* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  background: linear-gradient(135deg, #f0f4ff 0%, #e8ecff 100%);
  color: #1e293b;
  line-height: 1.6;
}
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 导航栏 */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 48px;
  gap: 24px;
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}
.logo {
  font-size: 28px;
  font-weight: 800;
  color: white;
  text-decoration: none;
  letter-spacing: -0.5px;
}
.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
  flex-wrap: wrap;
}
.nav-links a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  transition: color 0.2s;
  font-size: 15px;
}
.nav-links a:hover {
  color: white;
}
.btn-outline {
  border: 1.5px solid white;
  padding: 8px 20px;
  border-radius: 40px;
  color: white;
  background: transparent;
  transition: all 0.2s;
}
.btn-outline:hover {
  background: white;
  color: #3b82f6;
}
.btn-primary {
  background: white;
  color: #3b82f6;
  padding: 12px 32px;
  border-radius: 40px;
  text-decoration: none;
  font-weight: 600;
  display: inline-block;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* Hero区域 - 全屏背景 */
.hero-wrapper {
  width: 100vw;
  max-width: 100%;
  position: relative;
  overflow: hidden;
  margin: 0;
  min-height: 400px;
}

.hero-wrapper::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("bg.jpeg") center/cover no-repeat;
  opacity: 0.8;
  z-index: 0;
}

.hero {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  padding: 150px 24px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.9);
  padding: 10px 20px;
  border-radius: 20px;
  margin-bottom: 24px;
  font-size: 14px;
  color: #3b82f6;
  font-weight: 500;
}
.hero-content h1 {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  color: #ffffff;
  margin-bottom: 24px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}
.hero-content p {
  font-size: clamp(16px, 3vw, 22px);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 0 1px 5px rgba(0, 0, 0, 0.2);
}
.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-download {
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  color: white;
  padding: 14px 36px;
  border-radius: 40px;
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
}
.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.45);
}
.btn-learn {
  background: white;
  color: #3b82f6;
  padding: 14px 36px;
  border-radius: 40px;
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s ease;
  border: 2px solid #3b82f6;
}
.btn-learn:hover {
  background: rgba(59, 130, 246, 0.05);
  transform: translateY(-2px);
}

/* 标题样式 */
.section-title {
  text-align: center;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  margin: 80px 0 48px;
  color: #0f172a;
}

/* 特性卡片 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-bottom: 80px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.feature-card {
  background: white;
  padding: 36px 28px;
  border-radius: 24px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  transition:
    transform 0.2s,
    box-shadow 0.2s;
  text-align: center;
  border: 1px solid rgba(59, 130, 246, 0.08);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px rgba(59, 130, 246, 0.15);
}
.feature-icon {
  font-size: 52px;
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 22px;
  margin-bottom: 12px;
  color: #0f172a;
}
.feature-card p {
  color: #64748b;
  font-size: 15px;
}

/* 统计数据 */
.stats {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: white;
  padding: 60px 0;
  margin: 60px 0;
  border-radius: 32px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  text-align: center;
}
.stat-number {
  font-size: 48px;
  font-weight: 800;
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 适用场景 */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 80px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.scenario-card {
  background: white;
  padding: 32px;
  border-radius: 20px;
  text-align: center;
  transition: transform 0.2s;
  border: 1px solid rgba(59, 130, 246, 0.08);
}
.scenario-card:hover {
  transform: translateY(-4px);
}
.scenario-icon {
  font-size: 48px;
  margin-bottom: 16px;
}
.scenario-card h3 {
  color: #0f172a;
  margin-bottom: 10px;
}
.scenario-card p {
  color: #64748b;
  font-size: 14px;
}

/* 平台支持 */
.platforms {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;
  margin: 40px 0;
  padding: 32px;
  background: white;
  border-radius: 24px;
}
.platform-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 24px;
  border-radius: 16px;
  transition: all 0.2s;
  min-width: 100px;
}
.platform-item:hover {
  background: rgba(59, 130, 246, 0.05);
}
.platform-icon {
  font-size: 40px;
}
.platform-name {
  font-size: 14px;
  color: #475569;
  font-weight: 500;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto 80px;
}
.accordion-item {
  background: white;
  margin-bottom: 16px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
.accordion-question {
  padding: 20px 24px;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: white;
  transition: background 0.2s;
}
.accordion-question:hover {
  background: #f8fafc;
}
.accordion-answer {
  padding: 0 24px 20px;
  color: #64748b;
  display: none;
  border-top: 1px solid #f1f5f9;
  font-size: 15px;
}
.accordion-item.active .accordion-answer {
  display: block;
}

/* CTA */
.cta {
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  color: white;
  padding: 80px 0;
  text-align: center;
  margin-bottom: 80px;
}
.cta h2 {
  font-size: clamp(28px, 4vw, 40px);
  margin-bottom: 16px;
}
.cta p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
  font-size: 18px;
}
.btn-white {
  background: white;
  color: #3b82f6;
  padding: 14px 40px;
  border-radius: 40px;
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  display: inline-block;
  transition: all 0.2s;
}
.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

