.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:#0A1D3F;box-shadow:0 4px 20px rgba(0,0,0,0.7);min-height:auto}.header-top{background:#08162B;width:100%;border-bottom:1px solid #1B3357}.header-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding-left:25px;padding-right:25px;min-height:68px}.logo{display:inline-block;font-size:32px;font-weight:900;color:#F2C14E;text-decoration:none;letter-spacing:2px;background:linear-gradient(135deg,#F2C14E 0%,#FFE5A3 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;text-shadow:none;line-height:1.2}.logo:hover{color:#F2C14E;text-decoration:none;opacity:0.9}.desktop-nav-buttons{display:flex;align-items:center;gap:12px}.btn{display:inline-block;text-decoration:none;font-weight:700;border-radius:6px;padding:10px 24px;font-size:14px;transition:all 0.3s ease;text-align:center;border:none;cursor:pointer;min-height:40px;text-decoration:none!important;color:#F3F8FF}.btn-register{background:linear-gradient(180deg,#2B73F6 0%,#1144A6 100%);color:#F3F8FF;box-shadow:0 4px 15px rgba(43,115,246,0.4)}.btn-register:hover{background:linear-gradient(180deg,#1144A6 0%,#2B73F6 100%);box-shadow:0 4px 25px rgba(43,115,246,0.6);color:#F3F8FF;text-decoration:none;transform:translateY(-2px)}.btn-login{background:linear-gradient(180deg,#F2C14E 0%,#D9A03A 100%);color:#08162B;box-shadow:0 4px 15px rgba(242,193,78,0.3)}.btn-login:hover{background:linear-gradient(180deg,#D9A03A 0%,#F2C14E 100%);box-shadow:0 4px 25px rgba(242,193,78,0.5);color:#08162B;text-decoration:none;transform:translateY(-2px)}.nav-wrapper{background:#0D2A56;width:100%;border-bottom:1px solid #1B3357}.main-nav{display:flex;flex-direction:row;justify-content:center;width:100%;position:static;background:transparent;padding:0;transform:none;transition:none}.nav-container{max-width:1200px;margin:0 auto;display:flex;flex-direction:row;flex-wrap:wrap;justify-content:center;align-items:center;padding:10px 20px;gap:4px;width:100%}.nav-link{display:inline-block;color:#AFC4E8;text-decoration:none;font-size:14px;font-weight:500;padding:12px 18px;border-radius:4px;transition:all 0.3s ease;position:relative;white-space:nowrap}.nav-link:hover{color:#F3F8FF;background:rgba(43,115,246,0.2);text-decoration:none}.nav-link:after{content:'';position:absolute;bottom:4px;left:50%;transform:translateX(-50%);width:0;height:2px;background:#4FA8FF;border-radius:2px;transition:width 0.3s ease}.nav-link:hover:after{width:60%}.mobile-nav-buttons{display:none}.mobile-menu-overlay{display:none}.hamburger-menu{display:none}.mobile-nav-buttons{position:relative;z-index:1000}.site-footer{background:#08162B;color:#AFC4E8;margin-top:0;border-top:3px solid #1D5FD1}.footer-container{max-width:1200px;margin:0 auto;padding:60px 20px 0 20px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid #1B3357}.footer-brand-col{display:flex;flex-direction:column;gap:15px}.footer-logo{font-size:28px;font-weight:900;color:#F2C14E;text-decoration:none;letter-spacing:1px}.footer-logo:hover{color:#F2C14E;text-decoration:none}.footer-desc{font-size:14px;line-height:1.7;color:#AFC4E8;margin:0;max-width:280px}.footer-col{display:flex;flex-direction:column}.footer-title{color:#F3F8FF;font-size:16px;font-weight:700;margin:0 0 18px 0;padding-bottom:10px;border-bottom:1px solid #1B3357;position:relative}.footer-title:after{content:'';position:absolute;bottom:-1px;left:0;width:40px;height:2px;background:#F2C14E}.footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.footer-links li