feat(posts): 类型帖截止时间、抽奖奖品表与悬赏发帖体验

统一投票/悬赏/抽奖截止与状态展示，抽奖支持多奖品行；发帖页悬赏积分对齐表格输入，并在余额不足时于底部就地提示。 Co-authored-by: Cursor <cursoragent@cursor.com>
2026-09-16 10:21:05 +08:00
parent 6b772380c9
commit b2d3d6dd26
23 changed files with 2711 additions and 1007 deletions
--- a/backend/cmd/jiang13/main.go
+++ b/backend/cmd/jiang13/main.go
@@ -25,7 +25,7 @@ func main() {
 	// 过期/已吊销 refresh token 定期清理
 	service.StartRefreshTokenCleanup(model.DB)
 	// 悬赏过期退回 / 抽奖到期开奖
-	service.StartTypedPostSettler(service.NewPostService(model.DB))
+	service.StartTypedPostSettler(service.NewPostService(model.DB).WithDevMode(cfg.DevMode))

 	r, err := router.Setup(cfg)
 	if err != nil {
--- a/backend/handler/comment.go
+++ b/backend/handler/comment.go
@@ -91,6 +91,8 @@ func (h *Handlers) CreateComment(c *gin.Context) {
 			if authorID, e := h.Post.GetAuthorID(uint(id)); e == nil {
 				h.Notification.Create(authorID, claims.ID, model.NotificationTypeComment, uint(id), comment.ID, req.Content)
 			}
+			// 抽奖帖：主评入池并记录客户端 IP（同 IP 去重）
+			h.Post.EnsureLotteryEntry(uint(id), claims.ID, comment.ID, c.ClientIP())
 		} else {
 			// 子回复：通知父评论作者（Notification.Create 内部排除自我通知）
 			h.Notification.Create(parent.UserID, claims.ID, model.NotificationTypeReply, uint(id), comment.ID, req.Content)
--- a/backend/handler/moderation.go
+++ b/backend/handler/moderation.go
@@ -78,6 +78,12 @@ func (h *Handlers) AdminApproveComment(c *gin.Context) {
 		h.writeModerationError(c, err)
 		return
 	}
+	// 抽奖帖主评通过审核后入池（无评论者 IP，回退其最近登录 IP）
+	var cm model.Comment
+	if e := model.DB.Select("id", "post_id", "user_id", "parent_id").First(&cm, uint(id)).Error; e == nil && cm.ParentID == nil {
+		ip := h.Post.LatestSuccessLoginIP(cm.UserID)
+		h.Post.EnsureLotteryEntry(cm.PostID, cm.UserID, cm.ID, ip)
+	}
 	h.broadcastFeedChanged("comment", postID, boardID, actor.ID)
 	h.broadcastModerationChanged()
 	c.JSON(http.StatusOK, gin.H{"message": "操作成功"})
--- a/backend/handler/post.go
+++ b/backend/handler/post.go
@@ -449,6 +449,9 @@ func respondPostModError(c *gin.Context, err error) {
 		c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
 	case errors.Is(err, service.ErrPostForbidden):
 		c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
+	case errors.Is(err, service.ErrPollOptionsLocked),
+		errors.Is(err, service.ErrLotteryPrizesLocked):
+		c.JSON(http.StatusConflict, gin.H{"error": err.Error()})
 	default:
 		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 	}
--- a/backend/handler/post_interact.go
+++ b/backend/handler/post_interact.go
@@ -22,9 +22,7 @@ func (h *Handlers) respondInteractError(c *gin.Context, err error) {
 		errors.Is(err, service.ErrPollClosed),
 		errors.Is(err, service.ErrPollOptionsLocked),
 		errors.Is(err, service.ErrLotteryDrawn),
-		errors.Is(err, service.ErrLotteryClosed),
-		errors.Is(err, service.ErrBountySettled),
-		errors.Is(err, service.ErrBountyExpired):
+		errors.Is(err, service.ErrBountySettled):
 		c.JSON(http.StatusConflict, gin.H{"error": err.Error()})
 	default:
 		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
@@ -148,38 +146,6 @@ func (h *Handlers) AcceptBounty(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"post": post})
 }

-// RefundBounty 退回悬赏
-func (h *Handlers) RefundBounty(c *gin.Context) {
-	claims := middleware.CurrentUser(c)
-	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
-	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": "无效的帖子 ID"})
-		return
-	}
-	post, err := h.Post.RefundBounty(h.loadActor(claims.ID), claims.ID, uint(id))
-	if err != nil {
-		h.respondInteractError(c, err)
-		return
-	}
-	c.JSON(http.StatusOK, gin.H{"post": post})
-}
-
-// CloseLottery 截止抽奖
-func (h *Handlers) CloseLottery(c *gin.Context) {
-	claims := middleware.CurrentUser(c)
-	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
-	if err != nil {
-		c.JSON(http.StatusBadRequest, gin.H{"error": "无效的帖子 ID"})
-		return
-	}
-	post, err := h.Post.CloseLotteryEntries(h.loadActor(claims.ID), claims.ID, uint(id))
-	if err != nil {
-		h.respondInteractError(c, err)
-		return
-	}
-	c.JSON(http.StatusOK, gin.H{"post": post})
-}
-
 // DrawLottery 开奖
 func (h *Handlers) DrawLottery(c *gin.Context) {
 	claims := middleware.CurrentUser(c)
--- a/backend/model/models.go
+++ b/backend/model/models.go
@@ -259,11 +259,13 @@ type PostPollVote struct {
 	CreatedAt   time.Time `json:"created_at"`
 }

-// PostLotteryEntry 抽奖报名
+// PostLotteryEntry 抽奖报名（主评入池时登记；同 IP 去重用 ClientIP）
 type PostLotteryEntry struct {
 	ID        uint      `gorm:"primaryKey" json:"id"`
 	PostID    uint      `gorm:"uniqueIndex:idx_lottery_entry;not null" json:"post_id"`
 	UserID    uint      `gorm:"uniqueIndex:idx_lottery_entry;not null" json:"user_id"`
+	CommentID uint      `gorm:"not null;default:0" json:"comment_id"` // 入池时的主评 ID
+	ClientIP  string    `gorm:"size:45;not null;default:''" json:"-"`
 	CreatedAt time.Time `json:"created_at"`
 }

--- a/backend/router/router.go
+++ b/backend/router/router.go
@@ -42,7 +42,7 @@ func Setup(cfg *config.Config) (*gin.Engine, error) {
 	authSvc := service.NewAuthService(model.DB, cfg.JWTSecret)
 	boardSvc := service.NewBoardService(model.DB)
 	settingSvc := service.NewSettingService(model.DB)
-	postSvc := service.NewPostService(model.DB).WithSetting(settingSvc)
+	postSvc := service.NewPostService(model.DB).WithSetting(settingSvc).WithDevMode(cfg.DevMode)
 	commentSvc := service.NewCommentService(model.DB)
 	likeSvc := service.NewLikeService(model.DB)
 	notifSvc := service.NewNotificationService(model.DB)
@@ -144,8 +144,6 @@ func Setup(cfg *config.Config) (*gin.Engine, error) {
 		api.POST("/posts/:id/question/solve", middleware.RateLimitUserMiddleware(limiter, service.RateInteract), h.SolveQuestion)
 		api.POST("/posts/:id/question/reopen", middleware.RateLimitUserMiddleware(limiter, service.RateInteract), h.ReopenQuestion)
 		api.POST("/posts/:id/bounty/accept", middleware.RateLimitUserMiddleware(limiter, service.RateInteract), h.AcceptBounty)
-		api.POST("/posts/:id/bounty/refund", h.RefundBounty)
-		api.POST("/posts/:id/lottery/close", h.CloseLottery)
 		api.POST("/posts/:id/lottery/draw", h.DrawLottery)
 		api.DELETE("/posts/:id", h.DeletePost)
 		api.PUT("/posts/:id/pin", h.TogglePin)
--- a/backend/service/post.go
+++ b/backend/service/post.go
@@ -22,6 +22,7 @@ var (
 type PostService struct {
 	db      *gorm.DB
 	setting *SettingService
+	devMode bool
 }

 func NewPostService(db *gorm.DB) *PostService {
@@ -34,6 +35,12 @@ func (s *PostService) WithSetting(setting *SettingService) *PostService {
 	return s
 }

+// WithDevMode 开发态：抽奖同 IP 去重对回环地址放宽
+func (s *PostService) WithDevMode(dev bool) *PostService {
+	s.devMode = dev
+	return s
+}
+
 // PostListQuery 帖子列表查询参数
 type PostListQuery struct {
 	BoardID     uint
@@ -445,6 +452,7 @@ func (s *PostService) GetByIDForViewer(id, viewerID uint, loadActor func() *Acto
 	// 惰性结算：悬赏过期退回 / 抽奖到期开奖
 	_ = s.settleExpiredBountyIfNeeded(&post)
 	_ = s.settleDueLotteryIfNeeded(&post)
+	_ = s.settleDuePollIfNeeded(&post)
 	if post.TypeMeta != "" {
 		var fresh model.Post
 		if err := s.db.Select("type_meta").First(&fresh, post.ID).Error; err == nil {
@@ -729,9 +737,8 @@ func (s *PostService) Create(in CreatePostInput) (*PostDetail, error) {
 		bm.Expired = false
 		bm.AcceptedCommentID = 0
 		if status == model.ContentStatusPublished {
-			days := normalizeExpireDays(bm.ExpireDays, 7, []int{3, 7, 14, 30})
+			bm.EndsAt = resolveEndsAtOnPublish(bm.EndsAt, bm.ExpireDays, 7, []int{3, 7, 14, 30}, now)
 			bm.ExpireDays = 0
-			bm.EndsAt = endsAtFromDays(days, now)
 		}
 		typeMeta, _ = encodeMeta(bm)
 	}
@@ -741,14 +748,26 @@ func (s *PostService) Create(in CreatePostInput) (*PostDetail, error) {
 		if lm.WinnerIDs == nil {
 			lm.WinnerIDs = []uint{}
 		}
+		if lm.Prizes == nil {
+			lm.Prizes = []LotteryPrize{}
+		}
+		lm.Slots = lotterySlotsFromPrizes(lm.Prizes)
 		if status == model.ContentStatusPublished {
-			days := normalizeExpireDays(lm.ExpireDays, 7, []int{1, 3, 7, 14})
+			lm.EndsAt = resolveEndsAtOnPublish(lm.EndsAt, lm.ExpireDays, 7, []int{1, 3, 7, 14}, now)
 			lm.ExpireDays = 0
-			lm.EndsAt = endsAtFromDays(days, now)
 		}
 		typeMeta, _ = encodeMeta(lm)
 	}

+	if postType == model.PostTypePoll {
+		pm, _ := parsePollMeta(typeMeta)
+		if status == model.ContentStatusPublished {
+			pm.EndsAt = resolveEndsAtOnPublish(pm.EndsAt, pm.ExpireDays, 7, []int{1, 3, 7, 14}, now)
+			pm.ExpireDays = 0
+		}
+		typeMeta, _ = encodeMeta(pm)
+	}
+
 	post := &model.Post{
 		BoardID: in.BoardID, UserID: in.UserID,
 		Title: title, Content: content, Tags: in.Tags,
@@ -892,9 +911,15 @@ func (s *PostService) Update(actor *Actor, postID, userID uint, in UpdatePostInp
 					neu.Multi = old.Multi
 					neu.Anonymous = old.Anonymous
 					neu.Closed = old.Closed
+					neu.EndsAt = old.EndsAt
+					neu.ClosedAt = old.ClosedAt
+					neu.ExpireDays = 0
 					meta, _ = encodeMeta(neu)
 				} else {
 					neu.Closed = old.Closed
+					neu.EndsAt = old.EndsAt
+					neu.ClosedAt = old.ClosedAt
+					neu.ExpireDays = 0
 					meta, _ = encodeMeta(neu)
 				}
 			}
@@ -907,8 +932,16 @@ func (s *PostService) Update(actor *Actor, postID, userID uint, in UpdatePostInp
 				neu.WinnerIDs = old.WinnerIDs
 				neu.Closed = old.Closed
 				neu.EndsAt = old.EndsAt
-				if old.Drawn {
+				// 已有评论或已开奖：冻结奖品（名额由奖品合计推导）
+				locked := old.Drawn || post.CommentCount > 0
+				if locked {
+					if !lotteryPrizesEqual(neu.Prizes, old.Prizes) || neu.Slots != old.Slots {
+						return nil, ErrLotteryPrizesLocked
+					}
+					neu.Prizes = old.Prizes
 					neu.Slots = old.Slots
+				} else {
+					neu.Slots = lotterySlotsFromPrizes(neu.Prizes)
 				}
 				meta, _ = encodeMeta(neu)
 			}
@@ -920,6 +953,7 @@ func (s *PostService) Update(actor *Actor, postID, userID uint, in UpdatePostInp
 				// 解题态走专用 API，编辑帖子不覆盖
 				neu.Solved = old.Solved
 				neu.AcceptedCommentID = old.AcceptedCommentID
+				neu.SolvedAt = old.SolvedAt
 				meta, _ = encodeMeta(neu)
 			}
 		}
--- a/backend/service/post_interact.go
+++ b/backend/service/post_interact.go
@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"math/big"
+	"net"
 	"strings"
 	"time"
 	"unicode/utf8"
@@ -16,15 +17,19 @@ import (
 // ---- TypeMeta 结构 ----

 type QuestionMeta struct {
-	Solved            bool `json:"solved"`
-	AcceptedCommentID uint `json:"accepted_comment_id"`
+	Solved            bool   `json:"solved"`
+	AcceptedCommentID uint   `json:"accepted_comment_id"`
+	SolvedAt          string `json:"solved_at,omitempty"` // 解决时刻 RFC3339
 }

 type PollMeta struct {
-	Options   []string `json:"options"`
-	Multi     bool     `json:"multi"`
-	Closed    bool     `json:"closed"`
-	Anonymous bool     `json:"anonymous"` // 默认 true；缺省字段在 parse 时补 true
+	Options    []string `json:"options"`
+	Multi      bool     `json:"multi"`
+	Closed     bool     `json:"closed"`
+	Anonymous  bool     `json:"anonymous"` // 默认 true；缺省字段在 parse 时补 true
+	EndsAt     string   `json:"ends_at,omitempty"`
+	ClosedAt   string   `json:"closed_at,omitempty"` // 实际结束时刻；提前结束时与 ends_at 可能不同
+	ExpireDays int      `json:"expire_days,omitempty"`
 }

 type BountyMeta struct {
@@ -37,13 +42,19 @@ type BountyMeta struct {
 	ExpireDays        int    `json:"expire_days,omitempty"` // 发帖入参，规范化后可清
 }

+type LotteryPrize struct {
+	Name  string `json:"name"`
+	Count int    `json:"count"`
+}
+
 type LotteryMeta struct {
-	Slots     int    `json:"slots"`
-	Drawn     bool   `json:"drawn"`
-	WinnerIDs []uint `json:"winner_ids"`
-	Closed    bool   `json:"closed"`
-	EndsAt    string `json:"ends_at"`
-	ExpireDays int   `json:"expire_days,omitempty"`
+	Prizes     []LotteryPrize `json:"prizes"`
+	Slots      int            `json:"slots"` // 由 prizes 数量合计推导，兼容旧数据
+	Drawn      bool           `json:"drawn"`
+	WinnerIDs  []uint         `json:"winner_ids"`
+	Closed     bool           `json:"closed"`
+	EndsAt     string         `json:"ends_at"`
+	ExpireDays int            `json:"expire_days,omitempty"`
 }

 var (
@@ -53,10 +64,9 @@ var (
 	ErrPollOptionsLocked  = errors.New("已有人投票，无法修改选项或匿名设置")
 	ErrBountySettled      = errors.New("悬赏已结算")
 	ErrBountyNotEscrow    = errors.New("悬赏未托管")
-	ErrBountyExpired      = errors.New("悬赏已过期")
 	ErrLotteryDrawn       = errors.New("已开奖")
-	ErrLotteryClosed      = errors.New("抽奖已截止")
 	ErrLotteryNoEntries   = errors.New("暂无回帖用户可抽奖")
+	ErrLotteryPrizesLocked = errors.New("已有评论，无法修改奖品设置")
 	ErrQuestionNotType    = errors.New("本文不是问答帖")
 )

