/* CSS 变量由 class-frontend.php inject_theme_css_vars() 动态注入
 * 不要在此处硬编码 --zikao-primary，否则会覆盖主题全局色 */

/* 夜晚模式变量覆盖 */
.theme-dark :root,
html.dark :root,
.dark-theme :root {
    --zikao-bg-light: #2a2d35;
    --zikao-text-dark: #e6e8eb;
    --zikao-text-medium: #a9afb8;
    --zikao-text-light: #6b7280;
    --zikao-border: #3a3f48;
    --zikao-card-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.course-page {
    padding: 0;
}

.course-list-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 18px 24px;
    background: #fff;
    border-radius: var(--zikao-radius-sm);
    border: 1px solid var(--zikao-border);
}

.course-list-stats-left {
    font-size: 15px;
    color: var(--zikao-text-medium);
    font-weight: 500;
}

.course-list-stats-left strong {
    color: var(--zikao-primary);
    font-weight: 700;
}

.course-list-stats-right {
    display: flex;
    gap: 30px;
    font-size: 13px;
}

.course-stat-item {
    text-align: center;
}

.course-stat-num {
    font-size: 24px;
    font-weight: bold;
    color: var(--zikao-primary);
    display: block;
}

.course-stat-label {
    font-size: 12px;
    color: var(--zikao-text-light);
    margin-top: 2px;
}

.course-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

.course-card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    padding: 20px;
    transition: all 0.3s;
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.course-card .course-name {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.course-card .course-info {
    font-size: 13px;
    color: #666;
    margin-bottom: 4px;
}

.course-card .course-info:first-of-type {
    color: var(--zikao-primary);
    font-weight: 500;
}

.course-card .course-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 12px;
}

.course-card .course-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    background: #f0f7ff;
    color: var(--zikao-primary);
}

.course-card .course-tag.required {
    background: #fffbeb;
    color: #92400e;
}

.course-card .course-tag.elective {
    background: #ecfdf5;
    color: #059669;
}

.course-card .course-btn {
    margin-top: 12px;
    width: 100%;
}

.course-list-empty {
    text-align: center;
    padding: 80px 20px;
    color: var(--zikao-text-light);
    background: #fff;
    border-radius: var(--zikao-radius);
    border: 1px solid var(--zikao-border);
}

.course-list-empty-icon {
    font-size: 64px;
    margin-bottom: 20px;
    color: var(--zikao-primary);
    opacity: 0.2;
}

.course-list-empty-text {
    font-size: 16px;
    margin-bottom: 20px;
}

.course-list-empty-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--zikao-primary);
    color: #fff;
    text-decoration: none;
    border-radius: var(--zikao-radius-sm);
    font-weight: 600;
    transition: var(--zikao-transition);
}

.course-list-empty-btn:hover {
    background: var(--zikao-primary-dark);
}

.course-page .course-layout {
    display: flex !important;
    gap: 28px !important;
}

.course-page .course-sidebar {
    width: 240px !important;
    flex-shrink: 0 !important;
    background: #fff !important;
    border-radius: var(--zikao-radius) !important;
    box-shadow: var(--zikao-card-shadow) !important;
    overflow: hidden !important;
    position: sticky !important;
    top: 20px !important;
    border: 1px solid var(--zikao-border) !important;
}

.course-page .course-sidebar-header {
    background: linear-gradient(135deg, var(--zikao-primary) 0%, var(--zikao-primary-dark) 100%) !important;
    color: #fff !important;
    padding: 24px !important;
    text-align: center !important;
}

.course-page .course-sidebar-title {
    font-size: 18px !important;
    font-weight: bold !important;
    margin-bottom: 6px !important;
}

.course-page .course-sidebar-code {
    font-size: 14px !important;
    opacity: 0.9 !important;
}

.course-page .course-nav,
.course-page .course-nav li,
.wp-posts-content .course-page .course-nav,
.wp-posts-content .course-page .course-nav li {
    list-style: none !important;
    list-style-type: none !important;
    margin: 0 !important;
    padding: 0 !important;
    background: none !important;
}

