/* 全局样式 */
:root {
  --primary-color: #1e3a8a;
  --secondary-color: #0ea5e9;
  --accent-color: #f59e0b;
  --text-color: #334155;
  --light-text: #64748b;
  --background-color: #f8fafc;
  --card-bg: #ffffff;
  --border-color: #e2e8f0;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  color: var(--text-color);
  background-color: var(--background-color);
}

/* 导航栏 */
header {
  background-color: var(--card-bg);
  box-shadow: var(--shadow);
  padding: 0.8rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.company-name {
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--primary-color);
}

nav ul {
  display: flex;
  list-style: none;
}

nav li {
  margin-left: 1.5rem;
}

nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: color 0.3s;
}

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

/* 主要内容区 */
main {
  min-height: 80vh;
}

.hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  text-align: center;
  padding: 2.5rem 1rem;
}

.hero h1 {
  font-size: 2.2rem;
  margin-bottom: 0.8rem;
}

.hero p {
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto;
}

.section {
  padding: 2.5rem 0;
}

.section h2 {
  text-align: center;
  font-size: 1.8rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  position: relative;
}

.section h2::after {
  content: "";
  display: block;
  width: 50px;
  height: 3px;
  background-color: var(--accent-color);
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
}

.content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* 关于我们区域 */
#about p {
  margin-bottom: 1rem;
  text-align: justify;
}

/* 职位区域 */
.position-category {
  margin-bottom: 1.8rem;
  background-color: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.position-category h3 {
  background-color: var(--primary-color);
  color: white;
  padding: 0.8rem 1.2rem;
  font-size: 1.2rem;
}

.position-detail {
  padding: 1.2rem;
}

.position-detail h4 {
  font-size: 1.1rem;
  color: var(--secondary-color);
  margin: 1.2rem 0 0.6rem;
}

.position-detail h4:first-child {
  margin-top: 0;
}

.position-detail p {
  margin: 0.6rem 0;
  font-weight: 500;
}

.position-detail ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.position-detail li {
  margin-bottom: 0.3rem;
}

/* 行业洞察区域 */
.insight {
  background-color: var(--card-bg);
  border-radius: 8px;
  padding: 1.2rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
}

.insight h3 {
  color: var(--primary-color);
  margin-bottom: 0.8rem;
  font-size: 1.2rem;
}

.insight p {
  margin-bottom: 0.8rem;
}

.insight ul {
  padding-left: 1.5rem;
}

.insight li {
  margin-bottom: 0.3rem;
}

/* 联系我们区域 */
#contact {
  background-color: var(--primary-color);
  color: white;
  text-align: center;
}

#contact h2::after {
  background-color: white;
}

#contact .content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact-button {
  margin-top: 1.5rem;
}

.email-button {
  display: inline-block;
  background-color: var(--accent-color);
  color: white;
  padding: 0.7rem 1.3rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s, transform 0.3s;
}

.email-button:hover {
  background-color: #e67e22;
  transform: translateY(-2px);
}

/* 页脚 */
footer {
  background-color: #1a365d;
  color: white;
  padding: 1.5rem 0;
  text-align: center;
}

.footer-content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
  }
  
  nav ul {
    margin-top: 0.8rem;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  nav li {
    margin: 0.4rem 0.8rem;
  }
  
  .hero h1 {
    font-size: 1.8rem;
  }
  
  .section h2 {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.6rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .section {
    padding: 2rem 0;
  }
  
  .position-detail {
    padding: 0.8rem;
  }
}