:root{--primary:#2F6BFF;--secondary:#6FA3FF;--bg:#F4F7FB;--card-bg:#FFFFFF;--text-main:#1F2D3D;--text-black:#000000;--border:#D6E2FF;--glow:#A5C4FF;--btn-gradient:linear-gradient(180deg,#4A8BFF 0%,#2F6BFF 100%);--header-offset:122px;}*{box-sizing:border-box;}body{margin:0;padding-top:var(--header-offset);background-color:var(--bg);color:var(--text-main);font-family:Arial,Helvetica,sans-serif;}a{text-decoration:none;color:inherit;}ul{list-style:none;margin:0;padding:0;}.site-header{position:fixed;top:0;left:0;right:0;width:100%;z-index:1000;box-shadow:0 4px 16px rgba(47,107,255,0.18);background-color:#FFFFFF;}.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:20px;padding-right:20px;position:relative;}.logo{display:inline-block;font-size:24px;font-weight:800;color:#FFFFFF;letter-spacing:0.5px;line-height:1;white-space:nowrap;}.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;border:none;cursor:pointer;border-radius:8px;font-weight:700;font-size:14px;line-height:1.2;transition:transform 0.2s ease,box-shadow 0.2s ease;box-sizing:border-box;}.btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(47,107,255,0.35);}.btn-login{background-color:transparent;border:2px solid #FFFFFF;color:#FFFFFF;padding:8px 18px;}.btn-register{background:var(--btn-gradient);color:#FFFFFF;padding:10px 20px;box-shadow:0 2px 8px rgba(47,107,255,0.4);}.mobile-nav-buttons{box-sizing:border-box;display:none;min-height:48px;}.hamburger-menu{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:40px;height:40px;background:transparent;border:none;cursor:pointer;padding:0;z-index:1001;}.hamburger-menu span{display:block;width:24px;height:2.5px;background-color:#FFFFFF;border-radius:2px;transition:transform 0.3s ease,opacity 0.3s ease;}.hamburger-menu.active span:nth-child(1){transform:translateY(7.5px) rotate(45deg);}.hamburger-menu.active span:nth-child(2){opacity:0;}.hamburger-menu.active span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg);}.main-nav{box-sizing:border-box;min-height:52px;height:52px;display:flex;align-items:center;overflow:hidden;background-color:#E8F0FF;width:100%;border-top:1px solid var(--border);}.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;width:100%;}.nav-list{display:flex;flex-direction:row;justify-content:center;align-items:center;gap:4px;flex-wrap:nowrap;margin:0;padding:0;}.nav-link{display:inline-block;padding:6px 10px;font-size:14px;font-weight:600;color:var(--text-main);border-radius:6px;transition:background-color 0.2s ease,color 0.2s ease;white-space:nowrap;}.nav-link:hover{background-color:var(--primary);color:#FFFFFF;}.menu-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,0.5);z-index:999;opacity:0;visibility:hidden;transition:opacity 0.3s ease,visibility 0.3s ease;}.menu-overlay.active{opacity:1;visibility:visible;}.site-footer{background-color:#0B1B3A;color:#D6E2FF;padding:0;margin-top:40px;}.footer-container{box-sizing:border-box;width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}.footer-top{padding:40px 0 24px;border-bottom:1px solid rgba(214,226,255,0.15);}.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:22px;font-weight:800;color:#FFFFFF;margin-bottom:12px;}.footer-description{font-size:14px;line-height:1.7;color:#C8D8F5;margin:0 0 12px;word-wrap:break-word;overflow-wrap:break-word;}.footer-title{font-size:16px;font-weight:700;color:#FFFFFF;margin:0 0 14px;}.footer-nav li{margin-bottom:10px;}.footer-nav a{font-size:14px;color:#C8D8F5;transition:color 0.2s ease;display:inline-block;word-wrap:break-word;overflow-wrap:break-word;}.footer-nav a:hover{color:var(--secondary);}.footer-slot-anchor-inner{min-height:1px;}.footer-mid{padding:24px 0;border-bottom:1px solid rgba(214,226,255,0.15);}.footer-mid .footer-container{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;}.footer-bottom{padding:18px 0;text-align:center;}.footer-bottom p{margin:0;font-size:13px;color:#A5B8DD;}@media (max-width:768px){:root{--header-offset:110px;}body{overflow-x:hidden;}.header-top{min-height:60px !important;height:60px !important;}.header-container{width:100%;max-width:none;padding-left:15px;padding-right:15px;justify-content:space-between;}.logo{flex:1 !important;display:flex !important;justify-content:center !important;align-items:center !important;}.logo img{display:block !important;max-width:100%;height:auto;max-height:56px !important;}.hamburger-menu{display:flex !important;order:-1;}.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;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{display:none;position:fixed;top:0;left:0;width:80%;max-width:320px;height:100vh;min-height:100vh;background-color:#FFFFFF;z-index:1001;flex-direction:column;align-items:stretch;overflow-y:auto;transform:translateX(-100%);transition:transform 0.3s ease;padding-top:80px;box-shadow:2px 0 16px rgba(0,0,0,0.2);}.main-nav.active{display:block;transform:translateX(0);}.nav-container{width:100%;max-width:none;height:auto;padding:0;display:block;margin:0;}.nav-list{flex-direction:column;align-items:stretch;gap:0;width:100%;}.nav-list li{border-bottom:1px solid var(--border);}.nav-link{display:block;padding:14px 20px;font-size:15px;border-radius:0;white-space:normal;}.mobile-nav-buttons .btn-login{border-color:#FFFFFF;}.page-content img{max-width:100% !important;height:auto !important;display:block;}.page-content{overflow-x:hidden;max-width:100%;}.footer-container{padding-left:15px;padding-right:15px;}.footer-top-grid{grid-template-columns:1fr;gap:24px;}.footer-mid .footer-container{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;
}