:root {
  color-scheme: dark light;
  --bg: #0f1319;
  --bg-raised: #151a22;
  --surface: #1b212b;
  --surface-strong: #222a36;
  --ink: #f7f2e9;
  --muted: #a6a29a;
  --line: rgba(247, 242, 233, 0.13);
  --line-strong: rgba(247, 242, 233, 0.22);
  --accent: #ff5a1f;
  --accent-hot: #ff7a35;
  --accent-soft: rgba(255, 90, 31, 0.14);
  --cyan: #2ad8e6;
  --yellow: #f4c54d;
  --green: #5fd19a;
  --display: "Arial Rounded MT Bold", "SF Pro Rounded", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  --data: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --shell: min(1180px, calc(100vw - 48px));
  --header-height: 76px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f1ea;
    --bg-raised: #fbf9f4;
    --surface: #ffffff;
    --surface-strong: #eee9df;
    --ink: #191d23;
    --muted: #6c685f;
    --line: rgba(25, 29, 35, 0.12);
    --line-strong: rgba(25, 29, 35, 0.2);
    --accent: #d33c05;
    --accent-hot: #ef4c10;
    --accent-soft: rgba(211, 60, 5, 0.1);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 var(--body);
  text-rendering: optimizeLegibility;
}

body.menu-open { overflow: hidden; }

img { max-width: 100%; }

a { color: inherit; }

button, input, textarea { font: inherit; }

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
  border-radius: 6px;
}

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  transform: translateY(-160%);
  padding: 10px 14px;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  text-decoration: none;
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  right: 0;
  left: 0;
  height: var(--header-height);
  border-bottom: 1px solid transparent;
  transition: background-color 180ms ease, border-color 180ms ease, backdrop-filter 180ms ease;
}

.site-header.is-scrolled {
  border-color: var(--line);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(18px) saturate(1.2);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font: italic 900 1.42rem/1 var(--display);
  letter-spacing: -0.04em;
  text-decoration: none;
}

.brand strong { color: var(--accent); }

.brand-icon {
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  filter: drop-shadow(0 5px 12px rgba(0, 0, 0, 0.28));
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 25px;
  margin-left: auto;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
}

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

.site-nav .nav-highlight {
  padding: 9px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink);
}

.site-nav .nav-highlight:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 11px;
  border: 0;
  background: transparent;
  color: var(--ink);
}

.menu-button span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px 0;
  border-radius: 2px;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-button[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-button[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-button[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.hero {
  position: relative;
  min-height: 820px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 76% 38%, rgba(255, 90, 31, 0.21), transparent 29%),
    radial-gradient(circle at 90% 12%, rgba(42, 216, 230, 0.08), transparent 25%),
    linear-gradient(180deg, color-mix(in srgb, var(--bg-raised) 75%, transparent), var(--bg));
}

.hero::before {
  content: "";
  position: absolute;
  right: -10vw;
  bottom: -25vw;
  width: 76vw;
  height: 54vw;
  border: 1px solid rgba(255, 90, 31, 0.18);
  border-radius: 50%;
  transform: rotate(-12deg);
}

.hero::after {
  content: "";
  position: absolute;
  right: -6vw;
  bottom: -17vw;
  width: 62vw;
  height: 42vw;
  border-top: 2px dashed rgba(244, 197, 77, 0.34);
  border-radius: 50%;
  transform: rotate(-12deg);
}

.hero-content {
  position: relative;
  z-index: 4;
  padding-top: 185px;
}

.hero-content > * { max-width: 590px; }

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1,
.page-hero h1,
.section-heading h2,
.privacy-lead h2,
.closing-inner h2 {
  margin: 0;
  font-family: var(--display);
  font-style: italic;
  font-weight: 900;
  letter-spacing: -0.055em;
  line-height: 0.98;
  text-wrap: balance;
}

.hero h1 {
  max-width: 720px;
  font-size: clamp(4rem, 7.4vw, 7.2rem);
}

.hero h1 .accent { color: var(--accent); }

.hero-offer {
  margin: 24px 0 8px;
  color: var(--ink);
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  font-weight: 760;
  letter-spacing: -0.025em;
}

.hero-copy {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

.action-row {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-top: 30px;
}

.store-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 176px;
  padding: 9px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: color-mix(in srgb, var(--surface) 72%, transparent);
}

.store-status svg {
  width: 22px;
  fill: currentColor;
}

.store-status span { display: grid; line-height: 1.1; }
.store-status strong { font-size: 0.9rem; }
.store-status small { margin-top: 4px; color: var(--muted); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em; }