.course-page .course-nav li::before,
.course-page .course-nav li::after,
.course-page .course-nav li::marker,
.wp-posts-content .course-page .course-nav li::before,
.wp-posts-content .course-page .course-nav li::marker {
    display: none !important;
    content: "" !important;
    -webkit-text-fill-color: transparent !important;
}

.course-page .course-nav-item {
    position: relative !important;
}

.course-page .course-nav-item a {
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    padding: 15px 24px !important;
    color: var(--zikao-text-dark) !important;
    text-decoration: none !important;
    font-size: 15px !important;
    transition: var(--zikao-transition) !important;
    border-left: 4px solid transparent !important;
}

.course-page .course-nav-item a:hover {
    background: var(--zikao-bg-light) !important;
    color: var(--zikao-primary) !important;
}

.course-page .course-nav-item.active a {
    background: var(--zikao-primary-light) !important;
    color: var(--zikao-primary) !important;
    border-left-color: var(--zikao-primary) !important;
    font-weight: 600 !important;
}

.course-page .course-content {
    flex: 1 !important;
    min-width: 0 !important;
}

.course-page .course-header {
    background: #fff !important;
    color: var(--zikao-text-dark) !important;
    padding: 32px !important;
    border-radius: var(--zikao-radius) !important;
    margin-bottom: 28px !important;
    border: 1px solid var(--zikao-border) !important;
    box-shadow: var(--zikao-card-shadow) !important;
}

.course-page .course-title-row {
    display: flex !important;
    align-items: center !important;
    gap: 16px !important;
    margin-bottom: 16px !important;
}

.course-page .course-title {
    font-size: 26px !important;
    font-weight: bold !important;
    margin: 0 !important;
}

.course-page .course-code {
    background: var(--zikao-primary-light) !important;
    padding: 6px 14px !important;
    border-radius: var(--zikao-radius-xs) !important;
    font-size: 14px !important;
    color: var(--zikao-primary) !important;
    font-weight: 700 !important;
}

.course-page .course-meta {
    display: flex !important;
    gap: 24px !important;
    font-size: 14px !important;
    color: var(--zikao-text-medium) !important;
    flex-wrap: wrap !important;
}

.course-page .course-meta span {
    display: flex !important;
    align-items: center !important;
    gap: 6px !important;
}

.course-page .course-warning {
    background: #fffbeb !important;
    border: 1px solid #fef3c7 !important;
    color: #92400e !important;
    padding: 14px 18px !important;
    border-radius: var(--zikao-radius-sm) !important;
    margin-top: 16px !important;
    font-size: 14px !important;
    display: flex !important;
    align-items: flex-start !important;
    gap: 10px !important;
}

.course-page .content-panel {
    background: #fff !important;
    border-radius: var(--zikao-radius) !important;
    box-shadow: var(--zikao-card-shadow) !important;
    overflow: hidden !important;
    border: 1px solid var(--zikao-border) !important;
    width: 100% !important;
}

.course-page .content-panel-header {
    background: var(--zikao-bg-light) !important;
    padding: 20px 28px !important;
    border-bottom: 1px solid var(--zikao-border) !important;
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    font-size: 18px !important;
    font-weight: bold !important;
    color: var(--zikao-text-dark) !important;
}

.course-page .content-panel-body {
    padding: 28px !important;
}

.course-page .paper-table {
    width: 100% !important;
    border-collapse: collapse !important;
    font-size: 14px !important;
}

.course-page .paper-table th {
    background: var(--zikao-bg-light) !important;
    padding: 14px 18px !important;
    text-align: left !important;
    font-weight: 600 !important;
    color: var(--zikao-text-medium) !important;
    border-bottom: 2px solid var(--zikao-border) !important;
}

.course-page .paper-table td {
    padding: 14px 18px !important;
    border-bottom: 1px solid var(--zikao-border) !important;
    color: var(--zikao-text-dark) !important;
}

.course-page .paper-table tbody tr:hover {
    background: var(--zikao-bg-light) !important;
}

.course-page .paper-btn {
    padding: 7px 16px !important;
    border-radius: var(--zikao-radius-xs) !important;
    font-size: 13px !important;
    text-decoration: none !important;
    transition: var(--zikao-transition) !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 6px !important;
    font-weight: 500 !important;
}

.course-page .paper-btn-preview {
    background: var(--zikao-primary) !important;
    color: #fff !important;
}

