.trx-demo-playground { max-width: 920px; margin: 0 auto; }
.trx-demo-playground__toolbar { margin-bottom: 18px; }
.trx-demo-playground__label { margin: 0 0 10px; color: var(--trx-muted, #64748b); font-weight: 600; font-size: 14.5px; }
.trx-demo-playground__langs { display: flex; flex-wrap: wrap; gap: 8px; }
.trx-demo-playground__lang {
	border: 1px solid #d6dde9; background: #fff; border-radius: 999px; padding: 8px 16px;
	font: inherit; font-weight: 700; font-size: 14px; cursor: pointer; color: #334155;
	transition: border-color .15s ease, background .15s ease, color .15s ease;
}
.trx-demo-playground__lang.is-active {
	border-color: #6366f1; background: #eef2ff; color: #4338ca;
	box-shadow: 0 0 0 4px rgba(99,102,241,.12);
}
.trx-demo-playground__browser {
	border: 1px solid #e2e8f0; border-radius: 18px; overflow: hidden; background: #fff;
	box-shadow: 0 24px 48px rgba(15,23,42,.08);
}
.trx-demo-playground__chrome {
	display: flex; align-items: center; gap: 7px; padding: 12px 14px; background: #111827;
}
.trx-demo-playground__chrome span { width: 10px; height: 10px; border-radius: 50%; background: #475569; }
.trx-demo-playground__chrome span:nth-child(1) { background: #f87171; }
.trx-demo-playground__chrome span:nth-child(2) { background: #fbbf24; }
.trx-demo-playground__chrome span:nth-child(3) { background: #4ade80; }
.trx-demo-playground__url {
	margin-left: 10px; flex: 1; background: #1f2937; color: #cbd5e1; border-radius: 8px;
	padding: 6px 12px; font-size: 12.5px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.trx-demo-playground__body { padding: 28px 30px 32px; }
.trx-demo-playground__badge {
	display: inline-block; margin-bottom: 12px; padding: 5px 12px; border-radius: 999px;
	background: #eff6ff; color: #1d4ed8; font-size: 12.5px; font-weight: 700;
}
.trx-demo-playground__title { margin: 0 0 14px; font-size: clamp(24px, 3vw, 32px); color: #0b1220; }
.trx-demo-playground__text { margin: 0 0 14px; color: #475569; font-size: 16.5px; line-height: 1.65; }
.trx-demo-playground__text[contenteditable="true"]:focus,
.trx-demo-playground__title[contenteditable="true"]:focus {
	outline: 2px solid #c7d2fe; background: #f8fafc; border-radius: 8px;
}
.trx-demo-playground__hint { margin: 14px 0 0; color: #64748b; font-size: 14px; text-align: center; }