diff --git a/assets/config.conf b/assets/config.conf
index e0bcdadd..938a1f2f 100644
--- a/assets/config.conf
+++ b/assets/config.conf
@@ -121,6 +121,7 @@ borderpx=4
 rootcolor=0x201b14ff
 bordercolor=0x444444ff
 dropcolor=0x8FBA7C55
+splitcolor=0xEB441EFF
 focuscolor=0xc9b890ff
 maximizescreencolor=0x89aa61ff
 urgentcolor=0xad401fff
diff --git a/src/animation/client.h b/src/animation/client.h
index 8ce81cd2..2b8b7b55 100644
--- a/src/animation/client.h
+++ b/src/animation/client.h
@@ -1,3 +1,4 @@
+#include "wlr/util/log.h"
 void client_actual_size(Client *c, int32_t *width, int32_t *height) {
 	*width = c->animation.current.width - 2 * (int32_t)c->bw;
 
@@ -284,8 +285,8 @@ void client_draw_shadow(Client *c) {
 	struct wlr_box client_box = {
 		.x = bwoffset,
 		.y = bwoffset,
-		.width = width + (int32_t)c->bw - bwoffset,
-		.height = height + (int32_t)c->bw - bwoffset,
+		.width = width + 2 * (int32_t)c->bw - 2 * bwoffset,
+		.height = height + 2 * (int32_t)c->bw - 2 * bwoffset,
 	};
 
 	struct wlr_box shadow_box = {
@@ -350,11 +351,102 @@ void client_draw_shadow(Client *c) {
 	wlr_scene_shadow_set_clipped_region(c->shadow, clipped_region);
 }
 
+void apply_split_border(Client *c, bool hit_no_border) {
+
+	if (c->iskilling || !c->mon || !client_surface(c)->mapped)
+		return;
+
+	const Layout *layout = c->mon->pertag->ltidxs[c->mon->pertag->curtag];
+
+	if (hit_no_border || layout->id != DWINDLE ||
+		!config.dwindle_manual_split) {
+		if (c->splitindicator[0]->node.enabled) {
+			wlr_scene_node_set_enabled(&c->splitindicator[0]->node, false);
+		}
+		if (c->splitindicator[1]->node.enabled) {
+			wlr_scene_node_set_enabled(&c->splitindicator[1]->node, false);
+		}
+		return;
+	} else {
+
+		DwindleNode **root =
+			&c->mon->pertag->dwindle_root[c->mon->pertag->curtag];
+		DwindleNode *dnode = dwindle_find_leaf(*root, c);
+
+		if (!dnode) {
+			wlr_scene_node_set_enabled(&c->splitindicator[0]->node, false);
+			wlr_scene_node_set_enabled(&c->splitindicator[1]->node, false);
+			return;
+		} else {
+			if (dnode->custom_leaf_split_h) {
+				wlr_scene_node_set_enabled(&c->splitindicator[0]->node, false);
+				wlr_scene_node_set_enabled(&c->splitindicator[1]->node, true);
+			} else {
+				wlr_scene_node_set_enabled(&c->splitindicator[0]->node, true);
+				wlr_scene_node_set_enabled(&c->splitindicator[1]->node, false);
+			}
+		}
+	}
+
+	struct wlr_box fullgeom = c->animation.current;
+	// 一但在GEZERO如果使用无符号，那么其他数据也会转换为无符号导致没有负数出错
+	int32_t bw = (int32_t)c->bw;
+
+	int32_t right_offset, bottom_offset, left_offset, top_offset;
+
+	if (c == grabc) {
+		right_offset = 0;
+		bottom_offset = 0;
+		left_offset = 0;
+		top_offset = 0;
+	} else {
+		right_offset =
+			GEZERO(c->animation.current.x + c->animation.current.width -
+				   c->mon->m.x - c->mon->m.width);
+		bottom_offset =
+			GEZERO(c->animation.current.y + c->animation.current.height -
+				   c->mon->m.y - c->mon->m.height);
+
+		left_offset = GEZERO(c->mon->m.x - c->animation.current.x);
+		top_offset = GEZERO(c->mon->m.y - c->animation.current.y);
+	}
+
+	int32_t border_down_width = GEZERO(fullgeom.width - left_offset -
+									   right_offset - 2 * config.border_radius);
+	int32_t border_down_height =
+		GEZERO(bw - bottom_offset - GEZERO(top_offset + bw - fullgeom.height));
+
+	int32_t border_right_width =
+		GEZERO(bw - right_offset - GEZERO(left_offset + bw - fullgeom.width));
+	int32_t border_right_height =
+		GEZERO(fullgeom.height - top_offset - bottom_offset -
+			   2 * config.border_radius);
+
+	int32_t border_down_x = GEZERO(config.border_radius - left_offset);
+	int32_t border_down_y = GEZERO(fullgeom.height - bw) +
+							GEZERO(top_offset + bw - fullgeom.height);
+
+	int32_t border_right_x =
+		GEZERO(fullgeom.width - bw) + GEZERO(left_offset + bw - fullgeom.width);
+	int32_t border_right_y = GEZERO(config.border_radius - top_offset);
+
+	set_rect_size(c->splitindicator[0], border_down_width, border_down_height);
+	set_rect_size(c->splitindicator[1], border_right_width,
+				  border_right_height);
+	wlr_scene_node_set_position(&c->splitindicator[0]->node, border_down_x,
+								border_down_y);
+	wlr_scene_node_set_position(&c->splitindicator[1]->node, border_right_x,
+								border_right_y);
+}
+
 void apply_border(Client *c) {
 	if (!c || c->iskilling || !client_surface(c)->mapped)
 		return;
 
