:root {
  --brand: #13b994;
  --brand-dark: #087d67;
  --brand-light: #dff8f1;
  --ink: #12201e;
  --ink-soft: #5d6d69;
  --dark: #071715;
  --dark-soft: #0d2421;
  --white: #ffffff;
  --surface: #f3f7f5;
  --surface-soft: #f8faf9;
  --line: #dce6e2;
  --line-dark: rgba(255, 255, 255, 0.12);
  --red: #d9514c;
  --shadow:
    0 24px 65px rgba(15, 53, 47, 0.1);
  --shadow-dark:
    0 30px 80px rgba(0, 0, 0, 0.28);
  --container: 1240px;
  --radius-large: 32px;
  --radius-medium: 22px;
  --radius-small: 14px;
  --transition: 220ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family:
    Inter,
    "PingFang SC",
    "Microsoft YaHei",
    "Noto Sans SC",
    Arial,
    sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

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

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

button {
  border: 0;
  font: inherit;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 9999;
  padding: 10px 16px;
  color: #ffffff;
  background: #000000;
  transform: translateY(-160%);
  transition: transform var(--transition);
}

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

.section {
  padding: 108px 28px;
}

.content-container,
.header-inner,
.footer-main,
.footer-bottom {
  width: min(100%, var(--container));
  margin: 0 auto;
}

.section-label {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--brand-dark);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.19em;
}

.light-label {
  color: #7bebd0;
}

.section-intro {
  display: grid;
  margin-bottom: 52px;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.7fr);
  gap: 70px;
  align-items: end;
}

.section-intro h2,
.steps-header h2,
.security-copy h2,
.summary-header h2,
.final-download-copy h2 {
  margin: 0;
  font-size: clamp(35px, 4.6vw, 59px);
  line-height: 1.08;
  letter-spacing: -0.048em;
}

.section-intro p {
  max-width: 500px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 16px;
  justify-self: end;
}

.centered-intro {
  display: block;
  max-width: 790px;
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.centered-intro p {
  max-width: 650px;
  margin: 20px auto 0;
}

/* Header */

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(5, 20, 16, 0.94);
  backdrop-filter: blur(18px);
  transition:
    background var(--transition),
    box-shadow var(--transition),
    border-color var(--transition);
}

.site-header.scrolled {
  border-color: rgba(255, 255, 255, 0.08);
  background: rgba(5, 20, 16, 0.94);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  min-height: 80px;
  align-items: center;
  gap: 36px;
  padding: 0 28px;
}

.site-logo {
  width: 178px;
  flex-shrink: 0;
}

.site-logo img {
  width: 100%;
  height: auto;
}

.desktop-nav {
  display: flex;
  margin-left: auto;
  align-items: center;
  gap: 32px;
}

.desktop-nav a {
  position: relative;
  color: rgba(231, 244, 239, 0.68);
  font-size: 14px;
  font-weight: 650;
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  background: var(--brand);
  content: "";
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition);
}

.desktop-nav a:hover::after {
  transform: scaleX(1);
}

.nav-download {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 20px;
  border-radius: 999px;
  color: #ffffff;
  background: var(--dark);
  font-size: 14px;
  font-weight: 750;
  transition:
    transform var(--transition),
    background var(--transition);
}

.nav-download:hover {
  background: var(--brand-dark);
  transform: translateY(-2px);
}

.menu-button {
  display: none;
  width: 46px;
  height: 46px;
  margin-left: auto;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: #ffffff;
  transition:
    transform var(--transition),
    opacity var(--transition);
}

.menu-button.active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.menu-button.active span:nth-child(2) {
  opacity: 0;
}

.menu-button.active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-navigation {
  display: none;
}

/* Hero */

.hero {
  position: relative;
  min-height: 805px;
  overflow: hidden;
  padding: 132px 28px 65px;
  background:
    radial-gradient(circle at 11% 40%, rgba(19, 185, 148, 0.11), transparent 25%),
    linear-gradient(135deg, #f8fbfa 0%, #edf4f1 58%, #f7f9f8 100%);
}

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.65));
  content: "";
  pointer-events: none;
}

