diff --git a/docs/superpowers/specs/2026-06-11-judgment-logic-design.md b/docs/superpowers/specs/2026-06-11-judgment-logic-design.md
new file mode 100644
index 0000000..3451e80
--- /dev/null
+++ b/docs/superpowers/specs/2026-06-11-judgment-logic-design.md
@@ -0,0 +1,245 @@
+# 判定逻辑补全设计（二期）
+
+> 关联文档：一期设计 `2026-05-15-rust-tauri-mvp-design.md`；需求来源 `docs/建材放射性检测结果分析软件开发计算逻辑(1).pdf`。
+
+## 1. 目标
+
+一期已完成算法骨架（IRa/Ir、A/B 类不确定度、GUM 合成、MCM 仿真）。本期补齐 PDF 第 3、6 节缺失的**判定层与输出层**，使软件能给出最终交付给用户的"有效性 + 合格/不合格 + 材料分级"结论，而不只是中间量。
+
+补齐范围：
+
+- 1.3 样品信息：材料类型选择与对应限值集。
+- 2.2.4–2.2.6：扩展不确定度 U、k=1/k=2 相对扩展不确定度、GUM 解析真值区间 P2.5/P97.5。
+- 3.1 有效性判定（37 Bq/kg 低活度豁免 + Ur(IRa) 阈值）。
+- 3.2 临界值判定（真值区间是否跨越极限值 → 合格/不合格/建议增加次数）。
+- 3.2.3 装饰装修材料 A/B/C 三级分类。
+- 单次测量（n=1）主流程支持。
+- 6.1 输出元信息（样品编号、计算日期）。
+- 修正合成不确定度中 A 类项缺少校准因子 `a` 的问题。
+
+非目标（仍延后）：SQLite 历史、Excel/PDF 报告导出。本期只在内存结构和界面上给出完整结论，导出留三期。
+
+## 2. 与现状的差距映射
+
+| PDF 节 | 现状 | 本期动作 |
+|---|---|---|
+| 1.3 材料类型 | 无，仅手填 limit | 新增 `MaterialType`，按类型派生限值 |
+| 2.2.4 扩展不确定度 | 无 | `IndexResult` 增 `expanded_uncertainty` |
+| 2.2.5 k=1/k=2 相对 | 仅一套(k=1) | 增 `relative_expanded_uncertainty_percent` |
+| 2.2.6 GUM 真值区间 | 仅 MCM 百分位 | `IndexResult` 增 `p2_5/p97_5 = value ± U` |
+| 3.1 有效性 | 仅 Ur≤20% 双指数 | 实现 37 Bq/kg 豁免，仅看 Ur(IRa) |
+| 3.2 临界值判定 | 无 | 新增 `Verdict` 判定函数 |
+| 3.2.3 A/B/C | 无 | 装饰材料级联分类 |
+| 单次测量 | `count<2` 报错 | n=1 时 uA=0 放行 |
+| 6.1 元信息 | 无 | 输入/输出增 `sample_id`、`calculation_date` |
+| 合成不确定度 A 类项 | 漏 `a` 因子 | 修正为 `a·uA` |
+
+## 3. 领域模型变更（`domain.rs`）
+
+### 3.1 输入
+
+```rust
+pub struct SampleInput {
+    pub ra: NuclideMeasurements,
+    pub th: NuclideMeasurements,
+    pub k: NuclideMeasurements,
+    #[serde(default)]
+    pub material_type: MaterialType,   // 新增，默认 BuildingMainBody
+    #[serde(default)]
+    pub sample_id: Option<String>,     // 新增 6.1
+    #[serde(default)]
+    pub calculation_date: Option<String>, // 新增 6.1，前端传 ISO 字符串
+}
+
+#[derive(Default)]
+pub enum MaterialType {
+    #[default]
+    BuildingMainBody,        // 建筑主体材料        IRa≤1.0, Ir≤1.0
+    HollowBuildingMainBody,  // 空心率>25%主体材料  IRa≤1.0, Ir≤1.3
+    DecorativeMaterial,      // 装饰装修材料        A/B/C 分级
+}
+```
+
+`AcceptanceLimits` 不再由前端手填，改为由 `MaterialType` 派生（保留结构体用于 MCM 比较）。装饰材料有多级限值，用一张分级表表达：
+
+```rust
+pub struct LimitTier { pub label: &'static str, pub ira_limit: Option<f64>, pub ir_limit: Option<f64> }
+
+impl MaterialType {
+    /// 返回从严到宽的限值阶梯。主体材料/空心材料各 1 级；装饰材料 A/B/C 三级。
+    pub fn tiers(&self) -> &'static [LimitTier] { /* 见下表 */ }
+}
+```
+
+限值表（来自 PDF 3.2）：
+
+| 材料类型 | 级别 | IRa 限 | Ir 限 |
+|---|---|---|---|
+| 主体材料 | 合格 | 1.0 | 1.0 |
+| 空心率>25% | 合格 | 1.0 | 1.3 |
+| 装饰装修 | A | 1.0 | 1.3 |
+| 装饰装修 | B | 1.3 | 1.9 |
+| 装饰装修 | C | — | 2.8 |
+
+> C 类只约束 Ir（`ira_limit = None`）。
+
+### 3.2 指数结果扩展
+
+```rust
+pub struct IndexResult {
+    pub value: f64,
+    pub standard_uncertainty: f64,                  // u, 已有
+    pub expanded_uncertainty: f64,                  // U = u·k (k=2)，新增
+    pub relative_uncertainty_percent: f64,          // k=1，已有
+    pub relative_expanded_uncertainty_percent: f64, // k=2，新增
+    pub p2_5: f64,   // value - U，新增（GUM 解析区间）
+    pub p97_5: f64,  // value + U，新增
+}
+```
+
+指数包含因子固定 `k = 2`（PDF 2.2.4/2.2.6）。
+
+### 3.3 判定结果
+
+```rust
+pub struct CalculationResult {
+    /* 既有字段 ... */
+    pub analysis: AnalysisResult,   // 新增
+}
+
+pub struct AnalysisResult {
+    pub total_calibrated_activity: f64, // A1·a+A2·b+A3·c
+    pub validity: Validity,
+    pub verdict: Verdict,
+}
+
+pub enum Validity {
+    LowActivityExempt,      // ≤37 Bq/kg，直接有效
+    UncertaintyAcceptable,  // >37 且 Ur(IRa)≤20%
+    Invalid,                // >37 且 Ur(IRa)>20%
+}
+
+pub enum Verdict {
+    Qualified,              // 主体/空心：合格
+    Unqualified,            // 不合格
+    DecorativeClass(DecorClass), // 装饰：A/B/C
+    NeedMoreMeasurements,   // 真值区间跨越极限值，建议增加到 6 次
+    InvalidResult,          // 有效性不成立
+}
+
+pub enum DecorClass { A, B, C, Unqualified }
+```
+
+`Conclusion` 枚举保留（向后兼容），但 UI 主结论改用 `Verdict`。
+
+## 4. 计算逻辑变更（`calculator.rs`）
+
+### 4.1 单次测量支持
+
+`validate_input`：`count` 下限由 2 改为 1，且三核素次数一致。`type_a_uncertainty`：`n == 1` 时返回 `0.0`（PDF 2.2.1 uA=0），`n>=6` 走标准差法，`2<=n<6` 走极差法，`n` 其它非法值仍报错。
+
+### 4.2 合成不确定度修正
+
+校准比活度 `C = mean·a`，对测量值 A 的灵敏系数是 `a`：
+
+```rust
+// 修正前: combined = sqrt(uA² + (mean·uB)²)
+// 修正后: combined = sqrt((a·uA)² + (mean·uB)²)
+let combined = ((factor*type_a).powi(2) + (mean*type_b_uncertainty).powi(2)).sqrt();
+```
+
+n=1（uA=0）时与现状一致，可与 PDF 单次算例对齐校验。
+
+### 4.3 GUM 真值区间
+
+每个 `IndexResult` 计算 `U = u·2`，`p2_5 = value - U`，`p97_5 = value + U`，相对量两套（u/value 与 U/value）。
+
+### 4.4 有效性判定（3.1）
+
+```rust
+let total = ra.mean_calibrated + th.mean_calibrated + k.mean_calibrated; // A1·a+A2·b+A3·c
+let validity = if total <= 37.0 {
+    Validity::LowActivityExempt
+} else if ira.relative_expanded_uncertainty_percent <= 20.0 {
+    Validity::UncertaintyAcceptable
+} else {
+    Validity::Invalid
+};
+```
+
+> **待确认 1**：3.1 的 `Ur(IRa)≤20%` 用 k=2 的相对扩展不确定度（与 2.2.5 命名一致）还是 k=1。本设计先取 k=2，见第 7 节。
+
+### 4.5 临界值判定（3.2）
+
+核心是"真值区间 [P2.5,P97.5] 相对极限值 L 的位置"的三态函数：
+
+```rust
+enum TierCheck { Pass, Fail, Straddle } // 全在限下 / 全在限上 / 跨越
+
+fn check(idx: &IndexResult, limit: Option<f64>) -> TierCheck {
+    let Some(l) = limit else { return TierCheck::Pass }; // 无约束（如 C 类的 IRa）
+    if idx.p97_5 < l { TierCheck::Pass }       // 区间不含 L 且值 < L
+    else if idx.p2_5 > l { TierCheck::Fail }   // 区间不含 L 且值 > L
+    else { TierCheck::Straddle }               // 区间含 L → 建议增加次数
+}
+```
+
+组合规则：
+
+- 若 `validity == Invalid` → `Verdict::InvalidResult`。
+- **主体/空心材料**（单级）：IRa、Ir 两项 `check`。
+  - 任一 `Straddle` → `NeedMoreMeasurements`。
+  - 两项均 `Pass` → `Qualified`。
+  - 否则（存在 `Fail`）→ `Unqualified`。
+- **装饰材料**（A→B→C 级联）：自严到宽逐级判断。
+  - 某级两项（C 级仅 Ir）均 `Pass` → 归该级（`DecorClass::A/B/C`）。
+  - 某级存在 `Straddle` 且尚未在更严级别通过 → `NeedMoreMeasurements`。
+  - 全部级别都不通过且 C 级 `Fail` → `DecorClass::Unqualified`（不可用于建材）。
+
+### 4.6 与 MCM 的衔接
+
+GUM 路径给出确定性 `Verdict`；当 `Verdict::NeedMoreMeasurements`（区间跨越极限值）时，MCM 的 `overall_fail_probability` 即 PDF 6.3 的"95% 置信概率下不符合概率"，作为补充量化结论展示。MCM 仍每次都算（用当前限值），无需新增接口。
+
+> **待确认 2**：6 次测量后若仍跨越极限值，最终合格判据用 MCM 不符合概率阈值（如 <5% 判合格）还是仅展示概率由人判断。现有代码用 `pass_probability>=0.95`，本设计沿用并在第 7 节标注。
+
+## 5. 界面变更（`App.tsx`）
+
+- 顶部输入区：新增**材料类型**下拉（三选一）、**样品编号**输入、**计算日期**选择（默认今日）。移除手填 IRa/Ir 限值，改为根据材料类型只读展示当前限值表。
+- 结果区新增"**分析判定**"卡片：
+  - 有效性标签（有效/低活度豁免/无效）+ 总比活度 `A1·a+A2·b+A3·c` 与 37 对比。
+  - 最终判定标签：合格 / 不合格 / A 类·B 类·C 类 / 建议增加至 6 次 / 结果无效。
+  - 各指数 GUM 真值区间 `[P2.5, P97.5]`、U、相对扩展不确定度（k=1/k=2）。
+- 报告头展示样品编号与计算日期，为三期导出做准备。
+
+类型定义（TS）同步扩展 `MaterialType`、`AnalysisResult`、`Verdict`、`IndexResult` 新字段。
+
+## 6. 测试（`tests/calculator_tests.rs`）
+
+新增：
+
+- **单次测量对齐 PDF 算例**：A1=83.439/a=0.916 等，断言 IRa≈0.38、Ir≈0.73、u(IRa)≈0.012、U(IRa)≈0.024、P2.5≈0.36、P97.5≈0.40、Ur(IRa,k=2)≈6.3%。
+- **有效性**：total≤37 → `LowActivityExempt`；total>37 且 Ur 大 → `Invalid`。
+- **临界值三态**：构造区间全低/全高/跨越，断言 `Qualified`/`Unqualified`/`NeedMoreMeasurements`。
+- **装饰材料级联**：分别命中 A、B、C 与 Unqualified。
+- **合成不确定度修正**：多次测量下 A 类项含 `a` 因子（与手算对比）。
+- 既有 6 次测量与 MCM 测试保持通过（注意修正后数值会有小幅变化，需更新期望值）。
+
+## 7. 已确认决策
+
+1. **3.1 的 Ur(IRa) 取 k=2 的相对扩展不确定度**（`relative_expanded_uncertainty_percent`），与 2.2.5 命名一致。✅ 已定
+2. **6 次测量后的最终合格判据**：用 MCM 不符合概率，`overall_fail_probability < 5%`（即 `pass_probability ≥ 0.95`）自动判合格/不合格。✅ 已定
+3. **材料类型限值只读**：移除前端手填 IRa/Ir 限值，严格按材料类型派生。✅ 已定
+
+仍按本设计默认处理、无需进一步确认：
+
+4. **计算日期来源**：由前端生成 ISO 字符串传入（本地时区可控，Rust 侧不引入 `chrono`）。
+5. **单次测量仍跑 MCM**：n=1 时 uA=0，MCM 仅传播 B 类不确定度，仍有意义，默认保留。
+
+## 8. 实施顺序
+
+1. `domain.rs`：`MaterialType`/限值表 + `IndexResult` 扩展 + `AnalysisResult/Verdict`。
+2. `calculator.rs`：单次测量、合成不确定度修正、GUM 区间、有效性、临界值判定。
+3. 补充/更新 Rust 测试至全绿（先对齐 PDF 单次算例）。
+4. `lib.rs` 导出新类型；`main.rs` 命令签名无需变更（结构体透传）。
+5. `App.tsx`：材料类型/样品信息输入 + 分析判定卡片。
+6. 端到端手测三类材料的合格/不合格/分级/建议增加次数路径。
diff --git a/docs/superpowers/specs/2026-06-11-persistence-report-design.md b/docs/superpowers/specs/2026-06-11-persistence-report-design.md
new file mode 100644
index 0000000..dc9ba10
--- /dev/null
+++ b/docs/superpowers/specs/2026-06-11-persistence-report-design.md
@@ -0,0 +1,152 @@
+# 历史存储与报告导出设计（三期）
+
+> 关联：一期 `2026-05-15-rust-tauri-mvp-design.md`、二期 `2026-06-11-judgment-logic-design.md`。
+> 对应 PDF 第 6 节「输出」：样品编号、计算日期、最佳估计值、95% 置信区间、k=1 相对扩展不确定度、不符合概率。
+
+## 1. 目标
+
+一/二期已完成计算与判定。本期补齐"留痕与出报告"两块工程能力：
+
+- **历史存储**：每次计算的输入与结果落库，可检索、回看、复算、删除。
+- **报告导出**：将一次完整结果导出为可交付文件（PDF 检测报告 + Excel 数据表）。
+
+非目标：多用户/权限、云同步、检测报告的官方排版模板（先满足内容完整、可打印）。
+
+## 2. 范围
+
+| 能力 | 内容 |
+|---|---|
+| 历史存储 | 保存/列表/详情/删除/复算一条记录 |
+| Excel 导出 | 单条记录导出为 `.xlsx`（输入表 + 结果表 + 判定） |
+| PDF 报告 | 单条记录导出为 A4 检测报告（中文） |
+| 列表检索 | 按样品编号 / 日期范围 / 材料类型 / 判定结论过滤 |
+
+## 3. 数据模型与存储
+
+### 3.1 选型
+
+SQLite，经由 **`rusqlite`（bundled 特性）** 直接在 `src-tauri` 内访问，不引入 `tauri-plugin-sql`。理由：计算结果是结构化 JSON，存取简单；bundled 模式免去系统 SQLite 依赖，Windows 打包干净。
+
+库文件位置：`tauri::api::path::app_data_dir()` 下的 `history.db`（随应用数据目录，卸载可清理）。
+
+### 3.2 表结构
+
+```sql
+CREATE TABLE IF NOT EXISTS records (
+    id            INTEGER PRIMARY KEY AUTOINCREMENT,
+    sample_id     TEXT,               -- 样品编号（可空）
+    material_type TEXT NOT NULL,       -- MaterialType 序列化
+    calc_date     TEXT,               -- 计算日期 YYYY-MM-DD
+    created_at    TEXT NOT NULL,       -- 入库时间 RFC3339（前端传入）
+    ira_value     REAL NOT NULL,       -- 冗余列，供列表展示/排序/过滤
+    ir_value      REAL NOT NULL,
+    validity      TEXT NOT NULL,       -- Validity 序列化
+    verdict       TEXT NOT NULL,       -- Verdict 序列化（用于列表标签与过滤）
+    input_json    TEXT NOT NULL,       -- 完整 SampleInput
+    result_json   TEXT NOT NULL        -- 完整 CalculationResult
+);
+CREATE INDEX IF NOT EXISTS idx_records_created ON records(created_at);
+CREATE INDEX IF NOT EXISTS idx_records_sample ON records(sample_id);
+```
+
+设计要点：完整 `input_json` / `result_json` 保证回看与复算的保真；冗余标量列只为列表查询与过滤，避免反序列化全表。
+
+### 3.3 复算保真
+
+复算 = 读 `input_json` → `calculate_sample` 重新计算。因 MCM 用固定种子，结果可复现，可与存档 `result_json` 比对作为一致性自检（库内核版本升级时用于回归）。
+
+## 4. 后端命令（`src-tauri`）
+
+新增 Tauri 命令，全部返回 `Result<_, String>`：
+
+```rust
+save_record(input: SampleInput, result: CalculationResult, created_at: String) -> i64   // 返回 id
+list_records(filter: RecordFilter) -> Vec<RecordSummary>
+get_record(id: i64) -> RecordDetail        // 含 input + result
+delete_record(id: i64) -> ()
+export_excel(id: i64, path: String) -> ()  // 写 .xlsx 到用户选定路径
+export_report(id: i64, path: String) -> () // 见第 6 节
+```
+
+```rust
+struct RecordFilter {
+    sample_id: Option<String>,      // 模糊匹配
+    material_type: Option<MaterialType>,
+    date_from: Option<String>,
+    date_to: Option<String>,
+    verdict_kind: Option<String>,   // "Qualified" / "Unqualified" / ...
+}
+struct RecordSummary {
+    id: i64, sample_id: Option<String>, material_type: MaterialType,
+    calc_date: Option<String>, created_at: String,
+    ira_value: f64, ir_value: f64, validity: Validity, verdict: Verdict,
+}
+```
+
+数据库连接用 `tauri::State<Mutex<Connection>>` 在 `setup` 中初始化并建表。
+
+新增 crate（`src-tauri/Cargo.toml`）：`rusqlite { features = ["bundled"] }`、`rust_xlsxwriter`。PDF 方案见第 6 节（可能 0 依赖）。
+
+## 5. Excel 导出
+
+用 `rust_xlsxwriter`（纯 Rust、原生 UTF-8，无 CJK 字体问题）。生成单工作簿三段：
+
+1. **样品信息**：编号、日期、材料类型、有效性、最终判定。
+2. **测量与校准**：各次 Ra/Th/K 测量值；校准系数 a/U/k。
+3. **结果**：IRa/Ir 值、u、U、相对扩展不确定度(k=1/k=2)、真值区间；各核素均值/校准活度/A 类/B 类/合成；MCM 平均值/标准偏差/区间/合格概率/不符合概率。
+
+路径经 `@tauri-apps/plugin-dialog` 的保存对话框选定，Rust 侧写文件。
+
+## 6. PDF 报告
+
+中文 PDF 字体内嵌是主要难点，给两条路线，**推荐路线 A**：
+
+- **路线 A（推荐）— Webview 打印**：前端用一个独立的、A4 排版的「报告视图」组件渲染完整结果，调用 `window.print()`（或 Tauri 打印 API），用户在打印对话框选「另存为 PDF」。零新依赖、零字体问题、排版用 CSS 即可，所见即所得。代价：依赖系统打印到 PDF，非完全静默导出。
+- **路线 B — Rust 生成**：`printpdf` + 内嵌中文子集字体（如 Noto Sans SC）。可完全静默、可定制页眉页脚，但需打包字体、自行处理换行与分页，工作量大。
+
+建议本期落 A，把"报告视图"做成可复用组件（同一组件既用于屏幕预览也用于打印），路线 B 留作后续真正"一键静默导出"需求时再做。
+
+报告内容（对应 PDF 6.1–6.3）：
+
+- 抬头：样品编号、计算日期、材料类型、限值表。
+- 检测结果：IRa、Ir 最佳估计值；95% 真值区间 [P2.5, P97.5]；k=1 / k=2 相对扩展不确定度。
+- 有效性判定（总比活度 vs 37）、最终判定（合格/不合格/A·B·C/建议增加次数）。
+- MCM：95% 置信概率下不符合概率。
+- 各核素中间量明细表。
+
+## 7. 界面变更
+
+- 顶部加「保存到历史」按钮（计算成功后可用）；保存成功后提示。
+- 新增「历史」入口（抽屉或独立 Tab）：列表（编号/日期/材料/IRa/Ir/判定）+ 过滤栏；行操作「查看 / 复算 / 导出 Excel / 导出 PDF / 删除」。
+- 「查看」打开报告视图（即打印用组件）。
+- 计算日期从已有的 DatePicker 复用，`created_at` 取前端当前时间戳。
+
+## 8. 测试
+
+- Rust：DB 用内存库（`:memory:`）测 save→list→get→delete 往返；过滤条件命中；`export_excel` 生成非空且能被重新打开（校验首部魔数/可解析）。
+- 复算一致性：存档 `result_json` 与重算结果逐字段相等（固定种子）。
+- 前端：报告视图快照（关键字段渲染）、历史列表过滤交互。
+
+## 9. 已确认决策
+
+1. **PDF 路线**：路线 A —— 前端 A4 报告视图 + `window.print()` 另存为 PDF。✅
+2. **历史入口形态**：顶部 Tab 切换（计算 / 历史两页）。✅
+3. **保存时机**：仅用户点「保存到历史」时入库，避免调参脏数据。✅
+4. **导出范围**：PDF 报告 + Excel 数据表都做（实现独立，可分批落地）。✅
+
+## 9.5 实现说明（落地后补记）
+
+- **rusqlite 版本**：本地 Rust 为 1.93，`libsqlite3-sys 0.38` 使用了未稳定的 `cfg_select!`，编译失败。已将 `rusqlite` 固定为 `0.37`（拉取 `libsqlite3-sys 0.35`）规避。升级工具链到 ≥1.94 后可放开。
+- **Excel 落盘**：`export_excel` 写入系统下载目录（取不到则回退文档目录），返回完整路径，前端以提示展示，无需对话框插件。
+- **PDF**：前端 `ReportView` + `ReportModal`，「打印 / 导出 PDF」走 `window.print()`，打印 CSS 用 visibility 隔离 `.report-root`，仅输出报告本体（隐藏 Modal 外框与遮罩）。
+- **命令入参**：`save_record` 用 `SaveArgs` 结构体包裹 `input/result/created_at`，避免 JS↔Rust 多词参数名映射歧义。
+- **f64 存储**：完整结果以 JSON 落库；serde_json 解析可能有 ~1e-14 的末位 ULP 偏差，对指数无实际影响，测试以容差比较。
+
+## 10. 实施顺序
+
+1. `src-tauri`：加 `rusqlite`，`setup` 建表 + 连接 State。
+2. 实现 save/list/get/delete 命令 + Rust 往返测试。
+3. 前端历史列表 + 过滤 + 保存按钮。
+4. 报告视图组件（屏幕预览）→ 接 `window.print()` 出 PDF。
+5. `rust_xlsxwriter` 导出命令 + 保存对话框。
+6. 端到端：算→存→列表过滤→查看→导出。
diff --git a/docs/建材放射性检测结果分析软件开发计算逻辑(1).pdf b/docs/建材放射性检测结果分析软件开发计算逻辑(1).pdf
new file mode 100644
index 0000000..283e2cd
Binary files /dev/null and b/docs/建材放射性检测结果分析软件开发计算逻辑(1).pdf differ
diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index 55fe52e..7a3d147 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -288,9 +288,13 @@ name = "ceramic-radioactivity-tauri"
 version = "0.1.0"
 dependencies = [
  "ceramic-radioactivity",
+ "rusqlite",
+ "rust_xlsxwriter",
  "serde",
+ "serde_json",
  "tauri",
  "tauri-build",
+ "tauri-plugin-dialog",
 ]
 