 	bool hit_no_border = check_hit_no_border(c);
+
+	apply_split_border(c, hit_no_border);
+
 	enum corner_location current_corner_location;
 	if (c->isfullscreen || (config.no_radius_when_single && c->mon &&
 							c->mon->visible_tiling_clients == 1)) {
@@ -1203,6 +1295,7 @@ bool client_draw_fadeout_frame(Client *c) {
 
 void client_set_focused_opacity_animation(Client *c) {
 	float *border_color = get_border_color(c);
+	wlr_scene_node_lower_to_bottom(&c->border->node);
 
 	if (!config.animations) {
 		setborder_color(c);
@@ -1224,7 +1317,7 @@ void client_set_focused_opacity_animation(Client *c) {
 
 void client_set_unfocused_opacity_animation(Client *c) {
 	float *border_color = get_border_color(c);
-
+	wlr_scene_node_raise_to_top(&c->border->node);
 	if (!config.animations) {
 		setborder_color(c);
 		return;
diff --git a/src/config/parse_config.h b/src/config/parse_config.h
index 9548f13d..c9426c6a 100644
--- a/src/config/parse_config.h
+++ b/src/config/parse_config.h
@@ -249,6 +249,7 @@ typedef struct {
 	int32_t dwindle_smart_split;
 	int32_t dwindle_smart_resize;
 	int32_t dwindle_drop_simple_split;
+	int32_t dwindle_manual_split;
 	float dwindle_split_ratio;
 
