style(比赛/题单/班级PK/统计): 图例和规则说明跟排名页一样多，读起来像说明书

比赛排名表底下的图例和用时规则、比赛题目页的「做对人数随时更新」和计分规则、
老师比赛班级页的「学生看不到这一页 · 15 秒刷新一次」和键盘提示；
题单详情的「加入以后…才算进度」「做对一道会自动回到这里」、题单列表的
「老师现在布置的」「加入过的在前」、老师题单进度表底部的颜色说明；
班级 PK 里「格子里是…」「条 = …」「皇冠 = …」「一根柱一档…」「这学期，最近 N 周」、
只有一个班做过的题那行、「根据上面这些数字写，仅供参考」；
统计里「没选班级，先按班级列出来…」「点方块在新页面打开这一条」；
流程图节点库的「拖拽节点到画布中」，都拿掉。

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/web/src/oj/class/components/PkDuel.vue

@@ -70,19 +70,6 @@ const steadier = computed(() => {
   return `${nameOf(firstLeft > firstRight ? 0 : 1)}更稳`
 })
 
-/** 只有一个班布置过的题：不比，列几道名字 */
-const soloText = computed(() => {
-  const { solo } = props.pk
-  if (!solo.length) return ""
-  const names = solo.slice(0, 2).map((item) => `「${item.title}」`)
-  const owners = new Set(solo.map((item) => item.className))
-  const who =
-    owners.size === 1
-      ? `只有${nameOf(props.pk.classes.findIndex((item) => item.className === solo[0]!.className))}做过的`
-      : "只有一个班做过的"
-  return `${who} ${solo.length} 道不比：${names.join("、")}${solo.length > 2 ? " 等" : ""}`
-})
-
 const SHOW_MOBILE = 7
 const expanded = ref(false)
 const shownRows = computed(() =>
@@ -136,7 +123,7 @@ const tab = ref<"weekly" | "dist">("weekly")
         </span>
       </div>
       <div class="mid">
-        <span class="muted">两个班都做过的 {{ rows.length }} 道题 · 谁做对的人多谁赢这道</span>
+        <span class="muted">{{ rows.length }} 道题</span>
         <span class="big">
           <b :style="{ color: colors[0] }">{{ score.left }}</b>
           <i>:</i>
@@ -154,13 +141,6 @@ const tab = ref<"weekly" | "dist">("weekly")
     <div class="card">
       <div class="card-head">
         <b>同一批题</b>
-        <span class="muted">
-          条 = 全班做对的人占几成<template v-if="!compact">
-            · 皇冠 = 这道赢了 · 按两班差距从大到小</template
-          >
-        </span>
-        <div class="spacer" />
-        <span v-if="soloText && !compact" class="muted">{{ soloText }}</span>
       </div>
 
       <template v-if="!compact">
@@ -288,7 +268,7 @@ const tab = ref<"weekly" | "dist">("weekly")
       </div>
       <div v-if="!compact || tab === 'weekly'" class="card pad">
         <div v-if="!compact" class="card-title">
-          <b>每周人均新做对</b><span class="muted">这学期，最近 {{ weeks.list.length }} 周</span>
+          <b>每周人均新做对</b>
         </div>
         <div class="weeks">
           <div v-for="week in weeks.list" :key="week.label" class="week">
@@ -310,7 +290,7 @@ const tab = ref<"weekly" | "dist">("weekly")
       </div>
       <div v-if="!compact || tab === 'dist'" class="card pad dist">
         <div v-if="!compact" class="card-title">
-          <b>全班分布</b><span class="muted">一根柱一档，横轴是做对几道 · 虚线是中间那位</span>
+          <b>全班分布</b>
         </div>
         <div v-for="(item, index) in [left, right]" :key="item.className" class="dist-one">
           <span class="dist-name" :style="{ color: colors[index] }">
@@ -451,10 +431,6 @@ const tab = ref<"weekly" | "dist">("weekly")
   margin-bottom: 8px;
 }
 
