:root{--color-teal: #00c4cc;--color-teal-dark: #009aa0;--color-maroon: #8b1538;--color-maroon-dark: #6d0f2a;--color-black: #000000;--color-white: #ffffff;--color-gray-light: #f5f5f5;--color-gray: #666666;--color-gray-dark: #333333}*,*:before,*:after{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}img,svg{max-width:100%;height:auto;display:block}.app{min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica Neue,Arial,sans-serif;color:#000;line-height:1.6;background:#fff;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none}@media(max-width:768px){html{scroll-behavior:smooth;-webkit-overflow-scrolling:touch}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}}.navbar{position:fixed;top:0;left:0;right:0;background:#fffffffa;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,0,0,.08);z-index:1000;padding:1.25rem 0;transition:all .3s 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#e0e0e0;padding-top:3rem;flex-direction:row;justify-content:space-around;padding-left:0}.stat-number{font-size:2rem}.hero-title{margin-bottom:1.5rem}.hero-subtitle{margin-bottom:2rem}.features-grid{grid-template-columns:1fr}.container{padding:0 1.5rem}.kurse-section{padding:4rem 0}.kurse-grid{grid-template-columns:1fr;gap:2rem}.kurs-card{padding:2rem}.filter-container{margin-bottom:3rem}.hashtag-filter{padding:.625rem 1.25rem;font-size:.875rem}.kurs-actions{grid-template-columns:1fr}.detail-content{grid-template-columns:1fr;padding:2rem}.detail-header{padding:2rem}.detail-title{font-size:2rem}.detail-info-grid{grid-template-columns:1fr}.detail-sidebar{position:static}.modal-content.detail-modal{max-width:100%;margin:1rem}.form-row,.features{grid-template-columns:1fr}.modal-content{padding:2rem 1.5rem}}@media(max-width:480px){.nav-container{padding:0 1rem}.hero{padding:5rem 1rem 2rem}.container{padding:0 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