:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --surface: #ffffff;
  --ink: #16202a;
  --muted: #5b6875;
  --line: #dce4ec;
  --blue: #146c94;
  --cyan: #28a6c7;
  --orange: #f47a21;
  --green: #4b8b5b;
  --dark: #121923;
  --shadow: 0 18px 45px rgba(18, 25, 35, 0.12);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(18px, 4vw, 56px);
  background: rgba(246, 248, 251, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: #fff;
  background: var(--dark);
  border: 2px solid var(--orange);
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 3vw, 28px);
  color: var(--muted);
  font-size: 0.95rem;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--blue);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  min-height: calc(100vh - 68px);
  align-items: center;
  gap: clamp(26px, 5vw, 70px);
  padding: clamp(36px, 6vw, 78px) clamp(18px, 4vw, 56px) 32px;
}

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

.eyebrow,
.tag {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 20px;
  font-size: clamp(2.45rem, 5vw, 5.25rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.18rem;
  line-height: 1.18;
}

.hero-text,
.section-head p,
.page-hero p,
.split p,
.product-body p,
.kit-row p {
  color: var(--muted);
}

.hero-text {
  max-width: 620px;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button,
.paypal-button {
  min-height: 44px;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  font: inherit;
  font-weight: 800;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

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

.primary {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 10px 24px rgba(20, 108, 148, 0.26);
}

.secondary {
  color: var(--ink);
  background: #e7edf3;
}

.hero-image {
  width: 100%;
  min-height: 360px;
  max-height: 680px;
  object-fit: cover;
  object-position: center;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 0 clamp(18px, 4vw, 56px);
  background: var(--line);
  border: 1px solid var(--line);
}

.strip div {
  padding: 22px;
  background: var(--surface);
}

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

.strip span {
  margin-top: 5px;
  color: var(--muted);
}

.section {
  padding: clamp(58px, 8vw, 108px) clamp(18px, 4vw, 56px);
}

.section-head {
  max-width: 760px;
  margin-bottom: 28px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 10px 28px rgba(18, 25, 35, 0.07);
}

.featured-card {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: minmax(280px, 0.94fr) minmax(0, 1fr);
}

.product-media {
  position: relative;
  min-height: 210px;
  background: var(--dark);
}

.product-media::before,
.product-media::after {
  position: absolute;
  content: "";
}

.product-gallery {
  display: grid;
  grid-template-rows: minmax(350px, 1fr) 104px;
  gap: 8px;
  padding: 8px;
  background: #eef3f7;
}

.product-main-photo,
.product-thumbs img {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 6px;
  background: #ffffff;
  object-fit: cover;
  object-position: center;
}

.product-main-photo {
  min-height: 350px;
}

.product-thumbs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.media-submarine {
  overflow: hidden;
  background:
    radial-gradient(circle at 78% 71%, #ffc439 0 34px, transparent 35px),
    radial-gradient(circle at 89% 71%, #ffc439 0 34px, transparent 35px),
    linear-gradient(150deg, #eef3f7 0%, #ffffff 56%, #d9e7ef 100%);
}

.media-submarine::before {
  left: 8%;
  right: 22%;
  top: 36%;
  height: 96px;
  background:
    radial-gradient(circle at 18% 50%, #1d285f 0 57px, transparent 58px),
    linear-gradient(90deg, transparent 0 11%, #1d285f 11% 100%);
  border-radius: 60px 26px 26px 60px;
  box-shadow: inset 0 -14px 0 rgba(0, 0, 0, 0.16);
}

.media-submarine::after {
  left: 38%;
  top: 25%;
  width: 82px;
  height: 86px;
  background:
    linear-gradient(#1d285f, #1d285f) 28px 0 / 34px 76px no-repeat,
    linear-gradient(#1d285f, #1d285f) 0 64px / 116px 22px no-repeat;
  border-radius: 12px 12px 0 0;
}

