:root{--primary:#26A9E0;--secondary:#FFFFFF;--login-color:#EA7C07;--bg:#FFFFFF;--text-dark:#000000;--footer-bg:#0B2B3C;--footer-text:#D6ECF7;--header-offset:122px;} *{box-sizing:border-box;} body{margin:0;padding-top:var(--header-offset);font-family:'Segoe UI',Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text-dark);} .site-header{position:fixed;top:0;left:0;right:0;width:100%;z-index:1000;box-shadow:0 4px 16px rgba(0,0,0,.18);} .header-top{width:100%;height:68px;min-height:68px;display:flex;align-items:center;overflow:hidden;background:var(--primary);} .header-container{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;letter-spacing:1px;color:var(--secondary);text-decoration:none;line-height:1;} .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;} .desktop-nav-buttons .btn{display:inline-block;padding:10px 22px;border-radius:6px;font-size:15px;font-weight:700;text-decoration:none;white-space:nowrap;transition:transform .2s ease,box-shadow .2s ease;} .desktop-nav-buttons .btn-login{background:var(--login-color);color:#FFFFFF;box-shadow:0 2px 8px rgba(234,124,7,.4);} .desktop-nav-buttons .btn-register{background:var(--secondary);color:var(--primary);box-shadow:0 2px 8px rgba(0,0,0,.15);} .desktop-nav-buttons .btn:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,0,0,.25);} .mobile-nav-buttons{display:none;min-height:48px;} .main-nav{width:100%;height:52px;min-height:52px;display:flex;align-items:center;overflow:hidden;background:var(--secondary);border-bottom:1px solid rgba(38,169,224,.25);} .nav-container{width:100%;height:100%;max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;gap:4px;padding:0 20px;} .nav-link{display:inline-block;padding:8px 12px;font-size:14px;font-weight:600;color:#0B2B3C;text-decoration:none;border-radius:4px;white-space:nowrap;transition:background .2s ease,color .2s ease;} .nav-link:hover,.nav-link.active{background:var(--primary);color:var(--secondary);} .hamburger-menu{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:42px;height:42px;background:transparent;border:none;cursor:pointer;padding:0;z-index:1001;} .hamburger-menu span{display:block;width:24px;height:3px;background:var(--secondary);border-radius:2px;transition:transform .3s ease,opacity .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);} .site-footer{background:var(--footer-bg);color:var(--footer-text);padding:40px 0 0;} .footer-container{max-width:1200px;margin:0 auto;padding:0 20px;} .footer-top-row{margin-bottom:20px;} .footer-top-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.12);} .footer-col{min-width:0;} .footer-logo{display:inline-block;font-size:26px;font-weight:800;letter-spacing:1px;color:var(--secondary);text-decoration:none;margin-bottom:12px;} .footer-description{font-size:14px;line-height:1.7;color:var(--footer-text);margin:0;word-wrap:break-word;overflow-wrap:break-word;} .footer-title{font-size:16px;font-weight:700;color:var(--secondary);margin:0 0 14px;} .footer-nav{list-style:none;margin:0;padding:0;} .footer-nav li{margin-bottom:10px;} .footer-nav a{color:var(--footer-text);text-decoration:none;font-size:14px;transition:color .2s ease;} .footer-nav a:hover{color:var(--primary);} .footer-mid{padding:20px 0;} .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,.12);padding:18px 0;text-align:center;font-size:13px;color:var(--footer-text);} .footer-bottom p{margin:0;} @media (max-width:768px){:root{--header-offset:110px;} .header-top{height:60px;min-height:60px;} .header-container{width:100%;max-width:none;padding-left:15px;padding-right:15px;} .hamburger-menu{display:flex;} .logo{flex:1 !important;display:flex !important;justify-content:center !important;align-items:center !important;text-align:center;font-size:24px;} .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;width:100%;max-width:100%;box-sizing:border-box;padding-left:15px;padding-right:15px;overflow:hidden;gap:10px;flex-wrap:nowrap;min-height:48px;} .mobile-nav-buttons .btn{flex:1;min-width:0;max-width:calc(50% - 5px);box-sizing:border-box;padding:8px 12px;font-size:13px;border-radius:6px;font-weight:700;text-align:center;text-decoration:none;white-space:normal;word-wrap:break-word;overflow-wrap:break-word;} .mobile-nav-buttons .btn-login{background:var(--login-color);color:#FFFFFF;} .mobile-nav-buttons .btn-register{background:var(--secondary);color:var(--primary);} .main-nav{position:fixed;top:var(--header-offset);left:0;width:100%;height:auto;min-height:0;max-height:calc(100vh - var(--header-offset));display:none;flex-direction:column;justify-content:flex-start;align-items:stretch;overflow-y:auto;background:var(--secondary);box-shadow:0 8px 24px rgba(0,0,0,.2);transform:translateX(-100%);transition:transform .3s ease;z-index:1001;} .main-nav.active{display:block;transform:translateX(0);} .nav-container{flex-direction:column;align-items:stretch;justify-content:flex-start;width:100%;max-width:none;height:auto;padding:10px 15px;} .nav-link{display:block;padding:12px 14px;font-size:15px;border-radius:6px;} .footer-top-grid{grid-template-columns:1fr;gap:20px;} .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;} } .nav-overlay{position:fixed;top:var(--header-offset);left:0;right:0;bottom:0;background:rgba(0,0,0,.5);z-index:1000;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;} .nav-overlay.active{opacity:1;visibility:visible;} body.no-scroll{overflow: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;
}