:root {
  --primary-color: #26A9E0; /* 淡蓝色 */
  --secondary-color: #FFFFFF;
  --login-color: #EA7C07;
  --dark-bg-color: #0a0a0a; /* 暗色背景 */
  --dark-bg-color-light: #1a1a2e; /* 稍亮的暗色 */
  --dark-bg-color-dark: #16213e; /* 更深的暗色 */

  /* Neon colors derived from primary/secondary/accent */
  --neon-primary: var(--primary-color); /* #26A9E0 */
  --neon-secondary: #00ffff; /* A contrasting vibrant color, e.g., cyan */
  --neon-accent: #ff00ff; /* Another contrasting vibrant color, e.g., magenta */

  --marquee-height-desktop: 45px;
  --header-top-height-desktop: 60px;
  --main-nav-height-desktop: 50px;

  --marquee-height-mobile: 30px;
  --header-top-height-mobile: 50px;
  --mobile-buttons-height-mobile: 50px;

  --header-offset: calc(var(--marquee-height-desktop) + var(--header-top-height-desktop) + var(--main-nav-height-desktop)); /* 桌面端：155px */
}

@media (max-width: 768px) {
  :root {
    --header-offset: calc(var(--marquee-height-mobile) + var(--header-top-height-mobile) + var(--mobile-buttons-height-mobile)); /* 移动端：130px */
  }
}

/* Base styling */
html {
  scroll-behavior: smooth;
}
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding-top: var(--header-offset); /* Fixed header offset */
  background-color: var(--secondary-color); /* 背景: #FFFFFF */
  color: #333;
  line-height: 1.6;
  overflow-x: hidden; /* Prevent body overflow on mobile */
}

a {
  text-decoration: none;
  color: inherit;
}

/* Neon Animations */
@keyframes rainbow-border {
  0% { border-color: #ff0000; box-shadow: 0 0 10px #ff0000, 0 0 20px #ff0000; }
  16.6% { border-color: #ff8000; box-shadow: 0 0 10px #ff8000, 0 0 20px #ff8000; }
  33.3% { border-color: #ffff00; box-shadow: 0 0 10px #ffff00, 0 0 20px #ffff00; }
  50% { border-color: #00ff00; box-shadow: 0 0 10px #00ff00, 0 0 20px #00ff00; }
  66.6% { border-color: #0000ff; box-shadow: 0 0 10px #0000ff, 0 0 20px #0000ff; }
  83.3% { border-color: #8000ff; box-shadow: 0 0 10px #8000ff, 0 0 20px #8000ff; }
  100% { border-color: #ff0000; box-shadow: 0 0 10px #ff0000, 0 0 20px #ff0000; }
}

@keyframes theme-colors {
  0%, 100% { border-color: var(--neon-primary); box-shadow: 0 0 10px var(--neon-primary), 0 0 20px var(--neon-primary); }
  33% { border-color: var(--neon-secondary); box-shadow: 0 0 10px var(--neon-secondary), 0 0 20px var(--neon-secondary); }
  66% { border-color: var(--neon-accent); box-shadow: 0 0 10px var(--neon-accent), 0 0 20px var(--neon-accent); }
}

@keyframes text-glow-flow {
  0% { text-shadow: 0 0 5px var(--neon-primary), 0 0 10px var(--neon-primary), 0 0 15px var(--neon-primary); color: #ffffff; }
  50% { text-shadow: 0 0 5px var(--neon-secondary), 0 0 10px var(--neon-secondary), 0 0 15px var(--neon-secondary); color: #ffffff; }
  100% { text-shadow: 0 0 5px var(--neon-accent), 0 0 10px var(--neon-accent), 0 0 15px var(--neon-accent); color: #ffffff; }
}

@keyframes marquee-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.15); opacity: 0.9; }
}