@@ -73,10 +83,13 @@ func parseQuestionMeta(raw string) (*QuestionMeta, error) {

 func parsePollMeta(raw string) (*PollMeta, error) {
 	var wire struct {
-		Options   []string `json:"options"`
-		Multi     bool     `json:"multi"`
-		Closed    bool     `json:"closed"`
-		Anonymous *bool    `json:"anonymous"`
+		Options    []string `json:"options"`
+		Multi      bool     `json:"multi"`
+		Closed     bool     `json:"closed"`
+		Anonymous  *bool    `json:"anonymous"`
+		EndsAt     string   `json:"ends_at"`
+		ClosedAt   string   `json:"closed_at"`
+		ExpireDays int      `json:"expire_days"`
 	}
 	if err := json.Unmarshal([]byte(raw), &wire); err != nil {
 		return nil, errors.New("投票配置无效")
@@ -86,10 +99,13 @@ func parsePollMeta(raw string) (*PollMeta, error) {
 		anon = *wire.Anonymous
 	}
 	return &PollMeta{
-		Options:   wire.Options,
-		Multi:     wire.Multi,
-		Closed:    wire.Closed,
-		Anonymous: anon,
+		Options:    wire.Options,
+		Multi:      wire.Multi,
+		Closed:     wire.Closed,
+		Anonymous:  anon,
+		EndsAt:     strings.TrimSpace(wire.EndsAt),
+		ClosedAt:   strings.TrimSpace(wire.ClosedAt),
+		ExpireDays: wire.ExpireDays,
 	}, nil
 }

@@ -106,9 +122,49 @@ func parseLotteryMeta(raw string) (*LotteryMeta, error) {
 	if err := json.Unmarshal([]byte(raw), &m); err != nil {
 		return nil, errors.New("抽奖配置无效")
 	}
+	// 旧数据只有 slots：合成单一奖品项
+	if len(m.Prizes) == 0 && m.Slots > 0 {
+		m.Prizes = []LotteryPrize{{Name: "奖品", Count: m.Slots}}
+	}
+	if len(m.Prizes) > 0 {
+		m.Slots = lotterySlotsFromPrizes(m.Prizes)
+	}
 	return &m, nil
 }

+func lotterySlotsFromPrizes(prizes []LotteryPrize) int {
+	n := 0
+	for _, p := range prizes {
+		if p.Count > 0 {
+			n += p.Count
+		}
+	}
+	return n
+}
+
+func lotteryPrizesEqual(a, b []LotteryPrize) bool {
+	if len(a) != len(b) {
+		return false
+	}
+	for i := range a {
+		if a[i].Name != b[i].Name || a[i].Count != b[i].Count {
+			return false
+		}
+	}
+	return true
+}
+
+// expandLotteryPrizeNames 按奖项顺序展开为与名额等长的名称列表（开奖结果按序对应）
+func expandLotteryPrizeNames(prizes []LotteryPrize) []string {
+	out := make([]string, 0, lotterySlotsFromPrizes(prizes))
+	for _, p := range prizes {
+		for i := 0; i < p.Count; i++ {
+			out = append(out, p.Name)
+		}
+	}
+	return out
+}
+
 func encodeMeta(v any) (string, error) {
 	b, err := json.Marshal(v)
 	if err != nil {
@@ -145,6 +201,35 @@ func parseEndsAt(s string) (time.Time, bool) {
 	return t, true
 }

+// normalizeOptionalEndsAt 校验自定义截止时刻：至少晚于现在 1 小时，最远 90 天。空串表示未自定义。
+func normalizeOptionalEndsAt(endsAt string) (string, error) {
+	endsAt = strings.TrimSpace(endsAt)
+	if endsAt == "" {
+		return "", nil
+	}
+	t, ok := parseEndsAt(endsAt)
+	if !ok {
+		return "", errors.New("截止时间格式无效")
+	}
+	now := time.Now().UTC()
+	if !t.After(now.Add(time.Hour)) {
+		return "", errors.New("截止时间至少晚于当前 1 小时")
+	}
+	if t.After(now.Add(90 * 24 * time.Hour)) {
+		return "", errors.New("截止时间最远 90 天")
+	}
+	return t.UTC().Format(time.RFC3339), nil
+}
+
+// resolveEndsAtOnPublish 发布时确定 ends_at：已有自定义时刻则保留，否则按天数推算。
+func resolveEndsAtOnPublish(existing string, expireDays, def int, allowed []int, from time.Time) string {
+	if t, ok := parseEndsAt(existing); ok {
+		return t.UTC().Format(time.RFC3339)
+	}
+	days := normalizeExpireDays(expireDays, def, allowed)
+	return endsAtFromDays(days, from)
+}
+
 // ComputeTypeStatus 列表徽章状态
 func ComputeTypeStatus(postType, typeMeta string) string {
 	pt := model.NormalizePostType(postType)
@@ -175,7 +260,10 @@ func ComputeTypeStatus(postType, typeMeta string) string {
 		if m.AcceptedCommentID > 0 {
 			return "solved"
 		}
-		if m.Expired || m.Refunded {
+		if m.Expired {
+			return "expired"
+		}
+		if m.Refunded {
 			return "expired"
 		}
 		return "open"
@@ -240,6 +328,14 @@ func NormalizeAndValidateTypeMeta(postType, meta string) (string, error) {
 			return "", errors.New("最多 10 个投票选项")
 		}
 		m.Options = opts
+		if ends, err := normalizeOptionalEndsAt(m.EndsAt); err != nil {
+			return "", err
+		} else if ends != "" {
+			m.EndsAt = ends
+			m.ExpireDays = 0
+		} else {
+			m.ExpireDays = normalizeExpireDays(m.ExpireDays, 7, []int{1, 3, 7, 14})
+		}
 		return encodeMeta(m)
 	case model.PostTypeBounty:
 		if meta == "" {
@@ -255,50 +351,102 @@ func NormalizeAndValidateTypeMeta(postType, meta string) (string, error) {
 		if m.Points > 100000 {
 			return "", errors.New("悬赏积分过高")
 		}
-		days := normalizeExpireDays(m.ExpireDays, 7, []int{3, 7, 14, 30})
-		m.ExpireDays = days
-		// ends_at 在 Create/Approve 时按发布时间写入；编辑保留旧值
+		if ends, err := normalizeOptionalEndsAt(m.EndsAt); err != nil {
+			return "", err
+		} else if ends != "" {
+			m.EndsAt = ends
+			m.ExpireDays = 0
+		} else {
+			m.ExpireDays = normalizeExpireDays(m.ExpireDays, 7, []int{3, 7, 14, 30})
+		}
+		// ends_at 若仍空，在 Create/Approve 时按发布时间写入
 		return encodeMeta(m)
 	case model.PostTypeLottery:
 		if meta == "" {
-			return "", errors.New("请设置中奖名额")
+			return "", errors.New("请设置奖品")
 		}
 		m, err := parseLotteryMeta(meta)
 		if err != nil {
 			return "", err
 		}
-		if m.Slots < 1 {
-			return "", errors.New("中奖名额至少为 1")
+		prizes := make([]LotteryPrize, 0, len(m.Prizes))
+		for _, p := range m.Prizes {
+			name := strings.TrimSpace(p.Name)
+			if name == "" {
+				return "", errors.New("请填写奖品名称")
+			}
+			if utf8.RuneCountInString(name) > 32 {
+				return "", errors.New("奖品名称最多 32 字")
+			}
+			if p.Count < 1 {
+				return "", errors.New("请填写每个奖品的数量")
+			}
+			if p.Count > 100 {
+				return "", errors.New("单个奖品数量过多")
+			}
+			prizes = append(prizes, LotteryPrize{Name: name, Count: p.Count})
 		}
-		if m.Slots > 100 {
-			return "", errors.New("中奖名额过多")
+		if len(prizes) < 1 {
+			return "", errors.New("请至少添加一种奖品")
 		}
+		if len(prizes) > 10 {
+			return "", errors.New("最多 10 种奖品")
+		}
+		total := lotterySlotsFromPrizes(prizes)
+		if total < 1 {
+			return "", errors.New("奖品总名额至少为 1")
+		}
+		if total > 100 {
+			return "", errors.New("奖品总名额过多")
+		}
+		m.Prizes = prizes
+		m.Slots = total
 		if m.WinnerIDs == nil {
 			m.WinnerIDs = []uint{}
 		}
-		days := normalizeExpireDays(m.ExpireDays, 7, []int{1, 3, 7, 14})
-		m.ExpireDays = days
+		if ends, err := normalizeOptionalEndsAt(m.EndsAt); err != nil {
+			return "", err
+		} else if ends != "" {
+			m.EndsAt = ends
+			m.ExpireDays = 0
+		} else {
+			m.ExpireDays = normalizeExpireDays(m.ExpireDays, 7, []int{1, 3, 7, 14})
+		}
 		return encodeMeta(m)
 	default:
 		return "", nil
 	}
 }

-// EnsureDeadlineOnPublish 首次公开发布时补写 ends_at（悬赏/抽奖）
+// EnsureDeadlineOnPublish 首次公开发布时补写 ends_at（投票 / 悬赏 / 抽奖）
 func EnsureDeadlineOnPublish(typeMeta, postType string, publishedAt time.Time) (string, bool) {
 	pt := model.NormalizePostType(postType)
 	switch pt {
+	case model.PostTypePoll:
+		m, err := parsePollMeta(typeMeta)
+		if err != nil {
+			return typeMeta, false
+		}
+		if _, ok := parseEndsAt(m.EndsAt); ok {
+			return typeMeta, false
+		}
+		m.EndsAt = resolveEndsAtOnPublish("", m.ExpireDays, 7, []int{1, 3, 7, 14}, publishedAt)
+		m.ExpireDays = 0
+		raw, err := encodeMeta(m)
+		if err != nil {
+			return typeMeta, false
+		}
+		return raw, true
 	case model.PostTypeBounty:
 		m, err := parseBountyMeta(typeMeta)
 		if err != nil {
 			return typeMeta, false
 		}
-		if m.EndsAt != "" {
+		if _, ok := parseEndsAt(m.EndsAt); ok {
 			return typeMeta, false
 		}
-		days := normalizeExpireDays(m.ExpireDays, 7, []int{3, 7, 14, 30})
+		m.EndsAt = resolveEndsAtOnPublish("", m.ExpireDays, 7, []int{3, 7, 14, 30}, publishedAt)
 		m.ExpireDays = 0
-		m.EndsAt = endsAtFromDays(days, publishedAt)
 		raw, err := encodeMeta(m)
 		if err != nil {
 			return typeMeta, false
@@ -309,12 +457,11 @@ func EnsureDeadlineOnPublish(typeMeta, postType string, publishedAt time.Time) (
 		if err != nil {
 			return typeMeta, false
 		}
-		if m.EndsAt != "" {
+		if _, ok := parseEndsAt(m.EndsAt); ok {
 			return typeMeta, false
 		}
-		days := normalizeExpireDays(m.ExpireDays, 7, []int{1, 3, 7, 14})
+		m.EndsAt = resolveEndsAtOnPublish("", m.ExpireDays, 7, []int{1, 3, 7, 14}, publishedAt)
 		m.ExpireDays = 0
-		m.EndsAt = endsAtFromDays(days, publishedAt)
 		raw, err := encodeMeta(m)
 		if err != nil {
 			return typeMeta, false
@@ -347,6 +494,7 @@ type QuestionState struct {
 	AcceptedCommentID uint            `json:"accepted_comment_id"`
 	AcceptedFloor     int             `json:"accepted_floor"`
 	AcceptedAnswer    *AcceptedAnswer `json:"accepted_answer,omitempty"`
+	SolvedAt          string          `json:"solved_at,omitempty"`
 	CanAccept         bool            `json:"can_accept"`
 	CanSolve          bool            `json:"can_solve"`
 	CanReopen         bool            `json:"can_reopen"`
@@ -372,6 +520,8 @@ type PollState struct {
 	Multi          bool             `json:"multi"`
 	Closed         bool             `json:"closed"`
 	Anonymous      bool             `json:"anonymous"`
+	EndsAt         string           `json:"ends_at,omitempty"`
+	ClosedAt       string           `json:"closed_at,omitempty"`
 	TotalVotes     int              `json:"total_votes"`
 	Voters         int              `json:"voters"`
 	MyOptions      []int            `json:"my_options"`
@@ -391,7 +541,6 @@ type BountyState struct {
 	EndsAt            string          `json:"ends_at,omitempty"`
 	Settled           bool            `json:"settled"`
 	CanAccept         bool            `json:"can_accept"`
-	CanRefund         bool            `json:"can_refund"`
 }

 type LotteryEntrant struct {
@@ -399,20 +548,23 @@ type LotteryEntrant struct {
 	Nickname  string `json:"nickname"`
 	Username  string `json:"username"`
 	Avatar    string `json:"avatar"`
-	CommentID uint   `json:"comment_id"` // 中奖楼层（该用户最早主评），每人仅一条
+	CommentID uint   `json:"comment_id"`
 	Floor     int    `json:"floor"`
+	PrizeName string `json:"prize_name,omitempty"`
 }

 type LotteryState struct {
-	Slots      int              `json:"slots"`
-	Drawn      bool             `json:"drawn"`
-	Closed     bool             `json:"closed"`
-	EndsAt     string           `json:"ends_at,omitempty"`
-	EntryCount int              `json:"entry_count"` // 回帖参与人数
-	Eligible   bool             `json:"eligible"`    // 当前用户是否在奖池
-	CanDraw    bool             `json:"can_draw"`
-	CanClose   bool             `json:"can_close"`
-	Winners    []LotteryEntrant `json:"winners"`
+	Slots          int              `json:"slots"`
+	Prizes         []LotteryPrize   `json:"prizes"`
+	Drawn          bool             `json:"drawn"`
+	Closed         bool             `json:"closed"`
+	EndsAt         string           `json:"ends_at,omitempty"`
+	EntryCount     int              `json:"entry_count"`
+	Eligible       bool             `json:"eligible"`
+	CooldownHours  int              `json:"cooldown_hours"`
+	CanDraw        bool             `json:"can_draw"`
+	CanEditPrizes  bool             `json:"can_edit_prizes"`
+	Winners        []LotteryEntrant `json:"winners"`
 }

