/* ============================================
   AetherGate 官方网站样式表
   ============================================ */

/* 全局重置与基础样式 */
* { margin: 0; padding: 0; box-sizing: border-box; }

/* CSS 变量定义 - 主题颜色与布局参数 */
:root {
  --color-primary: #3b82f6;              /* 主色调 - 蓝色 */
  --color-primary-dark: #2563eb;         /* 主色深色 */
  --color-primary-light: #60a5fa;        /* 主色浅色 */
  --color-bg: #fafafa;                   /* 页面背景色 */
  --color-bg-secondary: #f5f5f5;         /* 次要背景色 */
  --color-text: #1f2937;                 /* 主文字颜色 */
  --color-text-secondary: #6b7280;        /* 次要文字颜色 */
  --color-text-light: #9ca3af;           /* 浅色文字 */
  --color-border: #e5e7eb;               /* 边框颜色 */
  --color-card: #ffffff;                 /* 卡片背景 */
  --color-code-bg: #f3f4f6;              /* 代码块背景 */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);      /* 小阴影 */
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);     /* 中阴影 */
  --shadow-lg: 0 8px 30px rgba(59, 130, 246, 0.1); /* 大阴影 */
  --radius-sm: 6px;                      /* 小圆角 */
  --radius-md: 10px;                     /* 中圆角 */
  --radius-lg: 16px;                     /* 大圆角 */
  --max-width: 1200px;                   /* 最大宽度 */
  --transition: 0.2s ease;               /* 过渡动画 */
}

/* 平滑滚动 */
html { scroll-behavior: smooth; }

/* 页面主体样式 */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

/* 链接样式 */
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }

/* 图片自适应 */
img { max-width: 100%; display: block; }

/* 容器宽度限制 */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   头部导航
   ============================================ */

/* 网站头部 - 粘性定位 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

/* 导航栏布局 */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

/* Logo区域 */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
}

.nav-logo:hover { color: var(--color-text); }

/* Logo图片 */
.logo-img {
  height: 48px;
  width: auto;
  max-width: 120px;
  border-radius: 6px;
  object-fit: contain;
}

/* 导航菜单 */
.nav-menu {
  display: flex;
  list-style: none;
  gap: 8px;
}

/* 导航链接 */
.nav-link {
  display: block;
  padding: 8px 16px;
  color: var(--color-text-secondary);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-link:hover {
  color: var(--color-text);
  background: var(--color-bg-secondary);
}

.nav-link.active {
  color: var(--color-primary);
  background: rgba(59, 130, 246, 0.1);
}

/* 导航右侧操作区 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ============================================
   按钮样式
   ============================================ */

/* 基础按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

/* 按钮尺寸变体 */
.btn-sm { padding: 6px 16px; font-size: 14px; }
.btn-lg { padding: 14px 32px; font-size: 17px; }

/* 主按钮 */
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
}

/* 轮廓按钮 */
.btn-outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* 块级按钮 */
.btn-block { width: 100%; }

/* ============================================
   首页英雄区
   ============================================ */

/* 英雄区主容器 */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg) 100%);
  position: relative;
  overflow: hidden;
}

/* 背景装饰 */
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 30%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 70%, rgba(147, 197, 253, 0.08) 0%, transparent 50%);
  animation: gradient-shift 15s ease infinite;
  pointer-events: none;
}

/* 背景动画 */
@keyframes gradient-shift {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(2%, 2%); }
}

/* 英雄区徽章 */
.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--color-primary);
  background: rgba(59, 130, 246, 0.1);
  border-radius: 20px;
  margin-bottom: 24px;
  font-weight: 500;
}

/* 英雄区标题 */
.hero h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--color-text), var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 英雄区描述 */
.hero p {
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
}

/* 英雄区按钮组 */
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 英雄区统计数据 */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 60px;
  flex-wrap: wrap;
}

/* 单个统计项 */
.hero-stat {
  text-align: center;
}

.hero-stat-num {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text);
}

.hero-stat-label {
  font-size: 14px;
  color: var(--color-text-light);
  margin-top: 4px;
}

/* ============================================
   通用区块样式
   ============================================ */

/* 标准区块 */
.section {
  padding: 80px 0;
}

/* 交替背景区块 */
.section-alt {
  background: var(--color-bg-secondary);
}

/* 区块标题 */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* ============================================
   功能特性网格
   ============================================ */

/* 三列网格布局 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* 功能卡片 */
.feature-card {
  padding: 32px;
  background: var(--color-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

/* 功能图标容器 */
.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 24px;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.25);
}

/* 图标内的图片 */
.feature-icon img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

/* 卡片标题 */
.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}

/* 卡片描述 */
.feature-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ============================================
   下载页面样式
   ============================================ */

