:root {
  --ink: #172026;
  --muted: #5b6670;
  --line: #d9e2e7;
  --panel: #ffffff;
  --paper: #f7f9fb;
  --green: #0d7a55;
  --green-dark: #075b40;
  --blue: #1d5f99;
  --amber: #c77600;
  --red: #b42318;
  --shadow: 0 22px 60px rgba(23, 32, 38, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

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

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 54px);
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  white-space: nowrap;
}

.brand img {
  border-radius: 8px;
  box-shadow: 0 8px 18px rgba(13, 122, 85, 0.24);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 24px);
  color: var(--muted);
  font-size: 0.95rem;
}

.main-nav a {
  text-decoration: none;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--green-dark);
}

.section-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.76fr);
  align-items: center;
  gap: clamp(34px, 6vw, 76px);
  min-height: calc(100vh - 72px);
  padding: 54px 0 68px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--green);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  max-width: 720px;
  font-size: clamp(3rem, 8vw, 5.8rem);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  max-width: 780px;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  line-height: 1.25;
}

.hero-lede {
  max-width: 650px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 12px 18px;
  cursor: pointer;
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--green);
  color: #ffffff;
  box-shadow: 0 14px 28px rgba(13, 122, 85, 0.24);
}

.button.primary:hover,
.button.primary:focus-visible {
  background: var(--green-dark);
}

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

.button.secondary:hover,
.button.secondary:focus-visible {
  border-color: var(--blue);
  box-shadow: 0 12px 24px rgba(29, 95, 153, 0.13);
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.trust-row span {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #ffffff;
  color: var(--muted);
  padding: 8px 12px;
  font-size: 0.92rem;
  white-space: nowrap;
}

.phone-stage {
  display: flex;
  justify-content: center;
  min-height: 530px;
  padding: 28px;
  background:
    radial-gradient(circle at 18% 26%, rgba(29, 95, 153, 0.18), transparent 28%),
    radial-gradient(circle at 82% 72%, rgba(199, 118, 0, 0.18), transparent 25%),
    #e9f1f4;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.phone {
  width: min(315px, 100%);
  min-height: 590px;
  padding: 14px;
  border-radius: 32px;
  background: #101820;
  box-shadow: var(--shadow);
}

.phone-top {
  width: 96px;
  height: 8px;
  margin: 4px auto 12px;
  border-radius: 999px;
  background: #2b3742;
}

.app-preview {
  min-height: 530px;
  border-radius: 24px;
  padding: 18px;
  background: #f9fbfc;
  overflow: hidden;
}

.preview-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.preview-header img {
  border-radius: 8px;
}

.preview-header strong,
.preview-header span {
  display: block;
}

.preview-header span,
.balance-panel span,
.preview-grid span {
  color: var(--muted);
  font-size: 0.82rem;
}

.balance-panel {
  padding: 18px;
  border-radius: 8px;
  background: var(--green);
  color: #ffffff;
}

.balance-panel span {
  color: rgba(255, 255, 255, 0.8);
}

.balance-panel strong {
  display: block;
  margin-top: 6px;
  font-size: 1.65rem;
  line-height: 1;
}

.preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

.preview-grid div,
.mini-list p {
  border: 1px solid #e2e9ed;
  border-radius: 8px;
  background: #ffffff;
}

.preview-grid div {
  padding: 14px;
}

.preview-grid strong {
  display: block;
  margin-top: 8px;
  font-size: 1.55rem;
}

.mini-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.mini-list p {
  display: grid;
  grid-template-columns: 12px 1fr auto;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 12px;
  font-size: 0.92rem;
}

.mini-list span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--amber);
}

.mini-list strong {
  color: var(--green-dark);
  font-size: 0.86rem;
}

.split-section,
.steps-section,
.faq-section {
  padding: 78px 0;
}

.split-section {
  display: grid;
  grid-template-columns: 0.78fr 1fr;
  gap: clamp(28px, 6vw, 70px);
  align-items: start;
}

.split-section p,
.download-section p,
.site-footer p {
  color: var(--muted);
}

.assurance-list,
.feature-grid,
.faq-grid {
  display: grid;
  gap: 14px;
}

.assurance-list {
  grid-template-columns: repeat(3, 1fr);
}

.assurance-list article,
.feature-grid article,
.faq-grid article,
.download-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.assurance-list article {
  padding: 20px;
}

.assurance-list span[aria-hidden="true"] {
  display: inline-block;
  width: 34px;
  height: 34px;
  margin-bottom: 16px;
  border-radius: 8px;
  background: var(--green);
}

.assurance-list .icon-cloud {
  background: var(--blue);
}

.assurance-list .icon-lock {
  background: var(--amber);
}

.assurance-list p,
.feature-grid p,
.faq-grid p {
  margin: 0;
  color: var(--muted);
}

.feature-band {
  padding: 78px 0;
  background: #ffffff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.feature-grid {
  grid-template-columns: repeat(3, 1fr);
  margin-top: 28px;
}

.feature-grid article,
.faq-grid article {
  padding: 22px;
}

.section-heading {
  display: grid;
  gap: 8px;
  margin-bottom: 28px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: steps;
}

.steps li {
  position: relative;
  min-height: 210px;
  padding: 70px 20px 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  counter-increment: steps;
}

.steps li::before {
  content: counter(steps);
  position: absolute;
  top: 18px;
  left: 20px;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--ink);
  color: #ffffff;
  font-weight: 800;
}

.steps strong,
.steps span {
  display: block;
}

.steps span {
  margin-top: 10px;
  color: var(--muted);
}

.download-section {
  padding: 78px 0;
  background: #eaf2f6;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.download-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: clamp(24px, 5vw, 58px);
  align-items: center;
}

.service-status {
  min-height: 24px;
  margin: 18px 0 0;
  font-weight: 700;
}

.service-status.ok {
  color: var(--green-dark);
}

.service-status.error {
  color: var(--red);
}

.download-card {
  padding: 22px;
  box-shadow: 0 18px 40px rgba(23, 32, 38, 0.1);
}

.download-card dl {
  display: grid;
  gap: 14px;
  margin: 0;
}

.download-card div {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.download-card div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.download-card dt {
  color: var(--muted);
  font-size: 0.86rem;
}

.download-card dd {
  margin: 4px 0 0;
  font-weight: 800;
}

.hash-value {
  font-family: Consolas, Monaco, monospace;
  font-size: 0.78rem;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.text-button {
  width: 100%;
  min-height: 44px;
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--blue);
  cursor: pointer;
  font-weight: 800;
}

.text-button:hover,
.text-button:focus-visible {
  border-color: var(--blue);
}

.faq-grid {
  grid-template-columns: repeat(2, 1fr);
}

.site-footer {
  padding: 30px 0;
  background: #172026;
  color: #ffffff;
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.footer-grid p {
  max-width: 600px;
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.72);
}

.footer-grid a {
  color: #ffffff;
  font-weight: 800;
  text-decoration: none;
}

@media (max-width: 920px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .main-nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero,
  .split-section,
  .download-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 38px;
  }

  .assurance-list,
  .feature-grid,
  .steps,
  .faq-grid {
    grid-template-columns: 1fr 1fr;
  }

  .download-card {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .section-shell {
    width: min(100% - 24px, 1120px);
  }

  .hero-actions,
  .footer-grid {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .phone-stage {
    min-height: auto;
    padding: 14px;
  }

  .phone {
    min-height: auto;
  }

  .app-preview {
    min-height: 480px;
  }

  .assurance-list,
  .feature-grid,
  .steps,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .steps li {
    min-height: auto;
  }
}