:root {
    --primary-color: #26A9E0;
    --secondary-color: #FFFFFF;
    --login-color: #EA7C07;
    --black-color: #000000;

    /* Neon colors based on primary/secondary, with some vibrant options */
    --neon-primary: #00ffff; /* Cyan */
    --neon-secondary: #ff00ff; /* Magenta */
    --neon-accent: #ffff00; /* Yellow */
    --neon-dark-bg: #0a0a0a; /* Dark background */
    --neon-dark-bg-gradient-start: #1a1a2e;
    --neon-dark-bg-gradient-end: #16213e;

    /* Header offset calculation */
    --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: Marquee + Header Top + Main Nav */
  }

  @media (max-width: 768px) {
    :root {
      --marquee-height-mobile: 25px;
      --header-top-height-mobile: 50px;
      --mobile-nav-buttons-height-mobile: 50px; /* Approx height including padding/margin */
      --header-offset: calc(var(--marquee-height-mobile) + var(--header-top-height-mobile) + var(--mobile-nav-buttons-height-mobile)); /* Mobile: Marquee + Header Top + Mobile Buttons */
    }
  }

  /* Global styles */
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%;
  }

  body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--secondary-color);
    background-color: var(--black-color); /* Dark background for the page */
    padding-top: var(--header-offset); /* Fixed header offset */
    overflow-x: hidden; /* Prevent horizontal scroll on body */
  }

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

  ul {
    list-style: none;
  }

  /* Neon Glow 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); }
    100% { filter: hue-rotate(360deg); }
  }

  @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%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
  }

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

  /* Marquee Section */
  .marquee-section {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(135deg, var(--neon-dark-bg), var(--neon-dark-bg-gradient-start), var(--neon-dark-bg-gradient-end));
    color: var(--secondary-color);
    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(0, 255, 255, 0.1);
    z-index: 1001;
    height: var(--marquee-height-desktop);
  }

  .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));
  }

  @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: var(--secondary-color);
    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: var(--secondary-color);
  }

  .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%); }
  }

  /* Site Header */
  .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(--neon-dark-bg), var(--neon-dark-bg-gradient-start), var(--neon-dark-bg-gradient-end));
    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(0, 255, 255, 0.1);
    width: 100%;
    min-height: var(--header-top-height-desktop); /* Ensure minimum height */
    display: flex;
    align-items: center;
  }

  .header-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
  }

  .logo {
    font-size: 28px;
    font-weight: bold;
    color: var(--secondary-color); /* Regular color for logo, no neon */
    text-decoration: none;
    flex-shrink: 0;
    display: block; /* Ensure visibility */
  }

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

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

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

  .btn {
    position: relative;
    background: linear-gradient(135deg, var(--neon-primary), var(--neon-secondary));
    padding: 12px 25px;
    color: var(--secondary-color);
    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 var(--secondary-color),
      0 0 10px var(--neon-primary);
    transition: all 0.3s ease;
    font-weight: 600;
    font-size: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
  }

  .btn:hover {
    animation-duration: 2s; /* Faster color change on hover */
    transform: translateY(-2px) scale(1.02);
    box-shadow: 
      0 0 15px var(--neon-primary),
      0 0 30px var(--neon-primary),
      0 0 45px var(--neon-primary),
      inset 0 0 15px rgba(0, 255, 255, 0.4);
  }

  .main-nav {
    background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460); /* Slightly different dark background */
    border-top: 2px solid;
    border-bottom: 2px solid;
    animation: alternate-colors 4s ease-in-out infinite; /* 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, 0, 255, 0.1);
    width: 100%;
    display: flex; /* Visible on desktop */
    align-items: center;
    min-height: var(--main-nav-height-desktop);
  }

  .main-nav .nav-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    padding: 10px 20px;
    gap: 25px;
  }

  .nav-link {
    font-size: 16px;
    font-weight: 500;
    color: var(--secondary-color); /* Regular color for nav links */
    padding: 5px 0;
    position: relative;
    transition: color 0.3s ease;
  }

  .nav-link:hover {
    color: var(--neon-primary); /* Highlight on hover */
  }

  .hamburger-menu {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    position: relative;
    z-index: 1002; /* Above logo */
    animation: theme-colors 4s ease-in-out infinite; /* Dynamic border color */
    box-shadow: 
      0 0 5px var(--neon-accent),
      0 0 10px var(--neon-accent);
    border-radius: 3px;
    width: 40px;
    height: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
  }

  .hamburger-menu span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--neon-accent);
    border-radius: 2px;
    transition: all 0.3s ease-in-out;
    box-shadow: 0 0 5px var(--neon-accent);
  }

  .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 {
    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;
    transition: opacity 0.3s ease;
    opacity: 0;
  }

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

  /* Footer Section */
  .site-footer {
    background: var(--black-color);
    color: var(--secondary-color);
    padding-top: 40px;
    font-size: 14px;
  }

