/* Install Engineering redesign prototype.
   Two voices in one system:
   - Install: navy engineering sections, the 3D building, drawing callouts, the tri-colour logo (green, blue, red).
   - Samsung Climate Solutions (sponsor): clean white and light-grey product surfaces, rounded cards, pill buttons in Samsung blue.
   Rule of thumb: containers and buttons are round (Samsung); drawings, tables and data are crisp (Install). */

@font-face {
  font-family: "Instrument Sans";
  src: url(../fonts/instrument-sans.woff2) format("woff2");
  font-weight: 400 700;
  font-stretch: 75% 100%;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Install navy */
  --night: #050b16;
  --night-2: #0a1628;
  --navy: #0c1e3c;
  --navy-3: #142b52;
  /* Install logo colours, and the same three as signals for heating, cooling and air */
  --logo-green: #94cb42;
  --logo-blue: #24518d;
  --logo-red: #ea1b20;
  --heat: #e8483d;
  --cool: #2f6fe0;
  --air: #7fb53a;
  /* Samsung: action blue, near-black, product greys */
  --sam-blue: #1428a0;
  --sam-blue-hover: #0f1f80;
  --black: #0b0d12;
  --grey: #f4f4f4;
  --grey-2: #ebedf0;
  /* text and lines */
  --ink: #121a26;
  --steel: #586579;
  --line: #d9dee5;
  --white: #fff;
  --on-dark: #f2f5f9;
  --on-dark-2: #a9b6c7;
  --rule-dark: rgba(255, 255, 255, .12);
  /* light for the 3D, glows and focus on dark */
  --electric: #3d8bff;
  --electric-soft: #6fa6ff;
  --danger: #b42318;

  --font: "Instrument Sans", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --wrap: 1320px;
  --gutter: clamp(20px, 5vw, 64px);
  --sec: clamp(88px, 11vw, 160px);
  --head-h: 76px;
  --r-card: 24px;
  --r-media: 16px;
  --r-field: 12px;
  --ease: cubic-bezier(.2, .7, .2, 1);
  --ease-in-out: cubic-bezier(.65, 0, .35, 1);
  --tri: linear-gradient(90deg, var(--logo-green) 0 33.34%, var(--logo-blue) 33.34% 66.67%, var(--logo-red) 66.67% 100%);
  /* The hero backdrop: navy with a soft glow where the building stands (kept in step with poster.html). */
  --stage: radial-gradient(ellipse 60% 70% at 70% 52%, #10284c 0%, #0a1a31 45%, #07111f 78%);
  --stage-tall: radial-gradient(ellipse 90% 50% at 50% 36%, #10284c 0%, #0a1a31 50%, #07111f 85%);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--head-h) + 16px); }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  margin: 0;
  font: 400 1.0625rem/1.6 var(--font);
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  font-kerning: normal;
  font-feature-settings: "kern", "liga";
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .2em; }
h1, h2, h3, h4, p, dl, dd, figure, blockquote, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
table { border-collapse: collapse; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--sam-blue); outline-offset: 3px; }
.projects :focus-visible, .contact__intro :focus-visible, .site-foot :focus-visible, .hero :focus-visible,
.site-head:not(.is-solid) :focus-visible, .menu :focus-visible { outline-color: var(--electric-soft); }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: 16px; top: -60px; z-index: 200; padding: 12px 18px; background: var(--white); color: var(--navy); font-weight: 600; border-radius: 999px; }
.skip-link:focus { top: 16px; }

.wrap { width: 100%; max-width: calc(var(--wrap) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter); }
.sec { padding-block: var(--sec); }

