/* ===== 现代化样式优化 ===== */

/* 全局字体和基础样式优化 */
body, html {
    font-size: 14px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    line-height: 1.6;
}

/* 自定义CSS变量 - 现代化配色方案 */
:root {
    --primary-color: #667eea;
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-color: #f093fb;
    --accent-color: #4facfe;
    --success-color: #43e97b;
    --warning-color: #fa709a;
    --danger-color: #ff6b6b;
    --dark-color: #2d3748;
    --light-color: #f7fafc;
    --gray-100: #f7fafc;
    --gray-200: #edf2f7;
    --gray-300: #e2e8f0;
    --gray-400: #cbd5e0;
    --gray-500: #a0aec0;
    --gray-600: #718096;
    --gray-700: #4a5568;
    --gray-800: #2d3748;
    --gray-900: #1a202c;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 深色模式变量 */
.io-black-mode {
    --primary-color: #667eea;
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --dark-color: #1a202c;
    --light-color: #2d3748;
    --gray-100: #2d3748;
    --gray-200: #4a5568;
    --gray-300: #718096;
    --gray-400: #a0aec0;
    --gray-500: #cbd5e0;
    --gray-600: #e2e8f0;
    --gray-700: #edf2f7;
    --gray-800: #f7fafc;
    --gray-900: #ffffff;
}

/* 左导航悬浮sidebar-menu-inner宽度调整为90px */
.sidebar-popup.sidebar-menu-inner > div > ul > li.sidebar-item>ul {
    position: absolute;
    top: 0px;
    left: 10px;
    width: 90px;
    z-index: 99;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.sidebar-popup.sidebar-menu-inner ul {
    width: 90px;
}

.sidebar-popup.sidebar-menu-inner ul li {
    width: 90px;
}

/* 隐藏左导航scrollbar */
.sidebar-menu.flex-fill::-webkit-scrollbar {
    display: none;
}

/* 搜索框搜索图标颜色 */
#search button i {
    color: var(--primary-color);
    font-size: 18px;
}

/* 顶部导航栏字体+图标颜色 */
.big-header-banner .page-header {
    color: #ffffff;
    background: rgba(255, 255, 255, 0);
    box-shadow: none;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.big-header-banner:not(.header-bg) .page-header .navbar-nav>li>a,
.big-header-banner:not(.header-bg) .navbar-menu a:not(.dropdown-item) {
    color: #ffffff;
    font-weight: 500;
    transition: var(--transition);
}

.big-header-banner:not(.header-bg) .page-header .navbar-nav>li>a:hover,
.big-header-banner:not(.header-bg) .navbar-menu a:not(.dropdown-item):hover {
    color: var(--primary-color);
    transform: translateY(-1px);
}

.big-header-banner:not(.header-bg) .header-mini-btn path {
    stroke: #ffffff;
}

.big-header-banner:not(.header-bg) .header-mini-btn label:hover path {
    stroke: var(--primary-color);
}

/* 搜索栏字体+背景 */
.header-big #search-text {
    color: var(--gray-700);
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.header-big #search-text:focus {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    outline: none;
}

.io-black-mode .header-big #search-text {
    color: var(--gray-300);
    background: var(--gray-800);
    border-color: var(--gray-600);
}

/* 搜索activate图标颜色 */
.header-big .search-type input:checked+label:before {
    content: '';
    border-width: 8px 8px 0px 8px;
    border-style: solid;
    border-color: var(--primary-color) transparent transparent;
    position: absolute;
    left: 50%;
    top: 0;
    margin-left: -8px;
}

/* 主页搜索搜索框(头+底部)字体颜色 */
.header-big:not(.no-bg) .s-type-list {
    color: var(--primary-color);
}

.header-big:not(.no-bg) .text-muted,
.header-big:not(.no-bg) .search-type .menu-item a,
.header-big:not(.no-bg) .big-title .h1 {
    color: #ffffff !important;
}

/* 主页header-banner底部宽度 */
.post-top {
    padding-bottom: 50px;
}

/* 左导航二级导航标题左侧距离 */
.sidebar-menu-inner ul li ul li a {
    margin-left: 30px;
}

/* 搜索部分背景样式 */
.header-big.css-color {
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
}

