:root {
  color-scheme: dark;
  --bg: #05070a;
  --surface: rgba(13, 18, 26, 0.84);
  --surface-strong: #101827;
  --line: rgba(148, 163, 184, 0.22);
  --line-strong: rgba(56, 189, 248, 0.34);
  --text: #f8fafc;
  --muted: #b6c4d7;
  --faint: #8190a4;
  --cyan: #38bdf8;
  --green: #34d399;
  --gold: #f7c948;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background: var(--bg);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: inherit;
}

.site-bg {
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(5, 7, 10, 0.08), #05070a 760px),
    url("./assets/bitmine-background.png") top center / min(1254px, 120vw) auto no-repeat,
    #05070a;
}

.topbar,
.hero-inner,
.section,
.policy-page,
footer {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
  font-weight: 900;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(247, 201, 72, 0.44);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(247, 201, 72, 0.96), rgba(52, 211, 153, 0.88));
  color: #061016;
  font-size: 15px;
  letter-spacing: 0;
  box-shadow: 0 16px 34px rgba(247, 201, 72, 0.2);
}

.brand-name {
  white-space: nowrap;
}

nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

nav a,
footer a,
.brand {
  text-decoration: none;
}

nav a:hover,
footer a:hover,
.policy-card a:hover,
.support a:hover {
  color: var(--cyan);
}

.hero {
  min-height: 690px;
  display: flex;
  align-items: center;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 430px);
  gap: 48px;
  align-items: center;
  padding: 32px 0 72px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1,
.policy-hero h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(48px, 8vw, 96px);
  line-height: 0.94;
  letter-spacing: 0;
}

.hero-subtitle,
.policy-hero p,
.card p,
.notice p,
.support p,
.policy-card p,
.policy-card li,
.panel li {
  color: var(--muted);
  line-height: 1.7;
}

.hero-subtitle {
  max-width: 690px;
  margin: 24px 0 0;
  font-size: 20px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.actions.inline {
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  color: var(--text);
  font-weight: 900;
  text-decoration: none;
  white-space: nowrap;
}

.button.primary {
  border-color: var(--cyan);
  background: var(--cyan);
  color: #041018;
}

.button.primary:hover {
  background: #7dd3fc;
}

.button.secondary {
  background: rgba(15, 23, 42, 0.68);
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.hero-points span {
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: rgba(15, 23, 42, 0.56);
  font-size: 13px;
  font-weight: 800;
}

.product-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(16, 24, 39, 0.88), rgba(4, 11, 18, 0.92));
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.45);
  overflow: hidden;
}

.phone-shell {
  margin: 24px auto;
  width: min(310px, calc(100% - 42px));
  min-height: 560px;
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 34px;
  background: #071018;
  padding: 18px;
}

.phone-screen {
  min-height: 520px;
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(56, 189, 248, 0.1), transparent 180px),
    #0b1220;
  padding: 18px;
}

.app-status {
  display: flex;
  justify-content: space-between;
  color: var(--faint);
  font-size: 12px;
  font-weight: 800;
}

.app-title {
  margin-top: 28px;
}

.app-title strong {
  display: block;
  font-size: 28px;
}

.app-title span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}

.balance {
  margin-top: 24px;
  padding: 18px;
  border: 1px solid rgba(56, 189, 248, 0.24);
  border-radius: 8px;
  background: rgba(8, 47, 73, 0.36);
}

.balance span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.balance strong {
  display: block;
  margin-top: 8px;
  color: var(--gold);
  font-size: 34px;
}

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

.mini-card {
  min-height: 82px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.66);
}

.mini-card span {
  color: var(--faint);
  font-size: 11px;
  font-weight: 800;
}

.mini-card strong {
  display: block;
  margin-top: 12px;
}

.section {
  padding: 32px 0;
}

.notice,
.policy-card,
.feature-wrap,
.support {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.notice {
  padding: 28px;
  border-color: rgba(247, 201, 72, 0.34);
}

.notice h2,
.section h2,
.policy-card h2 {
  margin: 0 0 10px;
}

.notice h2,
.section h2 {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.08;
}

.feature-wrap {
  padding: 28px;
}

.section-head {
  margin-bottom: 22px;
}

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

.card {
  min-height: 220px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.92), rgba(8, 18, 28, 0.86));
}

.card-number {
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
}

.card h3 {
  margin: 18px 0 10px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 1.18fr);
  gap: 24px;
  align-items: start;
}

.panel {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-strong);
}

.panel ul,
.policy-card ul,
.policy-card ol {
  margin: 0;
  padding-left: 20px;
}

.panel li + li,
.policy-card li + li {
  margin-top: 8px;
}

.support {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  padding: 28px;
}

.policy-page {
  max-width: 940px;
}

.policy-hero {
  padding: 64px 0 24px;
}

.policy-hero h1 {
  font-size: clamp(40px, 6vw, 68px);
}

.policy-card {
  padding: 30px;
  margin-bottom: 32px;
}

.policy-card h2 {
  margin-top: 28px;
}

.policy-card h2:first-child {
  margin-top: 0;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 30px 0 42px;
  color: var(--faint);
  font-size: 14px;
}

footer span {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

@media (max-width: 940px) {
  .topbar,
  nav,
  .hero-inner,
  .split,
  .support,
  footer {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  nav {
    gap: 12px;
  }

  .hero {
    min-height: 0;
  }

  .hero-inner {
    padding-top: 24px;
  }

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

  .product-panel {
    width: 100%;
  }
}

@media (max-width: 520px) {
  h1,
  .policy-hero h1 {
    font-size: 42px;
  }

  .button {
    width: 100%;
  }

  .phone-shell {
    width: 100%;
    margin: 16px 0;
  }
}