*{margin:0;padding:0;box-sizing:border-box}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:#f9fafb;color:#1f2937;line-height:1.7;-webkit-font-smoothing:antialiased;
}
.wrap{max-width:700px;margin:0 auto;padding:40px 24px 60px}

/* Header */
.header{margin-bottom:8px}
.badge{display:inline-block;background:#10b981;color:#fff;padding:4px 14px;border-radius:20px;font-size:13px;font-weight:600}
h1{font-size:28px;font-weight:700;margin-bottom:24px}

/* Download card */
.dl-card{
  background:#fff;border-radius:12px;padding:24px;
  box-shadow:0 1px 3px rgba(0,0,0,.06);
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:16px;margin-bottom:24px;
  border:1px solid #e5e7eb;
}
.dl-btn{
  background:#2563eb;color:#fff;border:none;padding:12px 28px;border-radius:8px;
  font-size:15px;font-weight:600;cursor:pointer;text-decoration:none;
  transition:all .2s;
}
.dl-btn:hover{background:#1d4ed8;transform:translateY(-1px)}
.dl-meta{font-size:13px;color:#6b7280}

/* Sections */
.card{
  background:#fff;border-radius:12px;padding:24px;
  box-shadow:0 1px 3px rgba(0,0,0,.04);
  margin-bottom:20px;border:1px solid #e5e7eb;
}
.card h2{font-size:17px;font-weight:700;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid #e5e7eb}
.card ul,.card ol{padding-left:20px;margin:8px 0}
.card li{margin-bottom:8px;font-size:14px;color:#4b5563}
.step-block{margin-bottom:20px}
.step-block h3{font-size:14px;font-weight:700;margin-bottom:8px;color:#374151}

code{background:#f3f4f6;padding:2px 8px;border-radius:4px;font-size:12px;color:#2563eb}

/* Tips */
.tips{
  background:#fffbeb;border:1px solid #fde68a;border-left:4px solid #f59e0b;
  padding:12px 16px;border-radius:0 8px 8px 0;font-size:13px;color:#92400e;
  margin-top:20px;line-height:1.8;
}

/* Footer */
footer{text-align:center;color:#9ca3af;font-size:13px;margin-top:8px}
footer a{color:#6b7280;text-decoration:none}
footer a:hover{color:#2563eb}

@media(max-width:500px){
  .dl-card{flex-direction:column;align-items:flex-start}
  h1{font-size:22px}
}