From 02e2fa7d9bd8223524a2f6246b7fca5804b9ad3c Mon Sep 17 00:00:00 2001
From: yuetsh <517252939@qq.com>
Date: Fri, 16 Oct 2026 11:21:58 +0800
Subject: [PATCH] =?UTF-8?q?feat(=E5=90=8E=E5=8F=B0):=20=E6=89=8B=E6=9C=BA?=
 =?UTF-8?q?=E4=B8=8A=E4=B9=9F=E8=83=BD=E7=94=A8=E4=BA=86=E2=80=94=E2=80=94?=
 =?UTF-8?q?=E8=8F=9C=E5=8D=95=E6=94=B6=E8=BF=9B=E5=B7=A6=E8=BE=B9=E6=8A=BD?=
 =?UTF-8?q?=E5=B1=89=EF=BC=8C=E5=88=97=E8=A1=A8=E4=B8=80=E8=A1=8C=E4=B8=80?=
 =?UTF-8?q?=E5=BC=A0=E5=8D=A1=EF=BC=8C=E4=B8=8D=E7=94=A8=E5=86=8D=E6=A8=AA?=
 =?UTF-8?q?=E7=9D=80=E6=BB=91?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- 侧栏手机上不再占一列图标，顶栏左边 ☰ 拉出整张菜单，按返回键先关菜单
- 题目、比赛、用户、公告、题单列表手机上一项一张卡：名字一行、小字一行、按钮一行，
  「学生看得到」开关单独一列靠右
- 卡点分析、AI 报告手机上点开一项整屏看，返回键关掉；年度趋势、自学情况、首页改成上下排
- 出题页、教程编辑、题单编辑、标签、设置手机上排成一列；测试数据「删掉」手机上常驻
- 弹框一律收进屏幕宽度

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 .../components/AchievementModal.vue           |   7 +-
 apps/web/src/admin/achievement/list.vue       |  28 +++
 apps/web/src/admin/ai/list.vue                |  78 +++++++-
 apps/web/src/admin/announcement/list.vue      | 109 ++++++++---
 apps/web/src/admin/components/PageHeader.vue  |   2 +
 .../src/admin/contest/components/Actions.vue  |   5 +-
 apps/web/src/admin/contest/list.vue           | 117 ++++++++---
 apps/web/src/admin/learn/ExerciseAttempts.vue |  53 ++++-
 apps/web/src/admin/learn/index.vue            |  65 ++++++-
 apps/web/src/admin/problem/SqlDetail.vue      |  17 ++
 apps/web/src/admin/problem/Stuck.vue          | 183 ++++++++++++++++--
 apps/web/src/admin/problem/Trend.vue          |  84 +++++++-
 .../src/admin/problem/components/Actions.vue  |  13 +-
 .../admin/problem/components/CaseTable.vue    |  80 ++++++--
 .../problem/components/TagProblemsModal.vue   |  16 +-
 apps/web/src/admin/problem/detail.vue         |  38 ++++
 apps/web/src/admin/problem/list.vue           |  91 ++++++++-
 apps/web/src/admin/problem/tags.vue           |  30 +++
 apps/web/src/admin/problemset/edit.vue        |  16 ++
 apps/web/src/admin/problemset/list.vue        | 107 ++++++++--
 apps/web/src/admin/setting/config.vue         |  19 +-
 apps/web/src/admin/setting/home.vue           |  26 ++-
 .../tutorial/components/ExerciseManager.vue   |   1 +
 apps/web/src/admin/tutorial/detail.vue        |  63 +++++-
 apps/web/src/admin/tutorial/list.vue          |  49 ++++-
 .../web/src/admin/user/components/Actions.vue |   5 +-
 apps/web/src/admin/user/generate.vue          |  31 ++-
 apps/web/src/admin/user/list.vue              | 100 ++++++++--
 apps/web/src/index.css                        |   5 +
 apps/web/src/shared/layout/admin.vue          |  73 +++++--
 30 files changed, 1328 insertions(+), 183 deletions(-)

diff --git a/apps/web/src/admin/achievement/components/AchievementModal.vue b/apps/web/src/admin/achievement/components/AchievementModal.vue
index 0769239..be68736 100644
--- a/apps/web/src/admin/achievement/components/AchievementModal.vue
+++ b/apps/web/src/admin/achievement/components/AchievementModal.vue
@@ -10,6 +10,7 @@ import {
 } from "admin/api"
 import AchievementIcon from "shared/components/AchievementIcon.vue"
 import { RARITY_LABEL } from "utils/constants"
+import { useBreakpoints } from "shared/composables/breakpoints"
 
 const rarityOptions = Object.entries(RARITY_LABEL).map(([value, label]) => ({
   label,
@@ -44,6 +45,7 @@ function confirmDelete() {
 }
 
 const message = useMessage()
+const { isMobile } = useBreakpoints()
 const metrics = ref<MetricOption[]>([])
 const saving = ref(false)
 
@@ -115,7 +117,8 @@ async function save() {
     :title="editing ? '编辑成就' : '新建成就'"
     @update:show="emit('update:show', $event)"
   >
-    <n-form label-placement="left" :label-width="80">
+    <!-- 手机上弹框只有 350 宽，标签放到上面，输入框才有地方 -->
+    <n-form :label-placement="isMobile ? 'top' : 'left'" :label-width="80">
       <n-form-item label="名称" required>
         <n-input v-model:value="form.name" placeholder="成就名称" />
       </n-form-item>
@@ -146,7 +149,7 @@ async function save() {
       <n-form-item label="指标" required>
         <n-select v-model:value="form.metric" :options="metricOptions" filterable />
       </n-form-item>
-      <n-form-item v-if="metricHelp" label=" ">
+      <n-form-item v-if="metricHelp" label=" " :show-label="!isMobile">
         <n-text depth="3">{{ metricHelp }}</n-text>
       </n-form-item>
       <n-form-item label="条件">
diff --git a/apps/web/src/admin/achievement/list.vue b/apps/web/src/admin/achievement/list.vue
index c78a78c..60bd89d 100644
--- a/apps/web/src/admin/achievement/list.vue
+++ b/apps/web/src/admin/achievement/list.vue
@@ -216,4 +216,32 @@ onMounted(load)
 .off-note {
   color: v-bind("theme.errorColor");
 }
+
+/* 手机上指标名放在一组上头，下面两档一行；箭头拿掉（折行之后箭头会单独落在行首） */
+@media (max-width: 768px) {
+  .group {
+    flex-direction: column;
+    align-items: stretch;
+    gap: 8px;
+    padding: 12px 10px;
+  }
+
+  .metric {
+    width: auto;
+    font-weight: 600;
+  }
+
+  .steps {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+
+  .arrow {
+    display: none;
+  }
+
+  .step {
+    min-width: 0;
+  }
+}
 </style>
diff --git a/apps/web/src/admin/ai/list.vue b/apps/web/src/admin/ai/list.vue
index c46b858..d374ef8 100644
--- a/apps/web/src/admin/ai/list.vue
+++ b/apps/web/src/admin/ai/list.vue
@@ -1,8 +1,11 @@
 <script lang="ts" setup>
+import { Icon } from "@iconify/vue"
 import PageHeader from "admin/components/PageHeader.vue"
 import { useThemeVars } from "naive-ui"
 import { classLabel } from "oj/submission/utils"
 import Markdown from "shared/components/Markdown.vue"
+import { useBackClose } from "shared/composables/backClose"
+import { useBreakpoints } from "shared/composables/breakpoints"
 import Pagination from "shared/components/Pagination.vue"
 import UserName from "shared/components/UserName.vue"
 import { parseTime } from "utils/functions"
@@ -18,6 +21,19 @@ import { getAIReportDetail, getAIReportList, pinAIReport } from "../api"
  * 别的那份取消，所以切完重拉列表
  */
 const theme = useThemeVars()
+const { isMobile } = useBreakpoints()
+
+// 手机上左右两栏放不下：只列报告，点一份全文盖满整屏，按返回键回到列表
+const detailOpen = ref(false)
+useBackClose(detailOpen, isMobile)
+watch(isMobile, (mobile) => {
+  if (!mobile) detailOpen.value = false
+})
+
+function pick(id: number) {
+  if (isMobile.value) detailOpen.value = true
+  open(id)
+}
 
 const reports = ref<AdminAiReportListItem[]>([])
 const total = ref(0)
@@ -86,7 +102,7 @@ watchDebounced(
 <template>
   <PageHeader title="AI 报告">
     <template #filters>
-      <n-input v-model:value="query.username" clearable placeholder="用户名" style="width: 200px" />
+      <n-input v-model:value="query.username" clearable placeholder="用户名" class="search" />
       <n-text depth="3">共 {{ total }} 份</n-text>
     </template>
   </PageHeader>
@@ -101,7 +117,7 @@ watchDebounced(
           type="button"
           class="item"
           :class="{ on: r.id === selectedId }"
-          @click="open(r.id)"
+          @click="pick(r.id)"
         >
           <span class="item-head">
             <UserName :username="r.username" />
@@ -116,7 +132,13 @@ watchDebounced(
       <Pagination :total="total" v-model:limit="query.limit" v-model:page="query.page" simple />
     </div>
 
-    <div class="detail">
+    <div class="detail" :class="{ open: detailOpen }">
+      <div v-if="isMobile" class="detail-bar">
+        <n-button quaternary circle @click="detailOpen = false">
+          <template #icon><Icon icon="ph:arrow-left" /></template>
+        </n-button>
+        <span>AI 报告</span>
+      </div>
       <n-spin :show="loadingDetail">
         <template v-if="selected">
           <div class="detail-head">
@@ -262,4 +284,54 @@ watchDebounced(
   font-variant-numeric: tabular-nums;
   white-space: nowrap;
 }
+
+.search {
+  width: 200px;
+}
+
+@media (max-width: 768px) {
+  .search {
+    flex: 1;
+    width: auto;
+    min-width: 0;
+  }
+
+  .list-col {
+    width: 100%;
+  }
+
+  .detail {
+    display: none;
+  }
+
+  .detail.open {
+    display: block;
+    position: fixed;
+    inset: 0;
+    z-index: 2000;
+    overflow-y: auto;
+    padding: 0 16px 32px;
+    background: v-bind("theme.bodyColor");
+  }
+
+  .detail-bar {
+    position: sticky;
+    top: 0;
+    z-index: 1;
+    display: flex;
+    align-items: center;
+    gap: 4px;
+    height: 48px;
+    margin: 0 -16px 12px;
+    padding: 0 8px;
+    font-weight: 600;
+    border-bottom: 1px solid v-bind("theme.dividerColor");
+    background: v-bind("theme.bodyColor");
+  }
+
+  .detail-head {
+    flex-wrap: wrap;
+    row-gap: 6px;
+  }
+}
 </style>
diff --git a/apps/web/src/admin/announcement/list.vue b/apps/web/src/admin/announcement/list.vue
index 104cbe0..ac94f93 100644
--- a/apps/web/src/admin/announcement/list.vue
+++ b/apps/web/src/admin/announcement/list.vue
@@ -7,6 +7,7 @@ import { parseTime } from "utils/functions"
 import type { AdminAnnouncementListItem } from "utils/types"
 import { editAnnouncement, getAnnouncement, getAnnouncementList } from "../api"
 import Actions from "./components/Actions.vue"
+import { useBreakpoints } from "shared/composables/breakpoints"
 
 const message = useMessage()
 const total = ref(0)
@@ -22,25 +23,66 @@ const announcements = ref<AdminAnnouncementListItem[]>([])
  * 精确到秒的两列时间拿掉
  */
 const theme = useThemeVars()
+const { isMobile } = useBreakpoints()
 
