/**
 * News filters — child-theme chrome for /blogs/news.
 * Visual tokens match modown-aikb (paper / accent #c45c26).
 */

/* ===== 下拉筛选器系统样式 ===== */
.aikb-news-filters .dropdown-filter-system {
    margin-bottom: 20px;
    background: var(--aikb-surface, #fffdf9);
    border-radius: 12px;
    border: 1px solid var(--aikb-line, #e6dfd4);
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    overflow: visible;
}

/* 筛选结果统计信息 - 显示在搜索框后面 */
.aikb-news-filters .filter-results-info {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    font-size: 14px;
    white-space: nowrap;
    flex-shrink: 0;
}

.aikb-news-filters .results-stats {
    display: flex;
    align-items: center;
    gap: 8px;
}

.aikb-news-filters .results-count {
    font-size: 13px;
    font-weight: 400;
    color: #333;
}

/* 数字部分使用主题色并加粗 */
.aikb-news-filters .count-number {
    font-weight: 700;
    color: var(--aikb-accent, #c45c26);
}

.aikb-news-filters .filter-summary {
    font-size: 12px;
    color: #333;
    font-weight: 400;
}

/* 下拉筛选器行 */
.aikb-news-filters .dropdown-filters-row {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 16px;
    background: var(--aikb-surface-soft, #f6f3ee);
    flex-wrap: wrap;
    position: relative;
    z-index: 15;
    overflow: visible;
    border-radius: 0 0 8px 8px;
}

/* 当没有标签时，恢复完整圆角 */
.aikb-news-filters .dropdown-filter-system:not(:has(.active-filter-tags[style*="display: block"])) .dropdown-filters-row,
.aikb-news-filters .dropdown-filter-system:not(:has(.active-filter-tags:not([style*="display: none"]))) .dropdown-filters-row {
    border-radius: 8px;
}

/* 单个下拉筛选器 */
.aikb-news-filters .dropdown-filter {
    position: relative !important;
    min-width: 120px;
    flex: 1 1 0;
    max-width: none;
}

/* 统一筛选器容器 */
.aikb-news-filters .unified-filter {
    position: relative !important;
    width: 100%;
}

.aikb-news-filters .dropdown-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--aikb-surface, #fffdf9);
    border: 1px solid var(--aikb-line, #e6dfd4);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 13px;
    font-weight: 500;
    color: var(--aikb-ink, #1f2430);
    min-height: 36px;
}

.aikb-news-filters .dropdown-trigger:hover {
    border-color: var(--aikb-accent, #c45c26);
    box-shadow: 0 2px 8px rgba(196, 92, 38, 0.12);
}

.aikb-news-filters .dropdown-trigger[aria-expanded="true"] {
    border-color: var(--aikb-accent, #c45c26);
    background: #fff8f3;
    box-shadow: 0 0 0 3px rgba(196, 92, 38, 0.1);
}

.aikb-news-filters .dropdown-label {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.aikb-news-filters .dropdown-count {
    color: var(--aikb-accent, #c45c26);
    font-weight: 600;
    margin: 0 6px;
    font-size: 12px;
    display: inline-flex;
    align-items: center;
    line-height: 1;
}

.aikb-news-filters .dropdown-icon {
    position: relative;
    display: inline-block;
    flex: 0 0 20px;
    width: 20px;
    height: 20px;
    margin-left: 6px;
    color: var(--aikb-ink, #1f2430);
}

.aikb-news-filters .dropdown-icon::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 7px;
    height: 7px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: translate(-50%, -68%) rotate(45deg);
    transform-origin: center;
    transition: transform 0.22s ease;
}

.aikb-news-filters .dropdown-trigger[aria-expanded="true"] .dropdown-icon::before {
    transform: translate(-50%, -32%) rotate(225deg);
}

/* 下拉内容（性能优化：启用硬件加速） */
.aikb-news-filters .dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--aikb-surface, #fffdf9);
    border: 1px solid var(--aikb-line, #e6dfd4);
    border-top: none;
    border-radius: 0 0 6px 6px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    max-height: 300px;
    overflow-y: auto;
    display: none;
    min-width: 200px;
    /* 性能优化：启用硬件加速 */
    transform: translateZ(0);
    will-change: transform, opacity;
    backface-visibility: hidden;
}

.aikb-news-filters .dropdown-filter.active .dropdown-content {
    display: block;
}

/* 下拉背景遮罩 */
.aikb-news-filters .dropdown-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.3);
    display: none;
}

.aikb-news-filters .dropdown-filter.active ~ .dropdown-overlay {
    display: block;
}

.aikb-news-filters .dropdown-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--aikb-surface-soft, #f6f3ee);
    border-bottom: 1px solid var(--aikb-line, #e6dfd4);
}

.aikb-news-filters .dropdown-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--aikb-ink, #1f2430);
}

.aikb-news-filters .dropdown-actions {
    display: flex;
    gap: 4px;
}

.aikb-news-filters .btn-select-all,
.aikb-news-filters .btn-clear-group {
    background: var(--aikb-accent, #c45c26);
    color: white;
    border: none;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.aikb-news-filters .btn-select-all:hover {
    background: #a84d1f;
}

.aikb-news-filters .btn-clear-group {
    background: #8b7355;
}

.aikb-news-filters .btn-clear-group:hover {
    background: #6b5a45;
}

.aikb-news-filters .dropdown-options {
    padding: 4px 0;
    max-height: 240px;
    overflow-y: auto;
}

.aikb-news-filters .dropdown-option {
    display: flex;
    align-items: center;
    padding: 6px 12px;
    cursor: pointer;
    transition: background 0.2s ease;
    font-size: 12px;
}

.aikb-news-filters .dropdown-option:hover {
    background: var(--aikb-surface-soft, #f6f3ee);
}

