:root {
  color-scheme: dark;
  --bg: #080d10;
  --panel: #12191e;
  --panel-2: #182229;
  --text: #eef6f8;
  --muted: #9caab4;
  --line: #2a3943;
  --green: #55d98b;
  --blue: #5fb4ff;
  --amber: #ffc85a;
  --red: #ff6978;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px max(18px, calc((100vw - 1160px) / 2));
  border-bottom: 1px solid rgba(42, 57, 67, 0.9);
  background: rgba(8, 13, 16, 0.92);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
}

.brand img {
  width: 34px;
  height: 34px;
}

nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 750;
}

.nav-button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 16px;
  background: var(--panel-2);
  color: var(--text);
  font-weight: 900;
}

.button.primary,
.nav-button {
  border-color: var(--green);
  background: var(--green);
  color: #041207;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.9fr);
  gap: 34px;
  align-items: center;
  min-height: calc(100vh - 68px);
  padding: 42px max(18px, calc((100vw - 1160px) / 2)) 30px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--green);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 780px;
  font-size: clamp(48px, 9vw, 104px);
  line-height: 0.92;
  letter-spacing: 0;
}

h2 {
  font-size: clamp(32px, 5vw, 60px);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  font-size: 18px;
}

.lead {
  max-width: 720px;
  margin-top: 20px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.45;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.safety {
  max-width: 680px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.device-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 560px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0f151a;
}

.signal-ring {
  position: absolute;
  width: var(--size);
  height: var(--size);
  border: 1px solid rgba(95, 180, 255, var(--alpha));
  border-radius: 50%;
}

.ring-one {
  --size: 220px;
  --alpha: 0.45;
}

.ring-two {
  --size: 340px;
  --alpha: 0.28;
}

.ring-three {
  --size: 480px;
  --alpha: 0.16;
}

.device-card {
  position: relative;
  display: grid;
  place-items: center;
  width: min(290px, 74vw);
  aspect-ratio: 1.08;
  border: 1px solid rgba(85, 217, 139, 0.32);
  border-radius: 34px;
  background: linear-gradient(145deg, #1e2a31, #0d1317);
  box-shadow: 0 22px 80px rgba(0, 0, 0, 0.42);
}

.device-light {
  position: absolute;
  top: 22px;
  right: 24px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 28px rgba(85, 217, 139, 0.9);
}

.device-face {
  display: grid;
  place-items: center;
  gap: 16px;
}

.device-face span {
  width: 94px;
  height: 94px;
  border: 20px solid var(--blue);
  border-radius: 50%;
  box-shadow: 0 0 46px rgba(95, 180, 255, 0.34);
}

.device-face strong {
  font-size: 18px;
}

.usb-port {
  position: absolute;
  bottom: 18px;
  width: 58px;
  height: 12px;
  border-radius: 8px;
  background: #05080a;
}

.room-line {
  position: absolute;
  min-height: 32px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(18, 25, 30, 0.82);
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.room-line.router {
  left: 22px;
  top: 24px;
}

.room-line.zone {
  right: 22px;
  bottom: 24px;
}

.proof-grid,
.section,
.cta,
footer {
  width: min(1160px, calc(100% - 36px));
  margin: 0 auto;
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  padding: 18px 0 72px;
}

.proof-grid article,
.spec-list div,
.feature-list article,
.timeline article,
.cta {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.proof-grid article {
  min-height: 132px;
  padding: 18px;
}

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

.proof-grid strong {
  font-size: 22px;
}

.proof-grid span,
.content-stack p,
.feature-list p,
.timeline p,
.cta p {
  margin-top: 9px;
  color: var(--muted);
  line-height: 1.45;
}

.section {
  padding: 72px 0;
  border-top: 1px solid rgba(42, 57, 67, 0.7);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 1fr);
  gap: 34px;
}

.content-stack {
  display: grid;
  gap: 18px;
}

.spec-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.spec-list div {
  padding: 16px;
}

.spec-list strong,
.spec-list span {
  display: block;
}

.spec-list span {
  margin-top: 6px;
  color: var(--muted);
}

.section-head {
  max-width: 850px;
  margin-bottom: 28px;
}

.app-preview {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1fr);
  gap: 18px;
  align-items: center;
}

.phone-frame {
  width: min(340px, 100%);
  margin: 0 auto;
  padding: 14px;
  border: 1px solid #344650;
  border-radius: 42px;
  background: #05080a;
}

.phone-screen {
  display: grid;
  gap: 12px;
  min-height: 560px;
  padding: 18px;
  border-radius: 30px;
  background: #0f151a;
}

.screen-row {
  min-height: 108px;
  padding: 14px;
  border-radius: 8px;
  background: var(--panel);
}

.screen-row span,
.screen-row strong {
  display: block;
}

.screen-row span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.screen-row strong {
  margin-top: 12px;
  font-size: 34px;
}

.screen-row.small {
  min-height: 86px;
}

.screen-row.small strong {
  font-size: 25px;
}

.screen-map {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 7px;
}

.screen-map i {
  aspect-ratio: 1;
  border-radius: 8px;
  background: rgba(95, 180, 255, 0.18);
}

.screen-map i:nth-child(3),
.screen-map i:nth-child(5) {
  background: rgba(255, 200, 90, 0.84);
}

.screen-map i:nth-child(6) {
  background: rgba(255, 105, 120, 0.74);
}

.feature-list {
  display: grid;
  gap: 10px;
}

.feature-list article {
  padding: 18px;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.timeline article {
  min-height: 190px;
  padding: 18px;
}

.timeline span {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  margin-bottom: 20px;
  border-radius: 50%;
  background: rgba(85, 217, 139, 0.12);
  color: var(--green);
  font-weight: 900;
}

.timeline strong {
  display: block;
  font-size: 20px;
}

.cta {
  display: grid;
  gap: 16px;
  justify-items: start;
  margin-bottom: 72px;
  padding: 28px;
}

.cta p {
  max-width: 760px;
  margin-top: 0;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 0 34px;
  border-top: 1px solid rgba(42, 57, 67, 0.7);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 880px) {
  .site-header,
  nav,
  .hero-actions,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    gap: 12px;
  }

  .hero,
  .split,
  .app-preview,
  .proof-grid,
  .timeline {
    grid-template-columns: 1fr;
  }

  .device-stage {
    min-height: 420px;
  }
}

@media (max-width: 560px) {
  .spec-list {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 52px;
  }

  .phone-screen {
    min-height: 500px;
  }
}