:root { --header-offset: 122px; }
body { padding-top: var(--header-offset); overflow-x: hidden; }

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.header-top {
  box-sizing: border-box;
  min-height: 68px;
  height: 68px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: #017439; /* Primary color */
  color: #FFFFFF;
  padding: 0 20px;
}

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

.logo {
  font-size: 28px;
  font-weight: bold;
  color: #FFFF00; /* Register/Login font color for contrast */
  text-decoration: none;
  display: flex;
  align-items: center;
  white-space: nowrap;
}

.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;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease;
  white-space: nowrap;
  cursor: pointer;
  border: none;
}

.btn-register {
  background-color: #C30808; /* Register color */
  color: #FFFF00; /* Register/Login font color */
}

.btn-login {
  background-color: #C30808; /* Login color */
  color: #FFFF00; /* Register/Login font color */
}

.mobile-nav-buttons {
  box-sizing: border-box;
  display: none; /* Hidden by default on desktop */
  min-height: 48px;
  background-color: #017439; /* Same as header-top */
  padding: 0 15px;
}

.main-nav {
  box-sizing: border-box;
  min-height: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: #005f2e; /* Darker green, distinct from header-top */
  width: 100%;
}

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

.nav-link {
  color: #FFFFFF;
  text-decoration: none;
  padding: 15px 18px;
  display: block;
  white-space: nowrap;
  font-weight: 500;
  transition: background-color 0.3s ease;
}

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

.hamburger-menu {
  display: none; /* Hidden on desktop */
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  position: relative;
  z-index: 1002;
}

.hamburger-icon {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #FFFFFF;
  position: relative;
  transition: background-color 0.3s ease;
}

.hamburger-icon::before, .hamburger-icon::after {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background-color: #FFFFFF;
  position: absolute;
  left: 0;
  transition: transform 0.3s ease, top 0.3s ease;
}

.hamburger-icon::before { top: -8px; }
.hamburger-icon::after { top: 8px; }

.hamburger-menu.active .hamburger-icon {
  background-color: transparent;
}

.hamburger-menu.active .hamburger-icon::before {
  transform: rotate(45deg);
  top: 0;
}

.hamburger-menu.active .hamburger-icon::after {
  transform: rotate(-45deg);
  top: 0;
}

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0,0,0,0.5);
  z-index: 999;
  display: none; /* Hidden by default */
}

.overlay.active {
  display: block;
}

/* Footer Styles */
.site-footer {
  background-color: #017439; /* Primary color */
  color: #FFFFFF;
  padding: 40px 20px 20px;
  font-size: 14px;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto 30px;
}

.footer-col h4 {
  color: #FFFF00; /* Accent color for headings */
  margin-bottom: 15px;
  font-size: 16px;
}

.footer-logo {
  font-size: 24px;
  font-weight: bold;
  color: #FFFF00; /* Logo color for contrast */
  text-decoration: none;
  margin-bottom: 15px;
  display: block;
}

.footer-description {
  line-height: 1.6;
  margin-bottom: 15px;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

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

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

.footer-nav li a:hover {
  color: #FFFF00;
}

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

.footer-bottom a {
  display: none; /* Absolutely no links in footer-bottom */
}

.footer-slot-anchor-inner { /* For system injection, keep empty */ }

/* Mobile Styles */
@media (max-width: 768px) {
  :root { --header-offset: 110px; }

  .header-top {
    min-height: 60px;
    height: 60px;
    padding: 0 15px;
    justify-content: space-between;
  }

  .header-container {
    max-width: none;
    padding: 0;
    position: relative;
  }

  .logo {
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    margin: 0;
  }

  .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;
    background-color: #017439; /* Same as header-top */
  }

  .mobile-nav-buttons .btn {
    flex: 1;
    min-width: 0;
    max-width: calc(50% - 5px); /* Account for gap */
    box-sizing: border-box;
    padding: 8px 12px;
    font-size: 13px;
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
    text-align: center;
  }

  .main-nav {
    min-height: 48px;
    height: calc(100% - var(--header-offset)); /* Full height minus header */
    position: fixed;
    top: var(--header-offset); /* Position below header-top and mobile-nav-buttons */
    left: 0;
    width: 70%;
    max-width: 300px;
    background-color: #004c26; /* Slightly darker for sidebar */
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
    transform: translateX(-100%); /* Hidden off-screen */
    transition: transform 0.3s ease;
    z-index: 1001;
    display: none; /* Ensure it's hidden by default */
    overflow-y: auto;
  }

  .main-nav.active {
    transform: translateX(0); /* Slide in */
    display: flex; /* Make it visible */
  }

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

  .nav-link {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    text-align: left;
  }

  .nav-link:last-child {
    border-bottom: none;
  }

  .hamburger-menu {
    display: flex;
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1002;
    width: 30px;
    height: 30px;
    justify-content: center;
    align-items: center;
  }

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

  .footer-col {
    text-align: center;
  }

  .footer-col h4 {
    margin-top: 20px;
  }

  .footer-nav ul {
    text-align: center;
  }
  
  .footer-nav li a {
    padding: 5px 0;
  }

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