:root {
  color-scheme: light dark;
  --ink: #111a2e;
  --ink-soft: #4c5870;
  --paper: #f4f7fb;
  --paper-raised: #ffffff;
  --line: #d4dce8;
  --line-strong: #a9b6ca;
  --navy: #10182d;
  --navy-raised: #18243e;
  --anchor: #2468c9;
  --anchor-strong: #174f9f;
  --signal: #38a4f6;
  --alert: #e5912f;
  --near: #50c897;
  --shadow: 0 26px 70px rgba(16, 24, 45, .16);
  --display: "Space Grotesk", sans-serif;
  --body: "Manrope", sans-serif;
  --shell: min(1180px, calc(100% - 40px));
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 30px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
}

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

button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 4px;
  border-radius: 5px;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  left: 20px;
  top: 12px;
  padding: 10px 14px;
  background: var(--paper-raised);
  color: var(--ink);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: none;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.section {
  padding: clamp(88px, 10vw, 144px) 0;
}

.eyebrow,
.feature-kicker {
  margin: 0 0 18px;
  color: var(--anchor-strong);
  font-size: .73rem;
  font-weight: 700;
  letter-spacing: .16em;
  line-height: 1.35;
  text-transform: uppercase;
}

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

h1,
h2,
h3 {
  font-family: var(--display);
  letter-spacing: -.04em;
}

h1 {
  max-width: 760px;
  margin-bottom: 26px;
  font-size: clamp(3rem, 6.8vw, 5.25rem);
  font-weight: 600;
  line-height: .93;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(2.2rem, 4.3vw, 4.2rem);
  font-weight: 600;
  line-height: 1;
}

h3 {
  margin-bottom: 10px;
  font-size: clamp(1.22rem, 1.8vw, 1.65rem);
  font-weight: 600;
  line-height: 1.15;
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  right: 0;
  left: 0;
  border-bottom: 1px solid transparent;
  transition: background-color .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.site-header.scrolled {
  border-color: rgba(212, 220, 232, .7);
  background: rgba(244, 247, 251, .86);
  box-shadow: 0 10px 30px rgba(16, 24, 45, .06);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
}

.nav {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 11px;
  font-family: var(--display);
  font-size: .93rem;
  font-weight: 600;
  letter-spacing: -.02em;
}

.brand img {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, .42);
  border-radius: 10px;
  box-shadow: 0 4px 14px rgba(16, 24, 45, .2);
}

.brand b {
  color: var(--anchor-strong);
  font-weight: 600;
}

.nav-actions,
.nav-links {
  display: flex;
  align-items: center;
}

.nav-actions {
  gap: 26px;
}

.nav-links {
  gap: 26px;
}

.nav-links a {
  position: relative;
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: var(--ink-soft);
  font-size: .84rem;
  font-weight: 600;
}

.nav-links a:hover {
  color: var(--ink);
}

.nav-links a::after {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--signal);
  bottom: 4px;
  content: "";
  left: calc(50% - 2px);
  opacity: 0;
  transform: translateY(3px);
  transition: opacity .2s ease, transform .2s ease;
}

.nav-links a[aria-current="location"] {
  color: var(--ink);
}

.nav-links a[aria-current="location"]::after {
  opacity: 1;
  transform: none;
}

.nav-cta {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-size: .82rem;
  font-weight: 700;
  transition: transform .2s ease, background-color .2s ease;
}

.nav-cta:hover {
  background: var(--anchor-strong);
  transform: translateY(-1px);
}

.hero {
  position: relative;
  min-height: 820px;
  padding: 154px 0 82px;
  overflow: hidden;
  background:
    linear-gradient(rgba(16, 24, 45, .025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 24, 45, .025) 1px, transparent 1px),
    var(--paper);
  background-size: 48px 48px;
}

