diff --git a/.gitignore b/.gitignore
index 332a007..9f0f521 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,6 +25,7 @@
 /.aws/
 
 # Local editor and assistant settings
+/.vs/
 /.idea/
 /.vscode/
 /.codex/
diff --git a/src/renderer/App.vue b/src/renderer/App.vue
index b81a3d0..74484d7 100644
--- a/src/renderer/App.vue
+++ b/src/renderer/App.vue
@@ -1,6 +1,7 @@
 <script setup lang="ts">
 import { computed,onMounted,onBeforeUnmount,watch } from 'vue'
 import { FileSpreadsheet,Stamp,History,Settings2,ShieldCheck,ArrowUpRight,LoaderCircle,TriangleAlert } from '@lucide/vue'
+import brandImage from './assets/brand.png'
 import WorkbenchView from './views/WorkbenchView.vue'
 import SealsView from './views/SealsView.vue'
 import HistoryView from './views/HistoryView.vue'
@@ -29,7 +30,7 @@ watch(()=>state.page,page=>{window.scrollTo(0,0);if(page==='workbench'&&state.re
 <template>
  <div class="app-shell">
   <aside class="sidebar">
-   <div class="brand"><div class="brand-mark">收</div><div><strong>收据工坊</strong><span>RECEIPT STUDIO</span></div></div>
+   <div class="brand"><img class="brand-mark" :src="brandImage" alt="" width="42" height="42" draggable="false"><div><strong>收据工坊</strong><span>RECEIPT STUDIO</span></div></div>
    <div class="nav-label">我的工作空间</div>
    <nav><button v-for="nav in navigation" :key="nav.id" :class="['nav-item',{active:state.page===nav.id}]" @click="navigate(nav.id)"><component :is="nav.icon" :size="19"/><span>{{nav.label}}</span><span v-if="nav.id==='history'&&state.historyTotal" class="nav-count">{{state.historyTotal}}</span></button></nav>
    <div class="sidebar-bottom"><div class="offline-note"><ShieldCheck :size="19"/><div><strong>安心在本地处理</strong><span>无需登录 · 离线可用</span></div></div><div class="app-version">收据工坊 v{{state.version}}<span>WIN 64</span></div></div>
diff --git a/src/renderer/assets/brand.png b/src/renderer/assets/brand.png
new file mode 100644
index 0000000..49ed0b3
Binary files /dev/null and b/src/renderer/assets/brand.png differ
diff --git a/src/renderer/style.css b/src/renderer/style.css
index 6746d9e..cdbffed 100644
--- a/src/renderer/style.css
+++ b/src/renderer/style.css
@@ -1,7 +1,7 @@
 
 :root{font-family:"Segoe UI","Microsoft YaHei UI","Microsoft YaHei",sans-serif;color:#253443;background:#f5f7fa;font-synthesis:none;font-size:13px;--green:#168576;--green-dark:#106e62;--muted:#89939f;--line:#e9edf1;--radius:13px}
 *{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}button,input,select{outline:none}button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid #47ab9b;outline-offset:3px}button{color:inherit}h1,h2,h3,p{margin:0}h2{font-size:15px;font-weight:650}h3{font-size:17px}input[type=checkbox]{accent-color:var(--green);width:15px;height:15px;cursor:pointer;vertical-align:middle;flex-shrink:0}input[type=range]{accent-color:var(--green);width:100%}input[readonly]{cursor:default}select{cursor:pointer}
-.app-shell{display:flex;min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:208px;background:white;border-right:1px solid var(--line);padding:30px 16px 18px;display:flex;flex-direction:column;z-index:2}.brand{display:flex;gap:11px;align-items:center;padding:0 9px 41px}.brand-mark{width:39px;height:42px;border-radius:12px;background:var(--green);color:#fff;display:grid;place-items:center;font-size:22px;font-family:SimSun,serif;box-shadow:0 5px 12px #1685761f}.brand strong{display:block;font-size:19px;letter-spacing:1.5px;font-weight:700}.brand span{display:block;color:#9ba7b0;font-size:8px;letter-spacing:1.7px;margin-top:4px}.nav-label{font-size:10px;color:#a4adb6;letter-spacing:1px;padding:0 15px 12px}.nav-item{width:100%;border:0;background:none;display:flex;align-items:center;gap:11px;text-align:left;padding:13px 15px;margin-bottom:7px;border-radius:9px;color:#7c8793;font-size:13px;font-weight:500}.nav-item:hover{background:#f5f8f8}.nav-item.active{color:var(--green);background:#eaf5f1;font-weight:650}.nav-count{margin-left:auto;font-size:10px;background:#e9eef0;padding:2px 6px;border-radius:5px}.sidebar-bottom{margin-top:auto}.offline-note{display:flex;align-items:center;gap:9px;padding:15px 10px;background:#f8faf9;border:1px solid #edf2ee;border-radius:10px;color:var(--green)}.offline-note strong{display:block;font-size:11px;font-weight:550;color:#536c64}.offline-note span{font-size:10px;color:#98a79f;display:block;margin-top:4px}.app-version{padding:19px 8px 0;color:#acb5bd;font-size:10px;display:flex;justify-content:space-between}.app-version span{font-size:8px;letter-spacing:.5px}
