:root {
  --navy: #0b2a64;
  --navy-2: #163d79;
  --blue: #2f7bef;
  --blue-dark: #1664d7;
  --green: #49b92d;
  --green-dark: #3ca322;
  --sky: #f4f9ff;
  --sky-strong: #edf6ff;
  --line: #c9dbf3;
  --line-soft: #dbe8f7;
  --text: #142348;
  --muted: #53617d;
  --white: #ffffff;
  --danger: #c63737;
  --shadow-soft: 0 18px 50px rgba(31, 72, 126, 0.11);
  --shadow-card: 0 12px 30px rgba(27, 65, 116, 0.09);
  --radius-sm: 9px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --container: 1200px;
  --header-height: 76px;
  color-scheme: light;
  font-family: "Manrope", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 18px);
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--white);
  color: var(--text);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
}

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

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

svg {
  width: 1em;
  height: 1em;
  stroke-width: 1.9;
}

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

h1,
h2,
h3,
strong,
.button,
.wordmark {
  letter-spacing: -0.025em;
}

h2 {
  margin-bottom: 16px;
  color: var(--navy);
  font-size: clamp(34px, 4vw, 50px);
  line-height: 1.08;
  font-weight: 760;
}

h3 {
  color: var(--navy);
}

.container {
  width: min(var(--container), calc(100% - 64px));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 200;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  transform: translateY(-160%);
  border-radius: var(--radius-sm);
  background: var(--navy);
  color: var(--white);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid rgba(47, 123, 239, 0.45);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: var(--header-height);
  border-bottom: 1px solid transparent;
  background: rgba(255, 255, 255, 0.96);
  transition: box-shadow 180ms ease, border-color 180ms ease;
}

.site-header.is-scrolled {
  border-color: rgba(201, 219, 243, 0.75);
  box-shadow: 0 10px 28px rgba(21, 53, 96, 0.07);
}

.header-inner {
  display: grid;
  grid-template-columns: minmax(210px, 1fr) auto minmax(210px, 1fr);
  align-items: center;
  height: 100%;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--navy);
  font-size: 20px;
  font-weight: 780;
}

.wordmark-mark {
  display: grid;
  width: 31px;
  height: 31px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--blue);
  font-size: 17px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 42px;
  color: var(--navy);
  font-size: 15px;
  font-weight: 610;
}

.main-nav a,
.site-footer nav a,
.footer-contact a {
  transition: color 160ms ease;
}

.main-nav a:hover,
.site-footer nav a:hover,
.footer-contact a:hover {
  color: var(--blue);
}

.header-phone {
  display: inline-flex;
  justify-self: end;
  align-items: center;
  gap: 8px;
  color: var(--navy);
  font-size: 17px;
  font-weight: 760;
}

.header-phone svg {
  color: var(--blue);
}

.menu-toggle {
  display: none;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 800px;
  background: var(--sky);
}

.hero::before,
.hero::after {
  position: absolute;
  content: "";
  pointer-events: none;
}

.hero::before {
  top: 0;
  right: 0;
  width: 48%;
  height: 100%;
  background: var(--sky-strong);
  clip-path: polygon(14% 0, 100% 0, 100% 100%, 0 100%);
}

.hero::after {
  right: 8%;
  bottom: -200px;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(47, 123, 239, 0.1);
  border-radius: 50%;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 48px;
  min-height: 800px;
  padding-block: 64px 66px;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 620px;
}

.hero h1 {
  margin-bottom: 24px;
  color: var(--navy);
  font-size: clamp(48px, 4.65vw, 64px);
  line-height: 1.06;
  font-weight: 780;
}

.hero-lead {
  margin-bottom: 34px;
  color: #34415d;
  font-size: 19px;
  line-height: 1.55;
}

.benefit-list {
  display: flex;
  align-items: flex-start;
  gap: 34px;
  margin: 0 0 38px;
  padding: 0;
  list-style: none;
}

.benefit-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--navy);
  font-size: 14px;
  font-weight: 670;
  line-height: 1.3;
}