.course-page .paper-btn-preview:hover {
    background: var(--zikao-primary-dark) !important;
}

.course-page .paper-btn-download {
    background: var(--zikao-success) !important;
    color: #fff !important;
}

.course-page .paper-btn-download:hover {
    background: var(--zikao-success-dark) !important;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--zikao-border);
}

.pagination a, .pagination span {
    padding: 10px 16px;
    border-radius: var(--zikao-radius-xs);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
}

.pagination a {
    background: #fff;
    color: var(--zikao-text-dark);
    border: 1px solid var(--zikao-border);
}

.pagination a:hover {
    background: var(--zikao-bg-light);
    border-color: var(--zikao-primary);
    color: var(--zikao-primary);
}

.pagination-current {
    background: var(--zikao-primary);
    color: #fff;
    font-weight: bold;
}

.empty-list {
    text-align: center;
    padding: 50px;
    color: var(--zikao-text-light);
    font-size: 15px;
}

.outline-content {
    line-height: 1.8;
}

.outline-content h3 {
    color: var(--zikao-primary);
    margin: 20px 0 12px;
    font-size: 16px;
}

.outline-content p {
    margin: 10px 0;
}

.outline-content ul {
    padding-left: 20px;
    margin: 10px 0;
}

.outline-content li {
    margin: 6px 0;
}

.outline-actions {
    display: flex;
    gap: 14px;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--zikao-border);
}

.outline-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--zikao-radius-sm);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: var(--zikao-transition);
}

.outline-btn-preview {
    background: var(--zikao-primary);
    color: #fff;
}

.outline-btn-preview:hover {
    background: var(--zikao-primary-dark);
}

.outline-btn-download {
    background: var(--zikao-success);
    color: #fff;
}

.outline-btn-download:hover {
    background: #16a34a;
}

/* ============ 多教材/考纲堆叠卡片样式 ============ */
.zikao-section-tip {
    background: rgba(51, 112, 255, 0.06);
    border: 1px solid rgba(51, 112, 255, 0.15);
    color: #3370ff;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.zikao-outline-card {
    border: 1px solid #ebeef5;
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 16px;
    background: #fff;
    transition: box-shadow 0.2s;
}

.zikao-outline-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

.zikao-outline-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #1f2329;
}

.zikao-book-card {
    border: 1px solid #ebeef5;
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 16px;
    background: #fff;
    transition: box-shadow 0.2s;
}

.zikao-book-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

.zikao-book-card:last-child {
    margin-bottom: 0;
}

.zikao-province-tag {
    display: inline-block;
    padding: 2px 8px !important;
    border-radius: 4px !important;
    font-size: 12px !important;
    font-weight: 500 !important;
    line-height: 1.5;
    cursor: help;
    box-sizing: border-box;
}

.zikao-province-tag--national {
    /* 全国通用：绿色 */
    background: rgba(82, 196, 26, 0.1) !important;
    color: #52c41a !important;
}

.zikao-province-tag--province {
    /* 指定省份：蓝色 */
    background: rgba(51, 112, 255, 0.1) !important;
    color: #3370ff !important;
}

/* 内部 book-card 样式微调：去掉外层阴影和边距，因为外层 zikao-book-card 已有 */
.zikao-book-card .book-card {
    box-shadow: none;
    background: transparent;
    padding: 0;
    margin-bottom: 16px;
}

.book-detail {
    max-width: 900px;
}

.book-card {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    margin-bottom: 20px;
}

.book-cover-box {
    width: 200px;
    height: 200px;
    background: var(--zikao-bg-light);
    border-radius: var(--zikao-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    flex-shrink: 0;
}

.book-cover-box img {
    max-width: 100%;
    max-height: 100%;
    object-fit: cover;
}

.book-cover-icon {
    font-size: 48px;
}

.book-card-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.book-card-title {
    font-size: 20px;
    font-weight: bold;
    color: var(--zikao-text-dark);
    margin-bottom: 12px;
}

.book-card-meta {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px 20px;
    font-size: 14px;
    color: var(--zikao-text-medium);
    margin-bottom: 16px;
    padding: 12px;
    background: #f5f7fa;
    border-radius: var(--zikao-radius-sm);
}