+.app-shell{display:flex;min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:208px;background:white;border-right:1px solid var(--line);padding:30px 16px 18px;display:flex;flex-direction:column;z-index:2}.brand{display:flex;gap:11px;align-items:center;padding:0 9px 41px}.brand-mark{width:42px;height:42px;flex-shrink:0;border-radius:12px;display:block;object-fit:cover;box-shadow:0 5px 12px #1685761f}.brand strong{display:block;font-size:19px;letter-spacing:1.5px;font-weight:700}.brand span{display:block;color:#9ba7b0;font-size:8px;letter-spacing:1.7px;margin-top:4px}.nav-label{font-size:10px;color:#a4adb6;letter-spacing:1px;padding:0 15px 12px}.nav-item{width:100%;border:0;background:none;display:flex;align-items:center;gap:11px;text-align:left;padding:13px 15px;margin-bottom:7px;border-radius:9px;color:#7c8793;font-size:13px;font-weight:500}.nav-item:hover{background:#f5f8f8}.nav-item.active{color:var(--green);background:#eaf5f1;font-weight:650}.nav-count{margin-left:auto;font-size:10px;background:#e9eef0;padding:2px 6px;border-radius:5px}.sidebar-bottom{margin-top:auto}.offline-note{display:flex;align-items:center;gap:9px;padding:15px 10px;background:#f8faf9;border:1px solid #edf2ee;border-radius:10px;color:var(--green)}.offline-note strong{display:block;font-size:11px;font-weight:550;color:#536c64}.offline-note span{font-size:10px;color:#98a79f;display:block;margin-top:4px}.app-version{padding:19px 8px 0;color:#acb5bd;font-size:10px;display:flex;justify-content:space-between}.app-version span{font-size:8px;letter-spacing:.5px}
 .main-content{margin-left:208px;padding:30px 30px 24px;flex:1;min-width:0;max-width:1900px}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:25px}.eyebrow{font-size:9px;color:#94a3a8;letter-spacing:1.7px;margin-bottom:9px}h1{font-size:25px;letter-spacing:.5px;font-weight:670}.page-header p{font-size:12px;color:#89939c;margin-top:9px}.header-status{display:flex;align-items:center;gap:8px;font-size:11px;color:#7d8b8c;background:#fff;border:1px solid var(--line);padding:9px 11px;border-radius:7px}.status-dot{width:6px;height:6px;background:#32a78d;border-radius:50%;display:inline-block;flex-shrink:0}.feedback{padding:11px 14px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-radius:8px;margin-bottom:16px;font-size:12px;line-height:1.6;overflow-wrap:anywhere}.feedback.error{background:#fff1ef;color:#a84e43;border:1px solid #f3d7d2}.feedback.success{background:#eaf6f0;color:#347361;border:1px solid #d6e9df}.feedback button{border:0;background:none;color:inherit;display:flex}.stats-grid{display:grid;grid-template-columns:1fr 1.15fr 1.15fr;gap:18px;margin-bottom:22px}.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);display:flex;align-items:center;gap:13px;padding:20px;min-width:0;position:relative;min-height:98px}.stat-icon{width:43px;height:43px;display:grid;place-items:center;border-radius:12px;flex-shrink:0}.stat-icon.green{background:#eaf6f0;color:#299a7e}.stat-icon.amber{background:#fff6e9;color:#c4994f;font-size:22px}.stat-icon.blue{background:#eef2fb;color:#7993ca}.stat-label{display:block;font-size:11px;color:#909ba5;margin-bottom:7px}.stat-card strong{font-size:26px;line-height:1;font-weight:640;letter-spacing:.4px}.stat-card small{font-size:11px;color:#a1a9af;font-weight:400}.stat-sub{font-size:10px;color:#a2acb4;margin-left:auto;align-self:flex-end;white-space:nowrap}.stat-card strong.money-stat{font-size:25px}.stat-seal{min-width:0;flex:1}.stat-card strong.seal-name{font-size:13px;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;line-height:1.5;letter-spacing:0}