.hero-decoration {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero-decoration-one {
  top: 90px;
  right: -180px;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(12, 141, 112, 0.09);
}

.hero-decoration-two {
  top: 185px;
  right: -75px;
  width: 330px;
  height: 330px;
  border: 1px solid rgba(12, 141, 112, 0.09);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  width: min(100%, 1320px);
  min-height: 600px;
  margin: 0 auto;
  grid-template-columns: minmax(430px, 0.9fr) minmax(560px, 1.1fr);
  gap: 22px;
  align-items: center;
}

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

.hero-label {
  display: inline-flex;
  margin-bottom: 27px;
  align-items: center;
  gap: 12px;
  color: var(--brand-dark);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.hero-label img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  box-shadow: 0 8px 20px rgba(12, 85, 70, 0.13);
}

.hero h1 {
  max-width: 680px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(56px, 6.6vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.062em;
}

.hero h1 span {
  display: block;
  max-width: 610px;
  margin-top: 18px;
  color: #58706a;
  font-size: 0.43em;
  font-weight: 520;
  line-height: 1.22;
  letter-spacing: -0.035em;
}

.hero-content > p {
  max-width: 620px;
  margin: 29px 0 0;
  color: var(--ink-soft);
  font-size: 17px;
}

.hero-actions {
  display: flex;
  margin-top: 35px;
  flex-wrap: wrap;
  gap: 13px;
}

.primary-button,
.secondary-button,
.outline-button,
.security-button {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 25px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 760;
  transition:
    transform var(--transition),
    background var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.primary-button {
  color: #ffffff;
  background: var(--dark);
  box-shadow: 0 16px 36px rgba(7, 38, 33, 0.16);
}

.primary-button:hover {
  background: var(--brand-dark);
  box-shadow: 0 20px 42px rgba(7, 94, 75, 0.2);
  transform: translateY(-3px);
}

.secondary-button {
  border-color: #cfdcd8;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
}

.secondary-button:hover {
  border-color: var(--brand);
  background: #ffffff;
  transform: translateY(-3px);
}

.download-arrow {
  font-size: 18px;
}

.hero-details {
  display: grid;
  max-width: 650px;
  margin-top: 45px;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(18, 72, 62, 0.12);
}

.hero-details > div {
  padding: 19px 20px 0 0;
}

.hero-details strong {
  display: block;
  color: var(--ink);
  font-size: 14px;
}

.hero-details span {
  display: block;
  margin-top: 4px;
  color: #74837f;
  font-size: 12px;
}

.hero-image {
  position: relative;
  width: 112%;
  margin-left: -5%;
}

.hero-image::before {
  position: absolute;
  top: 17%;
  right: 12%;
  width: 52%;
  height: 58%;
  border-radius: 50%;
  background: rgba(20, 190, 150, 0.12);
  content: "";
  filter: blur(65px);
}

.hero-image img {
  position: relative;
  z-index: 2;
  width: 100%;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 35px 58px rgba(8, 47, 40, 0.14));
}

/* Official identity */

.official-section {
  background: #ffffff;
}

.identity-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(330px, 0.7fr);
  gap: 22px;
}

.identity-brand-panel,
.identity-icon-panel {
  min-height: 440px;
  padding: 35px;
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
}

.identity-brand-panel {
  display: grid;
  grid-template-rows: auto 1fr auto;
  background:
    radial-gradient(circle at 75% 30%, rgba(18, 190, 149, 0.12), transparent 28%),
    var(--surface);
}

.identity-icon-panel {
  display: grid;
  grid-template-rows: auto 1fr auto;
  color: #ffffff;
  background:
    radial-gradient(circle at 50% 45%, rgba(54, 225, 183, 0.15), transparent 30%),
    var(--dark);
}

.identity-brand-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.identity-brand-top span {
  color: var(--brand-dark);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.identity-icon-panel .identity-brand-top span {
  color: #72e6ca;
}

.identity-brand-top p {
  margin: 0;
  color: #7a8985;
  font-size: 12px;
  font-weight: 700;
}

