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img{display:block;max-width:90vw;max-height:83dvh;object-fit:contain}#close-image{display:block;margin-left:auto;font-size:24px}#search-results{font-size:14px;color:#536157}[hidden]{display:none!important}@media(max-width:850px){header{padding:12px 16px;gap:10px}.intro{padding:30px 16px 20px}.layout{grid-template-columns:1fr;padding:0 12px 36px;gap:18px}#contents{position:static;max-height:240px;background:#fff8;border:1px solid #d5d9ca;border-radius:12px;padding:8px}#contents details:not([open]){display:inline-block;border:0}#contents details[open]{display:block}.article{padding:20px}.cards{gap:10px}.topic{padding:14px}.topic .num{font-size:20px;min-width:26px}footer{flex-wrap:wrap;padding:24px 16px}}@media(max-width:480px){header{flex-wrap:wrap}.brand{flex:1}header .button{font-size:13px;padding:10px}header .language-picker{order:0}.cards{grid-template-columns:1fr}.intro h1{font-size:30px}.article{padding:16px;border-radius:12px}.steps li{font-size:15px}.device-grid{gap:5px;padding:8px}.player{gap:7px}.player output{font-size:11px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}@media print{header,aside,.search,.player,.enlarge,.article-actions,.back{display:none!important}.layout{display:block}.article{border:0;box-shadow:none}body{background:white}footer{font-size:11px}}

.quick-demos{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:26px}.quick-demos a{border:1px solid #d4d7cc;border-radius:12px;overflow:hidden;background:#fffdf8;text-decoration:none}.quick-demos img{width:100%;height:auto;display:block}.quick-demos span{display:block;padding:12px;font-size:13px;line-height:1.5}.device-grid img{cursor:zoom-in}@media(max-width:500px){.quick-demos{grid-template-columns:1fr}.quick-demos a{display:flex;align-items:center}.quick-demos img{width:45%}.quick-demos span{flex:1}}
/* Constrain WebKit's invisible native select, including its intrinsic option width. */
header .language-picker{overflow:hidden}header .language-select{min-width:0;max-width:100%}