:root { --header-offset: 122px; --primary-color: #2F6BFF; --secondary-color: #6FA3FF; --bg-color: #F4F7FB; --card-bg: #FFFFFF; --text-main: #1F2D3D; --border-color: #D6E2FF; --glow-color: #A5C4FF; }
* { box-sizing: border-box; }
body { padding-top: var(--header-offset); margin: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(--bg-color); color: var(--text-main); }
.site-header { position: fixed; top: 0; left: 0; right: 0; width: 100%; z-index: 1000; background-color: var(--card-bg); box-shadow: 0 4px 16px rgba(47, 107, 255, 0.18); }
.header-top { box-sizing: border-box; height: 68px; min-height: 68px; display: flex; align-items: center; overflow: hidden; background: linear-gradient(180deg, #1E4FD6 0%, #2F6BFF 100%); 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-left: 24px; padding-right: 24px; gap: 16px; }
.logo { display: inline-block; font-size: 26px; font-weight: 800; color: #FFFFFF; text-decoration: none; letter-spacing: 0.5px; white-space: nowrap; text-shadow: 0 2px 6px rgba(0, 0, 0, 0.25); }
.logo img { display: block; max-height: 60px; height: auto; width: auto; max-width: 280px; object-fit: contain; }
.hamburger-menu { display: none; flex-direction: column; justify-content: center; align-items: center; gap: 5px; width: 42px; height: 42px; background: rgba(255, 255, 255, 0.15); border: 1px solid rgba(255, 255, 255, 0.35); border-radius: 8px; cursor: pointer; padding: 0; z-index: 1001; }
.hamburger-menu span { display: block; width: 22px; height: 2.5px; background-color: #FFFFFF; border-radius: 2px; transition: transform 0.3s ease, opacity 0.3s ease; }
.hamburger-menu.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.hamburger-menu.active span:nth-child(2) { opacity: 0; }
.hamburger-menu.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }
.desktop-nav-buttons { display: flex; gap: 12px; align-items: center; flex-shrink: 0; }
.btn { display: inline-block; text-decoration: none; font-weight: 700; text-align: center; border-radius: 8px; cursor: pointer; transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease; }
.btn-primary { background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%); color: #FFFFFF; padding: 10px 22px; font-size: 14px; border: 1px solid rgba(255, 255, 255, 0.4); box-shadow: 0 4px 12px rgba(47, 107, 255, 0.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(47, 107, 255, 0.5); filter: brightness(1.06); }
.btn-secondary { background: #FFFFFF; color: #2F6BFF; padding: 10px 22px; font-size: 14px; border: 1px solid #D6E2FF; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12); }
.btn-secondary:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(47, 107, 255, 0.28); background: #F4F7FB; }
.mobile-nav-buttons { box-sizing: border-box; display: none; min-height: 48px; }
.main-nav { box-sizing: border-box; height: 52px; min-height: 52px; display: flex; align-items: center; overflow: hidden; background-color: #EAF1FF; border-top: 1px solid #D6E2FF; width: 100%; }
.nav-container { box-sizing: border-box; height: 100%; width: 100%; max-width: 1200px; margin: 0 auto; display: flex; flex-direction: row; justify-content: center; align-items: center; padding: 0 20px; }
.nav-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: row; justify-content: center; align-items: center; gap: 4px; flex-wrap: nowrap; }
.nav-link { display: inline-block; text-decoration: none; color: #1F2D3D; font-size: 14px; font-weight: 600; padding: 8px 12px; border-radius: 6px; white-space: nowrap; transition: background-color 0.2s ease, color 0.2s ease; }
.nav-link:hover, .nav-link.active { background-color: #2F6BFF; color: #FFFFFF; }
.nav-overlay { display: none; }
.site-footer { background: linear-gradient(180deg, #1E4FD6 0%, #16327F 100%); color: #EAF1FF; margin-top: 0; width: 100%; }
.footer-container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; box-sizing: border-box; }
.footer-top-row { padding-top: 20px; }
.footer-slot-anchor-inner { min-height: 1px; }