 	uint32_t hotarea_size;
@@ -326,6 +327,7 @@ typedef struct {
 	float rootcolor[4];
 	float bordercolor[4];
 	float dropcolor[4];
+	float splitcolor[4];
 	float focuscolor[4];
 	float maximizescreencolor[4];
 	float urgentcolor[4];
@@ -1222,6 +1224,8 @@ FuncType parse_func_name(char *func_name, Arg *arg, char *arg_value,
 		(*arg).i = parse_direction(arg_value);
 	} else if (strcmp(func_name, "toggle_all_floating") == 0) {
 		func = toggle_all_floating;
+	} else if (strcmp(func_name, "dwindle_toggle_split_direction") == 0) {
+		func = dwindle_toggle_split_direction;
 	} else {
 		return NULL;
 	}
@@ -1635,6 +1639,8 @@ bool parse_option(Config *config, char *key, char *value) {
 		config->dwindle_smart_resize = atoi(value);
 	} else if (strcmp(key, "dwindle_drop_simple_split") == 0) {
 		config->dwindle_drop_simple_split = atoi(value);
+	} else if (strcmp(key, "dwindle_manual_split") == 0) {
+		config->dwindle_manual_split = atoi(value);
 	} else if (strcmp(key, "dwindle_split_ratio") == 0) {
 		config->dwindle_split_ratio = atof(value);
 	} else if (strcmp(key, "hotarea_size") == 0) {
@@ -1777,6 +1783,17 @@ bool parse_option(Config *config, char *key, char *value) {
 		} else {
 			convert_hex_to_rgba(config->dropcolor, color);
 		}
+	} else if (strcmp(key, "splitcolor") == 0) {
+		int64_t color = parse_color(value);
+		if (color == -1) {
+			fprintf(stderr,
+					"\033[1m\033[31m[ERROR]:\033[33m Invalid splitcolor "
+					"format: %s\n",
+					value);
+			return false;
+		} else {
+			convert_hex_to_rgba(config->splitcolor, color);
+		}
 	} else if (strcmp(key, "focuscolor") == 0) {
 		int64_t color = parse_color(value);
 		if (color == -1) {
@@ -3209,6 +3226,7 @@ void override_config(void) {
 	config.dwindle_smart_resize = CLAMP_INT(config.dwindle_smart_resize, 0, 1);
 	config.dwindle_drop_simple_split =
 		CLAMP_INT(config.dwindle_drop_simple_split, 0, 1);
+	config.dwindle_manual_split = CLAMP_INT(config.dwindle_manual_split, 0, 1);
 	config.dwindle_split_ratio =
 		CLAMP_FLOAT(config.dwindle_split_ratio, 0.05f, 0.95f);
 	config.hotarea_size = CLAMP_INT(config.hotarea_size, 1, 1000);
@@ -3356,6 +3374,7 @@ void set_value_default() {
 	config.dwindle_smart_split = 0;
 	config.dwindle_smart_resize = 0;
 	config.dwindle_drop_simple_split = 1;
+	config.dwindle_manual_split = 0;
 	config.dwindle_split_ratio = 0.5f;
 
 	config.log_level = WLR_ERROR;
@@ -3503,10 +3522,14 @@ void set_value_default() {
 	config.bordercolor[1] = 0x44 / 255.0f;
 	config.bordercolor[2] = 0x44 / 255.0f;
 	config.bordercolor[3] = 1.0f;
-	config.dropcolor[0] = 0x8f / 255.0f;
-	config.dropcolor[1] = 0xba / 255.0f;
-	config.dropcolor[2] = 0x7c / 255.0f;
+	config.dropcolor[0] = 0xd5 / 255.0f;
+	config.dropcolor[1] = 0x89 / 255.0f;
+	config.dropcolor[2] = 0x9d / 255.0f;
 	config.dropcolor[3] = 0.5f;
+	config.splitcolor[0] = 0xeb / 255.0f;
+	config.splitcolor[1] = 0x44 / 255.0f;
+	config.splitcolor[2] = 0x1e / 255.0f;
+	config.splitcolor[3] = 1.0f;
 	config.focuscolor[0] = 0xc6 / 255.0f;
 	config.focuscolor[1] = 0x6b / 255.0f;
 	config.focuscolor[2] = 0x25 / 255.0f;
@@ -3767,6 +3790,8 @@ void reapply_property(void) {
 			}
 
