diff --git a/memhub/apps/web/src/MemoryModeSettings.test.tsx b/memhub/apps/web/src/MemoryModeSettings.test.tsx
index 7566a09..47a849b 100644
--- a/memhub/apps/web/src/MemoryModeSettings.test.tsx
+++ b/memhub/apps/web/src/MemoryModeSettings.test.tsx
@@ -300,13 +300,131 @@ it("shows the default nightly evolve controls in ultra", async () => {
       "aria-checked",
     ),
   ).toBe("true");
-  expect((screen.getByLabelText("执行时间") as HTMLInputElement).value).toBe(
-    "03:00",
-  );
+  const timePicker = screen.getByRole("button", {
+    name: "执行时间，03:00",
+  });
+  expect(timePicker.tagName).toBe("BUTTON");
+  expect(timePicker.textContent).toContain("03:00");
   expect(screen.getByText(/只运行这一次，不改变每天的计划/)).toBeTruthy();
   expect(screen.getByRole("button", { name: "立即整合" })).toBeTruthy();
 });
 
+it("opens the time picker from the whole control and saves a complete time", async () => {
+  prepare("ultra");
+  vi.mocked(setEvolveSchedule).mockResolvedValue({
+    enabled: true,
+    time: "04:30",
+  });
+  const user = userEvent.setup();
+  render(<MemoryModeSettings hasActiveModel onConfigureModel={vi.fn()} />);
+
+  const trigger = await screen.findByRole("button", {
+    name: "执行时间，03:00",
+  });
+  await user.click(trigger);
+
+  const picker = screen.getByRole("dialog", { name: "执行时间" });
+  await user.selectOptions(
+    within(picker).getByRole("listbox", { name: "执行时间 HH" }),
+    "04",
+  );
+  await user.selectOptions(
+    within(picker).getByRole("listbox", { name: "执行时间 MM" }),
+    "30",
+  );
+  expect(setEvolveSchedule).not.toHaveBeenCalled();
+
+  await user.click(within(picker).getByRole("button", { name: "保存修改" }));
+  await waitFor(() =>
+    expect(setEvolveSchedule).toHaveBeenCalledExactlyOnceWith({
+      time: "04:30",
+    }),
+  );
+  await waitFor(() =>
+    expect(screen.getByRole("button", { name: "执行时间，04:30" })).toBe(
+      document.activeElement,
+    ),
+  );
+  expect(screen.queryByRole("dialog", { name: "执行时间" })).toBeNull();
+});
+
+it("keeps Tab inside the time picker and restores focus on Escape", async () => {
+  prepare("ultra");
+  const user = userEvent.setup();
+  render(<MemoryModeSettings hasActiveModel onConfigureModel={vi.fn()} />);
+
+  const trigger = await screen.findByRole("button", {
+    name: "执行时间，03:00",
+  });
+  await user.click(trigger);
+  const picker = screen.getByRole("dialog", { name: "执行时间" });
+  const hours = within(picker).getByRole("listbox", {
+    name: "执行时间 HH",
+  });
+  const save = within(picker).getByRole("button", { name: "保存修改" });
+  expect(document.activeElement).toBe(hours);
+  await user.keyboard("{Shift>}{Tab}{/Shift}");
+  expect(document.activeElement).toBe(save);
+  await user.keyboard("{Tab}");
+  expect(document.activeElement).toBe(hours);
+
+  await user.keyboard("{Escape}");
+
+  expect(screen.queryByRole("dialog", { name: "执行时间" })).toBeNull();
+  expect(document.activeElement).toBe(trigger);
+});
+
+it("keeps the selected time open for retry when saving fails", async () => {
+  prepare("ultra");
+  vi.mocked(setEvolveSchedule).mockRejectedValue(new Error("offline"));
+  const user = userEvent.setup();
+  render(<MemoryModeSettings hasActiveModel onConfigureModel={vi.fn()} />);
+
+  await user.click(
+    await screen.findByRole("button", { name: "执行时间，03:00" }),
+  );
+  const picker = screen.getByRole("dialog", { name: "执行时间" });
+  const minutes = within(picker).getByRole("listbox", {
+    name: "执行时间 MM",
+  });
+  await user.selectOptions(minutes, "30");
+  await user.click(within(picker).getByRole("button", { name: "保存修改" }));
+
+  expect(
+    await screen.findByText("自动整合设置未能保存，请重试。"),
+  ).toBeTruthy();
+  expect(screen.getByRole("dialog", { name: "执行时间" })).toBeTruthy();
+  expect((minutes as HTMLSelectElement).value).toBe("30");
+  await waitFor(() =>
+    expect(document.activeElement).toBe(
+      within(picker).getByRole("button", { name: "保存修改" }),
+    ),
+  );
+});
+
+it("keeps the time dialog and focus stable while saving is pending", async () => {
