:root {
  color-scheme: dark;
  --bg: #08080c;
  --panel: #121216;
  --panel-2: #19191d;
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(255, 255, 255, 0.22);
  --fg: #f4f2ee;
  --muted: rgba(244, 242, 238, 0.68);
  --faint: rgba(244, 242, 238, 0.44);
  --ink: #191713;
  --yellow: #f2cb3c;
  --pink: #f2abde;
  --green: #4d5e3d;
  --stone: #c7c5be;
  --orange: #e89a5c;
  --sage: #b5c18f;
  --blue: #93a6cf;
  --danger: #e5604d;
  --radius: 22px;
  --max: 1120px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), transparent 280px),
    radial-gradient(circle at 76% 12%, rgba(232, 154, 92, 0.14), transparent 30vw),
    var(--bg);
  color: var(--fg);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(8, 8, 12, 0.78);
  backdrop-filter: blur(22px);
}

.nav {
  width: min(var(--max), calc(100% - 40px));
  height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-right: auto;
  font-weight: 760;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: block;
  object-fit: cover;
  background: transparent;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.24);
}

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

.nav-links a:hover {
  color: var(--fg);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.08);
  color: var(--fg);
  font-weight: 650;
}

.button.primary {
  border: 0;
  color: var(--ink);
  background: var(--fg);
}

.button.disabled {
  color: var(--faint);
  cursor: default;
}

main {
  overflow: hidden;
}

.section {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 86px 0;
}

.hero {
  min-height: calc(100svh - 68px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 430px;
  gap: 58px;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 54px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--faint);
  font-size: 12px;
  font-weight: 720;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1, h2, h3, p {
  margin-top: 0;
}

h1 {
  margin-bottom: 24px;
  max-width: 760px;
  font-size: clamp(48px, 8vw, 92px);
  line-height: 0.94;
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.lead {
  max-width: 620px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.7;
  letter-spacing: -0.01em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.meta-chip {
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.05);
  font-size: 13px;
}

.phone-shell {
  width: min(100%, 390px);
  margin-left: auto;
  padding: 12px;
  border-radius: 42px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.04));
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.42);
}

.phone-screen {
  min-height: 720px;
  border-radius: 32px;
  overflow: hidden;
  background: #0b0b0f;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.app-top {
  padding: 28px 24px 18px;
}

.app-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.app-title span {
  display: block;
  color: rgba(244, 242, 238, 0.44);
}

.hero-card {
  margin: 18px 20px 12px;
  padding: 18px;
  height: 122px;
  border-radius: 22px;
  color: var(--ink);
  background: var(--blue);
  display: flex;
  flex-direction: column;
}

.small-label {
  font-size: 12px;
  font-weight: 720;
  color: rgba(25, 23, 19, 0.64);
}

.amount {
  margin-top: auto;
  align-self: flex-end;
  font-size: 56px;
  font-weight: 760;
  letter-spacing: -0.06em;
}

.mosaic {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 0 20px 24px;
}

.tile {
  min-height: 134px;
  border-radius: 18px 18px 18px 0;
  padding: 15px;
  color: var(--ink);
  display: flex;
  flex-direction: column;
}

.tile strong {
  font-size: 15px;
  letter-spacing: -0.02em;
}

.tile span {
  margin-top: 3px;
  color: rgba(25, 23, 19, 0.62);
  font-size: 11px;
  font-family: "SF Mono", ui-monospace, monospace;
}

.tile b {
  margin-top: auto;
  align-self: flex-end;
  font-size: 34px;
  letter-spacing: -0.05em;
}

.tile.dark {
  color: var(--fg);
}

.tile.dark span {
  color: rgba(244, 242, 238, 0.62);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 30px;
}

.feature {
  min-height: 214px;
  padding: 22px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.055);
}

.feature-icon {
  width: 42px;
  height: 42px;
  margin-bottom: 22px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: var(--yellow);
  font-weight: 850;
}

.feature:nth-child(2) .feature-icon {
  background: var(--pink);
}

.feature:nth-child(3) .feature-icon {
  background: var(--sage);
}

.feature p,
.legal-card p,
.support-card p,
.faq p {
  color: var(--muted);
  line-height: 1.75;
}

.band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.split {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 48px;
  align-items: start;
}

.check-list {
  display: grid;
  gap: 12px;
}

.check {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 12px;
  align-items: start;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.045);
}

.dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: var(--stone);
  font-weight: 900;
}

.support-grid,
.legal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 28px;
}

.support-card,
.legal-card,
.faq {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.055);
}

.support-card.highlight {
  color: var(--ink);
  border: 0;
  background: var(--yellow);
}

.support-card.highlight p {
  color: rgba(25, 23, 19, 0.7);
}

.mail {
  display: inline-flex;
  margin-top: 12px;
  max-width: 100%;
  overflow-wrap: anywhere;
  font-size: clamp(22px, 4vw, 44px);
  font-weight: 780;
  letter-spacing: -0.05em;
}

.faq-stack {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.legal-shell {
  max-width: 860px;
  margin: 0 auto;
}

.legal-card {
  margin-top: 14px;
}

.legal-card ul,
.support-card ul,
.check-list ul {
  margin: 12px 0 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.8;
}

.footer {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0 44px;
  display: flex;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
  color: var(--faint);
  border-top: 1px solid var(--line);
  font-size: 13px;
}

.footer-links {
  display: flex;
  gap: 8px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
}

.footer-links a {
  padding: 7px 11px;
  border-radius: 999px;
  color: var(--muted);
}

.footer-links a:hover {
  color: var(--fg);
  background: rgba(255, 255, 255, 0.07);
}

@media (max-width: 860px) {
  .nav {
    width: min(100% - 44px, var(--max));
  }

  .nav-links {
    gap: 12px;
  }

  .nav-links a:not(.button) {
    display: none;
  }

  .section {
    width: min(100% - 44px, var(--max));
    padding: 60px 0;
  }

  h1 {
    font-size: clamp(44px, 12vw, 62px);
    line-height: 0.98;
  }

  h2 {
    font-size: clamp(30px, 9vw, 44px);
    line-height: 1.04;
  }

  .lead {
    font-size: 17px;
    line-height: 1.72;
  }

  .hero {
    padding-top: 44px;
    gap: 42px;
  }

  .support-card,
  .legal-card,
  .faq,
  .feature {
    padding: 22px;
  }

  .hero,
  .split,
  .grid-3,
  .support-grid,
  .legal-grid {
    grid-template-columns: 1fr;
  }

  .phone-shell {
    width: min(100%, 340px);
    margin: 8px auto 0;
  }

  .phone-screen {
    min-height: 640px;
  }

  .footer {
    width: min(100% - 44px, var(--max));
    padding: 28px 0 38px;
    flex-direction: row;
    align-items: center;
  }
}

@media (max-width: 420px) {
  .nav,
  .section,
  .footer {
    width: min(100% - 48px, var(--max));
  }

  .nav {
    height: 66px;
  }

  .brand {
    gap: 6px;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
    border-radius: 9px;
  }

  .nav-links {
    gap: 10px;
    font-size: 13px;
  }

  .button {
    min-height: 40px;
    padding: 0 14px;
  }

  .hero-actions .button {
    width: 100%;
  }

  .mail {
    font-size: clamp(20px, 7vw, 30px);
    letter-spacing: -0.035em;
  }

  .footer {
    gap: 12px;
  }

  .footer-links {
    gap: 4px;
  }

  .footer-links a {
    padding: 6px 9px;
  }
}