.hero::before {
  position: absolute;
  width: 580px;
  height: 580px;
  border: 1px solid rgba(36, 104, 201, .08);
  border-radius: 50%;
  content: "";
  right: -230px;
  top: -170px;
  box-shadow: 0 0 0 90px rgba(36, 104, 201, .025), 0 0 0 180px rgba(36, 104, 201, .018);
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  align-items: center;
  gap: clamp(36px, 6vw, 90px);
  grid-template-columns: minmax(0, 1.06fr) minmax(410px, .94fr);
}

.hero-copy {
  position: relative;
  z-index: 3;
}

.hero-copy .eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--near);
  box-shadow: 0 0 0 5px rgba(80, 200, 151, .13);
}

.hero-lede {
  max-width: 650px;
  margin-bottom: 34px;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.app-store-badge {
  display: inline-flex;
  min-width: 176px;
  min-height: 54px;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(5, 7, 11, .16);
  transition: transform .2s ease, box-shadow .2s ease;
}

.app-store-badge svg {
  width: 176px;
  height: 54px;
}

.app-store-badge:hover {
  box-shadow: 0 12px 30px rgba(5, 7, 11, .24);
  transform: translateY(-2px);
}

.hero-note {
  max-width: 170px;
  color: var(--ink-soft);
  font-size: .76rem;
  font-weight: 600;
  line-height: 1.45;
}

.radar-stage {
  position: relative;
  padding: 28px 0;
}

.radar-stage::before {
  position: absolute;
  inset: 10% -12%;
  border-radius: 50%;
  background: rgba(36, 104, 201, .12);
  filter: blur(70px);
  content: "";
}

.radar-hud {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(142, 165, 200, .28);
  border-radius: var(--radius-lg);
  background: #10182d;
  box-shadow: var(--shadow);
  color: #f7f9fd;
}

.radar-hud::after {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px);
  background-size: 100% 4px;
  content: "";
  pointer-events: none;
}

.hud-label {
  display: flex;
  height: 56px;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  color: #aebdd2;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .17em;
}

.hud-label b {
  margin-left: auto;
  margin-right: 12px;
  color: #657894;
  font-size: .57rem;
  font-weight: 700;
  letter-spacing: .12em;
}

.hud-label i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--near);
  box-shadow: 0 0 0 6px rgba(80, 200, 151, .12);
}

.radar-field {
  position: relative;
  aspect-ratio: 1;
  margin: 24px;
  overflow: hidden;
  border: 1px solid rgba(129, 159, 205, .2);
  border-radius: 50%;
  background: radial-gradient(circle, #192a49 0, #111c34 67%, #0d1528 100%);
}

.radar-ring {
  position: absolute;
  border: 1px solid rgba(109, 164, 236, .24);
  border-radius: 50%;
  inset: 12.5%;
}

.ring-two {
  inset: 25%;
}

.ring-three {
  inset: 37.5%;
}

.radar-axis {
  position: absolute;
  background: rgba(109, 164, 236, .16);
}

.axis-x {
  width: 100%;
  height: 1px;
  left: 0;
  top: 50%;
}

.axis-y {
  width: 1px;
  height: 100%;
  left: 50%;
  top: 0;
}

.radar-sweep {
  position: absolute;
  inset: 50% 0 0 50%;
  border-left: 1px solid rgba(83, 177, 255, .75);
  background: conic-gradient(from 270deg at 0 0, rgba(56, 164, 246, .36), transparent 20%);
  transform-origin: 0 0;
}

.radar-icon {
  position: absolute;
  z-index: 3;
  width: 21%;
  height: 21%;
  left: 39.5%;
  top: 39.5%;
  border: 1px solid rgba(255, 255, 255, .4);
  border-radius: 24%;
  box-shadow: 0 0 0 7px rgba(16, 24, 45, .9), 0 8px 30px rgba(0, 0, 0, .4);
}

.device-ping {
  position: absolute;
  z-index: 4;
  display: grid;
  grid-template-columns: 11px auto;
  color: #fff;
  font-family: var(--body);
  font-size: .65rem;
  line-height: 1.2;
  transform: translate(-5px, -5px);
}

