/* ========================================
   嘟嘟巴士企业端用户手册 - 现代科技风格样式
   ======================================== */

/* CSS变量定义 */
:root {
  /* 主色调 - 深蓝紫渐变 */
  --color-primary-dark: #1a1a2e;
  --color-primary-mid: #16213e;
  --color-primary-light: #0f3460;

  /* 强调色 - 青蓝渐变 */
  --color-accent-cyan: #00d4ff;
  --color-accent-blue: #0099ff;

  /* 辅助色 - 紫粉渐变 */
  --color-secondary-purple: #a855f7;
  --color-secondary-pink: #ec4899;

  /* 文字颜色 */
  --color-text-primary: #ffffff;
  --color-text-secondary: #e5e7eb;
  --color-text-muted: #9ca3af;

  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* 字体 */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;

  /* 圆角 */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* 阴影 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

  /* 发光效果 */
  --glow-cyan: 0 0 20px rgba(0, 212, 255, 0.5);
  --glow-blue: 0 0 20px rgba(0, 153, 255, 0.5);
  --glow-purple: 0 0 20px rgba(168, 85, 247, 0.5);

  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ========================================
   基础样式重置
   ======================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-mid) 50%, var(--color-primary-light) 100%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

/* 网格纹理背景 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: 0;
}

a {
  color: var(--color-accent-cyan);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-accent-blue);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ========================================
   布局系统
   ======================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  position: relative;
  z-index: 1;
}

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-md);
  position: relative;
  z-index: 1;
}

/* Grid系统 */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Flexbox工具类 */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

/* ========================================
   顶部导航栏
   ======================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(26, 26, 46, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-sm) 0;
  z-index: 1000;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(26, 26, 46, 0.95);
  box-shadow: var(--shadow-lg);
}

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

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
}

.navbar-brand:hover {
  color: var(--color-accent-cyan);
}

.navbar-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.navbar-menu a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.navbar-menu a:hover,
.navbar-menu a.active {
  color: var(--color-accent-cyan);
  background: rgba(0, 212, 255, 0.1);
}

/* ========================================
   Hero区域
   ======================================== */

.hero {
  padding: calc(80px + var(--spacing-2xl)) 0 var(--spacing-2xl);
  text-align: center;
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-blue), var(--color-secondary-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 3s ease infinite;
}

@keyframes gradient-shift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.hero-version {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ========================================
   卡片组件
   ======================================== */

.card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(168, 85, 247, 0.1));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl), var(--glow-cyan);
  border-color: rgba(0, 212, 255, 0.3);
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-blue));
  border-radius: var(--radius-lg);
  font-size: var(--font-size-3xl);
  position: relative;
  z-index: 1;
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
  position: relative;
  z-index: 1;
}

.card-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
  position: relative;
  z-index: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-accent-cyan);
  font-weight: 600;
  font-size: var(--font-size-sm);
  position: relative;
  z-index: 1;
}

.card-link:hover {
  gap: var(--spacing-sm);
}

/* ========================================
   按钮组件
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-blue));
  color: var(--color-text-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--glow-cyan);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--color-accent-cyan);
}

/* 涟漪效果 */
.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:active::after {
  width: 300px;
  height: 300px;
}

/* ========================================
   内容区域
   ======================================== */

.content-wrapper {
  display: flex;
  gap: var(--spacing-lg);
  padding: calc(80px + var(--spacing-lg)) 0 var(--spacing-2xl);
  align-items: flex-start;
}

.sidebar {
  width: 250px;
  flex-shrink: 0;
  position: sticky;
  top: calc(80px + var(--spacing-lg));
  height: fit-content;
  max-height: calc(100vh - 80px - var(--spacing-lg) - var(--spacing-lg));
}

.sidebar-nav {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--spacing-md);
  max-height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
}

/* 自定义滚动条样式 */
.sidebar-nav::-webkit-scrollbar {
  width: 6px;
}

.sidebar-nav::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: rgba(0, 212, 255, 0.3);
  border-radius: 3px;
  transition: background var(--transition-base);
}