-const columns: DataTableColumn<AdminAnnouncementListItem>[] = [
+function renderTitle(row: AdminAnnouncementListItem) {
+  return h("span", { class: "title-cell" }, [
+    h(
+      RouterLink,
+      {
+        class: "title-link",
+        to: { name: "admin announcement edit", params: { announcementID: row.id } },
+      },
+      () => row.title,
+    ),
+    row.top ? h("span", { class: "top" }, "置顶") : null,
+    h("span", { class: "muted small" }, row.tag),
+  ])
+}
+
+function renderVisible(row: AdminAnnouncementListItem) {
+  return h(NSwitch, {
+    value: row.visible,
+    size: isMobile.value ? "medium" : "small",
+    rubberBand: false,
+    onUpdateValue: () => toggle(row, "visible"),
+  })
+}
+
+function renderActions(row: AdminAnnouncementListItem) {
+  return h(Actions, {
+    announcementID: row.id,
+    top: row.top,
+    onDeleted: listAnnouncements,
+    onToggleTop: () => toggle(row, "top"),
+  })
+}
+
+/** 手机上一条一张卡：标题一行，发布 · 改过一行小字，操作一行；「学生看得到」单独一列靠右 */
+function renderMobileCard(row: AdminAnnouncementListItem) {
+  const created = parseTime(row.createTime, "YYYY-MM-DD")
+  const updated = parseTime(row.lastUpdateTime, "YYYY-MM-DD")
+  return h("div", { class: "m-card" }, [
+    renderTitle(row),
+    h("div", { class: "m-meta muted num" }, [
+      h("span", { class: "m-item" }, `${created} 发布`),
+      updated === created ? null : h("span", { class: "m-item" }, ` · ${updated} 改过`),
+    ]),
+    renderActions(row),
+  ])
+}
+
+const mobileColumns: DataTableColumn<AdminAnnouncementListItem>[] = [
+  { title: "标题", key: "title", render: renderMobileCard },
+  { title: "看得到", key: "visible", width: 72, align: "center", render: renderVisible },
+]
+
+const desktopColumns: DataTableColumn<AdminAnnouncementListItem>[] = [
   {
     title: "标题",
     key: "title",
     width: 360,
-    render: (row) =>
-      h("span", { class: "title-cell" }, [
-        h(
-          RouterLink,
-          {
-            class: "title-link",
-            to: { name: "admin announcement edit", params: { announcementID: row.id } },
-          },
-          () => row.title,
-        ),
-        row.top ? h("span", { class: "top" }, "置顶") : null,
-        h("span", { class: "muted small" }, row.tag),
-      ]),
+    render: renderTitle,
   },
   {
     title: "发布",
@@ -62,28 +104,18 @@ const columns: DataTableColumn<AdminAnnouncementListItem>[] = [
     title: "学生看得到",
     key: "visible",
     width: 100,
-    render: (row) =>
-      h(NSwitch, {
-        value: row.visible,
-        size: "small",
-        rubberBand: false,
-        onUpdateValue: () => toggle(row, "visible"),
-      }),
+    render: renderVisible,
   },
   {
     title: "",
     key: "actions",
     minWidth: 240,
-    render: (row) =>
-      h(Actions, {
-        announcementID: row.id,
-        top: row.top,
-        onDeleted: listAnnouncements,
-        onToggleTop: () => toggle(row, "top"),
-      }),
+    render: renderActions,
   },
 ]
 
+const columns = computed(() => (isMobile.value ? mobileColumns : desktopColumns))
+
 // 列表响应不含 content（正文是 8MB 上限的富文本），而更新接口要求 content 必填 ——
 // 拿列表里那行直接回传会 400。所以先取回整条再改。
 async function toggle(announcement: AdminAnnouncementListItem, field: "visible" | "top") {
@@ -134,6 +166,27 @@ watch(query, listAnnouncements, { deep: true })
   gap: 8px;
 }
 
+.ann-table :deep(.m-card) {
+  display: flex;
+  flex-direction: column;
+  align-items: flex-start;
+  gap: 6px;
+  min-width: 0;
+}
+
+.ann-table :deep(.m-card .title-cell) {
+  display: flex;
+  flex-wrap: wrap;
+}
+
+.ann-table :deep(.m-meta) {
+  font-size: 13px;
+}
+
+.ann-table :deep(.m-item) {
+  white-space: nowrap;
+}
+
 .ann-table :deep(.title-link) {
   color: inherit;
   font-weight: 500;
diff --git a/apps/web/src/admin/components/PageHeader.vue b/apps/web/src/admin/components/PageHeader.vue
index fb48d74..1e9b56a 100644
--- a/apps/web/src/admin/components/PageHeader.vue
+++ b/apps/web/src/admin/components/PageHeader.vue
@@ -71,6 +71,8 @@ const slots = defineSlots<{
 
 .title {
   margin: 0;
+  /* 手机上标题行挤不下时让右边的按钮折到下一行，标题自己别一个字一行 */
+  white-space: nowrap;
   font-size: 20px;
   font-weight: 600;
   line-height: 1.4;
diff --git a/apps/web/src/admin/contest/components/Actions.vue b/apps/web/src/admin/contest/components/Actions.vue
index 0a6cee6..4cb20df 100644
--- a/apps/web/src/admin/contest/components/Actions.vue
+++ b/apps/web/src/admin/contest/components/Actions.vue
@@ -1,6 +1,7 @@
 <script lang="ts" setup>
 import type { AdminContest } from "utils/types"
 import { cloneContest } from "../../api"
+import { useBreakpoints } from "shared/composables/breakpoints"
 
 interface Props {
   contest: AdminContest
@@ -8,6 +9,8 @@ interface Props {
 const props = defineProps<Props>()
 const router = useRouter()
 const message = useMessage()
+// 手机上在卡片里，放不下一行就折下去
+const { isMobile } = useBreakpoints()
 
 function goEdit() {
   router.push({
@@ -40,7 +43,7 @@ async function clone() {
 </script>
 <template>
   <!-- 操作直接摆出来，不收进 ⋯（用户说的） -->
-  <n-flex :size="4" :wrap="false">
+  <n-flex :size="4" :wrap="isMobile">
     <n-button size="small" @click="goEdit">编辑</n-button>
     <n-button size="small" @click="goClass">
       {{ contest.status === "-1" ? "成绩" : "全班情况" }}
diff --git a/apps/web/src/admin/contest/list.vue b/apps/web/src/admin/contest/list.vue
index ff0c294..61e4633 100644
--- a/apps/web/src/admin/contest/list.vue
+++ b/apps/web/src/admin/contest/list.vue
@@ -8,6 +8,7 @@ import { CONTEST_STATUS } from "utils/constants"
 import { parseTime } from "utils/functions"
 import { editContest, getContestList } from "../api"
 import Actions from "./components/Actions.vue"
+import { useBreakpoints } from "shared/composables/breakpoints"
 
 /**
  * 后台比赛列表（设计稿「比赛重设计」CtAdminList）。一行一场：比赛名（期中 / 期末挂标，
@@ -16,6 +17,7 @@ import Actions from "./components/Actions.vue"
  * 会跑到最前面。ID、标签、类型三列拿掉（标签只在期中 / 期末时挂出来，类型就是那把锁）
  */
 const theme = useThemeVars()
+const { isMobile } = useBreakpoints()
 const contests = ref<AdminContestListItem[]>([])
 const total = ref(0)
 const query = reactive({
@@ -43,16 +45,69 @@ function duration(row: AdminContestListItem) {
 
 const EXAM_TAGS = ["期中", "期末"]
 
-const columns: DataTableColumn<AdminContestListItem>[] = [
+function renderTitle(row: AdminContestListItem) {
+  return h("span", { class: "title-cell" }, [
+    h(ContestTitle, { contest: row }),
+    EXAM_TAGS.includes(row.tag) ? h("span", { class: "exam" }, row.tag) : null,
+  ])
+}
+
+function renderStatus(row: AdminContestListItem) {
+  return h(
+    "span",
+    { class: row.status === "0" ? "live" : row.status === "-1" ? "muted" : "" },
+    row.status === "-1"
+      ? "结束了"
+      : row.status === "0"
+        ? "进行中"
+        : CONTEST_STATUS[row.status].name,
+  )
+}
+
+function renderVisible(row: AdminContestListItem) {
+  return h(NSwitch, {
+    value: row.visible,
+    size: isMobile.value ? "medium" : "small",
+    rubberBand: false,
+    onUpdateValue: () => toggleVisible(row),
+  })
+}
+
+/**
+ * 手机上一场一张卡：比赛名一行；开始 · 多长 · 状态 · 题数 · 参加 · 出卷一行小字（每项不断开）；
+ * 操作按钮放不下就折行。「学生看得到」开关单独一列靠右
+ */
+function renderMobileCard(row: AdminContestListItem) {
+  const items = [
+    h("span", { class: "num" }, parseTime(row.startTime, "YYYY-MM-DD HH:mm")),
+    duration(row),
+    renderStatus(row),
+    `${row.problemCount} 题`,
+    row.participantCount ? `${row.participantCount} 人参加` : null,
+    row.createdBy.username,
+  ].filter((it) => it !== null)
+  return h("div", { class: "m-card" }, [
+    renderTitle(row),
+    h(
+      "div",
+      { class: "m-meta muted" },
+      items.map((it, i) => h("span", { class: "m-item", key: i }, i ? [" · ", it] : [it])),
+    ),
+    h(Actions, { contest: row }),
+  ])
+}
+
+const mobileColumns: DataTableColumn<AdminContestListItem>[] = [
+  { title: "比赛", key: "title", render: renderMobileCard },
+  { title: "看得到", key: "visible", width: 72, align: "center", render: renderVisible },
+]
+
+const desktopColumns: DataTableColumn<AdminContestListItem>[] = [
   {
     title: "比赛",
     key: "title",
     width: 260,
-    render: (row) =>
-      h("span", { class: "title-cell" }, [
-        h(ContestTitle, { contest: row }),
-        EXAM_TAGS.includes(row.tag) ? h("span", { class: "exam" }, row.tag) : null,
-      ]),
+    render: renderTitle,
   },
   {
     title: "开始 · 多长",
@@ -68,16 +123,7 @@ const columns: DataTableColumn<AdminContestListItem>[] = [
     title: "状态",
     key: "status",
     width: 72,
-    render: (row) =>
-      h(
-        "span",
-        { class: row.status === "0" ? "live" : row.status === "-1" ? "muted" : "" },
-        row.status === "-1"
-          ? "结束了"
-          : row.status === "0"
-            ? "进行中"
-            : CONTEST_STATUS[row.status].name,
-      ),
+    render: renderStatus,
   },
   { title: "题", key: "problemCount", width: 56 },
   {
@@ -97,13 +143,7 @@ const columns: DataTableColumn<AdminContestListItem>[] = [
     title: "学生看得到",
     key: "visible",
     width: 96,
-    render: (row) =>
-      h(NSwitch, {
-        value: row.visible,
-        size: "small",
-        rubberBand: false,
-        onUpdateValue: () => toggleVisible(row),
-      }),
+    render: renderVisible,
   },
   {
     title: "",
@@ -113,6 +153,8 @@ const columns: DataTableColumn<AdminContestListItem>[] = [
   },
 ]
 
