:root{--header-offset:122px;--primary:#26A9E0;--primary-dark:#1a7fa8;--primary-light:#e0f2fa;--white:#ffffff;--black:#000000;--text-dark:#222222;--text-muted:#555555;--border-light:#e0e0e0;--login:#EA7C07;--download:#1a7fa8;--shadow:0 4px 12px rgba(0,0,0,0.12);--logo-font:'Segoe UI',system-ui,-apple-system,sans-serif}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{padding-top:var(--header-offset);font-family:'Segoe UI',Arial,sans-serif;line-height:1.6;background-color:#ffffff}.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background-color:#ffffff;box-shadow:var(--shadow);border-bottom:2px solid var(--primary)}.site-header .header-top{width:100%;background-color:var(--primary);min-height:68px;display:flex;align-items:center}.site-header .header-top .header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding-left:24px;padding-right:24px;width:100%}.site-header .logo{font-family:var(--logo-font);font-size:1.9rem;font-weight:800;color:var(--black);text-decoration:none;line-height:1.2;letter-spacing:1px;display:inline-flex;align-items:center;gap:6px}.site-header .logo:hover{opacity:0.85}.site-header .logo::first-letter{color:var(--primary)}.site-header .desktop-nav-buttons{display:flex;align-items:center;justify-content:flex-end;gap:12px}.site-header .btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;font-size:0.9rem;font-weight:600;border-radius:6px;box-shadow:0 3px 8px rgba(0,0,0,0.15);text-decoration:none;min-height:44px;color:#ffffff;border:2px solid transparent;cursor:pointer;white-space:nowrap}.site-header .btn-primary{background-color:var(--primary-dark);border-color:var(--primary-dark)}.site-header .btn-primary:hover{background-color:#0d6b8d;border-color:#0d6b8d}.site-header .btn-login{background-color:var(--login);border-color:var(--login)}.site-header .btn-login:hover{background-color:#c96406;border-color:#c96406}.site-header .btn-download{background-color:var(--download);border-color:var(--download)}.site-header .btn-download:hover{background-color:#0d5f80;border-color:#0d5f80}.site-header .main-nav{background-color:#ffffff;border-top:1px solid #eeeeee;width:100%;display:flex;min-height:52px;align-items:center}.site-header .main-nav .nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;flex-wrap:wrap;justify-content:center;align-items:center;padding:6px 20px;width:100%;gap:4px 8px}.site-header .main-nav .nav-container a{color:var(--text-dark);text-decoration:none;font-size:0.9rem;font-weight:500;padding:8px 12px;border-radius:5px;transition:color 0.3s ease,background-color 0.3s ease;white-space:nowrap}.site-header .main-nav .nav-container a:hover{color:var(--primary);background-color:var(--primary-light)}.site-header .mobile-header-row{display:none}.site-header .mobile-nav-buttons{display:none}.site-header .hamburger-menu{display:none}.site-header .mobile-menu-overlay{display:none}.site-footer{background-color:#17232b;color:#e8f0f5;padding:50px 20px 0;font-size:0.95rem;margin-top:50px}.site-footer .footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;padding-bottom:35px;border-bottom:1px solid #2a3b47}.site-footer .footer-brand .footer-logo{display:inline-block;font-family:var(--logo-font);font-size:2rem;font-weight:800;color:#ffffff;text-decoration:none;margin-bottom:15px}.site-footer .footer-brand .footer-logo::first-letter{color:var(--primary)}.site-footer .footer-brand p{color:#aab8c2;line-height:1.7}.site-footer .footer-col h4{color:var(--primary);font-size:1.2rem;font-weight:600;margin-bottom:18px;text-transform:uppercase;letter-spacing:0.5px}.site-footer .footer-col ul{list-style:none}.site-footer .footer-col ul li{margin-bottom:12px}.site-footer .footer-col ul li a{color:#cbd5dd;text-decoration:none;transition:color 0.3s