/* ========================================
   玄晶引擎官网 - 公共样式 (科技感升级版)
   ======================================== */

/* CSS变量定义 */
:root {
  /* 主色调 - 更明亮的科技感 */
  --primary-bg: #0a1628;
  --primary-dark: #0d1e36;
  --primary-card: #132238;
  
  /* 能量蓝 - 更明亮 */
  --energy-blue: #00d4ff;
  --energy-blue-light: #5ce1ff;
  --energy-blue-dark: #0099cc;
  
  /* 极光紫 */
  --aurora-purple: #a855f7;
  --aurora-purple-light: #c084fc;
  
  /*  accent色 */
  --accent-cyan: #22d3ee;
  --accent-pink: #f472b6;
  
  /* 文字颜色 */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.8);
  --text-muted: rgba(255, 255, 255, 0.5);
  
  /* 边框颜色 */
  --border-color: rgba(0, 212, 255, 0.15);
  --border-hover: rgba(0, 212, 255, 0.5);
  
  /* 渐变 */
  --gradient-blue: linear-gradient(135deg, #00d4ff 0%, #a855f7 100%);
  --gradient-glow: linear-gradient(135deg, rgba(0, 212, 255, 0.3) 0%, rgba(168, 85, 247, 0.3) 100%);
  --gradient-card: linear-gradient(145deg, rgba(19, 34, 56, 0.9) 0%, rgba(13, 30, 54, 0.9) 100%);
  
  /* 阴影 */
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.4);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
  
  /* 间距 */
  --section-padding: 100px;
  --container-max-width: 1280px;
  
  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* 重置样式 */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: linear-gradient(180deg, #0a1628 0%, #0d1e36 50%, #0a1628 100%);
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

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

/* 容器 */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(10, 22, 40, 0.98);
  box-shadow: 0 4px 30px rgba(0, 212, 255, 0.1);
}

.navbar-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo img {
  height: 40px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 16px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: var(--energy-blue);
  background: rgba(0, 212, 255, 0.1);
}

.nav-link.active {
  color: var(--energy-blue);
  background: rgba(0, 212, 255, 0.15);
}

.nav-arrow {
  font-size: 0.7rem;
  transition: var(--transition-fast);
}

.nav-item:hover .nav-arrow {
  transform: rotate(180deg);
}

/* 下拉菜单 */
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--primary-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition-normal);
  box-shadow: var(--shadow-card);
}

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

.dropdown-item {
  display: block;
  padding: 10px 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: var(--transition-fast);
}

.dropdown-item:hover {
  color: var(--energy-blue);
  background: rgba(0, 212, 255, 0.1);
}

/* 导航按钮 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: var(--transition-normal);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

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

.btn-outline:hover {
  border-color: var(--energy-blue);
  color: var(--energy-blue);
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

.btn-primary {
  background: var(--gradient-blue);
  color: #fff;
  font-weight: 600;
}

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

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition-fast);
}

/* ========================================
   英雄区通用样式
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(0, 212, 255, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(168, 85, 247, 0.2) 0%, transparent 50%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(0, 212, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.5;
}

.hero-image {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  width: 45%;
  max-width: 600px;
  z-index: 1;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 212, 255, 0.2);
}

.hero-image img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(0, 212, 255, 0.15);
  border: 1px solid rgba(0, 212, 255, 0.4);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--energy-blue);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #FFFFFF 0%, #00d4ff 50%, #a855f7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ========================================
   区块通用样式
   ======================================== */
.section {
  padding: var(--section-padding) 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-label {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(0, 212, 255, 0.15);
  border: 1px solid rgba(0, 212, 255, 0.4);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--energy-blue);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* ========================================
   卡片样式
   ======================================== */
.card {
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  transition: var(--transition-normal);
}

.card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.card-icon {
  width: 56px;
  height: 56px;
  background: var(--gradient-blue);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.card-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 卡片网格 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

/* ========================================
   数据展示
   ======================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
}

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

.stat-number {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ========================================
   表格样式
   ======================================== */
.table-container {
  overflow-x: auto;
  border-radius: 16px;
  border: 1px solid var(--border-color);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  background: rgba(0, 212, 255, 0.1);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--energy-blue);
}

.data-table td {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.data-table .check {
  color: var(--energy-blue);
  font-weight: 600;
}

.data-table .cross {
  color: var(--text-muted);
}

/* ========================================
   标签
   ======================================== */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  background: rgba(0, 212, 255, 0.15);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--energy-blue);
}

.tag-purple {
  background: rgba(168, 85, 247, 0.2);
  color: var(--aurora-purple-light);
}

/* ========================================
   页脚
   ======================================== */
.footer {
  background: var(--primary-dark);
  border-top: 1px solid var(--border-color);
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  margin-bottom: 16px;
}

.footer-logo img {
  height: 36px;
  width: auto;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.footer-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.footer-link:hover {
  color: var(--energy-blue);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  gap: 16px;
}

.social-link {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.social-link:hover {
  border-color: var(--energy-blue);
  color: var(--energy-blue);
  background: rgba(0, 212, 255, 0.1);
}

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

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

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

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.6);
  }
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease forwards;
}

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

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

/* 滚动显示动画 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
  .nav-menu {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero-image {
    display: none;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 60px;
  }
  
  .navbar-container {
    height: 64px;
  }
  
  .hero {
    padding-top: 64px;
    min-height: auto;
    padding-bottom: 80px;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
}

/* ========================================
   移动端菜单
   ======================================== */
.mobile-menu {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--primary-bg);
  z-index: 999;
  padding: 24px;
  transform: translateX(100%);
  transition: var(--transition-normal);
  overflow-y: auto;
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-nav-item {
  border-bottom: 1px solid var(--border-color);
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  font-size: 1rem;
  color: var(--text-primary);
}

.mobile-dropdown {
  padding-left: 16px;
  padding-bottom: 16px;
  display: none;
}

.mobile-dropdown.active {
  display: block;
}

.mobile-dropdown-item {
  display: block;
  padding: 10px 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* CTA区块 */
.cta-section {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.08) 0%, rgba(168, 85, 247, 0.08) 100%);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.cta-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}