.full-sign-mask{position:fixed;top:0;left:0;right:0;bottom:0;z-index:9999;background:#FFFFFF;display:flex;flex-direction:column}
.full-sign-topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 15px;background:#F5F5F5;border-bottom:1px solid #E0E0E0;flex-shrink:0}
.full-sign-btn{font-size:15px;color:#2563EB;padding:6px 12px;font-weight:bold;cursor:pointer}
.full-sign-tip{font-size:13px;color:#666666}
.full-sign-body{flex:1;position:relative;overflow:hidden;touch-action:none}
.full-sign-canvas{width:100%;height:100%;background:#FFFFFF;display:block;touch-action:none}
.full-sign-bottombar{display:flex;justify-content:center;padding:12px 15px;background:#F5F5F5;border-top:1px solid #E0E0E0;flex-shrink:0}
.full-sign-confirm-btn{font-size:17px;color:#FFFFFF;background:#2563EB;padding:10px 40px;border-radius:6px;font-weight:bold;letter-spacing:2px;cursor:pointer}
.full-sign-disabled{background:#94A3B8;pointer-events:none}
.sign-rotate-tip{position:absolute;top:0;left:0;right:0;bottom:0;display:none;flex-direction:column;align-items:center;justify-content:center;background:#FFFFFF;z-index:10}
.sign-rotate-icon{font-size:48px;margin-bottom:12px;animation:rotateHint 2s ease infinite}
.sign-rotate-text{font-size:16px;color:#333;font-weight:bold}
@keyframes rotateHint{0%,100%{transform:rotate(0deg)}50%{transform:rotate(-90deg)}}