/*
Theme Name: TianrenX-Legend MDUI Pro
Theme URI: https://www.tianrenx.com/
Description: 天人有序主题 - MDUI 2.0 专业美化版
Version: 2.5
Author: 天人有序
*/

/* 引入MDUI字体和图标 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/icon?family=Material+Icons+Round');

/* MDUI设计变量 - 统一渐变配色 */
:root {
  /* 主色调 - 蓝色渐变 */
  --mdui-primary: #3B82F6;
  --mdui-primary-gradient: linear-gradient(135deg, #3B82F6 0%, #1E40AF 100%);
  --mdui-primary-light: #60A5FA;
  --mdui-on-primary: #FFFFFF;
  
  /* 表面色调 - 白色渐变 */
  --mdui-surface: #FFFFFF;
  --mdui-surface-variant: #F8FAFC;
  --mdui-on-surface: #1E293B;
  --mdui-on-surface-variant: #64748B;
  
  /* 背景色调 - 浅蓝渐变 */
  --mdui-background: #F1F5F9;
  --mdui-background-gradient: linear-gradient(135deg, #F1F5F9 0%, #E2E8F0 100%);
  
  /* 成功/警告/错误色 - 渐变 */
  --mdui-success: linear-gradient(135deg, #10B981 0%, #059669 100%);
  --mdui-warning: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
  --mdui-error: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
  
  /* 圆角 */
  --mdui-corner-small: 6px;
  --mdui-corner-medium: 8px;
  --mdui-corner-large: 12px;
  --mdui-corner-extra-large: 16px;
  --mdui-corner-full: 9999px;
  
  /* 阴影 */
  --mdui-elevation-1: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --mdui-elevation-2: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --mdui-elevation-3: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  
  /* 动画 */
  --mdui-duration-short: 200ms;
  --mdui-duration-medium: 300ms;
  --mdui-duration-long: 500ms;
  --mdui-easing-standard: cubic-bezier(0.4, 0, 0.2, 1);
}

/* 深色模式变量 - 深色渐变 */
[data-theme="dark"] {
  --mdui-primary: #60A5FA;
  --mdui-primary-gradient: linear-gradient(135deg, #60A5FA 0%, #3B82F6 100%);
  --mdui-primary-light: #93C5FD;
  
  --mdui-surface: #1E293B;
  --mdui-surface-variant: #334155;
  --mdui-on-surface: #F1F5F9;
  --mdui-on-surface-variant: #94A3B8;
  
  --mdui-background: #0F172A;
  --mdui-background-gradient: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  
  --mdui-success: linear-gradient(135deg, #34D399 0%, #10B981 100%);
  --mdui-warning: linear-gradient(135deg, #FBBF24 0%, #F59E0B 100%);
  --mdui-error: linear-gradient(135deg, #F87171 0%, #EF4444 100%);
}

/* 基础重置和全局样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  color: var(--mdui-on-surface);
  background: var(--mdui-background);
  min-height: 100vh;
  transition: all var(--mdui-duration-medium) var(--mdui-easing-standard);
}

/* 布局容器 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 顶部导航栏 - 渐变设计 */
.site-header {
  background: var(--mdui-surface);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--mdui-duration-medium) var(--mdui-easing-standard);
  box-shadow: var(--mdui-elevation-1);
}

[data-theme="dark"] .site-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-header.scrolled {
  padding: 12px 0;
  box-shadow: var(--mdui-elevation-2);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo区域 */
.logo-wrap {
  display: flex;
  align-items: flex-end;
  gap: 16px;
}

.logo-image {
  display: flex;
  align-items: center;
}

.logo-image img {
  height: 36px;
  width: auto;
  border-radius: var(--mdui-corner-small);
}

.title-group {
  display: flex;
  align-items: flex-end;
  gap: 12px;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
  color: var(--mdui-on-surface);
  transition: color var(--mdui-duration-medium) var(--mdui-easing-standard);
}