 [[package]]
@@ -736,6 +740,18 @@ dependencies = [
  "typeid",
 ]
 
+[[package]]
+name = "fallible-iterator"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2acce4a10f12dc2fb14a218589d4f1f62ef011b2d0cc4b3cb1bba8e94da14649"
+
+[[package]]
+name = "fallible-streaming-iterator"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7360491ce676a36bf9bb3c56c1aa791658183a54d2744120f27285738d90465a"
+
 [[package]]
 name = "fastrand"
 version = "2.4.1"
@@ -775,6 +791,7 @@ checksum = "843fba2746e448b37e26a819579957415c8cef339bf08564fe8b7ddbd959573c"
 dependencies = [
  "crc32fast",
  "miniz_oxide",
+ "zlib-rs",
 ]
 
 [[package]]
@@ -1216,6 +1233,15 @@ version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ed5909b6e89a2db4456e54cd5f673791d7eca6732202bbf2a9cc504fe2f9b84a"
 
+[[package]]
+name = "hashlink"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7382cf6263419f2d8df38c55d7da83da5c18aef87fc7a7fc1fb1e344edfe14c1"
+dependencies = [
+ "hashbrown 0.15.5",
+]
+
 [[package]]
 name = "heck"
 version = "0.4.1"
@@ -1695,6 +1721,17 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "libsqlite3-sys"
+version = "0.35.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "133c182a6a2c87864fe97778797e46c7e999672690dc9fa3ee8e241aa4a9c13f"
+dependencies = [
+ "cc",
+ "pkg-config",
+ "vcpkg",
+]
+
 [[package]]
 name = "litemap"
 version = "0.8.2"
@@ -1980,6 +2017,7 @@ checksum = "e3e0adef53c21f888deb4fa59fc59f7eb17404926ee8a6f59f5df0fd7f9f3272"
 dependencies = [
  "bitflags 2.11.1",
  "block2",
+ "libc",
  "objc2",
  "objc2-core-foundation",
 ]
@@ -2454,6 +2492,53 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "rfd"
+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a15ad77d9e70a92437d8f74c35d99b4e4691128df018833e99f90bcd36152672"
+dependencies = [
+ "block2",
+ "dispatch2",
+ "glib-sys",
+ "gobject-sys",
+ "gtk-sys",
+ "js-sys",
+ "log",
+ "objc2",
+ "objc2-app-kit",
+ "objc2-core-foundation",
+ "objc2-foundation",
+ "raw-window-handle",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "windows-sys 0.60.2",
+]
+
+[[package]]
+name = "rusqlite"
+version = "0.37.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "165ca6e57b20e1351573e3729b958bc62f0e48025386970b6e4d29e7a7e71f3f"
+dependencies = [
+ "bitflags 2.11.1",
+ "fallible-iterator",
+ "fallible-streaming-iterator",
+ "hashlink",
+ "libsqlite3-sys",
+ "smallvec",
+]
+
+[[package]]
+name = "rust_xlsxwriter"
+version = "0.95.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f281b687352597d29efaad39701d1167d5c48aa76fb973e392bc13e9d44e7f36"
+dependencies = [
+ "zip",
+]
+
 [[package]]
 name = "rustc-hash"
 version = "2.1.2"
@@ -2625,9 +2710,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.149"
+version = "1.0.150"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "83fc039473c5595ace860d8c4fafa220ff474b3fc6bfdb4293327f1a37e94d86"
+checksum = "e8014e44b4736ed0538adeecded0fce2a272f22dc9578a7eb6b2d9993c74cfb9"
 dependencies = [
  "itoa",
  "memchr",
@@ -3098,6 +3183,64 @@ dependencies = [
  "tauri-utils",
 ]
 
+[[package]]
+name = "tauri-plugin"
+version = "2.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eefb2c18e8a605c23edb48fc56bb77381199e1a1e7f6ff0c9b970afe7b3cb8ee"
+dependencies = [
+ "anyhow",
+ "glob",
+ "plist",
+ "schemars 0.8.22",
+ "serde",
+ "serde_json",
+ "tauri-utils",
+ "walkdir",
+]
+
+[[package]]
+name = "tauri-plugin-dialog"
+version = "2.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "65981abb771e74e571a38196c3baa11c459379164791eba0e67abc1a5fac9884"
+dependencies = [
+ "log",
+ "raw-window-handle",
+ "rfd",
+ "serde",
+ "serde_json",
+ "tauri",
+ "tauri-plugin",
+ "tauri-plugin-fs",
+ "thiserror 2.0.18",
+ "url",
+]
+
+[[package]]
+name = "tauri-plugin-fs"
+version = "2.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7ecc274121aca0c036a2b42d1cbe83d368d348f54e0bb8a735c2b1548e8f371"
+dependencies = [
+ "anyhow",
+ "dunce",
+ "glob",
+ "log",
+ "objc2-foundation",
+ "percent-encoding",
+ "schemars 0.8.22",
+ "serde",
+ "serde_json",
+ "serde_repr",
+ "tauri",
+ "tauri-plugin",
+ "tauri-utils",
+ "thiserror 2.0.18",
+ "toml 1.1.2+spec-1.1.0",
+ "url",
+]
+
 [[package]]
 name = "tauri-runtime"
 version = "2.11.1"
@@ -3543,6 +3686,12 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
+[[package]]
+name = "typed-path"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e28f89b80c87b8fb0cf04ab448d5dd0dd0ade2f8891bae878de66a75a28600e"
+
 [[package]]
 name = "typeid"
 version = "1.0.3"
@@ -3663,6 +3812,12 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "vcpkg"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
+
 [[package]]
 name = "version-compare"
 version = "0.2.1"
@@ -4145,6 +4300,15 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.60.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2f500e4d28234f72040990ec9d39e3a6b950f9f22d3dba18416c35882612bcb"
+dependencies = [
+ "windows-targets 0.53.5",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.61.2"
@@ -4178,13 +4342,30 @@ dependencies = [
  "windows_aarch64_gnullvm 0.52.6",
  "windows_aarch64_msvc 0.52.6",
  "windows_i686_gnu 0.52.6",
- "windows_i686_gnullvm",
+ "windows_i686_gnullvm 0.52.6",
  "windows_i686_msvc 0.52.6",
  "windows_x86_64_gnu 0.52.6",
  "windows_x86_64_gnullvm 0.52.6",
  "windows_x86_64_msvc 0.52.6",
 ]
 
+[[package]]
+name = "windows-targets"
+version = "0.53.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4945f9f551b88e0d65f3db0bc25c33b8acea4d9e41163edf90dcd0b19f9069f3"
+dependencies = [
+ "windows-link 0.2.1",
+ "windows_aarch64_gnullvm 0.53.1",
+ "windows_aarch64_msvc 0.53.1",
+ "windows_i686_gnu 0.53.1",
+ "windows_i686_gnullvm 0.53.1",
+ "windows_i686_msvc 0.53.1",
+ "windows_x86_64_gnu 0.53.1",
+ "windows_x86_64_gnullvm 0.53.1",
+ "windows_x86_64_msvc 0.53.1",
+]
+
 [[package]]
 name = "windows-threading"
 version = "0.1.0"
@@ -4215,6 +4396,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9d8416fa8b42f5c947f8482c43e7d89e73a173cead56d044f6a56104a6d1b53"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.42.2"
@@ -4227,6 +4414,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9d782e804c2f632e395708e99a94275910eb9100b2114651e04744e9b125006"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.42.2"
@@ -4239,12 +4432,24 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "960e6da069d81e09becb0ca57a65220ddff016ff2d6af6a223cf372a506593a3"
+
 [[package]]
 name = "windows_i686_gnullvm"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
 
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa7359d10048f68ab8b09fa71c3daccfb0e9b559aed648a8f95469c27057180c"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.42.2"
@@ -4257,6 +4462,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e7ac75179f18232fe9c285163565a57ef8d3c89254a30685b57d83a38d326c2"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.42.2"
@@ -4269,6 +4480,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c3842cdd74a865a8066ab39c8a7a473c0778a3f29370b5fd6b4b9aa7df4a499"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.42.2"
@@ -4281,6 +4498,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ffa179e2d07eee8ad8f57493436566c7cc30ac536a3379fdf008f47f6bb7ae1"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.42.2"
@@ -4293,6 +4516,12 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d6bbff5f0aada427a1e5a6da5f1f98158182f26556f345ac9e04d36d0ebed650"
+
 [[package]]
 name = "winnow"
 version = "0.5.40"
@@ -4569,8 +4798,40 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "zip"
+version = "7.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c42e33efc22a0650c311c2ef19115ce232583abbe80850bc8b66509ebef02de0"
+dependencies = [
+ "crc32fast",
+ "flate2",
+ "indexmap 2.14.0",
+ "memchr",
+ "typed-path",
+ "zopfli",
+]
+
+[[package]]
+name = "zlib-rs"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3be3d40e40a133f9c916ee3f9f4fa2d9d63435b5fbe1bfc6d9dae0aa0ada1513"
+
 [[package]]
 name = "zmij"
 version = "1.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
+
+[[package]]
+name = "zopfli"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f05cd8797d63865425ff89b5c4a48804f35ba0ce8d125800027ad6017d2b5249"
+dependencies = [
+ "bumpalo",
+ "crc32fast",
+ "log",
+ "simd-adler32",
+]
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 623fcb4..41abf88 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -8,5 +8,9 @@ tauri-build = { version = "2", features = [] }
 
