/* ==================== 基础变量 ==================== */
:root {
    --primary-color: #0066cc;
    --bg-color: #f5f7f9;
    --surface-color: #ffffff;
    --text-color: #2c3e50;
    --text-muted: #7f8c8d;
    --border-color: #e9ecef;
    --header-bg: #ffffff;
    --sidebar-width: 280px;
    --content-max-width: 1200px;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    --box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

/* 深色模式变量 */
body.dark-mode {
    --bg-color: #1a1a1a;
    --surface-color: #2d2d2d;
    --text-color: #e0e0e0;
    --text-muted: #a0a0a0;
    --border-color: #404040;
    --header-bg: #2d2d2d;
    --link-color: #80c0ff;
    --link-hover: #a0d0ff;
}

/* ==================== 重置与基础 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    font-size: 16px;
    transition: background-color 0.3s, color 0.3s;
}

a {
    color: var(--link-color, var(--primary-color));
    text-decoration: none;
    transition: color 0.2s;
}
a:hover {
    color: var(--link-hover, #0056b3);
    text-decoration: underline;
}

/* ==================== 头部导航 ==================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: background 0.3s;
}

body.dark-mode .site-header {
    background: rgba(45, 45, 45, 0.9);
    backdrop-filter: blur(10px);
    border-bottom-color: rgba(255,255,255,0.05);
}

.header-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    position: relative;
}

.site-branding a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.3px;
    text-decoration: none;
}

/* ==================== 导航容器 ==================== */
.nav-wrapper {
    display: block;
}

/* ==================== PC端导航样式 - 修复二级菜单消失 ==================== */
.site-header .layui-nav {
    background: var(--header-bg);
    border-radius: 0;
    padding: 0;
    position: relative;
}

/* 导航菜单项 */
.site-header .layui-nav .layui-nav-item {
    line-height: 60px;
    position: relative;
    z-index: 10;
}

/* 透明桥梁 - 从父菜单底部延伸到子菜单区域 */
.site-header .layui-nav .layui-nav-item::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -20px;
    height: 20px;
    background: transparent;
    pointer-events: auto;
    z-index: 101;
}

.site-header .layui-nav .layui-nav-item > a {
    padding: 0 20px;
    font-size: 1.1rem;
    color: var(--text-color);
    transition: color 0.2s;
    display: inline-block;
}

.site-header .layui-nav .layui-nav-item > a:hover {
    color: var(--primary-color);
    background: transparent;
}

/* 当前选中项 */
.site-header .layui-nav .layui-nav-item.layui-this > a {
    color: var(--primary-color);
    background: transparent;
}

/* 二级菜单容器 - 与父菜单紧密连接 */
.site-header .layui-nav .layui-nav-child {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 5px 0;
    top: 58px;
    left: 0;
    min-width: 180px;
    max-width: 280px;
    white-space: normal;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    z-index: 102;
}

/* 为二级菜单添加一个向上的透明区域，与父菜单的透明桥梁衔接 */
.site-header .layui-nav .layui-nav-child::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 0;
    right: 0;
    height: 10px;
    background: transparent;
    pointer-events: auto;
}

/* 二级菜单项 */
.site-header .layui-nav .layui-nav-child dd {
    display: block !important;
    width: 100%;
    margin: 0;
    padding: 0;
    float: none;
    clear: both;
    position: relative;
}

.site-header .layui-nav .layui-nav-child dd a {
    display: block;
    width: 100%;
    padding: 8px 20px;
    font-size: 1rem;
    color: var(--text-color);
    line-height: 1.5;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: background 0.2s, color 0.2s;
    text-align: left;
}

.site-header .layui-nav .layui-nav-child dd a:hover {
    background: var(--primary-color);
    color: #fff;
}

/* ==================== 工具栏按钮 ==================== */
.toolbar {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.toolbar-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-muted);
    padding: 0.5rem;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.toolbar-btn:hover {
    background-color: var(--border-color);
    color: var(--text-color);
    transform: scale(1.05);
}

body.dark-mode .toolbar-btn:hover {
    background-color: #3a3a3a;
}

/* ==================== 移动端菜单按钮 ==================== */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 40px;
    height: 40px;
    position: relative;
    z-index: 1001;
    padding: 0;
}

.mobile-menu-toggle span {
    display: block;
    position: absolute;
    height: 3px;
    width: 24px;
    background: var(--text-color);
    border-radius: 3px;
    left: 8px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle span:nth-child(1) { top: 12px; }
.mobile-menu-toggle span:nth-child(2) { top: 18px; }
.mobile-menu-toggle span:nth-child(3) { top: 24px; }

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg);
    top: 18px;
}
.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg);
    top: 18px;
}

/* ==================== 移动端适配 ==================== */
@media (max-width: 992px) {
    /* 显示移动端菜单按钮 */
    .mobile-menu-toggle {
        display: block;
    }
    
