:root{--bg:#f5f7fa;--card-bg:#ffffff;--text:#2c3e50;--text-secondary:#909399;--text-muted:#b0b8c6;--border:#ebeef5;--shadow:0 2px 12px rgba(0, 0, 0, 0.04);--shadow-hover:0 8px 24px rgba(0, 0, 0, 0.08);--radius:12px;--radius-sm:8px;--primary:#409eff;--primary-light:#ecf5ff;--primary-dark:#337ecc;--orange:#e6a23c;--green:#009688;--red:#ff5722;--orange-light:#fdf6ec;--transition:all 0.2s ease;--font:-apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}.header{background:#fff;border-bottom:1px solid var(--border);box-shadow:0 1px 4px rgba(0,0,0,4%);position:sticky;top:0;z-index:100;min-height:60px}.header-inner{margin:0 auto;padding:0 20px;min-height:60px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between}.header-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.header-search-form{display:flex;align-items:center}.header-badges{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.header-badge{display:inline-flex;align-items:center;gap:5px;padding:5px 12px;border-radius:20px;font-size:12px;font-weight:500;white-space:nowrap;cursor:default}.header-badge i{font-size:11px}.header-badge.green{background:#f0fdf4;color:#16a34a}.header-badge.blue{background:#eff6ff;color:#2563eb}.header-badge.orange{background:#fff7ed;color:#ea580c}.logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:#303133;font-size:20px;font-weight:600;letter-spacing:.5px;flex-shrink:0}.logo i{color:var(--primary);font-size:24px}.search-wrap{display:flex;align-items:center;border:1px solid #dcdfe6;border-radius:20px;overflow:hidden;background:#fff;transition:var(--transition);width:280px;height:36px}.search-wrap:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(64,158,255,.1)}.search-wrap input{flex:1;border:none;outline:none;padding:0 14px;font-size:14px;color:var(--text);background:0 0;height:100%}.search-wrap input::placeholder{color:var(--text-muted)}.search-wrap button{background:var(--primary);border:none;color:#fff;width:36px;height:36px;border-radius:0 20px 20px 0;cursor:pointer;font-size:14px;display:flex;align-items:center;justify-content:center;transition:var(--transition);flex-shrink:0}.search-wrap button:hover{background:var(--primary-dark)}.main-container{margin:0 auto;padding:10px;display:flex;gap:20px;min-height:calc(100vh - 120px)}.sidebar{width:258px;flex-shrink:0;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:10px 0;height:fit-content;position:sticky;top:80px;border:1px solid var(--border)}.sidebar-title{font-size:14px;font-weight:600;color:#909399;padding:8px 20px 12px;letter-spacing:1px}.sidebar-nav{list-style:none;display:flex;flex-direction:column}.sidebar-nav li{cursor:pointer;padding:10px 20px;font-size:14px;color:#606266;transition:var(--transition);display:flex;align-items:center;gap:10px;position:relative;user-select:none;border-left:3px solid transparent}.sidebar-nav li i{width:18px;text-align:center;font-size:14px;color:#909399}.sidebar-nav li:hover{color:var(--primary);background:#f5f7fa}.sidebar-nav li:hover i{color:var(--primary)}.sidebar-nav li.active{color:var(--primary);background:var(--primary-light);font-weight:500;border-left-color:var(--primary)}.sidebar-nav li.active i{color:var(--primary)}.sidebar-nav li .count{margin-left:auto;font-size:12px;color:#c0c4cc;background:#f0f2f5;padding:2px 8px;border-radius:10px}.sidebar-nav li.active .count{background:#d9ecff;color:var(--primary)}.content{flex:1;min-width:0}.content-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.content-header h2{font-size:20px;font-weight:600;color:#303133;display:flex;align-items:center;gap:8px}.content-header h2 i{color:var(--orange)}.tool-count-badge{font-size:13px;color:#909399;background:#f4f4f5;padding:4px 12px;border-radius:20px;font-weight:400}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.tool-card{background:#fff;border-radius:var(--radius);padding:24px 20px 20px;cursor:pointer;transition:var(--transition);border:1px solid var(--border);position:relative;display:flex;flex-direction:column}.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#d4e4ff}.tool-card-header{display:flex;align-items:flex-start;gap:12px;margin-bottom:12px}.tool-icon-wrap{width:44px;height:44px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0;background:var(--primary-light);color:var(--primary)}.tool-card-info{flex:1;min-width:0}.tool-card-name{font-size:15px;font-weight:600;color:#303133;margin-bottom:4px;line-height:1.3}.tool-card-desc{font-size:12px;color:var(--text-secondary);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.tool-card-tags{display:flex;align-items:center;gap:6px;margin-top:auto;padding-top:12px;border-top:1px solid #f5f5f5;flex-wrap:wrap}.tag-category{font-size:11px;background:#f0f2f5;color:#909399;padding:3px 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i{font-size:14px!important;margin:0!important}}a{color:#3b82f6;text-decoration:none;transition:color .2s ease}a:hover{color:#1d4ed8}.header .logo:hover{color:#1e293b}.sidebar-nav a{color:inherit;display:flex;align-items:center;gap:8px;width:100%}.sidebar-nav a:hover{color:inherit}.tags-cloud{display:flex;flex-wrap:wrap;gap:8px;padding:5px}.tag-badge{display:inline-block;background:#f0f2f5;color:#606266;font-size:13px;padding:5px 14px;border-radius:20px;text-decoration:none;transition:all .25s ease;border:1px solid transparent;line-height:1.4}.tag-badge:hover{background:#ecf5ff;color:#409eff;border-color:#d9ecff;transform:translateY(-1px);box-shadow:0 4px 10px rgba(64,158,255,.15)}.tag-badge .tag-count{font-size:11px;opacity:.75;margin-left:3px}.tag-badge.tag-hot{background:#fef0f0;color:#f56c6c;border-color:#fde2e2}.tag-badge.tag-new{background:#f0f9eb;color:#67c23a;border-color:#e1f3d8}.tool-stats-bar{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap;padding:0 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