 			wlr_scene_rect_set_color(c->droparea, config.dropcolor);
+			wlr_scene_rect_set_color(c->splitindicator[0], config.splitcolor);
+			wlr_scene_rect_set_color(c->splitindicator[1], config.splitcolor);
 		}
 	}
 }
diff --git a/src/dispatch/bind_declare.h b/src/dispatch/bind_declare.h
index dbeebd33..41945dda 100644
--- a/src/dispatch/bind_declare.h
+++ b/src/dispatch/bind_declare.h
@@ -70,4 +70,5 @@ int32_t disable_monitor(const Arg *arg);
 int32_t enable_monitor(const Arg *arg);
 int32_t toggle_monitor(const Arg *arg);
 int32_t scroller_stack(const Arg *arg);
-int32_t toggle_all_floating(const Arg *arg);
\ No newline at end of file
+int32_t toggle_all_floating(const Arg *arg);
+int32_t dwindle_toggle_split_direction(const Arg *arg);
\ No newline at end of file
diff --git a/src/dispatch/bind_define.h b/src/dispatch/bind_define.h
index ffeff6f0..22fc16a3 100644
--- a/src/dispatch/bind_define.h
+++ b/src/dispatch/bind_define.h
@@ -1917,3 +1917,28 @@ int32_t toggle_all_floating(const Arg *arg) {
 	}
 	return 0;
 }
+
+int32_t dwindle_toggle_split_direction(const Arg *arg) {
+	if (!selmon || !selmon->sel)
+		return 0;
+
+	Client *c = selmon->sel;
+	if (!c || !c->mon || c->isfloating)
+		return 0;
+
+	const Layout *layout = c->mon->pertag->ltidxs[c->mon->pertag->curtag];
+
+	if (layout->id != DWINDLE)
+		return 0;
+
+	DwindleNode **root = &selmon->pertag->dwindle_root[selmon->pertag->curtag];
+	DwindleNode *leaf = dwindle_find_leaf(*root, c);
+
+	if (!leaf)
+		return 0;
+
+	leaf->custom_leaf_split_h = !leaf->custom_leaf_split_h;
+	bool hit_no_border = check_hit_no_border(c);
+	apply_split_border(c, hit_no_border);
+	return 0;
+}
\ No newline at end of file
diff --git a/src/layout/dwindle.h b/src/layout/dwindle.h
index 94d65be6..bf56d4dc 100644
--- a/src/layout/dwindle.h
+++ b/src/layout/dwindle.h
@@ -1,20 +1,3 @@
-typedef struct DwindleNode DwindleNode;
-struct DwindleNode {
-	bool is_split;
-	bool split_h;
-	bool split_locked;
-	float ratio;
-	float drag_init_ratio;
-	int32_t container_x;
-	int32_t container_y;
-	int32_t container_w;
-	int32_t container_h;
-	DwindleNode *parent;
-	DwindleNode *first;
-	DwindleNode *second;
-	Client *client;
-};
-
 static DwindleNode *dwindle_locked_h_node = NULL;
 static DwindleNode *dwindle_locked_v_node = NULL;
 
@@ -24,6 +7,39 @@ static DwindleNode *dwindle_new_leaf(Client *c) {
 	return n;
 }
 
+// 统计同方向上的节点总和 (N_old)
+static int count_block_items(DwindleNode *node, bool split_h) {
+	if (!node)
+		return 0;
+	if (!node->is_split || node->split_h != split_h)
+		return 1;
+	return count_block_items(node->first, split_h) +
+		   count_block_items(node->second, split_h);
+}
+
+// 向上查找方向块路径，并计算每个祖先节点的绝对占比
+static int get_block_path_and_ratios(DwindleNode *target, bool split_h,
+									 DwindleNode **path, float *p) {
+	int path_len = 0;
+	path[path_len++] = target;
+	DwindleNode *curr = target->parent;
+	while (curr && curr->split_h == split_h) {
+		path[path_len++] = curr;
+		curr = curr->parent;
+	}
+
+	p[path_len - 1] = 1.0f; // 方向块根节点占比为 100%
+	for (int i = path_len - 1; i > 0; i--) {
+		DwindleNode *S = path[i];
+		DwindleNode *child = path[i - 1];
+		if (S->first == child)
+			p[i - 1] = p[i] * S->ratio;
+		else
+			p[i - 1] = p[i] * (1.0f - S->ratio);
+	}
+	return path_len;
+}
+
 static DwindleNode *dwindle_find_leaf(DwindleNode *node, Client *c) {
 	if (!node)
 		return NULL;
@@ -55,6 +71,7 @@ static void dwindle_insert(DwindleNode **root, Client *new_c, Client *focused,
 	DwindleNode *new_leaf = dwindle_new_leaf(new_c);
 
 	if (!*root) {
+		new_leaf->custom_leaf_split_h = true;
 		*root = new_leaf;
 		return;
 	}
@@ -63,11 +80,45 @@ static void dwindle_insert(DwindleNode **root, Client *new_c, Client *focused,
 	if (!target)
 		target = dwindle_first_leaf(*root);
 
