:root {
  --primary-color: #FFD700;
  --secondary-color: #1E90FF;
  --dark-bg: #1a1a1a;
  --light-text: #ffffff;
  --dark-text: #333333;
  --footer-bg: #1a4f8f;

  --header-offset: 120px; /* Desktop: Header + button area total height <= this value */
}
@media (max-width: 768px) {
  :root {
    --header-offset: 130px; /* Mobile: Header top + mobile buttons total height <= this value */
  }
}

html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--dark-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
body.no-scroll {
  overflow: hidden;
}

.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 999; /* Below main-nav on mobile, above content */
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  background-color: var(--dark-bg);
  display: flex;
  flex-direction: column;
}

.header-top {
  background-color: var(--dark-bg);
  padding: 15px 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 30px;
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
  display: block;
  line-height: 1;
}

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

.main-nav {
  background-color: var(--primary-color);
  padding: 10px 0;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  width: 100%;
}

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

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

.nav-link:hover,
.nav-link.active {
  background-color: rgba(0, 0, 0, 0.1);
  border-radius: 4px;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
  white-space: nowrap;
  border: none;
  text-align: center;
  font-size: 15px;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--dark-text);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--light-text);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.hamburger-menu {
  display: none;
  width: 30px;
  height: 22px;
  position: relative;
  cursor: pointer;
  z-index: 1001; /* Always on top for clicking */
  order: -1;
  margin-right: auto;
}

.hamburger-menu span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--primary-color);
  position: absolute;
  left: 0;
  transition: all 0.3s ease;
}

.hamburger-menu span:nth-child(1) { top: 0; }
.hamburger-menu span:nth-child(2) { top: 9px; }
.hamburger-menu span:nth-child(3) { top: 18px; }

.hamburger-menu.active span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.hamburger-menu.active span:nth-child(2) { opacity: 0; }
.hamburger-menu.active span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

.mobile-nav-buttons {
  display: none;
  background-color: var(--dark-bg);
  padding: 10px 15px;
  justify-content: center;
  gap: 10px;
  width: 100%;
  box-sizing: border-box;
}

.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;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

.site-footer {
  background-color: var(--footer-bg);
  color: var(--light-text);
  padding: 40px 0;
  font-size: 14px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 0 30px;
  gap: 20px;
}

.footer-col {
  flex: 1;
  min-width: 200px;
  margin-bottom: 20px;
}

.footer-col h3 {
  color: var(--primary-color);
  margin-bottom: 15px;
  font-size: 18px;
}

.footer-logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
  display: block;
  margin-bottom: 15px;
}

.site-footer p {
  line-height: 1.6;
  margin-bottom: 10px;
}

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

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

.footer-nav a {
  color: var(--light-text);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

@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;
  }

  .site-header {
    flex-direction: column;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  }

  .header-top {
    padding: 10px 0;
    justify-content: space-between;
    width: 100%;
  }

  .header-container {
    padding: 0 15px;
    width: 100%;
    max-width: none;
    position: relative;
  }

  .logo {
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    font-size: 24px;
    padding: 0;
    text-align: center;
  }

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

  .hamburger-menu {
    display: block;
    position: relative;
    z-index: 1001;
    margin-right: auto;
    margin-left: 0;
  }

  .mobile-nav-buttons {
    display: flex;
    justify-content: center;
    padding: 10px 15px;
    background-color: var(--dark-bg);
    width: 100%;
    box-sizing: border-box;
    gap: 10px;
  }

  .main-nav {
    display: none; /* Hidden by default */
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100%;
    background-color: var(--dark-bg);
    transform: translateX(-100%); /* Slide out to the left */
    transition: transform 0.3s ease;
    padding-top: var(--header-offset); /* Push menu content down */
    box-sizing: border-box;
    overflow-y: auto;
    z-index: 1000; /* Above overlay, below hamburger */
  }

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

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 15px;
    width: 100%;
    max-width: none;
  }

  .nav-link {
    width: 100%;
    padding: 12px 15px;
    color: var(--light-text);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .nav-link:last-child {
    border-bottom: none;
  }

  .nav-link:hover,
  .nav-link.active {
    background-color: rgba(255, 255, 255, 0.1);
  }

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

  .footer-col {
    min-width: unset;
    width: 100%;
    text-align: center;
  }

  .footer-col h3 {
    margin-top: 20px;
  }

  .footer-logo {
    margin-bottom: 10px;
  }
}
/* 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;
  }
}