.aikb-news-filters .dropdown-option input[type="checkbox"] {
    margin-right: 8px;
    accent-color: var(--aikb-accent, #c45c26);
}

.aikb-news-filters .dropdown-option input[type="checkbox"]:checked + .option-text {
    color: var(--aikb-accent, #c45c26);
    font-weight: 600;
}

.aikb-news-filters .option-text {
    flex: 1;
    color: var(--aikb-ink, #1f2430);
    transition: all 0.3s ease;
}

.aikb-news-filters .option-count {
    color: var(--aikb-muted, #6b7280);
    font-size: 11px;
    margin-left: 4px;
}

/* 1. 主要筛选下拉框 - 左边第一个 */
.aikb-news-filters .main-filter-dropdown {
    flex: 1 1 0;
    min-width: 150px;
    max-width: 200px;
    position: static !important; /* 改为static，让子元素自己定位 */
    overflow: visible !important; /* 确保下拉内容不被裁剪 */
}

/* 统一下拉内容 - 继承并覆盖基础dropdown-content样式（性能优化） */
.aikb-news-filters .unified-dropdown-content {
    position: absolute !important;
    top: 100% !important;
    left: 0 !important;
    right: auto !important;
    min-width: 800px;
    max-width: 1200px;
    max-height: 70vh;
    overflow-y: auto;
    margin-top: 4px;
    display: none !important; /* 默认隐藏 */
    transform: translateY(0) translateZ(0) !important; /* 桌面端不使用transform偏移，启用硬件加速 */
    /* 性能优化：启用硬件加速 */
    will-change: transform, opacity;
    backface-visibility: hidden;
}

/* 确保统一下拉内容正确定位 */
.aikb-news-filters .dropdown-filter.unified-filter {
    position: relative !important;
}

.aikb-news-filters .dropdown-filter.unified-filter .unified-dropdown-content {
    position: absolute !important;
    top: 100% !important;
    left: 0 !important;
    right: auto !important;
    width: 800px;
    min-width: 800px;
    max-width: 1200px;
}

/* 激活状态下显示统一下拉内容 */
.aikb-news-filters .dropdown-filter.active .unified-dropdown-content {
    display: block !important;
    transform: translateY(0) !important; /* 确保桌面端不使用移动端的transform偏移 */
}

.aikb-news-filters .unified-dropdown-options {
    padding: 0;
    display: flex;
    flex-direction: row;
    gap: 0;
}

/* 筛选分组样式 - 横向并排 */
.aikb-news-filters .filter-group-section {
    flex: 1;
    border-right: 1px solid var(--aikb-line, #e6dfd4);
    margin-bottom: 0;
    min-width: 0; /* 允许flex项目缩小 */
}

.aikb-news-filters .filter-group-section:last-child {
    border-right: none;
}

.aikb-news-filters .group-section-header {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 12px;
    background: var(--aikb-surface-soft, #f6f3ee);
    border-bottom: 1px solid var(--aikb-line, #e6dfd4);
    position: sticky;
    top: 0;
    z-index: 10;
    min-height: 50px;
}

.aikb-news-filters .group-section-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--aikb-ink, #1f2430);
    display: flex;
    align-items: center;
    gap: 4px;
    justify-content: center;
    text-align: center;
}

.aikb-news-filters .group-section-title i {
    color: var(--aikb-accent, #c45c26);
    font-size: 14px;
}

.aikb-news-filters .group-count {
    color: var(--aikb-accent, #c45c26);
    font-weight: 500;
    font-size: 12px;
}


/* 分组选项容器 - 固定2列网格布局 */
.aikb-news-filters .group-section-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
    padding: 8px 12px;
    background: var(--aikb-surface, #fffdf9);
    max-height: 60vh;
    overflow-y: auto;
}

/* 分组选项样式 - 2列网格优化 */
.aikb-news-filters .group-option {
    display: flex;
    align-items: flex-start;
    padding: 8px 10px;
    cursor: pointer;
    transition: background 0.2s ease;
    font-size: 12px;
    border-radius: 4px;
    border: 1px solid transparent;
    white-space: normal;
    word-wrap: break-word;
    word-break: break-word;
    min-height: 36px;
    line-height: 1.4;
}

.aikb-news-filters .group-option:hover {
    background: var(--aikb-surface-soft, #f6f3ee);
    border-color: var(--aikb-line, #e6dfd4);
}

.aikb-news-filters .group-option input[type="checkbox"] {
    margin-right: 8px;
    accent-color: var(--aikb-accent, #c45c26);
    margin-top: 2px;
    flex-shrink: 0;
}

.aikb-news-filters .group-option input[type="checkbox"]:checked + .option-text {
    color: var(--aikb-accent, #c45c26);
    font-weight: 600;
}

.aikb-news-filters .group-option .option-text {
    flex: 1;
    color: var(--aikb-ink, #1f2430);
    transition: all 0.3s ease;
    white-space: normal;
    word-wrap: break-word;
    word-break: break-word;
    line-height: 1.4;
    min-width: 0;
}

.aikb-news-filters .group-option .option-count {
    color: var(--aikb-muted, #6b7280);
    font-size: 11px;
    margin-left: 4px;
    flex-shrink: 0;
    white-space: nowrap;
}

/* 2. 排序下拉 - 中间第二个 */
.aikb-news-filters .sort-filter {
    flex: 1 1 0;
    min-width: 150px;
    max-width: 200px;
}

.aikb-news-filters .clear-all-filter {
    min-width: 80px;
}

.aikb-news-filters .confirm-filter {
    min-width: 80px;
}

/* 确认筛选按钮样式 */
.aikb-news-filters .btn-confirm-filter {
    background: var(--aikb-accent, #c45c26);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
    min-height: 36px;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
}

/* 下拉头部内的确认按钮紧凑样式 */
.aikb-news-filters .dropdown-header .btn-confirm-filter {
    padding: 6px 12px;
    min-height: 32px;
}

