:root {
  --header-offset: 120px; /* Desktop: Total fixed height (marquee + header) */
  --marquee-h-desktop: 30px;
  --header-top-h-desktop: 40px; /* Logo + desktop buttons */
  --main-nav-h-desktop: 50px; /* Desktop nav links */

  --primary-color: #1A202C;
  --secondary-color: #FFD700;
  --neon-primary: #FFD700; /* Bright gold */
  --neon-secondary: #FF4500; /* Orange-red */
  --neon-accent: #00FFFF; /* Cyan */
}
@media (max-width: 768px) {
  :root {
    --header-offset: 200px; /* Mobile: Total fixed height (marquee + header) */
    --marquee-h-mobile: 35px;
    --header-top-h-mobile: 50px; /* Hamburger + Logo */
    --mobile-nav-buttons-h: 50px; /* Mobile buttons row */
  }
}

/* Base styles */
body {
  margin: 0;
  font-family: 'Arial', sans-serif;
  color: #e0e0e0;
  background-color: #0a0a0a; /* Dark background */
  padding-top: var(--header-offset); /* Total fixed header height */
  overflow-x: hidden; /* Prevent horizontal scroll */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* Neon Dynamic Color 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 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), inset 0 0 10px rgba(255, 215, 0, 0.3); }
  33% { border-color: var(--neon-secondary); box-shadow: 0 0 10px var(--neon-secondary), 0 0 20px var(--neon-secondary), inset 0 0 10px rgba(255, 69, 0, 0.3); }
  66% { border-color: var(--neon-accent); box-shadow: 0 0 10px var(--neon-accent), 0 0 20px var(--neon-accent), inset 0 0 10px rgba(0, 255, 255, 0.3); }
}
@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; }
}
@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 Styles */
.marquee-section {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  min-height: var(--marquee-h-desktop);
  background: linear-gradient(135deg, #0a0a0a, #1a1a2e, #16213e);
  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(255, 215, 0, 0.1);
  z-index: 1001;
  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: 24px;
  height: 24px;
  z-index: 2;
  position: relative;
}
.marquee-icon-emoji {
  font-size: 18px;
  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: 15px;
  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: 15px;
  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 Styles */
.site-header {
  position: fixed;
  top: var(--marquee-h-desktop); /* Below marquee on desktop */
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: transparent; /* Background handled by children */
}

/* Header Top Section */
.header-top {
  min-height: var(--header-top-h-desktop);
  background: linear-gradient(135deg, #0a0a0a, #1a1a2e, #16213e); /* Darker background for top */
  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),
    0 0 30px var(--neon-primary),
    inset 0 0 20px rgba(255, 215, 0, 0.1);
  padding: 5px 0;
  position: relative;
  display: flex;
  align-items: center;
}
.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  width: 100%;
}

/* Logo Styles (NO NEON EFFECTS) */
.logo {
  font-size: 26px;
  font-weight: bold;
  color: #ffffff; /* Regular color, clear contrast */
  text-transform: uppercase;
  text-decoration: none;
  /* No text-shadow, box-shadow, filter for glow/neon */
  display: block;
}
.logo img {
  display: block;
  max-width: 100%;
  height: auto;
  max-height: 40px;
}

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

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

/* Main Navigation (Desktop) */
.main-nav {
  min-height: var(--main-nav-h-desktop);
  background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460); /* Slightly different dark gradient */
  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),
    0 0 30px var(--neon-secondary),
    inset 0 0 20px rgba(255, 69, 0, 0.1);
  width: 100%;
  display: flex; /* Desktop default: flex */
  align-items: center;
  padding: 0;
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 20px;
  flex-wrap: wrap; /* Allow wrapping on smaller desktop screens */
  width: 100%;
}
.nav-link {
  color: #e0e0e0; /* Regular text color */
  font-size: 15px;
  font-weight: 500;
  padding: 8px 15px;
  transition: color 0.3s ease, background-color 0.3s ease;
  text-transform: uppercase;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--neon-primary); /* Hover with neon color */
  background-color: rgba(255, 215, 0, 0.1);
  border-radius: 4px;
}

/* Hamburger Menu (Hidden by default on desktop) */
.hamburger-menu {
  display: none; /* Hidden on desktop */
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 30px;
  position: relative;
  z-index: 1001; /* Above mobile menu overlay */
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
}
.hamburger-menu span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: #ffffff;
  transition: all 0.3s ease;
  box-shadow: 0 0 5px var(--neon-primary), 0 0 10px var(--neon-primary); /* Neon glow for hamburger */
}
.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); }

/* Buttons (Neon Style) */
.btn {
  position: relative;
  background: linear-gradient(135deg, var(--neon-primary), var(--neon-secondary));
  padding: 10px 18px;
  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;
  font-weight: bold;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 160px; /* Limit button width on desktop */
  font-size: 14px;
  text-align: center;
}
.btn:hover {
  animation-duration: 2s;
  transform: translateY(-2px);
  box-shadow: 
    0 0 15px var(--neon-primary),
    0 0 30px var(--neon-primary),
    inset 0 0 15px rgba(255, 215, 0, 0.4);
}

/* Footer Section Styles */
.site-footer {
  background-color: var(--primary-color); /* Dark blue-gray */
  color: #e0e0e0;
  padding-top: 40px;
  font-size: 14px;
  line-height: 1.6;
}
.site-footer h4 {
  color: var(--secondary-color); /* Gold for titles */
  font-size: 18px;
  margin-bottom: 20px;
  position: relative;
  font-weight: bold;
}
.site-footer h4::after {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background-color: var(--secondary-color);
  margin-top: 5px;
}

