:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #667085;
  --line: #e5e7eb;
  --paper: #ffffff;
  --wash: #f6f8fb;
  --blue: #1769ff;
  --cyan: #1ab7d8;
  --red: #df3f46;
  --green: #13a873;
  --navy: #172033;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 clamp(20px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(229, 231, 235, 0.72);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 750;
}

.brand img { width: 34px; height: 34px; object-fit: contain; }

.nav {
  display: flex;
  gap: 30px;
  color: var(--muted);
  font-size: 15px;
}

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

.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 6px;
  font-weight: 700;
}

.primary-btn {
  color: #fff;
  background: var(--blue);
}

.secondary-btn {
  color: var(--navy);
  background: #eef4ff;
}

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.85fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  padding: clamp(48px, 8vw, 92px) clamp(20px, 5vw, 72px) 56px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(23, 105, 255, 0.08), transparent 42%),
    linear-gradient(180deg, #fff 0%, #f8fafc 100%);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(56px, 8vw, 112px);
  line-height: 0.92;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  letter-spacing: 0;
}

.lead {
  max-width: 650px;
  color: #394150;
  font-size: clamp(18px, 2.4vw, 24px);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 32px 0;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-stats span {
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--muted);
}

.hero-stats strong {
  display: block;
  color: var(--ink);
  font-size: 22px;
}

.hero-visual {
  position: relative;
  min-height: 560px;
  display: grid;
  place-items: center;
}

.globe {
  position: absolute;
  width: min(560px, 92%);
  opacity: 0.92;
  transform: translateY(-24px);
}

.phone {
  position: relative;
  width: min(360px, 78vw);
  aspect-ratio: 9 / 18;
  padding: 30px 22px;
  border: 10px solid #171b25;
  border-radius: 42px;
  background: #101827;
  box-shadow: 0 36px 90px rgba(23, 32, 51, 0.28);
}

.phone-top {
  width: 88px;
  height: 6px;
  margin: 0 auto 32px;
  border-radius: 999px;
  background: #2c3546;
}

.quote-row,
.trade-panel {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  padding: 16px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.quote-row span,
.trade-panel span { color: #9ca9bd; }
.quote-row.up b { color: #ff6b72; }
.quote-row.down b { color: #34d399; }

.chart {
  height: 210px;
  display: flex;
  align-items: end;
  gap: 11px;
  padding: 24px 8px;
}

.chart i {
  flex: 1;
  min-width: 14px;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, var(--cyan), var(--blue));
}

.chart i:nth-child(1) { height: 48%; }
.chart i:nth-child(2) { height: 72%; }
.chart i:nth-child(3) { height: 42%; background: linear-gradient(180deg, #ff858b, var(--red)); }
.chart i:nth-child(4) { height: 86%; }
.chart i:nth-child(5) { height: 58%; }
.chart i:nth-child(6) { height: 95%; background: linear-gradient(180deg, #ff858b, var(--red)); }
.chart i:nth-child(7) { height: 66%; }

.trade-panel {
  display: block;
  margin-top: 6px;
}

.trade-panel strong {
  display: block;
  margin-top: 8px;
  font-size: 28px;
  color: #fff;
}

.section {
  padding: clamp(64px, 9vw, 118px) clamp(20px, 5vw, 72px);
}

.section-head {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-head p:not(.eyebrow),
.feature-copy p,
.showcase p,
.security p,
.security p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.market-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.market-grid article {
  min-height: 310px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.market-grid img,
.market-symbol {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: 22px;
}

.market-symbol {
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 48px;
  font-weight: 850;
  background: linear-gradient(135deg, #d63e43, #1769ff);
}

.market-grid p,
.feature-list p,
.steps span {
  color: var(--muted);
  line-height: 1.72;
}

.feature-band {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 42px;
  color: #fff;
  background: var(--navy);
}

.feature-band .eyebrow { color: #7dd3fc; }
.feature-copy p { color: #c8d2e2; }

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.feature-list div {
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.feature-list span {
  display: inline-block;
  margin-bottom: 22px;
  color: #7dd3fc;
  font-weight: 850;
}

.feature-list p { color: #c8d2e2; }

.showcase {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  padding: clamp(56px, 8vw, 108px) clamp(20px, 5vw, 72px);
  background: var(--wash);
}

.showcase img {
  width: min(480px, 100%);
  margin: 0 auto;
  display: block;
}

.steps ol {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: step;
}

.steps li {
  counter-increment: step;
  min-height: 210px;
  padding: 26px;
  border-left: 4px solid var(--blue);
  background: var(--wash);
}

.steps li::before {
  content: "0" counter(step);
  display: block;
  margin-bottom: 34px;
  color: var(--blue);
  font-size: 28px;
  font-weight: 850;
}

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

.steps strong {
  margin-bottom: 12px;
  font-size: 22px;
}

.security {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(280px, 0.8fr);
  gap: 40px;
  align-items: center;
  background: #fbfcff;
}

.security-points {
  display: grid;
  gap: 12px;
}

.security-points span {
  padding: 18px 20px;
  border-radius: 6px;
  background: #fff;
  border: 1px solid var(--line);
  font-weight: 700;
}

.about {
  background: var(--wash);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
}

.about-item {
  margin: 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.about-item dt {
  margin-bottom: 10px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.about-item dd {
  margin: 0;
  color: var(--ink);
  font-size: 17px;
  line-height: 1.65;
  word-break: break-word;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px clamp(20px, 5vw, 72px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 920px) {
  .nav { display: flex; font-size: 14px; gap: 18px; }
  .hero,
  .feature-band,
  .showcase,
  .security {
    grid-template-columns: 1fr;
  }
  .hero-visual { min-height: 470px; }
  .market-grid,
  .steps ol,
  .about-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .site-header { height: 64px; padding: 0 16px; }
  .brand { font-size: 18px; }
  .brand img { width: 30px; height: 30px; }
  .hero { min-height: auto; padding-top: 42px; }
  .feature-list { grid-template-columns: 1fr; }
  footer {
    flex-direction: column;
    align-items: flex-start;
  }
  .phone { border-radius: 34px; }
}