.site-title a {
  color: inherit;
  text-decoration: none;
  transition: all var(--mdui-duration-short) var(--mdui-easing-standard);
}

.site-title a:hover {
  color: var(--mdui-primary);
}

.site-description {
  font-size: 0.875rem;
  color: var(--mdui-on-surface-variant);
  margin: 0 0 2px 0;
  font-weight: 400;
}

/* 主导航菜单 */
.main-navigation {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 4px;
  margin: 0;
  padding: 0;
}

.nav-menu a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  color: var(--mdui-on-surface-variant);
  text-decoration: none;
  font-weight: 500;
  border-radius: var(--mdui-corner-full);
  transition: all var(--mdui-duration-short) var(--mdui-easing-standard);
  position: relative;
  overflow: hidden;
}

.nav-menu a::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--mdui-primary-gradient);
  opacity: 0;
  transition: opacity var(--mdui-duration-short) var(--mdui-easing-standard);
  border-radius: inherit;
}

.nav-menu a:hover::before {
  opacity: 0.1;
}

.nav-menu a:hover {
  color: var(--mdui-primary);
}

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

.nav-menu a .material-icons-round {
  font-size: 1.125rem;
}

/* 导航工具按钮 */
.nav-tools {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-btn, .menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--mdui-surface-variant);
  border-radius: var(--mdui-corner-full);
  color: var(--mdui-on-surface-variant);
  cursor: pointer;
  transition: all var(--mdui-duration-short) var(--mdui-easing-standard);
  position: relative;
  overflow: hidden;
}

.nav-btn:hover, .menu-toggle:hover {
  background: var(--mdui-primary-gradient);
  color: white;
  border-color: var(--mdui-primary);
  transform: translateY(-1px);
}

.nav-btn .material-icons-round, .menu-toggle .material-icons-round {
  font-size: 1.25rem;
}

.menu-toggle {
  display: none;
}

/* 搜索模态框 */
.search-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transition: all var(--mdui-duration-medium) var(--mdui-easing-standard);
  padding-top: 120px;
}

.search-modal.active {
  opacity: 1;
  visibility: visible;
}

.search-form {
  width: 90%;
  max-width: 600px;
  background: var(--mdui-surface);
  border-radius: var(--mdui-corner-large);
  padding: 24px;
  box-shadow: var(--mdui-elevation-3);
  transform: translateY(-20px) scale(0.95);
  transition: all var(--mdui-duration-medium) var(--mdui-easing-standard);
  border: 1px solid var(--mdui-surface-variant);
}

.search-modal.active .search-form {
  transform: translateY(0) scale(1);
}

.search-input {
  width: 100%;
  padding: 14px 16px;
  font-size: 1rem;
  border: 1px solid var(--mdui-surface-variant);
  border-radius: var(--mdui-corner-medium);
  background: var(--mdui-surface);
  color: var(--mdui-on-surface);
  outline: none;
  transition: all var(--mdui-duration-short) var(--mdui-easing-standard);
}

.search-input:focus {
  border-color: var(--mdui-primary);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.search-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--mdui-surface-variant);
  border: none;
  color: var(--mdui-on-surface);
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: var(--mdui-corner-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--mdui-duration-short) var(--mdui-easing-standard);
}

.search-close:hover {
  background: var(--mdui-primary-gradient);
  color: white;
}

/* 主内容区域 */
.site-content {
  margin-top: 80px;
  padding: 32px 0;
}

/* MDUI卡片组件 */
.card {
  background: var(--mdui-surface);
  border-radius: var(--mdui-corner-large);
  box-shadow: var(--mdui-elevation-1);
  padding: 24px;
  margin-bottom: 20px;
  transition: all var(--mdui-duration-medium) var(--mdui-easing-standard);
  border: 1px solid var(--mdui-surface-variant);
}

.card:hover {
  box-shadow: var(--mdui-elevation-2);
  transform: translateY(-2px);
}

