/* 共用样式 */
:root {
  --primary-color: #0f52ba;
  --primary-light: #3b82f6;
  --primary-dark: #0c4a9a;
  --secondary-color: #f472b6;
  --secondary-light: #f9a8d4;
  --accent-color: #06b6d4;
  --accent-light: #22d3ee;
  --dark-blue: #1e3a8a;
  --mid-blue: #3b82f6;
  --light-blue: #dbeafe;
  --pale-blue: #eff6ff;
  --white: #ffffff;
  --gray-light: #f8fafc;
  --gray-medium: #94a3b8;
  --gray-dark: #334155;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  scroll-behavior: smooth;
  background-color: var(--pale-blue);
  color: var(--text-primary);
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(59, 131, 246, 0.318) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(6, 181, 212, 0.271) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(244, 114, 181, 0.192) 0%, transparent 50%);
  background-attachment: fixed;
  line-height: 1.6;
}

/* 渐变背景 */
.gradient-bg {
  background: linear-gradient(135deg, var(--pale-blue) 0%, var(--light-blue) 100%);
  position: relative;
  overflow: hidden;
}

.gradient-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 30% 70%, rgba(59, 130, 246, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 70% 30%, rgba(6, 182, 212, 0.1) 0%, transparent 40%);
  pointer-events: none;
}

.gradient-blue {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

.gradient-pink {
  background: linear-gradient(135deg, var(--secondary-light), var(--secondary-color));
}

.gradient-teal {
  background: linear-gradient(135deg, var(--accent-light), var(--accent-color));
}

.gradient-ocean {
  background: linear-gradient(135deg, #0f52ba 0%, #3b82f6 50%, #06b6d4 100%);
}

.gradient-sky {
  background: linear-gradient(180deg, #eff6ff 0%, #dbeafe 100%);
}

/* 卡片悬停效果 */
.card-hover {
  transition: all 0.3s ease;
  border: 1px solid rgba(59, 130, 246, 0.1);
}

.card-hover:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  border-color: rgba(59, 130, 246, 0.3);
}

/* 按钮样式 */
.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  z-index: 1;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
  z-index: -1;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
  background: linear-gradient(135deg, #f9a8d4, var(--secondary-color));
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  z-index: 1;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.btn-secondary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
  z-index: -1;
}

.btn-secondary:hover::before {
  left: 100%;
}

.btn-secondary:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 25px rgba(244, 114, 182, 0.4);
}

/* 标题样式 */
.section-title {
  position: relative;
  display: inline-block;
  margin-bottom: 2rem;
  font-size: clamp(1.875rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--primary-color);
  letter-spacing: -0.025em;
  line-height: 1.2;
  font-family: 'Inter', sans-serif;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-light), var(--secondary-color));
  border-radius: 2px;
}

/* 文字排版 */
.text-primary {
  color: var(--text-primary);
}

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

.text-accent {
  color: var(--accent-color);
}

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

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

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

/* 标题级别 */
h1, .h1 {
  font-size: clamp(2.25rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--primary-color);
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  font-family: 'Inter', sans-serif;
}

h2, .h2 {
  font-size: clamp(1.875rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--primary-dark);
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  font-family: 'Inter', sans-serif;
}

h3, .h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  color: var(--dark-blue);
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 1rem;
  font-family: 'Inter', sans-serif;
}

h4, .h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  line-height: 1.4;
  margin-bottom: 0.75rem;
  font-family: 'Inter', sans-serif;
}

h5, .h5 {
  font-size: clamp(1.125rem, 2vw, 1.25rem);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 0.5rem;
  font-family: 'Inter', sans-serif;
}

h6, .h6 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 0.5rem;
  font-family: 'Inter', sans-serif;
}

/* 段落样式 */
p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  letter-spacing: 0.005em;
  font-family: 'Inter', sans-serif;
}

p.lead {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  letter-spacing: 0.01em;
  font-family: 'Inter', sans-serif;
}

/* 文本间距 */
.text-sm {
  font-size: 0.875rem;
  line-height: 1.5;
}

.text-base {
  font-size: 1rem;
  line-height: 1.6;
}

.text-lg {
  font-size: 1.125rem;
  line-height: 1.7;
}

.text-xl {
  font-size: 1.25rem;
  line-height: 1.8;
}

/* 字间距 */
.letter-tight {
  letter-spacing: -0.025em;
}

.letter-normal {
  letter-spacing: 0.005em;
}

.letter-wide {
  letter-spacing: 0.025em;
}

/* 行高 */
.line-tight {
  line-height: 1.2;
}

.line-normal {
  line-height: 1.6;
}

.line-loose {
  line-height: 1.8;
}

/* 文本装饰 */
.text-gradient {
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  background-image: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.text-shadow {
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* 链接样式 */
a {
  color: var(--primary-color);
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  font-family: 'Inter', sans-serif;
}

a:hover {
  color: var(--primary-light);
}

a:focus {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
  border-radius: 0.25rem;
}