 func (s *PostService) fillInteractState(detail *PostDetail, post *model.Post, viewerID uint, loadActor func() *Actor) {
@@ -444,18 +596,28 @@ func (s *PostService) buildQuestionState(post *model.Post, canManage bool) *Ques
 		m = &QuestionMeta{}
 	}
 	floor := FloorNumber(s.db, post.ID, m.AcceptedCommentID)
+	answer := s.loadAcceptedAnswer(post.ID, m.AcceptedCommentID, floor)
+	solvedAt := m.SolvedAt
+	if m.Solved && solvedAt == "" && answer != nil && !answer.CreatedAt.IsZero() {
+		solvedAt = answer.CreatedAt.UTC().Format(time.RFC3339) // 旧数据：无 solved_at 时用采纳评论时间
+	}
 	return &QuestionState{
 		Solved:            m.Solved,
 		AcceptedCommentID: m.AcceptedCommentID,
 		AcceptedFloor:     floor,
-		AcceptedAnswer:    s.loadAcceptedAnswer(post.ID, m.AcceptedCommentID, floor),
+		AcceptedAnswer:    answer,
+		SolvedAt:          solvedAt,
 		CanAccept:         canManage && !m.Solved,
 		CanSolve:          canManage && !m.Solved,
-		CanReopen:         canManage && m.Solved,
+		// 已采纳答案后不可重新打开；仅「手动标已解决」可撤回
+		CanReopen:         canManage && m.Solved && m.AcceptedCommentID == 0,
 	}
 }

 func (s *PostService) buildPollState(post *model.Post, viewerID uint, canClose bool) *PollState {
+	_ = s.settleDuePollIfNeeded(post)
+	s.db.Select("id", "type_meta", "post_type").First(post, post.ID)
+
 	m, err := parsePollMeta(post.TypeMeta)
 	if err != nil || len(m.Options) == 0 {
 		return nil
@@ -531,11 +693,17 @@ func (s *PostService) buildPollState(post *model.Post, viewerID uint, canClose b
 		opts[i] = stat
 	}
 	voters := len(voterSet)
+	closedAt := m.ClosedAt
+	if m.Closed && closedAt == "" {
+		closedAt = m.EndsAt // 旧数据：无 closed_at 时用截止时刻兜底
+	}
 	return &PollState{
 		Options:        opts,
 		Multi:          m.Multi,
 		Closed:         m.Closed,
 		Anonymous:      m.Anonymous,
+		EndsAt:         m.EndsAt,
+		ClosedAt:       closedAt,
 		TotalVotes:     total,
 		Voters:         voters,
 		MyOptions:      my,
@@ -550,7 +718,7 @@ func (s *PostService) buildBountyState(post *model.Post, canManage bool) *Bounty
 	if err != nil {
 		return nil
 	}
-	settled := m.AcceptedCommentID > 0 || m.Refunded || m.Expired
+	accepted := m.AcceptedCommentID > 0
 	floor := FloorNumber(s.db, post.ID, m.AcceptedCommentID)
 	return &BountyState{
 		Points:            m.Points,
@@ -561,9 +729,9 @@ func (s *PostService) buildBountyState(post *model.Post, canManage bool) *Bounty
 		Refunded:          m.Refunded,
 		Expired:           m.Expired,
 		EndsAt:            m.EndsAt,
-		Settled:           settled,
-		CanAccept:         canManage && m.Escrowed && !settled && !m.Expired,
-		CanRefund:         canManage && m.Escrowed && !settled && !m.Expired,
+		Settled:           accepted,
+		// 托管中可采纳；到期自动退回后仍可从余额再扣支付（不可撤回）
+		CanAccept: canManage && !accepted && (m.Escrowed || m.Refunded),
 	}
 }

@@ -601,14 +769,197 @@ func (s *PostService) loadAcceptedAnswer(postID, commentID uint, floor int) *Acc
 	return ans
 }

+func (s *PostService) lotteryCooldownHours() int {
+	hours := DefaultCooldownHours
+	if s.setting != nil {
+		if h, err := s.setting.PostCooldownHours(); err == nil {
+			hours = h
+		}
+	}
+	if hours < 0 {
+		return 0
+	}
+	return hours
+}
+
+// EnsureLotteryEntry 主评公开发布后登记抽奖报名（幂等；楼主不入池）。
+func (s *PostService) EnsureLotteryEntry(postID, userID, commentID uint, clientIP string) {
+	if postID == 0 || userID == 0 {
+		return
+	}
+	var post model.Post
+	if err := s.db.Select("id", "user_id", "post_type").First(&post, postID).Error; err != nil {
+		return
+	}
+	if model.NormalizePostType(post.PostType) != model.PostTypeLottery {
+		return
+	}
+	if post.UserID == userID {
+		return
+	}
+	clientIP = normalizeLotteryIP(clientIP)
+	var n int64
+	s.db.Model(&model.PostLotteryEntry{}).
+		Where("post_id = ? AND user_id = ?", postID, userID).
+		Count(&n)
+	if n > 0 {
+		return
+	}
+	_ = s.db.Create(&model.PostLotteryEntry{
+		PostID:    postID,
+		UserID:    userID,
+		CommentID: commentID,
+		ClientIP:  clientIP,
+	}).Error
+}
+
+func normalizeLotteryIP(ip string) string {
+	ip = strings.TrimSpace(ip)
+	if ip == "" {
+		return ""
+	}
+	// 去掉 IPv6 zone（如 fe80::1%eth0）
+	if i := strings.IndexByte(ip, '%'); i >= 0 {
+		ip = ip[:i]
+	}
+	return ip
+}
+
+// lotteryEligibleIDs 奖池：已发布主评用户去重 − 楼主 − 新号冷静期 − 同 IP 仅留一人。
 func (s *PostService) lotteryEligibleIDs(postID, authorID uint) ([]uint, error) {
-	var ids []uint
-	err := s.db.Model(&model.Comment{}).
-		Where("post_id = ? AND status = ? AND deleted_at IS NULL AND user_id <> ?",
+	hours := s.lotteryCooldownHours()
+	q := s.db.Table("comments AS c").
+		Select("c.user_id").
+		Joins("INNER JOIN users u ON u.id = c.user_id AND u.deleted_at IS NULL").
+		Where("c.post_id = ? AND c.parent_id IS NULL AND c.status = ? AND c.deleted_at IS NULL AND c.user_id <> ?",
 			postID, model.ContentStatusPublished, authorID).
-		Distinct("user_id").
-		Pluck("user_id", &ids).Error
-	return ids, err
+		Group("c.user_id")
+	if hours > 0 {
+		cutoff := time.Now().UTC().Add(-time.Duration(hours) * time.Hour)
+		q = q.Where("u.created_at <= ?", cutoff)
+	}
+	var ids []uint
+	if err := q.Pluck("c.user_id", &ids).Error; err != nil {
+		return nil, err
+	}
+	return s.lotteryDedupByIP(postID, ids), nil
+}
+
+// latestSuccessLoginIPs 各用户最近一次成功登录 IP（作报名 IP 回退）
+func (s *PostService) latestSuccessLoginIPs(userIDs []uint) map[uint]string {
+	out := map[uint]string{}
+	if len(userIDs) == 0 {
+		return out
+	}
+	type row struct {
+		UserID uint
+		IP     string
+	}
+	var rows []row
+	_ = s.db.Raw(`
+		SELECT DISTINCT ON (user_id) user_id, ip
+		FROM login_logs
+		WHERE user_id IN ? AND success = TRUE AND ip <> ''
+		ORDER BY user_id, created_at DESC
+	`, userIDs).Scan(&rows).Error
+	for _, r := range rows {
+		out[r.UserID] = normalizeLotteryIP(r.IP)
+	}
+	return out
+}
+
+// LatestSuccessLoginIP 单用户最近成功登录 IP
+func (s *PostService) LatestSuccessLoginIP(userID uint) string {
+	if userID == 0 {
+		return ""
+	}
+	return s.latestSuccessLoginIPs([]uint{userID})[userID]
+}
+
+// lotteryIPIgnoredForDedup 不参与同 IP 互斥：空地址；开发态下的回环地址（::1 / 127.0.0.1）
+func (s *PostService) lotteryIPIgnoredForDedup(ip string) bool {
+	ip = normalizeLotteryIP(ip)
+	if ip == "" {
+		return true
+	}
+	if !s.devMode {
+		return false
+	}
+	parsed := net.ParseIP(ip)
+	return parsed != nil && parsed.IsLoopback()
+}
+
+// lotteryDedupByIP 同一非空 IP 只保留注册最早的一名；空 IP / 开发态回环不互斥。
+func (s *PostService) lotteryDedupByIP(postID uint, ids []uint) []uint {
+	if len(ids) <= 1 {
+		return ids
+	}
+	var entries []model.PostLotteryEntry
+	_ = s.db.Where("post_id = ? AND user_id IN ?", postID, ids).Find(&entries).Error
+	ipByUser := map[uint]string{}
+	for _, e := range entries {
+		if ip := normalizeLotteryIP(e.ClientIP); ip != "" && !s.lotteryIPIgnoredForDedup(ip) {
+			ipByUser[e.UserID] = ip
+		}
+	}
+	missing := make([]uint, 0)
+	for _, id := range ids {
+		if ipByUser[id] == "" {
+			missing = append(missing, id)
+		}
+	}
+	for id, ip := range s.latestSuccessLoginIPs(missing) {
+		if ip != "" && !s.lotteryIPIgnoredForDedup(ip) {
+			ipByUser[id] = ip
+		}
+	}
+
+	type userRow struct {
+		ID        uint
+		CreatedAt time.Time
+	}
+	var users []userRow
+	_ = s.db.Model(&model.User{}).Select("id", "created_at").
+		Where("id IN ?", ids).Find(&users).Error
+	created := map[uint]time.Time{}
+	for _, u := range users {
+		created[u.ID] = u.CreatedAt
+	}
+
+	// ip -> 胜出 user（注册最早；同刻取更小 id）
+	bestByIP := map[string]uint{}
+	for _, id := range ids {
+		ip := ipByUser[id]
+		if ip == "" {
+			continue
+		}
+		cur, ok := bestByIP[ip]
+		if !ok {
+			bestByIP[ip] = id
+			continue
+		}
+		ct, okC := created[id]
+		cc, okCur := created[cur]
+		if !okC {
+			continue
+		}
+		if !okCur || ct.Before(cc) || (ct.Equal(cc) && id < cur) {
+			bestByIP[ip] = id
+		}
+	}
+	chosenIP := map[uint]bool{}
+	for _, id := range bestByIP {
+		chosenIP[id] = true
+	}
+
+	out := make([]uint, 0, len(ids))
+	for _, id := range ids {
+		ip := ipByUser[id]
+		if ip == "" || chosenIP[id] {
+			out = append(out, id)
+		}
+	}
+	return out
 }

 // lotteryWinningFloor 中奖用户的中奖楼层：其在本帖最早一条已发布主评论（每人仅一楼）。
@@ -633,6 +984,7 @@ func (s *PostService) buildLotteryState(post *model.Post, viewerID uint, canMana
 	if err != nil {
 		return nil
 	}
+	cooldownHours := s.lotteryCooldownHours()
 	ids, _ := s.lotteryEligibleIDs(post.ID, post.UserID)
 	eligible := false
 	for _, id := range ids {
@@ -642,6 +994,7 @@ func (s *PostService) buildLotteryState(post *model.Post, viewerID uint, canMana
 		}
 	}
 	winners := []LotteryEntrant{}
+	prizeNames := expandLotteryPrizeNames(m.Prizes)
 	if len(m.WinnerIDs) > 0 {
 		var users []model.User
 		s.db.Select("id, username, nickname, avatar").Where("id IN ?", m.WinnerIDs).Find(&users)
@@ -649,9 +1002,13 @@ func (s *PostService) buildLotteryState(post *model.Post, viewerID uint, canMana
 		for _, u := range users {
 			umap[u.ID] = u
 		}
-		for _, id := range m.WinnerIDs {
+		for i, id := range m.WinnerIDs {
 			if u, ok := umap[id]; ok {
 				cid, floor := s.lotteryWinningFloor(post.ID, id)
+				prize := ""
+				if i < len(prizeNames) {
+					prize = prizeNames[i]
+				}
 				winners = append(winners, LotteryEntrant{
 					ID:        u.ID,
 					Nickname:  u.Nickname,
@@ -659,20 +1016,27 @@ func (s *PostService) buildLotteryState(post *model.Post, viewerID uint, canMana
 					Avatar:    u.Avatar,
 					CommentID: cid,
 					Floor:     floor,
+					PrizeName: prize,
 				})
 			}
 		}
 	}
+	prizes := m.Prizes
+	if prizes == nil {
+		prizes = []LotteryPrize{}
+	}
 	return &LotteryState{
-		Slots:      m.Slots,
-		Drawn:      m.Drawn,
-		Closed:     m.Closed,
-		EndsAt:     m.EndsAt,
-		EntryCount: len(ids),
-		Eligible:   eligible,
-		CanDraw:    canManage && !m.Drawn,
-		CanClose:   canManage && !m.Drawn && !m.Closed,
-		Winners:    winners,
+		Slots:         m.Slots,
+		Prizes:        prizes,
+		Drawn:         m.Drawn,
+		Closed:        m.Closed,
+		EndsAt:        m.EndsAt,
+		EntryCount:    len(ids),
+		Eligible:      eligible,
+		CooldownHours: cooldownHours,
+		CanDraw:       canManage && !m.Drawn,
+		CanEditPrizes: !m.Drawn && post.CommentCount == 0,
+		Winners:       winners,
 	}
 }

@@ -688,6 +1052,8 @@ func (s *PostService) VotePoll(userID, postID uint, optionIndexes []int) (*PostD
 	if post.Status != model.ContentStatusPublished {
 		return nil, errors.New("帖子未公开，无法投票")
 	}
+	_ = s.settleDuePollIfNeeded(&post)
+	s.db.First(&post, post.ID)
 	m, err := parsePollMeta(post.TypeMeta)
 	if err != nil {
 		return nil, err
@@ -755,6 +1121,9 @@ func (s *PostService) ClosePoll(actor *Actor, userID, postID uint) (*PostDetail,
 		return nil, err
 	}
 	m.Closed = true
+	if strings.TrimSpace(m.ClosedAt) == "" {
+		m.ClosedAt = time.Now().UTC().Format(time.RFC3339)
+	}
 	raw, err := encodeMeta(m)
 	if err != nil {
 		return nil, err
@@ -794,6 +1163,7 @@ func (s *PostService) AcceptQuestion(actor *Actor, userID, postID, commentID uin
 	}
 	m.AcceptedCommentID = commentID
 	m.Solved = true
+	m.SolvedAt = time.Now().UTC().Format(time.RFC3339)
 	raw, err := encodeMeta(m)
 	if err != nil {
 		return nil, err
@@ -819,6 +1189,7 @@ func (s *PostService) SolveQuestion(actor *Actor, userID, postID uint) (*PostDet
 		return nil, err
 	}
 	m.Solved = true
+	m.SolvedAt = time.Now().UTC().Format(time.RFC3339)
 	raw, err := encodeMeta(m)
 	if err != nil {
 		return nil, err
@@ -830,7 +1201,7 @@ func (s *PostService) SolveQuestion(actor *Actor, userID, postID uint) (*PostDet
 	return s.detailAfterInteract(post, userID)
 }

-// ReopenQuestion 重新打开
+// ReopenQuestion 重新打开（仅允许撤回「手动标已解决」；已采纳答案不可重开）
 func (s *PostService) ReopenQuestion(actor *Actor, userID, postID uint) (*PostDetail, error) {
 	post, err := s.loadManageablePost(actor, userID, postID)
 	if err != nil {
@@ -839,7 +1210,14 @@ func (s *PostService) ReopenQuestion(actor *Actor, userID, postID uint) (*PostDe
 	if model.NormalizePostType(post.PostType) != model.PostTypeQuestion {
 		return nil, ErrQuestionNotType
 	}
-	m := &QuestionMeta{Solved: false, AcceptedCommentID: 0}
+	old, err := parseQuestionMeta(post.TypeMeta)
+	if err != nil {
+		return nil, err
+	}
+	if old != nil && old.AcceptedCommentID > 0 {
+		return nil, errors.New("已采纳答案，无法重新打开")
+	}
+	m := &QuestionMeta{Solved: false, AcceptedCommentID: 0, SolvedAt: ""}
 	raw, err := encodeMeta(m)
 	if err != nil {
 		return nil, err
@@ -851,7 +1229,8 @@ func (s *PostService) ReopenQuestion(actor *Actor, userID, postID uint) (*PostDe
 	return s.detailAfterInteract(post, userID)
 }