.action-link,
.text-link {
  color: var(--ink);
  font-weight: 760;
  text-decoration: none;
}

.action-link:hover,
.text-link:hover { color: var(--accent); }

.action-link-accent { color: var(--accent); }

.hero-note {
  margin-top: 19px;
  color: var(--muted);
  font-size: 0.82rem;
}

.hero-scene {
  position: absolute;
  z-index: 2;
  top: 128px;
  right: max(-55px, calc((100vw - 1320px) / 2));
  width: min(51vw, 710px);
  height: 660px;
  pointer-events: none;
}

.hero-phone,
.phone-shell,
.showcase-phone {
  overflow: hidden;
  border: 8px solid #090c11;
  background: #090c11;
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.42);
}

.hero-phone {
  position: absolute;
  width: 220px;
  aspect-ratio: 368 / 800;
  border-radius: 38px;
  transition: transform 180ms ease;
}

.hero-watch {
  position: absolute;
  z-index: 4;
  right: 112px;
  bottom: 26px;
  width: 250px;
  aspect-ratio: 671 / 800;
  overflow: hidden;
  border: 7px solid #090c11;
  border-radius: 54px;
  background: #090c11;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
  transform: rotate(3deg);
}

.hero-watch img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-phone img,
.phone-shell img,
.showcase-phone img,
.showcase-watch img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-phone-left {
  top: 95px;
  left: 10px;
  transform: translate(var(--phone-left-x, 0), var(--phone-left-y, 0)) rotate(-8deg);
  opacity: 0.82;
}

.hero-phone-center {
  z-index: 2;
  top: 10px;
  left: 210px;
  width: 250px;
  transform: translate(var(--phone-center-x, 0), var(--phone-center-y, 0));
}

.hero-phone-right {
  top: 82px;
  right: -8px;
  transform: translate(var(--phone-right-x, 0), var(--phone-right-y, 0)) rotate(8deg);
  opacity: 0.82;
}

.hero-next {
  position: absolute;
  z-index: 5;
  bottom: 26px;
  left: 50%;
  display: grid;
  justify-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
  transform: translateX(-50%);
}

.hero-next svg {
  width: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

.proof-strip {
  border-bottom: 1px solid var(--line);
  background: var(--bg-raised);
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.proof-grid > div {
  display: flex;
  align-items: center;
  gap: 13px;
  min-height: 112px;
  padding: 22px;
  border-left: 1px solid var(--line);
}

.proof-grid > div:last-child { border-right: 1px solid var(--line); }

.proof-icon {
  width: 25px;
  flex: 0 0 auto;
  fill: none;
  stroke: var(--accent);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.proof-copy { display: grid; line-height: 1.3; }
.proof-copy strong { font-size: 0.9rem; }
.proof-copy span { margin-top: 3px; color: var(--muted); font-size: 0.76rem; }

.section {
  padding: 112px 0;
  border-bottom: 1px solid var(--line);
}

.section-heading { max-width: 760px; }

.section-heading h2,
.privacy-lead h2,
.closing-inner h2 {
  font-size: clamp(2.6rem, 5.8vw, 5.2rem);
}

.section-heading > p:last-child {
  max-width: 640px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.ride-story {
  background:
    linear-gradient(90deg, transparent 49.9%, var(--line) 50%, transparent 50.1%),
    var(--bg);
}

.ride-layout {
  display: grid;
  grid-template-columns: minmax(310px, 0.88fr) minmax(420px, 1.12fr);
  gap: clamp(58px, 9vw, 130px);
  align-items: start;
  margin-top: 72px;
}

.ride-stage {
  position: sticky;
  top: 112px;
  display: grid;
  justify-items: center;
}

.phone-shell {
  width: 282px;
  aspect-ratio: 368 / 800;
  border-radius: 45px;
  transition: width 180ms ease, aspect-ratio 180ms ease, border-radius 180ms ease, opacity 120ms ease, transform 120ms ease;
}

.phone-shell.is-watch {
  width: 340px;
  aspect-ratio: 671 / 800;
  border-radius: 38px;
}

.phone-shell.is-changing {
  opacity: 0.56;
  transform: scale(0.985);
}

.screen-progress {
  width: min(310px, 100%);
  height: 3px;
  margin-top: 25px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-strong);
}

.screen-progress span {
  display: block;
  width: 25%;
  height: 100%;
  background: var(--accent);
  transition: width 220ms ease;
}