 .panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.workspace-grid{display:grid;grid-template-columns:minmax(365px,1.13fr) minmax(345px,1fr);gap:20px;align-items:stretch}.data-panel{display:flex;flex-direction:column;min-height:0}.data-panel>*{flex-shrink:0}.data-panel .import-empty{flex:1}.panel-heading{padding:21px 20px 18px;display:flex;gap:10px;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.panel-heading p{font-size:11px;color:#9aa4ad;margin-top:7px;line-height:1.6}.button-row{display:flex;align-items:center;gap:8px;flex-shrink:0}.button{border:1px solid #dce4e7;background:white;display:inline-flex;align-items:center;justify-content:center;gap:7px;border-radius:7px;padding:10px 15px;white-space:nowrap;font-size:12px;font-weight:500;transition:background .15s}.button:hover:not(:disabled){background:#f5f8f7}.button.primary{background:var(--green);border-color:var(--green);color:white;box-shadow:0 2px 3px #0f5e5512}.button.primary:hover:not(:disabled){background:var(--green-dark)}.button.subtle{background:#f9fbfa;border-color:#e4ebe9;color:#60766e;box-shadow:none}.button.danger{background:#fff7f5;border-color:#f0dcd7;color:#b3695b}.button.danger:hover:not(:disabled){background:#ffede8}.button.compact{font-size:11px;padding:8px 10px;gap:5px}.text-button{border:0;padding:0;background:none;color:var(--green);display:inline-flex;align-items:center;justify-content:center;gap:4px;font-size:11px;white-space:nowrap}.text-button:hover{text-decoration:underline}.icon-button{border:0;background:none;padding:6px;color:#8b99a3;display:inline-flex;align-items:center;justify-content:center;border-radius:6px}.icon-button:hover:not(:disabled){background:#f0f5f3;color:var(--green)}.badge{display:inline-flex;padding:2px 6px;background:#eff3f5;border-radius:5px;color:#92a0a8;font-size:10px;margin-left:4px;vertical-align:middle}.import-empty{min-height:424px;display:flex;align-items:center;flex-direction:column;justify-content:center;padding:30px 20px}.empty-file-icon{position:relative;width:81px;height:90px;background:#eff7f3;color:#62a28e;border:1px solid #dbece3;border-radius:14px;display:grid;place-items:center;margin-bottom:23px;transform:rotate(-4deg)}.file-tag{position:absolute;bottom:12px;right:-11px;background:white;color:#4c9480;box-shadow:0 2px 7px #557d6c12;padding:4px 8px;border-radius:4px;font-size:8px;font-weight:700;letter-spacing:.5px;transform:rotate(4deg)}.import-empty h3{font-size:16px;font-weight:550;margin-bottom:11px}.import-empty p{font-size:11px;color:#9ba6af;line-height:1.9;text-align:center;margin-bottom:23px}.import-empty>.text-button{margin-top:15px;font-size:10px}.import-steps{display:flex;align-items:center;gap:12px;margin-top:38px;color:#a1adb4;font-size:10px}.import-steps span:not(.step-line){display:flex;gap:5px;align-items:center}.import-steps i{width:16px;height:16px;border-radius:50%;background:#f1f5f4;font:9px "Segoe UI";display:grid;place-items:center;color:#91a89e}.step-line{height:1px;width:26px;background:#e7eeea}.preview-live{font-size:10px;color:#89a69b;display:flex;align-items:center;gap:5px;white-space:nowrap}.preview-toolbar{display:flex;justify-content:space-between;align-items:center;gap:6px;padding:14px 17px}.preview-toolbar>span{font-size:9px;color:#a3adb5;white-space:nowrap}.segmented{display:inline-flex;padding:3px;background:#f2f5f5;border-radius:6px;gap:2px}.segmented button{border:0;background:none;border-radius:4px;color:#919fa7;font-size:10px;padding:6px 9px;white-space:nowrap}.segmented button.active{background:white;color:#376b5c;box-shadow:0 1px 4px #354e4210}.preview-canvas{padding:22px 0;min-height:290px;background:#f1f4f6;display:flex;justify-content:center;align-items:center;overflow:hidden;background-image:radial-gradient(#d6dee5 .65px,transparent .65px);background-size:10px 10px}.paper-wrap{position:relative;background:white;box-shadow:0 4px 18px #283e4c13}.paper-wrap iframe{position:absolute;left:0;top:0;transform-origin:top