/* 文章标题效果 - 增强悬浮和滑过效果 */
.entry-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--mdui-on-surface);
  line-height: 1.3;
  position: relative;
  transition: all var(--mdui-duration-medium) var(--mdui-easing-standard);
}

.entry-title a {
  color: inherit;
  text-decoration: none;
  transition: all var(--mdui-duration-medium) var(--mdui-easing-standard);
  position: relative;
  display: inline-block;
  background: linear-gradient(135deg, var(--mdui-primary) 0%, var(--mdui-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.entry-title a::before {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--mdui-primary-gradient);
  transition: width var(--mdui-duration-medium) var(--mdui-easing-standard);
  border-radius: 1px;
}

.entry-title a:hover {
  transform: translateY(-2px);
}

.entry-title a:hover::before {
  width: 100%;
}

.entry-title:hover {
  transform: translateX(4px);
}

.entry-content {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--mdui-on-surface-variant);
}

.entry-content p {
  margin-bottom: 1em;
}

.entry-content h1,
.entry-content h2,
.entry-content h3,
.entry-content h4 {
  margin: 1.5em 0 0.75em;
  color: var(--mdui-on-surface);
  font-weight: 600;
  transition: all var(--mdui-duration-short) var(--mdui-easing-standard);
}

.entry-content h1:hover,
.entry-content h2:hover,
.entry-content h3:hover,
.entry-content h4:hover {
  color: var(--mdui-primary);
  transform: translateX(2px);
}

.entry-content h1 { font-size: 1.5rem; }
.entry-content h2 { font-size: 1.375rem; }
.entry-content h3 { font-size: 1.25rem; }
.entry-content h4 { font-size: 1.125rem; }

/* 列表样式 */
.entry-content ol,
.entry-content ul {
  padding-left: 2.2em;
  margin-bottom: 1.5em;
  margin-top: 0.5em;
}

.entry-content ol li,
.entry-content ul li {
  margin-bottom: 0.4em;
  line-height: 1.6;
  padding-left: 0.5em;
  transition: all var(--mdui-duration-short) var(--mdui-easing-standard);
}

.entry-content ol li:hover,
.entry-content ul li:hover {
  color: var(--mdui-primary);
  transform: translateX(2px);
}

.entry-content ul {
  list-style-type: disc;
}

.entry-content ol {
  list-style-type: decimal;
}

.entry-content ul ul,
.entry-content ol ol,
.entry-content ul ol,
.entry-content ol ul {
  padding-left: 1.5em;
  margin-top: 0.5em;
  margin-bottom: 0.5em;
}

/* 修复暗色模式下列表颜色 */
[data-theme="dark"] .entry-content ul,
[data-theme="dark"] .entry-content ol {
  color: var(--mdui-on-surface-variant);
}

[data-theme="dark"] .entry-content ul li,
[data-theme="dark"] .entry-content ol li {
  color: var(--mdui-on-surface-variant);
}

[data-theme="dark"] .entry-content ul {
  list-style-type: circle;
}

[data-theme="dark"] .entry-content ol {
  list-style-type: decimal;
}

/* 状态标签 */
.status-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.status-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--mdui-corner-full);
  font-size: 0.875rem;
  font-weight: 600;
  transition: all var(--mdui-duration-short) var(--mdui-easing-standard);
}

.status-tag .material-icons-round {
  font-size: 0.875rem;
}

.status-open {
  background: var(--mdui-success);
  color: white;
}

.status-test {
  background: var(--mdui-warning);
  color: white;
}

.status-close {
  background: var(--mdui-error);
  color: white;
}

.date-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--mdui-surface-variant);
  color: var(--mdui-on-surface-variant);
  border-radius: var(--mdui-corner-full);
  font-size: 0.875rem;
  font-weight: 500;
}

