diff --git a/IosClientKit/Sources/CoreModel/Auth.swift b/IosClientKit/Sources/CoreModel/Auth.swift
new file mode 100644
index 0000000..667f03e
--- /dev/null
+++ b/IosClientKit/Sources/CoreModel/Auth.swift
@@ -0,0 +1,10 @@
+import Foundation
+
+/// 会话（极简，仅 token）。
+public struct Session: Hashable, Sendable {
+    public let token: String
+
+    public init(token: String) {
+        self.token = token
+    }
+}
diff --git a/IosClientKit/Sources/CoreModel/Checkin.swift b/IosClientKit/Sources/CoreModel/Checkin.swift
new file mode 100644
index 0000000..3996af7
--- /dev/null
+++ b/IosClientKit/Sources/CoreModel/Checkin.swift
@@ -0,0 +1,72 @@
+import Foundation
+
+/// 打卡状态（对应小程序 STATUSES / android CheckinStatus）。
+public enum CheckinStatus: String, CaseIterable, Hashable, Sendable {
+    case normal = "正常"
+    case late = "迟到"
+    case leave = "请假"
+    case absent = "不参加讨论"
+    case earlyLeave = "早退"
+}
+
+/// 小组成员（打卡视角）。
+public struct GroupMember: Identifiable, Hashable, Sendable {
+    public let id: String
+    public let name: String
+    public let checkedIn: Bool
+    public let checkinTime: String?
+    public let status: CheckinStatus?
+
+    public init(id: String, name: String, checkedIn: Bool, checkinTime: String?, status: CheckinStatus?) {
+        self.id = id
+        self.name = name
+        self.checkedIn = checkedIn
+        self.checkinTime = checkinTime
+        self.status = status
+    }
+}
+
+/// 个人打卡历史条目。
+public struct PersonalCheckinRecord: Hashable, Sendable {
+    public let date: String
+    public let status: CheckinStatus
+    public let time: String
+
+    public init(date: String, status: CheckinStatus, time: String) {
+        self.date = date
+        self.status = status
+        self.time = time
+    }
+}
+
+/// 打卡页聚合数据。
+public struct CheckinRecord: Hashable, Sendable {
+    public let classDate: String
+    public let weekday: String
+    public let dayNum: Int
+    public let checked: Bool
+    public let status: CheckinStatus?
+    public let groupName: String
+    public let groupMembers: [GroupMember]
+    public let personalHistory: [PersonalCheckinRecord]
+
+    public init(
+        classDate: String,
+        weekday: String,
+        dayNum: Int,
+        checked: Bool,
+        status: CheckinStatus?,
+        groupName: String,
+        groupMembers: [GroupMember],
+        personalHistory: [PersonalCheckinRecord]
+    ) {
+        self.classDate = classDate
+        self.weekday = weekday
+        self.dayNum = dayNum
+        self.checked = checked
+        self.status = status
+        self.groupName = groupName
+        self.groupMembers = groupMembers
+        self.personalHistory = personalHistory
+    }
+}
diff --git a/IosClientKit/Sources/CoreModel/Habit.swift b/IosClientKit/Sources/CoreModel/Habit.swift
deleted file mode 100644
index a0dc84a..0000000
--- a/IosClientKit/Sources/CoreModel/Habit.swift
+++ /dev/null
@@ -1,27 +0,0 @@
-import Foundation
-
-/// 一个打卡习惯（对应 Android 端 Habit）。
-public struct Habit: Identifiable, Hashable, Sendable {
-    public let id: String
-    public let title: String
-    /// 备注 / 目标描述。
-    public let detail: String
-    /// 今日是否已打卡。
-    public let isCheckedInToday: Bool
-    /// 连续打卡天数。
-    public let streakDays: Int
-
-    public init(
-        id: String,
-        title: String,
-        detail: String,
-        isCheckedInToday: Bool,
-        streakDays: Int
-    ) {
-        self.id = id
-        self.title = title
-        self.detail = detail
-        self.isCheckedInToday = isCheckedInToday
-        self.streakDays = streakDays
-    }
-}
diff --git a/IosClientKit/Sources/CoreModel/HomeData.swift b/IosClientKit/Sources/CoreModel/HomeData.swift
index a76e73f..95bc097 100644
--- a/IosClientKit/Sources/CoreModel/HomeData.swift
+++ b/IosClientKit/Sources/CoreModel/HomeData.swift
@@ -1,19 +1,65 @@
 import Foundation
 
-/// Home 页面的聚合数据（对应 Android 端 HomeData）。
-public struct HomeData: Identifiable, Hashable, Sendable {
-    public let id: String