@keyframes marquee-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* Marquee Section */
.marquee-section {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: linear-gradient(135deg, var(--dark-bg-color), var(--dark-bg-color-light), var(--dark-bg-color-dark));
  color: #ffffff;
  overflow: hidden;
  border-bottom: 2px solid;
  animation: theme-colors 4s ease-in-out infinite;
  box-shadow: 0 0 10px var(--neon-primary), 0 0 20px var(--neon-primary), 0 0 30px var(--neon-primary), inset 0 0 20px rgba(38, 169, 224, 0.1); /* Using primary color for rgba */
  z-index: 1001;
  height: var(--marquee-height-desktop); /* Desktop height */
  display: flex;
  align-items: center;
}
.marquee-container {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 10px 20px;
}
.marquee-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  z-index: 2;
  position: relative;
}
.marquee-icon-emoji {
  font-size: 24px;
  display: inline-block;
  animation: marquee-pulse 2s ease-in-out infinite, text-glow-flow 3s ease-in-out infinite alternate;
  text-shadow: 0 0 5px var(--neon-primary), 0 0 10px var(--neon-primary), 0 0 15px var(--neon-primary);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}
.marquee-wrapper {
  flex: 1;
  overflow: hidden;
  position: relative;
}
.marquee-content {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  animation: marquee-scroll 30s linear infinite;
  gap: 30px;
}
.marquee-text {
  font-size: 16px;
  font-weight: 600;
  color: #ffffff;
  text-decoration: none;
  text-shadow: 0 0 5px var(--neon-primary), 0 0 10px var(--neon-primary), 0 0 15px var(--neon-primary);
  line-height: 1.5;
  display: inline-block;
  vertical-align: middle;
  animation: text-glow-flow 3s ease-in-out infinite alternate;
  cursor: pointer;
  transition: all 0.3s ease;
}
.marquee-text:hover {
  text-shadow: 0 0 10px var(--neon-primary), 0 0 20px var(--neon-primary), 0 0 30px var(--neon-primary), 0 0 40px var(--neon-primary);
  transform: scale(1.05);
  color: #ffffff;
}
.marquee-separator {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.6);
  margin: 0 15px;
  text-shadow: 0 0 3px var(--neon-primary), 0 0 6px var(--neon-primary);
}

/* Header Section */
.site-header {
  position: fixed;
  top: var(--marquee-height-desktop); /* Position below marquee */
  left: 0;
  width: 100%;
  z-index: 1000;
}

.header-top {
  background: linear-gradient(135deg, var(--dark-bg-color), var(--dark-bg-color-light));
  border-bottom: 2px solid;
  animation: theme-colors 4s ease-in-out infinite; /* Dynamic border color */
  box-shadow: 0 0 10px var(--neon-primary), 0 0 20px var(--neon-primary), inset 0 0 15px rgba(38, 169, 224, 0.1); /* Using primary color for rgba */
  min-height: var(--header-top-height-desktop);
  display: flex; /* Ensure flex for container */
  align-items: center;
}

.header-container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px; /* Padding for logo and buttons */
  height: 100%; /* Ensure container fills header-top height */
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: #FFFFFF; /* LOGO no neon effect */
  text-decoration: none;
  display: block;
  flex-shrink: 0;
  padding: 10px 0; /* Add some padding to logo */
  line-height: 1;
}

.logo img {
  display: block;
  max-width: 100%;
  height: auto;
  max-height: 40px; /* Desktop logo height */
}

.desktop-nav-buttons {
  display: flex; /* Display on desktop */
  gap: 10px;
  flex-shrink: 0;
}

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

.main-nav {
  background: linear-gradient(135deg, var(--dark-bg-color-dark), var(--dark-bg-color));
  border-top: 2px solid;
  border-bottom: 2px solid;
  animation: theme-colors 5s ease-in-out infinite reverse; /* Different animation for contrast */
  box-shadow: 0 0 10px var(--neon-secondary), 0 0 20px var(--neon-secondary), inset 0 0 15px rgba(0, 255, 255, 0.1); /* Using secondary neon color for rgba */
  width: 100%;
  display: flex; /* Display on desktop */
  min-height: var(--main-nav-height-desktop);
  align-items: center;
}

