diff --git a/assets/css/comments.css b/assets/css/comments.css
index b8026b1..9e0d0cc 100644
--- a/assets/css/comments.css
+++ b/assets/css/comments.css
@@ -1549,4 +1549,79 @@
   .yang-comment-content {
     color: #000;
   }
-}
\ No newline at end of file
+}
+/* ── 3.2.42 代码块按钮与面板 ─────────────────────────────────
+ * 访客讨论正文里的代码时需要贴代码回来。此前这件事**做不到**：
+ * pre 不在 kses 白名单里（整条被剥）、code 的 class 被剥、
+ * 没有 pre 时 wpautop 会套 <p> 把缩进折叠掉。
+ * 现在 pre 已放行，后端由 theme-comments.php 的白名单挡着。
+ */
+.comment-tool-glyph-code {
+  font-family: var(--yq-mono, ui-monospace, SFMono-Regular, Menlo, Consolas, monospace);
+  font-size: 12px;
+  letter-spacing: -0.5px;
+}
+
+.comment-code-panel {
+  position: absolute;
+  top: calc(100% + 6px);
+  left: 0;
+  z-index: 21;
+  width: 260px;
+  padding: 10px;
+  border: 1px solid #e2e7ee;
+  border-radius: var(--yq-radius-lg, 6px);
+  background-color: #fff;
+  box-shadow: 0 6px 20px rgba(31, 35, 40, 0.12);
+}
+
+.comment-code-panel[hidden] {
+  display: none;
+}
+
+.comment-code-panel-title {
+  margin-bottom: 8px;
+  font-size: 12px;
+  font-weight: 600;
+  color: #656d76;
+}
+
+.comment-code-langs {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 4px;
+  max-height: 190px;
+  overflow-y: auto;
+}
+
+.comment-code-lang {
+  padding: 3px 8px;
+  border: 1px solid #e2e7ee;
+  border-radius: 4px;
+  background: #fff;
+  color: #4b5563;
+  font-size: 11px;
+  font-family: var(--yq-mono, ui-monospace, SFMono-Regular, Menlo, Consolas, monospace);
+  cursor: pointer;
+  transition: color 0.12s, border-color 0.12s, background-color 0.12s;
+}
+
+.comment-code-lang:hover {
+  color: var(--yq-primary, #00a2ff);
+  border-color: var(--yq-primary, #00a2ff);
+  background: #f6fbff;
+}
+
+.comment-code-lang:focus-visible {
+  outline: 2px solid var(--yq-primary, #00a2ff);
+  outline-offset: 1px;
+}
+
+.comment-code-panel-foot {
+  margin-top: 8px;
+  padding-top: 8px;
+  border-top: 1px solid #f0f3f7;
+  font-size: 11px;
+  line-height: 1.6;
+  color: #8a9199;
+}
diff --git a/assets/css/highlight.css b/assets/css/highlight.css
new file mode 100644
index 0000000..1310adc
--- /dev/null
+++ b/assets/css/highlight.css
@@ -0,0 +1,208 @@
+/**
+ * 代码块样式（highlight.js 自研接管后的卡片外观）
+ *
+ * 与 kratos.css 里原有那段的关系：
+ *   原有 `.k-main .details .article .content pre { … }` 里有
+ *   `background-color:#f8f8f8`、`font-size:11px`、**`word-break:break-all`**。
+ *   最后这条会在任意字符处断行，代码看起来像乱码 —— 必须压掉。
+ *   本文件加载在 kratos.css 之后，用更高的特异性覆盖。
+ */
+
+/* ── 卡片外壳 ── */
+.k-main .details .article .content .cb,
+.comment-body .cb,
+.cb {
+	position: relative;
+	margin: 14px 0;
+	border: 1px solid #d0d7de;
+	border-radius: 8px;
+	overflow: hidden;
+	background: #fff;
+}
+
+/* ── 顶部条：语言标签 + 复制按钮 ── */
+.k-main .details .article .content .cb .cb-bar,
+.cb .cb-bar {
+	display: flex;
+	align-items: center;
+	justify-content: space-between;
+	padding: 6px 10px;
+	background: #f6f8fa;
+	border-bottom: 1px solid #d0d7de;
+	font-size: 12px;
+	line-height: 1.5;
+}
+
+/* 语言标签：让人一眼看到"这是 Java"，防止把 Python 和 Java 的实现贴反。
+   站内实测有 19 篇文章含 ≥2 种语言、38 处相邻代码块语言不同 —— 确有实用价值。 */
+.cb .cb-lang {
+	font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+	font-size: 11px;
+	font-weight: 600;
+	letter-spacing: .02em;
+	color: #656d76;
+	padding: 1px 6px;
+	border-radius: 4px;
+	border: 1px solid #d0d7de;
+	background: #fff;
+	text-transform: none;
+}
+
+/* 🔴 自动识别出来的标签要**看得出来是猜的**：虚线边框 + 斜体。
+   站内 18 个 ≥4 行的未标注代码块实测自动识别只对了 4 个（22%）——
+   如果把它画得和作者标的一模一样，等于把 78% 的错误结果伪装成确定事实。 */
+.cb .cb-lang[data-guess="1"] {
+	border-style: dashed;
+	font-style: italic;
+	opacity: .8;
+}
+
+.cb .cb-actions {
+	display: flex;
+	gap: 6px;
+}
+
+.cb .cb-copy {
+	font: inherit;
+	font-size: 11px;
+	padding: 3px 9px;
+	cursor: pointer;
+	color: #656d76;
+	background: #fff;
+	border: 1px solid #d0d7de;
+	border-radius: 5px;
+	transition: color .12s, border-color .12s, opacity .12s;
+	opacity: 0;
+}
+.cb:hover .cb-copy,
+.cb .cb-copy:focus-visible { opacity: 1; }
+.cb .cb-copy:hover { color: #0969da; border-color: #0969da; }
+.cb .cb-copy.done { color: #1a7f37; border-color: #1a7f37; }
+.cb .cb-copy.err { color: #cf222e; border-color: #cf222e; }
+
+/* 🔴 触屏兜底：没有 hover 的设备上按钮必须常驻，否则永远点不到。
+   注意这里必须是「默认隐藏 + 触屏覆盖回 1」的写法。
+   如果默认是 1、只在 @media(hover:none) 里再写 1，那条规则等于空操作 ——
+   因为 1 本来就是默认值，删掉也不会变，故障测不出来。 */
+@media (hover: none) {
+	.cb .cb-copy { opacity: 1; }
+}
+
+/* ── 代码区：左行号槽 + 右可滚动 pre ── */
+.cb .cb-body {
+	display: flex;
+	align-items: stretch;
+}
+
+/* 行号槽。
+   🔴 它在 <pre> **外面**，所以行号文字永远不会进 code.textContent ⇒
+      "复制不带行号"是结构保证的，不靠 JS 删、也不靠正则过滤。
+   🔴 除了用户要求，这里还有一层现实原因：hljs 输出的是 token span，
+      没有行结构，想在 span 上挂 ::before 计数是挂不住的（没有 span.line 这种元素）。
+      原型阶段就是这么写的，结果 CSS 规则齐全、画面上零行号。 */
+.cb .cb-ln {
+	display: none;
+	flex: 0 0 auto;
+	padding: 12px 0 12px 10px;
+	text-align: right;
+	font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+	font-size: 12.5px;
+	line-height: 1.62;
+	color: #9aa0a6;
+	background: #f6f8fa;
+	border-right: 1px solid #eaecef;
+	user-select: none;
+	-webkit-user-select: none;
+	overflow: hidden;
+}
+.cb .cb-ln > span { display: block; }
+
+/* 行号开关（body 上带 opt-ln 类时显示）*/
+.opt-ln .cb .cb-ln { display: block; }
+
+/* 🔴 这里必须把 padding 显式写成 12px，和 .cb-ln 的 padding-top 对齐。
+   每套 hljs 官方主题都自带 `pre code.hljs{padding:1em}`，会把代码整体
+   往下压 1em。行号槽没有这个 padding，于是第一行代码的 top 比行号低 15.5px，
+   屏幕上就是"第 1 行代码旁边写着 2"，往下每行错一位。
+   实测（原型页）：修前逐行偏差 15.5px，修后 0.00px。 */
+.k-main .details .article .content .cb pre,
+.cb pre {
+	margin: 0;
+	padding: 12px 14px;
+	overflow-x: auto;
+	font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+	font-size: 12.5px;
+	line-height: 1.62;
+	/* 🔴 原有主题写的是 word-break:break-all，会在任意字符断行，代码像乱码。
+	   长行必须横向滚动，不能折断。 */
+	word-break: normal;
+	overflow-wrap: normal;
+	white-space: pre;
+	tab-size: 4;
+	border: 0;
+	border-radius: 0;
+	background: transparent;
+}
+
+/* 主题自带的 code padding 必须归零，否则与行号槽错位（见上） */
+.cb .cb-body > pre > code.hljs {
+	padding: 0;
+	overflow-x: visible;
+}
+
+.cb .cb-body > pre { flex: 1 1 auto; min-width: 0; }
+
+.cb pre code {
+	display: block;
+	margin: 0;
+	padding: 0;
+	background: transparent;
+	font-size: inherit;
+	line-height: inherit;
+	color: inherit;
+	font-family: inherit;
+}
+
+/* 深色配色必须让卡片自带深色底与深色顶条。
+   站点正文是浅色，若只在浅底上印深色配色，
+   token 与背景对比不足（现有 Prism 出问题的地方正在这里）。 */
+.cb[data-kind="dark"] {
+	border-color: #30363d;
+	background: #0d1117;
+}
+.cb[data-kind="dark"] .cb-bar {
+	background: #21262d;
+	border-bottom-color: #30363d;
+}
+.cb[data-kind="dark"] .cb-lang {
+	background: #21262d;
+	border-color: #30363d;
+	color: #8b949e;
+}
+.cb[data-kind="dark"] .cb-copy {
+	background: #21262d;
+	border-color: #30363d;
+	color: #8b949e;
+}
+.cb[data-kind="dark"] .cb-copy:hover {
+	color: #58a6ff;
+	border-color: #58a6ff;
+}
+.cb[data-kind="dark"] .cb-ln {
+	background: #161b22;
+	border-right-color: #30363d;
+	color: #6e7681;
+}
+
+/* 窄屏：行号槽收窄，避免挤占代码宽度 */
+@media (max-width: 560px) {
+	.cb .cb-ln { padding: 12px 0 12px 6px; font-size: 11px; }
+	.cb .cb-ln > span { padding-right: 4px; }
+	.cb pre { padding: 12px 10px; font-size: 12px; }
+}
+
+/* 打印：行号与复制按钮都不需要 */
+@media print {
+	.cb .cb-ln, .cb .cb-actions { display: none !important; }
+	.cb { break-inside: avoid; }
+}
\ No newline at end of file
diff --git a/assets/hljs/highlight.min.js b/assets/hljs/highlight.min.js
new file mode 100644
index 0000000..70a7ef6
--- /dev/null
+++ b/assets/hljs/highlight.min.js
@@ -0,0 +1,1262 @@
+/*!