/* Samsung wordmark (partner lockup). It follows the text colour. */
.sam-mark { display: inline-block; width: 84px; height: 13px; flex: none; background: currentColor; -webkit-mask: url("data:image/svg+xml,%3Csvg width='7051.4023' height='1080' viewBox='0 0 7051.4024 1080' xmlns='http://www.w3.org/2000/svg'%3E%3Cdefs%3E%3CclipPath clipPathUnits='userSpaceOnUse' id='c'%3E%3Cpath d='M 0,166.885 H 628.238 V 0 H 0 Z'%3E%3C/path%3E%3C/clipPath%3E%3C/defs%3E%3Cg transform='matrix(12.944053,0,0,-12.944053,-540.03625,1620.0233)'%3E%3Cg%3E%3Cg clip-path='url(%23c)'%3E%3Cg transform='translate(558.9328,88.5098)'%3E%3Cpath d='m 0,0 v -11.358 h 7.982 v -11.269 c 0.025,-1.007 -0.03,-2.093 -0.203,-2.962 -0.317,-2.102 -2.314,-5.681 -7.98,-5.681 -5.632,0 -7.593,3.579 -7.933,5.681 -0.143,0.869 -0.204,1.955 -0.204,2.962 v 35.593 c 0,1.259 0.085,2.637 0.352,3.68 0.387,1.897 2.068,5.638 7.743,5.638 5.957,0 7.444,-3.944 7.785,-5.638 0.224,-1.122 0.237,-3.004 0.237,-3.004 V 9.32 h 19.613 v 2.555 c 0,0 0.089,2.666 -0.149,5.154 C 25.769,31.638 13.732,36.26 -0.07,36.26 c -13.827,0 -25.62,-4.665 -27.338,-19.231 -0.155,-1.332 -0.392,-3.728 -0.392,-5.154 v -32.742 c 0,-1.426 0.046,-2.53 0.31,-5.136 1.28,-14.207 13.593,-19.243 27.365,-19.243 13.857,0 26.085,5.036 27.387,19.243 0.231,2.606 0.255,3.71 0.286,5.136 V 0 Z m -135.235,34.165 h -19.696 v -57.613 c 0.031,-1.004 0,-2.132 -0.173,-2.959 -0.411,-1.934 -2.05,-5.656 -7.484,-5.656 -5.364,0 -7.046,3.722 -7.426,5.656 -0.197,0.827 -0.222,1.955 -0.197,2.959 v 57.613 h -19.69 V -21.66 c -0.025,-1.439 0.088,-4.379 0.173,-5.149 1.359,-14.547 12.824,-19.27 27.14,-19.27 14.344,0 25.802,4.723 27.186,19.27 0.109,0.77 0.252,3.71 0.167,5.149 z m -180.97,0 -9.825,-60.876 -9.819,60.876 h -31.771 l -1.685,-77.878 h 19.464 l 0.527,72.094 13.392,-72.094 h 19.748 l 13.404,72.094 0.529,-72.094 h 19.513 l -1.742,77.878 z m -117.631,0 -14.426,-77.878 h 21.037 l 10.871,72.094 10.61,-72.094 h 20.891 l -14.366,77.878 z m 367.435,-62.701 -18.34,62.701 h -28.9 v -77.066 h 19.118 l -1.11,64.707 19.696,-64.707 h 27.717 v 77.066 h -19.243 z m -176.838,42.433 c -0.346,1.538 -0.246,3.172 -0.067,4.026 0.557,2.493 2.232,5.212 7.058,5.212 4.498,0 7.135,-2.804 7.135,-7.012 v -4.762 h 19.2 v 5.428 c 0,16.78 -15.044,19.416 -25.936,19.416 -13.718,0 -24.921,-4.522 -26.967,-17.148 -0.541,-3.436 -0.675,-6.486 0.186,-10.378 3.336,-15.743 30.743,-20.31 34.721,-30.266 0.702,-1.886 0.501,-4.291 0.143,-5.708 -0.596,-2.591 -2.339,-5.197 -7.506,-5.197 -4.846,0 -7.763,2.786 -7.763,6.985 l -0.006,7.474 h -20.666 v -5.941 c 0,-17.215 13.484,-22.409 28.007,-22.409 13.909,0 25.397,4.753 27.24,17.637 0.879,6.657 0.216,10.993 -0.137,12.626 -3.22,16.147 -32.431,21.004 -34.642,30.017 m -253.273,0.191 c -0.377,1.57 -0.289,3.227 -0.079,4.091 0.532,2.481 2.217,5.248 7.128,5.248 4.555,0 7.237,-2.831 7.237,-7.073 v -4.82 h 19.425 v 5.471 c 0,16.941 -15.274,19.641 -26.285,19.641 -13.833,0 -25.136,-4.592 -27.204,-17.309 -0.566,-3.491 -0.663,-6.562 0.155,-10.497 3.372,-15.922 31.05,-20.526 35.077,-30.601 0.754,-1.873 0.526,-4.278 0.152,-5.75 -0.639,-2.618 -2.396,-5.261 -7.606,-5.261 -4.865,0 -7.775,2.834 -7.775,7.091 l -0.027,7.494 h -20.898 v -5.955 c 0,-17.412 13.675,-22.648 28.311,-22.648 14.071,0 25.626,4.795 27.511,17.828 0.937,6.718 0.234,11.09 -0.082,12.748 -3.287,16.345 -32.823,21.186 -35.04,30.302' style='fill:%231428a0;fill-opacity:1;fill-rule:nonzero;stroke:none'%3E%3C/path%3E%3C/g%3E%3C/g%3E%3C/g%3E%3C/g%3E%3C/svg%3E") center / contain no-repeat; mask: url("data:image/svg+xml,%3Csvg width='7051.4023' height='1080' viewBox='0 0 7051.4024 1080' xmlns='http://www.w3.org/2000/svg'%3E%3Cdefs%3E%3CclipPath clipPathUnits='userSpaceOnUse' id='c'%3E%3Cpath d='M 0,166.885 H 628.238 V 0 H 0 Z'%3E%3C/path%3E%3C/clipPath%3E%3C/defs%3E%3Cg transform='matrix(12.944053,0,0,-12.944053,-540.03625,1620.0233)'%3E%3Cg%3E%3Cg clip-path='url(%23c)'%3E%3Cg transform='translate(558.9328,88.5098)'%3E%3Cpath d='m 0,0 v -11.358 h 7.982 v -11.269 c 0.025,-1.007 -0.03,-2.093 -0.203,-2.962 -0.317,-2.102 -2.314,-5.681 -7.98,-5.681 -5.632,0 -7.593,3.579 -7.933,5.681 -0.143,0.869 -0.204,1.955 -0.204,2.962 v 35.593 c 0,1.259 0.085,2.637 0.352,3.68 0.387,1.897 2.068,5.638 7.743,5.638 5.957,0 7.444,-3.944 7.785,-5.638 0.224,-1.122 0.237,-3.004 0.237,-3.004 V 9.32 h 19.613 v 2.555 c 0,0 0.089,2.666 -0.149,5.154 C 25.769,31.638 13.732,36.26 -0.07,36.26 c -13.827,0 -25.62,-4.665 -27.338,-19.231 -0.155,-1.332 -0.392,-3.728 -0.392,-5.154 v -32.742 c 0,-1.426 0.046,-2.53 0.31,-5.136 1.28,-14.207 13.593,-19.243 27.365,-19.243 13.857,0 26.085,5.036 27.387,19.243 0.231,2.606 0.255,3.71 0.286,5.136 V 0 Z m -135.235,34.165 h -19.696 v -57.613 c 0.031,-1.004 0,-2.132 -0.173,-2.959 -0.411,-1.934 -2.05,-5.656 -7.484,-5.656 -5.364,0 -7.046,3.722 -7.426,5.656 -0.197,0.827 -0.222,1.955 -0.197,2.959 v 57.613 h -19.69 V -21.66 c -0.025,-1.439 0.088,-4.379 0.173,-5.149 1.359,-14.547 12.824,-19.27 27.14,-19.27 14.344,0 25.802,4.723 27.186,19.27 0.109,0.77 0.252,3.71 0.167,5.149 z m -180.97,0 -9.825,-60.876 -9.819,60.876 h -31.771 l -1.685,-77.878 h 19.464 l 0.527,72.094 13.392,-72.094 h 19.748 l 13.404,72.094 0.529,-72.094 h 19.513 l -1.742,77.878 z m -117.631,0 -14.426,-77.878 h 21.037 l 10.871,72.094 10.61,-72.094 h 20.891 l -14.366,77.878 z m 367.435,-62.701 -18.34,62.701 h -28.9 v -77.066 h 19.118 l -1.11,64.707 19.696,-64.707 h 27.717 v 77.066 h -19.243 z m -176.838,42.433 c -0.346,1.538 -0.246,3.172 -0.067,4.026 0.557,2.493 2.232,5.212 7.058,5.212 4.498,0 7.135,-2.804 7.135,-7.012 v -4.762 h 19.2 v 5.428 c 0,16.78 -15.044,19.416 -25.936,19.416 -13.718,0 -24.921,-4.522 -26.967,-17.148 -0.541,-3.436 -0.675,-6.486 0.186,-10.378 3.336,-15.743 30.743,-20.31 34.721,-30.266 0.702,-1.886 0.501,-4.291 0.143,-5.708 -0.596,-2.591 -2.339,-5.197 -7.506,-5.197 -4.846,0 -7.763,2.786 -7.763,6.985 l -0.006,7.474 h -20.666 v -5.941 c 0,-17.215 13.484,-22.409 28.007,-22.409 13.909,0 25.397,4.753 27.24,17.637 0.879,6.657 0.216,10.993 -0.137,12.626 -3.22,16.147 -32.431,21.004 -34.642,30.017 m -253.273,0.191 c -0.377,1.57 -0.289,3.227 -0.079,4.091 0.532,2.481 2.217,5.248 7.128,5.248 4.555,0 7.237,-2.831 7.237,-7.073 v -4.82 h 19.425 v 5.471 c 0,16.941 -15.274,19.641 -26.285,19.641 -13.833,0 -25.136,-4.592 -27.204,-17.309 -0.566,-3.491 -0.663,-6.562 0.155,-10.497 3.372,-15.922 31.05,-20.526 35.077,-30.601 0.754,-1.873 0.526,-4.278 0.152,-5.75 -0.639,-2.618 -2.396,-5.261 -7.606,-5.261 -4.865,0 -7.775,2.834 -7.775,7.091 l -0.027,7.494 h -20.898 v -5.955 c 0,-17.412 13.675,-22.648 28.311,-22.648 14.071,0 25.626,4.795 27.511,17.828 0.937,6.718 0.234,11.09 -0.082,12.748 -3.287,16.345 -32.823,21.186 -35.04,30.302' style='fill:%231428a0;fill-opacity:1;fill-rule:nonzero;stroke:none'%3E%3C/path%3E%3C/g%3E%3C/g%3E%3C/g%3E%3C/g%3E%3C/svg%3E") center / contain no-repeat; vertical-align: middle; }

