:root{--primary:#26A9E0;--secondary:#FFFFFF;--login:#EA7C07;--bg:#FFFFFF;--dark:#000000;--header-offset:122px;--footer-bg:#0B2239;--footer-text:#D6E4EF;--footer-heading:#FFFFFF;--footer-link:#BFD7E8;--footer-border:rgba(255,255,255,0.12)}*{box-sizing:border-box}body{margin:0;padding-top:var(--header-offset);font-family:'Segoe UI',Roboto,Arial,sans-serif;background:var(--bg);color:var(--dark)}.site-header{position:fixed;top:0;left:0;right:0;width:100%;z-index:1000;background:#0B2239;box-shadow:0 4px 18px rgba(0,0,0,0.28);border-bottom:1px solid rgba(38,169,224,0.35)}.header-top{box-sizing:border-box;height:68px;min-height:68px;width:100%;display:flex;align-items:center;overflow:hidden;background:#0B2239}.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;gap:16px}.logo{display:block;color:#FFFFFF;font-size:26px;font-weight:800;letter-spacing:1px;text-decoration:none;text-transform:lowercase;line-height:1}.logo:hover{color:#26A9E0}.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{box-sizing:border-box;display:none;min-height:48px}.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;font-weight:700;border-radius:8px;border:none;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease;line-height:1.2;text-align:center}.desktop-nav-buttons .btn{padding:10px 22px;font-size:15px}.btn-login{background:var(--login);color:#FFFFFF;box-shadow:0 3px 10px rgba(234,124,7,0.4)}.btn-login:hover{background:#c96a05;transform:translateY(-2px);box-shadow:0 5px 14px rgba(234,124,7,0.55)}.btn-register{background:linear-gradient(135deg,#26A9E0,#0F7FB5);color:#FFFFFF;box-shadow:0 3px 10px rgba(38,169,224,0.45)}.btn-register:hover{background:linear-gradient(135deg,#0F7FB5,#095E88);transform:translateY(-2px);box-shadow:0 5px 14px rgba(38,169,224,0.6)}.hamburger-menu{display:none;position:relative;width:44px;height:44px;background:transparent;border:1px solid rgba(255,255,255,0.35);border-radius:8px;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px}.hamburger-menu span{display:block;width:22px;height:2px;background:#FFFFFF;border-radius:2px;transition:transform .3s ease,opacity .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;width:100%;display:flex;align-items:center;overflow:hidden;background:linear-gradient(180deg,#0E2B47,#0B2239);border-top:1px solid rgba(38,169,224,0.25)}.nav-container{box-sizing:border-box;width:100%;height:100%;max-width:1200px;margin:0 auto;display:flex;flex-direction:row;justify-content:center;align-items:center;padding:0 20px;gap:4px;flex-wrap:nowrap}.nav-link{display:inline-flex;align-items:center;height:100%;padding:0 10px;color:#E6F2FA;text-decoration:none;font-size:14px;font-weight:600;white-space:nowrap;border-bottom:3px solid transparent;transition:color .2s ease,border-color .2s ease,background .2s ease}.nav-link:hover{color:#26A9E0;background:rgba(38,169,224,0.12)}.nav-link.active{color:#26A9E0;border-bottom-color:#26A9E0}.nav-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.55);z-index:999;opacity:0;transition:opacity .3s ease}.nav-overlay.active{display:block;opacity:1}.site-footer{background:var(--footer-bg);color:var(--footer-text);padding:48px 24px 0;margin-top:60px;border-top:4px solid var(--primary)}.footer-top-row{max-width:1200px;margin:0 auto}.footer-top-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding-bottom:32px}.footer-col{min-width:0}.footer-about .footer-logo{display:inline-block;color:#FFFFFF;font-size:24px;font-weight:800;letter-spacing:1px;text-decoration:none;text-transform:lowercase;margin-bottom:14px}.footer-about .footer-logo:hover{color:var(--primary)}.footer-description{font-size:14px;line-height:1.7;color:var(--footer-text);margin:0 0 14px;word-wrap:break-word;overflow-wrap:break-word}.footer-title{color:var(--footer-heading);font-size:16px;font-weight:700;margin:0 0 14px;padding-bottom:10px;border-bottom:2px solid rgba(38,169,224,0.4);text-transform:uppercase;letter-spacing:.5px}.footer-text{font-size:14px;line-height:1.7;color:var(--footer-text);margin:0 0 12px;word-wrap:break-word;overflow-wrap:break-word}.footer-nav{list-style:none;margin:0;padding:0}.footer-nav li{margin:0 0 9px}.footer-nav a{color:var(--footer-link);text-decoration:none;font-size:14px;transition:color .2s ease,padding-left .2s ease;display:inline-block}.footer-nav a:hover{color:var(--primary);padding-left:4px}.footer-mid{max-width:1200px;margin:0 auto;padding:8px 0 16px}.footer-mid-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin:12px 0}.footer-slot-anchor-inner{min-height:0}.footer-bottom{max-width:1200px;margin:0 auto;border-top:1px solid var(--footer-border);padding:18px 0;text-align:center}.footer-bottom p{margin:0;font-size:13px;color:#A8C4D9;line-height:1.6}@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;gap:8px;position:relative}.logo{flex:1 !important;display:flex !important;justify-content:center !important;align-items:center !important;font-size:22px}.logo img{max-height:56px !important;max-width:100%;height:auto}.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:#0B2239;border-bottom:1px solid rgba(38,169,224,0.25)}.mobile-nav-buttons .btn{flex:1;min-width:0;max-width:calc(50% - 5px);box-sizing:border-box;padding:9px 12px;font-size:13px;white-space:normal;word-wrap:break-word;overflow-wrap:break-word}.hamburger-menu{display:flex;flex:0 0 auto;position:relative;z-index:1001}.main-nav{display:none;position:fixed;top:var(--header-offset);left:0;width:280px;max-width:85%;height:auto;max-height:calc(100vh - var(--header-offset));min-height:0;flex-direction:column;align-items:stretch;justify-content:flex-start;background:#0B2239;box-shadow:6px 0 20px rgba(0,0,0,0.4);transform:translateX(-100%);transition:transform .3s ease;overflow-y:auto;z-index:1001;padding:8px 0}.main-nav.active{display:block;transform:translateX(0)}.nav-container{width:100%;max-width:none;height:auto;flex-direction:column;justify-content:flex-start;align-items:stretch;padding:0;gap:0}.nav-link{width:100%;height:auto;padding:14px 20px;font-size:15px;border-bottom:1px solid rgba(255,255,255,0.08);border-left:3px solid transparent}.nav-link.active{border-left-color:var(--primary);border-bottom-color:rgba(255,255,255,0.08)}.nav-overlay{z-index:999}.site-footer{padding:36px 16px 0}.footer-top-grid{grid-template-columns:1fr;gap:26px}.footer-mid-grid{grid-template-columns:1fr 1fr}.footer-bottom p{font-size:12px}}
/* 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;
}