diff --git a/bbr.sh b/bbr.sh
index 553083b..7772ec3 100644
--- a/bbr.sh
+++ b/bbr.sh
@@ -1,202 +1,196 @@
 #!/bin/bash
-# VPS 网络极限优化脚本 - 自动检测配置，发挥最大速度
-# https://github.com/xmg0828888/tcp-bbr
+# BBR Blast Smooth v2 - 自动识别系统/内存智能调优版
+# 支持 Debian 11/12/13, Ubuntu 20.04/22.04/24.04
+# 根据内存大小自动调整缓冲区参数 🚀
 
-RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[0;33m'; CYAN='\033[0;36m'; NC='\033[0m'
-[ "$(id -u)" != "0" ] && echo -e "${RED}请使用 root 运行${NC}" && exit 1
+set -e
 
-CORES=$(nproc)
-MEM_MB=$(free -m | awk '/Mem:/{print $2}')
-MEM_BYTES=$((MEM_MB * 1024 * 1024))
-IFACE=$(ip route | awk '/default/{print $5}' | head -1)
+# 颜色输出
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m'
 
-show_info() {
-    echo -e "${CYAN}╔══════════════════════════════════╗${NC}"
-    echo -e "${CYAN}║   VPS 网络极限优化脚本 v1.0      ║${NC}"
-    echo -e "${CYAN}╚══════════════════════════════════╝${NC}"
-    echo -e "CPU: ${YELLOW}${CORES} 核${NC}  内存: ${YELLOW}${MEM_MB}MB${NC}  内核: ${YELLOW}$(uname -r)${NC}"
-    echo -e "网卡: ${YELLOW}${IFACE}${NC}"
-    local algo=$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)
-    local qdisc=$(sysctl -n net.core.default_qdisc 2>/dev/null)
-    echo -e "拥塞算法: ${YELLOW}${algo}${NC}  队列: ${YELLOW}${qdisc}${NC}"
-    if [ "$algo" = "bbr" ]; then
-        echo -e "BBR: ${GREEN}✓ 已开启${NC}"
+echo -e "${BLUE}========================================${NC}"
+echo -e "${BLUE}   BBR Blast Smooth v2 智能调优版${NC}"
+echo -e "${BLUE}========================================${NC}"
+echo ""
+
+# 检测系统
+detect_os() {
+    if [ -f /etc/os-release ]; then
+        . /etc/os-release
+        OS=$ID
+        VER=$VERSION_ID
     else
-        echo -e "BBR: ${RED}✗ 未开启${NC}"
+        echo -e "${RED}❌ 无法识别系统${NC}"
+        exit 1
     fi
-    echo ""
-}
-
-# 根据内存自动计算缓冲区大小
-calc_buffers() {
-    if [ $MEM_MB -le 512 ]; then
-        RMEM_MAX=8388608; WMEM_MAX=8388608; NETDEV_BUDGET=300
-        TCP_MEM="65536 131072 262144"; TCP_RMEM="4096 87380 4194304"; TCP_WMEM="4096 65536 4194304"
-        BACKLOG=1000; SOMAXCONN=1024; CONNTRACK=16384
-    elif [ $MEM_MB -le 2048 ]; then
-        RMEM_MAX=16777216; WMEM_MAX=16777216; NETDEV_BUDGET=600
-        TCP_MEM="131072 262144 524288"; TCP_RMEM="4096 87380 8388608"; TCP_WMEM="4096 65536 8388608"
-        BACKLOG=2000; SOMAXCONN=2048; CONNTRACK=65536
-    elif [ $MEM_MB -le 8192 ]; then
-        RMEM_MAX=33554432; WMEM_MAX=33554432; NETDEV_BUDGET=1200
-        TCP_MEM="262144 524288 1048576"; TCP_RMEM="4096 87380 16777216"; TCP_WMEM="4096 65536 16777216"
-        BACKLOG=5000; SOMAXCONN=4096; CONNTRACK=131072
-    else
-        RMEM_MAX=67108864; WMEM_MAX=67108864; NETDEV_BUDGET=2400
-        TCP_MEM="524288 1048576 2097152"; TCP_RMEM="4096 87380 33554432"; TCP_WMEM="4096 65536 33554432"
-        BACKLOG=10000; SOMAXCONN=8192; CONNTRACK=262144
-    fi
-    FILE_MAX=$((MEM_MB * 256))
-    [ $FILE_MAX -lt 65535 ] && FILE_MAX=65535
-}