/* 浮动按钮 */
.floating-btn {
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  z-index: 1;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
}

.floating-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
  z-index: -1;
}

.floating-btn:hover::before {
  left: 100%;
}

.floating-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

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

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

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

.animate-fade-in {
  animation: fadeInUp 1s ease-out forwards;
  opacity: 0;
}

.animate-fade {
  animation: fadeIn 1s ease-out forwards;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-bounce-slow {
  animation: bounce-slow 3s ease-in-out infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

/* 背景装饰 */
.bg-decoration {
  background-image: 
    radial-gradient(circle at 25% 25%, rgba(59, 130, 246, 0.1) 0%, transparent 20%),
    radial-gradient(circle at 75% 75%, rgba(6, 182, 212, 0.1) 0%, transparent 20%),
    radial-gradient(circle at 50% 50%, rgba(244, 114, 182, 0.05) 0%, transparent 25%);
  background-size: 100% 100%;
  background-attachment: fixed;
}

/* 波浪背景 */
.wave-bg {
  position: relative;
  overflow: hidden;
}

.wave-bg::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 120px;
  background-image: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
  border-radius: 50% 50% 0 0 / 20px 20px 0 0;
  z-index: 0;
}

.wave-bg::after {
  content: '';
  position: absolute;
  bottom: 10px;
  left: 0;
  width: 100%;
  height: 80px;
  background-image: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(6, 182, 212, 0.15) 100%);
  border-radius: 50% 50% 0 0 / 15px 15px 0 0;
  z-index: 0;
}

/* 导航栏样式 */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 40;
    transition: all 0.3s ease;
}

nav.scrolled {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.nav-container {
    max-width: 7xl;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    transition: transform 0.3s ease;
}

.nav-logo:hover {
    transform: scale(1.05);
}

.nav-logo span {
    font-weight: bold;
    color: #1e40af;
    margin-left: 0.5rem;
    font-family: 'Inter', sans-serif;
    letter-spacing: 0.01em;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--primary-color);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
    font-size: 1rem;
    letter-spacing: 0.025em;
    text-transform: none;
    font-family: 'Inter', sans-serif;
}

.nav-links a:hover {
    color: var(--primary-light);
    letter-spacing: 0.05em;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-light), var(--secondary-color));
    transition: width 0.3s ease;
}

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

.nav-links a.active {
    color: var(--primary-light);
    font-weight: 600;
    letter-spacing: 0.05em;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.375rem;
    transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
    background: rgba(59, 130, 246, 0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 4rem;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        align-items: center;
        padding: 2rem 0;
        gap: 1.5rem;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 39;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-links a {
        font-size: 1.125rem;
        padding: 0.75rem 0;
        width: 100%;
        text-align: center;
        font-family: 'Inter', sans-serif;
    }

    .mobile-menu-btn {
        display: block;
    }
}

/* 页脚样式 */
footer {
    background: #1e3a8a;
    color: white;
    padding: 2rem 0;
}

.footer-container {
    max-width: 7xl;
    margin: 0 auto;
    padding: 0 1rem;
    text-align: center;
}

.footer-container p {
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer-container .text-blue-200 {
    color: #bfdbfe;
}

/* 浮动按钮 */
.floating-buttons {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 50;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* 表单样式 */
form input, form textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #dbeafe;
    border-radius: 9999px;
    outline: none;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
}

form input:focus, form textarea:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* 加载动画 */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}

.loading-spinner {
    width: 2rem;
    height: 2rem;
    border: 2px solid #e2e8f0;
    border-top: 2px solid #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* 数据可视化样式 */
.chart-container {
    width: 100%;
    height: 30rem;
    position: relative;
}

/* 游戏样式 */
.game-container {
    width: 100%;
    height: 30rem;
    background: #dbeafe;
    border-radius: 0.75rem;
    overflow: hidden;
}

/* 3D模型容器 */
.model-container {
    width: 100%;
    height: 30rem;
    background: #1e3a8a;
    border-radius: 0.75rem;
    overflow: hidden;
}