 [dependencies]
 ceramic-radioactivity = { path = ".." }
+rusqlite = { version = "0.37", features = ["bundled"] }
+rust_xlsxwriter = "0.95.0"
 serde = { version = "1", features = ["derive"] }
+serde_json = "1.0.150"
 tauri = { version = "2", features = [] }
+tauri-plugin-dialog = "2.7.1"
diff --git a/src-tauri/src/db.rs b/src-tauri/src/db.rs
new file mode 100644
index 0000000..a591d21
--- /dev/null
+++ b/src-tauri/src/db.rs
@@ -0,0 +1,361 @@
+//! 历史记录的 SQLite 存储。完整 input/result 以 JSON 落库，另冗余若干标量列供列表查询与过滤。
+
+use std::sync::Mutex;
+
+use ceramic_radioactivity::{CalculationResult, MaterialType, SampleInput, Validity, Verdict};
+use rusqlite::{Connection, ToSql};
+use serde::{Deserialize, Serialize};
+
+/// 由 Tauri 托管的数据库连接。
+pub struct Db(pub Mutex<Connection>);
+
+const CREATE_SQL: &str = "
+CREATE TABLE IF NOT EXISTS records (
+    id            INTEGER PRIMARY KEY AUTOINCREMENT,
+    sample_id     TEXT,
+    material_type TEXT NOT NULL,
+    calc_date     TEXT,
+    created_at    TEXT NOT NULL,
+    ira_value     REAL NOT NULL,
+    ir_value      REAL NOT NULL,
+    validity      TEXT NOT NULL,
+    verdict_kind  TEXT NOT NULL,
+    verdict_json  TEXT NOT NULL,
+    input_json    TEXT NOT NULL,
+    result_json   TEXT NOT NULL
+);
+CREATE INDEX IF NOT EXISTS idx_records_created ON records(created_at);
+CREATE INDEX IF NOT EXISTS idx_records_sample ON records(sample_id);
+";
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct RecordFilter {
+    pub sample_id: Option<String>,
+    pub material_type: Option<MaterialType>,
+    pub date_from: Option<String>,
+    pub date_to: Option<String>,
+    pub verdict_kind: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize)]
+pub struct RecordSummary {
+    pub id: i64,
+    pub sample_id: Option<String>,
+    pub material_type: MaterialType,
+    pub calc_date: Option<String>,
+    pub created_at: String,
+    pub ira_value: f64,
+    pub ir_value: f64,
+    pub validity: Validity,
+    pub verdict: Verdict,
+}
+
+#[derive(Debug, Clone, Serialize)]
+pub struct RecordDetail {
+    pub summary: RecordSummary,
+    pub input: SampleInput,
+    pub result: CalculationResult,
+}
+
+/// 建表（幂等）。
+pub fn init(conn: &Connection) -> Result<(), String> {
+    conn.execute_batch(CREATE_SQL).map_err(|e| e.to_string())
+}
+
+/// 稳定的判定大类，用于列表过滤（装饰材料的 A/B/C 归为 DecorativeClass）。
+pub fn verdict_kind(verdict: &Verdict) -> &'static str {
+    match verdict {
+        Verdict::Qualified => "Qualified",
+        Verdict::Unqualified => "Unqualified",
+        Verdict::NeedMoreMeasurements => "NeedMoreMeasurements",
+        Verdict::InvalidResult => "InvalidResult",
+        Verdict::DecorativeClass(_) => "DecorativeClass",
+    }
+}
+
+pub fn save(
+    conn: &Connection,
+    input: &SampleInput,
+    result: &CalculationResult,
+    created_at: &str,
+) -> Result<i64, String> {
+    let material_type = to_json(&input.material_type)?;
+    let validity = to_json(&result.analysis.validity)?;
+    let verdict_json = to_json(&result.analysis.verdict)?;
+    let input_json = to_json(input)?;
+    let result_json = to_json(result)?;
+
+    conn.execute(
+        "INSERT INTO records (
+            sample_id, material_type, calc_date, created_at,
+            ira_value, ir_value, validity, verdict_kind, verdict_json,
+            input_json, result_json
+        ) VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9, ?10, ?11)",
+        rusqlite::params![
+            input.sample_id,
+            material_type,
+            input.calculation_date,
+            created_at,
+            result.ira.value,
+            result.ir.value,
+            validity,
+            verdict_kind(&result.analysis.verdict),
+            verdict_json,
+            input_json,
+            result_json,
+        ],
+    )
+    .map_err(|e| e.to_string())?;
+
+    Ok(conn.last_insert_rowid())
+}
+
+/// 列表查询行（标量 + 用于反序列化的 JSON 文本）。
+struct RawSummary {
+    id: i64,
+    sample_id: Option<String>,
+    material_type: String,
+    calc_date: Option<String>,
+    created_at: String,
+    ira_value: f64,
+    ir_value: f64,
+    validity: String,
+    verdict_json: String,
+}
+
+pub fn list(conn: &Connection, filter: &RecordFilter) -> Result<Vec<RecordSummary>, String> {
+    let mut sql = String::from(
+        "SELECT id, sample_id, material_type, calc_date, created_at,
+                ira_value, ir_value, validity, verdict_json
+         FROM records WHERE 1 = 1",
+    );
+    let mut args: Vec<Box<dyn ToSql>> = Vec::new();
+
+    if let Some(sample_id) = filter.sample_id.as_ref().filter(|s| !s.is_empty()) {
+        sql.push_str(" AND sample_id LIKE ?");
+        args.push(Box::new(format!("%{sample_id}%")));
+    }
+    if let Some(material_type) = &filter.material_type {
+        sql.push_str(" AND material_type = ?");
+        args.push(Box::new(to_json(material_type)?));
+    }
+    if let Some(date_from) = filter.date_from.as_ref().filter(|s| !s.is_empty()) {
+        sql.push_str(" AND calc_date >= ?");
+        args.push(Box::new(date_from.clone()));
+    }
+    if let Some(date_to) = filter.date_to.as_ref().filter(|s| !s.is_empty()) {
+        sql.push_str(" AND calc_date <= ?");
+        args.push(Box::new(date_to.clone()));
+    }
+    if let Some(kind) = filter.verdict_kind.as_ref().filter(|s| !s.is_empty()) {
+        sql.push_str(" AND verdict_kind = ?");
+        args.push(Box::new(kind.clone()));
+    }
+    sql.push_str(" ORDER BY created_at DESC, id DESC");
+
+    let mut stmt = conn.prepare(&sql).map_err(|e| e.to_string())?;
+    let params: Vec<&dyn ToSql> = args.iter().map(|b| b.as_ref()).collect();
+    let raw_rows = stmt
+        .query_map(params.as_slice(), |row| {
+            Ok(RawSummary {
+                id: row.get(0)?,
+                sample_id: row.get(1)?,
+                material_type: row.get(2)?,
+                calc_date: row.get(3)?,
+                created_at: row.get(4)?,
+                ira_value: row.get(5)?,
+                ir_value: row.get(6)?,
+                validity: row.get(7)?,
+                verdict_json: row.get(8)?,
+            })
+        })
+        .map_err(|e| e.to_string())?;
+
+    let mut summaries = Vec::new();
+    for raw in raw_rows {
+        let raw = raw.map_err(|e| e.to_string())?;
+        summaries.push(raw_to_summary(raw)?);
+    }
+    Ok(summaries)
+}
+
+pub fn get(conn: &Connection, id: i64) -> Result<RecordDetail, String> {
+    conn.query_row(
+        "SELECT id, sample_id, material_type, calc_date, created_at,
+                ira_value, ir_value, validity, verdict_json, input_json, result_json
+         FROM records WHERE id = ?1",
+        [id],
+        |row| {
+            Ok((
+                RawSummary {
+                    id: row.get(0)?,
+                    sample_id: row.get(1)?,
+                    material_type: row.get(2)?,
+                    calc_date: row.get(3)?,
+                    created_at: row.get(4)?,
+                    ira_value: row.get(5)?,
+                    ir_value: row.get(6)?,
+                    validity: row.get(7)?,
+                    verdict_json: row.get(8)?,
+                },
+                row.get::<_, String>(9)?,
+                row.get::<_, String>(10)?,
+            ))
+        },
+    )
+    .map_err(|e| e.to_string())
+    .and_then(|(raw, input_json, result_json)| {
+        Ok(RecordDetail {
+            summary: raw_to_summary(raw)?,
+            input: from_json(&input_json)?,
+            result: from_json(&result_json)?,
+        })
+    })
+}
+
+pub fn delete(conn: &Connection, id: i64) -> Result<(), String> {
+    conn.execute("DELETE FROM records WHERE id = ?1", [id])
+        .map_err(|e| e.to_string())?;
+    Ok(())
+}
+
+fn raw_to_summary(raw: RawSummary) -> Result<RecordSummary, String> {
+    Ok(RecordSummary {
+        id: raw.id,
+        sample_id: raw.sample_id,
+        material_type: from_json(&raw.material_type)?,
+        calc_date: raw.calc_date,
+        created_at: raw.created_at,
+        ira_value: raw.ira_value,
+        ir_value: raw.ir_value,
+        validity: from_json(&raw.validity)?,
+        verdict: from_json(&raw.verdict_json)?,
+    })
+}
+
+fn to_json<T: Serialize>(value: &T) -> Result<String, String> {
+    serde_json::to_string(value).map_err(|e| e.to_string())
+}
+
+fn from_json<T: for<'de> Deserialize<'de>>(text: &str) -> Result<T, String> {
+    serde_json::from_str(text).map_err(|e| e.to_string())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use ceramic_radioactivity::{calculate_sample, CalibrationParams, NuclideMeasurements};
+
+    fn cal(factor: f64, u: f64) -> CalibrationParams {
+        CalibrationParams {
+            factor,
+            expanded_uncertainty_percent: u,
+            coverage_factor: 2.0,
+        }
+    }
+
+    fn sample() -> (SampleInput, CalculationResult) {
+        let input = SampleInput {
+            ra: NuclideMeasurements {
+                measured_values: vec![100.0],
+                calibration: cal(0.916, 6.3),
+            },
+            th: NuclideMeasurements {
+                measured_values: vec![110.0],
+                calibration: cal(0.884, 6.9),
+            },
+            k: NuclideMeasurements {
+                measured_values: vec![560.0],
+                calibration: cal(0.961, 6.7),
+            },
+            material_type: MaterialType::BuildingMainBody,
+            sample_id: Some("S-1".into()),
+            calculation_date: Some("2026-06-11".into()),
+        };
+        let result = calculate_sample(input.clone()).unwrap();
+        (input, result)
+    }
+
+    fn empty_filter() -> RecordFilter {
+        RecordFilter {
+            sample_id: None,
+            material_type: None,
+            date_from: None,
+            date_to: None,
+            verdict_kind: None,
+        }
+    }
+
+    #[test]
+    fn save_list_get_delete_roundtrip() {
+        let conn = Connection::open_in_memory().unwrap();
+        init(&conn).unwrap();
+        let (input, result) = sample();
+
+        let id = save(&conn, &input, &result, "2026-06-11T10:00:00Z").unwrap();
+        assert!(id > 0);
+
+        let all = list(&conn, &empty_filter()).unwrap();
+        assert_eq!(all.len(), 1);
+        assert_eq!(all[0].sample_id.as_deref(), Some("S-1"));
+        assert_eq!(all[0].verdict, result.analysis.verdict);
+        assert_eq!(all[0].material_type, MaterialType::BuildingMainBody);
+
+        let detail = get(&conn, id).unwrap();
+        // 离散字段精确比较；数值字段用容差（serde_json 的 f64 解析可能有末位 ULP 偏差，~1e-14，可忽略）。
+        assert_eq!(detail.input.sample_id, input.sample_id);
+        assert_eq!(detail.input.material_type, input.material_type);
+        assert_eq!(detail.input.ra.measured_values, input.ra.measured_values);
+        assert_eq!(detail.result.measurement_count, result.measurement_count);
+        assert_eq!(detail.result.analysis.validity, result.analysis.validity);
+        assert_eq!(detail.result.analysis.verdict, result.analysis.verdict);
+        assert!((detail.result.ira.value - result.ira.value).abs() < 1e-9);
+        assert!((detail.result.ir.value - result.ir.value).abs() < 1e-9);
+        assert!(
+            (detail.result.mcm.overall_fail_probability - result.mcm.overall_fail_probability).abs()
+                < 1e-9
+        );
+
+        delete(&conn, id).unwrap();
+        assert!(list(&conn, &empty_filter()).unwrap().is_empty());
+    }
+
+    #[test]
+    fn filters_narrow_results() {
+        let conn = Connection::open_in_memory().unwrap();
+        init(&conn).unwrap();
+        let (input, result) = sample();
+        save(&conn, &input, &result, "2026-06-11T10:00:00Z").unwrap();
+
+        let hit = list(
+            &conn,
+            &RecordFilter {
+                verdict_kind: Some("Qualified".into()),
+                sample_id: Some("S".into()),
+                ..empty_filter()
+            },
+        )
+        .unwrap();
+        assert_eq!(hit.len(), 1);
+
+        let miss = list(
+            &conn,
+            &RecordFilter {
+                verdict_kind: Some("Unqualified".into()),
+                ..empty_filter()
+            },
+        )
+        .unwrap();
+        assert!(miss.is_empty());
+
+        let wrong_date = list(
+            &conn,
+            &RecordFilter {
+                date_from: Some("2026-07-01".into()),
+                ..empty_filter()
+            },
+        )
+        .unwrap();
+        assert!(wrong_date.is_empty());
+    }
+}
diff --git a/src-tauri/src/excel.rs b/src-tauri/src/excel.rs
new file mode 100644
index 0000000..eb102cd
--- /dev/null
+++ b/src-tauri/src/excel.rs
@@ -0,0 +1,217 @@
+//! 将一条历史记录导出为 .xlsx。rust_xlsxwriter 原生 UTF-8，无需处理中文字体。
+
+use std::path::Path;
+
+use ceramic_radioactivity::{MaterialType, NuclideResult, Validity, Verdict};
+use rust_xlsxwriter::{Format, Workbook};
+
+use crate::db::RecordDetail;
+
+/// 「另存为」对话框的默认文件名。
+pub fn default_file_name(detail: &RecordDetail) -> String {
+    let sample = detail
+        .summary
+        .sample_id
+        .as_deref()
+        .filter(|s| !s.is_empty())
+        .unwrap_or("未编号");
+    let safe: String = sample
+        .chars()
+        .map(|c| if r#"\/:*?"<>|"#.contains(c) { '_' } else { c })
+        .collect();
+    format!("建材放射性检测_{safe}_{}.xlsx", detail.summary.id)
+}
+
+/// 将 xlsx 写到用户选定的路径，返回完整路径。
+pub fn write_to_path(path: &Path, detail: &RecordDetail) -> Result<String, String> {
+    let mut workbook = Workbook::new();
+    let bold = Format::new().set_bold();
+
+    write_summary(&mut workbook, detail, &bold)?;
+    write_measurements(&mut workbook, detail, &bold)?;
+    write_results(&mut workbook, detail, &bold)?;
+
+    if let Some(parent) = path.parent() {
+        std::fs::create_dir_all(parent).map_err(|e| e.to_string())?;
+    }
+    workbook
+        .save(path)
+        .map_err(|e| e.to_string())
+        .map(|_| path.to_string_lossy().into_owned())
+}
+
+fn write_summary(
+    workbook: &mut Workbook,
+    detail: &RecordDetail,
+    bold: &Format,
+) -> Result<(), String> {
+    let sheet = workbook.add_worksheet();
+    sheet.set_name("概要").map_err(|e| e.to_string())?;
+    let s = &detail.summary;
+    let rows: [(&str, String); 7] = [
+        ("样品编号", s.sample_id.clone().unwrap_or_else(|| "未编号".into())),
+        ("计算日期", s.calc_date.clone().unwrap_or_default()),
+        ("入库时间", s.created_at.clone()),
+        ("材料类型", material_text(&s.material_type).into()),
+        ("测量次数", detail.result.measurement_count.to_string()),
+        ("有效性", validity_text(&s.validity).into()),
+        ("最终判定", verdict_text(&s.verdict)),
+    ];
+    for (i, (label, value)) in rows.iter().enumerate() {
+        let row = i as u32;
+        sheet.write_with_format(row, 0, *label, bold).map_err(|e| e.to_string())?;
+        sheet.write(row, 1, value.as_str()).map_err(|e| e.to_string())?;
+    }
+    sheet.set_column_width(0, 14).ok();
+    sheet.set_column_width(1, 28).ok();
+    Ok(())
+}
+
+fn write_measurements(
+    workbook: &mut Workbook,
+    detail: &RecordDetail,
+    bold: &Format,
+) -> Result<(), String> {
+    let sheet = workbook.add_worksheet();
+    sheet.set_name("测量与校准").map_err(|e| e.to_string())?;
+    let input = &detail.input;
+
+    for (col, header) in ["序号", "Ra-226", "Th-232", "K-40"].iter().enumerate() {
+        sheet.write_with_format(0, col as u16, *header, bold).map_err(|e| e.to_string())?;
+    }
+    let n = input.ra.measured_values.len();
+    for i in 0..n {
+        let row = (i + 1) as u32;
+        sheet.write(row, 0, (i + 1) as f64).map_err(|e| e.to_string())?;
+        sheet.write(row, 1, input.ra.measured_values[i]).map_err(|e| e.to_string())?;
+        sheet.write(row, 2, input.th.measured_values[i]).map_err(|e| e.to_string())?;
+        sheet.write(row, 3, input.k.measured_values[i]).map_err(|e| e.to_string())?;
+    }
+
+    let base = (n + 2) as u32;
+    sheet.write_with_format(base, 0, "校准参数", bold).map_err(|e| e.to_string())?;
+    for (col, header) in ["核素", "校准系数 a", "U(%)", "k"].iter().enumerate() {
+        sheet.write_with_format(base + 1, col as u16, *header, bold).map_err(|e| e.to_string())?;
+    }
+    let cals = [
+        ("Ra", input.ra.calibration),
+        ("Th", input.th.calibration),
+        ("K", input.k.calibration),
+    ];
+    for (i, (name, cal)) in cals.iter().enumerate() {
+        let row = base + 2 + i as u32;
+        sheet.write(row, 0, *name).map_err(|e| e.to_string())?;
+        sheet.write(row, 1, cal.factor).map_err(|e| e.to_string())?;
+        sheet.write(row, 2, cal.expanded_uncertainty_percent).map_err(|e| e.to_string())?;
+        sheet.write(row, 3, cal.coverage_factor).map_err(|e| e.to_string())?;
+    }
+    sheet.set_column_width(0, 10).ok();
+    Ok(())
+}
+
+fn write_results(
+    workbook: &mut Workbook,
+    detail: &RecordDetail,
+    bold: &Format,
+) -> Result<(), String> {
+    let sheet = workbook.add_worksheet();
+    sheet.set_name("结果与MCM").map_err(|e| e.to_string())?;
+    let r = &detail.result;
+
+    // 指数结果。
+    for (col, header) in ["指数", "值", "U(k=2)", "相对(k=2)%", "P2.5", "P97.5"]
+        .iter()
+        .enumerate()
+    {
+        sheet.write_with_format(0, col as u16, *header, bold).map_err(|e| e.to_string())?;
+    }
+    let indices = [("IRa", &r.ira), ("Ir", &r.ir)];
+    for (i, (name, idx)) in indices.iter().enumerate() {
+        let row = (i + 1) as u32;
+        sheet.write(row, 0, *name).map_err(|e| e.to_string())?;
+        sheet.write(row, 1, idx.value).map_err(|e| e.to_string())?;
+        sheet.write(row, 2, idx.expanded_uncertainty).map_err(|e| e.to_string())?;
+        sheet.write(row, 3, idx.relative_expanded_uncertainty_percent).map_err(|e| e.to_string())?;
+        sheet.write(row, 4, idx.p2_5).map_err(|e| e.to_string())?;
+        sheet.write(row, 5, idx.p97_5).map_err(|e| e.to_string())?;
+    }
+
+    // 核素中间量。
+    let base = 4u32;
+    for (col, header) in ["核素", "均值", "校准活度", "A类", "B类相对", "合成不确定度"]
+        .iter()
+        .enumerate()
+    {
+        sheet.write_with_format(base, col as u16, *header, bold).map_err(|e| e.to_string())?;
+    }
+    let nuclides: [(&str, &NuclideResult); 3] =
+        [("Ra-226", &r.ra), ("Th-232", &r.th), ("K-40", &r.k)];
+    for (i, (name, nr)) in nuclides.iter().enumerate() {
+        let row = base + 1 + i as u32;
+        sheet.write(row, 0, *name).map_err(|e| e.to_string())?;
+        sheet.write(row, 1, nr.mean_measured).map_err(|e| e.to_string())?;
+        sheet.write(row, 2, nr.mean_calibrated).map_err(|e| e.to_string())?;
+        sheet.write(row, 3, nr.type_a_uncertainty).map_err(|e| e.to_string())?;
+        sheet.write(row, 4, nr.type_b_relative).map_err(|e| e.to_string())?;
+        sheet.write(row, 5, nr.combined_uncertainty).map_err(|e| e.to_string())?;
+    }
+
+    // MCM。
+    let mbase = base + 5;
+    sheet.write_with_format(mbase, 0, format!("蒙特卡洛仿真（{} 次）", r.mcm.iterations), bold)
+        .map_err(|e| e.to_string())?;
+    for (col, header) in ["指数", "平均值", "标准偏差", "P2.5", "P97.5", "标准值", "合格概率"]
+        .iter()
+        .enumerate()
+    {
+        sheet.write_with_format(mbase + 1, col as u16, *header, bold).map_err(|e| e.to_string())?;
+    }
+    let mcm = [("IRa", &r.mcm.ira), ("Ir", &r.mcm.ir)];
+    for (i, (name, stats)) in mcm.iter().enumerate() {
+        let row = mbase + 2 + i as u32;
+        sheet.write(row, 0, *name).map_err(|e| e.to_string())?;
+        sheet.write(row, 1, stats.mean).map_err(|e| e.to_string())?;
+        sheet.write(row, 2, stats.std_dev).map_err(|e| e.to_string())?;
+        sheet.write(row, 3, stats.p2_5).map_err(|e| e.to_string())?;
+        sheet.write(row, 4, stats.p97_5).map_err(|e| e.to_string())?;
+        sheet.write(row, 5, stats.standard_value).map_err(|e| e.to_string())?;
+        sheet.write(row, 6, stats.pass_probability).map_err(|e| e.to_string())?;
+    }
+    let frow = mbase + 4;
+    sheet.write_with_format(frow, 0, "综合不符合概率", bold).map_err(|e| e.to_string())?;
+    sheet.write(frow, 1, r.mcm.overall_fail_probability).map_err(|e| e.to_string())?;
+
+    sheet.set_column_width(0, 12).ok();
+    Ok(())
+}
+
+fn material_text(material: &MaterialType) -> &'static str {
+    match material {
+        MaterialType::BuildingMainBody => "建筑主体材料",
+        MaterialType::HollowBuildingMainBody => "空心率>25% 主体材料",
+        MaterialType::DecorativeMaterial => "装饰装修材料",
+    }
+}
+
+fn validity_text(validity: &Validity) -> &'static str {
+    match validity {
+        Validity::LowActivityExempt => "有效（低活度豁免 ≤37 Bq/kg）",
+        Validity::UncertaintyAcceptable => "有效（Ur(IRa) ≤ 20%）",
+        Validity::Invalid => "无效（Ur(IRa) > 20%）",
+    }
+}
+
+fn verdict_text(verdict: &Verdict) -> String {
+    match verdict {
+        Verdict::Qualified => "合格".into(),
+        Verdict::Unqualified => "不合格".into(),
+        Verdict::NeedMoreMeasurements => "建议增加至 6 次测量".into(),
+        Verdict::InvalidResult => "结果无效".into(),
+        Verdict::DecorativeClass(class) => match class {
+            ceramic_radioactivity::DecorClass::A => "装饰装修 A 类".into(),
+            ceramic_radioactivity::DecorClass::B => "装饰装修 B 类".into(),
+            ceramic_radioactivity::DecorClass::C => "装饰装修 C 类".into(),
+            ceramic_radioactivity::DecorClass::Unqualified => "不合格（不可用于建材）".into(),
+        },
+    }
+}
diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index aa15110..47e42aa 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -1,15 +1,102 @@
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
 
