/* KPM Fire & Safety: mobile-first stylesheet (breakpoints 480 / 768 / 1024) */

:root {
  /* Colour */
  --red: #C8102E;
  --red-deep: #9E0B23;
  --red-glow: #FF3B4F;
  --yellow: #FFD100;
  --yellow-soft: #FFE46B;
  --charcoal: #2B2E33;
  --charcoal-deep: #1C1E21;
  --charcoal-mid: #373B41;
  --steel: #5E646C;
  --steel-light: #A9AFB7;
  --paper: #EEF0F2;
  --white: #FFFFFF;
  --screen: #141614;
  --text: #1C1E21;
  --text-muted: #4A4F57;
  --on-dark: #F2F3F5;
  --on-dark-muted: #C3C8CF;

  /* Type */
  --font-display: "Barlow Condensed", "Arial Narrow", "Roboto Condensed", sans-serif;
  --font-body: "Barlow", "Segoe UI", Roboto, Arial, sans-serif;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.5rem;
  --fs-xl: 2rem;
  --fs-hero: clamp(2.5rem, 9vw, 5.25rem);

  /* Spacing */
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 3rem;
  --s-8: 4rem;
  --s-9: 6rem;

  /* Radii */
  --r-sm: 2px;
  --r-md: 6px;
  --r-lg: 14px;

  /* Shadows */
  --shadow-hard: 6px 6px 0 var(--charcoal-deep);
  --shadow-hard-red: 6px 6px 0 var(--red);
  --shadow-panel: 0 30px 60px -20px rgba(0, 0, 0, 0.65), 0 0 0 1px rgba(255, 255, 255, 0.06) inset;
  --shadow-led: 0 0 10px 2px rgba(255, 59, 79, 0.75);
  --shadow-led-yellow: 0 0 10px 2px rgba(255, 209, 0, 0.7);

  /* Layout */
  --container: 1200px;
  --header-h: 64px;
  --hazard: repeating-linear-gradient(-45deg, var(--yellow) 0 16px, var(--charcoal-deep) 16px 32px);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + var(--s-4)); }
body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--text);
  background: var(--paper);
}
img, svg { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }

:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px var(--charcoal-deep);
}

.skip-link {
  position: absolute;
  left: var(--s-4);
  top: var(--s-2);
  z-index: 100;
  padding: var(--s-2) var(--s-4);
  background: var(--yellow);
  color: var(--charcoal-deep);
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-200%);
}
.skip-link:focus { transform: translateY(0); }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--s-4);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: var(--s-3) var(--s-5);
  border: 2px solid transparent;
  border-radius: var(--r-sm);
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s var(--ease), box-shadow 0.15s var(--ease);
}
.btn--primary {
  background: var(--yellow);
  color: var(--charcoal-deep);
  box-shadow: 4px 4px 0 var(--red);
}
.btn--primary:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--red); }
.btn--primary:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--red); }
.btn--ghost {
  border-color: var(--on-dark-muted);
  color: var(--on-dark);
  background: transparent;
}
.btn--ghost:hover { border-color: var(--yellow); color: var(--yellow); }
.btn--block { width: 100%; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--charcoal-deep);
  border-bottom: 3px solid var(--red);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: var(--s-4);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  text-decoration: none;
  color: var(--on-dark);
}
.brand__mark { width: 40px; height: 40px; flex: none; }
.brand__text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.brand__sub { font-weight: 600; color: var(--on-dark-muted); }

.burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  padding: 12px;
  border: 2px solid var(--charcoal-mid);
  border-radius: var(--r-sm);
  background: transparent;
  cursor: pointer;
}
.burger__bar {
  display: block;
  height: 3px;
  background: var(--on-dark);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.burger[aria-expanded="true"] .burger__bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.burger[aria-expanded="true"] .burger__bar:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] .burger__bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