+const columns = computed(() => (isMobile.value ? mobileColumns : desktopColumns))
+
 async function listContests() {
   const offset = (query.page - 1) * query.limit
   const res = await getContestList(offset, query.limit, query.keyword)
@@ -135,7 +177,12 @@ watchDebounced(() => query.keyword, listContests, {
       </n-button>
     </template>
     <template #filters>
-      <n-input v-model:value="query.keyword" placeholder="比赛名" clearable style="width: 220px" />
+      <n-input
+        v-model:value="query.keyword"
+        placeholder="比赛名"
+        clearable
+        :style="{ width: isMobile ? '100%' : '220px' }"
+      />
     </template>
   </PageHeader>
   <n-data-table striped class="contest-table" :columns="columns" :data="contests" />
@@ -150,6 +197,28 @@ watchDebounced(() => query.keyword, listContests, {
   font-weight: 500;
 }
 
+.contest-table :deep(.m-card) {
+  display: flex;
+  flex-direction: column;
+  align-items: flex-start;
+  gap: 6px;
+  min-width: 0;
+}
+
+.contest-table :deep(.m-card .title-cell) {
+  display: flex;
+  flex-wrap: wrap;
+}
+
+.contest-table :deep(.m-meta) {
+  font-size: 13px;
+  line-height: 1.5;
+}
+
+.contest-table :deep(.m-item) {
+  white-space: nowrap;
+}
+
 .contest-table :deep(.exam) {
   display: inline-flex;
   align-items: center;
diff --git a/apps/web/src/admin/learn/ExerciseAttempts.vue b/apps/web/src/admin/learn/ExerciseAttempts.vue
index f57d0a4..9a3307c 100644
--- a/apps/web/src/admin/learn/ExerciseAttempts.vue
+++ b/apps/web/src/admin/learn/ExerciseAttempts.vue
@@ -3,13 +3,22 @@ import { NText } from "naive-ui"
 import { getLearnExerciseAttempts } from "admin/api"
 import { parseTime } from "utils/functions"
 import type { LearnExerciseAttempt } from "utils/types"
+import UserName from "shared/components/UserName.vue"
+import { useBreakpoints } from "shared/composables/breakpoints"
 
 const props = defineProps<{ exerciseId: number; className: string }>()
+const { isMobile } = useBreakpoints()
 
 const loading = ref(true)
 const rows = ref<LearnExerciseAttempt[]>([])
 
-const columns: DataTableColumn<LearnExerciseAttempt>[] = [
+function renderResult(row: LearnExerciseAttempt) {
+  return row.solved
+    ? h(NText, { type: "success" }, () => `做对了（第 ${row.attemptsToSolve} 次）`)
+    : h(NText, { type: "error" }, () => "还没做对")
+}
+
+const desktopColumns: DataTableColumn<LearnExerciseAttempt>[] = [
   { title: "班级", key: "className", width: 80 },
   { title: "学号", key: "username", width: 140 },
   {
@@ -22,10 +31,7 @@ const columns: DataTableColumn<LearnExerciseAttempt>[] = [
     title: "结果",
     key: "solved",
     width: 130,
-    render: (row) =>
-      row.solved
-        ? h(NText, { type: "success" }, () => `做对了（第 ${row.attemptsToSolve} 次）`)
-        : h(NText, { type: "error" }, () => "还没做对"),
+    render: renderResult,
   },
   { title: "提交次数", key: "attempts", width: 100, sorter: "default" },
   {
@@ -45,6 +51,27 @@ const columns: DataTableColumn<LearnExerciseAttempt>[] = [
   },
 ]
 
+/** 手机上七列放不下：一个人一格，名字和结果一行，下面一行小字是交了几次、最后错在哪 */
+const mobileColumns: DataTableColumn<LearnExerciseAttempt>[] = [
+  {
+    title: "学生",
+    key: "username",
+    render: (row) =>
+      h("div", { class: "m-row" }, [
+        h("div", { class: "m-line" }, [h(UserName, { username: row.username }), renderResult(row)]),
+        h(
+          NText,
+          { depth: 3, class: "m-sub" },
+          () =>
+            `交了 ${row.attempts} 次 · ${parseTime(row.lastAttemptAt, "M月D日 HH:mm")}` +
+            (row.lastWrongAnswer ? ` · 最后错在 ${row.lastWrongAnswer}` : ""),
+        ),
+      ]),
+  },
+]
+
+const columns = computed(() => (isMobile.value ? mobileColumns : desktopColumns))
+
 onMounted(async () => {
   try {
     rows.value = await getLearnExerciseAttempts(props.exerciseId, {
@@ -72,3 +99,19 @@ onMounted(async () => {
     style="padding: 16px 0"
   />
 </template>
+
+<style scoped>
+:deep(.m-row) {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+}
+:deep(.m-line) {
+  display: flex;
+  justify-content: space-between;
+  gap: 8px;
+}
+:deep(.m-sub) {
+  font-size: 12px;
+}
+</style>
diff --git a/apps/web/src/admin/learn/index.vue b/apps/web/src/admin/learn/index.vue
index 7a43c7a..0eb67c0 100644
--- a/apps/web/src/admin/learn/index.vue
+++ b/apps/web/src/admin/learn/index.vue
@@ -1,5 +1,6 @@
 <script setup lang="ts">
 import { Icon } from "@iconify/vue"
+import { useThemeVars } from "naive-ui"
 import type { LearnBoard, LearnBoardStudent, LearnExerciseProgress } from "utils/types"
 import { getLearnBoard, getLearnExercises } from "admin/api"
 import { parseTime, readableDuration } from "utils/functions"
@@ -18,6 +19,7 @@ import ExerciseAttempts from "./ExerciseAttempts.vue"
  * 不选班就按排名页同一套规则猜老师在教哪个班。
  */
 const configStore = useConfigStore()
+const theme = useThemeVars()
 
 const KIND: Record<string, string> = {
   mcq: "选择",
@@ -148,7 +150,7 @@ onMounted(load)
         :options="classOptions"
         filterable
         placeholder="选班级"
-        style="width: 170px"
+        class="class-select"
       />
     </div>
 
@@ -257,7 +259,7 @@ onMounted(load)
                 v-model:value="lessonId"
                 :options="lessonOptions"
                 size="small"
-                style="width: 170px"
+                class="lesson-select"
               />
             </div>
             <div v-if="!lessonExercises.length" class="muted none">这课没有练一练</div>
@@ -595,4 +597,63 @@ onMounted(load)
 .flag {
   color: var(--learn-orange-text);
 }
+.class-select,
+.lesson-select {
+  width: 170px;
+}
+
+/* 手机上：方块格在自己的框里横着滑（名字列钉在左边），练一练排到下面 */
+@media (max-width: 768px) {
+  .top {
+    flex-wrap: wrap;
+  }
+  .top .title {
+    width: 100%;
+  }
+  .top .grow {
+    display: none;
+  }
+  .class-select {
+    flex: 1;
+    width: auto;
+    min-width: 0;
+  }
+  .stats {
+    gap: 8px;
+    margin-bottom: 12px;
+  }
+  .stat {
+    padding: 10px 12px;
+  }
+  .stat-label {
+    font-size: 12px;
+  }
+  .stat-value {
+    font-size: 18px;
+  }
+  .unit {
+    font-size: 13px;
+  }
+  .main {
+    flex-direction: column;
+    align-items: stretch;
+  }
+  .c-name {
+    position: sticky;
+    left: 0;
+    z-index: 1;
+    width: 96px;
+    margin-left: -16px;
+    padding-left: 16px;
+    background: v-bind("theme.bodyColor");
+  }
+  .side {
+    width: auto;
+  }
+  .lesson-select {
+    flex: 1;
+    width: auto;
+    min-width: 0;
+  }
+}
 </style>
diff --git a/apps/web/src/admin/problem/SqlDetail.vue b/apps/web/src/admin/problem/SqlDetail.vue
index 61ee114..5a48f6f 100644
--- a/apps/web/src/admin/problem/SqlDetail.vue
+++ b/apps/web/src/admin/problem/SqlDetail.vue
@@ -1029,4 +1029,21 @@ onMounted(async () => {
 .stale {
   opacity: 0.5;
 }
+
+/* 手机：编号 + 题目一行，难度 + 可见折到第二行；判题方式那行也折 */
+@media (max-width: 768px) {
+  .card {
+    padding: 12px;
+  }
+
+  .headRow,
+  .cardHead,
+  .moreRow {
+    flex-wrap: wrap;
+  }
+
+  .headRow .grow {
+    flex: 1 1 180px;
+  }
+}
 </style>
diff --git a/apps/web/src/admin/problem/Stuck.vue b/apps/web/src/admin/problem/Stuck.vue
index 3818367..d480889 100644
--- a/apps/web/src/admin/problem/Stuck.vue
+++ b/apps/web/src/admin/problem/Stuck.vue
@@ -1,5 +1,7 @@
 <script setup lang="ts">
 import { useRouteQuery } from "@vueuse/router"
+import { Icon } from "@iconify/vue"
+import { useThemeVars } from "naive-ui"
 import { zonedParts } from "utils/functions"
 import type { StuckProblem, StuckProblemDetail, StuckStudent } from "utils/types"
 import { getStuckProblemDetail, getStuckProblems } from "admin/api"
@@ -8,6 +10,8 @@ import UserName from "shared/components/UserName.vue"
 import { classLabel, groupClassOptions } from "oj/submission/utils"
 import { periodRange, type Period } from "oj/statistics/period"
 import { resultName, useResultColor } from "oj/statistics/results"
+import { useBackClose } from "shared/composables/backClose"
+import { useBreakpoints } from "shared/composables/breakpoints"
 import "oj/learn/learn.css"
 
 /**
@@ -20,6 +24,8 @@ import "oj/learn/learn.css"
  */
 const router = useRouter()
 const configStore = useConfigStore()
+const { isMobile } = useBreakpoints()
+const theme = useThemeVars()
 const resultColor = useResultColor()
 
 const PERIODS: { label: string; value: Period }[] = [
@@ -145,6 +151,27 @@ async function loadDetail() {
   }
 }
 
