:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegidity;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body.light{--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--text-primary: #1a1a1a;--text-secondary: #4a5568;--text-tertiary: #718096;--border-color: #e2e8f0;--accent-color: #3182ce;--accent-hover: #2c5aa0}body.dark{--bg-primary: #1a202c;--bg-secondary: #2d3748;--text-primary: #f7fafc;--text-secondary: #e2e8f0;--text-tertiary: #a0aec0;--border-color: #4a5568;--accent-color: #63b3ed;--accent-hover: #4299e1}body{margin:0;min-height:100vh;background-color:var(--bg-secondary);color:var(--text-primary);transition:background-color .3s,color .3s}*{box-sizing:border-box}a{color:var(--accent-color);text-decoration:none}a:hover{color:var(--accent-hover)}button{font-family:inherit;border:none;cursor:pointer;transition:all .2s}button:focus{outline:2px solid var(--accent-color);outline-offset:2px}h1,h2,h3,h4,h5,h6{margin:0;line-height:1.2}p{margin:0}.app{min-height:100vh;display:flex;flex-direction:column;position:relative}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{transform:translate(-100%)}to{transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.animate-in{animation:fadeIn .5s ease-out}.skeleton{pointer-events:none}.skeleton-image{width:100%;height:200px;background:linear-gradient(90deg,var(--border-color) 25%,var(--bg-secondary) 50%,var(--border-color) 75%);background-size:200% 100%;animation:pulse 1.5s infinite;border-radius:8px 8px 0 0}.skeleton-title{height:24px;background:linear-gradient(90deg,var(--border-color) 25%,var(--bg-secondary) 50%,var(--border-color) 75%);background-size:200% 100%;animation:pulse 1.5s infinite;border-radius:4px;margin-bottom:1rem}.skeleton-text{height:16px;background:linear-gradient(90deg,var(--border-color) 25%,var(--bg-secondary) 50%,var(--border-color) 75%);background-size:200% 100%;animation:pulse 1.5s infinite;border-radius:4px;margin-bottom:.5rem}.skeleton-text.short{width:60%}.skeleton-meta{height:14px;width:80%;background:linear-gradient(90deg,var(--border-color) 25%,var(--bg-secondary) 50%,var(--border-color) 75%);background-size:200% 100%;animation:pulse 1.5s infinite;border-radius:4px;margin-top:1rem}.header{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;border-bottom:1px solid var(--border-color);background:var(--bg-primary);position:sticky;top:0;z-index:100}.header-actions{display:flex;align-items:center;gap:1rem}.header-bookmark{display:flex;align-items:center;gap:.5rem;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:20px;padding:.5rem .75rem;color:var(--text-secondary);cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);transform:translate(20px);opacity:0;visibility:hidden;font-size:.9rem;font-weight:500}.header-bookmark.visible{transform:translate(0);opacity:1;visibility:visible}.header-bookmark.active{background:var(--accent-color);border-color:var(--accent-color);color:#fff}.header-bookmark:hover{background:var(--accent-color);border-color:var(--accent-color);color:#fff;transform:translate(0) scale(1.05)}.bookmark-count{background:#fff3;border-radius:10px;padding:.1rem .4rem;font-size:.75rem;font-weight:600;min-width:18px;text-align:center}.header-bookmark.active .bookmark-count,.header-bookmark:hover .bookmark-count{background:#ffffff4d}.header h1{margin:0;font-size:2rem;font-weight:700;color:var(--text-primary)}.theme-toggle{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-secondary);transition:color .2s}.theme-toggle:hover{color:var(--accent-color)}.search-section{display:flex;gap:1rem;padding:1rem 2rem;background:var(--bg-secondary);border-bottom:1px solid var(--border-color);align-items:center}.search-input{flex:1;padding:.75rem 1rem;border:2px solid var(--border-color);border-radius:25px;background:var(--bg-primary);color:var(--text-primary);font-size:1rem;transition:border-color .2s}.search-input:focus{outline:none;border-color:var(--accent-color)}.categories{display:flex;gap:.5rem;padding:1rem 2rem;background:var(--bg-secondary);overflow-x:auto;border-bottom:1px solid var(--border-color)}.category-btn{display:flex;align-items:center;gap:.5rem;padding:.5rem 1rem;border:2px solid var(--border-color);border-radius:25px;background:var(--bg-primary);color:var(--text-secondary);cursor:pointer;transition:all .2s;white-space:nowrap;font-weight:500}.category-btn svg{flex-shrink:0}.category-btn:hover{border-color:var(--accent-color);color:var(--accent-color)}.category-btn.active{background:var(--accent-color);border-color:var(--accent-color);color:#fff}.main{flex:1;padding:2rem;max-width:1400px;margin:0 auto;width:100%}.loading,.error,.empty{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:300px;text-align:center}.spinner{width:40px;height:40px;border:4px