:root{--primary:#2F6BFF;--secondary:#6FA3FF;--btn-grad:linear-gradient(180deg,#4A8BFF 0%,#2F6BFF 100%);--card-bg:#FFFFFF;--bg:#F4F7FB;--text-main:#1F2D3D;--border:#D6E2FF;--glow:#A5C4FF;--header-offset:122px;}*{box-sizing:border-box;}body{margin:0;padding-top:var(--header-offset);font-family:'Segoe UI',Arial,Helvetica,sans-serif;color:var(--text-main);background:var(--bg);}a{text-decoration:none;}.site-header{position:fixed;top:0;left:0;right:0;width:100%;z-index:1000;box-shadow:0 4px 18px rgba(47,107,255,0.18);}.header-top{box-sizing:border-box;height:68px;min-height:68px;display:flex;align-items:center;overflow:hidden;background: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:26px;font-weight:800;letter-spacing:0.5px;color:#FFFFFF;text-decoration:none;line-height:1;}.logo:hover{color:var(--glow);}.desktop-nav-buttons{display:flex;gap:12px;align-items:center;}.mobile-nav-buttons{box-sizing:border-box;display:none;min-height:48px;}.btn{display:inline-block;text-decoration:none;border:none;cursor:pointer;border-radius:8px;padding:10px 20px;font-size:14px;font-weight:700;line-height:1.2;text-align:center;transition:transform 0.2s ease,box-shadow 0.2s ease;}.btn-register{background:var(--btn-grad);color:#FFFFFF;box-shadow:0 4px 12px rgba(47,107,255,0.35);}.btn-register:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(47,107,255,0.45);}.btn-login{background:#FFFFFF;color:var(--primary);border:1px solid var(--border);box-shadow:0 3px 10px rgba(31,45,61,0.10);}.btn-login:hover{transform:translateY(-1px);box-shadow:0 5px 14px rgba(31,45,61,0.18);}.hamburger-menu{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:40px;height:40px;padding:0;background:transparent;border:none;cursor:pointer;z-index:1001;}.hamburger-menu span{display:block;width:24px;height:2px;background:#FFFFFF;border-radius:2px;transition:transform 0.3s ease,opacity 0.3s 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;height:52px;min-height:52px;display:flex;align-items:center;overflow:hidden;background:#FFFFFF;border-bottom:2px solid var(--border);width:100%;}.nav-container{box-sizing:border-box;height:100%;max-width:1200px;width:100%;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 20px;}.nav-menu{list-style:none;margin:0;padding:0;display:flex;flex-direction:row;justify-content:center;align-items:center;flex-wrap:wrap;gap:2px;}.nav-link{display:block;padding:8px 11px;color:var(--text-main);font-size:14px;font-weight:600;border-radius:6px;transition:color 0.2s ease,background-color 0.2s ease;}.nav-link:hover,.nav-link.active{color:var(--primary);background:var(--bg);}.nav-overlay{position:fixed;inset:0;background:rgba(31,45,61,0.55);z-index:999;opacity:0;visibility:hidden;transition:opacity 0.3s ease,visibility 0.3s ease;}.nav-overlay.active{opacity:1;visibility:visible;}body.no-scroll{overflow:hidden;}.site-footer{background:#0E1E3C;color:#DCE6F8;padding:0;margin:0;}.footer-container{max-width:1200px;margin:0 auto;padding:0 24px;box-sizing:border-box;}.footer-top{padding:40px 0 20px;}.footer-top-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:start;}.footer-col{min-width:0;overflow-wrap:break-word;}.footer-logo{display:inline-block;font-size:24px;font-weight:800;color:#FFFFFF;margin-bottom:12px;letter-spacing:0.5px;}.footer-logo:hover{color:var(--glow);}.footer-description{font-size:14px;line-height:1.7;color:#B9C9E6;margin:0 0 12px;word-wrap:break-word;overflow-wrap:break-word;}.footer-heading{font-size:16px;font-weight:700;color:#FFFFFF;margin:0 0 14px;padding-bottom:8px;border-bottom:2px solid var(--primary);display:inline-block;}.footer-nav{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;}.footer-nav li{margin:0;padding:0;}.footer-nav a{color:#B9C9E6;font-size:14px;line-height:1.4;transition:color 0.2s ease;}.footer-nav a:hover{color:var(--glow);}.footer-slot-anchor-inner{min-height:1px;}.footer-mid{padding:10px 0 20px;}.footer-mid-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:12px;}.footer-bottom{background:#0A1730;border-top:1px solid #1E3560;padding:18px 0;}.copyright{font-size:13px;color:#9FB4D8;margin:0;text-align:center;line-height:1.5;}@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:12px;padding-right:12px;position:relative;height:100%;}.hamburger-menu{display:flex;position:relative;z-index:2;}.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% - 100px);font-size:22px;}.desktop-nav-buttons{display:none !important;}.mobile-nav-buttons{display:flex !important;align-items:center;justify-content:center;min-height:48px;width:100%;max-width:100%;box-sizing:border-box;padding-left:12px;padding-right:12px;overflow:hidden;gap:10px;flex-wrap:nowrap;background:var(--primary);border-top:1px solid rgba(255,255,255,0.15);}.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{height:48px !important;min-height:48px !important;display:none;position:fixed;top:var(--header-offset);left:0;width:100%;max-width:100%;flex-direction:column;background:#FFFFFF;border-bottom:none;transform:translateX(-100%);transition:transform 0.3s ease;overflow-y:auto;max-height:calc(100vh - var(--header-offset));box-shadow:0 8px 24px rgba(31,45,61,0.20);}.main-nav.active{display:block;transform:translateX(0);}.nav-container{width:100%;max-width:none;height:auto;padding:10px 16px 20px;flex-direction:column;justify-content:flex-start;align-items:stretch;}.nav-menu{flex-direction:column;width:100%;gap:2px;}.nav-menu li{width:100%;}.nav-link{width:100%;padding:12px 14px;font-size:15px;border-radius:8px;}.footer-container{padding-left:16px;padding-right:16px;}.footer-top-grid{grid-template-columns:1fr;gap:24px;}.footer-mid-grid{grid-template-columns:1fr 1fr;gap:16px;}.footer-dynamic-col{display:block;}.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;
}