/* Global Styles */
:root {
  --primary-color: #0a0a3a;
  --secondary-color: #1e90ff;
  --accent-color: #3498db;
  --text-color: #333;
  --light-text: #fff;
  --background-color: #fff;
  --section-padding: 60px 0;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.btn {
  display: inline-block;
  padding: 10px 25px;
  background-color: var(--secondary-color);
  color: var(--light-text);
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: var(--transition);
}

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

/* Navigation Bar Styles */
header {
  background-color: var(--primary-color);
  color: var(--light-text);
  padding: 15px 0;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

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

.logo {
  font-size: 24px;
  font-weight: bold;
}

.nav-links {
  display: flex;
}

.nav-links li {
  margin-left: 30px;
}

.nav-links a {
  transition: var(--transition);
}

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

/* Hero Section Styles */
.hero {
  background-color: var(--primary-color);
  color: var(--light-text);
  padding: 150px 0 100px;
  background-image: url('images/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  background-blend-mode: overlay;
  position: relative;
}

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

.hero-content h1 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 30px;
}

/* Services Section Styles */
.services {
  padding: var(--section-padding);
  background-color: #f9f9f9;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2rem;
  margin-bottom: 15px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.service-card {
  background-color: var(--background-color);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.service-img {
  height: 200px;
  overflow: hidden;
}

.service-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.service-card:hover .service-img img {
  transform: scale(1.05);
}

.service-content {
  padding: 20px;
}

.service-content h3 {
  margin-bottom: 10px;
}

.service-content p {
  margin-bottom: 15px;
  color: #666;
}

/* Steps Section Styles */
.steps {
  padding: var(--section-padding);
}

.steps-container {
  max-width: 800px;
  margin: 0 auto;
}

.step-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 30px;
  position: relative;
}

.step-number {
  background-color: var(--secondary-color);
  color: var(--light-text);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  margin-right: 20px;
  flex-shrink: 0;
}

.step-content {
  background-color: #f9f9f9;
  padding: 20px;
  border-radius: 8px;
  flex-grow: 1;
}

.step-content h3 {
  margin-bottom: 10px;
}

/* About Us Section Styles */
.about {
  padding: var(--section-padding);
  background-color: #f9f9f9;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.about-text h2 {
  margin-bottom: 20px;
}

.about-text p {
  margin-bottom: 15px;
}

.about-img img {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* CTA Section Styles */
.cta {
  padding: var(--section-padding);
  background-color: var(--primary-color);
  color: var(--light-text);
  text-align: center;
}

.cta h2 {
  margin-bottom: 20px;
}

.cta p {
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* 页脚样式 */
footer {
  background-color: #222;
  color: var(--light-text);
  padding: 50px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer-column h3 {
  margin-bottom: 20px;
  font-size: 1.2rem;
}

.footer-column ul li {
  margin-bottom: 10px;
}

.footer-column ul li a {
  transition: var(--transition);
}

.footer-column ul li a:hover {
  color: var(--secondary-color);
  padding-left: 5px;
}

.copyright {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2rem;
  }
  
  .about-content {
    grid-template-columns: 1fr;
  }
  
  .about-img {
    order: -1;
  }
  
  .nav-links {
    display: none;
  }
}

@media (max-width: 576px) {
  .hero-content h1 {
    font-size: 1.8rem;
  }
  
  .section-title h2 {
    font-size: 1.5rem;
  }
  
  .service-card {
    margin-bottom: 20px;
  }
}