+/**
+ * 手机上三栏放不下：知识点横着滑一排、题目列表占满一屏，点一道题，这道题的详情盖满整屏，
+ * 按返回键回到列表
+ */
+const detailOpen = ref(false)
+useBackClose(detailOpen, isMobile)
+watch(isMobile, (mobile) => {
+  if (!mobile) detailOpen.value = false
+})
+
+const route = useRoute()
+async function pick(row: StuckProblem) {
+  if (!isMobile.value) {
+    picked.value = String(row.id)
+    return
+  }
+  // 先把地址换好再打开：开着的时候 useBackClose 会拦下一切路由跳转（连 replace 也拦）
+  await router.replace({ query: { ...route.query, problem: String(row.id) } })
+  detailOpen.value = true
+}
+
 watch([className, period], load)
 watch(() => [selected.value?.id, problems.value] as const, loadDetail)
 onMounted(load)
@@ -296,24 +323,26 @@ const links = computed(() => {
             <span class="grow" />
             <span class="muted small">一次就对</span>
           </div>
-          <button
-            v-for="row in knowledge"
-            :key="row.name"
-            type="button"
-            class="item"
-            :class="{ on: row.name === activeTag }"
-            @click="tag = row.name"
-          >
-            <span class="line">
-              <span class="name">{{ row.label }}</span>
-              <span class="grow" />
-              <span class="muted small num">{{ row.problems }} 道</span>
-            </span>
-            <span class="line">
-              <span class="track"><span :style="{ width: `${row.rate}%` }" /></span>
-              <span class="pct num">{{ row.rate }}%</span>
-            </span>
-          </button>
+          <div class="know-list">
+            <button
+              v-for="row in knowledge"
+              :key="row.name"
+              type="button"
+              class="item"
+              :class="{ on: row.name === activeTag }"
+              @click="tag = row.name"
+            >
+              <span class="line">
+                <span class="name">{{ row.label }}</span>
+                <span class="grow" />
+                <span class="muted small num">{{ row.problems }} 道</span>
+              </span>
+              <span class="line">
+                <span class="track"><span :style="{ width: `${row.rate}%` }" /></span>
+                <span class="pct num">{{ row.rate }}%</span>
+              </span>
+            </button>
+          </div>
         </section>
 
         <section class="card problems">
@@ -339,7 +368,7 @@ const links = computed(() => {
               type="button"
               class="item"
               :class="{ on: row.id === selected?.id }"
-              @click="picked = String(row.id)"
+              @click="pick(row)"
             >
               <span class="line">
                 <span class="pid muted num">{{ row.displayId }}</span>
@@ -359,7 +388,13 @@ const links = computed(() => {
           </div>
         </section>
 
-        <section v-if="list.length" class="card detail">
+        <section v-if="list.length" class="card detail" :class="{ open: detailOpen }">
+          <div v-if="isMobile" class="detail-bar">
+            <n-button quaternary circle @click="detailOpen = false">
+              <template #icon><Icon icon="ph:arrow-left" /></template>
+            </n-button>
+            <span class="strong">{{ activeTag || "全部" }}</span>
+          </div>
           <n-spin :show="detailLoading">
             <div v-if="detail && links" class="detail-body">
               <div class="line dhead">
@@ -860,4 +895,112 @@ const links = computed(() => {
   width: 96px;
   flex-shrink: 0;
 }
+
+@media (max-width: 768px) {
+  .top {
+    flex-wrap: wrap;
+  }
+  .top .grow {
+    display: none;
+  }
+  .title {
+    width: 100%;
+  }
+  .top .n-select {
+    flex: 1 1 100%;
+    min-width: 0;
+  }
+  .seg {
+    width: 100%;
+  }
+  .seg button {
+    flex: 1;
+    padding: 0 4px;
+  }
+  .main {
+    flex-direction: column;
+    align-items: stretch;
+  }
+  .know,
+  .problems {
+    width: auto;
+  }
+  /* 知识点横着一排滑 */
+  .know-list {
+    display: flex;
+    overflow-x: auto;
+    border-top: 1px solid var(--learn-line);
+  }
+  .know .item {
+    flex: 0 0 150px;
+    border-top: 0;
+    border-left: 1px solid var(--learn-line);
+  }
+  .know .item:first-child {
+    border-left: 0;
+  }
+  .know .item.on {
+    box-shadow: inset 0 -3px 0 var(--learn-green);
+  }
+  .know .track {
+    width: auto;
+    flex: 1;
+  }
+  .scroll {
+    max-height: none;
+  }
+  /* 一道题的详情盖满整屏 */
+  .detail {
+    display: none;
+  }
+  .detail.open {
+    display: block;
+    position: fixed;
+    inset: 0;
+    z-index: 2000;
+    border: 0;
+    border-radius: 0;
+    overflow-y: auto;
+    background: v-bind("theme.bodyColor");
+  }
+  .detail-bar {
+    position: sticky;
+    top: 0;
+    z-index: 1;
+    display: flex;
+    align-items: center;
+    gap: 4px;
+    height: 48px;
+    padding: 0 8px;
+    border-bottom: 1px solid var(--learn-line);
+    background: v-bind("theme.bodyColor");
+  }
+  .detail-body {
+    padding: 14px 16px 32px;
+  }
+  .links {
+    margin-left: 0;
+    width: 100%;
+  }
+  .stats {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    row-gap: 12px;
+  }
+  .cavg {
+    display: none;
+  }
+  .cname {
+    width: 84px;
+  }
+  .track.mid {
+    width: 64px;
+  }
+  .dcol {
+    flex: 1;
+    width: auto;
+  }
+  .names {
+    grid-template-columns: minmax(0, 1fr);
+  }
+}
 </style>
diff --git a/apps/web/src/admin/problem/Trend.vue b/apps/web/src/admin/problem/Trend.vue
index aace936..c85d47f 100644
--- a/apps/web/src/admin/problem/Trend.vue
+++ b/apps/web/src/admin/problem/Trend.vue
@@ -150,14 +150,14 @@ onMounted(async () => {
       <n-select
         :value="selected || null"
         :options="gradeOptions"
-        style="width: 100px"
+        class="grade-select"
         @update:value="pickGrade"
       />
       <span class="muted">和</span>
       <n-select
         :value="compare"
         :options="compareOptions"
-        style="width: 170px"
+        class="compare-select"
         @update:value="(value: string) => (compare = value)"
       />
     </div>
@@ -455,6 +455,12 @@ a.c-title:hover .ptitle {
   border-radius: 5px;
   background: var(--worse);
 }
+.grade-select {
+  width: 100px;
+}
+.compare-select {
+  width: 170px;
+}
 .dot-before {
   width: 10px;
   height: 10px;
@@ -462,4 +468,78 @@ a.c-title:hover .ptitle {
   box-sizing: border-box;
   border: 2px solid rgba(128, 128, 128, 0.8);
 }
+
+/* 手机上一道题两行：题名和两个百分比一行，下面一整行是轨道；人数藏掉 */
+@media (max-width: 768px) {
+  .top {
+    flex-wrap: wrap;
+  }
+  .top .title {
+    width: 100%;
+  }
+  .top .grow {
+    display: none;
+  }
+  .grade-select {
+    width: 90px;
+  }
+  .compare-select {
+    flex: 1;
+    width: auto;
+    min-width: 0;
+  }
+  .stats {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+  .stat {
+    padding: 12px 14px;
+  }
+  .value {
+    font-size: 22px;
+  }
+  .row {
+    display: grid;
+    grid-template-columns: minmax(0, 1fr) auto auto;
+    column-gap: 10px;
+    row-gap: 4px;
+  }
+  .axis {
+    height: auto;
+    grid-template-columns: minmax(0, 1fr);
+  }
+  .axis .c-title {
+    display: none;
+  }
+  .legend {
+    grid-row: 1;
+    margin-left: 0;
+  }
+  .item {
+    height: auto;
+    padding-top: 8px;
+    padding-bottom: 8px;
+  }
+  .c-title {
+    width: auto;
+  }
+  .c-track {
+    grid-column: 1 / -1;
+    min-width: 0;
+  }
+  .item .c-track {
+    grid-row: 2;
+  }
+  .c-values {
+    grid-row: 1;
+    grid-column: 2;
+    width: auto;
+  }
+  .c-delta {
+    grid-row: 1;
+    grid-column: 3;
+  }
+  .c-users {
+    display: none;
+  }
+}
 </style>
diff --git a/apps/web/src/admin/problem/components/Actions.vue b/apps/web/src/admin/problem/components/Actions.vue
index ed6df49..fee5f9f 100644
--- a/apps/web/src/admin/problem/components/Actions.vue
+++ b/apps/web/src/admin/problem/components/Actions.vue
@@ -2,6 +2,7 @@
 import { errorCode, errorMessage } from "utils/api"
 import { deleteContestProblem, deleteProblem, makeProblemPublic } from "admin/api"
 import download from "utils/download"
+import { useBreakpoints } from "shared/composables/breakpoints"
 
 /**
  * 题目列表一行的操作：编辑、在前台看、下载测试数据、删除直接摆出来（用户说的：不要收进 ⋯）。
@@ -22,6 +23,10 @@ const route = useRoute()
 const router = useRouter()
 const message = useMessage()
 
+// 手机上题目列表一道题一张卡，按钮在卡片里放不下一行就折下去；测试数据是 zip，手机上下了也没处用，
+// 转成公开题要想好新题号，也留给电脑，都不摆
+const { isMobile } = useBreakpoints()
+
 const isContestProblem = computed(() => route.name === "admin contest problem list")
 
 const showMakePublicModal = ref(false)
@@ -106,11 +111,13 @@ async function handleMakePublic() {
 }
 </script>
 <template>
-  <n-flex :size="6" :wrap="false">
+  <n-flex :size="6" :wrap="isMobile">
     <n-button size="small" @click="goEdit">编辑</n-button>
     <n-button size="small" title="在前台打开这道题" @click="goCheck">前台看</n-button>
-    <n-button size="small" title="下载测试数据" @click="downloads">测试数据</n-button>
-    <n-button v-if="isContestProblem" size="small" @click="openMakePublicModal">
+    <n-button v-if="!isMobile" size="small" title="下载测试数据" @click="downloads">
+      测试数据
+    </n-button>
+    <n-button v-if="isContestProblem && !isMobile" size="small" @click="openMakePublicModal">
       转成公开题
     </n-button>
     <span :title="props.triedUsers ? `有 ${props.triedUsers} 人交过，删不掉` : undefined">
diff --git a/apps/web/src/admin/problem/components/CaseTable.vue b/apps/web/src/admin/problem/components/CaseTable.vue
index cdd6302..3936552 100644
--- a/apps/web/src/admin/problem/components/CaseTable.vue
+++ b/apps/web/src/admin/problem/components/CaseTable.vue
@@ -1,5 +1,6 @@
 <script setup lang="ts">
 import { useThemeVars } from "naive-ui"
+import { useBreakpoints } from "shared/composables/breakpoints"
 import { caseStatus, type AnswerSource, type CaseRow } from "./caseRows"
 
 /**
@@ -14,6 +15,8 @@ const props = defineProps<{
 }>()
 
 const theme = useThemeVars()
+// 手机上「当例子」那一列的表头藏了，勾选框自己带上字
+const { isMobile } = useBreakpoints()
 
