小程序完成（账号密码登录、风格修改、签字功能）
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<template>
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<view class="page">
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<cu-custom bgColor="bg-blue" :isBack="true"><block slot="backText">返回</block><block slot="content">签名确认</block></cu-custom>
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<view class="sign-container">
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<view class="sign-info">
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<text class="info-label">交接人：</text>
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<text class="info-value">{{handName}}</text>
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</view>
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<view class="canvas-wrapper">
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<canvas
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class="sign-canvas"
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canvas-id="signCanvas"
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@touchstart="touchStart"
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@touchmove="touchMove"
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@touchend="touchEnd"
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@touchcancel="touchEnd"
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disable-scroll="true"
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></canvas>
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</view>
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<view class="btn-container">
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<button class="clear-btn" @click="clearCanvas">清除</button>
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<button class="confirm-btn" @click="confirmSign">确认</button>
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</view>
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</view>
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</view>
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</template>
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<script>
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export default {
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data() {
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return {
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id: '',
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handName: '',
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ctx: null,
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isDrawing: false,
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hasSigned: false
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}
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},
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onLoad(options) {
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console.log('接收到的参数：', options);
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this.id = decodeURIComponent(options.id || '');
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this.handName = decodeURIComponent(options.handName || '');
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console.log('id:', this.id, 'handName:', this.handName);
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},
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onReady() {
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this.initCanvas();
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},
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methods: {
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initCanvas() {
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const ctx = uni.createCanvasContext('signCanvas', this);
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this.ctx = ctx;
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ctx.setStrokeStyle('#000000');
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ctx.setLineWidth(4);
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ctx.setLineCap('round');
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ctx.setLineJoin('round');
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},
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touchStart(e) {
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this.isDrawing = true;
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this.hasSigned = true;
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const touch = e.touches[0];
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this.ctx.beginPath();
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this.ctx.moveTo(touch.x, touch.y);
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},
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touchMove(e) {
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if (!this.isDrawing) return;
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const touch = e.touches[0];
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this.ctx.lineTo(touch.x, touch.y);
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this.ctx.stroke();
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},
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touchEnd(e) {
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if (this.isDrawing) {
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this.ctx.stroke();
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this.ctx.closePath();
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}
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this.isDrawing = false;
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},
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clearCanvas() {
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uni.getSystemInfo({
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success: (res) => {
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this.ctx.clearRect(0, 0, res.windowWidth, 800);
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}
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});
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this.hasSigned = false;
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},
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confirmSign() {
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if (!this.hasSigned) {
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uni.showToast({
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title: '请先签名',
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icon: 'none',
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duration: 2000
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});
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return;
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}
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uni.canvasToTempFilePath({
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canvasId: 'signCanvas',
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fileType: 'png',
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success: (res) => {
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console.log('签名图片路径：', res.tempFilePath);
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uni.showToast({
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title: '签名已确认',
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icon: 'success',
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duration: 2000
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});
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setTimeout(() => {
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uni.navigateBack();
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}, 500);
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},
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fail: (err) => {
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console.error('保存签名失败', err);
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uni.showToast({
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title: '签名保存失败',
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icon: 'none',
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duration: 2000
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});
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}
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}, this);
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}
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}
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}
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</script>
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<style>
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.page {
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width: 100vw;
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height: 100vh;
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background: #f5f5f5;
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}
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/* 签名容器 */
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.sign-container {
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display: flex;
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flex-direction: column;
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height: calc(100vh - 100rpx);
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padding: 30rpx;
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}
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/* 签名信息 */
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.sign-info {
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display: flex;
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align-items: center;
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padding: 30rpx;
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background: #fff;
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border-radius: 20rpx;
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margin-bottom: 30rpx;
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box-shadow: 0 4rpx 16rpx rgba(0, 0, 0, 0.08);
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flex-shrink: 0;
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}
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.info-label {
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font-size: 32rpx;
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color: #666;
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font-weight: 500;
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margin-right: 20rpx;
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}
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.info-value {
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font-size: 32rpx;
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color: #4a90e2;
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font-weight: 600;
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}
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/* 画布包裹层 */
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.canvas-wrapper {
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background: #fff;
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border-radius: 20rpx;
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padding: 20rpx;
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box-shadow: 0 4rpx 16rpx rgba(0, 0, 0, 0.08);
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flex: 1;
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min-height: 0;
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}
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/* 签名画布 */
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.sign-canvas {
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width: 100%;
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height: 800rpx;
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border: 2px dashed #d0dbe6;
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border-radius: 16rpx;
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background: #fafafa;
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}
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/* 按钮容器 */
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.btn-container {
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display: flex;
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justify-content: space-around;
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padding: 30rpx;
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flex-shrink: 0;
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}
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/* 清除按钮 */
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.clear-btn {
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flex: 1;
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margin-right: 20rpx;
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background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
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color: #666;
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border: none;
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border-radius: 24rpx;
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padding: 28rpx 0;
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font-size: 32rpx;
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font-weight: 600;
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box-shadow: 0 4rpx 16rpx rgba(0, 0, 0, 0.1);
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}
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.clear-btn::after {
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border: none;
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}
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/* 确认按钮 */
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.confirm-btn {
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flex: 1;
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margin-left: 20rpx;
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background: linear-gradient(135deg, #4a90e2 0%, #357abd 100%);
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color: #fff;
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border: none;
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border-radius: 24rpx;
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padding: 28rpx 0;
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font-size: 32rpx;
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font-weight: 600;
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box-shadow: 0 6rpx 24rpx rgba(74, 144, 226, 0.35);
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}
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.confirm-btn::after {
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border: none;
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}
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</style>
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