:root {
  --red: #e21d2f;
  --red-dark: #b80f1d;
  --ink: #15171c;
  --muted: #686f7a;
  --line: #e6e8ec;
  --soft: #f5f6f8;
  --white: #fff;
  --graphite: #282d35;
  --radius: 8px;
  --shadow: 0 24px 70px rgba(21, 23, 28, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, Arial, sans-serif;
  letter-spacing: 0;
}

body.modal-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
video {
  display: block;
  max-width: 100%;
}

button,
input,
textarea {
  font: inherit;
}

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 28px;
  padding: 18px clamp(18px, 5vw, 68px);
  color: var(--white);
  transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 12px 35px rgba(21, 23, 28, 0.08);
  backdrop-filter: blur(16px);
}

.brand {
  position: relative;
  display: flex;
  align-items: center;
  width: 164px;
  height: 48px;
}

.brand-logo {
  display: block;
  width: 100%;
  max-height: 48px;
  object-fit: contain;
  object-position: left center;
  transition: opacity 0.25s ease;
}

.brand-logo-dark {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.site-header.is-scrolled .brand-logo-light,
.site-header.is-open .brand-logo-light {
  opacity: 0;
}

.site-header.is-scrolled .brand-logo-dark,
.site-header.is-open .brand-logo-dark {
  opacity: 1;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 22px;
  font-size: 14px;
  font-weight: 600;
}

.nav a {
  opacity: 0.84;
}

.nav a:hover {
  color: var(--red);
  opacity: 1;
}

.header-phone {
  font-size: 22px;
  font-weight: 800;
  white-space: nowrap;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid currentColor;
  border-radius: 50%;
  color: inherit;
  background: transparent;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  color: var(--white);
  background: var(--graphite);
}

.hero-video,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-video {
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(13, 15, 19, 0.88) 0%, rgba(13, 15, 19, 0.58) 44%, rgba(13, 15, 19, 0.16) 100%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.24), rgba(0, 0, 0, 0.18));
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  align-items: end;
  min-height: 100svh;
  padding: 140px clamp(18px, 5vw, 68px) 42px;
}

.hero-copy {
  width: 100%;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--red);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 22px;
  font-size: clamp(42px, 7vw, 104px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.04;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.2;
}

.lead {
  max-width: 640px;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.5;
}

.hero-actions,
.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 800;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn.primary {
  color: var(--white);
  background: var(--red);
}

.btn.primary:hover {
  background: var(--red-dark);
}

.btn.ghost {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.46);
  background: rgba(255, 255, 255, 0.1);
}

.btn.ghost.dark {
  color: var(--ink);
  border-color: var(--line);
  background: var(--white);
}

.hero-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: min(820px, 100%);
  margin-top: 70px;
  border-top: 1px solid rgba(255, 255, 255, 0.26);
}

.hero-panel div {
  padding: 22px 22px 0 0;
}

.hero-panel strong {
  display: block;
  margin-bottom: 8px;
  color: var(--white);
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1;
}

.hero-panel strong span {
  color: inherit;
  font-size: inherit;
}

.hero-panel span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  transition-delay: var(--reveal-delay, 0s);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hero-copy {
  animation: heroIntro 0.9s ease 0.15s both;
}

.hero-panel {
  animation: heroIntro 0.9s ease 0.35s both;
}

@keyframes heroIntro {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section {
  padding: clamp(72px, 9vw, 124px) clamp(18px, 5vw, 68px);
}

.section-head {
  width: min(760px, 100%);
  margin-bottom: 36px;
}

.section-head.wide {
  display: grid;
  grid-template-columns: 0.85fr 1fr;
  gap: 42px;
  width: 100%;
  align-items: end;
}

.section-head.wide .eyebrow {
  grid-column: 1 / -1;
  margin-bottom: -20px;
}

.section-head p:not(.eyebrow) {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.65;
}

.intro,
.process {
  background: var(--soft);
}

.intro-grid,
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.intro-grid article,
.steps article {
  min-height: 230px;
  padding: 28px;
  background: var(--white);
}

.intro-grid span,
.steps span {
  display: block;
  margin-bottom: 58px;
  color: var(--red);
  font-weight: 800;
}