/* 下载区块 */
.download-section {
  padding: 60px 0;
}

/* 下载卡片 */
.download-card {
  max-width: 800px;
  margin: 0 auto;
  background: var(--color-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 48px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.download-card h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

/* 版本信息 */
.download-card .version-info {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

/* 下载按钮组 */
.download-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

/* 下载元信息 */
.download-meta {
  display: flex;
  justify-content: center;
  gap: 4px;
  font-size: 14px;
  color: var(--color-text-secondary);
  flex-wrap: wrap;
}

/* 平台标签 */
.download-platforms {
  margin-top: 32px;
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

/* 平台徽章 */
.platform-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* 下载统计信息 */
.download-stats {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-secondary);
  flex-wrap: wrap;
  margin-top: 20px;
}

/* SHA256 哈希值 */
.download-stats .sha256 {
  width: 100%;
  margin-top: 4px;
  text-align: center;
}

.download-stats .sha256 code {
  font-size: 12px;
  font-family: monospace;
  word-break: break-all;
}

/* 更新说明区域 */
.download-release-notes {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  text-align: left;
}

.download-release-notes h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}

.download-release-notes .notes-content {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* 版本历史区域 */
.version-history {
  margin-top: 64px;
}

.version-history h2 {
  font-size: 24px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 32px;
}

/* 版本列表 */
.version-list {
  max-width: 800px;
  margin: 0 auto;
}

/* 单个版本项 */
.version-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 16px;
}

/* 版本头部 */
.version-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 12px;
}

/* 版本标题 */
.version-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.version-title strong {
  font-size: 18px;
}

/* 版本标签 */
.version-badge {
  padding: 2px 10px;
  font-size: 12px;
  border-radius: 12px;
}

.version-badge.prerelease {
  background: #fef3c7;
  color: #92400e;
}

.version-badge.stable {
  background: #dcfce7;
  color: #166534;
}

/* 版本日期 */
.version-date {
  font-size: 14px;
  color: var(--color-text-light);
}

/* 版本更新说明 */
.version-notes {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

/* 版本操作按钮 */
.version-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ============================================
   文档页面样式
   ============================================ */

/* 文档布局 - 侧边栏+内容区 */
.docs-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  padding: 40px 0;
}

/* 文档侧边栏 */
.docs-sidebar {
  position: sticky;
  top: 80px;
  align-self: start;
}

.docs-sidebar h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  padding: 0 8px;
}

.docs-sidebar ul {
  list-style: none;
  margin-bottom: 24px;
}

/* 侧边栏链接 */
.docs-sidebar li a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.docs-sidebar li a:hover,
.docs-sidebar li a.active {
  color: var(--color-primary);
  background: rgba(59, 130, 246, 0.1);
}

/* 文档内容区 */
.docs-content {
  min-width: 0;
}

.docs-content h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.docs-content h2 {
  font-size: 24px;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 16px;
}

.docs-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin-top: 24px;
  margin-bottom: 12px;
}

.docs-content p {
  margin-bottom: 16px;
  color: var(--color-text-secondary);
}

.docs-content ul,
.docs-content ol {
  margin-bottom: 16px;
  padding-left: 24px;
  color: var(--color-text-secondary);
}

.docs-content li { margin-bottom: 8px; }

/* 代码块 */
.docs-content pre {
  background: var(--color-code-bg);
  padding: 16px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin-bottom: 16px;
  font-size: 14px;
  line-height: 1.6;
}

/* 行内代码 */
.docs-content code {
  background: var(--color-code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.docs-content pre code {
  background: none;
  padding: 0;
}

/* 引用块 */
.docs-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 12px 20px;
  background: var(--color-bg-secondary);
  margin-bottom: 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.docs-content blockquote p {
  margin: 0;
  color: var(--color-text-secondary);
}

/* 分隔线 */
.docs-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 24px 0;
}

/* Markdown 表格 */
.md-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
  overflow-x: auto;
  display: block;
}

.md-table thead,
.md-table tbody {
  display: table;
  width: 100%;
  table-layout: fixed;
}

.md-table th,
.md-table td {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  text-align: left;
  word-break: break-word;
}

.md-table th {
  background: var(--color-bg-secondary);
  font-weight: 600;
}

.md-table tbody tr:nth-child(even) {
  background: var(--color-bg-secondary);
}

.md-table img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

/* 行内代码 */
.docs-content code {
  word-break: break-all;
}

/* 删除线 */
.docs-content del {
  color: var(--color-text-secondary);
}

/* 警告框 */
.docs-content .alert {
  padding: 16px;
  margin: 16px 0;
  border-radius: var(--radius-md);
  border-left: 4px solid;
}

.alert-warning {
  background: rgba(251, 191, 36, 0.1);
  border-color: #fbbf24;
  color: #92400e;
}

