2026-02-03 01:46:03 +08:00
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<script setup>
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2026-02-03 19:41:14 +08:00
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import { ref, computed } from 'vue'
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const round = ref(1)
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const maxRound = 20
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const windowLimit = 4000
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// 模拟数据配置
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const systemPromptTokens = 1000
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const tokensPerRound = 300
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const costPer1kTokens = 0.002
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// 计算属性
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const historyTokens = computed(() => (round.value - 1) * tokensPerRound)
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const currentInputTokens = 200
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const totalTokens = computed(() => systemPromptTokens + historyTokens.value + currentInputTokens)
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// 是否溢出
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const isOverflow = computed(() => totalTokens.value > windowLimit)
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const overflowAmount = computed(() => Math.max(0, totalTokens.value - windowLimit))
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const forgottenRounds = computed(() => Math.floor(overflowAmount.value / tokensPerRound))
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// 成本计算
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const currentCost = computed(() => (totalTokens.value / 1000 * costPer1kTokens).toFixed(4))
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// 高度计算 (相对于 windowLimit)
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const systemHeight = computed(() => (systemPromptTokens / windowLimit) * 100)
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const inputHeight = computed(() => (currentInputTokens / windowLimit) * 100)
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// History 高度展示逻辑:
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// 我们希望展示“总高度”,即使超过 100%。
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// 父容器会限制显示区域,溢出部分通过视觉暗示。
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const historyHeight = computed(() => (historyTokens.value / windowLimit) * 100)
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const totalHeight = computed(() => systemHeight.value + historyHeight.value + inputHeight.value)
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</script>
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<template>
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<div class="agent-context-flow">
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<!-- 1. 顶部统计栏 -->
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<div class="control-panel">
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<div class="stat-group">
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<div class="stat-item">
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<span class="value">{{ round }}</span>
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<span class="label">当前轮次</span>
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</div>
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<div class="stat-divider"></div>
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<div class="stat-item">
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<span class="value" :class="{ error: isOverflow }">{{ totalTokens }}</span>
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<span class="label">Token 占用</span>
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</div>
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<div class="stat-divider"></div>
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<div class="stat-item">
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<span class="value">${{ currentCost }}</span>
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<span class="label">本轮成本</span>
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</div>
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</div>
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</div>
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<!-- 2. 可视化区域 -->
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<div class="visualization-area">
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<!-- 上方预留空间给溢出提示 -->
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<div class="overflow-zone">
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<transition name="fade">
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<div v-if="isOverflow" class="overflow-badge">
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<span class="icon">🗑️</span>
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<span>溢出截断:前 {{ forgottenRounds }} 轮对话已被遗忘!</span>
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</div>
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<div v-else class="safe-badge">
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<span class="icon">✅</span>
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<span>记忆完整</span>
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</div>
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</transition>
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</div>
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<!-- 窗口容器 -->
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<div class="window-frame">
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<div class="limit-line">
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<span>Context Window Limit ({{ windowLimit }})</span>
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</div>
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<!-- 堆叠内容容器 -->
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<!-- 使用 flex-direction: column-reverse 让底部对齐 -->
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<div class="stack-container">
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<!-- System (基座) -->
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<div class="block system" :style="{ height: `${systemHeight}%` }">
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<span class="block-text">System Prompt ({{ systemPromptTokens }})</span>
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</div>
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<!-- History (中间) -->
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<div class="block history" :style="{ height: `${historyHeight}%` }">
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<span class="block-text" v-if="historyHeight > 10">
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History ({{ round - 1 }} rounds)
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</span>
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<!-- 溢出遮罩:当溢出时,History 的底部实际上是被“挤出去”的 -->
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<!-- 但为了可视化简单,我们让顶部溢出。或者,我们让整个 stack 向上移动? -->
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<!-- 修正逻辑:Context Window 只有那么大。内容是先进先出。 -->
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<!-- 所以 System 永远在。History 的旧内容被挤出。New 在最上。 -->
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<!-- 这里的可视化:如果不溢出,自底向上堆叠。 -->
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<!-- 如果溢出,System 在底,New 在顶,History 中间部分被挤压/溢出? -->
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<!-- 不,真实的 LLM 是滑动窗口。System 通常是 Pinned。 -->
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<!-- 让我们展示“总量”超过“窗口”。 -->
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</div>
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<!-- Input (最新) -->
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<div class="block input" :style="{ height: `${inputHeight}%` }">
