@media (max-width: 767px) {
 html, body { min-width: 0; }
 img { max-width: 100%; }
 video, iframe { max-width: 100%; }
 #content-video { width: 100%; height: auto; }
 .article-content { box-sizing: border-box; min-width: 0; max-width: 100%; padding: 14px !important; text-align: left; font-size: 16px; line-height: 1.85; overflow-wrap: anywhere; }
 .article-content h1 { font-size: 24px; line-height: 1.4; margin: 0 0 16px; white-space: normal; }
 .article-content p { margin: 0 0 14px; }
 .article-content img { height: auto; }
 .article-content pre { white-space: pre-wrap; overflow-wrap: anywhere; }
 .article-content table { display: block; max-width: 100%; overflow-x: auto; }
}
@media (max-width: 767px) {
 .box1 .nav { display: flex; flex-wrap: wrap; gap: 0; }
 .box1 .nav a { box-sizing: border-box; flex: 0 0 25%; width: auto; min-width: 0; min-height: 44px; padding: 8px 4px; line-height: 1.5; white-space: normal; overflow-wrap: anywhere; }
}

img[src=""], img:not([src]) { display: none !important; }
/* library media */
.library-media { box-sizing: border-box; clear: both; width: 100%; max-width: 960px; margin: 20px auto; padding: 12px; text-align: center; }
.library-media[hidden], .library-media [hidden] { display: none !important; }
#library-picture { display: block; max-width: 100%; max-height: 560px; width: auto; height: auto; margin: auto; object-fit: contain; }
#content-video { display: block; width: 100%; max-width: 100%; height: auto; aspect-ratio: 16 / 9; background: #111; }
#video-start { min-height: 44px; padding: 10px 24px; border: 1px solid currentColor; border-radius: 4px; font: inherit; cursor: pointer; }
#video-message { margin: 12px 0 0; line-height: 1.6; }