feat: publish alignment deep dive

src/pages/index.astro

@@ -12,6 +12,7 @@ const routes: Record<string, string> = {
   "pretraining/data": "/pretraining/data/",
   moe: "/moe/",
   "long-context": "/long-context/",
+  "post-training/alignment": "/post-training/alignment/",
   reasoning: "/reasoning/",
   "training-systems": "/training-systems/",
   "systems/numerics": "/systems/numerics/",
@@ -88,6 +89,7 @@ const paths = [
           <a class="button" href="/pretraining/data/">数据工程专题</a>
           <a class="button" href="/moe/">MoE 专题</a>
           <a class="button" href="/long-context/">长上下文专题</a>
+          <a class="button" href="/post-training/alignment/">后训练与偏好专题</a>
           <a class="button" href="/reasoning/">推理专题</a>
           <a class="button" href="/training-systems/">训练系统专题</a>
           <a class="button" href="/systems/numerics/">数值与优化专题</a>
@@ -100,7 +102,7 @@ const paths = [
         <div class="hero-stats">
           <div><b>16</b><span>核心专题</span></div>
           <div><b>151</b><span>K3 报告来源</span></div>
-          <div><b>258</b><span>关键论文索引</span></div>
+          <div><b>280</b><span>关键论文索引</span></div>
           <div><b>47p</b><span>K3 技术报告</span></div>
         </div>
       </aside>
@@ -114,6 +116,22 @@ const paths = [
 
   <section class="section compact release-section" id="new-chapters">
     <div class="release-grid">
+      <a class="release-card alignment-release" href="/post-training/alignment/">
+        <div>
+          <p class="eyebrow"><span>NEW / CHAPTER 10</span> ALIGNMENT · PREFERENCE</p>
+          <h2>DPO 没有“消灭 RLHF”，RLHF 也不等于只跑一次 PPO</h2>
+          <p>
+            用目标、监督、来源、SFT、偏好、奖励、更新、分布、约束、失效与证据十二张账，
+            从 2017 人类偏好学习一路走到 InstructGPT、Constitutional AI、DPO、DeepSeek-R1/V4 与 Kimi K3。
+          </p>
+        </div>
+        <dl>
+          <div><dt>LINEAGE</dt><dd>2017 → 2026</dd></div>
+          <div><dt>PAPERS</dt><dd>44 个一手节点</dd></div>
+          <div><dt>LAB</dt><dd>SFT · RM · PPO/DPO · 配方比较</dd></div>
+        </dl>
+        <span class="release-arrow" aria-hidden="true">从 Base Model 进入可协作助手 →</span>
+      </a>
       <a class="release-card transformer-release" href="/foundations/">
         <div>
           <p class="eyebrow"><span>NEW / CHAPTER 02</span> ATTENTION · TRANSFORMER</p>
@@ -491,6 +509,7 @@ const paths = [
       transition: transform 180ms ease, border-color 180ms ease;
     }
 
+    .alignment-release,
     .transformer-release,
     .foundation-release,
     .numerics-release,
@@ -502,6 +521,14 @@ const paths = [
       min-height: 510px;
     }
 
+    .alignment-release {
+      background:
+        radial-gradient(circle at 82% 18%, rgba(134, 76, 76, 0.2), transparent 30%),
+        radial-gradient(circle at 62% 74%, rgba(76, 118, 112, 0.11), transparent 28%),
+        repeating-linear-gradient(90deg, transparent 0 72px, rgba(134, 76, 76, 0.04) 72px 73px),
+        var(--paper-raised);
+    }
+
     .numerics-release {
       background:
         radial-gradient(circle at 82% 18%, rgba(113, 82, 137, 0.2), transparent 30%),
@@ -616,6 +643,7 @@ const paths = [
         padding-bottom: 76px;
       }
 
+      .alignment-release,
       .transformer-release,
       .foundation-release,
       .numerics-release,