.device-ping > i {
  width: 9px;
  height: 9px;
  margin-top: 2px;
  border: 2px solid #dff9ef;
  border-radius: 50%;
  background: var(--near);
  box-shadow: 0 0 0 7px rgba(80, 200, 151, .12), 0 0 18px rgba(80, 200, 151, .65);
  grid-row: 1 / 3;
}

.device-ping b,
.device-ping small {
  margin-left: 7px;
  white-space: nowrap;
}

.device-ping b {
  font-weight: 700;
}

.device-ping small {
  color: #98aac4;
  font-size: .58rem;
}

.ping-earbuds {
  left: 72%;
  top: 28%;
}

.ping-watch {
  left: 25%;
  top: 43%;
}

.ping-watch > i {
  background: var(--signal);
  box-shadow: 0 0 0 7px rgba(56, 164, 246, .12), 0 0 18px rgba(56, 164, 246, .65);
}

.ping-tracker {
  left: 60%;
  top: 76%;
}

.ping-tracker > i {
  border-color: #fff1dd;
  background: var(--alert);
  box-shadow: 0 0 0 7px rgba(229, 145, 47, .12), 0 0 18px rgba(229, 145, 47, .55);
}

.signal-readout {
  display: flex;
  min-height: 62px;
  align-items: center;
  gap: 17px;
  padding: 0 22px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  color: #9fadc2;
  font-size: .65rem;
  font-weight: 600;
}

.signal-readout span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.signal-readout i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.signal-readout .near {
  background: var(--near);
}

.signal-readout .close {
  background: var(--signal);
}

.signal-readout .fading {
  background: var(--alert);
}

.signal-readout strong {
  margin-left: auto;
  color: #eef3fb;
  font-family: var(--display);
  font-size: .7rem;
}

.signal-ticker {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .5);
}

.signal-ticker div {
  display: flex;
  width: max-content;
  min-height: 48px;
  align-items: center;
  gap: 20px;
  color: var(--ink-soft);
  font-size: .72rem;
}

.signal-ticker span {
  color: var(--anchor-strong);
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .16em;
}

.signal-ticker b {
  padding-right: 26px;
  font-weight: 500;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 58px;
}

.section-heading > p:last-child {
  max-width: 620px;
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 1.06rem;
}

.feature-layout {
  display: grid;
  grid-template-columns: 1.25fr .75fr .75fr;
  gap: 16px;
}

.feature-primary,
.feature-item {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper-raised);
}

.feature-primary {
  display: grid;
  min-height: 440px;
  padding: 36px;
  grid-row: span 2;
}

.feature-primary::before {
  position: absolute;
  width: 380px;
  height: 380px;
  border: 1px solid rgba(36, 104, 201, .12);
  border-radius: 50%;
  content: "";
  right: -170px;
  bottom: -200px;
  box-shadow: 0 0 0 60px rgba(36, 104, 201, .025), 0 0 0 120px rgba(36, 104, 201, .018);
}

.feature-copy {
  max-width: 420px;
}

.feature-icon {
  display: inline-flex;
  width: 48px;
  height: 48px;
  align-items: center;
  justify-content: center;
  margin-bottom: 30px;
  border-radius: 13px;
  background: #e8f1ff;
  color: var(--anchor-strong);
}

.feature-icon svg {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.65;
}

.feature-item {
  min-height: 212px;
  padding: 28px;
}

.feature-item .feature-icon {
  width: 42px;
  height: 42px;
  margin-bottom: 22px;
}

.feature-item p:last-child,
.feature-primary p:last-child {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: .89rem;
  line-height: 1.65;
}

.feature-kicker {
  margin-bottom: 12px;
  font-size: .62rem;
}

.feature-alert {
  background: var(--navy);
  color: #f8faff;
}

.feature-alert .feature-icon {
  background: rgba(229, 145, 47, .14);
  color: #ffc26f;
}

.feature-alert .feature-kicker,
.feature-alert p:last-child {
  color: #aab7ca;
}

.proximity-meter {
  position: relative;
  z-index: 2;
  align-self: end;
  margin-top: 34px;
}

