.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:#08162B;box-shadow:0 4px 20px rgba(0,0,0,.5)}.header-top{background:linear-gradient(180deg,#10233F 0%,#0B1B33 100%);width:100%;border-bottom:1px solid #244D84}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding-left:20px;padding-right:20px;min-height:68px}.logo{color:#F3F8FF;font-size:28px;font-weight:800;text-decoration:none;letter-spacing:2px;display:flex;align-items:center;gap:8px}.logo::before{content:"";display:inline-block;width:8px;height:36px;background:linear-gradient(180deg,#F2C14E,#ff8c00);border-radius:4px;box-shadow:0 0 12px rgba(242,193,78,.5)}.desktop-nav-buttons{display:flex;align-items:center;gap:12px}.btn{display:inline-block;text-decoration:none;font-weight:600;font-size:14px;border-radius:8px;padding:10px 24px;border:1px solid #244D84;transition:transform .2s,box-shadow .2s;min-width:110px;text-align:center}.btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(79,168,255,.4)}.btn-register{background:linear-gradient(180deg,#2B73F6 0%,#1144A6 100%);color:#fff;border:none}.btn-login{background:transparent;color:#F3F8FF;border:1px solid #4FA8FF}.btn-login:hover{background:rgba(79,168,255,.2)}.main-nav{background:linear-gradient(90deg,#0D1F3F 0%,#10233F 50%,#0D1F3F 100%);width:100%;display:flex;align-items:center;border-bottom:1px solid #244D84}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;gap:4px;padding-left:20px;padding-right:20px;width:100%}.nav-link{color:#AFC4E8;font-size:15px;font-weight:500;text-decoration:none;padding:16px 16px;border-bottom:3px solid transparent;transition:color .3s,border-color .3s;white-space:nowrap}.nav-link:hover,.nav-link.active{color:#F3F8FF;border-bottom-color:#F2C14E}.mobile-nav-buttons{display:none}.hamburger-menu{display:none}.mobile-menu-overlay{display:none}body{padding-top:120px}.page-content img{max-width:100%!important;height:auto!important;display:block}.page-content{overflow-x:hidden;max-width:100%}.site-footer{background:#08162B;color:#AFC4E8;padding-top:60px;padding-bottom:30px;border-top:1px solid #244D84;margin-top:60px}.footer-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:40px;padding-left:20px;padding-right:20px}.footer-logo{color:#F3F8FF;font-size:26px;font-weight:800;text-decoration:none;letter-spacing:2px}.footer-description{font-size:14px;line-height:1.6;margin-top:12px;color:#AFC4E8;max-width:300px}.footer-copyright{font-size:13px;color:#5B7AAB;margin-top:20px}.footer-nav h3.footer-title{color:#F3F8FF;font-size:16px;font-weight:700;margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid #1B3357;letter-spacing:1px;text-transform:uppercase}.footer-list{display:flex;flex-direction:column;gap:12px}.footer-list a{color:#AFC4E8;text-decoration:none;font-size:14px;transition:color .3s;display:flex;align-items:center;gap:6px}.footer-list a::before{content:"›";color:#F2C14E;font-size:18px;line-height:1}.footer-list a:hover{color:#F3F8FF;padding-left:4px}@media(max-width:768px){.header-container{max-width:none;width:100%;min-height:60px;padding-left:15px;padding-right:15px}.logo{font-size:20px;margin:0 auto}.logo::before{height:25px;width:6px}.desktop-nav-buttons{display:none}.main-nav{display:none;flex-direction:column;position:fixed;top:0;left:0;height:100vh;width:80%;max-width:340px;background:linear-gradient(180deg,#08162B 0%,#10233F 100%);z-index:1002;justify-content:flex-start;align-items:stretch;padding-top:40px;transform:translateX(-100%);transition:transform .3s ease;box-shadow:4px 0 30px rgba(0,0,0,.6);border-right:1px solid #244D84}.main-nav.active{display:flex;transform:translateX(0)}.nav-container{flex-direction:column;justify-content:flex-start;align-items:stretch;padding-left:0;padding-right:0;width:100%;gap:0}.nav-link{display:block;padding:16px 24px;border-bottom:1px solid #1B3357;font-size:16px;font-weight:500;color:#F3F8FF;border-left:3px solid transparent;width:100%;text-align:left;transition:background .3s}.nav-link:hover,.nav-link.active{background:#0D1F3F;border-left-color:#F2C14E;border-bottom-color:#1B3357}.mobile-nav-buttons{display:flex;position:fixed;top:60px;left:0;right:0;z-index:1000;background:#0A1930;padding:10px 12px;gap:8px;justify-content:center;border-top:1px solid #1B3357;border-bottom:1px solid #1B3357}.btn-mobile-primary{background:linear-gradient(180deg,#2B73F6 0%,#1144A6 100%);color:#fff;padding:10px 12px;font-size:14px;border-radius:6px;border:none;text-align:center;min-width:100px}.btn-mobile-secondary{background:transparent;color:#F3F8FF;padding:10px 12px;font-size:14px;border-radius:6px;border:1px solid #4FA8FF;text-align:center;min-width:100px}.hamburger-menu{display:flex;position:fixed;top:0;left:0;z-index:1003;background:transparent;border:none;cursor:pointer;padding:15px;flex-direction:column;gap:6px;width:52px;height:60px;justify-content:center}.hamburger-menu span{display:block;width:28px;height:3px;background:#F3F8FF;border-radius:3px;transition:transform .3s ease,opacity .3s ease}.hamburger-menu.active span:nth-child(1){transform:rotate(45deg) translateY(9px)}.hamburger-menu.active span:nth-child(2){opacity:0}.hamburger-menu.active span:nth-child(3){transform:rotate(-45deg) translateY(-9px)}.mobile-menu-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(8,22,43,.85);z-index:1001;transition:opacity .3s ease}.mobile-menu-overlay.active{display:block}.site-header{min-height:120px}.footer-container{grid-template-columns:1fr;gap:30px;padding-left:15px;padding-right:15px}body{padding-top:108px;overflow-x:hidden}body.no-scroll{overflow:hidden}body{overflow-x:hidden}.page-content img{max-width:100%!important;height:auto!important;display:block}.page-content{overflow-x:hidden;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;
}