:root {
  --navy: #172442;
  --navy-2: #101a33;
  --navy-3: #0c1528;
  --teal: #079ca8;
  --teal-dark: #087fa6;
  --teal-glow: rgba(7, 156, 168, 0.22);
  --teal-subtle: rgba(7, 156, 168, 0.08);
  --white: #fff;
  --off-white: #f3f6f8;
  --bg: #e9eef4;
  --ink: #172442;
  --muted: #4b5563;
  --line: #dfe6ec;
  --radius: 20px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(23, 36, 66, 0.07);
  --shadow-lg: 0 20px 60px rgba(23, 36, 66, 0.12);
  --font-h: "Montserrat", sans-serif;
  --font-b: "Inter", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}
*,
::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-b);
  color: var(--ink);
  line-height: 1.6;
  background: var(--white);
}
a {
  text-decoration: none;
  color: inherit;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
.container {
  width: min(1160px, calc(100% - 48px));
  margin: auto;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 21px;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-h);
  font-size: 0.8rem;
  font-weight: 700;
  transition:
    transform 0.25s var(--ease),
    background 0.25s;
}
.btn:hover {
  transform: translateY(-3px);
}
.btn-primary {
  background: var(--teal);
  color: #fff;
  box-shadow: var(--shadow);
}
.btn-primary:hover {
  background: var(--teal-dark);
}
.btn-outline {
  border: 1px solid #ffffff;
  color: #fff;
  background: transparent;
}
.btn-outline:hover {
  background: #fff;
  color: var(--navy);
  border-color: #fff;
  transform: translateY(-3px);
}
.header {
  position: absolute;
  z-index: 2;
  top: 0;
  left: 0;
  right: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.header.scrolled {
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.header.scrolled .back {
  color: var(--ink);
}
.header.scrolled .back:hover {
  color: var(--teal);
}
.header.scrolled .brand img {
  filter: none;
}
.header-row {
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}
.brand img {
  width: 185px;
}
.back {
  color: #d8e7ef;
  font-family: var(--font-h);
  font-size: 0.8rem;
  font-weight: 700;
}
.back i {
  color: var(--teal);
  margin-right: 8px;
}
.back:hover {
  color: #fff;
}
.hero {
  position: relative;
  overflow: hidden;
  padding: 160px 0 90px;
  color: #fff;
  background: linear-gradient(
    115deg,
    rgba(23, 36, 66, 0.98),
    rgba(23, 36, 66, 0.9) 56%,
    rgba(7, 156, 168, 0.52)
  );
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(90deg, #000, transparent);
  opacity: 0.28;
}
.hero .container {
  position: relative;
  z-index: 1;
}
.crumb {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #c7e4e8;
  font-size: 0.78rem;
}
.crumb i {
  font-size: 0.55rem;
  color: var(--teal);
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 24px;
  color: #8cf0f2;
  font-family: var(--font-h);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}
.kicker::before {
  content: "";
  width: 30px;
  height: 2px;
  background: var(--teal);
}
.hero h1 {
  margin: 12px 0;
  font-family: var(--font-h);
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  line-height: 1;
  letter-spacing: -0.05em;
}
.hero p {
  max-width: 620px;
  color: #d8e5ed;
  font-size: 1rem;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 26px;
}
.product {
  padding: 86px 0;
}
.product-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(48px, 8vw, 100px);
  align-items: start;
}
.gallery {
  position: relative;
}
.gallery::before {
  content: "";
  position: absolute;
  top: -17px;
  left: -17px;
  width: 100px;
  height: 100px;
  border-top: 2px solid var(--teal);
  border-left: 2px solid var(--teal);
}
.gallery-main {
  position: relative;
  padding: 30px;
  background: linear-gradient(145deg, #eaf7f8, #fff 70%);
  box-shadow: var(--shadow-lg);
}
.gallery-main::after {
  content: "IMPEL SCREEN";
  position: absolute;
  top: 18px;
  right: 20px;
  color: var(--teal-dark);
  font-family: var(--font-h);
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}
.gallery-main img {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: contain;
  mix-blend-mode: multiply;
}
.model-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--teal-dark);
  font-family: var(--font-h);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.model-tag::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--teal);
}
.details h2 {
  margin: 13px 0 14px;
  color: var(--navy);
  font-family: var(--font-h);
  font-size: clamp(2rem, 4.2vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.05em;
}
.lead {
  color: var(--muted);
  font-size: 1rem;
}
.feature-list {
  display: grid;
  gap: 12px;
  margin: 27px 0;
  list-style: none;
}
.feature-list li {
  display: flex;
  gap: 11px;
  align-items: flex-start;
  color: #3f4e5e;
  font-size: 0.88rem;
}
.feature-list i {
  color: var(--teal);
  margin-top: 4px;
}
.feature-list strong {
  color: var(--navy);
}
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 26px 0;
  background: var(--off-white);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}
.spec-table th,
.spec-table td {
  padding: 12px 15px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 0.84rem;
}
.spec-table tr:last-child th,
.spec-table tr:last-child td {
  border: 0;
}
.spec-table th {
  width: 46%;
  color: var(--navy);
  font-family: var(--font-h);
  font-size: 0.75rem;
}
.spec-table td {
  color: var(--muted);
  font-weight: 700;
}
.data-sheet {
  padding: 76px 0;
  background: var(--bg);
}
.section-head {
  max-width: 680px;
  margin: 0 auto 34px;
  text-align: center;
}
.section-head span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--teal-dark);
  font-family: var(--font-h);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.section-head span::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--teal);
}
.section-head h2 {
  margin-top: 12px;
  font-family: var(--font-h);
  font-size: clamp(1.7rem, 3.5vw, 2.5rem);
  color: var(--navy);
  line-height: 1.12;
}
.sheet-frame {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.sheet-frame img {
  width: 100%;
  display: block;
}
.cta {
  padding: 72px 0;
  background: linear-gradient(
    120deg,
    var(--navy),
    var(--navy-2) 58%,
    var(--teal-dark)
  );
  color: #fff;
  text-align: center;
}
.cta h2 {
  font-family: var(--font-h);
  font-size: clamp(1.7rem, 3.5vw, 2.5rem);
  line-height: 1.1;
}
.cta p {
  max-width: 580px;
  margin: 14px auto 26px;
  color: #cfdeeb;
}
.footer {
  padding: 34px 0;
  background: var(--navy-3);
  color: #9eb3c8;
}
.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  flex-wrap: wrap;
  font-size: 0.78rem;
}
.footer img {
  width: 160px;
}
.footer a:hover {
  color: var(--teal);
}
@media (max-width: 800px) {
  .product-grid {
    grid-template-columns: 1fr;
    gap: 52px;
  }
  .gallery {
    max-width: 650px;
  }
  .product {
    padding: 66px 0;
  }
}
@media (max-width: 560px) {
  .container {
    width: min(100% - 40px, 1160px);
  }
  .header-row {
    height: 70px;
  }
  .brand img {
    width: 155px;
  }
  .back {
    font-size: 0.72rem;
  }
  .hero {
    padding: 132px 0 66px;
  }
  .hero p {
    font-size: 0.94rem;
  }
  .feature-list {
    gap: 10px;
  }
  .spec-table th,
  .spec-table td {
    padding: 10px;
    font-size: 0.75rem;
  }
  .data-sheet,
  .cta {
    padding: 62px 0;
  }
  .footer-row {
    justify-content: center;
    text-align: center;
  }
  .footer img {
    margin: auto;
  }
}