:root {
  --navy: #071b2c;
  --navy-2: #0d2c44;
  --cyan: #11b8e9;
  --cyan-soft: #dff7fd;
  --blue: #0877f9;
  --coral: #f1646c;
  --paper: #f4f8f7;
  --white: #ffffff;
  --ink: #102231;
  --muted: #647783;
  --line: #cbd8dc;
  --display:
    "Avenir Next", "DIN Alternate", "PingFang SC", "Microsoft YaHei", sans-serif;
  --body: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--body);
  letter-spacing: 0;
  overflow-x: hidden;
}
body.dialog-open {
  overflow: hidden;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
button {
  font: inherit;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  width: 100%;
  height: 82px;
  padding: 0 clamp(24px, 5vw, 80px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--white);
  transition:
    background 0.3s ease,
    height 0.3s ease,
    box-shadow 0.3s ease;
}
.site-header.scrolled {
  height: 68px;
  color: var(--ink);
  background: rgba(244, 248, 247, 0.94);
  box-shadow: 0 1px 0 rgba(7, 27, 44, 0.1);
  backdrop-filter: blur(16px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.brand-mark {
  width: 38px;
  height: 38px;
  padding: 5px;
  overflow: hidden;
  background: var(--white);
  border-radius: 7px;
}
.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.brand-name {
  font: 700 20px/1 var(--display);
  white-space: nowrap;
}
.brand-en {
  padding-left: 9px;
  border-left: 1px solid currentColor;
  font: 600 10px/1 var(--display);
  letter-spacing: 0;
  opacity: 0.6;
}
.site-header nav {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 42px);
  font-size: 14px;
}
.site-header nav a {
  opacity: 0.78;
  transition: opacity 0.2s ease;
}
.site-header nav a:hover {
  opacity: 1;
}
.nav-download {
  height: 42px;
  padding: 0 22px;
  color: var(--navy);
  background: var(--white);
  border: 0;
  border-radius: 4px;
  cursor: pointer;
}
.scrolled .nav-download {
  color: var(--white);
  background: var(--coral);
}

.hero {
  position: relative;
  min-height: min(900px, 94vh);
  padding: 150px clamp(24px, 7vw, 112px) 85px;
  display: grid;
  grid-template-columns: minmax(440px, 0.94fr) minmax(430px, 1.06fr);
  align-items: center;
  color: var(--white);
  background: var(--navy);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to right, black, transparent 75%);
}
.hero::after {
  content: "";
  position: absolute;
  right: -10vw;
  top: -34vw;
  width: 82vw;
  height: 82vw;
  border: 1px solid rgba(17, 184, 233, 0.22);
  border-radius: 50%;
  box-shadow:
    0 0 0 80px rgba(17, 184, 233, 0.04),
    0 0 0 160px rgba(17, 184, 233, 0.03);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 660px;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 28px;
  color: #a9dce9;
  font-size: 13px;
}
.eyebrow span {
  width: 34px;
  height: 2px;
  background: var(--coral);
}
.hero h1 {
  margin: 0;
  font: 800 118px/0.9 var(--display);
}
.hero-slogan {
  margin: 28px 0 22px;
  font: 650 54px/1.18 var(--display);
}
.hero-copy {
  margin: 0;
  color: #b8c9d2;
  font-size: 16px;
  line-height: 1.9;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-top: 38px;
}
.primary-button {
  min-width: 168px;
  height: 56px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  color: var(--navy);
  background: var(--cyan);
  border: 0;
  border-radius: 4px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 12px 35px rgba(17, 184, 233, 0.2);
  transition:
    transform 0.2s ease,
    background 0.2s ease;
}
.primary-button:hover {
  transform: translateY(-3px);
  background: #3ccaf1;
}
.primary-button.coral {
  color: var(--white);
  background: var(--coral);
  box-shadow: 0 12px 35px rgba(241, 100, 108, 0.2);
}
.text-link {
  padding-bottom: 5px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.25);
  color: #d7e5e9;
  font-size: 14px;
}
.hero-stats {
  margin: 54px 0 0;
  display: flex;
  gap: clamp(25px, 4vw, 60px);
}
.hero-stats div {
  padding-left: 14px;
  border-left: 1px solid rgba(255, 255, 255, 0.18);
}
.hero-stats dt {
  font: 700 18px/1 var(--display);
}
.hero-stats dd {
  margin: 8px 0 0;
  color: #8098a5;
  font-size: 12px;
}

