.layout{min-height:100vh;display:flex;flex-direction:column}.header{background-color:var(--bg-secondary);border-bottom:1px solid var(--border-color);padding:1rem 0;position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.header-content{display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.5rem;font-weight:700;color:var(--text-primary);text-decoration:none}.logo-accent{color:var(--emerald-500)}.nav{display:flex;align-items:center;gap:2rem}.nav-link{color:var(--text-secondary);font-weight:500;transition:color .3s ease;position:relative}.nav-link:hover,.nav-link.active{color:var(--emerald-500)}.nav-link.active:after{content:"";position:absolute;bottom:-4px;left:0;right:0;height:2px;background-color:var(--emerald-500)}.lang-toggle{background-color:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color);padding:6px 12px;border-radius:4px;cursor:pointer;font-size:14px;transition:all .3s ease}.lang-toggle:hover{background-color:var(--emerald-600);border-color:var(--emerald-600)}.mobile-menu-toggle{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:8px}.mobile-menu-toggle span{width:24px;height:2px;background-color:var(--text-primary);transition:all .3s ease}.main-content{flex:1}.footer{background-color:var(--bg-secondary);border-top:1px solid var(--border-color);padding:2rem 0;margin-top:4rem;text-align:center;color:var(--text-muted)}@media (max-width: 768px){.mobile-menu-toggle{display:flex}.nav{position:absolute;top:100%;left:0;right:0;background-color:var(--bg-secondary);flex-direction:column;padding:1rem;gap:1rem;border-top:1px solid var(--border-color);transform:translateY(-100%);opacity:0;visibility:hidden;transition:all .3s ease}.nav-open{transform:translateY(0);opacity:1;visibility:visible}.nav-link{width:100%;text-align:center;padding:.5rem}}.page{min-height:calc(100vh - 200px)}.page-header{padding:4rem 0 2rem;background:linear-gradient(135deg,var(--bg-secondary) 0%,var(--bg-tertiary) 100%);border-bottom:1px solid var(--border-color)}.page-header h1{font-size:3rem;margin-bottom:1rem;color:var(--text-primary)}.page-subtitle{font-size:1.25rem;color:var(--text-secondary);max-width:800px}.hero{padding:6rem 0;background:linear-gradient(135deg,var(--bg-secondary) 0%,var(--bg-primary) 100%);text-align:center}.hero-content{max-width:800px;margin:0 auto}.hero-title{font-size:3.5rem;margin-bottom:1rem;background:linear-gradient(135deg,var(--text-primary) 0%,var(--emerald-500) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-subtitle{font-size:1.5rem;color:var(--emerald-500);margin-bottom:1rem;font-weight:600}.hero-description{font-size:1.125rem;color:var(--text-secondary);margin-bottom:2rem;line-height:1.8}.features{padding:4rem 0}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-top:2rem}.feature-card{background-color:var(--bg-secondary);padding:2rem;border-radius:8px;border:1px solid var(--border-color);transition:all .3s ease}.feature-card:hover{transform:translateY(-4px);border-color:var(--emerald-500);box-shadow:0 8px 24px #10b98133}.feature-icon{font-size:3rem;margin-bottom:1rem}.feature-card h3{color:var(--emerald-500);margin-bottom:.5rem;font-size:1.25rem}.feature-card p{color:var(--text-secondary);line-height:1.6}.courses-section{padding:4rem 0}.courses-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;margin-top:2rem}.course-card{background-color:var(--bg-secondary);padding:2rem;border-radius:8px;border:1px solid var(--border-color);transition:all .3s ease;display:flex;flex-direction:column;text-decoration:none;color:inherit}.course-card:hover{transform:translateY(-4px);border-color:var(--emerald-500);box-shadow:0 8px 24px #10b98133}.course-icon{font-size:3rem;margin-bottom:1rem}.course-card h2{color:var(--emerald-500);margin-bottom:1rem;font-size:1.5rem}.course-card p{color:var(--text-secondary);line-height:1.6;flex:1;margin-bottom:1rem}.course-link{color:var(--emerald-500);font-weight:600;margin-top:auto}.course-content{padding:3rem 0}.content-section{margin-bottom:3rem}.content-section h2{color:var(--emerald-500);font-size:2rem;margin-bottom:1rem}.content-section p{color:var(--text-secondary);line-height:1.8;margin-bottom:1rem;font-size:1.125rem}.topic-list{list-style:none;padding-left:0}.topic-list li{color:var(--text-secondary);padding:.75rem 0 .75rem 1.5rem;position:relative;line-height:1.6}.topic-list li:before{content:"→";position:absolute;left:0;color:var(--emerald-500);font-weight:700}.model-card{background-color:var(--bg-secondary);padding:2rem;border-radius:8px;border:1px solid var(--border-color);margin-bottom:1.5rem;transition:all .3s ease}.model-card:hover{border-color:var(--emerald-500);box-shadow:0 4px 12px #10b9811a}.model-card h3{color:var(--emerald-500);margin-bottom:.75rem;font-size:1.5rem}.model-card p{color:var(--text-secondary);line-height:1.8}.contact-info{max-width:700px}.contact-details{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem;margin:2rem 0}.contact-item h3{color:var(--emerald-500);margin-bottom:.5rem}.contact-item p{color:var(--text-secondary)}.contact-form{margin-top:2rem}.form-group{margin-bottom:1.5rem}.form-group label{display:block;color:var(--text-primary);margin-bottom:.5rem;font-weight:500}.form-group input,.form-group textarea{width:100%;padding:.75rem;background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-size:1rem;font-family:inherit;transition:border-color .3s ease}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--emerald-500)}.form-group textarea{resize:vertical}@media (max-width: 768px){.hero-title{font-size:2.5rem}.page-header h1{font-size:2rem}.features-grid,.courses-grid{grid-template-columns:1fr}}*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #0a0e1a;--bg-secondary: #111827;--bg-tertiary: #1f2937;--emerald-500: #10b981;--emerald-600: #059669;--emerald-700: #047857;--text-primary: #f9fafb;--text-secondary: #d1d5db;--text-muted: #9ca3af;--border-color: #374151}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}a{color:var(--emerald-500);text-decoration:none;transition:color .3s ease}a:hover{color:var(--emerald-600)}.container{max-width:1200px;margin:0 auto;padding:0 20px}.btn{display:inline-block;padding:12px 24px;background-color:var(--emerald-600);color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:16px;font-weight:500;transition:all .3s ease}.btn:hover{background-color:var(--emerald-700);transform:translateY(-2px);box-shadow:0 4px 12px #10b9814d}.btn-secondary{background-color:var(--bg-tertiary);color:var(--text-primary)}.btn-secondary:hover{background-color:var(--border-color)}