-
-do_optimize() {
-    calc_buffers
-    echo -e "${GREEN}正在优化... (${MEM_MB}MB 内存方案)${NC}"
-
-    local CONF="/etc/sysctl.d/99-network-optimize.conf"
-    cat > "$CONF" << EOF
-# === BBR 拥塞控制 ===
-net.core.default_qdisc = fq
-net.ipv4.tcp_congestion_control = bbr
-
-# === 缓冲区 (基于 ${MEM_MB}MB 内存) ===
-net.core.rmem_max = ${RMEM_MAX}
-net.core.wmem_max = ${WMEM_MAX}
-net.core.rmem_default = 262144
-net.core.wmem_default = 262144
-net.ipv4.tcp_rmem = ${TCP_RMEM}
-net.ipv4.tcp_wmem = ${TCP_WMEM}
-net.ipv4.tcp_mem = ${TCP_MEM}
-net.ipv4.udp_mem = ${TCP_MEM}
-
-# === 连接队列 ===
-net.core.netdev_max_backlog = ${BACKLOG}
-net.core.somaxconn = ${SOMAXCONN}
-net.ipv4.tcp_max_syn_backlog = ${SOMAXCONN}
-
-# === TCP 快速回收 ===
-net.ipv4.tcp_tw_reuse = 1
-net.ipv4.tcp_fin_timeout = 15
-net.ipv4.tcp_keepalive_time = 300
-net.ipv4.tcp_keepalive_intvl = 30
-net.ipv4.tcp_keepalive_probes = 5
-net.ipv4.tcp_max_tw_buckets = 65535
-net.ipv4.tcp_max_orphans = 32768
-
-# === TCP 性能 ===
-net.ipv4.tcp_fastopen = 3
-net.ipv4.tcp_mtu_probing = 1
-net.ipv4.tcp_slow_start_after_idle = 0
-net.ipv4.tcp_no_metrics_save = 1
-net.ipv4.tcp_window_scaling = 1
-net.ipv4.tcp_sack = 1
-net.ipv4.tcp_timestamps = 1
-net.ipv4.tcp_ecn = 0
-net.ipv4.tcp_syncookies = 1
-net.ipv4.tcp_adv_win_scale = 2
-net.core.netdev_budget = ${NETDEV_BUDGET}
-net.core.netdev_budget_usecs = 8000
-
-# === 文件描述符 ===
-fs.file-max = ${FILE_MAX}
-fs.nr_open = ${FILE_MAX}
-
-# === 连接跟踪 ===
-net.netfilter.nf_conntrack_max = ${CONNTRACK}
-
-# === 其他 ===
-net.ipv4.ip_local_port_range = 1024 65535
-net.ipv4.ip_forward = 1
-net.ipv6.conf.all.forwarding = 1
-EOF
-
-    sysctl --system >/dev/null 2>&1
-
-    # 设置文件描述符限制
-    if ! grep -q "# network-optimize" /etc/security/limits.conf 2>/dev/null; then
-        cat >> /etc/security/limits.conf << EOF
-# network-optimize
-* soft nofile ${FILE_MAX}
-* hard nofile ${FILE_MAX}
-root soft nofile ${FILE_MAX}
-root hard nofile ${FILE_MAX}
-EOF
-    fi
-
-    # 网卡队列优化
-    if command -v ethtool &>/dev/null && [ -n "$IFACE" ]; then
-        ethtool -G "$IFACE" rx 4096 tx 4096 2>/dev/null
-        ethtool -K "$IFACE" tso on gso on gro on 2>/dev/null
-    fi
-
-    echo -e "${GREEN}✓ 优化完成！${NC}"
-    echo ""
-    show_result
-}
-
-show_result() {
-    echo -e "${CYAN}=== 优化结果 ===${NC}"
-    echo ""
-    echo -e "${GREEN}[ BBR 加速 ]${NC}"
-    echo -e "  拥塞算法: $(sysctl -n net.ipv4.tcp_congestion_control)"
-    echo -e "  队列调度: $(sysctl -n net.core.default_qdisc)"
-    echo ""
-    echo -e "${GREEN}[ TCP 调优 ]${NC}"
-    echo -e "  FastOpen:    $(sysctl -n net.ipv4.tcp_fastopen)"
-    echo -e "  MTU探测:     $(sysctl -n net.ipv4.tcp_mtu_probing)"
-    echo -e "  窗口缩放:   $(sysctl -n net.ipv4.tcp_window_scaling)"
-    echo -e "  SACK:        $(sysctl -n net.ipv4.tcp_sack)"
-    echo -e "  Timestamps:  $(sysctl -n net.ipv4.tcp_timestamps)"
-    echo -e "  tw_reuse:    $(sysctl -n net.ipv4.tcp_tw_reuse)"
