:root { --header-offset: 122px; --primary-color: #E53935; --secondary-color: #FF5A4F; --text-main-color: #333333; --card-bg-color: #FFFFFF; --bg-color: #F5F7FA; --border-color: #E0E0E0; }
body { padding-top: var(--header-offset); margin: 0; font-family: 'Arial', sans-serif; line-height: 1.6; color: var(--text-main-color); background-color: var(--bg-color); overflow-x: hidden; }
a { text-decoration: none; color: var(--primary-color); }
a:hover { text-decoration: underline; }

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  background-color: var(--card-bg-color); /* Neutral background for the whole header container */
  box-sizing: border-box;
}

.header-top {
  box-sizing: border-box;
  height: 68px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--primary-color); /* Darker background 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;
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: #FFFFFF;
  text-transform: uppercase;
  display: block;
  line-height: 1;
}

.logo:hover { text-decoration: none; }

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

.btn {
  padding: 10px 20px;
  border-radius: 5px;
  font-weight: bold;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  box-sizing: border-box;
}

.btn-primary {
  background: linear-gradient(180deg, var(--secondary-color) 0%, var(--primary-color) 100%);
  color: #FFFFFF;
  border: none;
}

.btn-primary:hover {
  opacity: 0.9;
  text-decoration: none;
}

.btn-secondary {
  background-color: #FFFFFF;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: #FFFFFF;
  text-decoration: none;
}

.mobile-nav-buttons {
  box-sizing: border-box;
  display: none; /* Hidden by default on desktop */
  min-height: 48px;
  width: 100%;
  background-color: #F8F8F8; /* A light background for the mobile button bar */
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.main-nav {
  box-sizing: border-box;
  height: 52px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--secondary-color); /* Lighter background for main nav */
  width: 100%;
  color: #fff;
}

.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;
  flex-wrap: nowrap;
}

.nav-link {
  color: #FFFFFF;
  padding: 0 15px;
  font-weight: bold;
  white-space: nowrap;
  line-height: 52px; /* Vertically align text in fixed height */
  display: block;
  transition: background-color 0.3s ease;
}

.nav-link:hover {
  background-color: rgba(255,255,255,0.1);
  text-decoration: none;
}

.hamburger-menu {
  display: none;
  width: 30px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 1001;
  padding: 0;
}

.hamburger-icon {
  display: block;
  width: 100%;
  height: 3px;
  background-color: #FFFFFF;
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  transition: all 0.3s ease;
}

.hamburger-icon::before, .hamburger-icon::after {
  content: '';
  display: block;
  width: 100%;
  height: 3px;
  background-color: #FFFFFF;
  position: absolute;
  left: 0;
  transition: all 0.3s ease;
}

.hamburger-icon::before { top: -8px; }
.hamburger-icon::after { top: 8px; }

.hamburger-menu.active .hamburger-icon {
  background-color: transparent;
}

.hamburger-menu.active .hamburger-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.hamburger-menu.active .hamburger-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

.overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.5);
  z-index: 999;
  backdrop-filter: blur(2px);
}

/* Footer Styles */
.site-footer {
  background-color: #222;
  color: #EEE;
  padding: 40px 20px 20px;
  font-size: 14px;
  line-height: 1.8;
  box-sizing: border-box;
}

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

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

.footer-col .footer-logo {
  font-size: 24px;
  font-weight: bold;
  color: #FFFFFF;
  text-transform: uppercase;
  display: block;
  margin-bottom: 15px;
}

.footer-col .footer-description {
  color: #BBB;
  margin-bottom: 15px;
  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: #BBB;
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  text-align: center;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid #444;
  color: #AAA;
}

.footer-slot-anchor-inner { min-height: 1px; }

@media (max-width: 768px) {
  :root { --header-offset: 110px; }
  body { overflow-x: hidden; }
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }

  .header-top {
    height: 60px !important;
    background-color: var(--primary-color);
  }
  .header-container {
    width: 100%;
    max-width: none;
    padding: 0 15px;
    position: relative; /* for logo absolute positioning if needed */
  }
  .logo {
    flex: 1 !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    font-size: 24px;
  }
  .desktop-nav-buttons { display: none !important; }
  .mobile-nav-buttons {
    display: flex !important;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    width: 100%; max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
    overflow: hidden;
    gap: 10px;
    flex-wrap: nowrap;
  }
  .mobile-nav-buttons .btn {
    flex: 1; min-width: 0;
    max-width: calc(50% - 5px);
    box-sizing: border-box;
    padding: 8px 12px;
    font-size: 13px;
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  .main-nav {
    height: 100vh; /* Full viewport height for mobile menu */
    width: 280px; /* Fixed width for slide-out menu */
    position: fixed;
    top: var(--header-offset); /* Start below header */
    left: 0;
    background-color: #333;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding-top: 20px;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    box-shadow: 2px 0 5px rgba(0,0,0,0.2);
    overflow-y: auto;
    z-index: 1001;
    display: none; /* Hidden by default, will be set to flex/block by JS when active */
  }

  .main-nav.active {
    transform: translateX(0);
    display: flex; /* Ensure it becomes visible */
  }

  .nav-container {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 15px;
    width: 100%;
    max-width: none;
    height: auto;
  }

  .nav-link {
    width: 100%;
    padding: 12px 15px;
    line-height: normal;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    color: #FFF;
  }
  .nav-link:last-child { border-bottom: none; }

  .hamburger-menu {
    display: block;
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
  }

  .overlay.active { display: block; }

  .footer-top-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .footer-col h3 { margin-top: 30px; }
  .footer-col:first-child h3 { margin-top: 0; }
  .footer-col .footer-logo { margin-left: auto; margin-right: auto; }
  .footer-nav { margin-bottom: 20px; }
}
/* 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;
}