solid var(--border-color);border-top:4px solid var(--accent-color);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:1rem}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.error button{margin-top:1rem;padding:.5rem 1rem;background:var(--accent-color);color:#fff;border:none;border-radius:5px;cursor:pointer}.articles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:2rem}.article-card{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:12px;overflow:hidden;transition:transform .2s,box-shadow .2s}.article-card:hover{transform:translateY(-4px);box-shadow:0 8px 25px #0000001a;transition:all .3s cubic-bezier(.4,0,.2,1)}.article-card{transition:all .3s cubic-bezier(.4,0,.2,1)}.article-image{width:100%;height:200px;object-fit:cover}.article-content{padding:1.5rem}.article-header{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:1rem}.article-actions{display:flex;gap:.5rem;flex-shrink:0}.bookmark-btn,.share-btn{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:50%;width:36px;height:36px;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:var(--text-secondary)}.bookmark-btn:hover,.share-btn:hover{border-color:var(--accent-color);background:var(--accent-color);color:#fff;transform:scale(1.1);transition:all .2s ease}.bookmark-btn,.share-btn{transition:all .2s ease}.bookmark-btn.bookmarked{background:var(--accent-color);border-color:var(--accent-color);color:#fff}.article-title{margin:0;font-size:1.2rem;font-weight:600;line-height:1.4;color:var(--text-primary);flex:1}.article-description{margin:0 0 1rem;color:var(--text-secondary);line-height:1.5;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.article-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;font-size:.9rem;color:var(--text-tertiary);flex-wrap:wrap;gap:.5rem}.reading-time{background:var(--bg-secondary);padding:.25rem .5rem;border-radius:12px;font-size:.8rem}.article-source{font-weight:600}.read-more-btn{display:inline-block;padding:.75rem 1.5rem;background:var(--accent-color);color:#fff;text-decoration:none;border:none;border-radius:6px;font-weight:500;cursor:pointer;transition:background .2s}.read-more-btn:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 4px 12px #00000026}.read-more-btn{transition:all .3s ease}.back-btn{display:flex;align-items:center;gap:.5rem;background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:1rem;transition:color .2s}.back-btn:hover{color:var(--accent-color)}.reader-article{background:var(--bg-primary);border-radius:12px;overflow:hidden;box-shadow:0 4px 20px #0000001a}.reader-layout{display:grid;grid-template-columns:1fr 1.5fr;gap:2rem}.reader-image-section{display:flex;align-items:stretch}.reader-image{width:100%;height:100%;min-height:500px;object-fit:cover;border-radius:8px}.reader-content-section{display:flex;flex-direction:column}.reader-header{padding:2rem 2rem 1rem 0}.reader-title{margin:0 0 1rem;font-size:2rem;font-weight:700;line-height:1.3;color:var(--text-primary)}.reader-meta{display:flex;flex-wrap:wrap;gap:1rem;font-size:.9rem;color:var(--text-tertiary);border-bottom:1px solid var(--border-color);padding-bottom:1rem}.reader-source{font-weight:600;color:var(--accent-color)}.reader-content{padding:0 2rem 2rem 0;flex:1}.reader-description{font-size:1.1rem;line-height:1.6;color:var(--text-secondary);margin:0 0 1.5rem;font-weight:500}.reader-text{font-size:1rem;line-height:1.7;color:var(--text-primary);margin:0}.reader-footer{padding:2rem;border-top:1px solid var(--border-color);background:var(--bg-secondary)}.source-attribution{margin-bottom:1.5rem;padding:1rem;background:var(--bg-primary);border-radius:8px;border-left:4px solid var(--accent-color)}.source-attribution p{margin:.5rem 0;font-size:.9rem;color:var(--text-secondary)}.disclaimer{font-style:italic;color:var(--text-tertiary)!important}.reader-actions{display:flex;gap:1rem;flex-wrap:wrap}.reader-actions .bookmark-btn,.reader-actions .share-btn,.original-link-btn{display:flex;align-items:center;gap:.5rem;padding:.75rem 1rem;border:2px solid var(--border-color);border-radius:8px;background:var(--bg-primary);color:var(--text-secondary);text-decoration:none;cursor:pointer;transition:all .2s;font-weight:500;width:auto;height:auto}.reader-actions .bookmark-btn:hover,.reader-actions .share-btn:hover,.original-link-btn:hover{border-color:var(--accent-color);background:var(--accent-color);color:#fff}.reader-actions .bookmark-btn.bookmarked{background:var(--accent-color);border-color:var(--accent-color);color:#fff}@media(max-width:768px){.reader-layout{grid-template-columns:1fr;gap:1rem}.reader-header{padding:1.5rem 1.5rem 1rem}.reader-title{font-size:1.5rem}.reader-content{padding:0 1.5rem 