:root {
  --primary-color: #017439;
  --secondary-color: #FFFFFF;
  --header-top-bg: #00572C; /* Darker green for header top */
  --main-nav-bg: #FFFFFF; /* White for main nav */
  --btn-bg: #C30808;
  --btn-text: #FFFFFF; /* Adjusted for WCAG AA contrast */
  --footer-bg: #333333;
  --footer-text: #CCCCCC;

  --header-offset: 110px; /* Desktop: header-top (60px) + main-nav (50px) */
}
@media (max-width: 768px) {
  :root {
    --header-offset: 100px; /* Mobile: header-top (50px) + mobile-nav-buttons (50px) */
  }
}

/* Base Styles */
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding-top: var(--header-offset); /* Ensure content is not covered by fixed header */
  line-height: 1.6;
  color: #333;
  overflow-x: hidden; /* Prevent horizontal scroll for body */
}
a {
  text-decoration: none;
  color: var(--primary-color);
}
a:hover {
  color: #004D26; /* Darker shade for hover */
}
ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--btn-bg);
  color: var(--btn-text);
  border-radius: 5px;
  font-weight: bold;
  text-align: center;
  transition: background-color 0.3s ease;
  white-space: nowrap; /* Prevent text wrapping on desktop */
  text-decoration: none; /* Remove underline for buttons */
}
.btn:hover {
  background-color: #A00606; /* Slightly darker red on hover */
}

/* Site 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: var(--main-nav-bg); /* Fallback, header-top will cover */
}

/* Header Top */
.header-top {
  background-color: var(--header-top-bg);
  padding: 15px 0; /* Total height 30px (padding) + content height ~30px = 60px */
  color: var(--secondary-color);
}
.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 30px; /* Padding for desktop logo/buttons */
}
.site-header .logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--secondary-color);
  text-decoration: none;
  display: block; /* Ensure logo is visible */
}
.site-header .logo:hover {
  color: #DDD;
}
.desktop-nav-buttons {
  display: flex;
  gap: 10px;
}
.mobile-nav-buttons {
  display: none; /* Hidden by default on desktop */
}
.hamburger-menu {
  display: none; /* Hidden by default on desktop */
}

/* Main Navigation */
.main-nav {
  background-color: var(--main-nav-bg);
  padding: 10px 0; /* Total height 20px (padding) + content height ~30px = 50px */
  display: flex; /* Desktop default: flex */
  flex-direction: row; /* Desktop default: row */
  justify-content: center; /* Center nav links on desktop */
}
.main-nav .nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap; /* Allow wrapping for many links on desktop if needed */
  justify-content: center;
  align-items: center;
  padding: 0 20px;
}
.main-nav .nav-link {
  color: var(--primary-color);
  padding: 8px 15px;
  font-weight: bold;
  transition: background-color 0.3s ease, color 0.3s ease;
  border-radius: 3px;
  white-space: nowrap;
}
.main-nav .nav-link:hover {
  background-color: #E0E0E0; /* Light grey hover */
  color: var(--primary-color);
}

/* Mobile Specific Styles */
@media (max-width: 768px) {
  .header-top {
    padding: 10px 0; /* Smaller padding for mobile header top, content height ~30px = 50px */
  }
  .header-container {
    width: 100%;
    max-width: none; /* Allow container to take full width */
    padding: 0 15px; /* Smaller padding for mobile container */
    justify-content: space-between; /* Hamburger left, Logo center */
    position: relative; /* For logo absolute positioning */
  }
  .hamburger-menu {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    cursor: pointer;
    z-index: 1001; /* Above logo and buttons */
    position: relative;
  }
  .hamburger-menu span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--secondary-color);
    border-radius: 3px;
    transition: all 0.3s ease;
  }
  .hamburger-menu.active span:nth-child(1) {
    transform: translateY(11px) rotate(45deg);
  }
  .hamburger-menu.active span:nth-child(2) {
    opacity: 0;
  }
  .hamburger-menu.active span:nth-child(3) {
    transform: translateY(-11px) rotate(-45deg);
  }

  /* Mobile Logo Centering (TEXT LOGO) */
  .site-header .logo {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: block; /* Ensure it's visible */
    font-size: 20px; /* Smaller font size for mobile */
    max-width: calc(100% - 100px); /* Ensure space for hamburger and potential right items */
    text-align: center;
  }

