:root {
  --primary-color: #FF8C1A;
  --accent-color: #FFA53A;
  --button-gradient: linear-gradient(180deg, #FFA53A 0%, #D96800 100%);
  --card-bg: #17191F;
  --body-bg: #0D0E12;
  --text-main: #FFF3E6;
  --border-color: #A84F0C;
  --glow-color: #FFB04D;
  --deep-orange: #D96800;
  --header-offset: 122px; /* Desktop: 68px (header-top) + 52px (main-nav) + 2px buffer */
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  background-color: var(--body-bg);
  color: var(--text-main);
  padding-top: var(--header-offset);
  overflow-x: hidden; /* Prevent body overflow on desktop as well */
}

body.no-scroll {
  overflow: hidden;
}

/* --- Site Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  box-sizing: border-box;
}

.header-top {
  background-color: var(--card-bg); /* Darker background */
  min-height: 68px;
  height: 68px;
  display: flex;
  align-items: center;
  overflow: hidden;
  width: 100%;
  box-sizing: border-box;
  padding: 0 20px; /* Default padding for desktop */
}

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

.logo {
  color: var(--text-main);
  font-size: 28px;
  font-weight: bold;
  text-decoration: none;
  white-space: nowrap;
  padding: 0;
  display: flex;
  align-items: center;
  height: 100%;
}

.logo img {
  display: block;
  max-height: 60px;
  height: auto;
  width: auto;
  max-width: 280px;
  object-fit: contain;
}

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

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

.main-nav {
  background-color: var(--body-bg); /* Even darker background */
  min-height: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  overflow: hidden;
  width: 100%;
  box-sizing: border-box;
  padding: 0 20px; /* Default padding for desktop */
}

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

.nav-link {
  color: var(--text-main);
  text-decoration: none;
  padding: 10px 15px;
  font-size: 16px;
  white-space: nowrap;
  transition: color 0.3s ease, background-color 0.3s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-color);
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 25px;
  background: var(--button-gradient);
  color: var(--text-main);
  text-decoration: none;
  font-weight: bold;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  white-space: nowrap;
}

.btn:hover {
  filter: brightness(1.1);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4), 0 0 15px var(--glow-color);
}

.hamburger-menu {
  display: none; /* Hidden on desktop */
  width: 30px;
  height: 24px;
  position: relative;
  cursor: pointer;
  z-index: 1001; /* Above logo on mobile */
}

.hamburger-menu span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--text-main);
  border-radius: 2px;
  position: absolute;
  left: 0;
  transition: all 0.3s ease;
}

.hamburger-menu span:nth-child(1) { top: 0; }
.hamburger-menu span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.hamburger-menu span:nth-child(3) { bottom: 0; }

.hamburger-menu.active span:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
.hamburger-menu.active span:nth-child(2) { opacity: 0; }
.hamburger-menu.active span:nth-child(3) { bottom: 50%; transform: translateY(50%) rotate(-45deg); }

.mobile-menu-overlay {
  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 --- */
.site-footer {
  background-color: var(--card-bg);
  padding: 40px 20px 20px;
  border-top: 1px solid var(--border-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 auto;
}

.footer-col {
  padding: 10px 0;
}

.footer-logo {
  color: var(--accent-color);
  font-size: 26px;
  font-weight: bold;
  text-decoration: none;
  margin-bottom: 15px;
  display: block;
}

.footer-description {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-main);
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.footer-col h3 {
  color: var(--accent-color);
  font-size: 18px;
  margin-bottom: 15px;
  position: relative;
  padding-bottom: 5px;
}

.footer-col h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background-color: var(--primary-color);
}

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

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

.footer-nav a {
  color: var(--text-main);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s ease;
}

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

.footer-dynamic-col .footer-slot-anchor-inner {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 5px;
}

.footer-dynamic-row {
  max-width: 1200px;
  margin: 0 auto 20px auto;
  padding: 10px 0;
  border-top: 1px solid rgba(var(--border-color), 0.3);
}

.footer-dynamic-row .footer-slot-anchor-inner {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 13px;
  color: var(--text-main);
}

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

  body {
    padding-top: var(--header-offset);
    overflow-x: hidden;
  }

  .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 */
  .site-header {
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
  }

  .header-top {
    min-height: 60px;
    height: 60px;
    padding: 0 15px; /* Smaller padding for mobile */
    justify-content: space-between; /* To push hamburger left, logo center, empty space right */
  }

  .header-container {
    width: 100%;
    max-width: none; /* No max-width on mobile */
    padding: 0;
    justify-content: space-between;
    position: relative; /* Added for absolute logo positioning */
  }

  .hamburger-menu {
    display: block;
    order: 0;
    margin-right: 0;
    z-index: 2; /* Ensure it's above the absolutely positioned logo */
  }

  .logo {
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    position: absolute !important; /* Force absolute positioning */
    left: 50% !important;
    transform: translateX(-50%) !important;
    max-width: calc(100% - 100px); /* Account for hamburger (left) and potential right element (empty space) */
  }

  .logo img {
    max-height: 56px !important; /* Smaller max-height for mobile */
    max-width: 100%;
  }

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

  .mobile-nav-buttons {
    display: flex !important; /* Show mobile buttons */
    min-height: 48px;
    align-items: center;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
    background-color: var(--body-bg);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
  }

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

  .main-nav {
    display: none; /* Hidden by default on mobile */
    position: fixed;
    top: 108px; /* Below header-top (60px) and mobile-nav-buttons (48px) */
    left: 0;
    width: 280px;
    height: calc(100% - 108px); /* Take remaining height */
    flex-direction: column;
    transform: translateX(-100%); /* Slide out from left */
    transition: transform 0.3s ease;
    background-color: var(--card-bg);
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.5);
    z-index: 999;
    overflow-y: auto; /* Allow scrolling for long menus */
    box-sizing: border-box;
  }

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

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
    height: auto;
    max-width: none; /* No max-width on mobile */
  }

  .nav-link {
    width: 100%;
    padding: 12px 15px;
    font-size: 16px;
    text-align: left;
    border-bottom: 1px solid rgba(var(--border-color), 0.2);
    border-radius: 0;
  }
  .nav-link:last-child {
      border-bottom: none;
  }
  .nav-link:hover, .nav-link.active {
      background-color: rgba(255, 255, 255, 0.1);
  }

  /* Footer */
  .site-footer {
    padding: 30px 15px 15px;
  }

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

  .footer-dynamic-row {
    margin-bottom: 15px;
  }
  
  .footer-bottom {
    padding-top: 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;
  }
}