/* 基础样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 全局变量 */
:root {
  /* 主题颜色 */
  --primary-color: #1ABCBC;  /* 青色 */
  --secondary-color: #F44760;  /* 玫红色 */
  --accent-color: #FACC15;  /* 金黄色 */
  --background-light: #F8FDFE;
  --background-medium: #E6F7F7;
  --text-dark: #1A202C;
  --text-medium: #4A5568;
  --text-light: #718096;
  --white: #FFFFFF;
  --black: #000000;
  --shadow: rgba(0, 0, 0, 0.1);
  
  /* 间距 */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 5rem;
  
  /* 边框 */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 1rem;
  --border-radius-xl: 2rem;
  
  /* 过渡 */
  --transition-fast: 0.2s;
  --transition-medium: 0.3s;
  --transition-slow: 0.5s;
}

/* 基础样式 */
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'LXGW WenKai', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-dark);
  background-color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
}

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

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--secondary-color);
}

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

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
  border: none;
  outline: none;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: scale(0);
  opacity: 0;
  transition: transform 0.5s, opacity 0.5s;
}

.btn:active::after {
  transform: scale(2);
  opacity: 0;
  transition: 0s;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--white);
  box-shadow: 0 4px 10px rgba(26, 188, 188, 0.3);
}

.btn-primary:hover {
  background-color: #15a8a8;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(26, 188, 188, 0.4);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--white);
  box-shadow: 0 4px 10px rgba(244, 71, 96, 0.3);
}

.btn-secondary:hover {
  background-color: #e03b53;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(244, 71, 96, 0.4);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background-color: var(--primary-color);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-icon {
  padding: 0.5rem;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: 0.5rem;
}

.icon {
  margin-right: var(--spacing-sm);
}

/* 动画效果 */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes zoomIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(26, 188, 188, 0.6);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(26, 188, 188, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(26, 188, 188, 0);
  }
}

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

@keyframes float {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
  100% {
    transform: translateY(0px);
  }
}

@keyframes slideFromRight {
  0% {
    transform: translateX(100%);
    opacity: 0;
  }
  100% {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideFromLeft {
  0% {
    transform: translateX(-100%);
    opacity: 0;
  }
  100% {
    transform: translateX(0);
    opacity: 1;
  }
}

.animated {
  animation-duration: 1s;
  animation-fill-mode: both;
}

.fadeIn { animation-name: fadeIn; }
.fadeInUp { animation-name: fadeInUp; }
.fadeInLeft { animation-name: fadeInLeft; }
.fadeInRight { animation-name: fadeInRight; }
.zoomIn { animation-name: zoomIn; }
.pulse { animation: pulse 2s infinite; }
.float { animation: float 4s ease-in-out infinite; }

/* 页头样式 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: var(--spacing-md) 0;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: all var(--transition-medium);
}

.header.scrolled {
  padding: var(--spacing-xs) 0;
  background-color: rgba(255, 255, 255, 0.95);
}

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

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

.logo-img {
  width: 40px;
  height: 40px;
  margin-right: 10px;
  background-color: var(--primary-color);
  border-radius: 50%;
}

.logo h1 {
  font-size: 1.5rem;
  margin: 0;
  color: var(--primary-color);
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list li {
  margin-left: var(--spacing-xl);
}

.nav-list a {
  color: var(--text-dark);
  font-weight: 500;
  position: relative;
}

.nav-list a:after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width var(--transition-fast);
}

.nav-list a:hover:after,
.nav-list a.active:after {
  width: 100%;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--text-dark);
  margin: 2px 0;
  transition: all var(--transition-fast);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(-45deg) translate(-5px, 6px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(45deg) translate(-5px, -6px);
}

/* 英雄区域 */
.hero {
  height: 100vh;
  min-height: 600px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
}

/* 英雄区轮播图 */
.hero-slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.5s ease;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.3) 50%, rgba(0,0,0,0.5) 100%);
}

.hero-indicators {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}

.hero-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.3s ease;
}

.hero-indicator.active {
  width: 30px;
  border-radius: 10px;
  background-color: var(--primary-color);
}