+mod db;
+mod excel;
+
+use std::sync::Mutex;
+
 use ceramic_radioactivity::{calculate_sample, CalculationResult, SampleInput};
+use db::{Db, RecordDetail, RecordFilter, RecordSummary};
+use rusqlite::Connection;
+use tauri::{Manager, State};
+use tauri_plugin_dialog::DialogExt;
 
 #[tauri::command]
 fn calculate(input: SampleInput) -> Result<CalculationResult, String> {
     calculate_sample(input).map_err(|error| error.to_string())
 }
 
+#[derive(serde::Deserialize)]
+struct SaveArgs {
+    input: SampleInput,
+    result: CalculationResult,
+    created_at: String,
+}
+
+#[tauri::command]
+fn save_record(db: State<Db>, args: SaveArgs) -> Result<i64, String> {
+    let conn = db.0.lock().map_err(|e| e.to_string())?;
+    db::save(&conn, &args.input, &args.result, &args.created_at)
+}
+
+#[tauri::command]
+fn list_records(db: State<Db>, filter: RecordFilter) -> Result<Vec<RecordSummary>, String> {
+    let conn = db.0.lock().map_err(|e| e.to_string())?;
+    db::list(&conn, &filter)
+}
+
+#[tauri::command]
+fn get_record(db: State<Db>, id: i64) -> Result<RecordDetail, String> {
+    let conn = db.0.lock().map_err(|e| e.to_string())?;
+    db::get(&conn, id)
+}
+
+#[tauri::command]
+fn delete_record(db: State<Db>, id: i64) -> Result<(), String> {
+    let conn = db.0.lock().map_err(|e| e.to_string())?;
+    db::delete(&conn, id)
+}
+
+/// 弹出「另存为」对话框，用户选定路径后写出 xlsx。取消则返回 `None`。
+#[tauri::command]
+fn export_excel(app: tauri::AppHandle, db: State<Db>, id: i64) -> Result<Option<String>, String> {
+    let detail = {
+        let conn = db.0.lock().map_err(|e| e.to_string())?;
+        db::get(&conn, id)?
+    };
+
+    let start_dir = app
+        .path()
+        .download_dir()
+        .or_else(|_| app.path().document_dir())
+        .ok();
+
+    let mut builder = app
+        .dialog()
+        .file()
+        .set_title("导出 Excel")
+        .set_file_name(excel::default_file_name(&detail))
+        .add_filter("Excel 工作簿", &["xlsx"]);
+    if let Some(dir) = start_dir {
+        builder = builder.set_directory(dir);
+    }
+
+    let Some(file_path) = builder.blocking_save_file() else {
+        return Ok(None); // 用户取消
+    };
+    let path = file_path.into_path().map_err(|e| e.to_string())?;
+    excel::write_to_path(&path, &detail).map(Some)
+}
+
 fn main() {
     tauri::Builder::default()
-        .invoke_handler(tauri::generate_handler![calculate])
+        .plugin(tauri_plugin_dialog::init())
+        .setup(|app| {
+            let dir = app.path().app_data_dir()?;
+            std::fs::create_dir_all(&dir)?;
+            let conn = Connection::open(dir.join("history.db"))?;
+            db::init(&conn).map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e))?;
+            app.manage(Db(Mutex::new(conn)));
+            Ok(())
+        })
+        .invoke_handler(tauri::generate_handler![
+            calculate,
+            save_record,
+            list_records,
+            get_record,
+            delete_record,
+            export_excel
+        ])
         .run(tauri::generate_context!())
         .expect("failed to run Tauri application");
 }
diff --git a/src/calculator.rs b/src/calculator.rs
index 85578ab..488747f 100644
--- a/src/calculator.rs
+++ b/src/calculator.rs
@@ -1,18 +1,23 @@
 use crate::domain::{
-    CalculationError, CalculationResult, Conclusion, IndexResult, NuclideMeasurements,
-    NuclideResult, SampleInput,
+    AnalysisResult, CalculationError, CalculationResult, Conclusion, DecorClass, IndexResult,
+    MaterialType, NuclideMeasurements, NuclideResult, SampleInput, Validity, Verdict,
 };
 use crate::mcm::run_monte_carlo;
 
+/// 相对（扩展）不确定度可接受上限，用于 3.1 有效性判定与 legacy conclusion。
 const ACCEPTANCE_LIMIT_PERCENT: f64 = 20.0;
+/// 3.1 低活度豁免阈值：总比活度 ≤ 37 Bq/kg 时结果直接有效。
+const TOTAL_ACTIVITY_EXEMPT: f64 = 37.0;
+/// 指数的包含因子 k（GUM 2.2.4 / 2.2.6）。
+const COVERAGE_FACTOR: f64 = 2.0;
 
 pub fn calculate_sample(input: SampleInput) -> Result<CalculationResult, CalculationError> {
     validate_input(&input)?;
 
     let n = input.ra.measured_values.len();
-    let ra = calculate_nuclide("Ra", &input.ra)?;
-    let th = calculate_nuclide("Th", &input.th)?;
-    let k = calculate_nuclide("K", &input.k)?;
+    let ra = calculate_nuclide(&input.ra)?;
+    let th = calculate_nuclide(&input.th)?;
+    let k = calculate_nuclide(&input.k)?;
 
     let ira = calculate_ira(&ra);
     let ir = calculate_ir(&ra, &th, &k);
@@ -26,7 +31,8 @@ pub fn calculate_sample(input: SampleInput) -> Result<CalculationResult, Calcula
         Conclusion::RecalibrateInstrument
     };
 
-    let mcm = run_monte_carlo(&ra, &th, &k, &input.limits);
+    let analysis = analyze(input.material_type, &ra, &th, &k, &ira, &ir);
+    let mcm = run_monte_carlo(&ra, &th, &k, &input.material_type.primary_limits());
 
     Ok(CalculationResult {
         measurement_count: n,
@@ -36,6 +42,7 @@ pub fn calculate_sample(input: SampleInput) -> Result<CalculationResult, Calcula
         ira,
         ir,
         conclusion,
+        analysis,
         mcm,
     })
 }
@@ -48,7 +55,7 @@ fn validate_input(input: &SampleInput) -> Result<(), CalculationError> {
     ];
 
     for (nuclide, count) in counts {
-        if count < 2 {
+        if count < 1 {
             return Err(CalculationError::TooFewMeasurements { nuclide, count });
         }
     }
@@ -90,27 +97,21 @@ fn validate_nuclide(
     Ok(())
 }
 
-fn calculate_nuclide(
-    nuclide: &'static str,
-    measurements: &NuclideMeasurements,
-) -> Result<NuclideResult, CalculationError> {
-    let n = measurements.measured_values.len();
+fn calculate_nuclide(measurements: &NuclideMeasurements) -> Result<NuclideResult, CalculationError> {
+    let factor = measurements.calibration.factor;
     let mean_measured = mean(&measurements.measured_values);
-    let mean_calibrated = mean_measured * measurements.calibration.factor;
+    let mean_calibrated = mean_measured * factor;
     let type_a_uncertainty = type_a_uncertainty(&measurements.measured_values)?;
-    let type_b_relative =
-        measurements.calibration.expanded_uncertainty_percent / 100.0 / measurements.calibration.coverage_factor;
-    let type_b_uncertainty = measurements.calibration.factor * type_b_relative;
+    let type_b_relative = measurements.calibration.expanded_uncertainty_percent
+        / 100.0
+        / measurements.calibration.coverage_factor;
+    let type_b_uncertainty = factor * type_b_relative;
     let sensitivity_coefficient = mean_measured;
-    let combined_uncertainty = (type_a_uncertainty.powi(2)
+    // 校准比活度 C = mean·a，对测量值 A 的灵敏系数为 a，故 A 类项为 a·uA。
+    let combined_uncertainty = ((factor * type_a_uncertainty).powi(2)
         + (sensitivity_coefficient * type_b_uncertainty).powi(2))
     .sqrt();
 
-    if n < 6 && range_coefficient(n).is_none() {
-        return Err(CalculationError::UnsupportedRangeMethodCount { count: n });
-    }
-
-    let _ = nuclide;
     Ok(NuclideResult {
         mean_measured,
         mean_calibrated,
@@ -125,11 +126,7 @@ fn calculate_nuclide(
 fn calculate_ira(ra: &NuclideResult) -> IndexResult {
     let value = ra.mean_calibrated / 200.0;
     let standard_uncertainty = ra.combined_uncertainty / 200.0;
-    IndexResult {
-        value,
-        standard_uncertainty,
-        relative_uncertainty_percent: relative_percent(standard_uncertainty, value),
-    }
+    make_index(value, standard_uncertainty)
 }
 
 fn calculate_ir(ra: &NuclideResult, th: &NuclideResult, k: &NuclideResult) -> IndexResult {
@@ -138,16 +135,134 @@ fn calculate_ir(ra: &NuclideResult, th: &NuclideResult, k: &NuclideResult) -> In
         + (th.combined_uncertainty / 260.0).powi(2)
         + (k.combined_uncertainty / 4200.0).powi(2))
     .sqrt();
+    make_index(value, standard_uncertainty)
+}
+
+/// 由指数值与标准不确定度构造完整的 `IndexResult`（含扩展不确定度与 GUM 真值区间）。
+fn make_index(value: f64, standard_uncertainty: f64) -> IndexResult {
+    let expanded_uncertainty = standard_uncertainty * COVERAGE_FACTOR;
     IndexResult {
         value,
         standard_uncertainty,
+        expanded_uncertainty,
         relative_uncertainty_percent: relative_percent(standard_uncertainty, value),
+        relative_expanded_uncertainty_percent: relative_percent(expanded_uncertainty, value),
+        p2_5: value - expanded_uncertainty,
+        p97_5: value + expanded_uncertainty,
     }
 }
 
+/// 3.1 有效性 + 3.2 临界值判定。
+fn analyze(
+    material: MaterialType,
+    ra: &NuclideResult,
+    th: &NuclideResult,
+    k: &NuclideResult,
+    ira: &IndexResult,
+    ir: &IndexResult,
+) -> AnalysisResult {
+    let total_calibrated_activity = ra.mean_calibrated + th.mean_calibrated + k.mean_calibrated;
+
+    // 3.1 有效性：低活度豁免，否则看 IRa 的相对扩展不确定度（k=2）。
+    let validity = if total_calibrated_activity <= TOTAL_ACTIVITY_EXEMPT {
+        Validity::LowActivityExempt
+    } else if ira.relative_expanded_uncertainty_percent <= ACCEPTANCE_LIMIT_PERCENT {
+        Validity::UncertaintyAcceptable
+    } else {
+        Validity::Invalid
+    };
+
+    // 3.2 临界值判定。
+    let verdict = if validity == Validity::Invalid {
+        Verdict::InvalidResult
+    } else {
+        match material {
+            MaterialType::DecorativeMaterial => judge_decorative(ira, ir),
+            single_tier => judge_single_tier(single_tier, ira, ir),
+        }
+    };
+
+    AnalysisResult {
+        total_calibrated_activity,
+        validity,
+        verdict,
+    }
+}
+
+/// 单个指数真值区间相对极限值的三态。
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+enum TierCheck {
+    /// 区间整体在限值之下：合格。
+    Pass,
+    /// 区间整体在限值之上：超标。
+    Fail,
+    /// 区间跨越限值：需增加测量次数。
+    Straddle,
+}
+
+/// 判断指数真值区间相对极限值的位置；`None` 表示该指数无约束。
+fn check_index(index: &IndexResult, limit: Option<f64>) -> TierCheck {
+    match limit {
+        None => TierCheck::Pass,
+        Some(limit) => {
+            if index.p97_5 < limit {
+                TierCheck::Pass
+            } else if index.p2_5 > limit {
+                TierCheck::Fail
+            } else {
+                TierCheck::Straddle
+            }
+        }
+    }
+}
+
+/// 合并同一级别多个指数的判定：超标优先，其次跨越，全部合格才合格。
+fn combine(checks: &[TierCheck]) -> TierCheck {
+    if checks.contains(&TierCheck::Fail) {
+        TierCheck::Fail
+    } else if checks.contains(&TierCheck::Straddle) {
+        TierCheck::Straddle
+    } else {
+        TierCheck::Pass
+    }
+}
+
+/// 主体/空心材料：单级判定。
+fn judge_single_tier(material: MaterialType, ira: &IndexResult, ir: &IndexResult) -> Verdict {
+    let tier = &material.tiers()[0];
+    match combine(&[
+        check_index(ira, tier.ira_limit),
+        check_index(ir, tier.ir_limit),
+    ]) {
+        TierCheck::Pass => Verdict::Qualified,
+        TierCheck::Straddle => Verdict::NeedMoreMeasurements,
+        TierCheck::Fail => Verdict::Unqualified,
+    }
+}
+
+/// 装饰装修材料：A→B→C 级联分类。
+fn judge_decorative(ira: &IndexResult, ir: &IndexResult) -> Verdict {
+    let tiers = MaterialType::DecorativeMaterial.tiers();
+    let classes = [DecorClass::A, DecorClass::B, DecorClass::C];
+    for (tier, class) in tiers.iter().zip(classes) {
+        match combine(&[
+            check_index(ira, tier.ira_limit),
+            check_index(ir, tier.ir_limit),
+        ]) {
+            TierCheck::Pass => return Verdict::DecorativeClass(class),
+            TierCheck::Straddle => return Verdict::NeedMoreMeasurements,
+            TierCheck::Fail => continue,
+        }
+    }
+    Verdict::DecorativeClass(DecorClass::Unqualified)
+}
+
 fn type_a_uncertainty(values: &[f64]) -> Result<f64, CalculationError> {
     let n = values.len();
-    if n >= 6 {
+    if n <= 1 {
+        // 单次测量：A 类不确定度为 0（PDF 2.2.1）。
+        Ok(0.0)
+    } else if n >= 6 {
         Ok(sample_standard_deviation(values) / (n as f64).sqrt())
     } else {
         let coefficient =
diff --git a/src/domain.rs b/src/domain.rs
index 368eb5c..2c50e28 100644
--- a/src/domain.rs
+++ b/src/domain.rs
@@ -8,12 +8,82 @@ pub struct SampleInput {
     pub ra: NuclideMeasurements,
     pub th: NuclideMeasurements,
     pub k: NuclideMeasurements,
-    /// 合格判定标准值（限值）。前端可省略，默认 IRa ≤ 1.0、Ir ≤ 1.0（GB 6566 主体材料）。
+    /// 样品材料类型，决定限值集（GB 6566）。默认建筑主体材料。
     #[serde(default)]
-    pub limits: AcceptanceLimits,
+    pub material_type: MaterialType,
+    /// 样品编号（输出元信息，6.1）。
+    #[serde(default)]
+    pub sample_id: Option<String>,
+    /// 计算日期（前端传入的 ISO 字符串，6.1）。
+    #[serde(default)]
+    pub calculation_date: Option<String>,
 }
 
-/// 内照射指数 IRa 与外照射指数 Ir 的合格判定标准值（限值）。
+/// 样品材料类型。每种类型对应一组（或多级）限值。
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default, Serialize, Deserialize)]
+pub enum MaterialType {
+    /// 建筑主体材料：IRa ≤ 1.0、Ir ≤ 1.0。
+    #[default]
+    BuildingMainBody,
+    /// 空心率大于 25% 的建筑主体材料：IRa ≤ 1.0、Ir ≤ 1.3。
+    HollowBuildingMainBody,
+    /// 装饰装修材料：按 A / B / C 三级分类。
+    DecorativeMaterial,
+}
+
+/// 一级限值（装饰材料的 C 类无 IRa 约束，故用 `Option`）。
+#[derive(Debug, Clone, Copy, PartialEq, Serialize, Deserialize)]
+pub struct LimitTier {
+    pub label: &'static str,
+    pub ira_limit: Option<f64>,
+    pub ir_limit: Option<f64>,
+}
+
+impl MaterialType {
+    /// 从严到宽的限值阶梯。主体/空心材料各 1 级；装饰材料 A/B/C 三级。
+    pub fn tiers(&self) -> &'static [LimitTier] {
+        match self {
+            MaterialType::BuildingMainBody => &[LimitTier {
+                label: "合格",
+                ira_limit: Some(1.0),
+                ir_limit: Some(1.0),
+            }],
+            MaterialType::HollowBuildingMainBody => &[LimitTier {
+                label: "合格",
+                ira_limit: Some(1.0),
+                ir_limit: Some(1.3),
+            }],
+            MaterialType::DecorativeMaterial => &[
+                LimitTier {
+                    label: "A",
+                    ira_limit: Some(1.0),
+                    ir_limit: Some(1.3),
+                },
+                LimitTier {
+                    label: "B",
+                    ira_limit: Some(1.3),
+                    ir_limit: Some(1.9),
+                },
+                LimitTier {
+                    label: "C",
+                    ira_limit: None,
+                    ir_limit: Some(2.8),
+                },
+            ],
+        }
+    }
+
+    /// MCM 比较所用的主限值（取最严一级，无约束项以 +∞ 表示）。
+    pub fn primary_limits(&self) -> AcceptanceLimits {
+        let tier = &self.tiers()[0];
+        AcceptanceLimits {
+            ira_limit: tier.ira_limit.unwrap_or(f64::INFINITY),
+            ir_limit: tier.ir_limit.unwrap_or(f64::INFINITY),
+        }
+    }
+}
+
+/// 内照射指数 IRa 与外照射指数 Ir 的合格判定标准值（限值）。MCM 仿真比较使用。
 #[derive(Debug, Clone, Copy, PartialEq, Serialize, Deserialize)]
 pub struct AcceptanceLimits {
     pub ira_limit: f64,
@@ -51,10 +121,59 @@ pub struct CalculationResult {
     pub ira: IndexResult,
     pub ir: IndexResult,
     pub conclusion: Conclusion,
+    /// 分析判定结果（有效性 + 合格/不合格/分级）。
+    pub analysis: AnalysisResult,
     /// 蒙特卡洛法（MCM）仿真结果。
     pub mcm: McmResult,
 }
 
