.header{background-color:var(--background);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background-color:#111827f2}.navbar{padding:var(--spacing-sm) 0}.navbar .container{display:flex;justify-content:space-between;align-items:center}.nav-brand{display:flex;align-items:center;gap:var(--spacing-xs);font-size:1.5rem;font-weight:700;color:var(--text-primary)}.logo{font-size:2rem}.nav-links{display:flex;gap:var(--spacing-lg)}.nav-links a{text-decoration:none;color:var(--text-secondary);font-weight:500;transition:color .2s ease-in-out}.nav-links a:hover{color:var(--primary-color)}.welcome-section{background:linear-gradient(135deg,#4c1d95,#581c87,#7c2d12);color:#fff;padding:var(--spacing-2xl) 0;text-align:center;min-height:80vh;display:flex;align-items:center}.main-title{font-size:3.5rem;font-weight:800;margin-bottom:var(--spacing-md);line-height:1.2}.subtitle{font-size:1.25rem;margin-bottom:var(--spacing-xl);opacity:.9;max-width:600px;margin-left:auto;margin-right:auto}.cta-buttons{display:flex;gap:var(--spacing-md);justify-content:center;flex-wrap:wrap}.features-section{padding:var(--spacing-2xl) 0;background-color:var(--surface)}.features-section h2{text-align:center;font-size:2.5rem;font-weight:700;margin-bottom:var(--spacing-xl);color:var(--text-primary)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-xl);margin-top:var(--spacing-xl)}.feature-card{background:var(--background);padding:var(--spacing-xl);border-radius:var(--radius-xl);text-align:center;box-shadow:var(--shadow-md);transition:transform .2s ease-in-out,box-shadow .2s ease-in-out}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.feature-icon{font-size:3rem;margin-bottom:var(--spacing-md)}.feature-card h3{font-size:1.5rem;font-weight:600;margin-bottom:var(--spacing-sm);color:var(--text-primary)}.feature-card p{color:var(--text-secondary);line-height:1.6}.virtual-space-section{padding:var(--spacing-2xl) 0;background-color:var(--background);text-align:center}.virtual-space-section h2{font-size:2.5rem;font-weight:700;margin-bottom:var(--spacing-md);color:var(--text-primary)}.section-description{font-size:1.25rem;color:var(--text-secondary);margin-bottom:var(--spacing-xl);max-width:600px;margin-left:auto;margin-right:auto}.iframe-container{position:relative;width:100%;max-width:1200px;margin:0 auto;padding-bottom:56.25%;height:0;border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-lg);background-color:var(--surface)}.virtual-space-iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:none;border-radius:var(--radius-xl)}.stats-section{padding:var(--spacing-2xl) 0;background:linear-gradient(135deg,#4c1d95,#581c87,#7c2d12);color:#fff;text-align:center}.stats-section h2{font-size:2.5rem;font-weight:700;margin-bottom:var(--spacing-xl)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-xl);margin-top:var(--spacing-xl)}.stat-item{padding:var(--spacing-lg)}.stat-number{font-size:3rem;font-weight:800;margin-bottom:var(--spacing-xs);color:#fff}.stat-label{font-size:1.1rem;opacity:.9;font-weight:500}.footer{background-color:var(--surface);color:var(--text-primary);padding:var(--spacing-lg) 0;text-align:center;border-top:1px solid var(--border)}.footer p{opacity:.8}@media (max-width: 768px){.nav-links{display:none}.main-title{font-size:2.5rem}.subtitle{font-size:1.1rem}.cta-buttons{flex-direction:column;align-items:center}.features-grid{grid-template-columns:1fr;gap:var(--spacing-lg)}.stats-grid{grid-template-columns:1fr;gap:var(--spacing-md)}.stat-number{font-size:2.5rem}.features-section h2,.stats-section h2,.virtual-space-section h2{font-size:2rem}.section-description{font-size:1rem}.iframe-container{padding-bottom:75%;margin:0 var(--spacing-sm)}}@media (max-width: 480px){.welcome-section{padding:var(--spacing-xl) 0}.main-title{font-size:2rem}.feature-card{padding:var(--spacing-lg)}}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #8b5cf6;--primary-hover: #7c3aed;--secondary-color: #374151;--accent-color: #10b981;--text-primary: #f9fafb;--text-secondary: #d1d5db;--background: #1a1a1a;--surface: #1f2937;--border: #374151;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--spacing-2xl: 4rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .3);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .4), 0 2px 4px -2px rgb(0 0 0 / .3);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .5), 0 4px 6px -4px rgb(0 0 0 / .4)}body{font-family:var(--font-family);line-height:1.6;color:var(--text-primary);background-color:var(--background);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}@media (max-width: 768px){.container{padding:0 var(--spacing-sm)}}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;font-size:1rem;font-weight:500;text-decoration:none;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all .2s ease-in-out;min-width:120px}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-lg)}.btn-secondary{background-color:transparent;color:var(--primary-color);border:2px solid var(--primary-color)}.btn-secondary:hover{background-color:var(--primary-color);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg)}@media (max-width: 768px){.btn{padding:.625rem 1.25rem;font-size:.875rem;min-width:100px}}