.proximity-meter div {
  display: grid;
  align-items: center;
  margin-top: 16px;
  grid-template-columns: 62px minmax(80px, 1fr) 62px;
  gap: 14px;
  color: var(--ink-soft);
  font-size: .64rem;
  font-weight: 700;
}

.proximity-meter b {
  color: var(--ink);
  font-size: .61rem;
  text-align: right;
}

.proximity-meter i {
  position: relative;
  height: 5px;
  overflow: hidden;
  border-radius: 99px;
  background: #dfe6ef;
}

.proximity-meter i::after {
  position: absolute;
  width: var(--level);
  height: 100%;
  border-radius: inherit;
  background: var(--anchor);
  content: "";
}

.proximity-meter div:last-child i::after {
  background: var(--alert);
}

.feature-wide {
  display: flex;
  min-height: 164px;
  align-items: flex-start;
  gap: 20px;
}

.feature-wide .feature-icon {
  flex: 0 0 auto;
  margin: 0;
}

.how-section {
  background: var(--navy);
  color: #f5f8fd;
}

.how-grid {
  display: grid;
  align-items: start;
  gap: clamp(56px, 8vw, 130px);
  grid-template-columns: minmax(280px, .85fr) minmax(400px, 1.15fr);
}

.how-intro {
  position: sticky;
  top: 120px;
}

.how-intro .eyebrow {
  color: #76baff;
}

.how-intro > p:last-child {
  max-width: 450px;
  color: #a9b6ca;
}

.steps {
  padding: 0;
  margin: 0;
  list-style: none;
}

.steps li {
  display: grid;
  min-height: 168px;
  align-items: start;
  padding: 32px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .13);
  grid-template-columns: 58px 1fr;
  gap: 22px;
}

.steps li:first-child {
  padding-top: 0;
}

.steps li > span {
  display: inline-flex;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(118, 186, 255, .42);
  border-radius: 50%;
  color: #76baff;
  font-family: var(--display);
  font-size: .84rem;
  font-weight: 700;
}

.steps p {
  max-width: 560px;
  margin-bottom: 0;
  color: #a9b6ca;
}

.faq-grid {
  display: grid;
  align-items: start;
  gap: clamp(50px, 8vw, 120px);
  grid-template-columns: minmax(260px, .75fr) minmax(420px, 1.25fr);
}

.faq-grid .section-heading {
  position: sticky;
  top: 120px;
  margin: 0;
}

.faq-list {
  border-top: 1px solid var(--line-strong);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  position: relative;
  display: flex;
  min-height: 80px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 4px;
  cursor: pointer;
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -.02em;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary span {
  position: relative;
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
}

.faq-list summary span::before,
.faq-list summary span::after {
  position: absolute;
  width: 14px;
  height: 2px;
  background: var(--anchor-strong);
  content: "";
  left: 3px;
  top: 9px;
}

.faq-list summary span::after {
  transform: rotate(90deg);
  transition: transform .2s ease;
}

.faq-list details[open] summary span::after {
  transform: rotate(0);
}

.faq-list details p {
  max-width: 650px;
  padding: 0 48px 26px 4px;
  margin: 0;
  color: var(--ink-soft);
}

.final-cta {
  position: relative;
  padding: 92px 0;
  overflow: hidden;
  background: #172440;
  color: #f7f9fd;
}

.final-cta-inner {
  position: relative;
  z-index: 2;
  display: grid;
  align-items: center;
  grid-template-columns: 80px 1fr auto;
  gap: 28px;
}

.final-cta-inner > img {
  border: 1px solid rgba(255, 255, 255, .34);
  border-radius: 20px;
  box-shadow: 0 14px 30px rgba(0, 0, 0, .26);
}

.final-cta .eyebrow {
  margin-bottom: 10px;
  color: #78bcff;
}

.final-cta h2 {
  margin-bottom: 8px;
  font-size: clamp(2rem, 3.3vw, 3.2rem);
}

.final-cta p:last-child {
  margin-bottom: 0;
  color: #aebbd0;
}

.final-radar {
  position: absolute;
  width: 640px;
  height: 640px;
  right: -200px;
  top: 50%;
  border: 1px solid rgba(118, 186, 255, .12);
  border-radius: 50%;
  transform: translateY(-50%);
}