+/// 分析判定结果（PDF 第 3 节）。
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct AnalysisResult {
+    /// 总比活度 A1·a + A2·b + A3·c（Bq/kg），用于 3.1 有效性判定。
+    pub total_calibrated_activity: f64,
+    /// 有效性判定结果。
+    pub validity: Validity,
+    /// 最终判定结论。
+    pub verdict: Verdict,
+}
+
+/// 3.1 有效性判定结果。
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+pub enum Validity {
+    /// 总比活度 ≤ 37 Bq/kg，直接有效。
+    LowActivityExempt,
+    /// 总比活度 > 37 Bq/kg 且 Ur(IRa) ≤ 20%（k=2），有效。
+    UncertaintyAcceptable,
+    /// 总比活度 > 37 Bq/kg 且 Ur(IRa) > 20%，无效。
+    Invalid,
+}
+
+/// 3.2 临界值判定的最终结论。
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+pub enum Verdict {
+    /// 主体/空心材料：合格。
+    Qualified,
+    /// 不合格。
+    Unqualified,
+    /// 装饰装修材料：A/B/C 分级结果。
+    DecorativeClass(DecorClass),
+    /// 真值区间跨越极限值，建议增加测量次数至 6 次。
+    NeedMoreMeasurements,
+    /// 有效性不成立，结果无效。
+    InvalidResult,
+}
+
+/// 装饰装修材料分级。
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+pub enum DecorClass {
+    A,
+    B,
+    C,
+    /// 不满足 C 类，不可用于建筑材料。
+    Unqualified,
+}
+
 /// 蒙特卡洛法（MCM）整体仿真结果。
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 pub struct McmResult {
@@ -103,8 +222,18 @@ pub struct NuclideResult {
 #[derive(Debug, Clone, Copy, PartialEq, Serialize, Deserialize)]
 pub struct IndexResult {
     pub value: f64,
+    /// 标准（合成）不确定度 u。
     pub standard_uncertainty: f64,
+    /// 扩展不确定度 U = u·k（k=2）。
+    pub expanded_uncertainty: f64,
+    /// 相对标准不确定度 u/value（k=1），百分数。
     pub relative_uncertainty_percent: f64,
+    /// 相对扩展不确定度 U/value（k=2），百分数。
+    pub relative_expanded_uncertainty_percent: f64,
+    /// 95% 真值区间下限 = value − U（GUM 解析法）。
+    pub p2_5: f64,
+    /// 95% 真值区间上限 = value + U。
+    pub p97_5: f64,
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
diff --git a/src/lib.rs b/src/lib.rs
index c41623d..9ff9cbe 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -4,6 +4,7 @@ mod mcm;
 
 pub use calculator::calculate_sample;
 pub use domain::{
-    AcceptanceLimits, CalculationError, CalculationResult, CalibrationParams, Conclusion,
-    IndexResult, McmIndexStats, McmResult, NuclideMeasurements, NuclideResult, SampleInput,
+    AcceptanceLimits, AnalysisResult, CalculationError, CalculationResult, CalibrationParams,
+    Conclusion, DecorClass, IndexResult, LimitTier, MaterialType, McmIndexStats, McmResult,
+    NuclideMeasurements, NuclideResult, SampleInput, Validity, Verdict,
 };
diff --git a/tests/calculator_tests.rs b/tests/calculator_tests.rs
index 1189afe..4191d66 100644
--- a/tests/calculator_tests.rs
+++ b/tests/calculator_tests.rs
@@ -1,41 +1,45 @@
 use ceramic_radioactivity::{
-    calculate_sample, AcceptanceLimits, CalibrationParams, Conclusion, NuclideMeasurements,
-    SampleInput,
+    calculate_sample, CalibrationParams, Conclusion, DecorClass, MaterialType, NuclideMeasurements,
+    SampleInput, Validity, Verdict,
 };
 
+fn calibration(factor: f64, expanded_uncertainty_percent: f64) -> CalibrationParams {
+    CalibrationParams {
+        factor,
+        expanded_uncertainty_percent,
+        coverage_factor: 2.0,
+    }
+}
+
 fn default_input() -> SampleInput {
     SampleInput {
         ra: NuclideMeasurements {
             measured_values: vec![100.0, 102.0, 98.0, 101.0, 99.0, 100.0],
-            calibration: CalibrationParams {
-                factor: 0.916,
-                expanded_uncertainty_percent: 6.3,
-                coverage_factor: 2.0,
-            },
+            calibration: calibration(0.916, 6.3),
         },
         th: NuclideMeasurements {
             measured_values: vec![110.0, 111.0, 109.0, 110.0, 112.0, 108.0],
-            calibration: CalibrationParams {
-                factor: 0.884,
-                expanded_uncertainty_percent: 6.9,
-                coverage_factor: 2.0,
-            },
+            calibration: calibration(0.884, 6.9),
         },
         k: NuclideMeasurements {
             measured_values: vec![560.0, 565.0, 555.0, 562.0, 558.0, 561.0],
-            calibration: CalibrationParams {
-                factor: 0.961,
-                expanded_uncertainty_percent: 6.7,
-                coverage_factor: 2.0,
-            },
-        },
-        limits: AcceptanceLimits {
-            ira_limit: 1.0,
-            ir_limit: 1.0,
+            calibration: calibration(0.961, 6.7),
         },
+        material_type: MaterialType::BuildingMainBody,
+        sample_id: None,
+        calculation_date: None,
     }
 }
 
+/// 由目标校准比活度构造 n=6 的等值输入（A 类不确定度为 0，仅保留 B 类）。
+fn from_calibrated(ra_cal: f64, th_cal: f64, k_cal: f64) -> SampleInput {
+    let mut input = default_input();
+    input.ra.measured_values = vec![ra_cal / 0.916; 6];
+    input.th.measured_values = vec![th_cal / 0.884; 6];
+    input.k.measured_values = vec![k_cal / 0.961; 6];
+    input
+}
+
 #[test]
 fn calculates_indices_and_ok_conclusion_for_six_measurements() {
     let result = calculate_sample(default_input()).expect("valid sample should calculate");
@@ -47,6 +51,146 @@ fn calculates_indices_and_ok_conclusion_for_six_measurements() {
     assert_close(result.ira.value, 0.458, 1e-9);
     assert_close(result.ir.value, 0.749_739_035_821_535_9, 1e-9);
     assert_eq!(result.conclusion, Conclusion::Ok);
+    assert_eq!(result.analysis.verdict, Verdict::Qualified);
+}
+
+/// 对齐 PDF 单次测量算例（A1=83.439, A2=116.995, A3=554.268）。
+#[test]
+fn single_measurement_matches_pdf_example() {
+    let input = SampleInput {
+        ra: NuclideMeasurements {
+            measured_values: vec![83.439],
+            calibration: calibration(0.916, 6.3),
+        },
+        th: NuclideMeasurements {
+            measured_values: vec![116.995],
+            calibration: calibration(0.884, 6.9),
+        },
+        k: NuclideMeasurements {
+            measured_values: vec![554.268],
+            calibration: calibration(0.961, 6.7),
+        },
+        material_type: MaterialType::BuildingMainBody,
+        sample_id: Some("PDF-EX".to_string()),
+        calculation_date: Some("2026-06-11".to_string()),
+    };
+
+    let result = calculate_sample(input).expect("single measurement should calculate");
+
+    assert_eq!(result.measurement_count, 1);
+    // A 类不确定度为 0。
+    assert_close(result.ra.type_a_uncertainty, 0.0, 1e-12);
+
+    // 2.1 检测结果。
+    assert_close(result.ira.value, 0.38, 5e-3);
+    assert_close(result.ir.value, 0.73, 5e-3);
+
+    // 2.2.3 标准不确定度、2.2.4 扩展不确定度、2.2.6 真值区间。
+    assert_close(result.ira.standard_uncertainty, 0.012, 5e-4);
+    assert_close(result.ira.expanded_uncertainty, 0.024, 1e-3);
+    // PDF 区间用已四舍五入的 0.38±0.024 得 0.36/0.40；此处用未舍入值，放宽容差。
+    assert_close(result.ira.p2_5, 0.36, 1e-2);
+    assert_close(result.ira.p97_5, 0.40, 1e-2);
+    assert_close(result.ir.standard_uncertainty, 0.016, 5e-4);
+    assert_close(result.ir.expanded_uncertainty, 0.032, 1e-3);
+
+    // 2.2.5 相对扩展不确定度 k=2。
+    assert_close(result.ira.relative_expanded_uncertainty_percent, 6.3, 0.2);
+    assert_close(result.ir.relative_expanded_uncertainty_percent, 4.4, 0.2);
+
+    // 3.1 有效性 + 3.2 判定。
+    assert_close(result.analysis.total_calibrated_activity, 712.5, 1.0);
+    assert_eq!(result.analysis.validity, Validity::UncertaintyAcceptable);
+    assert_eq!(result.analysis.verdict, Verdict::Qualified);
+}
+
+#[test]
+fn low_activity_sample_is_exempt_and_valid() {
+    let input = SampleInput {
+        ra: NuclideMeasurements {
+            measured_values: vec![2.0],
+            calibration: calibration(0.916, 6.3),
+        },
+        th: NuclideMeasurements {
+            measured_values: vec![2.0],
+            calibration: calibration(0.884, 6.9),
+        },
+        k: NuclideMeasurements {
+            measured_values: vec![2.0],
+            calibration: calibration(0.961, 6.7),
+        },
+        material_type: MaterialType::BuildingMainBody,
+        sample_id: None,
+        calculation_date: None,
+    };
+
+    let result = calculate_sample(input).expect("low activity sample should calculate");
+
+    assert!(result.analysis.total_calibrated_activity <= 37.0);
+    assert_eq!(result.analysis.validity, Validity::LowActivityExempt);
+    assert_eq!(result.analysis.verdict, Verdict::Qualified);
+}
+
+#[test]
+fn high_uncertainty_above_37_is_invalid() {
+    let mut input = default_input();
+    input.ra.measured_values = vec![10.0, 200.0, 400.0];
+    input.th.measured_values = vec![10.0, 200.0, 400.0];
+    input.k.measured_values = vec![10.0, 200.0, 400.0];
+
+    let result = calculate_sample(input).expect("valid sample should calculate");
+
+    assert!(result.analysis.total_calibrated_activity > 37.0);
+    assert_eq!(result.analysis.validity, Validity::Invalid);
+    assert_eq!(result.analysis.verdict, Verdict::InvalidResult);
+}
+
+#[test]
+fn main_body_unqualified_when_interval_above_limit() {
+    // IRa ≈ 1.5，区间整体高于 1.0。
+    let result =
+        calculate_sample(from_calibrated(300.0, 50.0, 50.0)).expect("valid sample should calculate");
+
+    assert!(result.ira.p2_5 > 1.0);
+    assert_eq!(result.analysis.verdict, Verdict::Unqualified);
+}
+
+#[test]
+fn main_body_needs_more_measurements_when_interval_straddles_limit() {
+    // IRa = 1.0，区间跨越 1.0。
+    let result =
+        calculate_sample(from_calibrated(200.0, 50.0, 50.0)).expect("valid sample should calculate");
+
+    assert!(result.ira.p2_5 < 1.0 && result.ira.p97_5 > 1.0);
+    assert_eq!(result.analysis.verdict, Verdict::NeedMoreMeasurements);
+}
+
+#[test]
+fn decorative_material_classifies_into_tiers() {
+    // A 类：IRa、Ir 均低。
+    let a = calculate_sample(decorative(100.0, 100.0, 100.0)).expect("valid");
+    assert_eq!(a.analysis.verdict, Verdict::DecorativeClass(DecorClass::A));
+
+    // B 类：Ir 超 A 限(1.3) 但在 B 限(1.9) 内，IRa 低。
+    let b = calculate_sample(decorative(100.0, 317.0, 42.0)).expect("valid");
+    assert_eq!(b.analysis.verdict, Verdict::DecorativeClass(DecorClass::B));
+
+    // C 类：Ir 超 B 限(1.9) 但在 C 限(2.8) 内。
+    let c = calculate_sample(decorative(100.0, 520.0, 100.0)).expect("valid");
+    assert_eq!(c.analysis.verdict, Verdict::DecorativeClass(DecorClass::C));
+
+    // 不合格：Ir 超 C 限(2.8)。
+    let fail = calculate_sample(decorative(100.0, 900.0, 100.0)).expect("valid");
+    assert_eq!(
+        fail.analysis.verdict,
+        Verdict::DecorativeClass(DecorClass::Unqualified)
+    );
+}
+
+fn decorative(ra_cal: f64, th_cal: f64, k_cal: f64) -> SampleInput {
+    let mut input = from_calibrated(ra_cal, th_cal, k_cal);
+    input.material_type = MaterialType::DecorativeMaterial;
+    input
 }
 
 #[test]
@@ -125,14 +269,12 @@ fn monte_carlo_is_deterministic_for_same_input() {
 }
 
 #[test]
-fn monte_carlo_gives_about_half_pass_probability_when_limit_equals_mean() {
-    let mut input = default_input();
-    let analytical = calculate_sample(input.clone()).expect("valid sample should calculate");
-
-    // 将 IRa 标准值设为其均值，合格概率应接近 0.5。
-    input.limits.ira_limit = analytical.ira.value;
-    let result = calculate_sample(input).expect("valid sample should calculate");
+fn monte_carlo_gives_about_half_pass_probability_when_index_equals_limit() {
+    // 主体材料 IRa 标准值为 1.0；构造 IRa=1.0 的样本，合格概率应接近 0.5。
+    let result =
+        calculate_sample(from_calibrated(200.0, 50.0, 50.0)).expect("valid sample should calculate");
 
+    assert_close(result.ira.value, 1.0, 1e-9);
     assert_close(result.mcm.ira.pass_probability, 0.5, 0.03);
     assert_close(
         result.mcm.ira.fail_probability,
diff --git a/ui/public/logo.png b/ui/public/logo.png
new file mode 100644
index 0000000..0e793b7
Binary files /dev/null and b/ui/public/logo.png differ
diff --git a/ui/src/App.tsx b/ui/src/App.tsx
index 89cb4ee..90e8082 100644
--- a/ui/src/App.tsx
+++ b/ui/src/App.tsx
@@ -1,399 +1,78 @@
-import { useMemo, useRef, useState } from "react";
-import { invoke } from "@tauri-apps/api/core";
-import { Alert, Button, Card, ConfigProvider, InputNumber, Table, Tag } from "antd";
+import { useState } from "react";
+import { App as AntApp, ConfigProvider, Tabs } from "antd";
 import zhCN from "antd/locale/zh_CN";
+import { CalculatorPanel } from "./CalculatorPanel";
+import { HistoryTab } from "./HistoryTab";
+import type { SampleInput } from "./types";
 