.book-card-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.book-card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
    padding: 16px 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.book-card-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--zikao-radius-xs);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: var(--zikao-transition);
}

.book-card-btn-primary {
    background: var(--zikao-primary);
    color: #fff;
}

.book-card-btn-primary:hover {
    background: var(--zikao-primary-dark);
}

.book-card-btn-preview {
    background: var(--zikao-primary);
    color: #fff;
}

.book-card-btn-preview:hover {
    background: var(--zikao-primary-dark);
}

.book-card-btn-ebook {
    background: #c4a47b;
    color: #fff;
}

.book-card-btn-ebook:hover {
    background: #b3926a;
}

.book-section {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--zikao-border);
}

.book-section-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--zikao-text-dark);
    margin: 0 0 14px 0;
    padding-left: 14px;
    border-left: 4px solid var(--zikao-primary);
}

.book-section-content {
    font-size: 15px;
    line-height: 1.85;
    color: var(--zikao-text-dark);
    word-wrap: break-word;
}

.book-section-content * {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif !important;
}

.book-section-content p[style],
.book-section-content span[style],
.book-section-content strong[style],
.book-section-content em[style],
.book-section-content h2[style],
.book-section-content h3[style],
.book-section-content h4[style],
.book-section-content li[style],
.book-section-content blockquote[style] {
    /* 保留字体、颜色、加粗等富文本格式，仅重置可能破坏布局的样式 */
    text-align: inherit !important;
    text-indent: inherit !important;
    height: auto !important;
    width: auto !important;
    float: none !important;
    position: static !important;
    display: block !important;
}

.book-section-content p {
    margin: 0 0 14px 0;
    font-size: 15px;
    line-height: 1.85;
}

.book-section-content h2 {
    font-size: 19px;
    font-weight: 500;
    color: inherit;
    margin: 24px 0 12px 0;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--zikao-border);
    line-height: 1.4;
}
.book-section-content h2[style] {
    font-size: inherit;
    color: inherit;
    border-bottom: none;
    padding-bottom: inherit;
}

.book-section-content h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--zikao-text-dark);
    margin: 20px 0 10px 0;
    padding-left: 12px;
    border-left: 4px solid var(--zikao-primary);
    line-height: 1.4;
}
.book-section-content h3[style] {
    font-size: inherit;
    color: inherit;
    border-left: none;
    padding-left: inherit;
}

.book-section-content h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--zikao-text-medium);
    margin: 14px 0 8px 0;
    line-height: 1.4;
}
.book-section-content h4[style] {
    font-size: inherit;
    color: inherit;
}

.book-section-content ul,
.book-section-content ol {
    margin: 0 0 14px 0;
    padding-left: 30px;
    font-size: 15px;
    line-height: 1.85;
}

.book-section-content li {
    margin: 6px 0;
}

.book-section-content a {
    color: var(--zikao-primary);
    text-decoration: none;
    border-bottom: 1px dashed var(--zikao-primary);
}

.book-section-content a:hover {
    color: var(--zikao-primary-dark);
    border-bottom-style: solid;
}

.book-section-content strong,
.book-section-content b {
    font-weight: 600;
    color: var(--zikao-text-dark);
}
.book-section-content strong[style],
.book-section-content b[style] {
    color: inherit;
}

.book-section-content em,
.book-section-content i {
    font-style: italic;
    color: var(--zikao-text-medium);
}
.book-section-content em[style],
.book-section-content i[style] {
    color: inherit;
}

.book-section-content blockquote {
    margin: 14px 0;
    padding: 12px 20px;
    background: var(--zikao-bg-light);
    border-left: 4px solid var(--zikao-primary);
    color: var(--zikao-text-medium);
    font-size: 14px;
    line-height: 1.75;
}

.book-section-content blockquote p {
    margin: 0;
}

.book-section-content br {
    line-height: 1.85;
}

.book-catalog {
    background: var(--zikao-bg-light);
    padding: 24px 28px;
    border-radius: var(--zikao-radius-sm);
    border: 1px solid var(--zikao-border);
}

.book-catalog .book-section-content h2 {
    color: var(--zikao-text-dark);
    margin: 24px 0 12px;
    font-size: 17px;
    font-weight: 600;
}