-    echo -e "  fin_timeout: $(sysctl -n net.ipv4.tcp_fin_timeout)s"
-    echo -e "  keepalive:   $(sysctl -n net.ipv4.tcp_keepalive_time)s"
-    echo -e "  慢启动:     $(sysctl -n net.ipv4.tcp_slow_start_after_idle) (0=关闭)"
-    echo ""
-    echo -e "${GREEN}[ 缓冲区 ]${NC}"
-    echo -e "  rmem_max:  $(( $(sysctl -n net.core.rmem_max) /1024/1024 ))MB"
-    echo -e "  wmem_max:  $(( $(sysctl -n net.core.wmem_max) /1024/1024 ))MB"
-    echo -e "  tcp_rmem:  $(sysctl -n net.ipv4.tcp_rmem)"
-    echo -e "  tcp_wmem:  $(sysctl -n net.ipv4.tcp_wmem)"
-    echo ""
-    echo -e "${GREEN}[ 连接 ]${NC}"
-    echo -e "  backlog:     $(sysctl -n net.core.netdev_max_backlog)"
-    echo -e "  somaxconn:   $(sysctl -n net.core.somaxconn)"
-    echo -e "  端口范围:   $(sysctl -n net.ipv4.ip_local_port_range)"
-    echo -e "  文件描述符: $(sysctl -n fs.file-max)"
-    echo ""
-    echo -e "${YELLOW}✓ 重启后永久生效，无需额外操作${NC}"
-}
-
-do_restore() {
-    echo -e "${YELLOW}正在恢复默认...${NC}"
-    rm -f /etc/sysctl.d/99-network-optimize.conf
-    sysctl --system >/dev/null 2>&1
-    echo -e "${GREEN}✓ 已恢复默认配置${NC}"
-}
-
-show_menu() {
-    clear
-    show_info
-    echo "1. 一键优化 (BBR + 内核参数 + 缓冲区)"
-    echo "2. 查看当前状态"
-    echo "3. 恢复默认配置"
-    echo "0. 退出"
-    echo ""
-    read -p "请选择 [0-3]: " choice
-    case "$choice" in
-        1) do_optimize ;;
-        2) show_result ;;
-        3) do_restore ;;
-        0) exit 0 ;;
-        *) echo -e "${RED}无效选择${NC}" ;;
+    
+    case "$OS" in
+        debian)
+            if [[ "$VER" =~ ^(11|12|13)$ ]]; then
+                echo -e "${GREEN}✓ 检测到 Debian $VER${NC}"
+            else
+                echo -e "${RED}❌ 仅支持 Debian 11/12/13${NC}"
+                exit 1
+            fi
+            ;;
+        ubuntu)
+            if [[ "$VER" =~ ^(20.04|22.04|24.04)$ ]]; then
+                echo -e "${GREEN}✓ 检测到 Ubuntu $VER${NC}"
+            else
+                echo -e "${RED}❌ 仅支持 Ubuntu 20.04/22.04/24.04${NC}"
+                exit 1
+            fi
+            ;;
+        *)
+            echo -e "${RED}❌ 不支持的系统: $OS${NC}"
+            exit 1
+            ;;
     esac
-    echo ""; read -p "按回车继续..." && show_menu
 }
 
-case "${1:-}" in
-    restore|disable) do_restore ;;
-    status) show_info; show_result ;;
-    menu) show_menu ;;
-    *) show_info; do_optimize ;;
-esac
+# 检测内存并设置参数
+detect_memory() {
+    # 获取总内存 (MB)
+    TOTAL_MEM=$(free -m | awk '/^Mem:/{print $2}')
+    echo -e "${GREEN}✓ 检测到内存: ${TOTAL_MEM}MB${NC}"
+
+    # 缓冲区 = 内存的 1/8，最小 8MB，最大 256MB
+    BUF_MB=$(( TOTAL_MEM / 8 ))
+    [ "$BUF_MB" -lt 8 ]   && BUF_MB=8
+    [ "$BUF_MB" -gt 256 ] && BUF_MB=256
+    BUF_BYTES=$(( BUF_MB * 1024 * 1024 ))
+
+    if [ "$TOTAL_MEM" -lt 512 ]; then
+        PROFILE="micro"
+        echo -e "${YELLOW}→ 使用 Micro 配置 (极小内存优化)${NC}"
+    elif [ "$TOTAL_MEM" -lt 1024 ]; then
+        PROFILE="small"
+        echo -e "${YELLOW}→ 使用 Small 配置 (小内存优化)${NC}"