/* ---------- type ---------- */
.h2 {
  font-size: clamp(2.25rem, 1.3rem + 3.6vw, 4.5rem);
  font-stretch: 80%;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.018em;
  color: var(--navy);
  text-wrap: balance;
}
.h4 { font-size: 1.0625rem; font-weight: 600; color: var(--navy); }
.lead { font-size: clamp(1.125rem, 1rem + .45vw, 1.3125rem); line-height: 1.55; color: var(--steel); max-width: 60ch; text-wrap: pretty; }
.sec-head { display: grid; gap: 24px; margin-bottom: clamp(48px, 6vw, 80px); max-width: 880px; }
.sec-head--split { max-width: none; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); align-items: end; gap: 24px clamp(32px, 5vw, 96px); }

/* ---------- buttons: pills, in the manner of Samsung's own ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 0 30px;
  border: 1.5px solid transparent; border-radius: 999px;
  font-weight: 600; font-size: 1rem; letter-spacing: .01em; text-decoration: none; white-space: nowrap;
  cursor: pointer;
  transition: background-color .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease), transform .25s var(--ease);
  touch-action: manipulation;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--sm { min-height: 44px; padding: 0 22px; font-size: .9375rem; }
.btn--primary { background: var(--sam-blue); color: #fff; box-shadow: 0 12px 26px -14px rgba(20, 40, 160, .75); }
.btn--primary:hover { background: var(--sam-blue-hover); box-shadow: 0 16px 32px -14px rgba(20, 40, 160, .85); }
.btn--dark { background: var(--black); color: #fff; }
.btn--dark:hover { background: #2a2f39; }
.btn--outline { border-color: var(--black); color: var(--black); }
.btn--outline:hover { background: var(--black); color: #fff; }
.btn--light { background: #fff; color: var(--black); box-shadow: 0 14px 30px -18px rgba(0, 0, 0, .6); }
.btn--light:hover { background: #e9edf3; }
.btn--glass { background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .3); color: #fff; -webkit-backdrop-filter: blur(12px) saturate(1.2); backdrop-filter: blur(12px) saturate(1.2); }
.btn--glass:hover { background: rgba(255, 255, 255, .16); border-color: #fff; }
.btn--outline-light { border-color: rgba(255, 255, 255, .4); color: #fff; }
.btn--outline-light:hover { background: #fff; border-color: #fff; color: var(--black); }

/* ---------- header: Install logo with the Samsung Climate Solutions partner lockup ---------- */
.site-head { position: fixed; inset: 0 0 auto; z-index: 50; color: #fff; transition: background-color .35s var(--ease), color .35s var(--ease), box-shadow .35s var(--ease); }
.site-head::before { content: ""; position: absolute; inset: 0 0 -40px; background: linear-gradient(rgba(5, 11, 22, .6), rgba(5, 11, 22, 0)); pointer-events: none; transition: opacity .35s var(--ease); }
.site-head.is-solid { background: rgba(255, 255, 255, .94); -webkit-backdrop-filter: blur(16px) saturate(1.4); backdrop-filter: blur(16px) saturate(1.4); color: var(--black); box-shadow: 0 1px 0 rgba(12, 30, 60, .08), 0 10px 30px -20px rgba(12, 30, 60, .3); }
.site-head.is-solid::before { opacity: 0; }
.site-head__in { position: relative; display: flex; align-items: center; gap: 32px; height: var(--head-h); }
.site-head__brand { display: flex; flex: none; align-items: center; gap: 18px; margin-right: auto; }
.brand { display: block; padding: 8px 0; }
.brand__logo { width: 116px; height: 28px; }
.cobrand { display: flex; flex-direction: column; justify-content: center; gap: 3px; padding-left: 18px; border-left: 1px solid currentColor; border-left-color: rgba(127, 140, 160, .5); text-decoration: none; line-height: 1; }
.cobrand__t { font-size: .6875rem; font-weight: 600; letter-spacing: .04em; opacity: .85; }
.nav__list { display: flex; gap: clamp(18px, 2.2vw, 32px); }
.nav__list a { position: relative; display: block; padding: 10px 0; font-weight: 500; font-size: .9688rem; text-decoration: none; white-space: nowrap; }
.nav__list a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 4px; height: 1.5px; background: currentColor; transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease); }
.nav__list a:hover::after { transform: scaleX(1); }
.site-head__tools { display: flex; align-items: center; gap: 18px; }
.lang { display: flex; gap: 10px; font-size: .875rem; font-weight: 600; letter-spacing: .02em; }
.lang a { opacity: .7; text-decoration: none; padding: 10px 2px; }
.lang a:hover { opacity: 1; }
.lang span { padding: 10px 2px; border-bottom: 1.5px solid currentColor; }
.site-head__phone { font-weight: 600; font-size: .9375rem; text-decoration: none; font-variant-numeric: tabular-nums; white-space: nowrap; }
.site-head:not(.is-solid) .site-head__cta { background: #fff; color: var(--black); box-shadow: none; }
.site-head:not(.is-solid) .site-head__cta:hover { background: #e9edf3; }
.menu-btn { display: none; align-items: center; gap: 10px; min-height: 44px; padding: 0 4px; background: none; border: 0; cursor: pointer; font-weight: 600; }
.menu-btn__bars { position: relative; width: 20px; height: 10px; border-top: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; }
.menu { position: fixed; inset: 0; z-index: -1; background: var(--night); color: var(--on-dark); padding-top: calc(var(--head-h) + 24px); overflow-y: auto; }
.menu__list a { display: block; padding: 14px 0; font-size: 2rem; font-stretch: 82%; font-weight: 600; text-decoration: none; border-bottom: 1px solid var(--rule-dark); }
.menu__foot { display: grid; gap: 20px; padding-block: 32px 48px; justify-items: start; }
.menu__phone { font-size: 1.25rem; font-weight: 600; text-decoration: none; }
.lang--menu { font-size: 1rem; }
html.menu-open { overflow: hidden; }
html.menu-open .site-head { color: #fff; background: transparent; box-shadow: none; -webkit-backdrop-filter: none; backdrop-filter: none; }
html.menu-open .site-head::before { opacity: 0; }

/* Keep navigation usable when JavaScript is unavailable. */
@media (max-width: 1180px) {
  html.no-js .site-head { position: relative; background: var(--night); }
  html.no-js .site-head__in { height: auto; min-height: var(--head-h); flex-wrap: wrap; gap: 10px 20px; padding-block: 12px; }
  html.no-js .nav { display: block; order: 3; width: 100%; }
  html.no-js .nav__list { flex-wrap: wrap; gap: 4px 18px; }
  html.no-js .menu-btn { display: none; }
}