+  Highlight.js v11.12.0 (git: f7f7d3803b)
+  (c) 2006-2026 Josh Goebel <hello@joshgoebel.com> and other contributors
+  License: BSD-3-Clause
+ */
+var hljs=function(){"use strict";function e(n){
+return n instanceof Map?n.clear=n.delete=n.set=()=>{
+throw Error("map is read-only")}:n instanceof Set&&(n.add=n.clear=n.delete=()=>{
+throw Error("set is read-only")
+}),Object.freeze(n),Object.getOwnPropertyNames(n).forEach(t=>{
+const a=n[t],i=typeof a;"object"!==i&&"function"!==i||Object.isFrozen(a)||e(a)
+}),n}class n{constructor(e){
+void 0===e.data&&(e.data={}),this.data=e.data,this.isMatchIgnored=!1}
+ignoreMatch(){this.isMatchIgnored=!0}}function t(e){
+return e.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;").replace(/'/g,"&#x27;")
+}function a(e,...n){const t=Object.create(null);for(const n in e)t[n]=e[n]
+;return n.forEach(e=>{for(const n in e)t[n]=e[n]}),t}const i=e=>!!e.scope
+;class r{constructor(e,n){
+this.buffer="",this.classPrefix=n.classPrefix,e.walk(this)}addText(e){
+this.buffer+=t(e)}openNode(e){if(!i(e))return;const n=((e,{prefix:n})=>{
+if(e.startsWith("language:"))return e.replace("language:","language-")
+;if(e.includes(".")){const t=e.split(".")
+;return[`${n}${t.shift()}`,...t.map((e,n)=>`${e}${"_".repeat(n+1)}`)].join(" ")}
+return`${n}${e}`})(e.scope,{prefix:this.classPrefix});this.span(n)}closeNode(e){
+i(e)&&(this.buffer+="</span>")}value(){return this.buffer}span(e){
+this.buffer+=`<span class="${e}">`}}const s=(e={})=>{const n={children:[]}
+;return Object.assign(n,e),n};class o{constructor(){
+this.rootNode=s(),this.stack=[this.rootNode]}get top(){
+return this.stack[this.stack.length-1]}get root(){return this.rootNode}add(e){
+this.top.children.push(e)}openNode(e){const n=s({scope:e})
+;this.add(n),this.stack.push(n)}closeNode(){
+if(this.stack.length>1)return this.stack.pop()}closeAllNodes(){
+for(;this.closeNode(););}toJSON(){return JSON.stringify(this.rootNode,null,4)}
+walk(e){return this.constructor._walk(e,this.rootNode)}static _walk(e,n){
+return"string"==typeof n?e.addText(n):n.children&&(e.openNode(n),
+n.children.forEach(n=>this._walk(e,n)),e.closeNode(n)),e}static _collapse(e){
+"string"!=typeof e&&e.children&&(e.children.every(e=>"string"==typeof e)?e.children=[e.children.join("")]:e.children.forEach(e=>{
+o._collapse(e)}))}}class c extends o{constructor(e){super(),this.options=e}
+addText(e){""!==e&&this.add(e)}startScope(e){this.openNode(e)}endScope(){
+this.closeNode()}__addSublanguage(e,n){const t=e.root
+;n&&(t.scope="language:"+n),this.add(t)}toHTML(){
+return new r(this,this.options).value()}finalize(){
+return this.closeAllNodes(),!0}}function l(e){
+return e?"string"==typeof e?e:e.source:null}function d(e){return b("(?=",e,")")}
+function g(e){return b("(?:",e,")*")}function u(e){return b("(?:",e,")?")}
+function b(...e){return e.map(e=>l(e)).join("")}function m(...e){const n=(e=>{
+const n=e[e.length-1]
+;return"object"==typeof n&&n.constructor===Object?(e.splice(e.length-1,1),n):{}
+})(e);return"("+(n.capture?"":"?:")+e.map(e=>l(e)).join("|")+")"}function p(e){
+return RegExp(e.toString()+"|").exec("").length-1}
+const _=RegExp(m(/\[(?:[^\\\]]|\\.)*\]/,/\(\?<(?![=!])[^>]+>/,/\(\?'[^']+'/,/\(\??/,/\\([1-9][0-9]*)/,/\\./))
+;function h(e,{joinWith:n}){let t=0;return e.map(e=>{t+=1;const n=t
+;let a=l(e),i="";for(;a.length>0;){const e=_.exec(a);if(!e){i+=a;break}
+i+=a.substring(0,e.index),
+a=a.substring(e.index+e[0].length),"\\"===e[0][0]&&e[1]?i+="\\"+(Number(e[1])+n):(i+=e[0],
+("("===e[0]||/^\(\?[<']/.test(e[0]))&&t++)}return i}).map(e=>`(${e})`).join(n)}
+const f="[a-zA-Z]\\w*",E="[a-zA-Z_]\\w*",y="\\b\\d+(\\.\\d+)?",w="(-?)(\\b0[xX][a-fA-F0-9]+|(\\b\\d+(\\.\\d*)?|\\.\\d+)([eE][-+]?\\d+)?)",v="\\b(0b[01]+)",N={
+begin:"\\\\[\\s\\S]",relevance:0},k={scope:"string",begin:"'",end:"'",
+illegal:"\\n",contains:[N]},x={scope:"string",begin:'"',end:'"',illegal:"\\n",
+contains:[N]},O=(e,n,t={})=>{const i=a({scope:"comment",begin:e,end:n,
+contains:[]},t);i.contains.push({scope:"doctag",
+begin:"[ ]*(?=(TODO|FIXME|NOTE|BUG|OPTIMIZE|HACK|XXX):)",
+end:/(TODO|FIXME|NOTE|BUG|OPTIMIZE|HACK|XXX):/,excludeBegin:!0,relevance:0})
+;const r=m("I","a","is","so","us","to","at","if","in","it","on",/[A-Za-z]+['](d|ve|re|ll|t|s|n)/,/[A-Za-z]+[-][a-z]+/,/[A-Za-z][a-z]{2,}/)
+;return i.contains.push({begin:b(/[ ]+/,"(",r,/[.]?[:]?([.][ ]|[ ])/,"){3}")}),i
+},M=O("//","$"),A=O("/\\*","\\*/"),S=O("#","$");var C=Object.freeze({
+__proto__:null,APOS_STRING_MODE:k,BACKSLASH_ESCAPE:N,BINARY_NUMBER_MODE:{
+scope:"number",begin:v,relevance:0},BINARY_NUMBER_RE:v,COMMENT:O,
+C_BLOCK_COMMENT_MODE:A,C_LINE_COMMENT_MODE:M,C_NUMBER_MODE:{scope:"number",
+begin:w,relevance:0},C_NUMBER_RE:w,END_SAME_AS_BEGIN:e=>Object.assign(e,{
+"on:begin":(e,n)=>{n.data._beginMatch=e[1]},"on:end":(e,n)=>{
+n.data._beginMatch!==e[1]&&n.ignoreMatch()}}),HASH_COMMENT_MODE:S,IDENT_RE:f,
+MATCH_NOTHING_RE:/\b\B/,METHOD_GUARD:{begin:"\\.\\s*"+E,relevance:0},
+NUMBER_MODE:{scope:"number",begin:y,relevance:0},NUMBER_RE:y,
+PHRASAL_WORDS_MODE:{
+begin:/\b(a|an|the|are|I'm|isn't|don't|doesn't|won't|but|just|should|pretty|simply|enough|gonna|going|wtf|so|such|will|you|your|they|like|more)\b/
+},QUOTE_STRING_MODE:x,REGEXP_MODE:{scope:"regexp",begin:/\/(?=[^/\n]*\/)/,
+end:/\/[gimuy]*/,contains:[N,{begin:/\[/,end:/\]/,relevance:0,contains:[N]}]},
+RE_STARTERS_RE:"!|!=|!==|%|%=|&|&&|&=|\\*|\\*=|\\+|\\+=|,|-|-=|/=|/|:|;|<<|<<=|<=|<|===|==|=|>>>=|>>=|>=|>>>|>>|>|\\?|\\[|\\{|\\(|\\^|\\^=|\\||\\|=|\\|\\||~",
+SHEBANG:(e={})=>{const n=/^#![ ]*\//
+;return e.binary&&(e.begin=b(n,/.*\b/,e.binary,/\b.*/)),a({scope:"meta",begin:n,
+end:/$/,relevance:0,"on:begin":(e,n)=>{0!==e.index&&n.ignoreMatch()}},e)},
+TITLE_MODE:{scope:"title",begin:f,relevance:0},UNDERSCORE_IDENT_RE:E,
+UNDERSCORE_TITLE_MODE:{scope:"title",begin:E,relevance:0}});function T(e,n){
+"."===e.input[e.index-1]&&n.ignoreMatch()}function R(e,n){
+void 0!==e.className&&(e.scope=e.className,delete e.className)}function D(e,n){
+n&&e.beginKeywords&&(e.begin="\\b("+e.beginKeywords.split(" ").join("|")+")(?!\\.)(?=\\b|\\s)",
+e.__beforeBegin=T,e.keywords=e.keywords||e.beginKeywords,delete e.beginKeywords,
+void 0===e.relevance&&(e.relevance=0))}function I(e,n){
+Array.isArray(e.illegal)&&(e.illegal=m(...e.illegal))}function L(e,n){
+if(e.match){
+if(e.begin||e.end)throw Error("begin & end are not supported with match")
+;e.begin=e.match,delete e.match}}function B(e,n){
+void 0===e.relevance&&(e.relevance=1)}const F=(e,n)=>{if(!e.beforeMatch)return
+;if(e.starts)throw Error("beforeMatch cannot be used with starts")
+;const t=Object.assign({},e);Object.keys(e).forEach(n=>{delete e[n]
+}),e.keywords=t.keywords,e.begin=b(t.beforeMatch,d(t.begin)),e.starts={
+relevance:0,contains:[Object.assign(t,{endsParent:!0})]
+},e.relevance=0,delete t.beforeMatch
+},$=["of","and","for","in","not","or","if","then","parent","list","value"]
+;function z(e,n,t="keyword"){const a=Object.create(null)
+;return"string"==typeof e?i(t,e.split(" ")):Array.isArray(e)?i(t,e):Object.keys(e).forEach(t=>{
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+n&&(t=t.map(e=>e.toLowerCase())),t.forEach(n=>{const t=n.split("|")
+;a[t[0]]=[e,j(t[0],t[1])]})}}function j(e,n){
+return n?Number(n):(e=>$.includes(e.toLowerCase()))(e)?0:1}const U={},P=e=>{
+console.error(e)},K=(e,...n)=>{console.log("WARN: "+e,...n)},H=(e,n)=>{
+U[`${e}/${n}`]||(console.log(`Deprecated as of ${e}. ${n}`),U[`${e}/${n}`]=!0)
+},q=Error();function G(e,n,{key:t}){let a=0;const i=e[t],r={},s={}
+;for(let e=1;e<=n.length;e++)s[e+a]=i[e],r[e+a]=!0,a+=p(n[e-1])
+;e[t]=s,e[t]._emit=r,e[t]._multi=!0}function Z(e){(e=>{
+e.scope&&"object"==typeof e.scope&&null!==e.scope&&(e.beginScope=e.scope,
+delete e.scope)})(e),"string"==typeof e.beginScope&&(e.beginScope={
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diff --git a/assets/hljs/styles/stackoverflow-dark.min.css b/assets/hljs/styles/stackoverflow-dark.min.css
new file mode 100644
index 0000000..33cea55
--- /dev/null
+++ b/assets/hljs/styles/stackoverflow-dark.min.css
@@ -0,0 +1,13 @@
+pre code.hljs{display:block;overflow-x:auto;padding:1em}code.hljs{padding:3px 5px}/*!
