:root {
  --bg: #090a0c;
  --surface: #14171d;
  --surface-2: #191d24;
  --line: #3a404a;
  --text: #f6f8fb;
  --muted: #aab2be;
  --blue: #2ea8ff;
  --blue-light: #9bdcff;
  --radius-lg: 38px;
  --radius-md: 24px;
  --shadow-blue: 0 0 80px rgba(28, 159, 255, .13);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 25% 10%, rgba(23, 150, 179, .09), transparent 23%),
    radial-gradient(circle at 72% 8%, rgba(95, 32, 92, .09), transparent 21%),
    var(--bg);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; }

.skip-link {
  position: fixed;
  z-index: 1000;
  left: 16px;
  top: -60px;
  padding: 10px 16px;
  color: #000;
  background: #fff;
  border-radius: 8px;
}
.skip-link:focus { top: 16px; }

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.section-shell {
  width: min(1480px, calc(100% - 56px));
  margin-inline: auto;
}

.site-header {
  position: absolute;
  z-index: 50;
  inset: 0 0 auto;
  height: 104px;
}
.header-inner {
  width: min(1480px, calc(100% - 56px));
  height: 100%;
  margin: auto;
  display: flex;
  align-items: center;
  gap: 54px;
}
.brand img { width: 74px; }
.primary-nav { display: flex; align-items: center; gap: 42px; font-weight: 700; }
.primary-nav a, .language { color: #e9edf2; transition: color .2s ease; }
.primary-nav a:hover, .language:hover { color: var(--blue); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.language {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 12px 16px;
  border: 1px solid #424751;
  border-radius: 10px;
  font-weight: 650;
}
.language svg { width: 22px; fill: none; stroke: currentColor; stroke-width: 1.7; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 10px;
  font-weight: 800;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button-light { color: #07090b; background: #fff; }
.button-primary {
  min-width: 168px;
  color: #06121c;
  background: linear-gradient(135deg, #8dd8ff, #2da9ff);
  box-shadow: 0 14px 40px rgba(45, 169, 255, .24);
}
.nav-toggle { display: none; }

.hero {
  position: relative;
  min-height: 850px;
  padding: 150px 0 70px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(13, 18, 24, .72), rgba(8, 9, 11, .2));
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, #27323d, transparent);
}
.ambient {
  position: absolute;
  width: 480px;
  height: 480px;
  filter: blur(110px);
  opacity: .16;
  border-radius: 50%;
  pointer-events: none;
}
.ambient-one { left: -120px; top: -80px; background: #0fd9e0; }
.ambient-two { right: 12%; top: -190px; background: #97319b; }
.hero-inner {
  position: relative;
  z-index: 2;
  width: min(1480px, calc(100% - 56px));
  margin: auto;
  display: grid;
  grid-template-columns: 54% 46%;
  align-items: center;
}
.hero-copy { padding: 28px 0 0 5%; }
.kicker, .section-label {
  margin: 0 0 18px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.hero h1 {
  margin: 0;
  font-size: clamp(54px, 5.1vw, 86px);
  line-height: 1.15;
  letter-spacing: -.045em;
}
.hero h1 span, h2 span, h3 span { color: var(--blue); }
.hero-description { max-width: 650px; margin: 26px 0 0; color: #d0d6de; font-size: 19px; }
.hero-cta { display: flex; align-items: center; gap: 28px; margin-top: 34px; }
.text-link { color: #e7edf4; font-weight: 700; }
.text-link span { display: inline-block; margin-left: 6px; color: var(--blue); transition: transform .2s ease; }
.text-link:hover span { transform: translateX(4px); }
.trust-row { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 30px; color: var(--muted); font-size: 14px; }
.trust-row i {
  display: inline-grid;
  width: 20px;
  height: 20px;
  margin-right: 6px;
  place-items: center;
  color: #07141d;
  background: var(--blue);
  border-radius: 50%;
  font-style: normal;
  font-weight: 900;
}