.final-radar i {
  position: absolute;
  border: 1px solid rgba(118, 186, 255, .1);
  border-radius: 50%;
  inset: 16%;
}

.final-radar i:nth-child(2) {
  inset: 32%;
}

.final-radar i:nth-child(3) {
  inset: 48%;
  background: rgba(118, 186, 255, .08);
}

.site-footer {
  padding: 44px 0;
  background: #0c1324;
  color: #9ca9bd;
}

.error-page {
  display: grid;
  width: min(620px, calc(100% - 40px));
  min-height: 100svh;
  align-content: center;
  justify-items: start;
  margin-inline: auto;
  padding: 64px 0;
}

.error-page h1 {
  margin-bottom: 22px;
  font-size: clamp(3rem, 9vw, 5.8rem);
}

.error-page > p:not(.eyebrow) {
  max-width: 520px;
  margin-bottom: 30px;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.error-page .nav-cta {
  padding-inline: 24px;
}

.error-radar {
  position: relative;
  width: 220px;
  height: 220px;
  margin-bottom: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.error-radar i {
  position: absolute;
  border: 1px solid var(--line);
  border-radius: 50%;
  inset: 17%;
}

.error-radar i:nth-child(2) {
  inset: 34%;
}

.error-radar i:nth-child(3) {
  inset: 49.5%;
}

.error-radar img {
  position: absolute;
  width: 72px;
  height: 72px;
  right: -8px;
  top: 30px;
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.footer-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}

.footer-inner p {
  margin-bottom: 0;
  font-size: .76rem;
}

.footer-brand {
  margin-bottom: 5px !important;
  color: #eff4fb;
  font-family: var(--display);
  font-size: .9rem !important;
  font-weight: 600;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: #dbe4f1;
  font-size: .78rem;
  font-weight: 600;
}

.footer-links a:hover {
  color: #fff;
}

@media (prefers-reduced-motion: no-preference) {
  .js .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .38s ease-out, transform .38s ease-out;
  }

  .js .reveal.is-visible {
    opacity: 1;
    transform: none;
  }

  .radar-stage {
    animation: device-float 5.5s ease-in-out infinite;
  }

  .radar-sweep {
    animation: radar-scan 5s linear infinite;
  }

  .device-ping > i {
    animation: ping 2.4s ease-out infinite;
  }

  .ping-watch > i {
    animation-delay: .7s;
  }

  .ping-tracker > i {
    animation-delay: 1.4s;
  }

  .signal-ticker div {
    animation: ticker 28s linear infinite;
  }

  @keyframes device-float {
    0%, 100% { transform: translateY(0) rotate(-.35deg); }
    50% { transform: translateY(-9px) rotate(.35deg); }
  }

  @keyframes radar-scan {
    to { transform: rotate(360deg); }
  }

  @keyframes ping {
    0%, 45%, 100% { box-shadow: 0 0 0 0 rgba(80, 200, 151, .26), 0 0 18px rgba(80, 200, 151, .55); }
    70% { box-shadow: 0 0 0 12px rgba(80, 200, 151, 0), 0 0 18px rgba(80, 200, 151, .55); }
  }

  @keyframes ticker {
    to { transform: translateX(-50%); }
  }
}

@media (max-width: 980px) {
  .hero {
    min-height: auto;
  }

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

  .hero-copy {
    max-width: 760px;
  }

  .radar-stage {
    width: min(580px, 100%);
    margin-inline: auto;
  }

  .feature-layout {
    grid-template-columns: 1fr 1fr;
  }

  .feature-primary {
    grid-column: span 2;
    grid-row: auto;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }

  .feature-wide {
    min-height: 190px;
  }

  .how-grid,
  .faq-grid {
    gap: 60px;
  }
}

@media (max-width: 760px) {
  :root {
    --shell: min(100% - 32px, 680px);
  }

  .section {
    padding: 80px 0;
  }

  .nav {
    min-height: 68px;
  }

  .brand span {
    max-width: 135px;
    font-size: .82rem;
    line-height: 1.12;
  }