/* ---------- hero: the building is the visual ---------- */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: grid; grid-template-rows: 1fr auto; color: #fff; background: var(--night); overflow: hidden; isolation: isolate; }
.hero__stage { position: absolute; inset: 0; z-index: -2; background: var(--stage); }
/* The still is 16:9 with the building on the right: narrower screens crop its empty left side first. */
.hero__poster img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 88% 50%; transition: opacity 1.2s var(--ease); }
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; transition: opacity 1.2s var(--ease); }
.hero__stage.is-live .hero__canvas { opacity: 1; }
.hero__stage.is-live .hero__poster img { opacity: 0; }
.hero__shade { position: absolute; inset: 0; z-index: -1; pointer-events: none; background:
  linear-gradient(90deg, rgba(5, 11, 22, .9) 0%, rgba(5, 11, 22, .62) 32%, rgba(5, 11, 22, 0) 56%),
  linear-gradient(0deg, rgba(5, 11, 22, .85) 0%, rgba(5, 11, 22, 0) 26%); }
.hero__in { align-self: center; padding-top: calc(var(--head-h) + 40px); padding-bottom: 40px; }
.hero__title {
  max-width: 12ch;
  font-size: clamp(3.25rem, 1.5rem + 5.8vw, 7.5rem);
  font-stretch: 76%;
  font-weight: 600;
  line-height: .9;
  letter-spacing: -.025em;
  text-wrap: balance;
}
.hero__lead { max-width: 46ch; margin-top: clamp(20px, 2.4vw, 32px); font-size: clamp(1.0625rem, .98rem + .4vw, 1.25rem); line-height: 1.55; color: rgba(255, 255, 255, .86); }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: clamp(28px, 3vw, 40px); }
.hero__foot { padding-bottom: 28px; }
/* The title block carries the logo's three colours as a short signature on its rule. */
.titleblock { position: relative; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid rgba(255, 255, 255, .18); }
.titleblock::before { content: ""; position: absolute; left: 0; top: -1px; width: 96px; height: 2px; background: var(--tri); }
.titleblock > div { padding: 16px 24px 0 0; }
.titleblock > div + div { padding-left: 24px; border-left: 1px solid rgba(255, 255, 255, .18); }
.titleblock dt { font-size: .875rem; font-weight: 600; color: #fff; font-variant-numeric: tabular-nums; }
.titleblock dd { margin-top: 2px; font-size: .9375rem; color: rgba(255, 255, 255, .7); }

/* ---------- about ---------- */
.about__top { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: 48px clamp(40px, 6vw, 110px); align-items: end; }
.about__text { display: grid; gap: 28px; }
.figures { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; font-variant-numeric: tabular-nums; }
.figures > div { display: grid; align-content: space-between; gap: 18px; min-height: 160px; padding: 22px 24px; border-radius: 20px; background: var(--grey); }
.figures dt { font-size: .875rem; font-weight: 600; color: var(--steel); }
.figures dd { color: var(--steel); font-size: .9375rem; line-height: 1.4; }
.figures b { display: block; margin-bottom: 4px; font-size: clamp(2.25rem, 1.7rem + 1.6vw, 3.25rem); font-stretch: 78%; font-weight: 600; line-height: 1; letter-spacing: -.02em; color: var(--navy); }
.about__bottom { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 48px clamp(40px, 6vw, 120px); align-items: center; margin-top: clamp(72px, 9vw, 136px); }
.about--process .about__bottom { margin-top: 0; }
.about__process { display: grid; gap: 28px; }
.process { position: relative; display: grid; counter-reset: step; }
.process li { position: relative; padding: 0 0 30px 48px; counter-increment: step; }
.process li::before { content: counter(step); position: absolute; left: 0; top: 0; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; font-size: .8125rem; font-weight: 600; color: #fff; background: var(--navy); font-variant-numeric: tabular-nums; }
.process li::after { content: ""; position: absolute; left: 15px; top: 34px; bottom: 4px; width: 1px; background: var(--line); }
.process li:last-child { padding-bottom: 0; }
.process li:last-child::after { display: none; }
.process h4 { font-size: 1.125rem; font-weight: 600; color: var(--navy); }
.process p { margin-top: 4px; color: var(--steel); max-width: 46ch; }

/* ---------- annotated photographs (Install: crisp drawing callouts) ---------- */
.annot__frame { position: relative; overflow: hidden; border-radius: var(--r-card); background: var(--grey); }
.annot--square .annot__frame { aspect-ratio: 1 / 1; }
.annot__frame img { width: 100%; height: 100%; object-fit: cover; }
/* Each leader runs from a dot on the equipment to the edge of its label. The dark halo keeps the white lines
   readable over the light ceiling and floor as well as the dark boilers. */
.annot__lines { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible;
  filter: drop-shadow(0 0 1px rgba(5, 11, 22, .95)) drop-shadow(0 0 3px rgba(5, 11, 22, .6)); }
/* Solid lines. A pathLength dash "draw-in" breaks into dashes once vector-effect keeps the stroke at 2px, so the leaders fade in instead. */
.annot__lines path { fill: none; stroke: #fff; stroke-width: 2; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.annot__lines circle { fill: #fff; stroke: var(--electric); stroke-width: 3; vector-effect: non-scaling-stroke; }
.annot__labels li {
  position: absolute; left: var(--x); top: var(--y); transform: translate(0, -50%);
  padding: 6px 10px; max-width: 26ch;
  font-size: .8125rem; font-weight: 600; line-height: 1.3; color: #fff;
  background: rgba(5, 11, 22, .92); border-left: 2px solid var(--electric-soft);
  box-shadow: 0 6px 18px -6px rgba(5, 11, 22, .6);
}
/* Right-aligned labels end at --x; anchoring them from the right lets them use the room to their left instead of wrapping. */
.annot__labels li.is-right { left: auto; right: calc(100% - var(--x)); border-left: 0; border-right: 2px solid var(--electric-soft); }
.annot figcaption { margin-top: 14px; font-size: .9375rem; color: var(--steel); max-width: 70ch; }
.js .annot__lines path, .js .annot__lines circle, .js .annot__labels li { opacity: 0; }
.js .annot.is-in .annot__lines path { opacity: 1; transition: opacity .8s .2s var(--ease); }
.js .annot.is-in .annot__lines circle { opacity: 1; transition: opacity .3s .1s; }
.js .annot.is-in .annot__labels li { opacity: 1; transition: opacity .5s .9s var(--ease); }
.js .annot.is-in .annot__labels li:nth-child(2) { transition-delay: 1.05s; }
.js .annot.is-in .annot__labels li:nth-child(3) { transition-delay: 1.2s; }

/* ---------- Samsung Climate Solutions (Samsung voice: grey surface, white product cards) ---------- */
.samsung { background: var(--grey); }
.samsung__head { display: grid; gap: 22px; }
.partner-tag { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 12px; color: var(--black); font-size: .875rem; font-weight: 600; letter-spacing: .02em; }
.partner-tag .sam-mark { width: 98px; height: 15px; }
.partner-tag__role { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px 5px 8px; border-radius: 999px; background: var(--white); color: var(--sam-blue); letter-spacing: 0; }
.partner-tag__role svg { width: 18px; height: 18px; color: var(--sam-blue); }
.prods { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(16px, 2vw, 24px); }
.prod { display: grid; grid-template-rows: auto 1fr; overflow: hidden; border-radius: var(--r-card); background: var(--white); transition: box-shadow .4s var(--ease), transform .4s var(--ease); }
.prod:hover { box-shadow: 0 30px 60px -36px rgba(12, 30, 60, .35); transform: translateY(-3px); }
.prod__media { display: block; overflow: hidden; aspect-ratio: 6 / 5; background: var(--white); }
.prod__media img { width: 100%; height: 100%; object-fit: contain; transition: transform 1s var(--ease); }
.prod:hover .prod__media img { transform: scale(1.04); }
.prod__body { display: grid; align-content: start; gap: 10px; padding: 8px clamp(22px, 2.2vw, 32px) clamp(26px, 2.6vw, 36px); }
.prod__tag { justify-self: start; padding: 4px 12px; border-radius: 999px; background: var(--grey); font-size: .8125rem; font-weight: 600; color: var(--black); }
.prod__name { font-size: clamp(1.375rem, 1.15rem + .7vw, 1.75rem); font-stretch: 86%; font-weight: 600; line-height: 1.1; color: var(--black); }
.prod__name a { text-decoration: none; }
.prod__name a:hover { text-decoration: underline; }
.prod__sub { color: var(--steel); }
.prod__feats { display: grid; gap: 8px; margin: 10px 0 18px; padding-top: 16px; border-top: 1px solid var(--grey-2); }
.prod__feats li { display: grid; grid-template-columns: 20px 1fr; gap: 10px; font-size: .9688rem; line-height: 1.45; color: var(--ink); }
.prod__feats svg { width: 18px; height: 18px; margin-top: 2px; color: var(--sam-blue); }
.prod__feats sup { font-size: .65em; }
.prod .btn { justify-self: start; }
.samsung__foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px 40px; margin-top: 32px; }
.footnote { max-width: 72ch; font-size: .8125rem; color: var(--steel); }