.hero-visual { position: relative; height: 630px; }
.phone {
  position: absolute;
  padding: 12px;
  background: linear-gradient(145deg, #484d55, #101215 45%, #30343a);
  border: 2px solid #5d626a;
  border-radius: 58px;
  box-shadow: 0 34px 90px rgba(0, 0, 0, .52);
}
.phone::before {
  content: "";
  position: absolute;
  inset: 5px;
  z-index: 4;
  border: 1px solid rgba(255,255,255,.17);
  border-radius: 49px;
  pointer-events: none;
}
.phone-speaker {
  position: absolute;
  z-index: 8;
  left: 50%;
  top: 16px;
  width: 100px;
  height: 25px;
  transform: translateX(-50%);
  background: #040507;
  border-radius: 18px;
}
.phone-screen {
  position: relative;
  height: 100%;
  overflow: hidden;
  color: #12161c;
  background: #f6f7f9;
  border-radius: 46px;
}
.app-dark {
  color: #f8f9fb;
  background: #17181f;
}
.phone-hero {
  left: 50%;
  top: 55%;
  width: 378px;
  height: 730px;
  transform: translate(-50%, -50%) rotate(-8deg);
}
.phone-hero .phone-screen { padding: 34px 18px 0; }
.status-row { display: flex; justify-content: space-between; font-size: 12px; font-weight: 800; opacity: .92; }
.status-row.light { color: #12161c; }
.app-account { display: flex; align-items: center; gap: 9px; margin-top: 14px; font-size: 13px; font-weight: 700; }
.mini-logo { display: grid; width: 30px; height: 30px; place-items: center; color: #08090b; background: #fff; border-radius: 50%; font-size: 9px; font-weight: 950; }
.bell { margin-left: auto; }
.app-dark .eyebrow { margin: 24px 0 4px; color: #d3d6db; font-size: 12px; }
.balance { margin: 0; font-size: 28px; font-weight: 850; letter-spacing: .02em; }
.app-buttons, .app-shortcuts { display: grid; gap: 10px; margin-top: 14px; }
.app-buttons { grid-template-columns: 1fr 1fr; }
.app-shortcuts { grid-template-columns: repeat(3, 1fr); }
.app-buttons span, .app-shortcuts span { display: grid; min-height: 39px; place-items: center; background: #282a32; border-radius: 19px; font-size: 12px; }
.app-panel {
  min-height: 395px;
  margin: 18px -18px 0;
  padding: 16px 18px;
  color: #181c22;
  background: #f7f8fa;
  border-radius: 18px 18px 0 0;
}
.app-banner {
  display: flex;
  min-height: 94px;
  padding: 16px;
  flex-direction: column;
  justify-content: center;
  color: #0b5795;
  background:
    radial-gradient(circle at 82% 50%, rgba(46,168,255,.35) 0 11%, transparent 12%),
    radial-gradient(circle at 82% 50%, rgba(46,168,255,.16) 0 24%, transparent 25%),
    linear-gradient(135deg, #dceeff, #f1f7ff);
  border-radius: 12px;
}
.app-banner small { font-size: 9px; }
.app-banner strong { font-size: 21px; }
.app-banner span { font-size: 10px; }
.app-panel h3 { margin: 14px 0 8px; font-size: 15px; }
.asset-row {
  display: grid;
  grid-template-columns: 34px 1fr 74px;
  align-items: center;
  gap: 8px;
  min-height: 68px;
  padding: 8px 10px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(20, 45, 67, .05);
}
.asset-row + .asset-row { margin-top: 7px; }
.asset-symbol { display: grid; width: 27px; height: 27px; place-items: center; border-radius: 50%; font-weight: 950; }
.x-symbol { color: #fff; background: #0a0b0d; }
.t-symbol { color: #fff; background: #25b893; }
.asset-row b, .asset-row small { display: block; }
.asset-row b { font-size: 12px; }
.asset-row small { margin-top: 4px; color: #8b929c; font-size: 9px; }
.asset-chart {
  width: 70px;
  height: 34px;
  background: linear-gradient(180deg, rgba(46,168,255,.28), transparent);
  clip-path: polygon(0 54%, 15% 44%, 25% 49%, 37% 28%, 49% 41%, 64% 18%, 75% 40%, 87% 27%, 100% 34%, 100% 100%, 0 100%);
}
.asset-value { color: #606872; font-size: 11px; text-align: right; }
.coin {
  position: absolute;
  z-index: 6;
  display: grid;
  aspect-ratio: 1;
  place-items: center;
  border: 12px double rgba(0, 0, 0, .34);
  border-radius: 50%;
  font-weight: 950;
  box-shadow: inset 0 0 18px rgba(255,255,255,.38), 0 25px 50px rgba(0,0,0,.4);
}
.coin-x { left: 6%; top: 8%; width: 140px; color: #fff; background: #17191d; font-size: 64px; transform: rotate(-9deg); }
.coin-b { right: 4%; top: 44%; width: 116px; color: #fff4cf; background: #f4a900; font-size: 52px; transform: rotate(9deg); }
.coin-t { left: 16%; bottom: 0; width: 116px; color: #fff; background: #4fc84b; font-size: 50px; transform: rotate(-16deg); }

