:root {
  --primary-color: #26A9E0; /* 淡蓝色 */
  --secondary-color: #FFFFFF;
  --text-color: #FFFFFF;
  --dark-bg: #0a0a0a;
  --dark-gradient-1: linear-gradient(135deg, #0a0a0a, #1a1a2e, #16213e);
  --dark-gradient-2: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460);

  /* Neon Colors - based on primary/secondary, with vibrant accents */
  --neon-primary: var(--primary-color); /* #26A9E0 */
  --neon-secondary: #ff00ff; /* Magenta */
  --neon-accent: #00ffff; /* Cyan */

  /* Header Offset - calculated based on estimated heights */
  --marquee-height-desktop: 45px;
  --header-top-height-desktop: 60px;
  --main-nav-height-desktop: 50px;
  --header-offset: calc(var(--marquee-height-desktop) + var(--header-top-height-desktop) + var(--main-nav-height-desktop)); /* Desktop: 45 + 60 + 50 = 155px */
}

@media (max-width: 768px) {
  :root {
    --marquee-height-mobile: 40px;
    --header-top-height-mobile: 50px;
    --mobile-buttons-height-mobile: 50px; /* Assuming buttons section is around 50px high */
    --header-offset: calc(var(--marquee-height-mobile) + var(--header-top-height-mobile) + var(--mobile-buttons-height-mobile)); /* Mobile: 40 + 50 + 50 = 140px */
  }
}

/* Base Styles */
body {
  margin: 0;
  font-family: 'Arial', sans-serif;
  color: var(--text-color);
  background-color: var(--dark-bg);
  line-height: 1.6;
  padding-top: var(--header-offset); /* Ensure content is not hidden by fixed header */
  overflow-x: hidden; /* Prevent horizontal scroll */
}

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

a:hover {
  color: var(--primary-color);
}

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

/* Neon Glow Animations (as provided in prompt) */
@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 hue-spin {
  0% { filter: hue-rotate(0deg); box-shadow: 0 0 10px var(--neon-primary), 0 0 20px var(--neon-primary); }
  100% { filter: hue-rotate(360deg); box-shadow: 0 0 10px var(--neon-primary), 0 0 20px var(--neon-primary); }
}
@keyframes alternate-colors {
  0% { border-color: var(--neon-primary); box-shadow: 0 0 10px var(--neon-primary), 0 0 20px var(--neon-primary); }
  100% { border-color: var(--neon-secondary); box-shadow: 0 0 10px var(--neon-secondary), 0 0 20px var(--neon-secondary); }
}
@keyframes gradient-flow {
  0% { background-position: 0% 50%; box-shadow: 0 0 10px #ff0000, 0 0 20px #ff8000; }
  50% { background-position: 100% 50%; box-shadow: 0 0 10px #00ffff, 0 0 20px #0000ff; }
  100% { background-position: 0% 50%; box-shadow: 0 0 10px #ff0000, 0 0 20px #ff8000; }
}
@keyframes random-glow {
  0% { border-color: #ff00ff; box-shadow: 0 0 20px #ff00ff; }
  20% { border-color: #00ffff; box-shadow: 0 0 20px #00ffff; }
  40% { border-color: #ffff00; box-shadow: 0 0 20px #ffff00; }
  60% { border-color: #00ff00; box-shadow: 0 0 20px #00ff00; }
  80% { border-color: #ff0000; box-shadow: 0 0 20px #ff0000; }
  100% { border-color: #ff00ff; box-shadow: 0 0 20px #ff00ff; }
}
@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 neon-flicker {
  0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% { opacity: 1; box-shadow: 0 0 10px currentColor, 0 0 20px currentColor, 0 0 30px currentColor, inset 0 0 15px currentColor; }
  20%, 24%, 55% { opacity: 0.8; box-shadow: 0 0 5px currentColor, 0 0 10px currentColor, 0 0 15px currentColor, inset 0 0 10px currentColor; }
}
@keyframes pulse-glow {
  from { box-shadow: 0 0 5px currentColor, 0 0 10px currentColor; }
  to { box-shadow: 0 0 15px currentColor, 0 0 30px currentColor, 0 0 45px currentColor; }
}
@keyframes led-blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0.3; }
}
@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; }
}