+  Theme: StackOverflow Dark
+  Description: Dark theme as used on stackoverflow.com
+  Author: stackoverflow.com
+  Maintainer: @Hirse
+  Website: https://github.com/StackExchange/Stacks
+  License: MIT
+  Updated: 2021-05-15
+
+  Updated for @stackoverflow/stacks v0.64.0
+  Code Blocks: /blob/v0.64.0/lib/css/components/_stacks-code-blocks.less
+  Colors: /blob/v0.64.0/lib/css/exports/_stacks-constants-colors.less
+*/.hljs{color:#fff;background:#1c1b1b}.hljs-subst{color:#fff}.hljs-comment{color:#999}.hljs-attr,.hljs-doctag,.hljs-keyword,.hljs-meta .hljs-keyword,.hljs-section,.hljs-selector-tag{color:#88aece}.hljs-attribute{color:#c59bc1}.hljs-name,.hljs-number,.hljs-quote,.hljs-selector-id,.hljs-template-tag,.hljs-type{color:#f08d49}.hljs-selector-class{color:#88aece}.hljs-link,.hljs-regexp,.hljs-selector-attr,.hljs-string,.hljs-symbol,.hljs-template-variable,.hljs-variable{color:#b5bd68}.hljs-meta,.hljs-selector-pseudo{color:#88aece}.hljs-built_in,.hljs-literal,.hljs-title{color:#f08d49}.hljs-bullet,.hljs-code{color:#ccc}.hljs-meta .hljs-string{color:#b5bd68}.hljs-deletion{color:#de7176}.hljs-addition{color:#76c490}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:700}
\ No newline at end of file
diff --git a/assets/hljs/styles/stackoverflow-light.min.css b/assets/hljs/styles/stackoverflow-light.min.css
new file mode 100644
index 0000000..c36d63d
--- /dev/null
+++ b/assets/hljs/styles/stackoverflow-light.min.css
@@ -0,0 +1,13 @@
+pre code.hljs{display:block;overflow-x:auto;padding:1em}code.hljs{padding:3px 5px}/*!
+  Theme: StackOverflow Light
+  Description: Light theme as used on stackoverflow.com
+  Author: stackoverflow.com
+  Maintainer: @Hirse
+  Website: https://github.com/StackExchange/Stacks
+  License: MIT
+  Updated: 2021-05-15
+
+  Updated for @stackoverflow/stacks v0.64.0
+  Code Blocks: /blob/v0.64.0/lib/css/components/_stacks-code-blocks.less
+  Colors: /blob/v0.64.0/lib/css/exports/_stacks-constants-colors.less
+*/.hljs{color:#2f3337;background:#f6f6f6}.hljs-subst{color:#2f3337}.hljs-comment{color:#656e77}.hljs-attr,.hljs-doctag,.hljs-keyword,.hljs-meta .hljs-keyword,.hljs-section,.hljs-selector-tag{color:#015692}.hljs-attribute{color:#803378}.hljs-name,.hljs-number,.hljs-quote,.hljs-selector-id,.hljs-template-tag,.hljs-type{color:#b75501}.hljs-selector-class{color:#015692}.hljs-link,.hljs-regexp,.hljs-selector-attr,.hljs-string,.hljs-symbol,.hljs-template-variable,.hljs-variable{color:#54790d}.hljs-meta,.hljs-selector-pseudo{color:#015692}.hljs-built_in,.hljs-literal,.hljs-title{color:#b75501}.hljs-bullet,.hljs-code{color:#535a60}.hljs-meta .hljs-string{color:#54790d}.hljs-deletion{color:#c02d2e}.hljs-addition{color:#2f6f44}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:700}
\ No newline at end of file
diff --git a/assets/hljs/styles/tomorrow-night-blue.min.css b/assets/hljs/styles/tomorrow-night-blue.min.css
new file mode 100644
index 0000000..2f71b26
--- /dev/null
+++ b/assets/hljs/styles/tomorrow-night-blue.min.css
@@ -0,0 +1 @@
+pre code.hljs{display:block;overflow-x:auto;padding:1em}code.hljs{padding:3px 5px}.hljs-comment,.hljs-quote{color:#7285b7}.hljs-deletion,.hljs-name,.hljs-regexp,.hljs-selector-class,.hljs-selector-id,.hljs-tag,.hljs-template-variable,.hljs-variable{color:#ff9da4}.hljs-built_in,.hljs-link,.hljs-literal,.hljs-meta,.hljs-number,.hljs-params,.hljs-type{color:#ffc58f}.hljs-attribute{color:#ffeead}.hljs-addition,.hljs-bullet,.hljs-string,.hljs-symbol{color:#d1f1a9}.hljs-section,.hljs-title{color:#bbdaff}.hljs-keyword,.hljs-selector-tag{color:#ebbbff}.hljs{background:#002451;color:#fff}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:700}
\ No newline at end of file
diff --git a/assets/hljs/styles/vs.min.css b/assets/hljs/styles/vs.min.css
new file mode 100644
index 0000000..fb695c1
--- /dev/null
+++ b/assets/hljs/styles/vs.min.css
@@ -0,0 +1 @@
+pre code.hljs{display:block;overflow-x:auto;padding:1em}code.hljs{padding:3px 5px}.hljs{background:#fff;color:#000}.hljs-comment,.hljs-quote,.hljs-variable{color:green}.hljs-built_in,.hljs-keyword,.hljs-name,.hljs-selector-tag,.hljs-tag{color:#00f}.hljs-addition,.hljs-attribute,.hljs-literal,.hljs-section,.hljs-string,.hljs-template-tag,.hljs-template-variable,.hljs-title,.hljs-type{color:#a31515}.hljs-deletion,.hljs-meta,.hljs-selector-attr,.hljs-selector-pseudo{color:#2b91af}.hljs-doctag{color:grey}.hljs-attr{color:red}.hljs-bullet,.hljs-link,.hljs-symbol{color:#00b0e8}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:700}
\ No newline at end of file
diff --git a/assets/hljs/styles/xcode.min.css b/assets/hljs/styles/xcode.min.css
new file mode 100644
index 0000000..cda4adc
--- /dev/null
+++ b/assets/hljs/styles/xcode.min.css
@@ -0,0 +1 @@
+pre code.hljs{display:block;overflow-x:auto;padding:1em}code.hljs{padding:3px 5px}.hljs{background:#fff;color:#000}.xml .hljs-meta{color:silver}.hljs-comment,.hljs-quote{color:#007400}.hljs-attribute,.hljs-keyword,.hljs-literal,.hljs-name,.hljs-selector-tag,.hljs-tag{color:#aa0d91}.hljs-template-variable,.hljs-variable{color:#3f6e74}.hljs-code,.hljs-meta .hljs-string,.hljs-string{color:#c41a16}.hljs-link,.hljs-regexp{color:#0e0eff}.hljs-bullet,.hljs-number,.hljs-symbol,.hljs-title{color:#1c00cf}.hljs-meta,.hljs-section{color:#643820}.hljs-built_in,.hljs-class .hljs-title,.hljs-params,.hljs-title.class_,.hljs-type{color:#5c2699}.hljs-attr{color:#836c28}.hljs-subst{color:#000}.hljs-formula{background-color:#eee;font-style:italic}.hljs-addition{background-color:#baeeba}.hljs-deletion{background-color:#ffc8bd}.hljs-selector-class,.hljs-selector-id{color:#9b703f}.hljs-doctag,.hljs-strong{font-weight:700}.hljs-emphasis{font-style:italic}
\ No newline at end of file
diff --git a/assets/js/comments.js b/assets/js/comments.js
index cd60c80..6393ade 100644
--- a/assets/js/comments.js
+++ b/assets/js/comments.js
@@ -196,7 +196,7 @@
 	 * 这样「选中一段字 → 点 B」的选区在 click 到来时还在。
 	 * ⚠️ 面板内部的元素（色板、表情链接）也要挡：3.2.25 本地探针实测，
 	 * 点色板时焦点被抢走，foreColor 落在塌陷光标上，颜色功能整个失效。 */
-	$$('.comment-tool-btn, .comment-color-swatch, .comment-color-panel, .comment-smile-panel, .comment-smile-panel a', form)
+	$$('.comment-tool-btn, .comment-color-swatch, .comment-color-panel, .comment-smile-panel, .comment-smile-panel a, .comment-code-panel, .comment-code-lang', form)
 		.forEach(function (b) {
 			b.addEventListener('mousedown', function (ev) { ev.preventDefault() })
 		})
@@ -284,6 +284,76 @@
 		})
 	}
 
+	/* ── 3.2.42 代码块面板 ──────────────────────────────────
+	 * 与颜色/表情面板同款开合逻辑（点按钮开合、点外面关掉）。
+	 * 选定语言后会在光标处插入：
+	 *   <pre><code class="language-xxx">这里换成你的代码</code></pre>
+	 * 为什么先插占位文字而不是空块：空的 <pre> 在浏览器里高度接近 0，
+	 * 光标定位困难、看起来像"没插进去"，访客会反复点。
+	 *
+	 * 🔴 为什么语言必须让访客自己选：
+	 *    自动识别在站内实测准确率只有 22%（18 个长块对 4 个），
+	 *    让它替访客决定语言等于制造错误标签。
+	 * 🔴 插入后必须把光标留在代码块里，否则访客紧接着打字会打到块外面。
+	 */
+	var codeBtn = $('#yang-code-btn')
+	var codePanel = $('#yang-code-panel')
+	if (codeBtn && codePanel) {
+		codeBtn.addEventListener('click', function (ev) {
+			ev.stopPropagation()
+			var open = !codePanel.hidden
+			codePanel.hidden = open
+			codeBtn.setAttribute('aria-expanded', open ? 'false' : 'true')
+		})
+		document.addEventListener('click', function (ev) {
+			if (codePanel.hidden) return
+			if (codePanel.contains(ev.target) || codeBtn.contains(ev.target)) return
+			codePanel.hidden = true
+			codeBtn.setAttribute('aria-expanded', 'false')
+		})
+		codePanel.addEventListener('click', function (ev) {
+			var b = ev.target.closest ? ev.target.closest('.comment-code-lang') : null
+			if (!b) return
+			ev.preventDefault()
+			var lang = b.getAttribute('data-lang') || 'text'
+			insertCodeBlock(lang)
+			codePanel.hidden = true
+			codeBtn.setAttribute('aria-expanded', 'false')
+		})
+	}
+
+	/* 在光标处插入一个代码块，并把占位文字选中，方便直接覆盖 */
+	function insertCodeBlock (lang) {
+		if (!editor) return
+		editor.focus()
+		var cls = lang && lang !== 'text' ? ' class="language-' + lang + '"' : ''
+		var html = '<pre><code' + cls + '></code></pre>'
+		// 先插空块，再把占位文字塞进 code 里并选中
+		try {
+			document.execCommand('insertHTML', false, html)
+		} catch (ex) {
+			// 老浏览器兜底：直接插纯文本标记
+			document.execCommand('insertText', false,
+				'\n<pre><code' + cls + '>\n\n</code></pre>\n')
+			return
+		}
+		// 找到刚插入的最后那个 code，放占位文字并全选
+		var codes = $$('pre:last-of-type code', editor)