.icon-box {
  display: grid;
  flex: 0 0 auto;
  width: 39px;
  height: 39px;
  place-items: center;
  color: var(--blue);
  font-size: 28px;
}

.control-label {
  margin-bottom: 10px;
  color: var(--navy);
  font-size: 15px;
  font-weight: 720;
}

.area-selector {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: min(100%, 520px);
  margin-bottom: 28px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--white);
}

.area-selector button {
  min-height: 52px;
  padding: 10px 8px;
  border: 0;
  border-right: 1px solid var(--line-soft);
  background: transparent;
  color: var(--navy);
  font-size: 15px;
  font-weight: 650;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.area-selector button:last-child {
  border-right: 0;
}

.area-selector button:hover {
  background: #f7fbff;
}

.area-selector button[aria-pressed="true"] {
  position: relative;
  z-index: 1;
  background: #f8fbff;
  color: var(--blue-dark);
  box-shadow: inset 0 0 0 1px var(--blue);
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-bottom: 34px;
}

.button {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 740;
  line-height: 1.15;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease,
    border-color 160ms ease;
}

.button svg {
  font-size: 19px;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  border-color: var(--green);
  background: var(--green);
  color: var(--white);
  box-shadow: 0 10px 22px rgba(73, 185, 45, 0.18);
}

.button-primary:hover {
  border-color: var(--green-dark);
  background: var(--green-dark);
  box-shadow: 0 12px 24px rgba(73, 185, 45, 0.24);
}

.button-secondary {
  border-color: var(--blue);
  background: rgba(255, 255, 255, 0.62);
  color: var(--navy);
}

.button-secondary:hover {
  background: var(--white);
}

.button:disabled {
  cursor: wait;
  opacity: 0.68;
  transform: none;
}

.price-promise {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  align-self: flex-start;
  color: var(--navy);
  font-size: 14px;
  line-height: 1.45;
}

.price-promise:hover span:last-child {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.hero-visual {
  position: relative;
  display: flex;
  min-width: 0;
  align-items: flex-start;
  justify-content: center;
}

.product-glow {
  position: absolute;
  top: 60px;
  left: 50%;
  width: 500px;
  height: 500px;
  transform: translateX(-48%);
  border: 1px solid rgba(47, 123, 239, 0.12);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.43);
}

.hero-product-image {
  position: relative;
  z-index: 1;
  width: min(72%, 405px);
  height: auto;
  margin-top: 2px;
  filter: drop-shadow(0 22px 22px rgba(35, 59, 91, 0.17));
}

.recommendation-card {
  position: absolute;
  z-index: 2;
  right: 0;
  bottom: 28px;
  width: min(100%, 445px);
  padding: 22px 24px 18px;
  border: 1px solid rgba(201, 219, 243, 0.95);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-card);
  transition: opacity 150ms ease, transform 150ms ease;
}

.recommendation-card.is-updating {
  opacity: 0.58;
  transform: translateY(4px);
}

.recommendation-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 2px;
  color: var(--navy);
}

.recommendation-head strong {
  color: #1454a2;
  font-size: 21px;
}

.recommendation-head span {
  font-size: 16px;
  font-weight: 720;
}

.recommendation-model {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 12px;
}

.recommendation-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 12px;
}

.recommendation-specs span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.recommendation-specs svg {
  color: var(--blue);
  font-size: 16px;
}

.recommendation-bottom {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  padding-top: 13px;
}

.recommendation-bottom > div {
  display: grid;
  gap: 2px;
}

.recommendation-bottom span {
  color: var(--muted);
  font-size: 11px;
}

.recommendation-bottom strong {
  color: var(--navy);
  font-size: 25px;
  line-height: 1.15;
}

.recommendation-price {
  text-align: right;
}

.recommendation-price strong {
  font-size: 23px;
}

.mounting-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 11px;
  text-align: right;
}

.section {
  padding-block: 104px;
}

.section-heading {
  margin-bottom: 48px;
}

.section-heading p,
.brands-copy > p,
.faq-intro > p,
.warranty-copy > p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.65;
}