.alert-info {
  background: rgba(59, 130, 246, 0.1);
  border-color: #3b82f6;
  color: #1e40af;
}

.alert-success {
  background: rgba(34, 197, 94, 0.1);
  border-color: #22c55e;
  color: #166534;
}

.alert-error,
.alert-danger {
  background: rgba(239, 68, 68, 0.1);
  border-color: #ef4444;
  color: #991b1b;
}

/* 公式块 */
.docs-content .math-block {
  background: var(--color-bg-secondary);
  padding: 16px 20px;
  margin: 16px 0;
  border-radius: var(--radius-md);
  font-family: 'Times New Roman', serif;
  font-style: italic;
  text-align: center;
  overflow-x: auto;
}

/* 任务列表 */
.docs-content .task-list {
  list-style: none;
  padding-left: 0;
}

.docs-content .task-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  cursor: default;
}

.docs-content .task-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.docs-content .task-item input[type="checkbox"]:checked + * {
  color: var(--color-text-secondary);
  text-decoration: line-through;
}

/* ============================================
   FAQ 页面样式
   ============================================ */

/* FAQ区块 */
.faq-section {
  padding: 40px 0 80px;
  max-width: 800px;
  margin: 0 auto;
}

.faq-section h1 {
  font-size: 32px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
}

.faq-section > p {
  text-align: center;
  color: var(--color-text-secondary);
  margin-bottom: 48px;
}

/* FAQ 单项 */
.faq-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition);
}

.faq-item:hover {
  border-color: var(--color-primary-light);
}

/* FAQ 问题 */
.faq-question {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-question::after {
  content: '+';
  font-size: 20px;
  color: var(--color-text-light);
  transition: transform var(--transition);
  font-weight: 300;
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
  color: var(--color-primary);
}

/* FAQ 答案 */
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 600px;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.7;
}

.faq-answer-inner p { margin-bottom: 12px; }
.faq-answer-inner p:last-child { margin-bottom: 0; }

/* ============================================
   页脚样式
   ============================================ */

/* 网站页脚 */
.site-footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 24px;
  margin-top: 80px;
}

/* 页脚网格 */
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 32px;
}

/* 页脚标题 */
.footer-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-title .logo-img {
  height: 20px;
  width: auto;
  max-width: 80px;
  border-radius: 4px;
  object-fit: contain;
}

/* 页脚描述 */
.footer-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* 页脚链接列表 */
.footer-links {
  list-style: none;
}

.footer-links li { margin-bottom: 10px; }

.footer-links a {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.footer-links a:hover {
  color: var(--color-primary);
}

/* 页脚底部 */
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 13px;
  color: var(--color-text-light);
}

.beian-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  margin-top: 8px;
}

.beian-links a {
  display: inline-flex;
  align-items: center;
}

.beian-links .ga-beian-icon,
.beian-links .icp-beian-icon {
  margin-right: 4px;
  height: 14px;
  width: auto;
}

/* ============================================
   后台管理页面样式
   ============================================ */

/* 后台主体 */
.admin-body {
  background: var(--color-bg-secondary);
  min-height: 100vh;
}

/* 后台头部 */
.admin-header {
  background: #1a1a1a;
  color: #fff;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.admin-header .brand {
  font-size: 18px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 后台Logo */
.admin-logo {
  height: 20px;
  width: auto;
  max-width: 70px;
  border-radius: 4px;
  object-fit: contain;
}

/* 后台用户信息 */
.admin-header .user-info {
  font-size: 14px;
  color: #ccc;
}

.admin-header .user-info a {
  color: #ccc;
  margin-left: 16px;
}

/* 后台布局 */
.admin-layout {
  display: flex;
  min-height: calc(100vh - 56px);
}

/* 后台侧边栏 */
.admin-sidebar {
  width: 200px;
  background: #2a2a2a;
  padding: 16px 0;
}

.admin-sidebar ul { list-style: none; }

.admin-sidebar a {
  display: block;
  padding: 12px 24px;
  color: #ccc;
  font-size: 14px;
  transition: all var(--transition);
}

.admin-sidebar a:hover,
.admin-sidebar a.active {
  background: #3a3a3a;
  color: #fff;
}

/* 后台内容区 */
.admin-content {
  flex: 1;
  padding: 24px;
}

/* 后台卡片 */
.admin-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.admin-card h2 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

/* 后台表格 */
.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
}

.admin-table th {
  background: var(--color-bg-secondary);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.admin-table tr:hover { background: var(--color-bg-secondary); }

/* 后台表单 */
.admin-form .form-group {
  margin-bottom: 16px;
}

.admin-form label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--color-text);
}