-type Conclusion = "Ok" | "IncreaseMeasurementsToSix" | "RecalibrateInstrument";
-
-type CalibrationParams = {
-  factor: number;
-  expanded_uncertainty_percent: number;
-  coverage_factor: number;
-};
-
-type NuclideMeasurements = {
-  measured_values: number[];
-  calibration: CalibrationParams;
-};
-
-type AcceptanceLimits = {
-  ira_limit: number;
-  ir_limit: number;
-};
-
-type SampleInput = {
-  ra: NuclideMeasurements;
-  th: NuclideMeasurements;
-  k: NuclideMeasurements;
-  limits: AcceptanceLimits;
-};
-
-type McmIndexStats = {
-  mean: number;
-  std_dev: number;
-  p2_5: number;
-  p97_5: number;
-  standard_value: number;
-  pass_probability: number;
-  fail_probability: number;
-};
-
-type McmResult = {
-  iterations: number;
-  ira: McmIndexStats;
-  ir: McmIndexStats;
-  overall_pass_probability: number;
-  overall_fail_probability: number;
-};
-
-type NuclideResult = {
-  mean_measured: number;
-  mean_calibrated: number;
-  type_a_uncertainty: number;
-  type_b_relative: number;
-  type_b_uncertainty: number;
-  sensitivity_coefficient: number;
-  combined_uncertainty: number;
-};
-
-type IndexResult = {
-  value: number;
-  standard_uncertainty: number;
-  relative_uncertainty_percent: number;
-};
-
-type CalculationResult = {
-  measurement_count: number;
-  ra: NuclideResult;
-  th: NuclideResult;
-  k: NuclideResult;
-  ira: IndexResult;
-  ir: IndexResult;
-  conclusion: Conclusion;
-  mcm: McmResult;
-};
-
-type MeasurementRow = {
-  key: number;
-  ra: number | null;
-  th: number | null;
-  k: number | null;
-};
-
-type ResultRow = { name: string } & NuclideResult;
-
-type McmRow = { name: string } & McmIndexStats;
-
-type CalibrationRow = { key: string; name: string } & CalibrationParams;
-
-type FocusableInput = {
-  focus: () => void;
-};
-
-const defaultCalibration = {
-  ra: { factor: 0.916, expanded_uncertainty_percent: 6.3, coverage_factor: 2 },
-  th: { factor: 0.884, expanded_uncertainty_percent: 6.9, coverage_factor: 2 },
-  k: { factor: 0.961, expanded_uncertainty_percent: 6.7, coverage_factor: 2 }
-};
-
-const defaultLimits: AcceptanceLimits = { ira_limit: 1.0, ir_limit: 1.0 };
-
-const initialRows: MeasurementRow[] = [
-  { key: 1, ra: 100, th: 110, k: 560 },
-  { key: 2, ra: 102, th: 111, k: 565 },
-  { key: 3, ra: 98, th: 109, k: 555 },
-  { key: 4, ra: 101, th: 110, k: 562 },
-  { key: 5, ra: 99, th: 112, k: 558 },
-  { key: 6, ra: 100, th: 108, k: 561 }
-];
-
-const conclusionText: Record<Conclusion, string> = {
-  Ok: "OK",
-  IncreaseMeasurementsToSix: "请增加试验次数至 6 次",
-  RecalibrateInstrument: "校准仪器后重新测量"
-};
-
-function formatNumber(value: number, digits = 4) {
-  if (!Number.isFinite(value)) return "-";
-  return value.toFixed(digits);
-}
-
-function formatPercent(value: number, digits = 2) {
-  if (!Number.isFinite(value)) return "-";
-  return (value * 100).toFixed(digits) + "%";
-}
-
-function App() {
-  const [rows, setRows] = useState<MeasurementRow[]>(initialRows);
-  const [limits, setLimits] = useState<AcceptanceLimits>(defaultLimits);
-  const [result, setResult] = useState<CalculationResult | null>(null);
-  const [error, setError] = useState<string | null>(null);
-  const [loading, setLoading] = useState(false);
-  const firstCellRefs = useRef<Record<number, FocusableInput | null>>({});
-
-  const dataSource = useMemo(() => rows, [rows]);
-
-  const updateRow = (key: number, field: keyof Omit<MeasurementRow, "key">, value: number | null) => {
-    setRows((current) =>
-      current.map((row) => (row.key === key ? { ...row, [field]: value } : row))
-    );
-  };
-
-  const addRow = () => {
-    const key = Date.now();
-    setRows((current) => [...current, { key, ra: null, th: null, k: null }]);
-    window.setTimeout(() => firstCellRefs.current[key]?.focus(), 0);
-  };
-
-  const removeRow = (key: number) => {
-    setRows((current) => current.filter((row) => row.key !== key));
-  };
-
-  const buildInput = (): SampleInput => {
-    const toValues = (field: keyof Omit<MeasurementRow, "key">) =>
-      rows.map((row) => row[field]).filter((value): value is number => typeof value === "number");
-
-    return {
-      ra: { measured_values: toValues("ra"), calibration: defaultCalibration.ra },
-      th: { measured_values: toValues("th"), calibration: defaultCalibration.th },
-      k: { measured_values: toValues("k"), calibration: defaultCalibration.k },
-      limits
-    };
-  };
-
-  const calculate = async () => {
-    setLoading(true);
-    setError(null);
-    try {
-      const response = await invoke<CalculationResult>("calculate", { input: buildInput() });
-      setResult(response);
-    } catch (err) {
-      setResult(null);
-      setError(err instanceof Error ? err.message : String(err));
-    } finally {
-      setLoading(false);
-    }
-  };
-
+function Brand() {
   return (
-    <ConfigProvider locale={zhCN}>
-      <main className="app-shell">
-        <section className="workspace">
-          <div className="content-grid">
-            <Card
-              title="重复测量值"
-              className="panel measurements-panel"
-            >
-              <div className="measurement-table">
-                <Table<MeasurementRow>
-                  pagination={false}
-                  dataSource={dataSource}
-                  rowKey="key"
-                  size="small"
-                  columns={[
-                    {
-                      title: "序号",
-                      key: "index",
-                      width: 56,
-                      align: "center",
-                      render: (_, _row, index) => index + 1
-                    },
-                    {
-                      title: "Ra-226",
-                      dataIndex: "ra",
-                      render: (_, row) => (
-                        <InputNumber
-                          ref={(instance) => {
-                            firstCellRefs.current[row.key] = instance;
-                          }}
-                          value={row.ra}
-                          min={0}
-                          onChange={(value) => updateRow(row.key, "ra", value)}
-                        />
-                      )
-                    },
-                    {
-                      title: "Th-232",
-                      dataIndex: "th",
-                      render: (_, row) => (
-                        <InputNumber value={row.th} min={0} onChange={(value) => updateRow(row.key, "th", value)} />
-                      )
-                    },
-                    {
-                      title: "K-40",
-                      dataIndex: "k",
-                      render: (_, row) => (
-                        <InputNumber value={row.k} min={0} onChange={(value) => updateRow(row.key, "k", value)} />
-                      )
-                    },
-                    {
-                      title: "",
-                      key: "action",
-                      width: 88,
-                      render: (_, row) => (
-                        <Button danger size="small" disabled={rows.length <= 2} onClick={() => removeRow(row.key)}>
-                          删除
-                        </Button>
-                      )
-                    }
-                  ]}
-                />
-              </div>
-              <div className="measurement-actions">
-                <Button size="small" block onClick={addRow}>
-                  添加次数
-                </Button>
-                <Button type="primary" size="small" block loading={loading} onClick={calculate}>
-                  计算
-                </Button>
-              </div>
-            </Card>
-
-            <Card title="校准参数 / 判定标准值" className="panel compact-panel">
-              <Table<CalibrationRow>
-                className="calibration-table"
-                pagination={false}
-                size="small"
-                rowKey="key"
-                dataSource={[
-                  { key: "ra", name: "Ra", ...defaultCalibration.ra },
-                  { key: "th", name: "Th", ...defaultCalibration.th },
-                  { key: "k", name: "K", ...defaultCalibration.k }
-                ]}
-                columns={[
-                  { title: "核素", dataIndex: "name", align: "center" },
-                  { title: "a", dataIndex: "factor", align: "center" },
-                  {
-                    title: "U",
-                    dataIndex: "expanded_uncertainty_percent",
-                    align: "center",
-                    render: (value: number) => `${value}%`
-                  },
-                  { title: "k", dataIndex: "coverage_factor", align: "center" }
-                ]}
-              />
-              <div className="limits-form">
-                <div className="limit-field">
-                  <span className="limit-label">IRa 标准值</span>
-                  <InputNumber
-                    value={limits.ira_limit}
-                    min={0}
-                    step={0.1}
-                    onChange={(value) => setLimits((current) => ({ ...current, ira_limit: value ?? 0 }))}
-                  />
-                </div>
-                <div className="limit-field">
-                  <span className="limit-label">Ir 标准值</span>
-                  <InputNumber
-                    value={limits.ir_limit}
-                    min={0}
-                    step={0.1}
-                    onChange={(value) => setLimits((current) => ({ ...current, ir_limit: value ?? 0 }))}
-                  />
-                </div>
-              </div>
-            </Card>
-          </div>
-
-          {error ? <Alert type="error" message={error} showIcon /> : null}
-
-          <div className="results-area">
-            {result ? (
-              <div className="results-row">
-              <Card title="计算结果（GUM 法）" className="panel">
-                <div className="result-grid">
-                  <ResultTile title="IRa" value={result.ira.value} uncertainty={result.ira.relative_uncertainty_percent} />
-                  <ResultTile title="Ir" value={result.ir.value} uncertainty={result.ir.relative_uncertainty_percent} />
-                  <div className="result-tile conclusion-tile">
-                    <span>判定</span>
-                    <Tag color={result.conclusion === "Ok" ? "success" : "warning"}>
-                      {conclusionText[result.conclusion]}
-                    </Tag>
-                  </div>
-                </div>
-                <Table<ResultRow>
-                  pagination={false}
-                  rowKey="name"
-                  size="small"
-                  dataSource={[
-                    { name: "Ra-226", ...result.ra },
-                    { name: "Th-232", ...result.th },
-                    { name: "K-40", ...result.k }
-                  ]}
-                  columns={[
-                    { title: "核素", dataIndex: "name" },
-                    { title: "均值", dataIndex: "mean_measured", render: (value: number) => formatNumber(value) },
-                    { title: "校准活度", dataIndex: "mean_calibrated", render: (value: number) => formatNumber(value) },
-                    { title: "A 类", dataIndex: "type_a_uncertainty", render: (value: number) => formatNumber(value) },
-                    { title: "B 类相对", dataIndex: "type_b_relative", render: (value) => formatNumber(value * 100, 3) + "%" },
-                    { title: "合成", dataIndex: "combined_uncertainty", render: (value: number) => formatNumber(value) }
-                  ]}
-                />
-              </Card>
-
-              <Card title={`蒙特卡洛仿真（MCM，${result.mcm.iterations} 次）`} className="panel">
-                <div className="result-grid">
-                  <div className="result-tile">
-                    <span>综合合格概率</span>
-                    <strong>{formatPercent(result.mcm.overall_pass_probability)}</strong>
-                    <small>IRa 与 Ir 同时合格</small>
-                  </div>
-                  <div className="result-tile">
-                    <span>综合不合格概率</span>
-                    <strong>{formatPercent(result.mcm.overall_fail_probability)}</strong>
-                    <small>任一指数超标</small>
-                  </div>
-                  <div className="result-tile conclusion-tile">
-                    <span>仿真判定</span>
-                    <Tag color={result.mcm.overall_pass_probability >= 0.95 ? "success" : "warning"}>
-                      {result.mcm.overall_pass_probability >= 0.95 ? "合格" : "不合格风险"}
-                    </Tag>
-                  </div>
-                </div>
-                <Table<McmRow>
-                  pagination={false}
-                  rowKey="name"
-                  size="small"
-                  dataSource={[
-                    { name: "IRa", ...result.mcm.ira },
-                    { name: "Ir", ...result.mcm.ir }
-                  ]}
-                  columns={[
-                    { title: "指数", dataIndex: "name" },
-                    { title: "平均值", dataIndex: "mean", render: (value: number) => formatNumber(value) },
-                    { title: "标准偏差", dataIndex: "std_dev", render: (value: number) => formatNumber(value) },
-                    { title: "P2.5", dataIndex: "p2_5", render: (value: number) => formatNumber(value) },
-                    { title: "P97.5", dataIndex: "p97_5", render: (value: number) => formatNumber(value) },
-                    { title: "标准值", dataIndex: "standard_value", render: (value: number) => formatNumber(value, 2) },
-                    {
-                      title: "合格概率",
-                      dataIndex: "pass_probability",
-                      render: (value: number) => (
-                        <Tag color={value >= 0.95 ? "success" : "warning"}>{formatPercent(value)}</Tag>
-                      )
-                    }
-                  ]}
-                />
-              </Card>
-              </div>
-            ) : (
-              <div className="results-placeholder">请计算后查看结果</div>
-            )}
-          </div>
-        </section>
-      </main>
-    </ConfigProvider>
-  );
-}
-
-function ResultTile(props: { title: string; value: number; uncertainty: number }) {
-  return (
-    <div className="result-tile">
-      <span>{props.title}</span>
-      <strong>{formatNumber(props.value)}</strong>
-      <small>相对不确定度 {formatNumber(props.uncertainty, 2)}%</small>
+    <div className="brand">
+      <img className="brand-logo" src="/logo.png" alt="" />
+      <span className="brand-name">建筑材料放射性判定分析</span>
     </div>
   );
 }
 