+    elif [ "$TOTAL_MEM" -lt 2048 ]; then
+        PROFILE="medium"
+        echo -e "${YELLOW}→ 使用 Medium 配置 (中等内存)${NC}"
+    elif [ "$TOTAL_MEM" -lt 4096 ]; then
+        PROFILE="large"
+        echo -e "${YELLOW}→ 使用 Large 配置 (大内存)${NC}"
+    else
+        PROFILE="xlarge"
+        echo -e "${YELLOW}→ 使用 XLarge 配置 (超大内存)${NC}"
+    fi
+
+    RMEM_MAX=$BUF_BYTES
+    WMEM_MAX=$BUF_BYTES
+    TCP_RMEM="4096 87380 $BUF_BYTES"
+    TCP_WMEM="4096 65536 $BUF_BYTES"
+    echo -e "${YELLOW}→ 缓冲区: ${BUF_MB}MB${NC}"
+}
+
+# 启用 BBR
+enable_bbr() {
+    echo ""
+    echo -e "${BLUE}==> 启用 BBR${NC}"
+    modprobe tcp_bbr 2>/dev/null || true
+    echo "tcp_bbr" > /etc/modules-load.d/bbr.conf
+    echo -e "${GREEN}✓ BBR 模块已加载${NC}"
+}
+
+# 备份原配置
+backup_config() {
+    if [ -f /etc/sysctl.conf ]; then
+        cp /etc/sysctl.conf /etc/sysctl.conf.bak.$(date +%Y%m%d%H%M%S)
+        echo -e "${GREEN}✓ 已备份原配置${NC}"
+    fi
+}
+
+# 写入优化参数
+apply_config() {
+    echo ""
+    echo -e "${BLUE}==> 写入优化参数 (Profile: $PROFILE)${NC}"
+    
+    # 移除旧的 BBR 配置
+    sed -i '/# === BBR Blast Smooth/,/# === END BBR/d' /etc/sysctl.conf 2>/dev/null || true
+    
+    cat >> /etc/sysctl.conf <<SYSCTL
+
+# === BBR Blast Smooth v2 (Profile: $PROFILE) ===
+# 系统: $OS $VER | 内存: ${TOTAL_MEM}MB | 缓冲: ${BUF_MB}MB
+# 生成时间: $(date '+%Y-%m-%d %H:%M:%S')
+
+# BBR 拥塞控制
+net.core.default_qdisc=fq
+net.ipv4.tcp_congestion_control=bbr
+
+# 缓冲区 (内存/8 自动计算)
+net.core.rmem_max=$RMEM_MAX
+net.core.wmem_max=$WMEM_MAX
+net.ipv4.tcp_rmem=$TCP_RMEM
+net.ipv4.tcp_wmem=$TCP_WMEM
+
+# 短连接 & 延迟优化
+net.ipv4.tcp_fin_timeout=8
+net.ipv4.tcp_tw_reuse=1
+net.ipv4.tcp_window_scaling=1
+net.ipv4.tcp_timestamps=1
+net.ipv4.tcp_sack=1
+
+# 避免保存历史 RTT，保持突发灵活
+net.ipv4.tcp_no_metrics_save=1
+# === END BBR ===
+SYSCTL
+
+    echo -e "${GREEN}✓ 配置已写入${NC}"
+}
+
+# 应用配置
+reload_config() {
+    echo ""
+    echo -e "${BLUE}==> 应用配置${NC}"
+    sysctl -p >/dev/null 2>&1
+    echo -e "${GREEN}✓ 配置已生效${NC}"
+}
+
+# 验证结果
+verify() {
+    echo ""
+    echo -e "${BLUE}==> 验证配置${NC}"
+    
+    CC=$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)
+    QDISC=$(sysctl -n net.core.default_qdisc 2>/dev/null)
+    
+    if [ "$CC" = "bbr" ] && [ "$QDISC" = "fq" ]; then
+        echo -e "${GREEN}✓ 拥塞控制: $CC${NC}"
+        echo -e "${GREEN}✓ 队列算法: $QDISC${NC}"
+    else
+        echo -e "${RED}⚠ 配置可能未完全生效，建议重启${NC}"
+    fi
+}
+
+# 显示摘要
+summary() {
+    echo ""
+    echo -e "${BLUE}========================================${NC}"
+    echo -e "${GREEN}✅ BBR Blast Smooth v2 配置完成！${NC}"
+    echo -e "${BLUE}========================================${NC}"
+    echo -e "系统: $OS $VER"
+    echo -e "内存: ${TOTAL_MEM}MB"
+    echo -e "配置: $PROFILE"
+    echo -e "缓冲: $(($RMEM_MAX/1024/1024))MB"
+    echo ""
+}
+
+# 主流程
+main() {
+    detect_os
+    detect_memory
+    enable_bbr
+    backup_config
+    apply_config
+    reload_config
+    verify
+    summary
+}
+
+main