a{color:#AFC4E8;text-decoration:none;font-size:14px;transition:all 0.3s ease;display:inline-block;line-height:1.6}.footer-links li a:hover{color:#4FA8FF;text-decoration:none;padding-left:4px}.footer-bottom{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px 0;gap:5px}.footer-bottom p{margin:0;font-size:13px;color:#AFC4E8;text-align:center}.footer-bottom p span#copyright-year{color:#F2C14E;font-weight:600}body{padding-top:var(--header-offset,122px);margin:0;background:#0A1D3F}.page-content img{max-width:100%;height:auto}@media (max-width:768px){:root{--header-offset:110px}.site-header{position:fixed}.header-top{position:relative;z-index:1002;background:#08162B}.header-container{width:100%;max-width:none;padding-left:15px;padding-right:15px;min-height:60px;display:flex;justify-content:space-between;align-items:center}.logo{font-size:26px;order:2}.desktop-nav-buttons{display:none}.mobile-nav-buttons{display:flex;justify-content:center;align-items:center;gap:8px;padding:8px 10px 10px;background:#0D2A56;border-bottom:none;flex-wrap:wrap;z-index:1000}.mobile-nav-buttons .btn{flex:1;max-width:200px;min-height:44px;display:flex;align-items:center;justify-content:center;font-size:13px}.btn-download{background:linear-gradient(180deg,#2B73F6 0%,#1144A6 100%);color:#F3F8FF;box-shadow:0 2px 8px rgba(43,115,246,0.4)}.main-nav{display:none;flex-direction:column;position:fixed;top:0;right:0;width:85%;max-width:320px;height:100vh;height:100dvh;background:linear-gradient(180deg,#0D2A56 0%,#08162B 100%);z-index:1004;padding:80px 25px 30px;overflow-y:auto;transition:transform 0.3s ease;transform:translateX(100%);box-shadow:-5px 0 30px rgba(0,0,0,0.8);border-left:3px solid rgba(79,168,255,0.3)}.main-nav.active{display:flex;transform:translateX(0)}.nav-container{width:100%;max-width:none;padding:0;flex-direction:column;align-items:stretch;gap:4px}.nav-link{display:block;padding:14px 12px;font-size:15px;color:#AFC4E8;border-bottom:1px solid rgba(27,51,87,0.6);text-align:left}.nav-link:hover:after{display:none}.hamburger-menu{display:flex;flex-direction:column;justify-content:center;align-items:center;width:44px;height:44px;background:transparent;border:1px solid #244D84;border-radius:8px;cursor:pointer;z-index:1005;padding:0;order:1;position:relative}.hamburger-menu span{display:block;width:20px;height:2px;background:#F3F8FF;margin:3px 0;transition:all 0.3s ease;border-radius:2px}.hamburger-menu.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.hamburger-menu.active span:nth-child(2){opacity:0}.hamburger-menu.active span:nth-child(3){transform:rotate(-45deg) translate(7px,-7px)}.mobile-menu-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100vh;height:100dvh;background:rgba(8,22,43,0.85);z-index:1003;transition:opacity 0.3s ease}.mobile-menu-overlay.active{display:block}.site-footer{background:#08162B}.footer-container{padding:40px 15px 0 15px}.footer-grid{grid-template-columns:1fr 1fr;gap:20px}.footer-brand-col{grid-column:1/-1}.footer-desc{max-width:100%}.footer-title{font-size:15px}.footer-links li a{font-size:13px}.footer-bottom{padding:15px 0;gap:4px}.footer-bottom p{font-size:11px}.page-content{overflow-x:hidden;max-width:100%}.page-content img{max-width:100%!important;height:auto!important;display:block}body{overflow-x:hidden}}@media (max-width:480px){.footer-grid{grid-template-columns:1fr}.mobile-nav-buttons .btn{max-width:none;font-size:12px;padding:8px 10px}.mobile-nav-buttons{gap:6px}}
/* 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;
}