:root{--header-offset:122px;--primary:#26A9E0;--secondary:#FFFFFF;--login-color:#EA7C07;--text-dark:#000000;--text-light:#FFFFFF;--bg-light:#FFFFFF;--footer-bg:#0B2A3A;--footer-text:#D7E7F2;--footer-heading:#FFFFFF;--footer-link:#BFD9EA}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;padding-top:var(--header-offset)}
.site-header{position:fixed;top:0;left:0;right:0;width:100%;z-index:1000;box-shadow:0 4px 14px rgba(0,0,0,0.18);background-color:var(--primary)}
.header-top{box-sizing:border-box;height:68px;min-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}
.logo{display:inline-block;font-size:30px;font-weight:800;color:var(--text-light);text-decoration:none;letter-spacing:0.5px;line-height:1}
.logo:hover{opacity:0.9}
.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{display:none;box-sizing:border-box;min-height:48px}
.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;border:none;cursor:pointer;border-radius:8px;padding:10px 20px;font-size:15px;font-weight:700;line-height:1.2;transition:transform 0.2s ease,box-shadow 0.2s ease,filter 0.2s ease;white-space:nowrap}
.btn:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 6px 16px rgba(0,0,0,0.22)}
.btn-login{background-color:var(--login-color);color:#FFFFFF;box-shadow:0 4px 12px rgba(234,124,7,0.35)}
.btn-register{background-color:#0E7FB8;color:#FFFFFF;box-shadow:0 4px 12px rgba(14,127,184,0.35)}
.main-nav{box-sizing:border-box;height:52px;min-height:52px;display:flex;align-items:center;overflow:hidden;background-color:#0B2A3A;width:100%}
.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;gap:8px;padding:0 20px;flex-wrap:wrap}
.nav-link{display:inline-block;color:#D7E7F2;text-decoration:none;font-size:15px;font-weight:600;padding:6px 12px;border-radius:6px;line-height:1.2;transition:background-color 0.2s ease,color 0.2s ease}
.nav-link:hover{background-color:var(--primary);color:#FFFFFF}
.nav-link.active{background-color:var(--primary);color:#FFFFFF}
.hamburger-menu{display:none;position:absolute;top:50%;left:15px;transform:translateY(-50%);width:44px;height:44px;background:transparent;border:none;cursor:pointer;z-index:1001;padding:0;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.hamburger-menu span{display:block;width:26px;height:3px;background-color:#FFFFFF;border-radius:2px;transition:transform 0.3s ease,opacity 0.3s ease}
.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)}
.nav-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background-color:rgba(0,0,0,0.5);z-index:999;opacity:0;transition:opacity 0.3s ease}
.nav-overlay.active{display:block;opacity:1}
body.no-scroll{overflow:hidden}
.site-footer{background-color:var(--footer-bg);color:var(--footer-text);font-size:14px;line-height:1.6;width:100%}
.footer-container{max-width:1200px;margin:0 auto;padding:40px 20px 20px}
.footer-top-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:start}
.footer-col{min-width:0}
.footer-about{display:flex;flex-direction:column;gap:12px}
.footer-logo{display:inline-block;font-size:26px;font-weight:800;color:#FFFFFF;text-decoration:none;letter-spacing:0.5px;line-height:1}
.footer-description{margin:0;color:var(--footer-text);font-size:14px;line-height:1.7;word-wrap:break-word;overflow-wrap:break-word}
.footer-col-title{margin:0 0 12px 0;font-size:16px;font-weight:700;color:var(--footer-heading)}
.footer-nav{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.footer-nav a{color:var(--footer-link);text-decoration:none;font-size:14px;transition:color 0.2s ease}
.footer-nav a:hover{color:var(--primary);text-decoration:underline}
.footer-dynamic-col{min-height:1px}
.footer-mid-area{margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,0.12)}
.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 rgba(255,255,255,0.12);padding:16px 20px;text-align:center}
.footer-bottom p{margin:0;font-size:13px;color:var(--footer-link)}
.page-content img{max-width:100%;height:auto}
@media (max-width:768px){
  :root{--header-offset:110px}
  .header-top{height:60px !important;min-height:60px !important}
  .header-container{width:100%;max-width:none;padding-left:15px;padding-right:15px;position:relative}
  .logo{position:absolute;left:50%;transform:translateX(-50%);display:flex;justify-content:center;align-items:center;font-size:26px}
  .logo img{max-height:56px !important;max-width:100%;height:auto;display:block}
  .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:6px 15px;overflow:hidden;gap:10px;flex-wrap:nowrap;min-height:48px;background-color:var(--primary)}
  .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}
  .main-nav{display:none;position:fixed;top:0;left:0;width:100%;height:auto;min-height:100vh;background-color:#0B2A3A;z-index:1001;transform:translateX(-100%);transition:transform 0.3s ease;padding-top:24px;overflow-y:auto}
  .main-nav.active{display:block;transform:translateX(0)}
  .nav-container{flex-direction:column;justify-content:flex-start;align-items:stretch;gap:4px;padding:60px 24px 24px;height:auto;max-width:none}
  .nav-link{display:block;padding:12px 16px;font-size:16px;border-radius:8px}
  .footer-container{padding:28px 16px 16px}
  .footer-top-grid{grid-template-columns:1fr}
  .footer-mid-grid{grid-template-columns:1fr 1fr}
  .page-content img{max-width:100% !important;height:auto !important;display:block}
  .page-content{overflow-x:hidden;max-width:100%}
  body{overflow-x:hidden}
}
/* 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;
}