diff --git a/src/index.css b/src/index.css
index 985e11b..2df43aa 100644
--- a/src/index.css
+++ b/src/index.css
@@ -136,8 +136,8 @@
 
 /* Table */
 .ProseMirror table { border-collapse: collapse; width: 100%; margin: 0.75em 0; font-size: 0.9em; }
-.ProseMirror th, .ProseMirror td { border: 1px solid var(--border); padding: 0.5em 0.75em; text-align: left; }
-.ProseMirror th { background: var(--bg-muted); font-weight: 600; }
+.ProseMirror th, .ProseMirror td { border: 1px solid var(--border); padding: 0.5em 0.75em; text-align: left; min-width: 80px; }
+.ProseMirror th { background: var(--bg-muted); font-weight: 600; color: var(--text); border-bottom: 2px solid var(--border); }
 
 /* Placeholder */
 .ProseMirror p.is-editor-empty:first-child::before {