.aikb-news-filters .btn-reset-filter {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 32px;
    padding: 6px 12px;
    border: 1px solid var(--aikb-line, #e6dfd4);
    border-radius: 6px;
    background: transparent;
    color: var(--aikb-muted, #6b7280);
    font-size: 13px;
    font-weight: 500;
    line-height: 1;
    cursor: pointer;
    transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease, opacity 0.2s ease;
}

.aikb-news-filters .btn-reset-filter:hover:not(:disabled) {
    border-color: rgba(196, 92, 38, 0.35);
    background: rgba(196, 92, 38, 0.06);
    color: var(--aikb-accent, #c45c26);
}

.aikb-news-filters .btn-reset-filter:disabled {
    opacity: 0.42;
    cursor: default;
}

.aikb-news-filters .btn-confirm-filter:hover {
    background: #a84d1f;
    box-shadow: none;
}

.aikb-news-filters .btn-confirm-filter:active {
    background: #934419;
    box-shadow: none;
}

.aikb-news-filters .btn-confirm-filter i {
    font-size: 14px;
}

/* 3. 搜索筛选器容器 - 右边第三个，占据最大剩余空间 */
.aikb-news-filters .search-filter {
    display: flex;
    align-items: center;
    gap: 0;
    flex: 1 1 auto;
    min-width: 200px;
    z-index: auto;
}

/* 当有筛选结果信息时，自动调整搜索框宽度 */
.aikb-news-filters .search-filter:has(+ .filter-results-info) {
    flex: 1 1 auto;
    min-width: 180px;
}

/* 搜索框：与「资料下载」栏目搜索框共用同一视觉规格 */
.aikb-news-filters .search-input-wrapper.site-search-form {
    position: relative;
    display: flex;
    align-items: center;
    flex: 1 1 auto;
    min-width: 0;
    width: auto;
    height: 36px;
    min-height: 36px;
    max-width: none !important;
    margin: 0;
    padding: 0 4px 0 16px;
    box-sizing: border-box;
    background: var(--aikb-surface, #fffdf9);
    border: 1px solid var(--aikb-line, #e6dfd4);
    border-radius: 999px;
    box-shadow: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.aikb-news-filters .search-input-wrapper.site-search-form:focus-within {
    border-color: var(--aikb-focus, rgba(196, 92, 38, 0.58));
    box-shadow: inset 0 0 0 1px var(--aikb-focus-soft, rgba(196, 92, 38, 0.16));
}

.aikb-news-filters .search-filter .search-input {
    flex: 1 1 auto;
    width: auto !important;
    max-width: none !important;
    min-width: 0;
    height: 34px !important;
    line-height: 34px !important;
    margin: 0;
    padding: 0 8px 0 0 !important;
    border: none !important;
    border-radius: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    text-indent: 0 !important;
    font-size: 14px;
    text-align: left;
    color: var(--aikb-ink, #1f2430);
    transition: none;
}

.aikb-news-filters .search-filter .search-input:focus,
.aikb-news-filters .search-filter .search-input:focus-visible {
    outline: none !important;
    outline-offset: 0 !important;
    border: none !important;
    box-shadow: none !important;
}

.aikb-news-filters .search-btn,
.aikb-news-filters .clear-search {
    position: static !important;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    margin: 0;
    padding: 0;
    border: none;
    border-radius: 999px;
    background: transparent !important;
    color: var(--aikb-muted, #6b7280) !important;
    cursor: pointer;
    font-size: 16px;
    box-shadow: none;
    transition: background 0.15s ease, color 0.15s ease, opacity 0.15s ease;
}

.aikb-news-filters .search-btn:hover {
    background: rgba(196, 92, 38, 0.08) !important;
    color: var(--aikb-accent, #c45c26) !important;
    transform: none;
}

.aikb-news-filters .search-btn .icon {
    color: inherit;
    font-size: 18px;
    top: 0;
    line-height: 1;
}

.aikb-news-filters .clear-search {
    background: #eeeae3;
    color: #6b7280;
}

.aikb-news-filters .clear-search:hover {
    background: #ddd7ce;
    color: #374151;
    transform: none;
}

/* 原生 select：仅统一收起状态，展开列表仍由浏览器/系统负责。 */
.aikb-news-filters .aikb-native-sort-wrap {
    position: relative;
    flex: 1 1 auto;
    min-width: 0;
}

.aikb-news-filters .sort-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    display: block;
    box-sizing: border-box;
    width: 100%;
    height: 36px;
    margin: 0;
    padding: 8px 38px 8px 12px;
    border: 1px solid var(--aikb-line, #e6dfd4);
    border-radius: 6px;
    -webkit-border-radius: 6px;
    background-color: var(--aikb-surface, #fffdf9);
    background-image: none !important;
    background-clip: padding-box;
    color: var(--aikb-ink, #1f2430);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    line-height: 1.4;
    letter-spacing: normal;
    text-transform: none;
    box-shadow: none;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 36px;
}

.aikb-news-filters .sort-select::-ms-expand {
    display: none;
}

.aikb-news-filters .sort-select:hover,
.aikb-news-filters .sort-select:focus {
    outline: none;
    border-color: var(--aikb-accent, #c45c26);
    box-shadow: 0 0 0 3px rgba(196, 92, 38, 0.1);
}

.aikb-news-filters .sort-select-icon {
    display: inline-block;
    width: 20px;
    height: 20px;
    position: absolute;
    top: 50%;
    right: 10px;
    color: var(--aikb-ink, #1f2430);
    pointer-events: none;
    transform: translateY(-50%);
}

.aikb-news-filters .sort-select-icon::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 7px;
    height: 7px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: translate(-50%, -68%) rotate(45deg);
    transform-origin: center;
}