.site-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--charcoal-deep);
  border-bottom: 3px solid var(--red);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s;
}
.site-nav.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
.site-nav__list {
  display: flex;
  flex-direction: column;
  padding: var(--s-2) var(--s-4) var(--s-5);
}
.site-nav__list a {
  display: block;
  padding: var(--s-3) 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--on-dark);
  text-decoration: none;
  border-bottom: 1px solid var(--charcoal-mid);
}
.site-nav__list a:hover { color: var(--yellow); }
.site-nav__list .site-nav__cta {
  margin-top: var(--s-4);
  padding: var(--s-3) var(--s-4);
  border: 0;
  background: var(--red);
  text-align: center;
}
.site-nav__list .site-nav__cta:hover { color: var(--white); background: var(--red-deep); }

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: var(--s-7) var(--s-8);
  color: var(--on-dark);
  background-color: var(--charcoal);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
}
.hero::before {
  content: "";
  position: absolute;
  right: -40%;
  bottom: -10%;
  width: 120%;
  height: 55%;
  background: var(--red);
  transform: skewY(-8deg);
  transform-origin: right bottom;
}
.hero::after {
  content: "";
  position: absolute;
  right: -40%;
  bottom: -10%;
  width: 120%;
  height: 57%;
  background: var(--red-deep);
  transform: skewY(-8deg) translateY(-14px);
  transform-origin: right bottom;
  z-index: 0;
  opacity: 0.6;
}
.hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--s-7);
}
.hero__kicker {
  display: inline-block;
  margin-bottom: var(--s-4);
  padding: var(--s-1) var(--s-3);
  border-left: 4px solid var(--yellow);
  background: rgba(0, 0, 0, 0.25);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--on-dark-muted);
}
.hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-hero);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.01em;
  max-width: 14ch;
  text-wrap: balance;
}
.hero__lead {
  margin-top: var(--s-5);
  max-width: 52ch;
  font-size: var(--fs-md);
  color: var(--on-dark-muted);
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  margin-top: var(--s-6);
}
.hero__actions .btn { flex: 1 1 100%; }

/* Control panel */
.panel {
  position: relative;
  padding: var(--s-4);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, #3A3E45 0%, var(--charcoal-deep) 100%);
  box-shadow: var(--shadow-panel), 10px 10px 0 var(--charcoal-deep);
  border-top: 6px solid var(--red);
}
.panel__top {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding-bottom: var(--s-3);
  margin-bottom: var(--s-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.panel__screw {
  width: 10px;
  height: 10px;
  flex: none;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #8A9099, #3A3E45);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.5);
}
.panel__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-base);
  color: var(--on-dark-muted);
}
.panel__status {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  margin-left: auto;
  font-size: var(--fs-sm);
  color: var(--on-dark-muted);
}
.panel__status-led {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--yellow);
  box-shadow: var(--shadow-led-yellow);
}

.panel__zones {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-2);
}
.zone {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas: "led num" "name name";
  align-items: center;
  align-content: start;
  gap: var(--s-1) var(--s-2);
  min-height: 72px;
  padding: var(--s-3);
  border: 2px solid var(--charcoal-mid);
  border-radius: var(--r-md);
  background: var(--charcoal);
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s var(--ease), transform 0.15s var(--ease);
}
.zone:hover { border-color: var(--steel); }
.zone:active { transform: translateY(1px); }
.zone[aria-selected="true"] {
  border-color: var(--yellow);
  background: #33373D;
}
.zone__led {
  grid-area: led;
  position: relative;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #4A1A21;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.6);
}
.zone__led::before,
.zone__led::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.2s var(--ease);
}
.zone__led::before { background: var(--yellow); box-shadow: var(--shadow-led-yellow); }
.zone__led::after { background: var(--red-glow); box-shadow: var(--shadow-led); }
.zone[aria-selected="true"] .zone__led::before { opacity: 1; }
.zone__num {
  grid-area: num;
  font-size: 0.8125rem;
  color: var(--on-dark-muted);
}
.zone__name {
  grid-area: name;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--on-dark);
  overflow-wrap: anywhere;
  hyphens: auto;
}