.hero-visual {
  position: relative;
  z-index: 2;
  width: min(36vw, 470px);
  height: 610px;
  margin-left: auto;
  align-self: end;
}
.hero-screen {
  position: absolute;
  z-index: 2;
  width: 100%;
  margin: 0;
  overflow: hidden;
  border: 8px solid rgba(255, 255, 255, 0.92);
  border-bottom: 0;
  border-radius: 48px 48px 0 0;
  box-shadow: 0 35px 80px rgba(0, 0, 0, 0.45);
  top: 62px;
  transform: rotate(2.5deg);
}
.hero-screen img {
  width: 100%;
}
.screen-shadow {
  position: absolute;
  left: -7%;
  right: -7%;
  bottom: -3%;
  height: 64%;
  background: rgba(17, 184, 233, 0.16);
  filter: blur(50px);
}
.visual-note {
  position: absolute;
  z-index: 4;
  left: -24%;
  bottom: 4%;
  margin: 0;
  padding: 14px 18px;
  color: #cee5eb;
  background: rgba(7, 27, 44, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 12px;
  backdrop-filter: blur(12px);
}
.visual-note b {
  margin-right: 10px;
  color: var(--coral);
  font: 700 10px/1 var(--display);
  letter-spacing: 0;
}
.route-line {
  position: absolute;
  z-index: 3;
  left: -18%;
  top: 32%;
  width: 45%;
  border-top: 1px dashed rgba(255, 255, 255, 0.32);
  transform: rotate(-16deg);
}
.route-line i {
  position: absolute;
  top: -4px;
  width: 7px;
  height: 7px;
  background: var(--coral);
  border-radius: 50%;
}
.route-line i:nth-child(1) {
  left: 0;
}
.route-line i:nth-child(2) {
  left: 50%;
}
.route-line i:nth-child(3) {
  right: 0;
}
.hero-map {
  position: absolute;
  right: 4vw;
  top: 105px;
  z-index: 3;
  display: flex;
  gap: 18px;
  color: rgba(255, 255, 255, 0.3);
  font: 600 9px/1 var(--display);
  letter-spacing: 0;
}
.hero-scroll {
  position: absolute;
  z-index: 3;
  left: 30px;
  bottom: 34px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, 0.35);
  font: 600 8px/1 var(--display);
  letter-spacing: 0;
  writing-mode: vertical-rl;
}
.hero-scroll span {
  width: 1px;
  height: 38px;
  background: var(--coral);
}

.signal-band {
  min-height: 150px;
  padding: 32px clamp(24px, 7vw, 112px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.signal-band > p {
  max-width: 260px;
  margin: 0;
  font: 650 20px/1.45 var(--display);
}
.signal-items {
  flex: 1;
  max-width: 780px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.signal-items span {
  padding: 9px 18px;
  border-left: 1px solid var(--line);
  font-size: 14px;
  white-space: nowrap;
}
.signal-items b {
  display: block;
  margin-bottom: 8px;
  color: var(--coral);
  font: 700 10px/1 var(--display);
}