.screen-status {
  margin: 12px 0 0;
  color: var(--muted);
  font: 0.72rem/1.5 var(--data);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.story-steps {
  position: relative;
  display: grid;
  gap: 26px;
  padding: 14px 0 14px 34px;
}

.story-steps::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 55px;
  width: 1px;
  background: var(--line-strong);
}

.story-step {
  position: relative;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 24px;
  width: 100%;
  min-height: 138px;
  padding: 20px 22px 20px 0;
  border: 1px solid transparent;
  border-radius: 18px;
  background: transparent;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.story-step:hover { transform: translateX(4px); }

.story-step.is-active {
  border-color: var(--line-strong);
  background: var(--surface);
}

.story-number {
  z-index: 1;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--bg);
  color: var(--muted);
  font: 0.73rem/1 var(--data);
}

.story-step.is-active .story-number {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.story-copy { display: grid; align-content: center; }
.story-copy strong { font-size: 1.28rem; letter-spacing: -0.025em; }
.story-copy small { max-width: 47ch; margin-top: 8px; color: var(--muted); font-size: 0.93rem; line-height: 1.55; }

.feature-band { border-top: 1px solid var(--line); }
.feature-band:last-child { border-bottom: 1px solid var(--line); }

.feature-list { margin-top: 66px; }

.feature-inner {
  display: grid;
  grid-template-columns: 80px minmax(300px, 1fr) minmax(220px, 0.75fr);
  gap: 36px;
  align-items: center;
  min-height: 230px;
  padding-top: 34px;
  padding-bottom: 34px;
}

.feature-index {
  color: var(--accent);
  font: 0.8rem/1 var(--data);
  letter-spacing: 0.1em;
}

.feature-inner h3 {
  margin: 0 0 11px;
  font-size: clamp(1.55rem, 3vw, 2.4rem);
  letter-spacing: -0.04em;
}

.feature-inner p {
  max-width: 58ch;
  margin: 0;
  color: var(--muted);
}

.signal {
  position: relative;
  justify-self: end;
  width: min(270px, 100%);
  min-height: 92px;
}

.signal-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.signal-metrics span {
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  color: var(--ink);
  font: 700 1.1rem/1 var(--data);
}

.signal-route::before,
.signal-route::after {
  content: "";
  position: absolute;
  inset: 18px 6px;
  border-top: 4px dashed var(--yellow);
  border-radius: 50%;
  transform: rotate(-12deg);
}

.signal-route::after {
  inset: 39px 18px 8px;
  border-top-style: solid;
  border-color: var(--cyan);
  transform: rotate(8deg);
}

.signal-route span {
  position: absolute;
  z-index: 1;
  top: 37px;
  left: 48%;
  width: 15px;
  height: 15px;
  border: 4px solid var(--surface);
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 2px var(--cyan);
}

.signal-pages {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.signal-pages span {
  width: 58px;
  height: 74px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: var(--surface);
}

.signal-pages span:nth-child(2) {
  height: 94px;
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.watch-section { background: var(--bg-raised); }

.watch-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: clamp(50px, 9vw, 120px);
  align-items: center;
}

.watch-copy h2 {
  margin: 0;
  font: italic 900 clamp(2.8rem, 5.7vw, 5.4rem)/0.98 var(--display);
  letter-spacing: -0.055em;
}

.watch-copy > p:not(.eyebrow) { margin: 24px 0 0; color: var(--muted); font-size: 1.05rem; }

.watch-list {
  display: grid;
  gap: 14px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.watch-list li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 12px;
  align-items: start;
}

.watch-list span {
  display: grid;
  place-items: center;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
}

.watch-visual {
  position: relative;
  min-height: 500px;
}

.showcase-phone {
  position: absolute;
  top: 0;
  right: 0;
  width: 230px;
  aspect-ratio: 368 / 800;
  border-radius: 40px;
  transform: rotate(4deg);
}

.showcase-watch {
  position: absolute;
  z-index: 2;
  right: 178px;
  bottom: 8px;
  width: 330px;
  aspect-ratio: 671 / 800;
  overflow: hidden;
  border: 8px solid #090c11;
  border-radius: 38px;
  background: #090c11;
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.48);
  transform: rotate(-4deg);
}

.compat-layout,
.privacy-layout,
.faq-layout,
.content-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(420px, 1.2fr);
  gap: clamp(54px, 10vw, 140px);
  align-items: start;
}