-// AcceptBounty 采纳评论并发放悬赏
+// AcceptBounty 采纳评论并发放悬赏。
+// 托管中：从托管直接发给答主；到期已退回后：从作者余额再扣再发放（不可撤回）。
 func (s *PostService) AcceptBounty(actor *Actor, userID, postID, commentID uint) (*PostDetail, error) {
 	post, err := s.loadManageablePost(actor, userID, postID)
 	if err != nil {
@@ -867,15 +1246,17 @@ func (s *PostService) AcceptBounty(actor *Actor, userID, postID, commentID uint)
 	if err != nil {
 		return nil, err
 	}
-	if m.Expired {
-		return nil, ErrBountyExpired
-	}
-	if !m.Escrowed {
-		return nil, ErrBountyNotEscrow
-	}
-	if m.AcceptedCommentID > 0 || m.Refunded {
+	if m.AcceptedCommentID > 0 {
 		return nil, ErrBountySettled
 	}
+	payFromBalance := false
+	if m.Escrowed {
+		payFromBalance = false
+	} else if m.Refunded {
+		payFromBalance = true
+	} else {
+		return nil, ErrBountyNotEscrow
+	}
 	var cm model.Comment
 	if err := s.db.First(&cm, commentID).Error; err != nil || cm.PostID != postID {
 		return nil, errors.New("评论不存在")
@@ -888,56 +1269,18 @@ func (s *PostService) AcceptBounty(actor *Actor, userID, postID, commentID uint)
 	}

 	err = s.db.Transaction(func(tx *gorm.DB) error {
+		if payFromBalance {
+			note := "悬赏截止后采纳扣款：" + post.Title
+			if _, err := DebitTx(tx, post.UserID, m.Points, model.PointReasonBountyEscrow, "post", postID, note); err != nil {
+				return err
+			}
+		}
 		if _, err := CreditTx(tx, cm.UserID, m.Points, model.PointReasonBountyAward, "post", postID, "悬赏采纳："+post.Title); err != nil {
 			return err
 		}
 		m.AcceptedCommentID = commentID
 		m.Escrowed = false
-		raw, err := encodeMeta(m)
-		if err != nil {
-			return err
-		}
-		return tx.Model(post).Update("type_meta", raw).Error
-	})
-	if err != nil {
-		return nil, err
-	}
-	s.db.Preload("Board").Preload("User").First(post, post.ID)
-	return s.detailAfterInteract(post, userID)
-}
-
-// RefundBounty 退回悬赏积分（未采纳时）
-func (s *PostService) RefundBounty(actor *Actor, userID, postID uint) (*PostDetail, error) {
-	post, err := s.loadManageablePost(actor, userID, postID)
-	if err != nil {
-		return nil, err
-	}
-	_ = s.settleExpiredBountyIfNeeded(post)
-	s.db.First(post, post.ID)
-
-	if model.NormalizePostType(post.PostType) != model.PostTypeBounty {
-		return nil, errors.New("本文不是悬赏帖")
-	}
-	m, err := parseBountyMeta(post.TypeMeta)
-	if err != nil {
-		return nil, err
-	}
-	if m.Expired {
-		return nil, ErrBountyExpired
-	}
-	if !m.Escrowed {
-		return nil, ErrBountyNotEscrow
-	}
-	if m.AcceptedCommentID > 0 || m.Refunded {
-		return nil, ErrBountySettled
-	}
-
-	err = s.db.Transaction(func(tx *gorm.DB) error {
-		if _, err := CreditTx(tx, post.UserID, m.Points, model.PointReasonBountyRefund, "post", postID, "悬赏退回："+post.Title); err != nil {
-			return err
-		}
-		m.Refunded = true
-		m.Escrowed = false
+		// 截止后退回再采纳：保留 Expired/Refunded 痕迹便于对账，但 Settled 以采纳为准
 		raw, err := encodeMeta(m)
 		if err != nil {
 			return err
@@ -996,36 +1339,12 @@ func (s *PostService) settleExpiredBountyIfNeeded(post *model.Post) error {
 	})
 }

-// CloseLotteryEntries 截止抽奖（仍可手动开奖）
-func (s *PostService) CloseLotteryEntries(actor *Actor, userID, postID uint) (*PostDetail, error) {
-	post, err := s.loadManageablePost(actor, userID, postID)
-	if err != nil {
-		return nil, err
-	}
-	m, err := parseLotteryMeta(post.TypeMeta)
-	if err != nil {
-		return nil, err
-	}
-	if m.Drawn {
-		return nil, ErrLotteryDrawn
-	}
-	m.Closed = true
-	raw, err := encodeMeta(m)
-	if err != nil {
-		return nil, err
-	}
-	if err := s.db.Model(post).Update("type_meta", raw).Error; err != nil {
-		return nil, err
-	}
-	post.TypeMeta = raw
-	return s.detailAfterInteract(post, userID)
-}
-
 func (s *PostService) drawLotteryCore(post *model.Post, m *LotteryMeta) error {
 	ids, err := s.lotteryEligibleIDs(post.ID, post.UserID)
 	if err != nil {
 		return err
 	}
+	m.Slots = lotterySlotsFromPrizes(m.Prizes)
 	nWin := m.Slots
 	if nWin > len(ids) {
 		nWin = len(ids)
@@ -1078,6 +1397,34 @@ func (s *PostService) DrawLottery(actor *Actor, userID, postID uint) (*PostDetai
 	return s.detailAfterInteract(post, userID)
 }

+func (s *PostService) settleDuePollIfNeeded(post *model.Post) error {
+	if model.NormalizePostType(post.PostType) != model.PostTypePoll {
+		return nil
+	}
+	m, err := parsePollMeta(post.TypeMeta)
+	if err != nil || m.Closed {
+		return nil
+	}
+	ends, ok := parseEndsAt(m.EndsAt)
+	if !ok || time.Now().UTC().Before(ends) {
+		return nil
+	}
+	m.Closed = true
+	if strings.TrimSpace(m.ClosedAt) == "" {
+		// 到期自动结束：结束时刻取截止时刻
+		m.ClosedAt = ends.UTC().Format(time.RFC3339)
+	}
+	raw, err := encodeMeta(m)
+	if err != nil {
+		return err
+	}
+	if err := s.db.Model(post).Update("type_meta", raw).Error; err != nil {
+		return err
+	}
+	post.TypeMeta = raw
+	return nil
+}
+
 func (s *PostService) settleDueLotteryIfNeeded(post *model.Post) error {
 	if model.NormalizePostType(post.PostType) != model.PostTypeLottery {
 		return nil
@@ -1093,15 +1440,29 @@ func (s *PostService) settleDueLotteryIfNeeded(post *model.Post) error {
 	return s.drawLotteryCore(post, m)
 }

