:root {
  --bg: #0e1117;
  --card: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --sub: #8b949e;
  --up: #2ecc71;
  --down: #ff4757;
  --primary: #2f81f7;
}

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

.nav {
  display: flex;
  justify-content: space-around;
  background: #010409;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.nav a {
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  font-weight: bold;
}

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

.container {
  padding: 14px;
}

.banner {
  background: linear-gradient(135deg, #2f81f7, #3867d6);
  border-radius: 14px;
  padding: 3px;
  margin-bottom: 16px;
}

.banner h2 {
  margin: 0;
  font-size: 22px;
}

.banner p {
  margin-top: 6px;
  font-size: 13px;
  color: rgba(255,255,255,.85);
}
.banner-img {
  height: 150px;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 16px;
}

.banner-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.search input {
  width: 100%;
  padding: 12px 0;
  border-radius: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
}
.search input::placeholder {
  padding-left: 8px;
}
.section-title {
  margin: 18px 0 10px;
  font-size: 14px;
  color: var(--sub);
}

.coin-card {
  background: var(--card);
  border-radius: 14px;
  padding: 14px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
}

.coin-info {
  flex: 1;
}

.coin-info b {
  font-size: 15px;
}

.coin-info span {
  font-size: 12px;
  color: var(--sub);
}

.price {
  font-size: 15px;
  font-weight: 600;
}

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

.badge {
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 6px;
  margin-top: 4px;
  display: inline-block;
}

.btn {
  background: var(--primary);
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 12px;
  cursor: pointer;
  white-space: nowrap;
}

.btn.gray {
  background: #30363d;
}

canvas.mini {
  width: 90px !important;
  height: 40px !important;
  margin-right: 10px;
}

.fixed-bottom {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px;
  background: #010409;
  border-top: 1px solid var(--border);
}

.fixed-bottom .btn {
  width: 100%;
  text-align: center;
  font-size: 15px;
  padding: 12px 0;
}

.popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  background: rgba(0,0,0,.85);
  padding: 14px 22px;
  border-radius: 12px;
  font-size: 14px;
  display: none;
}
/* 热门币种轮播 */
.hot-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 16px;
}

.hot-scroll {
  display: flex;
  gap: 12px;
}

.hot-card {
  min-width: 160px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  flex-shrink: 0;
}

.hot-card b {
  font-size: 15px;
}

.hot-card span {
  font-size: 12px;
  color: var(--sub);
}

.hot-price {
  font-size: 14px;
  font-weight: 600;
  margin-top: 6px;
}

.hot-change {
  font-size: 12px;
  margin-top: 2px;
}

.hot-card canvas {
  margin-top: 6px;
  width: 100% !important;
  height: 40px !important;
}