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

/* Base Styles */
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; background-color: #FFFFFF; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* Header */
.site-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; box-shadow: 0 2px 5px rgba(0,0,0,0.1); background-color: #017439; /* Default background for entire header */ }

.header-top {
  box-sizing: border-box;
  min-height: 68px;
  height: 68px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: #00502A; /* Darker green for header top */
  width: 100%;
  color: #FFFFFF;
}

.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;
  padding-left: 25px;
  padding-right: 25px;
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: #FFFFFF;
  text-transform: uppercase;
  display: block;
}

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

.btn {
  padding: 10px 18px;
  border-radius: 5px;
  font-weight: bold;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.3s ease, color 0.3s ease;
  white-space: nowrap;
  text-decoration: none;
}

.btn-register {
  background-color: #C30808;
  color: #FFFF00;
  border: none;
}
.btn-register:hover { background-color: #a00606; }

.btn-login {
  background-color: #C30808;
  color: #FFFF00;
  border: none;
}
.btn-login:hover { background-color: #a00606; }

.hamburger-menu {
  display: none; /* Hidden on desktop */
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 25px;
  cursor: pointer;
  z-index: 1001;
}

.hamburger-menu .bar {
  width: 100%;
  height: 3px;
  background-color: #FFFFFF;
  transition: all 0.3s ease;
}

.main-nav {
  box-sizing: border-box;
  min-height: 52px;
  height: 52px;
  display: flex; /* Displayed on desktop */
  align-items: center;
  overflow: hidden;
  background-color: #017439; /* Primary green for main nav */
  width: 100%;
  color: #FFFFFF;
}

.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;
  gap: 25px;
}

.nav-link {
  font-size: 16px;
  font-weight: bold;
  color: #FFFFFF;
  padding: 10px 0;
  white-space: nowrap;
  transition: color 0.3s ease;
}
.nav-link:hover { color: #FFFF00; }

.mobile-nav-buttons {
  box-sizing: border-box;
  display: none; /* Hidden on desktop */
  min-height: 48px;
  background-color: #017439; /* Same as main-nav for consistency */
}

.overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: 998;
}

/* Footer */
.site-footer {
  background-color: #00502A; /* Darker green for footer background */
  color: #FFFFFF;
  padding: 40px 0 20px;
  font-size: 14px;
}

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

.footer-col h3 {
  font-size: 18px;
  margin-bottom: 15px;
  color: #FFFF00;
}

.footer-logo {
  font-size: 28px;
  font-weight: bold;
  color: #FFFFFF;
  text-transform: uppercase;
  margin-bottom: 15px;
  display: block;
}

.footer-description {
  line-height: 1.8;
  color: #E0E0E0;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

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

.footer-nav a {
  color: #E0E0E0;
  transition: color 0.3s ease;
}
.footer-nav a:hover { color: #FFFF00; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  text-align: center;
  color: #E0E0E0;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

.footer-slot-anchor-inner { /* Empty for dynamic content injection */ }

/* Mobile Styles */
@media (max-width: 768px) {
  :root { --header-offset: 110px; }
  body.no-scroll { overflow: hidden; }

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

  .header-container {
    width: 100%;
    max-width: none;
    padding: 0;
    position: relative;
    justify-content: center; /* Center logo by default */
  }

  .logo {
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    font-size: 24px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    max-width: calc(100% - 100px); /* Leave space for hamburger */
  }

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

  .hamburger-menu {
    display: flex;
    position: relative;
    z-index: 1001;
    order: -1; /* Place to the left */
  }

  .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); }

  .mobile-nav-buttons {
    display: flex !important;
    min-height: 48px;
    align-items: center;
    width: 100%; max-width: 100%;
    box-sizing: border-box;
    padding-left: 15px; padding-right: 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    justify-content: center;
    background-color: #017439;
  }

  .mobile-nav-buttons .btn {
    flex: 1; min-width: 0;
    max-width: calc(50% - 5px); /* Adjusted for 2 buttons with 10px gap */
    box-sizing: border-box;
    padding: 8px 12px;
    font-size: 13px;
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .main-nav {
    display: none; /* Hidden by default */
    position: fixed;
    top: var(--header-offset); /* Position below fixed header and mobile buttons */
    left: 0;
    width: 280px;
    height: calc(100% - var(--header-offset));
    flex-direction: column;
    background-color: #017439; /* Primary green for mobile menu */
    padding: 20px;
    transform: translateX(-100%); /* Off-screen by default */
    transition: transform 0.3s ease;
    box-shadow: 2px 0 5px rgba(0,0,0,0.2);
    z-index: 1000;
    align-items: flex-start;
    justify-content: flex-start;
    overflow-y: auto;
  }

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

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
    width: 100%;
    max-width: none;
    padding: 0;
  }

  .nav-link {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 17px;
  }
  .nav-link:last-child { border-bottom: none; }

  .overlay.active { display: block; }

  .site-footer {
    padding: 30px 0 15px;
  }

  .footer-top-grid {
    grid-template-columns: 1fr; /* Single column layout */
    gap: 25px;
    padding: 0 15px;
  }

  .footer-col h3 { font-size: 17px; margin-bottom: 10px; }
  .footer-logo { font-size: 24px; margin-bottom: 10px; }
  .footer-description { font-size: 13px; }
  .footer-nav li { margin-bottom: 6px; }
  .footer-nav a { font-size: 13px; }
  .footer-bottom { padding-top: 15px; font-size: 12px; padding-left: 15px; padding-right: 15px; }

  /* Mobile content overflow protection */
  .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;
}