.footer-top-grid { padding: 24px 0 8px; border-bottom: 1px solid rgba(165, 196, 255, 0.25); }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; align-items: start; }
.footer-col { min-width: 0; }
.footer-logo { display: inline-block; font-size: 24px; font-weight: 800; color: #FFFFFF; text-decoration: none; margin-bottom: 12px; letter-spacing: 0.5px; }
.footer-description { font-size: 14px; line-height: 1.7; color: #D6E2FF; margin: 0 0 12px; word-wrap: break-word; overflow-wrap: break-word; }
.footer-heading { font-size: 16px; font-weight: 700; color: #FFFFFF; margin: 0 0 14px; position: relative; padding-bottom: 8px; }
.footer-heading::after { content: ''; position: absolute; left: 0; bottom: 0; width: 32px; height: 2px; background-color: #A5C4FF; border-radius: 2px; }
.footer-nav { list-style: none; margin: 0; padding: 0; }
.footer-nav li { margin-bottom: 10px; }
.footer-nav a { color: #D6E2FF; text-decoration: none; font-size: 14px; transition: color 0.2s ease, padding-left 0.2s ease; }
.footer-nav a:hover { color: #FFFFFF; padding-left: 4px; }
.footer-dynamic-col { min-height: 1px; }
.footer-mid { padding: 20px 0; border-bottom: 1px solid rgba(165, 196, 255, 0.25); }
.footer-mid-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.footer-bottom-anchor { padding: 12px 0; }
.footer-bottom { background-color: rgba(0, 0, 0, 0.18); padding: 18px 0; }
.footer-copyright { margin: 0; text-align: center; font-size: 13px; color: #D6E2FF; }
@media (max-width: 768px) {
  :root { --header-offset: 110px; }
  .header-top { height: 60px !important; min-height: 60px !important; }
  .header-container { width: 100%; max-width: none; padding-left: 15px; padding-right: 15px; position: relative; height: 100%; }
  .hamburger-menu { display: flex; flex-shrink: 0; }
  .logo { flex: 1 !important; display: flex !important; justify-content: center !important; align-items: center !important; font-size: 21px; text-align: center; }
  .logo img { display: block !important; max-width: 100%; height: auto; max-height: 56px !important; }
  .desktop-nav-buttons { display: none !important; }
  .mobile-nav-buttons { display: flex !important; align-items: center; justify-content: center; width: 100%; max-width: 100%; box-sizing: border-box; padding-left: 15px; padding-right: 15px; overflow: hidden; gap: 10px; flex-wrap: nowrap; height: 48px; min-height: 48px; background-color: #FFFFFF; }
  .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; box-shadow: none; }
  .main-nav { display: none; flex-direction: column; position: fixed; top: 0; left: 0; width: 84%; max-width: 320px; height: 100vh; min-height: 100vh; padding-top: 76px; background-color: #FFFFFF; box-shadow: 4px 0 20px rgba(0, 0, 0, 0.2); transform: translateX(-100%); transition: transform 0.3s ease; overflow-y: auto; z-index: 1001; border-top: none; }
  .main-nav.active { display: block; transform: translateX(0); }
  .nav-container { width: 100%; max-width: none; height: auto; flex-direction: column; justify-content: flex-start; align-items: stretch; padding: 12px 16px; }
  .nav-list { flex-direction: column; justify-content: flex-start; align-items: stretch; width: 100%; gap: 4px; }
  .nav-list li { width: 100%; }
  .nav-link { display: block; width: 100%; font-size: 15px; padding: 12px 14px; border-radius: 8px; color: #1F2D3D; }
  .nav-overlay { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background-color: rgba(0, 0, 0, 0.5); z-index: 999; }
  .nav-overlay.active { display: block; }
  body.no-scroll { overflow: hidden; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-mid-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .footer-description { font-size: 13px; }
  .page-content img { max-width: 100% !important; height: auto !important; display: block; }
  .page-content { overflow-x: hidden; max-width: 100%; }
  body { overflow-x: hidden; }
}
@media (max-width: 480px) {
  .footer-mid-grid { grid-template-columns: 1fr; }
}
/* 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;
}