    /* 导航包装器默认隐藏，点击后展开 */
    .nav-wrapper {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--surface-color);
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        z-index: 999;
        box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    }
    
    .nav-wrapper.active {
        max-height: 70vh;
        overflow-y: auto;
    }
    
    /* 移动端导航菜单样式 */
    .nav-wrapper .layui-nav {
        display: block;
        background: var(--surface-color);
        width: 100%;
        padding: 10px 0;
    }
    
    .nav-wrapper .layui-nav .layui-nav-item {
        display: block;
        width: 100%;
        line-height: 48px;
        margin: 0;
        padding: 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-wrapper .layui-nav .layui-nav-item > a {
        display: block;
        padding: 0 20px;
        font-size: 1rem;
    }
    
    /* 二级菜单在移动端默认收起，点击父级展开 */
    .nav-wrapper .layui-nav .layui-nav-child {
        position: static;
        box-shadow: none;
        background: var(--bg-color);
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .nav-wrapper .layui-nav .layui-nav-item.layui-nav-itemed > .layui-nav-child {
        max-height: 500px;
    }
    
    .nav-wrapper .layui-nav .layui-nav-child dd {
        display: block;
        width: 100%;
    }
    
    .nav-wrapper .layui-nav .layui-nav-child dd a {
        padding-left: 40px;
        font-size: 0.9rem;
        line-height: 44px;
    }
    
    /* 工具栏在移动端调整 */
    .toolbar {
        margin-left: auto;
    }
    
    .toolbar-btn {
        width: 36px;
        height: 36px;
        font-size: 1.1rem;
    }
    
    /* 移动端布局优化 - 减小左右边距 */
    .content-area {
        padding: 0 !important;
    }
    
    .main-content {
        padding: 1rem 12px !important;
        width: 100%;
    }
    
    /* 确保移动端隐藏侧边栏 */
    .sidebar {
        display: none !important;
    }
    
    .entry-header h1 {
        font-size: 1.6rem;
    }
    .post-meta {
        gap: 0.8rem;
    }
    .category-title {
        font-size: 1.25rem !important;
        margin: 10px 0 8px !important;
        padding-bottom: 5px !important;
        border-bottom: 2px solid var(--primary-color) !important;
        display: flex !important;
        align-items: center !important;
        color: var(--text-color) !important;
    }
    .category-title .layui-icon {
        font-size: 1.3rem !important;
        margin-right: 4px !important;
        color: var(--primary-color) !important;
    }
    .category-title .cat-count {
        font-size: 1rem !important;
        font-weight: normal !important;
        color: var(--text-muted) !important;
        margin-left: 4px !important;
    }
}

@media (max-width: 480px) {
    .category-title {
        font-size: 1.25rem !important;
        margin: 8px 0 6px !important;
    }
    .category-title .layui-icon {
        font-size: 1.3rem !important;
    }
    .category-title .cat-count {
        font-size: 1rem !important;
    }
}

/* ==================== 主布局：两栏紧密连接 ==================== */
.content-area {
    max-width: var(--content-max-width);
    margin: 2rem auto;
    padding: 0 20px;
    display: flex;
    background: var(--surface-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--border-color);
}

.sidebar {
    flex: 0 0 var(--sidebar-width);
    background: var(--surface-color);
    padding: 2rem 0;
    border-right: 1px solid var(--border-color);
}

.main-content {
    flex: 1;
    background: var(--surface-color);
    padding: 2rem 2.5rem;
    min-width: 0;
}

.sidebar-right .content-area {
    flex-direction: row-reverse;
}
.sidebar-right .sidebar {
    border-right: none;
    border-left: 1px solid var(--border-color);
}
.sidebar-none .sidebar {
    display: none;
}
.sidebar-none .main-content {
    max-width: 800px;
    margin: 0 auto;
}

/* ==================== 侧边栏 LayUI 导航美化（二级菜单常开） ==================== */
.sidebar .layui-card {
    margin: 0;
    border: none;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
}

.sidebar .layui-card-header {
    height: 50px;
    line-height: 50px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-color);
    background-color: transparent;
    padding-left: 20px;
    margin: 0;
    text-align: left;
}

.sidebar .layui-nav.layui-nav-tree {
    background: transparent;
    border-radius: 0;
    padding: 0;
}

.sidebar .layui-nav .layui-nav-item {
    border-bottom: 1px dashed var(--border-color);
    margin: 0;
    line-height: 45px;
}

.sidebar .layui-nav .layui-nav-item:last-child {
    border-bottom: none;
}

.sidebar .layui-nav .layui-nav-item > a {
    color: var(--text-color);
    padding: 0 20px;
    height: 45px;
    line-height: 45px;
    font-size: 1.05rem;
    transition: all 0.2s;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: left;
}

