:root {
  --header-offset: 122px; /* Desktop: 68px (header-top) + 52px (main-nav) = 120px + 2px buffer */
  --color-primary: #FF8C1A;
  --color-accent: #FFA53A;
  --color-button-gradient: linear-gradient(180deg, #FFA53A 0%, #D96800 100%);
  --color-card-bg: #17191F;
  --color-background: #0D0E12;
  --color-text-main: #FFF3E6;
  --color-border: #A84F0C;
  --color-glow: #FFB04D;
  --color-deep-orange: #D96800;
}

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

a {
  text-decoration: none;
  color: var(--color-text-main);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  background-color: var(--color-background); /* Default background, individual sections will override */
}

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

.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 20px; /* Padding for logo and buttons */
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--color-text-main);
  text-transform: uppercase;
  display: block; /* Ensure logo is always visible */
  flex-shrink: 0;
}

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

.desktop-nav-buttons {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.btn {
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: bold;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  color: var(--color-text-main); /* Text main for buttons */
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  background: var(--color-button-gradient); /* Button gradient */
}

.btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.main-nav {
  box-sizing: border-box;
  height: 52px; /* Desktop fixed height */
  display: flex; /* Desktop default: visible */
  align-items: center;
  overflow: hidden;
  background-color: var(--color-primary); /* Lighter orange for main nav */
  width: 100%;
}

.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 {
  padding: 10px 15px;
  font-weight: bold;
  color: var(--color-text-main);
  transition: color 0.3s ease;
}

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

/* Hamburger menu for mobile */
.hamburger-menu {
  display: none; /* Hidden on desktop */
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  position: relative;
  z-index: 1001; /* Above header */
  width: 40px;
  height: 40px;
  margin-right: 10px;
  box-sizing: border-box;
}

.hamburger-menu .bar {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--color-text-main);
  margin: 5px auto;
  transition: all 0.3s ease-in-out;
}

.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);
}

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

.overlay.active {
  display: block;
  opacity: 1;
}

.mobile-nav-buttons {
  display: none; /* Hidden on desktop */
  background-color: var(--color-card-bg); /* Use a suitable background for mobile buttons */
}

/* Footer styles */
.site-footer {
  background-color: var(--color-background); /* Dark background for footer */
  color: var(--color-text-main);
  padding: 40px 20px 20px;
  font-size: 14px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 30px;
}

.footer-col h3 {
  color: var(--color-accent); /* Accent color for footer headings */
  font-size: 16px;
  margin-bottom: 15px;
}

.footer-col .footer-logo {
  font-size: 20px;
  font-weight: bold;
  color: var(--color-text-main);
  text-transform: uppercase;
  margin-bottom: 15px;
  display: block;
}

.footer-col .footer-description {
  line-height: 1.6;
  margin-bottom: 15px;
  word-wrap: break-word;
  overflow-wrap: break-word;
  color: #ccc; /* Slightly lighter text for description */
}

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

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

.footer-nav a {
  color: #bbb; /* Lighter color for footer links */
  transition: color 0.3s ease;
}

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

.footer-slot-anchor-inner {
  margin-top: 15px; /* Spacing for dynamic slots */
  min-height: 20px; /* Ensure slot visibility even if empty */
}

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

.footer-dynamic-row {
  margin-bottom: 20px;
  padding-top: 10px; /* Some padding above dynamic rows */
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-dynamic-row-bottom-slot {
  margin-bottom: 20px;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #888; /* Muted color for copyright */
}

/* Mobile styles */
@media (max-width: 768px) {
  :root {
    --header-offset: 110px; /* Mobile: 60px (header-top) + 48px (mobile-nav-buttons) = 108px + 2px buffer */
  }

  body {
    padding-top: var(--header-offset);
    overflow-x: hidden; /* Prevent horizontal scroll on mobile */
  }

  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }

  .header-top {
    height: 60px; /* Mobile fixed height */
  }

  .header-container {
    padding: 0 15px; /* Smaller padding for mobile */
    max-width: none; /* Remove max-width on mobile */
    width: 100%;
    justify-content: space-between; /* Space between hamburger and logo/buttons */
  }

  .hamburger-menu {
    display: block; /* Show hamburger menu on mobile */
  }

  .logo {
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    margin-left: -40px; /* Offset for hamburger menu to visually center */
  }

  .logo img {
    max-height: 56px !important; /* Mobile logo max height */
    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; /* Mobile fixed height */
    align-items: center;
    width: 100%;
    max-width: 100%; /* Ensure it doesn't overflow */
    box-sizing: border-box;
    padding: 0 15px; /* Padding for buttons */
    overflow: hidden; /* Prevent button overflow */
    gap: 10px;
    flex-wrap: nowrap; /* Ensure buttons stay in one line */
    background-color: var(--color-card-bg); /* Background for mobile button row */
  }

  .mobile-nav-buttons .btn {
    flex: 1;
    min-width: 0;
    max-width: calc(50% - 5px); /* Max width for two buttons with 10px gap */
    box-sizing: border-box;
    padding: 8px 12px; /* Smaller padding for mobile buttons */
    font-size: 13px; /* Smaller font size for mobile buttons */
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    flex-direction: column; /* Vertical menu on mobile */
    position: fixed;
    top: var(--header-offset); /* Below header and mobile buttons */
    left: 0;
    width: 280px; /* Width of the mobile menu */
    height: calc(100% - var(--header-offset));
    background-color: var(--color-background); /* Menu background */
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
    transform: translateX(-100%); /* Slide out to the left */
    transition: transform 0.3s ease;
    overflow-y: auto; /* Enable scrolling for long menus */
    z-index: 1001; /* Above overlay */
  }

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

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 15px;
    max-width: none; /* Remove max-width on mobile */
    width: 100%;
    height: auto; /* Adjust height based on content */
  }

  .nav-link {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

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

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

  .footer-top-grid {
    grid-template-columns: 1fr; /* Single column on mobile */
    gap: 25px;
  }
  .footer-col:not(.footer-about) {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 25px;
  }

  .footer-col h3 {
    margin-top: 0;
  }
}
/* 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;
  }
}