+	// ================= 保持其他窗口比例缩减逻辑 =================
+	DwindleNode *path[512];
+	float p[512];
+	int path_len = get_block_path_and_ratios(target, split_h, path, p);
+
+	int n_old = 1;
+	if (path_len > 1) {
+		n_old = count_block_items(path[path_len - 1], split_h);
+	}
+	float N = (float)(n_old + 1);
+
+	for (int i = path_len - 1; i > 0; i--) {
+		DwindleNode *S = path[i];
+		DwindleNode *child = path[i - 1];
+		float p_S = p[i];
+		float p_first = p_S * S->ratio;
+
+		if (S->first == child) {
+			float p_first_new = p_first * (N - 1.0f) / N + 1.0f / N;
+			float p_S_new = p_S * (N - 1.0f) / N + 1.0f / N;
+			S->ratio = p_first_new / p_S_new;
+		} else {
+			float p_first_new = p_first * (N - 1.0f) / N;
+			float p_S_new = p_S * (N - 1.0f) / N + 1.0f / N;
+			S->ratio = p_first_new / p_S_new;
+		}
+		if (S->ratio < 0.001f)
+			S->ratio = 0.001f;
+		if (S->ratio > 0.999f)
+			S->ratio = 0.999f;
+	}
+	// ============================================================
+
 	DwindleNode *split = calloc(1, sizeof(DwindleNode));
 	split->is_split = true;
-	split->ratio = ratio;
 	split->split_h = split_h;
 	split->split_locked = lock;
+	split->custom_leaf_split_h = target->custom_leaf_split_h;
+	new_leaf->custom_leaf_split_h = target->custom_leaf_split_h;
 
 	if (as_first) {
 		split->first = new_leaf;
@@ -76,6 +127,10 @@ static void dwindle_insert(DwindleNode **root, Client *new_c, Client *focused,
 		split->first = target;
 		split->second = new_leaf;
 	}
+
+	// 通用逻辑
+	split->ratio = ratio;
+
 	split->parent = target->parent;
 	target->parent = split;
 	new_leaf->parent = split;
@@ -102,12 +157,69 @@ static void dwindle_remove(DwindleNode **root, Client *c) {
 		return;
 	}
 
+	// 开始删除空间的比例回退逻辑
+
+	// 查找连续的同方向块路径
+	bool split_h = parent->split_h;
+	DwindleNode *path[128];
+	int path_len = 0;
+	path[path_len++] = parent;
+	DwindleNode *curr = parent->parent;
+	while (curr && curr->split_h == split_h) {
+		path[path_len++] = curr;
+		curr = curr->parent;
+	}
+
+	// 计算各祖先的旧绝对占比
+	float p[128];
+	p[path_len - 1] = 1.0f;
+	for (int i = path_len - 1; i > 0; i--) {
+		DwindleNode *S = path[i];
+		DwindleNode *child = path[i - 1];
+		if (S->first == child)
+			p[i - 1] = p[i] * S->ratio;
+		else
+			p[i - 1] = p[i] * (1.0f - S->ratio);
+	}
+
+	// 计算即将被删除的叶子节点，在该方向块中所占的绝对面积比例 (P_del)
+	float p_del =
+		p[0] * (parent->first == leaf ? parent->ratio : (1.0f - parent->ratio));
+	if (p_del > 0.999f)
+		p_del = 0.999f; // 兜底
+
+	// 重算祖先比例：将 P_del 空出来的空间，按原定比例无缝分配给其他窗口
+	for (int i = path_len - 1; i > 0; i--) {
+		DwindleNode *S = path[i];
+		DwindleNode *child = path[i - 1];
+		float p_S = p[i];
+		float p_first = p_S * S->ratio;
+
+		float denom = p_S - p_del;
+		if (denom < 0.0001f)
+			denom = 0.0001f;
+
+		if (S->first == child) {
+			S->ratio = (p_first - p_del) / denom;
+		} else {
+			S->ratio = p_first / denom;
+		}
+
+		if (S->ratio < 0.001f)
+			S->ratio = 0.001f;
+		if (S->ratio > 0.999f)
+			S->ratio = 0.999f;
+	}
+
+	// 比例重算结束
+
+	// 基础的二叉树摘除节点逻辑
 	DwindleNode *sibling =
 		(parent->first == leaf) ? parent->second : parent->first;
 	DwindleNode *grandparent = parent->parent;
+
 	sibling->parent = grandparent;
 
-	/* Preserve split direction on sibling split-nodes when requested. */
 	if (!sibling->is_split ||
 		(!config.dwindle_preserve_split && !config.dwindle_smart_split)) {
 		sibling->container_w = 0;
@@ -319,45 +431,86 @@ static void dwindle_remove_client(Client *c) {
  * dwindle_smart_split config options. */
 static void dwindle_insert_with_config(DwindleNode **root, Client *new_c,
 									   Client *focused, float ratio) {
+
+	if (!new_c || !focused)
+		return;
+
 	bool as_first = false;
 	bool split_h = false;
 	bool lock = false;
 
