/* ==================== 知识库分类页变量 ==================== */
:root {
    --dc-primary: #2D7AF1;
    --dc-primary-dark: #1E5FC7;
    --dc-primary-light: #EBF5FF;
    --dc-secondary: #FF6B35;
    --dc-success: #22C55E;
    --dc-warning: #F59E0B;
    --dc-danger: #EF4444;
    --dc-text-dark: #1F2937;
    --dc-text-gray: #6B7280;
    --dc-text-light: #9CA3AF;
    --dc-border: #E5E7EB;
    --dc-bg-gray: #F9FAFB;
    --dc-shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --dc-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    --dc-shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --dc-radius: 12px;
    --dc-radius-sm: 8px;
}

/* ==================== 页面背景 ==================== */
.dc-page-wrapper { background: var(--dc-bg-gray); min-height: 100vh; }
@media (min-width: 768px) { .dc-page-wrapper { padding-top: 80px; } }

/* ==================== 面包屑导航 ==================== */
.dc-breadcrumb { max-width: 1280px; margin: 0 auto; padding: 16px 24px; }
.dc-breadcrumb-inner { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--dc-text-light); }
.dc-breadcrumb-inner a { color: var(--dc-text-gray); text-decoration: none; }
.dc-breadcrumb-inner a:hover { color: var(--dc-primary); }
.dc-breadcrumb-inner i { font-size: 10px; color: var(--dc-text-light); }

/* ==================== 分类导航 ==================== */
.dc-category-section { max-width: 1280px; margin: 0 auto 30px; padding: 0 24px; }
.dc-category-grid { display: flex; flex-wrap: wrap; gap: 12px; background: #fff; padding: 24px; border-radius: var(--dc-radius); box-shadow: var(--dc-shadow-lg); }
.dc-category-grid .dc-category-item { flex: 1 1 calc(12.5% - 12px); min-width: calc(12.5% - 12px); }
@media (max-width: 1024px) { .dc-category-grid .dc-category-item { flex: 1 1 calc(25% - 12px); min-width: calc(25% - 12px); } }
@media (max-width: 600px) { .dc-category-grid .dc-category-item { flex: 1 1 calc(50% - 12px); min-width: calc(50% - 12px); } }
.dc-category-item { display: flex; flex-direction: column; align-items: center; padding: 16px 10px; border-radius: var(--dc-radius-sm); text-decoration: none; transition: all 0.3s; cursor: pointer; }
.dc-category-item:hover { background: var(--dc-primary-light); transform: translateY(-2px); }
.dc-category-item.active { background: var(--dc-primary-light); }
.dc-category-icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 10px; font-size: 22px; background: #DBEAFE; color: #2563EB; }
.dc-category-item span { font-size: 13px; color: var(--dc-text-dark); font-weight: 500; text-align: center; }

/* 分类图标颜色 */
.dc-category-item.cat-driver .dc-category-icon { background: #DBEAFE; color: #2563EB; }
.dc-category-item.cat-gpu .dc-category-icon { background: #FEE2E2; color: #DC2626; }
.dc-category-item.cat-printer .dc-category-icon { background: #D1FAE5; color: #059669; }
.dc-category-item.cat-network .dc-category-icon { background: #FEF3C7; color: #D97706; }
.dc-category-item.cat-audio .dc-category-icon { background: #FCE7F3; color: #DB2777; }
.dc-category-item.cat-usb .dc-category-icon { background: #E0E7FF; color: #4F46E5; }
.dc-category-item.cat-system .dc-category-icon { background: #F3E8FF; color: #9333EA; }
.dc-category-item.cat-faq .dc-category-icon { background: #F5F5F4; color: #57534E; }

/* ==================== 主内容区 ==================== */
.dc-main-content { max-width: 1280px; margin: 0 auto; padding: 0 24px 40px; }
.dc-content-grid { display: flex; gap: 30px; }
.dc-content-grid > .dc-content-main { flex: 1; }
.dc-content-grid > .dc-sidebar { flex: 0 0 320px; }
@media (max-width: 1024px) { .dc-content-grid { flex-direction: column; } .dc-content-grid > .dc-sidebar { flex: 1; } }

/* ==================== 页面标题 ==================== */
.dc-page-header { margin-bottom: 30px; }
.dc-page-title { font-size: 24px; font-weight: 700; color: var(--dc-text-dark); margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.dc-page-title i { color: var(--dc-primary); }
.dc-page-description { font-size: 14px; color: var(--dc-text-gray); margin-bottom: 20px; line-height: 1.8; }

