:root {
  --header-offset: 122px;
  --primary-color: #FF8C1A;
  --secondary-color: #FFA53A;
  --background-color: #0D0E12;
  --card-bg-color: #17191F;
  --text-main-color: #FFF3E6;
  --border-color: #A84F0C;
  --glow-color: #FFB04D;
  --deep-orange-color: #D96800;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  padding-top: var(--header-offset);
  overflow-x: hidden; /* Prevent horizontal scroll from mobile content overflow */
  background-color: var(--background-color);
  color: var(--text-main-color);
}

/* --- Header Styles --- */
.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  box-sizing: border-box;
}

.header-top {
  box-sizing: border-box;
  height: 68px; /* Desktop fixed height */
  display: flex;
  align-items: center;
  background-color: var(--background-color); /* Deep dark background */
  width: 100%;
  overflow: hidden; /* Prevent content overflow */
}

.header-container {
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 30px; /* Padding for logo and buttons */
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: var(--text-main-color);
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block; /* Ensure it's block for proper alignment */
}

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

.btn {
  background: linear-gradient(180deg, var(--secondary-color) 0%, var(--deep-orange-color) 100%);
  color: var(--text-main-color);
  text-decoration: none;
  padding: 10px 20px;
  border-radius: 5px;
  font-weight: bold;
  white-space: nowrap;
  transition: background 0.3s ease;
  border: none;
  cursor: pointer;
  display: inline-block;
  text-align: center;
}

.btn:hover {
  background: linear-gradient(180deg, var(--primary-color) 0%, var(--deep-orange-color) 100%);
}

.main-nav {
  box-sizing: border-box;
  height: 52px; /* Desktop fixed height */
  display: flex;
  align-items: center;
  background-color: var(--card-bg-color); /* Slightly lighter dark background, distinct from header-top */
  width: 100%;
  overflow: hidden; /* Prevent content overflow */
}

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

.nav-link {
  color: var(--text-main-color);
  text-decoration: none;
  padding: 0 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: color 0.3s ease;
}

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

/* Hamburger Menu (Desktop - Hidden) */
.hamburger-menu {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 25px;
  cursor: pointer;
  padding: 5px;
  z-index: 1001; /* Above header */
}

.hamburger-menu span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: var(--text-main-color);
  border-radius: 3px;
  transition: all 0.3s ease;
}

/* Mobile Nav Buttons (Desktop - Hidden) */
.mobile-nav-buttons {
  box-sizing: border-box;
  display: none; /* Hidden on desktop */
  min-height: 48px; /* Mobile fixed height placeholder */
  width: 100%;
  background-color: var(--card-bg-color); /* Same as main-nav for consistency */
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  z-index: 990; /* Below header, above content */
  align-items: center;
  justify-content: center;
}

/* Overlay (Desktop - Hidden) */
.overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease;
}

.overlay.active {
  opacity: 1;
  visibility: visible;
}

/* --- Footer Styles --- */
.site-footer {
  background-color: var(--card-bg-color);
  padding: 40px 20px 20px;
  color: var(--text-main-color);
  box-sizing: border-box;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.footer-col {
  display: flex;
  flex-direction: column;
}

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

.footer-description {
  font-size: 14px;
  line-height: 1.6;
  color: #ccc;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

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

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

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

.footer-nav a {
  color: #ccc;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s ease;
}

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

.footer-slot-anchor-inner {
  margin-top: 15px; /* Provide some spacing for injected content */
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  font-size: 13px;
  color: #aaa;
  padding-top: 20px;
}

.footer-bottom p {
  margin: 0;
}

/* --- Mobile Specific Styles --- */
@media (max-width: 768px) {
  :root {
    --header-offset: 110px; /* Mobile: 60px (header-top) + 48px (main-nav) = 108px + 2px safety */
  }

  /* Header mobile adjustments */
  .header-top {
    height: 60px !important; /* Mobile fixed height */
    padding-left: 15px; /* Adjust padding for mobile */
    padding-right: 15px;
  }

  .header-container {
    padding: 0; /* Reset container padding, handled by header-top */
    max-width: none; /* Remove max-width for mobile */
    width: 100%;
    position: relative; /* For logo centering */
  }

  .logo {
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    font-size: 24px; /* Adjust logo size for mobile */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: calc(100% - 100px); /* Ensure space for hamburger */
  }

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

  .hamburger-menu {
    display: flex; /* Show hamburger menu on mobile */
    position: relative; /* Ensure it's above other elements */
    z-index: 1001;
  }

  .main-nav {
    height: auto;
    min-height: 48px !important; /* Mobile fixed height for non-expanded */
    display: none; /* Hidden by default on mobile */
    flex-direction: column;
    position: fixed;
    top: var(--header-offset); /* Position below fixed header */
    left: 0;
    width: 80%; /* Menu takes 80% width */
    max-width: 300px; /* Max width for mobile menu */
    transform: translateX(-100%); /* Slide out to the left */
    transition: transform 0.3s ease;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.5);
    background-color: var(--card-bg-color); /* Consistent background */
    padding-top: 20px;
    padding-bottom: 20px;
    overflow-y: auto; /* Allow scrolling for long menus */
    z-index: 1000;
  }

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

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 20px;
    max-width: none; /* Remove max-width for 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 Nav Buttons (Always visible below header-top) */
  .mobile-nav-buttons {
    display: flex !important; /* Show mobile buttons */
    min-height: 48px; /* Fixed height for this bar */
    align-items: center;
    justify-content: center; /* Center buttons if only one */
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden; /* Prevent horizontal overflow */
    gap: 10px; /* Space between buttons */
    flex-wrap: nowrap; /* Ensure buttons stay in one line */
    background-color: var(--card-bg-color); /* Same background as main nav */
    z-index: 990; /* Below header, above content */
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  }

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

  /* Footer mobile adjustments */
  .footer-top-grid {
    grid-template-columns: 1fr; /* Single column layout for mobile */
  }

  .footer-col {
    margin-bottom: 20px;
  }

  .footer-col:last-child {
    margin-bottom: 0;
  }

  /* Common mobile content overflow fix */
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }
}

/* Hamburger menu active state (X icon) */
.hamburger-menu.active span:nth-child(1) {
  transform: translateY(11px) rotate(45deg);
}
.hamburger-menu.active span:nth-child(2) {
  opacity: 0;
}
.hamburger-menu.active span:nth-child(3) {
  transform: translateY(-11px) rotate(-45deg);
}

/* Prevent body scroll when menu is open */
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;
  }
}
/* 内容保护（系统追加，请勿删除） */
body {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
input, textarea, select, [contenteditable="true"] {
  -webkit-user-select: text;
  -moz-user-select: text;
  user-select: text;
}