/* ---------- solutions: bento grid ----------
   Desktop (3 columns): heating is the large 2x2 tile, cooling and air stack beside it,
   then hydronic + the light equipment tile, then a full-width commercial banner. */
.bento { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); grid-auto-rows: minmax(270px, auto); gap: clamp(12px, 1.4vw, 20px); }
.bento__tile { --sys: var(--navy); position: relative; isolation: isolate; display: flex; flex-direction: column; justify-content: flex-end; min-width: 0; overflow: hidden; border-radius: var(--r-card); background: var(--navy); color: #fff; }
.bento__tile[data-sys="heat"] { --sys: var(--heat); }
.bento__tile[data-sys="cool"] { --sys: var(--cool); }
.bento__tile[data-sys="air"] { --sys: var(--air); }
.bento__tile[data-sys="water"] { --sys: var(--electric-soft); }
.bento__tile[data-sys="plant"] { --sys: var(--electric-soft); }
.bento__tile[data-sys="parts"] { --sys: var(--sam-blue); }
.bento__tile--xl { grid-column: span 2; grid-row: span 2; }
.bento__tile--light { grid-column: span 2; }
.bento__tile--banner { grid-column: 1 / -1; }
.bento__img { position: absolute; inset: 0; z-index: -2; width: 100%; height: 100%; object-fit: cover; transition: transform .9s var(--ease); }
.bento__tile::before { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; background: linear-gradient(180deg, rgba(5, 11, 22, .15) 0%, rgba(5, 11, 22, .68) 30%, rgba(5, 11, 22, .94) 100%); }
.bento__tile--xl::before { background: linear-gradient(180deg, rgba(5, 11, 22, 0) 30%, rgba(5, 11, 22, .55) 60%, rgba(5, 11, 22, .92) 100%); }
.bento__credit { position: absolute; top: 14px; right: 14px; padding: 4px 10px; border-radius: 999px; background: rgba(5, 11, 22, .55); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); color: rgba(255, 255, 255, .86); font-size: .75rem; font-weight: 500; line-height: 1.4; }
.bento__body { display: grid; gap: 10px; padding: clamp(20px, 2vw, 30px); }
.bento__tile h3 { display: flex; align-items: center; gap: 12px; font-size: clamp(1.25rem, 1.05rem + .6vw, 1.625rem); font-stretch: 84%; font-weight: 600; line-height: 1.12; letter-spacing: -.01em; }
.bento__tile--xl h3 { font-size: clamp(1.75rem, 1.3rem + 1.5vw, 2.625rem); }
.bento__tile h3::before { content: ""; flex: none; width: 10px; height: 10px; border-radius: 50%; background: var(--sys); box-shadow: 0 0 0 5px color-mix(in srgb, var(--sys) 30%, transparent); }
.bento__tile h3 a { text-decoration: none; }
.bento__tile h3 a::after { content: ""; position: absolute; inset: 0; z-index: 0; }
.bento__tile h3 a:focus-visible { outline: none; }
.bento__tile h3 a:focus-visible::after { outline: 2px solid #fff; outline-offset: -5px; border-radius: var(--r-card); }
.bento__tile p { max-width: 50ch; color: rgba(255, 255, 255, .84); font-size: .9375rem; line-height: 1.5; }
.bento__tile--xl p { font-size: 1.0625rem; }
.bento__links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.bento__links a { position: relative; z-index: 1; padding: 5px 13px; border: 1px solid rgba(255, 255, 255, .32); border-radius: 999px; background: rgba(255, 255, 255, .1); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); color: #fff; font-size: .8125rem; font-weight: 500; text-decoration: none; transition: border-color .2s var(--ease), background-color .2s var(--ease), color .2s var(--ease); }
.bento__links a:hover { border-color: #fff; background: #fff; color: var(--black); }
.bento__tile:hover .bento__img { transform: scale(1.04); }
.bento__tile:hover h3 a { text-decoration: underline; }

/* Equipment: the one light, Samsung-grey tile, with its picture inset on the right. */
.bento__tile--light { background: var(--grey); color: var(--ink); }
.bento__tile--light::before { display: none; }
.bento__tile--light .bento__img { inset: 12px 12px 12px auto; z-index: 0; width: 42%; height: calc(100% - 24px); border-radius: var(--r-media); }
.bento__tile--light .bento__credit { right: 26px; top: 26px; }
.bento__tile--light .bento__body { padding-right: calc(42% + 36px); }
.bento__tile--light h3 { color: var(--navy); }
.bento__tile--light h3 a:focus-visible::after { outline-color: var(--sam-blue); }
.bento__tile--light p { color: var(--steel); }
.bento__tile--light .bento__links a { border-color: var(--line); background: var(--white); color: var(--ink); -webkit-backdrop-filter: none; backdrop-filter: none; }
.bento__tile--light .bento__links a:hover { border-color: var(--black); background: var(--black); color: #fff; }
.bento__tile--light:hover .bento__img { transform: none; }

/* Commercial: a wide banner, so its shade runs from the left where the text sits. */
@media (min-width: 1024px) {
  .bento__tile--banner { min-height: 300px; justify-content: center; }
  .bento__tile--banner::before { background: linear-gradient(90deg, rgba(5, 11, 22, .92) 0%, rgba(5, 11, 22, .7) 38%, rgba(5, 11, 22, .1) 72%); }
  .bento__tile--banner .bento__body { max-width: 600px; }
  .bento__tile--banner .bento__img { object-position: 50% 60%; }
}

