:root{--header-offset:122px}.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background-color:#fff;box-shadow:0 4px 20px rgba(0,0,0,.15);font-family:'Segoe UI',system-ui,-apple-system,sans-serif}.header-top{background-color:#1a3a5c;width:100%;border-bottom:1px solid rgba(255,255,255,.1)}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:0 30px;min-height:68px;flex-wrap:nowrap}.logo{font-size:1.35rem;font-weight:800;color:#fff;text-decoration:none;letter-spacing:.5px;display:inline-flex;align-items:center;gap:8px;white-space:nowrap;transition:opacity .2s}.logo:hover{opacity:.85}.desktop-nav-buttons{display:flex;align-items:center;gap:10px}.btn{display:inline-block;padding:10px 18px;border-radius:6px;font-size:.85rem;font-weight:700;text-decoration:none!important;transition:all .3s ease;border:2px solid transparent;line-height:1.2;white-space:nowrap}.btn-download{background:#fff;color:#1a3a5c;border-color:#fff}.btn-download:hover{background:#f0f0f0;transform:translateY(-2px)}.btn-login{background:#EA7C07;color:#fff;border-color:#EA7C07}.btn-login:hover{background:#d47006;transform:translateY(-2px);box-shadow:0 4px 12px rgba(234,124,7,.3)}.btn-register{background:linear-gradient(135deg,#26A9E0,#1789b8);color:#fff;border-color:#26A9E0;box-shadow:0 4px 15px rgba(38,169,224,.3)}.btn-register:hover{background:linear-gradient(135deg,#1789b8,#26A9E0);transform:translateY(-2px)}.main-nav{background-color:#26A9E0;width:100%;display:flex;justify-content:center;min-height:52px}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 20px;flex-wrap:wrap}.nav-link{display:inline-block;color:#fff;text-decoration:none;font-size:.85rem;font-weight:600;padding:16px 10px;margin:0 2px;text-align:center;transition:background .3s,color .3s;position:relative;white-space:nowrap;text-transform:none;letter-spacing:.3px}.nav-link:before{content:'';position:absolute;bottom:0;left:10%;right:10%;height:3px;background:#fff;transform:scaleX(0);transition:transform .3s ease;border-radius:2px 2px 0 0}.nav-link:hover:before,.nav-link.active:before{transform:scaleX(1)}.nav-link:hover,.nav-link.active{background:rgba(255,255,255,.15);color:#fff}.mobile-menu-overlay{display:none}.mobile-nav-buttons{display:none}.hamburger-menu{display:none}body{padding-top:var(--header-offset);margin:0}.site-footer{background-color:#1a3a5c;color:#fff;font-family:'Segoe UI',system-ui,-apple-system,sans-serif;padding:60px 0 0;position:relative}.footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding:20px 30px 50px}.footer-column h3.footer-title{color:#26A9E0;font-size:1rem;font-weight:700;margin:0 0 20px;letter-spacing:.5px;border-bottom:2px solid rgba(38,169,224,.3);padding-bottom:10px}.footer-column a{display:block;color:#b8c7d9;text-decoration:none;font-size:.9rem;margin-bottom:12px;transition:color .3s,padding-left .3s;line-height:1.4}.footer-column a:hover{color:#26A9E0;padding-left:5px}.footer-info .footer-logo{font-size:1.3rem;font-weight:800;color:#fff;text-decoration:none;display:inline-block;margin-bottom:15px}.footer-info .footer-desc{color:#a0b3c8;font-size:.85rem;line-height:1.8;margin-bottom:15px;max-width:300px}.footer-info .footer-legal{display:inline-block;background:rgba(255,255,255,.1);padding:4px 10px;border-radius:4px;font-size:.8rem;color:#ffd700;margin:0}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;text-align:center}.footer-bottom p{color:#8aa5c0;font-size:.8rem;margin:0}.footer-bottom .copyright-year{color:#26A9E0;font-weight:700}.mobile-menu-overlay.active{display:none}@media(max-width:768px){:root{--header-offset:110px}.site-header{background:#fff}.header-top{background:#1a3a5c;position:relative}.header-container{width:100%;max-width:none;padding:0 15px;display:flex;justify-content:space-between;align-items:center;min-height:60px}.logo{flex:1;font-size:1.05rem;text-align:center;color:#fff;white-space:normal;width:auto}.logo br{display:none}.desktop-nav-buttons{display:none}.mobile-nav-buttons{width:100%;display:flex;justify-content:center;align-items:center;gap:8px;background:#fff;padding:8px 10px;border-bottom:1px solid #eee;min-height:48px;flex-wrap:nowrap}.mobile-nav-buttons .btn{padding:8px 10px;font-size:.72rem;flex:1;max-width:120px;text-align:center}.btn-mobile-download{background:#fff;color:#1a3a5c;border:2px solid #1a3a5c!important}.btn-mobile-login{background:#EA7C07;color:#fff;border-color:#EA7C07!important}.btn-mobile-register{background:linear-gradient(135deg,#26A9E0,#1789b8);color:#fff;border-color:#26A9E0!important}.main-nav{display:none;position:fixed;top:0;left:0;width:75%;height:100%;background-color:#fff;flex-direction:column;justify-content:flex-start;align-items:stretch;z-index:1001;box-shadow:2px 0 20px rgba(0,0,0,.3);overflow-y:auto;transition:display .3s ease,transform .3s ease;-webkit-overflow-scrolling:touch;padding-top:60px}.main-nav.active{display:flex;transform:translateX(0)}.main-nav:not(.active){transform:translateX(-100%)}.nav-container{flex-direction:column;align-items:flex-start;padding:15px 0;width:100%;max-width:none;margin:0;justify-content:flex-start;gap:0}.nav-link{color:#333;font-size:.9rem;padding:14px 20px;border-bottom:1px solid #f0f0f0;width:100%;text-align:left;display:block;white-space:normal}.nav-link:before{display:none}.nav-link:hover,.nav-link.active{background:#e8f4fd;color:#26A9E0}.mobile-menu-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.5);z-index:1000;cursor:pointer}.mobile-menu-overlay.active{display:block}.hamburger-menu{display:flex;flex-direction:column;justify-content:center;align-items:center;width:40px;height:40px;background:transparent;border:none;cursor:pointer;padding:0;margin:0;z-index:1002;gap:0}.hamburger-menu span{display:block;width:22px;height:2px;background:#fff;margin:3px 0;transition:all .3s ease;border-radius:2px}.hamburger-menu.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px);background:#fff}.hamburger-menu.active span:nth-child(2){opacity:0}.hamburger-menu.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px);background:#fff}body{overflow-x:hidden}.page-content{overflow-x:hidden;max-width:100%}.footer-container{grid-template-columns:1fr 1fr;gap:25px;padding:20px 15px 30px}body.no-scroll{overflow:hidden}.footer-col-3{grid-column:1/3}}@media(max-width:480px){.footer-container{grid-template-columns:1fr;gap:20px}.mobile-nav-buttons .btn{max-width:100px}.header-container{flex-wrap:wrap}.logo{order:1;flex:0 1 auto;text-align:center;font-size:.95rem;margin:0;width:auto}.hamburger-menu{order:0}.mobile-nav-buttons{order:3;flex-basis:100%;margin-top:0;padding:6px 10px}.main-nav{width:85%}.main-nav.active{width:85%}.footer-bottom{padding:15px 10px}.mobile-nav-buttons .btn-download{display:none}.footer-info .footer-desc{max-width:100%}}
/* 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;
}