html { scroll-behavior: smooth; }
body { margin: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; }
:root {
  --header-offset: 130px; /* Desktop: header-top (70px) + main-nav (60px) */
}
@media (max-width: 768px) {
  :root {
    --header-offset: 130px; /* Mobile: header-top (70px) + mobile-nav-buttons (60px) */
  }
}
body { padding-top: var(--header-offset); }

.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  background-color: #fff; /* Neutral background for the entire fixed header */
}

.header-top {
  background-color: #8B0000; /* Auxiliary Dark Red */
  height: 70px; /* Fixed height for calculation */
  display: flex;
  align-items: center;
  padding: 0;
}

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

.logo {
  font-size: 28px;
  font-weight: bold;
  color: #FFD700; /* Primary Gold */
  text-decoration: none;
  text-transform: uppercase;
  display: block;
}

.desktop-nav-buttons {
  display: flex;
  gap: 15px;
}

.btn {
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  white-space: nowrap;
  cursor: pointer;
}

.btn.login-btn {
  background-color: #FFD700; /* Primary Gold */
  color: #8B0000; /* Auxiliary Dark Red */
}

.btn.login-btn:hover {
  background-color: #FFC000;
}

.btn.register-btn {
  background-color: #8B0000; /* Auxiliary Dark Red */
  color: #FFD700; /* Primary Gold */
  border: 1px solid #FFD700;
}

.btn.register-btn:hover {
  background-color: #A00000;
  border-color: #FFC000;
}

.hamburger-menu {
  display: none; /* Hidden on desktop */
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 24px;
  position: relative;
  z-index: 1001;
}

.hamburger-menu .bar {
  display: block;
  width: 100%;
  height: 3px;
  background-color: #FFD700; /* Primary Gold */
  margin: 5px 0;
  transition: all 0.3s ease;
}

.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); }

.main-nav {
  background-color: #FFD700; /* Primary Gold */
  height: 60px; /* Fixed height for calculation */
  display: flex; /* Desktop default: flex */
  align-items: center;
  padding: 0;
}

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

.nav-link {
  color: #8B0000; /* Auxiliary Dark Red */
  text-decoration: none;
  font-weight: bold;
  padding: 5px 0;
  transition: color 0.3s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: #6A0000;
}

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

/* Footer Styles */
.site-footer {
  background-color: #222; /* Darker background for footer */
  color: #eee;
  padding: 40px 0 20px;
  font-size: 14px;
}

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

.footer-section {
  flex: 1;
  min-width: 180px;
  margin-bottom: 20px;
}

.footer-section h3 {
  color: #FFD700; /* Primary Gold */
  font-size: 18px;
  margin-bottom: 15px;
  text-transform: uppercase;
}

.footer-nav a {
  color: #ccc;
  text-decoration: none;
  display: block;
  margin-bottom: 8px;
  transition: color 0.3s ease;
}

.footer-nav a:hover {
  color: #FFD700; /* Primary Gold */
}

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

.footer-bottom p {
  margin: 0;
}

/* Mobile Styles */
@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;
  }

  .header-container {
    padding: 0 15px;
    max-width: none;
    width: 100%;
    justify-content: space-between;
  }

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

  .hamburger-menu {
    display: block;
    order: 1;
    margin-right: auto; /* Push logo towards center */
  }

  .logo {
    order: 2;
    flex-grow: 1;
    text-align: center;
    /* Adjust for visual centering due to hamburger menu */
    margin-left: -30px; 
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    flex-direction: column;
    position: fixed;
    top: var(--header-offset); /* Position below fixed header elements */
    left: 0;
    width: 80%;
    max-width: 300px;
    height: calc(100vh - var(--header-offset));
    background-color: #FFD700; /* Primary Gold */
    overflow-y: auto;
    transform: translateX(-100%); /* Off-screen to the left */
    transition: transform 0.3s ease;
    z-index: 999;
    box-shadow: 2px 0 5px rgba(0,0,0,0.2);
  }

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

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

  .nav-link {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid rgba(139,0,0,0.1);
  }

  .mobile-nav-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    padding: 10px 15px;
    background-color: #8B0000; /* Auxiliary Dark Red */
    width: 100%;
    height: 60px; /* Fixed height for calculation */
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  }

  .mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 998;
    display: none;
  }

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

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

  .footer-section {
    min-width: unset;
    width: 100%;
  }

  .footer-section h3 {
    text-align: center;
  }

  .footer-nav a {
    text-align: center;
  }
}
/* 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;
  }
}