/* 页脚 */
.footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 56px 0 24px;
}
.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}
.footer-brand {
  color: white;
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
}
.footer h4 {
  color: white;
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-links a {
  color: #94a3b8;
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: white;
}
.footer-copyright {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid #1e293b;
  font-size: 14px;
}

/* 产品页专属样式 */
.hero-product {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  padding: 80px 0;
  text-align: center;
  margin: 32px 0;
  border-radius: 24px;
}
.hero-product h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  margin-bottom: 20px;
  color: white;
}
.hero-product p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
}
.hero-badges {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}
.hero-badge {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 8px 20px;
  border-radius: 40px;
  color: white;
  font-size: 14px;
}

.product-section-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  margin: 56px 0 28px;
  color: #0f172a;
}

/* 功能列表 */
.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-bottom: 60px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.feature-block {
  background: white;
  border-radius: 24px;
  padding: 32px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  transition: all 0.2s;
  border: 1px solid rgba(59, 130, 246, 0.08);
  text-align: center;
}
.feature-block:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(59, 130, 246, 0.12);
}
.feature-block h3 {
  font-size: 22px;
  margin-bottom: 14px;
  color: #0f172a;
}
.feature-block p {
  color: #64748b;
  font-size: 15px;
  line-height: 1.7;
}

/* 节点标签 */
.node-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 24px 0 48px;
}
.node-tag {
  background: white;
  border: 1px solid rgba(59, 130, 246, 0.15);
  padding: 12px 20px;
  border-radius: 40px;
  font-weight: 500;
  color: #3b82f6;
  font-size: 14px;
  transition: all 0.2s;
}
.node-tag:hover {
  background: rgba(59, 130, 246, 0.08);
  transform: translateY(-2px);
}

/* 平台展示 */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin: 48px 0;
}
.platform-card {
  background: white;
  border-radius: 24px;
  padding: 32px;
  text-align: center;
  transition: all 0.2s;
  border: 1px solid rgba(59, 130, 246, 0.08);
}
.platform-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(59, 130, 246, 0.12);
}
.platform-card h3 {
  font-size: 20px;
  margin-bottom: 8px;
  color: #0f172a;
}
.platform-card p {
  color: #64748b;
  font-size: 14px;
}

/* 下载指引 */
.download-section {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border-radius: 32px;
  padding: 48px;
  margin: 48px 0 64px;
  color: white;
}
.download-section h2 {
  font-size: 28px;
  margin-bottom: 32px;
  text-align: center;
}
.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
}
.download-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 24px;
  text-align: center;
  transition: all 0.2s;
}
.download-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}
.download-icon {
  font-size: 40px;
  margin-bottom: 12px;
}
.download-name {
  font-weight: 600;
  margin-bottom: 4px;
}
.download-version {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
}

/* 用户评价 */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 60px;
}
.testimonial {
  background: white;
  border-radius: 20px;
  padding: 28px;
  border-left: 4px solid #3b82f6;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}
.testimonial p {
  color: #475569;
  margin-bottom: 16px;
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
}
.author-info {
  font-size: 14px;
}
.author-name {
  font-weight: 600;
  color: #0f172a;
}
.author-role {
  color: #64748b;
  font-size: 12px;
}

/* 技术规格 */
.specs-table {
  background: white;
  border-radius: 24px;
  padding: 32px;
  margin-bottom: 48px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}
.specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.spec-item {
  padding: 20px;
  background: #f8fafc;
  border-radius: 12px;
}
.spec-label {
  color: #64748b;
  font-size: 14px;
  margin-bottom: 4px;
}
.spec-value {
  color: #0f172a;
  font-weight: 600;
}

/* CTA栏 */
.cta-bar {
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  color: white;
  padding: 64px 0;
  text-align: center;
  border-radius: 24px;
  margin-bottom: 64px;
}
.cta-bar h2 {
  font-size: clamp(24px, 3vw, 32px);
  margin-bottom: 12px;
}
.cta-bar p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 28px;
}

/* 响应式 */
@media (max-width: 768px) {
  .navbar {
    padding: 12px 20px;
  }
  .nav-links {
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
  }
  .hero {
    padding: 50px 0 40px;
  }
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  .section-title {
    margin: 48px 0 32px;
  }
  .features-grid,
  .scenario-grid,
  .feature-list {
    grid-template-columns: 1fr;
  }
  .stats {
    border-radius: 20px;
    margin: 40px 0;
    padding: 40px 0;
  }
  .stat-number {
    font-size: 36px;
  }
  .container {
    padding: 0 16px;
  }
  .hero-product h1 {
    font-size: 28px;
  }
  .download-section {
    padding: 32px 20px;
    border-radius: 20px;
  }
}