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<span class="block-text">New Input</span>
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</div>
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</div>
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<!-- 溢出遮罩层:如果 totalHeight > 100%,显示一个红色的遮罩在顶部,表示这部分虽然生成了但塞不进去/或者旧的被挤走了 -->
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<!-- 为了简化,我们让 stack-container 的高度允许超过 100%,然后 window-frame overflow: hidden -->
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<!-- 但这样用户看不到溢出了多少。 -->
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<!-- 更好的方式:window-frame 是视口。stack-container 绝对定位。 -->
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</div>
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</div>
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<!-- 3. 底部控制 -->
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<div class="input-section">
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<div class="slider-wrapper">
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<span class="slider-hint">拖动滑块增加对话轮次:</span>
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<input
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type="range"
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min="1"
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:max="maxRound"
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v-model.number="round"
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class="custom-slider"
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/>
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<div class="slider-labels">
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<span>第 1 轮</span>
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<span>第 {{ maxRound }} 轮</span>
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</div>
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</div>
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<div class="info-box">
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<p v-if="!isOverflow">
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💡 <strong>一切正常</strong>:当前 Token 数 ({{ totalTokens }}) 未超过窗口限制。模型能完美回忆起所有对话细节。
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</p>
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<p v-else class="warning-text">
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⚠️ <strong>发生遗忘</strong>:Token 总量 ({{ totalTokens }}) 已超过窗口限制 ({{ windowLimit }})。
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为了放入新对话,系统被迫丢弃了最早的 <strong>{{ forgottenRounds }}</strong> 轮历史记录。
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</p>
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</div>
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</div>
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</div>
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</template>
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<style scoped>
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.agent-context-flow {
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border: 1px solid var(--vp-c-divider);
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border-radius: 6px;
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background-color: var(--vp-c-bg-soft);
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overflow: hidden;
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margin: 0.5rem 0;
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}
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/* 1. 顶部统计栏 */
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.control-panel {
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padding: 1.25rem;
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background: var(--vp-c-bg);
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border-bottom: 1px solid var(--vp-c-divider);
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}
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.stat-group {
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display: flex;
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justify-content: space-around;
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align-items: center;
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}
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.stat-item {
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display: flex;
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flex-direction: column;
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align-items: center;
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gap: 0.25rem;
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}
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.stat-item .value {
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font-size: 1.5rem;
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font-weight: 700;
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color: var(--vp-c-text-1);
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font-family: var(--vp-font-family-mono);
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}
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.stat-item .value.error {
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color: var(--vp-c-red);
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}
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.stat-item .label {
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font-size: 0.875rem;
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color: var(--vp-c-text-2);
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}
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.stat-divider {
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width: 1px;
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height: 2rem;
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background-color: var(--vp-c-divider);
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}
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/* 2. 可视化区域 */
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.visualization-area {
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padding: 1rem 2rem;
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background-color: var(--vp-c-bg-alt); /* 稍微深一点的背景 */
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display: flex;
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flex-direction: column;
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align-items: center;
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gap: 0.5rem;
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}
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.overflow-zone {
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height: 2rem;
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.overflow-badge {
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color: var(--vp-c-red);
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font-weight: 600;
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font-size: 0.9rem;
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display: flex;
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align-items: center;
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gap: 0.5rem;
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background: var(--vp-c-red-dimm);
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padding: 0.25rem 0.75rem;
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border-radius: 4px;
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}
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.safe-badge {
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color: var(--vp-c-green);
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font-size: 0.9rem;
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display: flex;
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align-items: center;
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gap: 0.5rem;
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}
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.window-frame {
