/* ============================================
   殴易 - 全球领先的数字资产管理与智能交易平台
   主样式表 style.css
   ============================================ */

/* CSS 变量 - 设计系统 */
:root {
  --primary-color: #00d68f;
  --primary-dark: #00a86f;
  --primary-light: #33e0a5;
  --secondary-color: #1e3a5f;
  --accent-color: #f7b924;
  --danger-color: #ff4757;
  --success-color: #00d68f;
  --info-color: #3498db;
  
  --bg-dark: #0a0e17;
  --bg-card: #141922;
  --bg-card-hover: #1c2333;
  --bg-section: #0d1220;
  
  --text-primary: #ffffff;
  --text-secondary: #b0b8c5;
  --text-muted: #6b7280;
  --text-link: #00d68f;
  
  --border-color: #2a3142;
  --border-light: #1e2536;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(0, 214, 143, 0.3);
  
  --gradient-primary: linear-gradient(135deg, #00d68f 0%, #00a86f 100%);
  --gradient-hero: linear-gradient(135deg, #0a0e17 0%, #141922 50%, #0a0e17 100%);
  --gradient-card: linear-gradient(145deg, #141922 0%, #1c2333 100%);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --container-max: 1200px;
  --container-padding: 20px;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

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

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* ============================================
   容器布局
   ============================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--container-padding);
}

/* ============================================
   导航栏 Header / Nav
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 23, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

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

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--bg-dark);
}

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

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

.nav-list {
  display: flex;
  gap: 4px;
}

.nav-link {
  display: block;
  padding: 10px 16px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: rgba(0, 214, 143, 0.1);
}

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

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 30px;
  height: 24px;
  padding: 0;
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ============================================
   按钮样式
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--bg-dark);
  box-shadow: 0 4px 16px rgba(0, 214, 143, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 214, 143, 0.4);
  color: var(--bg-dark);
}

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

.btn-secondary:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  background: rgba(0, 214, 143, 0.05);
}

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

.btn-outline:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.1rem;
}

.btn-block {
  display: flex;
  width: 100%;
}

/* ============================================
   Hero 区域
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 120px 0 80px;
  background: var(--gradient-hero);
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(0, 214, 143, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(30, 58, 95, 0.3) 0%, transparent 50%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 214, 143, 0.05) 0%, transparent 70%);
  pointer-events: none;
  animation: pulse-glow 4s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
  50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.8; }
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

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

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(0, 214, 143, 0.1);
  border: 1px solid rgba(0, 214, 143, 0.2);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--primary-color);
  margin-bottom: 24px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--primary-color);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 214, 143, 0.7); }
  50% { box-shadow: 0 0 0 10px rgba(0, 214, 143, 0); }
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}

.hero h1 .highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.hero-stat-item {
  text-align: left;
}

.hero-stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-color);
  display: block;
  margin-bottom: 4px;
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-visual {
  position: relative;
  animation: fadeInRight 0.8s ease-out;
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.hero-image-wrapper img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
}

.hero-float-card {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  box-shadow: var(--shadow-lg);
  animation: float 3s ease-in-out infinite;
}

.hero-float-card.card-1 {
  top: 20px;
  left: -30px;
  animation-delay: 0s;
}

.hero-float-card.card-2 {
  bottom: 40px;
  right: -20px;
  animation-delay: 1.5s;
}

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

.float-card-title {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.float-card-value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--success-color);
}

/* ============================================
   通用 Section 样式
   ============================================ */
section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-subtitle {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(0, 214, 143, 0.1);
  border: 1px solid rgba(0, 214, 143, 0.2);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-description {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ============================================
   核心特性 Features 区域
   ============================================ */
.features {
  background: var(--bg-section);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-glow);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: rgba(0, 214, 143, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 2rem;
  transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon {
  background: var(--gradient-primary);
  transform: scale(1.1);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

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

/* ============================================
   交易对/市场 Market 区域
   ============================================ */
.market {
  background: var(--bg-dark);
}

.market-table-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.market-table thead {
  background: rgba(0, 0, 0, 0.2);
}

.market-table th {
  padding: 16px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.market-table td {
  padding: 18px 20px;
  font-size: 0.95rem;
  border-top: 1px solid var(--border-light);
}