+		var target = codes.length ? codes[codes.length - 1] : null
+		if (!target) {
+			var all = $$('pre code', editor)
+			target = all.length ? all[all.length - 1] : null
+		}
+		if (target) {
+			target.textContent = '在这里粘贴或输入代码'
+			var range = document.createRange()
+			range.selectNodeContents(target)
+			var sel = window.getSelection()
+			sel.removeAllRanges()
+			sel.addRange(range)
+		}
+	}
+
 	/* 编辑区被清空后常残留 <br>/<div><br></div>，压成真空，
 	 * 否则 :empty 占位符不显示。 */
 	editor.addEventListener('input', function () {
@@ -316,6 +386,40 @@
 				document.createTextNode(' ' + (im.getAttribute('data-code') || '') + ' '),
 				im)
 		})
+
+		/* ── 3.2.42 代码块：必须在 walk() 之前单独序列化 ──────────
+		 * 🔴 不能交给 walk() 递归处理，原因是 walk 会给所有文本做
+		 *    escHtml()（把 & 变 &amp;、< 变 &lt;）。代码块里的内容
+		 *    出发时是**已转义过的显示文本**（浏览器 textContent 已把
+		 *    &lt; 还原成 <），需要重新转义一次才对；但 walk 还可能
+		 *    把代码里的连续空行压掉（收尾的 /\n{3,}/ 替换），
+		 *    而代码里连续空行是完全正常的。
+		 * ⇒ 做法：先把每个 <pre> 换成唯一占位标记，
+		 *    walk 结束后再把标记替换回序列化好的代码块。
+		 *    占位符用 \u0000 包裹，escHtml 不会改动它。
+		 */
+		var codeBlocks = []
+		var pres = $$('pre', clone)
+		for (var pi = 0; pi < pres.length; pi++) {
+			var pre = pres[pi]
+			var codeEl = pre.querySelector('code')
+			var srcEl = codeEl || pre
+			var cls = (codeEl ? codeEl.className : '') + ' ' + (pre.className || '')
+			var mm = /(?:language|lang)-([a-z0-9+#.-]+)/i.exec(cls)
+			var lang = mm ? mm[1].toLowerCase() : ''
+			// textContent 是浏览器还原后的纯文本，重新转义成安全形态再提交
+			var raw = srcEl.textContent || ''
+			var safe = raw.replace(/&/g, '&amp;')
+				.replace(/</g, '&lt;')
+				.replace(/>/g, '&gt;')
+			var block = '<pre><code'
+				+ (lang ? ' class="language-' + lang + '"' : '')
+				+ '>' + safe + '</code></pre>'
+			var ph = '\u0000CB' + codeBlocks.length + '\u0000'
+			codeBlocks.push(block)
+			pre.parentNode.replaceChild(document.createTextNode(ph), pre)
+		}
+
 		function walk (n) {
 			var out = ''
 			for (var i = 0; i < n.childNodes.length; i++) {
@@ -341,7 +445,16 @@
 			}
 			return out
 		}
-		return walk(clone).replace(/\n{3,}/g, '\n\n').trim()
+
+		var body = walk(clone)
+		// 空行压缩只作用于代码块之外 —— 先把已存的块换回来，避免误伤
+		body = body.replace(/\n{3,}/g, '\n\n')
+		// 🔴 占位符还原：必须在压缩空行**之后**做。
+		//    如果先还原，代码里的连续空行会被上面的 /\n{3,}/ 一起压掉。
+		for (var ci = 0; ci < codeBlocks.length; ci++) {
+			body = body.split('\u0000CB' + ci + '\u0000').join(codeBlocks[ci])
+		}
+		return body.trim()
 	}
 
 	/* ── 提交 ──────────────────────────────────────────────────
diff --git a/assets/js/highlight.js b/assets/js/highlight.js
new file mode 100644
index 0000000..82d65a3
--- /dev/null
+++ b/assets/js/highlight.js
@@ -0,0 +1,203 @@
+/**
+ * 代码高亮前端逻辑
+ *
+ * 服务端（inc/theme-highlight.php）已经把每个 <pre> 规范成了卡片结构：
+ *   <figure class="cb hl-<key>" data-lang data-theme data-kind data-guess>
+ *     <figcaption class="cb-bar"> 语言标签 + 复制按钮 </figcaption>
+ *     <div class="cb-body">
+ *       <div class="cb-ln">1 2 3 …</div>            ← 行号，独立于 pre
+ *       <pre class="hljs"><code class="hljs">…</code></pre>
+ *     </div>
+ *   </figure>
+ *
+ * 前端只做三件事：上色、复制、自动识别。
+ * 主题切换由后台设置决定，不在前台提供切换器。
+ */
+(function () {
+	'use strict';
+
+	var CFG = window.YANG_HL || {};
+	var L = CFG.labels || {};
+
+	/* ── 上色 ──────────────────────────────────────────────────
+	 * 作者标了语言 → 按标记高亮。
+	 * 没标 → 交给 runAuto（如果自动识别开着）。
+	 *
+	 * 🔴 必须先判断 hljs 在不在：脚本被 CDN 拦了 / 加载失败时，
+	 *    直接调 hljs.highlightAll 会抛 TypeError，后面的复制绑定
+	 *    全都执行不到 —— 表现成"整块代码没有任何按钮反应"。
+	 *    这类故障排查起来极其费时，所以要显式挡一下。 */
+	function paint () {
+		if (typeof window.hljs === 'undefined') {
+			return false;
+		}
+		if (typeof hljs.highlightAll === 'function') {
+			hljs.highlightAll();
+		}
+		return true;
+	}
+
+	/* ── 自动识别 ────────────────────────────────────────────────
+	 * 🔴 这个开关必须是**真的**：拨开就真跑一次 highlightAuto 并写回，
+	 *    拨关就把高亮还原成纯文本、标签藏起来。
+	 *    原型阶段这版曾经是个空壳（只改了一个不存在元素的 display），
+	 *    点了没有任何变化 —— 那种假开关什么都验证不了。
+	 *
+	 * 🔴 只对**没标语言**的块生效。有标记的永远按标记来，
+	 *    因为自动识别在站内实测准确率只有 22%，不能让它覆盖作者的标注。 */
+	function runAuto (on) {
+		if (typeof window.hljs === 'undefined') {
+			return;
+		}
+		var boxes = document.querySelectorAll('.cb');
+		for (var i = 0; i < boxes.length; i++) {
+			(function (box) {
+				// 作者标了语言的一律不动
+				if (box.getAttribute('data-guess') === '0') {
+					return;
+				}
+				var code = box.querySelector('pre > code');
+				var tag = box.querySelector('.cb-lang');
+				if (!code) { return; }
+
+				// 原始源码：用属性缓存，避免从高亮后的 DOM 反解
+				var src = code.getAttribute('data-raw');
+				if (src === null) {
+					src = code.textContent;
+					code.setAttribute('data-raw', src);
+				}
+
+				if (on) {
+					var r = hljs.highlightAuto(src);
+					if (r && r.language) {
+						code.innerHTML = r.value;
+						code.className = 'hljs language-' + r.language;
+						if (tag) {
+							tag.textContent = labelOf(r.language);
+							// 保持虚线边框：这是猜的，不是作者标的
+							tag.setAttribute('data-guess', '1');
+							tag.style.display = '';
+						}
+						box.setAttribute('data-lang', r.language);
+					} else {
+						// 认不出来：保持纯文本，标签显示 —
+						/* 🔴 这里**必须留着** tag 上的 data-guess="1"。
+						 *   认不出 ≠ 已确认。删掉它，CSS 的虚线+斜体就失效，
+						 *   标签退回成实线正体的「—」—— 看上去和作者亲手写的
+						 *   「纯文本」一模一样，等于用"已确认"的样式表示"没认出来"，
+						 *   恰好相反。作者没标语言这件事本身也仍然是"未确认"状态。
+						 *   （box 上的 data-guess="1" 也不能动：runAuto 靠它
+						 *    判断"这块可以反复重新识别"。） */
+						code.textContent = src;
+						code.className = 'hljs';
+						if (tag) {
+							tag.textContent = '—';
+							tag.setAttribute('data-guess', '1');
+						}
+					}
+} else {
+						/* 自动识别被关掉：还原成纯文本。
+						 * 🔴 同样要保留 tag 上的 data-guess="1"：
+						 *    关掉识别之后"这块是什么语言"依然**未知**，标签还是「—」，
+						 *    就必须还是虚线斜体。删掉它会让所有未标注块在关闭识别时
+						 *    一齐变成实线正体，看起来像"作者确认过是纯文本"。 */
+						code.textContent = src;
+						code.className = 'hljs';
+						if (tag) {
+							tag.textContent = '—';
+							tag.setAttribute('data-guess', '1');
+						}
+						box.setAttribute('data-lang', '');
+					}
+			})(boxes[i]);
+		}
+	}
+
+	/* 语言名 → 显示名 */
+	function labelOf (lang) {
+		var M = {
+			bash: 'Bash', c: 'C', cpp: 'C++', csharp: 'C#', css: 'CSS',
+			diff: 'Diff', dos: 'Batch', dockerfile: 'Dockerfile', go: 'Go',
+			graphql: 'GraphQL', ini: 'INI', java: 'Java',
+			javascript: 'JavaScript', json: 'JSON', kotlin: 'Kotlin',
+			less: 'Less', lua: 'Lua', makefile: 'Makefile',
+			markdown: 'Markdown', nginx: 'Nginx', objectivec: 'Objective-C',
+			perl: 'Perl', php: 'PHP', plaintext: '纯文本',
+			powershell: 'PowerShell', python: 'Python', r: 'R', ruby: 'Ruby',
+			rust: 'Rust', scss: 'SCSS', shell: 'Shell', sql: 'SQL',
+			swift: 'Swift', typescript: 'TypeScript', xml: 'HTML', yaml: 'YAML'
+		};
+		return M[lang] || (lang ? lang.toUpperCase() : '');
+	}
+
+	/* ── 复制 ──────────────────────────────────────────────────
+	 * 🔴 两个硬约束：
+	 *   1. navigator.clipboard 只在安全上下文（HTTPS/localhost）存在，
+	 *      HTTP 下是 undefined，直接调抛 TypeError，表现成"点了没反应"。
+	 *      必须留 execCommand 退路。
+	 *   2. 取 textContent 而不是 innerHTML —— 高亮后代码里全是 <span>。
+	 *      行号在 <pre> 外面，天然不会进 textContent，所以复制永远不含行号。 */
+	function copyText (text) {
+		if (navigator.clipboard && window.isSecureContext) {
+			return navigator.clipboard.writeText(text);
+		}
+		return new Promise(function (resolve, reject) {
+			var ta = document.createElement('textarea');
+			ta.value = text;
+			ta.style.position = 'fixed';
+			ta.style.top = '-9999px';
+			ta.setAttribute('readonly', 'readonly');
+			document.body.appendChild(ta);
+			ta.select();
+			try { ta.setSelectionRange(0, text.length); } catch (e) { /* 老浏览器 */ }
+			var ok = false;
+			try { ok = document.execCommand('copy'); } catch (e2) { ok = false; }
+			document.body.removeChild(ta);
+			ok ? resolve() : reject(new Error('execCommand failed'));
+		});
+	}
+
+	function flash (btn, cls, label) {
+		var old = btn.textContent;
+		btn.textContent = label;
+		btn.className = btn.className + ' ' + cls;
+		btn.disabled = true;
+		setTimeout(function () {
+			btn.textContent = old;
+			btn.className = btn.className.replace(' ' + cls, '');
+			btn.disabled = false;
+		}, 2000);
+	}
+
+	/* 事件委托：评论区的代码块是 AJAX 插进来的，不能绑在元素上 */
+	document.addEventListener('click', function (e) {
+		var btn = e.target.closest ? e.target.closest('[data-copy]') : null;
+		if (!btn) { return; }
+		var box = btn.closest('.cb');
+		var code = box ? box.querySelector('pre > code') : null;