.hero .container {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr;
  text-align: center;
}

.hero-content {
  color: var(--white);
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--white);
  line-height: 1.2;
  text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--white);
  text-shadow: 1px 1px 5px rgba(0, 0, 0, 0.3);
}

.hero-desc {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-xl);
  color: var(--white);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
}

/* 通用部分标题 */
.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: var(--spacing-sm);
  color: var(--primary-color);
  position: relative;
  padding-bottom: var(--spacing-md);
}

.section-title:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background-color: var(--accent-color);
  border-radius: var(--border-radius-lg);
}

.section-subtitle {
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-medium);
  margin-bottom: var(--spacing-2xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* 特色功能 */
.feature {
  padding: var(--spacing-3xl) 0;
  background-color: var(--white);
  position: relative;
  overflow: hidden;
}

.feature::after {
  content: '';
  position: absolute;
  bottom: -150px;
  right: -150px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background-color: rgba(26, 188, 188, 0.05);
  z-index: 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  position: relative;
  z-index: 1;
}

.feature-card {
  background-color: var(--background-light);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  text-align: center;
  transition: all var(--transition-medium);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  position: relative;
  z-index: 1;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-color) 0%, transparent 100%);
  opacity: 0;
  border-radius: var(--border-radius-lg);
  z-index: -1;
  transition: opacity var(--transition-medium);
}

.feature-card:hover {
  transform: translateY(-15px) scale(1.02);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-card:hover::before {
  opacity: 0.1;
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  transition: transform var(--transition-medium);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1);
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-dark);
  transition: color var(--transition-medium);
}

.feature-card:hover h3 {
  color: var(--primary-color);
}

.feature-card p {
  color: var(--text-medium);
  margin: 0;
}

/* 方言词汇 */
.dialect {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(to bottom, var(--white), var(--background-medium));
}

.search-filter {
  display: flex;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.search-box {
  flex: 1;
  display: flex;
  min-width: 200px;
}

.search-box input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid #ddd;
  border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
  outline: none;
  font-family: inherit;
  transition: border-color var(--transition-fast);
}

.search-box input:focus {
  border-color: var(--primary-color);
}

.search-box button {
  padding: 0.75rem 1.5rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.search-box button:hover {
  background-color: #15a8a8;
}

.filter-box {
  width: 200px;
}

.filter-box select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #ddd;
  border-radius: var(--border-radius-md);
  outline: none;
  font-family: inherit;
  background-color: white;
  cursor: pointer;
  transition: border-color var(--transition-fast);
  appearance: none;
  background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23999' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.filter-box select:focus {
  border-color: var(--primary-color);
}

.dialect-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.dialect-card {
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  overflow: hidden;
  transition: all var(--transition-medium);
  opacity: 0;
  animation: fadeInUp 0.6s forwards;
}

.dialect-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.dialect-card-header {
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--primary-color);
  color: var(--white);
  position: relative;
}

.dialect-card-header h3 {
  margin: 0;
  font-size: 1.5rem;
}

.dialect-card-header .pinyin {
  margin-top: var(--spacing-xs);
  font-size: 0.9rem;
  opacity: 0.9;
}

.sound-btn {
  position: absolute;
  right: var(--spacing-lg);
  top: 50%;
  transform: translateY(-50%);
  background-color: var(--white);
  color: var(--primary-color);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: all var(--transition-fast);
}

.sound-btn:hover {
  background-color: var(--accent-color);
  color: var(--text-dark);
  transform: translateY(-50%) scale(1.1);
}

.dialect-card-body {
  padding: var(--spacing-lg);
}

.meaning {
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.example {
  color: var(--text-medium);
  font-style: italic;
}

.category-tag {
  display: inline-block;
  background-color: var(--background-medium);
  color: var(--primary-color);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: 0.8rem;
  margin-top: var(--spacing-md);
  transition: all var(--transition-fast);
}

.dialect-card:hover .category-tag {
  background-color: var(--primary-color);
  color: var(--white);
}

