/* 海易云GNMCDN - 科技工业风格 */
/* 设计理念：深色基底 + 高对比强调 + 几何线条 */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;700&display=swap');

/* ===== CSS变量 - 科技工业配色 ===== */
:root {
  --bg-primary: #0a0a0b;
  --bg-secondary: #111113;
  --bg-card: #141416;
  --bg-elevated: #1a1a1c;
  
  --accent-cyan: #00d4aa;
  --accent-blue: #0088ff;
  --accent-orange: #ff6b35;
  --accent-red: #ff3333;
  
  --text-primary: #f0f0f0;
  --text-secondary: #888888;
  --text-muted: #555555;
  
  --border-color: #222222;
  --border-accent: #00d4aa;
  
  --grid-color: rgba(0, 212, 170, 0.03);
  
  --font-mono: 'JetBrains Mono', monospace;
  --font-sans: 'Noto Sans SC', sans-serif;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 背景网格效果 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: -1;
}

.gnmcdn-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* ===== 头部导航 ===== */
.gnmcdn-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 0;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
}

.header-logo .logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-image {
  height: 36px;
  width: auto;
  filter: brightness(1.2);
}

.console-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: transparent;
  color: var(--accent-cyan);
  border: 1px solid var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.2s ease;
}

.console-btn:hover {
  background: var(--accent-cyan);
  color: var(--bg-primary);
  box-shadow: 0 0 20px rgba(0, 212, 170, 0.3);
}

/* ===== 英雄区域 ===== */
.hero-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 80px 0;
  border-bottom: 1px solid var(--border-color);
}

.hero-title {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -1px;
}

.hero-title::before {
  content: '>';
  color: var(--accent-cyan);
  margin-right: 12px;
}

.hero-subtitle {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--accent-cyan);
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.hero-description {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-stats {
  display: flex;
  gap: 40px;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--accent-cyan);
}

.stat-item i {
  font-size: 1.5rem;
  color: var(--accent-cyan);
}

.stat-number {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  display: block;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ===== Canvas网络可视化 ===== */
.hero-visual {
  position: relative;
  height: 450px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  background: var(--bg-secondary);
}

.hero-visual canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* ===== 分区标题 ===== */
.section-title {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  text-align: left;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 60px;
  height: 1px;
  background: var(--accent-cyan);
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  text-align: left;
}

/* ===== 核心优势 ===== */
.features-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  padding: 30px;
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
}

.feature-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-4px);
}

.feature-icon {
  font-size: 2rem;
  color: var(--accent-cyan);
  margin-bottom: 20px;
  display: inline-block;
  padding: 12px;
  border: 1px solid var(--border-color);
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.feature-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== 套餐区域 ===== */
.pricing-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border-color);
}

.pricing-category {
  margin-bottom: 60px;
}

.pricing-category:last-child {
  margin-bottom: 0;
}

.category-title {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.category-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 30px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
}

.pricing-card:hover {
  border-color: var(--accent-cyan);
}

.pricing-card.featured {
  border-color: var(--accent-cyan);
  border-width: 2px;
  position: relative;
}

.pricing-card.featured::before {
  content: 'RECOMMENDED';
  position: absolute;
  top: 0;
  right: 0;
  background: var(--accent-cyan);
  color: var(--bg-primary);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 4px 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.plan-header {
  padding: 30px;
  border-bottom: 1px solid var(--border-color);
  text-align: center;
}

.plan-title {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.plan-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.price-currency {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--accent-cyan);
}

.price-amount {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.price-period {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.plan-description {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 12px;
}

.plan-features {
  flex-grow: 1;
  padding: 20px 30px;
}

.feature-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.85rem;
}

.feature-row:last-child {
  border-bottom: none;
}

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

.feature-value {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-weight: 500;
}

.plan-btn {
  margin: 0 30px 30px;
  padding: 14px 24px;
  background: transparent;
  color: var(--accent-cyan);
  border: 1px solid var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.plan-btn:hover {
  background: var(--accent-cyan);
  color: var(--bg-primary);
}

.plan-btn:disabled {
  border-color: var(--text-muted);
  color: var(--text-muted);
  cursor: not-allowed;
}

/* 公益套餐 */
.public-card .plan-title {
  color: var(--text-primary);
}

.public-card .price-amount {
  color: var(--accent-orange);
}

.public-card .feature-value {
  color: var(--accent-orange);
}

/* 即将推出 */
.pricing-card.coming-soon {
  opacity: 0.6;
  border-style: dashed;
}

.pricing-card.coming-soon .plan-title,
.pricing-card.coming-soon .price-currency,
.pricing-card.coming-soon .price-amount,
.pricing-card.coming-soon .feature-name,
.pricing-card.coming-soon .feature-value {
  color: var(--text-muted);
}

/* 套餐说明 */
.pricing-note {
  margin-top: 40px;
  padding: 20px 24px;
  background: var(--bg-card);
  border-left: 3px solid var(--accent-cyan);
}

.note-content {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.note-content i {
  font-size: 1.2rem;
  color: var(--accent-cyan);
  margin-top: 2px;
}

.note-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

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

/* ===== 技术特性 ===== */
.tech-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border-color);
}

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

.tech-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 30px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}

.tech-icon {
  font-size: 1.5rem;
  color: var(--accent-blue);
  padding: 16px;
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

.tech-title {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.tech-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== 使用场景 ===== */
.use-cases-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border-color);
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.use-case-card {
  background: var(--bg-card);
  padding: 30px;
  border: 1px solid var(--border-color);
  text-align: center;
  transition: all 0.2s ease;
}

.use-case-card:hover {
  border-color: var(--accent-blue);
}

.use-case-icon {
  font-size: 2rem;
  color: var(--accent-blue);
  margin-bottom: 20px;
  padding: 16px;
  border: 1px solid var(--border-color);
  display: inline-block;
}

.use-case-title {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.use-case-description {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== CTA区域 ===== */
.cta-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 80px 40px;
  text-align: center;
  margin-bottom: 0;
}

.cta-title {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.cta-description {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

#try-now-btn {
  display: inline-block;
  padding: 16px 48px;
  background: var(--accent-cyan);
  color: var(--bg-primary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 2px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

#try-now-btn:hover {
  background: var(--text-primary);
  box-shadow: 0 0 30px rgba(0, 212, 170, 0.4);
}

/* ===== 底部 ===== */
.gnmcdn-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-bottom: 40px;
}

.footer-section h3 {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.contact-info {
  list-style: none;
  padding: 0;
}

.contact-info li {
  margin-bottom: 12px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-info i {
  color: var(--accent-cyan);
  width: 20px;
  font-size: 0.9rem;
}

.contact-info a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.contact-info a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.copyright {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.icp-info {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-section {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .hero-visual {
    order: -1;
    height: 350px;
  }
  
  .features-grid,
  .use-cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }
  
  .stat-item {
    justify-content: flex-start;
  }
  
  .features-grid,
  .pricing-grid,
  .tech-grid,
  .use-cases-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
}