.intro-grid p,
.steps p,
.use-grid p,
.modal-info p {
  color: var(--muted);
  line-height: 1.6;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.product-card {
  display: flex;
  flex-direction: column;
  min-height: 520px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 10px 30px rgba(21, 23, 28, 0.05);
  transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: rgba(226, 29, 47, 0.28);
  box-shadow: 0 20px 46px rgba(21, 23, 28, 0.11);
}

.product-visual {
  position: relative;
  display: grid;
  place-items: center;
  height: 480px;
  overflow: hidden;
  background: #fff;
}

.product-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.28s ease;
}

.product-card:hover .product-image {
  transform: scale(1.04);
}

.booth-shape {
  position: absolute;
  right: 13%;
  bottom: 0;
  width: 46%;
  height: 80%;
  border: 10px solid var(--cab-color, #2b3037);
  border-bottom: 0;
  border-radius: 8px 8px 0 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.74), rgba(255, 255, 255, 0.1) 36%, rgba(0, 0, 0, 0.12)),
    linear-gradient(180deg, #cfd4dc, #a9b0ba);
  box-shadow: -34px 24px 40px rgba(21, 23, 28, 0.18);
}

.booth-shape::before {
  content: "";
  position: absolute;
  left: -46%;
  bottom: 0;
  width: 44%;
  height: 92%;
  border-radius: 7px 0 0 0;
  background: var(--cab-color, #2b3037);
}

.booth-shape::after {
  content: "";
  position: absolute;
  right: 10%;
  top: 16%;
  width: 14%;
  height: 64%;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.58);
}

.product-badge {
  position: absolute;
  left: 22px;
  top: 22px;
  padding: 8px 10px;
  border-radius: 99px;
  color: var(--white);
  background: var(--red);
  font-size: 12px;
  font-weight: 800;
  z-index: 1;
}

.product-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 24px;
}

.product-body p {
  color: var(--muted);
  line-height: 1.55;
}

.product-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: auto 0 22px;
}

.product-specs span {
  padding: 12px;
  border-radius: var(--radius);
  background: var(--soft);
  color: var(--graphite);
  font-size: 13px;
  font-weight: 700;
}

.product-card .btn {
  width: 100%;
}

.tests {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
  gap: 54px;
  align-items: center;
  background: var(--ink);
  color: var(--white);
}

.tests-media {
  overflow: hidden;
  border-radius: var(--radius);
  aspect-ratio: 16 / 10;
}

.tests-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tests-copy p {
  color: rgba(255, 255, 255, 0.74);
  line-height: 1.65;
}

.meter {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.meter span {
  position: relative;
  overflow: hidden;
  padding: 13px 16px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
  font-weight: 800;
}

.meter span::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  background: rgba(226, 29, 47, 0.62);
  transition: width 0.95s ease;
}

.meter.is-visible span::before {
  width: var(--w);
}

.meter span {
  isolation: isolate;
}

.meter span::after {
  content: "изоляция";
  position: absolute;
  right: 14px;
  color: rgba(255, 255, 255, 0.66);
  font-weight: 600;
}

.use-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.use-grid article {
  min-height: 220px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.use-grid article::before {
  content: "";
  display: block;
  width: 34px;
  height: 4px;
  margin-bottom: 46px;
  background: var(--red);
}

.compare {
  background: var(--soft);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

table {
  width: 100%;
  min-width: 820px;
  border-collapse: collapse;
}

th,
td {
  padding: 20px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--graphite);
  color: var(--white);
  font-size: 14px;
}

td:first-child {
  color: var(--muted);
  font-weight: 700;
}

.steps {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.faq-list {
  display: grid;
  gap: 12px;
}

details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

summary {
  cursor: pointer;
  padding: 22px 24px;
  font-size: 18px;
  font-weight: 800;
}

details p {
  margin: -4px 24px 22px;
  color: var(--muted);
  line-height: 1.6;
}

.calc {
  background: var(--white);
}

.calcWr {
  color: var(--ink);
}

.calc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.44fr);
  gap: 28px;
  align-items: start;
}

.calc-main {
  display: grid;
  gap: 30px;
}

.calc-block h3,
.calc-included h3 {
  margin-bottom: 14px;
  color: var(--graphite);
  font-size: 15px;
  font-weight: 500;
  text-transform: uppercase;
}

.calc-models {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.calc-model {
  position: relative;
  min-height: 92px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  cursor: pointer;
  text-align: left;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.calc-model:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(21, 23, 28, 0.08);
}