.feature-slider { padding-top: 88px; }
.slider-card {
  position: relative;
  min-height: 560px;
  padding: 90px 128px 70px;
  overflow: hidden;
  background: linear-gradient(135deg, #171b22, #15171c);
  border: 1px solid #424852;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-blue);
}
.slides { min-height: 365px; }
.slide {
  display: grid;
  min-height: 365px;
  grid-template-columns: 1.3fr .7fr;
  align-items: center;
  gap: 60px;
  animation: fade-in .45s ease;
}
.slide[hidden] { display: none; }
@keyframes fade-in { from { opacity: 0; transform: translateY(10px); } }
.slide h3 { margin: 0; font-size: clamp(42px, 4.3vw, 68px); line-height: 1.28; letter-spacing: -.035em; }
.slide p { max-width: 770px; margin-top: 18px; color: #e2e6eb; font-size: 18px; }
.feature-art { width: min(100%, 360px); justify-self: center; filter: drop-shadow(0 20px 45px rgba(46,168,255,.18)); }
.slider-arrow {
  position: absolute;
  top: 50%;
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  padding: 0;
  transform: translateY(-50%);
  color: #dce5ec;
  background: #1c2530;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  font-size: 32px;
  line-height: 1;
}
.slider-arrow:hover { background: #26384a; }
.slider-arrow.prev { left: 20px; }
.slider-arrow.next { right: 20px; }
.slider-dots { position: absolute; left: 50%; bottom: 25px; display: flex; gap: 10px; transform: translateX(-50%); }
.slider-dots button {
  width: 10px;
  height: 10px;
  padding: 0;
  background: #343a43;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
}
.slider-dots button.is-active { background: #e4ebf0; }

.merchant-section {
  display: grid;
  min-height: 760px;
  padding-top: 100px;
  grid-template-columns: 54% 46%;
  align-items: center;
}
.merchant-phones { position: relative; height: 660px; }
.phone-mini { top: 50%; width: 288px; height: 586px; border-radius: 42px; }
.phone-mini .phone-screen { border-radius: 34px; padding: 27px 13px 0; }
.phone-mini::before { border-radius: 35px; }
.phone-mini .phone-speaker { top: 13px; width: 78px; height: 18px; }
.mini-dark { left: 12%; transform: translateY(-50%) rotate(-3deg); }
.mini-light { right: 8%; transform: translateY(-43%) rotate(2deg); z-index: 2; }
.phone-mini .eyebrow { margin-top: 28px; }
.mini-balance { margin: 0 0 12px; text-align: right; font-size: 21px; font-weight: 850; }
.mini-assets { margin: 14px -13px 0; padding: 16px 13px; color: #15191e; background: #f5f6f8; }
.mini-assets b { display: flex; justify-content: space-between; padding: 18px 12px; background: #fff; border-radius: 10px; font-size: 11px; }
.mini-assets b + b { margin-top: 8px; }
.mini-assets em { font-style: normal; }
.mini-light h3 { margin: 26px 0 12px; text-align: center; font-size: 14px; }
.purchase-coin { display: flex; align-items: center; gap: 8px; padding: 12px 4px; border-top: 1px solid #e2e5e9; border-bottom: 1px solid #e2e5e9; font-size: 12px; }
.mini-light label { display: block; margin-top: 20px; color: #69717c; font-size: 10px; }
.purchase-number { display: flex; justify-content: space-between; margin-top: 8px; color: #111419; font-size: 27px; }
.purchase-number small { font-size: 10px; font-weight: 500; }
.bank-pill { display: inline-block; margin-top: 10px; padding: 6px 12px; color: #3974b2; background: #cde4ff; border-radius: 20px; font-size: 10px; }
.buy-bar { position: absolute; left: 13px; right: 13px; bottom: 16px; display: grid; min-height: 38px; place-items: center; color: #fff; background: #07080a; border-radius: 20px; font-size: 11px; }
.merchant-copy { padding-left: 7%; }
.merchant-copy h2 { margin: 0; font-size: clamp(48px, 4.6vw, 78px); line-height: 1.2; }
.merchant-copy > p:not(.section-label):not(.merchant-tagline) { max-width: 640px; color: #d5dbe2; font-size: 18px; }
.merchant-tagline { margin: 4px 0 28px; font-size: 20px; }
.stats-card {
  display: grid;
  max-width: 620px;
  margin: 34px 0 0;
  padding: 28px 36px;
  grid-template-columns: 1fr 1fr;
  gap: 24px 42px;
  background: #171a20;
  border: 1px solid #444a53;
  border-radius: 20px;
}
.stats-card .stat-volume { position: relative; grid-column: 1 / -1; }
.stats-card dt { font-size: 15px; }
.stats-card dd { margin: 0; font-size: 30px; font-weight: 900; line-height: 1.25; }
.stats-card small { font-size: .55em; }
.sparkline { position: absolute; right: 0; bottom: 5px; width: 46%; height: 56px; overflow: hidden; }
.sparkline i { display: block; width: 100%; height: 100%; background: var(--blue); clip-path: polygon(0 60%, 9% 40%, 16% 35%, 29% 65%, 41% 50%, 53% 81%, 61% 0, 70% 38%, 82% 24%, 90% 80%, 100% 54%, 100% 100%, 0 100%); }