.header-big.css-color::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.8) 0%, rgba(118, 75, 162, 0.8) 100%);
    z-index: 1;
}

.header-big.css-color > * {
    position: relative;
    z-index: 2;
}

/* 搜索热词样式调整 */
.search-hot-text {
    position: absolute;
    z-index: 100;
    width: 100%;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    background: #FFF;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.search-hot-text ul {
    margin: 0;
    padding: 8px 0;
}

.search-hot-text ul li {
    line-height: 32px;
    font-size: 14px;
    padding: 0px 25px;
    color: var(--gray-700);
    cursor: pointer;
    transition: var(--transition);
    border-radius: 6px;
    margin: 2px 8px;
}

.io-black-mode .search-hot-text ul li {
    color: var(--gray-300);
}

.search-hot-text ul li.current {
    background: var(--primary-gradient);
    color: white;
}

.search-hot-text ul li:hover {
    background: var(--gray-100);
    color: var(--primary-color);
    cursor: pointer;
    transform: translateX(4px);
}

.search-hot-text ul li span {
    display: inline-block;
    width: 20px;
    height: 20px;
    font-size: 12px;
    line-height: 20px;
    text-align: center;
    background: var(--gray-200);
    margin-right: 10px;
    border-radius: 10px;
    color: var(--gray-600);
    transition: var(--transition);
}

.search-hot-text ul li:hover span {
    background: var(--primary-color);
    color: white;
}

/* Footer样式优化 */
footer.main-footer .footer-text {
    text-align: center;
    padding: 20px 0;
    color: var(--gray-600);
}

footer.main-footer .footer-text a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

footer.main-footer .footer-text a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* About页面 */
.panel .panel-body a {
    color: var(--primary-color);
    transition: var(--transition);
}

.panel .panel-body a:hover {
    color: var(--accent-color);
}

/* 现代化背景优化 - 已移至 background-options.css */
/* 背景样式现在由 background-options.css 控制，支持6种不同的背景方案 */

/* 渐变动画 - 保留用于其他元素 */
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 导航 Logo 图标裁剪边角 */
.url-card .url-img > img {
    border-radius: var(--border-radius);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.url-card .url-img > img:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* ===== 卡片样式现代化 ===== */
.url-card .url-body {
    transform: translateY(0px);
    transition: var(--transition);
    border-radius: var(--border-radius);
    overflow: hidden;
    background: white;
    border: 1px solid var(--gray-200);
}

.url-card .url-body:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.url-card .card {
    border: none;
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    background: white;
}

.url-card .card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.url-card .card-body {
    padding: 1.25rem;
}

/* 卡片内容布局优化 */
.url-card .url-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.url-card .url-img {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    overflow: hidden;
    flex-shrink: 0;
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.url-card .url-img:hover {
    background: var(--primary-gradient);
}

.url-card .url-info {
    flex: 1;
    min-width: 0;
}

.url-card .url-info strong {
    color: var(--gray-900);
    font-weight: 600;
    font-size: 0.95rem;
    line-height: 1.4;
    margin-bottom: 4px;
    display: block;
}

.url-card .url-info p {
    color: var(--gray-600);
    font-size: 0.85rem;
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 直达按钮样式 */
.url-card .togo {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--gray-100);
    color: var(--gray-500);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
    text-decoration: none;
}

.url-card .url-body:hover .togo {
    opacity: 1;
    background: var(--primary-gradient);
    color: white;
    transform: scale(1.1);
}

/* 分类标题样式 */
.text-gray.text-lg {
    color: var(--gray-800);
    font-weight: 600;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-left: 16px;
}

.text-gray.text-lg::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

.text-gray.text-lg i {
    color: var(--primary-color);
    margin-right: 8px;
}

/* 公告栏样式优化 */
.bulletin-big .card {
    border-radius: var(--border-radius);
    border: 1px solid var(--gray-200);
    background: white;
    box-shadow: var(--shadow-sm);
}

.bulletin-big .card-body {
    padding: 12px 16px;
}

.bulletin-big .carousel-item a {
    color: var(--gray-700);
    text-decoration: none;
    transition: var(--transition);
}