/* One orchestrated moment: the lamp test sweep on load */
.panel.is-testing .zone__led::after { animation: lamp-test 0.9s steps(1, end) both; }
.panel.is-testing .zone:nth-child(2) .zone__led::after { animation-delay: 0.18s; }
.panel.is-testing .zone:nth-child(3) .zone__led::after { animation-delay: 0.36s; }
.panel.is-testing .zone:nth-child(4) .zone__led::after { animation-delay: 0.54s; }
.panel.is-testing .panel__status-led { animation: lamp-blink 1.4s steps(1, end) both; }
@keyframes lamp-test {
  0% { opacity: 1; }
  33% { opacity: 0; }
  55% { opacity: 1; }
  100% { opacity: 0; }
}
@keyframes lamp-blink {
  0% { opacity: 0.2; }
  30% { opacity: 1; }
  45% { opacity: 0.2; }
  70% { opacity: 1; }
}

.panel__display {
  position: relative;
  margin-top: var(--s-4);
  padding: var(--s-5) var(--s-4);
  border-radius: var(--r-md);
  background-color: var(--screen);
  background-image: repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.025) 0 1px, transparent 1px 3px);
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.7);
  border: 1px solid #000;
}
.zone-panel[hidden] { display: none; }
.zone-panel:focus-visible { box-shadow: none; outline-offset: 6px; }
.zone-panel.is-entering { animation: screen-in 0.25s var(--ease); }
@keyframes screen-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}
.zone-panel__title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 700;
  line-height: 1.1;
  color: var(--yellow);
}
.zone-panel__text {
  margin-top: var(--s-2);
  color: var(--on-dark);
  max-width: 60ch;
}
.spec {
  display: grid;
  gap: var(--s-3);
  margin-top: var(--s-4);
}
.spec__row {
  padding-left: var(--s-3);
  border-left: 3px solid var(--red);
}
.spec dt {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-base);
  color: var(--on-dark);
}
.spec dd {
  font-size: 0.9375rem;
  color: var(--on-dark-muted);
}

/* Hazard band */
.hazard {
  height: 20px;
  background: var(--hazard);
  border-block: 3px solid var(--charcoal-deep);
}
.hazard--thin { height: 10px; border-block-width: 0; }

/* Sections */
.section { padding-block: var(--s-8); }
.section__head { max-width: 60ch; }
.section__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.25rem);
  font-weight: 800;
  line-height: 1;
  text-wrap: balance;
}
.section__intro {
  margin-top: var(--s-4);
  font-size: var(--fs-md);
  color: var(--text-muted);
  max-width: 58ch;
}

/* Process */
.process { background: var(--paper); }
.steps {
  counter-reset: none;
  display: grid;
  gap: var(--s-5);
  margin-top: var(--s-7);
  position: relative;
}
.steps::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 23px;
  width: 4px;
  background: var(--red);
}
.step {
  position: relative;
  padding: var(--s-2) 0 var(--s-2) 72px;
}
.step__num {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  border: 3px solid var(--charcoal-deep);
  background: var(--yellow);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--charcoal-deep);
  box-shadow: 4px 4px 0 var(--charcoal-deep);
}
.step--loop .step__num { background: var(--red); color: var(--white); }
.step__title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 700;
  line-height: 1.1;
}
.step__text {
  margin-top: var(--s-2);
  color: var(--text-muted);
  max-width: 40ch;
}

/* Properties */
.properties {
  background: var(--white);
  border-top: 1px solid #D5D9DE;
}
.properties__grid {
  display: grid;
  gap: var(--s-7);
  align-items: center;
}
.properties__visual {
  position: relative;
  border: 3px solid var(--charcoal-deep);
  box-shadow: var(--shadow-hard-red);
  background: var(--paper);
}
.properties__img { width: 100%; }
.ptypes {
  display: grid;
  gap: var(--s-4);
  margin-top: var(--s-6);
}
.ptype {
  padding: var(--s-4) var(--s-5);
  background: var(--paper);
  border-left: 6px solid var(--charcoal);
}
.ptype:nth-child(1) { border-left-color: var(--red); }
.ptype:nth-child(2) { border-left-color: var(--charcoal); }
.ptype:nth-child(3) { border-left-color: var(--yellow); }
.ptype__title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.1;
}
.ptype__text {
  margin-top: var(--s-1);
  color: var(--text-muted);
}