ease}.site-footer .footer-col ul li a:hover{color:var(--primary)}.site-footer .footer-nav{display:flex;flex-direction:column;gap:12px}.site-footer .footer-bottom{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:20px 0;text-align:center;color:#8aa0ad}.site-footer .footer-bottom p{margin:0}.site-footer .footer-bottom .footer-disclaimer{font-size:0.9rem;font-weight:400;color:#8aa0ad}.site-footer a{color:inherit}.site-footer a:hover{color:#26a9e0;text-decoration:none}.site-footer *{transition:color 0.3s ease}@media(max-width:768px){:root{--header-offset:146px}body{padding-top:var(--header-offset)}.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-header{min-height:60px}.site-header .header-top{display:none}.site-header .mobile-header-row{display:flex;align-items:center;justify-content:space-between;padding:0 10px;padding-top:12px;padding-bottom:0;min-height:44px;width:100%}.site-header .mobile-logo{order:1;margin:0 auto;font-size:1.7rem}.site-header .hamburger-menu{display:flex;order:0;flex-direction:column;justify-content:center;width:42px;height:42px;padding:8px;background:transparent;border:none;cursor:pointer;z-index:1001;position:relative;align-items:center;gap:5px;flex-shrink:0}.site-header .hamburger-menu .bar{display:block;width:22px;height:2px;background-color:var(--primary-dark);border-radius:2px;transition:all 0.3s ease-in-out;margin:0}.site-header .hamburger-menu.active .bar:nth-child(1){transform:translateY(7px) rotate(45deg)}.site-header .hamburger-menu.active .bar:nth-child(2){opacity:0}.site-header .hamburger-menu.active .bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.site-header .mobile-header-spacer{width:42px;flex-shrink:0}.site-header .mobile-nav-buttons{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;padding:10px 14px;background-color:var(--primary);width:100%;min-height:48px;align-items:center}.site-header .mobile-nav-buttons .btn{flex:1 1 auto;max-width:180px;padding:8px 12px;font-size:0.85rem;min-height:34px;min-width:110px;color:#ffffff;border-radius:6px}.site-header .mobile-nav-buttons .btn-primary{background-color:var(--primary-dark)}.site-header .mobile-nav-buttons .btn-login{background-color:var(--login)}.site-header .mobile-nav-buttons .btn-download{background-color:var(--download)}.site-header .main-nav{display:none;position:fixed;top:0;left:0;bottom:0;width:78%;max-width:340px;background-color:#ffffff;box-shadow:2px 0 20px rgba(0,0,0,0.2);flex-direction:column;align-items:flex-start;justify-content:flex-start;transform:translateX(-100%);transition:transform 0.3s ease-in-out;z-index:1000;overflow-y:auto;padding-top:25px;min-height:100vh}.site-header .main-nav .nav-container{display:flex;flex-direction:column;align-items:flex-start;width:100%;padding:10px 15px}.site-header .main-nav .nav-container a{font-size:1rem;padding:12px 12px;width:100%;text-align:left}.site-header .main-nav.active{display:block;transform:translateX(0)}.site-header .main-nav.active .nav-container{display:flex}.site-header .mobile-menu-overlay{display:block;position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,0.6);z-index:999;visibility:hidden;opacity:0;transition:opacity 0.3s ease,visibility 0.3s ease}.site-header .mobile-menu-overlay.active{visibility:visible;opacity:1}.site-header .header-top .header-container{width:100%;max-width:none;padding-left:15px;padding-right:15px}.site-header .main-nav .nav-container{width:100%;max-width:none;padding-left:15px;padding-right:15px}.site-footer .footer-container{grid-template-columns:1fr 1fr;gap:20px}.site-footer .footer-brand{grid-column:1/-1}.site-footer .footer-bottom{flex-direction:column;gap:8px}.site-footer .footer-bottom p{font-size:0.9rem}}
/* 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;
}