:root { --header-offset: 122px; }
body { margin: 0; padding-top: var(--header-offset); font-family: 'Arial', sans-serif; color: #1F2D3D; background-color: #F4F7FB; overflow-x: hidden; }

.site-header { position: fixed; top: 0; left: 0; right: 0; width: 100%; z-index: 1000; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); background-color: #F4F7FB; }

.header-top { box-sizing: border-box; min-height: 68px; height: 68px; display: flex; align-items: center; overflow: hidden; background-color: #1A4BCC; 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; }

.logo { color: #FFFFFF; font-size: 24px; font-weight: bold; text-decoration: none; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: flex; align-items: center; }
.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 { box-sizing: border-box; display: none; min-height: 48px; width: 100%; background-color: #F4F7FB; box-shadow: 0 2px 5px rgba(0,0,0,0.05); }

.btn { background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%); color: #FFFFFF; padding: 10px 18px; border-radius: 5px; text-decoration: none; font-weight: bold; font-size: 14px; text-align: center; white-space: nowrap; transition: background-color 0.3s ease; border: none; cursor: pointer; box-shadow: 0 2px 5px rgba(0,0,0,0.2); }
.btn:hover { opacity: 0.9; }

.main-nav { box-sizing: border-box; min-height: 52px; height: 52px; display: flex; align-items: center; overflow: hidden; background-color: #E0EDFF; 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 { color: #1F2D3D; text-decoration: none; padding: 10px 15px; font-weight: 600; font-size: 15px; white-space: nowrap; transition: color 0.3s ease; }
.nav-link:hover { color: #2F6BFF; }

.hamburger-menu { display: none; background: none; border: none; cursor: pointer; padding: 0; width: 30px; height: 24px; position: relative; z-index: 1001; margin-right: 15px; }
.hamburger-icon { display: block; width: 100%; height: 3px; background-color: #FFFFFF; position: absolute; top: 50%; left: 0; transform: translateY(-50%); transition: background-color 0.3s ease, transform 0.3s ease; }
.hamburger-icon::before, .hamburger-icon::after { content: ''; display: block; width: 100%; height: 3px; background-color: #FFFFFF; position: absolute; left: 0; transition: transform 0.3s ease; }
.hamburger-icon::before { top: -9px; }
.hamburger-icon::after { top: 9px; }
.hamburger-menu.active .hamburger-icon { background-color: transparent; }
.hamburger-menu.active .hamburger-icon::before { transform: translateY(9px) rotate(45deg); }
.hamburger-menu.active .hamburger-icon::after { transform: translateY(-9px) rotate(-45deg); }

.mobile-menu-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.5); z-index: 999; }
.mobile-menu-overlay.active { display: block; }

/* Footer Styles */
.site-footer { background-color: #1F2D3D; color: #D6E2FF; padding: 40px 20px 20px; font-size: 14px; line-height: 1.6; }
.footer-top-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; max-width: 1200px; margin: 0 auto 30px; }
.footer-col h3 { color: #6FA3FF; font-size: 16px; margin-bottom: 15px; }
.footer-col p { color: #D6E2FF; }
.footer-logo { color: #6FA3FF; font-size: 22px; font-weight: bold; text-decoration: none; display: block; margin-bottom: 15px; }
.footer-nav { list-style: none; padding: 0; margin: 0; }
.footer-nav li { margin-bottom: 8px; }
.footer-nav a { color: #D6E2FF; text-decoration: none; transition: color 0.3s ease; }
.footer-nav a:hover { color: #2F6BFF; }
.footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid #3A4A5A; color: #D6E2FF; max-width: 1200px; margin: 0 auto; }
.footer-bottom p { margin: 0; }

.footer-slot-anchor-inner { min-height: 10px; }

/* Responsive Styles */
@media (max-width: 768px) {
  :root { --header-offset: 110px; }

  .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-top { min-height: 60px !important; height: 60px !important; background-color: #1A4BCC; }
  .header-container { padding: 0 15px; max-width: none; position: relative; }
  .logo { flex: 1 !important; display: flex !important; justify-content: center !important; align-items: center !important; max-width: calc(100% - 100px); }
  .logo img { max-height: 56px !important; }
  .desktop-nav-buttons { display: none !important; }
  .mobile-nav-buttons { display: flex !important; min-height: 48px; align-items: center; justify-content: center; width: 100%; max-width: 100%; box-sizing: border-box; padding: 0 15px; overflow: hidden; gap: 10px; flex-wrap: nowrap; background-color: #F4F7FB; }
  .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; }

  .hamburger-menu { display: block; position: absolute; left: 15px; top: 50%; transform: translateY(-50%); }
  .main-nav { display: none; position: fixed; top: 0; left: 0; width: 250px; height: 100vh; background-color: #E0EDFF; flex-direction: column; justify-content: flex-start; align-items: flex-start; padding-top: 60px; transform: translateX(-100%); transition: transform 0.3s ease; z-index: 1000; overflow-y: auto; box-shadow: 2px 0 10px rgba(0,0,0,0.1); }
  .main-nav.active { display: flex; transform: translateX(0); }
  .nav-container { flex-direction: column; align-items: flex-start; padding: 0; width: 100%; max-width: none; }
  .nav-link { width: 100%; padding: 12px 20px; border-bottom: 1px solid rgba(0,0,0,0.05); }
  .nav-link:last-child { border-bottom: none; }

  .footer-top-grid { grid-template-columns: 1fr; gap: 20px; }
  .footer-col { text-align: center; }
  .footer-col ul { text-align: center; }
  .footer-logo { margin-left: auto; margin-right: auto; }
}
/* 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;
  }
}