.section {
  padding: 130px clamp(24px, 7vw, 112px);
}
.section-heading {
  max-width: 1220px;
  margin: 0 auto 90px;
  display: grid;
  grid-template-columns: 1.15fr 0.65fr;
  align-items: end;
  gap: 80px;
}
.section-index {
  margin: 0 0 22px;
  color: var(--blue);
  font: 700 11px/1 var(--display);
  letter-spacing: 0;
}
.section-index.light {
  color: var(--cyan);
}
.section-heading h2,
.screens-heading h2,
.audience-title h2,
.cta-content h2 {
  margin: 0;
  font: 750 70px/1.12 var(--display);
}
.section-heading > p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}
.feature-rows {
  max-width: 1220px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
}
.feature-row {
  min-height: 920px;
  padding: 70px 0;
  display: grid;
  grid-template-columns: 60px minmax(300px, 0.78fr) minmax(360px, 1fr);
  align-items: center;
  gap: clamp(28px, 5vw, 75px);
  border-bottom: 1px solid var(--line);
}
.feature-row.reverse {
  grid-template-columns: 60px minmax(360px, 1fr) minmax(300px, 0.78fr);
}
.feature-row.reverse .feature-copy {
  grid-column: 3;
}
.feature-row.reverse .feature-image {
  grid-column: 2;
  grid-row: 1;
}
.feature-number {
  align-self: start;
  margin: 8px 0 0;
  color: var(--muted);
  font: 700 11px/1 var(--display);
}
.feature-copy {
  position: relative;
  z-index: 2;
}
.feature-label {
  margin: 0 0 15px;
  color: var(--coral);
  font: 700 10px/1 var(--display);
  letter-spacing: 0;
}
.feature-copy h3 {
  margin: 0 0 22px;
  font: 700 44px/1.16 var(--display);
}
.feature-copy > p:not(.feature-label) {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}
.feature-image {
  width: min(100%, 360px);
  height: auto;
  aspect-ratio: 1290 / 2796;
  margin: 0;
  justify-self: center;
  overflow: hidden;
  background: #d7f2fa;
  border-radius: 6px;
  box-shadow: 0 24px 50px rgba(16, 34, 49, 0.1);
}
.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.chips {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chips span {
  padding: 7px 12px;
  color: var(--blue);
  background: #e5f1ff;
  border-radius: 3px;
  font-size: 12px;
}
.trust-stamp {
  width: 132px;
  height: 132px;
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--coral);
  border: 1px solid var(--coral);
  border-radius: 50%;
  transform: rotate(-7deg);
}
.trust-stamp::before,
.trust-stamp::after {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1px dashed currentColor;
  border-radius: 50%;
  opacity: 0.45;
}
.trust-stamp span {
  font: 700 8px/1 var(--display);
  letter-spacing: 0;
}
.trust-stamp b {
  margin: 8px 0 5px;
  font-size: 18px;
}
.trust-stamp small {
  font-size: 9px;
}
.message-demo {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.message-demo span {
  width: fit-content;
  max-width: 90%;
  padding: 11px 15px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 3px 12px 12px 12px;
  color: #526875;
  font-size: 12px;
  box-shadow: 0 10px 25px rgba(16, 34, 49, 0.06);
}
.message-demo span:last-child {
  align-self: flex-end;
  color: var(--blue);
  background: #e2f0ff;
  border: 0;
  border-radius: 12px 3px 12px 12px;
}
.document-lines {
  width: 160px;
  margin-top: 30px;
  padding: 17px;
  background: var(--white);
  border-left: 4px solid var(--cyan);
  box-shadow: 0 8px 22px rgba(16, 34, 49, 0.08);
}
.document-lines i {
  display: block;
  width: 100%;
  height: 5px;
  margin: 7px 0;
  background: #d9e3e6;
}
.document-lines i:nth-child(2) {
  width: 76%;
}
.document-lines i:nth-child(3) {
  width: 88%;
}