left;border:0;display:block;background:white;pointer-events:none}.preview-placeholder{color:#99a5af;font-size:12px}.seal-select-row{display:flex;gap:8px;align-items:center;padding:18px 18px 0;color:#87968e}.seal-select-row label{font-size:11px;white-space:nowrap}.seal-select-row select{flex:1;min-width:0;font-size:11px;border:1px solid #e2e8e7;padding:8px;border-radius:6px;background:#fff;color:#4f625c}.preview-footnote{text-align:center;font-size:9px;color:#a0acb3;padding:14px}.bind-seal-link{display:flex;justify-content:center;align-items:center;gap:5px;background:none;border:0;color:var(--green);font-size:10px;margin:10px auto 0}.export-panel{margin-top:21px}.export-options{display:flex;flex-wrap:wrap;align-items:center;gap:20px;padding:19px 21px;border-bottom:1px solid var(--line)}.export-title{display:flex;gap:8px;align-items:center;color:#52665e;margin-right:8px}.export-title h2{font-size:13px;color:#42544d}.export-options label,.checkbox-row label{display:flex;gap:6px;align-items:center;font-size:11px;color:#6e7c85}.export-format-groups{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:16px;flex:1 1 540px;min-width:0}.export-format-group{min-width:0;margin:0;border:1px solid #e5ebe9;border-radius:8px;padding:10px 14px 12px}.export-format-group legend{padding:0 5px;color:#60766e;font-size:11px;font-weight:550}.export-format-controls{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;min-height:29px}.export-format-group p{font-size:10px;color:#98a59f;margin-top:8px;line-height:1.6}.export-print-group{background:#f8fbfa}.export-format-controls .print-layout-control{gap:8px}.export-options select{font-size:11px;border:1px solid #e3e8eb;border-radius:5px;padding:6px 9px;background:#fff;color:#6e8077}.export-options select:disabled{background:#f0f3f2;color:#a7b1ac;cursor:not-allowed}.export-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:17px 21px}.output-location{display:flex;align-items:center;gap:10px;color:#95a2aa;min-width:0}.output-location>div{min-width:0}.output-location span{font-size:9px;color:#a3adb5;display:block;margin-bottom:5px}.output-location>div>button{display:block;max-width:560px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border:0;background:none;padding:0;text-align:left;color:#6b7c84;font-size:11px}.export-button{padding:11px 20px}.progress-area{padding:15px 22px;background:#fbfdfb}.progress-area>div:first-child{display:flex;justify-content:space-between;font-size:11px;color:#6c8479}.progress-track{height:5px;border-radius:10px;background:#e9f0ec;margin-top:9px;overflow:hidden}.progress-track div{height:100%;background:#39a58b;transition:width .2s}.file-bar{display:flex;gap:7px;align-items:center;padding:12px 18px;background:#fafcfb;font-size:11px;color:#5b7f70}.file-bar>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}.file-bar small{margin-left:auto;white-space:nowrap;color:#9aa8a0}.inline-note{margin:10px 18px;padding:10px 12px;background:#f4f8f6;color:#71897e;font-size:11px;line-height:1.7;border-radius:6px;display:flex;gap:6px;align-items:flex-start}.inline-note.warning{background:#fff8e9;color:#ae8b4c}.inline-note .text-button{margin-left:auto}.table-toolbar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;gap:12px}.search-input{display:flex;gap:5px;align-items:center;max-width:170px;color:#abb5bc}.search-input input{border:0;width:100%;min-width:0;font-size:10px;padding:4px;background:none}.data-table-scroll{overflow:auto;flex:1 1 0px;min-height:285px}.data-table{border-collapse:collapse;width:100%;font-size:11px;text-align:left}.data-table th{background:#f8fafb;color:#94a0ab;font-size:10px;font-weight:500;padding:12px 12px;white-space:nowrap;position:sticky;top:0;z-index:1}.data-table td{padding:15px 12px;border-bottom:1px solid #f0f3f5;line-height:1.5;vertical-align:middle}.data-table tbody tr{cursor:pointer}.data-table tbody tr:hover{background:#f8fcfa}.data-table tr.focused{background:#f0f8f4}.data-table