diff --git a/src/lib/components/admin/DatePicker.svelte b/src/lib/components/admin/DatePicker.svelte
new file mode 100644
index 0000000..615bc00
--- /dev/null
+++ b/src/lib/components/admin/DatePicker.svelte
@@ -0,0 +1,272 @@
+<script lang="ts">
+	import { onMount } from 'svelte';
+
+	let {
+		value = $bindable(''),
+		name = '',
+		id = ''
+	} = $props<{ value?: string; name?: string; id?: string }>();
+
+	let isOpen = $state(false);
+
+	let displayDate = $state(new Date());
+
+	$effect(() => {
+		if (value) {
+			const parsed = new Date(value);
+			if (!isNaN(parsed.getTime())) {
+				displayDate = parsed;
+			}
+		} else {
+			displayDate = new Date();
+		}
+	});
+
+	let currentMonth = $state(displayDate.getMonth());
+	let currentYear = $state(displayDate.getFullYear());
+
+	let container: HTMLDivElement;
+
+	function handleOutsideClick(e: MouseEvent) {
+		if (isOpen && container && !container.contains(e.target as Node)) {
+			isOpen = false;
+		}
+	}
+
+	onMount(() => {
+		document.addEventListener('click', handleOutsideClick);
+		return () => document.removeEventListener('click', handleOutsideClick);
+	});
+
+	function prevMonth() {
+		if (currentMonth === 0) {
+			currentMonth = 11;
+			currentYear--;
+		} else {
+			currentMonth--;
+		}
+	}
+
+	function nextMonth() {
+		if (currentMonth === 11) {
+			currentMonth = 0;
+			currentYear++;
+		} else {
+			currentMonth++;
+		}
+	}
+
+	function selectDate(day: number) {
+		const monthStr = String(currentMonth + 1).padStart(2, '0');
+		const dayStr = String(day).padStart(2, '0');
+		value = `${currentYear}-${monthStr}-${dayStr}`;
+		isOpen = false;
+	}
+
+	let daysInMonth = $derived(new Date(currentYear, currentMonth + 1, 0).getDate());
+	let firstDayOfWeek = $derived(new Date(currentYear, currentMonth, 1).getDay()); // 0 is Sunday
+
+	const weekDays = ['日', '一', '二', '三', '四', '五', '六'];
+</script>
+
+<div class="date-picker-wrapper" bind:this={container}>
+	<div class="input-wrapper" aria-hidden="true" onclick={() => (isOpen = !isOpen)}>
+		<input type="text" {id} {name} {value} readonly placeholder="选择建站日期..." />
+		<span class="icon">
+			<svg
+				width="16"
+				height="16"
+				viewBox="0 0 24 24"
+				fill="none"
+				stroke="currentColor"
+				stroke-width="2"
+				stroke-linecap="round"
+				stroke-linejoin="round"
+			>
+				<rect x="3" y="4" width="18" height="18" rx="0" ry="0"></rect>
+				<line x1="16" y1="2" x2="16" y2="6"></line>
+				<line x1="8" y1="2" x2="8" y2="6"></line>
+				<line x1="3" y1="10" x2="21" y2="10"></line>
+			</svg>
+		</span>
+	</div>
+
+	{#if isOpen}
+		<div class="calendar-popup">
+			<div class="calendar-header">
+				<button type="button" class="nav-btn" onclick={prevMonth}>&lt;</button>
+				<span class="current-month">{currentYear}年 {currentMonth + 1}月</span>
+				<button type="button" class="nav-btn" onclick={nextMonth}>&gt;</button>
+			</div>
+
+			<div class="calendar-grid">
+				{#each weekDays as wd}
+					<div class="weekday">{wd}</div>
+				{/each}
+
+				{#each Array(firstDayOfWeek) as _}
+					<div class="empty-day"></div>
+				{/each}
+
+				{#each Array(daysInMonth) as _, i}
+					{@const day = i + 1}
+					{@const isSelected =
+						value ===
+						`${currentYear}-${String(currentMonth + 1).padStart(2, '0')}-${String(day).padStart(2, '0')}`}
+					{@const isToday =
+						new Date().getDate() === day &&
+						new Date().getMonth() === currentMonth &&
+						new Date().getFullYear() === currentYear}
+
+					<button
+						type="button"
+						class="day-btn"
+						class:selected={isSelected}
+						class:today={isToday && !isSelected}
+						onclick={() => selectDate(day)}
+					>
+						{day}
+					</button>
+				{/each}
+			</div>
+		</div>
+	{/if}
+</div>
+
+<style>
+	.date-picker-wrapper {
+		position: relative;
+		width: 100%;
+	}
+
+	.input-wrapper {
+		position: relative;
+		cursor: pointer;
+	}
+
+	.input-wrapper input {
+		width: 100%;
+		padding: 10px 14px;