-.spacer {
-  flex-grow: 1;
-}
-
 .row {
   min-height: 52px;
   display: grid;

apps/web/src/oj/class/components/PkGrid.vue

@@ -90,7 +90,6 @@ const expanded = ref(false)
 const shownRows = computed(() =>
   props.compact && !expanded.value ? rows.value.slice(0, SHOW_MOBILE) : rows.value,
 )
-const soloCount = computed(() => props.pk.solo.length)
 
 const tab = ref<"race" | "lead">("race")
 const medal = (index: number) => palette.value.medal[index]
@@ -101,14 +100,9 @@ const medal = (index: number) => palette.value.medal[index]
     <div class="card table">
       <div class="card-title">
         <b>同一批题 · 一格一个班</b>
-        <span class="muted">
-          格子里是全班做对的人占几成，越深越多<template v-if="!compact">
-            · 皇冠 = 这道题做得最好的班（一样多就都算）</template
-          >
-        </span>
       </div>
       <div class="line heads">
-        <span v-if="!compact" class="name muted">至少两个班布置过的 {{ rows.length }} 道</span>
+        <span v-if="!compact" class="name muted">{{ rows.length }} 道</span>
         <span
           v-for="(item, index) in pk.classes"
           :key="item.className"
@@ -173,9 +167,6 @@ const medal = (index: number) => palette.value.medal[index]
       >
         {{ expanded ? "收起" : `再看 ${rows.length - SHOW_MOBILE} 道 ›` }}
       </button>
-      <span v-if="!compact && soloCount" class="muted foot">
-        只有一个班做过的 {{ soloCount }} 道不在格子里 · 鼠标放到格子上看做对几个人、交了几次
-      </span>
     </div>
 
     <div class="side" :class="{ compact }">
@@ -459,10 +450,6 @@ const medal = (index: number) => palette.value.medal[index]
   padding: 0 5px;
 }
 
-.foot {
-  padding-top: 4px;
-}
-
 .side {
   flex: 1;
   min-width: 0;

apps/web/src/oj/class/pk.vue

@@ -289,7 +289,6 @@ async function analyze() {
               <path d="M12 3l1.8 4.7L18.5 9.5l-4.7 1.8L12 16l-1.8-4.7L5.5 9.5l4.7-1.8z" />
             </svg>
             <b>AI 分析</b>
-            <span class="muted">根据上面这些数字写，仅供参考</span>
             <div class="spacer" />
             <n-button size="small" :loading="ai.running.value" @click="analyze">重新分析</n-button>
           </div>

apps/web/src/oj/contest/pages/class.vue

@@ -358,8 +358,6 @@ const gradeColumns = computed(() => `24px 124px 40px 36px repeat(${problems.valu
         <b class="amber">{{ idleCount }}</b
         ><span>{{ IDLE_MINUTES }} 分钟以上没交</span>
       </div>
-      <div class="spacer"></div>
-      <span class="muted small">学生看不到这一页 · 15 秒刷新一次</span>
     </div>
 
     <div class="grid-wrap">
@@ -594,8 +592,6 @@ const gradeColumns = computed(() => `24px 124px 40px 36px repeat(${problems.valu
             <span v-if="code" class="muted tiny">
               {{ code.language }} · {{ parseTime(code.createTime, "M月D日 HH:mm:ss") }}
             </span>
-            <div class="spacer"></div>
-            <span class="muted tiny">点格子换人换题 · ← → ↑ ↓ 也行 · 看过的格子右上角有个点</span>
           </div>
         </template>
         <div v-else class="code-empty muted">