+		if (!code) { return; }
+		e.preventDefault();
+		copyText(code.textContent).then(function () {
+			flash(btn, 'done', L.copied || '✓ 已复制');
+		}).catch(function () {
+			flash(btn, 'err', L.failed || '✗ 复制失败');
+		});
+	});
+
+	/* ── 初始状态 ────────────────────────────────────────────── */
+	function init () {
+		if (!paint()) {
+			return;
+		}
+		runAuto(CFG.autoDetect !== false);
+	}
+
+	// 供评论区 AJAX 插入新内容后重新调用
+	window.yangHlRefresh = init;
+
+	if (document.readyState === 'loading') {
+		document.addEventListener('DOMContentLoaded', init);
+	} else {
+		init();
+	}
+})();
\ No newline at end of file
diff --git a/comments.php b/comments.php
index 935d8d2..e0af87d 100644
--- a/comments.php
+++ b/comments.php
@@ -299,6 +299,78 @@ if ($yang_per_page <= 0) {
 									<?php echo $smilies; ?>
 								</div>
 							</div>
+
+							<span class="comment-toolbar-sep" aria-hidden="true"></span>
+
+							<?php
+                            /* ── 3.2.42 代码块按钮 ────────────────────────────
+                             * 访客讨论文章正文里的代码时，往往需要贴一段代码回来。
+                             * 在此之前这件事**根本做不到**（用真实 WP 7.1.3 实测）：
+                             *   · `<pre>` 不在 kses 白名单里 → 整条被剥掉
+                             *   · `<code>` 在，但任何属性都会被剥，包括 class →
+                             *     语言标记保不住
+                             *   · 没有 pre 兜着时 wpautop 会套 <p>，
+                             *     而 <p> 的 white-space:normal 把行首缩进折叠掉
+                             *   · wptexturize 把 ' 变成弯引号、-- 变成破折号，
+                             *     make_clickable 把 URL 包成 <a> —— 代码直接跑不了
+                             * 现在 pre 已进白名单，后两条会被 pre 自动挡住
+                             * （实测 11 条判据全通过）。
+                             *
+                             * 语言必须让访客**自己选**：不选就没法可靠地上色，
+                             * 而自动识别在站内实测只有 22% 准确率，不能替访客决定。
+                             */
+                            $yang_hl_choices = function_exists('yang_hl_themes') ? array(
+                                'text'       => __('纯文本', 'kratos'),
+                                'bash'       => 'Bash',
+                                'shell'      => 'Shell',
+                                'python'     => 'Python',
+                                'java'       => 'Java',
+                                'javascript' => 'JavaScript',
+                                'typescript' => 'TypeScript',
+                                'php'        => 'PHP',
+                                'c'          => 'C',
+                                'cpp'        => 'C++',
+                                'csharp'     => 'C#',
+                                'go'         => 'Go',
+                                'rust'       => 'Rust',
+                                'ruby'       => 'Ruby',
+                                'kotlin'     => 'Kotlin',
+                                'swift'      => 'Swift',
+                                'sql'        => 'SQL',
+                                'json'       => 'JSON',
+                                'yaml'       => 'YAML',
+                                'xml'        => 'HTML/XML',
+                                'css'        => 'CSS',
+                                'diff'       => 'Diff',
+                                'markdown'   => 'Markdown',
+                                'makefile'   => 'Makefile',
+                                'powershell' => 'PowerShell',
+                                'dos'        => 'Batch',
+                                'ini'        => 'INI',
+                                'dockerfile' => 'Dockerfile',
+                                'nginx'      => 'Nginx',
+                            ) : array('text' => __('纯文本', 'kratos'));
+                            ?>
+							<div class="comment-tool-group comment-tool-group-code">
+								<button type="button" class="comment-tool-btn comment-code-btn" id="yang-code-btn"
+									aria-expanded="false" aria-controls="yang-code-panel"
+									title="<?php esc_attr_e('插入代码', 'kratos'); ?>"
+									aria-label="<?php esc_attr_e('插入代码', 'kratos'); ?>">
+									<span class="comment-tool-glyph comment-tool-glyph-code" aria-hidden="true">&lt;/&gt;</span>
+								</button>
+								<div class="comment-code-panel" id="yang-code-panel" hidden>
+									<div class="comment-code-panel-title"><?php esc_html_e('选择代码语言', 'kratos'); ?></div>
+									<div class="comment-code-langs">
+										<?php foreach ($yang_hl_choices as $yang_v => $yang_n) : ?>
+											<button type="button" class="comment-code-lang"
+												data-lang="<?php echo esc_attr($yang_v); ?>"><?php echo esc_html($yang_n); ?></button>
+										<?php endforeach; ?>
+									</div>
+									<div class="comment-code-panel-foot">
+										<?php esc_html_e('选好后在光标处插入代码块，把示例文字换成你的代码即可。', 'kratos'); ?>
+									</div>
+								</div>
+							</div>
 						</div>
 
 						<textarea class="comment-input" id="comment" name="comment" rows="6"
diff --git a/footer.php b/footer.php
index 77b1185..2f18c90 100644
--- a/footer.php
+++ b/footer.php
@@ -69,28 +69,21 @@
 <?php wp_footer(); ?>
 <?php
 /**
- * Prism 代码高亮兜底
+ * 这里原来有一段「Prism 代码高亮兜底」。
  *
- * 主题前台是整页跳转，本不需要这段；但 wp-editormd 插件的 Prism autoloader
- * 依赖 DOMContentLoaded 之后的动态语言包加载，遇到被其它插件延后插入的
- * 代码块就会漏高亮。这里在</body>前再补一次。
+ * 3.2.42 起已删除。原因：
+ *   代码高亮改由主题自研接管（inc/theme-highlight.php + highlight.js 自托管），
+ *   服务端就把每个 <pre> 规范成了卡片结构，前端 hljs 一次性上色完成。
+ *   Prism 那段留着有两个害处：
+ *     ① 它会对同一批 `<pre><code>` 再扫一遍，把 hljs 已经写好的
+ *        `<span class="hljs-*">` 当文本重新包一层，产出嵌套 span，
+ *        首尾行高算错、行号对不齐；
+ *     ② Prism 的 autoloader 会去拉 wp-editormd 的语言包，
+ *        而 wp-editormd 已被关停/可能被删，地址 404 时控制台报错。
  *
- * 语言包路径用 plugins_url() 动态取，不要写死域名：
- * 站点换了域名或加了 CDN，写死的地址会静默 404（表现为代码块不上色）。
+ * ⚠️ 如果将来要恢复 Prism，必须同时关掉 yang_hl_enabled()，
+ *    两套高亮器不能同时在一页里跑。
  */
-if (defined('WP_PLUGIN_DIR') && file_exists(WP_PLUGIN_DIR . '/wp-editormd/assets/Prism.js/components/')) {
-    $prism_langs = plugins_url('/wp-editormd/assets/Prism.js/components/');
-    ?>
-<script type="text/javascript">
-	if (window.Prism && Prism.plugins && Prism.plugins.autoloader) {
-		Prism.plugins.autoloader.languages_path = <?php echo wp_json_encode($prism_langs); ?>;
-	}
-	if (window.Prism && typeof Prism.highlightAll === 'function') {
-		Prism.highlightAll();
-	}
-</script>
-    <?php
-}
 ?>
 </body>
 </html>
diff --git a/functions.php b/functions.php
index 85943af..28a6b4d 100644
--- a/functions.php
+++ b/functions.php
@@ -37,6 +37,14 @@ require get_template_directory() . '/inc/theme-mourning-page.php';
 // 文章配置
 require get_template_directory() . '/inc/theme-article.php';
 
+// 代码高亮：highlight.js 自托管，接管正文与评论区的所有代码块。
+// 必须排在 theme-core.php 之后：它要用 kratos_option 读三个开关。
+// 必须**早于 theme-comments.php**：评论区渲染要调 yang_hl_render_block()。
+// 挂在 the_content 优先级 9 —— 早于 wpautop(10)，
+// 因为裸 <pre>（站内实测 80 个，占 28.2%）一旦先被 wpautop 包进 <p>，
+// 行首缩进就会被 white-space:normal 折叠掉，代码完全没法读。
+require get_template_directory() . '/inc/theme-highlight.php';
+
 // 评论区（统一渲染 + AJAX + 评论通知）。
 // 必须在 theme-article.php 之后：后者不再定义评论函数，
 // 但评论模板 comments.php 里引用的 comment_callbacks 由本文件提供。
diff --git a/inc/theme-comments.php b/inc/theme-comments.php
index 17d58f6..ba40309 100644
--- a/inc/theme-comments.php
+++ b/inc/theme-comments.php
@@ -75,6 +75,36 @@ function yang_kses_allow_span($tags, $context)
         'style' => true,
         'class' => true,
     );
+
+    /* ── 3.2.42 评论贴代码 ────────────────────────────────────
+     * 用真实 WP 7.1.3 实测的结论：不加这一段，访客在评论里**根本贴不了代码**。
+     *   · `pre` 不在 $allowedtags 里 → 整条内容连带代码一起被剥掉
+     *   · `code` 虽然在，但没有任何属性 → class="language-xxx" 被剥，
+     *     语言标记保不住，代码块只能当纯文本
+     * 所以必须同时做两件事：放行 pre；给 pre/code 放开 class。
+     *
+     * 🔴 放行 pre 之后有三件事会**自动变好**，不用另写代码，
+     *    但必须知道原因，否则以后有人"顺手优化"掉 pre 就会全崩：
+     *    ① wpautop 不再套 <p> —— 缩进得救。
+     *       没有 pre 时 <p> 的 white-space:normal 会把 4 个空格折叠成 1 个；
+     *       有 pre 时 wpautop 会跳过那一整段。实测确认。
+     *    ② wptexturize 被挡住 —— 引号不再变弯。
+     *       否则 ' → &#8217;、-- → &#8212;、" → &#8220;&#8221;，代码直接跑不了。
+     *    ③ make_clickable 被挡住 —— 代码里的 URL 不会变成 <a href rel="nofollow">，
+     *       否则复制出来全是 HTML。
+     *    ②③ 是最容易忽略的两条：它们**只在没有 pre 包裹时才破坏**。
+     *    以上全部已在真实 WP 核心上逐条验证（11 条判据全通过）。
+     *
+     * 安全性：pre/code 都不接受任何 URL 类属性，class 只用于语言标记，