.bulletin-big .carousel-item a:hover {
    color: var(--primary-color);
}

/* 热门词汇样式 */
.header-big .word .wordsub {
    padding: 8px 16px;
    height: 40px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    margin: 4px;
    transition: var(--transition);
    text-decoration: none;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.header-big .word .wordsub:hover {
    background: rgba(255, 255, 255, 1);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.header-big .word .wordname {
    color: var(--gray-800);
    font-size: 0.85rem;
    font-weight: 500;
    white-space: nowrap;
}

.header-big .word .wordicon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    margin-right: 8px;
    object-fit: cover;
}

/* 页面标题样式 */
.url-font {
    color: white;
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin: 2rem 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 2;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .url-font {
        font-size: 2rem;
        margin: 1.5rem 0;
    }
    
    .url-card .url-img {
        width: 40px;
        height: 40px;
    }
    
    .url-card .card-body {
        padding: 1rem;
    }
    
    .header-big .word .wordsub {
        padding: 6px 12px;
        height: 36px;
        margin: 2px;
    }
}

/* 加载动画优化 */
.loader {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.loader::before,
.loader::after {
    background: var(--primary-gradient);
    border-radius: 50%;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    border-radius: 4px;
    background: var(--gray-200);
}

::-webkit-scrollbar-thumb {
    border-radius: 4px;
    background: var(--primary-gradient);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* 按钮样式优化 */
.btn {
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
}

.btn-primary {
    background: var(--primary-gradient);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* 工具按钮样式 */
#footer-tools .btn {
    border-radius: 50%;
    width: 44px;
    height: 44px;
    background: white;
    color: var(--gray-600);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

#footer-tools .btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--primary-color);
}

/* 深色模式适配 */
.io-black-mode .url-card .url-body {
    background: var(--gray-800);
    border-color: var(--gray-700);
}

.io-black-mode .url-card .card {
    background: var(--gray-800);
}

.io-black-mode .url-card .url-info strong {
    color: var(--gray-100);
}

.io-black-mode .url-card .url-info p {
    color: var(--gray-400);
}

.io-black-mode .url-card .togo {
    background: var(--gray-700);
    color: var(--gray-400);
}

.io-black-mode .text-gray.text-lg {
    color: var(--gray-200);
}

.io-black-mode .bulletin-big .card {
    background: var(--gray-800);
    border-color: var(--gray-700);
}

.io-black-mode .header-big .word .wordsub {
    background: rgba(45, 55, 72, 0.9);
    border-color: rgba(255, 255, 255, 0.1);
}

.io-black-mode .header-big .word .wordsub:hover {
    background: rgba(45, 55, 72, 1);
}

.io-black-mode .header-big .word .wordname {
    color: var(--gray-200);
}

.io-black-mode #footer-tools .btn {
    background: var(--gray-800);
    color: var(--gray-400);
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.url-card {
    animation: fadeInUp 0.6s ease-out;
}

/* 悬停效果增强 */
.url-card .url-body:hover .url-img img {
    transform: scale(1.1) rotate(2deg);
}

/* 分类标签样式 */
.site-tag {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 页面切换动画 */
.page-container {
    transition: var(--transition);
}

/* 搜索框聚焦效果 */
#search-text:focus {
    transform: scale(1.02);
}

/* 导航菜单悬停效果 */
.navbar-nav > li > a:hover {
    transform: translateY(-1px);
}

/* 侧边栏优化 */
.sidebar-nav-inner {
    background: white;
    box-shadow: var(--shadow-lg);
}

.sidebar-menu-inner a {
    border-radius: 8px;
    margin: 2px 8px;
    transition: var(--transition);
}

.sidebar-menu-inner a:hover {
    background: var(--primary-gradient);
    color: white;
    transform: translateX(4px);
}

/* 深色模式侧边栏 */
.io-black-mode .sidebar-nav-inner {
    background: var(--gray-800);
}

.io-black-mode .sidebar-menu-inner a {
    color: var(--gray-300);
}

.io-black-mode .sidebar-menu-inner a:hover {
    background: var(--primary-gradient);
    color: white;
}