/* ---------- projects (Install: navy with glow and drawing grid) ---------- */
.projects { position: relative; isolation: isolate; color: var(--on-dark); background:
  radial-gradient(60% 45% at 88% 0%, rgba(61, 139, 255, .16), transparent 62%),
  radial-gradient(50% 40% at 0% 100%, rgba(20, 40, 160, .28), transparent 62%),
  var(--night); }
.projects::before, .contact::before { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, #000 20%, transparent 75%); }
.projects .h2 { color: var(--on-dark); }
.projects .lead { color: var(--on-dark-2); }
.sheets { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(16px, 2vw, 24px); }
.sheet { position: relative; display: grid; align-content: start; gap: 18px; padding: 12px 12px 24px; border-radius: var(--r-card); background: rgba(255, 255, 255, .03); border: 1px solid rgba(255, 255, 255, .08); transition: background-color .35s var(--ease), border-color .35s var(--ease), transform .35s var(--ease); }
.sheet:hover, .sheet:focus-within { background: rgba(255, 255, 255, .055); border-color: rgba(255, 255, 255, .18); transform: translateY(-3px); }
.sheet__media { overflow: hidden; aspect-ratio: 4 / 3; border-radius: var(--r-media); background: var(--night-2); }
.sheet__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.sheet:hover .sheet__media img, .sheet:focus-within .sheet__media img { transform: scale(1.04); }
.sheet__body { display: grid; gap: 10px; padding-inline: 10px; }
.sheet h3 { font-size: clamp(1.375rem, 1.15rem + .8vw, 1.75rem); font-stretch: 82%; font-weight: 600; line-height: 1.05; }
.sheet h3 a { text-decoration: none; }
.sheet h3 a::after { content: ""; position: absolute; inset: 0; border-radius: var(--r-card); }
.sheet p { color: var(--on-dark-2); max-width: 58ch; }
.sheet__meta { display: flex; border-top: 1px solid var(--rule-dark); padding-top: 12px; margin-top: 4px; }
.sheet__meta > div { padding-right: 20px; }
.sheet__meta > div + div { padding-left: 20px; border-left: 1px solid var(--rule-dark); }
.sheet__meta dt { font-size: .8125rem; color: var(--on-dark-2); }
.sheet__meta dd { font-size: .9375rem; font-weight: 600; }
.testimonial { display: grid; gap: 18px; margin-top: clamp(64px, 8vw, 112px); padding: clamp(28px, 4vw, 56px); border-radius: var(--r-card); background: linear-gradient(135deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .02)); border: 1px solid rgba(255, 255, 255, .1); }
.testimonial::before { content: ""; width: 96px; height: 2px; background: var(--tri); }
.testimonial p { max-width: 38ch; font-size: clamp(1.375rem, 1.1rem + 1.1vw, 2.125rem); font-stretch: 86%; font-weight: 500; line-height: 1.28; color: var(--on-dark); text-wrap: pretty; }
.testimonial figcaption { font-size: .9375rem; color: var(--on-dark-2); }
.testimonial figcaption a { color: var(--on-dark); }
.projects__all { margin-top: clamp(40px, 5vw, 64px); }

/* ---------- partners ---------- */
.official { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.official__card { display: grid; gap: 16px; align-content: space-between; padding: 22px 22px 24px; border-radius: 20px; background: var(--white); border: 1px solid var(--line); }
.official__card--lead { border: 1.5px solid var(--sam-blue); box-shadow: 0 20px 40px -30px rgba(20, 40, 160, .55); }
.official__card img { width: 100%; max-width: 210px; height: auto; }
.official__role { display: inline-flex; align-items: center; gap: 8px; font-size: .9375rem; font-weight: 600; color: var(--navy); }
.official__role svg { width: 20px; height: 20px; flex: none; color: var(--sam-blue); }
.brands__title { margin-top: clamp(56px, 6vw, 88px); margin-bottom: 18px; font-size: 1rem; font-weight: 600; color: var(--steel); }
.brands { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.brands li { display: grid; place-items: center; padding: 10px 16px; border-radius: 14px; background: var(--white); border: 1px solid var(--line); transition: border-color .3s var(--ease), box-shadow .3s var(--ease); }
.brands img { width: 100%; max-width: 140px; filter: grayscale(1) contrast(1.05); opacity: .75; transition: filter .3s var(--ease), opacity .3s var(--ease); }
.brands li:hover { border-color: #b8c2ce; box-shadow: 0 12px 24px -18px rgba(12, 30, 60, .35); }
.brands li:hover img { filter: none; opacity: 1; }

/* ---------- contact + sales points (Install navy, Samsung-clean form) ---------- */
.contact { position: relative; isolation: isolate; color: var(--on-dark); background:
  radial-gradient(55% 50% at 100% 0%, rgba(20, 40, 160, .32), transparent 62%),
  radial-gradient(45% 45% at 0% 100%, rgba(61, 139, 255, .12), transparent 62%),
  var(--night-2); }
.contact .h2 { color: var(--on-dark); }
.contact .lead { color: var(--on-dark-2); }
.contact__in { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px clamp(40px, 6vw, 120px); align-items: start; }
.contact__intro { display: grid; gap: 24px; }
.contact__list { display: grid; border-top: 1px solid var(--rule-dark); }
.contact__list > div { display: grid; grid-template-columns: 88px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--rule-dark); }
.contact__list dt { color: var(--on-dark-2); font-size: .9375rem; }
.contact__list dd { font-weight: 600; }
.contact__list a { text-decoration: none; }
.contact__list a:hover { text-decoration: underline; }
.contact__note { margin-top: -8px; color: var(--on-dark-2); font-size: .9375rem; }
.points { display: grid; gap: 8px; margin-top: 8px; padding: 22px 22px 12px; border-radius: 20px; background: rgba(255, 255, 255, .04); border: 1px solid rgba(255, 255, 255, .1); }
.points__title { font-size: 1.25rem; font-stretch: 84%; font-weight: 600; line-height: 1.2; color: var(--on-dark); }
.points__lead { color: var(--on-dark-2); font-size: .9375rem; }
.points__lead a { color: var(--on-dark); font-weight: 600; text-decoration: none; }
.points__lead a:hover { text-decoration: underline; }
.points__list { margin-top: 6px; }
.points__list li { display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "city map" "meta map"; align-items: center; column-gap: 16px; padding: 12px 0; border-top: 1px solid var(--rule-dark); }
.points__city { grid-area: city; font-weight: 600; color: var(--on-dark); line-height: 1.3; }
.points__meta { grid-area: meta; font-size: .875rem; color: var(--on-dark-2); line-height: 1.4; }
.points__map { grid-area: map; display: inline-flex; align-items: center; gap: 6px; min-height: 40px; padding: 0 14px 0 10px; border: 1px solid rgba(255, 255, 255, .35); border-radius: 999px; color: var(--on-dark); font-size: .875rem; font-weight: 600; text-decoration: none; white-space: nowrap; transition: background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease); }
.points__map svg { width: 16px; height: 16px; }
.points__map:hover { border-color: #fff; background: #fff; color: var(--black); }
/* Inner pages (about, partners, quote): the same card as a navy band of its own, cut from the homepage contact section by the build tools. */
.points-band { color: var(--on-dark); background: var(--night-2); padding-block: clamp(56px, 7vw, 96px); }
.points-band .points { margin-top: 0; padding: clamp(22px, 3vw, 40px) clamp(22px, 3vw, 40px) clamp(12px, 2vw, 24px); }
.points-band .points__title { font-size: clamp(1.5rem, 1.2rem + 1vw, 2.25rem); line-height: 1.1; }
@media (min-width: 900px) {
  .points-band .points__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 40px; }
}

