/* Shared CSS for Header and Footer */
:root {
  --primary-color: #2F6BFF;
  --accent-color: #6FA3FF;
  --text-main-color: #1F2D3D;
  --text-black-color: #000000;
  --card-bg-color: #FFFFFF;
  --background-color: #F4F7FB;
  --border-color: #D6E2FF;
  --glow-color: #A5C4FF;
  --header-offset: 122px; /* Desktop: 68px (header-top) + 52px (main-nav) + 2px buffer */
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-main-color);
  background-color: var(--background-color);
  padding-top: var(--header-offset);
  overflow-x: hidden; /* Prevent horizontal scroll on desktop too */
}

/* Site Header - Fixed Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  box-sizing: border-box;
}

.header-top {
  background-color: #1A2B4C; /* Darker background for header-top */
  min-height: 68px;
  height: 68px;
  display: flex;
  align-items: center;
  overflow: hidden;
  box-sizing: border-box;
  padding: 0 20px; /* Default padding for desktop */
}

.header-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  box-sizing: border-box;
}

.logo {
  color: #FFFFFF;
  font-size: 28px;
  font-weight: bold;
  text-decoration: none;
  display: block;
  line-height: 1;
}

.logo img {
  display: block;
  max-height: 60px;
  height: auto;
  width: auto;
  max-width: 280px;
  object-fit: contain;
}

.desktop-nav-buttons {
  display: flex;
  gap: 12px;
  align-items: center;
}

.mobile-nav-buttons {
  box-sizing: border-box;
  display: none; /* Hidden by default on desktop */
  min-height: 48px;
  background-color: var(--background-color); /* Lighter background for mobile buttons */
  padding: 0 20px; /* Default padding for desktop, will be overwritten for mobile */
}

.main-nav {
  background-color: var(--primary-color); /* Primary color for main-nav */
  min-height: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  overflow: hidden;
  box-sizing: border-box;
  width: 100%;
}

.nav-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  height: 100%;
  box-sizing: border-box;
  padding: 0 20px;
}

.nav-link {
  color: #FFFFFF;
  text-decoration: none;
  padding: 10px 15px;
  font-size: 16px;
  font-weight: bold;
  white-space: nowrap;
  transition: background-color 0.3s ease;
}

.nav-link:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border-radius: 25px;
  text-decoration: none;
  font-weight: bold;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.3s ease;
  box-sizing: border-box;
}

.btn-primary {
  background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
  color: #FFFFFF;
  border: none;
}

.btn-primary:hover {
  background: linear-gradient(180deg, #2F6BFF 0%, #4A8BFF 100%);
  box-shadow: 0 4px 12px var(--glow-color);
}

.btn-secondary {
  background: var(--accent-color);
  color: #FFFFFF;
  border: none;
}

.btn-secondary:hover {
  background: var(--primary-color);
  box-shadow: 0 4px 12px var(--glow-color);
}

/* Hamburger Menu (Mobile) */
.hamburger-menu {
  display: none; /* Hidden by default on desktop */
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  position: relative;
  z-index: 1001;
}

.hamburger-menu .bar {
  display: block;
  width: 25px;
  height: 3px;
  background-color: #FFFFFF;
  margin: 5px 0;
  transition: all 0.3s ease;
}

/* Overlay for mobile menu */
.overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 999;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.overlay.active {
  display: block;
  opacity: 1;
}

/* Site Footer */
.site-footer {
  background-color: #1A2B4C; /* Dark background for footer */
  color: #E0E0E0;
  padding: 40px 20px;
  font-size: 14px;
  box-sizing: border-box;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto 40px auto;
}

.footer-col h3 {
  color: #FFFFFF;
  font-size: 18px;
  margin-bottom: 15px;
}

.footer-col p {
  line-height: 1.8;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.footer-logo {
  color: #FFFFFF;
  font-size: 28px;
  font-weight: bold;
  text-decoration: none;
  display: block;
  margin-bottom: 15px;
}

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

.footer-nav li a {
  color: #E0E0E0;
  text-decoration: none;
  display: block;
  padding: 5px 0;
  transition: color 0.3s ease;
}

.footer-nav li a:hover {
  color: var(--accent-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  max-width: 1200px;
  margin: 0 auto;
}

.footer-bottom p {
  margin: 0;
  color: #B0B0B0;
}

.footer-slot-anchor-inner {
  /* Ensure visibility for injected content */
  min-height: 1px; 
  min-width: 1px;
}

/* Mobile Styles */
@media (max-width: 768px) {
  :root {
    --header-offset: 110px; /* Mobile: 60px (header-top) + 48px (mobile-nav-buttons) + 2px buffer */
  }

  body {
    overflow-x: hidden;
  }

  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }

  .site-header {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  }

  .header-top {
    min-height: 60px !important;
    height: 60px !important;
    padding: 0 15px; /* Adjust padding for mobile */
  }

  .header-container {
    padding: 0;
    width: 100%;
    max-width: none;
    position: relative; /* For logo centering */
  }

  .hamburger-menu {
    display: block;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    color: #FFFFFF;
  }

  .hamburger-menu.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .hamburger-menu.active .bar:nth-child(2) {
    opacity: 0;
  }

  .hamburger-menu.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .logo {
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    margin: 0; /* Reset any default margin */
    padding: 0; /* Reset any default padding */
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 100px); /* Adjust width to make space for hamburger */
  }

  .logo img {
    max-height: 56px !important;
  }

  .desktop-nav-buttons {
    display: none !important;
  }

  .mobile-nav-buttons {
    display: flex !important;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
  }

  .mobile-nav-buttons .btn {
    flex: 1;
    min-width: 0;
    max-width: calc(50% - 5px);
    box-sizing: border-box;
    padding: 8px 12px;
    font-size: 13px;
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
    border-radius: 20px;
  }

  .main-nav {
    position: fixed;
    top: calc(var(--header-offset) - 48px); /* Adjust based on new header offset. Main nav is 48px high. */
    left: 0;
    width: 280px;
    height: calc(100vh - var(--header-offset) + 48px); /* Full height below fixed header */
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 20px 0;
    background-color: var(--primary-color);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    overflow-y: auto;
    display: none; /* Hidden by default, toggled by JS */
  }

  .main-nav.active {
    transform: translateX(0);
    display: flex; /* Show when active */
  }

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 0;
    width: 100%;
    max-width: none;
  }

  .nav-link {
    width: 100%;
    padding: 12px 20px;
    box-sizing: border-box;
    text-align: left;
    font-size: 15px;
  }

  .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.15);
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
  }

  .site-footer {
    padding: 30px 15px;
  }

  .footer-bottom {
    padding-top: 15px;
  }
}
/* 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;
  }
}
/* 内容保护（系统追加，请勿删除） */
body {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
input, textarea, select, [contenteditable="true"] {
  -webkit-user-select: text;
  -moz-user-select: text;
  user-select: text;
}