/* Design-based Styles */
:root {
  --primary-blue: #1b3d6d;
  --secondary-blue: #0a1f3d;
  --accent-gold: #c5a059;
  --text-dark: #1a1a1a;
  --text-gray: #4a5568;
  --bg-light: #ffffff;
  --bg-offset: #f7f9fc;
  --white: #ffffff;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --transition: all 0.3s ease;
}

* {
  box-sizing: border-box;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", -apple-system, blinkmacsystemfont, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-light);
  margin: 0;
  padding: 0;
}

/* Header & Nav */
header {
  background-color: var(--white);
  padding: 15px 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  text-align: left;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
}

header h1 {
  font-size: 1.2rem;
  color: var(--primary-blue);
  margin: 0;
  letter-spacing: 0;
}

nav ul {
  display: flex;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
}

nav ul li a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
}

nav ul li a:hover {
  color: var(--primary-blue);
}

.consult-btn {
  background-color: var(--accent-gold);
  color: white;
  padding: 10px 24px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.consult-btn:hover {
  background-color: #b08a4a;
  transform: translateY(-2px);
}

/* Language Switching - Simplified and Corrected */
/* No longer need active state switching as pages are split */
.lang-zh, .lang-en {
  display: block;
}
span.lang-zh, span.lang-en,
a.lang-zh, a.lang-en {
  display: inline-block;
}

/* Language Switch Button Style */
.lang-switch button {
  background: var(--primary-blue);
  color: white;
  border: none;
  padding: 5px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: var(--transition);
}

.lang-switch button:hover {
  background: var(--accent-gold);
}

/* Hero Section */
.hero {
  height: 500px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-align: center;
  overflow: hidden;
}

#heroCarousel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 10;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: 40px 60px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 4px;
  max-width: 800px;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 25px;
  color: white;
  border: none;
}

.hero-btn {
  background-color: var(--accent-gold);
  color: white;
  padding: 12px 40px;
  border-radius: 4px;
  text-decoration: none;
  font-size: 1.1rem;
  transition: var(--transition);
}

/* Sections */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px;
}

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

.section-title h2 {
  font-size: 2rem;
  color: var(--secondary-blue);
  position: relative;
  border-bottom: none;
}

.section-title h2::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: var(--accent-gold);
  margin: 15px auto;
}

/* Service Grid */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.service-card {
  background: white;
  padding: 40px;
  border-radius: 8px;
  text-align: center;
  border: 1px solid #eee;
  transition: var(--transition);
}

.service-card:hover {
  border-color: var(--accent-gold);
  transform: translateY(-10px);
  box-shadow: var(--shadow);
}

.service-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  color: var(--accent-gold);
}

.service-card h3 {
  color: var(--primary-blue);
  font-size: 1.4rem;
  margin-bottom: 15px;
}

/* Package Section */
.packages {
  background-color: var(--bg-offset);
  padding: 80px 5%;
}

.package-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 40px;
  max-width: 1000px;
  margin: 0 auto;
}

.package-card {
  background: white;
  padding: 50px 40px;
  border-radius: 12px;
  text-align: center;
  position: relative;
  transition: var(--transition);
}

.package-card.featured {
  border: 2px solid var(--primary-blue);
}

.price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin: 20px 0;
}

.package-card ul {
  text-align: left;
  margin: 30px 0;
}

.package-card li {
  margin-bottom: 15px;
  color: var(--text-gray);
}

/* Office Section */
.offices {
  padding: 80px 0;
}

.office-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.office-card {
  padding: 0;
  overflow: hidden;
  border: 1px solid #edf2f7;
  border-radius: 8px;
}

.office-info {
  padding: 20px;
}

.office-info h4 {
  margin: 0 0 10px;
  color: var(--primary-blue);
}

.office-info p {
  font-size: 0.85rem;
  margin: 0;
}

.map-placeholder {
  height: 150px;
  background: #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #718096;
}

/* Contact Container Section */
.contact-container {
  margin-top: 50px;
}

.contact-form {
  background: var(--bg-offset);
  padding: 40px;
  border-radius: 8px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
}

.submit-btn {
  background: var(--primary-blue);
  color: white;
  border: none;
  padding: 12px 30px;
  border-radius: 4px;
  cursor: pointer;
  width: 100%;
  font-weight: 600;
}

/* Footer */
footer {
  background-color: var(--secondary-blue);
  color: #ffffff;
  padding: 60px 5% 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h4 {
  color: var(--accent-gold);
  margin-bottom: 20px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  font-size: 0.8rem;
}

/* Beian Styles */
.beian-container {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 15px;
  color: rgba(255, 255, 255, 0.5);
}

.beian-link {
  display: flex;
  align-items: center;
  color: rgba(255, 255, 255, 0.6) !important;
  text-decoration: none;
  transition: var(--transition);
  font-size: 13px;
}

.beian-link:hover {
  color: var(--accent-gold) !important;
}

.beian-icon {
  width: 16px;
  height: 16px;
  margin-right: 6px;
  filter: grayscale(1) brightness(2);
  opacity: 0.8;
  vertical-align: middle;
}

.beian-link:hover .beian-icon {
  filter: none;
  opacity: 1;
}

.beian-sep {
  color: rgba(255, 255, 255, 0.2);
  font-size: 12px;
}

/* Responsive */
@media (max-width: 850px) {
  header {
    flex-direction: column;
    gap: 20px;
  }
  nav ul {
    gap: 15px;
  }
  .contact-container {
    grid-template-columns: 1fr;
  }
  .hero h2 {
    font-size: 1.8rem;
  }
}