:root {
  --ink: #10201f;
  --muted: #5c6f6c;
  --panel: #ffffff;
  --line: #dbe7e3;
  --bg: #f4f8f6;
  --teal: #0f766e;
  --teal-dark: #0b4f4a;
  --blue: #2563eb;
  --warm: #f59e0b;
  --shadow: 0 22px 60px rgba(16, 32, 31, 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
}

a { color: inherit; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px clamp(18px, 4vw, 56px);
  color: white;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px;
  border-radius: 999px;
  background: rgba(5, 18, 17, 0.28);
  backdrop-filter: blur(16px);
}

.nav a {
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  padding: 9px 12px;
  border-radius: 999px;
}

.nav a:hover { background: rgba(255, 255, 255, 0.14); }

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  padding: 120px clamp(20px, 6vw, 84px) 72px;
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(4, 22, 21, 0.9) 0%, rgba(4, 22, 21, 0.66) 38%, rgba(4, 22, 21, 0.1) 78%),
    linear-gradient(180deg, rgba(4, 22, 21, 0.48) 0%, rgba(4, 22, 21, 0.06) 50%, rgba(4, 22, 21, 0.62) 100%);
}

.hero-content {
  position: relative;
  max-width: 760px;
  color: white;
}

.eyebrow {
  margin: 0 0 12px;
  color: #4fd1c5;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p { letter-spacing: 0; }

h1 {
  margin: 0;
  font-size: clamp(44px, 7vw, 86px);
  line-height: 0.98;
  max-width: 820px;
}

h2 {
  margin: 0;
  font-size: clamp(31px, 4.5vw, 56px);
  line-height: 1.04;
}

h3 {
  margin: 18px 0 10px;
  font-size: 22px;
}

.hero-copy {
  max-width: 650px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-note {
  margin: 16px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 800;
}

.button.primary {
  background: #ffffff;
  color: var(--teal-dark);
}

.button.secondary {
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.38);
}

.trust-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

.trust-band div {
  background: white;
  padding: 24px clamp(18px, 3vw, 36px);
}

.trust-band strong,
.trust-band span {
  display: block;
}

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

.section {
  padding: clamp(64px, 9vw, 116px) clamp(20px, 6vw, 84px);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(30px, 6vw, 86px);
  align-items: start;
}

.copy {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.72;
}

.section-head {
  max-width: 850px;
  margin-bottom: 30px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.kit-section {
  background: white;
}

.kit-layout {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 18px;
  align-items: stretch;
}

.price-card {
  padding: 28px;
  border-radius: 8px;
  color: white;
  background: linear-gradient(135deg, var(--teal-dark), var(--teal));
  box-shadow: var(--shadow);
}

.price-card strong {
  display: block;
  margin-top: 8px;
  font-size: 62px;
  line-height: 1;
}

.price-card p {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.55;
}

.price-label {
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 13px;
}

.price-button {
  margin-top: 14px;
  color: var(--teal-dark);
}

.kit-copy {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbfa;
}

.included-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.included-grid article {
  min-height: 180px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.included-grid strong,
.included-grid span {
  display: block;
}

.included-grid span {
  margin-top: 9px;
  color: var(--muted);
  line-height: 1.58;
}

.hardware-section {
  background: #ffffff;
}

.hardware-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, 1fr);
  gap: 14px;
}

.hardware-card {
  min-height: 230px;
  padding: 24px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #f8fbfa;
}

.hardware-card.featured {
  color: white;
  background: linear-gradient(135deg, var(--teal-dark), var(--teal));
  border-color: transparent;
}

.hardware-card p {
  color: var(--muted);
  line-height: 1.62;
}

.hardware-card.featured p {
  color: rgba(255, 255, 255, 0.8);
}

.text-link {
  display: inline-flex;
  margin-top: 12px;
  font-weight: 900;
  color: inherit;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.light-link {
  color: rgba(255, 255, 255, 0.88);
}

.feature-card {
  min-height: 260px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 12px 34px rgba(16, 32, 31, 0.06);
}

.feature-card p {
  color: var(--muted);
  line-height: 1.62;
  margin: 0;
}

.icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: white;
  background: var(--teal);
  font-weight: 900;
}

.dark {
  color: white;
  background: #092b29;
}

.dark .eyebrow { color: #5eead4; }

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.metrics-grid div {
  padding: 22px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.13);
}

.metrics-grid strong,
.metrics-grid span,
.signal-list strong,
.signal-list span {
  display: block;
}

.metrics-grid span {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.55;
}

.signal-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.signal-list div {
  min-height: 150px;
  padding: 20px;
  border-radius: 8px;
  background: white;
  border: 1px solid var(--line);
}

.signal-list span {
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.55;
}

.check-list {
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.check-list.compact {
  margin-top: 10px;
}

.check-list li {
  padding: 12px 14px;
  border-radius: 8px;
  background: white;
  border: 1px solid var(--line);
  color: var(--ink);
  font-weight: 700;
}

.cta {
  text-align: center;
  background: white;
}

.notice-section {
  background: #fffaf0;
  border-top: 1px solid #fde7b8;
  border-bottom: 1px solid #fde7b8;
}

.contact-section {
  background: #ffffff;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.contact-grid article {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbfa;
}

.contact-grid strong,
.contact-grid a {
  display: block;
}

.contact-grid a {
  margin-top: 8px;
  color: var(--teal-dark);
  font-weight: 900;
  overflow-wrap: anywhere;
}

.notice-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(30px, 6vw, 86px);
}

.cta p {
  max-width: 680px;
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.footer {
  padding: 28px clamp(20px, 6vw, 84px);
  color: rgba(255, 255, 255, 0.74);
  background: #061b1a;
}

.footer p {
  max-width: 900px;
  margin: 0;
  line-height: 1.6;
}

@media (max-width: 980px) {
  .site-header {
    position: absolute;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    max-width: 100%;
    overflow-x: auto;
  }

  .hero {
    min-height: 860px;
    align-items: end;
  }

  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(4, 22, 21, 0.48) 0%, rgba(4, 22, 21, 0.54) 36%, rgba(4, 22, 21, 0.92) 100%);
  }

  .trust-band,
  .kit-layout,
  .included-grid,
  .contact-grid,
  .hardware-grid,
  .feature-grid,
  .metrics-grid,
  .signal-list,
  .split {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 16px;
  }

  .brand {
    font-size: 15px;
  }

  .nav a {
    font-size: 13px;
    padding: 8px 10px;
  }

  .hero {
    min-height: 820px;
    padding: 150px 18px 44px;
  }

  .hero-copy {
    font-size: 17px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .trust-band,
  .kit-layout,
  .included-grid,
  .notice-grid,
  .hardware-grid,
  .feature-grid,
  .metrics-grid,
  .signal-list,
  .split {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 58px 18px;
  }

  .feature-card {
    min-height: auto;
  }
}