.row-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--blue-dark);
  font-size: 14px;
  font-weight: 690;
  cursor: pointer;
}

.text-link:hover {
  color: var(--navy);
}

.product-list {
  border-top: 1px solid var(--line-soft);
}

.product-row {
  position: relative;
  display: grid;
  grid-template-columns: 250px minmax(270px, 1.4fr) minmax(150px, 0.65fr) minmax(170px, 0.7fr);
  align-items: center;
  min-height: 198px;
  border-bottom: 1px solid var(--line-soft);
  transition: background 160ms ease;
}

.product-row:hover {
  background: #fbfdff;
}

.product-row > div:not(.product-image-wrap) {
  padding-inline: 30px;
}

.product-row > div + div {
  border-left: 1px solid var(--line-soft);
}

.product-image-wrap {
  position: relative;
  align-self: stretch;
  overflow: hidden;
}

.product-image-wrap::after {
  position: absolute;
  right: 30px;
  bottom: 25px;
  left: 30px;
  height: 18px;
  border-radius: 50%;
  background: rgba(31, 63, 103, 0.11);
  content: "";
  filter: blur(9px);
}

.product-list-image {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: 50%;
  width: 215px;
  height: 145px;
  object-fit: contain;
  transform: translate(-50%, -50%);
  filter: drop-shadow(0 12px 10px rgba(35, 59, 91, 0.11));
}

.product-main h3 {
  margin-bottom: 4px;
  font-size: 19px;
}

.product-model {
  margin-bottom: 15px;
  color: var(--muted);
  font-size: 13px;
}

.feature-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: #32415f;
  font-size: 13px;
}

.feature-inline li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.feature-inline svg {
  color: var(--blue);
  font-size: 15px;
}

.product-area span,
.product-price span {
  display: block;
  margin-bottom: 5px;
  color: var(--muted);
  font-size: 12px;
}

.product-area strong,
.product-price strong {
  color: var(--navy);
  font-size: 24px;
  line-height: 1.2;
}

.product-price .button {
  min-height: 40px;
  margin-top: 16px;
  padding: 9px 18px;
  font-size: 13px;
}

.catalog-note {
  max-width: 800px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.brands {
  overflow: hidden;
  background: var(--sky);
}

.brands-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 74px;
}

.brands-copy > p {
  max-width: 650px;
  margin-bottom: 34px;
}

.brand-rail {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  overflow: hidden;
  border: 1px solid var(--blue);
  border-radius: var(--radius-sm);
  background: var(--white);
}

.brand-rail strong {
  display: grid;
  min-height: 76px;
  place-items: center;
  border-right: 1px solid var(--line-soft);
  color: var(--navy);
  font-size: 19px;
}

.brand-rail strong:last-child {
  border-right: 0;
}

.brands-media {
  position: relative;
  min-height: 350px;
}

.brands-media::before {
  position: absolute;
  inset: 8px -80px 48px 34px;
  border: 1px solid var(--line);
  border-radius: 50%;
  content: "";
}

.brands-media img {
  position: relative;
  z-index: 1;
  width: 100%;
  margin-top: 34px;
  filter: drop-shadow(0 24px 22px rgba(35, 59, 91, 0.16));
}

.brands-media p {
  position: absolute;
  z-index: 2;
  right: 0;
  bottom: 8px;
  width: 245px;
  margin: 0;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--white);
  color: var(--navy);
  font-size: 13px;
  font-weight: 670;
  box-shadow: var(--shadow-card);
}

.installation {
  padding-bottom: 114px;
}

.installation-heading {
  position: relative;
  display: flex;
  min-height: 180px;
  align-items: center;
  justify-content: space-between;
  padding-right: 300px;
}

.installation-heading img {
  position: absolute;
  top: -72px;
  right: -14px;
  width: 315px;
  height: 270px;
  object-fit: contain;
  filter: drop-shadow(0 18px 18px rgba(35, 59, 91, 0.14));
}

