Vendor templates and prefer local template assets

templates/blocks/headers/section-title-with-bg.html

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+<!-- 섹션 타이틀: 배경 헤더 위 영문+한글 타이틀 오버레이 -->
+<!--
+  📋 section-title
+  ─────────────────
+  용도: 자세히보기 페이지 상단, 배경 이미지 위에 타이틀 표시
+  슬롯: title_ko (필수), title_en (선택), breadcrumb (선택), bg_image (선택)
+  Figma 원본: 공통 > section_title + bg 컴포넌트
+-->
+<div class="block-section-title">
+  {% if bg_image %}
+  <img class="st-bg" src="{{ bg_image }}" alt="">
+  {% else %}
+  <div class="st-bg st-bg-default"></div>
+  {% endif %}
+  {% if breadcrumb %}
+  <div class="st-breadcrumb">{{ breadcrumb }}</div>
+  {% endif %}
+  <div class="st-text">
+    {% if title_en %}<div class="st-en">{{ title_en }}</div>{% endif %}
+    <div class="st-ko">{{ title_ko }}</div>
+  </div>
+</div>
+
+<style>
+.block-section-title {
+  position: relative;
+  width: 100%;
+  height: 500px;
+  overflow: hidden;
+}
+.st-bg {
+  position: absolute;
+  inset: 0;
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+  z-index: 1;
+}
+.st-bg-default {
+  background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 50%, #4dc4ff 100%);
+}
+.st-breadcrumb {
+  position: absolute;
+  top: 18px;
+  left: 89px;
+  z-index: 5;
+  font-size: 13px;
+  color: rgba(255,255,255,0.7);
+}
+.st-text {
+  position: absolute;
+  bottom: 40px;
+  left: 89px;
+  z-index: 5;
+}
+.st-en {
+  font-size: 15px;
+  font-weight: var(--weight-normal, 400);
+  color: #ffffff;
+  opacity: 0.85;
+  margin-bottom: 4px;
+}
+.st-ko {
+  font-size: 35px;
+  font-weight: var(--weight-bold, 700);
+  color: #ffffff;
+  line-height: 1.3;
+}
+</style>