.calc-model.is-active {
  border-color: #2d91d0;
  box-shadow: inset 0 0 0 1px #2d91d0;
}

.calc-model strong,
.calc-model span,
.calc-model b {
  display: block;
}

.calc-model strong {
  margin-bottom: 4px;
  font-size: 17px;
}

.calc-model span {
  color: var(--graphite);
  font-size: 13px;
}

.calc-model b {
  margin-top: 8px;
  color: #14865b;
  font-size: 14px;
}

.calc-model-badge {
  position: absolute;
  top: 7px;
  right: 12px;
  padding: 3px 9px;
  border-radius: 5px;
  color: #53719c !important;
  background: #e7edf7;
  font-size: 11px !important;
  font-weight: 700;
}

.calc-color-group + .calc-color-group {
  margin-top: 18px;
}

.calc-color-group p {
  margin-bottom: 10px;
  color: var(--graphite);
  font-size: 14px;
}

.calc-colors {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.calc-color {
  display: grid;
  justify-items: center;
  gap: 7px;
  width: 42px;
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--graphite);
  cursor: pointer;
  font-size: 11px;
}

.calc-color i {
  display: block;
  width: 37px;
  height: 37px;
  border: 1px solid rgba(21, 23, 28, 0.16);
  border-radius: 50%;
  background: var(--calc-color);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.calc-color.is-active i {
  box-shadow: 0 0 0 3px rgba(45, 145, 208, 0.24);
  transform: scale(1.04);
}

.calc-included {
  padding: 24px;
  border-radius: var(--radius);
  background: #fbfaf3;
}

.calc-included h3 span {
  color: #14865b;
}

.calc-included ul,
.calc-summary {
  margin: 0;
}

.calc-included ul {
  display: grid;
  gap: 11px;
  padding: 0;
  list-style: none;
  color: var(--graphite);
}

.calc-included li::before {
  content: "✓ ";
}

.calc-options {
  display: grid;
}

.calc-option {
  display: flex;
  grid-template-columns: none;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  cursor: pointer;
  font-size: 14px;
  font-weight: 400;
}

.calc-option span,
.calc-option strong,
.calc-option em,
.calc-option b {
  display: block;
}

.calc-option strong {
  margin-bottom: 5px;
  font-size: 16px;
  font-weight: 500;
}

.calc-option em {
  max-width: 720px;
  color: var(--muted);
  font-style: normal;
  line-height: 1.45;
}

.calc-option b {
  margin-top: 8px;
  font-weight: 600;
}

.calc-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.calc-option i {
  position: relative;
  flex: 0 0 auto;
  width: 38px;
  height: 22px;
  margin-top: 2px;
  border-radius: 99px;
  background: #d7d7d7;
  transition: background 0.2s ease;
}

.calc-option i::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--white);
  box-shadow: 0 1px 4px rgba(21, 23, 28, 0.18);
  transition: transform 0.2s ease;
}

.calc-option input:checked + i {
  background: var(--red);
}

.calc-option input:checked + i::after {
  transform: translateX(16px);
}

.calc-summary {
  position: sticky;
  top: 96px;
  padding: 24px;
  border: 1px solid #f0efe8;
  border-radius: var(--radius);
  background: #fbfaf3;
  box-shadow: 0 16px 38px rgba(21, 23, 28, 0.06);
}

.calc-summary-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 12px;
  color: var(--graphite);
  font-size: 14px;
}

.calc-summary-row.is-main {
  margin-bottom: 18px;
  font-weight: 700;
}

.calc-summary-row strong {
  white-space: nowrap;
}

.calc-total {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  align-items: baseline;
}

.calc-total strong {
  font-size: clamp(27px, 3vw, 38px);
  line-height: 1;
}

.calc-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: 48px;
  margin-top: 20px;
  border: 1px solid rgba(21, 23, 28, 0.32);
  border-radius: var(--radius);
  background: transparent;
  cursor: pointer;
  color: var(--ink);
  font-weight: 600;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.calc-submit:hover {
  transform: translateY(-2px);
  border-color: var(--red);
  background: var(--white);
}

.order {
  display: grid;
  grid-template-columns: 0.8fr 1fr;
  gap: 54px;
  align-items: start;
  color: var(--white);
  background:
    linear-gradient(120deg, rgba(21, 23, 28, 0.96), rgba(21, 23, 28, 0.82)),
    url("../img/hero-booth.png") center / cover;
}