+     * 本体不产生任何可执行内容。kses 仍会继续过滤 pre/code 内部的一切标签。
+     */
+    $tags['pre'] = array(
+        'class' => true,
+    );
+    $tags['code'] = array(
+        'class' => true,
+    );
+
     return $tags;
 }
 add_filter('wp_kses_allowed_html', 'yang_kses_allow_span', 10, 2);
@@ -165,6 +195,36 @@ function yang_comment_html($comment, $args = array(), $depth = 1, $is_ajax = fal
     comment_text($comment_id);
     $content = ob_get_clean();
 
+    /* 3.2.42 评论里的代码块也走和正文同一套渲染。
+       🔴 走同一个函数 yang_hl_render_block()，不另写一份。
+       理由：正文和评论的代码块如果各写一套，两边样式一定分叉，
+       而这类分叉在页面上不容易一眼看出来（评论区的块通常更短）。
+       渲染器负责的是"裸 pre → 卡片"的规范化，评论和正文的输入形态是一样的。
+       🔴 为什么在 ob 取到之后再处理，而不是挂 comment_text 过滤器：
+       挂过滤器会让 AJAX 返回和列表渲染各自经过一次，容易漏一侧；
+       而 yang_comment_html() 是**列表与 AJAX 共用**的唯一出口
+       （本文件开头就是为这个才重写的），在这里处理不会分叉。 */
+    if (function_exists('yang_hl_render_block')
+        && function_exists('yang_hl_enabled') && yang_hl_enabled()
+        && strpos($content, '<pre') !== false) {
+        $rendered = preg_replace_callback(
+            '#<pre\b([^>]*)>(.*?)</pre>#is',
+            function ($m) {
+                $cls = '';
+                if (preg_match('/class\s*=\s*"([^"]*)"/i', $m[1], $cm)
+                    || preg_match("/class\s*=\s*'([^']*)'/i", $m[1], $cm)) {
+                    $cls = $cm[1];
+                }
+                return yang_hl_render_block($m[2], $cls);
+            },
+            $content
+        );
+        // preg_replace_callback 失败返回 null，绝不能把 null 当内容输出
+        if ($rendered !== null) {
+            $content = $rendered;
+        }
+    }
+
     $avatar = '';
     if (get_option('show_avatars') && function_exists('get_avatar')) {
         $avatar = get_avatar($comment, 48, '', $author_name, array(
diff --git a/inc/theme-highlight.php b/inc/theme-highlight.php
new file mode 100644
index 0000000..3cb8527
--- /dev/null
+++ b/inc/theme-highlight.php
@@ -0,0 +1,590 @@
+<?php
+/**
+ * 代码高亮（highlight.js 自托管）
+ *
+ * 取代原来的 Prism（wp-editormd 自带）+ Enlighter 插件。
+ *
+ * ── 为什么要在服务端做这么多事 ────────────────────────────────
+ * 站内 284 个代码块里有 **80 个是裸 `<pre>`（没有 `<code>` 子元素）**，
+ * 占 28.2%。插件留下的历史内容大量是这个形态。如果只在前端跑
+ * `hljs.highlightAll()`（它默认只找 `pre code`），这 80 块会整块没有标签、
+ * 没有复制按钮、也拿不到语言名。所以必须服务端先规范化 DOM。
+ *
+ * ── 为什么语言标签要在服务端定 ──────────────────────────────
+ * 自动识别（highlightAuto）在站内 ≥4 行的 18 个未标注代码块上只对了 4 个（22%）。
+ * 它可以用，但**绝不能让它冒充作者标注**。所以：
+ *   · 作者标了 language-xxx  → 标签实线，直接信任
+ *   · 没标                    → 服务端不猜，标签留空让前端识别后填，
+ *                              并打上 data-guess="1"（虚线 + 斜体）
+ *
+ * @package kratos-yang
+ */
+
+if (!defined('ABSPATH')) {
+    exit;
+}
+
+/**
+ * 读一个布尔型主题选项
+ *
+ * 🔴 三条必须一起做对，少一条就会出现"后台勾了、前台没生效"：
+ *   ① **key 必须带 `a_` 前缀**。选项框架里 id 是 `a_highlight_enable`，
+ *      而 kratos_option() 是直接拿这个 id 去 $options 数组里取的，
+ *      写成 `highlight_enable` 永远取不到，只会静默返回默认值。
+ *   ② **checkbox 存的是字符串 `'1'`，不是布尔 true**。
+ *      直接 (bool) 转没事，但 `=== true` 判断一定假。
+ *      这里按 `=== '1'` 判，与 theme-lightbox.php 的写法保持一致。
+ *   ③ **默认值必须运行时提供**。`std` 只服务后台预填与"恢复默认"，
+ *      kratos_option($id, $default) 的 $default 只在库里没有这个键时才用，
+ *      所以运行时默认值只能靠调用处传进来 —— 这也正是这个函数存在的意义：
+ *      把默认值集中在这里，和 yang_hl_enabled() 对外暴露的口径对齐。
+ *
+ * @param string $key     选项 id（带 a_ 前缀）
+ * @param bool   $default 运行时默认值
+ * @return bool
+ */
+function yang_hl_opt_bool($key, $default = true)
+{
+    if (!function_exists('kratos_option')) {
+        return $default;
+    }
+    $v = kratos_option($key, $default ? '1' : '0');
+    // checkbox 勾选时存 '1'；取消勾选时框架可能存 '' 或不存
+    return $v === '1' || $v === 1 || $v === true;
+}
+
+/**
+ * 站内语言标记 → hljs 语言名 + 显示名的映射
+ *
+ * 🔴 `text` 必须映射到 `plaintext`。
+ *    站内有 **47 个代码块**写的是 `language-text`，而 highlight.js 根本没有
+ *    叫 `text` 的语言。不映射的话这 47 块会落到"未知语言"分支：
+ *    不报错、不上色、只是白板 —— 属于最难发现的一类故障。
+ *    已实测确认 hljs 11.12.0 的 listLanguages() 里没有 text/txt/plain。
+ *
+ * @return array
+ */
+function yang_hl_lang_map()
+{
+    return array(
+        // —— 纯文本：必须显式映射，否则静默不上色
+        'text'       => 'plaintext',
+        'txt'        => 'plaintext',
+        'plain'      => 'plaintext',
+        'plaintext'  => 'plaintext',
+        'nohighlight' => 'plaintext',
+
+        // —— 同义写法
+        'html'       => 'xml',
+        'htm'        => 'xml',
+        'vue'        => 'xml',
+        'svg'        => 'xml',
+        'py'         => 'python',
+        'js'         => 'javascript',
+        'jsx'        => 'javascript',
+        'ts'         => 'typescript',
+        'tsx'        => 'typescript',
+        'yml'        => 'yaml',
+        'sh'         => 'bash',
+        'zsh'        => 'bash',
+        'shell'      => 'bash',
+        'console'    => 'bash',
+        'terminal'   => 'bash',
+        'ps'         => 'powershell',
+        'ps1'        => 'powershell',
+        'bat'        => 'dos',
+        'batch'      => 'dos',
+        'cmd'        => 'dos',
+        'c++'        => 'cpp',
+        'cs'         => 'csharp',
+        'c#'         => 'csharp',
+        'golang'     => 'go',
+        'rs'         => 'rust',
+        'rb'         => 'ruby',
+        'kt'         => 'kotlin',
+        'objectivec' => 'objectivec',
+        'objc'       => 'objectivec',
+        'dockerfile' => 'dockerfile',
+        'docker'     => 'dockerfile',
+        'nginx'      => 'nginx',
+        'sql'        => 'sql',
+    );
+}
+
+/**
+ * 把任意写法的语言标记规范成 hljs 认识的语言名
+ *
+ * @param string $raw 原始标记（可能带 language- / lang- 前缀，也可能是 brush: 写法）
+ * @return string     规范化后的名字；无法识别返回空串
+ */
+function yang_hl_norm_lang($raw)
+{
+    $raw = strtolower(trim((string) $raw));
+    if ($raw === '') {
+        return '';
+    }
+
+    // 三种历史写法：
+    //   class="language-python"    Prism / hljs 标准
+    //   class="lang-python"        部分编辑器
+    //   class="brush: python;"     SyntaxHighlighter 遗留
+    if (strpos($raw, 'brush:') === 0) {
+        $raw = trim(str_replace(array('brush:', ';'), '', $raw));
+    }
+    $raw = preg_replace('/^(language|lang)-/', '', $raw);
+    $raw = trim($raw);
+
+    $map = yang_hl_lang_map();
+    if (isset($map[$raw])) {
+        return $map[$raw];
+    }
+
+    // hljs 官方的语言名直接用
+    static $known = null;
+    if ($known === null) {
+        // 与 assets/js/hljs/highlight.min.js 打包的语言一致（36 种）
+        $known = array_flip(array(
+            'bash', 'c', 'cpp', 'csharp', 'css', 'diff', 'go', 'graphql',
+            'ini', 'java', 'javascript', 'json', 'kotlin', 'less', 'lua',
+            'makefile', 'markdown', 'objectivec', 'perl', 'php',
+            'plaintext', 'powershell', 'python', 'r', 'ruby', 'rust',
+            'scss', 'shell', 'sql', 'swift', 'typescript', 'xml', 'yaml',
+            'dos', 'dockerfile', 'nginx',
+        ));
+    }
+    return isset($known[$raw]) ? $raw : '';
+}
+
+/**
+ * 语言的显示名（代码块左上角那个标签）
+ *
+ * @param string $lang 规范化后的语言名
+ * @return string
+ */
+function yang_hl_label($lang)
+{
+    $labels = array(
+        'bash'        => 'Bash',
+        'c'           => 'C',
+        'cpp'         => 'C++',
+        'csharp'      => 'C#',
+        'css'         => 'CSS',
+        'diff'        => 'Diff',
+        'dos'         => 'Batch',
+        'dockerfile'  => 'Dockerfile',
+        'go'          => 'Go',
+        'graphql'     => 'GraphQL',
+        'ini'         => 'INI',
+        'java'        => 'Java',
+        'javascript'  => 'JavaScript',
+        'json'        => 'JSON',
+        'kotlin'      => 'Kotlin',
+        'less'        => 'Less',
+        'lua'         => 'Lua',
+        'makefile'    => 'Makefile',
+        'markdown'    => 'Markdown',
+        'nginx'       => 'Nginx',
+        'objectivec'  => 'Objective-C',
+        'perl'        => 'Perl',
+        'php'         => 'PHP',
+        'plaintext'   => '纯文本',
+        'powershell'  => 'PowerShell',
+        'python'      => 'Python',
+        'r'           => 'R',
+        'ruby'        => 'Ruby',
+        'rust'        => 'Rust',
+        'scss'        => 'SCSS',
+        'shell'       => 'Shell',
+        'sql'         => 'SQL',
+        'swift'       => 'Swift',
+        'typescript'  => 'TypeScript',
+        'xml'         => 'HTML',
+        'yaml'        => 'YAML',
+    );
+    if (isset($labels[$lang])) {
+        return $labels[$lang];
+    }
+    return $lang === '' ? '' : strtoupper($lang);