.compat-card {
  padding: 28px;
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  background: var(--surface);
}

.compat-card h3 { margin: 0 0 15px; font-size: 1.25rem; }
.compat-card p, .compat-card li { color: var(--muted); }
.compat-card ul { margin: 0; padding-left: 20px; }
.compat-card li + li { margin-top: 9px; }

.confirmed-bike {
  display: flex;
  gap: 13px;
  align-items: center;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.confirmed-bike i {
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--green) 18%, transparent);
}

.privacy-promise {
  background: #11161c;
  color: #f7f2e9;
}

@media (prefers-color-scheme: light) {
  .privacy-promise { background: #171b21; }
}

.privacy-promise .eyebrow { color: #ff7645; }
.privacy-promise .text-link { color: #f7f2e9; }

.privacy-statement {
  margin: 0 0 30px;
  color: #d7d2c9;
  font-size: 1.2rem;
  font-weight: 650;
}

.privacy-list {
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
}

.privacy-list li {
  display: grid;
  grid-template-columns: 48px 1fr;
  padding: 15px 0;
  border-top: 1px solid rgba(247, 242, 233, 0.13);
  color: #d7d2c9;
}

.privacy-list li:last-child { border-bottom: 1px solid rgba(247, 242, 233, 0.13); }
.privacy-list span { color: #ff7645; font: 0.76rem/1.65 var(--data); }

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

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

.faq-list summary {
  position: relative;
  padding: 22px 44px 22px 0;
  font-weight: 760;
  cursor: pointer;
  list-style: none;
}

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

.faq-list summary::after {
  content: "+";
  position: absolute;
  top: 16px;
  right: 2px;
  color: var(--accent);
  font: 300 1.7rem/1 var(--body);
}

.faq-list details[open] summary::after { content: "−"; }

.faq-list details p {
  max-width: 58ch;
  margin: -6px 0 23px;
  color: var(--muted);
}

.closing-cta { background: var(--bg-raised); }

.closing-inner {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 60px;
}

.closing-inner h2 { max-width: 720px; }

.site-footer {
  padding: 48px 0 62px;
  color: var(--muted);
  font-size: 0.82rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px 50px;
  align-items: start;
}

.footer-inner > div { display: grid; }
.footer-inner strong { color: var(--ink); font-size: 1rem; }
.footer-inner nav { display: flex; gap: 22px; }
.footer-inner a { text-decoration: none; }
.footer-inner a:hover { color: var(--ink); }
.footer-inner p { grid-column: 1 / -1; max-width: 850px; margin: 0; }

.page-hero {
  padding: 170px 0 78px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 82% 22%, rgba(255, 90, 31, 0.15), transparent 28%),
    var(--bg-raised);
}

.page-hero h1 { max-width: 900px; font-size: clamp(3.4rem, 8vw, 7rem); }
.page-hero > .shell > p:last-child { max-width: 680px; margin: 25px 0 0; color: var(--muted); font-size: 1.1rem; }

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.support-item {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
}

.support-item h2 { margin: 0 0 10px; font-size: 1.45rem; }
.support-item p { margin: 0 0 18px; color: var(--muted); }

.side-nav {
  position: sticky;
  top: 110px;
  display: grid;
  gap: 9px;
}

.side-nav a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
}

.side-nav a:hover { color: var(--accent); }

.prose { max-width: 720px; }
.prose section { scroll-margin-top: 100px; }
.prose section + section { margin-top: 55px; }
.prose h2 { margin: 0 0 15px; font-size: 2rem; letter-spacing: -0.04em; }
.prose h3 { margin: 28px 0 8px; font-size: 1.15rem; }
.prose p, .prose li { color: var(--muted); }
.prose ul, .prose ol { padding-left: 21px; }
.prose li + li { margin-top: 8px; }
.prose a { color: var(--accent); }

.policy-callout {
  padding: 20px 22px;
  border-left: 4px solid var(--accent);
  border-radius: 0 12px 12px 0;
  background: var(--accent-soft);
  color: var(--ink) !important;
  font-weight: 700;
}

.report-list { counter-reset: reports; padding: 0 !important; list-style: none; }
.report-list li { display: grid; grid-template-columns: 38px 1fr; align-items: start; }
.report-list li::before { counter-increment: reports; content: counter(reports, decimal-leading-zero); color: var(--accent); font: 0.75rem/1.65 var(--data); }

.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 560ms ease, transform 560ms ease;
}