.order-copy p {
  color: rgba(255, 255, 255, 0.74);
  line-height: 1.65;
}

.order-form {
  display: grid;
  gap: 14px;
  padding: 28px;
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink);
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 15px 16px;
  color: var(--ink);
  background: var(--soft);
  outline: none;
}

input:focus,
textarea:focus {
  border-color: var(--red);
  background: var(--white);
}

textarea {
  min-height: 118px;
  resize: vertical;
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(18px, 5vw, 68px);
  background: var(--white);
}

.footer-logo {
  display: block;
  width: 186px;
  height: auto;
}

.footer p {
  margin: 8px 0 0;
  color: var(--muted);
}

.footer a {
  display: block;
  margin-bottom: 8px;
  font-weight: 800;
}

.modal {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal.is-open {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 10, 14, 0.72);
  backdrop-filter: blur(10px);
}

.modal-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(320px, 1fr);
  width: min(1040px, 100%);
  max-height: min(860px, 92svh);
  overflow: auto;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
  animation: modalIn 0.28s ease both;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-close {
  position: absolute;
  z-index: 2;
  top: 12px;
  right: 12px;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 50%;
  color: var(--ink);
  background: var(--white);
  box-shadow: 0 8px 24px rgba(21, 23, 28, 0.12);
  cursor: pointer;
  font-size: 28px;
  line-height: 1;
}

.modal-visual {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  min-height: 560px;
}

.modal-product-image {
  width: 88%;
  height: 88%;
  object-fit: contain;
}

.modal-info {
  padding: 44px;
}

.modal-specs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 26px 0;
}

.modal-specs div {
  padding: 14px;
  border-radius: var(--radius);
  background: var(--soft);
}

.modal-specs dt {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.modal-specs dd {
  margin: 0;
  font-weight: 800;
}

.swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.swatch {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 99px;
  background: var(--white);
  cursor: pointer;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.swatch.is-active {
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(226, 29, 47, 0.1);
}

.swatch i {
  display: block;
  width: 18px;
  height: 18px;
  border: 1px solid rgba(21, 23, 28, 0.14);
  border-radius: 50%;
  background: var(--swatch-color);
}

.modal-list {
  display: grid;
  gap: 8px;
  padding-left: 18px;
  color: var(--muted);
}

@media (max-width: 1080px) {
  .nav {
    gap: 14px;
    font-size: 13px;
  }

  .section-head.wide,
  .tests,
  .calc-layout,
  .order {
    grid-template-columns: 1fr;
  }

  .calc-summary {
    position: static;
  }

  .catalog-grid,
  .intro-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .use-grid,
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .site-header {
    grid-template-columns: auto 1fr auto;
    gap: 14px;
    padding: 14px 18px;
  }

  .nav {
    position: absolute;
    top: 70px;
    left: 18px;
    right: 18px;
    display: none;
    grid-column: 1 / -1;
    padding: 16px;
    border-radius: var(--radius);
    background: var(--white);
    color: var(--ink);
    box-shadow: var(--shadow);
  }

  .site-header.is-open .nav {
    display: grid;
  }

  .header-phone {
    display: none;
  }

  .menu-toggle {
    display: block;
    justify-self: end;
  }

  .hero-content {
    align-items: center;
    padding-top: 96px;
  }

  h1 {
    font-size: 30px;
  }

  h2 {
    font-size: 24px;
  }

  .eyebrow {
    font-size: 16px;
  }

  .hero-panel,
  .catalog-grid,
  .calc-models,
  .intro-grid,
  .use-grid,
  .steps,
  .modal-card,
  .modal-specs {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    margin-top: 44px;
  }

  .product-card {
    min-height: auto;
  }

  .calc-option {
    gap: 12px;
  }

  .calc-summary {
    padding: 20px;
  }

  .calc-total {
    display: grid;
  }

  .modal {
    padding: 12px;
  }

  .modal-visual {
    min-height: 320px;
  }

  .modal-info {
    padding: 28px;
  }

  .footer {
    display: grid;
  }
  .product-visual {
    height: auto;
  }
}

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

  .reveal {
    opacity: 1;
    transform: none;
  }

  .meter span::before {
    width: var(--w);
  }
}