.book-catalog .book-section-content h3 {
    color: var(--zikao-text-dark);
    font-weight: 500;
    margin: 12px 0 8px;
    font-size: 15px;
    padding-left: 16px;
}

.book-catalog .book-section-content p {
    color: var(--zikao-text-medium);
    font-size: 14px;
    margin: 8px 0;
}

/* ===== 智能排版层级样式 ===== */
.book-catalog .book-section-content h2 {
    border-left: 4px solid var(--zikao-primary, #3370ff);
    padding-left: 12px !important;
    padding-bottom: 6px;
    border-bottom: 1px dashed var(--zikao-border, #e1e4e8);
}

.book-catalog .book-section-content h4 {
    color: var(--zikao-text-dark);
    font-weight: 500;
    margin: 10px 0 6px;
    font-size: 14px;
    padding-left: 32px;
    position: relative;
}
.book-catalog .book-section-content h4::before {
    content: '●';
    position: absolute;
    left: 16px;
    color: var(--zikao-primary, #3370ff);
    font-size: 8px;
    top: 4px;
}

.book-catalog .book-section-content p.cat-l4 {
    padding-left: 48px;
    color: var(--zikao-text-light, #888);
    font-size: 13px;
    margin: 4px 0;
    position: relative;
}
.book-catalog .book-section-content p.cat-l4::before {
    content: '◦';
    position: absolute;
    left: 32px;
    color: var(--zikao-text-light, #aaa);
}

.book-catalog .book-section-content p.cat-l5 {
    padding-left: 64px;
    color: var(--zikao-text-light, #999);
    font-size: 13px;
    margin: 4px 0;
    position: relative;
}
.book-catalog .book-section-content p.cat-l5::before {
    content: '·';
    position: absolute;
    left: 48px;
    color: var(--zikao-text-light, #bbb);
    font-weight: bold;
}

.book-tabs {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--zikao-border);
}

.book-tabs-nav {
    display: flex;
    border-bottom: 2px solid var(--zikao-border);
    margin-bottom: 24px;
    gap: 6px;
}

.book-tab-nav {
    padding: 12px 24px;
    color: var(--zikao-text-medium);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: var(--zikao-transition);
    cursor: pointer;
    border-radius: var(--zikao-radius-xs) var(--zikao-radius-xs) 0 0;
}

.book-tab-nav:hover {
    color: var(--zikao-primary);
    background: var(--zikao-bg-light);
}

.book-tab-nav.active {
    color: var(--zikao-primary);
    border-bottom-color: var(--zikao-primary);
    background: var(--zikao-bg-light);
}

.book-tabs-content {
    min-height: 200px;
}

.book-tab-content {
    display: none;
}

.book-tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.book-empty {
    color: var(--zikao-text-light);
    text-align: center;
    padding: 50px 0;
    font-size: 15px;
}

.book-content-pagination {
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px dashed var(--zikao-border);
    text-align: center;
}

.book-content-pagination .pagination-label {
    color: var(--zikao-text-light);
    font-size: 13px;
    margin-right: 10px;
}

.book-content-pagination a {
    display: inline-block;
    min-width: 34px;
    height: 34px;
    line-height: 34px;
    padding: 0 10px;
    margin: 0 4px;
    color: var(--zikao-text-medium);
    background: var(--zikao-bg-light);
    border-radius: var(--zikao-radius-xs);
    text-decoration: none;
    font-size: 14px;
}

/* ============ 自考档案通用标签（跨专业/已通过） 亮色 ============ */
.zikao-tag {
    display: inline-block;
    padding: 2px 8px !important;
    border-radius: 4px !important;
    font-size: 12px !important;
    font-weight: 500 !important;
    line-height: 1.5;
    cursor: help;
    box-sizing: border-box;
    vertical-align: middle;
    margin-left: 4px;
}

/* 跨专业标签：蓝色系（与省份指定标签保持一致的蓝色，10% 透明度背景） */
.zikao-tag--cross {
    background: rgba(51, 112, 255, 0.1) !important;
    color: #3370ff !important;
}

/* 已通过标签：绿色系（与全国通用标签保持一致的绿色，10% 透明度背景） */
.zikao-tag--passed {
    background: rgba(82, 196, 26, 0.1) !important;
    color: #52c41a !important;
}