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

.market-table tbody tr:hover {
  background: rgba(0, 214, 143, 0.03);
}

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

.coin-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
}

.coin-icon.btc { background: #f7931a; color: #fff; }
.coin-icon.eth { background: #627eea; color: #fff; }
.coin-icon.usdt { background: #26a17b; color: #fff; }
.coin-icon.bnb { background: #f3ba2f; color: #000; }
.coin-icon.sol { background: #9945ff; color: #fff; }
.coin-icon.xrp { background: #00aae4; color: #fff; }

.coin-name {
  font-weight: 600;
  color: var(--text-primary);
}

.coin-pair {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.price-up {
  color: var(--success-color);
  font-weight: 600;
}

.price-down {
  color: var(--danger-color);
  font-weight: 600;
}

/* ============================================
   服务介绍 Services 区域
   ============================================ */
.services {
  background: var(--bg-section);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  align-items: center;
}

.services-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

.services-image img {
  width: 100%;
  height: auto;
}

.services-content h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.3;
}

.services-content p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.service-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.service-item-icon {
  width: 44px;
  height: 44px;
  background: rgba(0, 214, 143, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.service-item-content h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.service-item-content p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
}

/* ============================================
   步骤 Steps 区域
   ============================================ */
.steps {
  background: var(--bg-dark);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.step-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
}

.step-number {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  color: var(--bg-dark);
  font-size: 1.2rem;
  font-weight: 800;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.step-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ============================================
   数据统计 Stats 区域
   ============================================ */
.stats {
  background: var(--gradient-primary);
  position: relative;
  overflow: hidden;
}

.stats::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  position: relative;
  z-index: 2;
}

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

.stat-value {
  font-size: 3rem;
  font-weight: 800;
  color: var(--bg-dark);
  margin-bottom: 8px;
  display: block;
}

.stat-label {
  font-size: 1rem;
  color: rgba(10, 14, 23, 0.8);
  font-weight: 600;
}

/* ============================================
   评价/推荐 Testimonials 区域
   ============================================ */
.testimonials {
  background: var(--bg-section);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.testimonial-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-normal);
}

.testimonial-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
}

.testimonial-stars {
  color: var(--accent-color);
  font-size: 1rem;
  margin-bottom: 16px;
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
  font-style: italic;
}

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

.testimonial-avatar {
  width: 44px;
  height: 44px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--bg-dark);
}

.testimonial-name {
  font-weight: 600;
  color: var(--text-primary);
  display: block;
}

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

/* ============================================
   常见问题 FAQ 区域
   ============================================ */
.faq {
  background: var(--bg-dark);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.faq-item.active {
  border-color: var(--primary-color);
  box-shadow: 0 0 20px rgba(0, 214, 143, 0.1);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  background: transparent;
  transition: all var(--transition-fast);
}

.faq-question:hover {
  color: var(--primary-color);
}

.faq-icon {
  width: 28px;
  height: 28px;
  background: rgba(0, 214, 143, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--primary-color);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--gradient-primary);
  color: var(--bg-dark);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-normal);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 28px 24px;
}

.faq-answer p {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.95rem;
}

/* ============================================
   CTA 行动号召 区域
   ============================================ */
.cta {
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -200px;
  left: -200px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 214, 143, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.cta::after {
  content: '';
  position: absolute;
  bottom: -200px;
  right: -200px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 214, 143, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}

.cta p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================
   页脚 Footer
   ============================================ */
.footer {
  background: #070a10;
  padding: 80px 0 0;
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.8;
  margin-top: 16px;
  max-width: 320px;
}

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  font-size: 1.1rem;
}

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

.footer-col h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
}

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

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 24px 0;
  text-align: center;
}

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

/* ============================================
   页面通用 - 内部页面 Hero
   ============================================ */
.page-hero {
  padding: 140px 0 80px;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(0, 214, 143, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
  z-index: 2;
}

.page-hero p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.breadcrumb {
  margin-bottom: 20px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

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

.breadcrumb span {
  margin: 0 8px;
}

/* ============================================
   About 页面特定样式
   ============================================ */
.about-content-section {
  background: var(--bg-section);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.about-text p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.mission-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.mission-card {
  text-align: center;
  padding: 40px 30px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.mission-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
}

