/* Shared CSS for global styles */
:root {
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --text-color: #333;
  --background-color: #f8f9fa;
  --white: #fff;
  --border-color: #dee2e6;
  --font-family: 'Helvetica Neue', Arial, sans-serif;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
}

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

/* Header Styles */
.site-header {
  background-color: var(--white);
  border-bottom: 1px solid var(--border-color);
  padding: 15px 0;
  box-shadow: 0 2px 4px rgba(0,0,0,.05);
}

.site-header .header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

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

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

.site-header .main-nav ul li {
  margin-left: 25px;
  position: relative;
}

.site-header .main-nav ul li a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  padding: 5px 0;
  display: block;
  transition: color 0.3s ease;
}

.site-header .main-nav ul li a:hover {
  color: var(--primary-color);
}

.site-header .main-nav .submenu {
  display: none;
  position: absolute;
  background-color: var(--white);
  box-shadow: 0 8px 16px rgba(0,0,0,0.1);
  z-index: 1000;
  min-width: 160px;
  padding: 10px 0;
  border-radius: 4px;
  left: 0;
  top: 100%;
}

.site-header .main-nav .has-submenu:hover .submenu {
  display: block;
}

.site-header .main-nav .submenu li {
  margin: 0;
}

.site-header .main-nav .submenu li a {
  padding: 8px 20px;
  white-space: nowrap;
}

.site-header .menu-toggle {
  display: none; /* Hidden on desktop */
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 24px;
  position: relative;
}

.site-header .menu-toggle .icon-bar {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--text-color);
  margin-bottom: 5px;
  transition: all 0.3s ease;
}

.site-header .header-actions .btn {
  margin-left: 10px;
  padding: 8px 15px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 500;
}

.site-header .header-actions .btn-primary {
  background-color: var(--primary-color);
  color: var(--white);
  border: 1px solid var(--primary-color);
}

.site-header .header-actions .btn-secondary {
  background-color: transparent;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

.site-header .header-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 10px;
  border-top: 1px solid var(--border-color);
}

.site-header .search-form {
  display: flex;
  flex-grow: 1;
  max-width: 400px;
  margin-right: 20px;
}

.site-header .search-form input[type="search"] {
  flex-grow: 1;
  padding: 8px 15px;
  border: 1px solid var(--border-color);
  border-radius: 5px 0 0 5px;
  outline: none;
}

.site-header .search-form button {
  background-color: var(--primary-color);
  color: var(--white);
  border: 1px solid var(--primary-color);
  border-radius: 0 5px 5px 0;
  padding: 8px 12px;
  cursor: pointer;
}

.site-header .search-form button i {
  font-size: 1.1em;
}

.site-header .language-selector select {
  padding: 8px 15px;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  background-color: var(--white);
  cursor: pointer;
}

/* Footer Styles */
.site-footer {
  background-color: #212529;
  color: #adb5bd;
  padding: 40px 0;
  font-size: 0.9em;
}

.site-footer .footer-main {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  margin-bottom: 30px;
}

.site-footer .footer-section {
  flex: 1;
  min-width: 200px;
  margin-right: 20px;
  margin-bottom: 20px;
}

.site-footer .footer-section:last-child {
  margin-right: 0;
}

.site-footer h3 {
  color: var(--white);
  font-size: 1.2em;
  margin-bottom: 15px;
}

.site-footer p {
  margin-bottom: 10px;
}

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

.site-footer ul li {
  margin-bottom: 8px;
}

.site-footer ul li a {
  color: #adb5bd;
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.site-footer .social-links a {
  color: var(--white);
  font-size: 1.5em;
  margin-right: 15px;
  transition: color 0.3s ease;
}

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

.site-footer .footer-bottom {
  border-top: 1px solid #343a40;
  padding-top: 20px;
  text-align: center;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-footer .legal-links {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer .legal-links li {
  margin-left: 20px;
}

.site-footer .legal-links li a {
  color: #adb5bd;
  text-decoration: none;
}

/* Responsive adjustments */
@media (max-width: 992px) {
  .site-header .main-nav ul {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    border-top: 1px solid var(--border-color);
    padding: 10px 0;
  }

  .site-header .main-nav ul.active {
    display: flex;
  }

  .site-header .main-nav ul li {
    margin: 0;
    border-bottom: 1px solid var(--border-color);
  }

  .site-header .main-nav ul li:last-child {
    border-bottom: none;
  }

  .site-header .main-nav ul li a {
    padding: 12px 20px;
  }

  .site-header .main-nav .submenu {
    position: static;
    box-shadow: none;
    border-radius: 0;
    padding-left: 20px;
    background-color: #f0f0f0;
  }

  .site-header .menu-toggle {
    display: block;
  }

  .site-header .header-top {
    flex-wrap: wrap;
  }

  .site-header .header-actions {
    order: 3;
    width: 100%;
    margin-top: 15px;
    text-align: center;
  }

  .site-header .header-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-header .search-form {
    width: 100%;
    max-width: none;
    margin-right: 0;
    margin-bottom: 15px;
  }

  .site-footer .footer-main {
    flex-direction: column;
  }

  .site-footer .footer-section {
    margin-right: 0;
    min-width: unset;
  }

  .site-footer .footer-bottom {
    flex-direction: column;
  }

  .site-footer .legal-links {
    margin-top: 15px;
    flex-direction: column;
    align-items: center;
  }

  .site-footer .legal-links li {
    margin: 5px 0;
  }
}

/* SR-only class for accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
/* 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;
  }
}