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width: 100%;
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max-width: 300px; /* 限制宽度,像手机屏幕 */
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height: 300px;
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border: 2px solid var(--vp-c-divider);
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border-top: 2px dashed var(--vp-c-red); /* 顶部虚线表示 Limit */
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border-radius: 0 0 8px 8px;
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background: var(--vp-c-bg);
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position: relative;
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display: flex;
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flex-direction: column-reverse; /* 底部对齐 */
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overflow: visible; /* 允许溢出显示 */
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}
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.limit-line {
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position: absolute;
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top: -12px;
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left: 0;
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right: 0;
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display: flex;
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justify-content: center;
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2026-01-15 20:10:19 +08:00
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}
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2026-02-06 03:34:50 +08:00
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.limit-line span {
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background: var(--vp-c-red);
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color: white;
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font-size: 0.75rem;
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padding: 0 8px;
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border-radius: 10px;
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2026-01-15 20:10:19 +08:00
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}
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2026-02-06 03:34:50 +08:00
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.stack-container {
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width: 100%;
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height: 100%;
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display: flex;
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flex-direction: column-reverse; /* 让 System 在最底 */
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/* 这里不设 overflow: hidden,让它自然溢出,但是我们通过高度控制 */
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2026-01-15 20:10:19 +08:00
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}
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2026-02-06 03:34:50 +08:00
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.block {
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width: 100%;
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display: flex;
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align-items: center;
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justify-content: center;
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color: white;
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font-size: 0.8rem;
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font-weight: 500;
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transition: all 0.3s ease;
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position: relative;
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border-top: 1px solid rgba(255,255,255,0.1);
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2026-01-15 20:10:19 +08:00
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}
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2026-02-06 03:34:50 +08:00
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.block-text {
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z-index: 1;
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text-shadow: 0 1px 2px rgba(0,0,0,0.2);
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}
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.block.system {
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background-color: #10b981; /* Green */
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flex-shrink: 0; /* System 不会被压缩 */
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}
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.block.history {
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background-color: #3b82f6; /* Blue */
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/* 溢出逻辑:当高度增加时,history 会向上顶 */
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}
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.block.input {
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|
background-color: #f59e0b; /* Amber */
|
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flex-shrink: 0;
|
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}
|
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|
/* 溢出样式处理 */
|
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|
/* 当总高度超过 100% 时,stack-container 会溢出 window-frame */
|
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|
/* 我们希望溢出的部分变红或者虚化 */
|
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|
/* 3. 底部控制 */
|
|
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|
|
.input-section {
|
|
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|
|
padding: 1.25rem;
|
2026-02-03 19:41:14 +08:00
|
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|
|
background: var(--vp-c-bg);
|
2026-02-06 03:34:50 +08:00
|
|
|
|
border-top: 1px solid var(--vp-c-divider);
|
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|
|
display: flex;
|
|
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|
|
flex-direction: column;
|
|
|
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|
|
gap: 1rem;
|
2026-01-15 20:10:19 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2026-02-06 03:34:50 +08:00
|
|
|
|
.slider-wrapper {
|
|
|
|
|
|
display: flex;
|
|
|
|
|
|
flex-direction: column;
|
|
|
|
|
|
gap: 0.5rem;
|
2026-01-15 20:10:19 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2026-02-06 03:34:50 +08:00
|
|
|
|
.slider-hint {
|
|
|
|
|
|
font-size: 0.9rem;
|
2026-02-03 19:41:14 +08:00
|
|
|
|
font-weight: 600;
|
2026-01-15 20:10:19 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2026-02-06 03:34:50 +08:00
|
|
|
|
.custom-slider {
|
|
|
|
|
|
width: 100%;
|
|
|
|
|
|
accent-color: var(--vp-c-brand);
|
|
|
|
|
|
cursor: pointer;
|
2026-01-15 20:10:19 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2026-02-06 03:34:50 +08:00
|
|
|
|
.slider-labels {
|
|
|
|
|
|
display: flex;
|
|
|
|
|
|
justify-content: space-between;
|
2026-02-03 19:41:14 +08:00
|
|
|
|
font-size: 0.8rem;
|
|
|
|
|
|
color: var(--vp-c-text-2);
|
2026-02-06 03:34:50 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
.info-box {
|
|
|
|
|
|
padding: 0.75rem;
|
|
|
|
|
|
background: var(--vp-c-bg-soft);
|
2026-02-03 19:41:14 +08:00
|
|
|
|
border-radius: 6px;
|
2026-02-06 03:34:50 +08:00
|
|
|
|
font-size: 0.9rem;
|
|
|
|
|
|
line-height: 1.5;
|
|
|
|
|
|
color: var(--vp-c-text-2);
|
2026-01-15 20:10:19 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2026-02-06 03:34:50 +08:00
|
|
|
|
.info-box p {
|
|
|
|
|
|
margin: 0;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
.warning-text {
|
|
|
|
|
|
color: var(--vp-c-red-text);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* 移动端适配 */
|
|
|
|
|
|
@media (max-width: 640px) {
|
|
|
|
|
|
.stat-group {
|
|
|
|
|
|
gap: 0.5rem;
|
|
|
|
|
|
}
|
|
|
|
|
|
.stat-item .value {
|
|
|
|
|
|
font-size: 1.2rem;
|
|
|
|
|
|
}
|
|
|
|
|
|
.window-frame {
|
|
|
|
|
|
height: 250px;
|
2026-02-03 01:46:03 +08:00
|
|
|
|
}
|
2026-01-15 20:10:19 +08:00
|
|
|
|
}
|
2026-02-06 03:34:50 +08:00
|
|
|
|
</style>
|