优化复刻视频脚本和下拉框样式

core/frontend/src/pipeline-page.css

@@ -1480,8 +1480,9 @@
   .setup-card .setup-lead { font-size: 13px; line-height: 1.5; color: var(--accent-black); margin-bottom: 6px; }
   .setup-card .setup-field { display: grid; grid-template-columns: 64px 1fr; align-items: center; gap: 10px; }
   .setup-card .setup-field .sf-k { font-family: var(--font-mono); font-size: 12px; color: var(--black-alpha-48); letter-spacing: .04em; }
-  .setup-card .setup-select { height: 32px; width: 100%; padding: 0 10px; font-size: 13px; font-family: inherit; color: var(--accent-black); background: var(--surface); border: 1px solid var(--border-faint); border-radius: var(--r-sm); outline: none; cursor: pointer; }
-  .setup-card .setup-select:focus { border-color: var(--heat); box-shadow: 0 0 0 3px var(--heat-12); }
+  .setup-card .setup-select { width: 100%; }
+  .as-spec-field .rs-select { width: 100%; }
+  .props-row .rs-select { flex: 1; min-width: 0; }
   /* 说明行左缩进 = 标签列 64 + gap 10,跟下拉框左边缘对齐 */
   .setup-card .setup-rec { font-size: 12px; line-height: 1.5; color: var(--black-alpha-40); margin: 0 0 8px 74px; }
   .setup-card .setup-rec.warn { color: var(--accent-honey); }