 /** 输出最多先露这么多行，长了点开看全 */
 const CLIP_LINES = 6
@@ -106,26 +109,30 @@ const status = (row: CaseRow) => caseStatus(row, props.source)
           </div>
         </template>
       </div>
-      <n-checkbox
-        v-if="!examplesOnly"
-        v-model:checked="row.example"
-        class="example"
-        :aria-label="`第 ${index + 1} 组当例子`"
-      />
-      <span class="mark" :class="status(row)">
-        <template v-if="status(row) === 'ok'">✓</template>
-        <template v-else-if="status(row) === 'error'">✗</template>
-        <template v-else-if="status(row) === 'changed'">●</template>
-      </span>
-      <n-button
-        quaternary
-        size="tiny"
-        class="remove"
-        :aria-label="`删掉第 ${index + 1} 组`"
-        @click="remove(index)"
-      >
-        删掉
-      </n-button>
+      <!-- 桌面上 display: contents，三样各占一格；手机上折到输入输出下面排成一行 -->
+      <div class="tools">
+        <n-checkbox
+          v-if="!examplesOnly"
+          v-model:checked="row.example"
+          class="example"
+          :aria-label="`第 ${index + 1} 组当例子`"
+          :label="isMobile ? '当例子' : undefined"
+        />
+        <span class="mark" :class="status(row)">
+          <template v-if="status(row) === 'ok'">✓</template>
+          <template v-else-if="status(row) === 'error'">✗</template>
+          <template v-else-if="status(row) === 'changed'">●</template>
+        </span>
+        <n-button
+          quaternary
+          size="tiny"
+          class="remove"
+          :aria-label="`删掉第 ${index + 1} 组`"
+          @click="remove(index)"
+        >
+          删掉
+        </n-button>
+      </div>
     </div>
   </div>
 </template>
@@ -254,4 +261,37 @@ const status = (row: CaseRow) => caseStatus(row, props.source)
 .remove:focus-visible {
   opacity: 1;
 }
+
+.tools {
+  display: contents;
+}
+
+/* 手机：一组占两行 —— 编号 / 输入 / 输出，下面一行 当例子 ✓ 删掉（没有悬停，删掉常显） */
+@media (max-width: 768px) {
+  .row,
+  .examplesOnly .row {
+    grid-template-columns: 18px minmax(0, 1fr) minmax(0, 1fr);
+    gap: 6px;
+  }
+
+  .row.head > :nth-child(n + 4) {
+    display: none;
+  }
+
+  .tools {
+    grid-column: 2 / -1;
+    display: flex;
+    align-items: center;
+    gap: 10px;
+  }
+
+  .example {
+    margin-top: 0;
+  }
+
+  .remove {
+    margin-left: auto;
+    opacity: 1;
+  }
+}
 </style>
diff --git a/apps/web/src/admin/problem/components/TagProblemsModal.vue b/apps/web/src/admin/problem/components/TagProblemsModal.vue
index 84c3be6..96100e3 100644
--- a/apps/web/src/admin/problem/components/TagProblemsModal.vue
+++ b/apps/web/src/admin/problem/components/TagProblemsModal.vue
@@ -3,6 +3,7 @@ import { NButton, NTag } from "naive-ui"
 import Pagination from "shared/components/Pagination.vue"
 import type { AdminProblemRow } from "utils/types"
 import { batchTagProblems, getProblemList } from "admin/api"
+import { useBreakpoints } from "shared/composables/breakpoints"
 
 interface Props {
   show: boolean
@@ -25,7 +26,9 @@ const page = ref(1)
 const limit = ref(10)
 const keyword = ref("")
 
-const columns: DataTableColumn<AdminProblemRow>[] = [
+const { isMobile } = useBreakpoints()
+
+const allColumns: DataTableColumn<AdminProblemRow>[] = [
   { title: "题号", key: "_id", width: 90 },
   {
     title: "题目",
@@ -51,6 +54,15 @@ const columns: DataTableColumn<AdminProblemRow>[] = [
   },
 ]
 
+// 手机上放不下四列：不摆「学生看得到」，题号收窄，题目吃剩下的宽度
+const mobileColumns: DataTableColumn<AdminProblemRow>[] = [
+  { ...allColumns[0], width: 64 } as DataTableColumn<AdminProblemRow>,
+  { ...allColumns[1], minWidth: undefined } as DataTableColumn<AdminProblemRow>,
+  { ...allColumns[3], width: 64 } as DataTableColumn<AdminProblemRow>,
+]
+
+const columns = computed(() => (isMobile.value ? mobileColumns : allColumns))
+
 async function listProblems() {
   if (page.value < 1) page.value = 1
   const offset = (page.value - 1) * limit.value
@@ -117,7 +129,7 @@ watchDebounced(
         <span>共 {{ total }} 道题</span>
         <n-input
           v-model:value="keyword"
-          style="width: 220px"
+          :style="{ width: isMobile ? '160px' : '220px' }"
           placeholder="题号或题目名"
           clearable
         />
diff --git a/apps/web/src/admin/problem/detail.vue b/apps/web/src/admin/problem/detail.vue
index 0b46bbe..2f61c3d 100644
--- a/apps/web/src/admin/problem/detail.vue
+++ b/apps/web/src/admin/problem/detail.vue
@@ -1707,4 +1707,42 @@ onMounted(async () => {
   border-radius: 6px;
   overflow: hidden;
 }
+
+/* 手机：卡片收窄，挤在一行的东西折下去 */
+@media (max-width: 768px) {
+  .card {
+    padding: 12px;
+  }
+
+  /* 编号 + 题目一行，难度 + 可见折到第二行 */
+  .headRow {
+    flex-wrap: wrap;
+  }
+
+  .headRow .grow {
+    flex: 1 1 180px;
+  }
+
+  .io {
+    grid-template-columns: minmax(0, 1fr);
+  }
+
+  /* 老题面里的图片带着写死的像素宽（有 1118px 的），把整页撑出横向滚动 */
+  .card :deep(.w-e-image-container) {
+    max-width: 100%;
+    height: auto !important;
+  }
+
+  .card :deep(.w-e-image-container img) {
+    height: auto !important;
+  }
+
+  .inlineRow {
+    flex-wrap: wrap;
+  }
+
+  .blockers {
+    -webkit-line-clamp: 3;
+  }
+}
 </style>
diff --git a/apps/web/src/admin/problem/list.vue b/apps/web/src/admin/problem/list.vue
index 3a9bb4d..24605c7 100644
--- a/apps/web/src/admin/problem/list.vue
+++ b/apps/web/src/admin/problem/list.vue
@@ -15,6 +15,7 @@ import BatchTagModal from "./components/BatchTagModal.vue"
 import CreateProblemMenu from "./components/CreateProblemMenu.vue"
 import PageHeader from "admin/components/PageHeader.vue"
 import ProblemTypeTag from "oj/problem/components/ProblemTypeTag.vue"
+import { useBreakpoints } from "shared/composables/breakpoints"
 
 /**
  * 后台题目列表（设计稿「后台题目列表」PlA / PlB）。一行一道题：题号、题目（点了就是编辑）、
@@ -32,6 +33,7 @@ const props = defineProps<Props>()
 const route = useRoute()
 const router = useRouter()
 const theme = useThemeVars()
+const { isMobile } = useBreakpoints()
 
 const title = computed(
   () =>
@@ -96,7 +98,7 @@ const { query, clearQuery } = usePagination<ProblemQuery>({
 })
 
 const counts = ref<{ all: number; visible: number; hidden: number } | null>(null)
-// 手机上后台左边还有一列图标，三个按钮放不下、「藏着的」被切掉：换小号，再不够就横着滑
+// 手机上三个按钮放不下、「藏着的」被切掉：换小号，再不够就横着滑
 const narrow = useMediaQuery("(max-width: 640px)")
 const visibleTabs = computed(() => [
   { value: "" as const, label: "全部", count: counts.value?.all },
@@ -206,11 +208,62 @@ const baseColumns: DataTableColumn<AdminProblemRow>[] = [
   },
 ]
 
-const columns = computed<DataTableColumn<AdminProblemRow>[]>(() =>
-  isContestProblemList.value
-    ? baseColumns.filter((it) => !("key" in it) || it.key !== "users")
-    : [{ type: "selection" }, ...baseColumns],
-)
+/**
+ * 手机上一道题一张卡：题号 + 题目一行，知识点 / 人数 / 出题人 / 日期一行小字，操作按钮一行；
+ * 「学生看得到」开关单独一列靠右，不用横着滑就能点到
+ */
+function renderMobileCard(row: AdminProblemRow) {
+  const meta = [
+    row.tags.length
+      ? row.tags.slice(0, 2).join("、") + (row.tags.length > 2 ? ` +${row.tags.length - 2}` : "")
+      : null,
+    isContestProblemList.value
+      ? null
+      : row.triedUsers
+        ? `做对 ${row.solvedUsers} / ${row.triedUsers}`
+        : "没人做过",
+    row.username,
+    parseTime(row.createTime, "YYYY-MM-DD"),
+  ].filter((it): it is string => !!it)
+  return h("div", { class: "m-card" }, [
+    h("div", { class: "m-head" }, [h("span", { class: "did" }, row._id), renderTitle(row)]),
+    // 每一项自己不断开（「做对 8 / 14」折成两半看不懂），放不下整项换行
+    h(
+      "div",
+      { class: "m-meta muted" },
+      meta.map((text, i) => h("span", { class: "m-item", key: i }, i ? ` · ${text}` : text)),
+    ),
+    h(Actions, {
+      problemID: row.id,
+      problemDisplayID: row._id,
+      triedUsers: row.triedUsers,
+      onUpdated: listProblems,
+    }),
+  ])
+}
+
+const mobileColumns: DataTableColumn<AdminProblemRow>[] = [
+  { title: "题目", key: "title", render: renderMobileCard },
+  {
+    title: "看得到",
+    key: "visible",
+    width: 72,
+    align: "center",
+    render: (row) =>
+      h(NSwitch, {
+        value: row.visible,
+        rubberBand: false,
+        onUpdateValue: () => toggleVisible(row.id),
+      }),
+  },
+]
+
+const columns = computed<DataTableColumn<AdminProblemRow>[]>(() => {
+  const cols = isMobile.value ? mobileColumns : baseColumns
+  return isContestProblemList.value
+    ? cols.filter((it) => !("key" in it) || it.key !== "users")
+    : [{ type: "selection" }, ...cols]
+})
 
 async function listProblems() {
   if (query.page < 1) query.page = 1
@@ -312,7 +365,7 @@ watch(() => [query.page, query.limit, query.author, query.kind, query.visible],
         v-model:value="query.keyword"
         placeholder="题号或题目名"
         clearable
-        style="width: 220px"
+        :style="{ width: isMobile ? '100%' : '220px' }"
         @clear="clearQuery"
       />
       <n-select
@@ -385,6 +438,7 @@ watch(() => [query.page, query.limit, query.author, query.kind, query.visible],
   border: 1px solid v-bind("theme.successColorSuppl");
   background: v-bind("theme.hoverColor");
   white-space: nowrap;
+  flex-wrap: wrap;
 }
 