/* AR体验样式 */
.ar-marker {
    width: 12rem;
    height: 12rem;
    background: white;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

/* 艺术画廊样式 */
.art-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
}

.art-item {
    background: #f8fafc;
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

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

.art-image {
    width: 100%;
    height: 12rem;
    background: #dbeafe;
    border-radius: 0.5rem;
    overflow: hidden;
    margin-bottom: 1rem;
}

.art-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.art-image:hover img {
    transform: scale(1.05);
}

/* 社区样式 */
.story-item {
    background: #f8fafc;
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

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

/* 响应式工具类 */
@media (min-width: 640px) {
    .sm\\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 1024px) {
    .lg\\:grid-cols-4 {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

/* 通用容器样式 */
.container {
    max-width: 7xl;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 通用部分样式 */
.section {
    padding: 4rem 0;
}

.section-padding {
    padding: 4rem 1rem;
}

/* 通用卡片样式 */
.card {
    background: white;
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

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

/* 通用按钮样式 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    border: none;
    outline: none;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* 通用间距工具类 */
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }

.ml-1 { margin-left: 0.25rem; }
.ml-2 { margin-left: 0.5rem; }
.ml-4 { margin-left: 1rem; }
.ml-6 { margin-left: 1.5rem; }

.mr-1 { margin-right: 0.25rem; }
.mr-2 { margin-right: 0.5rem; }
.mr-4 { margin-right: 1rem; }
.mr-6 { margin-right: 1.5rem; }

/* 通用内边距工具类 */
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

/* 通用文本颜色工具类 */
.text-white { color: rgb(1, 0, 0); }
.text-blue-900 { color: #000000; }
.text-blue-700 { color: #000000; }
.text-blue-500 { color: #000000; }
.text-blue-200 { color: #000000; }
.text-light-blue { color: #004de6; }
.text-gray-dark { color: var(--gray-dark); }

/* 通用背景颜色工具类 */
.bg-white { background-color: rgb(200, 250, 200); }
.bg-blue-900 { background-color: var(--dark-blue); }
.bg-blue-500 { background-color: var(--primary-light); }
.bg-blue-100 { background-color: var(--light-blue); }
.bg-pale-blue { background-color: var(--pale-blue); }

/* 通用边框工具类 */
.border { border: 1px solid #e2e8f0; }
.border-blue-800 { border-color: rgba(30, 58, 138, 0.5); }
.border-t { border-top: 1px solid #e2e8f0; }

/* 通用圆角工具类 */
.rounded { border-radius: 0.5rem; }
.rounded-lg { border-radius: 0.75rem; }
.rounded-xl { border-radius: 1rem; }
.rounded-2xl { border-radius: 1.5rem; }
.rounded-full { border-radius: 9999px; }

/* 通用阴影工具类 */
.shadow { box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1); }
.shadow-lg { box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1); }
.shadow-xl { box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15); }

/* 通用显示工具类 */
.flex { display: flex; }
.block { display: block; }
.inline-block { display: inline-block; }
.grid { display: grid; }

/* 通用flex工具类 */
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-col { flex-direction: column; }
.gap-4 { gap: 1rem; }
.gap-8 { gap: 2rem; }

/* 通用宽度工具类 */
.w-full { width: 100%; }
.w-half { width: 50%; }
.w-third { width: 33.333%; }
.w-quarter { width: 25%; }

/* 通用高度工具类 */
.h-full { height: 100%; }
.h-96 { height: 24rem; }
.h-64 { height: 16rem; }

/* 通用位置工具类 */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* 通用溢出工具类 */
.overflow-hidden { overflow: hidden; }
.overflow-x-hidden { overflow-x: hidden; }

/* 通用文本对齐工具类 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* 通用过渡工具类 */
.transition-all { transition: all 0.3s ease; }
.transition-colors { transition: color 0.3s ease; }

/* 通用变换工具类 */
.transform { transform: none; }
.translate-y-1 { transform: translateY(0.25rem); }
.-translate-y-1 { transform: translateY(-0.25rem); }
.scale-105 { transform: scale(1.05); }
.scale-110 { transform: scale(1.1); }

/* 通用光标工具类 */
.cursor-pointer { cursor: pointer; }

/* 通用可见性工具类 */
.opacity-0 { opacity: 0; }
.opacity-100 { opacity: 1; }
.visible { visibility: visible; }
.hidden { visibility: hidden; }