/* Contact */
.contact {
  position: relative;
  color: var(--on-dark);
  background: var(--charcoal);
  overflow: hidden;
}
.contact::before {
  content: "";
  position: absolute;
  left: -20%;
  top: 0;
  width: 70%;
  height: 100%;
  background: var(--charcoal-deep);
  transform: skewX(-12deg);
  transform-origin: top left;
}
.contact__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--s-7);
}
.contact .section__intro { color: var(--on-dark-muted); }
.contact__list {
  display: grid;
  gap: var(--s-4);
  margin-top: var(--s-6);
}
.contact__item dt {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--yellow);
}
.contact__item dd { color: var(--on-dark); overflow-wrap: anywhere; }
.contact__item a { color: var(--on-dark); text-underline-offset: 3px; }
.contact__item a:hover { color: var(--yellow); }

.form {
  display: grid;
  gap: var(--s-4);
  padding: var(--s-5) var(--s-4);
  background: var(--white);
  color: var(--text);
  border-top: 6px solid var(--red);
  box-shadow: 10px 10px 0 var(--charcoal-deep);
}
.form__row { display: grid; gap: var(--s-4); }
.field { display: grid; gap: var(--s-1); min-width: 0; }
.field--group { margin: 0; padding: 0; border: 0; }
.field__label {
  padding: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-md);
}
.field__input {
  width: 100%;
  min-height: 48px;
  padding: var(--s-2) var(--s-3);
  border: 2px solid var(--steel);
  border-radius: var(--r-sm);
  background: var(--white);
  color: var(--text);
}
.field__input:focus-visible { border-color: var(--charcoal-deep); }
.field__input[aria-invalid="true"] { border-color: var(--red); }
.field__select { appearance: auto; }
.field__textarea { resize: vertical; min-height: 110px; }
.field__error { font-size: var(--fs-sm); font-weight: 600; color: var(--red); }
.checks {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-2);
  margin-top: var(--s-1);
}
.check {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  min-height: 44px;
  padding: var(--s-2) var(--s-3);
  border: 2px solid #D5D9DE;
  border-radius: var(--r-sm);
  cursor: pointer;
}
.check input { width: 20px; height: 20px; accent-color: var(--red); flex: none; }
.check:has(input:checked) { border-color: var(--red); background: #FDF1F3; }
.form__note { font-size: var(--fs-sm); color: var(--text-muted); }
.form__status { font-size: var(--fs-sm); font-weight: 600; color: var(--charcoal-deep); }
.form__status:empty { display: none; }
.form__status a { color: var(--red-deep); }

/* Footer */
.site-footer {
  background: var(--charcoal-deep);
  color: var(--on-dark-muted);
  font-size: 0.9375rem;
}
.site-footer__grid {
  display: grid;
  gap: var(--s-6);
  padding-block: var(--s-7) var(--s-6);
}
.site-footer__name {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 800;
  color: var(--on-dark);
}
.site-footer__tag { margin-top: var(--s-2); max-width: 44ch; }
.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2) var(--s-5);
  margin-top: var(--s-5);
}
.site-footer a { color: var(--on-dark); text-underline-offset: 3px; }
.site-footer a:hover { color: var(--yellow); }
.legal {
  display: grid;
  gap: var(--s-3);
  padding: var(--s-5) var(--s-4);
  border: 1px solid var(--charcoal-mid);
  border-left: 4px solid var(--yellow);
}
.legal__row { display: grid; gap: 0; }
.legal dt { font-size: 0.8125rem; color: var(--steel-light); }
.legal dd { color: var(--on-dark); overflow-wrap: anywhere; }
.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--s-2);
  padding-block: var(--s-4) var(--s-5);
  border-top: 1px solid var(--charcoal-mid);
  font-size: 0.875rem;
}