/* 筛选与排序：统一整个未展开控件的规格。 */
.aikb-news-filters .dropdown-trigger,
.aikb-news-filters .sort-select {
    position: relative;
    box-sizing: border-box;
    width: 100%;
    height: 36px;
    min-height: 36px;
    margin: 0;
    padding: 0 38px 0 12px;
    border: 1px solid var(--aikb-line, #e6dfd4);
    border-radius: 6px;
    background-color: var(--aikb-surface, #fffdf9);
    background-image: none !important;
    color: var(--aikb-ink, #1f2430);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    line-height: 1.4;
    letter-spacing: normal;
    box-shadow: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.aikb-news-filters .dropdown-trigger:hover,
.aikb-news-filters .sort-select:hover {
    border-color: var(--aikb-accent, #c45c26);
    box-shadow: 0 2px 8px rgba(196, 92, 38, 0.12);
}

.aikb-news-filters .dropdown-trigger:focus-visible,
.aikb-news-filters .sort-select:focus {
    outline: none;
    border-color: var(--aikb-accent, #c45c26);
    box-shadow: 0 0 0 3px rgba(196, 92, 38, 0.1);
}

.aikb-news-filters .dropdown-icon,
.aikb-news-filters .sort-select-icon {
    position: absolute;
    top: 50%;
    right: 10px;
    display: block;
    width: 20px;
    height: 20px;
    margin: 0;
    color: var(--aikb-ink, #1f2430);
    pointer-events: none;
    transform: translateY(-50%);
}

.aikb-news-filters .dropdown-icon::before,
.aikb-news-filters .sort-select-icon::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 7px;
    height: 7px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: translate(-50%, -68%) rotate(45deg);
    transform-origin: center;
}


/* 已选筛选条件标签 - 显示在顶部 */
.aikb-news-filters .active-filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    padding: 12px 16px;
    background: var(--aikb-surface-soft, #f6f3ee);
    border-radius: 8px 8px 0 0;
    margin-bottom: -8px;
    border-bottom: 1px solid var(--aikb-line, #e6dfd4);
}

.aikb-news-filters .filter-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: var(--aikb-surface, #fffdf9);
    color: var(--aikb-ink, #1f2430);
    border: 1px solid var(--aikb-line, #e6dfd4);
    border-radius: 999px;
    font-size: 12px;
    font-weight: 500;
    transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.aikb-news-filters .filter-tag:hover {
    background: var(--aikb-surface, #fffdf9);
    border-color: rgba(196, 92, 38, 0.35);
    color: var(--aikb-accent, #c45c26);
    transform: none;
}

.aikb-news-filters .remove-filter {
    background: transparent;
    border: none;
    color: var(--aikb-muted, #6b7280);
    width: 18px;
    height: 18px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    transition: color 0.2s ease, background 0.2s ease;
    margin-left: 2px;
    opacity: 1;
    visibility: visible;
}

.aikb-news-filters .remove-filter:hover {
    background: rgba(31, 36, 48, 0.06);
    color: var(--aikb-ink, #1f2430);
    transform: none;
}

.aikb-news-filters .remove-filter i {
    font-size: 10px;
    line-height: 1;
}

/* 内联清除全部按钮样式 */
.aikb-news-filters .clear-all-filter-inline {
    display: inline-flex;
    margin-left: 8px;
}

.aikb-news-filters .btn-clear-all-inline {
    background: transparent;
    color: var(--aikb-muted, #6b7280);
    border: 1px solid var(--aikb-line, #e6dfd4);
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: border-color 0.2s ease, color 0.2s ease;
    display: flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}

.aikb-news-filters .btn-clear-all-inline:hover {
    background: transparent;
    border-color: rgba(196, 92, 38, 0.35);
    color: var(--aikb-accent, #c45c26);
    transform: none;
}

.aikb-news-filters .btn-clear-all-inline i {
    font-size: 12px;
}

/* 搜索提示样式 */
.aikb-news-filters .search-input.search-hint {
    border-color: #ff6b6b !important;
    background-color: #fff5f5 !important;
    color: #ff6b6b !important;
    animation: searchHintPulse 1s ease-in-out;
}

@keyframes searchHintPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* 动画效果 */
/* fadeIn 动画已禁用 - 文章加载不使用动画效果 */
/* @keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
} */

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 桌面端样式 - 确保不使用移动端的transform */
@media (min-width: 769px) {
    .aikb-news-filters .unified-dropdown-content {
        transform: translateY(0) !important;
        position: absolute !important;
        top: 100% !important;
    }
    
    .aikb-news-filters .dropdown-filter.active .unified-dropdown-content {
        transform: translateY(0) !important;
    }
}

/* 中等屏幕自适应 */
@media (max-width: 1024px) {
    .aikb-news-filters .dropdown-filters-row {
        justify-content: center;
    }
    
    .aikb-news-filters .main-filter-dropdown {
        flex: 1 1 0;
        min-width: 180px;
        max-width: 250px;
    }
    
    .aikb-news-filters .sort-filter {
        flex: 1 1 0;
        min-width: 180px;
        max-width: 250px;
    }
    
    .aikb-news-filters .search-filter {
        flex: 2 1 auto;
        min-width: 250px;
    }
    
    /* 中等屏幕下拉内容高度限制 */
    .aikb-news-filters .unified-dropdown-content {
        max-height: 75vh;
    }
    
    .aikb-news-filters .group-section-options {
        grid-template-columns: 1fr;
        gap: 1px;
        max-height: 65vh;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .aikb-news-filters .dropdown-filters-row {
        display: grid;
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) 40px;
        gap: 8px;
        padding: 12px;
        align-items: center;
    }
    
    /* 移动端响应式布局 - 筛选和排序同一行，搜索框单独一行 */
    .aikb-news-filters .main-filter-dropdown {
        grid-column: 1;
        width: auto;
        min-width: auto;
        max-width: none;
        order: 1;
        position: static !important;
        overflow: visible !important;
    }
    