.identity-icon-panel .identity-brand-top p {
  color: rgba(233, 244, 241, 0.48);
}

.identity-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 50px;
}

.identity-logo img {
  width: min(100%, 390px);
  height: auto;
}

.app-icon-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 42px;
}

.app-icon-stage img {
  width: 146px;
  border-radius: 31px;
  box-shadow: 0 28px 55px rgba(0, 0, 0, 0.35);
}

.identity-description h3 {
  margin: 0;
  font-size: 24px;
  letter-spacing: -0.025em;
}

.identity-description p {
  max-width: 610px;
  margin: 11px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.identity-icon-panel .identity-description p {
  color: rgba(228, 241, 237, 0.56);
}

.official-checks {
  display: grid;
  margin-top: 22px;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}

.official-checks > div {
  min-height: 185px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-medium);
  background: #ffffff;
}

.official-checks span {
  color: var(--brand-dark);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.official-checks strong {
  display: block;
  margin-top: 25px;
  font-size: 18px;
}

.official-checks p {
  margin: 7px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

/* Channels */

.channels-section {
  background: var(--surface);
}

.channel-grid {
  display: grid;
  gap: 26px;
}

.channel-card {
  display: grid;
  min-height: 625px;
  overflow: hidden;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.7fr);
  border: 1px solid rgba(20, 67, 59, 0.1);
  border-radius: var(--radius-large);
  background: #ffffff;
  box-shadow: var(--shadow);
}

.channel-card:nth-child(even) {
  grid-template-columns: minmax(300px, 0.7fr) minmax(0, 1fr);
}

.channel-card:nth-child(even) .channel-card-copy {
  order: 2;
}

.channel-card:nth-child(even) .channel-card-image {
  order: 1;
}

.channel-card-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 65px 75px;
}

.channel-tag {
  display: flex;
  width: 100%;
  margin-bottom: 45px;
  align-items: center;
  justify-content: space-between;
}

.channel-tag span {
  color: #82908c;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.channel-tag strong {
  color: var(--brand-dark);
  font-size: 15px;
}

.channel-card h3 {
  max-width: 580px;
  margin: 0;
  font-size: clamp(34px, 4.3vw, 53px);
  line-height: 1.07;
  letter-spacing: -0.047em;
}

.channel-card-copy > p {
  max-width: 570px;
  margin: 23px 0 0;
  color: var(--ink-soft);
  font-size: 16px;
}

.channel-card ul {
  display: grid;
  margin: 28px 0;
  padding: 0;
  gap: 12px;
  list-style: none;
}

.channel-card li {
  position: relative;
  padding-left: 26px;
  color: #394b47;
  font-size: 13px;
  font-weight: 650;
}

.channel-card li::before {
  position: absolute;
  top: 2px;
  left: 0;
  display: flex;
  width: 18px;
  height: 18px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: #ffffff;
  background: var(--brand);
  content: "✓";
  font-size: 10px;
}

.channel-card-copy > a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--brand-dark);
  font-size: 14px;
  font-weight: 800;
}

.channel-card-copy > a span {
  transition: transform var(--transition);
}

.channel-card-copy > a:hover span {
  transform: translateX(5px);
}

.channel-card-image {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 55px 45px 0;
  background:
    radial-gradient(circle at 50% 55%, rgba(22, 195, 151, 0.13), transparent 34%),
    #eef5f2;
}

.channel-ios .channel-card-image {
  background:
    radial-gradient(circle at 50% 55%, rgba(216, 75, 72, 0.1), transparent 34%),
    #f3f5f4;
}

.channel-web .channel-card-image {
  background:
    radial-gradient(circle at 50% 55%, rgba(27, 206, 163, 0.16), transparent 34%),
    var(--dark-soft);
}

.channel-card-image img {
  width: min(100%, 320px);
  max-height: 570px;
  object-fit: contain;
  object-position: center bottom;
  filter: drop-shadow(0 23px 40px rgba(9, 47, 40, 0.15));
}

/* Steps */

.steps-section {
  color: #ffffff;
  background:
    radial-gradient(circle at 80% 20%, rgba(30, 201, 158, 0.12), transparent 26%),
    var(--dark);
}

