:root {
  --header-offset: 122px; /* 68px (header-top) + 52px (main-nav) + 2px buffer */
  --color-primary: #11A84E;
  --color-secondary: #22C768;
  --color-button-gradient-start: #2AD16F;
  --color-button-gradient-end: #13994A;
  --color-card-bg: #11271B;
  --color-background: #08160F;
  --color-text-main: #F2FFF6;
  --color-text-secondary: #A7D9B8;
  --color-border: #2E7A4E;
  --color-glow: #57E38D;
  --color-gold: #F2C14E;
  --color-divider: #1E3A2A;
  --color-deep-green: #0A4B2C;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--color-text-main);
  background-color: var(--color-background);
  padding-top: var(--header-offset);
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Accessibility: Focus styles */
*:focus {
  outline: 2px solid var(--color-glow);
  outline-offset: 2px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  background-color: var(--color-deep-green); /* Fallback for transparency */
}

.header-top {
  box-sizing: border-box;
  height: 68px;
  min-height: 68px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--color-deep-green);
}

.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: 0 20px;
}

.logo {
  color: var(--color-text-main);
  font-size: 28px;
  font-weight: bold;
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: 0.5px;
}

.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(--color-card-bg);
  width: 100%;
  padding: 10px 20px;
  justify-content: center;
  align-items: center;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  color: var(--color-text-main);
  background: linear-gradient(180deg, var(--color-button-gradient-start) 0%, var(--color-button-gradient-end) 100%);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  box-shadow: none;
}

.btn-secondary:hover {
  background-color: var(--color-deep-green);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.hamburger-menu {
  display: none; /* Hidden on desktop */
  width: 30px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 1001;
  padding: 0;
}

.hamburger-icon {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--color-text-main);
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  transition: all 0.3s ease;
}

.hamburger-icon::before, .hamburger-icon::after {
  content: '';
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--color-text-main);
  position: absolute;
  left: 0;
  transition: all 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 {
  top: 0;
  transform: rotate(45deg);
}

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

.main-nav {
  box-sizing: border-box;
  height: 52px;
  min-height: 52px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--color-card-bg);
  border-top: 1px solid var(--color-border);
}

.main-nav .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(--color-text-main);
  text-decoration: none;
  font-weight: 500;
  font-size: 16px;
  padding: 5px 0;
  position: relative;
  white-space: nowrap;
  transition: color 0.3s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--color-glow);
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-glow);
}

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

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

.site-footer {
  background-color: var(--color-background);
  color: var(--color-text-secondary);
  padding: 40px 0 0;
  font-size: 14px;
  line-height: 1.6;
}

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

.footer-col {
  background-color: var(--color-card-bg);
  padding: 20px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.footer-col h3 {
  color: var(--color-text-main);
  font-size: 18px;
  margin-top: 0;
  margin-bottom: 15px;
  border-bottom: 1px solid var(--color-divider);
  padding-bottom: 10px;
}

.footer-logo {
  color: var(--color-glow);
  font-size: 28px;
  font-weight: bold;
  text-decoration: none;
  display: block;
  margin-bottom: 15px;
  letter-spacing: 0.5px;
}

.footer-description {
  margin-bottom: 15px;
  color: var(--color-text-secondary);
  word-wrap: break-word;
  overflow-wrap: break-word;
}

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

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

.footer-nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  background-color: var(--color-divider);
  padding: 15px 20px;
  text-align: center;
  color: var(--color-text-secondary);
  margin-top: 20px;
  border-top: 1px solid var(--color-border);
}

.footer-bottom p {
  margin: 0;
}

/* Footer slot anchors (must be visible/renderable) */
.footer-slot-anchor-inner {
  min-height: 1px; /* Ensure visibility for slot injection */
  width: 100%;
  box-sizing: border-box;
}

@media (max-width: 768px) {
  :root {
    --header-offset: 110px; /* 60px (header-top) + 48px (main-nav) + 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 1px 5px rgba(0, 0, 0, 0.2);
  }

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

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

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

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

  .mobile-nav-buttons {
    display: flex !important;
    flex-wrap: nowrap;
    padding: 8px 15px;
    min-height: 48px;
  }

  .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;
  }

  .hamburger-menu {
    display: block;
    order: -1; /* Place it at the start */
  }

  .main-nav {
    position: fixed;
    top: calc(var(--header-offset) - 2px); /* Align with header bottom, -2px to account for border */
    left: 0;
    width: 280px;
    height: calc(100% - var(--header-offset) + 2px); /* Full height below header */
    background-color: var(--color-card-bg);
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 20px 0;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    display: none; /* Initially hidden, display:flex on active */
    overflow-y: auto;
    box-sizing: border-box;
  }

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

  .main-nav .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 20px;
    gap: 15px;
    width: 100%;
    max-width: none;
    height: auto;
  }

  .nav-link {
    width: 100%;
    padding: 10px 0;
    font-size: 17px;
  }

  .nav-link::after {
    bottom: -5px;
  }

  .overlay.active {
    display: block;
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
    padding: 0 15px 20px;
    gap: 20px;
  }

  .footer-col {
    padding: 15px;
  }

  .footer-logo {
    font-size: 24px;
  }

  .footer-bottom {
    padding: 12px 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;
  }
}