.sidebar .layui-nav .layui-nav-item > a:hover {
    background-color: var(--primary-color);
    color: #fff !important;
}

/* 二级菜单 - 始终显示，无折叠效果 */
.sidebar .layui-nav .layui-nav-item .layui-nav-child {
    background: var(--bg-color);
    padding: 5px 0;
    position: static !important;      /* 移除绝对定位 */
    display: block !important;         /* 始终显示 */
    opacity: 1 !important;
    visibility: visible !important;
    max-height: none !important;       /* 移除最大高度限制 */
    overflow: visible !important;
    box-shadow: none;
    border: none;
}

.sidebar .layui-nav .layui-nav-item .layui-nav-child dd {
    display: block;
    width: 100%;
}

.sidebar .layui-nav .layui-nav-item .layui-nav-child a {
    padding-left: 40px;
    height: 40px;
    line-height: 40px;
    color: var(--text-muted);
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: left;
    transition: all 0.2s;
}

.sidebar .layui-nav .layui-nav-item .layui-nav-child a:hover {
    background-color: var(--primary-color);
    color: #fff;
}

/* 移除箭头（因为不需要点击展开） */
.sidebar .layui-nav .layui-nav-more {
    display: none !important;
}

/* ==================== 通用分类标题样式 ==================== */
.category-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin: 35px 0 18px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
    display: flex;
    align-items: center;
    color: var(--text-color);
}

.category-title .layui-icon {
    margin-right: 8px;
    color: var(--primary-color);
    font-size: 1.6rem;
}

.category-title .cat-count {
    font-size: 1rem;
    font-weight: normal;
    color: var(--text-muted);
    margin-left: 8px;
}

/* ==================== 首页文章列表 ==================== */
.post-item {
    padding: 1.2rem 0;
    border-bottom: 1px solid var(--border-color);
}
.post-item:last-child {
    border-bottom: none;
}
.post-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.3rem;
    font-weight: 500;
}
.post-item h3 a {
    color: var(--text-color);
}
.post-item h3 a:hover {
    color: var(--primary-color);
}

.post-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}
.post-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}
.layui-badge.layui-bg-orange {
    background-color: #e67e22 !important;
}

/* ==================== 文章页 ==================== */
.entry-header h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}
.entry-meta {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.entry-content {
    line-height: 1.8;
}
.entry-content h2, .entry-content h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
}
.entry-content img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

/* 下载按钮 */
.download-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-color);
    color: #fff !important;
    padding: 0.8rem 2rem;
    border-radius: 40px;
    font-weight: 500;
    margin: 2rem 0 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: background 0.2s, transform 0.2s;
}
.download-button:hover {
    background: #0056b3;
    transform: translateY(-2px);
    text-decoration: none;
}

/* PDF阅读器 */
.pdf-viewer {
    margin: 2rem 0;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}
.pdf-viewer iframe {
    width: 100%;
    height: 600px;
    border: none;
}

/* ==================== 面包屑 ==================== */
.layui-breadcrumb a,
.layui-breadcrumb cite {
    color: var(--text-muted) !important;
}
.layui-breadcrumb a:hover {
    color: var(--primary-color) !important;
}
.layui-breadcrumb span[lay-separator] {
    color: var(--text-muted) !important;
}

/* ==================== 分页 ==================== */
.pagination {
    margin-top: 2rem;
    text-align: center;
}
.pagination .page-numbers {
    display: inline-block;
    padding: 0.5rem 1rem;
    margin: 0 0.2rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
}
.pagination .current {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

/* ==================== 回到顶部 ==================== */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--surface-color);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: all 0.2s;
    z-index: 99;
}
#back-to-top:hover {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}
#back-to-top.show {
    display: flex;
}

/* ==================== 页脚 ==================== */
.site-footer {
    text-align: center;
    padding: 2rem;
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 2rem;
    width: 100%;
    clear: both;
    position: relative;
    left: 0;
    right: 0;
}

/* ==================== 搜索下拉框美化 ==================== */
.search-dropdown {
    display: none;
    padding: 20px;
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    animation: slideDown 0.2s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.search-dropdown .search-form {
    max-width: 600px;
    margin: 0 auto;
}

.search-dropdown .layui-input-group {
    display: flex;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: 30px;
    overflow: hidden;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--surface-color);
}

.search-dropdown .layui-input-group:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0,102,204,0.1);
}

.search-dropdown .layui-input {
    border: none;
    height: 46px;
    line-height: 46px;
    font-size: 1rem;
    padding: 0 20px;
    background: transparent;
    color: var(--text-color);
    border-radius: 30px 0 0 30px;
}

.search-dropdown .layui-btn {
    height: 46px;
    line-height: 46px;
    border: none;
    background: var(--primary-color);
    color: #fff;
    font-size: 1rem;
    padding: 0 25px;
    border-radius: 0 30px 30px 0;
    transition: background 0.2s;
    white-space: nowrap;
}

