/* 主样式文件 - AI SaaS 生态系统 */

/* 变量定义 */
:root {
  /* 主色调 - 蓝绿渐变 */
  --primary-start: #3b82f6;
  --primary-end: #10b981;
  --primary-gradient: linear-gradient(135deg, var(--primary-start) 0%, var(--primary-end) 100%);
  
  /* 辅助色 - 紫粉渐变 */
  --accent-start: #8b5cf6;
  --accent-end: #ec4899;
  --accent-gradient: linear-gradient(135deg, var(--accent-start) 0%, var(--accent-end) 100%);
  
  /* 中性色 */
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-light: #9ca3af;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --border-color: #e5e7eb;
  
  /* 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  
  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-xl: 700ms ease;
}

/* 基础重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans SC', 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
}

/* 标题 */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

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

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

/* 按钮基础 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition-normal);
  gap: 0.5rem;
}

.btn-primary {
  background: var(--primary-gradient);
  color: white;
  box-shadow: var(--shadow-md);
}

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

.btn-secondary {
  background: white;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
}

/* 容器 */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
}

.navbar-logo-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.navbar-nav a {
  color: var(--text-secondary);
  font-weight: 500;
  padding: var(--spacing-xs) 0;
  position: relative;
}

.navbar-nav a:hover,
.navbar-nav a.active {
  color: var(--text-primary);
}

.navbar-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.navbar-nav a:hover::after,
.navbar-nav a.active::after {
  transform: scaleX(1);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.navbar-dropdown {
  position: relative;
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.navbar-dropdown:hover {
  color: var(--text-primary);
}

.navbar-dropdown i {
  font-size: 0.75rem;
  transition: transform var(--transition-fast);
}

.navbar-dropdown:hover i {
  transform: rotate(180deg);
}

.navbar-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  z-index: 1001;
}

.navbar-dropdown:hover .navbar-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.navbar-dropdown-menu a {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  font-weight: 500;
  text-decoration: none;
  transition: background var(--transition-fast);
}

.navbar-dropdown-menu a:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* Hero区域 */
.hero {
  padding: calc(100px + var(--spacing-2xl)) 0 var(--spacing-2xl);
  background: linear-gradient(180deg, #eff6ff 0%, #f0fdf4 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 70%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--spacing-2xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  animation: fadeInUp 0.8s ease-out;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 100px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-md);
}

.hero-badge span {
  color: var(--primary-start);
  font-weight: 600;
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-md);
  line-height: 1.1;
}

.hero-title .gradient {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.hero-stats {
  display: flex;
  gap: var(--spacing-xl);
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat-number {
  font-size: 2rem;
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.hero-visual {
  animation: fadeInRight 0.8s ease-out 0.2s both;
}

.hero-card {
  background: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  position: relative;
}

.hero-card::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: var(--primary-gradient);
  border-radius: var(--radius-lg);
  z-index: -1;
  opacity: 0.3;
}

.hero-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.hero-card-title {
  font-size: 1.125rem;
  font-weight: 600;
}

.hero-card-status {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  background: #dcfce7;
  color: #166534;
  padding: 0.25rem 0.5rem;
  border-radius: 100px;
}

.hero-card-status-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.hero-card-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.hero-card-metric {
  padding: var(--spacing-sm);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
}

.hero-card-metric-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.hero-card-metric-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.hero-card-metric-trend {
  font-size: 0.75rem;
  color: #16a34a;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* 章节基础 */
.section {
  padding: var(--spacing-2xl) 0;
}

.section-alt {
  background: white;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.section-title .gradient {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

/* 卡片网格 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.card {
  background: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.card-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.card-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 服务层次 */
.service-levels {
  display: grid;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.service-level {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  align-items: center;
}

.service-level:nth-child(even) {
  grid-template-columns: 2fr 1fr;
}

.service-level:nth-child(even) .service-level-info {
  order: 2;
}

.service-level:nth-child(even) .service-level-visual {
  order: 1;
}

.service-level-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--primary-gradient);
  color: white;
  border-radius: 50%;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.service-level-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.service-level-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.service-level-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.service-level-feature {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem var(--spacing-sm);
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.service-level-feature i {
  color: var(--primary-start);
}

.service-level-visual {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  text-align: center;
}

.service-level-visual-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}

.service-level-visual-label {
  color: var(--text-secondary);
}

/* 案例卡片 */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.case-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.case-card-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 4rem;
}