.steps-list {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps-list::before {
  position: absolute;
  top: 46px;
  right: 12%;
  left: 12%;
  height: 1px;
  background: var(--blue);
  content: "";
}

.steps-list li {
  position: relative;
  min-height: 260px;
  padding: 32px 26px 28px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-card);
}

.steps-list > li > svg {
  margin: 28px 0 16px;
  color: var(--blue);
  font-size: 33px;
}

.step-number {
  position: relative;
  z-index: 1;
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid var(--blue);
  border-radius: 50%;
  background: var(--white);
  color: var(--navy);
  font-weight: 760;
}

.steps-list h3 {
  margin-bottom: 8px;
  font-size: 17px;
}

.steps-list p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.price-check {
  padding-block: 40px;
  background: var(--sky);
}

.price-check-panel {
  display: grid;
  grid-template-columns: 0.9fr 1.35fr;
  align-items: center;
  gap: 48px;
  padding: 36px 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--white);
}

.price-check-panel > div:first-child {
  position: relative;
  padding-left: 70px;
}

.outline-icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid var(--blue);
  border-radius: 50%;
  color: var(--blue);
  font-size: 24px;
}

.price-check-panel .outline-icon {
  position: absolute;
  top: 2px;
  left: 0;
}

.price-check h2 {
  margin-bottom: 10px;
  font-size: clamp(27px, 2.4vw, 36px);
}

.price-check-panel > div > p {
  margin: 0;
  color: var(--muted);
}

.inline-form {
  display: grid;
  grid-template-columns: 1fr 0.75fr auto;
  align-items: end;
  gap: 14px;
}

.inline-form .button {
  min-width: 160px;
}

.form-status {
  grid-column: 1 / -1;
  min-height: 0;
  margin: 0;
  color: var(--navy);
  font-size: 13px;
  font-weight: 630;
}

.form-status:empty {
  display: none;
}

.form-trap {
  position: absolute !important;
  left: -10000px !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
}

.field {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.field label {
  margin-bottom: 6px;
  color: var(--navy);
  font-size: 12px;
  font-weight: 700;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 52px;
  padding: 13px 14px;
  border: 1px solid #b8cce5;
  border-radius: 7px;
  background: var(--white);
  color: var(--text);
  font-size: 15px;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.field textarea {
  min-height: 96px;
  resize: vertical;
}

.field input:hover,
.field select:hover,
.field textarea:hover {
  border-color: #8eadd4;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--blue);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(47, 123, 239, 0.13);
}

.field.is-invalid input,
.field.is-invalid select,
.field.is-invalid textarea {
  border-color: var(--danger);
}

.field-error {
  display: none;
  margin-top: 5px;
  color: var(--danger);
  font-size: 11px;
}

.field.is-invalid .field-error {
  display: block;
}

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

.coverage-grid {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  align-items: center;
  gap: 80px;
}

.coverage-main {
  max-width: 460px;
  margin-bottom: 18px;
  color: var(--navy);
  font-size: clamp(30px, 3vw, 45px);
  font-weight: 760;
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.coverage-secondary {
  margin-bottom: 32px;
  color: var(--muted);
  font-size: 17px;
}

.check-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--navy);
  font-size: 14px;
  font-weight: 650;
}

.check-list li {
  display: flex;
  align-items: center;
  gap: 12px;
}

.check-list svg {
  color: var(--blue);
  font-size: 23px;
}

.coverage-visual {
  position: relative;
  min-height: 480px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 44% 56% 47% 53% / 55% 42% 58% 45%;
  background: var(--sky);
}

.coverage-visual::before {
  position: absolute;
  inset: 38px;
  border: 1px dashed rgba(47, 123, 239, 0.5);
  border-radius: 48% 52% 57% 43% / 51% 46% 54% 49%;
  content: "";
}

.coverage-ring {
  position: absolute;
  top: 42%;
  left: 58%;
  border: 1px solid rgba(47, 123, 239, 0.23);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.ring-1 {
  width: 120px;
  height: 120px;
  background: rgba(47, 123, 239, 0.06);
}