.footer-top {
  padding-bottom: 30px;
}
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}
.footer-col {
  margin-bottom: 0;
}
.footer-logo {
  font-size: 24px;
  font-weight: bold;
  color: #ffffff;
  text-transform: uppercase;
  margin-bottom: 15px;
  display: block;
  text-decoration: none;
}
.footer-description {
  word-wrap: break-word;
  overflow-wrap: break-word;
  line-height: 1.6;
  color: #cccccc;
}
.footer-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-nav-list li {
  margin-bottom: 8px;
}
.footer-nav-list a {
  color: #cccccc;
  transition: color 0.3s ease;
}
.footer-nav-list a:hover {
  color: var(--secondary-color);
}

/* Payment Methods, Game Providers, Social Media */
.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; /* Adjusted for tighter spacing */
  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;
  object-fit: contain;
}

.footer-middle {
  padding: 20px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 30px;
}
.game-providers-section, .social-media-section {
  margin-bottom: 20px; /* Spacing between sections */
}
.game-providers-section h4, .social-media-section h4 {
  text-align: left;
}

.footer-bottom {
  padding: 20px 0;
  text-align: center;
}
.copyright-text {
  color: #aaaaaa;
  margin: 0;
}

/* Mobile responsive styles */
@media (max-width: 768px) {
  /* Marquee mobile adaptation */
  .marquee-section {
    min-height: var(--marquee-h-mobile);
    padding: 0px !important;
  }
  .marquee-container {
    gap: 10px !important;
    padding: 0 10px;
  }
  .marquee-icon {
    width: 20px !important;
    height: 20px !important;
  }
  .marquee-icon-emoji {
    font-size: 14px !important;
  }
  .marquee-text {
    font-size: 13px !important;
  }
  .marquee-separator {
    font-size: 13px !important;
    margin: 0 8px !important;
  }
  .marquee-content {
    gap: 20px;
    animation: marquee-scroll 25s linear infinite;
  }

  /* Header mobile adaptation */
  .site-header {
    top: var(--marquee-h-mobile); /* Below mobile marquee */
  }
  .header-top {
    min-height: var(--header-top-h-mobile);
    padding: 0;
  }
  .header-container {
    padding: 0 15px;
    justify-content: space-between;
    position: relative; 
    min-height: var(--header-top-h-mobile);
  }
  .hamburger-menu {
    display: flex;
    order: 1;
    margin-right: 10px;
  }
  .logo {
    order: 2;
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    font-size: 20px;
    margin: 0;
  }
  .logo img {
    max-height: 35px; /* Smaller logo for mobile */
  }
  .desktop-nav-buttons {
    display: none; /* Hide desktop buttons on mobile */
  }

  /* Mobile Navigation Buttons (Always visible below header-top) */
  .mobile-nav-buttons {
    display: flex !important; /* Show mobile buttons */
    position: fixed;
    top: calc(var(--marquee-h-mobile) + var(--header-top-h-mobile)); /* Position below header-top */
    left: 0;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 10px 15px;
    overflow: hidden;
    gap: 10px;
    justify-content: center;
    flex-wrap: nowrap; /* Ensure buttons stay on one line */
    min-height: var(--mobile-nav-buttons-h);
    background: linear-gradient(135deg, #0a0a0a, #1a1a2e, #16213e); /* Match header 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 10px rgba(255, 215, 0, 0.1);
    z-index: 999; /* Below main nav but above content */
  }
  .mobile-nav-buttons .btn {
    flex: 1;
    min-width: 0;
    max-width: calc(50% - 5px); /* Two buttons with 10px gap */
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
    padding: 8px 12px;
    font-size: 13px;
    text-align: center;
  }

  /* Main Navigation (Mobile - hidden by default, shown by JS) */
  .main-nav {
    display: none; /* Hidden by default */
    position: fixed;
    top: var(--header-offset); /* Position below all fixed elements */
    left: 0;
    width: 80%; /* Sidebar width */
    max-width: 300px;
    height: calc(100vh - var(--header-offset)); /* Full height minus fixed headers */
    background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460);
    flex-direction: column;
    padding: 20px 0;
    transform: translateX(-100%); /* Off-screen by default */
    transition: transform 0.3s ease-in-out;
    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 20px rgba(255, 69, 0, 0.1);
    z-index: 1000; /* Above overlay */
    overflow-y: auto; /* Enable scrolling for long menus */
  }
  .main-nav.active {
    display: flex; /* Show when active */
    transform: translateX(0); /* Slide in */
  }
  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 15px;
    max-width: none; /* No max-width on mobile */
    width: 100%;
  }
  .nav-link {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  .nav-link:last-child {
    border-bottom: none;
  }

  /* 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, 0.7);
    z-index: 999; /* Below main nav */
  }
  .mobile-menu-overlay.active {
    display: block;
  }

  /* Footer mobile adaptation */
  .site-footer {
    padding-top: 30px;
  }
  .footer-container {
    grid-template-columns: 1fr; /* Single column layout */
    gap: 20px;
    padding: 0 15px;
  }
  .footer-col {
    margin-bottom: 0;
  }
  .footer-logo {
    font-size: 20px;
  }
  .site-footer h4 {
    font-size: 16px;
  }
  .payment-methods .payment-icons,
  .game-providers-section .game-providers-icons,
  .social-media-section .social-media-icons {
    gap: 5px; /* Tighter on mobile */
  }
  .payment-methods .payment-icons img,
  .game-providers-section .game-providers-icons img,
  .social-media-section .social-media-icons img {
    max-height: 40px; /* Smaller icons on mobile */
  }
  .footer-middle {
    margin-top: 20px;
  }
  .copyright-text {
    font-size: 12px;
  }

  /* Content overflow fix for mobile */
  .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;
  }
}
/* 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;
  }
}