.media-circuit {
  background:
    radial-gradient(circle at 25% 28%, var(--cyan) 0 4px, transparent 5px),
    radial-gradient(circle at 65% 58%, var(--orange) 0 5px, transparent 6px),
    linear-gradient(90deg, transparent 48%, rgba(255,255,255,0.24) 49% 51%, transparent 52%),
    linear-gradient(0deg, transparent 48%, rgba(255,255,255,0.18) 49% 51%, transparent 52%),
    var(--dark);
  background-size: auto, auto, 42px 42px, 42px 42px, auto;
}

.media-circuit::before {
  inset: 48px 30px;
  border: 2px solid rgba(40, 166, 199, 0.75);
}

.media-robot {
  background:
    radial-gradient(circle at 30% 70%, var(--orange) 0 34px, transparent 35px),
    radial-gradient(circle at 70% 70%, var(--orange) 0 34px, transparent 35px),
    linear-gradient(160deg, #1f2b38, #121923);
}

.media-robot::before {
  left: 19%;
  right: 19%;
  top: 40px;
  height: 82px;
  border: 3px solid rgba(255, 255, 255, 0.8);
  border-radius: 6px;
}

.media-gear {
  background:
    radial-gradient(circle at 35% 52%, transparent 0 23px, var(--orange) 24px 38px, transparent 39px),
    radial-gradient(circle at 61% 44%, transparent 0 20px, var(--cyan) 21px 34px, transparent 35px),
    linear-gradient(150deg, #24303d, #121923);
}

.media-gear::before {
  inset: 32px;
  border: 2px dashed rgba(255, 255, 255, 0.48);
  border-radius: 8px;
}

.product-body {
  padding: 22px;
}

.featured-card .product-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(24px, 4vw, 42px);
}

.featured-card h3 {
  font-size: clamp(1.55rem, 3vw, 2.3rem);
}

.product-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.product-specs li {
  padding: 7px 10px;
  color: var(--ink);
  font-size: 0.86rem;
  font-weight: 800;
  background: #eef3f7;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.product-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 24px;
}

.product-meta span {
  font-weight: 900;
}

.paypal-button {
  min-width: 150px;
  color: var(--dark);
  background: #ffc439;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.7fr);
  align-items: center;
  gap: clamp(24px, 5vw, 64px);
}

.ops-panel {
  border-left: 5px solid var(--orange);
  padding: 24px;
  background: var(--surface);
}

.ops-panel ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.ops-panel li + li {
  margin-top: 8px;
}

.page-hero {
  padding: clamp(54px, 8vw, 116px) clamp(18px, 4vw, 56px) clamp(28px, 5vw, 52px);
  background: linear-gradient(135deg, #ffffff 0%, #eef5f8 55%, #f9efe6 100%);
}

.page-hero h1,
.page-hero p {
  max-width: 880px;
}

.kit-list {
  display: grid;
  gap: 14px;
}

.kit-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.46fr);
  gap: 24px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.kit-row dl {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 0;
  align-self: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--line);
}

.kit-row dl div {
  padding: 14px;
  background: #fbfcfd;
}

.kit-row dt {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.kit-row dd {
  margin: 5px 0 0;
  font-weight: 900;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px clamp(18px, 4vw, 56px);
  color: #d8e2ea;
  background: var(--dark);
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 40;
  max-width: min(360px, calc(100vw - 36px));
  padding: 14px 16px;
  color: #fff;
  background: var(--dark);
  border-left: 5px solid #ffc439;
  border-radius: 6px;
  box-shadow: var(--shadow);
}

@media (max-width: 920px) {
  .hero,
  .split,
  .kit-row {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
  }

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

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

  .product-gallery {
    grid-template-rows: minmax(250px, auto) 92px;
  }

  .product-main-photo {
    min-height: 250px;
  }

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

@media (max-width: 620px) {
  .site-header,
  .nav,
  .footer,
  .product-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-header {
    position: static;
  }

  .hero-image {
    min-height: 260px;
  }

  .kit-row dl {
    grid-template-columns: 1fr;
  }

  .button,
  .paypal-button {
    width: 100%;
  }
}