-	if (focused) {
-		struct wlr_box *fg = &focused->geom;
-		double fcx = fg->x + fg->width * 0.5;
-		double fcy = fg->y + fg->height * 0.5;
+	struct wlr_box *fg = &focused->geom;
+	double fcx = fg->x + fg->width * 0.5;
+	double fcy = fg->y + fg->height * 0.5;
 
-		if (config.dwindle_smart_split) {
-			double nx = (cursor->x - fcx) / (fg->width * 0.5);
-			double ny = (cursor->y - fcy) / (fg->height * 0.5);
+	if (config.dwindle_smart_split) {
+		double nx = (cursor->x - fcx) / (fg->width * 0.5);
+		double ny = (cursor->y - fcy) / (fg->height * 0.5);
 
-			if (fabs(ny) > fabs(nx)) {
-				split_h = false;	 // vertical split
-				as_first = (ny < 0); // top → new window on top
-			} else {
-				split_h = true;		 // horizontal split
-				as_first = (nx < 0); // left → new window on left
-			}
-			lock = true; // lock split direction
+		if (fabs(ny) > fabs(nx)) {
+			split_h = false;	 // vertical split
+			as_first = (ny < 0); // top → new window on top
 		} else {
-			// normal mode, auto split
-			bool likely_h = (fg->width >= fg->height);
-			if (likely_h) {
-				if (config.dwindle_hsplit == 0)
-					as_first = (cursor->x < fcx);
-				else
-					as_first = (config.dwindle_hsplit == 2);
-			} else {
-				if (config.dwindle_vsplit == 0)
-					as_first = (cursor->y < fcy);
-				else
-					as_first = (config.dwindle_vsplit == 2);
-			}
-			// split_h and lock are false, decided by width/height ratio
+			split_h = true;		 // horizontal split
+			as_first = (nx < 0); // left → new window on left
+		}
+		lock = true; // lock split direction
+	} else {
+		// normal mode, auto split
+		bool likely_h = (fg->width >= fg->height);
+		split_h = likely_h;
+
+		if (likely_h) {
+			if (config.dwindle_hsplit == 0)
+				as_first = (cursor->x < fcx);
+			else
+				as_first = (config.dwindle_hsplit == 2);
+		} else {
+			if (config.dwindle_vsplit == 0)
+				as_first = (cursor->y < fcy);
+			else
+				as_first = (config.dwindle_vsplit == 2);
 		}
 	}
 
+	DwindleNode *target = focused ? dwindle_find_leaf(*root, focused) : NULL;
+	if (!target && *root)
+		target = dwindle_first_leaf(*root);
+
+	// 当且仅当 manual_split=1 时，计算精确的 1/N 新节点比例
+	if (config.dwindle_manual_split && target) {
+		split_h = target->custom_leaf_split_h;
+		lock = true;
+		as_first = false;
+
+		// ================= 计算新节点的 1/N 比例 =================
+		DwindleNode *path[128];
+		float p[128];
+		int path_len = get_block_path_and_ratios(target, split_h, path, p);
+
+		int n_old = 1;
+		if (path_len > 1) {
+			n_old = count_block_items(path[path_len - 1], split_h);
+		}
+		float N = (float)(n_old + 1);
+
+		float p_target_old = p[0];
+		float p_split_new = p_target_old * (N - 1.0f) / N + 1.0f / N;
+
+		if (as_first) {
+			ratio = (1.0f / N) / p_split_new;
+		} else {
+			ratio = (p_target_old * (N - 1.0f) / N) / p_split_new;
+		}
+
+		if (ratio < 0.001f)
+			ratio = 0.001f;
+		if (ratio > 0.999f)
+			ratio = 0.999f;
+		// =========================================================
+	}
+
+	// 调用通用插入函数
 	dwindle_insert(root, new_c, focused, ratio, as_first, split_h, lock);
 }
 
