.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:#fff;box-shadow:0 2px 15px rgba(31,45,61,0.15);min-height:auto}.site-header .header-top{background:linear-gradient(135deg,#1a3a8a 0%,#2F6BFF 100%);width:100%;display:block}.site-header .header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:10px 25px;min-height:68px;box-sizing:border-box}.site-header .logo{display:inline-block;color:#fff;font-size:28px;font-weight:800;text-decoration:none;letter-spacing:1px;text-transform:uppercase;line-height:1.2}.site-header .logo:hover{color:#fff}.site-header .desktop-nav-buttons{display:flex;align-items:center;gap:12px}.site-header .btn{display:inline-block;text-decoration:none;border:none;cursor:pointer;font-weight:600;padding:8px 18px;border-radius:6px;transition:all 0.3s ease;font-family:inherit}.site-header .btn-register{background:linear-gradient(180deg,#4A8BFF 0%,#2F6BFF 100%);color:#fff;box-shadow:0 2px 8px rgba(74,139,255,0.4)}.site-header .btn-register:hover{transform:translateY(-2px);box-shadow:0 4px 15px rgba(74,139,255,0.5)}.site-header .btn-download{background:linear-gradient(180deg,#4A8BFF 0%,#2F6BFF 100%);color:#fff;box-shadow:0 2px 8px rgba(74,139,255,0.4)}.site-header .btn-download:hover{transform:translateY(-2px);box-shadow:0 4px 15px rgba(74,139,255,0.5)}.site-header .main-nav{background:#F4F7FB;width:100%;display:flex;border-top:1px solid #D6E2FF;border-bottom:1px solid #D6E2FF;position:static}.site-header .nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 20px;min-height:52px;flex-wrap:wrap;box-sizing:border-box}.site-header .nav-link{display:inline-flex;align-items:center;color:#1F2D3D;text-decoration:none;font-size:15px;font-weight:600;padding:12px 16px;transition:color 0.3s ease;border-bottom:3px solid transparent;line-height:1.2}.site-header .nav-link:hover{color:#2F6BFF;border-bottom-color:#2F6BFF}.site-header .nav-link.active{color:#2F6BFF;border-bottom-color:#2F6BFF}.site-header .hamburger-menu{display:none}.site-header .mobile-menu-overlay{display:none}.site-header .mobile-nav-buttons{display:none}:root{--header-offset:122px}body{padding-top:var(--header-offset);margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif}.page-content{padding:10px 0}.page-content img{max-width:100%;height:auto}.site-footer{background:linear-gradient(135deg,#1a3a8a 0%,#1F2D3D 100%);color:#fff;padding:50px 0 0;width:100%;margin-top:40px}.site-footer .footer-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;gap:30px;padding:0 25px 30px;box-sizing:border-box}.site-footer .footer-column{flex:1;min-width:180px}.site-footer .footer-brand{flex:1.4}.site-footer .footer-logo{display:inline-block;color:#fff;font-size:28px;font-weight:800;text-decoration:none;letter-spacing:1px;text-transform:uppercase;margin-bottom:15px}.site-footer .footer-desc{font-size:14px;line-height:1.7;color:rgba(255,255,255,0.85);margin:0 0 10px}.site-footer .footer-title{color:#fff;font-size:17px;font-weight:700;margin:0 0 16px;letter-spacing:0.5px;text-transform:uppercase}.site-footer .footer-nav{list-style:none;padding:0;margin:0}.site-footer .footer-nav li{margin-bottom:10px}.site-footer .footer-nav a{color:rgba(255,255,255,0.8);text-decoration:none;font-size:14px;transition:color 0.3s ease, padding-left 0.3s ease;line-height:1.6}.site-footer .footer-nav a:hover{color:#6FA3FF;padding-left:5px}.site-footer .footer-bottom{border-top:1px solid rgba(255,255,255,0.15);padding:16px 25px;text-align:center;background:rgba(0,0,0,0.15)}.site-footer .footer-bottom p{margin:0;font-size:14px;color:rgba(255,255,255,0.75)}@media (max-width:768px){:root{--header-offset:110px}.header-container{width:100%;max-width:none;padding-left:15px;padding-right:15px;min-height:60px}.nav-container{width:100%;max-width:none;padding-left:15px;padding-right:15px}.site-header .header-top{background:linear-gradient(135deg,#1a3a8a 0%,#2F6BFF 100%)}.site-header .header-top{display:flex;justify-content:center;align-items:center;position:relative;min-height:60px}.site-header .header-container{display:flex;justify-content:center;align-items:center;position:relative}.site-header .logo{position:absolute;left:50%;transform:translateX(-50%);font-size:24px}.site-header .desktop-nav-buttons{display:none}.site-header .main-nav{display:none;flex-direction:column;position:fixed;top:0;right:0;width:280px;height:100vh;background:#F4F7FB;z-index:1002;box-shadow:-2px 0 15px rgba(0,0,0,0.15);transform:translateX(100%);transition:transform 0.3s ease;overflow-y:auto;padding-top:60px;border-left:1px solid #D6E2FF}.site-header .main-nav.active{display:flex;transform:translateX(0)}.site-header .nav-container{flex-direction:column;align-items:flex-start;justify-content:flex-start;padding:10px 0;width:100%}.site-header .nav-link{width:100%;padding:14px 20px;font-size:15px;border-bottom:1px solid rgba(47,107,255,0.1);border-left:4px solid transparent}.site-header .nav-link.active{border-left-color:#2F6BFF;background:rgba(47,107,255,0.08)}.site-header .hamburger-menu{display:block;position:absolute;left:15px;top:16px;z-index:1003;width:32px;height:32px;cursor:pointer;background:transparent;border:none;padding:0;display:flex;flex-direction:column;justify-content:center}.site-header .hamburger-menu span{display:block;width:28px;height:3px;background:#fff;margin:4px 0;border-radius:3px;transition:all 0.3s ease}.site-header .hamburger-menu.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}.site-header .hamburger-menu.active span:nth-child(2){opacity:0}.site-header .hamburger-menu.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.site-header .mobile-menu-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.5);z-index:1001}.site-header .mobile-menu-overlay.active{display:block}.site-header .mobile-nav-buttons{display:block;background:#2F6BFF;padding:8px 15px;border-top:1px solid rgba(255,255,255,0.2)}.site-header .mobile-nav-buttons-inner{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.site-header .mobile-nav-buttons .btn{padding:7px 18px;font-size:14px}.site-header.mobile-menu-open .main-nav{display:flex}.page-content img{max-width:100%!important;height:auto!important;display:block}.page-content{overflow-x:hidden;max-width:100%}body{overflow-x:hidden}.site-footer .footer-container{flex-direction:column;gap:25px;padding-left:15px;padding-right:15px}.site-footer .footer-bottom{padding:12px 15px}.site-footer .footer-bottom p{font-size:13px}}
/* 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;
}