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

@media (max-width: 1040px) {
  .hero { min-height: 990px; }
  .hero-content { padding-top: 142px; }
  .hero-content > * { max-width: 650px; }
  .hero-scene { top: 530px; right: 50%; width: 700px; transform: translateX(50%); }
  .hero-phone-left { left: 26px; }
  .hero-phone-center { left: 226px; }
  .hero-phone-right { right: 22px; }
  .hero-watch { right: 130px; bottom: 20px; }
  .proof-grid { grid-template-columns: repeat(2, 1fr); }
  .proof-grid > div:nth-child(3) { border-top: 1px solid var(--line); }
  .proof-grid > div:nth-child(4) { border-top: 1px solid var(--line); border-right: 1px solid var(--line); }
  .watch-layout { grid-template-columns: 1fr; }
  .watch-visual { width: min(650px, 100%); }
}

@media (max-width: 820px) {
  :root { --header-height: 68px; }
  .site-header { background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(18px); }
  .menu-button { display: block; }
  .site-nav {
    position: fixed;
    inset: var(--header-height) 0 auto;
    display: grid;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    border-bottom: 1px solid transparent;
    background: var(--bg);
    opacity: 0;
    transition: max-height 220ms ease, opacity 180ms ease, border-color 180ms ease;
  }
  .site-nav.is-open { max-height: 430px; border-color: var(--line); opacity: 1; }
  .site-nav a { padding: 15px 24px; border-top: 1px solid var(--line); }
  .site-nav .nav-highlight { margin: 12px 24px 20px; padding: 13px 15px; text-align: center; }
  .section { padding: 82px 0; }
  .ride-story { background: var(--bg); }
  .ride-layout { grid-template-columns: 1fr; gap: 48px; }
  .ride-stage { position: relative; top: auto; }
  .story-steps { padding-left: 0; }
  .story-steps::before { left: 21px; }
  .feature-inner { grid-template-columns: 48px 1fr; }
  .feature-inner .signal { display: none; }
  .compat-layout, .privacy-layout, .faq-layout, .content-layout { grid-template-columns: 1fr; gap: 42px; }
  .side-nav { position: static; display: flex; flex-wrap: wrap; gap: 7px 18px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
  .closing-inner { display: block; }
  .closing-inner .action-row { margin-top: 30px; }
}

@media (max-width: 620px) {
  :root { --shell: min(calc(100% - 32px), 1180px); }
  .hero { min-height: 950px; }
  .hero-content { padding-top: 114px; }
  .hero h1 { font-size: 3.7rem; }
  .hero-copy { font-size: 0.98rem; }
  .action-row { align-items: flex-start; gap: 20px; flex-direction: column; }
  .hero-scene { top: 605px; width: 430px; height: 400px; }
  .hero-phone { width: 140px; border-width: 5px; border-radius: 25px; }
  .hero-phone-left { top: 60px; left: 8px; }
  .hero-phone-center { top: 6px; left: 142px; width: 158px; }
  .hero-phone-right { top: 52px; right: 6px; }
  .hero-watch { right: 74px; bottom: -2px; width: 150px; border-width: 5px; border-radius: 34px; }
  .hero-next { display: none; }
  .proof-grid { grid-template-columns: 1fr 1fr; }
  .proof-grid > div { min-height: 104px; padding: 17px 13px; align-items: flex-start; }
  .proof-copy strong { font-size: 0.82rem; }
  .proof-copy span { display: none; }
  .section-heading h2, .privacy-lead h2, .closing-inner h2 { font-size: 2.65rem; }
  .phone-shell { width: 225px; border-width: 6px; border-radius: 34px; }
  .phone-shell.is-watch { width: min(300px, 100%); border-width: 6px; }
  .story-step { grid-template-columns: 42px 1fr; gap: 15px; padding-right: 12px; }
  .story-copy strong { font-size: 1.12rem; }
  .story-copy small { font-size: 0.86rem; }
  .feature-inner { grid-template-columns: 34px 1fr; gap: 12px; }
  .watch-visual { min-height: 390px; }
  .showcase-phone { width: 168px; border-width: 6px; border-radius: 29px; }
  .showcase-watch { right: 112px; width: 235px; border-width: 6px; border-radius: 29px; }
  .support-grid { grid-template-columns: 1fr; }
  .page-hero { padding: 125px 0 56px; }
  .page-hero h1 { font-size: 3.2rem; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-inner nav { flex-wrap: wrap; }
  .footer-inner p { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}