    /* 移动端确保dropdown-filter不影响弹窗定位 */
    .aikb-news-filters .dropdown-filter.unified-filter {
        position: static !important;
        overflow: visible !important;
    }
    
    .aikb-news-filters .sort-filter {
        grid-column: 2;
        width: auto;
        min-width: auto;
        max-width: none;
        order: 2;
    }

    .aikb-news-filters .sort-direction-btn {
        grid-column: 3;
        width: 40px;
        min-width: 40px;
        margin: 0;
        order: 2;
    }
    
    .aikb-news-filters .search-filter {
        grid-column: 1 / -1;
        width: 100%;
        min-width: auto;
        max-width: none;
        order: 3;
    }
    
    /* 移动端搜索框保持100%宽度 */
    .aikb-news-filters .search-filter:has(+ .filter-results-info) {
        width: 100%;
        max-width: none;
    }
    
    /* 移动端筛选结果信息独占一行并居中 */
    .aikb-news-filters .filter-results-info {
        width: 100%;
    display: flex;
    justify-content: center;
        font-size: 11px;
        padding: 5px 10px;
        order: 4;
    }
    
    /* 移动端自适应弹窗样式 - 使用更高优先级选择器 */
    .aikb-news-filters .dropdown-filter.active .unified-dropdown-content,
    .aikb-news-filters .dropdown-filter.unified-filter .unified-dropdown-content,
    .aikb-news-filters .unified-dropdown-content {
        /* 居中显示弹窗 */
        position: fixed !important;
        top: 50% !important;
        left: 50% !important;
        
        /* 自适应弹窗尺寸 */
        width: calc(100vw - 32px) !important; /* 减去左右边距 */
        min-width: 320px !important; /* 最小宽度 */
        max-width: min(90vw, 1200px) !important; /* 自适应最大宽度：90%视口宽度或1200px */
        
        /* 自适应高度设置 */
        height: auto !important;
        min-height: 300px !important;
        max-height: calc(100vh - 64px) !important; /* 减去上下边距 */
        
        /* 重置所有可能影响位置的属性 */
        margin: 0 !important;
        padding: 0 !important;
        border-radius: 20px !important; /* 四周圆角 */
        border: none !important;
        bottom: auto !important;
        right: auto !important;
        
        /* 层级和样式 */
        background: var(--aikb-surface, #fffdf9) !important; /* paper surface */
        display: flex !important;
        flex-direction: column !important;
        align-items: stretch !important;
        
        /* 初始状态：隐藏并缩小 */
        opacity: 0 !important;
        transform: translate(-50%, -50%) scale(0.8) !important; /* 完全居中并缩小 */
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
        overflow: hidden !important; /* 防止内容溢出 */
        
        /* 强制覆盖任何父元素的transform */
        will-change: transform, opacity !important;
        
        /* 确保内容不会超出屏幕边界 */
        box-sizing: border-box !important;
        
        /* 防止水平滚动 */
        overflow-x: hidden !important;
        
        /* 添加阴影效果 */
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3) !important;
    }
    
    /* 激活时居中显示并放大 */
    .aikb-news-filters .dropdown-filter.active .unified-dropdown-content,
    .aikb-news-filters .dropdown-filter.unified-filter.active .unified-dropdown-content {
        opacity: 1 !important;
        transform: translate(-50%, -50%) scale(1) !important;
    }
    
    /* 移动端遮罩层样式 - 通过JavaScript动态添加 */
    .aikb-news-filters .dropdown-overlay {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        background: rgba(0,0,0,0.5) !important;
        animation: fadeIn 0.3s ease !important;
        cursor: pointer !important; /* 添加手型光标，提示可点击 */
        pointer-events: auto !important; /* 确保可以接收点击事件 */
        display: block !important;
    }
    
    /* 遮罩层点击效果 */
    .aikb-news-filters .dropdown-overlay:hover {
        background: rgba(0,0,0,0.6) !important;
    }
    
    /* 强制移动端弹窗居中 - 最高优先级 */
    .aikb-news-filters .dropdown-filter.active .unified-dropdown-content {
        position: fixed !important;
        top: 50% !important;
        left: 50% !important;
        transform: translate(-50%, -50%) scale(1) !important;
        margin: 0 !important;
        right: auto !important;
        bottom: auto !important;
    }
    
    /* 确保弹窗父容器不限制z-index */
    .aikb-news-filters .dropdown-filter,
    .aikb-news-filters .dropdown-filter-system,
    .aikb-news-filters {
        z-index: auto !important;
        position: static !important;
    }
    
    /* 强制弹窗脱离所有父容器的z-index限制 */
    .aikb-news-filters .unified-dropdown-content {
        position: fixed !important;
        isolation: isolate !important; /* 创建新的层叠上下文 */
    }
    
    /* 最强优先级规则 - 确保弹窗在所有元素之上 */
    .aikb-news-filters .dropdown-filter.active .unified-dropdown-content,
    .aikb-news-filters .unified-dropdown-content[style*="display: flex"],
    .aikb-news-filters .unified-dropdown-content[style*="display: block"] {
        position: fixed !important;
        top: 50% !important;
        left: 50% !important;
        transform: translate(-50%, -50%) scale(1) !important;
        isolation: isolate !important;
        contain: layout style paint !important;
    }
    
    
    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }
    
    /* 移动端弹窗头部 - 主流APP样式 */
    .aikb-news-filters .dropdown-filter.active .unified-dropdown-content .dropdown-header {
        position: sticky;
        top: 0;
        z-index: 20;
        padding: 0 16px;
        background: var(--aikb-surface, #fffdf9);
        border-bottom: 1px solid #e5e5e5;
        box-shadow: 0 2px 12px rgba(0,0,0,0.08);
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 56px;
        flex-shrink: 0;
    }
    
