.mk-landing {
  --ink: #191b20; --muted: #4d525c; --red: #c81820; --line: #e1e3e8;
  --soft: #f5f6f8; --blue: #176ab0;
  --heading: "Barlow Semi Condensed", "Barlow", Arial, sans-serif;
  color: var(--ink); background: #fff; clear: both; width: 100%; font: 400 17px/1.58 "Barlow", Arial, sans-serif;
}
.mk-landing * { box-sizing: border-box; }
.mk-landing figure, .mk-landing dl, .mk-landing dd { margin: 0; }
.mk-landing img { display: block; max-width: 100%; height: auto; }
.mk-landing a { color: inherit; text-underline-offset: .2em; }
.mk-landing button { font: inherit; cursor: pointer; }
.mk-landing a:focus-visible, .mk-landing button:focus-visible, .mk-landing summary:focus-visible { outline: 3px solid var(--blue); outline-offset: 4px; }
.mk-landing section[id], .mk-landing .details-grid [id] { scroll-margin-top: 76px; }
.mk-landing .wrap { width: min(1160px, calc(100% - 64px)); margin-inline: auto; }
.mk-landing svg.symbols { position: absolute; width: 0; height: 0; overflow: hidden; }

.mk-landing .hero { background: #f1f2f7; border-bottom: 1px solid var(--line); }
.mk-landing .crumb { display: flex; gap: 9px; flex-wrap: wrap; padding-top: 16px; color: var(--muted); font-size: 14px; }
.mk-landing .crumb a { text-decoration: none; }
.mk-landing .crumb [aria-current] { color: var(--ink); font-weight: 600; }
.mk-landing .hero-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); align-items: center; gap: 38px; }
.mk-landing .hero-copy { padding-block: 44px 34px; }
.mk-landing .eyebrow { margin: 0 0 10px; color: var(--red); font: 700 15px/1.2 var(--heading); letter-spacing: .13em; text-transform: uppercase; }
.mk-landing h1, .mk-landing h2, .mk-landing h3 { font-family: var(--heading); line-height: 1.07; margin: 0; }
.mk-landing h1 { font-size: clamp(64px, 8.5vw, 116px); font-weight: 800; letter-spacing: -.045em; }
.mk-landing h2 { font-size: clamp(35px, 4vw, 54px); letter-spacing: -.022em; font-weight: 700; }
.mk-landing .hero-lead { margin: 15px 0 10px; max-width: 24ch; font: 600 clamp(26px,3vw,37px)/1.14 var(--heading); }
.mk-landing .hero-copy > p:last-of-type { margin: 0; max-width: 47ch; color: var(--muted); }
.mk-landing .hero-picture { position: relative; justify-self: center; width: min(100%,520px); }
.mk-landing .hero-picture img { mix-blend-mode: multiply; }
.mk-landing .hero-picture figcaption { position: absolute; bottom: 3%; right: 0; font-size: 14px; color: var(--muted); }
.mk-landing .hero-picture figcaption span { display: inline-block; width: 7px; height: 7px; margin-right: 3px; background: var(--red); border-radius: 50%; }
.mk-landing .actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 25px; }
.mk-landing .button { display: inline-flex; min-height: 47px; padding: 11px 16px; align-items: center; justify-content: center; gap: 9px; border: 1px solid transparent; border-radius: 4px; text-decoration: none; font-weight: 700; line-height: 1.15; }
.mk-landing .button svg, .mk-landing .gallery-photo svg { width: 20px; height: 20px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.75; }
.mk-landing .primary { background: var(--red); color: #fff; }
.mk-landing .primary:hover { background: #a61119; }
.mk-landing .secondary { background: #fff; border-color: #c4c7ce; color: var(--ink); }
.mk-landing .secondary:hover { border-color: var(--ink); }
.mk-landing .outline { border-color: #74767c; color: #fff; }
.mk-landing .metrics { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); border-top: 1px solid #d7dae2; }
.mk-landing .metrics div { padding: 17px 21px 18px; }
.mk-landing .metrics div:first-child { padding-left: 0; }
.mk-landing .metrics div + div { border-left: 1px solid #d7dae2; }
.mk-landing .metrics dt { font: 700 clamp(23px,3vw,35px)/1.12 var(--heading); }
.mk-landing .metrics dd { margin-top: 3px; color: var(--muted); font-size: 15px; }
.mk-landing .jump { position: sticky; top: 0; z-index: 2; background: #fff; border-bottom: 1px solid var(--line); }
.mk-landing .jump nav { display: flex; gap: 28px; min-height: 53px; align-items: center; overflow: auto; }
.mk-landing .jump a { white-space: nowrap; font: 700 17px/1.25 var(--heading); text-decoration: none; }
.mk-landing .jump a:hover { color: var(--red); }