+  prepare("ultra");
+  vi.mocked(setEvolveSchedule).mockReturnValue(new Promise(() => {}));
+  const user = userEvent.setup();
+  render(<MemoryModeSettings hasActiveModel onConfigureModel={vi.fn()} />);
+
+  await user.click(
+    await screen.findByRole("button", { name: "执行时间，03:00" }),
+  );
+  const picker = screen.getByRole("dialog", { name: "执行时间" });
+  await user.selectOptions(
+    within(picker).getByRole("listbox", { name: "执行时间 MM" }),
+    "30",
+  );
+  await user.click(within(picker).getByRole("button", { name: "保存修改" }));
+  await waitFor(() => expect(setEvolveSchedule).toHaveBeenCalledTimes(1));
+
+  expect(document.activeElement).toBe(picker);
+  await user.keyboard("{Escape}");
+  expect(screen.getByRole("dialog", { name: "执行时间" })).toBe(picker);
+  expect(document.activeElement).toBe(picker);
+});
+
 it("hides the time field when automatic evolve is off and keeps the saved time visible", async () => {
   prepare("ultra");
   vi.mocked(setEvolveSchedule).mockResolvedValue({
@@ -322,7 +440,7 @@ it("hides the time field when automatic evolve is off and keeps the saved time v
   await user.click(automatic);
 
   await screen.findByText(/重新开启后仍按 03:00 运行/);
-  expect(screen.queryByLabelText("执行时间")).toBeNull();
+  expect(screen.queryByRole("button", { name: /执行时间/ })).toBeNull();
   expect(screen.getByRole("button", { name: "立即整合" })).toBeTruthy();
 });
 
diff --git a/memhub/apps/web/src/MemoryModeSettings.tsx b/memhub/apps/web/src/MemoryModeSettings.tsx
index c09634d..d7c630c 100644
--- a/memhub/apps/web/src/MemoryModeSettings.tsx
+++ b/memhub/apps/web/src/MemoryModeSettings.tsx
@@ -29,6 +29,7 @@ import { MemoryModeChoiceList } from "./MemoryModeChoiceList";
 import { useOnboardingTranslation } from "./onboarding-language";
 import { R6Button, R6Switch } from "./R6Controls";
 import { R6StateRecovery } from "./R6StateRecovery";
+import { TimePicker } from "./TimePicker";
 
 const MODE_COPY: Record<
   MemoryPipelineMode,
@@ -332,8 +333,10 @@ export function MemoryModeSettings({
     setError("");
     try {
       setScheduleState(await setEvolveSchedule(update));
+      return true;
     } catch {
       setError("自动整合设置未能保存，请重试。");
+      return false;
     } finally {
       setBusy(false);
     }
@@ -455,14 +458,12 @@ export function MemoryModeSettings({
                   </label>
                   <p>{text("使用这台设备的本地时间。")}</p>
                 </div>
-                <input
+                <TimePicker
                   id={`${id}-evolve-time`}
-                  type="time"
+                  label={text("执行时间")}
                   value={schedule.time}
                   disabled={busy || maintenance}
-                  onChange={(event) =>
-                    void changeSchedule({ time: event.target.value })
-                  }
+                  onChange={(time) => changeSchedule({ time })}
                 />
               </div>
             ) : null}
diff --git a/memhub/apps/web/src/TimePicker.tsx b/memhub/apps/web/src/TimePicker.tsx
new file mode 100644
index 0000000..b424806
--- /dev/null
+++ b/memhub/apps/web/src/TimePicker.tsx
@@ -0,0 +1,265 @@
+import { Check, ChevronDown, Clock3 } from "lucide-react";
+import {
+  useCallback,
+  useEffect,
+  useLayoutEffect,
+  useRef,
+  useState,
+} from "react";
+import { useOnboardingTranslation } from "./onboarding-language";
+import { R6Button } from "./R6Controls";
+
+const HOURS = Array.from({ length: 24 }, (_, value) =>
+  value.toString().padStart(2, "0"),
+);
+const MINUTES = Array.from({ length: 60 }, (_, value) =>
+  value.toString().padStart(2, "0"),
+);
+
+function splitTime(value: string): [string, string] {
+  const match = /^([01]\d|2[0-3]):([0-5]\d)$/.exec(value);
+  return match ? [match[1], match[2]] : ["00", "00"];
+}
+
+export function TimePicker({
+  id,
+  label,
+  value,
+  disabled = false,
+  onChange,
+}: {
+  id: string;
+  label: string;
+  value: string;
+  disabled?: boolean;