-// SettleDueTypedPosts 定时任务：悬赏过期退回 + 抽奖到期开奖
+// SettleDueTypedPosts 定时任务：投票到期关闭 + 悬赏过期退回 + 抽奖到期开奖
 func (s *PostService) SettleDueTypedPosts(limit int) {
 	if limit <= 0 {
 		limit = 50
 	}
+	n := 0
+	var polls []model.Post
+	s.db.Where("post_type = ? AND deleted_at IS NULL", model.PostTypePoll).
+		Order("id ASC").Limit(limit * 3).Find(&polls)
+	for i := range polls {
+		if n >= limit {
+			break
+		}
+		before := polls[i].TypeMeta
+		_ = s.settleDuePollIfNeeded(&polls[i])
+		if polls[i].TypeMeta != before {
+			n++
+		}
+	}
+
 	var bounties []model.Post
 	s.db.Where("post_type = ? AND deleted_at IS NULL", model.PostTypeBounty).
 		Order("id ASC").Limit(limit * 3).Find(&bounties)
-	n := 0
 	for i := range bounties {
 		if n >= limit {
 			break
@@ -1116,7 +1477,6 @@ func (s *PostService) SettleDueTypedPosts(limit int) {
 	var lotteries []model.Post
 	s.db.Where("post_type = ? AND deleted_at IS NULL", model.PostTypeLottery).
 		Order("id ASC").Limit(limit * 3).Find(&lotteries)
-	n = 0
 	for i := range lotteries {
 		if n >= limit {
 			break
--- a/frontend/AGENTS.md
+++ b/frontend/AGENTS.md
@@ -0,0 +1,9 @@
+<!-- BEGIN:nextjs-agent-rules -->
+
+# This is NOT the Next.js you know
+
+This version has breaking changes — APIs, conventions, and file structure may all differ from your training data. Read the relevant guide in `node_modules/next/dist/docs/` (resolved from this file's directory; in monorepos the `next` package may not be visible from the repo root) before writing any code. Heed deprecation notices.
+
+This block is written and re-added by `next dev` — verify at `node_modules/next/dist/server/lib/generate-agent-files.js`. Removing it from a diff only re-creates the uncommitted change; committing it with your work keeps the tree clean.
+
+<!-- END:nextjs-agent-rules -->
--- a/frontend/CLAUDE.md
+++ b/frontend/CLAUDE.md
@@ -0,0 +1 @@
+@AGENTS.md
--- a/frontend/app/globals.css
+++ b/frontend/app/globals.css
@@ -182,30 +182,106 @@ body {
  box-shadow: var(--shadow);
  overflow: visible;
 }
+.j13-compose-toolbar {
+  flex-shrink: 0;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 1rem;
+  padding: 0.75rem 1.25rem;
+  border-bottom: 1px solid var(--line);
+  background: color-mix(in srgb, var(--panel) 92%, var(--panel-2));
+  position: sticky;
+  top: 3.5rem;
+  z-index: 20;
+  border-radius: var(--r) var(--r) 0 0;
+}
+@media (min-width: 640px) {
+  .j13-compose-toolbar {
+    padding: 0.85rem 1.75rem;
+  }
+}
+.j13-compose-toolbar-title {
+  margin: 0;
+  font-size: 15px;
+  font-weight: 700;
+  color: var(--ink);
+  letter-spacing: -0.01em;
+}
+.j13-compose-toolbar-actions {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  flex-shrink: 0;
+}
 .j13-compose-body {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-height: 0;
-  padding: 1.35rem 1.35rem 0.85rem;
-  gap: 1.1rem;
+  padding: 1.15rem 1.15rem 0.75rem;
+  gap: 0.85rem;
 }
@media (min-width: 640px) {
  .j13-compose-body {
-    padding: 1.5rem 1.75rem 0.9rem;
-    gap: 1.15rem;
+    padding: 1.25rem 1.4rem 0.85rem;
+    gap: 0.95rem;
  }
 }
+/* 发帖分区卡片：轻分隔，不过度割裂也不糊成一片 */
+.j13-compose-section {
+  display: flex;
+  flex-direction: column;
+  gap: 0.85rem;
+  padding: 1rem 1.1rem 1.1rem;
+  border-radius: 14px;
+  border: 1px solid var(--line);
+  background: color-mix(in srgb, var(--bg) 70%, var(--panel));
+}
+.j13-compose-section-title {
+  margin: 0;
+  font-size: 12px;
+  font-weight: 700;
+  letter-spacing: 0.05em;
+  color: var(--ink-3);
+}
+.j13-compose-section-writing {
+  background: var(--panel);
+  border-color: color-mix(in srgb, var(--line) 85%, var(--accent) 15%);
+  box-shadow: 0 1px 0 color-mix(in srgb, var(--ink) 3.5%, transparent);
+  flex: 1 1 auto;
+  min-height: 0;
+}
+/* 类型面板已在分区内，去掉二次描边避免套娃 */
+.j13-compose-section .j13-compose-typepanel {
+  padding: 0;
+  border: 0;
+  border-radius: 0;
+  background: transparent;
+}
 .j13-compose-actions {
  flex-shrink: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
+  justify-content: space-between;
  gap: 0.75rem 1rem;
  padding: 1rem 1.5rem 1.25rem;
  border-top: 1px solid var(--line);
  background: var(--panel);
 }
+.j13-compose-actions-error {
+  flex: 1 1 12rem;
+  margin: 0;
+  max-width: min(100%, 28rem);
+}
+.j13-compose-actions-end {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 0.65rem;
+  margin-left: auto;
+}
@media (min-width: 640px) {
  .j13-compose-actions {
    padding-left: 2rem;
@@ -271,6 +347,54 @@ body {
  border: 1px dashed color-mix(in srgb, var(--accent) 28%, var(--line));
  background: color-mix(in srgb, var(--accent-soft) 55%, var(--panel));
 }
+.j13-lottery-prize-table-wrap {
+  overflow-x: auto;
+  border-radius: 10px;
+  border: 1px solid var(--line);
+  background: var(--panel);
+}
+.j13-lottery-prize-table {
+  width: 100%;
+  border-collapse: collapse;
+  font-size: 13.5px;
+}
+.j13-lottery-prize-table th,
+.j13-lottery-prize-table td {
+  padding: 8px 10px;
+  text-align: left;
+  vertical-align: middle;
+  border-bottom: 1px solid var(--line);
+}
+.j13-lottery-prize-table th {
+  font-weight: 600;
+  color: var(--ink-2);
+  background: var(--panel-2);
+  white-space: nowrap;
+}
+.j13-lottery-prize-table tbody tr:last-child td {
+  border-bottom: none;
+}
+.j13-lottery-prize-table .col-idx {
+  width: 2.5rem;
+  color: var(--ink-3);
+  font-variant-numeric: tabular-nums;
+}
+.j13-lottery-prize-table .col-count {
+  width: 6.5rem;
+}
+.j13-lottery-prize-table .col-actions {
+  width: 4.5rem;
+  text-align: right;
+}
+.j13-lottery-prize-table .j13-compose-field {
+  width: 100%;
+  padding: 7px 10px;
+  font-size: 13.5px;
+}
+.j13-lottery-prize-table .j13-compose-field-count {
+  width: 100%;
+  max-width: 5.5rem;
+}
 .j13-compose-attach-row {
  display: flex;
  align-items: center;
@@ -286,6 +410,474 @@ body {
  border: 1px solid var(--line);
  background: var(--panel);
 }
+
+/* 抽奖卡：对齐截图结构，落在站点石墨/令牌体系内 */
+/* 类型帖交互卡（投票 / 悬赏 / 抽奖）共用壳 */
+.j13-typed-card {
+  padding: 16px 18px 14px;
+}
+.j13-typed-head {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  justify-content: space-between;
+  gap: 10px 14px;
+}
+.j13-typed-head-main {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 10px;
+  min-width: 0;
+}
+.j13-typed-title {
+  display: inline-flex;
+  align-items: center;
+  gap: 7px;
+  margin: 0;
+  font-size: 15px;
+  font-weight: 700;
+  letter-spacing: -0.01em;
+  color: var(--ink);
+}
+.j13-typed-title svg {
+  flex-shrink: 0;
+}
+.j13-typed-title.is-question {
+  color: var(--ink);
+}
+.j13-typed-title.is-poll {
+  color: var(--accent);
+}
+.j13-typed-title.is-bounty {
+  color: var(--clay);
+}
+.j13-typed-title.is-lottery {
+  color: var(--gold);
+}
+.j13-typed-actions {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+}
+.j13-typed-actions-row {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+  margin-top: 12px;
+}
+.j13-typed-meta,
+.j13-typed-empty {
+  margin: 8px 0 0;
+  font-size: 12.5px;
+  line-height: 1.5;
+  color: var(--ink-3);
+}
+.j13-typed-foot {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  justify-content: space-between;
+  gap: 8px 16px;
+  margin-top: 14px;
+  padding-top: 12px;
+  border-top: 1px solid var(--line);
+  font-size: 12.5px;
+  color: var(--ink-3);
+}
+.j13-typed-foot-status {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  font-weight: 550;
+}
+.j13-typed-foot-status svg {
+  flex-shrink: 0;
+  color: var(--ink-2);
+}
+.j13-typed-foot-time {
+  font-variant-numeric: tabular-nums;
+}
+.j13-bounty-points {
+  font-weight: 700;
+  color: var(--clay);
+}
+.j13-poll-options {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  margin: 12px 0 0;
+  padding: 0;
+  list-style: none;
+}
+.j13-poll-option {
+  position: relative;
+  display: block;
+  width: 100%;
+  text-align: left;
+  overflow: hidden;
+  padding: 10px 12px;
+  border-radius: 12px;
+  border: 1px solid var(--line);
+  background: var(--panel);
+  transition: border-color 0.15s ease, background 0.15s ease;
+}
+.j13-poll-option:disabled {
+  cursor: default;
+}
+.j13-poll-option:not(:disabled):hover {
+  border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
+}
+.j13-poll-option.is-on {
+  border-color: var(--accent);
+  background: var(--accent-soft);
+}
+.j13-poll-option-bar {
+  position: absolute;
+  inset: 0 auto 0 0;
+  opacity: 0.28;
+  background: var(--accent);
+  pointer-events: none;
+}
+.j13-poll-option-row {
+  position: relative;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+}
+.j13-poll-option-text {
+  font-size: 14px;
+  color: var(--ink);
+}
+.j13-poll-option-stat {
+  flex-shrink: 0;
+  font-size: 12.5px;
+  color: var(--ink-3);
+}
+.j13-poll-voters {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  margin: 6px 0 0;
+  padding: 0 2px;
+  list-style: none;
+}
+.j13-poll-voter {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  padding: 2px 8px 2px 3px;
+  border-radius: 999px;
+  font-size: 12px;
+  background: var(--accent-soft);
+  color: var(--accent);
+  text-decoration: none;
+}
+.j13-poll-voter:hover {
+  text-decoration: underline;
+}
+
+.j13-lottery-card {
+  padding: 16px 18px 14px;
+}
+.j13-lottery-head {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  justify-content: space-between;
+  gap: 10px 14px;
+}
+.j13-lottery-head-main {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 10px;
+  min-width: 0;
+}
+.j13-lottery-title {
+  display: inline-flex;
+  align-items: center;
+  gap: 7px;
+  margin: 0;
+  font-size: 15px;
+  font-weight: 700;
+  letter-spacing: -0.01em;
+  color: var(--gold);
+}
+.j13-lottery-title svg {
+  flex-shrink: 0;
+}
+.j13-lottery-actions {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+}
+.j13-lottery-meta,
+.j13-lottery-empty {
+  margin: 8px 0 0;
+  font-size: 12.5px;
+  line-height: 1.5;
+  color: var(--ink-3);
+}
+/* 截止倒计时：投票 / 悬赏 / 抽奖共用 */
+.j13-deadline-countdown {
+  margin-top: 12px;
+  padding: 12px 14px 11px;
+  border-radius: 14px;
+  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--line));
+  background: color-mix(in srgb, var(--accent-soft) 55%, var(--panel));
+}
+.j13-deadline-countdown.is-expired {
+  border-color: color-mix(in srgb, var(--ink-3) 35%, var(--line));
+  background: color-mix(in srgb, var(--tint) 70%, var(--panel));
+}
+.j13-deadline-countdown-label {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  margin: 0 0 8px;
+  font-size: 12.5px;
+  font-weight: 650;
+  color: var(--accent);
+}
+.j13-deadline-countdown.is-expired .j13-deadline-countdown-label {
+  color: var(--ink-2);
+}
+.j13-deadline-countdown-digits {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: flex-end;
+  gap: 8px;
+}
+.j13-deadline-countdown-unit {
+  display: inline-flex;
+  align-items: baseline;
+  gap: 4px;
+  padding: 6px 10px 5px;
+  border-radius: 10px;
+  background: var(--panel);
+  border: 1px solid var(--line);
+  box-shadow: var(--shadow-sm);
+}
+.j13-deadline-countdown-unit.is-sec {
+  border-color: color-mix(in srgb, var(--accent) 28%, var(--line));
+  background: color-mix(in srgb, var(--accent-soft) 45%, var(--panel));
+}
+.j13-deadline-countdown-num {
+  font-family: var(--font-mono);
+  font-size: clamp(1.35rem, 3.2vw, 1.75rem);
+  font-weight: 750;
+  line-height: 1;
+  letter-spacing: -0.02em;
+  color: var(--ink);
+}
+.j13-deadline-countdown-suf {
+  font-size: 12px;
+  font-weight: 650;
+  color: var(--ink-3);
+}
+.j13-deadline-countdown-unit.is-sec .j13-deadline-countdown-num {
+  color: var(--accent);
+}
+.j13-deadline-countdown-expired {
+  margin: 0;
+  font-size: 1.15rem;
+  font-weight: 750;
+  letter-spacing: -0.01em;
+  color: var(--ink);
+}
+.j13-deadline-countdown-ends {
+  margin: 8px 0 0;
+  font-size: 12px;
+  color: var(--ink-3);
+  font-variant-numeric: tabular-nums;
+}
+.dark .j13-deadline-countdown-unit {
+  background: var(--panel-2);
+  box-shadow: none;
+}
+.j13-deadline-picker {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+.j13-deadline-picker-label {
+  font-size: 13px;
+  font-weight: 650;
+  color: var(--ink);
+}
+.j13-deadline-picker-modes {
+  display: inline-flex;
+  gap: 4px;
+  padding: 3px;
+  border-radius: 10px;
+  background: var(--tint);
+  align-self: flex-start;
+}
+.j13-deadline-mode {
+  border: 0;
+  background: transparent;
+  color: var(--ink-2);
+  font-size: 12.5px;
+  font-weight: 600;
+  padding: 5px 10px;
+  border-radius: 8px;
+  cursor: pointer;
+}
+.j13-deadline-mode.is-on {
+  background: var(--panel);
+  color: var(--ink);
+  box-shadow: var(--shadow-sm);
+}
+.j13-deadline-mode:disabled {
+  opacity: 0.55;
+  cursor: not-allowed;
+}
+.j13-deadline-presets {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+}
+.j13-deadline-custom {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  max-width: 22rem;
+}
+.j13-deadline-datetime {
+  width: 100%;
+}
+/* 奖品 / 中奖者：横向排布，放不下换行 */
+.j13-lottery-prize-row,
+.j13-lottery-winner-row {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: stretch;
+  gap: 8px 10px;
+  margin: 12px 0 0;
+  padding: 0;
+  list-style: none;
+}
+.j13-lottery-prize-row > li,
+.j13-lottery-winner-row > li {
+  min-width: 0;
+}
+/* 奖品胶囊：淡金底 + 深金字 + 奖杯徽标 */
+.j13-lottery-prize-chip {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  max-width: min(100%, 28rem);
+  padding: 6px 13px 6px 11px;
+  border-radius: 999px;
+  font-size: 13px;
+  font-weight: 650;
+  line-height: 1.25;
+  background: var(--gold-soft);
+  color: var(--gold);
+  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--gold) 28%, transparent);
+}
+.j13-lottery-prize-chip svg {
+  flex-shrink: 0;
+}
+.j13-lottery-prize-chip-text {
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+.j13-lottery-prize-chip-count {
+  margin-left: 0.3em;
+  font-variant-numeric: tabular-nums;
+  font-weight: 700;
+}
+.j13-lottery-winners-label {
+  margin: 14px 0 0;
+  font-size: 12px;
+  font-weight: 600;
+  color: var(--ink-3);
+}
+.j13-lottery-winner-row {
+  margin-top: 8px;
+}
+/* 中奖者：横向胶囊卡片，内容定宽、可换行 */
+.j13-lottery-winner {
+  display: grid;
+  grid-template-columns: auto minmax(0, 1fr);
+  align-items: center;
+  column-gap: 10px;
+  width: min(100%, 15.5rem);
+  min-height: 52px;
+  padding: 8px 14px 8px 8px;
+  border-radius: 14px;
+  border: 1px solid var(--line);
+  background: var(--panel);
+  box-shadow: var(--shadow-sm);
+}
+.j13-lottery-winner-avatar {
+  grid-column: 1;
+}
+.j13-lottery-winner-body {
+  grid-column: 2;
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  min-width: 0;
+}
+.j13-lottery-winner-name {
+  display: block;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  font-size: 13px;
+  font-weight: 650;
+  line-height: 1.25;
+  color: var(--ink);
+  text-decoration: none;
+}
+.j13-lottery-winner-name:hover {
+  color: var(--accent);
+}
+.j13-lottery-winner-prize {
+  display: block;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  font-size: 11.5px;
+  font-weight: 600;
+  color: var(--gold);
+}
+.dark .j13-lottery-winner {
+  background: var(--panel-2);
+  box-shadow: none;
+}
+.j13-lottery-foot {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  justify-content: space-between;
+  gap: 8px 16px;
+  margin-top: 14px;
+  padding-top: 12px;
+  border-top: 1px solid var(--line);
+  font-size: 12.5px;
+  color: var(--ink-3);
+}
+.j13-lottery-foot-status {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  font-weight: 550;
+}
+.j13-lottery-foot-status svg {
+  flex-shrink: 0;
+  color: var(--ink-2);
+}
+.j13-lottery-foot-time {
+  font-variant-numeric: tabular-nums;
+}
 .j13-interact-card.is-unsolved {
  background: color-mix(in srgb, var(--danger) 7%, var(--panel));
  border-color: color-mix(in srgb, var(--danger) 22%, var(--line));
@@ -303,51 +895,41 @@ body {
  border-color: color-mix(in srgb, var(--ok) 30%, var(--line));
 }

-/* 正文下方已采纳答案：问答资料卡 */
+/* 正文下方已采纳答案：与类型帖 typed-card 同框，配色克制 */
 .j13-accepted-answer {
  margin-top: 1.75rem;
-  padding: 1.15rem 1.25rem 1.25rem;
-  border-radius: 14px;
-  border: 1px solid color-mix(in srgb, var(--ok) 28%, var(--line));
-  background: color-mix(in srgb, var(--ok) 7%, var(--panel));
-  box-shadow: inset 3px 0 0 0 var(--ok);
 }
-.dark .j13-accepted-answer {
-  background: color-mix(in srgb, var(--ok) 12%, var(--panel));
-  border-color: color-mix(in srgb, var(--ok) 36%, var(--line));
-}
-.j13-accepted-answer__head {
-  display: flex;
-  flex-wrap: wrap;
-  align-items: flex-start;
-  justify-content: space-between;
-  gap: 12px 16px;
-  margin-bottom: 0.9rem;
-  padding-bottom: 0.85rem;
-  border-bottom: 1px solid color-mix(in srgb, var(--ok) 18%, var(--line));
-}
-.j13-accepted-answer__meta {
-  display: flex;
-  flex-direction: column;
-  gap: 10px;
-  min-width: 0;
-  flex: 1;
-}
-.j13-accepted-answer__status {
-  margin: 0;
-  font-size: 15px;
-  font-weight: 600;
-  color: var(--ink);
-  line-height: 1.3;
+.j13-accepted-answer.is-question,
+.j13-accepted-answer.is-bounty {
+  /* 覆盖旧绿底/左边条；沿用 interact-card 面板 */
+  border-color: var(--line);
+  background: var(--panel);
+  box-shadow: none;
 }
 .j13-accepted-answer__author {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
+  margin-top: 12px;
+}
+.j13-accepted-answer__chip {
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  flex-shrink: 0;
+  padding: 3px 9px;
+  border-radius: 999px;
+  font-size: 12px;
+  font-weight: 600;
+  background: var(--ok-soft);
+  color: var(--ok);
 }
 .j13-accepted-answer__body {
  min-width: 0;
+  margin-top: 12px;
+  padding-top: 12px;
+  border-top: 1px solid var(--line);
 }
 /* 正文下方类型特殊块（投票/悬赏/抽奖/问答状态） */
 .j13-interact-below {
@@ -382,6 +964,10 @@ body {
  opacity: 0.65;
  cursor: not-allowed;
 }
+.j13-compose-field-invalid {
+  border-color: color-mix(in srgb, var(--danger) 55%, var(--line));
+  box-shadow: 0 0 0 3px color-mix(in srgb, var(--danger) 14%, transparent);
+}

 .j13-compose-title {
  width: 100%;
@@ -1129,18 +1715,11 @@ a.j13-mention-token:hover {
    background: color-mix(in srgb, #0284c7 12%, var(--panel));
    color: #0369a1;
  }
+  /* 已结束 / 已过期 / 已开奖 / 已截止：统一灰胶囊（标识已到期） */
  .badge-status-closed {
    background: color-mix(in srgb, #5b6b8c 12%, var(--panel));
    color: #5b6b8c;
  }
-  .badge-status-expired {
-    background: color-mix(in srgb, var(--danger) 12%, var(--panel));
-    color: var(--danger);
-  }
-  .badge-status-drawn {
-    background: color-mix(in srgb, #7c5cbf 14%, var(--panel));
-    color: #6a4aad;
-  }
  .dark .badge-status-unsolved {
    background: rgba(255, 107, 96, 0.14);
    color: #fca5a5;
@@ -1157,14 +1736,6 @@ a.j13-mention-token:hover {
    background: rgba(170, 182, 207, 0.14);
    color: #aab6cf;
  }
-  .dark .badge-status-expired {
-    background: color-mix(in srgb, var(--danger) 20%, transparent);
-    color: var(--danger);
-  }
-  .dark .badge-status-drawn {
-    background: rgba(192, 168, 245, 0.16);
-    color: #c0a8f5;
-  }

