.ls-float-btn{position:fixed;right:22px;bottom:22px;z-index:99998;background:#1f6feb;color:#fff;border:0;border-radius:999px;padding:12px 18px;font-weight:700;box-shadow:0 8px 24px rgba(0,0,0,.18)}
.ls-box{display:none;position:fixed;right:22px;bottom:78px;width:340px;max-width:calc(100vw - 44px);background:#fff;border-radius:16px;box-shadow:0 12px 38px rgba(0,0,0,.22);z-index:99999;overflow:hidden;border:1px solid #e8e8e8;font-family:Arial,sans-serif}
.ls-box.show{display:block}.ls-head{background:#1f6feb;color:#fff;padding:13px 15px;display:flex;align-items:center;justify-content:space-between}.ls-head button{background:transparent;border:0;color:#fff;font-size:22px;cursor:pointer}.ls-body{padding:14px}.ls-body label{display:block;font-size:12px;margin:8px 0 4px;color:#333}.ls-body input,.ls-body select,.ls-body textarea{width:100%;box-sizing:border-box;border:1px solid #d6d6d6;border-radius:8px;padding:9px;font-size:14px;background:#fff}.ls-body input[readonly]{background:#f3f4f6;color:#555}.ls-body textarea{min-height:70px;resize:vertical}.ls-body button#ls-start{width:100%;border:0;background:#1f6feb;color:#fff;border-radius:8px;padding:10px;margin-top:12px;font-weight:700}.ls-note{background:#eef6ff;border:1px solid #cce3ff;border-radius:8px;padding:8px;font-size:12px;color:#174a7c}.ls-messages{height:300px;overflow:auto;background:#f6f8fa;border-radius:10px;padding:10px;margin-bottom:10px}.ls-line{margin:7px 0;display:flex}.ls-line span{padding:8px 10px;border-radius:12px;max-width:82%;display:inline-block}.ls-line.visitor{justify-content:flex-end}.ls-line.visitor span{background:#1f6feb;color:#fff}.ls-line.admin span{background:#fff;border:1px solid #ddd}.ls-line.system{font-size:12px;color:#777;display:block;text-align:center}.ls-send{display:flex;gap:6px}.ls-send input{flex:1}.ls-send button{border:0;background:#1f6feb;color:#fff;border-radius:8px;padding:0 12px}#ls-error{color:#b00020;font-size:12px;margin-top:8px}
.ls-hint{font-size:11px;color:#6b7280;margin-top:6px}.ls-send input:focus,#ls-first-message:focus{outline:2px solid rgba(31,111,235,.18);border-color:#1f6feb}