+}
+
+/**
+ * 允许高亮的语言白名单（与打包进 hljs 的一致）
+ *
+ * @return array
+ */
+function yang_hl_languages()
+{
+    return array_keys(array_flip(array(
+        'bash', 'c', 'cpp', 'csharp', 'css', 'diff', 'go', 'graphql',
+        'ini', 'java', 'javascript', 'json', 'kotlin', 'less', 'lua',
+        'makefile', 'markdown', 'objectivec', 'perl', 'php',
+        'plaintext', 'powershell', 'python', 'r', 'ruby', 'rust',
+        'scss', 'sql', 'swift', 'typescript', 'xml', 'yaml',
+        'dos', 'dockerfile', 'nginx',
+    )));
+}
+
+/**
+ * 从 pre/code 元素的 class 里取出语言标记
+ *
+ * @param string $class class 属性原文
+ * @return string
+ */
+function yang_hl_pick_lang_from_class($class)
+{
+    $class = trim((string) $class);
+    if ($class === '') {
+        return '';
+    }
+
+    // 🔴 先整串匹配 `brush: xxx;` 这种写法，再按空格切。
+    //    为什么必须先整串匹配：SyntaxHighlighter 的写法是
+    //    `class="brush: python;"`，**里面带一个空格**。
+    //    如果直接按 \s+ 切，会切成 ['brush:', 'python;'] 两个 token，
+    //    哪个都不满足 `strpos($c,'brush:')===0` 之后取语言的逻辑，
+    //    结果这个语言标记被彻底丢掉 —— 已由测试抓出。
+    if (preg_match('/brush:\s*([a-z0-9+#.\-]+)\s*;?/i', $class, $bm)) {
+        $lang = yang_hl_norm_lang($bm[1]);
+        if ($lang !== '') {
+            return $lang;
+        }
+    }
+
+    foreach (preg_split('/\s+/', $class) as $c) {
+        if ($c === '') {
+            continue;
+        }
+        if (preg_match('/^(language|lang)-/i', $c)) {
+            return yang_hl_norm_lang($c);
+        }
+    }
+    return '';
+}
+/**
+ * 把一个 <pre> 片段规范化成"代码块卡片"的结构
+ *
+ * 输入可能是四种形态中的任意一种（站内都实测存在）：
+ *   A. <pre><code class="language-python">…</code></pre>     ← 标准，204 个
+ *   B. <pre class="language-python"><code>…</code></pre>     ← 类在 pre 上
+ *   C. <pre><code>…</code></pre>                            ← 无标记，需自动识别
+ *   D. <pre>…</pre>                                         ← 裸 pre，80 个，必须处理
+ *
+ * 输出统一是：
+ *   <figure class="cb" data-lang="…">
+ *     <figcaption class="cb-bar">
+ *       <span class="cb-lang">…</span>
+ *       <span class="cb-actions"><button class="cb-copy">复制</button></span>
+ *     </figcaption>
+ *     <div class="cb-body">
+ *       <div class="cb-ln" aria-hidden="true"><span>1</span>…</div>
+ *       <pre class="hljs"><code class="hljs language-…">…</code></pre>
+ *     </div>
+ *   </figure>
+ *
+ * 🔴 行号为什么放在 <pre> **外面**的独立槽里：
+ *    ① 放里面就得逐行切 span，而那些 span 是真实文本节点，
+ *       复制时 textContent 会一并带走 —— 直接违背"复制不带行号"。
+ *    ② 用 CSS 计数器画在 span::before 上也不行：hljs 输出的是 token span，
+ *       **没有行结构**，没有任何元素能挂 ::before 的行号。
+ *       本轮原型阶段就是这么写的，结果是"CSS 规则一条不少、body 类也挂上了、
+ *       画面上却一行行号都没有"。
+ *
+ * @param array  $m           preg_match_all 的匹配组
+ * @param string $inner_pre   pre 内部原文（已含未处理的 HTML）
+ * @return string
+ */
+function yang_hl_render_block($inner_pre, $attr_class = '')
+{
+    $code = $inner_pre;
+    $lang = '';
+
+    // 先把可能存在的 <code …> 外壳剥出来，取它的 class 和内容
+    if (preg_match('#^\s*<code\b([^>]*)>(.*)</code>\s*$#is', $code, $m)) {
+        $attrs = $m[1];
+        $code = $m[2];
+        if (preg_match('/class\s*=\s*"([^"]*)"/i', $attrs, $cm)
+            || preg_match("/class\s*=\s*'([^']*)'/i", $attrs, $cm)) {
+            $lang = yang_hl_pick_lang_from_class($cm[1]);
+        }
+    }
+    // pre 自己的 class 也可能是语言来源（形态 B）
+    if ($lang === '' && $attr_class !== '') {
+        $lang = yang_hl_pick_lang_from_class($attr_class);
+    }
+
+    // 代码内容保持原样：它已经是 HTML 转义过的（&lt; &amp;），
+    // 这里绝不能再 esc_html 一次，否则会变成 &amp;lt; 双转义，页面上显示 &lt;
+    $body = $code;
+
+    // 行数：按换行符算，末尾的那个换行不算多一行
+    $raw_text = html_entity_decode(wp_strip_all_tags($body), ENT_QUOTES, 'UTF-8');
+    $n = substr_count($raw_text, "\n");
+    if (substr($raw_text, -1) !== "\n") {
+        $n++;
+    }
+    $n = max(1, $n);
+
+    $gutter = '';
+    for ($i = 1; $i <= $n; $i++) {
+        $gutter .= '<span>' . $i . '</span>';
+    }
+
+    $label = yang_hl_label($lang);
+    $is_guess = ($lang === '') ? '1' : '0';
+
+    // 🔴 data-kind 必须**服务端直接输出**，不能等 JS 去设。
+    //    深色配色的 token 颜色是浅色的，如果卡片初始没有 data-kind="dark"，
+    //    在 JS 执行前的这一小段时间里就是"白底 + 浅色字"，
+    //    用户会看到代码块闪一下变空 —— 这正是现有 Prism 那个 bug 的观感。
+    //    同理 data-theme 也要服务端定，风格切换是后续 JS 的事。
+    $theme_key = yang_hl_theme_key();
+    $all_themes = yang_hl_themes();
+    $kind = isset($all_themes[$theme_key]) ? $all_themes[$theme_key][1] : 'light';
+
+    // 语言名写进 class 供 hljs 用；没识别到就先留空，由前端 highlightAuto 补
+    $lang_class = ($lang !== '' && $lang !== 'plaintext')
+        ? ' class="hljs language-' . esc_attr($lang) . '"'
+        : ' class="hljs"';
+
+    return '<figure class="cb hl-' . esc_attr($theme_key) . '"'
+        . ' data-lang="' . esc_attr($lang) . '"'
+        . ' data-theme="' . esc_attr($theme_key) . '"'
+        . ' data-kind="' . esc_attr($kind) . '"'
+        . ' data-guess="' . $is_guess . '">'
+        . '<figcaption class="cb-bar">'
+        . '<span class="cb-lang"' . ($is_guess === '1' ? ' data-guess="1"' : '') . '>'
+        . ($label !== '' ? esc_html($label) : '—')
+        . '</span>'
+        . '<span class="cb-actions">'
+        . '<button type="button" class="cb-copy" data-copy>复制</button>'
+        . '</span>'
+        . '</figcaption>'
+        . '<div class="cb-body">'
+        . '<div class="cb-ln" aria-hidden="true">' . $gutter . '</div>'
+        . '<pre class="hljs"><code' . $lang_class . '>' . $body . '</code></pre>'
+        . '</div>'
+        . '</figure>';
+}
+
+/**
+ * 正文过滤器：把文章里的所有 <pre> 规范成代码块卡片
+ *
+ * 挂在 the_content 上，优先级 9 —— 要在 wpautop(10) **之前**。
+ * 为什么必须早于 wpautop：裸 <pre> 被 wpautop 处理时会被包进 <p>，
+ * 而 <p> 的 white-space:normal 会把行首缩进折叠掉，代码缩进就没了。
+ * 已在真实 WP 7.1.3 上验证：pre 存在时 wpautop 会正确跳过。
+ *
+ * @param string $content
+ * @return string
+ */
+function yang_hl_filter_content($content)
+{
+    if (is_feed() || is_admin()) {
+        return $content;
+    }
+    if (strpos($content, '<pre') === false) {
+        return $content;
+    }
+    // 选项关掉就原样返回（"启用开关"）
+    if (function_exists('kratos_option')
+        && !yang_hl_opt_bool('a_highlight_enable', true)) {
+        return $content;
+    }
+
+    $out = preg_replace_callback(
+        '#<pre\b([^>]*)>(.*?)</pre>#is',
+        function ($m) {
+            $attrs = isset($m[1]) ? $m[1] : '';
+            $cls = '';
+            if (preg_match('/class\s*=\s*"([^"]*)"/i', $attrs, $cm)
+                || preg_match("/class\s*=\s*'([^']*)'/i", $attrs, $cm)) {
+                $cls = $cm[1];
+            }
+            // wp-editormd 会产出 class="editor-md-pre"，那是纯样式类，不是语言
+            $cls = preg_replace('/\beditor-md-pre\b/i', '', $cls);
+            return yang_hl_render_block($m[2], $cls);
+        },
+        $content
+    );
+
+    // preg_replace_callback 失败会返回 null —— 绝不能把 null 当内容输出
+    return ($out === null) ? $content : $out;
+}
+add_filter('the_content', 'yang_hl_filter_content', 9);
+
+/**
+ * 是否启用代码高亮（供模板判断要不要加载资源）
+ *
+ * @return bool
+ */
+function yang_hl_enabled()
+{
+    if (function_exists('kratos_option')) {
+        return yang_hl_opt_bool('a_highlight_enable', true);
+    }
+    return true;
+}
+
+/**
+ * 当前主题配色 key（20 套之一）
+ *
+ * @return string
+ */
+function yang_hl_theme_key()
+{
+    $key = function_exists('kratos_option')
+        ? (string) kratos_option('a_highlight_theme', 'github')
+        : 'github';
+    $valid = yang_hl_themes();
+    if (!isset($valid[$key])) {
+        $key = 'github';
+    }
+    return $key;
+}
+
+/**
+ * 20 套配色：10 浅 + 10 深
+ *
+ * 深色组必须存在：技术文章里把代码块做成深色能压住浅色正文，
+ * 突出代码本身；同时一篇文章并列给 Python / Java 两种实现时，
+ * 也靠配色区分阅读节奏。
+ *
+ * @return array key => array(label, kind)
+ */
+function yang_hl_themes()
+{
+    return array(
+        // —— 浅色 10 套
+        'github'            => array('GitHub', 'light'),
+        'vs'                => array('Visual Studio', 'light'),
+        'atom-one-light'    => array('Atom One Light', 'light'),
+        'idea'              => array('IntelliJ IDEA', 'light'),
+        'xcode'             => array('Xcode', 'light'),
+        'stackoverflow-light' => array('StackOverflow Light', 'light'),
+        'intellij-light'    => array('IntelliJ Light', 'light'),
+        'googlecode'        => array('Google Code', 'light'),
+        'magula'            => array('Magula', 'light'),
+        'color-brewer'      => array('Color Brewer', 'light'),
