.main-nav .nav-active {
  background: var(--black);
  color: var(--paper-2);
  border-color: var(--black);
}

.lego-intro {
  display: grid;
  grid-template-columns: minmax(0,.9fr) minmax(0,1.1fr);
  align-items: center;
  gap: clamp(40px,7vw,110px);
  background:
    radial-gradient(circle at 78% 20%, rgba(217,53,43,.07), transparent 26%),
    var(--paper);
}

.lego-intro-copy { min-width: 0; max-width: 680px; }

.lego-title-heading {
  grid-template-columns: 70px 1fr;
  margin-bottom: 34px;
}

.lego-title-heading h1 {
  font-size: clamp(70px,8vw,126px);
  line-height: .8;
}

.lego-title-heading .lead { margin-top: 30px; }

.lego-body {
  max-width: 650px;
  line-height: 1.8;
  font-size: 15px;
}

.lego-media { min-width: 0; }

.lego-photo,
.comparison-media {
  aspect-ratio: 1 / 1;
	background: #aaa;
}

.image-placeholder {
  width: 100%;
  height: 100%;
  min-height: 320px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 8px;
  padding: 24px;
  text-align: center;
  background:
    linear-gradient(135deg, rgba(255,255,255,.42), rgba(255,255,255,0)),
    repeating-linear-gradient(0deg, rgba(0,0,0,.025) 0 1px, transparent 1px 7px),
    var(--paper-2);
}

.image-placeholder span {
  font-family: "VT323", monospace;
  font-size: clamp(38px,5vw,72px);
}

.image-placeholder small {
  max-width: 340px;
  color: var(--muted);
  line-height: 1.5;
}

.lego-extensions {
	background: var(--paper-2);
}

.upgrade-index {
  display: block;
  margin-bottom: 22px;
  color: var(--muted);
  font-size: 11px;
}

.upgrade-copy h3 {
  margin-bottom: 16px;
  font-size: 26px;
}

.upgrade-copy p {
  margin-bottom: 0;
  max-width: 580px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.lego-comparison {
  background:
    radial-gradient(circle at 18% 80%, rgba(0,199,217,.06), transparent 24%),
    var(--paper);
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px,4vw,54px);
}

.comparison-item { margin: 0; }

.comparison-label {
  width: max-content;
  margin-bottom: 10px;
  padding: 6px 10px;
  background: var(--black);
  color: var(--paper-2);
  font-family: "VT323", monospace;
  font-size: 24px;
}

.comparison-item figcaption {
  margin-top: 14px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.lego-lessons {
  min-height: calc(100svh - var(--footer-h));
  padding-bottom: 54px;
  background: var(--paper-2);
}

.lesson-grid {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	border: 1px solid var(--ink);
}


.lesson-grid article {
	min-height: 0;
	padding: 28px;
	border-right: 1px solid var(--ink);
	border-bottom: 1px solid var(--ink);
}

.lesson-grid article:nth-child(2n) {
	border-right: 0;
}

.lesson-grid article:nth-last-child(-n+2) {
	border-bottom: 0;
}

.lesson-grid article > span {
	display: block;
	margin-bottom: 34px;
	color: var(--muted);
	font-size: 11px;
}

.lesson-grid h3 {
	margin-bottom: 20px;
	font-size: 26px;
}

.lesson-grid p {
	margin: 0 0 16px;
	color: var(--muted);
	font-size: 13px;
	line-height: 1.75;
}

.lesson-grid p:last-child {
	margin-bottom: 0;
}

.lesson-grid a {
	color: var(--ink);
	text-decoration: underline;
	text-decoration-thickness: 1px;
	text-underline-offset: 3px;
}

.lesson-grid a:hover,
.lesson-grid a:focus-visible {
	color: var(--cyan);
}

.lego-next { margin-top: 48px; }

@media (max-width: 900px) {
  .lego-intro {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .lego-intro-copy { max-width: none; }
  .lego-media { max-width: 760px; }

  .upgrade-grid,
  .comparison-grid {
    grid-template-columns: 1fr;
  }

  .lesson-grid {
    grid-template-columns: 1fr 1fr;
  }

  .lesson-grid article {
    border-bottom: 1px solid var(--ink);
  }

  .lesson-grid article:nth-child(2n) { border-right: 0; }
  .lesson-grid article:nth-last-child(-n+2) { border-bottom: 0; }
  .lego-lessons { min-height: auto; }
}

@media (max-width: 620px) {
  .lego-title-heading {
    grid-template-columns: 44px minmax(0,1fr);
    gap: 12px;
  }

  .lego-title-heading h1 {
    font-size: clamp(54px,18vw,76px);
  }

  .lego-title-heading .lead { margin-top: 22px; }
  .lego-body { font-size: 14px; }

  .image-placeholder { min-height: 220px; }

  .upgrade-copy { padding: 18px; }

  .lesson-grid { grid-template-columns: 1fr; }

  .lesson-grid article,
  .lesson-grid article:nth-child(2n),
  .lesson-grid article:nth-last-child(-n+2) {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--ink);
  }

  .lesson-grid article:last-child { border-bottom: 0; }
  .lesson-grid article > span { margin-bottom: 28px; }
}