.sidebar-nav::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 212, 255, 0.5);
}

.sidebar-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.sidebar-menu {
  list-style: none;
}

.sidebar-menu li {
  margin-bottom: var(--spacing-xs);
}

.sidebar-menu a {
  display: block;
  padding: var(--spacing-xs) var(--spacing-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
  color: var(--color-accent-cyan);
  background: rgba(0, 212, 255, 0.1);
  padding-left: var(--spacing-md);
}

/* 3级菜单样式 */
.sidebar-menu .submenu {
  list-style: none;
  padding-left: var(--spacing-sm);
  margin-top: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base), opacity var(--transition-base);
  opacity: 0;
}

.sidebar-menu .has-submenu.active > .submenu {
  max-height: 1000px;
  opacity: 1;
}

.sidebar-menu .submenu .submenu {
  padding-left: var(--spacing-md);
}

/* 折叠图标 */
.sidebar-menu .has-submenu > a {
  position: relative;
  padding-right: calc(var(--spacing-lg) + var(--spacing-xs));
}

.sidebar-menu .has-submenu > a::after {
  content: '▼';
  position: absolute;
  right: var(--spacing-sm);
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--font-size-xs);
  transition: transform var(--transition-base);
  color: var(--color-text-muted);
}

.sidebar-menu .has-submenu.active > a::after {
  transform: translateY(-50%) rotate(180deg);
  color: var(--color-accent-cyan);
}

/* 子菜单项样式 */
.sidebar-menu .submenu a {
  font-size: var(--font-size-xs);
  padding: calc(var(--spacing-xs) / 2) var(--spacing-sm);
}

.sidebar-menu .submenu .submenu a {
  font-size: var(--font-size-xs);
  padding-left: var(--spacing-md);
  opacity: 0.9;
}

.main-content {
  flex: 1;
  min-width: 0;
  overflow-x: hidden;
}

.content-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
}

/* ========================================
   面包屑导航
   ======================================== */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-secondary);
}

.breadcrumb a:hover {
  color: var(--color-accent-cyan);
}

.breadcrumb-separator {
  color: var(--color-text-muted);
}

/* ========================================
   页面标题
   ======================================== */

.page-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.page-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
}

/* ========================================
   内容区块
   ======================================== */

.section {
  margin-bottom: var(--spacing-xl);
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.section-title::before {
  content: '';
  width: 4px;
  height: 1.5em;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-blue));
  border-radius: var(--radius-sm);
}

.section-content {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.section-content p {
  margin-bottom: var(--spacing-md);
}

/* ========================================
   操作步骤
   ======================================== */

.steps {
  list-style: none;
  counter-reset: step-counter;
  padding-left: 0;
}

.step-item {
  counter-increment: step-counter;
  margin-bottom: var(--spacing-lg);
  padding-left: calc(var(--spacing-xl) + var(--spacing-md));
  position: relative;
  list-style: none;
}

.step-item::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0;
  width: var(--spacing-xl);
  height: var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-blue));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-lg);
}

.step-item::after {
  content: '';
  position: absolute;
  left: calc(var(--spacing-xl) / 2 - 1px);
  top: var(--spacing-xl);
  width: 2px;
  height: calc(100% - var(--spacing-xl));
  background: linear-gradient(180deg, var(--color-accent-cyan), transparent);
}

.step-item:last-child::after {
  display: none;
}

.step-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

.step-description {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ========================================
   注意事项框
   ======================================== */

.notice {
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  border-left: 4px solid;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
}

.notice-info {
  border-left-color: var(--color-accent-cyan);
}

.notice-warning {
  border-left-color: #fbbf24;
}

.notice-success {
  border-left-color: #10b981;
}

.notice-error {
  border-left-color: #ef4444;
}

.notice-title {
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.notice-content {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ========================================
   常见问题（折叠面板）
   ======================================== */

.faq {
  margin-bottom: var(--spacing-md);
}

.faq-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
}

.faq-question {
  padding: var(--spacing-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  color: var(--color-text-primary);
  transition: all var(--transition-base);
}

