feat: 西班牙语日记学习工具与知识库

knowledge.html

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+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>西班牙语知识库 — 现代西班牙语1</title>
+  <link rel="stylesheet" href="knowledge/style.css">
+</head>
+<body>
+  <nav class="top-nav">
+    <a class="back" href="index.html">← 返回日记</a>
+    <span class="home">📚 西班牙语知识库</span>
+  </nav>
+
+  <h1>现代西班牙语 1 知识库</h1>
+  <p class="page-subtitle">按外研社教材整理，语音 + 语法共 40 个知识点，支持点击发音。</p>
+
+  <div class="category-grid">
+    <a class="category-card" href="knowledge/fonetica.html">
+      <h2>🔊 语音发音</h2>
+      <p>字母表、元音、辅音、音节与重音</p>
+      <span class="count">8 个知识点</span>
+    </a>
+    <a class="category-card" href="knowledge/sustantivo.html">
+      <h2>📦 名词与冠词</h2>
+      <p>名词的性数、定冠词、不定冠词</p>
+      <span class="count">4 个知识点</span>
+    </a>
+    <a class="category-card" href="knowledge/adjetivo.html">
+      <h2>🎨 形容词</h2>
+      <p>形容词变化、位置、指示与物主形容词</p>
+      <span class="count">4 个知识点</span>
+    </a>
+    <a class="category-card" href="knowledge/pronombre.html">
+      <h2>👤 代词</h2>
+      <p>人称、宾格、与格、指示、疑问代词</p>
+      <span class="count">5 个知识点</span>
+    </a>
+    <a class="category-card" href="knowledge/verbo.html">
+      <h2>⚡ 动词与时态</h2>
+      <p>规则变位、现在时、完成时、过去时</p>
+      <span class="count">7 个知识点</span>
+    </a>
+    <a class="category-card" href="knowledge/otros.html">
+      <h2>🧩 词类与句型</h2>
+      <p>副词、介词、数词、常用句型</p>
+      <span class="count">12 个知识点</span>
+    </a>
+  </div>
+
+  <script src="speech.js"></script>
+  <script>
+    document.addEventListener('click', function(e) {
+      var btn = e.target.closest('.speak-btn');
+      if (btn) {
+        var lang = btn.dataset.lang || 'es';
+        var text = btn.dataset.text;
+        if (text) speakText(text, lang);
+      }
+    });
+  </script>
+</body>
+</html>