:root{--primary:#26A9E0;--secondary:#FFFFFF;--login:#EA7C07;--bg:#FFFFFF;--text:#000000;--header-offset:122px;--footer-bg:#0B2B3C;--footer-text:#FFFFFF}*{box-sizing:border-box}body{margin:0;padding-top:var(--header-offset);font-family:Arial,Helvetica,sans-serif;color:var(--text);background:var(--bg)}.site-header{position:fixed;top:0;left:0;right:0;width:100%;z-index:1000;background:#FFFFFF;box-shadow:0 2px 12px rgba(0,0,0,0.12);overflow-x:hidden}.header-top{height:68px;min-height:68px;display:flex;align-items:center;overflow:hidden;background:#FFFFFF;border-bottom:1px solid rgba(38,169,224,0.15);width:100%}.header-container{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:28px;font-weight:800;letter-spacing:1px;color:var(--primary);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}.btn{display:inline-block;text-decoration:none;border-radius:8px;padding:10px 22px;font-size:15px;font-weight:700;text-align:center;line-height:1.2;border:none;cursor:pointer;transition:transform 0.2s ease,box-shadow 0.2s ease}.btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,0,0,0.18)}.btn-login{background:var(--login);color:#FFFFFF}.btn-register{background:var(--primary);color:#FFFFFF}.mobile-nav-buttons{display:none;min-height:48px}.hamburger-menu{display:none;flex-direction:column;justify-content:center;gap:5px;width:32px;height:32px;cursor:pointer}.hamburger-menu span{display:block;width:100%;height:3px;border-radius:2px;background:var(--primary);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)}.main-nav{height:52px;min-height:52px;display:flex;align-items:center;overflow:hidden;background:var(--primary);width:100%}.nav-container{height:100%;max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 20px;gap:4px}.nav-link{display:inline-block;color:#FFFFFF;text-decoration:none;font-size:14px;font-weight:600;padding:8px 12px;border-radius:6px;white-space:nowrap;transition:background 0.2s ease}.nav-link:hover,.nav-link.active{background:rgba(255,255,255,0.2)}.nav-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.45);z-index:999}.nav-overlay.active{display:block}.site-footer{background:var(--footer-bg);color:var(--footer-text)}.footer-container{max-width:1200px;margin:0 auto;padding:0 20px}.footer-top-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:40px 0 20px}.footer-about{display:flex;flex-direction:column;gap:12px}.footer-logo{display:inline-block;font-size:26px;font-weight:800;color:var(--primary);text-decoration:none;line-height:1}.footer-description{font-size:14px;line-height:1.6;color:rgba(255,255,255,0.82);word-wrap:break-word;overflow-wrap:break-word;margin:0}.footer-heading{font-size:16px;font-weight:700;color:#FFFFFF;margin:0 0 12px}.footer-nav{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.footer-nav a{color:rgba(255,255,255,0.82);text-decoration:none;font-size:14px;transition:color 0.2s ease}.footer-nav a:hover{color:var(--primary)}.footer-mid{padding-bottom:20px}.footer-mid-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.footer-slot-anchor-inner{display:block;min-height:0}.footer-bottom{border-top:1px solid rgba(255,255,255,0.15);padding:18px 20px;text-align:center}.footer-bottom p{margin:0;font-size:13px;color:rgba(255,255,255,0.7)}@media (max-width:768px){:root{--header-offset:110px}body{padding-top:var(--header-offset)}.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!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:24px}.logo img{display:block!important;max-width:100%;height:auto;max-height:56px!important}.hamburger-menu{display:flex;position:relative;z-index:1001;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:6px 15px;overflow:hidden;gap:10px;flex-wrap:nowrap;background:#FFFFFF;border-bottom:1px solid rgba(38,169,224,0.15)}.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:0;left:0;width:280px;max-width:85%;height:100vh!important;min-height:100vh!important;background:var(--primary);z-index:1001;transform:translateX(-100%);transition:transform 0.3s ease;padding-top:80px;box-shadow:4px 0 20px rgba(0,0,0,0.3)}.main-nav.active{display:block;transform:translateX(0)}.nav-container{width:100%;max-width:none;padding:10px 15px;flex-direction:column;justify-content:flex-start;align-items:stretch;height:auto;gap:6px}.nav-link{padding:12px 14px;font-size:15px;display:block}.nav-overlay{display:none}.nav-overlay.active{display:block}.footer-top-grid{grid-template-columns:1fr;gap:20px;padding:30px 0 16px}.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;
}