/* ==========================================================================
   聚盟云 JUMENG CLOUD - “活的、会呼吸的网络” (Living Network) 原生样式表
   配色：深海军蓝背景 #0A1220、主色电光蓝 #4F7CFF、辅助青绿 #2DD4BF
   字体：全站 "Manrope", sans-serif
   ========================================================================== */

:root {
  --bg-navy: #0A1220;
  --bg-card: rgba(16, 26, 46, 0.75);
  --border-glow: rgba(79, 124, 255, 0.25);
  --border-cyan: rgba(45, 212, 191, 0.3);
  --text-pure: #FFFFFF;
  --text-dim: #94A3B8;
  --accent-blue: #4F7CFF;
  --accent-cyan: #2DD4BF;
  --radius-card: 20px;
  --radius-pill: 9999px;
  --font-main: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-navy);
  color: var(--text-pure);
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
}

body {
  background-color: var(--bg-navy);
  color: var(--text-pure);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 全屏固定 HTML5 Canvas 背景 */
#network-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* 前台容器层 */
.app-wrapper {
  position: relative;
  z-index: 1;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px 80px 20px;
}

/* 吸顶导航栏 */
.header-nav {
  position: sticky;
  top: 16px;
  z-index: 100;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.nav-glass-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 18, 32, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-pill);
  padding: 12px 28px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(79, 124, 255, 0.15);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  color: #FFFFFF;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand-pulse {
  width: 10px;
  height: 10px;
  background: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent-cyan);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 24px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dim);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: #FFFFFF;
}

.nav-cta {
  background: linear-gradient(135deg, var(--accent-blue) 0%, #3B82F6 100%);
  color: #FFFFFF !important;
  padding: 8px 22px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(79, 124, 255, 0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease !important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 124, 255, 0.6);
}

/* 主视觉 Hero 区域 */
.hero-section {
  text-align: center;
  padding: 60px 0 40px 0;
}

.hero-pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(45, 212, 191, 0.1);
  border: 1px solid var(--border-cyan);
  color: var(--accent-cyan);
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #FFFFFF 30%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-dim);
  max-width: 780px;
  margin: 0 auto 36px auto;
  line-height: 1.7;
}

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

.btn-cyber-blue {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent-blue) 0%, #2563EB 100%);
  color: #FFFFFF;
  padding: 16px 36px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(79, 124, 255, 0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-cyber-blue:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(79, 124, 255, 0.6);
}

.btn-cyber-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 26, 46, 0.8);
  color: #FFFFFF;
  padding: 16px 32px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  border: 1px solid var(--border-cyan);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.btn-cyber-ghost:hover {
  background: rgba(45, 212, 191, 0.15);
  transform: translateY(-2px);
}

/* 【可交互】全球节点选择器与实时拓扑 */
.node-interactive-section {
  padding: 40px 0 60px 0;
}

.node-control-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-card);
  padding: 36px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.node-selector-header {
  text-align: center;
  margin-bottom: 28px;
}

.node-selector-header h3 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.node-capsules-group {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.node-pill-btn {
  background: rgba(10, 18, 32, 0.8);
  border: 1px solid rgba(79, 124, 255, 0.3);
  color: var(--text-dim);
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.node-pill-btn.active {
  background: rgba(45, 212, 191, 0.15);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 16px rgba(45, 212, 191, 0.3);
}

/* 路线动画与脉冲点 */
.route-visual-box {
  width: 100%;
  height: 90px;
  margin-bottom: 30px;
  position: relative;
}

.route-svg {
  width: 100%;
  height: 100%;
}

.route-track {
  fill: none;
  stroke: rgba(79, 124, 255, 0.2);
  stroke-width: 3;
}

.pulse-dot-flying {
  fill: var(--accent-cyan);
  filter: drop-shadow(0 0 8px var(--accent-cyan));
}

/* 指标面板仪表盘 */
.metrics-dashboard-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
}

.metric-cell {
  background: rgba(10, 18, 32, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 20px;
  text-align: center;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.metric-val {
  font-size: 2.2rem;
  font-weight: 800;
  color: #FFFFFF;
}

.metric-unit {
  font-size: 1rem;
  color: var(--accent-cyan);
  margin-left: 4px;
}