+function App() {
+  const [activeTab, setActiveTab] = useState("calc");
+  const [reloadSignal, setReloadSignal] = useState(0);
+  // 复算：带入历史 input 并强制重挂 CalculatorPanel（key 递增）。
+  const [loadedInput, setLoadedInput] = useState<SampleInput | undefined>(undefined);
+  const [calcKey, setCalcKey] = useState(0);
+
+  const recompute = (input: SampleInput) => {
+    setLoadedInput(input);
+    setCalcKey((k) => k + 1);
+    setActiveTab("calc");
+  };
+
+  return (
+    <ConfigProvider
+      locale={zhCN}
+      theme={{
+        token: {
+          colorPrimary: "#243150",
+          colorInfo: "#243150",
+          colorLink: "#243150",
+          colorLinkHover: "#3a4d78",
+          borderRadius: 8,
+          fontSize: 14
+        }
+      }}
+    >
+      <AntApp>
+        <main className="app-shell">
+          <Tabs
+            activeKey={activeTab}
+            onChange={setActiveTab}
+            className="main-tabs"
+            tabBarExtraContent={{ left: <Brand /> }}
+            items={[
+              {
+                key: "calc",
+                label: "计算",
+                children: (
+                  <CalculatorPanel
+                    key={calcKey}
+                    initialInput={loadedInput}
+                    onSaved={() => setReloadSignal((s) => s + 1)}
+                  />
+                )
+              },
+              {
+                key: "history",
+                label: "历史记录",
+                children: (
+                  <HistoryTab active={activeTab === "history"} reloadSignal={reloadSignal} onRecompute={recompute} />
+                )
+              }
+            ]}
+          />
+        </main>
+      </AntApp>
+    </ConfigProvider>
+  );
+}
+
 export { App };
diff --git a/ui/src/CalculatorPanel.tsx b/ui/src/CalculatorPanel.tsx
new file mode 100644
index 0000000..6050e43
--- /dev/null
+++ b/ui/src/CalculatorPanel.tsx
@@ -0,0 +1,416 @@
+import { useEffect, useMemo, useRef, useState } from "react";
+import { invoke } from "@tauri-apps/api/core";
+import { Alert, App, Button, Card, DatePicker, Input, InputNumber, Select, Table, Tag } from "antd";
+import dayjs, { type Dayjs } from "dayjs";
+import { ReportModal } from "./ReportView";
+import {
+  conclusionText,
+  defaultCalibration,
+  formatNumber,
+  formatPercent,
+  materialOptions,
+  materialTiers,
+  validityText,
+  verdictDisplay,
+  type CalculationResult,
+  type LimitTier,
+  type MaterialType,
+  type SampleInput
+} from "./types";
+
+type MeasurementRow = {
+  key: number;
+  ra: number | null;
+  th: number | null;
+  k: number | null;
+};
+
+type CalibrationRow = { key: string; name: string } & (typeof defaultCalibration)["ra"];
+
+type FocusableInput = { focus: () => void };
+
+type Props = {
+  initialInput?: SampleInput;
+  onSaved: () => void;
+};
+
+function rowsFromInput(input?: SampleInput): MeasurementRow[] {
+  if (!input) return [{ key: 1, ra: 100, th: 110, k: 560 }];
+  const n = input.ra.measured_values.length;
+  return Array.from({ length: n }, (_, i) => ({
+    key: i + 1,
+    ra: input.ra.measured_values[i] ?? null,
+    th: input.th.measured_values[i] ?? null,
+    k: input.k.measured_values[i] ?? null
+  }));
+}
+
+function CalculatorPanel({ initialInput, onSaved }: Props) {
+  const { message } = App.useApp();
+  const [rows, setRows] = useState<MeasurementRow[]>(() => rowsFromInput(initialInput));
+  const [materialType, setMaterialType] = useState<MaterialType>(
+    initialInput?.material_type ?? "BuildingMainBody"
+  );
+  const [sampleId, setSampleId] = useState<string>(initialInput?.sample_id ?? "");
+  const [calcDate, setCalcDate] = useState<Dayjs | null>(
+    initialInput?.calculation_date ? dayjs(initialInput.calculation_date) : dayjs()
+  );
+  const [result, setResult] = useState<CalculationResult | null>(null);
+  const [lastInput, setLastInput] = useState<SampleInput | null>(null);
+  const [error, setError] = useState<string | null>(null);
+  const [loading, setLoading] = useState(false);
+  const [saving, setSaving] = useState(false);
+  const [reportOpen, setReportOpen] = useState(false);
+  const firstCellRefs = useRef<Record<number, FocusableInput | null>>({});
+
+  const dataSource = useMemo(() => rows, [rows]);
+
+  const updateRow = (key: number, field: keyof Omit<MeasurementRow, "key">, value: number | null) => {
+    setRows((current) => current.map((row) => (row.key === key ? { ...row, [field]: value } : row)));
+  };
+
+  const addRow = () => {
+    const key = Date.now();
+    setRows((current) => [...current, { key, ra: null, th: null, k: null }]);
+    window.setTimeout(() => firstCellRefs.current[key]?.focus(), 0);
+  };
+
+  const removeRow = (key: number) => {
+    setRows((current) => current.filter((row) => row.key !== key));
+  };
+
+  const buildInput = (): SampleInput => {
+    const toValues = (field: keyof Omit<MeasurementRow, "key">) =>
+      rows.map((row) => row[field]).filter((value): value is number => typeof value === "number");
+
+    return {
+      ra: { measured_values: toValues("ra"), calibration: defaultCalibration.ra },
+      th: { measured_values: toValues("th"), calibration: defaultCalibration.th },
+      k: { measured_values: toValues("k"), calibration: defaultCalibration.k },
+      material_type: materialType,
+      sample_id: sampleId.trim() ? sampleId.trim() : null,
+      calculation_date: calcDate ? calcDate.format("YYYY-MM-DD") : null
+    };
+  };
+
+  const calculate = async () => {
+    setLoading(true);
+    setError(null);
+    const input = buildInput();
+    try {
+      const response = await invoke<CalculationResult>("calculate", { input });
+      setResult(response);
+      setLastInput(input);
+    } catch (err) {
+      setResult(null);
+      setLastInput(null);
+      setError(err instanceof Error ? err.message : String(err));
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  // 复算：带入历史记录后自动计算一次。
+  useEffect(() => {
+    if (initialInput) void calculate();
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  const save = async () => {
+    if (!result || !lastInput) return;
+    setSaving(true);
+    try {
+      await invoke<number>("save_record", {
+        args: { input: lastInput, result, created_at: new Date().toISOString() }
+      });
+      message.success("已保存到历史");
+      onSaved();
+    } catch (err) {
+      message.error(`保存失败：${String(err)}`);
+    } finally {
+      setSaving(false);
+    }
+  };
+
+  const tiers = materialTiers[materialType];
+
+  return (
+    <section className="workspace">
+      <div className="content-grid">
+        <Card title="重复测量值" className="panel measurements-panel">
+          <div className="measurement-table">
+            <Table<MeasurementRow>
+              pagination={false}
+              dataSource={dataSource}
+              rowKey="key"
+              size="small"
+              columns={[
+                { title: "序号", key: "index", width: 56, align: "center", render: (_, _row, index) => index + 1 },
+                {
+                  title: "Ra-226",
+                  dataIndex: "ra",
+                  render: (_, row) => (
+                    <InputNumber
+                      ref={(instance) => {
+                        firstCellRefs.current[row.key] = instance;
+                      }}
+                      value={row.ra}
+                      min={0}
+                      onChange={(value) => updateRow(row.key, "ra", value)}
+                    />
+                  )
+                },
+                {
+                  title: "Th-232",
+                  dataIndex: "th",
+                  render: (_, row) => (
+                    <InputNumber value={row.th} min={0} onChange={(value) => updateRow(row.key, "th", value)} />
+                  )
+                },
+                {
+                  title: "K-40",
+                  dataIndex: "k",
+                  render: (_, row) => (
+                    <InputNumber value={row.k} min={0} onChange={(value) => updateRow(row.key, "k", value)} />
+                  )
+                },
+                {
+                  title: "",
+                  key: "action",
+                  width: 88,
+                  render: (_, row) => (
+                    <Button danger size="small" disabled={rows.length <= 1} onClick={() => removeRow(row.key)}>
+                      删除
+                    </Button>
+                  )
+                }
+              ]}
+            />
+          </div>
+          <div className="measurement-actions">
+            <Button size="small" block onClick={addRow}>
+              添加次数
+            </Button>
+            <Button type="primary" size="small" block loading={loading} onClick={() => void calculate()}>
+              计算
+            </Button>
+            <Button size="small" block loading={saving} disabled={!result} onClick={() => void save()}>
+              保存到历史
+            </Button>
+            <Button size="small" block disabled={!result} onClick={() => setReportOpen(true)}>
+              预览 / 导出 PDF
+            </Button>
+          </div>
+        </Card>
+
+        <Card title="样品信息 / 校准参数 / 限值" className="panel compact-panel">
+          <div className="sample-form">
+            <div className="sample-field">
+              <span className="sample-label">样品编号</span>
+              <Input value={sampleId} placeholder="可选" onChange={(event) => setSampleId(event.target.value)} />
+            </div>
+            <div className="sample-field">
+              <span className="sample-label">计算日期</span>
+              <DatePicker value={calcDate} onChange={setCalcDate} style={{ width: "100%" }} />
+            </div>
+            <div className="sample-field">
+              <span className="sample-label">材料类型</span>
+              <Select<MaterialType>
+                value={materialType}
+                options={materialOptions}
+                onChange={setMaterialType}
+                style={{ width: "100%" }}
+              />
+            </div>
+          </div>
+
+          <div className="sample-tables">
+            <Table<CalibrationRow>
+              className="calibration-table"
+              pagination={false}
+              size="small"
+              rowKey="key"
+              dataSource={[
+                { key: "ra", name: "Ra", ...defaultCalibration.ra },
+                { key: "th", name: "Th", ...defaultCalibration.th },
+                { key: "k", name: "K", ...defaultCalibration.k }
+              ]}
+              columns={[
+                { title: "核素", dataIndex: "name", align: "center" },
+                { title: "a", dataIndex: "factor", align: "center" },
+                {
+                  title: "U",
+                  dataIndex: "expanded_uncertainty_percent",
+                  align: "center",
+                  render: (value: number) => `${value}%`
+                },
+                { title: "k", dataIndex: "coverage_factor", align: "center" }
+              ]}
+            />
+
+            <Table<LimitTier>
+              className="limit-table"
+              pagination={false}
+              size="small"
+              rowKey="label"
+              dataSource={tiers}
+              columns={[
+                { title: "级别", dataIndex: "label", align: "center" },
+                { title: "IRa 限", dataIndex: "ira", align: "center", render: (value: number | null) => value ?? "—" },
+                { title: "Ir 限", dataIndex: "ir", align: "center", render: (value: number | null) => value ?? "—" }
+              ]}
+            />
+          </div>
+        </Card>
+      </div>
+
+      {error ? <Alert type="error" message={error} showIcon /> : null}
+
+      <div className="results-area">
+        {result && lastInput ? (
+          <>
+            <Card
+              title="分析判定"
+              className="panel analysis-panel"
+              extra={
+                <span className="analysis-meta">
+                  {sampleId.trim() || "未编号"} · {calcDate ? calcDate.format("YYYY-MM-DD") : "无日期"} ·{" "}
+                  {result.measurement_count} 次测量
+                </span>
+              }
+            >
+              <div className="analysis-grid">
+                <div className="result-tile conclusion-tile">
+                  <span>有效性</span>
+                  <Tag color={validityText[result.analysis.validity].color}>
+                    {validityText[result.analysis.validity].text}
+                  </Tag>
+                  <small>总比活度 {formatNumber(result.analysis.total_calibrated_activity, 1)} Bq/kg（阈值 37）</small>
+                </div>
+                <div className="result-tile conclusion-tile">
+                  <span>最终判定</span>
+                  <Tag color={verdictDisplay(result.analysis.verdict).color}>
+                    {verdictDisplay(result.analysis.verdict).text}
+                  </Tag>
+                  {result.analysis.verdict === "NeedMoreMeasurements" ? <small>真值区间跨越极限值</small> : null}
+                </div>
+                <div className="result-tile">
+                  <span>IRa 真值区间</span>
+                  <strong>{formatNumber(result.ira.value)}</strong>
+                  <small>
+                    [{formatNumber(result.ira.p2_5)}, {formatNumber(result.ira.p97_5)}] · k=2{" "}
+                    {formatNumber(result.ira.relative_expanded_uncertainty_percent, 2)}%
+                  </small>
+                </div>
+                <div className="result-tile">
+                  <span>Ir 真值区间</span>
+                  <strong>{formatNumber(result.ir.value)}</strong>
+                  <small>
+                    [{formatNumber(result.ir.p2_5)}, {formatNumber(result.ir.p97_5)}] · k=2{" "}
+                    {formatNumber(result.ir.relative_expanded_uncertainty_percent, 2)}%
+                  </small>
+                </div>
+              </div>
+            </Card>
+
+            <div className="results-row">
+              <Card title="计算结果（GUM 法）" className="panel">
+                <div className="result-grid">
+                  <ResultTile title="IRa" value={result.ira.value} uncertainty={result.ira.relative_uncertainty_percent} />
+                  <ResultTile title="Ir" value={result.ir.value} uncertainty={result.ir.relative_uncertainty_percent} />
+                  <div className="result-tile conclusion-tile">
+                    <span>不确定度判定</span>
+                    <Tag color={result.conclusion === "Ok" ? "success" : "warning"}>
+                      {conclusionText[result.conclusion]}
+                    </Tag>
+                  </div>
+                </div>
+                <Table<{ name: string } & CalculationResult["ra"]>
+                  pagination={false}
+                  rowKey="name"
+                  size="small"
+                  dataSource={[
+                    { name: "Ra-226", ...result.ra },
+                    { name: "Th-232", ...result.th },
+                    { name: "K-40", ...result.k }
+                  ]}
+                  columns={[
+                    { title: "核素", dataIndex: "name" },
+                    { title: "均值", dataIndex: "mean_measured", render: (value: number) => formatNumber(value) },
+                    { title: "校准活度", dataIndex: "mean_calibrated", render: (value: number) => formatNumber(value) },
+                    { title: "A 类", dataIndex: "type_a_uncertainty", render: (value: number) => formatNumber(value) },
+                    { title: "B 类相对", dataIndex: "type_b_relative", render: (value) => formatNumber(value * 100, 3) + "%" },
+                    { title: "合成", dataIndex: "combined_uncertainty", render: (value: number) => formatNumber(value) }
+                  ]}
+                />
+              </Card>
+
+              <Card title={`蒙特卡洛仿真（MCM，${result.mcm.iterations} 次）`} className="panel">
+                <div className="result-grid">
+                  <div className="result-tile">
+                    <span>综合合格概率</span>
+                    <strong>{formatPercent(result.mcm.overall_pass_probability)}</strong>
+                    <small>IRa 与 Ir 同时合格</small>
+                  </div>
+                  <div className="result-tile">
+                    <span>不符合概率</span>
+                    <strong>{formatPercent(result.mcm.overall_fail_probability)}</strong>
+                    <small>95% 置信概率下</small>
+                  </div>
+                  <div className="result-tile conclusion-tile">
+                    <span>仿真判定</span>
+                    <Tag color={result.mcm.overall_fail_probability < 0.05 ? "success" : "warning"}>
+                      {result.mcm.overall_fail_probability < 0.05 ? "合格（不符合概率<5%）" : "不合格风险"}
+                    </Tag>
+                  </div>
+                </div>
+                <Table<{ name: string } & CalculationResult["mcm"]["ira"]>
+                  pagination={false}
+                  rowKey="name"
+                  size="small"
+                  dataSource={[
+                    { name: "IRa", ...result.mcm.ira },
+                    { name: "Ir", ...result.mcm.ir }
+                  ]}
+                  columns={[
+                    { title: "指数", dataIndex: "name" },
+                    { title: "平均值", dataIndex: "mean", render: (value: number) => formatNumber(value) },
+                    { title: "标准偏差", dataIndex: "std_dev", render: (value: number) => formatNumber(value) },
+                    { title: "P2.5", dataIndex: "p2_5", render: (value: number) => formatNumber(value) },
+                    { title: "P97.5", dataIndex: "p97_5", render: (value: number) => formatNumber(value) },
+                    { title: "标准值", dataIndex: "standard_value", render: (value: number) => formatNumber(value, 2) },
+                    {
+                      title: "合格概率",
+                      dataIndex: "pass_probability",
+                      render: (value: number) => <Tag color={value >= 0.95 ? "success" : "warning"}>{formatPercent(value)}</Tag>
+                    }
+                  ]}
+                />
+              </Card>
+            </div>
+          </>
+        ) : (
+          <div className="results-placeholder">请计算后查看结果</div>
+        )}
+      </div>
+
+      <ReportModal
+        open={reportOpen}
+        onClose={() => setReportOpen(false)}
+        detail={result && lastInput ? { input: lastInput, result } : null}
+      />
+    </section>
+  );
+}
+
+function ResultTile(props: { title: string; value: number; uncertainty: number }) {
+  return (
+    <div className="result-tile">
+      <span>{props.title}</span>
+      <strong>{formatNumber(props.value)}</strong>
+      <small>相对不确定度 {formatNumber(props.uncertainty, 2)}%</small>
+    </div>
+  );
+}
+
+export { CalculatorPanel };
diff --git a/ui/src/HistoryTab.tsx b/ui/src/HistoryTab.tsx
new file mode 100644
index 0000000..7dc0008
--- /dev/null
+++ b/ui/src/HistoryTab.tsx
@@ -0,0 +1,202 @@
+import { useCallback, useEffect, useState } from "react";
+import { invoke } from "@tauri-apps/api/core";
+import { App, Button, DatePicker, Input, Popconfirm, Select, Space, Table, Tag } from "antd";
+import dayjs, { type Dayjs } from "dayjs";
+import { ReportModal } from "./ReportView";
+import {
+  formatNumber,
+  materialOptions,
+  materialText,
+  verdictDisplay,
+  verdictKindOptions,
+  type MaterialType,
+  type RecordDetail,
+  type RecordFilter,
+  type RecordSummary,
+  type SampleInput
+} from "./types";
+
+const { RangePicker } = DatePicker;
+
+type Props = {
+  active: boolean;
+  reloadSignal: number;
+  onRecompute: (input: SampleInput) => void;
+};
+
+function HistoryTab({ active, reloadSignal, onRecompute }: Props) {
+  const { message } = App.useApp();
+  const [rows, setRows] = useState<RecordSummary[]>([]);
+  const [loading, setLoading] = useState(false);
+  const [sampleId, setSampleId] = useState("");
+  const [materialType, setMaterialType] = useState<MaterialType | null>(null);
+  const [verdictKind, setVerdictKind] = useState<string | null>(null);
+  const [range, setRange] = useState<[Dayjs | null, Dayjs | null] | null>(null);
+  const [report, setReport] = useState<RecordDetail | null>(null);
+  const [reportOpen, setReportOpen] = useState(false);
+
+  const fetchList = useCallback(async () => {
+    setLoading(true);
+    try {
+      const filter: RecordFilter = {
+        sample_id: sampleId.trim() || null,
+        material_type: materialType,
+        date_from: range?.[0] ? range[0]!.format("YYYY-MM-DD") : null,
+        date_to: range?.[1] ? range[1]!.format("YYYY-MM-DD") : null,
+        verdict_kind: verdictKind
+      };
+      const result = await invoke<RecordSummary[]>("list_records", { filter });
+      setRows(result);
+    } catch (err) {
+      message.error(`加载历史失败：${String(err)}`);
+    } finally {
+      setLoading(false);
+    }
+  }, [sampleId, materialType, verdictKind, range]);
+
+  useEffect(() => {
+    if (active) void fetchList();
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [active, reloadSignal]);
+
+  const openReport = async (id: number) => {
+    try {
+      const detail = await invoke<RecordDetail>("get_record", { id });
+      setReport(detail);
+      setReportOpen(true);
+    } catch (err) {
+      message.error(`读取记录失败：${String(err)}`);
+    }
+  };
+
+  const recompute = async (id: number) => {
+    try {
+      const detail = await invoke<RecordDetail>("get_record", { id });
+      onRecompute(detail.input);
+    } catch (err) {
+      message.error(`复算失败：${String(err)}`);
+    }
+  };
+
+  const exportExcel = async (id: number) => {
+    try {
+      const path = await invoke<string | null>("export_excel", { id });
+      if (path) message.success(`已导出 Excel：${path}`);
+      else message.info("已取消导出");
+    } catch (err) {
+      message.error(`导出失败：${String(err)}`);
+    }
+  };
+
+  const remove = async (id: number) => {
+    try {
+      await invoke("delete_record", { id });
+      message.success("已删除");
+      void fetchList();
+    } catch (err) {
+      message.error(`删除失败：${String(err)}`);
+    }
+  };
+
+  return (
+    <div className="history-tab">
+      <Space wrap className="history-filters">
+        <Input
+          allowClear
+          placeholder="样品编号"
+          style={{ width: 160 }}
+          value={sampleId}
+          onChange={(e) => setSampleId(e.target.value)}
+        />
+        <Select<MaterialType>
+          allowClear
+          placeholder="材料类型"
+          style={{ width: 180 }}
+          options={materialOptions}
+          value={materialType ?? undefined}
+          onChange={(v) => setMaterialType(v ?? null)}
+        />
+        <Select
+          allowClear
+          placeholder="判定"
+          style={{ width: 160 }}
+          options={verdictKindOptions}
+          value={verdictKind ?? undefined}
+          onChange={(v) => setVerdictKind(v ?? null)}
+        />
+        <RangePicker
+          value={range as never}
+          onChange={(v) => setRange(v as [Dayjs | null, Dayjs | null] | null)}
+        />
+        <Button type="primary" onClick={() => void fetchList()}>
+          查询
+        </Button>
+      </Space>
+
+      <Table<RecordSummary>
+        className="history-table"
+        rowKey="id"
+        size="small"
+        loading={loading}
+        dataSource={rows}
+        pagination={{ pageSize: 12, hideOnSinglePage: true }}
+        columns={[
+          {
+            title: "入库时间",
+            dataIndex: "created_at",
+            width: 150,
+            render: (v: string) => (dayjs(v).isValid() ? dayjs(v).format("YYYY-MM-DD HH:mm") : v)
+          },
+          {
+            title: "样品编号",
+            dataIndex: "sample_id",
+            render: (v: string | null) => v || "未编号"
+          },
+          {
+            title: "材料",
+            dataIndex: "material_type",
+            render: (v: MaterialType) => materialText(v)
+          },
+          { title: "IRa", dataIndex: "ira_value", width: 76, render: (v: number) => formatNumber(v, 3) },
+          { title: "Ir", dataIndex: "ir_value", width: 76, render: (v: number) => formatNumber(v, 3) },
+          {
+            title: "判定",
+            dataIndex: "verdict",
+            width: 140,
+            render: (_, row) => {
+              const d = verdictDisplay(row.verdict);
+              return <Tag color={d.color}>{d.text}</Tag>;
+            }
+          },
+          {
+            title: "操作",
+            key: "action",
+            width: 250,
+            render: (_, row) => (
+              <Space size={4} wrap>
+                <Button size="small" type="link" onClick={() => void openReport(row.id)}>
+                  查看
+                </Button>
+                <Button size="small" type="link" onClick={() => void recompute(row.id)}>
+                  复算
+                </Button>
+                <Button size="small" type="link" onClick={() => void exportExcel(row.id)}>
+                  Excel
+                </Button>
+                <Popconfirm title="确认删除该记录？" onConfirm={() => void remove(row.id)}>
+                  <Button size="small" type="link" danger>
+                    删除
+                  </Button>
+                </Popconfirm>
+              </Space>
+            )
+          }
+        ]}
+      />
+
+      <ReportModal open={reportOpen} onClose={() => setReportOpen(false)} detail={report} />
+    </div>
+  );
+}
+
+export { HistoryTab };
diff --git a/ui/src/ReportView.tsx b/ui/src/ReportView.tsx
new file mode 100644
index 0000000..57d376c
--- /dev/null
+++ b/ui/src/ReportView.tsx
@@ -0,0 +1,189 @@
+import { Button, Modal } from "antd";
+import {
+  formatNumber,
+  formatPercent,
+  materialText,
+  validityText,
+  verdictDisplay,
+  type CalculationResult,
+  type SampleInput
+} from "./types";
+
+type Props = {
+  input: SampleInput;
+  result: CalculationResult;
+};
+
+function Row(props: { label: string; value: React.ReactNode }) {
+  return (
+    <tr>
+      <th>{props.label}</th>
+      <td>{props.value}</td>
+    </tr>
+  );
+}
+
+/** A4 检测报告视图。屏幕预览与打印（导出 PDF）共用同一组件。 */
+function ReportView({ input, result }: Props) {
+  const n = input.ra.measured_values.length;
+  const validity = validityText[result.analysis.validity];
+  const verdict = verdictDisplay(result.analysis.verdict);
+
+  return (
+    <div className="report-root">
+      <h1 className="report-title">建筑材料放射性检测结果分析报告</h1>
+
+      <table className="report-meta">
+        <tbody>
+          <Row label="样品编号" value={input.sample_id?.trim() || "未编号"} />
+          <Row label="计算日期" value={input.calculation_date || "—"} />
+          <Row label="材料类型" value={materialText(input.material_type)} />
+          <Row label="测量次数" value={`${n} 次`} />
+        </tbody>
+      </table>
+
+      <h2 className="report-h2">一、检测结果与不确定度</h2>
+      <table className="report-table">
+        <thead>
+          <tr>
+            <th>指数</th>
+            <th>最佳估计值</th>
+            <th>扩展不确定度 U (k=2)</th>
+            <th>相对扩展不确定度 (k=2)</th>
+            <th>95% 真值区间</th>
+          </tr>
+        </thead>
+        <tbody>
+          {[
+            { name: "内照射指数 IRa", idx: result.ira },
+            { name: "外照射指数 Ir", idx: result.ir }
+          ].map(({ name, idx }) => (
+            <tr key={name}>
+              <td>{name}</td>
+              <td>{formatNumber(idx.value)}</td>
+              <td>{formatNumber(idx.expanded_uncertainty)}</td>
+              <td>{formatNumber(idx.relative_expanded_uncertainty_percent, 2)}%</td>
+              <td>
+                [{formatNumber(idx.p2_5)}, {formatNumber(idx.p97_5)}]
+              </td>
+            </tr>
+          ))}
+        </tbody>
+      </table>
+
+      <h2 className="report-h2">二、核素测量与中间量</h2>
+      <table className="report-table">
+        <thead>
+          <tr>
+            <th>核素</th>
+            <th>均值 (Bq/kg)</th>
+            <th>校准比活度</th>
+            <th>A 类不确定度</th>
+            <th>B 类相对</th>
+            <th>合成不确定度</th>
+          </tr>
+        </thead>
+        <tbody>
+          {[
+            { name: "Ra-226", nr: result.ra },
+            { name: "Th-232", nr: result.th },
+            { name: "K-40", nr: result.k }
+          ].map(({ name, nr }) => (
+            <tr key={name}>
+              <td>{name}</td>
+              <td>{formatNumber(nr.mean_measured)}</td>
+              <td>{formatNumber(nr.mean_calibrated)}</td>
+              <td>{formatNumber(nr.type_a_uncertainty)}</td>
+              <td>{formatNumber(nr.type_b_relative * 100, 3)}%</td>
+              <td>{formatNumber(nr.combined_uncertainty)}</td>
+            </tr>
+          ))}
+        </tbody>
+      </table>
+
+      <h2 className="report-h2">三、蒙特卡洛仿真（{result.mcm.iterations} 次）</h2>
+      <table className="report-table">
+        <thead>
+          <tr>
+            <th>指数</th>
+            <th>平均值</th>
+            <th>标准偏差</th>
+            <th>95% 区间</th>
+            <th>标准值</th>
+            <th>合格概率</th>
+          </tr>
+        </thead>
+        <tbody>
+          {[
+            { name: "IRa", s: result.mcm.ira },
+            { name: "Ir", s: result.mcm.ir }
+          ].map(({ name, s }) => (
+            <tr key={name}>
+              <td>{name}</td>
+              <td>{formatNumber(s.mean)}</td>
+              <td>{formatNumber(s.std_dev)}</td>
+              <td>
+                [{formatNumber(s.p2_5)}, {formatNumber(s.p97_5)}]
+              </td>
+              <td>{formatNumber(s.standard_value, 2)}</td>
+              <td>{formatPercent(s.pass_probability)}</td>
+            </tr>
+          ))}
+        </tbody>
+      </table>
+      <p className="report-note">
+        95% 置信概率下综合不符合概率：<strong>{formatPercent(result.mcm.overall_fail_probability)}</strong>
+      </p>
+
+      <h2 className="report-h2">四、分析判定</h2>
+      <table className="report-meta">
+        <tbody>
+          <Row
+            label="有效性"
+            value={`${validity.text}（总比活度 ${formatNumber(
+              result.analysis.total_calibrated_activity,
+              1
+            )} Bq/kg，阈值 37）`}
+          />
+          <Row label="最终判定" value={<strong>{verdict.text}</strong>} />
+        </tbody>
+      </table>
+
+      <div className="report-sign">
+        <span>检测：____________</span>
+        <span>审核：____________</span>
+        <span>批准：____________</span>
+      </div>
+    </div>
+  );
+}
+
+type ModalProps = {
+  open: boolean;
+  onClose: () => void;
+  detail: { input: SampleInput; result: CalculationResult } | null;
+};
+
+/** 报告预览弹窗，内含「打印 / 导出 PDF」按钮（走 window.print，由打印对话框另存为 PDF）。 */
+function ReportModal({ open, onClose, detail }: ModalProps) {
+  return (
+    <Modal
+      className="report-modal"
+      open={open}
+      onCancel={onClose}
+      width={920}
+      footer={[
+        <Button key="close" onClick={onClose}>
+          关闭
+        </Button>,
+        <Button key="print" type="primary" onClick={() => window.print()}>
+          打印 / 导出 PDF
+        </Button>
+      ]}
+    >
+      {detail ? <ReportView input={detail.input} result={detail.result} /> : null}
+    </Modal>
+  );
+}
+
+export { ReportView, ReportModal };
diff --git a/ui/src/styles.css b/ui/src/styles.css
index 5a34180..07b206d 100644
--- a/ui/src/styles.css
+++ b/ui/src/styles.css
@@ -4,49 +4,115 @@
 
 body {
   margin: 0;
-  color: #202124;
-  background: #f4f6f8;
+  color: #1f2933;
+  background: linear-gradient(180deg, #eef2f6 0%, #f4f6f8 240px);
   font-family: Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
 }
 