@@ -431,3 +584,8 @@ void dwindle(Monitor *m) {
 				   m->w.width - 2 * gap_oh, m->w.height - 2 * gap_ov, gap_ih,
 				   gap_iv);
 }
+
+void cleanup_monitor_dwindle(Monitor *m) {
+	for (uint32_t t = 0; t < LENGTH(tags) + 1; t++)
+		dwindle_free_tree(m->pertag->dwindle_root[t]);
+}
\ No newline at end of file
diff --git a/src/mango.c b/src/mango.c
index f12d8e1c..8c11c318 100644
--- a/src/mango.c
+++ b/src/mango.c
@@ -317,6 +317,7 @@ struct Client {
 	struct wlr_scene_tree *scene;
 	struct wlr_scene_rect *border; /* top, bottom, left, right */
 	struct wlr_scene_rect *droparea;
+	struct wlr_scene_rect *splitindicator[4];
 	struct wlr_scene_shadow *shadow;
 	struct wlr_scene_tree *scene_surface;
 	struct wl_list link;
@@ -561,6 +562,23 @@ typedef struct {
 } SessionLock;
 
 typedef struct DwindleNode DwindleNode;
+struct DwindleNode {
+	bool is_split;
+	bool split_h;
+	bool split_locked;
+	bool custom_leaf_split_h;
+	float ratio;
+	float drag_init_ratio;
+	int32_t container_x;
+	int32_t container_y;
+	int32_t container_w;
+	int32_t container_h;
+	DwindleNode *parent;
+	DwindleNode *first;
+	DwindleNode *second;
+	Client *client;
+};
+
 struct ScrollerStackNode {
 	Client *client;
 	float scroller_proportion;
@@ -848,6 +866,7 @@ static struct ScrollerStackNode *
 scroller_node_create(struct TagScrollerState *st, Client *c);
 static void update_scroller_state(Monitor *m);
 Client *scroll_get_stack_tail_client(Client *c);
+static DwindleNode *dwindle_find_leaf(DwindleNode *node, Client *c);
 
 #include "data/static_keymap.h"
 #include "dispatch/bind_declare.h"
@@ -1212,38 +1231,47 @@ void swallow(Client *c, Client *w) {
 	client_pending_maximized_state(c, w->ismaximizescreen);
 	client_pending_minimized_state(c, w->isminimized);
 
-	/* ---------- 跨 tag 同步：dwindle 与 scroller ---------- */
-	Monitor *m;
-	wl_list_for_each(m, &mons, link) {
+	if (!w->mon)
+		return;
+
+	const Layout *layout = w->mon->pertag->ltidxs[w->mon->pertag->curtag];
+
+	if (layout->id == DWINDLE || layout->id == SCROLLER ||
+		layout->id == VERTICAL_SCROLLER) {
+
 		for (uint32_t t = 0; t < LENGTH(tags) + 1; t++) {
 			/* dwindle */
-			DwindleNode **root = &m->pertag->dwindle_root[t];
-			dwindle_remove(root, c);
-			DwindleNode *dnode = dwindle_find_leaf(*root, w);
-			if (dnode)
-				dnode->client = c;
 
-			/* scroller */
-			struct TagScrollerState *st = m->pertag->scroller_state[t];
-			if (!st)
-				continue;
+			if (layout->id == DWINDLE) {
 
-			/* 先移除 c 在任意 tag 中的旧节点 */
-			struct ScrollerStackNode *cn = find_scroller_node(st, c);
-			if (cn)
-				scroller_node_remove(st, cn);
+				DwindleNode **root = &w->mon->pertag->dwindle_root[t];
+				dwindle_remove(root, c);
+				DwindleNode *dnode = dwindle_find_leaf(*root, w);
+				if (dnode)
+					dnode->client = c;
+			}
 
-			/* 将 w 的节点（如果存在）转给 c */
-			struct ScrollerStackNode *wn = find_scroller_node(st, w);
-			if (wn)
-				wn->client = c;
+			// scroller
+			if (layout->id == SCROLLER || layout->id == VERTICAL_SCROLLER) {
+				struct TagScrollerState *st = w->mon->pertag->scroller_state[t];
+				if (!st)
+					continue;
+				/* 先移除 c 在任意 tag 中的旧节点 */
+				struct ScrollerStackNode *cn = find_scroller_node(st, c);
+				if (cn)
+					scroller_node_remove(st, cn);
+
+				/* 将 w 的节点（如果存在）转给 c */
+				struct ScrollerStackNode *wn = find_scroller_node(st, w);
+				if (wn)
+					wn->client = c;
+			}
 		}
 	}
 