+  onChange(value: string): Promise<boolean>;
+}) {
+  const { locale, text } = useOnboardingTranslation();
+  const [open, setOpen] = useState(false);
+  const [saving, setSaving] = useState(false);
+  const [placement, setPlacement] = useState<"above" | "below">("above");
+  const [hour, setHour] = useState(() => splitTime(value)[0]);
+  const [minute, setMinute] = useState(() => splitTime(value)[1]);
+  const root = useRef<HTMLDivElement>(null);
+  const trigger = useRef<HTMLButtonElement>(null);
+  const panel = useRef<HTMLElement>(null);
+  const hourSelect = useRef<HTMLSelectElement>(null);
+  const minuteSelect = useRef<HTMLSelectElement>(null);
+  const restoreTriggerFocus = useRef(false);
+  const restoreSaveFocus = useRef(false);
+  const savingRef = useRef(false);
+  savingRef.current = saving;
+  const panelId = `${id}-picker`;
+
+  const close = useCallback((restoreFocus = true) => {
+    setOpen(false);
+    restoreTriggerFocus.current = restoreFocus;
+  }, []);
+
+  function show() {
+    const [nextHour, nextMinute] = splitTime(value);
+    setHour(nextHour);
+    setMinute(nextMinute);
+    setOpen(true);
+  }
+
+  useEffect(() => {
+    if (!open) return;
+    const closeOutside = (event: MouseEvent) => {
+      if (savingRef.current) return;
+      const target = event.target as Element | null;
+      const label = target?.closest("label");
+      if (label instanceof HTMLLabelElement && label.htmlFor === id) return;
+      if (!root.current?.contains(target)) close(false);
+    };
+    const closeOnEscape = (event: KeyboardEvent) => {
+      if (event.key !== "Escape" || savingRef.current) return;
+      event.preventDefault();
+      close();
+    };
+    document.addEventListener("mousedown", closeOutside);
+    document.addEventListener("keydown", closeOnEscape);
+    hourSelect.current?.focus();
+    hourSelect.current?.selectedOptions[0]?.scrollIntoView?.({
+      block: "nearest",
+    });
+    minuteSelect.current?.selectedOptions[0]?.scrollIntoView?.({
+      block: "nearest",
+    });
+    return () => {
+      document.removeEventListener("mousedown", closeOutside);
+      document.removeEventListener("keydown", closeOnEscape);
+    };
+  }, [close, id, open]);
+
+  useEffect(() => {
+    if (disabled && open && !saving) close(false);
+    if (!disabled && !open && restoreTriggerFocus.current) {
+      restoreTriggerFocus.current = false;
+      trigger.current?.focus();
+    }
+    if (!disabled && open && restoreSaveFocus.current) {
+      restoreSaveFocus.current = false;
+      panel.current
+        ?.querySelector<HTMLButtonElement>("[data-time-picker-save]")
+        ?.focus();
+    }
+    if (saving && open) panel.current?.focus();
+  }, [close, disabled, open, saving]);
+
+  useLayoutEffect(() => {
+    if (!open) return;
+    const place = () => {
+      const anchor = trigger.current?.getBoundingClientRect();
+      const picker = panel.current?.getBoundingClientRect();
+      if (!anchor || !picker) return;
+      const scroller = trigger.current?.closest(
+        ".app-content, .onboarding-frame",
+      );
+      const bounds = scroller?.getBoundingClientRect();
+      const topEdge = (bounds ? Math.max(0, bounds.top) : 0) + 12;
+      const bottomEdge =
+        (bounds
+          ? Math.min(window.innerHeight, bounds.bottom)
+          : window.innerHeight) - 12;
+      const above = anchor.top - topEdge;
+      const below = bottomEdge - anchor.bottom;
+      setPlacement(
+        above >= picker.height || above >= below ? "above" : "below",
+      );
+    };
+    place();
+    window.addEventListener("resize", place);
+    window.addEventListener("scroll", place, true);
+    return () => {
+      window.removeEventListener("resize", place);
+      window.removeEventListener("scroll", place, true);
+    };
+  }, [open]);
+
+  async function save() {
+    const next = `${hour}:${minute}`;
+    if (next === value) {
+      close();
+      return;
+    }
+    setSaving(true);
