/* 全局样式 */
:root {
  --primary-color: #1890ff;
  --secondary-color: #722ed1;
  --text-color: #333;
  --text-light: #666;
  --bg-color: #fff;
  --bg-light: #f5f7ff;
  --border-radius: 8px;
  --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  --transition: all 0.3s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-color);
  line-height: 1.6;
  background-color: var(--bg-color);
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

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

a:hover {
  color: var(--secondary-color);
}

section {
  padding: 4rem 0;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn.primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
}

.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(24, 144, 255, 0.3);
}

.btn.secondary {
  background-color: white;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

.btn.secondary:hover {
  background-color: var(--bg-light);
  transform: translateY(-2px);
}

.btn.large {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

/* 产品英雄区域 */
.product-hero {
  background: linear-gradient(135deg, var(--bg-light), rgba(255, 255, 255, 0.8));
  /* background: white; */
  padding: 6rem 0 4rem;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.product-hero h1 {
  font-size: 3rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-light);
  margin-bottom: 0;
}

.section-subtitle {
  text-align: center;
  font-size: 1.125rem;
  color: var(--text-light);
  margin-bottom: 3rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* 产品展示区 */
.product-showcase {
  background-color: var(--bg-color);
  padding: 4rem 0;
}

.product-showcase h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  margin-top: 3rem;
}

.showcase-item {
  background-color: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.showcase-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

.showcase-item img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.showcase-item h3 {
  font-size: 1.5rem;
  margin: 1.5rem 1.5rem 0.75rem;
  color: var(--text-color);
}

.showcase-item p {
  margin: 0 1.5rem 1.5rem;
  color: var(--text-light);
  line-height: 1.8;
  flex: 1;
}

/* 核心功能 */
.features {
  background: linear-gradient(135deg, var(--bg-light), rgba(255, 255, 255, 0.8));
  padding: 4rem 0;
}

.features h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background-color: white;
  padding: 2.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  text-align: center;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
}

.feature-icon i {
  font-size: 2.5rem;
  color: white;
}

.feature-icon svg {
  width: 2.5rem;
  height: 2.5rem;
  fill: white;
  display: block;
  margin: 0 auto;
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.feature-card p {
  color: var(--text-light);
  line-height: 1.8;
}

.feature-desc {
  margin-bottom: 1rem;
}

.feature-detail {
  padding: 1.5rem 0;
  margin-top: 1rem;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.feature-detail ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.feature-detail li {
  padding: 0.75rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-light);
  line-height: 1.8;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.feature-detail li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
  font-size: 1.2rem;
}


/* 产品优势 */
.advantages {
  /* background-color: var(--bg-light); */
  padding: 4rem 0;
}

.advantages h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
}

.advantages-list {
  max-width: 900px;
  margin: 0 auto;
}

.advantage-item {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  margin-bottom: 3rem;
  background-color: white;
  padding: 2rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(24, 144, 255, 0.2);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.advantage-item:hover {
  transform: translateX(10px);
  border-color: rgba(24, 144, 255, 0.4);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.advantage-number {
  font-size: 3rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  flex-shrink: 0;
  line-height: 1;
}

.advantage-content {
  flex: 1;
}

.advantage-content h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

.advantage-content p {
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 0;
}

/* 技术架构 */
.architecture {
  background-color: var(--bg-color);
  padding: 4rem 0;
}

.architecture h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.architecture-diagram {
  margin-top: 3rem;
}

.arch-layer {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.arch-item {
  background: linear-gradient(135deg, rgba(24, 144, 255, 0.1), rgba(114, 46, 209, 0.1));
  padding: 2rem;
  border-radius: var(--border-radius);
  text-align: center;
  border: 2px solid transparent;
  transition: var(--transition);
}

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

.arch-item i {
  font-size: 3rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 1rem;
}

.arch-item svg {
  width: 3rem;
  height: 3rem;
  margin-bottom: 1rem;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.arch-item svg path {
  fill: var(--primary-color);
}

.arch-item h4 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

.arch-item p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* 应用场景 */
.scenarios {
  background-color: var(--bg-light);
  padding: 4rem 0;
}

.scenarios h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
}

.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.scenario-card {
  background-color: white;
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  text-align: center;
  transition: var(--transition);
}

.scenario-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.scenario-card i {
  font-size: 2.5rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 1rem;
}

.scenario-card svg {
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: 1rem;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.scenario-card svg path {
  fill: var(--primary-color);
}

.scenario-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--text-color);
}

.scenario-card p {
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 0;
}

/* 行动号召 */
.cta-section {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 4rem 0;
  text-align: center;
}

.cta-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.cta-section h2 {
  margin-bottom: 1rem;
  color: white;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
  font-size: 1.125rem;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-buttons .btn.primary {
  background: white;
  color: var(--primary-color);
}

.cta-buttons .btn.primary:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-2px);
}

.cta-buttons .btn.secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.cta-buttons .btn.secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* 导航链接激活状态 */
.nav-link.active {
  color: var(--primary-color);
}

.nav-link.active::after {
  width: 100%;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .product-hero {
    padding: 4rem 0 3rem;
  }

  .product-hero h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .features h2,
  .advantages h2,
  .architecture h2,
  .scenarios h2,
  .product-showcase h2 {
    font-size: 2rem;
  }

  .showcase-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .showcase-item h3 {
    font-size: 1.25rem;
    margin: 1.25rem 1.25rem 0.5rem;
  }

  .showcase-item p {
    margin: 0 1.25rem 1.25rem;
    font-size: 0.95rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .feature-card {
    padding: 2rem;
  }

  .feature-detail li {
    padding: 0.625rem 0;
    padding-left: 1.25rem;
    font-size: 0.9rem;
  }

  .advantage-item {
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
  }

  .advantage-number {
    font-size: 2rem;
  }

  .arch-layer {
    grid-template-columns: 1fr;
  }

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

  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
  }

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

/* 联系弹窗样式 */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.3s ease;
}

.modal.show {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background-color: white;
  margin: auto;
  padding: 2.5rem;
  border-radius: var(--border-radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  max-width: 500px;
  width: 90%;
  position: relative;
  animation: slideDown 0.3s ease;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 2rem;
  font-weight: bold;
  color: var(--text-light);
  cursor: pointer;
  line-height: 1;
  transition: var(--transition);
}

.modal-close:hover {
  color: var(--text-color);
  transform: scale(1.1);
}

.modal-content h3 {
  margin-bottom: 1.5rem;
  color: var(--text-color);
  font-size: 1.75rem;
}

.modal-content p {
  font-size: 1.125rem;
  color: var(--text-light);
  margin-bottom: 0;
  line-height: 1.8;
}

.modal-content a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.modal-content a:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideDown {
  from {
    transform: translateY(-50px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}