/* Reset */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:Arial,Helvetica,sans-serif;line-height:1.6;color:#333;background:#f8f8f8;padding-bottom:40px}

/* Header */
header{background:#111;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0px 20px;position:sticky;top:0;z-index:999}
.brand {
  display: flex;
  align-items: center;
  gap: 20px;          /* Logo 与文字间距 */
  font-weight: 700;
  font-size: 1.2em;
}
nav ul{list-style:none;display:flex;gap:15px}
nav a{color:#fff;text-decoration:none;padding:5px 8px;border-radius:4px;transition:.3s}
nav a:hover{background:#444}

.btn-download{
  display:block;
  margin:20px auto;
  padding:10px 30px;          /* 左右用 30px 即可，按需改 */
  min-width:0;
  max-width:100%;
  white-space:nowrap;
  overflow:hidden;
  text-align:center;

  /* 其余样式 */
  background:#128d3d;
  color:#fff;
  border:2px solid #fff;
  border-radius:30px;
  font-size:1rem;
  font-weight:bold;
  text-decoration:none;
  transition:.3s;
}
.btn-download:hover{
  background:#289b50;
}
/* Hamburger */
#hamburger{display:none;background:none;border:none;color:#fff;font-size:1.8em;cursor:pointer}
@media(max-width:768px){
  #hamburger{display:block}
  nav{position:absolute;top:48px;right:10px;background:#111;padding:10px;border-radius:6px;display:none}
  nav.open{display:block}
  nav ul{flex-direction:column}
}

/* Page switch */
.page{display:none;padding:20px;max-width:800px;margin:auto}
.page.active{display:block}
table{width:100%;border-collapse:collapse;margin:15px 0}
table td{padding:6px 10px;border-bottom:1px solid #ddd}
img{max-width:100%;height:auto;display:block;margin:15px auto}
.warn{color:#d9534f;font-size:.9em;margin-top:30px}
.note{font-size:.85em;color:#555;margin-top:10px}

.reg-card{
  border:2px solid #128d3d;   /* 绿色边框 */
  border-radius:10px;
  padding:10px;
  margin:20px auto;
  max-width:600px;           /* 按需调整宽度 */
  background:#ffffff;
}
.reg-card h2{
  margin-top:0;
  color:#128d3d;
  font-size:1.25rem;
}
.reg-card ol{
  margin:0;
  padding-left:20px;
}
.reg-card li{
  margin-bottom:8px;
}
/* 页脚样式 */
footer{
  margin-top:40px;
  padding:15px 0;
  background:#111;
  color:#fff;
  text-align:center;
  font-size:.85rem;
}