.ring-2 {
  width: 230px;
  height: 230px;
}

.ring-3 {
  width: 350px;
  height: 350px;
}

.coverage-point {
  position: absolute;
  z-index: 2;
  display: grid;
  place-items: center;
  border: 1px solid var(--blue);
  border-radius: 50%;
  background: var(--white);
  color: var(--navy);
  font-size: 13px;
  font-weight: 750;
  box-shadow: var(--shadow-card);
}

.point-city {
  top: calc(42% - 45px);
  left: calc(58% - 45px);
  width: 90px;
  height: 90px;
}

.point-city::before {
  position: absolute;
  top: 19px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--blue-dark);
  content: "";
}

.point-city {
  padding-top: 20px;
}

.point-region {
  right: 14%;
  bottom: 15%;
  width: 116px;
  height: 116px;
  padding: 14px;
  text-align: center;
}

.company {
  overflow: hidden;
  background: var(--sky);
}

.company-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: 80px;
  padding-block: 20px;
}

.warranty-copy {
  padding-right: 60px;
}

.warranty-copy .outline-icon {
  margin-bottom: 24px;
}

.warranty-copy h2 {
  max-width: 620px;
}

.company-details {
  position: relative;
  z-index: 2;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.9);
}

.company-details h3 {
  margin-bottom: 20px;
  font-size: 21px;
}

.company-details dl {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 28px;
  margin: 0 0 22px;
}

.company-details dl div {
  display: grid;
  gap: 2px;
}

.company-details dt {
  color: var(--muted);
  font-size: 11px;
}

.company-details dd {
  margin: 0;
  color: var(--navy);
  font-weight: 720;
}

.company-details > p {
  max-width: 440px;
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 13px;
}

.company-product {
  position: absolute;
  bottom: -132px;
  left: 30%;
  width: 360px;
  pointer-events: none;
  filter: drop-shadow(0 18px 20px rgba(35, 59, 91, 0.13));
  opacity: 0.42;
}

.faq-grid {
  display: grid;
  grid-template-columns: 0.55fr 1.45fr;
  align-items: start;
  gap: 80px;
}

.faq-intro {
  position: sticky;
  top: calc(var(--header-height) + 34px);
}

.faq-intro > p {
  margin-bottom: 28px;
}

.accordion {
  border-top: 1px solid var(--line-soft);
}

.accordion-item {
  border-bottom: 1px solid var(--line-soft);
}

.accordion-item h3 {
  margin: 0;
}

.accordion-item button {
  display: flex;
  width: 100%;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 4px;
  border: 0;
  background: transparent;
  color: var(--navy);
  font-size: 17px;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.accordion-item button svg {
  flex: 0 0 auto;
  color: var(--blue);
  font-size: 20px;
  transition: transform 160ms ease;
}

.accordion-item button[aria-expanded="true"] svg {
  transform: rotate(45deg);
}

.accordion-panel {
  overflow: hidden;
}

.accordion-panel p {
  max-width: 700px;
  margin-bottom: 25px;
  color: var(--muted);
}

.lead {
  padding-top: 60px;
}

.lead-panel {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 60px;
  padding: 54px 58px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--sky);
}

.lead-intro h2 {
  font-size: clamp(34px, 3.2vw, 47px);
}

.lead-intro p {
  max-width: 420px;
  margin-bottom: 22px;
  color: var(--muted);
}

.lead-phone {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--navy);
  font-size: 22px;
  font-weight: 770;
}

.lead-phone svg {
  color: var(--blue);
}

.lead-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: start;
  gap: 16px;
}

.field-wide,
.lead-form .button,
.lead-form .form-status {
  grid-column: 1 / -1;
}

.lead-form .button {
  justify-self: start;
  min-width: 210px;
}

.site-footer {
  padding-block: 44px 100px;
  border-top: 1px solid var(--line-soft);
  background: var(--white);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 0.7fr;
  align-items: start;
  gap: 36px;
}

.footer-grid > div:first-child p {
  max-width: 470px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  color: var(--navy);
  font-size: 13px;
  font-weight: 640;
}

