First-screen background — since 2026-10-12 (location-verified photos, cross-fading in this order)

hero/01_laos_kuangsi.jpg — Chutes de Kuang Si, Luang Prabang, Laos
  Source: https://commons.wikimedia.org/wiki/File:Kuang_Si_Falls,_Laos.jpg
  Author: Justin Vidamo — Licence: CC BY 2.0 https://creativecommons.org/licenses/by/2.0
  Changes: cropped to 1080x1620 and compressed (bottom 5% removed)

hero/02_laos_that_luang.jpg — Pha That Luang, Vientiane, Laos
  Source: https://commons.wikimedia.org/wiki/File:Pha_That_Luang_Vientiane_Laos_1.jpg
  Author: Philip Nalangan — Licence: CC BY 4.0 https://creativecommons.org/licenses/by/4.0
  Changes: cropped to 1080x1620 and compressed

hero/03_vietnam_halong.jpg — Baie d'Ha Long, Vietnam
  Source: https://commons.wikimedia.org/wiki/File:Ha_Long_Bay,_Tower_karsts.jpg
  Author: Vyacheslav Argenberg — Licence: CC BY 4.0 https://creativecommons.org/licenses/by/4.0
  Changes: cropped to 1080x1620 and compressed

hero/04_laos_luangprabang.jpg — Luang Prabang vu du mont Phousi, Laos
  Source: https://commons.wikimedia.org/wiki/File:20191212_Luang_Prabang_view_Phousi_Hill-10.jpg
  Author: Balon Greyjoy — Licence: Public domain 
  Changes: cropped to 1080x1620 and compressed

hero/05_thailande_wat_arun.jpg — Wat Arun et Chao Phraya, Bangkok, Thaïlande
  Source: https://commons.wikimedia.org/wiki/File:Wat_Arun_03-2012-01.JPG
  Author: Rolf Heinrich, Köln — Licence: CC BY 3.0 https://creativecommons.org/licenses/by/3.0
  Changes: cropped to 1080x1620 and compressed

Previous background (no longer displayed since 2026-10-12, file kept):
hero_mekong.mp4 / hero_mekong_poster.jpg
Source: https://pixabay.com/videos/thailand-mekong-river-asia-boat-32191/
Author: Expatsiam (published 2020-02-11) — Pixabay Content License (https://pixabay.com/service/license-summary/)
Downloaded: 2026-09-21 (rendition "small" 960x540, 12 s, 2.3 MB). No people/brands checked on thumbnail and frames at 1 s, 5.9 s; full 12 s not reviewed frame by frame.