  /* 评论区成就徽标：实心底，比类型/状态浅底更醒目 */
  .badge-accepted {
--- a/frontend/app/post/[id]/edit/EditPostClient.tsx
+++ b/frontend/app/post/[id]/edit/EditPostClient.tsx
@@ -14,6 +14,7 @@ type Props = {
  initialTypeMeta?: string;
  initialAttachments?: PostAttachment[];
  canEditPollOptions?: boolean;
+  canEditLotteryPrizes?: boolean;
  boardName: string;
  boardId: number;
  boardColorIndex?: number;
@@ -30,6 +31,7 @@ export default function EditPostClient({
  initialTypeMeta,
  initialAttachments,
  canEditPollOptions,
+  canEditLotteryPrizes,
  boardName,
  boardId,
  boardColorIndex = 0,
@@ -47,6 +49,7 @@ export default function EditPostClient({
      initialTypeMeta={initialTypeMeta}
      initialAttachments={initialAttachments}
      canEditPollOptions={canEditPollOptions}
+      canEditLotteryPrizes={canEditLotteryPrizes}
      boardName={boardName}
      boardId={boardId}
      boardColorIndex={boardColorIndex}
--- a/frontend/app/post/[id]/edit/page.tsx
+++ b/frontend/app/post/[id]/edit/page.tsx
@@ -65,6 +65,7 @@ export default async function EditPostPage({ params }: PageProps) {
        initialTypeMeta={post.type_meta}
        initialAttachments={post.attachments || []}
        canEditPollOptions={post.poll?.can_edit_options !== false}
+        canEditLotteryPrizes={post.lottery?.can_edit_prizes !== false}
        boardName={post.board?.name || "未知板块"}
        boardId={post.board_id}
        boardColorIndex={post.board?.color_index ?? 0}
--- a/frontend/app/post/[id]/page.tsx
+++ b/frontend/app/post/[id]/page.tsx
@@ -714,8 +714,11 @@ export default async function PostDetailPage({ params, searchParams }: PageProps
                <AcceptedAnswerCard
                  answer={acceptedAnswer}
                  variant={acceptedAnswerVariant}
-                  postId={post.id}
-                  canReopen={!!post.question?.can_reopen}
+                  solvedAt={
+                    post.question?.solved_at ||
+                    post.bounty?.accepted_answer?.created_at ||
+                    acceptedAnswer.created_at
+                  }
                />
              ) : questionState ? (
                <QuestionStatusCard postId={post.id} state={questionState} />
--- a/frontend/components/AcceptedAnswerCard.tsx
+++ b/frontend/components/AcceptedAnswerCard.tsx
@@ -1,76 +1,83 @@
 import Link from "next/link";
-import { CheckCircle2 } from "lucide-react";
+import { CheckCircle2, CircleHelp, Coins } from "lucide-react";
 import type { AcceptedAnswer } from "@/lib/api";
 import Avatar from "@/components/Avatar";
 import MarkdownBody from "@/components/MarkdownBody";
-import AcceptedAnswerReopen from "@/components/AcceptedAnswerReopen";

-/** 正文下方的已采纳答案卡：头像 + 昵称 + 全文；问答已解决时并入状态与「重新打开」 */
+/** 正文下方已采纳答案：对齐类型帖 typed-card；已采纳后不可重新打开 */
 export default async function AcceptedAnswerCard({
  answer,
  variant = "question",
-  postId,
-  canReopen = false,
+  solvedAt,
 }: {
  answer: AcceptedAnswer;
  /** 问答用「最佳答案」，悬赏用「已采纳」 */
  variant?: "question" | "bounty";
-  postId?: number;
-  canReopen?: boolean;
+  /** 解决/采纳时刻；缺省用答案创建时间 */
+  solvedAt?: string;
 }) {
  const name = answer.user.nickname || answer.user.username || "用户";
-  const label = variant === "bounty" ? "已采纳" : "最佳答案";
-  const showReopen = variant === "question" && canReopen && !!postId;
+  const isQuestion = variant === "question";
+  const title = isQuestion ? "问答" : "悬赏";
+  const statusLabel = isQuestion ? "已解决" : "已采纳";
+  const answerLabel = isQuestion ? "最佳答案" : "采纳答案";
+  const endTime = solvedAt || answer.created_at;
+  const endLabel = formatEndsAt(endTime);

  return (
-    <section className="j13-accepted-answer" aria-label={variant === "question" ? "问答 · 已解决" : label}>
-      <header className="j13-accepted-answer__head">
-        <div className="j13-accepted-answer__meta min-w-0">
-          {variant === "question" && (
-            <p className="j13-accepted-answer__status">问答 · 已解决</p>
-          )}
-          <div className="j13-accepted-answer__author min-w-0">
-            <span className="badge-accepted shrink-0">
-              <CheckCircle2 size={13} aria-hidden />
-              {label}
-            </span>
-            <Link
-              href={`/u/${answer.user.id}`}
-              className="shrink-0"
-              aria-label={name}
-            >
-              <Avatar name={name} src={answer.user.avatar || undefined} size={36} />
-            </Link>
-            <div className="min-w-0 flex flex-col gap-0.5">
-              <Link
-                href={`/u/${answer.user.id}`}
-                className="truncate text-[14px] font-semibold hover:text-[var(--accent)] transition-colors"
-                style={{ color: "var(--ink)" }}
-              >
-                {name}
-              </Link>
-              <p className="meta text-[12px] flex items-center gap-1.5 flex-wrap">
-                <time dateTime={answer.created_at}>
-                  {new Date(answer.created_at).toLocaleString("zh-CN")}
-                </time>
-                {answer.floor > 0 && (
-                  <>
-                    <span aria-hidden>·</span>
-                    <a
-                      href={`#comment-${answer.id}`}
-                      className="hover:underline"
-                      style={{ color: "var(--accent)" }}
-                    >
-                      #{answer.floor}
-                    </a>
-                  </>
-                )}
-              </p>
-            </div>
-          </div>
+    <section
+      className={`j13-interact-card j13-typed-card j13-accepted-answer${isQuestion ? " is-question" : " is-bounty"}`}
+      aria-label={`${title} · ${statusLabel}`}
+    >
+      <div className="j13-typed-head">
+        <div className="j13-typed-head-main">
+          <h2 className={`j13-typed-title ${isQuestion ? "is-question" : "is-bounty"}`}>
+            {isQuestion ? (
+              <CircleHelp size={16} strokeWidth={2.25} aria-hidden />
+            ) : (
+              <Coins size={16} strokeWidth={2.25} aria-hidden />
+            )}
+            {title}
+          </h2>
+          <span className="badge-status badge-status-solved shrink-0">{statusLabel}</span>
        </div>
-        {showReopen && <AcceptedAnswerReopen postId={postId!} />}
-      </header>
+      </div>
+
+      <div className="j13-accepted-answer__author">
+        <span className="j13-accepted-answer__chip">
+          <CheckCircle2 size={12} strokeWidth={2.25} aria-hidden />
+          {answerLabel}
+        </span>
+        <Link href={`/u/${answer.user.id}`} className="shrink-0" aria-label={name}>
+          <Avatar name={name} src={answer.user.avatar || undefined} size={32} />
+        </Link>
+        <div className="min-w-0 flex flex-col gap-0.5">
+          <Link
+            href={`/u/${answer.user.id}`}
+            className="truncate text-[13.5px] font-semibold hover:text-[var(--accent)] transition-colors"
+            style={{ color: "var(--ink)" }}
+          >
+            {name}
+          </Link>
+          <p className="meta text-[12px] flex items-center gap-1.5 flex-wrap !mb-0">
+            <time dateTime={answer.created_at}>
+              {new Date(answer.created_at).toLocaleString("zh-CN")}
+            </time>
+            {answer.floor > 0 && (
+              <>
+                <span aria-hidden>·</span>
+                <a
+                  href={`#comment-${answer.id}`}
+                  className="hover:underline"
+                  style={{ color: "var(--accent)" }}
+                >
+                  #{answer.floor}
+                </a>
+              </>
+            )}
+          </p>
+        </div>
+      </div>

      <div className="j13-accepted-answer__body">
        {answer.deleted ? (
@@ -81,6 +88,25 @@ export default async function AcceptedAnswerCard({
          <MarkdownBody content={answer.content} className="prose-content prose-comment" />
        )}
      </div>
+
+      <div className="j13-typed-foot">
+        <span className="j13-typed-foot-status">
+          <CheckCircle2 size={14} strokeWidth={2.25} aria-hidden />
+          {isQuestion ? "已采纳答案" : "悬赏已发放"}
+        </span>
+        {endLabel ? (
+          <span className="j13-typed-foot-time">结束时间: {endLabel}</span>
+        ) : null}
+      </div>
    </section>
  );
 }
+
+function formatEndsAt(iso?: string) {
+  if (!iso) return "";
+  try {
+    return new Date(iso).toLocaleString("zh-CN");
+  } catch {
+    return iso;
+  }
+}
--- a/frontend/components/AcceptedAnswerReopen.tsx
+++ b/frontend/components/AcceptedAnswerReopen.tsx
@@ -1,36 +0,0 @@
-"use client";
-
-import { useState } from "react";
-import { useRouter } from "next/navigation";
-import { apiReopenQuestion } from "@/lib/api";
-import { toast } from "@/lib/toast";
-
-/** 已采纳答案卡上的「重新打开」——并入正文下方资料卡，避免与上方状态条重复 */
-export default function AcceptedAnswerReopen({ postId }: { postId: number }) {
-  const router = useRouter();
-  const [busy, setBusy] = useState(false);
-
-  const reopen = async () => {
-    setBusy(true);
-    try {
-      const res = await apiReopenQuestion(String(postId));
-      if (res.post) {
-        toast("已重新打开", "ok");
-        router.refresh();
-      } else toast(res.error || "操作失败", "error");
-    } finally {
-      setBusy(false);
-    }
-  };
-
-  return (
-    <button
-      type="button"
-      className="btn btn-line btn-sm shrink-0 ml-auto"
-      disabled={busy}
-      onClick={() => void reopen()}
-    >
-      {busy ? "处理中…" : "重新打开"}
-    </button>
-  );
-}
--- a/frontend/components/DeadlinePicker.tsx
+++ b/frontend/components/DeadlinePicker.tsx
@@ -0,0 +1,130 @@
+"use client";
+
+/** 发帖截止时间：快捷天数 + 自定义时刻 */
+
+export type DeadlineMode = "preset" | "custom";
+
+function pad2(n: number) {
+  return String(n).padStart(2, "0");
+}
+
+/** datetime-local 值（本地时区） */
+export function toLocalInputValue(d: Date): string {
+  return `${d.getFullYear()}-${pad2(d.getMonth() + 1)}-${pad2(d.getDate())}T${pad2(d.getHours())}:${pad2(d.getMinutes())}`;
+}
+
+/** 默认自定义：从现在起 +N 天 */
+export function defaultCustomLocal(days = 7): string {
+  const d = new Date();
+  d.setDate(d.getDate() + days);
+  d.setSeconds(0, 0);
+  return toLocalInputValue(d);
+}
+
+/** 本地 datetime-local → RFC3339（UTC） */
+export function localInputToRFC3339(local: string): string | null {
+  const t = Date.parse(local);
+  if (!Number.isFinite(t)) return null;
+  return new Date(t).toISOString().replace(/\.\d{3}Z$/, "Z");
+}
+
+export function formatLocalPreview(local: string): string {
+  const t = Date.parse(local);
+  if (!Number.isFinite(t)) return "";
+  try {
+    return new Date(t).toLocaleString("zh-CN");
+  } catch {
+    return local;
+  }
+}
+
+export default function DeadlinePicker({
+  label = "截止时间",
+  presets,
+  mode,
+  onModeChange,
+  days,
+  onDaysChange,
+  customLocal,
+  onCustomLocalChange,
+  disabled,
+  hint,
+}: {
+  label?: string;
+  presets: readonly number[];
+  mode: DeadlineMode;
+  onModeChange: (m: DeadlineMode) => void;
+  days: number;
+  onDaysChange: (d: number) => void;
+  customLocal: string;
+  onCustomLocalChange: (v: string) => void;
+  disabled?: boolean;
+  hint?: string;
+}) {
+  const minLocal = toLocalInputValue(new Date(Date.now() + 60 * 60 * 1000));
+  const maxLocal = toLocalInputValue(new Date(Date.now() + 90 * 24 * 60 * 60 * 1000));
+
+  return (
+    <div className="j13-deadline-picker">
+      <div className="j13-deadline-picker-label">{label}</div>
+      <div className="j13-deadline-picker-modes" role="tablist" aria-label={label}>
+        <button
+          type="button"
+          role="tab"
+          aria-selected={mode === "preset"}
+          className={`j13-deadline-mode${mode === "preset" ? " is-on" : ""}`}
+          disabled={disabled}
+          onClick={() => onModeChange("preset")}
+        >
+          快捷时长
+        </button>
+        <button
+          type="button"
+          role="tab"
+          aria-selected={mode === "custom"}
+          className={`j13-deadline-mode${mode === "custom" ? " is-on" : ""}`}
+          disabled={disabled}
+          onClick={() => {
+            onModeChange("custom");
+            if (!customLocal) onCustomLocalChange(defaultCustomLocal(days || 7));
+          }}
+        >
+          指定时刻
+        </button>
+      </div>
+
+      {mode === "preset" ? (
+        <div className="j13-deadline-presets">
+          {presets.map((d) => (
+            <button
+              key={d}
+              type="button"
+              className={`btn btn-sm ${days === d ? "btn-primary" : "btn-line"}`}
+              disabled={disabled}
+              onClick={() => onDaysChange(d)}
+            >
+              {d} 天
+            </button>
+          ))}
+        </div>
+      ) : (
+        <div className="j13-deadline-custom">
+          <input
+            type="datetime-local"
+            className="j13-compose-field j13-deadline-datetime"
+            value={customLocal}
+            min={minLocal}
+            max={maxLocal}
+            disabled={disabled}
+            onChange={(e) => onCustomLocalChange(e.target.value)}
+            aria-label="指定截止时刻"
+          />
+          {customLocal ? (
+            <p className="meta text-[12.5px] !mb-0">将于 {formatLocalPreview(customLocal)} 截止</p>
+          ) : null}
+        </div>
+      )}
+      {hint ? <p className="meta text-[12px] !mb-0">{hint}</p> : null}
+    </div>
+  );
+}
--- a/frontend/components/PostComposer.tsx
+++ b/frontend/components/PostComposer.tsx
--- a/frontend/components/PostInteractPanels.tsx
+++ b/frontend/components/PostInteractPanels.tsx
@@ -1,13 +1,12 @@
 "use client";

-import { useState } from "react";
+import { useState, useEffect } from "react";
 import { useRouter } from "next/navigation";
 import Link from "next/link";
+import { Gift, Trophy, CheckCircle2, Timer, BarChart3, Coins, CircleHelp } from "lucide-react";
 import {
  apiVotePoll,
  apiClosePoll,
-  apiRefundBounty,
-  apiCloseLottery,
  apiDrawLottery,
  apiSolveQuestion,
  apiReopenQuestion,
@@ -32,12 +31,13 @@ export default function PostInteractPanels({
  lottery?: LotteryState | null;
  loggedIn: boolean;
 }) {
-  // 问答状态改在正文下方展示（未解决 / 已解决资料卡），此处不再放
-  if (!poll && !bounty && !lottery) return null;
+  // 问答 / 已采纳悬赏改在正文下方 AcceptedAnswerCard，此处不再放
+  const showBounty = !!bounty && !bounty.accepted_comment_id;
+  if (!poll && !showBounty && !lottery) return null;
  return (
    <div className="j13-interact-below space-y-4">
      {poll && <PollPanel postId={postId} state={poll} loggedIn={loggedIn} />}
-      {bounty && <BountyPanel postId={postId} state={bounty} />}
+      {showBounty && <BountyPanel postId={postId} state={bounty!} />}
      {lottery && <LotteryPanel postId={postId} state={lottery} />}
    </div>
  );
@@ -52,6 +52,129 @@ function formatEndsAt(iso?: string) {
  }
 }

