:root {
  --color-primary: #0052ff;
  --color-primary-active: #003ecc;
  --color-primary-disabled: #a8b8cc;
  --color-ink: #0a0b0d;
  --color-body: #5b616e;
  --color-body-strong: #0a0b0d;
  --color-muted: #7c828a;
  --color-muted-soft: #a8acb3;
  --color-hairline: #dee1e6;
  --color-hairline-soft: #eef0f3;
  --color-canvas: #ffffff;
  --color-surface-soft: #f7f7f7;
  --color-surface-card: #ffffff;
  --color-surface-strong: #eef0f3;
  --color-surface-dark: #0a0b0d;
  --color-surface-dark-elevated: #16181c;
  --color-on-primary: #ffffff;
  --color-on-dark: #ffffff;
  --color-on-dark-soft: #a8acb3;
  --color-semantic-up: #05b169;
  --color-semantic-down: #cf202f;
  --color-accent-yellow: #f4b000;
  --rounded-none: 0px;
  --rounded-xs: 4px;
  --rounded-sm: 8px;
  --rounded-md: 12px;
  --rounded-lg: 16px;
  --rounded-xl: 24px;
  --rounded-pill: 100px;
  --rounded-full: 9999px;
  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-base: 16px;
  --space-md: 20px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;
  --space-section: 96px;
  --font-display: "Coinbase Display", Inter, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Coinbase Sans", Inter, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Coinbase Mono", ui-monospace, "Segoe UI", "PingFang SC", "Microsoft YaHei", monospace;
  --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.04);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-canvas);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
}
a { color: var(--color-primary); text-decoration: none; }
img { max-width: 100%; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 48px; }

.site-header {
  height: 64px;
  background: var(--color-canvas);
  position: sticky;
  top: 0;
  z-index: 20;
}
.site-header.on-dark {
  background: var(--color-surface-dark);
}
.header-inner {
  height: 64px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.logo {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 22px;
  letter-spacing: -0.4px;
  color: var(--color-primary);
}
.logo:hover { color: var(--color-primary); }
.on-dark .logo { color: var(--color-on-dark); }
.nav { display: flex; gap: 24px; flex: 1; }
.nav a {
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
}
.on-dark .nav a { color: var(--color-on-dark); }
.nav a.on { color: var(--color-primary); }
.header-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.back { font-size: 13px; color: var(--color-muted); font-weight: 500; }
.on-dark .back { color: var(--color-on-dark-soft); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.15;
  border: 0;
  cursor: pointer;
  border-radius: var(--rounded-pill);
  padding: 12px 20px;
  height: 44px;
  text-decoration: none;
}
.btn-primary { background: var(--color-primary); color: var(--color-on-primary); }
.btn-primary:active { background: var(--color-primary-active); }
.btn-secondary { background: var(--color-surface-strong); color: var(--color-ink); }
.btn-secondary-dark { background: var(--color-surface-dark-elevated); color: var(--color-on-dark); }
.btn-outline-dark {
  background: transparent;
  color: var(--color-on-dark);
  box-shadow: inset 0 0 0 1px #fff;
  padding: 11px 19px;
}
.btn-cta { height: 56px; padding: 16px 32px; }
.btn-text { background: transparent; color: var(--color-primary); height: auto; padding: 0; }

.hero {
  background: var(--color-surface-dark);
  color: var(--color-on-dark);
  padding: 96px 0 80px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  background: var(--color-surface-strong);
  color: var(--color-ink);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
  border-radius: var(--rounded-pill);
  padding: 4px 12px;
  margin-bottom: 20px;
}
.hero .eyebrow {
  background: var(--color-surface-dark-elevated);
  color: var(--color-on-dark);
}
.hero h1 {
  font-family: var(--font-display);
  font-size: 72px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -2px;
  margin: 0 0 20px;
  color: var(--color-on-dark);
}
.hero p {
  margin: 0 0 32px;
  color: var(--color-on-dark-soft);
  max-width: 36em;
  font-size: 16px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.page-hero {
  padding: 72px 0 48px;
  background: var(--color-canvas);
}
.page-hero h1 {
  font-family: var(--font-display);
  font-size: 52px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -1.3px;
  margin: 0 0 16px;
}
.page-hero p { margin: 0; color: var(--color-body); max-width: 40em; }