.faq-question:hover {
  background: rgba(255, 255, 255, 0.08);
}

.faq-icon {
  transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-content {
  padding: 0 var(--spacing-md) var(--spacing-md);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ========================================
   底部导航
   ======================================== */

.page-nav {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.page-nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.page-nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-accent-cyan);
  transform: translateX(-5px);
}

.page-nav-link.next:hover {
  transform: translateX(5px);
}

/* ========================================
   返回顶部按钮
   ======================================== */

.back-to-top {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-blue));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 999;
  box-shadow: var(--shadow-lg);
}

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

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl), var(--glow-cyan);
}

/* ========================================
   底部版权
   ======================================== */

.footer {
  padding: var(--spacing-xl) 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

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

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

/* ========================================
   动画效果
   ======================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.fade-in-up-delay-1 {
  animation: fadeInUp 0.6s ease 0.1s forwards;
  opacity: 0;
}

.fade-in-up-delay-2 {
  animation: fadeInUp 0.6s ease 0.2s forwards;
  opacity: 0;
}

.fade-in-up-delay-3 {
  animation: fadeInUp 0.6s ease 0.3s forwards;
  opacity: 0;
}

/* ========================================
   响应式设计
   ======================================== */

@media (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .content-wrapper {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    position: static;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .navbar-menu {
    display: none;
  }

  .hero {
    padding: calc(60px + var(--spacing-xl)) 0 var(--spacing-xl);
  }

  .content-card {
    padding: var(--spacing-md);
  }

  .page-nav {
    flex-direction: column;
    gap: var(--spacing-md);
  }
}

/* ========================================
   占位图样式
   ======================================== */

.placeholder-img {
  width: 100%;
  height: 300px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(168, 85, 247, 0.1));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: var(--spacing-md) 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.placeholder-icon {
  font-size: 4rem;
  color: var(--color-accent-cyan);
  opacity: 0.5;
}

/* ========================================
   工具类
   ======================================== */

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }
.pt-xl { padding-top: var(--spacing-xl); }

.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }
.pb-xl { padding-bottom: var(--spacing-xl); }

/* ========================================
   Additional styles for content pages
   ======================================== */

/* Hero small variant */
.hero-small {
  padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl);
}

/* Content sections */
.content-section {
  margin-bottom: var(--spacing-2xl);
}

/* Section title with icon */
.section-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
}

.title-icon {
  font-size: var(--font-size-3xl);
}

/* Subsection title */
.subsection-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

/* Text content */
.text-content {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

/* Info boxes */
.info-box {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  border-left: 4px solid;
  background: rgba(255, 255, 255, 0.05);
}

.info-box-icon {
  font-size: var(--font-size-2xl);
  flex-shrink: 0;
}

.info-box-content {
  flex: 1;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.info-box-content strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.info-box-primary {
  border-left-color: var(--color-accent-cyan);
  background: rgba(0, 212, 255, 0.05);
}

.info-box-warning {
  border-left-color: #fbbf24;
  background: rgba(251, 191, 36, 0.05);
}

.info-box-success {
  border-left-color: #10b981;
  background: rgba(16, 185, 129, 0.05);
}

.info-box-error {
  border-left-color: #ef4444;
  background: rgba(239, 68, 68, 0.05);
}

/* FAQ items */
.faq-item {
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.faq-question {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.faq-answer {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* Footer sections */
.footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  padding: var(--spacing-xl) 0;
}

.footer-section h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.footer-section p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-xs);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.footer-section ul li a:hover {
  color: var(--color-accent-cyan);
}

.footer-bottom {
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer-bottom p {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/* Responsive adjustments for footer */
@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

/* ========================================
   List styling improvements
   ======================================== */

.section-content ul,
.section-content ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.section-content ul li,
.section-content ol li {
  margin-bottom: var(--spacing-xs);
}

.section-content ul li strong,
.section-content ol li strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

/* Notice content lists */
.notice-content ul,
.notice-content ol {
  margin-left: var(--spacing-md);
  margin-top: var(--spacing-xs);
  margin-bottom: 0;
}