+/** 底栏右侧：进行中显示截止时间，结束后显示结束时间 */
+function TypedFootTime({
+  endsAt,
+  endedAt,
+  ended,
+}: {
+  endsAt?: string;
+  endedAt?: string;
+  ended?: boolean;
+}) {
+  if (ended) {
+    const t = endedAt || endsAt;
+    if (!t) return null;
+    return <span className="j13-typed-foot-time">结束时间: {formatEndsAt(t)}</span>;
+  }
+  if (!endsAt) return null;
+  return <span className="j13-typed-foot-time">截止时间: {formatEndsAt(endsAt)}</span>;
+}
+
+function pad2(n: number) {
+  return String(Math.max(0, n)).padStart(2, "0");
+}
+
+function remainParts(endsAtMs: number, now: number) {
+  const ms = Math.max(0, endsAtMs - now);
+  const totalSec = Math.floor(ms / 1000);
+  return {
+    days: Math.floor(totalSec / 86400),
+    hours: Math.floor((totalSec % 86400) / 3600),
+    mins: Math.floor((totalSec % 3600) / 60),
+    secs: totalSec % 60,
+    expired: ms <= 0,
+  };
+}
+
+/** 未截止倒计时：最小单位秒，每秒刷新 */
+function DeadlineCountdown({
+  endsAt,
+  activeLabel = "距截止还剩",
+  expiredLabel = "已到截止时间",
+  expiredHint = "等待处理",
+}: {
+  endsAt: string;
+  activeLabel?: string;
+  expiredLabel?: string;
+  expiredHint?: string;
+}) {
+  const endsMs = Date.parse(endsAt);
+  const [now, setNow] = useState<number | null>(null);
+
+  useEffect(() => {
+    if (!Number.isFinite(endsMs)) return;
+    const tick = () => setNow(Date.now());
+    tick();
+    const id = window.setInterval(tick, 1000);
+    return () => window.clearInterval(id);
+  }, [endsMs]);
+
+  if (!Number.isFinite(endsMs)) return null;
+
+  if (now === null) {
+    return (
+      <div className="j13-deadline-countdown" aria-hidden="true">
+        <div className="j13-deadline-countdown-label">
+          <Timer size={15} strokeWidth={2.25} aria-hidden />
+          {activeLabel}
+        </div>
+        <div className="j13-deadline-countdown-digits">
+          {["天", "时", "分", "秒"].map((suf) => (
+            <span key={suf} className={`j13-deadline-countdown-unit${suf === "秒" ? " is-sec" : ""}`}>
+              <span className="j13-deadline-countdown-num tabular-nums">--</span>
+              <span className="j13-deadline-countdown-suf">{suf}</span>
+            </span>
+          ))}
+        </div>
+        <p className="j13-deadline-countdown-ends">截止于 {formatEndsAt(endsAt)}</p>
+      </div>
+    );
+  }
+
+  const r = remainParts(endsMs, now);
+
+  return (
+    <div
+      className={`j13-deadline-countdown${r.expired ? " is-expired" : ""}`}
+      role="timer"
+      aria-live="polite"
+      aria-atomic="true"
+    >
+      <div className="j13-deadline-countdown-label">
+        <Timer size={15} strokeWidth={2.25} aria-hidden />
+        {r.expired ? expiredLabel : activeLabel}
+      </div>
+      {r.expired ? (
+        <p className="j13-deadline-countdown-expired">{expiredHint}</p>
+      ) : (
+        <div
+          className="j13-deadline-countdown-digits"
+          aria-label={`还剩 ${r.days} 天 ${r.hours} 时 ${r.mins} 分 ${r.secs} 秒`}
+        >
+          <span className="j13-deadline-countdown-unit">
+            <span className="j13-deadline-countdown-num tabular-nums">{pad2(r.days)}</span>
+            <span className="j13-deadline-countdown-suf">天</span>
+          </span>
+          <span className="j13-deadline-countdown-unit">
+            <span className="j13-deadline-countdown-num tabular-nums">{pad2(r.hours)}</span>
+            <span className="j13-deadline-countdown-suf">时</span>
+          </span>
+          <span className="j13-deadline-countdown-unit">
+            <span className="j13-deadline-countdown-num tabular-nums">{pad2(r.mins)}</span>
+            <span className="j13-deadline-countdown-suf">分</span>
+          </span>
+          <span className="j13-deadline-countdown-unit is-sec">
+            <span className="j13-deadline-countdown-num tabular-nums">{pad2(r.secs)}</span>
+            <span className="j13-deadline-countdown-suf">秒</span>
+          </span>
+        </div>
+      )}
+      <p className="j13-deadline-countdown-ends">截止于 {formatEndsAt(endsAt)}</p>
+    </div>
+  );
+}
+
 /** 正文下方的问答状态卡（未解决 / 仅标记已解决）；有采纳答案时改用 AcceptedAnswerCard */
 export function QuestionStatusCard({ postId, state }: { postId: number; state: QuestionState }) {
  const router = useRouter();
@@ -70,57 +193,80 @@ export function QuestionStatusCard({ postId, state }: { postId: number; state: Q
    }
  };

+  const statusBadge = state.solved
+    ? { cls: "badge-status badge-status-solved", label: "已解决" }
+    : { cls: "badge-status badge-status-unsolved", label: "未解决" };
+
+  const footLeft = state.solved
+    ? state.accepted_comment_id
+      ? "已采纳答案"
+      : "已标记解决"
+    : "等待解答";
+
  return (
-    <section
-      className={`j13-interact-card j13-question-below${state.solved ? " is-solved" : " is-unsolved"}`}
-      aria-label={`问答 · ${state.solved ? "已解决" : "未解决"}`}
-    >
-      <div className="flex flex-wrap items-center justify-between gap-3">
-        <div>
-          <h2 className="text-[15px] font-medium" style={{ color: "var(--ink)" }}>
-            问答 · {state.solved ? "已解决" : "未解决"}
+    <section className="j13-interact-card j13-typed-card" aria-label={`问答 · ${statusBadge.label}`}>
+      <div className="j13-typed-head">
+        <div className="j13-typed-head-main">
+          <h2 className="j13-typed-title is-question">
+            <CircleHelp size={16} strokeWidth={2.25} aria-hidden />
+            问答
          </h2>
-          <p className="meta text-[12.5px] mt-1">
-            {state.solved
-              ? state.accepted_comment_id
-                ? (
-                    <>
-                      已采纳{" "}
-                      <a
-                        href={`#comment-${state.accepted_comment_id}`}
-                        className="hover:underline"
-                        style={{ color: "var(--accent)" }}
-                      >
-                        #{state.accepted_floor || "?"}
-                      </a>
-                    </>
-                  )
-                : "作者已标记为已解决"
-              : "可在评论旁采纳答案，或手动标记已解决"}
-          </p>
-        </div>
-        <div className="flex flex-wrap gap-2">
-          {state.can_solve && (
-            <button
-              type="button"
-              className="btn btn-line btn-sm"
-              disabled={busy}
-              onClick={() => void act(() => apiSolveQuestion(String(postId)), "已标记为已解决")}
-            >
-              标记已解决
-            </button>
-          )}
-          {state.can_reopen && (
-            <button
-              type="button"
-              className="btn btn-line btn-sm"
-              disabled={busy}
-              onClick={() => void act(() => apiReopenQuestion(String(postId)), "已重新打开")}
-            >
-              重新打开
-            </button>
-          )}
+          <span className={statusBadge.cls}>{statusBadge.label}</span>
        </div>
+        {(state.can_solve || state.can_reopen) && (
+          <div className="j13-typed-actions">
+            {state.can_solve && (
+              <button
+                type="button"
+                className="btn btn-line btn-sm"
+                disabled={busy}
+                onClick={() => void act(() => apiSolveQuestion(String(postId)), "已标记为已解决")}
+              >
+                标记已解决
+              </button>
+            )}
+            {state.can_reopen && (
+              <button
+                type="button"
+                className="btn btn-line btn-sm"
+                disabled={busy}
+                onClick={() => void act(() => apiReopenQuestion(String(postId)), "已重新打开")}
+              >
+                重新打开
+              </button>
+            )}
+          </div>
+        )}
+      </div>
+
+      <p className="j13-typed-meta">
+        {state.solved
+          ? state.accepted_comment_id
+            ? (
+                <>
+                  已采纳{" "}
+                  <a
+                    href={`#comment-${state.accepted_comment_id}`}
+                    className="hover:underline"
+                    style={{ color: "var(--accent)" }}
+                  >
+                    #{state.accepted_floor || "?"}
+                  </a>
+                </>
+              )
+            : "作者已标记为已解决"
+          : "可在评论旁采纳答案，或手动标记已解决"}
+      </p>
+
+      <div className="j13-typed-foot">
+        <span className="j13-typed-foot-status">
+          <CheckCircle2 size={14} strokeWidth={2.25} aria-hidden />
+          {footLeft}
+        </span>
+        <TypedFootTime
+          ended={state.solved}
+          endedAt={state.solved_at || state.accepted_answer?.created_at}
+        />
      </div>
    </section>
  );
@@ -139,6 +285,7 @@ function PollPanel({
  const [sel, setSel] = useState<number[]>(state.my_options || []);
  const [busy, setBusy] = useState(false);
  const showResults = state.closed || (state.my_options && state.my_options.length > 0);
+  const hasVoted = (state.my_options?.length ?? 0) > 0;

  const toggle = (idx: number) => {
    if (!state.can_vote) return;
@@ -183,19 +330,56 @@ function PollPanel({
    }
  };

+  const statusBadge = state.closed
+    ? { cls: "badge-status badge-status-closed", label: "已结束" }
+    : { cls: "badge-status badge-status-open", label: "进行中" };
+
+  const footLeft = state.closed
+    ? "已结束投票"
+    : hasVoted
+      ? "你已完成投票"
+      : "投票进行中";
+
  return (
-    <section className="j13-interact-card">
-      <div className="flex items-center justify-between gap-3 mb-3">
-        <h2 className="font-semibold text-[15px]" style={{ color: "var(--ink)" }}>
-          投票{state.multi ? "（多选）" : "（单选）"}
-          {state.anonymous ? " · 匿名" : " · 实名"}
-        </h2>
-        <span className="meta text-[12.5px]">
-          {state.voters} 人参与 · {state.total_votes} 票
-          {state.closed ? " · 已结束" : ""}
-        </span>
+    <section className="j13-interact-card j13-typed-card" aria-label="投票">
+      <div className="j13-typed-head">
+        <div className="j13-typed-head-main">
+          <h2 className="j13-typed-title is-poll">
+            <BarChart3 size={16} strokeWidth={2.25} aria-hidden />
+            投票
+          </h2>
+          <span className={statusBadge.cls}>{statusBadge.label}</span>
+        </div>
+        {state.can_close && (
+          <div className="j13-typed-actions">
+            <button
+              type="button"
+              className="btn btn-line btn-sm"
+              disabled={busy}
+              onClick={() => void close()}
+            >
+              结束投票
+            </button>
+          </div>
+        )}
      </div>
-      <ul className="space-y-2">
+
+      <p className="j13-typed-meta">
+        {state.multi ? "多选" : "单选"}
+        {state.anonymous ? " · 匿名" : " · 实名"}
+        {" · "}
+        {state.voters} 人参与 · {state.total_votes} 票
+      </p>
+
+      {!state.closed && state.ends_at ? (
+        <DeadlineCountdown
+          endsAt={state.ends_at}
+          expiredLabel="已到截止时间"
+          expiredHint="投票即将关闭"
+        />
+      ) : null}
+
+      <ul className="j13-poll-options">
        {state.options.map((o) => {
          const checked = sel.includes(o.index);
          const namedVoters = !state.anonymous && showResults ? o.voters || [] : [];
@@ -205,43 +389,32 @@ function PollPanel({
                type="button"
                disabled={!state.can_vote || busy}
                onClick={() => toggle(o.index)}
-                className="w-full text-left rounded-[12px] px-3 py-2.5 relative overflow-hidden transition-colors"
-                style={{
-                  border: `1px solid ${checked ? "var(--accent)" : "var(--line)"}`,
-                  background: checked ? "var(--accent-soft)" : "var(--panel)",
-                }}
+                className={`j13-poll-option${checked ? " is-on" : ""}`}
              >
                {showResults && (
                  <span
-                    className="absolute inset-y-0 left-0 opacity-30"
-                    style={{
-                      width: `${o.percent}%`,
-                      background: "var(--accent)",
-                    }}
+                    className="j13-poll-option-bar"
+                    style={{ width: `${o.percent}%` }}
                    aria-hidden
                  />
                )}
-                <span className="relative flex items-center justify-between gap-3">
-                  <span className="text-[14px]" style={{ color: "var(--ink)" }}>
+                <span className="j13-poll-option-row">
+                  <span className="j13-poll-option-text">
                    {state.can_vote ? (checked ? "✓ " : "") : ""}
                    {o.text}
                  </span>
                  {showResults && (
-                    <span className="meta tabular-nums text-[12.5px] shrink-0">
+                    <span className="j13-poll-option-stat tabular-nums">
                      {o.votes} · {o.percent}%
                    </span>
                  )}
                </span>
              </button>
              {namedVoters.length > 0 && (
-                <ul className="mt-1.5 flex flex-wrap gap-1.5 px-1">
+                <ul className="j13-poll-voters">
                  {namedVoters.map((v) => (
                    <li key={v.id}>
-                      <Link
-                        href={`/u/${v.id}`}
-                        className="inline-flex items-center gap-1.5 rounded-full px-2 py-0.5 text-[12px]"
-                        style={{ background: "var(--accent-soft)", color: "var(--accent)" }}
-                      >
+                      <Link href={`/u/${v.id}`} className="j13-poll-voter">
                        <Avatar name={v.nickname || v.username} src={v.avatar || undefined} size={16} />
                        {v.nickname || v.username}
                      </Link>
@@ -253,106 +426,121 @@ function PollPanel({
          );
        })}
      </ul>
-      <div className="mt-3 flex flex-wrap gap-2">
-        {state.can_vote && (
-          <button type="button" className="btn btn-primary btn-sm" disabled={busy} onClick={() => void vote()}>
-            提交投票
-          </button>
-        )}
-        {!loggedIn && !state.closed && (
-          <Link href={`/login?redirect=${encodeURIComponent(`/post/${postId}`)}`} className="btn btn-line btn-sm">
-            登录后投票
-          </Link>
-        )}
-        {state.can_close && (
-          <button
-            type="button"
-            className="btn btn-line btn-sm"
-            disabled={busy}
-            onClick={() => void close()}
-          >
-            结束投票
-          </button>
-        )}
+
+      {(state.can_vote || (!loggedIn && !state.closed)) && (
+        <div className="j13-typed-actions-row">
+          {state.can_vote && (
+            <button
+              type="button"
+              className="btn btn-primary btn-sm"
+              disabled={busy}
+              onClick={() => void vote()}
+            >
+              提交投票
+            </button>
+          )}
+          {!loggedIn && !state.closed && (
+            <Link
+              href={`/login?redirect=${encodeURIComponent(`/post/${postId}`)}`}
+              className="btn btn-line btn-sm"
+            >
+              登录后投票
+            </Link>
+          )}
+        </div>
+      )}
+
+      <div className="j13-typed-foot">
+        <span className="j13-typed-foot-status">
+          <CheckCircle2 size={14} strokeWidth={2.25} aria-hidden />
+          {footLeft}
+        </span>
+        <TypedFootTime
+          ended={state.closed}
+          endsAt={state.ends_at}
+          endedAt={state.closed_at}
+        />
      </div>
    </section>
  );
 }

-function BountyPanel({ postId, state }: { postId: number; state: BountyState }) {
-  const router = useRouter();
-  const [busy, setBusy] = useState(false);
-  const [confirming, setConfirming] = useState(false);
+function BountyPanel({ state }: { postId: number; state: BountyState }) {
+  const statusBadge = state.accepted_comment_id
+    ? { cls: "badge-status badge-status-solved", label: "已采纳" }
+    : state.expired || state.refunded
+      ? { cls: "badge-status badge-status-closed", label: "已过期" }
+      : { cls: "badge-status badge-status-open", label: "进行中" };

