/* 长治市博宇科技有限公司 - 现代简约风格 */

:root {
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary-color: #06b6d4;
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --bg-light: #f9fafb;
  --white: #ffffff;
  --border-color: #e5e7eb;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--white);
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

ul {
  list-style: none;
}

/* 导航栏 */
.navbar {
  background: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.logo span {
  color: var(--text-dark);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-dark);
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-color);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: 0.3s;
}

/* Hero 区域 */
.hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: var(--white);
  padding: 8rem 2rem 4rem;
  text-align: center;
}

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

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  animation: fadeInUp 0.8s ease;
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.95;
  margin-bottom: 2rem;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-btn {
  display: inline-block;
  background: var(--white);
  color: var(--primary-color);
  padding: 1rem 2.5rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* 通用区块样式 */
.section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 2.5rem;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.section-title p {
  color: var(--text-light);
  font-size: 1.1rem;
}

/* 关于我们 */
.about {
  background: var(--bg-light);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  align-items: center;
}

.about-content h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.about-content p {
  color: var(--text-light);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.stat-item {
  text-align: center;
  padding: 1.5rem;
  background: var(--white);
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  display: block;
}

.stat-label {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* 产品服务 */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: 15px;
  padding: 2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.product-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.8rem;
}

.product-card h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.product-card p {
  color: var(--text-light);
  line-height: 1.7;
}

.product-features {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.product-features li {
  color: var(--text-light);
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.product-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: 700;
}

/* 客户列表卡片标题 */
.product-card h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

/* 联系我们 */
.contact {
  background: var(--bg-light);
}

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

.contact-info h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-item p {
  color: var(--text-light);
  line-height: 1.6;
}

.contact-form {
  background: var(--white);
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.submit-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
  padding: 1rem;
  border: none;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
}

/* 页脚 */
.footer {
  background: var(--text-dark);
  color: var(--white);
  padding: 3rem 2rem 1.5rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h4 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--white);
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
}

.footer-section a:hover {
  color: var(--white);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
}

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

/* 响应式设计 */
@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 1rem 2rem;
    gap: 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: none;
  }

  .nav-links.active {
    display: flex;
  }

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

  .hero p {
    font-size: 1.1rem;
  }

  .section-title h2 {
    font-size: 2rem;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }
}

/* 页面头部 */
.page-header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: var(--white);
  padding: 6rem 2rem 3rem;
  text-align: center;
  margin-top: 60px;
}

.page-header h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.page-header p {
  font-size: 1.1rem;
  opacity: 0.95;
}