:root {
  --bg-dark: #08111f;
  --bg-blue: #0d2a45;
  --bg-light: #f4f7fb;
  --bg-card: #ffffff;
  --text-main: #111827;
  --text-muted: #64748b;
  --text-light: #ffffff;
  --accent: #1e88ff;
  --accent-orange: #ff8a1f;
  --line: rgba(15, 23, 42, 0.12);
  --shadow: 0 20px 50px rgba(8, 17, 31, 0.16);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text-main);
  background: var(--bg-light);
  line-height: 1.5;
  overflow-x: hidden;
}

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

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

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

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(8, 17, 31, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo img {
  width: 174px;
  height: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.btn-catalog {
  color: #111827;
  background: #fff;
}

.main-nav a:hover,
.main-nav a:focus {
  color: #fff;
}

.section {
  padding: 86px 0;
}

.section-dark {
  color: var(--text-light);
  background:
    radial-gradient(circle at 72% 20%, rgba(30, 136, 255, 0.25), transparent 34%),
    linear-gradient(135deg, var(--bg-dark), var(--bg-blue));
}

.section-soft {
  background: var(--bg-light);
}

.hero {
  padding: 82px 0 54px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 470px);
  align-items: center;
  gap: 52px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-orange);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
}

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

h1 {
  margin-bottom: 20px;
  max-width: 780px;
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1.04;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.2;
}

.lead {
  max-width: 670px;
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 20px;
}

.hero-actions,
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.badge-row {
  margin-top: 26px;
}

.badge-row span {
  padding: 9px 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.07);
  color: rgba(255, 255, 255, 0.88);
  font-size: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 14px 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 700;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.btn:hover,
.btn:focus {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: var(--accent);
}

.btn-secondary {
  color: #111827;
  background: var(--accent-orange);
}

.btn-outline {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.24);
  background: transparent;
}

.btn-small {
  min-height: 40px;
  padding: 10px 16px;
  font-size: 14px;
}

.btn-full {
  width: 100%;
}

.hero-card {
  position: relative;
  display: grid;
  gap: 18px;
}

.product-visual {
  min-height: 390px;
  display: grid;
  place-items: center;
  padding: 20px;
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.product-visual img {
  max-height: 390px;
  object-fit: contain;
  filter: drop-shadow(0 24px 36px rgba(0, 0, 0, 0.32));
}

.form {
  padding: 24px;
  border-radius: 8px;
  background: var(--bg-card);
  color: var(--text-main);
  box-shadow: var(--shadow);
}

.form h2,
.form h3 {
  margin-bottom: 18px;
}

.form-note {
  margin: -4px 0 18px;
  color: var(--text-muted);
}

.form label {
  display: grid;
  gap: 7px;
  margin-bottom: 13px;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 700;
}

.form input,
.form select,
.form textarea {
  width: 100%;
  min-height: 46px;
  padding: 12px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text-main);
  outline: none;
}

.form textarea {
  resize: vertical;
}

.form input:focus,
.form select:focus,
.form textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(30, 136, 255, 0.12);
}

.form .invalid {
  border-color: #dc2626;
}

.consent {
  grid-template-columns: 18px 1fr;
  align-items: start;
  gap: 10px;
  color: var(--text-main);
  font-weight: 400;
}

.consent input {
  min-height: 18px;
  margin-top: 2px;
}

.form-status {
  min-height: 22px;
  margin: 12px 0 0;
  color: #0f766e;
  font-size: 14px;
}

.form-status.error {
  color: #b91c1c;
}

.benefits-strip {
  margin-top: -1px;
  padding: 24px 0;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.strip-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.strip-grid article,
.feature,
.info-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.strip-grid article {
  display: grid;
  grid-template-columns: 44px 1fr;
  grid-template-rows: auto auto;
  gap: 16px;
  align-items: center;
  min-width: 0;
  min-height: 86px;
  padding: 16px 18px;
}

.strip-grid article img {
  grid-row: 1 / 3;
  width: 44px;
  align-self: center;
}

.strip-grid strong,
.strip-grid span {
  display: block;
  grid-column: 2;
  overflow-wrap: normal;
  word-break: normal;
  hyphens: none;
}

.strip-grid strong {
  align-self: end;
}

.strip-grid span {
  align-self: start;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.35;
}

.section-head {
  max-width: 780px;
  margin-bottom: 34px;
}

.section-head p:not(.eyebrow) {
  color: var(--text-muted);
  font-size: 18px;
}

.cards {
  display: grid;
  gap: 16px;
}

.cards.five {
  grid-template-columns: repeat(5, 1fr);
}

.cards.six {
  grid-template-columns: repeat(3, 1fr);
}

.info-card,
.feature {
  padding: 24px;
}

.info-card p,
.feature p,
.product-text p,
.faq-list p,
.steps span,
.final-copy p,
.compact-cta p {
  color: var(--text-muted);
}

.feature img {
  width: 46px;
  margin-bottom: 18px;
}

.product-grid {
  display: grid;
  gap: 22px;
}

.product-card {
  display: grid;
  grid-template-columns: 38% 1fr;
  gap: 28px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 36px rgba(8, 17, 31, 0.08);
}

.product-image {
  display: grid;
  place-items: center;
  min-height: 330px;
  border-radius: 8px;
  background: #f8fafc;
}

.product-image img {
  max-height: 330px;
  object-fit: contain;
}

.product-text ul {
  margin: 0 0 22px;
  padding-left: 20px;
  color: var(--text-main);
}

.product-text li {
  margin-bottom: 8px;
}

.compact-cta {
  padding: 70px 0;
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 42px;
  align-items: start;
}