.search-dropdown .layui-btn:hover {
    background: #0056b3;
}

.search-dropdown .layui-input,
.search-dropdown .layui-btn {
    margin: 0;
    outline: none;
}

body.dark-mode .search-dropdown {
    background: #2d2d2d;
    border-top-color: #404040;
}
body.dark-mode .search-dropdown .layui-input-group {
    border-color: #555;
}
body.dark-mode .search-dropdown .layui-input {
    color: #e0e0e0;
}

/* ==================== 银行卡查询样式 ==================== */
.bank-query-container .layui-card {
    margin-bottom: 20px;
}
.bank-query-container .layui-card-header {
    font-weight: 600;
}
.bank-query-container .form-item {
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.bank-query-container .form-label {
    width: 100px;
    font-weight: 500;
    color: var(--text-color);
    flex-shrink: 0;
}
.bank-query-container .form-input {
    flex: 1;
}
.bank-query-container .form-input .layui-input {
    height: 46px;
    line-height: 46px;
    font-size: 1.1rem;
    width: 100%;
}
.bank-query-container .form-actions {
    display: flex;
    gap: 10px;
    margin-left: 110px;
}
.bank-query-container .query-btn, 
.bank-query-container .clear-btn {
    height: 46px;
    line-height: 46px;
    font-size: 1.1rem;
    padding: 0 30px;
}
.bank-query-container .query-btn {
    flex: 2;
}
.bank-query-container .clear-btn {
    flex: 1;
}
#resultBody table {
    width: 100%;
    border-collapse: collapse;
}
#resultBody td {
    padding: 12px 10px;
    border-bottom: 1px solid var(--border-color);
}
#resultBody tr td:first-child {
    font-weight: 600;
    width: 120px;
    background: rgba(0,0,0,0.02);
}
@media (max-width: 768px) {
    .bank-query-container .form-item {
        flex-direction: column;
        align-items: stretch;
        gap: 5px;
    }
    .bank-query-container .form-label {
        width: auto;
        margin-bottom: 5px;
    }
    .bank-query-container .form-actions {
        margin-left: 0;
        flex-direction: column;
        gap: 10px;
    }
    .bank-query-container .query-btn, 
    .bank-query-container .clear-btn {
        width: 100%;
        flex: none;
    }
    #resultBody td {
        padding: 10px 8px;
        font-size: 0.95rem;
    }
    #resultBody tr td:first-child {
        width: 100px;
    }
}
body.dark-mode .bank-query-container .form-label {
    color: var(--text-color);
}
body.dark-mode #resultBody tr td:first-child {
    background: rgba(255,255,255,0.05);
}

/* ==================== 深色模式增强修复 ==================== */
body.dark-mode .entry-content,
body.dark-mode .entry-content p,
body.dark-mode .entry-content span,
body.dark-mode .entry-content div:not(.download-button):not(.layui-badge) {
    color: var(--text-color);
}
body.dark-mode .entry-content h1,
body.dark-mode .entry-content h2,
body.dark-mode .entry-content h3,
body.dark-mode .entry-content h4,
body.dark-mode .entry-content h5 {
    color: #ffffff;
}
body.dark-mode .entry-content a:not(.download-button) {
    color: #80c0ff;
}
body.dark-mode .entry-content a:hover {
    color: #a0d0ff;
}
body.dark-mode .entry-content code,
body.dark-mode .entry-content pre {
    background: #3a3a3a;
    color: #e0e0e0;
    border-color: #555;
}
body.dark-mode .entry-content blockquote {
    border-left-color: var(--primary-color);
    background: #2a2a2a;
    color: #ccc;
}
body.dark-mode .entry-content table,
body.dark-mode .entry-content th,
body.dark-mode .entry-content td {
    border-color: #444;
}
body.dark-mode .entry-content th {
    background: #333;
}
body.dark-mode .entry-content li {
    color: var(--text-color);
}

/* ==================== 导航文字颜色强制修复 ==================== */
.site-header .layui-nav .layui-nav-item > a {
    color: #2c3e50 !important;
}
.sidebar .layui-nav .layui-nav-item > a {
    color: #2c3e50 !important;
}
.site-header .layui-nav .layui-nav-item > a:hover,
.sidebar .layui-nav .layui-nav-item > a:hover {
    color: var(--primary-color) !important;
    background: transparent !important;
}
.site-header .layui-nav .layui-nav-item.layui-this > a,
.sidebar .layui-nav .layui-nav-item.layui-this > a {
    color: var(--primary-color) !important;
}
body.dark-mode .site-header .layui-nav .layui-nav-item > a,
body.dark-mode .sidebar .layui-nav .layui-nav-item > a {
    color: #e0e0e0 !important;
}