#sc-btn{position:fixed;bottom:24px;right:24px;z-index:9998;width:56px;height:56px;border-radius:50%;background:#1a472a;color:#fff;border:none;cursor:pointer;box-shadow:0 4px 16px rgba(0,0,0,0.3);display:flex;align-items:center;justify-content:center;font-size:24px;transition:transform .2s,background .2s;touch-action:manipulation;-webkit-tap-highlight-color:transparent}
#sc-btn:hover{transform:scale(1.1);background:#2d5a3d}
#sc-btn .badge{position:absolute;top:-2px;right:-2px;background:#f44336;color:#fff;border-radius:50%;width:20px;height:20px;font-size:11px;font-weight:700;display:none;align-items:center;justify-content:center;line-height:20px;text-align:center}
#sc-panel{position:fixed;bottom:90px;right:24px;z-index:9999;width:370px;max-width:calc(100vw - 32px);height:480px;max-height:calc(100vh - 120px);background:#fff;border-radius:16px;box-shadow:0 8px 40px rgba(0,0,0,0.25);display:none;flex-direction:column;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}
#sc-panel.open{display:flex}
#sc-header{background:#1a472a;color:#fff;padding:14px 16px;display:flex;align-items:center;gap:10px;flex-shrink:0}
#sc-header .title{flex:1;font-weight:600;font-size:15px}
#sc-header .status{font-size:11px;opacity:0.8}
#sc-header .close{background:none;border:none;color:#fff;font-size:20px;cursor:pointer;padding:4px 8px;touch-action:manipulation}
#sc-msgs{flex:1;overflow-y:auto;padding:12px 14px;display:flex;flex-direction:column;gap:8px;background:#f8f9fa}
.sc-msg{max-width:82%;padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.5;word-break:break-word;animation:sc-fadein .2s}
.sc-msg.visitor{align-self:flex-end;background:#1a472a;color:#fff;border-bottom-right-radius:4px}
.sc-msg.operator{align-self:flex-start;background:#fff;color:#333;border:1px solid #e0e0e0;border-bottom-left-radius:4px}
.sc-msg .time{font-size:10px;opacity:0.6;margin-top:4px;display:block}
.sc-typing{align-self:flex-start;color:#999;font-size:13px;font-style:italic;padding:4px 0;display:none}
#sc-intro{padding:16px;text-align:center;flex-shrink:0}
#sc-intro h3{font-size:16px;color:#1a472a;margin:0 0 8px}
#sc-intro p{font-size:13px;color:#666;margin:0 0 12px}
#sc-intro input{width:100%;padding:10px 12px;border:1px solid #ddd;border-radius:8px;font-size:14px;box-sizing:border-box;margin-bottom:8px;outline:none}
#sc-intro input:focus{border-color:#1a472a}
#sc-intro button{width:100%;padding:12px;background:#1a472a;color:#fff;border:none;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;touch-action:manipulation}
#sc-intro button:hover{background:#2d5a3d}
#sc-input-bar{display:none;padding:10px 12px;border-top:1px solid #eee;background:#fff;flex-shrink:0}
#sc-input-bar form{display:flex;gap:8px}
#sc-input-bar input{flex:1;padding:10px 14px;border:1px solid #ddd;border-radius:20px;font-size:14px;outline:none}
#sc-input-bar input:focus{border-color:#1a472a}
#sc-input-bar button{width:40px;height:40px;border-radius:50%;background:#1a472a;color:#fff;border:none;cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;flex-shrink:0;touch-action:manipulation}
@keyframes sc-fadein{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:420px){#sc-panel{right:0;bottom:0;width:100%;max-width:100%;height:100vh;max-height:100vh;border-radius:0}#sc-btn{bottom:16px;right:16px}}