.benefits { padding-top: 95px; padding-bottom: 120px; }
.section-heading { text-align: center; }
.section-heading h2 { margin: 0; font-size: clamp(38px, 3.7vw, 60px); line-height: 1.25; }
.section-heading > p:last-child { color: var(--muted); }
.benefit-grid {
  display: grid;
  margin-top: 48px;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.benefit-grid article {
  min-height: 330px;
  padding: 62px 48px;
  background: #171a20;
  border: 1px solid #41464f;
  border-radius: 20px;
  transition: transform .25s ease, border-color .25s ease;
}
.benefit-grid article:hover { transform: translateY(-6px); border-color: #2c8ecc; }
.line-icon { color: var(--blue); font-size: 44px; line-height: 1; }
.benefit-grid h3 { margin: 26px 0 12px; font-size: 25px; line-height: 1.35; }
.benefit-grid p { margin: 0; color: #d1d7df; }

.guide-section {
  position: relative;
  padding: 105px 0 120px;
  overflow: hidden;
  border-block: 1px solid #232831;
  background: #0b0d10;
}
.guide-glow { position: absolute; inset: 0; background: radial-gradient(circle at 50% 0, rgba(37,158,228,.18), transparent 36%); pointer-events: none; }
.guide-section > *:not(.guide-glow) { position: relative; z-index: 2; }
.steps {
  display: grid;
  margin-top: 54px;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  counter-reset: steps;
}
.steps li { position: relative; min-height: 220px; padding: 38px; list-style: none; background: linear-gradient(145deg, #171b22, #111419); border: 1px solid #353b44; border-radius: 20px; }
.steps li:not(:last-child)::after { content: "→"; position: absolute; z-index: 4; right: -24px; top: 50%; display: grid; width: 46px; height: 46px; place-items: center; transform: translateY(-50%); color: #09141d; background: var(--blue); border: 6px solid var(--bg); border-radius: 50%; font-size: 20px; font-weight: 900; }
.steps span { color: var(--blue); font-weight: 900; letter-spacing: .12em; }
.steps h3 { margin: 18px 0 8px; font-size: 24px; }
.steps p { margin: 0; color: var(--muted); }

.download-section {
  display: grid;
  min-height: 830px;
  padding-top: 110px;
  grid-template-columns: 45% 55%;
  align-items: center;
}
.download-copy { padding-left: 4%; }
.download-copy h2 { margin: 0; font-size: clamp(48px, 5vw, 78px); line-height: 1.18; }
.download-copy > p:not(.section-label):not(.download-note) { max-width: 570px; color: #d0d6dd; font-size: 19px; }
.store-buttons { display: flex; gap: 14px; margin-top: 34px; }
.store-button {
  display: flex;
  min-width: 190px;
  min-height: 64px;
  padding: 10px 20px;
  align-items: center;
  gap: 12px;
  color: #101318;
  background: #fff;
  border-radius: 12px;
  font-weight: 850;
  transition: transform .2s ease;
}
.store-button:hover { transform: translateY(-3px); }
.store-button svg { width: 28px; fill: currentColor; }
.store-button small { display: block; font-size: 10px; font-weight: 500; }
.download-note { color: #7d8792; font-size: 13px; }
.app-showcase { position: relative; height: 720px; }
.app-showcase::before { content: ""; position: absolute; inset: 15% 4% 10%; background: radial-gradient(circle, rgba(43,163,239,.18), rgba(90,30,96,.09) 50%, transparent 70%); filter: blur(40px); }
.showcase-phone { left: 50%; top: 50%; width: 390px; height: 730px; transform: translate(-50%, -46%); }
.showcase-phone .phone-screen { padding: 36px 18px 0; }
.showcase-panel { min-height: 450px; }
.notice { padding: 9px 10px; margin-bottom: 10px; color: #4a535f; background: #eef1f4; border-radius: 10px; font-size: 9px; }

