/* ============================================
   深圳腾骏达科技 - 解决方案列表页样式
   ============================================ */

.main-layout { display: flex; gap: 2.5rem; padding: 2.5rem 0; }
.sidebar { flex: 0 0 250px; background: white; border-radius: 16px; padding: 1.5rem; box-shadow: 0 6px 18px rgba(0,0,0,0.03); position: sticky; top: 80px; align-self: flex-start; }
.sidebar h3 { font-size: 1.2rem; font-weight: 700; color: #003D7A; margin-bottom: 1rem; padding-bottom: 0.8rem; border-bottom: 2px solid #FF6600; }
.sidebar-category { margin-bottom: 1.2rem; }
.sidebar-category h4 { font-size: 0.95rem; font-weight: 600; color: #374151; margin-bottom: 0.5rem; cursor: pointer; display: flex; justify-content: space-between; }
.sidebar-category h4::after { content: '\25BE'; font-size: 0.7rem; transition: transform 0.2s; }
.sidebar-category.collapsed h4::after { transform: rotate(-90deg); }
.sidebar-category.collapsed .sidebar-sub { display: none; }
.sidebar-sub { padding-left: 0.8rem; }
.sidebar-sub a { display: block; padding: 0.4rem 0 0.4rem 0.8rem; font-size: 0.85rem; color: #6b7280; border-left: 2px solid transparent; transition: 0.15s; }
.sidebar-sub a:hover, .sidebar-sub a.active { color: #003D7A; border-left-color: #FF6600; background: #f0f4ff; font-weight: 500; }
.sidebar-contact { margin-top: 2rem; padding-top: 1.5rem; border-top: 2px solid #eef3fa; }
.sidebar-contact h4 { font-size: 1rem; font-weight: 700; color: #003D7A; margin-bottom: 1rem; }
.sidebar-contact p { font-size: 0.85rem; color: #4b5563; margin-bottom: 0.6rem; }
.sidebar-contact strong { color: #FF6600; }
.content-area { flex: 1; min-width: 0; }
.filter-tags { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-bottom: 2rem; padding: 1rem 1.5rem; background: white; border-radius: 12px; box-shadow: 0 4px 12px rgba(0,0,0,0.02); }
.filter-tag { padding: 0.4rem 1rem; border-radius: 20px; font-size: 0.85rem; cursor: pointer; transition: 0.2s; background: #f3f4f6; color: #374151; }
.filter-tag:hover, .filter-tag.active { background: #003D7A; color: white; }
.solution-grid-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.solution-card-item { background: white; border-radius: 16px; overflow: hidden; box-shadow: 0 8px 20px rgba(0,0,0,0.04); transition: transform 0.3s, box-shadow 0.3s; cursor: pointer; display: block; }
.solution-card-item:hover { transform: translateY(-6px); box-shadow: 0 16px 30px rgba(0,0,0,0.1); }
.solution-card-img { width: 100%; height: 200px; object-fit: cover; transition: transform 0.4s; }
.solution-card-item:hover .solution-card-img { transform: scale(1.05); }
.solution-card-info { padding: 1.2rem; }
.solution-card-info h4 { font-size: 1.05rem; font-weight: 700; color: #003D7A; margin-bottom: 0.5rem; }
.solution-card-info p { font-size: 0.85rem; color: #6b7280; line-height: 1.5; margin-bottom: 0.8rem; }
.solution-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.solution-tag { display: inline-block; background: #f0f4ff; color: #003D7A; padding: 0.2rem 0.8rem; border-radius: 20px; font-size: 0.75rem; font-weight: 500; }
.pagination { display: flex; justify-content: center; gap: 0.5rem; margin-top: 2rem; flex-wrap: wrap; }
.pagination a { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; padding: 0 0.5rem; border-radius: 8px; font-size: 0.9rem; cursor: pointer; transition: 0.2s; background: white; color: #374151; border: 1px solid #e5e7eb; }
.pagination a:hover { background: #003D7A; color: white; border-color: #003D7A; }
.pagination a.active { background: #003D7A; color: white; border-color: #003D7A; font-weight: 700; }
.pagination a.disabled { opacity: 0.4; cursor: not-allowed; pointer-events: none; }
@media (max-width: 992px) { .main-layout { flex-direction: column; } .sidebar { position: static; } .solution-grid-list { grid-template-columns: 1fr; } }