  .nav-links {
    display: none;
  }

  .nav-actions {
    gap: 0;
  }

  .hero {
    padding: 122px 0 79px;
  }

  .hero::before {
    width: 400px;
    height: 400px;
  }

  h1 {
    font-size: clamp(3.15rem, 14.5vw, 5.3rem);
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-note {
    max-width: none;
  }

  .radar-stage {
    padding-top: 10px;
  }

  .signal-readout {
    gap: 10px;
    padding: 0 16px;
  }

  .signal-readout span:nth-child(2) {
    display: none;
  }

  .feature-layout {
    grid-template-columns: 1fr;
  }

  .feature-primary {
    grid-column: auto;
    grid-template-columns: 1fr;
  }

  .feature-item,
  .feature-wide {
    min-height: auto;
  }

  .how-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .how-intro,
  .faq-grid .section-heading {
    position: static;
  }

  .steps li {
    min-height: auto;
  }

  .final-cta-inner {
    grid-template-columns: 64px 1fr;
  }

  .final-cta-inner > img {
    width: 64px;
    height: 64px;
    border-radius: 16px;
  }

  .final-cta-inner .app-store-badge {
    grid-column: 1 / -1;
  }
}

@media (max-width: 420px) {
  .brand span {
    display: none;
  }

  .hero-lede {
    font-size: 1rem;
  }

  .radar-field {
    margin: 14px;
  }

  .hud-label {
    height: 48px;
    padding-inline: 16px;
  }

  .hud-label b {
    display: none;
  }

  .device-ping {
    font-size: .59rem;
  }

  .device-ping small {
    display: none;
  }

  .signal-readout {
    min-height: 52px;
  }

  .signal-readout strong {
    display: none;
  }

  .feature-primary,
  .feature-item {
    padding: 26px;
  }

  .steps li {
    grid-template-columns: 46px 1fr;
    gap: 14px;
  }

  .steps li > span {
    width: 40px;
    height: 40px;
  }

  .faq-list summary {
    min-height: 74px;
    font-size: .96rem;
  }

  .final-cta-inner {
    grid-template-columns: 1fr;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #edf3fc;
    --ink-soft: #a7b4c8;
    --paper: #0c1426;
    --paper-raised: #131e34;
    --line: #273650;
    --line-strong: #41516c;
    --anchor: #6db5ff;
    --anchor-strong: #86c2ff;
    --shadow: 0 28px 76px rgba(0, 0, 0, .4);
  }

  .site-header.scrolled {
    border-color: rgba(39, 54, 80, .8);
    background: rgba(12, 20, 38, .86);
  }

  .brand b {
    color: #86c2ff;
  }

  .nav-cta {
    background: #edf3fc;
    color: #10182d;
  }

  .nav-cta:hover {
    background: #86c2ff;
  }

  .hero {
    background:
      linear-gradient(rgba(132, 167, 218, .025) 1px, transparent 1px),
      linear-gradient(90deg, rgba(132, 167, 218, .025) 1px, transparent 1px),
      var(--paper);
    background-size: 48px 48px;
  }

  .signal-ticker {
    background: rgba(19, 30, 52, .72);
  }

  .feature-icon {
    background: #1b3356;
    color: #8cc6ff;
  }

  .feature-alert {
    border-color: #33435e;
    background: #17243d;
  }

  .proximity-meter i {
    background: #2b3a54;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header.scrolled {
    background: var(--paper);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}