.screens {
  padding: 130px 0;
  color: var(--white);
  background: var(--navy);
  overflow: hidden;
}
.screens-inner {
  max-width: 1440px;
  margin: 0 auto;
}
.screens-heading {
  padding: 0 clamp(24px, 7vw, 112px);
  display: grid;
  grid-template-columns: 1fr 0.7fr;
  align-items: end;
  gap: 80px;
}
.screens-heading .section-index {
  grid-column: 1 / -1;
  margin-bottom: -48px;
}
.screens-heading > p:last-child {
  margin: 0;
  color: #93a9b5;
  font-size: 15px;
  line-height: 1.8;
}
.carousel {
  margin-top: 78px;
}
.carousel-track {
  display: flex;
  gap: 24px;
  padding: 0 max(24px, calc((100vw - 1220px) / 2));
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  outline: none;
}
.carousel-track::-webkit-scrollbar {
  display: none;
}
.screen-card {
  flex: 0 0 clamp(238px, 23vw, 330px);
  margin: 0;
  scroll-snap-align: center;
  opacity: 0.42;
  transform: scale(0.9);
  transition:
    opacity 0.35s ease,
    transform 0.35s ease;
}
.screen-card.active {
  opacity: 1;
  transform: scale(1);
}
.screen-card img {
  width: 100%;
  aspect-ratio: 1290 / 2796;
  object-fit: cover;
  border-radius: 7px;
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.35);
}
.screen-card figcaption {
  margin-top: 18px;
  padding-top: 13px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  color: #a7bbc5;
  font-size: 12px;
}
.carousel-controls {
  max-width: 1220px;
  margin: 42px auto 0;
  padding: 0 24px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 20px;
}
.carousel-controls button {
  width: 48px;
  height: 48px;
  color: var(--white);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  cursor: pointer;
  transition:
    background 0.2s ease,
    color 0.2s ease;
}
.carousel-controls button:hover {
  color: var(--navy);
  background: var(--cyan);
}
.carousel-controls p {
  margin: 0 10px;
  font: 600 12px/1 var(--display);
}
.carousel-controls b {
  color: var(--cyan);
  font-size: 18px;
}
.carousel-controls span {
  color: #708894;
}

.audience {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 100px;
}
.audience-title {
  position: sticky;
  top: 120px;
  align-self: start;
}
.audience-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}
.audience-list li {
  min-height: 124px;
  display: grid;
  grid-template-columns: 48px 1fr 1.1fr 30px;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  transition:
    padding 0.2s ease,
    color 0.2s ease;
}
.audience-list li:hover {
  padding: 0 12px;
  color: var(--blue);
}
.audience-list span {
  color: var(--coral);
  font: 700 10px/1 var(--display);
}
.audience-list b {
  font-size: 20px;
}
.audience-list p {
  color: var(--muted);
  font-size: 14px;
}
.audience-list i {
  font-style: normal;
  font-size: 20px;
}

.final-cta {
  position: relative;
  min-height: 650px;
  padding: 120px clamp(24px, 8vw, 130px);
  display: flex;
  align-items: center;
  color: var(--white);
  background: #0b3f58;
  overflow: hidden;
}
.final-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 52%;
  width: 1px;
  height: 100%;
  background: rgba(255, 255, 255, 0.13);
}
.cta-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}
.cta-kicker {
  display: block;
  margin-bottom: 25px;
  color: var(--cyan);
  font: 700 11px/1 var(--display);
  letter-spacing: 0;
}
.cta-content p {
  margin: 28px 0 34px;
  color: #b0cad5;
  line-height: 1.8;
}
.cta-radar {
  position: absolute;
  right: -5vw;
  width: min(55vw, 700px);
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 50%;
}
.cta-radar i {
  position: absolute;
  inset: 17%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
}
.cta-radar i:nth-child(2) {
  inset: 34%;
}
.cta-radar i:nth-child(3) {
  inset: 49.7%;
  background: var(--coral);
  border: 0;
}
.cta-radar::before,
.cta-radar::after {
  content: "";
  position: absolute;
  background: rgba(255, 255, 255, 0.12);
}
.cta-radar::before {
  left: 50%;
  top: 0;
  width: 1px;
  height: 100%;
}
.cta-radar::after {
  top: 50%;
  left: 0;
  height: 1px;
  width: 100%;
}
.cta-radar span {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 45%;
  height: 1px;
  background: var(--cyan);
  transform-origin: left;
  transform: rotate(-40deg);
  animation: radar 5s linear infinite;
}
.cta-brand {
  position: absolute;
  right: -12px;
  bottom: -32px;
  color: rgba(255, 255, 255, 0.035);
  font: 800 180px/1 var(--display);
}

footer {
  min-height: 130px;
  padding: 30px clamp(24px, 7vw, 112px);
  display: flex;
  align-items: center;
  gap: 30px;
  color: #94a2a9;
  background: var(--paper);
  font-size: 12px;
}
footer > p:nth-child(2) {
  margin-right: auto;
}
.footer-brand {
  color: var(--ink);
}
.footer-brand .brand-mark {
  border: 1px solid var(--line);
}