/* 表单输入控件 */
.admin-form input[type="text"],
.admin-form input[type="password"],
.admin-form input[type="number"],
.admin-form input[type="date"],
.admin-form select,
.admin-form textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  transition: border-color var(--transition);
}

/* 表单聚焦状态 */
.admin-form input:focus,
.admin-form select:focus,
.admin-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* 文本域 */
.admin-form textarea {
  resize: vertical;
  min-height: 120px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
  line-height: 1.6;
}

/* 表单行 */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* 表单操作按钮 */
.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

/* 提示框 */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 14px;
}

.alert-success {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.alert-error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

/* 危险按钮 */
.btn-danger {
  background: #dc2626;
  color: #fff;
  border-color: #dc2626;
}

.btn-danger:hover {
  background: #b91c1c;
  border-color: #b91c1c;
  color: #fff;
}

/* 链接按钮 */
.btn-link {
  background: none;
  border: none;
  padding: 0;
  color: var(--color-primary);
  cursor: pointer;
  font-size: 14px;
}

.btn-link:hover { color: var(--color-primary-dark); }

.btn-link.btn-danger-link {
  color: #dc2626;
}

.btn-link.btn-danger-link:hover { color: #b91c1c; }

/* 操作按钮组 */
.action-btns {
  display: flex;
  gap: 12px;
}

/* ============================================
   登录页面样式
   ============================================ */

/* 登录容器 */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #ff8c00 0%, #ffa940 100%);
  padding: 24px;
}

/* 登录卡片 */
.login-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
}

.login-card h1 {
  font-size: 24px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
}

.login-card .subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 14px;
  margin-bottom: 32px;
}

.login-card .form-group { margin-bottom: 16px; }

.login-card label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
}

.login-card input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  transition: border-color var(--transition);
}

.login-card input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.1);
}

.login-card .btn { width: 100%; margin-top: 8px; }

/* ============================================
   响应式布局
   ============================================ */

/* 中等屏幕 */
@media (max-width: 968px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .docs-layout { grid-template-columns: 1fr; gap: 24px; }
  .docs-sidebar { position: static; }
  .admin-layout { flex-direction: column; }
  .admin-sidebar { width: 100%; padding: 8px; }
  .admin-sidebar ul { display: flex; flex-wrap: wrap; }
  .admin-sidebar a { padding: 8px 16px; }
}

/* 小屏幕 */
@media (max-width: 768px) {
  .hero h1 { font-size: 32px; }
  .hero p { font-size: 16px; }
  .hero-stats { gap: 24px; }
  .hero-stat-num { font-size: 24px; }
  .section { padding: 48px 0; }
  .section-header h2 { font-size: 24px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  
  /* 移动端菜单 */
  .nav-menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }
  .nav-menu.show { display: flex; }
  .nav-actions { display: none; }
  .nav-toggle { display: flex; }
  
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
  .download-card { padding: 32px 24px; }
  .download-card h2 { font-size: 22px; }
  .form-row { grid-template-columns: 1fr; }
}
/* ============================================
   南京大屠杀死难者国家公祭日悼念模态框
   ============================================ */
.memorial-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  width: 100vw;
  height: 100%;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  z-index: 99999;
  align-items: center;
  justify-content: center;
  padding: 20px;
  box-sizing: border-box;
  animation: memorial-fade-in 0.3s ease;
}

@keyframes memorial-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.memorial-card {
  background: #ffffff;
  border-radius: 12px;
  max-width: 480px;
  width: 100%;
  padding: 40px 36px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: memorial-slide-up 0.4s ease;
  position: relative;
}

.memorial-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #1f2937, #4b5563, #1f2937);
  border-radius: 12px 12px 0 0;
}

@keyframes memorial-slide-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.memorial-title {
  font-size: 20px;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 24px;
  line-height: 1.4;
  letter-spacing: 0.5px;
}

.memorial-body {
  margin-bottom: 32px;
}

.memorial-body p {
  font-size: 14px;
  line-height: 1.9;
  color: #4b5563;
  margin-bottom: 12px;
}

.memorial-body p:last-child {
  margin-bottom: 0;
}

.memorial-signature {
  margin-top: 20px;
  text-align: right;
  font-size: 13px;
  color: #6b7280;
  font-style: italic;
}

.memorial-btn {
  display: inline-block;
  padding: 12px 32px;
  background: #374151;
  color: #ffffff;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
  font-family: inherit;
  letter-spacing: 1px;
}

.memorial-btn:hover {
  background: #1f2937;
}

.memorial-btn:active {
  transform: scale(0.98);
}

@media (max-width: 500px) {
  .memorial-card {
    padding: 32px 24px;
  }
  .memorial-title {
    font-size: 18px;
  }
  .memorial-body p {
    font-size: 13px;
    line-height: 1.8;
  }
}