+    const saved = await onChange(next);
+    setSaving(false);
+    if (saved) close();
+    else restoreSaveFocus.current = true;
+  }
+
+  return (
+    <div className="r6-time-picker" ref={root}>
+      <button
+        ref={trigger}
+        id={id}
+        type="button"
+        className="r6-time-picker-trigger"
+        aria-label={
+          locale.startsWith("zh") ? `${label}，${value}` : `${label}: ${value}`
+        }
+        aria-haspopup="dialog"
+        aria-expanded={open}
+        aria-controls={panelId}
+        disabled={disabled}
+        onClick={() => (open ? close() : show())}
+      >
+        <span>{value}</span>
+        <span className="r6-time-picker-icons" aria-hidden="true">
+          <Clock3 size={15} />
+          <ChevronDown size={14} />
+        </span>
+      </button>
+      {open ? (
+        <section
+          ref={panel}
+          id={panelId}
+          className="r6-time-picker-panel"
+          role="dialog"
+          aria-modal="true"
+          aria-label={label}
+          tabIndex={-1}
+          data-placement={placement}
+          onKeyDown={(event) => {
+            if (event.key !== "Tab") return;
+            const controls = Array.from(
+              event.currentTarget.querySelectorAll<HTMLElement>(
+                "select:not(:disabled), button:not(:disabled)",
+              ),
+            );
+            const first = controls[0];
+            const last = controls.at(-1);
+            if (!first || !last) {
+              event.preventDefault();
+              event.currentTarget.focus();
+              return;
+            }
+            if (event.shiftKey && document.activeElement === first) {
+              event.preventDefault();
+              last.focus();
+            } else if (!event.shiftKey && document.activeElement === last) {
+              event.preventDefault();
+              first.focus();
+            }
+          }}
+        >
+          <div className="r6-time-picker-columns">
+            <label className="r6-time-picker-column">
+              <span aria-hidden="true">HH</span>
+              <select
+                ref={hourSelect}
+                size={6}
+                aria-label={`${label} HH`}
+                value={hour}
+                disabled={saving}
+                onChange={(event) => setHour(event.target.value)}
+              >
+                {HOURS.map((option) => (
+                  <option key={option} value={option}>
+                    {option}
+                  </option>
+                ))}
+              </select>
+            </label>
+            <span className="r6-time-picker-separator" aria-hidden="true">
+              :
+            </span>
+            <label className="r6-time-picker-column">
+              <span aria-hidden="true">MM</span>
+              <select
+                ref={minuteSelect}
+                size={6}
+                aria-label={`${label} MM`}
+                value={minute}
+                disabled={saving}
+                onChange={(event) => setMinute(event.target.value)}
+              >
+                {MINUTES.map((option) => (
+                  <option key={option} value={option}>
+                    {option}
+                  </option>
+                ))}
+              </select>
+            </label>
+          </div>
+          <footer>
+            <R6Button disabled={saving} onClick={() => close()}>
+              {text("取消")}
+            </R6Button>
+            <R6Button
+              variant="primary"
+              pending={saving}
+              data-time-picker-save
+              onClick={() => void save()}
+            >
+              <Check size={15} aria-hidden="true" />
+              {text("保存修改")}
+            </R6Button>
+          </footer>
+        </section>
+      ) : null}
+    </div>
+  );
+}
diff --git a/memhub/apps/web/src/r6-settings.css b/memhub/apps/web/src/r6-settings.css
index 38481e2..c3d77c7 100644
--- a/memhub/apps/web/src/r6-settings.css
