:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-background: #ffffff;--color-surface: #f8fafc;--color-text: #1e293b;--color-text-secondary: #64748b;--color-border: #e2e8f0;--color-border-hover: #cbd5e1;--color-empirical: #059669;--color-theoretical: #7c3aed;--color-review: #0891b2;--color-counter: #dc2626;--color-twitter: #000000;--color-linkedin: #0077b5;--color-facebook: #1877f2;--font-main: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background-color:var(--color-background);color:var(--color-text);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--color-primary);text-decoration:none;transition:color .2s ease}a:hover{color:var(--color-primary-hover);text-decoration:underline}.container{max-width:900px;margin:0 auto;padding:var(--spacing-lg);min-height:100vh;display:flex;flex-direction:column}.header{border-bottom:1px solid var(--color-border);padding-bottom:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.header-content{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:var(--spacing-md)}.header-text h1{font-size:2rem;font-weight:700;color:var(--color-text);margin:0}.title-link{background:none;border:none;font:inherit;color:inherit;cursor:pointer;padding:0}.title-link:hover{color:var(--color-primary)}.header-text .subtitle{color:var(--color-text-secondary);font-size:1rem;margin-top:var(--spacing-xs)}.language-switch{display:flex;align-items:center;gap:var(--spacing-sm);background:var(--color-surface);padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-md);border:1px solid var(--color-border)}.language-switch button{background:none;border:none;padding:var(--spacing-xs) var(--spacing-sm);font-size:.875rem;font-weight:500;color:var(--color-text-secondary);cursor:pointer;border-radius:var(--radius-sm);transition:all .2s ease}.language-switch button:hover{color:var(--color-primary)}.language-switch button.active{background:var(--color-primary);color:#fff}.language-switch .separator{color:var(--color-border)}.home-page{flex:1}.home-intro{text-align:center;margin-bottom:var(--spacing-2xl)}.home-intro h2{font-size:1.75rem;font-weight:600;margin-bottom:var(--spacing-md);color:var(--color-text)}.home-intro p{color:var(--color-text-secondary);font-size:1.125rem;max-width:600px;margin:0 auto}.section-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--spacing-lg)}.section-card{display:flex;flex-direction:column;align-items:flex-start;text-align:left;background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-xl);cursor:pointer;transition:all .2s ease;position:relative;font-family:inherit}.section-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-md);transform:translateY(-2px)}.section-card h3{font-size:1.25rem;font-weight:600;color:var(--color-text);margin-bottom:var(--spacing-sm)}.section-card p{color:var(--color-text-secondary);font-size:.9375rem;line-height:1.5;margin-bottom:var(--spacing-md);flex:1}.section-footer{display:flex;align-items:center;justify-content:space-between;width:100%;gap:var(--spacing-md)}.section-meta{font-size:.875rem;color:var(--color-primary);font-weight:500}.section-updated{font-size:.75rem;color:var(--color-text-secondary);font-style:italic}.section-arrow{position:absolute;right:var(--spacing-xl);top:50%;transform:translateY(-50%);font-size:1.5rem;color:var(--color-border);transition:all .2s ease}.section-card:hover .section-arrow{color:var(--color-primary);transform:translateY(-50%) translate(4px)}.back-button{display:inline-flex;align-items:center;gap:var(--spacing-sm);background:none;border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-sm) var(--spacing-md);font-size:.875rem;font-weight:500;color:var(--color-text-secondary);cursor:pointer;margin-bottom:var(--spacing-xl);transition:all .2s ease;font-family:inherit}.back-button:hover{border-color:var(--color-primary);color:var(--color-primary);background:var(--color-surface)}.research-section{flex:1}.intro-section{background:var(--color-surface);padding:var(--spacing-xl);border-radius:var(--radius-lg);margin-bottom:var(--spacing-xl);border:1px solid var(--color-border)}.intro-section h2{font-size:1.5rem;font-weight:600;margin-bottom:var(--spacing-md);color:var(--color-text)}.intro-text{color:var(--color-text-secondary);font-size:1rem;line-height:1.7}.intro-updated{margin-top:var(--spacing-md);font-size:.8125rem;color:var(--color-text-secondary);font-style:italic}.filter-section{display:flex;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-xl);flex-wrap:wrap}.filter-section label{font-weight:500;color:var(--color-text-secondary)}.category-select{padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--color-border);border-radius:var(--radius-md);background:#fff;font-size:.875rem;color:var(--color-text);cursor:pointer;transition:border-color .2s ease}.category-select:hover{border-color:var(--color-border-hover)}.category-select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1a}.paper-count{color:var(--color-text-secondary);font-size:.875rem}.paper-list{display:flex;flex-direction:column;gap:var(--spacing-lg)}.paper-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-xl);transition:box-shadow .2s ease,border-color .2s ease}.paper-card:hover{box-shadow:var(--shadow-md);border-color:var(--color-border-hover)}.paper-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-md)}.category-badge{font-size:.75rem;font-weight:600;text-transform:uppercase;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-sm);letter-spacing:.025em}.category-empirical{background:#0596691a;color:var(--color-empirical)}.category-theoretical{background:#7c3aed1a;color:var(--color-theoretical)}.category-review{background:#0891b21a;color:var(--color-review)}.category-counter{background:#dc26261a;color:var(--color-counter)}.paper-year{color:var(--color-text-secondary);font-size:.875rem}.paper-title{font-size:1.125rem;font-weight:600;line-height:1.4;margin-bottom:var(--spacing-sm)}.paper-title a{color:var(--color-text)}.paper-title a:hover{color:var(--color-primary)}.paper-authors{font-size:.875rem;color:var(--color-text-secondary);margin-bottom:var(--spacing-xs)}.paper-journal{font-size:.875rem;font-style:italic;color:var(--color-text-secondary);margin-bottom:var(--spacing-md)}.paper-summary{color:var(--color-text);font-size:.9375rem;line-height:1.6;margin-bottom:var(--spacing-lg)}.paper-actions{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:var(--spacing-md);padding-top:var(--spacing-md);border-top:1px solid var(--color-border)}.read-btn{display:inline-flex;align-items:center;gap:var(--spacing-xs);font-weight:600;font-size:.875rem;color:var(--color-primary)}.read-btn:hover{text-decoration:none;color:var(--color-primary-hover)}.share-buttons{display:flex;align-items:center;gap:var(--spacing-sm)}.share-btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm);border:1px solid var(--color-border);border-radius:var(--radius-sm);background:#fff;color:var(--color-text-secondary);font-size:.75rem;cursor:pointer;transition:all .2s ease;text-decoration:none}.share-btn:hover{border-color:var(--color-border-hover);text-decoration:none}.share-btn.copy-btn{padding:var(--spacing-xs) var(--spacing-md)}.share-btn.copy-btn:hover{background:var(--color-surface)}.share-btn.twitter:hover{background:var(--color-twitter);border-color:var(--color-twitter);color:#fff}.share-btn.linkedin:hover{background:var(--color-linkedin);border-color:var(--color-linkedin);color:#fff}.share-btn.facebook:hover{background:var(--color-facebook);border-color:var(--color-facebook);color:#fff}.share-btn.email:hover{background:var(--color-text);border-color:var(--color-text);color:#fff}.view-all-container{text-align:center;margin-top:var(--spacing-xl)}.view-all-link{display:inline-flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-xl);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text-secondary);font-weight:500;font-size:1rem;transition:all .2s ease}.view-all-link:hover{border-color:var(--color-primary);color:var(--color-primary);text-decoration:none;background:var(--color-surface)}.view-all-link .section-arrow{position:static;transform:none;font-size:1.25rem}.archive-page{flex:1}.archive-header{margin-bottom:var(--spacing-xl)}.archive-header h2{font-size:1.75rem;font-weight:600;margin-bottom:var(--spacing-sm)}.archive-subtitle{color:var(--color-text-secondary);font-size:1.125rem}.archive-search{display:flex;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-xl)}.search-input{flex:1;padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:.9375rem;font-family:var(--font-main);color:var(--color-text);background:#fff;transition:border-color .2s ease}.search-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1a}.search-input::placeholder{color:var(--color-text-secondary)}.impressum-content h3{font-size:1.125rem;font-weight:600;margin-top:var(--spacing-xl);margin-bottom:var(--spacing-sm);color:var(--color-text)}.impressum-content h3:first-child{margin-top:var(--spacing-md)}.impressum-content p{color:var(--color-text-secondary);font-size:1rem;line-height:1.7;margin-bottom:var(--spacing-md)}.footer{margin-top:var(--spacing-2xl);padding-top:var(--spacing-lg);border-top:1px solid var(--color-border);text-align:center;color:var(--color-text-secondary);font-size:.875rem}.footer-link{background:none;border:none;color:var(--color-text-secondary);font-size:.875rem;font-family:inherit;cursor:pointer;margin-top:var(--spacing-xs);transition:color .2s ease}.footer-link:hover{color:var(--color-primary)}@media(max-width:640px){.container{padding:var(--spacing-md)}.header-content{flex-direction:column;align-items:flex-start}.header-text h1{font-size:1.5rem}.intro-section,.paper-card{padding:var(--spacing-lg)}.paper-actions{flex-direction:column;align-items:flex-start}.share-buttons{width:100%;justify-content:flex-start}.filter-section{flex-direction:column;align-items:flex-start}.category-select{width:100%}.archive-search{flex-direction:column;align-items:stretch}}