.case-card:nth-child(2) .case-card-header {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.case-card:nth-child(3) .case-card-header {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

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

.case-card-role {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  background: var(--bg-secondary);
  border-radius: 100px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.case-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.case-card-description {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-md);
}

.case-card-metrics {
  display: flex;
  gap: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.case-card-metric {
  flex: 1;
}

.case-card-metric-value {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.case-card-metric-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* 生态系统 */
.ecosystem {
  text-align: center;
}

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

.ecosystem-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.ecosystem-node-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
}

.ecosystem-node.platform .ecosystem-node-icon {
  width: 120px;
  height: 120px;
  background: var(--primary-gradient);
  font-size: 3rem;
}

.ecosystem-node.entrepreneurs .ecosystem-node-icon {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.ecosystem-node.developers .ecosystem-node-icon {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.ecosystem-node.affiliates .ecosystem-node-icon {
  background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.ecosystem-node-label {
  font-weight: 600;
}

.ecosystem-arrow {
  font-size: 2rem;
  color: var(--text-light);
}

.ecosystem-cta {
  margin-top: var(--spacing-xl);
}

/* Footer */
.footer {
  background: var(--text-primary);
  color: white;
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 700;
  font-size: 1.25rem;
}

.footer-logo-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-description {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

.footer-section-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  gap: var(--spacing-sm);
}

.footer-bottom-text {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
  text-align: center;
}

.footer-social {
  display: flex;
  gap: var(--spacing-sm);
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.1);
  color: white;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--primary-gradient);
}

/* Footer 旗下应用区 */
.footer-apps {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

.footer-app-card {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
}

.footer-app-card:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.footer-app-card-icon {
  width: 36px;
  height: 36px;
  min-width: 36px;
  background: var(--primary-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.875rem;
}

.footer-app-card-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-app-card-name {
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
}

.footer-app-card-desc {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.75rem;
  line-height: 1.4;
}

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

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.02);
  }
}

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

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(59, 130, 246, 0.6);
  }
}

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

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

@keyframes border-flow {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* 玻璃态效果 */
.glass {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.glass-dark {
  background: rgba(31, 41, 55, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* 渐变文字 */
.gradient-text {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.accent-gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 发光效果 */
.glow-primary {
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.4);
}

.glow-accent {
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.4);
}

/* 悬停缩放 */
.hover-scale {
  transition: transform var(--transition-normal);
}

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

/* 背景装饰 */
.bg-pattern {
  background-image: 
    radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.05) 0%, transparent 70%);
}

/* 按钮增强 */
.btn-glow {
  position: relative;
  overflow: hidden;
}

.btn-glow::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--primary-gradient);
  opacity: 1;
  transition: opacity var(--transition-fast);
}

.btn-glow:hover::before {
  opacity: 0.9;
}

.btn-glow span {
  position: relative;
  z-index: 1;
}

.btn-animated {
  position: relative;
  overflow: hidden;
}

.btn-animated::after {
  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 var(--transition-slow);
}

.btn-animated:hover::after {
  left: 100%;
}

/* 卡片增强 */
.card-elevated {
  position: relative;
  overflow: hidden;
}

.card-elevated::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

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

.card-gradient-border {
  position: relative;
}

.card-gradient-border::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: var(--primary-gradient);
  -webkit-mask: 
    linear-gradient(#fff 0 0) content-box, 
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card-gradient-border:hover::before {
  opacity: 1;
}

/* 数字动画 */
.counter {
  display: inline-block;
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--primary-start), var(--primary-end));
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-end);
}

/* 选择文本颜色 */
::selection {
  background: rgba(59, 130, 246, 0.3);
  color: var(--text-primary);
}

/* 焦点样式 */
button:focus,
a:focus,
input:focus,
textarea:focus {
  outline: 2px solid var(--primary-start);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* 加载动画 */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(59, 130, 246, 0.2);
  border-radius: 50%;
  border-top-color: var(--primary-start);
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

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

.wave-bg::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 200%;
  height: 100px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120' preserveAspectRatio='none'%3E%3Cpath d='M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z' fill='%233b82f6' fill-opacity='0.1'/%3E%3C/svg%3E");
  background-repeat: repeat-x;
  animation: wave-move 10s linear infinite;
}

@keyframes wave-move {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}