.date-tag .material-icons-round {
  font-size: 0.875rem;
  opacity: 0.7;
}

/* 下载区域 */
.download-section {
  margin: 20px 0;
  padding: 20px;
  background: var(--mdui-surface-variant);
  border-radius: var(--mdui-corner-medium);
  border-left: 3px solid var(--mdui-primary);
  transition: all var(--mdui-duration-medium) var(--mdui-easing-standard);
}

.download-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--mdui-on-surface);
  font-size: 1.125rem;
}

.download-label .material-icons-round {
  color: var(--mdui-primary);
}

.download-form {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.download-password {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--mdui-surface-variant);
  border-radius: var(--mdui-corner-medium);
  background: var(--mdui-surface);
  color: var(--mdui-on-surface);
  font-size: 1rem;
  outline: none;
  transition: all var(--mdui-duration-short) var(--mdui-easing-standard);
}

.download-password:focus {
  border-color: var(--mdui-primary);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.download-submit {
  padding: 12px 20px;
  background: var(--mdui-primary-gradient);
  color: white;
  border: none;
  border-radius: var(--mdui-corner-medium);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--mdui-duration-short) var(--mdui-easing-standard);
  display: flex;
  align-items: center;
  gap: 6px;
}

.download-submit:hover {
  transform: translateY(-1px);
  box-shadow: var(--mdui-elevation-2);
}

.download-disabled {
  padding: 16px;
  text-align: center;
  color: var(--mdui-on-surface-variant);
  background: var(--mdui-surface-variant);
  border-radius: var(--mdui-corner-medium);
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.download-result {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--mdui-corner-medium);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.download-result.success {
  background: #D1FAE5;
  color: #065F46;
  border-left: 3px solid #059669;
}

.download-result.error {
  background: #FEE2E2;
  color: #991B1B;
  border-left: 3px solid #DC2626;
}

.download-result a {
  color: inherit;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.download-result a:hover {
  border-bottom-color: transparent;
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 32px;
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: var(--mdui-corner-medium);
  background: var(--mdui-surface);
  color: var(--mdui-on-surface);
  text-decoration: none;
  font-weight: 500;
  transition: all var(--mdui-duration-short) var(--mdui-easing-standard);
  border: 1px solid var(--mdui-surface-variant);
}

.pagination a:hover {
  background: var(--mdui-primary-gradient);
  color: white;
  border-color: var(--mdui-primary);
}

.pagination .current {
  background: var(--mdui-primary-gradient);
  color: white;
  border-color: var(--mdui-primary);
}

/* 底部区域 - 简洁设计，高度与导航一致 */
.site-footer {
  background: var(--mdui-surface);
  padding: 20px 0;
  margin-top: 40px;
  border-top: 1px solid var(--mdui-surface-variant);
  position: relative;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links a {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--mdui-on-surface-variant);
  text-decoration: none;
  font-size: 0.875rem;
  transition: all var(--mdui-duration-short) var(--mdui-easing-standard);
  padding: 6px 12px;
  border-radius: var(--mdui-corner-small);
}

.footer-links a:hover {
  color: var(--mdui-primary);
  background: rgba(59, 130, 246, 0.1);
}

.footer-links .material-icons-round {
  font-size: 1rem;
}

.footer-info {
  text-align: center;
  margin-bottom: 12px;
}

.footer-text {
  color: var(--mdui-on-surface-variant);
  font-size: 0.875rem;
  margin: 0;
  line-height: 1.5;
}

.footer-text a {
  color: var(--mdui-primary);
  text-decoration: none;
  transition: all var(--mdui-duration-short) var(--mdui-easing-standard);
}

.footer-text a:hover {
  text-decoration: underline;
}

.footer-slogan {
  text-align: center;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--mdui-surface-variant);
}

.slogan-text {
  color: var(--mdui-on-surface-variant);
  font-size: 0.75rem;
  line-height: 1.4;
  margin: 0;
}