.mk-landing .jump a:focus-visible { outline-offset: -2px; }
.mk-landing .section { padding-block: clamp(47px,7vw,90px); }
.mk-landing .section .intro { color: var(--muted); max-width: 68ch; margin: 13px 0 24px; }
.mk-landing .band { background: var(--soft); border-block: 1px solid var(--line); }
.mk-landing .diagram { margin-top: 28px; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: #fff; }
.mk-landing .diagram-bar { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; padding: 14px 19px; background: var(--soft); border-bottom: 1px solid var(--line); }
.mk-landing .flow-switch, .mk-landing .diagram-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.mk-landing .flow-switch button, .mk-landing .diagram-actions button { color: var(--ink); border: 1px solid #cdd0d7; border-radius: 4px; background: #fff; min-height: 40px; padding: 6px 11px; font-weight: 600; font-size: 15px; }
.mk-landing .flow-switch [aria-pressed="true"] { background: #222733; color: #fff; border-color: #222733; }
.mk-landing #pause { background: transparent; }
.mk-landing #zoom-diagram { display: none; }
.mk-landing .drawing-scroll { overflow: auto; background: #fff; }
.mk-landing .drawing-scroll:focus-visible { outline: 2px solid var(--blue); outline-offset: -3px; }
.mk-landing .drawing-stage { position: relative; width: 100%; }
.mk-landing .drawing-stage img { width: 100%; }
.mk-landing .drawing-overlay { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.mk-landing .flow { fill: none; stroke-width: 5.5; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 8 25; stroke-dashoffset: 0; animation: mk-circulate 1.1s linear infinite; }
.mk-landing .flow.cold { stroke: #006bbb; }
.mk-landing .flow.warm { stroke: #e22712; }
.mk-landing .flow.supply { stroke: #a71311; }
.mk-landing .flow.circulation { stroke: #c01479; }
.mk-landing .flow.return-flow { stroke: #d45614; }
@keyframes mk-circulate { to { stroke-dashoffset: -33; } }
.mk-landing .diagram[data-paused="true"] .flow { animation-play-state: paused; }
.mk-landing .diagram[data-flow="water"] .room-paths, .mk-landing .diagram[data-flow="heat"] .water-paths { visibility: hidden; }
.mk-landing .diagram[data-flow="water"] .room-paths .flow, .mk-landing .diagram[data-flow="heat"] .water-paths .flow { animation-play-state: paused; }
.mk-landing .zoom-hint { margin: 0; padding: 7px 13px; background: var(--soft); font-size: 14px; }
.mk-landing .diagram-note { border-top: 1px solid var(--line); margin: 0; padding: 13px 19px; font-size: 15px; }
.mk-landing .caption { color: var(--muted); font-size: 14px; margin-top: 12px; }
.mk-landing .video-grid, .mk-landing .details-grid, .mk-landing .faq-grid { display: grid; gap: clamp(24px,6vw,76px); grid-template-columns: minmax(0,1fr) minmax(0,1fr); align-items: start; }
.mk-landing .video-grid { padding-top: 0; align-items: center; }
.mk-landing .video-chapters { list-style: none; margin: 0; padding: 0; }
.mk-landing .video-chapters li + li { margin-top: 8px; }
.mk-landing .video-chapters a { display: inline-flex; align-items: baseline; gap: 10px; font-weight: 600; }
.mk-landing .video-chapters span { color: var(--red); font-variant-numeric: tabular-nums; }
.mk-landing .video-frame { aspect-ratio: 16/9; overflow: hidden; background: #f1f2f7; border-radius: 8px; }
.mk-landing .video-frame iframe { border: 0; width: 100%; height: 100%; display: block; }
.mk-landing .video-frame button { position: relative; display: block; width: 100%; height: 100%; border: 0; background: transparent; padding: 0; color: #fff; }
.mk-landing .video-frame button img { width: 100%; height: 100%; object-fit: contain; }
.mk-landing .play-icon { position: absolute; inset: 50% auto auto 50%; transform: translate(-50%,-50%); display: grid; place-items: center; width: 58px; height: 58px; border-radius: 50%; background: var(--red); padding-left: 3px; }
.mk-landing .play-label { position: absolute; bottom: 9px; left: 9px; background: #24262d; padding: 3px 7px; border-radius: 3px; font-size: 13px; }
.mk-landing .gallery { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 14px; margin-top: 26px; }
.mk-landing .gallery-photo { border: 1px solid var(--line); border-radius: 7px; overflow: hidden; text-decoration: none; background: #fff; }