.footer-contact {
  display: grid;
  justify-items: end;
  gap: 10px;
  color: var(--navy);
  font-size: 13px;
  font-weight: 720;
}

.footer-contact a:first-child {
  font-size: 17px;
}

.mobile-actions {
  display: none;
}

.product-dialog {
  width: min(760px, calc(100% - 36px));
  max-height: min(760px, calc(100dvh - 36px));
  padding: 0;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
  box-shadow: 0 30px 80px rgba(18, 48, 93, 0.28);
}

.product-dialog::backdrop {
  background: rgba(6, 25, 58, 0.55);
  backdrop-filter: blur(3px);
}

.dialog-close {
  position: sticky;
  z-index: 3;
  top: 18px;
  display: grid;
  width: 42px;
  height: 42px;
  margin: 18px 18px -60px auto;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--white);
  color: var(--navy);
  cursor: pointer;
}

.dialog-content {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 34px;
  padding: 56px 48px 48px;
}

.dialog-product-media {
  position: relative;
  min-height: 300px;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--sky);
}

.dialog-product-media img {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 285px;
  max-width: none;
  transform: translate(-50%, -50%);
}

.dialog-details h2 {
  margin-bottom: 8px;
  font-size: 34px;
}

.dialog-details .product-model {
  margin-bottom: 20px;
}

.dialog-details ul {
  display: grid;
  gap: 9px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  color: var(--muted);
}

.dialog-details li {
  display: flex;
  align-items: center;
  gap: 9px;
}

.dialog-details li svg {
  color: var(--blue);
}

.dialog-price {
  display: grid;
  margin-bottom: 22px;
}

.dialog-price strong {
  color: var(--navy);
  font-size: 30px;
}

.dialog-price span {
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 1100px) {
  :root {
    --container: 960px;
  }

  .header-inner {
    grid-template-columns: auto 1fr auto;
  }

  .main-nav {
    justify-self: center;
    gap: 26px;
  }

  .wordmark-mark {
    display: none;
  }

  .hero {
    min-height: 760px;
  }

  .hero-grid {
    gap: 28px;
    min-height: 760px;
    padding-block: 48px 50px;
  }

  .hero h1 {
    font-size: clamp(43px, 4.5vw, 48px);
  }

  .benefit-list {
    gap: 20px;
  }

  .benefit-list li {
    gap: 7px;
    font-size: 13px;
  }

  .hero-product-image {
    width: 74%;
  }

  .recommendation-card {
    bottom: 12px;
  }

  .product-row {
    grid-template-columns: 210px minmax(250px, 1.25fr) minmax(135px, 0.62fr) minmax(155px, 0.68fr);
  }

  .product-row > div:not(.product-image-wrap) {
    padding-inline: 22px;
  }

  .steps-list {
    gap: 16px;
  }

  .steps-list li {
    padding-inline: 20px;
  }

  .price-check-panel {
    grid-template-columns: 0.82fr 1.18fr;
    gap: 30px;
  }

  .inline-form {
    grid-template-columns: 1fr 1fr;
  }

  .inline-form .button {
    grid-column: 1 / -1;
    justify-self: start;
  }
}

@media (max-width: 900px) {
  :root {
    --header-height: 68px;
  }

  .container {
    width: min(calc(100% - 40px), 760px);
  }

  .header-inner {
    grid-template-columns: auto 1fr auto;
  }

  .menu-toggle {
    display: grid;
    width: 42px;
    height: 42px;
    justify-self: end;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: var(--white);
    color: var(--navy);
    font-size: 22px;
    cursor: pointer;
  }

  .main-nav {
    position: fixed;
    z-index: 120;
    top: var(--header-height);
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    padding: 12px 20px 24px;
    transform: translateY(-120%);
    border-bottom: 1px solid var(--line);
    background: var(--white);
    box-shadow: var(--shadow-soft);
    visibility: hidden;
    transition: transform 200ms ease, visibility 200ms ease;
  }

