:root{--primary:#26A9E0;--secondary:#FFFFFF;--accent:#EA7C07;--dark:#000000;--header-offset:122px;--footer-bg:#0B3C52;--footer-text:#E8F4FA;--footer-muted:#A9C9D8;}*{box-sizing:border-box;}body{padding-top:var(--header-offset);}img{max-width:100%;}a{text-decoration:none;}
.site-header{position:fixed;top:0;left:0;right:0;width:100%;z-index:1000;background:var(--secondary);box-shadow:0 2px 10px rgba(0,0,0,0.15);}
.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:30px;padding-right:30px;}
.logo{display:inline-block;font-size:28px;font-weight:800;color:var(--secondary);letter-spacing:0.5px;line-height:1;}
.logo:hover{color:var(--secondary);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;}
.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;font-weight:700;border-radius:8px;padding:10px 20px;font-size:15px;line-height:1.2;transition:transform 0.2s ease,box-shadow 0.2s ease;cursor:pointer;border:none;}
.btn:hover{transform:translateY(-1px);}
.btn-login{background-color:var(--accent);color:#FFFFFF;box-shadow:0 3px 8px rgba(234,124,7,0.35);}
.btn-register{background-color:var(--secondary);color:var(--primary);box-shadow:0 3px 8px rgba(0,0,0,0.15);}
.mobile-nav-buttons{box-sizing:border-box;display:none;min-height:48px;}
.main-nav{box-sizing:border-box;height:52px;min-height:52px;display:flex;align-items:center;overflow:hidden;background-color:var(--secondary);width:100%;border-top:1px solid rgba(38,169,224,0.15);}
.nav-container{box-sizing:border-box;height:100%;width:100%;max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 20px;position:relative;}
.nav-list{display:flex;flex-direction:row;list-style:none;margin:0;padding:0;gap:4px;align-items:center;}
.nav-link{display:block;padding:6px 10px;font-size:14px;font-weight:600;color:var(--dark);border-radius:6px;transition:background-color 0.2s ease,color 0.2s ease;white-space:nowrap;}
.nav-link:hover,.nav-link.active{background-color:rgba(38,169,224,0.12);color:var(--primary);}
.hamburger-menu{display:none;flex-direction:column;justify-content:space-between;width:40px;height:32px;padding:6px;background:transparent;border:none;cursor:pointer;z-index:1001;}
.hamburger-menu span{display:block;width:100%;height:3px;background-color:var(--dark);border-radius:2px;transition:transform 0.3s ease,opacity 0.3s ease;}
.hamburger-menu.active span:nth-child(1){transform:translateY(9px) rotate(45deg);}
.hamburger-menu.active span:nth-child(2){opacity:0;}
.hamburger-menu.active span:nth-child(3){transform:translateY(-9px) rotate(-45deg);}
.nav-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background: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:15px;line-height:1.6;}
.footer-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;box-sizing:border-box;}
.footer-top{padding:50px 0 30px;border-bottom:1px solid rgba(255,255,255,0.08);}
.footer-top-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.footer-col{min-width:0;}
.footer-about .footer-logo{display:inline-block;font-size:26px;font-weight:800;color:var(--primary);margin-bottom:12px;letter-spacing:0.5px;}
.footer-about .footer-logo:hover{color:#5FC5EE;}
.footer-description{font-size:14px;color:var(--footer-muted);word-wrap:break-word;overflow-wrap:break-word;margin:0 0 10px;}
.footer-heading{font-size:16px;font-weight:700;color:#FFFFFF;margin:0 0 14px;}
.footer-nav{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;}
.footer-nav a{color:var(--footer-muted);font-size:14px;transition:color 0.2s ease;word-wrap:break-word;}
.footer-nav a:hover{color:var(--primary);}
.footer-mid{padding:30px 0;border-bottom:1px solid rgba(255,255,255,0.08);}
.footer-mid-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.footer-mid-cell{min-width:0;}
.footer-slot-anchor-inner{width:100%;}
.footer-bottom{padding:20px 0;text-align:center;}
.footer-copyright{margin:0;font-size:13px;color:var(--footer-muted);}
.footer-copyright span{color:var(--footer-text);font-weight:600;}
.footer-col .footer-slot-anchor-inner,.footer-mid-cell .footer-slot-anchor-inner{min-height:1px;}
@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;position:relative;}
.logo{position:absolute !important;left:50% !important;transform:translateX(-50%) !important;display:flex !important;align-items:center !important;justify-content:center !important;max-width:calc(100% - 110px);}
.logo img{display:block !important;max-width:100%;height:auto;max-height:56px !important;}
.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:8px 15px;overflow:hidden;gap:10px;flex-wrap:nowrap;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;}
.main-nav{min-height:48px !important;height:48px !important;display:none;position:fixed;top:calc(var(--header-offset) - 48px);left:0;width:100%;background-color:var(--secondary);flex-direction:column;transform:translateX(-100%);transition:transform 0.3s ease;box-shadow:0 4px 12px rgba(0,0,0,0.15);z-index:1000;}
.main-nav.active{display:block;transform:translateX(0);}
.main-nav .nav-container{width:100%;max-width:none;padding:15px;height:auto;min-height:48px;flex-direction:column;justify-content:flex-start;align-items:stretch;}
.nav-list{display:flex;flex-direction:column;width:100%;gap:4px;}
.nav-link{padding:12px 15px;font-size:15px;width:100%;text-align:left;border-radius:6px;}
.hamburger-menu{display:flex;position:relative;z-index:1001;}
.main-nav .hamburger-menu{display:none;}
.nav-overlay{z-index:999;}
.footer-top{padding:40px 0 20px;}
.footer-top-grid{grid-template-columns:1fr;gap:25px;}
.footer-mid-grid{grid-template-columns:1fr 1fr;gap:15px;}
.footer-container{padding:0 15px;}
.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;
}