:root {
  --ink: #1c1c1e; --sub: #6e6e73; --line: #e5e5ea;
  --gold: #b8945f; --gold-deep: #96733e; --bg: #f7f6f3; --card: #ffffff;
}
* { box-sizing: border-box; margin: 0; }
body { font-family: "PingFang TC", "Noto Sans TC", sans-serif;
  background: var(--bg); color: var(--ink); -webkit-font-smoothing: antialiased; }
.wrap { max-width: 560px; margin: 0 auto; padding: 24px 20px 48px; }
.hero { text-align: center; padding: 20px 0 24px; }
.brand { font-size: 14px; letter-spacing: .4em; color: var(--gold-deep); }
h1 { font-size: 26px; font-weight: 600; margin-top: 6px; }
.tagline { color: var(--sub); font-size: 14px; margin-top: 8px; }
.greeting { margin-top: 14px; font-size: 15px; color: var(--gold-deep); }
h2 { font-size: 18px; margin-bottom: 14px; }
section { background: var(--card); border: 1px solid var(--line);
  border-radius: 16px; padding: 22px 18px; margin-bottom: 16px; }
.building-badge { font-weight: 600; color: var(--gold-deep);
  border-bottom: 1px solid var(--line); padding-bottom: 12px; margin-bottom: 16px; }
.tabs { display: flex; gap: 8px; margin-bottom: 18px; }
.tabs label { flex: 1; }
.tabs input { display: none; }
.tabs span { display: block; text-align: center; padding: 10px 0;
  border: 1px solid var(--line); border-radius: 10px; font-size: 15px; color: var(--sub); }
.tabs input:checked + span { border-color: var(--gold);
  color: var(--gold-deep); background: #faf6ef; font-weight: 600; }
fieldset { border: 0; padding: 0; }
form label, #building-picker label { display: block; font-size: 14px;
  color: var(--sub); margin-bottom: 14px; }
input, select { width: 100%; margin-top: 6px; padding: 12px;
  border: 1px solid var(--line); border-radius: 10px; font-size: 16px;
  background: #fff; color: var(--ink); }
.row2 { display: flex; gap: 12px; }
.row2 label { flex: 1; }
.btn { width: 100%; padding: 14px; border: 0; border-radius: 12px;
  font-size: 17px; font-weight: 600; cursor: pointer; }
.btn.primary { background: linear-gradient(135deg, var(--gold), var(--gold-deep)); color: #fff; }
.note { font-size: 13px; color: var(--sub); text-align: center; margin-top: 12px; }
.switch-building { text-align: center; margin-top: 14px; font-size: 13px; }
.switch-building a { color: var(--sub); }
#done-panel { text-align: center; padding: 40px 20px; }
#fallback-note { margin-top: 16px; font-size: 14px; }
#fallback-note a { color: var(--gold-deep); font-weight: 600; }