:root {
  --primary-color: #2F6BFF;
  --accent-color: #6FA3FF;
  --button-gradient: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
  --card-bg: #FFFFFF;
  --page-bg: #F4F7FB;
  --text-main: #1F2D3D;
  --text-dark: #000000; /* Custom Color_1776249996415 */
  --border-color: #D6E2FF;
  --glow-color: #A5C4FF;

  /* Header offset: 68px (header-top) + 52px (main-nav) = 120px desktop. Add 2px for safety. */
  --header-offset: 122px;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  color: var(--text-main);
  background-color: var(--page-bg);
  padding-top: var(--header-offset); /* Important for fixed header */
  overflow-x: hidden; /* Prevent horizontal scroll on desktop too */
}

/* Header Styles */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-top {
  box-sizing: border-box;
  min-height: 68px;
  height: 68px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--primary-color); /* Main color for top bar */
  width: 100%;
  color: #fff;
}

.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; /* Adjusted padding for container */
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: #fff;
  text-decoration: none;
  display: block; /* Ensure it's a block-level element */
  white-space: nowrap; /* Prevent logo text from wrapping */
}

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  color: #fff;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease;
  background: var(--button-gradient); /* Button gradient */
  border: none;
  cursor: pointer;
  white-space: nowrap; /* Prevent button text from wrapping on desktop */
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Main Navigation Styles */
.main-nav {
  box-sizing: border-box;
  min-height: 52px;
  height: 52px;
  display: flex; /* Desktop default: visible */
  align-items: center;
  overflow: hidden;
  background-color: var(--accent-color); /* Accent color 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; /* Center nav links */
  align-items: center;
  padding: 0 20px;
}

.nav-link {
  color: #fff;
  text-decoration: none;
  padding: 0 15px; /* Spacing between nav links */
  font-weight: bold;
  transition: color 0.3s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--glow-color); /* Use glow color for hover */
}

/* Hamburger Menu (hidden on desktop) */
.hamburger-menu {
  display: none; /* Hidden on desktop */
  width: 30px;
  height: 24px;
  position: relative;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
  z-index: 1001; /* Above header */
}

.hamburger-menu span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: #fff;
  border-radius: 2px;
  transition: all 0.3s ease-in-out;
}

/* Mobile Navigation Buttons (hidden on desktop) */
.mobile-nav-buttons {
  box-sizing: border-box;
  display: none; /* Hidden on desktop by default */
  min-height: 48px; /* Minimum height for mobile button bar */
  background-color: var(--page-bg); /* Use page background for this bar */
  width: 100%;
  padding: 10px 15px;
  box-shadow: 0 1px 5px rgba(0, 0, 0, 0.05);
}

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

.footer-top-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-col h3 {
  color: #fff;
  font-size: 18px;
  margin-top: 0;
  margin-bottom: 15px;
}

.footer-logo {
  font-size: 20px;
  font-weight: bold;
  color: #fff;
  text-decoration: none;
  margin-bottom: 15px;
  display: block;
}

.footer-description {
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.7);
  word-wrap: break-word; /* Ensure description wraps */
  overflow-wrap: break-word;
}

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

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

.footer-nav a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom p {
  margin: 0;
}

/* Dynamic slot anchors - ensure they are visible */
.footer-slot-anchor-inner, .footer-slot-anchor-outer {
  min-height: 1px; /* Ensure it takes up space, even if empty */
  /* Do not set display: none, visibility: hidden, opacity: 0, height: 0, max-height: 0, overflow: hidden */
}

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

  body {
    padding-top: var(--header-offset);
    overflow-x: hidden; /* Ensure body itself also prevents horizontal scroll */
  }
  
  .page-content img { /* Mobile overflow protection */
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }

  .header-top {
    min-height: 60px !important;
    height: 60px !important;
  }

  .header-container {
    width: 100%;
    max-width: none; /* Mobile container fills width */
    padding: 0 15px; /* Smaller padding for mobile */
    justify-content: space-between; /* To push hamburger and logo apart */
    position: relative; /* For absolute positioning of logo if needed */
  }

  /* Mobile logo centering (Method 1: Flexbox) */
  .logo {
    flex: 1 !important; /* Allow logo to take available space */
    display: flex !important;
    justify-content: center !important; /* Center the text/image within its flex item */
    align-items: center !important;
    position: absolute; /* To truly center it regardless of hamburger width */
    left: 50%;
    transform: translateX(-50%);
    max-width: calc(100% - 100px); /* Leave space for hamburger and potential right element */
  }
  .logo img {
    max-height: 56px !important; /* Max height for mobile logo */
    max-width: 100%; /* Ensure image doesn't overflow */
  }

  .hamburger-menu {
    display: flex;
    z-index: 1001;
  }

  .hamburger-menu.active span:nth-child(1) {
    transform: translateY(10px) rotate(45deg);
  }

  .hamburger-menu.active span:nth-child(2) {
    opacity: 0;
  }

  .hamburger-menu.active span:nth-child(3) {
    transform: translateY(-10px) rotate(-45deg);
  }

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

  .mobile-nav-buttons {
    display: flex !important; /* Show mobile buttons */
    min-height: 48px;
    align-items: center;
    justify-content: center; /* Center buttons horizontally */
    width: 100%; max-width: 100%;
    box-sizing: border-box;
    padding: 8px 15px; /* Adjusted padding for mobile buttons */
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap; /* Ensure buttons stay on one line */
    background-color: var(--page-bg); /* Use page background for this bar */
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.05);
  }

  .mobile-nav-buttons .btn {
    flex: 1;
    min-width: 0;
    max-width: calc(50% - 5px); /* 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; /* Allow text to wrap */
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .main-nav {
    display: none; /* Hidden by default on mobile */
    position: fixed;
    top: var(--header-offset); /* Position below fixed header */
    left: 0;
    width: 80%; /* Menu width */
    max-width: 300px; /* Max width for mobile menu */
    height: calc(100% - var(--header-offset)); /* Fill remaining height */
    background-color: var(--text-main); /* Dark background for mobile menu */
    flex-direction: column;
    padding: 20px 0;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
    transform: translateX(-100%); /* Start off-screen */
    transition: transform 0.3s ease;
    overflow-y: auto; /* Enable scrolling for long menus */
    box-sizing: border-box;
    z-index: 1000; /* Below hamburger menu, above content */
  }

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

  .nav-container {
    flex-direction: column;
    align-items: flex-start; /* Align links to the left */
    padding: 0 15px;
    height: auto; /* Allow content to dictate height */
    max-width: none;
    width: 100%;
  }

  .nav-link {
    width: 100%;
    padding: 12px 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    white-space: normal; /* Allow nav links to wrap */
    box-sizing: border-box;
  }

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

  .mobile-overlay {
    display: none; /* Hidden by default */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999; /* Below menu, above content */
    transition: opacity 0.3s ease;
    opacity: 0;
  }

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

  body.no-scroll {
    overflow: hidden;
  }

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

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

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