  .main-nav.is-open {
    transform: translateY(0);
    visibility: visible;
  }

  .main-nav a {
    padding: 16px 4px;
    border-bottom: 1px solid var(--line-soft);
  }

  .header-phone {
    display: none;
  }

  .hero,
  .hero-grid {
    min-height: auto;
  }

  .hero::before {
    top: auto;
    bottom: 0;
    width: 100%;
    height: 47%;
    clip-path: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-block: 64px 70px;
  }

  .hero-copy {
    max-width: 680px;
  }

  .hero-visual {
    min-height: 660px;
  }

  .product-glow {
    width: 580px;
    height: 580px;
  }

  .hero-product-image {
    width: min(58%, 395px);
  }

  .recommendation-card {
    right: 50%;
    bottom: 20px;
    width: min(100%, 520px);
    transform: translateX(50%);
  }

  .recommendation-card.is-updating {
    transform: translate(50%, 4px);
  }

  .section {
    padding-block: 82px;
  }

  .product-row {
    grid-template-columns: 190px 1fr 160px;
  }

  .product-row .product-area {
    display: none;
  }

  .brands-grid,
  .coverage-grid,
  .company-grid,
  .faq-grid,
  .lead-panel {
    grid-template-columns: 1fr;
  }

  .brands-grid,
  .coverage-grid,
  .company-grid,
  .faq-grid {
    gap: 50px;
  }

  .brand-rail strong {
    min-height: 66px;
    font-size: 16px;
  }

  .brands-media {
    max-width: 620px;
    min-height: 300px;
    margin-inline: auto;
  }

  .installation-heading {
    min-height: 130px;
    padding-right: 240px;
  }

  .installation-heading img {
    width: 250px;
  }

  .steps-list {
    grid-template-columns: 1fr 1fr;
  }

  .steps-list::before {
    display: none;
  }

  .price-check-panel {
    grid-template-columns: 1fr;
  }

  .inline-form {
    grid-template-columns: 1fr 1fr auto;
  }

  .inline-form .button {
    grid-column: auto;
  }

  .coverage-grid {
    gap: 42px;
  }

  .coverage-visual {
    min-height: 420px;
  }

  .warranty-copy {
    padding-right: 0;
  }

  .company-product {
    bottom: 190px;
    left: 42%;
  }

  .faq-intro {
    position: static;
  }

  .lead-panel {
    gap: 36px;
    padding: 44px;
  }

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

  .footer-contact {
    grid-column: 2;
    justify-items: start;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(calc(100% - 30px), 560px);
  }

  .wordmark {
    font-size: 18px;
  }

  h2 {
    font-size: 34px;
  }

  .hero-grid {
    padding-top: 46px;
  }

  .hero h1 {
    margin-bottom: 20px;
    font-size: clamp(38px, 10.8vw, 50px);
  }

  .hero h1 br:nth-child(2) {
    display: none;
  }

  .hero-lead {
    font-size: 16px;
  }

  .benefit-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px 20px;
  }

  .benefit-list li:last-child {
    grid-column: 1 / -1;
  }

  .area-selector {
    grid-template-columns: 1fr 1fr;
  }

  .area-selector button:nth-child(2) {
    border-right: 0;
  }

  .area-selector button:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line-soft);
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-visual {
    min-height: 590px;
  }

  .hero-product-image {
    width: min(76%, 350px);
  }

  .product-glow {
    top: 25px;
    width: 440px;
    height: 440px;
  }

  .recommendation-card {
    padding: 19px;
  }

  .recommendation-head {
    display: grid;
    gap: 0;
  }

  .recommendation-specs {
    gap: 8px 12px;
  }

  .recommendation-bottom strong,
  .recommendation-price strong {
    font-size: 20px;
  }

  .row-heading {
    display: block;
  }

  .row-heading .text-link {
    margin-top: 18px;
  }

  .section-heading {
    margin-bottom: 34px;
  }

  .product-row {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 0 0 28px;
  }