  .site-footer h4 {
    color: var(--primary-color);
    font-size: 18px;
    margin-bottom: 15px;
    font-weight: bold;
  }

  .site-footer ul {
    padding: 0;
  }

  .site-footer ul li {
    margin-bottom: 10px;
  }

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

  .footer-top {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    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-about .footer-logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--secondary-color);
    margin-bottom: 15px;
    display: block;
  }

  .footer-description {
    line-height: 1.6;
    word-wrap: break-word; /* Ensure full text display */
    overflow-wrap: break-word;
  }

  .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;
    object-fit: contain;
  }

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

  .game-providers-section, .social-media-section, .payment-methods-section {
    max-width: 1200px;
    margin: 0 auto 20px auto;
    padding: 0 20px;
  }

  .footer-bottom {
    padding: 20px 0;
  }

  .footer-bottom .footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }

  .footer-legal-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
  }

  .footer-legal-links a:hover {
    color: var(--primary-color);
  }

  /* Responsive adjustments */
  @media (max-width: 768px) {
    /* Header Offset for mobile */
    .site-header {
      top: var(--marquee-height-mobile);
    }
    body {
      padding-top: var(--header-offset);
    }

    /* Marquee mobile adjustments */
    .marquee-section {
      height: var(--marquee-height-mobile);
      padding: 0;
    }
    .marquee-container {
      gap: 10px;
      padding: 0 5px;
    }
    .marquee-icon {
      width: 25px;
      height: 25px;
    }
    .marquee-icon-emoji {
      font-size: 18px;
    }
    .marquee-text {
      font-size: 14px;
    }
    .marquee-separator {
      font-size: 14px;
      margin: 0 8px;
    }
    .marquee-content {
      gap: 20px;
      animation-duration: 25s;
    }

    /* Header Top - Hamburger & Logo */
    .header-top {
      min-height: var(--header-top-height-mobile);
    }
    .header-container {
      padding: 10px 15px;
      justify-content: flex-start; /* Adjust for hamburger menu */
    }
    .hamburger-menu {
      display: flex; /* Visible on mobile */
      margin-right: 15px;
    }
    .logo {
      flex: 1 !important; /* Take remaining space */
      display: flex !important; /* For centering content */
      justify-content: center !important; /* Center logo */
      align-items: center !important;
      font-size: 24px;
    }
    .logo img {
      max-height: 35px; /* Mobile logo height */
    }
    .desktop-nav-buttons {
      display: none; /* Hidden on mobile */
    }

    /* Mobile Nav Buttons (always visible) */
    .mobile-nav-buttons {
      display: flex !important; /* 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; /* Ensure buttons stay in one line */
      background: linear-gradient(135deg, var(--neon-dark-bg), var(--neon-dark-bg-gradient-start), var(--neon-dark-bg-gradient-end));
      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);
    }
    .mobile-nav-buttons .btn {
      flex: 1;
      min-width: 0;
      max-width: calc(50% - 5px); /* Account for 10px gap */
      padding: 8px 12px;
      font-size: 13px;
      text-align: center;
      white-space: normal; /* Allow text to wrap */
      word-wrap: break-word;
      overflow-wrap: break-word;
    }

    /* Main Navigation (Hamburger Menu content) */
    .main-nav {
      display: none; /* Hidden by default, shown with JS */
      flex-direction: column;
      position: fixed;
      top: var(--header-offset); /* Position below fixed header elements */
      left: 0;
      width: 80%; /* Menu width */
      max-width: 300px;
      height: calc(100vh - var(--header-offset)); /* Full height below header */
      overflow-y: auto;
      transform: translateX(-100%); /* Slide out of view */
      transition: transform 0.3s ease;
      z-index: 1000; /* Above overlay */
      padding: 20px 0;
    }
    .main-nav.active {
      display: flex; /* Show menu when active */
      transform: translateX(0); /* Slide into view */
    }
    .main-nav .nav-container {
      flex-direction: column;
      padding: 0 15px;
      align-items: flex-start;
      gap: 15px;
      max-width: none; /* Remove max-width for mobile */
      width: 100%;
    }
    .nav-link {
      width: 100%;
      padding: 10px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .nav-link:last-child {
      border-bottom: none;
    }

    /* 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;
    }
    body.no-scroll {
      overflow: hidden;
    }

    /* Footer mobile adjustments */
    .footer-container {
      grid-template-columns: 1fr; /* Single column layout */
      padding: 0 15px;
    }
    .footer-col {
      margin-bottom: 20px;
    }
    .footer-col:last-child {
      margin-bottom: 0;
    }
    .game-providers-section, .social-media-section, .payment-methods-section {
      padding: 0 15px;
    }
    .footer-bottom .footer-container {
      padding: 0 15px;
    }
  }
/* 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;
  }
}