.mk-landing .gallery-photo img { width: 100%; }
.mk-landing .gallery-photo span { display: flex; justify-content: space-between; align-items: center; gap: 6px; padding: 11px 12px; font-weight: 600; line-height: 1.2; }
.mk-landing .gallery-photo:hover { border-color: #a4a9b4; }
.mk-landing table { width: 100%; border-collapse: collapse; margin-top: 23px; font-size: 16px; }
.mk-landing th, .mk-landing td { border-bottom: 1px solid var(--line); padding: 11px; text-align: left; vertical-align: top; }
.mk-landing th { font-weight: 600; width: 45%; }
.mk-landing tr:nth-child(odd) { background: var(--soft); }
.mk-landing .package { list-style: none; padding: 0; margin: 18px 0; counter-reset: pieces; }
.mk-landing .package li { counter-increment: pieces; position: relative; padding: 10px 0 10px 43px; border-bottom: 1px solid var(--line); }
.mk-landing .package li::before { content: counter(pieces, decimal-leading-zero); position: absolute; left: 0; top: 12px; color: var(--red); font: 700 16px/1.25 var(--heading); }
.mk-landing .package strong, .mk-landing .package span { display: block; }
.mk-landing .package span { color: var(--muted); }
.mk-landing .faq-grid { grid-template-columns: minmax(0,1fr) minmax(0,1.6fr); }
.mk-landing .faq details { border-bottom: 1px solid #cfd2d9; }
.mk-landing .faq summary { padding: 13px 0; cursor: pointer; font-weight: 700; }
.mk-landing .faq p { margin: 0 0 15px; color: var(--muted); }
.mk-landing .contact { background: #22242a; color: #fff; padding: 42px 0; }
.mk-landing .contact-inner { display: flex; gap: 22px; align-items: center; justify-content: space-between; }
.mk-landing .contact h2 { font-size: clamp(31px,4vw,44px); }
.mk-landing .contact .eyebrow { color: #ffa1a4; }
.mk-landing .contact p:last-child { margin: 9px 0 0; color: #e0e2e8; }
.mk-landing .contact .actions { flex-shrink: 0; margin-top: 0; }
.mk-landing dialog { border: 0; padding: 10px; border-radius: 8px; width: min(90vw,72vh,680px); color: var(--ink); }
.mk-landing dialog::backdrop { background: #111b; }
.mk-landing dialog img { width: 100%; }
.mk-landing dialog p { margin: 5px 0 0; text-align: center; }
.mk-landing .photo-close { position: absolute; top: 13px; right: 13px; min-width: 42px; min-height: 42px; border: 1px solid var(--line); border-radius: 50%; background: #fff; font-size: 23px; line-height: 1; }
@media(max-width: 800px) {
  .mk-landing .wrap { width: calc(100% - 36px); }

  .mk-landing #zoom-diagram { display: inline-block; }
  .mk-landing .diagram[data-zoom="true"] .drawing-stage { min-width: 860px; }
  .mk-landing .hero-grid { gap: 12px; }
  .mk-landing .hero-copy { padding-block: 30px 24px; }
  .mk-landing .contact-inner { flex-direction: column; align-items: flex-start; }
}
@media(max-width: 610px) {
  .mk-landing .wrap { width: calc(100% - 28px); }

  .mk-landing .hero-grid, .mk-landing .details-grid, .mk-landing .faq-grid, .mk-landing .video-grid { grid-template-columns: 1fr; }
  .mk-landing .hero-copy { padding-bottom: 3px; }
  .mk-landing h1 { font-size: clamp(53px,13vw,74px); }
  .mk-landing .hero-picture { width: min(90%,360px); }
  .mk-landing .metrics div { padding-inline: 9px; }
  .mk-landing .metrics dt { font-size: clamp(18px,5vw,23px); }
  .mk-landing .metrics dd { font-size: 13px; line-height: 1.2; }
  .mk-landing .jump nav { gap: 18px; min-height: 46px; }
  .mk-landing .jump a { font-size: 15px; }
  .mk-landing .diagram-bar { padding: 9px; }
  .mk-landing .flow-switch button, .mk-landing .diagram-actions button { padding-inline: 7px; min-height: 38px; font-size: 13px; }
  .mk-landing .gallery { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 9px; }
  .mk-landing .contact .actions { flex-shrink: 1; }
}
@media(prefers-reduced-motion: reduce) {
  .mk-landing .flow { animation: none; }
}
.mk-landing .button.primary, .mk-landing .button.outline { color: #fff; }
.mk-landing .button.secondary { color: var(--ink); }
.mk-landing .video-chapters a, .mk-landing .caption a { text-decoration: underline; }
.mk-landing .caption a:hover, .mk-landing .video-chapters a:hover { color: var(--red); }
.mk-landing dialog:not([open]) { display: none; }