 .spacer {
@@ -409,6 +463,7 @@ watch(() => [query.page, query.limit, query.author, query.kind, query.visible],
 
 .problem-table :deep(.did) {
   font-weight: 600;
+  white-space: nowrap;
   font-variant-numeric: tabular-nums;
 }
 
@@ -456,6 +511,28 @@ watch(() => [query.page, query.limit, query.author, query.kind, query.visible],
   font-size: 12px;
 }
 
+.problem-table :deep(.m-card) {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  min-width: 0;
+}
+
+.problem-table :deep(.m-head) {
+  display: flex;
+  align-items: baseline;
+  gap: 8px;
+}
+
+.problem-table :deep(.m-meta) {
+  font-size: 13px;
+  line-height: 1.5;
+}
+
+.problem-table :deep(.m-item) {
+  white-space: nowrap;
+}
+
 .problem-table :deep(.num) {
   font-variant-numeric: tabular-nums;
   white-space: nowrap;
diff --git a/apps/web/src/admin/problem/tags.vue b/apps/web/src/admin/problem/tags.vue
index 9cc913a..71cb1fc 100644
--- a/apps/web/src/admin/problem/tags.vue
+++ b/apps/web/src/admin/problem/tags.vue
@@ -301,4 +301,34 @@ watchDebounced(keyword, listTags, { debounce: 500, maxWait: 1000 })
 .empty {
   margin: 16px 0;
 }
+
+/* 手机：两栏上下排；题数条不画，名字吃剩下的宽度，三个按钮放得下 */
+@media (max-width: 768px) {
+  .columns {
+    flex-direction: column;
+    align-items: stretch;
+  }
+
+  .column {
+    flex: none;
+  }
+
+  .row {
+    gap: 6px;
+    padding: 0 0 0 6px;
+  }
+
+  .name {
+    flex: 1 1 auto;
+  }
+
+  .bar {
+    display: none;
+  }
+
+  .count {
+    width: auto;
+    white-space: nowrap;
+  }
+}
 </style>
diff --git a/apps/web/src/admin/problemset/edit.vue b/apps/web/src/admin/problemset/edit.vue
index 4fcf0a5..6071f90 100644
--- a/apps/web/src/admin/problemset/edit.vue
+++ b/apps/web/src/admin/problemset/edit.vue
@@ -817,4 +817,20 @@ onMounted(load)
   padding: 16px 0;
   text-align: center;
 }
+
+/* 手机：奖章一行放不下说明，藏掉，名字吃剩下的宽度 */
+@media (max-width: 768px) {
+  .picker-head b {
+    flex-shrink: 0;
+  }
+
+  .item.badge .grow {
+    display: none;
+  }
+
+  .item.badge .badge-name {
+    flex: 1 1 auto;
+    width: auto;
+  }
+}
 </style>
diff --git a/apps/web/src/admin/problemset/list.vue b/apps/web/src/admin/problemset/list.vue
index 774d384..fe05f77 100644
--- a/apps/web/src/admin/problemset/list.vue
+++ b/apps/web/src/admin/problemset/list.vue
@@ -5,13 +5,16 @@ import { usePagination } from "shared/composables/pagination"
 import { parseTime } from "utils/functions"
 import type { AdminProblemSet } from "utils/types"
 import { getProblemSetList, toggleProblemSetVisible } from "../api"
-import { NButton, NSwitch, NTag } from "naive-ui"
+import { NButton, NSwitch, NTag, useThemeVars } from "naive-ui"
+import { useBreakpoints } from "shared/composables/breakpoints"
 
 /**
  * 后台题单列表。难度、状态两列和筛选拿掉了（线上全是简单 / 活跃，「状态 + 可见」合成了「公开」），
  * 换成老师真正关心的：几道题、多少人加入 / 做完、布置到哪天。点一行进一屏编辑
  */
 const router = useRouter()
+const theme = useThemeVars()
+const { isMobile } = useBreakpoints()
 const total = ref(0)
 const problemSets = ref<AdminProblemSet[]>([])
 
@@ -21,14 +24,60 @@ function edit(row: AdminProblemSet) {
   router.push({ name: "admin problemset edit", params: { problemSetId: row.id } })
 }
 
-const columns: DataTableColumn<AdminProblemSet>[] = [
+function renderTitle(row: AdminProblemSet) {
+  return h(NButton, { text: true, onClick: () => edit(row) }, { default: () => row.title })
+}
+
+function renderAssigned(row: AdminProblemSet) {
+  return row.assigning
+    ? h(
+        NTag,
+        { type: "info", size: "small", bordered: false },
+        { default: () => `到 ${parseTime(row.assignedUntil!, "M月D日")}` },
+      )
+    : "—"
+}
+
+function renderVisible(row: AdminProblemSet) {
+  return h(NSwitch, {
+    value: row.visible,
+    size: isMobile.value ? "medium" : "small",
+    rubberBand: false,
+    onUpdateValue: () => toggleVisible(row.id),
+  })
+}
+
+/** 手机上一个题单一张卡：名字一行（点了编辑），题数 · 加入 / 做完 · 奖章 · 创建者 · 日期一行小字 */
+function renderMobileCard(row: AdminProblemSet) {
+  const items = [
+    `${row.problemsCount} 道题`,
+    `${row.participantCount} 人加入 · ${row.completedCount} 人做完`,
+    row.badgeCount ? `${row.badgeCount} 个奖章` : null,
+    row.createdBy.username,
+    parseTime(row.createTime, "YYYY-MM-DD"),
+  ].filter((it): it is string => !!it)
+  return h("div", { class: "m-card" }, [
+    h("div", { class: "m-head" }, [renderTitle(row), row.assigning ? renderAssigned(row) : null]),
+    h(
+      "div",
+      { class: "m-meta" },
+      items.map((text, i) => h("span", { class: "m-item", key: i }, i ? ` · ${text}` : text)),
+    ),
+  ])
+}
+
+const mobileColumns: DataTableColumn<AdminProblemSet>[] = [
+  { title: "题单", key: "title", render: renderMobileCard },
+  { title: "公开", key: "visible", width: 72, align: "center", render: renderVisible },
+]
+
+const desktopColumns: DataTableColumn<AdminProblemSet>[] = [
   { title: "ID", key: "id", width: 70 },
   {
     title: "题单",
     key: "title",
     minWidth: 200,
-    render: (row) =>
-      h(NButton, { text: true, onClick: () => edit(row) }, { default: () => row.title }),
+    render: renderTitle,
   },
   { title: "题数", key: "problemsCount", width: 70 },
   {
@@ -42,14 +91,7 @@ const columns: DataTableColumn<AdminProblemSet>[] = [
     title: "布置",
     key: "assignedUntil",
     width: 130,
-    render: (row) =>
-      row.assigning
-        ? h(
-            NTag,
-            { type: "info", size: "small", bordered: false },
-            { default: () => `到 ${parseTime(row.assignedUntil!, "M月D日")}` },
-          )
-        : "—",
+    render: renderAssigned,
   },
   {
     title: "创建者",
@@ -67,16 +109,12 @@ const columns: DataTableColumn<AdminProblemSet>[] = [
     title: "公开",
     key: "visible",
     width: 80,
-    render: (row) =>
-      h(NSwitch, {
-        value: row.visible,
-        size: "small",
-        rubberBand: false,
-        onUpdateValue: () => toggleVisible(row.id),
-      }),
+    render: renderVisible,
   },
 ]
 
+const columns = computed(() => (isMobile.value ? mobileColumns : desktopColumns))
+
 async function listProblemSets() {
   if (query.page < 1) query.page = 1
   const offset = (query.page - 1) * query.limit
@@ -108,10 +146,37 @@ watch(() => [query.page, query.limit], listProblemSets)
         placeholder="搜题单名字"
         clearable
         @clear="clearQuery"
-        style="width: 220px"
+        :style="{ width: isMobile ? '100%' : '220px' }"
       />
     </template>
   </PageHeader>
-  <n-data-table striped :columns="columns" :data="problemSets" />
+  <n-data-table striped class="set-table" :columns="columns" :data="problemSets" />
   <Pagination :total="total" v-model:limit="query.limit" v-model:page="query.page" />
 </template>
+
+<style scoped>
+.set-table :deep(.m-card) {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  min-width: 0;
+}
+
+.set-table :deep(.m-head) {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 8px;
+  font-weight: 500;
+}
+
+.set-table :deep(.m-meta) {
+  font-size: 13px;
+  line-height: 1.5;
+  color: v-bind("theme.textColor3");
+}
+
+.set-table :deep(.m-item) {
+  white-space: nowrap;
+}
+</style>
diff --git a/apps/web/src/admin/setting/config.vue b/apps/web/src/admin/setting/config.vue
index aa5ff9d..f6a5381 100644
--- a/apps/web/src/admin/setting/config.vue
+++ b/apps/web/src/admin/setting/config.vue
@@ -212,7 +212,7 @@ onMounted(() => {
     <h3>
       班级 <span class="count">{{ websiteConfig.classList.length }} 个</span>
     </h3>
-    <div v-for="group in classGroups" :key="group.grade" class="grade">
+    <div v-for="group in classGroups" :key="group.grade" class="grade listed">
       <span class="grade-label">{{ group.grade === "其他" ? "其他" : `${group.grade} 级` }}</span>
       <div class="chips">
         <n-tag
@@ -417,4 +417,21 @@ h3 {
 .mono {
   font-family: Consolas, Monaco, monospace;
 }
+
+/* 手机：班多的年级整排折到年级名下面去了，和班少的年级对不齐；班级在年级名右边自己折行 */
+@media (max-width: 768px) {
+  .grade.listed {
+    flex-wrap: nowrap;
+    align-items: flex-start;
+  }
+
+  .grade.listed .grade-label {
+    line-height: 28px;
+  }
+
+  .grade .chips {
+    flex: 1 1 auto;
+    min-width: 0;
+  }
+}
 </style>
diff --git a/apps/web/src/admin/setting/home.vue b/apps/web/src/admin/setting/home.vue
index 2825861..e5f4294 100644
--- a/apps/web/src/admin/setting/home.vue
+++ b/apps/web/src/admin/setting/home.vue
@@ -226,7 +226,7 @@ onUnmounted(stopRolling)
       filterable
       placeholder="选班级"
       aria-label="班级"
-      style="width: 160px"
+      class="lucky-select"
     />
     <span :key="pulseKey" class="lucky-name" :class="{ pulse: !isRolling && luckyGuy }">
       {{ luckyGuy }}
@@ -353,6 +353,10 @@ onUnmounted(stopRolling)
   border: 1px solid v-bind("theme.dividerColor");
 }
 