.security-section {
  display: grid;
  padding-top: 90px;
  padding-bottom: 110px;
  grid-template-columns: 36% 1fr;
  gap: 7%;
}
.security-intro { position: sticky; top: 80px; align-self: start; padding-top: 100px; }
.security-intro h2 { margin: 0; font-size: clamp(46px, 4.4vw, 72px); line-height: 1.12; }
.security-intro p:last-child { max-width: 480px; color: #d1d7df; font-size: 17px; }
.security-list { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.security-list article { display: flex; min-height: 225px; padding: 34px; gap: 16px; background: #171a20; border: 1px solid #41464f; border-radius: 20px; }
.security-list article:last-child { grid-column: 1 / -1; min-height: auto; }
.security-list article > span { display: grid; width: 36px; height: 36px; flex: 0 0 auto; place-items: center; color: #090b0d; background: #fff; border-radius: 50%; font-weight: 900; }
.security-list h3 { margin: -3px 0 12px; font-size: 24px; }
.security-list p { margin: 0; color: #d0d5dc; }

.faq-section { padding-top: 80px; padding-bottom: 120px; }
.faq-list { max-width: 980px; margin: 46px auto 0; border-top: 1px solid #353a43; }
.faq-list details { border-bottom: 1px solid #353a43; }
.faq-list summary { position: relative; padding: 26px 56px 26px 10px; list-style: none; cursor: pointer; font-size: 20px; font-weight: 800; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 12px; top: 50%; color: var(--blue); transform: translateY(-50%); font-size: 32px; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin: -6px 0 26px; padding: 0 60px 0 10px; color: var(--muted); }

.site-footer { border-top: 1px solid #363a42; background: radial-gradient(circle at 40% 0, rgba(33,135,171,.13), transparent 40%), #151619; }
.footer-inner { padding-top: 70px; padding-bottom: 36px; }
.footer-brand p { color: var(--muted); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 36px; padding: 26px 0; border-bottom: 1px solid #3b3e44; }
.site-footer nav a:hover { color: var(--blue); }
.copyright { margin: 24px 0 0; color: #d5dae0; font-size: 14px; }

.contact-tools { position: fixed; z-index: 45; right: 34px; top: 50%; display: grid; gap: 14px; transform: translateY(-50%); }
.contact-tools a { display: grid; width: 56px; height: 56px; place-items: center; color: #fff; background: #079df8; border-radius: 50%; box-shadow: 0 12px 34px rgba(0,0,0,.25); }
.contact-tools a.pale { color: #079df8; background: #eef8ff; }
.contact-tools svg { width: 28px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.toast { position: fixed; z-index: 100; left: 50%; bottom: 32px; max-width: calc(100% - 40px); padding: 13px 18px; transform: translateX(-50%); color: #091019; background: #f4f8fb; border-radius: 10px; box-shadow: 0 16px 40px rgba(0,0,0,.4); font-size: 14px; }

@media (max-width: 1180px) {
  .primary-nav { gap: 23px; }
  .hero { min-height: 760px; }
  .hero-inner { grid-template-columns: 52% 48%; }
  .hero-visual { height: 560px; transform: scale(.88); }
  .slider-card { padding-inline: 92px; }
  .merchant-section { grid-template-columns: 48% 52%; }
  .merchant-phones { transform: scale(.82); transform-origin: center; }
  .benefit-grid article { padding: 48px 32px; }
}

