:root {
  --black: #03050b;
  --navy: #071527;
  --blue: #23a8ff;
  --purple: #8d5cff;
  --green: #18d18c;
  --cyan: #45d7ff;
  --white: #ffffff;
  --muted: rgba(255,255,255,0.72);
  --soft: #eef6ff;
  --dark-card: rgba(255,255,255,0.07);
  --border: rgba(255,255,255,0.16);
}

* { box-sizing: border-box; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", Arial, sans-serif;
  color: var(--white);
  background: var(--black);
  padding-top: 92px;
}

.container {
  width: min(1180px, 92%);
  margin: 0 auto;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 9999;
  background: rgba(0,0,0,0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  min-height: 92px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.brand img {
  height: 74px;
  width: auto;
  display: block;
}

.nav-tabs {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-tab,
.quote-btn {
  color: var(--white);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 800;
  padding: 12px 17px;
  border-radius: 999px;
  transition: 0.25s ease;
  white-space: nowrap;
}

.nav-tab {
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.05);
}

.nav-tab:hover,
.nav-tab.active {
  background: linear-gradient(135deg, var(--blue), var(--purple));
  border-color: transparent;
}

.quote-btn,
.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--purple), var(--green));
  color: var(--white);
  box-shadow: 0 0 28px rgba(35,168,255,0.28);
}

.quote-btn:hover,
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 38px rgba(141,92,255,0.38);
}

.menu-btn {
  display: none;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  color: var(--white);
  border: 0;
  border-radius: 12px;
  font-size: 1.4rem;
  padding: 10px 14px;
}

.hero {
  min-height: calc(100vh - 92px);
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 80% 30%, rgba(35,168,255,0.22), transparent 35%),
    radial-gradient(circle at 30% 70%, rgba(141,92,255,0.2), transparent 32%),
    linear-gradient(135deg, #03050b, #071527 58%, #000);
}

.hero::after,
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(120deg, transparent, rgba(255,255,255,0.04), transparent);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  gap: 50px;
  align-items: center;
  min-height: calc(100vh - 92px);
  padding: 56px 0;
  position: relative;
  z-index: 1;
}

.eyebrow,
.section-label {
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-weight: 900;
  background: linear-gradient(90deg, var(--purple), var(--blue), var(--green));
  -webkit-background-clip: text;
  color: transparent;
}

.hero h1,
.page-hero h1 {
  font-family: "Anton", Impact, sans-serif;
  font-size: clamp(3rem, 7vw, 6.5rem);
  line-height: 0.94;
  letter-spacing: 0.01em;
  margin: 16px 0 24px;
  text-transform: uppercase;
}

.hero p,
.page-intro {
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.7;
  max-width: 680px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 34px;
}

.btn-primary,
.btn-outline {
  display: inline-block;
  border: 0;
  border-radius: 999px;
  padding: 15px 28px;
  font-weight: 900;
  text-decoration: none;
  cursor: pointer;
}

.btn-outline {
  color: var(--white);
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
}

.btn-outline:hover {
  background: var(--white);
  color: var(--black);
}

.hero-visual img {
  width: 100%;
  border-radius: 34px;
  box-shadow: 0 30px 90px rgba(0,0,0,0.55), 0 0 60px rgba(35,168,255,0.18);
}

.feature-strip {
  background: linear-gradient(90deg, var(--purple), var(--blue), var(--green));
  padding: 24px 0;
}

.strip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  text-align: center;
  color: #fff;
  font-weight: 900;
}

.section {
  padding: 105px 0;
  background: var(--black);
}

.section.light {
  background: var(--soft);
  color: #071527;
}

.section.dark,
.cta-section {
  background:
    radial-gradient(circle at 80% 10%, rgba(35,168,255,0.22), transparent 30%),
    linear-gradient(135deg, #03050b, #071527);
}

.section-head {
  max-width: 840px;
  margin-bottom: 46px;
}

.center {
  text-align: center;
}

.center .section-head,
.section-head.center {
  margin-left: auto;
  margin-right: auto;
}

.section h2,
.contact-grid h2 {
  font-family: "Anton", Impact, sans-serif;
  font-size: clamp(2.3rem, 5vw, 4.4rem);
  line-height: 0.96;
  text-transform: uppercase;
  margin: 10px 0 20px;
}

.section p,
.product-card p,
.product-detail p,
.contact-grid p {
  color: var(--muted);
  line-height: 1.7;
}

.light p,
.light .product-card p {
  color: #425366;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.product-card,
.faq-item,
.contact-form,
.contact-card,
.table-card,
.advantage-grid div {
  background: var(--dark-card);
  border: 1px solid var(--border);
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 22px 60px rgba(0,0,0,0.22);
}

.product-card {
  transition: 0.3s ease;
}

.product-card:hover {
  transform: translateY(-8px);
}

.product-card img {
  width: 100%;
  height: 310px;
  object-fit: cover;
  display: block;
}

.product-card div {
  padding: 28px;
}

.product-card h3,
.product-detail h2,
.faq-item h3,
.advantage-grid h3 {
  font-weight: 900;
  margin: 0 0 12px;
}

.product-card strong {
  display: block;
  color: var(--cyan);
  margin: 18px 0;
}

.product-card a {
  color: var(--green);
  font-weight: 900;
  text-decoration: none;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 54px;
  align-items: center;
}

.tick-list {
  display: grid;
  gap: 14px;
  margin: 28px 0 32px;
}

.tick-list span {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
}

.tick-list span::before {
  content: "✓";
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--green));
}