.download-dialog {
  width: min(92vw, 460px);
  padding: 44px;
  color: var(--ink);
  background: var(--paper);
  border: 0;
  border-radius: 7px;
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.42);
}
.download-dialog::backdrop {
  background: rgba(3, 14, 23, 0.76);
  backdrop-filter: blur(8px);
}
.dialog-close {
  position: absolute;
  right: 16px;
  top: 14px;
  width: 36px;
  height: 36px;
  color: #62727a;
  background: transparent;
  border: 0;
  font-size: 28px;
  cursor: pointer;
}
.dialog-logo {
  width: 68px;
  height: 68px;
  margin-bottom: 24px;
  padding: 8px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 7px;
}
.dialog-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.dialog-kicker {
  margin: 0 0 8px;
  color: var(--coral);
  font: 700 9px/1 var(--display);
  letter-spacing: 0;
}
.download-dialog h2 {
  margin: 0;
  font: 750 32px/1.2 var(--display);
}
.download-dialog > p:not(.dialog-kicker):not(.dialog-status) {
  margin: 12px 0 26px;
  color: var(--muted);
  font-size: 14px;
}
.store-options {
  display: grid;
  gap: 10px;
}
.store-options[hidden] {
  display: none;
}
.store-options a {
  min-height: 68px;
  padding: 0 18px;
  display: grid;
  grid-template-columns: 50px 1fr 24px;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 4px;
  transition:
    border-color 0.2s ease,
    transform 0.2s ease;
}
.store-options a:hover {
  border-color: var(--blue);
  transform: translateX(3px);
}
.store-options span {
  color: var(--blue);
  font: 700 11px/1 var(--display);
}
.store-options b {
  font-size: 15px;
}
.store-options i {
  font-style: normal;
}
.dialog-status {
  min-height: 19px;
  margin: 16px 0 0;
  color: var(--coral);
  font-size: 12px;
}
.wechat-guide[hidden] {
  display: none;
}
.wechat-guide {
  margin-top: 22px;
}
.wechat-guide-step {
  min-height: 42px;
  display: flex;
  align-items: center;
  gap: 13px;
  border-bottom: 1px solid var(--line);
}
.wechat-guide-step span {
  color: var(--coral);
  font: 700 10px/1 var(--display);
}
.wechat-guide-step p {
  margin: 0;
  color: var(--ink);
  font-size: 14px;
}
.wechat-guide-step b {
  color: var(--blue);
  font-size: 18px;
  letter-spacing: 0;
}
.copy-download {
  width: 100%;
  height: 52px;
  margin-top: 20px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--white);
  background: var(--coral);
  border: 0;
  border-radius: 4px;
  font-weight: 700;
  cursor: pointer;
  transition:
    background 0.2s ease,
    transform 0.2s ease;
}
.copy-download:hover {
  background: #e6535c;
  transform: translateY(-2px);
}
.download-url {
  display: block;
  margin-top: 14px;
  color: var(--muted);
  font: 10px/1.6 var(--body);
  word-break: break-all;
}
.mobile-download {
  display: none;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.75s ease,
    transform 0.75s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@keyframes radar {
  to {
    transform: rotate(320deg);
  }
}