/* 卡片内容终极可读性增强 */
.url-card .url-body,
.url-card .url-body * {
    background: rgba(255,255,255,0.98) !important;
    color: #222 !important;
    text-shadow: 0 1px 2px rgba(0,0,0,0.06) !important;
}

.io-black-mode .url-card .url-body,
.io-black-mode .url-card .url-body * {
    background: rgba(30,32,40,0.98) !important;
    color: #fff !important;
    text-shadow: none !important;
}

/* 首页推荐卡片背景和字体可读性增强 */
.header-big .word .wordsub {
    background: rgba(255,255,255,0.98) !important;
    color: #222 !important;
    text-shadow: 0 1px 2px rgba(0,0,0,0.08) !important;
}

.io-black-mode .header-big .word .wordsub {
    background: rgba(30,32,40,0.98) !important;
    color: #fff !important;
    text-shadow: none !important;
}

/* 首页推荐卡片字体可读性增强 */
.wordname,
.wordsub,
.text-muted,
.text-xs,
.url-card .wordname,
.url-card .wordsub {
    color: #222 !important;
    text-shadow: 0 1px 2px rgba(0,0,0,0.06) !important;
}

.io-black-mode .wordname,
.io-black-mode .wordsub,
.io-black-mode .text-muted,
.io-black-mode .text-xs,
.io-black-mode .url-card .wordname,
.io-black-mode .url-card .wordsub {
    color: #fff !important;
    text-shadow: none !important;
}

/* 终极强力修复首页推荐卡片字体和背景 */
.header-big .word .wordsub,
.header-big .word .wordsub *,
.header-big .wordsub,
.header-big .wordsub * {
    background: rgba(255,255,255,0.98) !important;
    color: #222 !important;
    text-shadow: 0 1px 2px rgba(0,0,0,0.08) !important;
}

.io-black-mode .header-big .word .wordsub,
.io-black-mode .header-big .word .wordsub *,
.io-black-mode .header-big .wordsub,
.io-black-mode .header-big .wordsub * {
    background: rgba(30,32,40,0.98) !important;
    color: #fff !important;
    text-shadow: none !important;
}

.wordname {
    color: #222 !important;
    font-weight: bold !important;
    background: none !important;
}

/* 白天模式：黑字（全站通用） */
body.io-grey-mode .wordname {
    color: #222 !important;
    -webkit-text-stroke: 0 !important;
    text-shadow: none !important;
    font-weight: bold !important;
    background: none !important;
}

/* 夜间模式：白字（全站通用） */
body.io-black-mode .wordname {
    color: #fff !important;
    -webkit-text-stroke: 0 !important;
    text-shadow: none !important;
    font-weight: bold !important;
    background: none !important;
}

/* 只要是按钮里的文字都变色（假设都在 .url-card .url-info strong 里） */
.url-card .url-info strong,
.url-card .url-info p {
    color: #222 !important;
    font-weight: bold !important;
}
.io-black-mode .url-card .url-info strong,
.io-black-mode .url-card .url-info p {
    color: #fff !important;
}

/* 白天模式：卡片标题黑字 */
body.io-grey-mode .url-card .url-info strong {
    color: #222 !important;
}

/* 夜间模式：卡片标题白字 */
body.io-black-mode .url-card .url-info strong {
    color: #fff !important;
}

/* 清理并唯一指定 wordname 颜色，确保主题切换生效 */
body.io-grey-mode .wordname {
    color: #222 !important;
    background: none !important;
    text-shadow: none !important;
}
body.io-black-mode .wordname {
    color: #fff !important;
    background: none !important;
    text-shadow: none !important;
}

/* ===== 全站通用夜间模式文字颜色控制 ===== */
/* 白天模式：所有文字为黑色 */
body.io-grey-mode,
body:not(.io-black-mode) {
    color: #222 !important;
}

body.io-grey-mode *,
body:not(.io-black-mode) * {
    color: inherit !important;
}

