.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background-color:#E53935;box-shadow:0 2px 8px rgba(0,0,0,0.3);min-height:auto}.header-top{background-color:#A81E1B;width:100%}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding-left:30px;padding-right:30px;min-height:68px}.logo{font-size:28px;font-weight:900;color:#FFFFFF;text-decoration:none;letter-spacing:1px;text-transform:uppercase;display:inline-block;line-height:1.2}.logo:hover{color:#FFD700;text-decoration:none}.desktop-nav-buttons{display:flex;align-items:center;gap:12px}.btn{display:inline-block;padding:10px 22px;border-radius:24px;font-weight:700;font-size:14px;line-height:1.4;text-decoration:none;text-align:center;cursor:pointer;border:none;transition:all 0.3s ease;color:#FFFFFF}.btn:hover{text-decoration:none;transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,0.3)}.btn-download{background:linear-gradient(180deg,#FF5A4F 0%,#E53935 100%)}.btn-register{background:linear-gradient(180deg,#FF5A4F 0%,#E53935 100%)}.btn-login{background:linear-gradient(180deg,#FF5A4F 0%,#E53935 100%)}.main-nav{background-color:#E53935;width:100%;display:flex;position:static;flex-direction:row;box-shadow:0 2px 4px rgba(0,0,0,0.1)}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:10px 20px;width:100%}.nav-link{color:#FFFFFF;font-size:15px;font-weight:600;padding:10px 16px;text-decoration:none;white-space:nowrap;transition:background-color 0.2s ease;border-radius:4px 4px 0 0}.nav-link:hover{background-color:rgba(255,255,255,0.2);text-decoration:none}.nav-link.active{background-color:#C62828;color:#FFFFFF}.hamburger-menu{display:none;background:none;border:none;cursor:pointer;padding:8px;z-index:1002;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center}.hamburger-menu span{display:block;width:24px;height:3px;background-color:#FFFFFF;margin:3px 0;transition:all 0.3s ease;border-radius:2px}.hamburger-menu.active span:nth-child(1){transform:rotate(45deg) translate(6px,6px)}.hamburger-menu.active span:nth-child(2){opacity:0}.hamburger-menu.active span:nth-child(3){transform:rotate(-45deg) translate(6px,-6px)}.mobile-nav-buttons{display:none}.mobile-menu-overlay{display:none}.site-footer{background-color:#A81E1B;color:#FFFFFF;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif}.footer-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;flex-wrap:wrap;padding:40px 30px 30px}.footer-column{margin-bottom:20px;padding-right:20px}.footer-company{flex:1.2;min-width:220px}.footer-logo{font-size:32px;font-weight:900;color:#FFD700;text-decoration:none;display:inline-block;margin-bottom:12px}.footer-logo:hover{text-decoration:none;color:#FFC107}.footer-description{font-size:14px;line-height:1.7;color:#FFE0B2;margin:0}.footer-column-nav{flex:0.8}.footer-heading{font-size:18px;color:#FFD700;margin-bottom:15px;font-weight:700;text-transform:uppercase;letter-spacing:1px}.footer-nav{display:flex;flex-direction:column;gap:8px}.footer-nav a{color:#FFFFFF;font-size:14px;text-decoration:none;padding:4px 0;transition:color 0.2s ease,text-decoration 0.2s ease;line-height:1.5}.footer-nav a:hover{color:#FFD700;text-decoration:none}.footer-bottom{border-top:1px solid rgba(255,255,255,0.3);margin-top:0;padding:16px 30px;background-color:#8E1512;text-align:center}.footer-bottom p{margin:0;font-size:13px;color:#FFE0B2;line-height:1.6}.footer-bottom .copyright-year{font-weight:700;color:#FFFFFF}body{padding-top:var(--header-offset)}:root{--header-offset:122px}.page-content img{max-width:100%!important;height:auto!important;display:block}.page-content{overflow-x:hidden;max-width:100%}body{overflow-x:hidden}.no-scroll{overflow:hidden}@media (max-width:768px){:root{--header-offset:110px}.header-top{background-color:#A81E1B}.header-container{width:100%;max-width:none;padding-left:15px;padding-right:15px;min-height:60px;gap:10px}.logo{font-size:22px;flex:none}.desktop-nav-buttons{display:none}.hamburger-menu{display:flex;order:1}.logo{order:2;margin-left:auto}.desktop-nav-buttons{order:3}.main-nav{background-color:#E53935;display:none;flex-direction:column;position:fixed;top:0;left:0;bottom:0;right:auto;width:280px;max-width:85%;height:100vh;overflow-y:auto;transform:translateX(-100%);transition:transform 0.35s ease;box-shadow:none;z-index:1001}.main-nav.active{display:flex;transform:translateX(0)}.main-nav .nav-container{flex-direction:column;align-items:stretch;padding-left:15px;padding-right:15px;padding-top:30px;padding-bottom:20px}.nav-link{font-size:16px;padding:14px 12px;text-align:left}body{padding-top:var(--header-offset)}:root{--header-offset:146px}.mobile-nav-buttons{display:flex;background-color:#C62828;width:100%;padding:10px 0;border-top:1px solid rgba(255,255,255,0.1)}.mobile-nav-container{display:flex;justify-content:center;align-items:center;gap:8px;width:100%;max-width:none;padding-left:15px;padding-right:15px}.mobile-nav-buttons .btn{padding:8px 14px;display:flex;align-items:center;justify-content:center;min-height:36px;font-size:12px;border-radius:20px}.mobile-nav-buttons .btn:hover{transform:none;box-shadow:0 2px 8px rgba(0,0,0,0.2)}.mobile-nav-buttons .btn-register{order:1}.mobile-nav-buttons .btn-download{order:0}.mobile-nav-buttons .btn-login{order:2}.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:998;transition:opacity 0.3s ease}.mobile-menu-overlay.active{display:block}.footer-container{flex-direction:column;padding:30px 20px 15px}.footer-column{flex:1;min-width:100%;padding-right:0}.footer-company{margin-bottom:25px}.footer-logo{font-size:28px}.footer-bottom{padding:12px 15px}.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 (min-width:769px) and (max-width:1024px){.header-container{max-width:960px;padding-left:20px;padding-right:20px}.nav-container{max-width:960px;padding-left:15px;padding-right:15px}.btn-register,.btn-download{padding:10px 18px;font-size:13px}.footer-container{max-width:960px}}
/* 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;
}