:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1c1d21;
  --muted: #6b7280;
  --border: #e6e8eb;
  --ios: #0a84ff;
  --android: #34c759;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 8px 24px rgba(0,0,0,.05);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1114;
    --card: #191c21;
    --text: #f2f3f5;
    --muted: #9aa0a8;
    --border: #2a2e35;
    --shadow: 0 1px 3px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}
.wrap { max-width: 680px; margin: 0 auto; padding: 24px 16px 60px; }
header.top { text-align: center; margin-bottom: 24px; }
header.top .logo {
  width: 76px; height: 76px; border-radius: 18px; object-fit: cover;
  box-shadow: var(--shadow); margin-bottom: 12px;
}
header.top h1 { font-size: 22px; margin: 4px 0; }
header.top .sub { color: var(--muted); font-size: 14px; margin: 0; }

.qr-box {
  background: var(--card); border: 1px solid var(--border); border-radius: 16px;
  box-shadow: var(--shadow); padding: 18px; text-align: center; margin: 0 auto 24px;
  max-width: 260px;
}
.qr-box canvas, .qr-box img { display: block; margin: 0 auto; border-radius: 8px; }
.qr-box .hint { color: var(--muted); font-size: 12px; margin-top: 10px; }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 16px;
  box-shadow: var(--shadow); padding: 16px 18px; margin-bottom: 14px;
}
.card .ver { font-size: 17px; font-weight: 600; }
.card .meta { color: var(--muted); font-size: 13px; margin-top: 2px; }
.card .desc {
  font-size: 14px; margin: 10px 0 14px; white-space: pre-wrap; word-break: break-word;
}
.badge {
  display: inline-block; font-size: 11px; font-weight: 600; padding: 2px 8px;
  border-radius: 999px; margin-left: 6px; vertical-align: 2px;
}
.badge.latest { background: rgba(10,132,255,.14); color: var(--ios); }

.btns { display: flex; gap: 10px; flex-wrap: wrap; }
.btn {
  flex: 1 1 auto; text-align: center; text-decoration: none; font-weight: 600;
  font-size: 15px; padding: 11px 16px; border-radius: 12px; min-width: 130px;
  transition: opacity .15s;
}
.btn:active { opacity: .7; }
.btn.primary-ios { background: var(--ios); color: #fff; }
.btn.primary-android { background: var(--android); color: #fff; }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }

.tip {
  font-size: 12.5px; color: var(--muted); background: var(--card);
  border: 1px dashed var(--border); border-radius: 12px; padding: 12px 14px; margin: 18px 0 4px;
}
.empty { text-align: center; color: var(--muted); padding: 48px 0; }

/* 落地页平台卡片 */
.platforms { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 480px) { .platforms { grid-template-columns: 1fr; } }
.platforms a {
  text-decoration: none; color: var(--text); background: var(--card);
  border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow);
  padding: 26px 18px; text-align: center; display: block; transition: transform .12s;
}
.platforms a:active { transform: scale(.98); }
.platforms .icn { font-size: 40px; }
.platforms .name { font-size: 18px; font-weight: 700; margin-top: 8px; }
.platforms .cnt { color: var(--muted); font-size: 13px; margin-top: 4px; }
footer.foot { text-align: center; color: var(--muted); font-size: 12px; margin-top: 32px; }