.site-header{position:fixed;top:0;left:0;width:100%;background:#ffffff;box-shadow:0 2px 12px rgba(0,0,0,0.15);z-index:1000;min-height:auto}.header-top{background:#0d2a3d;width:100%}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:12px 20px}.logo{display:inline-block;color:#ffffff;font-size:26px;font-weight:800;text-decoration:none;letter-spacing:0.5px;text-transform:uppercase;margin:0;padding:0;white-space:nowrap}.logo:hover{color:#ffd700}.desktop-nav-buttons{display:flex;gap:10px;align-items:center}.mobile-nav-buttons{display:none}.btn{display:inline-block;padding:9px 22px;font-size:15px;font-weight:700;text-decoration:none;border-radius:6px;text-align:center;transition:all 0.3s ease;border:none;cursor:pointer;min-height:40px;line-height:1.2}.btn-login{background:#EA7C07;color:#ffffff}.btn-login:hover{background:#d36e00;box-shadow:0 4px 12px rgba(234,124,7,0.4)}.btn-register{background:#26A9E0;color:#ffffff}.btn-register:hover{background:#1e97c9;box-shadow:0 4px 12px rgba(38,169,224,0.4)}.main-nav{background:#26A9E0;width:100%;display:flex;min-height:52px}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:6px 20px;width:100%}.nav-menu{list-style:none;margin:0;padding:0;display:flex;flex-direction:row;flex-wrap:wrap;justify-content:center;align-items:center;gap:4px}.nav-item{margin:0;padding:0}.nav-link{display:block;color:#ffffff;font-size:14px;font-weight:600;text-decoration:none;padding:10px 14px;border-radius:4px;transition:background 0.3s ease,color 0.3s ease;white-space:nowrap}.nav-link:hover{background:#ffffff;color:#26A9E0}.nav-link.active{background:#ffffff;color:#26A9E0;font-weight:700}.hamburger-menu{display:none}.mobile-menu-overlay{display:none}.site-footer{background:#0d2a3d;color:#ffffff;padding:40px 0 0;margin-top:auto}.footer-container{max-width:1200px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:repeat(4,1fr);gap:30px;padding-bottom:30px}.footer-column h4{color:#ffd700;font-size:16px;font-weight:700;margin-bottom:15px;text-transform:uppercase;letter-spacing:0.5px}.footer-description{color:#c4d6e0;font-size:14px;line-height:1.6}.footer-nav{list-style:none;padding:0;margin:0}.footer-nav li{margin-bottom:8px}.footer-nav a{color:#c4d6e0;text-decoration:none;font-size:14px;transition:color 0.3s ease}.footer-nav a:hover{color:#26A9E0}.footer-bottom{background:#081e2b;text-align:center;padding:15px 20px}.footer-bottom p{color:#c4d6e0;font-size:13px;margin:0}:root{--header-offset:122px}body{padding-top:var(--header-offset)}.page-content img{max-width:100%;height:auto}.page-content{overflow-x:hidden;max-width:100%;width:100%}body{overflow-x:hidden}@media(max-width:768px){:root{--header-offset:110px}.header-container{width:100%;max-width:none;padding:10px 15px;flex-wrap:wrap;justify-content:center;position:relative}.desktop-nav-buttons{display:none}.logo{font-size:24px;text-align:center;flex:1}.mobile-nav-buttons{display:flex;justify-content:center;align-items:center;gap:8px;width:100%;background:#0d2a3d;padding:8px 15px;min-height:48px;flex-direction:row;flex-wrap:wrap}.mobile-nav-buttons .btn{flex:0 1 auto;min-width:120px;padding:8px 18px;font-size:14px;min-height:38px}.hamburger-menu{display:flex;flex-direction:column;width:30px;height:22px;cursor:pointer;position:absolute;left:15px;top:12px;z-index:1001;justify-content:space-between}.hamburger-menu span{display:block;width:100%;height:3px;background:#ffffff;border-radius:2px;transition:all 0.3s ease}.hamburger-menu.active span:nth-child(1){transform:rotate(45deg) translate(5px,6px)}.hamburger-menu.active span:nth-child(2){opacity:0}.hamburger-menu.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-6px)}.main-nav{display:none;position:fixed;top:0;left:0;width:260px;height:100vh;background:#ffffff;flex-direction:column;transform:translateX(-100%);transition:transform 0.3s ease;box-shadow:2px 0 12px rgba(0,0,0,0.2);z-index:1005;overflow-y:auto}.main-nav.active{display:flex;transform:translateX(0)}.main-nav.active{display:flex}.nav-container{width:100%;max-width:none;padding:20px 0}.nav-menu{flex-direction:column;align-items:flex-start;width:100%;gap:0}.nav-item{width:100%}.nav-link{display:block;width:100%;text-align:left;padding:14px 20px;color:#0d2a3d;font-size:15px;border-bottom:1px solid #e0e0e0}.nav-link:hover{background:#26A9E0;color:#ffffff}.mobile-menu-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.5);z-index:1002;opacity:0;visibility:hidden;transition:opacity 0.3s ease}.mobile-menu-overlay.active{display:block;opacity:1;visibility:visible}.no-scroll{overflow:hidden}.page-content{max-width:100%;overflow-x:hidden}.page-content img{max-width:100%!important;height:auto!important;display:block}.footer-container{grid-template-columns:1fr 1fr;padding:0 15px}}
/* 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;
}