.set-facts {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	margin-top: 18px;
	border: 1px solid var(--ink);
	background: var(--paper-2);
}

.set-facts span {
	min-height: 82px;
	padding: 14px 16px;
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	gap: 8px;

	border-right: 1px solid rgba(21,21,21,.22);
	border-bottom: 1px solid rgba(21,21,21,.22);

	color: var(--muted);
	font-size: 11px;
	text-transform: uppercase;
	letter-spacing: .08em;
}

.set-facts span:nth-child(2n) {
	border-right: 0;
}

.set-facts span:nth-last-child(-n+2) {
	border-bottom: 0;
}

.set-facts strong {
	color: var(--ink);
	font-family: "VT323", monospace;
	font-size: 28px;
	font-weight: 400;
	line-height: 1;
	letter-spacing: 0;
	text-transform: none;
}

/* Allgemeine Unterbereiche */

.extension-block {
	padding-top: 54px;
	margin-top: 54px;
	border-top: 1px solid rgba(21,21,21,.28);
}

.extension-block:first-of-type {
	margin-top: 0;
}

.extension-copy p,
.monitor-intro p {
	margin: 0 0 18px;
	color: var(--muted);
	font-size: 14px;
	line-height: 1.8;
}

.upgrade-index {
	display: block;
	margin-bottom: 18px;
	color: var(--muted);
	font-size: 11px;
	letter-spacing: .08em;
}

.extension-block h3 {
	margin-bottom: 24px;
	font-size: clamp(30px, 3vw, 46px);
}


/* Lautsprecher */

.speaker-block {
	display: block;
}

.speaker-copy {
	max-width: 1000px;
	margin-bottom: 36px;
}


.speaker-gallery {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 18px;
}

.speaker-gallery .extension-media {
	aspect-ratio: 4 / 3;
}


.extension-image,
.monitor-step {
	margin: 0;
}

.extension-media {
	aspect-ratio: 4 / 3;
}

.monitor-gallery .monitor-media {
	aspect-ratio: 1 / 1;
}

.extension-image figcaption,
.monitor-step figcaption {
	margin-top: 12px;
	color: var(--muted);
	font-size: 11px;
	line-height: 1.55;
}


/* Monitor */

.monitor-block {
	display: block;
}

.monitor-copy {
	max-width: 1000px;
	margin-bottom: 36px;
}


.monitor-heading {
	max-width: 900px;
	margin-bottom: 28px;
}

.monitor-intro {
	max-width: 1000px;
	display: grid;
	grid-template-columns: 1fr 1fr;
	column-gap: 48px;
	margin-bottom: 48px;
}

.monitor-intro p {
	break-inside: avoid;
}


/* Bildfolge */

.monitor-gallery {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 18px;
}

.monitor-media {
	aspect-ratio: 1 / 1;
	width: 100%;
	overflow: hidden;
	display: flex;
	align-items: center;
	justify-content: center;
	background: #111;
}

.monitor-image {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: contain;
}

.monitor-step {
	position: relative;
}

.monitor-step-wide {
	grid-column: 1 / -1;
}

.monitor-step-wide .extension-media {
	aspect-ratio: 16 / 7;
}

.step-number {
	position: absolute;
	top: 12px;
	left: 12px;
	z-index: 2;

	min-width: 38px;
	height: 38px;

	display: grid;
	place-items: center;

	padding: 0 8px;

	background: var(--black);
	color: var(--paper-2);

	font-family: "VT323", monospace;
	font-size: 24px;

	box-shadow:
		-2px -2px 0 rgba(0,199,217,.55),
		2px 2px 0 rgba(238,46,145,.45);
}


/* Platzhalter */

.extension-media .image-placeholder {
	min-height: 0;
}


/* Tablet */

@media (max-width: 900px) {

	.speaker-block {
		grid-template-columns: 1fr;
	}

	.monitor-intro {
		grid-template-columns: 1fr;
	}

}


/* Mobile */

@media (max-width: 620px) {

	.extension-block {
		margin-top: 40px;
		padding-top: 40px;
	}

	.speaker-gallery,
	.monitor-gallery {
		grid-template-columns: 1fr;
	}

	.monitor-step-wide {
		grid-column: auto;
	}

	.monitor-step-wide .extension-media {
		aspect-ratio: 4 / 3;
	}

	.extension-block h3 {
		font-size: 30px;
	}

}

.speaker-image-wide {
	grid-column: 1 / -1;
}

.speaker-image-wide .extension-media {
	aspect-ratio: 16 / 8;
}

@media (max-width: 900px) {
	.speaker-gallery {
		grid-template-columns: 1fr;
	}
}

@media (max-width: 900px) {
	.monitor-gallery {
		grid-template-columns: 1fr;
	}
}


.lego-photo-image {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: contain;
	background: #aaa;
}

.extension-image-file {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.comparison-media {
	width: 100%;
	aspect-ratio: 4 / 3;
	max-height: 520px;
	overflow: hidden;
	display: flex;
	align-items: center;
	justify-content: center;
	background: #111;
}

.comparison-image {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: contain;
}