.steps-header {
  display: grid;
  margin-bottom: 55px;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.55fr);
  gap: 70px;
  align-items: end;
}

.steps-header p {
  margin: 0;
  color: rgba(227, 241, 237, 0.58);
  font-size: 16px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.step-card {
  position: relative;
  display: grid;
  min-height: 690px;
  overflow: hidden;
  grid-template-rows: auto auto 1fr;
  padding: 28px 28px 0;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-medium);
  background: rgba(255, 255, 255, 0.04);
}

.step-number {
  color: #6be3c6;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.17em;
}

.step-copy {
  padding-top: 30px;
}

.step-copy > span {
  color: rgba(231, 243, 239, 0.48);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.1em;
}

.step-copy h3 {
  margin: 8px 0 12px;
  font-size: 24px;
  line-height: 1.18;
}

.step-copy p {
  margin: 0;
  color: rgba(229, 242, 238, 0.57);
  font-size: 13px;
}

.step-image {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-top: 30px;
}

.step-image img {
  width: min(100%, 260px);
  max-height: 455px;
  object-fit: contain;
  object-position: center bottom;
  filter: drop-shadow(0 20px 35px rgba(0, 0, 0, 0.3));
}

/* Security */

.security-section {
  background: #ffffff;
}

.security-layout {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.security-copy {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 40px 70px;
  padding: 70px 70px 20px;
}

.security-copy > .section-label {
  grid-column: 1 / -1;
  margin-bottom: -20px;
}

.security-copy h2 {
  align-self: start;
}

.security-copy > p {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 16px;
}

.security-list {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}

.security-list > div {
  display: grid;
  min-height: 150px;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-medium);
  background: #ffffff;
}

.security-list > div > span {
  display: flex;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: #ffffff;
  background: var(--brand);
  font-size: 12px;
}

.security-list p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
}

.security-list strong {
  display: block;
  margin-bottom: 5px;
  color: var(--ink);
  font-size: 14px;
}

.security-button {
  grid-column: 1 / -1;
  width: fit-content;
  color: #ffffff;
  background: var(--dark);
}

.security-button:hover {
  background: var(--brand-dark);
  transform: translateY(-3px);
}

.security-visual {
  padding: 20px 30px 0;
}

.security-visual img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* Summary */

.download-summary {
  background: var(--surface);
}

.summary-header {
  max-width: 780px;
  margin-bottom: 45px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(21, 71, 62, 0.15);
  border-bottom: 1px solid rgba(21, 71, 62, 0.15);
}

.summary-grid article {
  display: grid;
  min-height: 240px;
  grid-template-columns: 42px 1fr;
  gap: 20px;
  padding: 40px 35px;
  border-right: 1px solid rgba(21, 71, 62, 0.15);
}

.summary-grid article:last-child {
  border-right: 0;
}

.summary-grid article > span {
  color: var(--brand-dark);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.summary-grid h3 {
  margin: 0;
  font-size: 20px;
}

.summary-grid p {
  margin: 11px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

/* Final */

.final-download {
  overflow: hidden;
  padding: 0;
  background: #ffffff;
}

.final-download-inner {
  display: grid;
  width: min(100%, 1440px);
  min-height: 640px;
  margin: 0 auto;
  grid-template-columns: minmax(430px, 0.85fr) minmax(560px, 1.15fr);
  align-items: center;
}

.final-download-copy {
  position: relative;
  z-index: 3;
  padding: 80px 30px 80px max(45px, calc((100vw - 1240px) / 2));
}

.final-download-copy p {
  max-width: 580px;
  margin: 23px 0 0;
  color: var(--ink-soft);
  font-size: 16px;
}

.final-actions {
  display: flex;
  margin-top: 33px;
  flex-wrap: wrap;
  gap: 13px;
}

.outline-button {
  border-color: var(--line);
  color: var(--ink);
  background: #ffffff;
}

.outline-button:hover {
  border-color: var(--brand);
  transform: translateY(-3px);
}