    /* 头部标题区域 */
    .aikb-news-filters .dropdown-header .dropdown-title {
        flex: 1;
        text-align: center;
        font-size: 17px;
        font-weight: 600;
        color: #1a202c;
        padding: 0;
        letter-spacing: 0.3px;
    }
    
    /* 头部按钮区域 */
    .aikb-news-filters .dropdown-header .dropdown-actions {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 50%;
        transform: translateY(-50%);
        display: flex;
        justify-content: space-between;
        gap: 8px;
        pointer-events: none;
    }

    .aikb-news-filters .dropdown-header .dropdown-actions > button {
        pointer-events: auto;
    }

    .aikb-news-filters .dropdown-header .btn-reset-filter {
        min-height: auto;
        padding: 8px 14px;
        border-radius: 20px;
        background: var(--aikb-surface-soft, #f6f3ee);
        font-size: 14px;
    }
    
    /* 确认按钮 - 主流样式 */
    .aikb-news-filters .dropdown-header .btn-confirm-filter {
        background: var(--aikb-accent, #c45c26);
    color: white;
    border: none;
        padding: 9px 22px;
        border-radius: 22px;
        font-size: 14px;
    font-weight: 600;
        min-height: auto;
        box-shadow: 0 2px 12px rgba(196, 92, 38, 0.28);
        transition: all 0.25s ease;
    }
    
    .aikb-news-filters .dropdown-header .btn-confirm-filter:active {
        transform: scale(0.95);
        box-shadow: 0 1px 8px rgba(196, 92, 38, 0.25);
    }
    
    /* 移动端筛选内容区 - 纵向单列布局 */
    .aikb-news-filters .unified-dropdown-options {
        flex: 1;
        padding: 12px 12px 20px 12px;
        background: var(--aikb-surface-soft, #f6f3ee);
        display: flex !important;
        flex-direction: column !important;
        gap: 0 !important;
        max-height: calc(85vh - 140px);
        min-height: 200px;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        /* 确保内容能完全显示 */
        box-sizing: border-box;
    }
    
    
    /* 移动端筛选组 - 单列卡片样式 */
    .aikb-news-filters .filter-group-section {
        background: var(--aikb-surface, #fffdf9);
        margin-bottom: 12px;
        border-radius: 10px;
        overflow: hidden;
        box-shadow: 0 2px 8px rgba(0,0,0,0.06);
        border: none !important;
        border-right: none !important;
        width: 100% !important;
        flex: none !important;
        min-width: auto !important;
        position: relative;
    }
    
    /* 最后一个筛选组移除底部间距 */
    .aikb-news-filters .filter-group-section:last-child {
        margin-bottom: 0;
        border-right: none !important;
    }
    
    /* 筛选组之间的分隔效果 */
    .aikb-news-filters .filter-group-section + .filter-group-section {
        margin-top: 4px;
    }
    
    /* 移动端分组标题 - 纸色底 + 主题强调色 */
    .aikb-news-filters .group-section-header {
        background: var(--aikb-surface-soft, #f6f3ee);
        padding: 10px 12px;
        min-height: auto;
        position: static;
        border-bottom: 1px solid var(--aikb-line, #e6dfd4);
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    
    .aikb-news-filters .group-section-title {
        color: var(--aikb-ink, #1f2430);
        font-size: 13px;
        font-weight: 600;
        justify-content: flex-start;
        text-align: left;
        display: flex;
        align-items: center;
        gap: 6px;
        flex: 1;
    }
    
    .aikb-news-filters .group-section-title i {
        font-size: 14px;
        color: var(--aikb-accent, #c45c26);
        flex-shrink: 0;
    }
    
    .aikb-news-filters .group-count {
        background: rgba(196, 92, 38, 0.1);
        color: var(--aikb-accent, #c45c26);
        padding: 2px 8px;
        border-radius: 10px;
        font-size: 11px;
        font-weight: 600;
        margin-left: 6px;
        flex-shrink: 0;
        white-space: nowrap;
    }
    
    /* 移动端筛选选项 - 紧凑标签布局 */
    .aikb-news-filters .group-section-options {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        padding: 12px 16px; /* 增加左右内边距，确保内容不贴边 */
        background: var(--aikb-surface, #fffdf9);
        max-height: none;
        /* 确保内容能完全显示 */
        box-sizing: border-box;
        /* 添加滚动条样式，确保用户知道可以滚动 */
        scrollbar-width: thin;
        scrollbar-color: #cbd5e0 #f7fafc;
    }
    
    /* WebKit滚动条样式 */
    .aikb-news-filters .group-section-options::-webkit-scrollbar {
        width: 6px;
    }
    
    .aikb-news-filters .group-section-options::-webkit-scrollbar-track {
        background: #f7fafc;
        border-radius: 3px;
    }
    
    .aikb-news-filters .group-section-options::-webkit-scrollbar-thumb {
        background: #cbd5e0;
        border-radius: 3px;
    }
    
    .aikb-news-filters .group-section-options::-webkit-scrollbar-thumb:hover {
        background: #a0aec0;
    }
    
    /* 移动端筛选项 - 紧凑标签按钮 */
    .aikb-news-filters .group-option {
        flex: 0 0 auto;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 7px 12px;
        background: var(--aikb-surface-soft, #f6f3ee);
        border: 1.5px solid #e9ecef;
        border-radius: 18px;
        cursor: pointer;
        transition: all 0.25s ease;
        font-size: 13px;
        min-height: 36px;
        white-space: nowrap;
        user-select: none;
        -webkit-tap-highlight-color: transparent;
        max-width: calc(50% - 4px); /* 确保每行最多显示2个按钮 */
        box-sizing: border-box;
        overflow: hidden; /* 防止文本溢出 */
        text-overflow: ellipsis; /* 文本过长时显示省略号 */
    }
    
    /* 隐藏复选框 */
    .aikb-news-filters .group-option input[type="checkbox"] {
        display: none;
    }
    