-  const refund = async () => {
-    if (!confirming) {
-      setConfirming(true);
-      window.setTimeout(() => setConfirming(false), 3000);
-      return;
-    }
-    setBusy(true);
-    try {
-      const res = await apiRefundBounty(String(postId));
-      if (res.post) {
-        toast("悬赏已退回", "ok");
-        router.refresh();
-      } else toast(res.error || "退回失败", "error");
-    } finally {
-      setBusy(false);
-      setConfirming(false);
-    }
-  };
+  const footLeft = state.accepted_comment_id
+    ? "悬赏已完成"
+    : state.expired || state.refunded
+      ? state.can_accept
+        ? "已过期退回 · 仍可采纳支付"
+        : "悬赏已过期退回"
+      : "悬赏进行中";

-  const statusText = state.expired
-    ? "已过期，积分已自动退回"
-    : state.refunded
-      ? "已退回给发帖人"
-      : state.accepted_comment_id
-        ? null
+  const bodyHint = state.accepted_answer
+    ? "悬赏积分已发放给采纳答案"
+    : state.accepted_comment_id
+      ? null
+      : state.expired || state.refunded
+        ? state.can_accept
+          ? "到期未采纳已自动退回；采纳将从余额扣除，支付后不可撤回"
+          : "积分已自动退回发帖人"
        : state.escrowed
-          ? "积分已托管，采纳优质回答后发放"
+          ? "积分已托管，采纳优质回答后发放；到期未采纳自动退回"
          : "悬赏未托管";

  return (
-    <section className="j13-interact-card">
-      <div className="flex flex-wrap items-center justify-between gap-3">
-        <div>
-          <h2 className="font-semibold text-[15px]" style={{ color: "var(--ink)" }}>
-            悬赏 {state.points} 积分
+    <section className="j13-interact-card j13-typed-card" aria-label="悬赏">
+      <div className="j13-typed-head">
+        <div className="j13-typed-head-main">
+          <h2 className="j13-typed-title is-bounty">
+            <Coins size={16} strokeWidth={2.25} aria-hidden />
+            悬赏
          </h2>
-          <p className="meta text-[12.5px] mt-1">
-            {state.accepted_answer
-              ? "悬赏积分已发放给采纳答案"
-              : state.accepted_comment_id
-                ? (
-                    <>
-                      已采纳{" "}
-                      <a
-                        href={`#comment-${state.accepted_comment_id}`}
-                        className="hover:underline"
-                        style={{ color: "var(--accent)" }}
-                      >
-                        #{state.accepted_floor || "?"}
-                      </a>
-                    </>
-                  )
-                : statusText}
-            {state.ends_at && !state.settled ? ` · 截止 ${formatEndsAt(state.ends_at)}` : ""}
-          </p>
+          <span className={statusBadge.cls}>{statusBadge.label}</span>
        </div>
-        {state.can_refund && (
-          <button
-            type="button"
-            className={`btn btn-sm ${confirming ? "btn-primary" : "btn-line"}`}
-            disabled={busy}
-            onClick={() => void refund()}
+      </div>
+
+      <p className="j13-typed-meta">
+        <span className="j13-bounty-points tabular-nums">{state.points} 积分</span>
+        {bodyHint ? ` · ${bodyHint}` : null}
+        {state.can_accept ? " · 在评论旁点击「采纳」发放积分" : null}
+      </p>
+
+      {!state.accepted_comment_id && state.ends_at ? (
+        <DeadlineCountdown
+          endsAt={state.ends_at}
+          expiredLabel="已到截止时间"
+          expiredHint={state.can_accept ? "已自动退回，仍可采纳并支付" : "等待处理"}
+        />
+      ) : null}
+
+      {state.accepted_comment_id > 0 && (
+        <p className="j13-typed-meta">
+          已采纳{" "}
+          <a
+            href={`#comment-${state.accepted_comment_id}`}
+            className="hover:underline"
+            style={{ color: "var(--accent)" }}
          >
-            {confirming ? "再点确认退回" : "退回悬赏"}
-          </button>
-        )}
-        {state.can_accept && (
-          <p className="meta text-[12.5px]">在评论旁点击「采纳」发放积分</p>
-        )}
+            #{state.accepted_floor || "?"}
+          </a>
+        </p>
+      )}
+
+      <div className="j13-typed-foot">
+        <span className="j13-typed-foot-status">
+          <CheckCircle2 size={14} strokeWidth={2.25} aria-hidden />
+          {footLeft}
+        </span>
+        <TypedFootTime
+          ended={!!state.accepted_comment_id || state.expired || state.refunded}
+          endsAt={state.ends_at}
+          endedAt={state.ends_at}
+        />
      </div>
    </section>
  );
@@ -381,35 +569,28 @@ function LotteryPanel({
    }
  };

+  const prizes = state.prizes?.length
+    ? state.prizes
+    : state.slots > 0
+      ? [{ name: "奖品", count: state.slots }]
+      : [];
+
+  const statusBadge = state.drawn
+    ? { cls: "badge-status badge-status-closed", label: "已开奖" }
+    : { cls: "badge-status badge-status-open", label: "进行中" };
+
  return (
-    <section className="j13-interact-card">
-      <div className="flex flex-wrap items-center justify-between gap-3 mb-3">
-        <div>
-          <h2 className="font-semibold text-[15px]" style={{ color: "var(--ink)" }}>
-            抽奖 · {state.slots} 个名额
+    <section className="j13-interact-card j13-typed-card" aria-label="抽奖">
+      <div className="j13-typed-head">
+        <div className="j13-typed-head-main">
+          <h2 className="j13-typed-title is-lottery">
+            <Gift size={16} strokeWidth={2.25} aria-hidden />
+            抽奖
          </h2>
-          <p className="meta text-[12.5px] mt-1">
-            已有 {state.entry_count} 名回帖用户参与
-            {state.drawn ? " · 已开奖" : state.closed ? " · 已截止" : ""}
-            {state.eligible && !state.drawn ? " · 你已在奖池中" : ""}
-            {state.ends_at && !state.drawn ? ` · 截止 ${formatEndsAt(state.ends_at)}` : ""}
-          </p>
-          {!state.drawn && (
-            <p className="meta text-[12px] mt-1">对本帖发表评论即可参与（楼主除外）</p>
-          )}
+          <span className={statusBadge.cls}>{statusBadge.label}</span>
        </div>
-        <div className="flex flex-wrap gap-2">
-          {state.can_close && (
-            <button
-              type="button"
-              className="btn btn-line btn-sm"
-              disabled={busy}
-              onClick={() => void act(() => apiCloseLottery(String(postId)), "已截止")}
-            >
-              提前截止
-            </button>
-          )}
-          {state.can_draw && (
+        {state.can_draw && (
+          <div className="j13-typed-actions">
            <button
              type="button"
              className="btn btn-primary btn-sm"
@@ -418,38 +599,83 @@ function LotteryPanel({
            >
              开奖
            </button>
-          )}
-        </div>
+          </div>
+        )}
      </div>
+
+      {(state.can_draw || (state.eligible && !state.drawn)) && (
+        <p className="j13-typed-meta">
+          {state.can_draw ? `已有 ${state.entry_count} 名主评用户入池` : null}
+          {state.can_draw && state.eligible && !state.drawn ? " · " : null}
+          {state.eligible && !state.drawn ? "你已在奖池中" : null}
+        </p>
+      )}
+
+      {!state.drawn && state.ends_at ? (
+        <DeadlineCountdown
+          endsAt={state.ends_at}
+          expiredLabel="已到截止时间"
+          expiredHint="等待开奖"
+        />
+      ) : null}
+
+      {prizes.length > 0 && (
+        <ul className="j13-lottery-prize-row" aria-label="奖品">
+          {prizes.map((prize, i) => (
+            <li key={`${prize.name}-${i}`}>
+              <div className="j13-lottery-prize-chip" title={`${prize.name} ×${prize.count}`}>
+                <Trophy size={13} strokeWidth={2.25} aria-hidden />
+                <span className="j13-lottery-prize-chip-text">
+                  {prize.name}
+                  <span className="j13-lottery-prize-chip-count">×{prize.count}</span>
+                </span>
+              </div>
+            </li>
+          ))}
+        </ul>
+      )}
+
      {state.drawn && (
-        <div>
-          <p className="font-semibold text-[13px] mb-2" style={{ color: "var(--ink)" }}>
-            {state.winners.length > 0 ? "中奖名单" : "无人回帖，开奖结果为空"}
-          </p>
-          {state.winners.length > 0 && (
-            <ul className="flex flex-wrap gap-3">
+        <>
+          <p className="j13-lottery-winners-label">中奖名单</p>
+          {state.winners.length > 0 ? (
+            <ul className="j13-lottery-winner-row">
              {state.winners.map((w) => (
-                <li key={w.id}>
-                  <span className="badge-winner inline-flex items-center gap-2 !py-1.5 !px-2.5 !text-[13px] !font-medium">
-                    <Link href={`/u/${w.id}`} className="inline-flex items-center gap-2 min-w-0">
-                      <Avatar name={w.nickname || w.username} src={w.avatar || undefined} size={22} />
-                      <span className="truncate">{w.nickname || w.username}</span>
-                    </Link>
-                    {w.comment_id && w.floor ? (
-                      <a
-                        href={`#comment-${w.comment_id}`}
-                        className="opacity-90 hover:underline shrink-0"
-                      >
-                        #{w.floor}
-                      </a>
-                    ) : null}
-                  </span>
+                <li key={`${w.id}-${w.comment_id || 0}`}>
+                  <div className="j13-lottery-winner">
+                    <Avatar
+                      name={w.nickname || w.username}
+                      src={w.avatar || undefined}
+                      size={36}
+                      className="j13-lottery-winner-avatar"
+                    />
+                    <div className="j13-lottery-winner-body">
+                      <Link href={`/u/${w.id}`} className="j13-lottery-winner-name">
+                        {w.nickname || w.username}
+                      </Link>
+                      {w.prize_name ? (
+                        <span className="j13-lottery-winner-prize">{w.prize_name}</span>
+                      ) : null}
+                    </div>
+                  </div>
                </li>
              ))}
            </ul>
+          ) : (
+            <p className="j13-typed-empty">无人回帖，开奖结果为空</p>
          )}
-        </div>
+        </>
      )}
+
+      <div className="j13-typed-foot">
+        <span className="j13-typed-foot-status">
+          <CheckCircle2 size={14} strokeWidth={2.25} aria-hidden />
+          {state.drawn ? "开奖完成" : "抽奖进行中"}
+        </span>
+        {state.ends_at ? (
+          <span className="j13-typed-foot-time">截止时间: {formatEndsAt(state.ends_at)}</span>
+        ) : null}
+      </div>
    </section>
  );
 }
--- a/frontend/lib/api.ts
+++ b/frontend/lib/api.ts
@@ -254,6 +254,7 @@ export interface QuestionState {
  accepted_comment_id: number;
  accepted_floor: number;
  accepted_answer?: AcceptedAnswer | null;
+  solved_at?: string;
  can_accept: boolean;
  can_solve: boolean;
  can_reopen: boolean;
@@ -279,6 +280,8 @@ export interface PollState {
  multi: boolean;
  closed: boolean;
  anonymous: boolean;
+  ends_at?: string;
+  closed_at?: string;
  total_votes: number;
  voters: number;
  my_options: number[];
@@ -298,7 +301,11 @@ export interface BountyState {
  ends_at?: string;
  settled: boolean;
  can_accept: boolean;
-  can_refund: boolean;
+}
+
+export interface LotteryPrize {
+  name: string;
+  count: number;
 }

 export interface LotteryEntrant {
@@ -309,17 +316,21 @@ export interface LotteryEntrant {
  /** 中奖楼层评论 ID（该用户最早主评，每人仅一条） */
  comment_id?: number;
  floor?: number;
+  prize_name?: string;
 }

 export interface LotteryState {
  slots: number;
+  prizes: LotteryPrize[];
  drawn: boolean;
  closed: boolean;
  ends_at?: string;
  entry_count: number;
  eligible?: boolean;
+  /** 新号入池冷静期小时数（与发帖冷静期同源，0=关闭） */
+  cooldown_hours?: number;
  can_draw: boolean;
-  can_close: boolean;
+  can_edit_prizes?: boolean;
  winners: LotteryEntrant[];
 }

@@ -938,14 +949,6 @@ export async function apiAcceptBounty(postId: string, commentId: number) {
  return res.json();
 }

-export async function apiRefundBounty(postId: string) {
-  const res = await fetchWithRefresh(`/api/posts/${postId}/bounty/refund`, {
-    method: "POST",
-    headers: clientHeaders(),
-  });
-  return res.json();
-}
-
 export async function apiAcceptQuestion(postId: string, commentId: number) {
  const res = await fetchWithRefresh(`/api/posts/${postId}/question/accept`, {
    method: "POST",
@@ -971,14 +974,6 @@ export async function apiReopenQuestion(postId: string) {
  return res.json();
 }

-export async function apiCloseLottery(postId: string) {
-  const res = await fetchWithRefresh(`/api/posts/${postId}/lottery/close`, {
-    method: "POST",
-    headers: clientHeaders(),
-  });
-  return res.json();
-}
-
 export async function apiDrawLottery(postId: string) {
  const res = await fetchWithRefresh(`/api/posts/${postId}/lottery/draw`, {
    method: "POST",
--- a/frontend/lib/postMeta.ts
+++ b/frontend/lib/postMeta.ts
@@ -5,7 +5,7 @@ export const POST_TYPES = [
  { value: "question", label: "问答", hint: "提问求解" },
  { value: "poll", label: "投票", hint: "发起投票，读者可参与" },
  { value: "bounty", label: "悬赏", hint: "发布时托管积分，采纳后发放" },
-  { value: "lottery", label: "抽奖", hint: "回帖即参与，截止自动开奖" },
+  { value: "lottery", label: "抽奖", hint: "奖品类型+数量入池，评论后锁定奖品" },
 ] as const;

 export type PostTypeValue = (typeof POST_TYPES)[number]["value"];
@@ -21,6 +21,7 @@ export type ContentAccessValue = (typeof CONTENT_ACCESS)[number]["value"];

 export const BOUNTY_EXPIRE_DAYS = [3, 7, 14, 30] as const;
 export const LOTTERY_EXPIRE_DAYS = [1, 3, 7, 14] as const;
+export const POLL_EXPIRE_DAYS = [1, 3, 7, 14] as const;

 export function normalizePostType(t?: string): PostTypeValue {
  if (!t) return "discussion";
@@ -74,12 +75,13 @@ export function typeStatusClass(postType?: string, typeStatus?: string): string
      break;
    case "bounty":
      if (s === "solved") kind = "solved";
-      else if (s === "expired") kind = "expired";
+      // 已过期：与投票「已结束」同色（灰胶囊，标识已到期）
+      else if (s === "expired") kind = "closed";
      else kind = "open";
      break;
    case "lottery":
-      if (s === "drawn") kind = "drawn";
-      else if (s === "closed") kind = "closed";
+      // 已开奖 / 已截止：与投票「已结束」同色（灰胶囊）
+      if (s === "drawn" || s === "closed") kind = "closed";
      else kind = "open";
      break;
    default:
--- a/frontend/next-env.d.ts
+++ b/frontend/next-env.d.ts
@@ -1,7 +1,7 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
-import "./.next/types/root-params.d.ts";
+import "./.next/dev/types/routes.d.ts";
+import "./.next/dev/types/root-params.d.ts";

 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.