+		padding-right: 35px; /* for icon */
+		border: 1px solid rgba(0, 0, 0, 0.15);
+		background: rgba(0, 0, 0, 0.02);
+		font-size: 1rem;
+		color: var(--text-color);
+		border-radius: 0;
+		transition: all 0.2s;
+		cursor: pointer;
+		box-sizing: border-box;
+	}
+
+	.input-wrapper:hover input {
+		border-color: var(--text-color);
+	}
+
+	.input-wrapper input:focus {
+		outline: none;
+		border-color: var(--accent-color, #419b38);
+		box-shadow: 0 0 0 2px rgba(65, 155, 56, 0.1);
+	}
+
+	.icon {
+		position: absolute;
+		right: 12px;
+		top: 50%;
+		transform: translateY(-50%);
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		color: rgba(0, 0, 0, 0.5);
+		pointer-events: none;
+	}
+
+	.calendar-popup {
+		position: absolute;
+		top: calc(100% + 5px);
+		left: 0;
+		z-index: 100;
+		width: 280px;
+		background: var(--bg-color, #fff);
+		border: 2px solid var(--text-color);
+		box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.1);
+		padding: 15px;
+	}
+
+	.calendar-header {
+		display: flex;
+		justify-content: space-between;
+		align-items: center;
+		margin-bottom: 15px;
+	}
+
+	.current-month {
+		font-weight: 600;
+		font-size: 1.05rem;
+		color: var(--text-color);
+	}
+
+	.nav-btn {
+		background: transparent;
+		border: 1px solid rgba(0, 0, 0, 0.15);
+		color: var(--text-color);
+		width: 30px;
+		height: 30px;
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		cursor: pointer;
+		font-weight: bold;
+		transition: all 0.2s;
+	}
+
+	.nav-btn:hover {
+		border-color: var(--text-color);
+		background: rgba(0, 0, 0, 0.05);
+	}
+
+	.calendar-grid {
+		display: grid;
+		grid-template-columns: repeat(7, 1fr);
+		gap: 5px;
+		text-align: center;
+	}
+
+	.weekday {
+		font-size: 0.8rem;
+		font-weight: 600;
+		color: var(--text-muted, rgba(0, 0, 0, 0.5));
+		margin-bottom: 5px;
+	}
+
+	.day-btn {
+		background: transparent;
+		border: 1px solid transparent;
+		color: var(--text-color);
+		width: 100%;
+		aspect-ratio: 1;
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		cursor: pointer;
+		font-size: 0.9rem;
+		transition: all 0.2s;
+		padding: 0;
+	}
+
+	.day-btn:hover:not(.selected) {
+		background: rgba(0, 0, 0, 0.05);
+		border-color: rgba(0, 0, 0, 0.15);
+	}
+
+	.day-btn.today {
+		border-color: var(--text-color);
+		font-weight: bold;
+	}
+
+	.day-btn.selected {
+		background: var(--text-color);
+		color: var(--bg-color, #fff);
+		border-color: var(--text-color);
+		font-weight: bold;
+	}
+</style>
diff --git a/src/routes/admin/settings/+page.svelte b/src/routes/admin/settings/+page.svelte
index e3e5247..0f674ab 100644
--- a/src/routes/admin/settings/+page.svelte
+++ b/src/routes/admin/settings/+page.svelte
@@ -4,6 +4,7 @@
 	import { addToast } from '$lib/stores/toast.svelte';
 	import Tabs from '$lib/components/admin/Tabs.svelte';
 	import ImagePicker from '$lib/components/admin/FeaturedImagePicker.svelte';
+	import DatePicker from '$lib/components/admin/DatePicker.svelte';
 	import { untrack } from 'svelte';
 
 	let { data, form }: { data: PageData; form: ActionData } = $props();
@@ -87,11 +88,10 @@
 					</div>
 					<div class="form-group">
 						<label for="site_launch_date">建站日期</label>
-						<input
-							type="date"
+						<DatePicker
 							id="site_launch_date"
 							name="site_launch_date"
-							value={data.settings['site.launch_date'] || ''}
+							bind:value={data.settings['site.launch_date']}
 						/>
 						<small class="form-hint">用于在底栏显示"感谢陪伴 X 天 X 小时"</small>
 					</div>
@@ -389,22 +389,6 @@
 		box-shadow: 0 0 0 2px rgba(65, 155, 56, 0.1);
 	}
 
-	/* 抹除浏览器原生日期选择器的特殊样式，保持与项目其他输入框一致 */
-	.form-group input[type='date'] {
-		appearance: none;
-		-webkit-appearance: none;
-		width: 100%;
-		box-sizing: border-box;
-		color-scheme: light;
-	}
-
-	.form-group input[type='date']::-webkit-calendar-picker-indicator {
-		filter: invert(0.4);
-		cursor: pointer;
-		padding: 0;
-		margin-left: 4px;
-	}
-
 	.form-actions {
 		margin-top: 10px;
 		display: flex;