/* Marquee Section Styles */
.marquee-section {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: var(--dark-gradient-1);
  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(var(--neon-primary), 0.1);
  z-index: 1001;
  height: var(--marquee-height-desktop); /* Fixed height for desktop */
  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: 0 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));
}
@keyframes marquee-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.15); opacity: 0.9; }
}
.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);
}
@keyframes marquee-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* Header Styles */
.site-header {
  position: fixed;
  top: var(--marquee-height-desktop); /* Position below marquee */
  left: 0;
  width: 100%;
  z-index: 1000;
  min-height: calc(var(--header-top-height-desktop) + var(--main-nav-height-desktop));
  display: flex;
  flex-direction: column; /* Default desktop layout */
}

/* Header Top Area */
.header-top {
  background: var(--dark-gradient-1);
  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 10px rgba(var(--neon-primary), 0.1);
  padding: 15px 0;
  display: flex; /* For hamburger and logo on mobile */
  align-items: center;
  min-height: var(--header-top-height-desktop); /* Fixed height for desktop top bar */
}
.header-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

/* Logo (No Neon Effect) */
.logo {
  color: var(--secondary-color); /* White for contrast */
  font-size: 28px;
  font-weight: bold;
  text-decoration: none;
  /* NO neon text-shadow or box-shadow for logo */
  display: block; /* Ensure it's not inline for flex alignment */
}
.logo img {
  display: block;
  max-width: 100%;
  height: auto;
  max-height: 50px;
}

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

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

/* Main Navigation (Desktop) */
.main-nav {
  background: var(--dark-gradient-2); /* Different dark gradient for contrast */
  border-top: 2px solid;
  border-bottom: 2px solid;
  animation: alternate-colors 4s ease-in-out infinite; /* Different dynamic border color */
  box-shadow: 
    0 0 10px var(--neon-secondary), 
    0 0 20px var(--neon-secondary), 
    inset 0 0 10px rgba(var(--neon-secondary), 0.1);
  padding: 10px 0;
  display: flex; /* Desktop default: flex row */
  min-height: var(--main-nav-height-desktop); /* Fixed height for desktop nav bar */
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  justify-content: center; /* Center nav items on desktop */
  align-items: center;
  padding: 0 20px;
  flex-wrap: wrap; /* Allow wrapping on larger menus */
}
.nav-link {
  color: var(--secondary-color);
  font-size: 16px;
  padding: 8px 15px;
  margin: 0 5px;
  white-space: nowrap;
  transition: all 0.3s ease;
  border-radius: 3px;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  /* Regular style for nav links, no neon */
}
.nav-link:hover {
  color: var(--primary-color);
  background-color: rgba(var(--primary-color), 0.1);
}

/* Buttons */
.btn {
  position: relative;
  background: linear-gradient(135deg, var(--neon-primary), var(--neon-secondary));
  padding: 12px 30px;
  color: #ffffff;
  text-decoration: none;
  border-radius: 5px;
  border: 2px solid;
  animation: theme-colors 4s ease-in-out infinite;
  text-shadow: 0 0 5px #ffffff, 0 0 10px var(--neon-primary);
  transition: all 0.3s ease;
  white-space: nowrap; /* Prevent button text from wrapping on desktop */
  cursor: pointer;
}
.btn:hover {
  animation-duration: 2s;
  transform: translateY(-2px);
}

/* Hamburger Menu (hidden by default on desktop) */
.hamburger-menu {
  display: none; /* Hidden on desktop */
  width: 30px;
  height: 24px;
  position: relative;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
  z-index: 1002;
  transition: all 0.3s ease;
  padding: 5px; /* Added padding for better click area */
  border-radius: 3px;
  border: 2px solid transparent; /* Placeholder for glow */
  animation: theme-colors 4s ease-in-out infinite; /* Dynamic glow */
}
.hamburger-menu .bar {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--secondary-color);
  border-radius: 5px;
  transition: all 0.3s ease;
  text-shadow: 0 0 5px var(--neon-primary), 0 0 10px var(--neon-primary); /* Neon effect for bars */
}
.hamburger-menu.active .bar:nth-child(1) {
  transform: translateY(10px) rotate(45deg);
}
.hamburger-menu.active .bar:nth-child(2) {
  opacity: 0;
}
.hamburger-menu.active .bar:nth-child(3) {
  transform: translateY(-10px) rotate(-45deg);
}

