:root {
  --bg: #0f172a;
  --card: #1e293b;
  --text: #e5e7eb;
  --up: #4ade80;
  --down: #f87171;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI";
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 900px;
  margin: auto;
  padding: 16px;
}

.card {
  background: var(--card);
  padding: 16px;
  border-radius: 12px;
  margin-bottom: 20px;
}

input, select, button {
  width: 100%;
  padding: 10px;
  margin: 6px 0;
  border-radius: 8px;
  border: none;
}

button {
  background: #38bdf8;
  color: #000;
  cursor: pointer;
}

/* ===== 钱包列表：手机端左右滑动 ===== */
.wallet-grid {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  gap: 12px;
  padding-bottom: 8px;
}

.wallet-grid::-webkit-scrollbar {
  height: 6px;
}

.wallet-grid::-webkit-scrollbar-thumb {
  background: #475569;
  border-radius: 3px;
}

.wallet-card {
  background: #334155;
  padding: 12px;
  border-radius: 10px;
  min-width: 81vw;        /* 手机端一屏一张 */
  scroll-snap-align: start;
  flex-shrink: 0;
  box-sizing: border-box;   /* ✅ 关键 */
}

.up { color: var(--up); }
.down { color: var(--down); }

@media (max-width: 600px) {
  h1 { font-size: 22px; }
}