/* Inner pages (privacy, terms, 404) */
.page-header {
  background: var(--charcoal-deep);
  border-bottom: 3px solid var(--red);
}
.page-header .site-header__inner { min-height: var(--header-h); }
.back-link {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-md);
  color: var(--on-dark);
  text-decoration: none;
}
.back-link:hover { color: var(--yellow); }
.doc { padding-block: var(--s-7) var(--s-8); }
.doc__inner { max-width: 72ch; }
.doc h1 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 7vw, 3.5rem);
  font-weight: 800;
  line-height: 1;
}
.doc__meta { margin-top: var(--s-3); color: var(--text-muted); }
.doc h2 {
  margin-top: var(--s-6);
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 700;
  line-height: 1.15;
}
.doc p, .doc ul { margin-top: var(--s-3); }
.doc ul { padding-left: var(--s-5); list-style: square; }
.doc li + li { margin-top: var(--s-1); }
.doc a { color: var(--red-deep); text-underline-offset: 3px; }

.notfound {
  min-height: calc(100vh - var(--header-h));
  display: grid;
  place-items: center;
  padding-block: var(--s-8);
  color: var(--on-dark);
  background-color: var(--charcoal);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
}
.notfound__box {
  max-width: 34rem;
  padding: var(--s-6) var(--s-5);
  background: var(--charcoal-deep);
  border-top: 6px solid var(--red);
  box-shadow: 10px 10px 0 var(--red-deep);
}
.notfound__code {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--yellow);
}
.notfound h1 {
  margin-top: var(--s-2);
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 8vw, 3.25rem);
  font-weight: 800;
  line-height: 1;
}
.notfound p { margin-top: var(--s-4); color: var(--on-dark-muted); }
.notfound .btn { margin-top: var(--s-6); }

/* ≥480 */
@media (min-width: 480px) {
  .container { padding-inline: var(--s-5); }
  .hero__actions .btn { flex: 0 1 auto; }
  .brand__text { font-size: 1.5rem; }
  .checks { grid-template-columns: repeat(2, 1fr); }
  .form { padding: var(--s-6) var(--s-5); }
  .panel { padding: var(--s-5); }
}

/* ≥768 */
@media (min-width: 768px) {
  .hero { padding-block: var(--s-8) var(--s-9); }
  .panel__zones { grid-template-columns: repeat(4, 1fr); }
  .zone { grid-template-areas: "led num" "name name"; min-height: 88px; }
  .panel__display { padding: var(--s-6) var(--s-5); min-height: 290px; }
  .spec { grid-template-columns: 1fr 1fr; gap: var(--s-5); }
  .section { padding-block: var(--s-9); }

  .steps { grid-template-columns: repeat(4, 1fr); gap: var(--s-5); }
  .steps::before { top: 23px; bottom: auto; left: 0; right: 0; width: auto; height: 4px; }
  .step { padding: 76px 0 0; }
  .form__row--split { grid-template-columns: 1fr 1fr; }
  .ptypes { grid-template-columns: 1fr; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; align-items: start; }
  .legal__row { grid-template-columns: 11rem 1fr; gap: var(--s-3); }
}

/* ≥1024 */
@media (min-width: 1024px) {
  .container { padding-inline: var(--s-6); }
  .burger { display: none; }
  .site-nav {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: transparent;
    border: 0;
  }
  .site-nav__list {
    flex-direction: row;
    align-items: center;
    gap: var(--s-5);
    padding: 0;
  }
  .site-nav__list a { padding: var(--s-2) 0; border: 0; font-size: 1.125rem; }
  .site-nav__list .site-nav__cta { margin-top: 0; padding: var(--s-2) var(--s-4); }

  .hero__grid { grid-template-columns: 1fr 1.1fr; align-items: center; gap: var(--s-8); }
  .hero::before, .hero::after { right: -10%; width: 70%; height: 80%; }
  .properties__grid { grid-template-columns: 1fr 1fr; gap: var(--s-8); }
  .contact__grid { grid-template-columns: 0.9fr 1.1fr; gap: var(--s-8); align-items: start; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    animation-delay: 0ms !important;
    transition-duration: 0.01ms !important;
  }
}