.image-frame img {
  width: 100%;
  border-radius: 30px;
  box-shadow: 0 30px 90px rgba(0,0,0,0.45);
}

.gallery-preview,
.gallery-grid {
  display: grid;
  gap: 24px;
}

.gallery-preview {
  grid-template-columns: repeat(2, 1fr);
}

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

.gallery-preview img,
.gallery-grid img {
  width: 100%;
  min-height: 310px;
  height: 100%;
  object-fit: cover;
  border-radius: 28px;
  box-shadow: 0 22px 60px rgba(0,0,0,0.18);
}

.cta-section h2 {
  max-width: 880px;
  margin-left: auto;
  margin-right: auto;
}

.page-hero {
  position: relative;
  padding: 120px 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(35,168,255,0.25), transparent 34%),
    linear-gradient(135deg, #03050b, #071527 70%, #000);
  overflow: hidden;
}

.product-detail-list {
  display: grid;
  gap: 70px;
}

.product-detail {
  display: grid;
  grid-template-columns: 0.95fr 1fr;
  gap: 46px;
  align-items: center;
  padding: 34px;
  background: var(--dark-card);
  border: 1px solid var(--border);
  border-radius: 34px;
}

.product-detail.reverse {
  grid-template-columns: 1fr 0.95fr;
}

.product-detail.reverse img {
  order: 2;
}

.product-detail img {
  width: 100%;
  border-radius: 28px;
}

.product-detail ul {
  color: rgba(255,255,255,0.82);
  line-height: 1.9;
  padding-left: 20px;
  margin-bottom: 28px;
}

.comparison-wrap {
  display: grid;
  grid-template-columns: 0.55fr 1fr;
  gap: 40px;
  align-items: start;
}

.table-card {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

th,
td {
  padding: 18px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

th {
  background: linear-gradient(90deg, rgba(35,168,255,0.28), rgba(141,92,255,0.22));
  color: #fff;
}

td:nth-child(2) {
  color: var(--green);
  font-weight: 900;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.advantage-grid div {
  padding: 28px;
}

.small {
  max-width: 880px;
}

.faq-item {
  padding: 28px;
  margin-bottom: 18px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.75fr 1fr;
  gap: 50px;
}

.contact-card {
  padding: 26px;
  margin-top: 24px;
}

.contact-form {
  padding: 32px;
  display: grid;
  gap: 15px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.08);
  color: #fff;
  padding: 16px;
  font: inherit;
}

.contact-form option {
  color: #000;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(255,255,255,0.62);
}

.form-message {
  margin: 0;
  color: var(--green) !important;
  font-weight: 900;
}

.site-footer {
  background: #000;
  border-top: 1px solid var(--border);
  color: rgba(255,255,255,0.72);
}

.footer-grid {
  padding: 58px 0;
  display: grid;
  grid-template-columns: 1.4fr 0.6fr 1fr;
  gap: 34px;
}

.footer-logo {
  width: 210px;
  max-width: 100%;
}

.site-footer a {
  color: rgba(255,255,255,0.75);
  display: block;
  margin: 10px 0;
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--cyan);
}

.footer-bottom {
  text-align: center;
  padding: 22px;
  border-top: 1px solid var(--border);
}

.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 0;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  font-weight: 900;
  display: none;
  z-index: 1000;
}

.back-to-top.show {
  display: block;
}

@media (max-width: 1050px) {
  body {
    padding-top: 82px;
  }

  .nav-wrap {
    min-height: 82px;
  }

  .brand img {
    height: 62px;
  }

  .menu-btn {
    display: block;
  }

  .nav-tabs {
    display: none;
    position: absolute;
    top: 82px;
    left: 0;
    width: 100%;
    background: #000;
    padding: 18px;
    flex-direction: column;
    align-items: stretch;
  }

  .nav-tabs.show {
    display: flex;
  }

  .nav-tab,
  .quote-btn {
    text-align: center;
  }

  .hero-grid,
  .split,
  .product-detail,
  .product-detail.reverse,
  .comparison-wrap,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .product-detail.reverse img {
    order: 0;
  }

  .product-grid,
  .gallery-grid,
  .advantage-grid,
  .strip-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 680px) {
  .hero h1,
  .page-hero h1 {
    font-size: 3rem;
  }

  .section {
    padding: 74px 0;
  }

  .product-grid,
  .gallery-preview,
  .gallery-grid,
  .advantage-grid,
  .strip-grid {
    grid-template-columns: 1fr;
  }

  .product-card img {
    height: 250px;
  }
}


.contact-card a,
.site-footer a[href^="mailto:"],
.site-footer a[href^="tel:"] {
  color: var(--cyan);
  font-weight: 800;
  text-decoration: none;
}

.contact-card a:hover,
.site-footer a[href^="mailto:"]:hover,
.site-footer a[href^="tel:"]:hover {
  color: var(--green);
}

.seo-list {
  color: rgba(255,255,255,0.82);
  line-height: 1.9;
  margin: 26px 0 30px;
  padding-left: 22px;
}
.light .seo-list { color: #425366; }
.advantage-grid a {
  color: var(--green);
  font-weight: 900;
  text-decoration: none;
}
.light .advantage-grid div {
  background: #ffffff;
  color: #071527;
  border: 1px solid rgba(7,21,39,0.08);
}
.light .advantage-grid h3 { color: #071527; }
.light .advantage-grid p { color: #425366; }