@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Oswald:wght@600;700&display=swap");

:root {
  --ink: #142021;
  --muted: #5d6b67;
  --paper: #f4efe6;
  --soft: #e8dfd0;
  --line: #c8bda8;
  --green: #1f7f4c;
  --teal: #287e8d;
  --navy: #10242a;
  --bronze: #a8743e;
  --danger: #9b3e2e;
  --radius: 8px;
  --shadow: 0 20px 60px rgba(16, 36, 42, 0.18);
  color-scheme: light;
  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;
  color: var(--ink);
  background: var(--paper);
}

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

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  min-height: 72px;
  padding: 0 clamp(18px, 4vw, 56px);
  background: rgba(244, 239, 230, 0.94);
  border-bottom: 1px solid rgba(200, 189, 168, 0.72);
  backdrop-filter: blur(16px);
}

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

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: conic-gradient(from 30deg, var(--green), var(--teal), var(--bronze), var(--green));
  box-shadow: inset 0 0 0 5px #f4efe6;
}

.site-nav nav {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.nav-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fffaf1;
  color: var(--ink);
  font-weight: 800;
}

.btn.primary,
.nav-cta {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.hero {
  position: relative;
  min-height: calc(100vh - 72px);
  display: grid;
  align-items: end;
  padding: clamp(36px, 6vw, 78px);
  overflow: hidden;
  background: var(--navy);
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(16, 36, 42, 0.92) 0%, rgba(16, 36, 42, 0.74) 42%, rgba(16, 36, 42, 0.18) 100%);
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: saturate(0.95) contrast(1.04);
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 760px;
  color: #fff8eb;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--bronze);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  font-family: Oswald, Impact, sans-serif;
  letter-spacing: 0;
  line-height: 1;
}

h1 {
  font-size: clamp(58px, 12vw, 148px);
}

h2 {
  font-size: clamp(34px, 5vw, 72px);
}

h3 {
  margin: 0 0 10px;
  font-size: 19px;
}

.lead {
  max-width: 720px;
  margin: 18px 0 0;
  color: #e8dfd0;
  font-size: 20px;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.signal-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

.signal-band div {
  padding: 28px clamp(20px, 4vw, 56px);
  background: #fffaf1;
}

.signal-band strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
}

.signal-band span,
p,
li {
  color: var(--muted);
  line-height: 1.65;
}

.section,
.split-section {
  padding: clamp(54px, 7vw, 96px) clamp(18px, 5vw, 72px);
}

.section-head {
  max-width: 900px;
  margin-bottom: 32px;
}

.section-head p:not(.eyebrow) {
  max-width: 820px;
  font-size: 18px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.feature-grid article {
  min-height: 230px;
  padding: 26px;
  background: #fffaf1;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.feature-grid span {
  display: inline-block;
  margin-bottom: 34px;
  color: var(--bronze);
  font-weight: 900;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  gap: clamp(28px, 5vw, 74px);
  align-items: center;
}

.split-section p {
  max-width: 760px;
  font-size: 18px;
}

.check-panel,
.price-card {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fffaf1;
  box-shadow: var(--shadow);
}

.check-panel ul {
  margin: 14px 0 0;
  padding-left: 20px;
}

.dark {
  color: #fff8eb;
  background: var(--navy);
}

.dark h2,
.dark h3 {
  color: #fff8eb;
}

.dark p,
.dark span {
  color: #c8d2cf;
}

.sensor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.sensor-grid div {
  min-height: 160px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.06);
}

.sensor-grid strong {
  display: block;
  margin-bottom: 12px;
  color: #fff8eb;
  font-size: 34px;
  font-family: Oswald, Impact, sans-serif;
}

.price-card span {
  color: var(--bronze);
  font-weight: 900;
  text-transform: uppercase;
  font-size: 12px;
}

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(18px, 5vw, 72px);
  background: #fffaf1;
  border-top: 1px solid var(--line);
}

footer div {
  display: grid;
  gap: 4px;
}

footer span {
  color: var(--muted);
}

@media (max-width: 980px) {
  .site-nav nav {
    display: none;
  }

  .hero {
    min-height: 720px;
  }

  .hero-media::after {
    background: linear-gradient(180deg, rgba(16, 36, 42, 0.92), rgba(16, 36, 42, 0.62));
  }

  .signal-band,
  .feature-grid,
  .split-section,
  .sensor-grid {
    grid-template-columns: 1fr;
  }

  .feature-grid article {
    min-height: auto;
  }
}

@media (max-width: 560px) {
  .site-nav {
    min-height: 64px;
  }

  .brand span:last-child {
    display: none;
  }

  .hero {
    padding: 28px 18px;
  }

  .lead {
    font-size: 17px;
  }

  .hero-actions,
  footer {
    align-items: stretch;
    flex-direction: column;
  }
}