    /* 选中状态 */
    .aikb-news-filters .group-option input[type="checkbox"]:checked + .option-text {
        color: white;
    font-weight: 600;
    }
    
    .aikb-news-filters .group-option:has(input[type="checkbox"]:checked) {
        background: var(--aikb-accent, #c45c26);
        border-color: var(--aikb-accent, #c45c26);
        transform: none;
        box-shadow: none;
    }
    
    /* 未选中状态点击反馈 */
    .aikb-news-filters .group-option:active {
        transform: scale(0.95);
    }
    
    .aikb-news-filters .group-option:has(input[type="checkbox"]:checked):active {
        transform: scale(1.0);
    }
    
    .aikb-news-filters .group-option .option-text {
        color: #2d3748;
        font-weight: 500;
        white-space: nowrap;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 3px;
        line-height: 1.3;
        width: 100%;
        text-align: center;
    }
    
    .aikb-news-filters .group-option .option-count {
        color: #718096;
        font-size: 11px;
        margin-left: 0;
        font-weight: 600;
    }
    
    .aikb-news-filters .group-option:has(input[type="checkbox"]:checked) .option-text,
    .aikb-news-filters .group-option:has(input[type="checkbox"]:checked) .option-count {
        color: white;
    }
    
    /* 移动端通用下拉内容（非统一筛选器） */
    .aikb-news-filters .dropdown-content:not(.unified-dropdown-content) {
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 90%;
        max-width: 400px;
        max-height: 70vh;
        border-radius: 8px;
        z-index: 999999;
    }
    
    .aikb-news-filters .active-filter-tags {
        padding: 10px 12px;
    }
    
    .aikb-news-filters .filter-tag {
        font-size: 11px;
    padding: 4px 8px;
    }
    
    .aikb-news-filters .remove-filter {
        width: 16px;
        height: 16px;
        font-size: 10px;
        margin-left: 4px;
    }
    
    .aikb-news-filters .remove-filter i {
        font-size: 8px;
    }
    
    .aikb-news-filters .group-option {
        padding: 6px 8px;
        font-size: 11px;
        align-items: flex-start;
        line-height: 1.4;
    }
    
    .aikb-news-filters .group-option input[type="checkbox"] {
        margin-top: 1px;
    }
    
    .aikb-news-filters .group-option .option-text {
        line-height: 1.4;
        word-wrap: break-word;
        word-break: break-word;
    }
}

@media (max-width: 480px) {
    .aikb-news-filters .dropdown-filters-row {
        padding: 8px;
        gap: 6px;
    }
    
    .aikb-news-filters .dropdown-trigger {
        font-size: 12px;
        padding: 6px 10px;
        min-height: 32px;
    }
    
    .aikb-news-filters .sort-select {
        font-size: 12px;
        height: 32px;
        padding: 6px 34px 6px 10px;
        min-height: 32px;
    }

    .aikb-news-filters .dropdown-trigger,
    .aikb-news-filters .sort-select {
        height: 32px;
        min-height: 32px;
        padding: 0 34px 0 10px;
        font-size: 12px;
    }

    .aikb-news-filters .dropdown-icon,
    .aikb-news-filters .sort-select-icon {
        right: 8px;
    }
    
}
/* 强制确保下拉列表可见性 */
.aikb-news-filters .dropdown-filter-system,
.aikb-news-filters .dropdown-filters-row,
.aikb-news-filters .dropdown-filter {
    overflow: visible !important;
}

/* 通用下拉内容强制可见性（不影响统一筛选器） */
.aikb-news-filters .dropdown-content:not(.unified-dropdown-content) {
    position: absolute !important;
    z-index: 999999 !important;
    overflow: visible !important;
}

/* 确保统一下拉内容默认隐藏 */
.aikb-news-filters .unified-dropdown-content {
    display: none !important;
}

.aikb-news-filters {
    overflow: visible !important;
    margin-bottom: 28px;
}

/* 「问 AI」与搜索同行（插件注入 .amz-aikb-search-ask-mini） */
.aikb-news-filters .search-filter {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.aikb-news-filters .search-filter .search-input-wrapper {
    flex: 1 1 auto;
    min-width: 140px;
}

.aikb-news-filters .search-filter .amz-aikb-search-ask-mini,
.aikb-news-filters .dropdown-filters-row > .amz-aikb-search-ask-mini {
    flex: 0 0 auto;
    align-self: center;
    margin: 0;
    white-space: nowrap;
}

.aikb-news-filters .sort-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.aikb-news-filters .sort-direction-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    min-width: 40px;
    height: 36px;
    min-height: 36px;
    padding: 0 10px;
    border: 1px solid var(--aikb-line, #e6dfd4);
    border-radius: 6px;
    background: var(--aikb-surface, #fffdf9);
    cursor: pointer;
}

/* 桌面与平板横屏：宽屏限制阅读宽度，窄窗口自动收缩且不向右溢出。 */
@media (min-width: 769px) {
    .aikb-news-filters .main-filter-dropdown,
    .aikb-news-filters .dropdown-filter.unified-filter {
        position: static !important;
    }

    .aikb-news-filters .dropdown-filter.unified-filter .unified-dropdown-content {
        top: 100% !important;
        left: 0 !important;
        right: auto !important;
        width: min(1120px, calc(100% - 24px)) !important;
        min-width: 0 !important;
        max-width: 1120px !important;
        box-sizing: border-box;
        z-index: 30 !important;
    }

    .aikb-news-filters .dropdown-filter.unified-filter.active .unified-dropdown-content {
        display: flex !important;
        flex-direction: column;
        overflow-y: hidden !important;
    }

    .aikb-news-filters .unified-dropdown-content > .dropdown-header {
        flex: 0 0 auto;
    }