  .product-row > div + div {
    border-left: 0;
  }

  .product-row > div:not(.product-image-wrap) {
    padding: 0 14px;
  }

  .product-image-wrap {
    min-height: 166px;
  }

  .product-list-image {
    width: 235px;
    height: 146px;
  }

  .product-main {
    margin-bottom: 20px;
  }

  .product-price {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
  }

  .product-price .button {
    margin-top: 0;
  }

  .brand-rail {
    grid-template-columns: 1fr 1fr;
  }

  .brand-rail strong {
    border-right: 1px solid var(--line-soft);
    border-bottom: 1px solid var(--line-soft);
  }

  .brand-rail strong:nth-child(2n) {
    border-right: 0;
  }

  .brand-rail strong:last-child {
    grid-column: 1 / -1;
    border-bottom: 0;
  }

  .brands-media {
    min-height: 260px;
  }

  .installation-heading {
    display: block;
    min-height: auto;
    padding-right: 0;
  }

  .installation-heading img {
    position: static;
    width: 230px;
    height: 180px;
    margin: 20px auto -22px;
  }

  .steps-list {
    grid-template-columns: 1fr;
  }

  .steps-list li {
    min-height: auto;
  }

  .price-check-panel {
    padding: 30px 22px;
  }

  .price-check-panel > div:first-child {
    padding-left: 0;
  }

  .price-check-panel .outline-icon {
    position: static;
    margin-bottom: 18px;
  }

  .inline-form,
  .lead-form {
    grid-template-columns: 1fr;
  }

  .inline-form .button,
  .field-wide,
  .lead-form .button,
  .lead-form .form-status {
    grid-column: 1;
  }

  .inline-form .button,
  .lead-form .button {
    width: 100%;
  }

  .coverage-visual {
    min-height: 350px;
  }

  .ring-3 {
    width: 300px;
    height: 300px;
  }

  .point-region {
    right: 8%;
    bottom: 9%;
    width: 100px;
    height: 100px;
  }

  .company-details {
    padding: 26px 22px;
  }

  .company-details dl {
    grid-template-columns: 1fr;
  }

  .company-product {
    display: none;
  }

  .accordion-item button {
    min-height: 68px;
    font-size: 15px;
  }

  .lead-panel {
    padding: 34px 22px;
  }

  .lead-phone {
    font-size: 19px;
  }

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

  .footer-contact {
    grid-column: 1;
  }

  .site-footer {
    padding-bottom: 120px;
  }

  .mobile-actions {
    position: fixed;
    z-index: 90;
    right: 10px;
    bottom: 10px;
    left: 10px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 14px 40px rgba(10, 42, 100, 0.2);
    transition:
      opacity 180ms ease,
      transform 180ms ease;
  }

  .mobile-actions.is-hidden {
    pointer-events: none;
    opacity: 0;
    transform: translateY(calc(100% + 20px));
  }

  .mobile-actions a,
  .mobile-actions button {
    display: flex;
    min-height: 46px;
    align-items: center;
    justify-content: center;
    gap: 7px;
    border: 1px solid var(--blue);
    border-radius: 8px;
    background: var(--white);
    color: var(--navy);
    font-size: 13px;
    font-weight: 720;
  }

  .mobile-actions button {
    border-color: var(--green);
    background: var(--green);
    color: var(--white);
  }

  .dialog-content {
    grid-template-columns: 1fr;
    padding: 54px 22px 28px;
  }

  .dialog-product-media {
    min-height: 230px;
  }
}

@media (max-width: 390px) {
  .container {
    width: calc(100% - 24px);
  }

  .hero-grid {
    padding-top: 38px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .benefit-list {
    gap: 12px;
  }

  .benefit-list li {
    font-size: 12px;
  }

  .recommendation-card {
    bottom: 10px;
  }

  .recommendation-specs span:last-child {
    display: none;
  }

  .recommendation-bottom {
    gap: 8px;
  }

  .recommendation-bottom strong,
  .recommendation-price strong {
    font-size: 18px;
  }

  .brands-media p {
    width: 210px;
    font-size: 12px;
  }

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

@media (max-width: 370px) {
  .hero h1 {
    font-size: 35px;
  }
}

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