/* 返回顶部按钮 - 矩形和三角组合设计 */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 70px;
  background: var(--mdui-primary-gradient);
  color: white;
  border: none;
  border-radius: var(--mdui-corner-medium);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: var(--mdui-elevation-2);
  opacity: 0;
  visibility: hidden;
  transition: all var(--mdui-duration-medium) var(--mdui-easing-standard);
  z-index: 999;
  cursor: pointer;
  overflow: hidden;
}

.back-to-top::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.1);
  opacity: 0;
  transition: opacity var(--mdui-duration-short) var(--mdui-easing-standard);
}

.back-to-top:hover::before {
  opacity: 1;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--mdui-elevation-3);
}

/* 三角形箭头 */
.back-to-top .arrow {
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-bottom: 12px solid white;
  margin-bottom: 8px;
}

/* 进度文本 */
.back-to-top .progress-text {
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
}

/* 错误页面 */
.error-404 {
  text-align: center;
  padding: 60px 40px;
}

.error-404 h1 {
  font-size: 6rem;
  font-weight: 800;
  background: var(--mdui-primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  line-height: 1;
}

.error-404 h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--mdui-on-surface);
}

.error-404 .entry-content {
  max-width: 500px;
  margin: 0 auto;
}

/* 加载动画 */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--mdui-background);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity var(--mdui-duration-medium) var(--mdui-easing-standard);
}

.loader {
  width: 48px;
  height: 48px;
  border: 3px solid var(--mdui-surface-variant);
  border-top: 3px solid var(--mdui-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 16px;
}

.loading-text {
  font-size: 1rem;
  color: var(--mdui-on-surface-variant);
  font-weight: 500;
}

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

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--mdui-surface);
    flex-direction: column;
    padding: 16px;
    box-shadow: var(--mdui-elevation-3);
    border-radius: 0 0 var(--mdui-corner-large) var(--mdui-corner-large);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--mdui-duration-medium) var(--mdui-easing-standard);
    z-index: 999;
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-menu a {
    justify-content: center;
    border-radius: var(--mdui-corner-medium);
  }
  
  .title-group {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }
  
  .site-description {
    margin-bottom: 0;
  }
  
  .download-form {
    flex-direction: column;
  }
  
  .download-password,
  .download-submit {
    width: 100%;
  }
  
  .site-content {
    margin-top: 72px;
    padding: 24px 0;
  }
  
  .card {
    padding: 20px;
    margin-bottom: 16px;
  }
  
  .entry-title {
    font-size: 1.375rem;
  }
  
  /* 移动端列表间距调整 */
  .entry-content ol,
  .entry-content ul {
    padding-left: 1.8em;
  }
  
  /* 移动端页脚调整 */
  .footer-links {
    gap: 16px;
  }
  
  .footer-links a {
    padding: 4px 8px;
  }
  
  .back-to-top {
    width: 50px;
    height: 60px;
    bottom: 16px;
    right: 16px;
  }
  
  .back-to-top .arrow {
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 10px solid white;
    margin-bottom: 6px;
  }
  
  .back-to-top .progress-text {
    font-size: 0.7rem;
  }
  
  .error-404 h1 {
    font-size: 4rem;
  }
  
  .error-404 h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .site-title {
    font-size: 1.375rem;
  }
  
  .site-description {
    font-size: 0.8125rem;
  }
  
  .card {
    padding: 16px;
    border-radius: var(--mdui-corner-medium);
  }
  
  .entry-title {
    font-size: 1.25rem;
  }
  
  .status-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  
  .download-section {
    padding: 16px;
  }
  
  /* 小屏幕列表间距调整 */
  .entry-content ol,
  .entry-content ul {
    padding-left: 1.6em;
  }
  
  .footer-links {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }
  
  .error-404 {
    padding: 40px 20px;
  }
  
  .error-404 h1 {
    font-size: 3rem;
  }
  
  .error-404 h2 {
    font-size: 1.25rem;
  }
}