/* 必考标签：红色系（danger 主题色，10% 透明度背景） */
.zikao-tag--required {
    background: rgba(229, 57, 53, 0.1) !important;
    color: #e53935 !important;
    cursor: default;
}

/* 选考标签：绿色系（success 稍深的绿色，10% 透明度背景，与通过区分开） */
.zikao-tag--optional {
    background: rgba(67, 160, 71, 0.1) !important;
    color: #43a047 !important;
    cursor: default;
}

/* 建议报考标签：深蓝色系（primary 主题色，10% 透明度背景） */
.zikao-tag--recommend {
    background: rgba(24, 144, 255, 0.1) !important;
    color: #1890ff !important;
    cursor: default;
}

/* 表格行级背景：跨专业灰化 */
table .zikao-row--cross td {
    background: #f5f5f5 !important;
}
table .zikao-row--cross:hover td {
    background: #ececec !important;
}

/* 表格行级背景：已通过绿化 */
table .zikao-row--passed td {
    background: #e8f5e9 !important;
}
table .zikao-row--passed:hover td {
    background: #c8e6c9 !important;
}

/* 标签+行背景一起时：避免优先级不够，提高特异性 */
.table .zikao-row--cross td,
.table .zikao-row--passed td {
    transition: background-color 0.15s ease;
}

/* 亮色：跨专业统计提示条（蓝色系） */
.zikao-cross-notice {
    background: rgba(51, 112, 255, 0.08);
    border: 1px solid rgba(51, 112, 255, 0.2);
    color: #3370ff;
}

/* 亮色：全通过庆祝提示条（绿色系） */
.zikao-allpassed-notice {
    background: rgba(82, 196, 26, 0.1);
    border: 1px solid rgba(82, 196, 26, 0.2);
    color: #52c41a;
}

.book-content-pagination a:hover {
    background: var(--zikao-primary);
    color: #fff;
}

.book-content-pagination a.active {
    background: var(--zikao-primary);
    color: #fff;
    font-weight: 600;
}

.exam-panel {
    padding: 50px;
}

.exam-actions {
    display: flex;
    flex-direction: column;
    gap: 18px;
    max-width: 320px;
}

.exam-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    padding: 18px 28px;
    border-radius: var(--zikao-radius-sm);
    text-decoration: none;
    font-size: 16px;
    font-weight: bold;
    transition: var(--zikao-transition);
}

.exam-btn-primary {
    background: var(--zikao-primary);
    color: #fff;
}

.exam-btn-primary:hover {
    background: var(--zikao-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(43, 108, 255, 0.3);
}

.exam-btn-secondary {
    background: #fff;
    color: var(--zikao-text-dark);
    border: 2px solid var(--zikao-border);
}

.exam-btn-secondary:hover {
    border-color: var(--zikao-primary);
    color: var(--zikao-primary);
}

.exam-stats {
    display: flex;
    gap: 24px;
    margin-top: 36px;
    padding-top: 36px;
    border-top: 1px solid var(--zikao-border);
}

.exam-stat-item {
    text-align: center;
    flex: 1;
}

.exam-stat-value {
    font-size: 32px;
    font-weight: bold;
    color: var(--zikao-primary);
}

.exam-stat-label {
    font-size: 14px;
    color: var(--zikao-text-medium);
    margin-top: 8px;
}

@media (max-width: 768px) {
    .course-layout {
        flex-direction: column;
    }
    
    .course-sidebar {
        width: 100%;
        position: static;
    }
    
    .course-nav-item a {
        padding: 14px 20px;
    }
    
    .course-title-row {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .course-meta {
        flex-wrap: wrap;
    }
    
    .book-info-grid {
        grid-template-columns: 1fr;
    }
    
    .book-cover-box {
        margin: 0 auto 18px;
    }
    
    .course-card-grid {
        grid-template-columns: 1fr;
    }
    
    .course-search-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .course-search-btn {
        align-self: stretch;
    }
    
    .course-list-stats {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .course-list-stats-right {
        gap: 20px;
    }
    
    .course-list-header {
        padding: 28px 20px;
    }
    
    .course-list-title {
        font-size: 24px;
    }
}