 .app-shell {
   min-height: 100vh;
-  height: 100vh;
-  padding: clamp(12px, 1.4vw, 28px);
+  padding: 8px clamp(12px, 1.4vw, 24px) clamp(12px, 1.4vw, 22px);
   display: flex;
   flex-direction: column;
 }
 
+.main-tabs {
+  width: 100%;
+  max-width: 2600px;
+  margin: 0 auto;
+}
+
+/* 深藏蓝顶栏：呼应应用图标（深底 + 金色 logo + 浅字） */
+.main-tabs > .ant-tabs-nav {
+  margin: 0 0 14px;
+  padding: 7px 18px;
+  background: linear-gradient(135deg, #1b2436 0%, #2a3958 100%);
+  border-radius: 12px;
+  box-shadow: 0 3px 12px rgba(27, 36, 54, 0.22);
+}
+
+.main-tabs > .ant-tabs-nav::before {
+  border-bottom: none !important;
+}
+
+.main-tabs .ant-tabs-tab {
+  font-size: 15px;
+  padding: 8px 4px;
+}
+
+.main-tabs .ant-tabs-tab .ant-tabs-tab-btn {
+  color: #aeb8cb;
+}
+
+.main-tabs .ant-tabs-tab:hover .ant-tabs-tab-btn {
+  color: #ffffff;
+}
+
+.main-tabs .ant-tabs-tab-active .ant-tabs-tab-btn {
+  color: #ffffff !important;
+  font-weight: 600;
+}
+
+/* 选中下划线用 logo 的金色 */
+.main-tabs .ant-tabs-ink-bar {
+  background: #f2b50c;
+  height: 3px !important;
+}
+
+.brand {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  padding-right: 18px;
+  margin-right: 10px;
+  border-right: 1px solid rgba(255, 255, 255, 0.16);
+}
+
+.brand-logo {
+  width: 30px;
+  height: 30px;
+  border-radius: 7px;
+  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
+}
+
+.brand-name {
+  font-size: 17px;
+  font-weight: 700;
+  letter-spacing: 0.5px;
+  color: #ffffff;
+  white-space: nowrap;
+}
+
+.results-toolbar {
+  display: flex;
+  gap: 8px;
+}
+
+.history-tab {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+}
+
 .workspace {
   width: 100%;
-  max-width: 2200px;
-  margin: 0 auto;
-  flex: 1;
+  margin: 0;
   display: flex;
   flex-direction: column;
-  min-height: 0;
+  gap: clamp(8px, 0.7vw, 14px);
 }
 
 .content-grid {
   display: grid;
-  grid-template-columns: minmax(0, 1fr) clamp(240px, 18vw, 360px);
-  grid-auto-rows: clamp(380px, 42vh, 620px);
+  grid-template-columns: minmax(0, 1fr) clamp(330px, 26vw, 480px);
   align-items: stretch;
-  gap: clamp(10px, 0.8vw, 18px);
-  margin-bottom: clamp(10px, 0.8vw, 18px);
-  flex: 0 0 auto;
+  gap: clamp(8px, 0.7vw, 14px);
 }
 
 .results-area {
-  flex: 1;
-  min-height: 0;
   display: flex;
   flex-direction: column;
-}
-
-.results-row {
-  flex: 1;
-  min-height: 0;
+  gap: clamp(10px, 0.8vw, 18px);
 }
 
 .results-row > .panel {
@@ -54,14 +120,8 @@ body {
   flex-direction: column;
 }
 
-.results-row > .panel > .ant-card-body {
-  flex: 1;
-  min-height: 0;
-  overflow: auto;
-}
-
 .results-placeholder {
-  flex: 1;
+  min-height: 200px;
   display: flex;
   align-items: center;
   justify-content: center;
@@ -73,21 +133,35 @@ body {
 }
 
 .panel {
-  border-radius: 8px;
-}
-
-.content-grid > .panel {
-  height: 100%;
+  border-radius: 10px;
+  border: 1px solid #e7ecf1;
+  box-shadow: 0 1px 2px rgba(16, 40, 60, 0.04), 0 2px 8px rgba(16, 40, 60, 0.05);
 }
 
 .panel .ant-card-head {
-  min-height: 38px;
+  min-height: 36px;
   padding: 0 12px;
+  background: #f7f9fb;
+  border-radius: 10px 10px 0 0;
 }
 
 .panel .ant-card-head-title {
   padding: 9px 0;
-  font-size: 14px;
+  font-size: 15px;
+  font-weight: 600;
+  color: #243150;
+}
+
+/* 卡片标题左侧的强调竖条（logo 金色） */
+.panel .ant-card-head-title::before {
+  content: "";
+  display: inline-block;
+  width: 3px;
+  height: 14px;
+  margin-right: 8px;
+  vertical-align: -2px;
+  border-radius: 2px;
+  background: #e3a008;
 }
 
 .panel .ant-card-body {
@@ -99,6 +173,10 @@ body {
   flex-direction: column;
 }
 
+.measurements-panel {
+  height: 100%;
+}
+
 .measurements-panel .ant-card-body {
   display: flex;
   flex-direction: column;
@@ -109,40 +187,50 @@ body {
 
 .measurement-table {
   flex: 1;
-  min-height: 0;
+  min-height: 96px;
   overflow: auto;
 }
 
 .compact-panel .ant-card-body {
-  height: auto;
-  overflow: visible;
   padding: 10px;
 }
 
-.calibration-table {
-  margin-bottom: 12px;
+/* 核素(校准) 与 级别(限值) 两表并排，压缩样品信息栏高度 */
+.sample-tables {
+  display: grid;
+  grid-template-columns: 1fr minmax(120px, 0.78fr);
+  gap: 10px;
+  align-items: start;
 }
 
-.limits-form {
+.calibration-table,
+.limit-table {
+  margin: 0;
+}
+
+.sample-form {
   display: flex;
   flex-direction: column;
   gap: 8px;
+  margin-bottom: 12px;
 }
 
-.limit-field {
+.sample-field {
   display: flex;
   align-items: center;
   gap: 8px;
 }
 
-.limit-label {
+.sample-label {
   flex-shrink: 0;
+  width: 64px;
   white-space: nowrap;
   color: #5f6368;
   font-size: 13px;
 }
 
-.limit-field .ant-input-number {
+.sample-field .ant-input,
+.sample-field .ant-input-number {
   flex: 1;
 }
 
@@ -152,7 +240,7 @@ body {
 
 .measurement-actions {
   display: grid;
-  grid-template-columns: repeat(2, minmax(0, 1fr));
+  grid-template-columns: repeat(4, minmax(0, 1fr));
   flex-shrink: 0;
   gap: 8px;
   margin-top: 8px;
@@ -176,51 +264,81 @@ body {
   margin-bottom: 10px;
 }
 
-.result-tile {
-  min-height: 58px;
-  padding: 7px 10px;
-  border: 1px solid #e5e7eb;
-  border-radius: 8px;
-  background: #ffffff;
-  display: flex;
-  flex-direction: column;
-  justify-content: center;
-  gap: 2px;
+.analysis-grid {
+  display: grid;
+  grid-template-columns: repeat(4, minmax(0, 1fr));
+  gap: 8px;
 }
 
-.result-tile span {
+.analysis-meta {
   color: #5f6368;
   font-size: 13px;
 }
 
+.result-tile {
+  min-height: 54px;
+  padding: 8px 11px;
+  border: 1px solid #e9edf1;
+  border-radius: 8px;
+  background: linear-gradient(180deg, #fbfcfd 0%, #f6f8fa 100%);
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  gap: 3px;
+}
+
+.result-tile span {
+  color: #69727c;
+  font-size: 13px;
+  letter-spacing: 0.2px;
+}
+
 .result-tile strong {
-  font-size: 18px;
-  line-height: 1.2;
+  font-size: 22px;
+  line-height: 1.15;
+  color: #1b2436;
+  font-variant-numeric: tabular-nums;
 }
 
 .result-tile small {
-  color: #5f6368;
-  font-size: 12px;
+  color: #79838d;
+  font-size: 12.5px;
+  font-variant-numeric: tabular-nums;
 }
 
 .conclusion-tile .ant-tag {
   width: fit-content;
   font-size: 14px;
-  padding: 2px 8px;
+  padding: 3px 10px;
+  border-radius: 6px;
+}
+
+/* 分析判定中的「最终判定」磁贴更突出（logo 金色调） */
+.analysis-grid .conclusion-tile:nth-child(2) {
+  background: linear-gradient(180deg, #fdf8ec 0%, #fbf1d6 100%);
+  border-color: #f0d894;
+}
+
+.analysis-grid .conclusion-tile:nth-child(2) .ant-tag {
+  font-size: 15px;
+  font-weight: 600;
+  padding: 4px 12px;
 }
 
 .ant-table-small .ant-table-thead > tr > th,
 .ant-table-small .ant-table-tbody > tr > td {
-  padding: 3px 8px;
+  padding: 5px 9px;
+  font-size: 13.5px;
 }
 
 .ant-input-number {
-  height: 24px;
+  height: 30px;
 }
 
 .ant-input-number .ant-input-number-input {
-  height: 22px;
-  padding: 0 7px;
+  height: 28px;
+  padding: 0 9px;
+  font-size: 14px;
 }
 
 /* Large screens / maximized window: scale content up so it stays comfortable. */
@@ -257,7 +375,7 @@ body {
     font-size: 22px;
   }
 
-  .limit-label {
+  .sample-label {
     font-size: 14px;
   }
 }
@@ -285,15 +403,109 @@ body {
     grid-template-columns: 1fr;
   }
 
-  .content-grid {
-    grid-auto-rows: auto;
-  }
-
-  .content-grid > .panel {
-    height: auto;
-  }
-
-  .measurements-panel {
-    height: 500px;
+  .analysis-grid,
+  .measurement-actions {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+}
+
+/* ---- 检测报告 ---- */
+.report-root {
+  color: #000;
+  background: #fff;
+  font-size: 13px;
+}
+
+.report-title {
+  text-align: center;
+  font-size: 20px;
+  margin: 0 0 16px;
+}
+
+.report-h2 {
+  font-size: 15px;
+  margin: 16px 0 8px;
+  padding-left: 8px;
+  border-left: 4px solid #1677ff;
+}
+
+.report-table,
+.report-meta {
+  width: 100%;
+  border-collapse: collapse;
+  margin-bottom: 8px;
+}
+
+.report-table th,
+.report-table td,
+.report-meta th,
+.report-meta td {
+  border: 1px solid #999;
+  padding: 4px 8px;
+  font-size: 13px;
+  text-align: center;
+}
+
+.report-table thead th {
+  background: #f0f3f7;
+}
+
+.report-meta th {
+  width: 92px;
+  text-align: left;
+  background: #f0f3f7;
+}
+
+.report-meta td {
+  text-align: left;
+}
+
+.report-note {
+  margin: 8px 0;
+}
+
+.report-sign {
+  display: flex;
+  gap: 24px;
+  margin-top: 36px;
+}
+
+/* ---- 打印 / 导出 PDF：仅输出报告本体 ---- */
+@page {
+  size: A4;
+  margin: 16mm;
+}
+
+@media print {
+  body * {
+    visibility: hidden !important;
+  }
+
+  .report-root,
+  .report-root * {
+    visibility: visible !important;
+  }
+
+  .report-root {
+    position: absolute;
+    left: 0;
+    top: 0;
+    width: 100%;
+  }
+
+  .ant-modal-mask,
+  .ant-modal-footer,
+  .ant-modal-close {
+    display: none !important;
+  }
+
+  .ant-modal,
+  .ant-modal-wrap,
+  .ant-modal-content,
+  .ant-modal-body {
+    position: static !important;
+    box-shadow: none !important;
+    padding: 0 !important;
+    background: transparent !important;
   }
 }
diff --git a/ui/src/types.ts b/ui/src/types.ts
new file mode 100644
index 0000000..e5f026b
--- /dev/null
+++ b/ui/src/types.ts
@@ -0,0 +1,195 @@
+// 与 Rust 端 (domain.rs / db.rs) 对应的共享类型与展示辅助。
+
+export type Conclusion = "Ok" | "IncreaseMeasurementsToSix" | "RecalibrateInstrument";
+
+export type MaterialType = "BuildingMainBody" | "HollowBuildingMainBody" | "DecorativeMaterial";
+
+export type Validity = "LowActivityExempt" | "UncertaintyAcceptable" | "Invalid";
+
+export type DecorClass = "A" | "B" | "C" | "Unqualified";
+
+export type Verdict =
+  | "Qualified"
+  | "Unqualified"
+  | "NeedMoreMeasurements"
+  | "InvalidResult"
+  | { DecorativeClass: DecorClass };
+
+export type CalibrationParams = {
+  factor: number;
+  expanded_uncertainty_percent: number;
+  coverage_factor: number;
+};
+
+export type NuclideMeasurements = {
+  measured_values: number[];
+  calibration: CalibrationParams;
+};
+
+export type SampleInput = {
+  ra: NuclideMeasurements;
+  th: NuclideMeasurements;
+  k: NuclideMeasurements;
+  material_type: MaterialType;
+  sample_id: string | null;
+  calculation_date: string | null;
+};
+
+export type McmIndexStats = {
+  mean: number;
+  std_dev: number;
+  p2_5: number;
+  p97_5: number;
+  standard_value: number;
+  pass_probability: number;
+  fail_probability: number;
+};
+
+export type McmResult = {
+  iterations: number;
+  ira: McmIndexStats;
+  ir: McmIndexStats;
+  overall_pass_probability: number;
+  overall_fail_probability: number;
+};
+
+export type NuclideResult = {
+  mean_measured: number;
+  mean_calibrated: number;
+  type_a_uncertainty: number;
+  type_b_relative: number;
+  type_b_uncertainty: number;
+  sensitivity_coefficient: number;
+  combined_uncertainty: number;
+};
+
+export type IndexResult = {
+  value: number;
+  standard_uncertainty: number;
+  expanded_uncertainty: number;
+  relative_uncertainty_percent: number;
+  relative_expanded_uncertainty_percent: number;
+  p2_5: number;
+  p97_5: number;
+};
+
+export type AnalysisResult = {
+  total_calibrated_activity: number;
+  validity: Validity;
+  verdict: Verdict;
+};
+
+export type CalculationResult = {
+  measurement_count: number;
+  ra: NuclideResult;
+  th: NuclideResult;
+  k: NuclideResult;
+  ira: IndexResult;
+  ir: IndexResult;
+  conclusion: Conclusion;
+  analysis: AnalysisResult;
+  mcm: McmResult;
+};
+
+export type RecordSummary = {
+  id: number;
+  sample_id: string | null;
+  material_type: MaterialType;
+  calc_date: string | null;
+  created_at: string;
+  ira_value: number;
+  ir_value: number;
+  validity: Validity;
+  verdict: Verdict;
+};
+
+export type RecordDetail = {
+  summary: RecordSummary;
+  input: SampleInput;
+  result: CalculationResult;
+};
+
+export type RecordFilter = {
+  sample_id: string | null;
+  material_type: MaterialType | null;
+  date_from: string | null;
+  date_to: string | null;
+  verdict_kind: string | null;
+};
+
+export const defaultCalibration = {
+  ra: { factor: 0.916, expanded_uncertainty_percent: 6.3, coverage_factor: 2 },
+  th: { factor: 0.884, expanded_uncertainty_percent: 6.9, coverage_factor: 2 },
+  k: { factor: 0.961, expanded_uncertainty_percent: 6.7, coverage_factor: 2 }
+};
+
+export const materialOptions: { value: MaterialType; label: string }[] = [
+  { value: "BuildingMainBody", label: "建筑主体材料" },
+  { value: "HollowBuildingMainBody", label: "空心率>25% 主体材料" },
+  { value: "DecorativeMaterial", label: "装饰装修材料" }
+];
+
+export type LimitTier = { label: string; ira: number | null; ir: number | null };
+
+export const materialTiers: Record<MaterialType, LimitTier[]> = {
+  BuildingMainBody: [{ label: "合格", ira: 1.0, ir: 1.0 }],
+  HollowBuildingMainBody: [{ label: "合格", ira: 1.0, ir: 1.3 }],
+  DecorativeMaterial: [
+    { label: "A 类", ira: 1.0, ir: 1.3 },
+    { label: "B 类", ira: 1.3, ir: 1.9 },
+    { label: "C 类", ira: null, ir: 2.8 }
+  ]
+};
+
+export const verdictKindOptions: { value: string; label: string }[] = [
+  { value: "Qualified", label: "合格" },
+  { value: "Unqualified", label: "不合格" },
+  { value: "DecorativeClass", label: "装饰分级 (A/B/C)" },
+  { value: "NeedMoreMeasurements", label: "建议增加次数" },
+  { value: "InvalidResult", label: "结果无效" }
+];
+
+export const validityText: Record<Validity, { text: string; color: string }> = {
+  LowActivityExempt: { text: "有效（低活度豁免 ≤37 Bq/kg）", color: "success" },
+  UncertaintyAcceptable: { text: "有效（Ur(IRa) ≤ 20%）", color: "success" },
+  Invalid: { text: "无效（Ur(IRa) > 20%）", color: "error" }
+};
+
+export const conclusionText: Record<Conclusion, string> = {
+  Ok: "OK",
+  IncreaseMeasurementsToSix: "请增加试验次数至 6 次",
+  RecalibrateInstrument: "校准仪器后重新测量"
+};
+
+export function materialText(material: MaterialType): string {
+  return materialOptions.find((o) => o.value === material)?.label ?? material;
+}
+
+export function verdictDisplay(verdict: Verdict): { text: string; color: string } {
+  if (typeof verdict === "object") {
+    const cls = verdict.DecorativeClass;
+    if (cls === "Unqualified") return { text: "不合格（不可用于建材）", color: "error" };
+    const color = cls === "A" ? "success" : cls === "B" ? "processing" : "warning";
+    return { text: `装饰装修 ${cls} 类`, color };
+  }
+  switch (verdict) {
+    case "Qualified":
+      return { text: "合格", color: "success" };
+    case "Unqualified":
+      return { text: "不合格", color: "error" };
+    case "NeedMoreMeasurements":
+      return { text: "建议增加至 6 次测量", color: "warning" };
+    case "InvalidResult":
+      return { text: "结果无效", color: "default" };
+  }
+}
+
+export function formatNumber(value: number, digits = 4): string {
+  if (!Number.isFinite(value)) return "-";
+  return value.toFixed(digits);
+}
+
+export function formatPercent(value: number, digits = 2): string {
+  if (!Number.isFinite(value)) return "-";
+  return (value * 100).toFixed(digits) + "%";
+}