.final-download-image {
  width: 112%;
  margin-left: -9%;
}

.final-download-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* Footer */

.site-footer {
  padding: 75px 28px 30px;
  color: rgba(228, 241, 237, 0.64);
  background: #04100f;
}

.footer-main {
  display: grid;
  padding-bottom: 55px;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 90px;
  border-bottom: 1px solid var(--line-dark);
}

.footer-brand img {
  width: 188px;
}

.footer-brand p {
  max-width: 430px;
  margin: 20px 0 0;
  font-size: 13px;
}

.footer-navigation {
  display: grid;
  grid-template-columns: repeat(2, minmax(145px, 1fr));
  gap: 65px;
}

.footer-navigation > div {
  display: grid;
  align-content: start;
  gap: 11px;
}

.footer-navigation strong {
  margin-bottom: 8px;
  color: #ffffff;
  font-size: 13px;
}

.footer-navigation a {
  font-size: 13px;
  transition: color var(--transition);
}

.footer-navigation a:hover {
  color: #72e8cb;
}

.footer-bottom {
  display: flex;
  padding-top: 26px;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
  font-size: 11px;
}

.footer-bottom p {
  max-width: 770px;
  margin: 0;
}

.footer-bottom > span {
  white-space: nowrap;
}

/* Back to top */

.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 900;
  display: flex;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  color: #ffffff;
  background: rgba(6, 26, 23, 0.92);
  box-shadow: 0 13px 30px rgba(0, 0, 0, 0.16);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition:
    opacity var(--transition),
    transform var(--transition),
    background var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--brand-dark);
}

/* Reveal */

.reveal-enabled [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 700ms ease,
    transform 700ms ease;
}

.reveal-enabled [data-reveal].visible {
  opacity: 1;
  transform: translateY(0);
}

/* Tablet */

@media (max-width: 1100px) {
  .desktop-nav {
    display: none;
  }

  .nav-download {
    margin-left: auto;
  }

  .hero {
    min-height: auto;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .hero-content {
    max-width: 820px;
  }

  .hero-image {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
  }

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

  .identity-icon-panel {
    min-height: 410px;
  }

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

  .step-card {
    min-height: 500px;
    grid-template-columns: minmax(0, 1fr) 280px;
    grid-template-rows: auto 1fr;
  }

  .step-number {
    grid-column: 1;
  }

  .step-copy {
    grid-column: 1;
  }

  .step-image {
    grid-row: 1 / 3;
    grid-column: 2;
  }

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

  .final-download-copy {
    padding-right: 28px;
    padding-left: 28px;
  }

  .final-download-image {
    width: 100%;
    margin-left: 0;
  }
}

@media (max-width: 900px) {
  .section {
    padding: 84px 22px;
  }

  .section-intro,
  .steps-header {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .section-intro p {
    justify-self: start;
  }

  .official-checks {
    grid-template-columns: 1fr;
  }

  .channel-card,
  .channel-card:nth-child(even) {
    grid-template-columns: 1fr;
  }

  .channel-card:nth-child(even) .channel-card-copy,
  .channel-card:nth-child(even) .channel-card-image {
    order: initial;
  }

  .channel-card-copy {
    padding: 55px 45px 20px;
  }

  .channel-card-image {
    min-height: 490px;
  }

  .security-copy {
    grid-template-columns: 1fr;
    padding: 55px 45px 20px;
  }

  .security-copy > .section-label,
  .security-list,
  .security-button {
    grid-column: auto;
  }

  .security-list {
    grid-template-columns: 1fr;
  }

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

  .summary-grid article {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid rgba(21, 71, 62, 0.15);
  }

  .summary-grid article:last-child {
    border-bottom: 0;
  }
}

/* Mobile */

@media (max-width: 720px) {
  .header-inner {
    min-height: 70px;
    padding: 0 18px;
  }

  .site-logo {
    width: 145px;
  }

  .nav-download {
    display: none;
  }

  .menu-button {
    display: block;
  }

  .mobile-navigation {
    position: fixed;
    top: 70px;
    right: 0;
    left: 0;
    display: grid;
    max-height: 0;
    overflow: hidden;
    padding: 0 20px;
    border-bottom: 1px solid transparent;
    background: rgba(5, 20, 16, 0.98);
    opacity: 0;
    pointer-events: none;
    transition:
      max-height 320ms ease,
      opacity 220ms ease,
      padding 320ms ease;
  }