.nav-container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: center; /* Center nav links on desktop */
  align-items: center;
  padding: 10px 20px;
  gap: 25px;
}

.nav-link {
  color: #FFFFFF;
  font-weight: 500;
  padding: 8px 0;
  transition: color 0.3s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--neon-primary);
  text-shadow: 0 0 5px var(--neon-primary);
}

.hamburger-menu {
  display: none; /* Hidden on desktop */
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  position: relative;
  z-index: 1002; /* Above logo and mobile menu overlay */
}

.hamburger-menu .bar {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--neon-primary);
  margin: 5px 0;
  transition: all 0.3s ease-in-out;
  box-shadow: 0 0 5px var(--neon-primary);
}

.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);
}

/* Buttons */
.btn {
  position: relative;
  background: linear-gradient(135deg, var(--login-color), #FF8C00); /* Use login color and a vibrant orange */
  padding: 12px 20px;
  color: #ffffff;
  text-decoration: none;
  border-radius: 5px;
  border: 2px solid;
  animation: theme-colors 4s ease-in-out infinite; /* Dynamic border color */
  text-shadow: 0 0 5px #ffffff, 0 0 10px var(--login-color);
  transition: all 0.3s ease;
  font-weight: bold;
  white-space: nowrap;
  text-align: center;
}

.btn:hover {
  animation-duration: 2s;
  transform: translateY(-2px);
  box-shadow: 0 0 15px var(--login-color), 0 0 30px var(--login-color), inset 0 0 15px rgba(234, 124, 7, 0.3); /* Using login color for rgba */
}

/* Footer Section */
.site-footer {
  background-color: var(--dark-bg-color); /* Dark background for footer */
  color: #ccc;
  padding: 40px 0 20px;
  font-size: 14px;
}

.site-footer h4 {
  color: var(--primary-color); /* Use primary color for footer headings */
  font-size: 16px;
  margin-bottom: 15px;
  position: relative;
}

.site-footer h4::after {
  content: '';
  display: block;
  width: 30px;
  height: 2px;
  background-color: var(--primary-color);
  margin-top: 5px;
}

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

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

.site-footer ul li a {
  color: #ccc;
  transition: color 0.3s ease;
}

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

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.footer-top {
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-top .footer-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.footer-logo {
  font-size: 22px;
  font-weight: bold;
  color: #FFFFFF;
  margin-bottom: 15px;
  display: block;
}

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

.payment-icons, .game-providers-icons, .social-media-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 8px; /* Consistent gap for all icon sections */
  width: 100%;
}

.payment-icons img, .game-providers-icons img, .social-media-icons img {
  max-height: 50px;
  height: auto;
  width: auto;
  filter: grayscale(100%) brightness(0.8); /* Slightly dim icons for dark footer */
  transition: filter 0.3s ease;
}

.payment-icons img:hover, .game-providers-icons img:hover, .social-media-icons img:hover {
  filter: grayscale(0%) brightness(1); /* Colorize on hover */
}

.footer-middle {
  padding: 30px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-middle .footer-container {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.game-providers-section, .social-media-section {
  width: 100%;
}

.copyright {
  text-align: center;
  margin-top: 20px;
  color: #888;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  /* Marquee Mobile */
  .marquee-section {
    height: var(--marquee-height-mobile); /* Mobile height */
    padding: 0px 0px;
  }
  .marquee-container {
    gap: 10px;
    padding: 0px 5px;
  }
  .marquee-icon {
    width: 20px;
    height: 20px;
  }
  .marquee-icon-emoji {
    font-size: 14px;
  }
  .marquee-text {
    font-size: 14px;
  }
  .marquee-separator {
    font-size: 14px;
    margin: 0 10px;
  }
  .marquee-content {
    gap: 20px;
    animation: marquee-scroll 25s linear infinite;
  }