 	/* 同步当前活动 tag 的全局客户端字段 */
-	if (c->mon) {
-		uint32_t curtag = c->mon->pertag->curtag;
-		sync_scroller_state_to_clients(c->mon, curtag);
+	if (layout->id == SCROLLER || layout->id == VERTICAL_SCROLLER) {
+		sync_scroller_state_to_clients(w->mon, w->mon->pertag->curtag);
 	}
 }
 
@@ -2503,9 +2531,7 @@ void cleanupmon(struct wl_listener *listener, void *data) {
 	}
 	m->wlr_output->data = NULL;
 
-	for (uint32_t t = 0; t < LENGTH(tags) + 1; t++)
-		dwindle_free_tree(m->pertag->dwindle_root[t]);
-
+	cleanup_monitor_dwindle(m);
 	cleanup_monitor_scroller(m);
 
 	free(m->pertag);
@@ -4334,6 +4360,7 @@ mapnotify(struct wl_listener *listener, void *data) {
 	/* Called when the surface is mapped, or ready to display on-screen. */
 	Client *at_client = NULL;
 	Client *c = wl_container_of(listener, c, map);
+	int32_t i = 0;
 	/* Create scene tree for this client and its border */
 	c->scene = client_surface(c)->data = wlr_scene_tree_create(layers[LyrTile]);
 	wlr_scene_node_set_enabled(&c->scene->node, c->type != XDGShell);
@@ -4386,6 +4413,15 @@ mapnotify(struct wl_listener *listener, void *data) {
 
 	// extra node
 
+	for (i = 0; i < 2; i++) {
+		c->splitindicator[i] = wlr_scene_rect_create(
+			c->scene, 0, 0,
+			c->isurgent ? config.urgentcolor : config.splitcolor);
+		c->splitindicator[i]->node.data = c;
+		wlr_scene_node_lower_to_bottom(&c->splitindicator[i]->node);
+		wlr_scene_node_set_enabled(&c->splitindicator[i]->node, false);
+	}
+
 	c->droparea = wlr_scene_rect_create(c->scene, 0, 0, config.dropcolor);
 	wlr_scene_node_lower_to_bottom(&c->droparea->node);
 	wlr_scene_node_set_position(&c->droparea->node, 0, 0);
@@ -5168,18 +5204,27 @@ exchange_common:
 		tmp2_next->prev = &c1->link;
 	}
 
-	if (config.exchange_cross_monitor && c1->mon != c2->mon) {
-		DwindleNode **c1_root = &m1->pertag->dwindle_root[m1->pertag->curtag];
-		DwindleNode *c1node = dwindle_find_leaf(*c1_root, c1);
+	const Layout *layout1 = c1->mon->pertag->ltidxs[c1->mon->pertag->curtag];
 
-		DwindleNode **c2_root = &m2->pertag->dwindle_root[m2->pertag->curtag];
-		DwindleNode *c2node = dwindle_find_leaf(*c2_root, c2);
+	const Layout *layout2 = c2->mon->pertag->ltidxs[c2->mon->pertag->curtag];
 
-		if (c1node)
-			c1node->client = c2;
+	if (c1->mon != c2->mon) {
 
-		if (c2node)
-			c2node->client = c1;
+		if (layout1->id == DWINDLE && layout2->id == DWINDLE) {
+			DwindleNode **c1_root =
+				&m1->pertag->dwindle_root[m1->pertag->curtag];
+			DwindleNode *c1node = dwindle_find_leaf(*c1_root, c1);
+
+			DwindleNode **c2_root =
+				&m2->pertag->dwindle_root[m2->pertag->curtag];
+			DwindleNode *c2node = dwindle_find_leaf(*c2_root, c2);
+
+			if (c1node)
+				c1node->client = c2;
+
+			if (c2node)
+				c2node->client = c1;
+		}
 
 		tmp_mon = c2->mon;
 		tmp_tags = c2->tags;
@@ -5191,8 +5236,7 @@ exchange_common:
 		arrange(c1->mon, false, false);
 		arrange(c2->mon, false, false);
 	} else {
-		if (c1->mon &&
-			c1->mon->pertag->ltidxs[c1->mon->pertag->curtag]->id == DWINDLE) {
+		if (layout1->id == DWINDLE && layout2->id == DWINDLE) {
 			dwindle_swap_clients(
 				&c1->mon->pertag->dwindle_root[c1->mon->pertag->curtag], c1,
 				c2);