-    /// 顶部问候语，例如「早上好，Andy」。
-    public let greeting: String
-    /// 今日打卡摘要，例如「已完成 2 / 4」。
-    public let summary: String
-    /// 今日待打卡的习惯列表。
-    public let habits: [Habit]
+/// 首页模块跳转目标。
+public enum ModuleDestination: Hashable, Sendable {
+    case checkin
+    case plan
+    case about
+}
 
-    public init(id: String, greeting: String, summary: String, habits: [Habit]) {
+/// 首页功能模块卡片（打卡介绍 / 计划介绍 / 关于我们）。
+public struct HomeModule: Identifiable, Hashable, Sendable {
+    public let id: String
+    public let emoji: String
+    public let title: String
+    public let description: String
+    public let destination: ModuleDestination
+
+    public init(
+        id: String,
+        emoji: String,
+        title: String,
+        description: String,
+        destination: ModuleDestination
+    ) {
         self.id = id
-        self.greeting = greeting
-        self.summary = summary
-        self.habits = habits
+        self.emoji = emoji
+        self.title = title
+        self.description = description
+        self.destination = destination
+    }
+}
+
+/// 产品介绍卡片。
+public struct IntroCard: Hashable, Sendable {
+    public let title: String
+    public let body: String
+
+    public init(title: String, body: String) {
+        self.title = title
+        self.body = body
+    }
+}
+
+/// 首页聚合数据（落地页）。
+public struct HomeData: Hashable, Sendable {
+    public let greeting: String
+    public let displayName: String
+    public let encouragement: String
+    public let modules: [HomeModule]
+    public let intros: [IntroCard]
+
+    public init(
+        greeting: String,
+        displayName: String,
+        encouragement: String,
+        modules: [HomeModule],
+        intros: [IntroCard]
+    ) {
+        self.greeting = greeting
+        self.displayName = displayName
+        self.encouragement = encouragement
+        self.modules = modules
+        self.intros = intros
     }
 }
diff --git a/IosClientKit/Sources/CoreModel/Plan.swift b/IosClientKit/Sources/CoreModel/Plan.swift
new file mode 100644
index 0000000..4e24e9c
--- /dev/null
+++ b/IosClientKit/Sources/CoreModel/Plan.swift
@@ -0,0 +1,119 @@
+import Foundation
+
+/// 计划类型（周/月/年）。
+public enum PlanType: String, CaseIterable, Hashable, Sendable {
+    case weekly
+    case monthly
+    case yearly
+
+    public var label: String {
+        switch self {
+        case .weekly: return "周计划"
+        case .monthly: return "月计划"
+        case .yearly: return "年计划"
+        }
+    }
+}
+
+/// 我提交的计划记录。
+public struct MyPlanRecord: Hashable, Sendable {
+    public let status: String
+    public let submittedTime: String
+    public let content: String
+    public let attachments: [String]
+
+    public init(status: String, submittedTime: String, content: String, attachments: [String]) {
+        self.status = status
+        self.submittedTime = submittedTime
+        self.content = content
+        self.attachments = attachments
+    }
+}
+
+/// 小组成员（计划视角）。
+public struct PlanMember: Identifiable, Hashable, Sendable {
+    public let id: String
+    public let name: String
+    public let filled: Bool
+
+    public init(id: String, name: String, filled: Bool) {
+        self.id = id
+        self.name = name
+        self.filled = filled
+    }
+}
+
+/// 小组计划统计（含成员）。
+public struct PlanGroup: Identifiable, Hashable, Sendable {
+    public let id: String
+    public let name: String
+    public let checkedCount: Int
+    public let memberCount: Int
+    public let members: [PlanMember]
+
+    public init(id: String, name: String, checkedCount: Int, memberCount: Int, members: [PlanMember]) {
+        self.id = id
+        self.name = name
+        self.checkedCount = checkedCount
+        self.memberCount = memberCount
+        self.members = members
+    }
+}
+
+/// 计划页聚合数据。
+public struct PlanRecord: Hashable, Sendable {
+    public let type: PlanType
+    public let periodKey: String
+    public let canSubmit: Bool
+    public let message: String?