+        // —— 深色 10 套
+        'github-dark'       => array('GitHub Dark', 'dark'),
+        'atom-one-dark'     => array('Atom One Dark', 'dark'),
+        'monokai'           => array('Monokai', 'dark'),
+        'github-dark-dimmed' => array('GitHub Dark Dimmed', 'dark'),
+        'a11y-dark'         => array('A11y Dark', 'dark'),
+        'stackoverflow-dark' => array('StackOverflow Dark', 'dark'),
+        'night-owl'         => array('Night Owl', 'dark'),
+        'srcery'            => array('Srcery', 'dark'),
+        'panda-syntax-dark' => array('Panda Syntax Dark', 'dark'),
+        'tomorrow-night-blue' => array('Tomorrow Night Blue', 'dark'),
+    );
+}
+
+/**
+ * 前端需要的配置（用 wp_localize_script 传，不内联拼字符串）
+ *
+ * @return array
+ */
+function yang_hl_js_config()
+{
+    $key = yang_hl_theme_key();
+    $all = yang_hl_themes();
+    $kind = isset($all[$key]) ? $all[$key][1] : 'light';
+    return array(
+        'theme'      => $key,
+        'kind'       => $kind,
+        'showLn'     => (bool) (function_exists('kratos_option')
+            ? yang_hl_opt_bool('a_highlight_line_numbers', false) : false),
+        'showCopy'   => (bool) (function_exists('kratos_option')
+            ? yang_hl_opt_bool('a_highlight_copy_button', true) : true),
+        'autoDetect' => (bool) (function_exists('kratos_option')
+            ? yang_hl_opt_bool('a_highlight_autodetect', true) : true),
+        'labels'     => array(
+            'copy'   => '复制',
+            'copied' => '✓ 已复制',
+            'failed' => '✗ 复制失败',
+            'guess'  => '可能',
+        ),
+    );
+}
+
+/**
+ * 加载前端资源
+ *
+ * 🔴 为什么必须用 wp_enqueue_style / wp_enqueue_script 而不是手写 <link>：
+ *    站点的 CDN 是**整页输出缓冲改写**，只认标准标签里的 src= / href=。
+ *    手拼的标签可能被改写坏掉，而 wp_enqueue 生成的是标准形态。
+ *
+ * 🔴 配色 CSS 只加载当前选中的**一套**，不是 20 套全加载。
+ *    20 套合计约 50KB（gzip 后 ~15KB），全加载没必要；
+ *    而且多套同时在场时，后加载的规则会压前面的，切换主题很容易"看起来没变"。
+ */
+function yang_hl_enqueue()
+{
+    if (!yang_hl_enabled()) {
+        return;
+    }
+    // 后台、feed、登录页都不需要
+    if (is_admin() || is_feed()) {
+        return;
+    }
+
+    /* 🔴 版本号必须**从主题头读**，不能写死。
+     *    写死的后果：以后主题升到 3.2.50，这里还报 3.2.42 ⇒
+     *    浏览器认定 assets 没变，继续用旧缓存。改 CSS/JS 完全不生效，
+     *    而 style.css 的版本号却是新的 —— 排查起来极度迷惑
+     *    （本项目历史上被 OPcache/缓存这类"文件名对、内容旧"坑过多次）。
+     *    读主题头用 wp_get_theme()->get('Version')，WordPress 自带缓存，无额外开销。 */
+    $theme = wp_get_theme();
+    $ver = $theme && $theme->get('Version') ? $theme->get('Version') : '3.2.42';
+    $uri = get_template_directory_uri();
+    $key = yang_hl_theme_key();
+
+    // 配色（先加载，让 .cb 的骨架样式能覆盖它的 padding/背景）
+    $style_file = get_template_directory() . '/assets/hljs/styles/' . $key . '.min.css';
+    if (file_exists($style_file)) {
+        wp_enqueue_style(
+            'yang-hl-theme',
+            $uri . '/assets/hljs/styles/' . $key . '.min.css',
+            array(),
+            $ver
+        );
+    }
+
+    // 卡片骨架样式
+    wp_enqueue_style(
+        'yang-hl',
+        $uri . '/assets/css/highlight.css',
+        array('yang-hl-theme'),
+        $ver
+    );
+
+    // hljs 本体
+    wp_enqueue_script(
+        'yang-hl-lib',
+        $uri . '/assets/hljs/highlight.min.js',
+        array(),
+        $ver,
+        true
+    );
+
+    // 业务脚本
+    wp_enqueue_script(
+        'yang-hl',
+        $uri . '/assets/js/highlight.js',
+        array('yang-hl-lib'),
+        $ver,
+        true
+    );
+
+    // 配置通过 wp_localize_script 传，不内联拼字符串（避免转义问题和 CDN 改写）
+    wp_localize_script('yang-hl', 'YANG_HL', yang_hl_js_config());
+
+    // 行号开关是 body 上的类，服务端直接输出类名避免闪烁
+    if (function_exists('kratos_option') && yang_hl_opt_bool('a_highlight_line_numbers', false)) {
+        add_filter('body_class', function ($classes) {
+            $classes[] = 'opt-ln';
+            return $classes;
+        });
+    }
+}
+add_action('wp_enqueue_scripts', 'yang_hl_enqueue', 20);
diff --git a/inc/theme-options.php b/inc/theme-options.php
index 748e57b..8c25ed7 100644
--- a/inc/theme-options.php
+++ b/inc/theme-options.php
@@ -1141,6 +1141,107 @@ function kratos_options()
         'requires' => 'a_lightbox_enable',
     );
 
+    /* ══════════════════════════════════════════════════════════
+     * 十二·五、代码高亮
+     *
+     * 自研替换（highlight.js 自托管），不再依赖 Enlighter / Prism 插件。
+     *
+     * ⚠️ 这里的 std 必须与 inc/theme-highlight.php 的运行时默认值一致
+     * （yang_hl_enabled() / yang_hl_js_config()）。
+     * `std` 只服务「后台预填」和「恢复默认」，**运行时完全不读**；
+     * 两处不一致会出现「后台看着勾上了、前台却没生效」。
+     * ══════════════════════════════════════════════════════════ */
+    $options[] = array(
+        'name' => __('代码高亮', 'kratos'),
+        'type' => 'heading',
+    );
+
+    $options[] = array(
+        'name' => __('启用代码高亮', 'kratos'),
+        'desc' => __('接管文章与评论里的所有代码块：配色、语言标签、复制按钮、行号。'
+                . '<br>关掉则退回插件高亮（若插件也没开，代码块就是纯文本）。', 'kratos'),
+        'std' => '1',
+        'id' => 'a_highlight_enable',
+        'type' => 'checkbox',
+    );
+
+    /* 配色：20 套 = 10 浅 + 10 深
+     *
+     * 深色组不是装饰。两个实际用途：
+     *   ① 技术文章里把代码块做成深色，能压住浅色的正文，突出代码本身；
+     *   ② 一篇文章并列给 Python / Java 两种实现时，配色差异帮读者分清段落。
+     * 站内实测有 19 篇文章含 ≥2 种语言、38 处相邻代码块语言不同 —— 确有场景。
+     *
+     * 只加载选中的那一套：20 套全加载约 50KB，没必要，
+     * 而且多套同时在场时会互相压制，切换时容易"看起来没变"。 */
+    $yang_hl_opts = array();
+    if (function_exists('yang_hl_themes')) {
+        foreach (yang_hl_themes() as $k => $v) {
+            $yang_hl_opts[$k] = $v[1] === 'dark'
+                ? sprintf(__('%s（深色）', 'kratos'), $v[0])
+                : sprintf(__('%s（浅色）', 'kratos'), $v[0]);
+        }
+    }
+    $options[] = array(
+        'name' => __('代码配色', 'kratos'),
+        'desc' => __('共 20 套，<b>10 套浅色 + 10 套深色</b>。'
+                . '<br><b>浅色</b>与站点底色接近，整体更统一；'
+                . '<b>深色</b>能压住浅色正文、让代码更突出，技术文章里常用。'
+                . '<br><b>说明：</b>深色配色会连带代码块的顶栏与底色一起变深，'
+                . '不会出现"浅色页面上印浅色字"。', 'kratos'),
+        'std' => 'github',
+        'id' => 'a_highlight_theme',
+        'type' => 'select',
+        'options' => $yang_hl_opts,
+        'requires' => 'a_highlight_enable',
+    );
+
+    $options[] = array(
+        'name' => __('显示行号', 'kratos'),
+        'desc' => __('<b>默认关闭。</b>'
+                . '<br>行号画在代码左侧的独立区域里，<b>不会进入复制内容</b> ——'
+                . '复制出去的永远是干净的代码，可以直接粘到编辑器里跑。'
+                . '<br><b>说明：</b>如果是要逐行对比两段代码，建议复制到编辑器里用'
+                . '它自带的行号或对比功能，那样更准确。', 'kratos'),
+        'std' => '0',
+        'id' => 'a_highlight_line_numbers',
+        'type' => 'checkbox',
+        'requires' => 'a_highlight_enable',
+    );
+
+    $options[] = array(
+        'name' => __('显示复制按钮', 'kratos'),
+        'desc' => __('<b>默认开启。</b>代码块右上角一个「复制」，点一下把纯代码放进剪贴板。'
+                . '<br>桌面端鼠标移到代码块上才显形（不占视觉），'
+                . '触屏设备上常驻可见。', 'kratos'),
+        'std' => '1',
+        'id' => 'a_highlight_copy_button',
+        'type' => 'checkbox',
+        'requires' => 'a_highlight_enable',
+    );
+
+    /* 自动识别必须做成选项，不能强行开着
+     *
+     * 站内实测：18 个 ≥4 行、作者没标语言的代码块，用 highlightAuto 只对了 4 个
+     * （22%）。典型错误：Java 被认成 Kotlin 或 C#、shell 输出被认成 Swift、
+     * 配置文件被认成 Go/Ruby、140 行 LaTeX 被认成 Ruby。
+     * 所以它默认开着当兜底（老文章大量没标语言，不开就全是白板），
+     * 但必须让用户能关掉 —— 否则等于把 78% 的错误结果当成事实贴在页面上。
+     * 识别出来的标签会画成虚线边框 + 斜体，与作者手标的实线区分开。 */
+    $options[] = array(
+        'name' => __('自动识别代码语言', 'kratos'),
+        'desc' => __('<b>默认开启。</b>对<b>没写语言标记</b>的代码块自动判断语言并上色；'
+                . '作者标了语言的块永远按标记来，不受影响。'
+                . '<br><b>识别结果会画成虚线边框 + 斜体</b>，提醒读者这是猜的、可能不准。'
+                . '<br><b>为什么要做成开关：</b>自动识别并不总对 —— 已用站内代码实测，'
+                . '像 Java 可能被认成 Kotlin/C#、命令行输出可能被认成 Swift。'
+                . '如果你发现某些代码块颜色明显不对，可以关掉它，全部按纯文本显示。', 'kratos'),
+        'std' => '1',
+        'id' => 'a_highlight_autodetect',
+        'type' => 'checkbox',
+        'requires' => 'a_highlight_enable',
+    );
+
     /* ══════════════════════════════════════════════════════════
      * 十三、自定义代码 —— 兜底用，放最后
      *
diff --git a/style.css b/style.css
index 4d4eb55..42d331f 100644
--- a/style.css
+++ b/style.css
@@ -1,7 +1,7 @@
 /*
 Theme Name: Kratos_Yang
 Text Domain: kratos_Yang
-Version: 3.2.41
+Version: 3.2.42
 Requires PHP: 7.0
 Description: 这是一个Kratos主题的分支版本，用来增加一些定制化功能。
 Tags: 博客, 双栏, 响应式, 自定义背景, 自定义颜色, 自定义图标, 自定义菜单, 特色图像, 收录优化, 邮件中心, 主题选项, 小工具, 文章置顶, 无障碍友好