#water-video {
 box-sizing: border-box;
 width: min(540px, 96vw);
 max-height: 96dvh;
 padding: 16px;
 border: 1px solid #50636d;
 border-radius: 10px;
 background: #121e26;
 color: #e3eeeb;
}
#water-video::backdrop { background: #000b; }
#water-video header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 12px; }
#water-video h2 { font: bold 20px sans-serif; margin: 0; color: #a3edc9; }
#water-video button { min-height: 44px; padding: 8px 16px; cursor: pointer; }
#water-video video { display: block; width: 100%; max-height: calc(96dvh - 96px); aspect-ratio: 1; background: #000; }