:root{--bg-primary: #1a1a1a;--bg-secondary: #222222;--bg-tertiary: #2a2a2a;--bg-hover: #2e2e2e;--border-primary: #2a2a2a;--border-secondary: #333333;--border-tertiary: #444444;--text-primary: #e8e8e8;--text-secondary: #b0b0b0;--text-tertiary: #888888;--text-quaternary: #666666;--accent-blue: #5ba3ff;--accent-green: #22c55e;--accent-red: #ef4444;--accent-amber: #f59e0b;--font-mono: "Share Tech", sans-serif;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%;background:var(--bg-primary);color:var(--text-primary);font-family:var(--font-mono)}::selection{background:#5ba3ff4d;color:#fff}.app{display:flex;flex-direction:column;height:100%}.header-bar{border-bottom:1px solid var(--border-primary);background:var(--bg-primary);flex-shrink:0}.header{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:14px 32px;width:100%}.header-left{display:flex;align-items:center;gap:10px;flex-shrink:0}.header-logo{width:24px;height:24px;color:var(--accent-blue)}.header-brand{display:flex;align-items:baseline;gap:6px}.header-name{font-family:var(--font-mono);font-size:15px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--text-primary)}.header-tag{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-blue)}.header-search{width:480px;display:flex;align-items:center;gap:8px;background:var(--bg-tertiary);border:1px solid var(--border-primary);border-radius:24px;padding:10px 18px;justify-self:center;transition:border-color .15s}.header-search:focus-within{border-color:var(--accent-blue)}.header-search svg{color:var(--text-quaternary);flex-shrink:0}.search-input{flex:1;background:none;border:none;outline:none;color:var(--text-primary);font-family:var(--font-mono);font-size:13px;letter-spacing:.02em}.search-input::placeholder{color:var(--text-quaternary)}.search-clear{background:none;border:none;color:var(--text-quaternary);cursor:pointer;padding:2px;display:flex;align-items:center}.search-clear:hover{color:var(--text-secondary)}.header-right{display:flex;align-items:center;gap:14px;flex-shrink:0}.header-link{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--text-quaternary);text-decoration:none;transition:color .15s;justify-self:end}.header-link:hover{color:var(--text-secondary)}.header-avatar{width:30px;height:30px;border-radius:50%;border:1px solid var(--border-secondary);transition:border-color .15s}.header-avatar:hover{border-color:var(--accent-blue)}.categories-bar{border-bottom:1px solid var(--border-primary);flex-shrink:0}.categories{display:flex;justify-content:center;gap:6px;padding:10px 32px;max-width:1200px;width:100%;margin:0 auto;overflow-x:auto;-webkit-overflow-scrolling:touch}.cat-pill{padding:5px 14px;border:1px solid var(--border-secondary);border-radius:20px;background:transparent;color:var(--text-tertiary);font-family:var(--font-mono);font-size:13px;cursor:pointer;transition:all .15s;white-space:nowrap}.cat-pill:hover{color:var(--text-secondary);border-color:var(--border-tertiary)}.cat-pill.active{color:var(--accent-blue);background:#5ba3ff1a;border-color:#5ba3ff4d}.main{flex:1;overflow-y:auto}.feed-container{max-width:1200px;margin:0 auto;padding:28px 32px}.feed{display:flex;flex-direction:column;gap:28px}.feed-loading{display:flex;align-items:center;gap:12px;padding:60px 0;justify-content:center;color:var(--text-quaternary);font-size:14px}.loading-pulse{width:8px;height:8px;border-radius:50%;background:var(--accent-blue);animation:pulse 1.2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.3;transform:scale(.8)}50%{opacity:1;transform:scale(1.2)}}.feed-empty{padding:80px 0;color:var(--text-quaternary);font-size:14px;text-align:center}.card-featured{cursor:pointer;border-radius:12px;overflow:hidden;border:1px solid var(--border-primary);background:var(--bg-secondary);transition:border-color .2s}.card-featured:hover{border-color:var(--border-secondary)}.card-featured-image{width:100%;height:340px;object-fit:cover;display:block}.card-featured-body{padding:20px 24px 24px}.card-featured-title{font-size:24px;font-weight:700;color:var(--text-primary);line-height:1.3;margin-bottom:8px}.card-featured-preview{font-size:15px;color:var(--text-tertiary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.card{cursor:pointer;border-radius:10px;overflow:hidden;border:1px solid var(--border-primary);background:var(--bg-secondary);transition:border-color .2s,transform .15s;display:flex;flex-direction:column}.card:hover{border-color:var(--border-secondary);transform:translateY(-2px)}.card-image{width:100%;height:160px;object-fit:cover;display:block}.card-body{padding:16px 18px 18px;flex:1;display:flex;flex-direction:column;gap:8px}.card-meta{display:flex;align-items:center;gap:8px}.card-category{font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent-blue)}.card-time{font-size:11px;color:var(--text-quaternary)}.card-title{font-size:15px;font-weight:600;color:var(--text-primary);line-height:1.35}.card-preview{font-size:13px;color:var(--text-quaternary);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}.card-read-more{font-family:var(--font-mono);font-size:11px;color:var(--accent-blue);letter-spacing:.03em}.article-page{max-width:720px;margin:0 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.news-h2{font-size:22px;font-weight:600;color:var(--text-primary);margin:28px 0 12px;line-height:1.3}.article-content .news-h3{font-size:17px;font-weight:600;color:var(--text-primary);margin:20px 0 8px}.article-content .news-h4{font-size:15px;font-weight:600;color:var(--text-secondary);margin:16px 0 6px}.article-content .news-p{font-size:15px;color:var(--text-secondary);margin-bottom:12px;line-height:1.8}.article-content .news-bullet{font-size:15px;color:var(--text-secondary);padding-left:16px;margin-bottom:6px;line-height:1.65}.article-content a{color:var(--accent-blue);text-decoration:none}.article-content a:hover{text-decoration:underline}.article-content strong{color:var(--text-primary)}@media(max-width:900px){.card-grid{grid-template-columns:repeat(2,1fr)}.card-featured-image{height:240px}}@media(max-width:600px){.header{padding:12px 16px;gap:10px}.header-name{display:none}.header-search{max-width:none}.categories{padding:8px 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