:root {
  --primary-color: #FFD700; /* Gold */
  --secondary-color: #8B0000; /* Dark Red */
  --dark-bg-color-1: #1a1a1a; /* Very dark grey for header top */
  --dark-bg-color-2: #330000; /* Darker red for main nav */
  --text-light: #ffffff;
  --text-dark: #333333;
  --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 {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding-top: var(--header-offset); /* Ensure content is not hidden by fixed header */
  line-height: 1.6;
  color: var(--text-light);
  background-color: #333;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column; /* Stacks header-top and main-nav vertically */
}

.header-top {
  background-color: var(--dark-bg-color-1); /* Very dark grey */
  min-height: 60px;
  display: flex;
  align-items: center;
  padding: 10px 0;
  width: 100%;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: var(--primary-color); /* Gold */
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  display: block;
}

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

.btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--primary-color); /* Gold button */
  color: var(--text-dark); /* Dark text for gold button */
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease;
  white-space: nowrap;
  border: none;
  cursor: pointer;
  box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

.btn:hover {
  background-color: #e6c200; /* Slightly darker gold on hover */
  transform: translateY(-2px);
}

.main-nav {
  background-color: var(--dark-bg-color-2); /* Dark red */
  min-height: 50px;
  display: flex; /* Desktop: default display flex */
  align-items: center;
  padding: 0;
  width: 100%;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-direction: row; /* Desktop: horizontal */
  justify-content: center; /* Desktop: centered */
  align-items: center;
  padding: 10px 20px;
}

.nav-link {
  color: var(--text-light);
  text-decoration: none;
  padding: 8px 15px;
  font-weight: bold;
  transition: color 0.3s ease, background-color 0.3s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--primary-color); /* Gold on hover */
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 5px;
}

/* Hamburger menu for mobile */
.hamburger-menu {
  display: none;
  width: 30px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 1001;
  padding: 0;
  margin-right: 15px; /* Space from logo */
}

.hamburger-menu .bar {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--primary-color); /* Gold bars */
  margin: 5px 0;
  transition: all 0.3s ease;
}

.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: none; /* Hidden on desktop */
}

.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 998;
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

/* Footer */
.site-footer {
  background-color: var(--dark-bg-color-1);
  color: var(--text-light);
  padding: 40px 20px 20px;
  font-size: 14px;
  border-top: 3px solid var(--secondary-color);
}

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

.footer-section {
  flex: 1;
  min-width: 250px;
}

.footer-section h3 {
  color: var(--primary-color);
  font-size: 18px;
  margin-bottom: 15px;
  border-bottom: 1px solid rgba(255, 215, 0, 0.3);
  padding-bottom: 5px;
}

.footer-section p, .footer-section ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-section p a {
  color: var(--primary-color);
  text-decoration: none;
}

.footer-section p a:hover {
  text-decoration: underline;
}

.footer-nav li a {
  color: var(--text-light);
  text-decoration: none;
  display: block;
  padding: 5px 0;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  max-width: 1200px;
  margin: 30px auto 0;
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
}

/* Mobile styles */
@media (max-width: 768px) {
  .header-container {
    padding: 0 15px;
  }

  .logo {
    flex: 1;
    text-align: center;
    font-size: 24px;
    order: 0;
  }
  /* Specific rule for image logo centering - not applicable here as it's text, but kept for reference */
  .logo img {
    display: block !important;
    max-width: 100%;
    height: auto;
    max-height: 40px;
    margin: 0 auto;
  }

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

  .hamburger-menu {
    display: block;
    order: -1;
    margin-right: 0;
  }

  .main-nav {
    display: none;
    position: fixed;
    top: var(--header-offset);
    left: 0;
    width: 280px;
    height: calc(100% - var(--header-offset));
    background-color: var(--dark-bg-color-2);
    flex-direction: column;
    padding: 20px 0;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.5);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    z-index: 999;
  }

  .main-nav.active {
    display: flex;
    transform: translateX(0);
  }

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 15px;
  }

  .nav-link {
    width: 100%;
    padding: 12px 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .mobile-nav-buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
    background-color: var(--dark-bg-color-1);
    padding: 10px 15px;
    min-height: 50px;
    align-items: center;
    width: 100%;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
  }

  .site-header {
    flex-direction: column;
  }

  .site-header .header-top {
    width: 100%;
  }

  .site-header .mobile-nav-buttons {
    width: 100%;
  }

  .footer-container {
    flex-direction: column;
    gap: 20px;
  }

  .footer-section {
    min-width: unset;
    flex: none;
    width: 100%;
    text-align: center;
  }

  .footer-section h3 {
    text-align: center;
  }

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

  .footer-nav li a {
    display: inline-block;
    padding: 5px 10px;
  }

  /* 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;
  }

  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;
  }
}