.load-more {
  text-align: center;
  margin-top: var(--spacing-xl);
}

.no-result {
  grid-column: 1 / -1;
  padding: var(--spacing-xl);
  text-align: center;
  background-color: var(--background-light);
  border-radius: var(--border-radius-lg);
  color: var(--text-medium);
  font-style: italic;
}

/* 语音转译 */
.voice-translate {
  padding: var(--spacing-3xl) 0;
  background-color: var(--background-light);
  position: relative;
  overflow: hidden;
}

.voice-translate::before {
  content: '';
  position: absolute;
  top: -100px;
  left: -100px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background-color: rgba(244, 71, 96, 0.05);
  z-index: 0;
}

.translate-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  position: relative;
  z-index: 1;
}

.translate-input, .translate-output {
  background-color: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: all var(--transition-medium);
}

.translate-input:hover, .translate-output:hover {
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  transform: translateY(-5px);
}

.translate-input h3, .translate-output h3 {
  margin-bottom: var(--spacing-lg);
  font-size: 1.2rem;
  color: var(--primary-color);
}

.translate-options {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.option {
  display: flex;
  align-items: center;
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.option:hover {
  transform: translateX(5px);
}

.option input {
  margin-right: var(--spacing-xs);
  accent-color: var(--primary-color);
}

textarea {
  width: 100%;
  height: 150px;
  padding: var(--spacing-md);
  border: 1px solid #ddd;
  border-radius: var(--border-radius-md);
  resize: none;
  font-family: inherit;
  margin-bottom: var(--spacing-lg);
  transition: border-color var(--transition-fast);
}

textarea:focus {
  border-color: var(--primary-color);
  outline: none;
}

.translate-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.output-box {
  min-height: 150px;
  padding: var(--spacing-md);
  border: 1px solid #ddd;
  border-radius: var(--border-radius-md);
  background-color: #f9f9f9;
  margin-bottom: var(--spacing-lg);
  transition: all var(--transition-fast);
}

.output-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
  flex-wrap: wrap;
}

.demo-note {
  text-align: center;
  color: var(--text-light);
  font-style: italic;
  margin-top: var(--spacing-lg);
}

#voice-input-btn.recording {
  background-color: var(--accent-color);
  animation: pulse 1.5s infinite;
}

/* 结果高亮 */
.result-show {
  animation: zoomIn 0.5s;
}

.highlight {
  animation: pulse 1s;
}

/* 加载效果 */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-medium);
}

.loading::after {
  content: '...';
  animation: loading 1.5s infinite;
  width: 24px;
  display: inline-block;
}

@keyframes loading {
  0% { content: '.'; }
  33% { content: '..'; }
  66% { content: '...'; }
}

/* 故事 */
.story {
  padding: var(--spacing-3xl) 0;
  background-color: var(--white);
  position: relative;
}

.story::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -150px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background-color: rgba(250, 204, 21, 0.1);
  z-index: 0;
}

.story-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  position: relative;
  z-index: 1;
}

.story-card {
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: all var(--transition-medium);
  opacity: 0;
  animation: fadeInUp 0.6s forwards;
}

.story-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.story-image {
  height: 200px;
  overflow: hidden;
  position: relative;
}

.story-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(0, 0, 0, 0.7) 100%);
  z-index: 1;
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.story-card:hover .story-image::after {
  opacity: 1;
}

.story-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-medium);
}

.story-card:hover .story-image img {
  transform: scale(1.1);
}

.story-content {
  padding: var(--spacing-lg);
  position: relative;
  z-index: 2;
}

.story-content h3 {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-sm);
  transition: color var(--transition-medium);
}

.story-card:hover h3 {
  color: var(--primary-color);
}

.story-meta {
  display: flex;
  justify-content: space-between;
  color: var(--text-light);
  font-size: 0.9rem;
  margin-top: var(--spacing-md);
}

.story-button {
  margin-top: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.like-story-btn {
  background-color: var(--background-light);
  color: var(--text-medium);
}

.like-story-btn:hover {
  background-color: var(--background-medium);
  color: var(--primary-color);
}

.like-story-btn.liked {
  background-color: var(--secondary-color);
  color: var(--white);
}

