diff --git a/src/lib/components/MarkdownRenderer.svelte b/src/lib/components/MarkdownRenderer.svelte
index b225417..35472e1 100644
--- a/src/lib/components/MarkdownRenderer.svelte
+++ b/src/lib/components/MarkdownRenderer.svelte
@@ -5,6 +5,43 @@
 	import { Fancybox } from '@fancyapps/ui/dist/index.js';
 	import '@fancyapps/ui/dist/fancybox/fancybox.css';
 
+	// 增强 highlight.js 的 bash 语法定义：补足常用运维及工程工具的主命令、子命令以及参数开关
+	const bashLang = hljs.getLanguage('bash');
+	if (bashLang && bashLang.keywords && typeof bashLang.keywords === 'object') {
+		const kw = bashLang.keywords as Record<string, string[] | undefined>;
+		// 1. 添加主命令（显示为内建或核心命令样式）
+		if (Array.isArray(kw.built_in)) {
+			kw.built_in.push(
+				'docker', 'podman', 'openstack', 'kubectl', 'kubeadm', 'helm',
+				'systemctl', 'journalctl', 'firewalld', 'iptables', 'crictl', 'nerdctl',
+				'ansible', 'terraform', 'vagrant', 'wrangler', 'pnpm', 'npm', 'gitea',
+				'curl', 'wget', 'git', 'cargo', 'bun'
+			);
+		}
+		// 2. 添加操作动作与资源类子命令（显示为字面或特色参数样式）
+		const customSubcommands = [
+			'run', 'exec', 'ps', 'build', 'image', 'images', 'container', 'pull', 'push',
+			'apply', 'get', 'describe', 'delete', 'logs', 'create', 'edit', 'rollout',
+			'scale', 'port-forward', 'cluster-info', 'server', 'flavor', 'volume',
+			'network', 'subnet', 'router', 'keypair', 'floating', 'list', 'show',
+			'start', 'stop', 'restart', 'status', 'enable', 'disable', 'daemon-reload',
+			'clone', 'commit', 'checkout', 'branch', 'merge', 'rebase', 'fetch',
+			'install', 'add', 'remove', 'dev', 'deploy', 'attach', 'rmi', 'rm'
+		];
+		if (Array.isArray(kw.literal)) {
+			kw.literal.push(...customSubcommands);
+		} else {
+			kw.literal = customSubcommands;
+		}
+		// 3. 匹配 -d, --name, -p 等选项开关（限定必须位于空格或行首后面，避免误伤中间带破折号的普通名称）
+		if (Array.isArray(bashLang.contains)) {
+			bashLang.contains.unshift({
+				className: 'attr',
+				begin: /(?<=\s|^)-+[a-zA-Z0-9_-]+/
+			});
+		}
+	}
+
 	let { content = '' } = $props<{ content: string }>();
 	
 	let container: HTMLElement;
@@ -15,7 +52,24 @@
 		renderer: {
 			code(token) {
 				const code = token.text;
-				const rawLang = (token.lang || '').trim().toLowerCase().split(' ')[0];
+				let rawLang = (token.lang || '').trim().toLowerCase().split(' ')[0];
+				// 对常见的习惯表达法强制收向 bash 处理
+				const bashAliases: Record<string, string> = {
+					k8s: 'bash',
+					kubectl: 'bash',
+					openstack: 'bash',
+					podman: 'bash',
+					systemd: 'bash',
+					systemctl: 'bash',
+					console: 'bash',
+					terminal: 'bash',
+					zsh: 'bash',
+					sh: 'bash'
+				};
+				if (bashAliases[rawLang]) {
+					rawLang = bashAliases[rawLang];
+				}
+
 				let highlighted: string;
 				let language = 'plaintext';