.compact-cta p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 18px;
}

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

.check-list span {
  position: relative;
  padding: 13px 14px 13px 38px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.07);
}

.check-list span::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 19px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-orange);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.steps li {
  position: relative;
  min-height: 160px;
  padding: 24px 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  counter-increment: step;
}

.steps li::before {
  content: "0" counter(step);
  display: block;
  margin-bottom: 22px;
  color: var(--accent);
  font-size: 28px;
  font-weight: 800;
}

.steps strong,
.steps span {
  display: block;
}

.faq-list {
  display: grid;
  gap: 10px;
}

details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

summary {
  padding: 18px 20px;
  cursor: pointer;
  font-weight: 800;
}

details p {
  margin: 0;
  padding: 0 20px 20px;
}

.final-cta {
  background: #fff;
}

.final-grid {
  display: grid;
  grid-template-columns: 1fr minmax(340px, 460px);
  gap: 54px;
  align-items: stretch;
}

.final-copy {
  display: flex;
  flex-direction: column;
}

.equipment-slider {
  display: grid;
  grid-template-rows: 1fr auto;
  flex: 1;
  min-height: 500px;
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    radial-gradient(circle at 70% 20%, rgba(30, 136, 255, 0.16), transparent 34%),
    linear-gradient(135deg, #f8fafc, #edf4fb);
  overflow: hidden;
}

.slider-viewport {
  position: relative;
  min-height: 430px;
}

.slider-slide {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-rows: 1fr auto;
  align-items: center;
  margin: 0;
  padding: 24px 24px 18px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.slider-slide.is-active {
  opacity: 1;
  pointer-events: auto;
}

.slider-slide img {
  width: 100%;
  height: 100%;
  max-height: 420px;
  object-fit: contain;
  filter: drop-shadow(0 22px 32px rgba(8, 17, 31, 0.2));
}

.slider-slide figcaption {
  align-self: end;
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
}

.slider-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 18px 18px;
}

.slider-arrow {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--bg-dark);
  cursor: pointer;
  font-size: 28px;
  line-height: 1;
}

.slider-dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.slider-dots button {
  width: 10px;
  height: 10px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(100, 116, 139, 0.32);
  cursor: pointer;
}

.slider-dots button.is-active {
  width: 30px;
  background: var(--accent);
}

.site-footer {
  padding: 34px 0;
  color: rgba(255, 255, 255, 0.78);
  background: var(--bg-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 28px;
  align-items: start;
}

.site-footer img {
  width: 174px;
  margin-bottom: 14px;
}

address {
  font-style: normal;
}

address a {
  color: #fff;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: none;
  padding: 20px;
}

.modal.is-open {
  display: grid;
  place-items: center;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 17, 31, 0.76);
}

.modal-panel {
  position: relative;
  width: min(520px, 100%);
  max-height: calc(100vh - 40px);
  overflow: auto;
}

.modal-close {
  position: absolute;
  z-index: 2;
  top: 10px;
  right: 10px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 8px;
  color: #111827;
  background: #eef2f7;
  cursor: pointer;
  font-size: 26px;
  line-height: 1;
}

body.modal-open {
  overflow: hidden;
}

.thanks-page {
  min-height: 100vh;
  background:
    radial-gradient(circle at 72% 20%, rgba(30, 136, 255, 0.22), transparent 34%),
    linear-gradient(135deg, var(--bg-dark), var(--bg-blue));
}

.thanks-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 40px 20px;
}

.thanks-card {
  width: min(760px, 100%);
  padding: 42px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.thanks-card img {
  width: 174px;
  margin-bottom: 28px;
}

.thanks-card h1 {
  max-width: 620px;
  margin-bottom: 16px;
  color: var(--text-main);
  font-size: clamp(34px, 5vw, 56px);
}

.thanks-card p:not(.eyebrow) {
  max-width: 620px;
  color: var(--text-muted);
  font-size: 18px;
}

.thanks-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

@media (max-width: 1020px) {
  .hero-grid,
  .final-grid,
  .cta-grid {
    grid-template-columns: 1fr;
  }

  .hero-card {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .cards.five,
  .cards.six,
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-card {
    grid-template-columns: 1fr;
  }

  .product-image {
    min-height: 300px;
  }

  .main-nav {
    display: none;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .header-inner {
    min-height: 64px;
    gap: 12px;
  }

  .logo img,
  .site-footer img {
    width: 148px;
  }

  .header-actions {
    gap: 6px;
  }

  .header-actions .btn {
    min-height: 34px;
    padding: 8px 10px;
    font-size: 12px;
  }

  .section {
    padding: 58px 0;
  }

  .hero {
    padding: 58px 0 42px;
  }

  .hero-grid {
    gap: 28px;
  }

  .hero-card,
  .strip-grid,
  .cards.five,
  .cards.six,
  .steps,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 34px;
  }

  h2 {
    font-size: 28px;
  }

  .lead {
    font-size: 18px;
  }

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

  .product-visual {
    min-height: 260px;
  }

  .product-visual img,
  .product-image img {
    max-height: 260px;
  }

  .product-card,
  .form {
    padding: 20px;
  }

  .strip-grid article {
    min-height: 78px;
    padding: 14px;
  }

  .equipment-slider {
    min-height: 390px;
  }

  .slider-viewport {
    min-height: 320px;
  }

  .slider-slide {
    padding: 18px 16px 12px;
  }

  .slider-slide img {
    max-height: 300px;
  }

  .thanks-card {
    padding: 26px 20px;
  }

  .thanks-actions .btn {
    width: 100%;
  }
}