feat: publish representation and depth chapter

src/pages/index.astro

@@ -8,6 +8,7 @@ const routes: Record<string, string> = {
   roadmap: "/roadmap/",
   "foundations/language-models": "/foundations/language-models/",
   foundations: "/foundations/",
+  "architecture/representation": "/architecture/representation/",
   scaling: "/scaling/",
   "pretraining/data": "/pretraining/data/",
   moe: "/moe/",
@@ -87,6 +88,7 @@ const paths = [
           <a class="button primary" href="/roadmap/">选择学习路径 <span aria-hidden="true">↓</span></a>
           <a class="button" href="/foundations/language-models/">语言模型从哪里来</a>
           <a class="button" href="/foundations/">注意力与 Transformer</a>
+          <a class="button" href="/architecture/representation/">表示、位置与残差</a>
           <a class="button" href="/k3/">直接解剖 K3</a>
           <a class="button" href="/deepseek/">DeepSeek 专题</a>
           <a class="button" href="/scaling/">Scaling Laws 专题</a>
@@ -110,7 +112,7 @@ const paths = [
         <div class="hero-stats">
           <div><b>17</b><span>核心专题</span></div>
           <div><b>151</b><span>K3 报告来源</span></div>
-          <div><b>450</b><span>关键论文索引</span></div>
+          <div><b>480</b><span>关键论文索引</span></div>
           <div><b>47p</b><span>K3 技术报告</span></div>
         </div>
       </aside>
@@ -124,6 +126,22 @@ const paths = [
 
   <section class="section compact release-section" id="new-chapters">
     <div class="release-grid">
+      <a class="release-card representation-release" href="/architecture/representation/">
+        <div>
+          <p class="eyebrow"><span>NEW / CHAPTER 03</span> TOKEN · POSITION · DEPTH · FFN</p>
+          <h2>一条 hidden state 同时沿词表、位置、深度和非线性四个坐标轴被改写</h2>
+          <p>
+            用二十张问题账从 Token、embedding 与上下文化表示，走到 RoPE / NoPE、Pre / Post-LN、
+            DeepSeek mHC 与 partial RoPE，以及 Kimi K3 的 9 个 AttnRes 深度来源和有界 SiTU-GLU。
+          </p>
+        </div>
+        <dl>
+          <div><dt>LINEAGE</dt><dd>2003 → 2026</dd></div>
+          <div><dt>NODES</dt><dd>66 个一手节点</dd></div>
+          <div><dt>LAB</dt><dd>Token · 位置 · Norm · Residual / FFN</dd></div>
+        </dl>
+        <span class="release-arrow" aria-hidden="true">从一个 Token 进入完整表示生命史 →</span>
+      </a>
       <a class="release-card evaluation-release" href="/evaluation/">
         <div>
           <p class="eyebrow"><span>NEW / CHAPTER 15</span> SCORE · PROTOCOL · THREAT MODEL</p>
@@ -581,6 +599,7 @@ const paths = [
       transition: transform 180ms ease, border-color 180ms ease;
     }
 
+    .representation-release,
     .inference-release,
     .agent-release,
     .alignment-release,
@@ -595,6 +614,14 @@ const paths = [
       min-height: 510px;
     }
 
+    .representation-release {
+      background:
+        radial-gradient(circle at 82% 18%, rgba(159, 91, 52, 0.22), transparent 31%),
+        radial-gradient(circle at 61% 74%, rgba(56, 91, 128, 0.16), transparent 28%),
+        repeating-linear-gradient(90deg, transparent 0 56px, rgba(159, 91, 52, 0.04) 56px 57px),
+        var(--paper-raised);
+    }
+
     .inference-release {
       background:
         radial-gradient(circle at 82% 18%, rgba(35, 86, 84, 0.22), transparent 31%),
@@ -733,6 +760,7 @@ const paths = [
         padding-bottom: 76px;
       }
 
+      .representation-release,
       .inference-release,
       .alignment-release,
       .transformer-release,