.mission-icon {
  width: 72px;
  height: 72px;
  background: rgba(0, 214, 143, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 2rem;
}

.mission-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

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

/* ============================================
   Products 页面特定样式
   ============================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.product-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.product-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(0, 214, 143, 0.1) 0%, transparent 70%);
  border-radius: 0 var(--radius-lg) 0 0;
}

.product-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-glow);
}

.product-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.product-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.product-card p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

.product-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.product-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.product-features li::before {
  content: '✓';
  width: 22px;
  height: 22px;
  background: rgba(0, 214, 143, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-weight: 700;
  flex-shrink: 0;
  font-size: 0.75rem;
}

/* ============================================
   News 页面特定样式
   ============================================ */
.news-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.news-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
}

.news-card-image {
  width: 100%;
  height: 220px;
  overflow: hidden;
}

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

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

.news-card-content {
  padding: 28px;
}

.news-card-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.news-card-category {
  display: inline-block;
  padding: 2px 10px;
  background: rgba(0, 214, 143, 0.1);
  border-radius: 100px;
  color: var(--primary-color);
}

.news-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.4;
  color: var(--text-primary);
}

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

.news-card-excerpt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* News Detail 页面 */
.news-detail-content {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px;
}

.news-detail-meta {
  display: flex;
  gap: 20px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.news-detail-body {
  color: var(--text-secondary);
  line-height: 1.9;
}

.news-detail-body p {
  margin-bottom: 20px;
}

.news-detail-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 36px 0 16px;
}

.news-detail-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 28px 0 12px;
}

.news-detail-body ul,
.news-detail-body ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

.news-detail-body li {
  margin-bottom: 8px;
  list-style: disc;
}

.news-detail-hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 32px;
}

/* ============================================
   Contact 页面特定样式
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-info-icon {
  width: 52px;
  height: 52px;
  background: rgba(0, 214, 143, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-info-content h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-info-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.contact-form-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.contact-form-wrapper h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 214, 143, 0.15);
}

textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

/* ============================================
   返回顶部按钮
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-dark);
  font-size: 1.2rem;
  font-weight: 700;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-normal);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-3px);
}

/* ============================================
   动画类
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

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

/* 平板设备 */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-visual {
    order: -1;
    max-width: 500px;
    margin: 0 auto;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }

  .stat-value {
    font-size: 2.5rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .news-list {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .mission-grid {
    grid-template-columns: 1fr;
  }
}

/* 手机设备 */
@media (max-width: 768px) {
  section {
    padding: 70px 0;
  }

  .header .container {
    height: 60px;
  }

  .logo {
    font-size: 1.1rem;
  }

  .nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-dark);
    flex-direction: column;
    padding: 20px;
    gap: 10px;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    gap: 4px;
    width: 100%;
  }

  .nav-link {
    padding: 14px 16px;
    border-radius: var(--radius-sm);
  }

  .header-actions {
    width: 100%;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .header-actions .btn {
    display: none;
  }

  .header-actions .btn.primary {
    display: inline-flex;
    width: 100%;
  }

  .hero {
    padding: 100px 0 60px;
    min-height: auto;
  }

  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .hero-stat-value {
    font-size: 1.4rem;
  }

  .hero-float-card.card-1 {
    left: -10px;
  }

  .hero-float-card.card-2 {
    right: -10px;
  }

  .float-card-title {
    font-size: 0.65rem;
  }

  .float-card-value {
    font-size: 1rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer {
    padding: 60px 0 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-brand p {
    max-width: 100%;
  }

  .page-hero {
    padding: 110px 0 60px;
  }

  .news-detail-content {
    padding: 24px;
  }

  .market-table th,
  .market-table td {
    padding: 12px 10px;
    font-size: 0.85rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .cta-actions {
    flex-direction: column;
  }

  .cta-actions .btn {
    width: 100%;
  }
}

/* 小屏幕手机 */
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .stat-value {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
  }
}

/* ============================================
   打印样式
   ============================================ */
@media print {
  .header,
  .footer,
  .back-to-top,
  .mobile-menu-toggle {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  a {
    color: #000;
    text-decoration: underline;
  }
}