.inquiry { background: var(--white); color: var(--ink); padding: clamp(24px, 3.4vw, 48px); border-radius: 28px; box-shadow: 0 40px 80px -48px rgba(0, 0, 0, .7); }
.inquiry__title { font-size: clamp(1.5rem, 1.25rem + .8vw, 2rem); font-stretch: 84%; font-weight: 600; color: var(--black); }
.inquiry__hint { margin-top: 6px; font-size: .9375rem; color: var(--steel); }
.inquiry__summary { margin-top: 20px; padding: 16px 18px; border-radius: 14px; border: 1px solid var(--danger); background: #fff5f4; color: var(--danger); }
.inquiry__summary p { font-weight: 600; }
.inquiry__summary ul { margin-top: 6px; list-style: disc; padding-left: 20px; }
.inquiry__summary a { color: var(--danger); }
.inquiry__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 28px; }
.field { display: grid; gap: 6px; align-content: start; }
.field--wide { grid-column: 1 / -1; }
.field label { font-size: .9375rem; font-weight: 600; color: var(--black); }
.field input[type="text"], .field input[type="tel"], .field input[type="email"], .field select, .field textarea {
  width: 100%; min-height: 52px; padding: 12px 16px;
  border: 1px solid #cfd6df; border-radius: var(--r-field); background: #f7f8fa; color: var(--ink);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), background-color .2s var(--ease);
}
.field textarea { min-height: 120px; resize: vertical; line-height: 1.5; }
.field select { appearance: none; padding-right: 42px; background-image: linear-gradient(45deg, transparent 50%, var(--steel) 50%), linear-gradient(135deg, var(--steel) 50%, transparent 50%); background-position: calc(100% - 22px) 50%, calc(100% - 16px) 50%; background-size: 6px 6px; background-repeat: no-repeat; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--steel); }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible { outline: none; background: #fff; border-color: var(--sam-blue); box-shadow: 0 0 0 4px rgba(20, 40, 160, .16); }
.field [aria-invalid="true"] { border-color: var(--danger) !important; }
.field__err { font-size: .875rem; font-weight: 500; color: var(--danger); }
.field--check { grid-template-columns: 24px 1fr; column-gap: 12px; align-items: start; }
.field--check input { width: 22px; height: 22px; margin: 2px 0 0; accent-color: var(--sam-blue); }
.field--check label { font-weight: 400; color: var(--ink); line-height: 1.5; }
.field--check label a { color: var(--sam-blue); }
.field--check .field__err { grid-column: 2; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.inquiry__submit { margin-top: 28px; width: 100%; }
.inquiry__done { margin-top: 8px; }
.inquiry__done h3 { font-size: 1.5rem; font-stretch: 84%; font-weight: 600; color: var(--black); }
.inquiry__done p { margin-top: 8px; color: var(--steel); }
.inquiry__proto { padding: 10px 14px; border-radius: 12px; background: var(--grey); font-size: .875rem; }

/* ---------- footer ---------- */
.site-foot { position: relative; background: #03070f; color: var(--on-dark-2); padding-top: clamp(64px, 7vw, 104px); }
.site-foot::before { content: ""; position: absolute; left: var(--gutter); top: 0; width: 96px; height: 2px; background: var(--tri); }
.site-foot__in { display: grid; grid-template-columns: minmax(0, 4fr) repeat(4, minmax(0, 2fr)); gap: 40px; }
.site-foot__brand { display: grid; gap: 20px; align-content: start; }
.site-foot__logos { display: flex; align-items: center; gap: 18px; color: var(--on-dark); }
.brand__logo--foot { width: 124px; height: 30px; }
.cobrand--foot { color: var(--on-dark); }
.site-foot__brand p { max-width: 38ch; }
.site-foot h2 { font-size: .9375rem; font-weight: 600; color: var(--on-dark); margin-bottom: 12px; }
.site-foot ul { display: grid; gap: 2px; }
.site-foot li { font-size: .9688rem; }
.site-foot li a { display: inline-block; padding: 5px 0; text-decoration: none; }
.site-foot li a:hover { color: var(--on-dark); text-decoration: underline; }
.site-foot__bar { display: flex; justify-content: space-between; gap: 24px; margin-top: clamp(56px, 6vw, 88px); padding-block: 24px; border-top: 1px solid var(--rule-dark); font-size: .875rem; }
.site-foot__bar p:last-child { display: flex; gap: 20px; }
.site-foot__bar a { text-decoration: none; padding: 6px 0; }
.site-foot__bar a:hover { color: var(--on-dark); text-decoration: underline; }

/* ---------- reveal on scroll (one quiet move per block) ---------- */
@media (prefers-reduced-motion: no-preference) {
  .js [data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
  .js [data-reveal].is-in { opacity: 1; transform: none; }
  .js .prod[data-reveal].is-in:hover { transform: translateY(-3px); }
  .js .sheet[data-reveal].is-in:hover, .js .sheet[data-reveal].is-in:focus-within { transform: translateY(-3px); }
}

/* ---------- opening sequence ---------- */
.intro, .intro-skip { display: none; }
html.intro-on { overflow: hidden; }
html.intro-on .intro { display: block; position: fixed; inset: 0; z-index: 100; background: var(--night); overflow: hidden; transition: background-color 1.2s var(--ease-in-out); }
/* 3D version: the building plays in the hero underneath, so this layer is see-through. */
html.intro-on .intro.intro--3d { background: transparent; }
html.intro-on .intro-skip {
  display: inline-flex; align-items: center; position: fixed; right: var(--gutter); bottom: 28px; z-index: 101;
  min-height: 44px; padding: 0 20px; border: 1.5px solid rgba(255, 255, 255, .35); border-radius: 999px;
  background: rgba(5, 11, 22, .5); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); color: #fff; font-weight: 600; font-size: .9375rem; cursor: pointer;
}
html.intro-on .intro-skip:hover { border-color: #fff; }
html.intro-on .intro-skip:focus-visible { outline-color: var(--electric-soft); }
html.intro-on .site-head, html.intro-on .hero__in, html.intro-on .hero__foot, html.intro-on .hero__shade { opacity: 0; }

/* Light version (phones, no WebGL): a line drawing, then the hero still shows through. */
.intro__svg { position: absolute; left: 50%; top: 46%; width: min(86vw, 560px); transform: translate(-50%, -50%); display: none; fill: none; stroke-linecap: square; transition: opacity 1s var(--ease-in-out); }
.intro--svg .intro__svg { display: block; }
.intro__svg path { stroke-dasharray: 1; stroke-dashoffset: 1; vector-effect: non-scaling-stroke; }
.intro__svg .d-grid path { stroke: #2f5c9e; stroke-width: 1; }
.intro__svg .d-shell path { stroke: #6fa6ff; stroke-width: 1; }
.intro__svg .d-mep path { stroke: #cfe0ff; stroke-width: 1.6; }
.intro--svg.is-run .d-grid path { animation: draw .7s var(--ease) forwards; }
.intro--svg.is-run .d-shell path { animation: draw 1.3s .2s var(--ease-in-out) forwards; }
.intro--svg.is-run .d-mep path { animation: draw 1s 1.1s var(--ease-in-out) forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
html.intro-on .intro.is-built { background-color: rgba(5, 11, 22, 0); }
.intro.is-built .intro__svg { opacity: 0; }

