:root{--bg: #f5f7fa;--panel: #ffffff;--ink: #1c2733;--muted: #6b7a89;--brand: #123a63;--brand-2: #1f6feb;--danger: #b42318;--border: #dfe4ea}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft JhengHei,PingFang TC,sans-serif;background:var(--bg);color:var(--ink);line-height:1.45}.app{display:flex;flex-direction:column;min-height:100dvh}.page{padding:14px 16px calc(72px + env(safe-area-inset-bottom))}.topbar{position:sticky;top:0;display:flex;align-items:center;justify-content:space-between;background:var(--brand);color:#fff;padding:12px 16px;z-index:10}.topbar-brand{display:flex;flex-direction:column}.topbar-brand strong{font-size:16px}.topbar .muted{color:#cfe0f0;font-size:12px}.tabbar{position:fixed;left:0;right:0;bottom:0;display:flex;background:var(--panel);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom);z-index:20}.tabbar .tab{flex:1}.screen.center{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100dvh;padding:20px;text-align:center}.title{font-size:20px;margin:6px 0 12px}.subtitle{font-size:16px;margin:18px 0 8px}.muted{color:var(--muted)}.error{color:var(--danger);margin:8px 0}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:12px 14px;margin:8px 0}.pane{padding:16px}.list{list-style:none;margin:8px 0;padding:0;display:flex;flex-direction:column;gap:8px}.list li{cursor:pointer}.timeline{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.row{display:flex;align-items:center;gap:10px}.spread{justify-content:space-between}.chevron{color:var(--muted);font-size:20px}.tabs{display:flex;margin-bottom:14px;border-bottom:1px solid var(--border)}.tab{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;background:transparent;color:var(--muted);font-size:14px;padding:10px 8px;border-bottom:2px solid transparent;cursor:pointer}.tab.active{color:var(--brand);border-bottom-color:var(--brand);font-weight:600}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid transparent;border-radius:10px;padding:10px 16px;font-size:14px;cursor:pointer}.btn.primary{background:var(--brand-2);color:#fff}.btn.ghost{background:transparent;border-color:var(--border);color:var(--ink)}.btn:disabled{opacity:.6;cursor:default}.field{display:flex;flex-direction:column;gap:4px;margin:10px 0}.label{font-size:13px;color:var(--muted)}input,select,textarea{width:100%;padding:10px;font-size:15px;border:1px solid var(--border);border-radius:10px;background:#fff}.search{margin:10px 0}