+.lucky-select {
+  width: 160px;
+}
+
 .lucky-title {
   font-size: 15px;
 }
@@ -386,4 +390,24 @@ onUnmounted(stopRolling)
     grid-template-columns: repeat(2, minmax(0, 1fr));
   }
 }
+
+/* 手机上一行放不下：标题 + 选班一行，抽到的名字和按钮各占一整行 */
+@media (max-width: 768px) {
+  .lucky {
+    display: grid;
+    grid-template-columns: auto minmax(0, 1fr);
+    gap: 12px;
+    box-sizing: border-box;
+    width: 100%;
+  }
+
+  .lucky-select {
+    width: 100%;
+  }
+
+  .lucky-name,
+  .lucky > .n-button {
+    grid-column: 1 / -1;
+  }
+}
 </style>
diff --git a/apps/web/src/admin/tutorial/components/ExerciseManager.vue b/apps/web/src/admin/tutorial/components/ExerciseManager.vue
index 3974803..be563e9 100644
--- a/apps/web/src/admin/tutorial/components/ExerciseManager.vue
+++ b/apps/web/src/admin/tutorial/components/ExerciseManager.vue
@@ -693,6 +693,7 @@ function typeName(type: ExerciseType) {
 .sub a {
   color: #18a058;
   text-decoration: none;
+  white-space: nowrap;
 }
 .sub a.danger {
   color: #d03050;
diff --git a/apps/web/src/admin/tutorial/detail.vue b/apps/web/src/admin/tutorial/detail.vue
index 71ecb55..baabce4 100644
--- a/apps/web/src/admin/tutorial/detail.vue
+++ b/apps/web/src/admin/tutorial/detail.vue
@@ -17,6 +17,7 @@ import {
 } from "../api"
 import ExerciseManager from "./components/ExerciseManager.vue"
 import RelatedProblems from "./components/RelatedProblems.vue"
+import { useBreakpoints } from "shared/composables/breakpoints"
 
 /**
  * 编辑一课（设计稿「后台 · 编辑一课」）：知识点 / 情境 / 项目三个字段，正文左边写、
@@ -31,6 +32,10 @@ const message = useMessage()
 
 const isCreate = computed(() => route.name === "admin tutorial create")
 
+// 手机上左右分栏各剩一百多像素，改成正文「写 / 预览」切着看
+const { isMobile } = useBreakpoints()
+const pane = ref<"source" | "preview">("source")
+
 const tutorial = reactive<TutorialEdit>({
   id: 0,
   title: "",
@@ -197,8 +202,15 @@ onMounted(init)
         <div class="card-head">
           <span class="strong">正文</span>
           <span class="muted">Markdown</span>
+          <template v-if="isMobile">
+            <span class="grow" />
+            <n-radio-group v-model:value="pane" size="small">
+              <n-radio-button value="source">写</n-radio-button>
+              <n-radio-button value="preview">预览</n-radio-button>
+            </n-radio-group>
+          </template>
         </div>
-        <div class="split">
+        <div class="split" :class="isMobile ? `only-${pane}` : ''">
           <div class="source">
             <MarkdownEditor
               ref="editor"
@@ -355,4 +367,53 @@ onMounted(init)
   gap: 14px;
   overflow-y: auto;
 }
+
+/* 手机：整页跟着滚，正文一次只露写或预览，练一练和相关题排到下面 */
+@media (max-width: 768px) {
+  .page {
+    height: auto;
+    min-height: 0;
+  }
+  .top {
+    flex-wrap: wrap;
+    gap: 8px;
+  }
+  .field {
+    width: 100%;
+  }
+  .field > span {
+    width: 3em;
+    flex-shrink: 0;
+  }
+  .field > :deep(.n-input),
+  .field > :deep(.n-base-selection),
+  .field > :deep(.n-select) {
+    flex: 1;
+    width: auto !important;
+    min-width: 0;
+  }
+  .work {
+    flex-direction: column;
+  }
+  .editor-card {
+    flex: none;
+    height: 70vh;
+  }
+  .only-source .preview,
+  .only-preview .source {
+    display: none;
+  }
+  .split .source,
+  .split .preview {
+    flex-basis: 100%;
+    border-right: 0;
+  }
+  .preview {
+    padding: 12px;
+  }
+  .side {
+    width: auto;
+    overflow-y: visible;
+  }
+}
 </style>
diff --git a/apps/web/src/admin/tutorial/list.vue b/apps/web/src/admin/tutorial/list.vue
index c16c357..10f4376 100644
--- a/apps/web/src/admin/tutorial/list.vue
+++ b/apps/web/src/admin/tutorial/list.vue
@@ -169,7 +169,7 @@ onMounted(load)
         <span class="c-drag" />
         <span class="c-no">#</span>
         <span class="c-title">知识点 · 情境</span>
-        <span class="c-num">练一练</span>
+        <span class="c-num c-ex">练一练</span>
         <span class="c-num">相关题</span>
         <span class="c-num wide">打开过的人</span>
         <span class="c-switch">公开</span>
@@ -230,7 +230,7 @@ onMounted(load)
               <span class="kp">{{ splitTitle(item.title).kp }}</span>
               <span class="scene">{{ splitTitle(item.title).scene }}</span>
             </span>
-            <span class="c-num num">{{ item.exerciseCount || "-" }}</span>
+            <span class="c-num c-ex num">{{ item.exerciseCount || "-" }}</span>
             <span class="c-num num">
               <template v-if="item.problemCount">{{ item.problemCount }}</template>
               <span v-else class="warn">还没挑</span>
@@ -426,4 +426,49 @@ onMounted(load)
   color: #18a058;
   text-decoration: none;
 }
+
+/* 手机：拖动排序（触屏拖不动）、练一练数、打开过的人、情境都不摆，留 知识点 / 相关题 / 公开 / 编辑 */
+@media (max-width: 768px) {
+  .top {
+    flex-wrap: wrap;
+    gap: 8px;
+  }
+  .title,
+  .seg button {
+    white-space: nowrap;
+  }
+  .row {
+    gap: 8px;
+    padding: 0 12px;
+  }
+  .grouprow {
+    flex-wrap: wrap;
+    height: auto;
+    min-height: 44px;
+    padding: 8px 12px;
+  }
+  .grouprow a {
+    white-space: nowrap;
+  }
+  .c-drag,
+  .c-ex,
+  .c-num.wide,
+  .scene {
+    display: none;
+  }
+  .kp {
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+  .c-num {
+    width: 48px;
+  }
+  .c-switch {
+    width: 44px;
+  }
+  .c-edit {
+    width: auto;
+    white-space: nowrap;
+  }
+}
 </style>
diff --git a/apps/web/src/admin/user/components/Actions.vue b/apps/web/src/admin/user/components/Actions.vue
index 846d9f7..4dea997 100644
--- a/apps/web/src/admin/user/components/Actions.vue
+++ b/apps/web/src/admin/user/components/Actions.vue
@@ -1,6 +1,7 @@
 <script lang="ts" setup>
 import { editUser } from "admin/api"
 import type { AdminUserForm } from "utils/types"
+import { useBreakpoints } from "shared/composables/breakpoints"
 
 /**
  * 用户列表一行的操作：重置密码、编辑、禁用、删除直接摆出来（用户说的：不要收进 ⋯）。
@@ -18,6 +19,8 @@ const emit = defineEmits<{
 }>()
 
 const dialog = useDialog()
+// 手机上在卡片里，放不下一行就折下去
+const { isMobile } = useBreakpoints()
 
 async function banUser() {
   props.user.isDisabled = !props.user.isDisabled
@@ -36,7 +39,7 @@ function confirmDelete() {
 }
 </script>
 <template>
-  <n-flex :size="6" :wrap="false">
+  <n-flex :size="6" :wrap="isMobile">
     <n-button size="small" @click="emit('resetPassword', props.user)">重置密码</n-button>
     <n-button size="small" @click="emit('openEditModal', props.user)">编辑</n-button>
     <n-button size="small" @click="banUser">
diff --git a/apps/web/src/admin/user/generate.vue b/apps/web/src/admin/user/generate.vue
index c985ac6..70e4c41 100644
--- a/apps/web/src/admin/user/generate.vue
+++ b/apps/web/src/admin/user/generate.vue
@@ -11,6 +11,7 @@ import {
 } from "utils/constants"
 import { parseTime } from "utils/functions"
 import { checkUsernames, importUsers } from "../api"
+import { useBreakpoints } from "shared/composables/breakpoints"
 
 /**
  * 批量建号（设计稿「后台用户与批量建号」UsGen / UsGenIssue / UsDone）。
@@ -21,6 +22,8 @@ import { checkUsernames, importUsers } from "../api"
  * 一个 CSV，Excel 打开中文还是乱码。新班级后端会顺手加进班级列表。
  */
 const message = useMessage()
+// 手机上左右两栏改成上下：先填班级和名单，预览排在下面
+const { isMobile } = useBreakpoints()
 
 const classNo = ref("")
 const rawInput = ref("")
@@ -237,7 +240,7 @@ body{margin:12mm;font-family:"Microsoft YaHei","PingFang SC",sans-serif}
         v-model:value="rawInput"
         type="textarea"
         :input-props="{ id: 'names' }"
-        :rows="20"
+        :rows="isMobile ? 8 : 20"
         placeholder="一行一个名字"
       />
     </div>
@@ -303,7 +306,11 @@ body{margin:12mm;font-family:"Microsoft YaHei","PingFang SC",sans-serif}
           </n-text>
         </div>
       </template>
-      <n-empty v-else description="左边粘进名单，这里就列出会建成的账号" style="margin-top: 80px" />
+      <n-empty
+        v-else
+        :description="`${isMobile ? '上面' : '左边'}粘进名单，这里就列出会建成的账号`"
+        :style="{ marginTop: isMobile ? '24px' : '80px' }"
+      />
     </div>
   </div>
 </template>
@@ -445,6 +452,26 @@ body{margin:12mm;font-family:"Microsoft YaHei","PingFang SC",sans-serif}
   gap: 8px;
 }
 
+@media (max-width: 768px) {
+  .layout {
+    flex-direction: column;
+    align-items: stretch;
+  }
+
+  .left {
+    width: auto;
+  }
+
+  .done-bar {
+    flex-wrap: wrap;
+    white-space: normal;
+  }
+
+  .slips {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+}
+
 .slip {
   border: 1px dashed rgba(128, 128, 128, 0.5);
   border-radius: 4px;
diff --git a/apps/web/src/admin/user/list.vue b/apps/web/src/admin/user/list.vue
index 53104fb..465f1d8 100644
--- a/apps/web/src/admin/user/list.vue
+++ b/apps/web/src/admin/user/list.vue
@@ -15,6 +15,7 @@ import { useRouteQuery } from "@vueuse/router"
 import { NO_CLASS } from "@oj2/contract"
 import { classLabel, groupClassOptions } from "oj/submission/utils"
 import { useConfigStore } from "shared/store/config"
+import { useBreakpoints } from "shared/composables/breakpoints"
 
 /**
  * 后台用户列表（设计稿「后台用户与批量建号」UsList）。老师进来多半是三件事：学生忘了密码、
@@ -24,6 +25,7 @@ import { useConfigStore } from "shared/store/config"
 const message = useMessage()
 const theme = useThemeVars()
 const configStore = useConfigStore()
+const { isMobile } = useBreakpoints()
 
 interface UserQuery {
   keyword: string
@@ -91,7 +93,56 @@ function lastLoginText(row: AdminUserForm) {
   ])
 }
 
