:root {
  --primary-color: #E53935; /* Red */
  --secondary-color: #FF5A4F; /* Lighter Red/Pink */
  --text-main-color: #333333;
  --card-bg-color: #FFFFFF;
  --bg-color: #F5F7FA;
  --border-color: #E0E0E0;

  /* Neon colors based on theme */
  --neon-primary: var(--primary-color); /* Using primary red as base */
  --neon-secondary: var(--secondary-color); /* Using secondary pink as base */
  --neon-accent: #FFFF00; /* A vibrant yellow for contrast */
  --dark-bg-1: #0a0a0a;
  --dark-bg-2: #1a1a2e;
  --dark-bg-3: #16213e;

  /* Header offset with marquee */
  --header-offset: 166px; /* Desktop: Marquee 44 + HeaderTop 68 + MainNav 52 + 2px */
}

body {
  font-family: 'Arial', sans-serif;
  margin: 0;
  padding-top: var(--header-offset); /* Ensure content is below fixed header */
  background-color: var(--bg-color);
  color: var(--text-main-color);
  line-height: 1.6;
  overflow-x: hidden; /* Prevent horizontal scroll from initial load */
}

/* Animations for neon effects */
@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 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 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; }
}

/* Marquee Section Styles */
.marquee-section {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 44px; /* Desktop fixed height */
  box-sizing: border-box;
  background: linear-gradient(135deg, var(--dark-bg-1), var(--dark-bg-2), var(--dark-bg-3));
  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, 0, 255, 0.1); /* General neon glow */
  z-index: 1001;
}

.marquee-container {
  width: 100%;
  max-width: 100%;
  height: 100%;
  margin: 0 auto;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 0 20px;
  box-sizing: border-box;
}

.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 Section Styles */
.site-header {
  position: fixed;
  top: 44px; /* Adjust for marquee height */
  left: 0;
  width: 100%;
  z-index: 1000; /* Below marquee, above content */
  background: linear-gradient(135deg, var(--dark-bg-1), var(--dark-bg-2), var(--dark-bg-3));
  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, 0, 255, 0.1);
}

.header-top {
  box-sizing: border-box;
  min-height: 68px;
  height: 68px;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 0 20px; /* Default padding for desktop */
}

.header-container {
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px; /* Desktop container width */
  margin: 0 auto;
}

.logo {
  color: #ffffff; /* Regular color for logo */
  font-weight: bold;
  text-decoration: none;
  font-size: 24px;
  white-space: nowrap;
  /* NO neon effects for logo */
}
.logo img {
  display: block;
  max-height: 60px;
  height: auto;
  width: auto;
  max-width: 280px;
  object-fit: contain;
  /* NO neon effects for logo image */
}

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

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

.main-nav {
  box-sizing: border-box;
  min-height: 52px;
  height: 52px;
  display: flex; /* Desktop: visible */
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--dark-bg-2), var(--dark-bg-3), var(--dark-bg-1)); /* Slightly different dark gradient */
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 2px solid;
  animation: theme-colors 4s ease-in-out infinite reverse; /* Dynamic border color, reversed animation */
  box-shadow:
    0 0 8px var(--neon-secondary),
    0 0 16px var(--neon-secondary),
    0 0 24px var(--neon-secondary),
    inset 0 0 16px rgba(0, 255, 255, 0.1);
}

.nav-container {
  box-sizing: border-box;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: 0 20px;
}

.nav-link {
  color: #ffffff; /* Regular color for nav links */
  text-decoration: none;
  padding: 10px 15px;
  font-weight: 500;
  transition: color 0.3s ease, text-shadow 0.3s ease;
  white-space: nowrap;
  /* NO neon effects for nav links */
}

.nav-link:hover, .nav-link.active {
  color: var(--neon-accent); /* Highlight with accent color */
  text-shadow: 0 0 5px var(--neon-accent);
}

/* Hamburger Menu (Desktop hidden) */
.hamburger-menu {
  display: none; /* Hidden by default on desktop */
}

/* Mobile Menu Overlay (Desktop hidden) */
.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; /* Below mobile menu, above content */
  transition: opacity 0.3s ease;
  opacity: 0;
}

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

/* Buttons */
.btn {
  position: relative;
  background: linear-gradient(180deg, var(--secondary-color) 0%, var(--primary-color) 100%); /* Custom button gradient */
  padding: 12px 25px;
  color: #ffffff;
  text-decoration: none;
  border-radius: 5px;
  border: 2px solid;
  animation: theme-colors 4s ease-in-out infinite; /* Dynamic border glow */
  text-shadow:
    0 0 5px #ffffff,
    0 0 10px var(--neon-primary);
  transition: all 0.3s ease;
  font-weight: 600;
  white-space: nowrap;
  box-sizing: border-box;
  text-align: center;
}

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

/* Footer Section Styles */
.site-footer {
  background-color: #1a1a1a; /* Dark footer background */
  color: #cccccc;
  padding: 40px 20px 20px;
  font-size: 14px;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto 30px;
}

.footer-col h3 {
  color: #ffffff;
  font-size: 18px;
  margin-bottom: 15px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 10px;
}

