:root {
  --primary-color: #017439;
  --secondary-color: #FFFFFF;
  --btn-register-color: #C30808;
  --btn-login-color: #C30808;
  --btn-font-color: #FFFF00;
  --header-top-bg: var(--primary-color);
  --main-nav-bg: #1a8c4c; /* A slightly lighter green for contrast */
  --header-offset: 122px; /* Desktop: 68px (header-top) + 52px (main-nav) + 2px buffer */
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding-top: var(--header-offset);
  color: #333;
  line-height: 1.6;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  background-color: var(--header-top-bg); /* Fallback, specific sections define their own */
}

.header-top {
  box-sizing: border-box;
  height: 68px; /* Fixed height for desktop */
  min-height: 68px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--header-top-bg);
  width: 100%;
  padding: 0 20px; /* Outer padding for desktop */
}

.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: var(--secondary-color);
  text-decoration: none;
  white-space: nowrap;
  padding: 0;
}

.logo img {
  display: block;
  max-height: 60px; /* Max height for desktop logo */
  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: #f0f0f0; /* Light background for mobile buttons */
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 5px;
  font-size: 15px;
  font-weight: bold;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease;
  border: none;
}

.btn-login {
  background-color: var(--btn-login-color);
  color: var(--btn-font-color);
}

.btn-login:hover {
  background-color: #a30606; /* Darker red */
  transform: translateY(-1px);
}

.btn-register {
  background-color: var(--btn-register-color);
  color: var(--btn-font-color);
}

.btn-register:hover {
  background-color: #a30606; /* Darker red */
  transform: translateY(-1px);
}

.hamburger-menu {
  display: none; /* Hidden by default on desktop */
  width: 30px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
  padding: 0;
  position: relative;
  z-index: 1001; /* Above header */
  margin-right: 20px; /* Space between hamburger and logo on mobile */
}

.hamburger-icon {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--secondary-color);
  transition: all 0.3s ease;
}

.main-nav {
  box-sizing: border-box;
  height: 52px; /* Fixed height for desktop */
  min-height: 52px;
  display: flex; /* Show by default on desktop */
  align-items: center;
  overflow: hidden;
  background-color: var(--main-nav-bg);
  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;
  gap: 25px;
}

.nav-link {
  color: var(--secondary-color);
  text-decoration: none;
  font-size: 16px;
  font-weight: bold;
  padding: 5px 0;
  white-space: nowrap;
  transition: color 0.3s ease, border-bottom 0.3s ease;
}

.nav-link:hover {
  color: var(--btn-font-color); /* Yellow on hover */
  border-bottom: 2px solid var(--btn-font-color);
}

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

.mobile-menu-overlay.active {
  display: block;
  opacity: 1;
}

/* Footer styles */
.site-footer {
  background-color: #222;
  color: #ccc;
  padding: 40px 20px 20px;
  font-size: 14px;
}

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

.footer-col {
  margin-bottom: 20px;
}

.footer-col h3 {
  color: var(--secondary-color);
  font-size: 18px;
  margin-bottom: 15px;
}

.footer-logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--secondary-color);
  text-decoration: none;
  margin-bottom: 15px;
  display: block;
}

.footer-description {
  line-height: 1.6;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

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

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

.footer-nav a {
  color: #ccc;
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid #444;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-bottom p {
  margin: 0;
  color: #999;
}

.footer-slot-anchor-inner {
  min-height: 1px; /* Ensure anchor is visible for injection */
  display: block;
}

/* 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%;
  }

  .header-top {
    height: 60px !important;
    min-height: 60px !important;
    padding: 0 15px;
    justify-content: space-between; /* To allow hamburger left, logo center */
  }

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

  .hamburger-menu {
    display: flex; /* Show hamburger menu on mobile */
  }

  .hamburger-menu.active .hamburger-icon:nth-child(1) {
    transform: translateY(10px) rotate(45deg);
  }

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

  .hamburger-menu.active .hamburger-icon:nth-child(3) {
    transform: translateY(-11px) rotate(-45deg);
  }

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

  .logo img {
    max-height: 56px !important; /* Max height for mobile logo */
  }

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

  .mobile-nav-buttons {
    display: flex !important; /* Show mobile buttons */
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 10px 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    background-color: #f0f0f0; /* Ensure it has a background */
  }

  .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;
  }

  .main-nav {
    height: 100vh; /* Full viewport height for mobile menu */
    min-height: auto;
    width: 250px;
    position: fixed;
    top: 0; /* Align with viewport top */
    left: 0;
    background-color: var(--main-nav-bg);
    padding-top: var(--header-offset); /* Push menu content below header */
    transform: translateX(-100%); /* Hide by default */
    transition: transform 0.3s ease;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    z-index: 1001; /* Above header and overlay */
    box-shadow: 2px 0 5px rgba(0,0,0,0.3);
    display: none; /* Hidden by default */
  }

  .main-nav.active {
    transform: translateX(0); /* Show menu */
    display: flex; /* Ensure it's displayed when active */
  }

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    width: 100%;
    max-width: none;
    padding: 20px 15px;
    gap: 15px;
  }

  .nav-link {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  }

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

  .footer-top-grid {
    grid-template-columns: 1fr; /* Single column for mobile */
  }

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

  .footer-logo {
    margin-left: auto;
    margin-right: auto;
  }

  .footer-nav ul {
    text-align: center;
  }
}
/* 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;
  }
}