:root{--guide-accent:var(--anchor,var(--green,var(--canopy,var(--slate,#2f6fe4))));--guide-ink:var(--ink,var(--text,#17202a));--guide-muted:var(--muted,var(--ink-soft,#5e6b76));--guide-line:var(--line,rgba(20,35,45,.16));--guide-surface:var(--surface-raised,var(--paper-raised,var(--surface,var(--paper,#fff))));--guide-bg:var(--paper,var(--surface,#fff));--guide-tint:var(--anchor-soft,var(--canopy-soft,var(--slate-wash,rgba(50,110,220,.08))))}
/* Arc Tools SEO guide surfaces */
/* Additive, theme-aware resource surfaces used by generated guide hubs. */
.seo-guides{padding:clamp(3rem,7vw,6rem) 0;border-top:1px solid var(--guide-line)}
.seo-guides-inner,.guide-shell{width:min(100% - 2rem,64rem);margin:0 auto}
.seo-guides-kicker,.guide-kicker{margin:0 0 .55rem;color:var(--guide-accent);font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
.seo-guides h2,.guide-hero h1,.guide-article h2{color:var(--guide-ink);font-family:var(--display,var(--body,system-ui));line-height:1.08;letter-spacing:-.025em}
.seo-guides h2{max-width:30rem;margin:.2rem 0 .8rem;font-size:clamp(1.7rem,3vw,2.5rem)}
.seo-guides p,.guide-hero p,.guide-article p,.guide-article li{color:var(--guide-muted);line-height:1.7}
.seo-guides-intro{max-width:44rem;margin:0 0 1.4rem}
.seo-guides-links{display:flex;flex-wrap:wrap;gap:.65rem 1rem;margin:1.25rem 0}
.seo-guides-links a,.guide-nav a{color:var(--guide-accent);font-weight:700;text-decoration:underline;text-decoration-thickness:.08em;text-underline-offset:.16em}
.seo-guides-more{display:inline-flex;align-items:center;min-height:2.75rem;padding:.7rem 1rem;border:1px solid var(--guide-line);border-radius:999px;background:var(--guide-surface);color:var(--guide-ink)!important;text-decoration:none!important}
.guide-page{background:var(--guide-bg);color:var(--guide-ink)}
.guide-shell{padding-block:clamp(2rem,6vw,5rem)}
.guide-nav{display:flex;justify-content:space-between;gap:1rem;align-items:center;margin-bottom:clamp(2rem,5vw,4rem);font-size:.95rem}
.guide-nav a:first-child{font-weight:700;text-decoration:none}
.guide-hero{max-width:48rem;margin-bottom:clamp(2.5rem,6vw,5rem)}
.guide-hero h1{margin:.2rem 0 1rem;font-size:clamp(2.1rem,5vw,4.5rem)}
.guide-hero .guide-summary{max-width:42rem;font-size:clamp(1.08rem,1.5vw,1.28rem)}
.guide-index-list{display:grid;gap:1rem;margin:2rem 0 0;padding:0;list-style:none}
.guide-index-list li{margin:0}
.guide-index-link{display:block;padding:1.15rem 1.25rem;border:1px solid var(--guide-line);border-radius:1rem;background:var(--guide-surface);text-decoration:none;transition:transform .2s ease,border-color .2s ease}
.guide-index-link:hover,.guide-index-link:focus-visible{transform:translateY(-2px);border-color:var(--guide-accent)}
.guide-index-link strong{display:block;color:var(--guide-ink);font-size:1.08rem;margin-bottom:.3rem}
.guide-index-link span{color:var(--guide-muted)}
.guide-article{max-width:46rem}
.guide-article h2{margin:2.4rem 0 .75rem;font-size:clamp(1.35rem,2.5vw,2rem)}
.guide-article ul{padding-left:1.2rem}
.guide-article li+li{margin-top:.55rem}
.guide-callout{margin:2rem 0;padding:1.1rem 1.25rem;border-left:3px solid var(--guide-accent);background:var(--guide-tint);border-radius:0 .8rem .8rem 0}
.guide-callout p{margin:0}
.guide-footer-links{display:flex;flex-wrap:wrap;gap:1rem;margin-top:2.5rem;padding-top:1.25rem;border-top:1px solid var(--guide-line)}
@media (min-width:48rem){.seo-guides-inner,.guide-shell{width:min(100% - 4rem,64rem)}}
@media (prefers-reduced-motion:reduce){.guide-index-link{transition:none}.guide-index-link:hover{transform:none}}