:root{font-family:Inter,system-ui,"Microsoft YaHei",sans-serif;color:#1e2a3d;background:#f4f7fb}*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}.shell{min-height:100vh;display:grid;grid-template-columns:220px 1fr}.rail{background:#172a44;color:#d9e5f2;padding:16px 10px}.brand{font-weight:700;padding:8px 10px 20px}.brand small{display:block;color:#91a6bd;font-size:11px;font-weight:400;margin-top:3px}.nav{display:grid;gap:4px}.nav a{padding:11px;border-radius:8px;color:#adc0d5;text-decoration:none}.nav a:hover,.nav a.active{background:#284666;color:#fff}.main{min-width:0}.top{height:58px;padding:0 22px;background:#fff;border-bottom:1px solid #e4eaf2;display:flex;align-items:center;justify-content:space-between}.content{padding:18px}.panel{background:#fff;border:1px solid #e1e7ef;border-radius:10px;padding:16px}.muted{color:#8b99aa;font-size:12px}.btn{border:1px solid #dbe3ee;background:#fff;border-radius:7px;padding:8px 12px;cursor:pointer}.btn.primary{background:#3279e6;border-color:#3279e6;color:#fff}.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:14px 0}.kpi strong{display:block;font-size:25px;margin-top:8px}.chat-layout{display:grid;grid-template-columns:190px 235px minmax(350px,1fr) 250px;height:calc(100vh - 110px);min-height:580px;background:#fff;border:1px solid #e1e7ef;border-radius:10px;overflow:hidden}.chat-col{border-right:1px solid #e5ebf2;min-width:0;display:flex;flex-direction:column}.chat-col:last-child{border:0}.chat-head{padding:12px 14px;border-bottom:1px solid #e5ebf2}.chat-head small{display:block;color:#8997a9;font-size:11px;margin-top:4px}.search{margin:10px;padding:8px;border:1px solid #e1e7ef;border-radius:6px;color:#9aa7b7;font-size:12px}.list{overflow:auto}.row{padding:11px;border-bottom:1px solid #eff2f6;display:flex;gap:8px;align-items:center}.row.selected{background:#eef5ff}.row small{display:block;color:#8f9dad;font-size:11px}.dot{width:7px;height:7px;border-radius:50%;background:#cbd3df}.dot.online{background:#20b26b}.unread{margin-left:auto;background:#e56670;color:#fff;border-radius:10px;padding:2px 6px;font-size:10px}.thread{flex:1;overflow:auto;background:#f8fafc;padding:18px}.bubble{max-width:75%;padding:9px 11px;border-radius:9px;background:#fff;border:1px solid #e6ebf3;margin:9px 0}.bubble.out{margin-left:auto;background:#dcecff;border-color:#dcecff}.bubble small{display:block;color:#8f9cac;font-size:10px;margin-top:4px}.compose{padding:11px;border-top:1px solid #e5ebf2;display:flex;gap:8px}.compose textarea{resize:none;flex:1;border:1px solid #dfe6ef;border-radius:6px;padding:9px}.quick{padding:13px;overflow:auto}.quick-item{width:100%;display:block;text-align:left;border:1px solid #e1e7ef;background:#fbfcfe;border-radius:7px;padding:10px;margin:8px 0;cursor:pointer}.quick-item small{display:block;color:#8997a9;margin-top:4px}.error{color:#c43d4a;background:#fff0f1;border:1px solid #f0c8cc;border-radius:7px;padding:8px;font-size:12px;margin:8px 0}@media(max-width:1050px){.chat-layout{grid-template-columns:170px 210px minmax(320px,1fr)}.chat-layout>.chat-col:last-child{display:none}}@media(max-width:700px){.shell{grid-template-columns:64px 1fr}.brand span,.nav a span{display:none}.nav a{text-align:center}.kpis{grid-template-columns:repeat(2,1fr)}.chat-layout{grid-template-columns:145px minmax(280px,1fr)}.chat-layout>.chat-col:nth-child(2){display:none}}
/* 会话分组 */
.group-list{padding:8px;border-bottom:1px solid #e5ebf2}.group-row{display:flex;justify-content:space-between;width:100%;border:0;background:transparent;padding:7px 6px;color:#506176;cursor:pointer;text-align:left}.group-row small{color:#91a0b1}