.mock-stack { position: relative; min-height: 340px; }
.mock-card {
  background: var(--color-surface-dark-elevated);
  color: var(--color-on-dark);
  border-radius: var(--rounded-xl);
  padding: 32px;
}
.mock-card.front { position: relative; z-index: 2; }
.mock-card.back {
  position: absolute;
  right: -12px;
  top: 36px;
  width: 72%;
  transform: rotate(4deg);
  z-index: 1;
  opacity: 0.92;
}
.mock-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid #2a2d33;
}
.mock-row:last-child { border-bottom: 0; }
.asset-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--rounded-full);
  background: var(--color-surface-strong);
  flex-shrink: 0;
}
.mock-card .asset-icon { background: #2a2d33; }
.mock-name { flex: 1; font-size: 16px; font-weight: 600; }
.mock-ticker { display: block; font-size: 12px; font-weight: 400; color: var(--color-on-dark-soft); }
.num {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.4;
}
.up { color: var(--color-semantic-up); }
.down { color: var(--color-semantic-down); }

.band { padding: 96px 0; }
.band-soft { background: var(--color-surface-soft); }
.band-white { background: var(--color-canvas); }
.band-dark {
  background: var(--color-surface-dark);
  color: var(--color-on-dark);
  text-align: center;
}
.band h2, .section-title {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 400;
  line-height: 1.09;
  letter-spacing: -1px;
  margin: 0 0 12px;
}
.band-dark h2 { color: var(--color-on-dark); }
.lead { color: var(--color-body); margin: 0 0 40px; max-width: 38em; }
.band-dark .lead { color: var(--color-on-dark-soft); margin-left: auto; margin-right: auto; }

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.stat h3 {
  font-family: var(--font-mono);
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.5px;
  margin: 0 0 8px;
}
.stat p { margin: 0; color: var(--color-body); }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-xl);
  padding: 32px;
}
.card h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.33;
  margin: 0 0 8px;
}
.card p { margin: 0; color: var(--color-body); font-size: 16px; }
.ph {
  background: #e8eaee;
  color: var(--color-muted);
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin: -32px -32px 24px;
  border-radius: var(--rounded-xl) var(--rounded-xl) 0 0;
}

.asset-list { border-top: 1px solid var(--color-hairline); }
.asset-row {
  display: grid;
  grid-template-columns: 32px 1fr auto auto;
  gap: 16px;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-hairline);
}
.asset-row .name { font-weight: 600; }
.asset-row .ticker { color: var(--color-muted); font-size: 13px; margin-left: 8px; font-weight: 400; }

.list { list-style: none; margin: 0; padding: 0; }
.list li {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-hairline);
  font-size: 16px;
}
.list .date {
  font-family: var(--font-mono);
  color: var(--color-muted);
  font-size: 13px;
  min-width: 108px;
}

.tier {
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-xl);
  padding: 32px;
}
.tier.featured {
  background: var(--color-surface-dark);
  color: var(--color-on-dark);
  border-color: var(--color-surface-dark);
}
.tier h3 { margin: 0 0 8px; font-size: 18px; font-weight: 600; }
.tier .price {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 500;
  margin: 0 0 16px;
}
.tier ul { margin: 0 0 24px; padding-left: 18px; color: var(--color-body); }
.tier.featured ul { color: var(--color-on-dark-soft); }

form label { display: block; margin: 0 0 8px; font-size: 14px; font-weight: 600; }
form input, form textarea {
  width: 100%;
  max-width: 480px;
  padding: 14px 16px;
  height: 48px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-md);
  font: inherit;
  margin-bottom: 16px;
  background: var(--color-canvas);
  color: var(--color-ink);
}
form textarea { height: auto; }
form input:focus, form textarea:focus {
  outline: none;
  border: 2px solid var(--color-primary);
  padding: 13px 15px;
}

.site-footer {
  background: var(--color-canvas);
  color: var(--color-body);
  font-size: 14px;
  padding: 64px 0 24px;
  border-top: 1px solid var(--color-hairline);
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.footer-grid h4 {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-ink);
}
.footer-grid a { display: block; color: var(--color-body); font-size: 14px; padding: 4px 0; }
.legal { color: var(--color-muted); font-size: 13px; border-top: 1px solid var(--color-hairline-soft); padding-top: 24px; }
.legal p { margin: 0 0 4px; }

@media (max-width: 900px) {
  .wrap { padding: 0 20px; }
  .hero h1 { font-size: 40px; letter-spacing: -1px; }
  .hero-grid, .grid-3, .grid-2, .stats, .footer-grid { grid-template-columns: 1fr; }
  .mock-card.back { display: none; }
  .nav { display: none; }
  .page-hero h1 { font-size: 36px; }
  .band { padding: 64px 0; }
}

.ph { overflow: hidden; }
.ph img { width: 100%; height: 100%; object-fit: cover; display: block; }