@media (max-width: 900px) {
  .site-header {
    height: 68px;
    padding: 0 20px;
  }
  .site-header nav a {
    display: none;
  }
  .site-header .nav-download {
    display: none;
  }
  .brand-en {
    display: none;
  }
  .hero {
    min-height: 810px;
    padding: 92px 24px 0;
    display: block;
  }
  .hero::after {
    right: -50vw;
    top: 30vw;
    width: 130vw;
    height: 130vw;
  }
  .hero h1 {
    font-size: 64px;
  }
  .hero-slogan {
    margin-top: 22px;
    font-size: 34px;
  }
  .hero-copy {
    font-size: 14px;
  }
  .hero-copy br {
    display: none;
  }
  .hero-actions {
    margin-top: 28px;
  }
  .primary-button {
    height: 52px;
  }
  .hero-stats {
    margin-top: 35px;
    gap: 12px;
    justify-content: space-between;
  }
  .hero-stats dd {
    max-width: 80px;
  }
  .hero-visual {
    width: min(72vw, 330px);
    height: 290px;
    margin: 20px auto 0;
  }
  .hero-screen {
    top: 0;
    border-width: 6px;
    border-radius: 34px 34px 0 0;
    transform: rotate(1.5deg);
  }
  .visual-note {
    left: -10%;
    bottom: 9%;
  }
  .route-line,
  .hero-map,
  .hero-scroll {
    display: none;
  }
  .signal-band {
    padding: 32px 24px;
    display: block;
  }
  .signal-band > p {
    margin-bottom: 30px;
  }
  .signal-items {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px 0;
  }
  .signal-items span:nth-child(odd) {
    padding-left: 0;
    border-left: 0;
  }
  .section {
    padding: 90px 24px;
  }
  .section-heading,
  .screens-heading {
    margin-bottom: 60px;
    display: block;
  }
  .section-heading > p,
  .screens-heading > p:last-child {
    margin-top: 28px;
  }
  .section-heading h2,
  .screens-heading h2,
  .audience-title h2,
  .cta-content h2 {
    font-size: 40px;
  }
  .feature-row,
  .feature-row.reverse {
    min-height: 0;
    padding: 58px 0;
    grid-template-columns: 34px 1fr;
    align-items: start;
    gap: 18px;
  }
  .feature-row .feature-copy,
  .feature-row.reverse .feature-copy {
    grid-column: 2;
    grid-row: 1;
  }
  .feature-row .feature-image,
  .feature-row.reverse .feature-image {
    grid-column: 1 / -1;
    grid-row: 2;
    width: min(82vw, 320px);
    height: auto;
    margin: 28px auto 0;
  }
  .feature-number {
    grid-column: 1;
  }
  .screens {
    padding: 90px 0;
  }
  .screens-heading .section-index {
    margin-bottom: 22px;
  }
  .carousel {
    margin-top: 52px;
  }
  .screen-card {
    flex-basis: min(72vw, 300px);
  }
  .carousel-controls {
    display: none;
  }
  .audience {
    display: block;
  }
  .audience-title {
    position: static;
    margin-bottom: 60px;
  }
  .audience-list li {
    grid-template-columns: 36px 1fr 28px;
  }
  .audience-list p {
    grid-column: 2;
    margin: -34px 0 0;
    transform: translateY(25px);
  }
  .audience-list i {
    grid-column: 3;
    grid-row: 1 / span 2;
  }
  .final-cta {
    min-height: 620px;
    padding: 90px 24px;
    align-items: flex-start;
  }
  .final-cta::before {
    display: none;
  }
  .cta-radar {
    right: -44vw;
    bottom: -16vw;
    width: 115vw;
  }
  .cta-content p {
    max-width: 360px;
  }
  .cta-brand {
    font-size: 70px;
  }
  footer {
    padding-bottom: 110px;
    flex-wrap: wrap;
    gap: 12px 24px;
  }
  .footer-brand {
    width: 100%;
  }
  footer > p:nth-child(2) {
    margin: 0 auto 0 0;
  }
  .mobile-download {
    position: fixed;
    z-index: 45;
    left: 16px;
    right: 16px;
    bottom: max(14px, env(safe-area-inset-bottom));
    height: 54px;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--white);
    background: var(--coral);
    border: 0;
    border-radius: 4px;
    box-shadow: 0 12px 30px rgba(7, 27, 44, 0.35);
    font-weight: 700;
    opacity: 0;
    pointer-events: none;
    transform: translateY(calc(100% + 30px));
    transition:
      opacity 0.25s ease,
      transform 0.25s ease;
  }
  .mobile-download.visible {
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }
}

@media (max-width: 420px) {
  .hero {
    min-height: 810px;
  }
  .hero h1 {
    font-size: 58px;
  }
  .hero-slogan {
    font-size: 31px;
  }
  .hero-stats dt {
    font-size: 15px;
  }
  .hero-stats dd {
    font-size: 10px;
  }
  .feature-row .feature-image,
  .feature-row.reverse .feature-image {
    width: min(82vw, 300px);
    height: auto;
  }
  .download-dialog {
    padding: 38px 24px 24px;
  }
}

@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;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}