  .desktop-nav-buttons {
    display: none; /* Hide desktop buttons on mobile */
  }

  .mobile-nav-buttons {
    display: flex !important; /* Show mobile buttons, content height ~30px + 20px padding = 50px */
    width: 100%; max-width: 100%;
    box-sizing: border-box;
    padding: 10px 15px; /* Padding for the button bar */
    overflow: hidden; /* Prevent overflow */
    gap: 10px;
    flex-wrap: nowrap; /* Keep buttons in one line */
    background-color: var(--header-top-bg); /* Same background as header-top */
  }
  .mobile-nav-buttons .btn {
    flex: 1; min-width: 0;
    max-width: calc(50% - 5px); /* Ensure two buttons fit with gap */
    box-sizing: border-box;
    padding: 8px 12px; /* Smaller padding for mobile buttons */
    font-size: 13px; /* Smaller font size for mobile buttons */
    white-space: normal; /* Allow text to wrap */
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .main-nav {
    display: none; /* Hidden by default */
    position: fixed;
    top: var(--header-offset); /* Start below the header */
    left: 0;
    width: 80%; /* Menu width */
    height: calc(100vh - var(--header-offset)); /* Full height below header */
    background-color: var(--main-nav-bg);
    flex-direction: column; /* Vertical menu */
    padding: 20px 0;
    box-shadow: 2px 0 5px rgba(0,0,0,0.2);
    transform: translateX(-100%); /* Off-screen by default */
    transition: transform 0.3s ease;
    z-index: 999; /* Below hamburger, above overlay */
    overflow-y: auto; /* Enable scrolling for long menus */
  }
  .main-nav.active {
    display: flex; /* Show menu */
    transform: translateX(0); /* Slide in */
  }
  .main-nav .nav-container {
    width: 100%;
    max-width: none; /* Full width for mobile menu items */
    flex-direction: column;
    align-items: flex-start; /* Align links to the left */
    padding: 0 15px;
  }
  .main-nav .nav-link {
    width: 100%;
    padding: 12px 15px;
    border-bottom: 1px solid #EEE;
  }
  .main-nav .nav-link:last-child {
    border-bottom: none;
  }

  .mobile-menu-overlay {
    display: none; /* Hidden by default */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998; /* Below menu, above content */
  }
  .mobile-menu-overlay.active {
    display: block;
  }

  /* 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;
  }
}

/* Footer Styles */
.site-footer {
  background-color: var(--footer-bg);
  color: var(--footer-text);
  padding: 40px 20px;
  font-size: 14px;
}
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 20px;
}
.footer-col {
  flex: 1;
  min-width: 180px; /* Minimum width for columns before wrapping */
}
.footer-col h3 {
  color: var(--secondary-color);
  font-size: 16px;
  margin-bottom: 15px;
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul li a {
  color: var(--footer-text);
  transition: color 0.3s ease;
}
.footer-col ul li a:hover {
  color: var(--primary-color);
}
.footer-info {
  text-align: right;
  flex-grow: 1; /* Allow info column to grow */
}
.footer-logo {
  font-size: 20px;
  font-weight: bold;
  color: var(--secondary-color);
  text-decoration: none;
  display: block;
  margin-bottom: 15px;
}
.footer-logo:hover {
  color: var(--primary-color);
}
.site-footer p {
  margin: 0;
}

@media (max-width: 768px) {
  .footer-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 0 15px;
  }
  .footer-col {
    width: 100%;
    min-width: unset;
    margin-bottom: 20px;
  }
  .footer-info {
    text-align: center;
  }
  .footer-logo {
    margin-left: auto;
    margin-right: auto;
  }
}

/* Utility for body no-scroll */
body.no-scroll {
  overflow: hidden;
}
/* Payment Methods 图标容器样式 */
.payment-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 5px;
}

.payment-icons img,
.payment-icon {
  max-height: 50px;
  height: auto;
  width: auto;
  display: block;
}

/* Game Providers 图标容器样式 */
.game-providers-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
}

.game-providers-icons img,
.game-provider-icon {
  max-height: 50px;
  height: auto;
  width: auto;
  display: block;
}

/* Social Media 图标容器样式 */
.social-media-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
}

.social-media-icons img,
.social-media-icon {
  max-height: 50px;
  height: auto;
  width: auto;
  display: block;
}
/* 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;
  }
}