.notice-content ul li,
.notice-content ol li {
  margin-bottom: var(--spacing-xs);
}

.notice-content ul li:last-child,
.notice-content ol li:last-child {
  margin-bottom: 0;
}

/* ========================================
   流程图样式
   ======================================== */

.flow-chart {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  margin: var(--spacing-xl) 0;
  flex-wrap: wrap;
}

.flow-step {
  flex: 1;
  min-width: 120px;
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--radius-lg);
  text-align: center;
  position: relative;
  transition: all var(--transition-base);
}

.flow-step:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--color-accent-cyan);
  transform: translateY(-3px);
  box-shadow: var(--glow-cyan);
}

.flow-step-number {
  display: inline-block;
  width: 30px;
  height: 30px;
  line-height: 30px;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-blue));
  border-radius: 50%;
  font-weight: 700;
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-xs);
}

.flow-step-title {
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-sm);
}

.flow-step-desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.flow-arrow {
  font-size: var(--font-size-2xl);
  color: var(--color-accent-cyan);
  flex-shrink: 0;
}

/* 垂直流程图 */
.flow-chart-vertical {
  flex-direction: column;
  align-items: stretch;
}

.flow-chart-vertical .flow-arrow {
  transform: rotate(90deg);
  align-self: center;
}

/* ========================================
   数据表格样式
   ======================================== */

.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.data-table thead {
  background: rgba(0, 212, 255, 0.1);
}

.data-table th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 600;
  color: var(--color-text-primary);
  border-bottom: 2px solid rgba(0, 212, 255, 0.3);
  font-size: var(--font-size-sm);
}

.data-table td {
  padding: var(--spacing-md);
  color: var(--color-text-secondary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-size: var(--font-size-sm);
}

.data-table tbody tr {
  transition: background var(--transition-fast);
}

.data-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.05);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

/* 表格状态标签 */
.table-badge {
  display: inline-block;
  padding: calc(var(--spacing-xs) / 2) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.table-badge-success {
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
}

.table-badge-warning {
  background: rgba(251, 191, 36, 0.2);
  color: #fbbf24;
}

.table-badge-error {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

.table-badge-info {
  background: rgba(0, 212, 255, 0.2);
  color: var(--color-accent-cyan);
}

/* 响应式表格 */
@media (max-width: 768px) {
  .data-table {
    display: block;
    overflow-x: auto;
  }
}

/* ========================================
   状态图样式
   ======================================== */

.status-diagram {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.status-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.status-box {
  flex: 1;
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid;
  border-radius: var(--radius-md);
  text-align: center;
  font-weight: 600;
  font-size: var(--font-size-sm);
  transition: all var(--transition-base);
}

.status-box:hover {
  transform: scale(1.05);
  box-shadow: 0 0 15px currentColor;
}

.status-box-pending {
  border-color: #fbbf24;
  color: #fbbf24;
}

.status-box-processing {
  border-color: var(--color-accent-cyan);
  color: var(--color-accent-cyan);
}

.status-box-completed {
  border-color: #10b981;
  color: #10b981;
}

.status-box-failed {
  border-color: #ef4444;
  color: #ef4444;
}

.status-connector {
  font-size: var(--font-size-xl);
  color: var(--color-text-muted);
}

/* ========================================
   图片查看器样式
   ======================================== */
.image-viewer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
}

.image-viewer.active {
  display: flex;
}

.image-viewer-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(10px);
  animation: fadeIn 0.3s ease;
}

.image-viewer-content {
  position: relative;
  max-width: 90%;
  max-height: 90%;
  z-index: 1;
  animation: zoomIn 0.3s ease;
}

.image-viewer-img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.image-viewer-close {
  position: absolute;
  top: -50px;
  right: 0;
  width: 40px;
  height: 40px;

  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  color: white;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.image-viewer-close:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
  transform: rotate(90deg);
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes zoomIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 移动端适配 */
@media (max-width: 768px) {
  .image-viewer-content {
    max-width: 95%;
    max-height: 95%;
  }

  .image-viewer-close {
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    font-size: 24px;
  }
}