/* ==================== 章节标题 ==================== */
.dc-section-title { font-size: 18px; font-weight: 600; color: var(--dc-text-dark); margin-bottom: 20px; padding-bottom: 10px; border-bottom: 2px solid var(--dc-primary); display: inline-block; }

/* ==================== 教程网格 ==================== */
.dc-tutorial-grid { display: flex; flex-wrap: wrap; gap: 20px; }
.dc-tutorial-grid .dc-tutorial-card { flex: 0 1 calc(33.333% - 20px); max-width: calc(33.333% - 20px); }
@media (max-width: 900px) { .dc-tutorial-grid .dc-tutorial-card { flex: 0 1 calc(50% - 20px); max-width: calc(50% - 20px); } }
@media (max-width: 600px) { .dc-tutorial-grid .dc-tutorial-card { flex: 0 1 100%; max-width: 100%; } }

.dc-tutorial-card { background: #fff; border-radius: var(--dc-radius); overflow: hidden; box-shadow: var(--dc-shadow-sm); transition: all 0.3s; border: 1px solid var(--dc-border); }
.dc-tutorial-card:hover { transform: translateY(-4px); box-shadow: var(--dc-shadow-lg); border-color: var(--dc-primary); }

.dc-card-thumb { height: 140px; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.dc-card-thumb img { width: 100%; height: 100%; object-fit: cover; }
.dc-card-thumb i { font-size: 44px; position: relative; z-index: 1; }

.dc-card-tag { position: absolute; top: 12px; left: 12px; padding: 4px 10px; border-radius: 4px; font-size: 11px; font-weight: 600; z-index: 2; background: rgba(37, 99, 235, 0.15); color: #2563EB; }
.dc-tag-blue { background: rgba(37, 99, 235, 0.15); color: #2563EB; }
.dc-tag-red { background: rgba(220, 38, 38, 0.15); color: #DC2626; }
.dc-tag-green { background: rgba(5, 150, 105, 0.15); color: #059669; }
.dc-tag-orange { background: rgba(217, 119, 6, 0.15); color: #D97706; }
.dc-tag-purple { background: rgba(147, 51, 234, 0.15); color: #9333EA; }
.dc-tag-pink { background: rgba(219, 39, 119, 0.15); color: #DB2777; }
.dc-tag-indigo { background: rgba(79, 70, 229, 0.15); color: #4F46E5; }

/* 缩略图颜色 */
.dc-thumb-blue { background: linear-gradient(135deg, #EFF6FF, #DBEAFE); }
.dc-thumb-blue i { color: #2563EB; }
.dc-thumb-red { background: linear-gradient(135deg, #FEF2F2, #FEE2E2); }
.dc-thumb-red i { color: #DC2626; }
.dc-thumb-green { background: linear-gradient(135deg, #ECFDF5, #D1FAE5); }
.dc-thumb-green i { color: #059669; }
.dc-thumb-orange { background: linear-gradient(135deg, #FFFBEB, #FEF3C7); }
.dc-thumb-orange i { color: #D97706; }
.dc-thumb-purple { background: linear-gradient(135deg, #FAF5FF, #F3E8FF); }
.dc-thumb-purple i { color: #9333EA; }
.dc-thumb-pink { background: linear-gradient(135deg, #FDF2F8, #FCE7F3); }
.dc-thumb-pink i { color: #DB2777; }

.dc-card-body { padding: 20px; }
.dc-card-body h3 { font-size: 15px; font-weight: 600; margin-bottom: 10px; line-height: 1.5; }
.dc-card-body h3 a { color: #1F2937 !important; text-decoration: none; }
.dc-card-body h3 a:hover { color: var(--dc-primary) !important; }
.dc-card-desc { font-size: 13px; color: var(--dc-text-light); line-height: 1.6; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.dc-card-footer { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--dc-text-light); }
.dc-card-footer span { display: flex; align-items: center; gap: 4px; }

