body {
  font-family: "Noto Sans SC", "Roboto", sans-serif;
  margin: 0;
  background: #f9f9f9;
  color: #333;
}

/* 顶部导航 */
.navbar {
  background: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 60px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.logo {
  display: flex;
  align-items: center;
  gap: 15px;
}

.logo img {
  height: 55px;
}

.logo h1 {
  font-size: 22px;
  color: #007ACC;
  margin: 0;
}

.logo h1 span {
  display: block;
  font-size: 14px;
  color: #5BB75B;
}

.menu {
  list-style: none;
  margin: 0;
  padding: 0;
}

.menu li {
  display: inline-block;
  margin: 0 15px;
}

.menu a {
  text-decoration: none;
  color: #007ACC;
  font-weight: 500;
  transition: color 0.3s;
}

.menu a:hover {
  color: #5BB75B;
}

/* 首屏 */
.hero {
  display: flex;
  align-items: center;
  justify-content: space-around;
  background: linear-gradient(to right, #e0f7fa, #ffffff);
  padding: 60px 40px;
  flex-wrap: wrap;
}

.hero-text {
  max-width: 480px;
}

.hero-text h2 {
  font-size: 36px;
  color: #007ACC;
}

.hero-text p {
  font-size: 18px;
  margin-top: 15px;
  color: #555;
}

.btn {
  background-color: #007ACC;
  color: white;
  padding: 10px 25px;
  border-radius: 25px;
  text-decoration: none;
  display: inline-block;
  margin-top: 20px;
  transition: background-color 0.3s;
}

.btn:hover {
  background-color: #5BB75B;
}

.hero-img img {
  width: 420px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

/* 核心业务 */
.services {
  text-align: center;
  padding: 60px 20px;
  background: white;
}

.services h3 {
  font-size: 28px;
  color: #007ACC;
  margin-bottom: 30px;
}

.cards {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 30px;
}

.card {
  background: #f3f9f9;
  padding: 25px;
  border-radius: 10px;
  width: 260px;
  box-shadow: 0 3px 6px rgba(0,0,0,0.05);
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 6px 12px rgba(0,0,0,0.1);
}

.card h4 {
  color: #007ACC;
  margin-bottom: 10px;
}

/* 页脚 */
.footer {
  text-align: center;
  background: #007ACC;
  color: white;
  padding: 40px 10px;
}

.footer img {
  border-radius: 10px;
  margin-bottom: 10px;
}

.footer p {
  margin: 6px 0;
  font-size: 14px;
}