:root{--header-offset:122px;--primary:#2F6BFF;--secondary:#6FA3FF;--btn-gradient:linear-gradient(180deg,#4A8BFF 0%,#2F6BFF 100%);--card-bg:#FFFFFF;--page-bg:#F4F7FB;--text-main:#1F2D3D;--text-black:#000000;--border-color:#D6E2FF;--glow:#A5C4FF;}*,*::before,*::after{box-sizing:border-box;}body{margin:0;padding-top:var(--header-offset);font-family:'Segoe UI',Arial,Helvetica,sans-serif;background-color:var(--page-bg);color:var(--text-main);}.site-header{position:fixed;top:0;left:0;right:0;width:100%;z-index:1000;box-shadow:0 4px 16px rgba(31,45,61,0.12);}.header-top{height:68px;min-height:68px;width:100%;display:flex;align-items:center;overflow:hidden;background-color:var(--primary);}.header-container{width:100%;height:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;display:flex;justify-content:space-between;align-items:center;}.logo{display:inline-block;font-size:28px;font-weight:800;letter-spacing:1px;color:#FFFFFF;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;}.mobile-nav-buttons{display:none;min-height:48px;}.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;border:none;cursor:pointer;font-weight:700;border-radius:8px;transition:transform 0.2s ease,box-shadow 0.2s ease,filter 0.2s ease;}.btn:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 6px 16px rgba(47,107,255,0.35);}.btn-login{background-color:var(--card-bg);color:var(--primary);border:2px solid var(--card-bg);padding:10px 20px;font-size:15px;box-shadow:0 2px 8px rgba(31,45,61,0.15);}.btn-register{background:var(--btn-gradient);color:#FFFFFF;padding:10px 20px;font-size:15px;border:2px solid rgba(255,255,255,0.4);box-shadow:0 2px 10px rgba(165,196,255,0.55);}.hamburger-menu{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:44px;height:44px;padding:0;background-color:rgba(255,255,255,0.12);border:1px solid rgba(255,255,255,0.35);border-radius:8px;cursor:pointer;z-index:1001;}.hamburger-menu span{display:block;width:22px;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{height:52px;min-height:52px;width:100%;display:flex;align-items:center;overflow:hidden;background-color:var(--card-bg);border-top:1px solid var(--border-color);}.nav-container{width:100%;height:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;display:flex;flex-direction:row;justify-content:center;align-items:center;gap:22px;}.nav-link{display:inline-block;color:var(--text-main);text-decoration:none;font-size:15px;font-weight:600;padding:6px 2px;border-bottom:3px solid transparent;transition:color 0.2s ease,border-color 0.2s ease;white-space:nowrap;}.nav-link:hover{color:var(--primary);}.nav-link.active{color:var(--primary);border-bottom-color:var(--primary);}.nav-overlay{display:none;}.site-footer{background-color:var(--text-main);color:#E8EEF9;margin-top:40px;}.footer-container{max-width:1200px;margin:0 auto;padding:36px 24px 20px;}.footer-slot-anchor{width:100%;}.footer-slot-anchor-inner{width:100%;}.footer-top-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:16px;}.footer-col{min-width:0;}.footer-about{display:flex;flex-direction:column;gap:12px;}.footer-logo{display:inline-block;font-size:26px;font-weight:800;letter-spacing:1px;color:#FFFFFF;text-decoration:none;line-height:1.1;}.footer-description{margin:0;font-size:14px;line-height:1.7;color:#C9D6EC;word-wrap:break-word;overflow-wrap:break-word;}.footer-heading{margin:0 0 14px;font-size:16px;font-weight:700;color:#FFFFFF;letter-spacing:0.3px;}.footer-nav{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}.footer-nav li{margin:0;padding:0;}.footer-nav a{color:#C9D6EC;text-decoration:none;font-size:14px;line-height:1.5;transition:color 0.2s ease,padding-left 0.2s ease;display:inline-block;}.footer-nav a:hover{color:#FFFFFF;padding-left:4px;}.footer-dynamic-col{display:flex;flex-direction:column;}.footer-mid-section{margin-top:24px;display:flex;flex-direction:column;gap:12px;}.footer-mid-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}.footer-bottom{border-top:1px solid rgba(214,226,255,0.18);margin-top:24px;padding-top:18px;text-align:center;}.footer-copyright{margin:0;font-size:13px;line-height:1.6;color:#A9BBD8;}.page-content img{max-width:100%;height:auto;display:block;}@media (max-width:768px){:root{--header-offset:110px;}body{padding-top:var(--header-offset);overflow-x:hidden;}.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{flex:1 !important;display:flex !important;justify-content:center !important;align-items:center !important;font-size:24px;}.logo img{display:block !important;max-width:100%;height:auto;max-height:56px !important;}.desktop-nav-buttons{display:none !important;}.hamburger-menu{display:flex;flex-shrink:0;}.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;min-height:48px;background-color:var(--secondary);}.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;position:fixed;top:108px;left:0;width:100%;max-width:100%;display:none;flex-direction:column;align-items:stretch;justify-content:flex-start;background-color:var(--card-bg);border-top:1px solid var(--border-color);transform:translateX(-100%);transition:transform 0.3s ease;overflow-y:auto;z-index:1001;box-shadow:0 12px 24px rgba(31,45,61,0.18);}.main-nav.active{display:flex;transform:translateX(0);}.nav-container{width:100%;max-width:none;height:auto;padding:10px 15px;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;}.nav-link{width:100%;padding:12px 8px;font-size:15px;border-bottom:1px solid var(--border-color);border-left:3px solid transparent;}.nav-link.active{border-left-color:var(--primary);border-bottom-color:var(--border-color);}.nav-overlay{display:block;position:fixed;top:108px;left:0;right:0;bottom:0;background-color:rgba(31,45,61,0.55);opacity:0;visibility:hidden;transition:opacity 0.3s ease,visibility 0.3s ease;z-index:999;}.nav-overlay.active{opacity:1;visibility:visible;}.footer-top-grid{grid-template-columns:repeat(2,1fr);gap:20px;}.footer-mid-grid{grid-template-columns:repeat(2,1fr);}.footer-container{padding:28px 16px 16px;}.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;
}