/* ==================== 分页 ==================== */
.dc-pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 40px; flex-wrap: wrap; }
.dc-pagination a, .dc-pagination span { min-width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--dc-border); border-radius: var(--dc-radius-sm); text-decoration: none; color: var(--dc-text-gray); font-size: 14px; font-weight: 500; transition: all 0.3s; }
.dc-pagination a:hover { background: var(--dc-primary-light); border-color: var(--dc-primary); color: var(--dc-primary); }
.dc-pagination .active { background: var(--dc-primary); color: #fff; border-color: var(--dc-primary); }
.dc-pagination .disabled { opacity: 0.5; cursor: not-allowed; }
.dc-pagination .disabled:hover { background: transparent; border-color: var(--dc-border); color: var(--dc-text-gray); }

/* 跳页功能 */
.dc-page-jump { display: flex; align-items: center; gap: 8px; margin-left: 16px; padding-left: 16px; border-left: 1px solid var(--dc-border); }
.dc-page-jump label { font-size: 14px; color: var(--dc-text-gray); white-space: nowrap; }
.dc-page-jump input[type="number"] { width: 50px; height: 36px; border: 1px solid var(--dc-border); border-radius: var(--dc-radius-sm); padding: 0 10px; font-size: 14px; text-align: center; outline: none; transition: border-color 0.3s; }
.dc-page-jump input[type="number"]:focus { border-color: var(--dc-primary); }
.dc-page-jump button { height: 36px; padding: 0 14px; background: var(--dc-primary); color: #fff; border: none; border-radius: var(--dc-radius-sm); font-size: 14px; font-weight: 500; cursor: pointer; transition: background 0.3s; }
.dc-page-jump button:hover { background: var(--dc-primary-dark); }
@media (max-width: 768px) { .dc-page-jump { margin-left: 0; padding-left: 0; border-left: none; margin-top: 10px; width: 100%; justify-content: center; } }

/* ==================== 侧边栏 ==================== */
.dc-sidebar { display: flex; flex-direction: column; gap: 24px; }
.dc-widget { background: #fff; border-radius: var(--dc-radius); padding: 24px; box-shadow: var(--dc-shadow-sm); border: 1px solid var(--dc-border); }
.dc-widget-header { font-size: 16px; font-weight: 700; margin-bottom: 20px; display: flex; align-items: center; gap: 8px; padding-bottom: 12px; border-bottom: 2px solid var(--dc-primary); }
.dc-widget-header i { color: var(--dc-primary); }

/* 搜索框 */
.dc-search-box { display: flex; gap: 0; }
.dc-search-input { flex: 1; padding: 10px 12px; border: 1px solid #DDD; border-right: none; border-radius: 4px 0 0 4px; font-size: 13px; outline: none; transition: border-color 0.2s; }
.dc-search-input:focus { border-color: var(--dc-primary); }
.dc-search-input::placeholder { color: #999; }
.dc-search-btn { padding: 10px 14px; background: var(--dc-primary); border: 1px solid var(--dc-primary); border-radius: 0 4px 4px 0; color: #fff; cursor: pointer; transition: background 0.2s; }
.dc-search-btn:hover { background: #1E6AD4; }

/* 热门排行 */
.dc-rank-list { list-style: none; padding: 0; margin: 0; }
.dc-rank-item { padding: 14px 0; border-bottom: 1px solid var(--dc-border); display: flex; gap: 12px; align-items: flex-start; }
.dc-rank-item:last-child { border-bottom: none; padding-bottom: 0; }
.dc-rank-item:first-child { padding-top: 0; }
.dc-rank-num { width: 24px; height: 24px; border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; flex-shrink: 0; background: var(--dc-bg-gray); color: var(--dc-text-light); }
.dc-rank-item:nth-child(1) .dc-rank-num { background: linear-gradient(135deg, #EF4444, #DC2626); color: #fff; }
.dc-rank-item:nth-child(2) .dc-rank-num { background: linear-gradient(135deg, #F97316, #EA580C); color: #fff; }
.dc-rank-item:nth-child(3) .dc-rank-num { background: linear-gradient(135deg, #F59E0B, #D97706); color: #fff; }
.dc-rank-item a { color: var(--dc-text-dark); text-decoration: none; font-size: 14px; line-height: 1.5; transition: color 0.2s; }
.dc-rank-item a:hover { color: var(--dc-primary); }

/* 标签云 */
.dc-tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.dc-tag-cloud a { padding: 6px 14px; background: var(--dc-bg-gray); color: var(--dc-text-gray); text-decoration: none; border-radius: 20px; font-size: 13px; transition: all 0.3s; border: 1px solid transparent; }
.dc-tag-cloud a:hover { background: var(--dc-primary-light); color: var(--dc-primary); border-color: var(--dc-primary); }