:root {
  --bg: #f4f7f8;
  --panel: #ffffff;
  --line: #dfe6ea;
  --text: #1e293b;
  --muted: #64748b;
  --accent: #0f766e;
  --accent-dark: #115e59;
  --danger: #b42318;
  --warning: #b45309;
  --ok: #15803d;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
a { color: var(--accent); }
.page { max-width: 680px; margin: 0 auto; padding: 18px 16px 40px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.brand { font-size: 18px; font-weight: 700; letter-spacing: 0; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 14px;
  box-shadow: 0 1px 2px rgba(15,23,42,0.03);
}
.panel h2, .panel h3 { margin: 0 0 12px; font-size: 16px; }
.grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
.field { border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.field-label { font-size: 13px; color: var(--muted); margin: 0 0 2px; }
.field-value { font-size: 15px; font-weight: 600; overflow-wrap: anywhere; }
.row { display: flex; flex-wrap: wrap; gap: 12px; }
.row > * { flex: 1 1 160px; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; line-height: 18px; font-weight: 600; }
.badge.normal { background: #dcfce7; color: var(--ok); }
.badge.upcoming { background: #fef3c7; color: var(--warning); }
.badge.overdue { background: #fee2e2; color: var(--danger); }
.badge.off { background: #e5e7eb; color: #475569; }
button, .btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: 1px solid transparent; border-radius: 6px; padding: 8px 12px;
  font: inherit; font-size: 14px; font-weight: 600; cursor: pointer;
  background: var(--accent); color: #fff; min-height: 36px;
}
button:hover, .btn:hover { background: var(--accent-dark); }
button.secondary, .btn.secondary { background: #fff; color: var(--text); border-color: var(--line); }
button.danger { background: var(--danger); }
button.ghost { background: transparent; color: var(--accent); }
input, select, textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 6px;
  padding: 8px 10px; font: inherit; font-size: 14px; color: var(--text); background: #fff;
}
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(15,118,110,0.18); border-color: var(--accent); }
textarea { min-height: 86px; resize: vertical; }
.form-item { margin-bottom: 12px; }
.form-item label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 5px; }
.form-actions { display: flex; gap: 10px; justify-content: flex-end; }
.error, .empty { color: var(--muted); text-align: center; padding: 20px 10px; }
.error { color: var(--danger); }
.list-item { padding: 13px 0; border-bottom: 1px solid var(--line); }
.list-item:last-child { border-bottom: 0; }
.list-title { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.list-meta { font-size: 13px; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.faq-q { font-weight: 700; margin-bottom: 4px; }
.faq-a { color: #475569; white-space: pre-wrap; }
.tabbar { display: flex; gap: 8px; margin-bottom: 14px; overflow-x: auto; }
.tab { flex: 0 0 auto; }
.tab.active { background: var(--accent-dark); }
.hidden { display: none !important; }
.qr { width: 210px; height: 210px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.login-box { max-width: 380px; margin: 40px auto; }
.header-action { font-size: 14px; }
@media (min-width: 640px) {
  .grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}