.like-popup {
  position: absolute;
  top: -20px;
  right: -5px;
  background-color: var(--accent-color);
  color: var(--text-dark);
  border-radius: 50%;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: bold;
  animation: fadeOutUp 1s forwards;
}

/* 模态框 */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.modal.fade-out {
  animation: fadeOut 0.3s forwards;
}

@keyframes fadeOut {
  0% { opacity: 1; }
  100% { opacity: 0; }
}

.modal-content {
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  animation: zoomIn 0.3s;
}

.modal-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-medium);
  transition: all var(--transition-fast);
  z-index: 10;
}

.modal-close:hover {
  color: var(--primary-color);
  transform: scale(1.2);
}

.modal-body {
  padding: var(--spacing-xl);
}

.modal-body h2 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
}

.modal-header-img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.story-full-content {
  margin-top: var(--spacing-lg);
}

.story-full-meta {
  display: flex;
  justify-content: space-between;
  color: var(--text-light);
  margin: var(--spacing-lg) 0;
  font-size: 0.9rem;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.story-actions {
  margin-top: var(--spacing-2xl);
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
}

/* 页脚 */
.footer {
  background-color: #1A202C;
  color: var(--white);
  padding-top: var(--spacing-2xl);
  position: relative;
  z-index: 1;
}

.footer::before {
  content: '';
  position: absolute;
  top: -50px;
  right: 0;
  left: 0;
  height: 50px;
  background-color: #1A202C;
  clip-path: polygon(0 100%, 100% 100%, 50% 0);
  z-index: 0;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-xl);
  padding-bottom: var(--spacing-2xl);
}

.footer-logo h2 {
  color: var(--white);
  margin-bottom: var(--spacing-sm);
}

.footer-logo p {
  color: rgba(255, 255, 255, 0.7);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.footer-links-group h3 {
  color: var(--white);
  font-size: 1.2rem;
  margin-bottom: var(--spacing-md);
  position: relative;
  padding-bottom: var(--spacing-sm);
}

.footer-links-group h3:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background-color: var(--primary-color);
}

.footer-links-group ul {
  list-style: none;
}

.footer-links-group ul li {
  margin-bottom: var(--spacing-sm);
  transition: transform var(--transition-fast);
}

.footer-links-group ul li:hover {
  transform: translateX(5px);
}

.footer-links-group a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding: var(--spacing-lg) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.5);
}

/* 上传模拟器 */
.upload-simulator {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
}

.upload-simulator-content {
  background-color: #fff;
  padding: 20px;
  border-radius: 8px;
  width: 90%;
  max-width: 500px;
}

.file-selection {
  margin: 20px 0;
}

.file-selection select {
  width: 100%;
  padding: 10px;
  border-radius: 4px;
  border: 1px solid #ddd;
}

.file-upload-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* 加载状态 */
body.loading::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.7);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
}

body.loading::before {
  content: "处理中...";
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 20px;
  background-color: #333;
  color: #fff;
  border-radius: 8px;
  z-index: 2001;
}

/* 响应式布局 */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 3rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  /* 导航菜单 */
  .nav {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    padding: var(--spacing-md) 0;
    z-index: 999;
  }
  
  .nav.active {
    display: block;
  }
  
  .nav-list {
    flex-direction: column;
    align-items: center;
  }
  
  .nav-list li {
    margin: var(--spacing-md) 0;
    margin-left: 0;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  /* 布局调整 */
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.3rem;
  }
  
  .translate-container,
  .about-content {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .footer-links {
    grid-template-columns: 1fr 1fr;
  }
  
  .search-filter {
    flex-direction: column;
  }
  
  .filter-box {
    width: 100%;
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-links-group h3:after {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .translate-actions,
  .output-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .translate-actions button,
  .output-actions button {
    width: 100%;
    margin-bottom: var(--spacing-sm);
  }
  
  .hero-buttons {
    flex-direction: column;
  }
  
  .hero-buttons a {
    width: 100%;
  }
  
  .story-button {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .story-button .btn {
    width: 100%;
  }
  
  .modal-content {
    max-height: 85vh;
  }
}