  .mobile-navigation.open {
    max-height: 440px;
    padding-top: 14px;
    padding-bottom: 24px;
    border-color: rgba(255, 255, 255, 0.08);
    opacity: 1;
    pointer-events: auto;
    box-shadow: 0 20px 35px rgba(10, 48, 41, 0.09);
  }

  .mobile-navigation a {
    padding: 14px 2px;
    border-bottom: 1px solid var(--line);
    color: rgba(231, 244, 239, 0.78);
    font-size: 14px;
  }

  .mobile-download {
    margin-top: 14px;
    border: 0 !important;
    border-radius: 999px;
    color: #ffffff !important;
    background: var(--dark);
    text-align: center;
    font-weight: 800;
  }

  .hero {
    padding: 108px 18px 55px;
  }

  .hero-decoration {
    display: none;
  }

  .hero h1 {
    font-size: clamp(47px, 14vw, 64px);
  }

  .hero h1 span {
    font-size: 0.42em;
  }

  .hero-content > p {
    font-size: 15px;
  }

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

  .primary-button,
  .secondary-button,
  .outline-button {
    width: 100%;
  }

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

  .hero-details > div {
    padding: 15px 0;
    border-bottom: 1px solid rgba(18, 72, 62, 0.1);
  }

  .hero-image {
    width: 114%;
    margin-left: -7%;
  }

  .section {
    padding: 70px 18px;
  }

  .section-intro {
    margin-bottom: 35px;
  }

  .section-intro h2,
  .steps-header h2,
  .security-copy h2,
  .summary-header h2,
  .final-download-copy h2 {
    font-size: clamp(32px, 10vw, 44px);
  }

  .identity-brand-panel,
  .identity-icon-panel {
    min-height: 370px;
    padding: 25px;
    border-radius: 22px;
  }

  .identity-logo {
    padding: 35px 15px;
  }

  .identity-logo img {
    width: min(100%, 290px);
  }

  .app-icon-stage img {
    width: 118px;
  }

  .official-checks > div {
    min-height: auto;
    padding: 24px;
  }

  .channel-card {
    min-height: auto;
    border-radius: 22px;
  }

  .channel-card-copy {
    padding: 37px 24px 12px;
  }

  .channel-tag {
    margin-bottom: 30px;
  }

  .channel-card h3 {
    font-size: 34px;
  }

  .channel-card-image {
    min-height: 405px;
    padding: 30px 20px 0;
  }

  .channel-card-image img {
    width: min(100%, 255px);
    max-height: 390px;
  }

  .step-card {
    min-height: 650px;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr;
    padding: 24px 22px 0;
    border-radius: 20px;
  }

  .step-number,
  .step-copy,
  .step-image {
    grid-row: auto;
    grid-column: auto;
  }

  .step-image img {
    width: min(100%, 235px);
    max-height: 400px;
  }

  .security-layout {
    border-radius: 22px;
  }

  .security-copy {
    padding: 40px 24px 15px;
  }

  .security-list > div {
    min-height: auto;
    padding: 20px;
  }

  .security-button {
    width: 100%;
  }

  .security-visual {
    padding: 15px 10px 0;
  }

  .summary-grid article {
    grid-template-columns: 36px 1fr;
    padding: 30px 15px;
  }

  .final-download-copy {
    padding: 70px 18px 20px;
  }

  .final-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .final-download-image {
    width: 112%;
    margin-left: -6%;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 45px;
  }

  .footer-navigation {
    gap: 35px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 18px;
  }

  .footer-bottom > span {
    white-space: normal;
  }

  .back-to-top {
    right: 16px;
    bottom: 16px;
  }
}

@media (max-width: 420px) {
  .hero h1 {
    font-size: 44px;
  }

  .hero-label {
    font-size: 10px;
  }

  .footer-navigation {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal-enabled [data-reveal] {
    opacity: 1;
    transform: none;
  }
}