    .aikb-news-filters .unified-dropdown-options {
        flex: 1 1 auto;
        min-height: 0;
        overflow: hidden;
    }

    .aikb-news-filters .filter-group-section {
        display: flex;
        flex-direction: column;
        min-height: 0;
    }

    .aikb-news-filters .group-section-header {
        flex: 0 0 auto;
    }

    .aikb-news-filters .group-section-options {
        flex: 1 1 auto;
        min-height: 0;
        max-height: none !important;
        overflow-y: auto;
    }
}

/* 中等宽度为两行工具栏；展开筛选时收起搜索行，让面板紧贴第一行控件。 */
@media (min-width: 769px) and (max-width: 1024px) {
    .aikb-news-filters .dropdown-filter.unified-filter .unified-dropdown-content {
        top: calc(100% - 12px) !important;
    }

    .aikb-news-filters .dropdown-filters-row:has(.dropdown-filter.unified-filter.active) > .search-filter,
    .aikb-news-filters .dropdown-filters-row:has(.dropdown-filter.unified-filter.active) > .amz-aikb-search-ask-mini {
        display: none !important;
    }
}

/* 移动端关闭筛选面板时必须退出点击层，避免透明 fixed 面板拦截页面链接。 */
@media (max-width: 768px) {
    .aikb-news-filters .dropdown-filter.unified-filter:not(.active) .unified-dropdown-content {
        display: none !important;
        visibility: hidden !important;
        opacity: 0 !important;
        pointer-events: none !important;
    }

    .aikb-news-filters .dropdown-filter.unified-filter.active .unified-dropdown-content {
        display: flex !important;
        visibility: visible !important;
        opacity: 1 !important;
        pointer-events: auto !important;
        /* Keep the mobile filter modal above the toolbar's sort and search controls. */
        z-index: 2147483000 !important;
    }
}

@media (max-width: 768px) {
    .aikb-news-filters .search-filter {
        width: 100%;
    }
}

/* 超窄屏下三个首行控件使用同一紧凑高度。 */
@media (max-width: 480px) {
    .aikb-news-filters .sort-direction-btn {
        height: 32px;
        min-height: 32px;
    }

    .aikb-news-filters .search-input-wrapper.site-search-form {
        height: 32px;
        min-height: 32px;
        padding-left: 12px;
    }

    .aikb-news-filters .search-filter .search-input {
        height: 30px !important;
        line-height: 30px !important;
    }

    .aikb-news-filters .search-btn,
    .aikb-news-filters .clear-search {
        width: 28px;
        height: 28px;
    }

    .aikb-news-filters .search-filter .amz-aikb-search-ask-mini,
    .aikb-news-filters .dropdown-filters-row > .amz-aikb-search-ask-mini {
        min-height: 32px;
        height: 32px;
    }
}

/* Keep mobile filter tags compact, light and centered. */
@media (max-width: 768px) {
    .aikb-news-filters .group-section-options {
        gap: 6px;
        padding: 10px 12px;
    }

    .aikb-news-filters .group-option {
        align-items: center;
        justify-content: center;
        min-height: 32px;
        padding: 5px 9px;
        border-width: 1px;
        border-color: rgba(31, 36, 48, 0.08);
        border-color: color-mix(in srgb, var(--aikb-line, #e6dfd4) 72%, transparent);
        border-radius: 10px;
        background: rgba(107, 114, 128, 0.04);
        background: color-mix(in srgb, var(--aikb-surface-soft, #f6f3ee) 55%, transparent);
        box-shadow: none;
        text-align: center;
    }

    .aikb-news-filters .group-option .option-text {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 100%;
        min-width: 0;
        margin: 0;
        color: var(--aikb-ink, #1f2430);
        font-weight: 500;
        line-height: 1.2;
        text-align: center;
    }

    .aikb-news-filters .group-option .option-count {
        color: var(--aikb-muted, #6b7280);
        font-size: 10px;
        font-weight: 500;
        opacity: 0.82;
    }

    .aikb-news-filters .group-option:has(input[type="checkbox"]:checked) {
        background: rgba(196, 92, 38, 0.10);
        background: color-mix(in srgb, var(--aikb-accent, #c45c26) 10%, var(--aikb-surface, #fffdf9));
        border-color: rgba(196, 92, 38, 0.30);
        border-color: color-mix(in srgb, var(--aikb-accent, #c45c26) 30%, transparent);
        box-shadow: none;
    }

    .aikb-news-filters .group-option input[type="checkbox"]:checked + .option-text,
    .aikb-news-filters .group-option:has(input[type="checkbox"]:checked) .option-count {
        color: var(--aikb-accent, #c45c26);
        font-weight: 600;
    }
}

/* Mobile rendering stability: avoid re-rasterizing the entire modal on each selection. */
@media (max-width: 768px) {
    .aikb-news-filters .dropdown-filter.active .unified-dropdown-content,
    .aikb-news-filters .dropdown-filter.unified-filter.active .unified-dropdown-content,
    .aikb-news-filters .unified-dropdown-content[style*="display: flex"],
    .aikb-news-filters .unified-dropdown-content[style*="display: block"] {
        top: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        left: 0 !important;
        height: fit-content !important;
        max-height: calc(100vh - 64px) !important;
        max-height: calc(100dvh - 64px) !important;
        margin: auto !important;
        transform: none !important;
        transition: opacity 0.16s ease !important;
        will-change: auto !important;
        backface-visibility: visible !important;
        contain: none !important;
    }

    .aikb-news-filters .group-option,
    .aikb-news-filters .group-option:active,
    .aikb-news-filters .group-option:has(input[type="checkbox"]:checked):active {
        transform: none !important;
        transition: background-color 0.12s ease, border-color 0.12s ease, color 0.12s ease;
    }

    .aikb-news-filters .group-option .option-text,
    .aikb-news-filters .group-option .option-count {
        transition: color 0.12s ease;
    }
}