apps/web/src/oj/contest/pages/problems.vue

@@ -131,8 +131,6 @@ const warning = computed(() => tone("warning"))
             · 你做对 {{ solvedCount }} 道</template
           >
         </span>
-        <div class="spacer"></div>
-        <span v-if="running && !contestStore.rankHidden" class="muted small">做对人数随时更新</span>
       </div>
       <RouterLink
         v-for="item in items"
@@ -254,9 +252,6 @@ const warning = computed(() => tone("warning"))
           <RankMini :rows="rows" :me="me?.userId" />
           <div v-if="!rows.length" class="muted small empty">还没有人交题</div>
         </div>
-        <div class="muted small rule">
-          先比做对几道；一样多的，比用时：每道题做对时是第几分钟，加起来；错一次多算 20 分钟。
-        </div>
       </template>
     </aside>
   </div>
@@ -533,11 +528,6 @@ const warning = computed(() => tone("warning"))
   padding: 8px 2px;
 }
 
-.rule {
-  line-height: 1.6;
-  font-size: var(--oj-fs-meta);
-}
-
 /* 手机：题目名要留得下，人数和「最先」只在右边的排名里看 */
 @media (max-width: 760px) {
   .count,

apps/web/src/oj/contest/pages/rank.vue

@@ -237,14 +237,6 @@ const columns = computed(
       </div>
       <div v-if="!rows.length" class="empty muted">还没有人交题</div>
     </div>
-
-    <div class="legend">
-      <span><i class="sw first"></i>这题最先做对</span>
-      <span><i class="sw ac"></i>做对，格子里是第几分钟（-1 是错过 1 次）</span>
-      <span><i class="sw no"></i>还没对，错了几次</span>
-      <div class="spacer"></div>
-      <span>用时 = 每道做对题的分钟数相加，错一次多算 20 分钟</span>
-    </div>
   </div>
 </template>
 
@@ -542,41 +534,4 @@ const columns = computed(
 .empty {
   padding: 32px var(--oj-pad-x);
 }
-
-.legend {
-  min-height: 42px;
-  padding: 8px var(--oj-pad-x);
-  box-sizing: border-box;
-  display: flex;
-  align-items: center;
-  flex-wrap: wrap;
-  gap: 16px;
-  font-size: var(--oj-fs-meta);
-  color: v-bind("theme.textColor3");
-  border-top: 1px solid v-bind("theme.dividerColor");
-}
-
-.legend span {
-  display: flex;
-  align-items: center;
-  gap: 6px;
-}
-
-.sw {
-  width: 28px;
-  height: 16px;
-  border-radius: 3px;
-}
-
-.sw.first {
-  background: v-bind("theme.successColor");
-}
-
-.sw.ac {
-  background: v-bind("success.background");
-}
-
-.sw.no {
-  background: v-bind("danger.background");
-}
 </style>

apps/web/src/oj/problemset/components/ClassView.vue

@@ -150,12 +150,6 @@ const error = computed(() => tone("error"))
           </template>
         </div>
       </div>
-      <div class="foot muted">
-        <span>绿 = 在题单里做对（几点做对的）</span><span>黄 = 交过还没对</span
-        ><span>紫色角 = 加入前就做对过</span><span>点格子看这个学生这道题的提交</span>
-        <div class="spacer"></div>
-        <span>按学号排</span>
-      </div>
     </template>
     <div v-else class="empty"><n-spin size="small" /></div>
   </section>
@@ -303,18 +297,6 @@ const error = computed(() => tone("error"))
   border-left: 8px solid transparent;
 }
 
-.foot {
-  min-height: 36px;
-  box-sizing: border-box;
-  padding: 8px 20px;
-  display: flex;
-  align-items: center;
-  flex-wrap: wrap;
-  gap: 4px 16px;
-  font-size: var(--oj-fs-meta);
-  border-top: 1px solid v-bind("theme.dividerColor");
-}
-
 .spacer {
   flex-grow: 1;
 }

apps/web/src/oj/problemset/detail.vue

@@ -193,7 +193,6 @@ const purple = { color: "#5b3fa8", background: "rgba(122, 95, 208, 0.12)" }
         <n-button type="primary" size="large" :loading="joining" @click="join">
           加入题单，开始做
         </n-button>
-        <span class="muted tiny">加入以后，在题单里做对的题才算进度</span>
       </div>
     </section>
 