@media (max-width: 920px) {
  .section-shell, .header-inner, .hero-inner { width: min(100% - 36px, 720px); }
  .site-header { height: 82px; }
  .header-inner { gap: 0; }
  .brand img { width: 60px; }
  .nav-toggle {
    display: grid;
    width: 44px;
    height: 44px;
    margin-left: auto;
    padding: 10px;
    place-content: center;
    gap: 5px;
    background: #16191e;
    border: 1px solid #39404a;
    border-radius: 9px;
  }
  .nav-toggle span { display: block; width: 21px; height: 2px; background: #fff; }
  .primary-nav {
    position: absolute;
    left: 18px;
    right: 18px;
    top: 72px;
    display: none;
    padding: 12px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(17,20,25,.98);
    border: 1px solid #39404a;
    border-radius: 14px;
    box-shadow: 0 20px 60px rgba(0,0,0,.5);
  }
  .primary-nav.is-open { display: flex; }
  .primary-nav a { padding: 13px 16px; }
  .header-actions { display: none; }
  .hero { min-height: auto; padding-top: 122px; padding-bottom: 80px; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-copy { grid-row: 1; padding: 0; text-align: center; }
  .hero-description { margin-inline: auto; }
  .hero-cta, .trust-row { justify-content: center; }
  .hero-visual { height: 560px; margin-top: 20px; transform: scale(.9); }
  .slider-card { min-height: 640px; padding: 70px 64px; }
  .slide { min-height: 470px; grid-template-columns: 1fr; gap: 28px; text-align: center; }
  .slide p { margin-inline: auto; }
  .feature-art { width: 250px; }
  .merchant-section { grid-template-columns: 1fr; padding-top: 70px; }
  .merchant-copy { grid-row: 1; padding: 0; text-align: center; }
  .merchant-copy > p, .stats-card { margin-inline: auto !important; }
  .merchant-phones { height: 620px; }
  .benefit-grid { grid-template-columns: 1fr; }
  .benefit-grid article { min-height: auto; }
  .steps { grid-template-columns: 1fr; }
  .steps li:not(:last-child)::after { content: "↓"; left: 50%; right: auto; top: auto; bottom: -34px; transform: translateX(-50%); }
  .download-section { grid-template-columns: 1fr; text-align: center; padding-top: 80px; }
  .download-copy { padding: 0; }
  .download-copy > p { margin-inline: auto; }
  .store-buttons { justify-content: center; }
  .app-showcase { height: 690px; }
  .security-section { grid-template-columns: 1fr; gap: 40px; }
  .security-intro { position: static; padding-top: 0; text-align: center; }
  .security-intro p:last-child { margin-inline: auto; }
  .contact-tools { right: 16px; }
}

@media (max-width: 620px) {
  body { font-size: 15px; }
  .section-shell, .header-inner, .hero-inner { width: calc(100% - 30px); }
  .hero h1 { font-size: 45px; }
  .hero-description { font-size: 16px; }
  .hero-cta { flex-direction: column; gap: 18px; }
  .trust-row { gap: 10px 15px; }
  .hero-visual { height: 485px; margin-top: 90px; transform: scale(.74); transform-origin: top center; }
  .coin-x { left: -12%; }
  .coin-b { right: -12%; }
  .feature-slider { padding-top: 55px; }
  .slider-card { min-height: 600px; padding: 60px 35px 70px; border-radius: 24px; }
  .slide { min-height: 450px; }
  .slide h3 { font-size: 37px; }
  .slide p { font-size: 15px; }
  .slider-arrow { top: auto; bottom: 16px; width: 40px; height: 40px; transform: none; }
  .slider-arrow.prev { left: 18px; }
  .slider-arrow.next { right: 18px; }
  .slider-dots { bottom: 31px; }
  .merchant-section { overflow: hidden; }
  .merchant-copy h2 { font-size: 47px; }
  .stats-card { padding: 22px; gap: 18px; text-align: left; }
  .stats-card dd { font-size: 25px; }
  .sparkline { display: none; }
  .merchant-phones { width: 580px; height: 530px; left: 50%; transform: translateX(-50%) scale(.72); transform-origin: top center; }
  .benefits { padding-top: 55px; padding-bottom: 78px; }
  .benefit-grid { margin-top: 32px; }
  .benefit-grid article { padding: 38px 28px; }
  .guide-section { padding-block: 75px; }
  .steps { margin-top: 38px; }
  .download-copy h2 { font-size: 45px; }
  .store-buttons { flex-direction: column; align-items: center; }
  .store-button { width: 230px; }
  .app-showcase { height: 590px; transform: scale(.78); transform-origin: top center; }
  .security-section { padding-top: 60px; }
  .security-list { grid-template-columns: 1fr; }
  .security-list article:last-child { grid-column: auto; }
  .security-list article { min-height: auto; padding: 26px 23px; }
  .faq-section { padding-top: 50px; padding-bottom: 80px; }
  .faq-list summary { font-size: 17px; }
  .contact-tools { top: auto; bottom: 18px; display: flex; transform: none; }
  .contact-tools a { width: 48px; height: 48px; }
  .site-footer nav { gap: 16px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}