/* Mobile Menu Overlay (hidden by default) */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: 999; /* Below hamburger and main nav */
  transition: opacity 0.3s ease;
  opacity: 0;
}
.mobile-menu-overlay.active {
  display: block;
  opacity: 1;
}

/* Footer Styles (Regular, no neon) */
.site-footer {
  background-color: #1a1a2e; /* Dark background for footer */
  color: #c0c0c0;
  padding: 40px 0 20px 0;
  font-size: 14px;
}
.site-footer a {
  color: #c0c0c0;
}
.site-footer a:hover {
  color: var(--primary-color);
}
.footer-top {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 30px;
  margin-bottom: 30px;
}
.site-footer .footer-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.footer-col h4 {
  color: var(--secondary-color);
  font-size: 16px;
  margin-bottom: 15px;
}
.footer-logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  display: block;
  margin-bottom: 15px;
}
.footer-description {
  line-height: 1.6;
  word-wrap: break-word;
  overflow-wrap: break-word;
}
.footer-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-nav-list li {
  margin-bottom: 8px;
}
.payment-methods .payment-icons,
.game-providers-section .game-providers-icons,
.social-media-section .social-media-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 8px; /* Consistent gap for icons */
  width: 100%;
}
.payment-methods .payment-icons img,
.game-providers-section .game-providers-icons img,
.social-media-section .social-media-icons img {
  max-height: 50px;
  height: auto;
  width: auto;
  filter: grayscale(100%) brightness(150%); /* Make icons fit dark theme */
  opacity: 0.8;
  transition: opacity 0.3s ease, filter 0.3s ease;
}
.payment-methods .payment-icons img:hover,
.game-providers-section .game-providers-icons img:hover,
.social-media-section .social-media-icons img:hover {
  opacity: 1;
  filter: grayscale(0%) brightness(100%);
}

.game-providers-section,
.social-media-section {
  padding: 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 20px;
}
.game-providers-section h4,
.social-media-section h4 {
  margin-bottom: 15px;
}

.footer-bottom {
  padding-top: 20px;
}
.footer-bottom .footer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.copyright {
  margin-bottom: 10px;
}
.footer-legal-nav {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 20px;
}
.footer-legal-nav li {
  white-space: nowrap;
}


/* Mobile Responsive Styles */
@media (max-width: 768px) {
  /* Header Offset for mobile */
  :root {
    --header-offset: calc(var(--marquee-height-mobile) + var(--header-top-height-mobile) + var(--mobile-buttons-height-mobile)); /* Mobile: 40 + 50 + 50 = 140px */
  }

  .marquee-section {
    height: var(--marquee-height-mobile); /* Mobile marquee height */
  }
  .marquee-container {
    gap: 10px;
    padding: 0 5px;
  }
  .marquee-icon {
    width: 25px;
    height: 25px;
  }
  .marquee-icon-emoji {
    font-size: 16px;
  }
  .marquee-text {
    font-size: 13px;
    padding: 2px 0;
  }
  .marquee-separator {
    font-size: 13px;
    margin: 0 5px;
  }
  .marquee-content {
    gap: 15px;
    animation: marquee-scroll 20s linear infinite; /* Faster scroll on mobile */
  }

  .site-header {
    top: var(--marquee-height-mobile); /* Position below mobile marquee */
    min-height: calc(var(--header-top-height-mobile) + var(--mobile-buttons-height-mobile));
  }

  .header-top {
    padding: 10px 0;
    min-height: var(--header-top-height-mobile); /* Mobile header top height */
  }
  .header-container {
    padding: 0 15px;
    width: 100%;
    max-width: none; /* Crucial: no max-width on mobile containers */
    justify-content: flex-start; /* Align items to start for hamburger */
    position: relative; /* For logo absolute positioning */
  }

