/* Shared CSS for global styles */
:root {
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --text-color: #333;
  --bg-color: #fff;
  --header-height: 70px;
  --footer-height: auto;
}

body {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  margin: 0;
  padding: 0;
  background-color: #f8f9fa;
}

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

/* Header Styles */
.site-header {
  background-color: var(--bg-color);
  box-shadow: 0 2px 4px rgba(0,0,0,.1);
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.site-logo img {
  height: 40px;
  width: auto;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
}

.main-nav li {
  margin-left: 25px;
}

.main-nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  padding: 10px 0;
  display: block;
  transition: color 0.3s ease;
}

.main-nav a:hover, .main-nav a.active {
  color: var(--primary-color);
}

.dropdown {
  position: relative;
}

.dropdown-menu {
  display: none;
  position: absolute;
  background-color: var(--bg-color);
  box-shadow: 0 4px 8px rgba(0,0,0,.1);
  list-style: none;
  padding: 10px 0;
  margin: 0;
  min-width: 160px;
  z-index: 10;
  border-radius: 4px;
}

.dropdown:hover .dropdown-menu {
  display: block;
}

.dropdown-menu li a {
  padding: 8px 20px;
  white-space: nowrap;
}

.header-actions {
  display: flex;
  align-items: center;
}

.search-box {
  position: relative;
  margin-right: 15px;
}

.search-box input {
  border: 1px solid #ccc;
  padding: 8px 12px;
  border-radius: 20px;
  width: 180px;
  transition: width 0.3s ease;
}

.search-box input:focus {
  width: 220px;
  outline: none;
  border-color: var(--primary-color);
}

.search-box button {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--secondary-color);
}

.btn {
  padding: 8px 15px;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.3s ease;
}

.btn-primary {
  background-color: var(--primary-color);
  color: #fff;
  border: 1px solid var(--primary-color);
}

.btn-primary:hover {
  background-color: #0056b3;
  border-color: #0056b3;
}

.mobile-menu-toggle {
  display: none; /* Hidden on desktop */
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  position: relative;
  width: 30px;
  height: 20px;
  margin-left: 15px;
}

.mobile-menu-toggle span {
  display: block;
  height: 2px;
  background-color: var(--text-color);
  margin-bottom: 5px;
  transition: all 0.3s ease;
}

.mobile-nav {
  display: none;
}

/* Footer Styles */
.site-footer {
  background-color: #212529;
  color: #f8f9fa;
  padding: 50px 0;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.footer-logo img {
  height: 32px;
  width: auto;
  margin-bottom: 15px;
}

.footer-col h3 {
  color: #fff;
  font-size: 1.1rem;
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-col ul li a {
  color: #ced4da;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-col ul li a:hover {
  color: var(--primary-color);
}

.social-links a {
  color: #fff;
  font-size: 1.2rem;
  margin-right: 15px;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  border-top: 1px solid #343a40;
  padding-top: 25px;
  text-align: center;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.footer-bottom p {
  margin: 0;
  color: #ced4da;
}

.legal-links a {
  color: #ced4da;
  text-decoration: none;
  margin-left: 20px;
  transition: color 0.3s ease;
}

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

/* Responsive adjustments */
@media (max-width: 992px) {
  .main-nav, .search-box, .btn-primary {
    display: none;
  }
  .mobile-menu-toggle {
    display: block;
  }
  .mobile-nav.is-open {
    display: block;
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background-color: var(--bg-color);
    box-shadow: 0 4px 8px rgba(0,0,0,.1);
    padding-bottom: 15px;
  }
  .mobile-nav nav ul {
    flex-direction: column;
    align-items: center;
  }
  .mobile-nav nav ul li {
    margin: 10px 0;
  }
  .footer-bottom {
    flex-direction: column;
  }
  .legal-links {
    margin-top: 15px;
  }
  .legal-links a {
    margin: 0 10px;
  }
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .company-info {
    order: -1;
  }
  .social-links {
    margin-top: 20px;
  }
}

/* Icon placeholders (replace with actual icon font/SVG) */
.icon-search::before { content: '🔍'; }
.icon-facebook::before { content: '📘'; }
.icon-twitter::before { content: '🐦'; }
.icon-linkedin::before { content: '💼'; }
.icon-wechat::before { content: '💬'; }
/* 移动端内容区防溢出（系统追加，请勿删除） */
@media (max-width: 768px) {
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }
}