:root {
  /* 定义一个衬线字体栈 */
  --font-serif-zh: "SimSun","Noto Serif SC", "Georgia",  "STSong", "Songti SC", serif;
}

body {
  /* 全站应用 */
  font-family: var(--font-serif-zh);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #262626; /* 衬线体配合深灰色阅读感更好 */
}

/* ========== 强制隐藏模板容器 ========== */
#mobile-drawer-template {
    display: none !important;
    visibility: hidden !important;
    position: absolute !important;
    pointer-events: none !important;
}

/* ========== 桌面端导航样式 ========== */
@media (min-width: 768px) {
    /* 强制隐藏移动端元素 */
    #mobile-menu-trigger,
    #mobile-sidebar-overlay,
    #mobile-sidebar-overlay-active {
        display: none !important;
    }
    
    /* 桌面端导航居中 */
    nav .hidden.md\\:flex.items-center.justify-center nav,
    nav .hidden.md\\:flex.items-center.justify-center .nav {
        display: flex !important;
        justify-content: center !important;
        align-items: center !important;
        gap: 2rem !important;
    }
    
    nav .hidden.md\\:flex.items-center.justify-center ul {
        display: flex !important;
        flex-direction: row !important;
        gap: 2rem !important;
        list-style: none !important;
        padding: 0 !important;
        margin: 0 !important;
    }
    
    nav .hidden.md\\:flex.items-center.justify-center li {
        margin: 0 !important;
    }
    
    nav .hidden.md\\:flex.items-center.justify-center a {
        text-decoration: none !important;
        color: #374151 !important;
        font-weight: 500 !important;
        font-size: 0.875rem !important;
        transition: color 0.2s !important;
    }
    
    nav .hidden.md\\:flex.items-center.justify-center a:hover {
        color: #2563eb !important;
    }
}

/* ========== 移动端抽屉基础样式 ========== */
#mobile-sidebar-overlay-active {
    display: none; /* 默认隐藏，通过 JS 控制显示 */
}

/* ========== 抽屉导航网格布局 ========== */
.mobile-nav-grid {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.75rem !important;
}

.mobile-nav-grid nav,
.mobile-nav-grid .nav {
    display: contents !important;
}

.mobile-nav-grid ul {
    display: contents !important;
    list-style: none !important;
    padding: 0 !important;
    margin: 0 !important;
}

.mobile-nav-grid li {
    display: block !important;
    margin: 0 !important;
}

.mobile-nav-grid a {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 0.75rem !important;
    border-radius: 0.5rem !important;
    background-color: #f9fafb !important;
    color: #4b5563 !important;
    font-weight: 500 !important;
    text-decoration: none !important;
    border: 1px solid #e5e7eb !important;
    transition: all 0.2s !important;
    font-size: 0.875rem !important;
    text-align: center !important;
}

.mobile-nav-grid a:hover,
.mobile-nav-grid a:active {
    background-color: #eff6ff !important;
    color: #2563eb !important;
    border-color: #3b82f6 !important;
    transform: scale(0.95);
}

/* ========== 动画和过渡 ========== */
.drawer-backdrop {
    transition: opacity 300ms ease-out;
}

.drawer-panel {
    transition: transform 300ms ease-out;
}

/* ========== 通用优化 ========== */
#mobile-menu-trigger {
    cursor: pointer;
    background: none;
    border: none;
}

/* 平滑滚动 */
.drawer-panel {
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
}

/* 防止内容抖动 */
body.drawer-open {
    overflow: hidden !important;
    position: fixed !important;
    width: 100% !important;
}

/* 确保抽屉在最顶层 */
#mobile-sidebar-overlay-active {
    z-index: 9999 !important;
}

#welcome-ip-location-info b {
        color: #2563eb; /* 对应 Tailwind 的 blue-600 */
        font-weight: 700;
    }
/* 默认模糊状态 */
#welcome-ip-location-info .ip-mask {
    filter: blur(5px);
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    background-color: rgba(0, 0, 0, 0.05);
    padding: 0 4px;
    border-radius: 4px;
    user-select: none; /* 防止未解锁前被选中复制 */
}

/* 鼠标悬停时轻微减少模糊（给予视觉反馈） */
#welcome-ip-location-info .ip-mask:hover {
    filter: blur(3px);
    background-color: rgba(0, 0, 0, 0.08);
}

/* 点击或被激活时完全显示 */
#welcome-ip-location-info .ip-mask.unmask,
#welcome-ip-location-info .ip-mask:active {
    filter: blur(0);
    background-color: transparent;
    user-select: auto;
}

.site-footer {
    padding: 60px 20px;
    background: #f9f9f9; /* 浅灰背景，简洁干净 */
    color: #555;
    font-size: 0.9rem;
    border-top: 1px solid #eee;
    margin-top: 80px;
}

.footer-content {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr; /* 三栏布局 */
    gap: 40px;
}

.footer-column h3, .footer-column h4 {
    color: #111;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.footer-column p { line-height: 1.6; }

/* 微信公众号悬浮交互 */
.wechat-trigger {
    color: #1a73e8;
    cursor: pointer;
    position: relative;
    border-bottom: 1px dashed #1a73e8;
}

/* 弹出层容器 */
.wechat-qr {
    display: none;
    position: absolute;
    bottom: 35px;
    left: 50%;
    transform: translateX(-50%); /* 配合 left: 50% 实现相对于文字水平居中 */
    background: white;
    padding: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    border-radius: 8px;
    z-index: 100;

    width: 140px; 
    text-align: center !important; 
    box-sizing: border-box; /* 确保 padding 不撑破宽度 */
}

/* 二维码图片 */
.wechat-qr img {
    width: 100% !important;
    height: auto !important;
    display: block;
    margin: 0 auto 10px; /* 这里的 auto 确保图片在容器内水平居中 */
}

/* 下方的文字 */
.wechat-qr p {
    font-size: 12px;
    color: #666;
    margin: 0 !important;
    padding: 0 !important;
    display: block;
    width: 100%;
    text-align: center; /* 确保文字在 p 标签内居中 */
    line-height: 1.2;
    white-space: nowrap; /* 避免文字太长换行导致视觉偏移 */
}
.wechat-trigger:hover .wechat-qr { display: block; }

/* 次级导航样式 */
.footer-nav ul { list-style: none; padding: 0; }
.footer-nav ul li { margin-bottom: 8px; }
.footer-nav a { color: #555; text-decoration: none; }
.footer-nav a:hover { color: #1a73e8; }

/* 移动端适配 */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .wechat-qr { left: 50%; }
}

/* 确保整个头部在滚动时固定 */
.site-header-container {
    position: sticky !important;
    top: 0 !important;
    z-index: 1000 !important;
    width: 100%;
}

/* 公告栏样式优化 */
.gh-announcement {
    background-color: var(--ghost-accent-color, #3eb0ef);
    color: #fff;
    padding: 10px 24px;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 500;
    line-height: 1.4;
}

.gh-announcement a {
    color: #fff;
    text-decoration: underline;
    font-weight: 700;
}

/* 修复移动端抽屉层级，确保在 header 之上 */
#mobile-sidebar-overlay {
    z-index: 10001 !important;
}