/* Labels that name the services in the 3D version; the dot colour tells the system (air, cooling, heating). */
.intro__labels { position: absolute; inset: 0; pointer-events: none; }
.intro__label { --dot: var(--electric-soft); position: absolute; left: 0; top: 0; display: flex; align-items: center; gap: 8px; white-space: nowrap; font-size: .9375rem; font-weight: 600; color: #fff; opacity: 0; transition: opacity .45s var(--ease); will-change: transform; }
.intro__label::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--dot); box-shadow: 0 0 0 4px color-mix(in srgb, var(--dot) 22%, transparent), 0 0 12px var(--dot); flex: none; }
.intro__label--air { --dot: var(--logo-green); }
.intro__label--heat { --dot: #ff6a55; }
.intro__label--cool { --dot: var(--electric-soft); }
.intro__label span { padding: 7px 12px; border-radius: 999px; background: rgba(5, 11, 22, .94); border: 1px solid rgba(180, 205, 255, .55); }
.intro__label.is-on { opacity: 1; }
.intro__label--dim::before { display: none; }
.intro__label--dim span { padding: 0; background: none; border: 0; font-weight: 500; color: #8fb4e8; font-variant-numeric: tabular-nums; transform: translateX(-50%); }

/* Brand line: logo, claim, sub-line, and the Samsung partner line. */
.intro__brand { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 18px; padding: var(--gutter); text-align: center; color: #fff; pointer-events: none; }
.intro__brand::before { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(ellipse 80% 75% at 50% 50%, rgba(5, 11, 22, .98) 0%, rgba(5, 11, 22, .94) 40%, rgba(5, 11, 22, .7) 75%, rgba(5, 11, 22, .4) 100%); opacity: 0; transition: opacity 1s var(--ease); }
.intro__logo { width: 176px; height: 43px; color: #fff; opacity: 0; transform: translateY(10px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.intro__claim { max-width: 22ch; font-size: clamp(2rem, 1.2rem + 3.4vw, 4rem); font-weight: 700; line-height: 1.08; letter-spacing: .01em; opacity: 0; transform: translateY(12px); transition: opacity .9s .15s var(--ease), transform .9s .15s var(--ease); }
.intro__sub { max-width: 38ch; font-size: clamp(1.125rem, 1rem + .45vw, 1.3rem); line-height: 1.45; color: #fff; opacity: 0; transform: translateY(12px); transition: opacity .9s .35s var(--ease), transform .9s .35s var(--ease); }
.intro__partner { display: inline-flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 8px 10px; margin-top: 10px; padding: 10px 18px; border-radius: 999px; border: 1px solid rgba(255, 255, 255, .45); font-size: .9375rem; font-weight: 600; letter-spacing: .02em; color: #fff; opacity: 0; transition: opacity .9s .6s var(--ease); }
.intro.is-brand .intro__brand::before { opacity: 1; }
.intro.is-brand .intro__logo, .intro.is-brand .intro__claim, .intro.is-brand .intro__sub { opacity: 1; transform: none; }
.intro.is-brand .intro__partner { opacity: 1; }
.intro.is-clear .intro__brand { opacity: 0; transition: opacity .7s var(--ease); }
.intro.is-gone { opacity: 0; transition: opacity .45s var(--ease); }
html.intro-freeze .intro, html.intro-freeze .intro * { transition: none !important; }

/* After the intro: navigation first, then headline, text and buttons. */
@keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
html.intro-reveal .site-head { animation: fade .9s var(--ease) both; }
html.intro-reveal .hero__shade { animation: fade 1.2s var(--ease) both; }
html.intro-reveal .hero__title { animation: rise 1s .15s var(--ease) both; }
html.intro-reveal .hero__lead { animation: rise 1s .3s var(--ease) both; }
html.intro-reveal .hero__ctas { animation: rise 1s .45s var(--ease) both; }
html.intro-reveal .hero__foot { animation: fade 1s .6s var(--ease) both; }

/* ---------- responsive ---------- */
/* The full +383 number does not fit beside the six nav links on narrower desktops; it stays in the menu, contact and footer. */
@media (max-width: 1359px) {
  .site-head__phone { display: none; }
}
@media (max-width: 1180px) {
  .nav, .site-head__phone { display: none; }
  .menu-btn { display: inline-flex; }
  .site-foot__in { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-foot__brand { grid-column: 1 / -1; }
}
@media (max-width: 1023px) {
  .sec-head--split, .about__top, .about__bottom, .contact__in { grid-template-columns: minmax(0, 1fr); }
  .sheets, .prods { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .official { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 1023px) {
  /* Two columns: heating across the top, then pairs, equipment across the bottom. */
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-auto-rows: minmax(300px, auto); grid-auto-flow: row dense; }
  .bento__tile--xl { grid-row: span 1; min-height: 420px; }
  .bento__tile--banner { grid-column: span 1; }
}
@media (max-width: 640px) {
  .bento { grid-template-columns: minmax(0, 1fr); grid-auto-rows: auto; }
  .bento__tile, .bento__tile--xl, .bento__tile--light, .bento__tile--banner { grid-column: auto; min-height: 340px; }
  .bento__tile--xl { min-height: 420px; }
  .bento__tile--light { min-height: 0; justify-content: flex-start; }
  .bento__tile--light .bento__img { position: static; width: auto; height: auto; aspect-ratio: 16 / 10; margin: 12px 12px 0; }
  .bento__tile--light .bento__body { padding-right: clamp(20px, 2vw, 30px); }
}
@media (max-width: 767px) {
  .hero__stage { background: var(--stage-tall); }
  .hero__poster img { object-position: 50% 0%; }
  .hero__in { align-self: end; padding-bottom: 28px; }
  .hero__shade { background: linear-gradient(0deg, rgba(5, 11, 22, .96) 0%, rgba(5, 11, 22, .82) 34%, rgba(5, 11, 22, 0) 62%); }
}
@media (max-width: 760px) {
  :root { --head-h: 64px; }
  .site-head__cta, .site-head .lang { display: none; }
  .site-head .lang--menu { display: flex; }
  .brand__logo { width: 96px; height: 23px; }
  .site-head__brand { gap: 12px; }
  .cobrand { padding-left: 12px; }
  .cobrand .sam-mark { width: 64px; height: 10px; }
  .cobrand__t { font-size: .5625rem; }
  .hero__title { font-size: clamp(2.625rem, 1.9rem + 4vw, 3.75rem); }
  .titleblock { grid-template-columns: minmax(0, 1fr); }
  .titleblock > div { padding: 12px 0; }
  .titleblock > div + div { padding-left: 0; border-left: 0; border-top: 1px solid rgba(255, 255, 255, .16); }
  .titleblock > div:nth-child(2) { display: none; }
  .hero__ctas .btn { flex: 1 1 100%; }
  .figures > div { min-height: 0; }
  .brands { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .inquiry__grid { grid-template-columns: minmax(0, 1fr); }
  .annot__labels li { font-size: .75rem; padding: 4px 7px; max-width: 18ch; }
  .site-foot__in { grid-template-columns: minmax(0, 1fr); }
  .site-foot__bar { flex-direction: column; }
}
@media (max-width: 640px) {
  .sheets, .prods, .official { grid-template-columns: minmax(0, 1fr); }
  .samsung__foot { align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* Fit the intro's full message on short landscape screens. */
@media (max-height: 450px) and (orientation: landscape) {
  .intro__brand { gap: 8px; padding: 12px 48px; }
  .intro__logo { width: 130px; height: auto; }
  .intro__claim { max-width: 28ch; font-size: clamp(1.25rem, 4.5vh, 1.75rem); line-height: 1.08; }
  .intro__sub { font-size: clamp(.875rem, 3vh, 1rem); line-height: 1.25; }
  .intro__partner { margin-top: 0; padding: 6px 12px; font-size: .8125rem; }
  html.intro-on .intro-skip { bottom: 10px; }
}