.footer-logo {
  color: #ffffff;
  font-weight: bold;
  text-decoration: none;
  font-size: 28px;
  margin-bottom: 15px;
  display: block;
}

.footer-description {
  line-height: 1.8;
  color: #aaaaaa;
  margin-bottom: 20px;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

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

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

.footer-nav a {
  color: #cccccc;
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #888888;
}

.footer-slot-anchor-inner {
  min-height: 10px; /* Ensure visibility for slots */
}

/* Mobile Responsive */
@media (max-width: 768px) {
  :root {
    --header-offset: 146px; /* Mobile: Marquee 36 + HeaderTop 60 + MobileNavButtons 48 + 2px */
  }

  .marquee-section {
    height: 36px !important;
  }
  .marquee-container {
    gap: 10px !important;
    padding: 0 12px !important;
  }
  .marquee-icon {
    width: 20px !important;
    height: 20px !important;
  }
  .marquee-icon-emoji {
    font-size: 14px !important;
  }
  .marquee-text {
    font-size: 14px !important;
  }
  .marquee-separator {
    font-size: 14px !important;
    margin: 0 10px !important;
  }
  .marquee-content {
    gap: 20px;
    animation: marquee-scroll 25s linear infinite;
  }

  .site-header {
    top: 36px; /* Adjust for mobile marquee height */
  }

  .header-top {
    min-height: 60px !important;
    height: 60px !important;
    padding: 0 15px; /* Smaller padding for mobile */
  }
  .header-container {
    padding: 0; /* Handled by header-top padding */
    max-width: none; /* No max-width on mobile */
  }

  .hamburger-menu {
    display: flex; /* Visible on mobile */
    cursor: pointer;
    padding: 10px;
    position: relative;
    z-index: 1002; /* Above logo and buttons on mobile */
    margin-right: auto; /* Push logo to center */
    width: 30px;
    height: 24px;
    flex-direction: column;
    justify-content: space-between;
  }

  .hamburger-menu .bar1,
  .hamburger-menu .bar2,
  .hamburger-menu .bar3 {
    width: 100%;
    height: 3px;
    background-color: #ffffff;
    transition: all 0.3s ease;
    border-radius: 2px;
    box-shadow: 0 0 5px var(--neon-primary), 0 0 10px var(--neon-primary); /* Neon glow for bars */
  }

  .hamburger-menu.active .bar1 {
    transform: translateY(10px) rotate(45deg);
  }

  .hamburger-menu.active .bar2 {
    opacity: 0;
  }

  .hamburger-menu.active .bar3 {
    transform: translateY(-10px) rotate(-45deg);
  }

  .logo {
    order: 2; /* Center */
    flex: 1 !important; /* Allow logo to take remaining space for centering */
    display: flex !important; /* Force flex for image logo centering */
    justify-content: center !important;
    align-items: center !important;
    font-size: 20px;
  }
  .logo img {
    max-height: 56px !important; /* Smaller logo on mobile */
  }

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

  .mobile-nav-buttons {
    display: flex !important; /* Visible on mobile */
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 10px 15px;
    overflow: hidden; /* Prevent overflow */
    gap: 10px;
    justify-content: center;
    flex-wrap: nowrap; /* Ensure buttons stay in one line */
    min-height: 48px; /* Fixed height for mobile buttons area */
    background: linear-gradient(135deg, var(--dark-bg-1), var(--dark-bg-2), var(--dark-bg-3));
    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, 0, 255, 0.1);
  }

  .mobile-nav-buttons .btn {
    flex: 1;
    min-width: 0;
    max-width: calc(50% - 5px); /* Account for gap */
    padding: 8px 12px; /* Smaller padding */
    font-size: 13px; /* Smaller font */
    white-space: normal; /* Allow text wrapping */
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .main-nav {
    display: none; /* Hidden by default, shown by JS */
    flex-direction: column;
    position: fixed;
    top: var(--header-offset); /* Below header and mobile buttons */
    left: 0;
    width: 80%; /* Sidebar width */
    max-width: 300px;
    height: calc(100% - var(--header-offset)); /* Full height below header */
    background: linear-gradient(135deg, var(--dark-bg-1), var(--dark-bg-2), var(--dark-bg-3));
    transform: translateX(-100%); /* Off-screen initially */
    transition: transform 0.3s ease-in-out;
    padding: 20px 0;
    box-sizing: border-box;
    z-index: 1000; /* Above overlay */
    border-right: 2px solid;
    animation: theme-colors 4s ease-in-out infinite;
    box-shadow:
      0 0 10px var(--neon-primary),
      0 0 20px var(--neon-primary),
      inset 0 0 20px rgba(255, 0, 255, 0.1);
  }

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

  .nav-container {
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 0 15px;
    max-width: none; /* No max-width on mobile */
  }

  .nav-link {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .footer-top-grid {
    grid-template-columns: 1fr; /* Single column on mobile */
    gap: 20px;
  }
}

/* Mobile overflow protection (mandatory) */
@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;
  }
}
/* 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;
  }
}