+    public let myChecked: Bool
+    public let myRecord: MyPlanRecord?
+    public let groups: [PlanGroup]
+    public let unassignedCount: Int
+
+    public init(
+        type: PlanType,
+        periodKey: String,
+        canSubmit: Bool,
+        message: String?,
+        myChecked: Bool,
+        myRecord: MyPlanRecord?,
+        groups: [PlanGroup],
+        unassignedCount: Int
+    ) {
+        self.type = type
+        self.periodKey = periodKey
+        self.canSubmit = canSubmit
+        self.message = message
+        self.myChecked = myChecked
+        self.myRecord = myRecord
+        self.groups = groups
+        self.unassignedCount = unassignedCount
+    }
+}
+
+/// 提交计划页数据。
+public struct PlanSubmitData: Hashable, Sendable {
+    public let content: String
+    public let attachments: [String]
+    public let checked: Bool
+    public let canSubmit: Bool
+    public let message: String?
+    public let history: [MyPlanRecord]
+
+    public init(
+        content: String,
+        attachments: [String],
+        checked: Bool,
+        canSubmit: Bool,
+        message: String?,
+        history: [MyPlanRecord]
+    ) {
+        self.content = content
+        self.attachments = attachments
+        self.checked = checked
+        self.canSubmit = canSubmit
+        self.message = message
+        self.history = history
+    }
+}
diff --git a/IosClientKit/Sources/CoreModel/Profile.swift b/IosClientKit/Sources/CoreModel/Profile.swift
new file mode 100644
index 0000000..f5cccea
--- /dev/null
+++ b/IosClientKit/Sources/CoreModel/Profile.swift
@@ -0,0 +1,53 @@
+import Foundation
+
+/// 用户所在的小组分组。
+public struct ClassGroup: Identifiable, Hashable, Sendable {
+    public let period: String
+    public let group: String
+    public let role: String
+
+    public var id: String { period }
+
+    public init(period: String, group: String, role: String) {
+        self.period = period
+        self.group = group
+        self.role = role
+    }
+}
+
+/// 个人资料。
+public struct UserProfile: Identifiable, Hashable, Sendable {
+    public let displayName: String
+    public let name: String
+    public let studentId: String
+    public let phone: String?
+    public let role: String
+    public let group: String?
+    public let loginType: String
+    public let avatarUrl: String?
+    public let classGroups: [ClassGroup]
+
+    public var id: String { studentId }
+
+    public init(
+        displayName: String,
+        name: String,
+        studentId: String,
+        phone: String?,
+        role: String,
+        group: String?,
+        loginType: String,
+        avatarUrl: String?,
+        classGroups: [ClassGroup]
+    ) {
+        self.displayName = displayName
+        self.name = name
+        self.studentId = studentId
+        self.phone = phone
+        self.role = role
+        self.group = group
+        self.loginType = loginType
+        self.avatarUrl = avatarUrl
+        self.classGroups = classGroups
+    }
+}