:root{--header-offset:122px;--primary:#113B7A;--secondary:#1D5FD1;--btn-grad:linear-gradient(180deg,#2B73F6 0%,#1144A6 100%);--card-bg:#10233F;--text-main:#F3F8FF;--text-sec:#AFC4E8;--border-c:#244D84;--glow:#4FA8FF;--gold:#F2C14E;--divider:#1B3357;--deep-navy:#08162B}*{box-sizing:border-box}html,body{margin:0;padding:0}body{padding-top:var(--header-offset);font-family:'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;background-color:var(--deep-navy);color:var(--text-main)}.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;box-shadow:0 4px 18px rgba(8,22,43,.55);background-color:var(--primary)}.header-top{box-sizing:border-box;min-height:68px;height:68px;display:flex;align-items:center;overflow:hidden;background-color:var(--primary);width:100%}.header-container{box-sizing:border-box;width:100%;height:100%;max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding-left:24px;padding-right:24px;position:relative}.logo{display:inline-block;color:var(--gold);font-size:30px;font-weight:800;letter-spacing:1px;text-decoration:none;line-height:1;text-shadow:0 0 12px rgba(79,168,255,.35)}.logo img{display:block;max-height:60px;height:auto;width:auto;max-width:280px;object-fit:contain}.desktop-nav-buttons{display:flex;gap:12px;align-items:center}.mobile-nav-buttons{box-sizing:border-box;display:none;min-height:48px;width:100%;max-width:100%;overflow:hidden;background-color:var(--primary)}.btn{display:inline-block;text-decoration:none;border-radius:8px;font-weight:700;cursor:pointer;text-align:center;border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,filter .2s ease}.btn-login{background-color:var(--card-bg);color:var(--text-main);border:1px solid var(--border-c);padding:9px 18px;font-size:14px}.btn-login:hover{box-shadow:0 0 12px rgba(79,168,255,.45);border-color:var(--glow);transform:translateY(-1px)}.btn-register{background:var(--btn-grad);color:#FFFFFF;border:1px solid var(--glow);padding:9px 20px;font-size:14px;box-shadow:0 4px 12px rgba(43,115,246,.35)}.btn-register:hover{filter:brightness(1.08);box-shadow:0 0 16px rgba(79,168,255,.6);transform:translateY(-1px)}.hamburger-menu{display:none;background:transparent;border:none;cursor:pointer;padding:8px;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:5px;z-index:1001}.hamburger-menu span{display:block;width:24px;height:2px;background-color:var(--gold);border-radius:2px;transition:transform .3s ease,opacity .3s ease}.hamburger-menu.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}.hamburger-menu.active span:nth-child(2){opacity:0}.hamburger-menu.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.main-nav{box-sizing:border-box;min-height:52px;height:52px;display:flex;align-items:center;overflow:hidden;background-color:var(--deep-navy);width:100%;border-top:1px solid var(--divider)}.nav-container{box-sizing:border-box;height:100%;max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 20px;gap:4px}.nav-link{display:inline-block;color:var(--text-sec);text-decoration:none;font-size:14px;font-weight:600;padding:8px 10px;border-radius:6px;white-space:nowrap;transition:color .2s ease,background-color .2s ease}.nav-link:hover,.nav-link.active{color:var(--gold);background-color:rgba(79,168,255,.12)}.nav-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(8,22,43,.7);z-index:999;opacity:0;transition:opacity .3s ease}.nav-overlay.active{display:block;opacity:1}.site-footer{background-color:var(--deep-navy);color:var(--text-sec);border-top:1px solid var(--divider);padding:44px 0 0;font-size:14px}.footer-container{max-width:1200px;margin:0 auto;padding:0 24px;box-sizing:border-box}.footer-top-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:32px}.footer-col{min-width:0}.footer-about{grid-column:span 1}.footer-logo{display:inline-block;color:var(--gold);font-size:28px;font-weight:800;letter-spacing:1px;text-decoration:none;margin-bottom:14px;line-height:1}.footer-description{color:var(--text-sec);line-height:1.7;margin:0 0 12px;word-wrap:break-word;overflow-wrap:break-word}.footer-heading{color:var(--text-main);font-size:16px;font-weight:700;margin:0 0 14px;letter-spacing:.3px}.footer-nav{list-style:none;margin:0;padding:0}.footer-nav li{margin-bottom:10px}.footer-nav a{color:var(--text-sec);text-decoration:none;font-size:14px;transition:color .2s ease}.footer-nav a:hover{color:var(--gold)}.footer-mid{margin-bottom:24px}.footer-mid-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.footer-slot-anchor-inner{min-height:1px}.footer-bottom{border-top:1px solid var(--divider);padding:20px 0;text-align:center;color:var(--text-sec);font-size:13px}.footer-bottom p{margin:0}.footer-dynamic-col{min-width:0}@media (max-width:768px){:root{--header-offset:110px}.header-top{min-height:60px!important;height:60px!important}.header-container{width:100%;max-width:none;padding-left:15px;padding-right:15px;justify-content:flex-start}.logo{flex:1!important;display:flex!important;justify-content:center!important;align-items:center!important;text-align:center}.logo img{display:block!important;max-width:100%;height:auto;max-height:56px}.desktop-nav-buttons{display:none!important}.mobile-nav-buttons{display:flex!important;align-items:center;justify-content:center;width:100%;max-width:100%;box-sizing:border-box;padding-left:15px;padding-right:15px;overflow:hidden;gap:10px;flex-wrap:nowrap}.mobile-nav-buttons .btn{flex:1;min-width:0;max-width:calc(50% - 5px);box-sizing:border-box;padding:8px 12px;font-size:13px;white-space:normal;word-wrap:break-word;overflow-wrap:break-word}.hamburger-menu{display:flex;position:relative;z-index:1001}.main-nav{display:none;position:fixed;top:0;left:0;width:82%;max-width:320px;height:100%;min-height:100%;flex-direction:column;justify-content:flex-start;align-items:stretch;padding:80px 0 20px;background-color:var(--card-bg);border-right:1px solid var(--border-c);transform:translateX(-100%);transition:transform .3s ease;z-index:1000;overflow-y:auto;border-top:none}.main-nav.active{display:block;transform:translateX(0)}.nav-container{width:100%;max-width:none;height:auto;flex-direction:column;justify-content:flex-start;align-items:stretch;padding:0 16px;gap:2px}.nav-link{display:block;width:100%;font-size:15px;padding:12px 10px;border-bottom:1px solid var(--divider)}.footer-top-grid{grid-template-columns:1fr 1fr;gap:20px}.footer-mid-grid{grid-template-columns:1fr 1fr}.footer-container{padding:0 16px}.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 (max-width:480px){.footer-top-grid{grid-template-columns:1fr}.footer-mid-grid{grid-template-columns:1fr}}
/* 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;
}