-const columns: DataTableColumn<AdminUserForm>[] = [
+function renderPassword(row: AdminUserForm) {
+  return h(PasswordCell, {
+    user: row,
+    revealed: revealedPasswords.value.has(row.id),
+    onToggle: (id: number) => {
+      if (!revealedPasswords.value.delete(id)) revealedPasswords.value.add(id)
+    },
+  })
+}
+
+function renderActions(row: AdminUserForm) {
+  return h(Actions, {
+    user: row,
+    onDeleteUser: onDeleteUsers,
+    onUserBanned,
+    onOpenEditModal,
+    onResetPassword,
+  })
+}
+
+/**
+ * 手机上一个人一张卡：用户名一行，班级 · 上次登录 · 建号一行小字（每项不断开），
+ * 密码单独一行（学生忘了密码是最常见的事，要一眼找到），操作按钮放不下就折行
+ */
+function renderMobileCard(row: AdminUserForm) {
+  return h("div", { class: "m-card" }, [
+    h(UserNameCell, { user: row }),
+    h("div", { class: "m-meta muted" }, [
+      h("span", { class: "m-item" }, row.className ? classLabel(row.className) : "没填班级"),
+      h("span", { class: "m-item" }, [" · ", lastLoginText(row)]),
+      row.createTime
+        ? h("span", { class: "m-item" }, ` · 建号 ${parseTime(row.createTime, "YYYY-MM-DD")}`)
+        : null,
+    ]),
+    row.rawPassword
+      ? h("div", { class: "m-password" }, [
+          h("span", { class: "muted" }, "密码"),
+          renderPassword(row),
+        ])
+      : null,
+    renderActions(row),
+  ])
+}
+
+const mobileColumns: DataTableColumn<AdminUserForm>[] = [
+  { type: "selection" },
+  { title: "用户", key: "username", render: renderMobileCard },
+]
+
+const desktopColumns: DataTableColumn<AdminUserForm>[] = [
   { type: "selection" },
   {
     title: "用户名",
@@ -111,14 +162,7 @@ const columns: DataTableColumn<AdminUserForm>[] = [
     title: "密码",
     key: "raw_password",
     width: 150,
-    render: (row) =>
-      h(PasswordCell, {
-        user: row,
-        revealed: revealedPasswords.value.has(row.id),
-        onToggle: (id: number) => {
-          if (!revealedPasswords.value.delete(id)) revealedPasswords.value.add(id)
-        },
-      }),
+    render: renderPassword,
   },
   { title: "上次登录", key: "last_login", width: 150, render: lastLoginText },
   {
@@ -136,17 +180,12 @@ const columns: DataTableColumn<AdminUserForm>[] = [
     key: "actions",
     title: "",
     minWidth: 300,
-    render: (row) =>
-      h(Actions, {
-        user: row,
-        onDeleteUser: onDeleteUsers,
-        onUserBanned,
-        onOpenEditModal,
-        onResetPassword,
-      }),
+    render: renderActions,
   },
 ]
 
+const columns = computed(() => (isMobile.value ? mobileColumns : desktopColumns))
+
 const options: SelectOption[] = [
   { label: "普通", value: USER_TYPE.REGULAR_USER },
   { label: "学生管理员", value: USER_TYPE.STUDENT_ADMIN },
@@ -314,7 +353,7 @@ watch(() => [query.page, query.limit, query.type, query.orderBy, query.className
     </template>
     <template #filters>
       <n-input
-        style="width: 220px"
+        :style="{ width: isMobile ? '100%' : '220px' }"
         v-model:value="query.keyword"
         placeholder="用户名或名字"
         clearable
@@ -363,7 +402,7 @@ watch(() => [query.page, query.limit, query.type, query.orderBy, query.className
     @close="onCloseEditModal"
   >
     <n-form label-placement="left" v-if="userEditing">
-      <n-grid :cols="2" :x-gap="16">
+      <n-grid :cols="isMobile ? 1 : 2" :x-gap="16">
         <n-form-item-gi :span="1" label="用户">
           <n-input v-model:value="userEditing.username" />
         </n-form-item-gi>
@@ -420,6 +459,29 @@ watch(() => [query.page, query.limit, query.type, query.orderBy, query.className
   color: v-bind("theme.textColor3");
 }
 
+.user-table :deep(.m-card) {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  min-width: 0;
+}
+
+.user-table :deep(.m-meta) {
+  font-size: 13px;
+  line-height: 1.5;
+}
+
+.user-table :deep(.m-item) {
+  white-space: nowrap;
+}
+
+.user-table :deep(.m-password) {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-size: 13px;
+}
+
 .user-table :deep(.num) {
   font-variant-numeric: tabular-nums;
   white-space: nowrap;
diff --git a/apps/web/src/index.css b/apps/web/src/index.css
index 07270a3..8f98189 100644
--- a/apps/web/src/index.css
+++ b/apps/web/src/index.css
@@ -50,3 +50,8 @@ body {
   animation: none;
   mix-blend-mode: normal;
 }
+
+/* 弹框各写各的定宽（420～820px），手机上一律收进屏幕里，左右各留 16px */
+.n-modal {
+  max-width: calc(100vw - 32px);
+}
diff --git a/apps/web/src/shared/layout/admin.vue b/apps/web/src/shared/layout/admin.vue
index 05f3c0a..61a4b1e 100644
--- a/apps/web/src/shared/layout/admin.vue
+++ b/apps/web/src/shared/layout/admin.vue
@@ -2,6 +2,7 @@
 import { h } from "vue"
 import { Icon } from "@iconify/vue"
 import { RouterLink } from "vue-router"
+import { useBackClose } from "shared/composables/backClose"
 import { useBreakpoints } from "shared/composables/breakpoints"
 import { useDarkTransition } from "shared/composables/darkTransition"
 import { STORAGE_KEY } from "utils/constants"
@@ -153,9 +154,9 @@ function toOption(i: NavItem): MenuOption {
   }
 }
 
-// 收起时 64px 放不下分组标题（会折成两行），换成分隔线
+// 收起时 64px 放不下分组标题（会折成两行），换成分隔线。手机上菜单在抽屉里，总是展开的
 const options = computed<MenuOption[]>(() =>
-  siderCollapsed.value
+  collapsed.value && !isMobile.value
     ? groups.value.flatMap((g, idx) => [
         ...(idx ? [{ type: "divider", key: `divider-${g.label}` }] : []),
         ...g.items.map(toOption),
@@ -188,12 +189,12 @@ const current = computed(() => {
 
 const collapsed = ref<boolean>(storage.get(STORAGE_KEY.ADMIN_SIDER_COLLAPSED) ?? false)
 watch(collapsed, (v) => storage.set(STORAGE_KEY.ADMIN_SIDER_COLLAPSED, v))
-// 窄屏一律收起，不写回偏好 —— 手机上看一眼不该改掉桌面端的习惯
-const siderCollapsed = computed({
-  get: () => isMobile.value || collapsed.value,
-  set: (v) => {
-    if (!isMobile.value) collapsed.value = v
-  },
+// 手机上不留侧栏（64px 的图标条占了 390 宽屏的六分之一），菜单收进左边滑出的抽屉。
+// 按返回键先关抽屉；在抽屉里点了一项，useBackClose 会先关它再跳
+const menuOpen = ref(false)
+useBackClose(menuOpen, isMobile)
+watch(isMobile, (m) => {
+  if (!m) menuOpen.value = false
 })
 
 const userOptions: DropdownOption[] = [
@@ -227,22 +228,23 @@ onMounted(async () => {
 <template>
   <n-layout has-sider position="absolute">
     <n-layout-sider
+      v-if="!isMobile"
       bordered
       collapse-mode="width"
       :collapsed-width="64"
       :width="200"
       :native-scrollbar="false"
-      :show-trigger="isMobile ? false : 'bar'"
-      v-model:collapsed="siderCollapsed"
+      show-trigger="bar"
+      v-model:collapsed="collapsed"
     >
-      <RouterLink to="/" class="brand" :class="{ collapsed: siderCollapsed }" title="回到前台">
+      <RouterLink to="/" class="brand" :class="{ collapsed: collapsed }" title="回到前台">
         <Icon icon="streamline-emojis:dog" :height="28" />
-        <span v-if="!siderCollapsed" class="brandText">后台管理</span>
+        <span v-if="!collapsed" class="brandText">后台管理</span>
       </RouterLink>
       <n-menu
         :options="options"
         :value="current?.item.path ?? null"
-        :collapsed="siderCollapsed"
+        :collapsed="collapsed"
         :collapsed-width="64"
         :collapsed-icon-size="20"
         :indent="20"
@@ -250,8 +252,29 @@ onMounted(async () => {
       />
     </n-layout-sider>
 
+    <n-drawer v-if="isMobile" v-model:show="menuOpen" placement="left" :width="240">
+      <n-drawer-content :native-scrollbar="false" body-content-style="padding: 0">
+        <RouterLink to="/" class="brand" title="回到前台">
+          <Icon icon="streamline-emojis:dog" :height="28" />
+          <span class="brandText">后台管理</span>
+        </RouterLink>
+        <n-menu
+          :options="options"
+          :value="current?.item.path ?? null"
+          :indent="20"
+          :theme-overrides="{ itemHeight: '44px' }"
+        />
+      </n-drawer-content>
+    </n-drawer>
+
     <n-layout>
-      <n-layout-header bordered class="topbar">
+      <n-layout-header bordered class="topbar" :class="{ mobile: isMobile }">
+        <div v-if="isMobile" class="mobileTitle">
+          <n-button quaternary circle @click="menuOpen = true" title="菜单">
+            <template #icon><Icon icon="ph:list" :width="22" /></template>
+          </n-button>
+          <span class="mobileTitleText">{{ current?.item.label ?? "后台" }}</span>
+        </div>
         <n-breadcrumb v-if="!isMobile">
           <n-breadcrumb-item>后台</n-breadcrumb-item>
           <template v-if="current">
@@ -263,7 +286,6 @@ onMounted(async () => {
             </n-breadcrumb-item>
           </template>
         </n-breadcrumb>
-        <div v-if="isMobile" />
         <n-flex align="center" :size="8" :wrap="false">
           <n-button v-if="!isMobile" quaternary size="small" @click="router.push('/')">
             <template #icon><Icon icon="ph:arrow-square-out" /></template>
@@ -294,7 +316,7 @@ onMounted(async () => {
         position="absolute"
         style="top: 49px"
         :native-scrollbar="false"
-        content-style="padding: 20px 24px"
+        :content-style="isMobile ? 'padding: 16px' : 'padding: 20px 24px'"
       >
         <router-view></router-view>
       </n-layout-content>
@@ -320,6 +342,25 @@ onMounted(async () => {
   padding: 0;
 }
 
+.mobileTitle {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  min-width: 0;
+}
+
+.mobileTitleText {
+  font-size: 16px;
+  font-weight: 600;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.topbar.mobile {
+  padding: 0 8px;
+}
+
 .brandText {
   font-size: 16px;
   font-weight: 600;