:root {
  --primary-color: #017439;
  --accent-color: #FFFFFF;
  --button-bg-color: #C30808;
  --button-text-color: #FFFF00;
  --header-top-bg: #004d2b; /* Darker primary for header top */
  --main-nav-bg: #017439; /* Primary color for main nav */
  --footer-bg: #003b21; /* Even darker primary for footer */
  --header-offset: 110px; /* Desktop: header-top (60px) + main-nav (50px) */
}
@media (max-width: 768px) {
  :root {
    --header-offset: 110px; /* Mobile: header-top (60px) + mobile-nav-buttons (50px) */
  }
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  padding-top: var(--header-offset); /* Ensure content is not hidden by fixed header */
  overflow-x: hidden; /* Prevent horizontal scroll on body */
}
.page-content img {
  max-width: 100% !important;
  height: auto !important;
  display: block;
}
.page-content {
  overflow-x: hidden;
  max-width: 100%;
}

/* Site Header */
.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  min-height: 110px; /* Ensure sufficient height for content */
  box-sizing: border-box;
  overflow-x: hidden; /* Prevent header itself from causing horizontal scroll */
}

/* Header Top */
.header-top {
  background-color: var(--header-top-bg);
  min-height: 60px; /* Fixed height for top bar */
  display: flex;
  align-items: center;
  padding: 10px 0; /* Vertical padding */
  box-sizing: border-box;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px; /* Horizontal padding for content inside container */
  box-sizing: border-box;
}

.logo {
  color: var(--button-text-color); /* Yellow for logo text */
  font-size: 28px;
  font-weight: bold;
  text-decoration: none;
  white-space: nowrap;
  padding: 0; /* No extra padding on logo itself */
  display: block; /* Ensure it's not hidden by default */
}

/* Desktop Navigation Buttons */
.desktop-nav-buttons {
  display: flex;
  gap: 10px;
  align-items: center;
}

/* Mobile Navigation Buttons (hidden by default on desktop) */
.mobile-nav-buttons {
  display: none; /* Hidden on desktop */
}

/* Main Navigation */
.main-nav {
  background-color: var(--main-nav-bg);
  min-height: 50px; /* Fixed height for main nav */
  display: flex; /* Desktop: display flex */
  align-items: center;
  padding: 8px 0; /* Vertical padding */
  box-sizing: border-box;
}

.main-nav .nav-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex; /* Desktop: flex for horizontal links */
  justify-content: center;
  align-items: center;
  padding: 0 20px; /* Horizontal padding */
  box-sizing: border-box;
}

.main-nav .nav-link {
  color: var(--accent-color);
  text-decoration: none;
  padding: 8px 15px;
  transition: background-color 0.3s ease;
  white-space: nowrap;
}

.main-nav .nav-link:hover {
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}

/* Hamburger Menu (hidden by default on desktop) */
.hamburger-menu {
  display: none; /* Hidden on desktop */
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  z-index: 1001;
  order: 0; /* Controls order on mobile */
}

.hamburger-menu span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--accent-color);
  margin: 5px 0;
  transition: 0.4s;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease;
  white-space: nowrap;
  text-align: center;
}

.btn-register, .btn-login {
  background-color: var(--button-bg-color);
  color: var(--button-text-color);
  border: 1px solid var(--button-bg-color); /* Ensure border for contrast */
}

.btn-register:hover, .btn-login:hover {
  background-color: #a30707; /* Slightly darker red */
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Site Footer */
.site-footer {
  background-color: var(--footer-bg);
  color: var(--accent-color);
  padding: 40px 20px;
  text-align: center;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  gap: 30px;
  text-align: left;
}

.footer-col {
  flex: 1;
  min-width: 200px;
  max-width: 300px;
}

.footer-col h3 {
  color: var(--button-text-color); /* Yellow for footer headings */
  font-size: 18px;
  margin-bottom: 15px;
}

.footer-col p, .footer-col ul {
  font-size: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.footer-col ul li a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-col ul li a:hover {
  color: var(--button-text-color); /* Yellow on hover */
}

.copyright {
  margin-top: 30px;
  font-size: 13px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
}

/* Mobile Styles */
@media (max-width: 768px) {
  body {
    padding-top: var(--header-offset);
  }
  .header-container, .main-nav .nav-container, .footer-container {
    padding: 0 15px; /* Smaller horizontal padding for mobile */
    max-width: none; /* Remove max-width on mobile */
    width: 100%; /* Ensure full width */
  }
  .site-header {
    min-height: auto; /* Allow height to adjust for mobile buttons */
  }

  /* Header Top Mobile */
  .header-top .header-container {
    justify-content: space-between; /* Space out hamburger, logo, empty space */
    position: relative; /* For absolute logo centering if needed */
  }

  /* Hamburger Menu Visible */
  .hamburger-menu {
    display: block;
    order: -1; /* Move to the left */
  }

  /* Logo Centering (Text Logo) */
  .logo {
    flex: 1; /* Allows logo to take available space for centering */
    text-align: center;
    padding: 0;
    white-space: normal;
  }
  
  /* Mobile Nav Buttons */
  .desktop-nav-buttons {
    display: none; /* Hide desktop buttons */
  }
  .mobile-nav-buttons {
    display: flex !important; /* Always show mobile buttons */
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 10px 15px; /* Padding for the button container */
    overflow: hidden; /* Prevent overflow */
    gap: 10px;
    flex-wrap: nowrap; /* Keep buttons on one line */
    background-color: var(--header-top-bg); /* Same as header top for continuity */
    border-top: 1px solid rgba(255,255,255,0.1); /* Separator */
  }
  .mobile-nav-buttons .btn {
    flex: 1;
    min-width: 0;
    max-width: calc(50% - 5px); /* Account for gap */
    box-sizing: border-box;
    padding: 8px 12px; /* Smaller padding */
    font-size: 13px; /* Smaller font size */
    white-space: normal; /* Allow text wrapping */
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  /* Main Nav (Mobile Menu) */
  .main-nav {
    display: none; /* Hidden by default */
    flex-direction: column;
    position: fixed;
    top: var(--header-offset); /* Below header and mobile buttons */
    left: 0;
    width: 80%; /* Menu width */
    max-width: 300px;
    height: calc(100% - var(--header-offset)); /* Full height below header */
    background-color: var(--main-nav-bg);
    overflow-y: auto;
    transform: translateX(-100%); /* Slide out to the left */
    transition: transform 0.3s ease;
    box-shadow: 2px 0 5px rgba(0,0,0,0.2);
    padding: 20px 0; /* Vertical padding inside menu */
    box-sizing: border-box;
  }
  .main-nav.active {
    display: flex; /* Show menu when active */
    transform: translateX(0); /* Slide in */
  }
  .main-nav .nav-container {
    flex-direction: column;
    align-items: flex-start; /* Align links to the left */
    padding: 0; /* Remove container padding as nav-link has its own */
  }
  .main-nav .nav-link {
    width: 100%;
    padding: 12px 20px; /* Larger padding for mobile links */
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  .main-nav .nav-link:last-child {
    border-bottom: none;
  }

  /* Hamburger Menu Animation */
  .hamburger-menu.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .hamburger-menu.active span:nth-child(2) {
    opacity: 0;
  }
  .hamburger-menu.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  /* Mobile Menu Overlay */
  .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: 999;
  }
  .mobile-menu-overlay.active {
    display: block;
  }

  /* Footer Mobile */
  .footer-container {
    flex-direction: column;
    align-items: center;
  }
  .footer-col {
    max-width: 100%;
    text-align: center;
  }
  .footer-col ul {
    text-align: center;
  }
}
/* 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;
  }
}