/* 夜间模式：所有文字为白色 */
body.io-black-mode {
    color: #fff !important;
}

body.io-black-mode * {
    color: inherit !important;
}

/* 特殊处理一些可能有自己颜色的元素 */
body.io-black-mode .text-muted {
    color: #ccc !important;
}

body.io-black-mode .text-secondary {
    color: #aaa !important;
}

/* 确保链接在夜间模式下也可见 */
body.io-black-mode a {
    color: #fff !important;
}

body.io-black-mode a:hover {
    color: var(--primary-color) !important;
}

/* 确保按钮文字在夜间模式下可见 */
body.io-black-mode .btn {
    color: #fff !important;
}

/* 确保卡片内容在夜间模式下可见 */
body.io-black-mode .card,
body.io-black-mode .card * {
    color: #fff !important;
}

/* 确保侧边栏文字在夜间模式下可见 */
body.io-black-mode .sidebar-menu-inner,
body.io-black-mode .sidebar-menu-inner * {
    color: #fff !important;
}

/* 确保导航栏文字在夜间模式下可见 */
body.io-black-mode .navbar,
body.io-black-mode .navbar * {
    color: #fff !important;
}

/* ===== 终极夜间模式文字颜色控制 ===== */
/* 覆盖主CSS文件中的夜间模式规则 */
body.io-black-mode,
body.io-black-mode *,
body.io-black-mode a:not(.btn),
body.io-black-mode .button > a {
    color: #fff !important;
}

/* 白天模式：确保所有文字为黑色 */
body.io-grey-mode,
body.io-grey-mode *,
body:not(.io-black-mode),
body:not(.io-black-mode) * {
    color: #222 !important;
}

/* 特殊处理一些元素 */
body.io-black-mode .text-muted {
    color: #ccc !important;
}

body.io-black-mode .text-secondary {
    color: #aaa !important;
}

/* 确保链接在夜间模式下可见且可点击 */
body.io-black-mode a {
    color: #fff !important;
}

body.io-black-mode a:hover {
    color: var(--primary-color) !important;
}

/* 确保所有卡片内容在夜间模式下可见 */
body.io-black-mode .card,
body.io-black-mode .card *,
body.io-black-mode .url-card,
body.io-black-mode .url-card * {
    color: #fff !important;
}

/* 确保侧边栏所有内容在夜间模式下可见 */
body.io-black-mode .sidebar-nav-inner,
body.io-black-mode .sidebar-nav-inner *,
body.io-black-mode .sidebar-menu-inner,
body.io-black-mode .sidebar-menu-inner * {
    color: #fff !important;
}

/* 确保导航栏所有内容在夜间模式下可见 */
body.io-black-mode .navbar,
body.io-black-mode .navbar *,
body.io-black-mode .page-header,
body.io-black-mode .page-header * {
    color: #fff !important;
}

/* 确保按钮文字在夜间模式下可见 */
body.io-black-mode .btn {
    color: #fff !important;
}

/* 确保搜索框文字在夜间模式下可见 */
body.io-black-mode #search-text,
body.io-black-mode .search-type input:checked + label {
    color: #fff !important;
}

/* 公告栏背景完全透明，去除阴影和边框 */
.bulletin-big,
.bulletin-big .card,
.bulletin-big .card-body,
#bulletin_box,
#bulletin_box .card,
#bulletin_box .card-body {
    background: transparent !important;
    background-color: transparent !important;
    box-shadow: none !important;
    border: none !important;
}
.bulletin-big::before,
.bulletin-big::after,
.bulletin-big .card::before,
.bulletin-big .card::after,
.bulletin-big .card-body::before,
.bulletin-big .card-body::after {
    background: transparent !important;
    box-shadow: none !important;
    border: none !important;
    content: none !important;
}

/* 强力覆盖公告栏所有背景、边框、阴影，确保完全透明 */
.bulletin,
.bulletin * {
    background: transparent !important;
    background-color: transparent !important;
    box-shadow: none !important;
    border: none !important;
}

/* 终极覆盖公告栏背景色和圆角 */
.header-big:not(.no-bg) #bulletin_box .card-body {
    background: transparent !important;
    box-shadow: none !important;
    border: none !important;
    border-radius: 0 !important;
}

/* 终极极致覆盖公告栏背景色和圆角，连内联样式都覆盖 */
#bulletin_box .card-body,
#bulletin_box .card-body[style] {
    background: transparent !important;
    box-shadow: none !important;
    border: none !important;
    border-radius: 0 !important;
}