/* 3 张功能卡 */
.features-cards-section {
  padding: 60px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 40px;
}

.section-head h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-dim);
  font-size: 1.05rem;
}

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

.feat-glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-card);
  padding: 36px 30px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.feat-glass-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-cyan);
  box-shadow: 0 14px 30px rgba(45, 212, 191, 0.15);
}

.feat-icon-glow {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(79, 124, 255, 0.15);
  border: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 24px;
  color: var(--accent-cyan);
}

.feat-glass-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.feat-glass-card p {
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* 流媒体与 AI 支持矩阵卡 */
.support-media-section {
  padding: 30px 0 60px 0;
}

.support-glass-card {
  background: linear-gradient(135deg, rgba(79, 124, 255, 0.15) 0%, rgba(45, 212, 191, 0.15) 100%);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-card);
  padding: 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}

.support-chips-wrap {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.support-chip-glow {
  background: rgba(10, 18, 32, 0.85);
  border: 1px solid var(--border-glow);
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.92rem;
  color: #FFFFFF;
}

/* 定价对比表 */
.pricing-section {
  padding: 60px 0;
}

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

.pricing-cyber-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-card);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.pricing-cyber-card.featured {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 30px rgba(45, 212, 191, 0.2);
  background: linear-gradient(180deg, rgba(16, 26, 46, 0.95) 0%, rgba(10, 18, 32, 0.95) 100%);
}

.badge-glow {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-cyan);
  color: #0A1220;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

.plan-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.plan-desc {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.price-box {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
}

.currency {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

.amount {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1;
}

.period {
  color: var(--text-dim);
  font-size: 0.95rem;
}

.plan-features {
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  margin-bottom: 30px;
}

.plan-features li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
}

.check-cyan {
  color: var(--accent-cyan);
  font-weight: 800;
}

.btn-plan {
  display: block;
  text-align: center;
  background: rgba(79, 124, 255, 0.15);
  color: #FFFFFF;
  border: 1px solid var(--border-glow);
  padding: 14px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s ease;
}

.pricing-cyber-card.featured .btn-plan {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, #059669 100%);
  color: #0A1220;
  border: none;
  font-weight: 800;
}

.btn-plan:hover {
  transform: translateY(-2px);
  background: var(--accent-blue);
  color: #FFFFFF;
}

.pricing-cyber-card.featured .btn-plan:hover {
  background: #2DD4BF;
  box-shadow: 0 0 20px rgba(45, 212, 191, 0.5);
}

/* 用户真实评价 */
.reviews-section {
  padding: 60px 0;
}

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

.review-card-glow {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-card);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-stars {
  color: #FBBF24;
  margin-bottom: 14px;
}

.review-text {
  font-size: 0.95rem;
  line-height: 1.65;
  color: #E2E8F0;
  margin-bottom: 20px;
}

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

.avatar-cyan {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(45, 212, 191, 0.2);
  border: 1px solid var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--accent-cyan);
}

.reviewer-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
}

.reviewer-info p {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* FAQ 手风琴 (平滑 max-height 过渡，单开) */
.faq-section {
  padding: 60px 0;
  max-width: 860px;
  margin: 0 auto;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: 16px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: #FFFFFF;
}

.faq-icon {
  font-size: 1.3rem;
  color: var(--accent-cyan);
  transition: transform 0.25s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  background: rgba(10, 18, 32, 0.5);
}

.faq-answer-inner {
  padding: 0 24px 20px 24px;
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* 页脚 Footer */
.footer-wrap {
  border-top: 1px solid var(--border-glow);
  background: rgba(10, 18, 32, 0.95);
  padding: 50px 20px 40px 20px;
  margin-top: 60px;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.footer-brand {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.footer-links-grid {
  display: flex;
  gap: 32px;
  list-style: none;
}

.footer-links-grid a {
  text-decoration: none;
  color: var(--text-dim);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.footer-links-grid a:hover {
  color: var(--accent-cyan);
}

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

/* 响应式媒体查询 */
@media (max-width: 992px) {
  .metrics-dashboard-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-cards-grid,
  .pricing-cards-grid,
  .review-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
  }
  .metrics-dashboard-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .btn-cyber-blue, .btn-cyber-ghost {
    width: 100%;
    justify-content: center;
  }
  .footer-links-grid {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }
}