strong{font-weight:500}.check-cell{width:34px;padding-left:16px!important;padding-right:2px!important}.row-number{font-size:10px;color:#a2adb5}.table-secondary{display:block;font-size:10px;color:#9aa6af;margin-top:5px}.align-right{text-align:right}.numeric{font-variant-numeric:tabular-nums;white-space:nowrap}.row-error,.row-warning{display:block;font-size:10px;color:#ba665a;margin-top:5px;max-width:300px;white-space:normal}.row-warning{color:#b38e4d}.state-tag{display:inline-flex;border-radius:4px;font-size:10px;padding:3px 6px;white-space:nowrap}.state-tag.danger{color:#ba6b60;background:#fff0ed}.state-tag.warning{color:#b29250;background:#fff8e9}.state-tag.ok{color:#438d74;background:#eaf6ef}.valid-label{display:inline-flex;align-items:center;gap:3px;white-space:nowrap;color:#6b9b84;font-size:10px}.table-footer{padding:12px 16px;font-size:9px;color:#9ba7b0;display:flex;align-items:center;justify-content:space-between;gap:8px;border-top:1px solid var(--line)}.pagination{display:flex;align-items:center;gap:7px;white-space:nowrap}.pagination button{border:0;background:none;color:#8fa39a;display:flex;padding:2px}.empty-table{text-align:center;color:#a2adb4;height:100px}
 .folder-banner{display:flex;align-items:center;gap:10px;margin:20px;padding:14px 15px;background:#f7faf8;border:1px solid #e7eeea;border-radius:8px;color:#83978c;font-size:12px}.folder-banner>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.folder-banner .text-button{margin-left:auto}.large-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:390px;padding:35px}.empty-circle{width:78px;height:78px;display:grid;place-items:center;background:#eef6f2;color:#78aa95;border-radius:22px;margin-bottom:24px}.large-empty h3{font-size:17px;font-weight:550;margin-bottom:12px}.large-empty p{font-size:12px;color:#9aa6ad;margin-bottom:25px;line-height:1.8;text-align:center}.seal-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:19px;padding:3px 22px 25px}.seal-card{border:1px solid #e5eaed;background:#fff;border-radius:11px;padding:12px;text-align:left;transition:border-color .15s}.seal-card.selected{border-color:#39a48b;box-shadow:0 0 0 2px #3f9b8010}.seal-card:hover{border-color:#75b8a3}.seal-image-stage{height:150px;position:relative;background-color:#fafafa;background-image:linear-gradient(45deg,#f0f0f0 25%,transparent 25%),linear-gradient(-45deg,#f0f0f0 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#f0f0f0 75%),linear-gradient(-45deg,transparent 75%,#f0f0f0 75%);background-size:16px 16px;background-position:0 0,0 8px,8px -8px,-8px 0;display:flex;align-items:center;justify-content:center;border-radius:7px;overflow:hidden}.seal-image-stage img{max-width:85%;max-height:85%;object-fit:contain}.seal-check{position:absolute;right:9px;top:9px;width:23px;height:23px;display:grid;place-items:center;color:#fff;background:var(--green);border-radius:50%}.seal-card-label{display:flex;align-items:center;gap:7px;margin-top:13px;color:#80908b}.seal-card-label strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:550;color:#53695e}.seal-card>small{display:block;color:#a2ada7;font-size:10px;margin:7px 0 3px 22px}.helper-note{display:flex;align-items:center;gap:10px;padding:20px 5px;font-size:11px;color:#8e9e96}.helper-note .text-button{margin-left:auto}.history-search{padding:18px 21px;display:flex;align-items:center;gap:15px}.history-search input{max-width:330px}.history-search>span{font-size:11px;color:#a0acb4;margin-left:auto}.history-table-wrap{overflow:auto;padding-bottom:15px}.history-table td,.history-table th{padding:18px 20px}.history-table th{font-size:12px;font-weight:600;color:#6b7d87}.history-table tr{cursor:default!important}.history-message{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.modal-backdrop{position:fixed;inset:0;z-index:5;background:#253a4859;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(2px)}.modal-card{width:760px;max-width:90vw;background:white;border-radius:15px;overflow:hidden;box-shadow:0 20px 80px #20354130}.modal-footer{padding:17px;text-align:center;font-size:11px;color:#93a098}