/* 全站在线服务组件。 */
:root{--site-surface:#101827;--site-text:#f8fafc;--site-muted:#8d9ab0;--site-accent:#00d4ff;--site-line:rgba(255,255,255,.12)}
html.site-light{--site-surface:#fff;--site-text:#0f172a;--site-muted:#607089;--site-accent:#0891b2;--site-line:rgba(15,23,42,.12)}
body{--contact-bg:var(--site-surface);--contact-text:var(--site-text);--contact-muted:var(--site-muted);--contact-accent:var(--site-accent);--contact-line:var(--site-line)}

body .online{position:fixed;right:22px;bottom:96px;z-index:40;width:68px;display:flex;flex-direction:column;align-items:center;gap:10px;overflow:visible}
body .online-item{position:relative;width:64px;height:64px;flex:0 0 64px;overflow:visible}
body .online-trigger{position:relative;width:64px;height:64px;margin:0;padding:0;border:1px solid var(--contact-line);border-radius:18px;background:var(--contact-bg);color:var(--contact-text);box-shadow:0 14px 36px rgba(0,0,0,.2);backdrop-filter:blur(16px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;font:inherit;line-height:1;cursor:pointer;transition:transform .25s,border-color .25s,background .25s}
body .online-trigger:hover,body .online-trigger[aria-expanded="true"]{transform:translateX(-5px);border-color:var(--contact-accent)}
body .online-trigger i{font-size:21px;color:var(--contact-accent)}
body .online-trigger span{color:var(--contact-muted);font-size:10px;white-space:nowrap}
body .online-popover{position:absolute;right:78px;bottom:0;width:250px;max-width:calc(100vw - 120px);height:auto;min-height:0;max-height:calc(100vh - 32px);box-sizing:border-box;overflow:auto;padding:18px;border:1px solid var(--contact-line);border-radius:14px;background:var(--contact-bg);color:var(--contact-text);box-shadow:0 18px 55px rgba(0,0,0,.3);opacity:0;visibility:hidden;pointer-events:none;transform:translateX(8px);transition:opacity .2s,transform .2s,visibility .2s}
body .online-item.is-open .online-popover{opacity:1;visibility:visible;pointer-events:auto;transform:none}
body .online-popover-title{display:flex;align-items:center;gap:7px;margin:0 0 12px;padding:0 0 10px;border-bottom:1px solid var(--contact-line);color:var(--contact-text);font-size:14px;font-weight:600;line-height:1.2}
body .online-popover-title i{color:var(--contact-accent)}
body .online-close{margin-left:auto;padding:0;border:0;background:transparent;color:var(--contact-muted);font-size:24px;line-height:18px;cursor:pointer}
body .online-close:hover{color:var(--contact-accent)}
body .online-popover-body{display:block;width:100%;height:auto;min-height:0}
body .online-popover-body p{margin:8px 0;color:var(--contact-muted);font-size:12px;line-height:1.6;white-space:normal;overflow-wrap:anywhere;word-break:break-word}
body .online-popover-body p:last-child{margin-bottom:0}
body .online-popover-body a{display:flex;align-items:center;gap:7px;color:var(--contact-text);font-size:12px}
body .online-popover-body a:hover{color:var(--contact-accent);text-decoration:none}
body .online-popover-body a img{width:25px!important;height:25px;object-fit:cover;border-radius:7px;flex:0 0 25px}
body .online-popover-body input{display:block;width:100%;height:36px;padding:0 10px;border:1px solid var(--contact-line);border-radius:7px;background:transparent;color:var(--contact-text);outline:none;box-sizing:border-box}
body .online-popover-body input:focus{border-color:var(--contact-accent)}
body .online-popover-body form p:last-child{margin-top:10px}
body .online-popover-body form button{display:block;width:100%;height:36px;padding:0;border:0;border-radius:7px;background:var(--contact-accent);color:#05101c;font-weight:700;cursor:pointer}
body .online-wechat-popover{width:200px}
body .online-wechat-popover .online-popover-body p{text-align:center}
body .online-wechat-popover .online-popover-body img{display:block;width:100%!important;height:auto;max-height:none;object-fit:contain;border-radius:0}
body .online-trigger.scroll-top{display:none}
body .fixed-bottom{height:64px;background:var(--contact-bg)!important;border-top:1px solid var(--contact-line);backdrop-filter:blur(18px);z-index:40}
body .fixed-bottom .col-4{border-color:var(--contact-line)!important}
body .fixed-bottom a{height:64px;padding:0!important;display:flex!important;align-items:center;justify-content:center;gap:7px;color:var(--contact-text)!important;font-size:11px;letter-spacing:.02em}
body .fixed-bottom a i{color:var(--contact-accent);font-size:15px}

@media(min-width:768px) and (max-width:1100px){body .online-popover{right:74px;width:min(250px,calc(100vw - 100px))}}
@media(max-width:767px){body .online{display:none!important}body .fixed-bottom{display:block!important}body .fixed-bottom .col-4{flex:0 0 33.333333%;max-width:33.333333%}}