/* 全局样式 */
:root {
  --primary-color: #6c63ff;
  --secondary-color: #4a47a3;
  --accent-color: #00d9ff;
  --dark-color: #292841;
  --light-color: #f8f9fa;
  --transition-speed: 0.3s;
}

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

body {
  font-family: 'Noto Sans SC', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: var(--light-color);
  overflow-x: hidden;
}

/* 导航栏样式 */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: background-color 0.3s ease, padding 0.3s ease;
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar.scrolled {
  padding: 0.5rem 5%;
  background-color: rgba(255, 255, 255, 0.98);
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
  display: flex;
  align-items: center;
}

.logo img {
  height: 40px;
  margin-right: 10px;
}

.nav-links {
  display: flex;
  list-style: none;
}

.nav-links li {
  margin-left: 2rem;
}

.nav-links a {
  color: #333;
  text-decoration: none;
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-speed) ease;
}

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

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

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

.mobile-menu {
  display: none;
  cursor: pointer;
}

.mobile-menu .fas {
  font-size: 1.5rem;
}

.nav-links.active {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background-color: white;
  padding: 1rem;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.nav-links.active li {
  margin: 1rem 0;
}

/* 英雄区域样式 */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, var(--dark-color), var(--secondary-color));
  color: white;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?ixlib=rb-1.2.1&auto=format&fit=crop&w=1352&q=80') no-repeat center center/cover;
  opacity: 0.2;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: 0 2rem;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  animation: fadeInUp 1s ease;
}

.hero p {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  animation: fadeInUp 1s ease 0.2s both;
}

.cta-button {
  display: inline-block;
  padding: 0.8rem 2rem;
  background: var(--accent-color);
  color: white;
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  animation: fadeInUp 1s ease 0.4s both;
  border: none;
  cursor: pointer;
}

.cta-button:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* 自定义星星背景 */
.stars-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  overflow: hidden;
}

.star {
  position: absolute;
  background-color: white;
  border-radius: 50%;
  animation: twinkle 3s infinite ease-in-out;
}

@keyframes twinkle {
  0% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.2);
  }
  100% {
    opacity: 0.3;
    transform: scale(1);
  }
}

/* 关于我们部分 */
.about {
  padding: 6rem 5%;
  background-color: white;
  text-align: center;
}

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

.about h2 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  color: var(--dark-color);
  position: relative;
  display: inline-block;
}

.about h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background-color: var(--primary-color);
}

.about p {
  font-size: 1.2rem;
  color: #555;
  margin-bottom: 2rem;
}

/* 关于我们的特性 */
.about-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin-top: 3rem;
}

.feature {
  flex: 1;
  min-width: 250px;
  padding: 2rem;
  background-color: #f9f9f9;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.feature:hover {
  transform: translateY(-10px);
}

.feature i {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

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

.feature p {
  font-size: 1rem;
  margin-bottom: 0;
}

/* 服务部分 */
.services {
  padding: 6rem 5%;
  background-color: #f9f9f9;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.section-title {
  width: 100%;
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--dark-color);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background-color: var(--primary-color);
}

.service-card {
  background-color: white;
  border-radius: 10px;
  padding: 2rem;
  width: 300px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: center;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.service-icon {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

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

.service-card p {
  color: #666;
}

/* 联系我们部分 */
.contact {
  padding: 6rem 5%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  text-align: center;
}

.contact-content {
  max-width: 600px;
  margin: 0 auto;
}

.contact h2 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

.contact p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

.contact-info {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

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

.contact-item i {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.contact-button {
  display: inline-block;
  padding: 0.8rem 2rem;
  background: white;
  color: var(--primary-color);
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-button:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* 页脚 */
footer {
  background-color: var(--dark-color);
  color: white;
  padding: 0;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 4rem 5%;
  gap: 2rem;
}

.footer-logo h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.footer-logo p {
  color: #aaa;
}

.footer-links h4, .footer-social h4 {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  position: relative;
  display: inline-block;
}

.footer-links h4::after, .footer-social h4::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 30px;
  height: 2px;
  background-color: var(--accent-color);
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.8rem;
}

.footer-links a {
  color: #aaa;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--accent-color);
}

.social-icons {
  display: flex;
  gap: 1rem;
}

.social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: white;
  transition: background-color 0.3s ease;
}

.social-icons a:hover {
  background-color: var(--accent-color);
}

.footer-bottom {
  padding: 1.5rem 5%;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  margin-bottom: 0.5rem;
}

.footer-bottom a {
  color: var(--accent-color);
  text-decoration: none;
}

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

@keyframes float {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
  100% {
    transform: translateY(0px);
  }
}

/* 脉冲动画 */
@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(0, 217, 255, 0.7);
  }
  70% {
    box-shadow: 0 0 0 15px rgba(0, 217, 255, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(0, 217, 255, 0);
  }
}

.pulse {
  animation: pulse 1s;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero p {
    font-size: 1.2rem;
  }
  
  .nav-links {
    display: none;
  }
  
  .mobile-menu {
    display: block;
  }
  
  .about, .services, .contact {
    padding: 4rem 5%;
  }
  
  .about-features {
    flex-direction: column;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-links h4::after, .footer-social h4::after {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .social-icons {
    justify-content: center;
  }
}

/* 滚动动画类 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* 粒子背景 */
#particles-js {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 0;
}