:root {
  --bg: #08090c;
  --text: #f8fafc;
  --muted: #a3adbd;
  --line: rgba(255, 255, 255, 0.12);
  --gold: #d9ad45;
  --gold-2: #f3d877;
  --green: #18b982;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 72% 8%, rgba(24, 185, 130, 0.14), transparent 28%),
    radial-gradient(circle at 16% 18%, rgba(217, 173, 69, 0.18), transparent 30%),
    #08090c;
  color: var(--text);
  font-family: Arial, "Microsoft YaHei", sans-serif;
}

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

button {
  font: inherit;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
}

.brand strong,
.brand small {
  display: block;
}

.brand small,
.lead,
.download-card p,
.phone span,
.param-grid span,
.notice,
.node-steps span {
  color: var(--muted);
}

nav {
  display: flex;
  gap: 8px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
}

nav a {
  padding: 9px 12px;
  border-radius: 999px;
  font-size: 14px;
}

nav a:hover {
  background: rgba(255, 255, 255, 0.08);
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 30px 24px 52px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: 28px;
  align-items: center;
}

.kicker {
  margin: 0 0 10px;
  color: var(--gold-2);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(46px, 7vw, 88px);
  line-height: 0.98;
}

h2 {
  font-size: clamp(25px, 3vw, 36px);
  line-height: 1.1;
}

.lead {
  max-width: 690px;
  margin-top: 18px;
  font-size: 19px;
  line-height: 1.7;
}

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

.primary,
.secondary,
.download-card button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 900;
}

.primary,
.download-card button {
  border: 0;
  background: var(--gold);
  color: #111;
  cursor: pointer;
}

.secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
}

.phone,
.download-card,
.info-panel,
.node-steps div {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.035));
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.2);
}

.phone {
  max-width: 390px;
  justify-self: end;
  padding: 18px;
}

.phone-top,
.wallet-actions,
.asset-list div,
.param-grid div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.phone-top span {
  width: 42px;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
}

.balance-card {
  display: grid;
  gap: 8px;
  margin-top: 18px;
  padding: 18px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(217, 173, 69, 0.28), rgba(24, 185, 130, 0.12));
}

.balance-card strong {
  font-size: 30px;
}

.wallet-actions {
  margin: 16px 0;
}

.wallet-actions button {
  flex: 1;
  min-height: 42px;
  border: 1px solid rgba(243, 216, 119, 0.3);
  border-radius: 14px;
  background: rgba(217, 173, 69, 0.12);
  color: var(--gold-2);
  font-weight: 900;
}

.asset-list {
  display: grid;
  gap: 10px;
}

.asset-list div,
.param-grid div {
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 26px;
}

.download-card {
  display: grid;
  gap: 13px;
  padding: 20px;
}

.download-card.featured {
  border-color: rgba(243, 216, 119, 0.5);
  background: linear-gradient(180deg, rgba(217, 173, 69, 0.18), rgba(255, 255, 255, 0.045));
}

.download-card span {
  color: var(--gold-2);
  font-weight: 900;
}

.download-card p {
  line-height: 1.6;
}

.info-panel {
  margin-top: 18px;
  padding: 22px;
}

.node-panel {
  background:
    radial-gradient(circle at 12% 0%, rgba(24, 185, 130, 0.14), transparent 34%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.035));
}

.node-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.node-steps div {
  display: grid;
  gap: 10px;
  padding: 16px;
  border-radius: 16px;
}

.node-steps b {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: rgba(24, 185, 130, 0.16);
  color: #c8f7e5;
}

.notice.compact {
  margin-top: 10px;
}

.node-link {
  width: fit-content;
  margin-top: 16px;
}

.param-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.notice {
  margin-top: 16px;
  line-height: 1.7;
}

@media (max-width: 900px) {
  nav {
    display: none;
  }

  .hero,
  .download-grid,
  .param-grid,
  .node-steps {
    grid-template-columns: 1fr 1fr;
  }

  .phone {
    justify-self: stretch;
    max-width: none;
  }
}

@media (max-width: 620px) {
  .topbar,
  main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero,
  .download-grid,
  .param-grid,
  .node-steps {
    grid-template-columns: 1fr;
  }
}