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

body {
  font-family: "Segoe UI", Roboto, system-ui, -apple-system, sans-serif;
  color: #333;
  line-height: 1.6;
  background-color: #fff;
}

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

.site-header {
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  padding: 0.8rem 0;
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.site-header .logo img {
  height: 42px;
  width: auto;
}
.site-header .nav ul {
  list-style: none;
  display: flex;
  gap: 2.5rem;
}
.site-header .nav ul li a {
  text-decoration: none;
  color: #0a2540;
  font-weight: 500;
  padding: 0.5rem 0;
  border-bottom: 3px solid transparent;
  transition: 0.2s;
}
.site-header .nav ul li a i {
  margin-right: 6px;
  font-size: 1.1rem;
}
.site-header .nav ul li a:hover, .site-header .nav ul li a.active {
  border-bottom-color: #f59e0b;
  color: rgb(3.1081081081, 11.5, 19.8918918919);
}

.site-footer {
  background: #0a2540;
  color: #fff;
  padding: 2rem 0;
  margin-top: 3rem;
  text-align: center;
}
.site-footer a {
  color: #fff;
  text-decoration: none;
}
.site-footer a:hover {
  text-decoration: underline;
}
.site-footer .beian {
  margin-top: 0.8rem;
  font-size: 0.9rem;
  opacity: 0.9;
}

.hero {
  background: linear-gradient(135deg, #0a2540 0%, rgb(20.3378378378, 75.25, 130.1621621622) 100%);
  color: #fff;
  padding: 5rem 0;
  text-align: center;
}
.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
}
.hero .hero-subtitle {
  font-size: 1.3rem;
  opacity: 0.9;
  max-width: 700px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: 2.2rem;
  margin: 2.5rem 0 2rem;
  color: #0a2540;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.card {
  background: #fff;
  border-radius: 12px;
  padding: 2rem 1.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}
.card i {
  color: #f59e0b;
  margin-bottom: 1rem;
}
.card h3 {
  font-size: 1.5rem;
  margin-bottom: 0.8rem;
  color: #0a2540;
}
.card p {
  color: #6c757d;
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.intro {
  background: #f8f9fa;
  padding: 3rem 0;
}
.intro .intro-text {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}
.intro .intro-text h2 {
  color: #0a2540;
  font-size: 2rem;
  margin-bottom: 1rem;
}
.intro .intro-text p {
  font-size: 1.1rem;
  margin: 1rem 0;
}
.intro .intro-text p i {
  color: #f59e0b;
  margin-right: 0.3rem;
}

.page-about {
  padding: 2rem 0;
}

.page-title {
  font-size: 2.5rem;
  color: #0a2540;
  text-align: center;
  margin: 2rem 0 3rem;
  position: relative;
}
.page-title:after {
  content: "";
  display: block;
  width: 80px;
  height: 4px;
  background: #f59e0b;
  margin: 1rem auto 0;
  border-radius: 2px;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.about-item {
  background: #f8f9fa;
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
}
.about-item i {
  color: #f59e0b;
  margin-bottom: 1rem;
}
.about-item h2 {
  font-size: 1.5rem;
  color: #0a2540;
  margin-bottom: 1rem;
}
.about-item p {
  color: #6c757d;
  text-align: left;
}

.page-contact {
  padding: 2rem 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin: 2rem 0;
}
@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-info h2 {
  color: #0a2540;
  font-size: 1.5rem;
  margin: 1.5rem 0 0.5rem;
}
.contact-info h2 i {
  color: #f59e0b;
  margin-right: 0.5rem;
  width: 1.5rem;
}
.contact-info h2:first-of-type {
  margin-top: 0;
}
.contact-info p {
  font-size: 1.1rem;
  color: #6c757d;
  padding-left: 2rem;
}

.contact-form {
  background: #f8f9fa;
  padding: 2rem;
  border-radius: 12px;
}
.contact-form h2 {
  color: #0a2540;
  margin-bottom: 1.5rem;
  font-size: 1.8rem;
}
.contact-form .form-group {
  margin-bottom: 1.2rem;
}
.contact-form .form-group input, .contact-form .form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  transition: border 0.2s;
}
.contact-form .form-group input:focus, .contact-form .form-group textarea:focus {
  outline: none;
  border-color: #f59e0b;
}
.contact-form .btn {
  background: #0a2540;
  color: #fff;
  border: none;
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
}
.contact-form .btn i {
  margin-left: 0.5rem;
}
.contact-form .btn:hover {
  background: rgb(16.8918918919, 62.5, 108.1081081081);
}