Always use template.html as the outer shell. Do not improvise a new visual style week to week.
Visual system
Canvas: #F4F1EB
Content surface: #FFFDF9
Primary ink / dark buttons: #0B1830
Accent / primary CTA: #EF3340
Accent wash: #FFF0F2
Secondary text: #586171 / #7B818A
Borders: #E7E2DA / #DDD7CE
Max width: 640px
Inline CSS only; tables for email-safe layout; no style block, JS, external CSS.
Images
Keep the Singapore skyline hero from template.html.
Every Top 3 item MUST have a wide relevant image.
Standard items should use a 132x118 thumbnail whenever a stable relevant image exists.
Prefer official event/venue artwork or OG image, then official promoter/ticketing artwork, then reputable editorial artwork, then a tasteful category fallback.
Never use search-result thumbnail URLs, data URIs, expiring signed URLs, social-media hotlinks, or watermarked images.
If no stable relevant image is available, omit that thumbnail cleanly instead of using a broken/irrelevant one.