.questions-section{padding:48px 24px;background:#fff}.questions-grid{display:grid;grid-template-columns:1fr;gap:32px;max-width:1200px;margin:0 auto}@media (min-width:768px){.questions-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width:1024px){.questions-grid{grid-template-columns:repeat(3,1fr)}}.pagination{display:flex;justify-content:flex-end;align-items:center;gap:8px;max-width:1200px;margin:48px auto 0;padding:0 16px}.pagination-item{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:8px 12px;font-size:16px;color:#6b7280;background:#fff;border:1px solid #e5e7eb;border-radius:6px;text-decoration:none;cursor:pointer;transition:all .2s ease}.pagination-item:hover{color:#374151;background:#f9fafb;border-color:#d1d5db}.pagination-item.active{background-color:#00bebd;color:#fff;border-color:#00bebd}.pagination-item.active:hover{background-color:#00a8a7;border-color:#00a8a7}.pagination-ellipsis{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:8px 12px;font-size:16px;color:#6b7280}.pagination-next,.pagination-prev{padding:8px 16px;font-weight:500}.pagination-next:hover,.pagination-prev:hover{color:#00bebd;border-color:#00bebd}.article-page{padding:48px 24px;background:#fff;min-height:100vh}.article-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:column;gap:48px}@media (min-width:1024px){.article-container{flex-direction:row;align-items:flex-start;gap:64px}}.article-main{flex:1;min-width:0;max-width:800px}.article-title{font-size:32px;font-weight:700;color:#1a202c;line-height:1.3;margin:0 0 16px}@media (min-width:768px){.article-title{font-size:40px}}.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:24px;font-size:14px;color:#718096}.article-author{font-weight:500;color:#4a5568}.meta-separator{color:#cbd5e0}.article-date,.article-read-time{color:#a0aec0}.article-image{margin-bottom:32px;border-radius:12px;overflow:hidden}.article-image img{width:100%;height:auto;display:block}.article-content{font-size:18px;line-height:1.8;color:#4a5568}.article-content img{max-width:100%;height:auto}.article-content table{width:100%;border-collapse:collapse;margin:0 0 24px;font-size:15px}.article-content table td,.article-content table th{padding:10px 14px;border:1px solid #e2e8f0;text-align:left;vertical-align:top}.article-content table th{background:#f7fafc;font-weight:600;color:#2d3748}.article-content table tr:hover td{background:#f7fafc}.article-content p{margin:0 0 24px}.article-content h2{font-size:28px;font-weight:700;color:#1a202c;margin:48px 0 16px;padding-top:24px;border-top:1px solid #e2e8f0}.article-content h2:first-of-type{margin-top:32px;padding-top:0;border-top:none}.article-content h3{font-size:20px;font-weight:600;color:#2d3748;margin:32px 0 12px}.article-content ol,.article-content ul{margin:0 0 24px;padding-left:24px}.article-content li{margin-bottom:8px}.article-content a{color:#00bebd;text-decoration:none}.article-content a:hover{text-decoration:underline}.article-sidebar{display:none}@media (min-width:1024px){.article-sidebar{display:flex;flex-direction:column;flex-shrink:0;width:280px;position:sticky;top:24px;height:calc(100vh - 48px);overflow:hidden}}.sidebar-sticky{height:100%;display:flex;flex-direction:column}.toc-section{margin-bottom:0;flex:1;overflow-y:auto;min-height:0}.share-title,.toc-title{font-size:12px;font-weight:700;color:#a0aec0;text-transform:uppercase;letter-spacing:.1em;margin:0 0 16px;padding-bottom:12px;border-bottom:1px solid #e2e8f0}.toc-nav{display:flex;flex-direction:column;gap:8px}.toc-item{font-size:14px;color:#4a5568;text-decoration:none;border-radius:6px;transition:all .2s ease;display:block;line-height:1.4;padding:4px 8px}.toc-level-2{padding-left:20px;font-size:13px;color:#718096}.toc-item:hover{color:#00bebd;background-color:#f7fafc}.toc-item.active{color:#00bebd;background-color:#e6f9f9;font-weight:500}.share-section{padding-top:24px;border-top:1px solid #e2e8f0;flex-shrink:0;margin-top:16px}.share-buttons{display:flex;gap:12px;flex-wrap:wrap}.share-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:8px;background-color:#f7fafc;color:#4a5568;text-decoration:none;transition:all .2s ease}.share-btn:hover{background-color:#00bebd;color:#fff}.toc-bottom-sheet-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:998;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease}.toc-bottom-sheet-backdrop.active{opacity:1;visibility:visible}.toc-bottom-sheet{position:fixed;left:0;right:0;bottom:0;z-index:999;background:#fff;border-radius:20px 20px 0 0;max-height:60vh;display:flex;flex-direction:column;transform:translateY(100%);transition:transform .35s cubic-bezier(.32, .72, 0, 1);box-shadow:0 -4px 30px rgba(0,0,0,.12)}.toc-bottom-sheet.active{transform:translateY(0)}.toc-sheet-handle{width:36px;height:4px;background:#d1d5db;border-radius:2px;margin:10px auto 0;flex-shrink:0}.toc-sheet-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px 12px;flex-shrink:0}.toc-sheet-title{font-size:16px;font-weight:700;color:#1a202c;margin:0}.toc-sheet-close{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:8px;border:none;background:#f7fafc;color:#718096;cursor:pointer;transition:all .2s ease;-webkit-tap-highlight-color:transparent}.toc-sheet-close:active{background:#edf2f7}.toc-sheet-nav{padding:0 20px 24px;overflow-y:auto;-webkit-overflow-scrolling:touch;display:flex;flex-direction:column;gap:4px}.toc-sheet-item{display:block;padding:12px 12px;font-size:15px;line-height:1.4;color:#4a5568;text-decoration:none;border-radius:8px;transition:all .15s ease;-webkit-tap-highlight-color:transparent}.toc-sheet-level-2{padding-left:28px;font-size:14px;color:#718096}.toc-sheet-item:active{background:#f0fdfd;color:#00bebd}@media (min-width:1024px){.toc-bottom-sheet,.toc-bottom-sheet-backdrop{display:none}}@supports (padding-bottom:env(safe-area-inset-bottom)){.toc-sheet-nav{padding-bottom:calc(24px + env(safe-area-inset-bottom))}}