@@ -285,7 +284,6 @@ const purple = { color: "#5b3fa8", background: "rgba(122, 95, 208, 0.12)" }
         </section>
       </div>
       <n-empty v-else description="这个题单还没有题目" />
-      <div v-if="joined && problems.length" class="muted tiny foot">做对一道会自动回到这里</div>
     </template>
   </div>
 </template>
@@ -578,10 +576,6 @@ a.prow:hover {
   flex-shrink: 0;
 }
 
-.foot {
-  text-align: center;
-}
-
 .pill {
   height: 24px;
   padding: 0 9px;

apps/web/src/oj/problemset/list.vue

@@ -55,7 +55,6 @@ const others = computed(() =>
       return Date.parse(b.createTime) - Date.parse(a.createTime)
     }),
 )
-const joinedOthers = computed(() => others.value.filter((set) => set.userProgress.isJoined).length)
 
 function description(set: ProblemSet) {
   // 简介大多就是把标题再抄一遍，一样的就不重复显示
@@ -93,7 +92,7 @@ const doneBackground = computed(() => rgba(theme.value.successColor, 0.05))
 
     <template v-if="assigning.length">
       <div class="sect">
-        布置中<span class="muted">老师现在布置的 · {{ assigning.length }} 个</span>
+        布置中<span class="muted">{{ assigning.length }} 个</span>
       </div>
       <div class="big-grid">
         <a
@@ -146,9 +145,7 @@ const doneBackground = computed(() => rgba(theme.value.successColor, 0.05))
 
     <div v-if="others.length" class="sect">
       {{ assigning.length ? "其他题单" : "题单" }}
-      <span class="muted"
-        >{{ others.length }} 个<template v-if="joinedOthers"> · 加入过的在前</template></span
-      >
+      <span class="muted">{{ others.length }} 个</span>
     </div>
     <div class="small-grid">
       <a

apps/web/src/oj/statistics/components/AttemptSquares.vue

@@ -110,7 +110,6 @@ const cells = computed(() =>
         />
         <span v-else-if="code[cell.id] === 'failed'" class="muted">代码没拉下来，点方块打开看</span>
         <span v-else class="muted">代码加载中…</span>
-        <span class="muted small">点方块在新页面打开这一条</span>
       </div>
     </n-popover>
   </span>
@@ -159,8 +158,4 @@ const cells = computed(() =>
 .muted {
   opacity: 0.65;
 }
-
-.small {
-  font-size: 12px;
-}
 </style>

apps/web/src/oj/statistics/components/ByClass.vue

@@ -109,7 +109,6 @@ const classes = computed(() => {
       <p v-if="grid.truncated" class="note warn" :style="{ color: tone('warning').color }">
         范围太大，只取了最近的 5000 条提交，更早的班级可能少算或不在表里。缩短时间段就准了。
       </p>
-      <p class="note">没选班级，先按班级列出来；点一个班再看每个人。「做完」是这几道题都做对了。</p>
     </div>
   </div>
 </template>

apps/web/src/shared/components/FlowchartEditor/Toolbar.vue

@@ -85,7 +85,6 @@ const saveStatusTitle = computed(() => {
           <span v-else>✔</span>
         </div>
       </div>
-      <p class="description">拖拽节点到画布中</p>
     </div>
 
     <!-- 节点列表 -->
@@ -167,7 +166,6 @@ const saveStatusTitle = computed(() => {
   display: flex;
   align-items: center;
   justify-content: space-between;
-  margin-bottom: 6px;
 }
 
 .toolbar-header h3 {
@@ -231,12 +229,6 @@ const saveStatusTitle = computed(() => {
   }
 }
 
-.description {
-  margin: 0;
-  font-size: 12px;
-  color: #6b7280;
-}
-
 /* 节点列表样式 */
 .nodes {
   display: flex;