.site-header{position:fixed;top:0;left:0;z-index:1000;width:100%;min-height:auto;background:#FFFFFF;box-shadow:0 2px 10px rgba(0,0,0,0.15);font-family:Arial,Helvetica,sans-serif}.header-top{width:100%;background:#1E90B0}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:12px 20px;box-sizing:border-box}.logo{display:inline-block;color:#FFFFFF;font-size:1.4rem;font-weight:bold;text-decoration:none;text-transform:uppercase;letter-spacing:1px;line-height:1.2}.logo:hover{color:#FFD700}.desktop-nav-buttons{display:flex;align-items:center;gap:10px}.btn{display:inline-block;text-decoration:none;font-weight:bold;border-radius:4px;padding:8px 20px;border:2px solid transparent;transition:all .3s ease;cursor:pointer;text-align:center;box-sizing:border-box;font-size:0.95rem}.btn-login{background:#EA7C07;color:#FFFFFF;border-color:#EA7C07}.btn-login:hover{background:#d06a00;border-color:#d06a00;transform:translateY(-2px);box-shadow:0 4px 8px rgba(234,124,7,0.4)}.btn-register{background:#26A9E0;color:#FFFFFF;border-color:#26A9E0}.btn-register:hover{background:#1a8ab8;border-color:#1a8ab8;transform:translateY(-2px);box-shadow:0 4px 8px rgba(38,169,224,0.4)}.main-nav{width:100%;display:flex;background:#FFFFFF;border-top:2px solid #26A9E0}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;flex-wrap:wrap;padding:0 10px;box-sizing:border-box}.nav-link{display:inline-block;color:#000000;text-decoration:none;font-weight:600;padding:10px 16px;font-size:0.95rem;transition:color .3s,background .3s;white-space:nowrap;border-bottom:3px solid transparent}.nav-link:hover{color:#26A9E0;background:rgba(38,169,224,0.08);border-bottom-color:#26A9E0}.nav-link.active{color:#26A9E0;border-bottom-color:#26A9E0}.hamburger-menu{display:none}.mobile-menu-overlay{display:none}.mobile-nav-buttons{display:none}.site-footer{background:#1e293b;color:#e2e8f0;margin-top:auto;font-family:Arial,Helvetica,sans-serif}.footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding:40px 20px;box-sizing:border-box}.footer-column h3{color:#26A9E0;font-size:1.1rem;margin-top:0;margin-bottom:15px;font-weight:700}.footer-logo{display:inline-block;color:#26A9E0;font-weight:bold;text-decoration:none;font-size:1.3rem;margin-bottom:12px;text-transform:uppercase;letter-spacing:1px}.footer-logo:hover{color:#FFFFFF}.footer-about p{color:#cbd5e1;font-size:0.9rem;line-height:1.6;margin-bottom:0}.footer-nav{list-style:none;padding:0;margin:0}.footer-nav li{margin-bottom:10px}.footer-nav a{color:#cbd5e1;text-decoration:none;font-size:0.9rem;transition:color .3s,padding-left .3s;padding:2px 0}.footer-nav a:hover{color:#26A9E0;padding-left:6px}.footer-bottom{background:#0f172a;text-align:center;padding:15px 20px;border-top:1px solid #334155}.footer-bottom p{margin:0;font-size:0.85rem;color:#94a3b8}.site-footer a{text-decoration:none}.site-footer a:hover{text-decoration:none}.site-footer .footer-nav li a{text-decoration:none}@media (max-width:768px){:root{--header-offset:146px}.site-header{min-height:auto}.header-top{background:#1E90B0}.header-container{width:100%;max-width:none;padding-left:15px;padding-right:15px;min-height:60px}.logo{font-size:1.1rem;text-align:center;flex:1;margin:0 10px 0 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.desktop-nav-buttons{display:none}.mobile-nav-buttons{display:flex;justify-content:center;align-items:center;gap:12px;padding:10px 15px;background:#1a7a9a;width:100%;box-sizing:border-box;position:relative;z-index:1000}.mobile-nav-buttons .btn{padding:8px 16px;font-size:0.88rem;flex:0 0 auto}.main-nav{display:none;position:fixed;top:0;left:0;width:260px;height:100vh;background:#FFFFFF;flex-direction:column;justify-content:flex-start;z-index:1002;box-shadow:2px 0 15px rgba(0,0,0,0.25);transform:translateX(-100%);transition:transform .3s ease;overflow-y:auto}.main-nav.active{display:flex;transform:translateX(0)}.nav-container{width:100%;max-width:none;flex-direction:column;align-items:flex-start;padding:20px 0;flex:1}.nav-link{display:block;width:100%;padding:14px 16px;color:#000000;font-size:1rem;border-bottom:1px solid #f0f0f0;border-left:4px solid transparent}.nav-link:hover{border-left-color:#26A9E0;background:rgba(38,169,224,0.08)}.nav-link.active{border-left-color:#26A9E0;color:#26A9E0}.hamburger-menu{display:block;position:fixed;top:10px;left:12px;width:40px;height:40px;cursor:pointer;background:transparent;border:none;z-index:1003;padding:8px}.hamburger-menu span{display:block;width:24px;height:3px;background:#FFFFFF;margin-bottom:5px;border-radius:2px;transition:all .3s ease;margin-left:auto;margin-right:auto}.hamburger-menu.active span:nth-child(1){transform:translateY(8px) rotate(45deg)}.hamburger-menu.active span:nth-child(2){opacity:0}.hamburger-menu.active span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}.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;transition:opacity .3s ease}.mobile-menu-overlay.active{display:block}.site-footer .footer-container{grid-template-columns:1fr;padding:30px 20px;gap:30px}.site-footer .footer-column{text-align:left}.footer-bottom{padding:15px 20px}.footer-nav a{font-size:0.85rem}.footer-column h3{font-size:1rem}.footer-logo{font-size:1.1rem}.page-content img{max-width:100%!important;height:auto!important;display:block}.page-content{overflow-x:hidden;max-width:100%}body{overflow-x:hidden}}body{padding-top:var(--header-offset, 166px)}@media (max-width:768px){body{padding-top:146px}}
/* 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;
}