* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  background: #f5f7fa;
  color: #1f2937;
  line-height: 1.6;
}
.container { max-width: 900px; margin: 0 auto; padding: 16px; }
.topbar { background: #ffffff; border-bottom: 1px solid #e5e7eb; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; }
.topbar nav a { margin-left: 16px; color: #2563eb; text-decoration: none; }
.hero { background: #ffffff; border: 1px solid #e5e7eb; border-radius: 8px; padding: 32px; margin: 16px 0; }
.hero h1 { font-size: 26px; margin-bottom: 8px; }
.hero p { color: #4b5563; margin-bottom: 8px; }
.version-line { color: #6b7280; font-size: 14px; }
.btn {
  display: inline-block; border: 1px solid #cbd5e1; background: #ffffff; color: #1f2937;
  padding: 8px 18px; border-radius: 6px; cursor: pointer; font-size: 14px; text-decoration: none;
}
.btn.primary { background: #2563eb; border-color: #2563eb; color: #fff; }
.btn:hover { opacity: 0.9; }
.panel {
  background: #ffffff; border: 1px solid #e5e7eb; border-radius: 8px;
  padding: 20px; margin: 16px 0;
}
.panel h2 { font-size: 18px; margin-bottom: 12px; }
.tabs { display: flex; gap: 8px; margin-bottom: 12px; }
.tab {
  border: 1px solid #cbd5e1; background: #fff; padding: 6px 14px; border-radius: 6px; cursor: pointer;
}
.tab.active { background: #2563eb; border-color: #2563eb; color: #fff; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
form label { display: block; margin-bottom: 10px; }
form input {
  width: 100%; padding: 8px; border: 1px solid #cbd5e1; border-radius: 6px; margin-top: 4px;
}
.account-info {
  background: #eff6ff; border: 1px solid #bfdbfe; border-radius: 6px; padding: 10px; margin-top: 10px;
}
.message { margin-top: 10px; font-size: 14px; color: #4b5563; white-space: pre-wrap; }
.message.error { color: #dc2626; }
.message.ok { color: #16a34a; }
.hidden { display: none; }
ol { padding-left: 22px; }
code { background: #f3f4f6; padding: 2px 6px; border-radius: 4px; }
.note { color: #6b7280; font-size: 14px; margin-top: 8px; }
.inline-form { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.inline-form input { padding: 8px; border: 1px solid #cbd5e1; border-radius: 6px; min-width: 140px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { border: 1px solid #e5e7eb; padding: 6px 8px; text-align: left; }
th { background: #f9fafb; }
textarea { width: 100%; min-height: 90px; margin-bottom: 12px; padding: 8px; border: 1px solid #cbd5e1; border-radius: 6px; }
.footer { text-align: center; color: #9ca3af; padding: 24px 0; font-size: 13px; }