+++ b/memhub/apps/web/src/r6-settings.css
@@ -295,7 +295,7 @@
   padding-top: 16px;
   border-top: 1px solid #e1e8ed;
 }
-.r6-settings .r6-evolve-time label {
+.r6-settings .r6-evolve-time > div > label {
   color: #304757;
   font-size: 13px;
   font-weight: 600;
@@ -304,20 +304,146 @@
 .r6-evolve-time p {
   margin-top: 1px;
 }
-.r6-evolve-settings input[type="time"] {
+.r6-time-picker {
+  position: relative;
+  width: 180px;
+}
+.r6-time-picker-trigger {
   box-sizing: border-box;
   width: 180px;
-  min-height: 44px;
-  padding: 0 10px;
+  height: 44px;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+  padding: 0 12px 0 14px;
   border: 1px solid #c6d2da;
   border-radius: 8px;
   color: #304757;
   background: #fff;
+  font:
+    500 14px / 22px "Noto Sans SC",
+    "PingFang SC",
+    sans-serif;
+  font-variant-numeric: tabular-nums;
+  cursor: pointer;
+  transition:
+    border-color 140ms ease-out,
+    background-color 140ms ease-out,
+    box-shadow 140ms ease-out;
 }
-.r6-evolve-settings input[type="time"]:focus-visible {
+.r6-time-picker-trigger:hover:not(:disabled) {
+  border-color: #9eafbb;
+  background: #f8fafb;
+}
+.r6-time-picker-trigger[aria-expanded="true"] {
+  border-color: #7892a6;
+  box-shadow: 0 0 0 3px rgb(85 124 147 / 12%);
+}
+.r6-time-picker-trigger:focus-visible {
   outline: 2px solid var(--r6-focus);
   outline-offset: 2px;
 }
+.r6-time-picker-trigger:disabled {
+  color: #71808b;
+  background: #edf0f3;
+  cursor: default;
+}
+.r6-time-picker-trigger:active:not(:disabled) {
+  transform: none;
+}
+.r6-time-picker-icons {
+  display: inline-flex;
+  align-items: center;
+  gap: 5px;
+  color: #607888;
+}
+.r6-time-picker-trigger[aria-expanded="true"]
+  .r6-time-picker-icons
+  svg:last-child {
+  transform: rotate(180deg);
+}
+.r6-time-picker-panel {
+  box-sizing: border-box;
+  position: absolute;
+  z-index: 1200;
+  right: 0;
+  bottom: calc(100% + 8px);
+  width: min(280px, calc(100vw - 32px));
+  padding: 14px;
+  border: 1px solid #c6d2da;
+  border-radius: 10px;
+  background: #fff;
+  box-shadow: 0 14px 36px rgb(48 71 87 / 16%);
+}
+.r6-time-picker-panel[data-placement="below"] {
+  top: calc(100% + 8px);
+  bottom: auto;
+}
+.r6-time-picker-columns {
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
+  align-items: end;
+  gap: 8px;
+}
+.r6-time-picker-column {
+  display: grid;
+  gap: 6px;
+  color: #5e6e7a;
+  font-size: 11px;
+  font-weight: 600;
+  line-height: 18px;
+  text-align: center;
+}
+.r6-time-picker-columns select {
+  box-sizing: border-box;
+  width: 100%;
+  height: 174px;
+  padding: 4px;
+  border: 1px solid #d5dfe8;
+  border-radius: 7px;
+  color: #304757;
+  background: #f8fafb;
+  font:
+    500 14px / 24px "Noto Sans SC",
+    "PingFang SC",
+    sans-serif;
+  font-variant-numeric: tabular-nums;
+  scrollbar-width: thin;
+  scrollbar-color: #b6c3cc transparent;
+}
+.r6-time-picker-columns select:focus-visible {
+  outline: 2px solid var(--r6-focus);
+  outline-offset: 1px;
+}
+.r6-time-picker-columns option {
+  min-height: 28px;
+  padding: 5px 8px;
+  border-radius: 5px;
+}
+.r6-time-picker-columns option:checked {
+  color: #304757;
+  background: #dfe9ef;
+}
+.r6-time-picker-separator {
+  align-self: center;
+  margin-top: 22px;
+  color: #7892a6;
+  font-size: 18px;
+  font-weight: 600;
+}
+.r6-time-picker-panel footer {
+  display: flex;
+  justify-content: flex-end;
+  gap: 8px;
+  margin-top: 12px;
+  padding-top: 12px;
+  border-top: 1px solid #e1e8ed;
+  flex-wrap: wrap;
+}
+.r6-time-picker-panel footer .r6-button {
+  min-width: 68px;
+}
 .r6-state-recovery {
   display: flex;
   align-items: center;
@@ -1059,9 +1185,14 @@
   .r6-evolve-time {
     gap: 8px;
   }
-  .r6-evolve-settings input[type="time"] {
+  .r6-time-picker,
+  .r6-time-picker-trigger {
     width: min(220px, 100%);
   }
+  .r6-time-picker-panel {
+    right: auto;
+    left: 0;
+  }
   .r6-state-recovery {
     align-items: flex-start;
     flex-direction: column;