:root {
  --color-primary: #fcd535;
  --color-primary-active: #f0b90b;
  --color-ink: #181a20;
  --color-body: #eaecef;
  --color-muted: #707a8a;
  --color-hairline-on-dark: #2b3139;
  --color-canvas-dark: #0b0e11;
  --color-surface-card-dark: #1e2329;
  --color-on-primary: #181a20;
  --color-on-dark: #ffffff;
  --color-trading-up: #0ecb81;
  --color-trading-down: #f6465d;
  --font-display: BinanceNova, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-number: BinancePlex, BinanceNova, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --rounded-md: 6px;
  --rounded-lg: 8px;
  --rounded-xl: 12px;
  --rounded-pill: 9999px;
}

* { box-sizing: border-box; }
html { background: #000; }
body {
  margin: 0 auto;
  max-width: 390px;
  min-height: 100vh;
  font-family: var(--font-display);
  color: var(--color-body);
  background: var(--color-canvas-dark);
  line-height: 1.5;
  padding-bottom: 56px;
  font-size: 14px;
}
a { color: var(--color-primary); text-decoration: none; }

.top {
  padding: 12px 16px;
  display: flex; align-items: center; justify-content: space-between;
  min-height: 64px; background: var(--color-canvas-dark);
  border-bottom: 1px solid var(--color-hairline-on-dark);
  position: sticky; top: 0;
}
.logo { font-weight: 700; color: var(--color-primary); font-size: 18px; }
.back { font-size: 12px; color: var(--color-muted); }

.hero { padding: 32px 16px 16px; }
.hero h1 {
  font-size: 28px; font-weight: 700; letter-spacing: -0.5px;
  color: var(--color-on-dark); margin: 0 0 8px;
}
.hero h1 em { font-style: normal; color: var(--color-primary); }
.hero p { margin: 0; color: var(--color-muted); font-size: 13px; }

.block { padding: 16px; }
.block h2 { font-size: 16px; font-weight: 600; color: var(--color-on-dark); margin: 0 0 12px; }

.cell {
  display: block; color: var(--color-on-dark);
  background: var(--color-surface-card-dark);
  border-radius: var(--rounded-xl);
  padding: 16px; margin-bottom: 8px;
}
.cell:hover { text-decoration: none; }
.cell h3 { margin: 0 0 4px; font-size: 16px; font-weight: 600; }
.cell p { margin: 0; color: var(--color-muted); font-size: 13px; }

.row {
  display: flex; justify-content: space-between; gap: 8px;
  padding: 12px 0; border-bottom: 1px solid var(--color-hairline-on-dark); font-size: 14px;
}
.row:last-child { border-bottom: 0; }
.row span { color: var(--color-muted); }
.row b { font-family: var(--font-number); color: var(--color-primary); font-weight: 700; }

.ph {
  background: var(--color-surface-card-dark); color: var(--color-muted);
  height: 120px; display: flex; align-items: center; justify-content: center;
  font-size: 13px; margin-bottom: 12px; border-radius: var(--rounded-xl);
}

form label { display: block; margin: 0 0 4px; font-size: 12px; color: var(--color-muted); }
form input, form textarea {
  width: 100%; padding: 10px 16px; border: 1px solid var(--color-hairline-on-dark);
  border-radius: var(--rounded-md); font: inherit; margin-bottom: 12px;
  background: var(--color-surface-card-dark); color: var(--color-on-dark);
}
form button {
  width: 100%; padding: 12px; border: 0;
  background: var(--color-primary); color: var(--color-on-primary);
  font: inherit; font-weight: 600; border-radius: var(--rounded-md);
}

.tab {
  position: fixed; left: 50%; bottom: 0; transform: translateX(-50%);
  width: 100%; max-width: 390px;
  display: flex; background: var(--color-canvas-dark);
  border-top: 1px solid var(--color-hairline-on-dark);
}
.tab a { flex: 1; text-align: center; padding: 10px 0; font-size: 11px; color: var(--color-muted); font-weight: 500; }
.tab a.on { color: var(--color-primary); }

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