.tools-page{gap:24px;max-width:1400px;margin:0 auto;padding:24px 20px;display:flex}.tools-sidebar{scrollbar-width:thin;scrollbar-color:#e5e7eb transparent;flex-shrink:0;width:220px;height:calc(100vh - 120px);position:sticky;top:80px;overflow-y:auto}.tools-sidebar::-webkit-scrollbar{width:4px}.tools-sidebar::-webkit-scrollbar-track{background:0 0}.tools-sidebar::-webkit-scrollbar-thumb{background:#e5e7eb;border-radius:2px}.tools-sidebar::-webkit-scrollbar-thumb:hover{background:#d1d5db}.sidebar-nav{flex-direction:column;gap:4px;display:flex}.sidebar-item{color:var(--text-body);cursor:pointer;border-radius:8px;align-items:center;padding:10px 12px;font-size:.8125rem;text-decoration:none;transition:all .2s;display:flex}.sidebar-item:hover{background:var(--bg-secondary);color:var(--primary)}.sidebar-item.active{color:#7c3aed;background:#f3f0ff;font-weight:500}.sidebar-icon{width:16px;height:16px;margin-right:8px}.sidebar-divider{background:var(--border);height:1px;margin:8px 0}.sidebar-children{border-left:1px solid var(--border);flex-direction:column;gap:2px;margin-left:16px;padding-left:12px;display:none}.sidebar-children.show{display:flex}.sidebar-child{color:var(--text-muted);cursor:pointer;border-radius:6px;padding:8px 12px;font-size:.75rem;text-decoration:none;transition:all .2s}.sidebar-child:hover{color:var(--primary)}.sidebar-child.active{color:#7c3aed;font-weight:500}.expand-icon{width:16px;height:16px;margin-left:auto;transition:transform .2s}.expand-icon.rotated{transform:rotate(180deg)}.tools-main{flex:1;min-width:0;padding-left:12px}.tools-search{margin-bottom:24px}.tools-search-box{max-width:420px;position:relative}.tools-search-input{border:1px solid var(--border);background:#fff;border-radius:8px;outline:none;width:100%;padding:10px 14px 10px 36px;font-size:.8125rem}.tools-search-input:focus{border-color:var(--primary)}.tools-search-icon{width:16px;height:16px;color:var(--text-muted);position:absolute;top:50%;left:12px;transform:translateY(-50%)}.fixed-section{margin-bottom:40px;scroll-margin-top:100px}.section-badge{border-radius:20px;align-items:center;gap:6px;margin-bottom:16px;padding:6px 14px;font-size:.75rem;font-weight:500;display:inline-flex}.badge-icon{width:14px;height:14px}.badge-hot{color:#fff;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%)}.badge-new{color:#fff;background:linear-gradient(135deg,#43e97b 0%,#38f9d7 100%)}.tools-grid{grid-template-columns:repeat(4,minmax(0,1fr));align-items:start;gap:16px;margin-bottom:24px;display:grid}.tools-grid .loading,.tools-grid .error{grid-column:1/-1}.tool-card-with-icon{border:1px solid var(--border);cursor:pointer;box-sizing:border-box;background:#fff;border-radius:12px;align-items:center;gap:12px;height:80px;padding:12px;text-decoration:none;transition:all .2s;display:flex;overflow:hidden}.tool-card-with-icon:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000001a}.tool-icon-img{color:#fff;border-radius:14px;flex-shrink:0;justify-content:center;align-items:center;width:64px;height:64px;font-size:1.5rem;font-weight:600;display:flex;overflow:hidden}.tool-icon-img img{object-fit:cover;border-radius:12px;width:100%;height:100%}.tool-info-compact{flex:1;min-width:0}.tool-title-compact{color:var(--text-main);white-space:nowrap;text-overflow:ellipsis;margin-bottom:4px;font-size:.875rem;font-weight:600;overflow:hidden}.tool-desc-compact{color:var(--text-muted);-webkit-line-clamp:2;-webkit-box-orient:vertical;height:2.8em;font-size:.75rem;line-height:1.4;display:-webkit-box;overflow:hidden}.category-section{margin-bottom:40px;scroll-margin-top:100px}.category-header{align-items:center;gap:8px;margin-bottom:12px;display:flex}.category-icon{width:16px;height:16px}.category-title{color:var(--text-main);font-size:1rem;font-weight:600}.category-header-wrapper{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.subcategory-tags{border-bottom:1px solid var(--border);flex-wrap:wrap;gap:8px;margin-bottom:16px;padding-bottom:12px;display:flex}.subcategory-tag{cursor:pointer;border:1px solid var(--border);color:var(--text-muted);background:#fff;border-radius:16px;padding:4px 12px;font-size:.75rem;transition:all .2s}.subcategory-tag:hover{border-color:var(--primary);color:var(--primary)}.subcategory-tag.active{background:var(--primary);color:#fff;border-color:var(--primary)}.subcategory-meta{color:var(--text-muted);margin:0 0 12px;font-size:.75rem}.view-more{color:var(--text-muted);white-space:nowrap;font-size:.75rem;text-decoration:none}.view-more:hover{color:var(--primary)}.loading{text-align:center;color:var(--text-muted);padding:48px 0}@media (max-width:1200px){.tools-grid{grid-template-columns:repeat(3,1fr)}}@media (max-width:900px){.tools-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.tools-page{flex-direction:column}.tools-sidebar{width:100%;height:auto;position:static}.tools-main{padding-left:0}}