var(--spacing-md);display:flex;flex-direction:column;gap:var(--spacing-sm)}.chatbot-message{padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);max-width:80%;animation:slideIn .3s ease}.bot-message{background:#00d9ff1a;border:1px solid rgba(0,217,255,.3);align-self:flex-start}.user-message{background:#a78bfa1a;border:1px solid rgba(167,139,250,.3);align-self:flex-end}.chatbot-input-container{padding:var(--spacing-md);border-top:1px solid rgba(255,255,255,.1);display:flex;gap:var(--spacing-sm)}.chatbot-input{flex:1;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-sm);padding:var(--spacing-sm);color:var(--color-text-primary);font-family:var(--font-family)}.chatbot-input:focus{outline:none;border-color:var(--color-teal)}.chatbot-send{background:var(--gradient-primary);border:none;color:#fff;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-sm);cursor:pointer;font-weight:var(--font-weight-semibold);transition:all var(--transition-fast)}.chatbot-send:hover{transform:translateY(-2px)}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.footer{background:var(--color-black);padding:var(--spacing-3xl) 0 var(--spacing-lg);border-top:1px solid rgba(255,255,255,.1)}.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-xl);margin-bottom:var(--spacing-xl)}.footer-column h4{color:var(--color-text-primary);margin-bottom:var(--spacing-md);font-size:1.125rem}.footer-column a{display:block;color:var(--color-text-secondary);margin-bottom:var(--spacing-xs);transition:color var(--transition-fast)}.footer-column a:hover{color:var(--color-teal)}.footer-column p{font-size:.95rem;margin-bottom:var(--spacing-md)}.newsletter-form{display:flex;gap:var(--spacing-xs);flex-direction:column}.newsletter-input{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-sm);padding:var(--spacing-sm);color:var(--color-text-primary);font-family:var(--font-family)}.newsletter-input:focus{outline:none;border-color:var(--color-teal)}.footer-bottom{text-align:center;padding-top:var(--spacing-lg);border-top:1px solid rgba(255,255,255,.1)}.footer-bottom p{color:var(--color-text-muted);font-size:.875rem}.modal{position:fixed;top:0;left:0;width:100%;height:100%;background:#000c;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:2000;display:flex;align-items:center;justify-content:center;padding:var(--spacing-md)}.modal.hidden{display:none}.modal-content{background:var(--color-graphite);border-radius:var(--radius-lg);padding:var(--spacing-xl);max-width:500px;width:100%;max-height:90vh;overflow-y:auto;position:relative;border:1px solid rgba(255,255,255,.1);box-shadow:var(--shadow-lg)}.modal-large{max-width:1000px}.modal-close{position:absolute;top:var(--spacing-md);right:var(--spacing-md);background:#ffffff1a;border:none;color:#fff;font-size:1.5rem;cursor:pointer;width:35px;height:35px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all var(--transition-fast)}.modal-close:hover{background:#fff3;transform:rotate(90deg)}.form-group{margin-bottom:var(--spacing-md)}.form-label{display:block;margin-bottom:var(--spacing-xs);color:var(--color-text-primary);font-weight:var(--font-weight-medium)}.form-input{width:100%;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-sm);padding:var(--spacing-sm);color:var(--color-text-primary);font-family:var(--font-family);font-size:1rem;transition:all var(--transition-fast)}.form-input:focus{outline:none;border-color:var(--color-teal);box-shadow:0 0 0 3px #00d9ff1a}.form-error{color:#ef4444;font-size:.875rem;margin-top:var(--spacing-xs)}@media (max-width: 768px){.navbar-menu{gap:var(--spacing-sm)}.nav-link{display:none}.hero-cta{flex-direction:column}.chatbot-window{width:calc(100% - 2rem);right:1rem;left:1rem}.about-grid,.tests-grid,.dashboard-features,.supplements-grid,.guides-grid{grid-template-columns:1fr}}.hidden{display:none!important}.text-center{text-align:center}.mt-1{margin-top:var(--spacing-sm)}.mt-2{margin-top:var(--spacing-md)}.mt-3{margin-top:var(--spacing-lg)}.mb-1{margin-bottom:var(--spacing-sm)}.mb-2{margin-bottom:var(--spacing-md)}.mb-3{margin-bottom:var(--spacing-lg)}