  .logo {
    flex: 1 !important; /* Take remaining space */
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    font-size: 20px; /* Smaller logo text on mobile */
    max-width: calc(100% - 60px); /* Account for hamburger menu width */
    position: absolute; /* Absolute position for centering */
    left: 50%;
    transform: translateX(-50%);
  }
  .logo img {
    max-height: 40px; /* Smaller logo image on mobile */
  }

  .hamburger-menu {
    display: flex; /* Visible on mobile */
    margin-right: auto; /* Push logo to center */
    padding: 5px;
  }

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

  .mobile-nav-buttons {
    display: flex !important; /* Always visible on mobile */
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 10px 15px;
    overflow: hidden;
    gap: 10px;
    justify-content: center;
    flex-wrap: nowrap; /* Prevent buttons from wrapping */
    background: var(--dark-gradient-1); /* Match header top background */
    border-bottom: 2px solid;
    animation: theme-colors 4s ease-in-out infinite;
    box-shadow: 
      0 0 5px var(--neon-primary), 
      0 0 10px var(--neon-primary), 
      inset 0 0 5px rgba(var(--neon-primary), 0.1);
    min-height: var(--mobile-buttons-height-mobile); /* Fixed height for mobile buttons bar */
  }
  .mobile-nav-buttons .btn {
    flex: 1;
    min-width: 0;
    max-width: calc(50% - 5px); /* Ensure two buttons fit with gap */
    box-sizing: border-box;
    white-space: normal; /* Allow text wrapping */
    word-wrap: break-word;
    overflow-wrap: break-word;
    padding: 8px 12px; /* Smaller padding */
    font-size: 13px; /* Smaller font size */
    text-align: center;
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    position: fixed;
    top: calc(var(--marquee-height-mobile) + var(--header-top-height-mobile) + var(--mobile-buttons-height-mobile)); /* Position below mobile buttons */
    left: 0;
    width: 80%; /* Menu width */
    max-width: 300px; /* Max width for menu */
    height: calc(100% - var(--header-offset)); /* Full height below header */
    background: var(--dark-gradient-2);
    flex-direction: column; /* Vertical menu */
    padding: 20px 0;
    transform: translateX(-100%); /* Off-screen by default */
    transition: transform 0.3s ease;
    z-index: 1000; /* Above overlay */
    border-right: 2px solid;
    animation: alternate-colors 4s ease-in-out infinite;
    box-shadow: 
      0 0 10px var(--neon-secondary), 
      0 0 20px var(--neon-secondary), 
      inset 0 0 10px rgba(var(--neon-secondary), 0.1);
    overflow-y: auto; /* Enable scrolling for long menus */
  }
  .main-nav.active {
    display: flex; /* Show menu when active */
    transform: translateX(0); /* Slide in */
  }
  .nav-container {
    flex-direction: column; /* Stack nav items vertically */
    padding: 0 15px;
    align-items: flex-start;
    max-width: none; /* Crucial: no max-width on mobile containers */
    width: 100%;
  }
  .nav-link {
    width: 100%;
    padding: 12px 15px;
    margin: 5px 0;
    font-size: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  .nav-link:last-child {
    border-bottom: none;
  }

  .footer-top .footer-container {
    grid-template-columns: 1fr; /* Single column layout for footer on mobile */
  }
  .site-footer .footer-container {
    padding: 0 15px;
  }
  .footer-col {
    margin-bottom: 20px;
  }
  .footer-bottom .footer-container {
    padding: 0 15px;
  }
  .footer-legal-nav {
    flex-direction: column;
    gap: 5px;
  }
  .footer-legal-nav li {
    text-align: center;
  }

  /* Mobile image 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;
  }
}

/* Scrollbar for mobile menu (if needed) */
.main-nav::-webkit-scrollbar {
  width: 8px;
}
.main-nav::-webkit-scrollbar-track {
  background: #1a1a2e;
}
.main-nav::-webkit-scrollbar-thumb {
  background: var(--neon-primary);
  border-radius: 4px;
}
.main-nav::-webkit-scrollbar-thumb:hover {
  background: var(--neon-secondary);
}

/* No scroll for body when menu is open */
body.no-scroll {
  overflow: 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;
  }
}