1.5rem}.reader-footer{padding:1.5rem}.reader-actions{flex-direction:column}.reader-image{height:250px}}@media(max-width:768px){.header{padding:1rem}.header h1{font-size:1.5rem}.header-actions{gap:.75rem}.header-bookmark{padding:.4rem .6rem;font-size:.8rem}.desktop-nav{display:none!important}.bottom-nav{display:flex!important}.main{padding:1rem 1rem 90px}.articles-grid{grid-template-columns:1fr;gap:1rem}.article-content{padding:1rem}.toast{top:10px;right:10px;left:10px;max-width:none}}.footer{text-align:center;padding:2rem;border-top:1px solid var(--border-color);background:var(--bg-primary);color:var(--text-tertiary);font-size:.9rem}.scroll-top{position:fixed;bottom:2rem;right:2rem;width:48px;height:48px;background:var(--accent-color);color:#fff;border:none;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px #00000026;transition:all .2s;z-index:1000}.scroll-top:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 6px 16px #0003}.refresh-indicator{position:fixed;top:70px;left:50%;transform:translate(-50%);background:var(--bg-primary);color:var(--text-secondary);padding:.5rem 1rem;border-radius:20px;box-shadow:0 2px 10px #0000001a;border:1px solid var(--border-color);z-index:1000;font-size:.9rem;display:flex;align-items:center;gap:.5rem}.refresh-spinner{width:16px;height:16px;border:2px solid var(--border-color);border-top:2px solid var(--accent-color);border-radius:50%;animation:spin .8s linear infinite}.bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;background:var(--bg-primary);border-top:1px solid var(--border-color);padding:.5rem;z-index:1000;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 -2px 10px #0000001a}.bottom-nav-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:.5rem;border-radius:8px;transition:all .2s ease;flex:1;min-height:60px}.bottom-nav-btn span{font-size:.65rem;margin-top:.25rem;font-weight:500}.bottom-nav-btn.active{color:var(--accent-color)}.bottom-nav-btn:hover{color:var(--accent-color);transform:scale(1.05)}.bottom-nav-btn:focus{outline:none}.bottom-nav-btn:active{outline:none}.toast{position:fixed;top:20px;right:20px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:8px;padding:1rem 1.5rem;box-shadow:0 4px 20px #00000026;z-index:1000;display:flex;align-items:center;gap:1rem;animation:slideIn .3s ease;max-width:300px}.toast-success{border-left:4px solid #10b981}.toast-error{border-left:4px solid #ef4444}.toast button{background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:.25rem;border-radius:4px;transition:background .2s}.toast button:hover{background:var(--bg-secondary)}.install-prompt{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1001;padding:2rem}.install-content{background:var(--bg-primary);border-radius:12px;padding:2rem;max-width:400px;text-align:center;animation:fadeIn .3s ease}.install-content h3{margin:0 0 1rem;color:var(--text-primary)}.install-content p{margin:0 0 2rem;color:var(--text-secondary);line-height:1.5}.install-actions{display:flex;gap:1rem;justify-content:center}.install-btn{background:var(--accent-color);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;cursor:pointer;font-weight:500;transition:background .2s}.install-btn:hover{background:var(--accent-hover)}.dismiss-btn{background:var(--bg-secondary);color:var(--text-secondary);border:1px solid var(--border-color);padding:.75rem 1.5rem;border-radius:8px;cursor:pointer;transition:all .2s}.dismiss-btn:hover{background:var(--border-color)}.load-more{text-align:center;margin:2rem 0}.load-more-btn{padding:1rem 2rem;background:var(--accent-color);color:#fff;border:none;border-radius:25px;font-weight:500;cursor:pointer;transition:background .2s}.load-more-btn:hover{background:var(--accent-hover)}.loading-more{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem;text-align:center}.spinner-small{width:24px;height:24px;border:3px solid var(--border-color);border-top:3px solid var(--accent-color);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:.5rem}@media(max-width:480px){.footer{padding:1rem 1rem 90px}.scroll-top{bottom:100px;right:1rem;width:44px;height:44px}.main{padding:1rem 1rem 100px}.search-section{flex-direction:row;gap:.5rem;padding:1rem}.bookmark-toggle .bookmark-text{display:none}.bookmark-toggle{min-width:44px;padding:.75rem;border-radius:50%}.article-header{flex-direction:column;align-items:flex-start}.article-actions{align-self:flex-end}.reader-layout{grid-template-columns:1fr}.reader-title{font-size:1.3rem}.reader-meta{flex-direction:column;gap:.5rem}.reader-header{padding:1rem 1rem .5rem}.reader-content{padding:0 1rem 1rem}.back-btn{font-size:.9rem}.bottom-nav-btn span{font-size:.55rem}.bottom-nav{padding:.25rem}.bottom-nav-btn{min-height:55px;padding:.4rem}.install-prompt{padding:1rem}.install-content{padding:1.5rem}.install-actions{flex-direction:column}}