  /* Header Mobile */
  .site-header {
    top: var(--marquee-height-mobile); /* Position below mobile marquee */
  }

  .header-top {
    min-height: var(--header-top-height-mobile);
  }

  .header-container {
    padding: 0 15px; /* Smaller padding for mobile */
  }

  .hamburger-menu {
    display: block; /* Show hamburger on mobile */
    order: 0; /* Leftmost */
  }

  .logo {
    flex: 1 !important; /* Take remaining space */
    display: flex !important;
    justify-content: center !important; /* Center logo */
    align-items: center !important;
    font-size: 20px;
    padding: 0;
  }

  .logo img {
    max-height: 35px; /* Mobile logo height */
  }

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

  .mobile-nav-buttons {
    display: flex !important; /* Show mobile buttons */
    justify-content: center;
    align-items: center;
    padding: 10px 15px;
    background: linear-gradient(135deg, var(--dark-bg-color-light), var(--dark-bg-color-dark));
    border-bottom: 1px solid;
    animation: theme-colors 4s ease-in-out infinite reverse;
    box-shadow: 0 0 8px var(--neon-secondary), 0 0 15px var(--neon-secondary), inset 0 0 10px rgba(0, 255, 255, 0.1); /* Using secondary neon color for rgba */
    min-height: var(--mobile-buttons-height-mobile);
    width: 100%;
    box-sizing: border-box;
    gap: 10px;
    flex-wrap: nowrap; /* Ensure buttons stay in one line */
  }

  .mobile-nav-buttons .btn {
    flex: 1;
    min-width: 0;
    max-width: calc(50% - 5px); /* Two buttons, with 10px gap */
    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 {
    display: none; /* Hidden by default on mobile */
    flex-direction: column; /* Vertical menu */
    position: fixed;
    top: var(--header-offset); /* Below header and mobile buttons */
    left: 0;
    width: 70%; /* Side menu width */
    height: calc(100vh - var(--header-offset)); /* Full height below header */
    background: var(--dark-bg-color-dark);
    box-shadow: 2px 0 15px rgba(0, 0, 0, 0.5);
    transform: translateX(-100%); /* Off-screen by default */
    transition: transform 0.3s ease-in-out;
    z-index: 1000; /* Above overlay, below hamburger */
    border-right: 2px solid;
    animation: theme-colors 5s ease-in-out infinite; /* Neon border */
    overflow-y: auto; /* Enable scrolling for long menus */
  }

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

  .nav-container {
    flex-direction: column;
    align-items: flex-start; /* Align menu items to left */
    padding: 20px;
    gap: 15px;
    width: 100%;
    max-width: none; /* No max-width on mobile */
  }

  .nav-link {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .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: rgba(0, 0, 0, 0.7);
    z-index: 999; /* Below menu, above content */
  }

  .mobile-menu-overlay.active {
    display: block; /* Show when active */
  }

  /* Footer Mobile */
  .footer-top .footer-container {
    grid-template-columns: 1fr; /* Single column on mobile */
    gap: 20px;
  }
}

/* WCAG AA contrast for text on dark background */
.marquee-text, .marquee-icon-emoji, .marquee-separator,
.logo, .nav-link, .btn,
.site-footer h4, .site-footer ul li a, .footer-logo, .footer-description, .copyright {
  /* All these elements are light text on dark backgrounds, ensuring good contrast. */
  /* Neon colors also provide high contrast. */
}

/* Mobile overflow prevention */
.page-content img {
  max-width: 100% !important;
  height: auto !important;
  display: block;
}
.page-content {
  overflow-x: hidden;
  max-width: 100%;
}
body {
  overflow-x: hidden;
}
/* 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;
  }
}