:root{--bg:#f5f7fb;--panel:#fff;--ink:#111827;--muted:#6b7280;--line:#e5e7eb;--brand:#111827;--soft:#eef2ff;--ok:#0f766e;--warn:#b45309;--bad:#b91c1c}*{box-sizing:border-box}body,html{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,Noto Sans TC,system-ui,sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}a{text-decoration:none;color:inherit}.shell{max-width:760px;margin:0 auto;min-height:100vh;padding-bottom:88px}.topbar{position:-webkit-sticky;position:sticky;top:0;z-index:20;background:rgba(245,247,251,.94);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:16px 18px;border-bottom:1px solid var(--line)}.brandline,.row{display:flex;align-items:center;justify-content:space-between;gap:12px}.title{font-size:20px;font-weight:800}.muted{color:var(--muted);font-size:13px}.content{padding:16px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:12px;gap:12px}.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:16px}.big{font-size:28px;font-weight:800}.section{margin:18px 0}.section h2{font-size:17px;margin:0 0 10px}.stack{display:grid;grid-gap:10px;gap:10px}.pill{display:inline-flex;padding:4px 9px;border-radius:999px;font-size:12px;background:var(--soft);font-weight:700}.pill.ok{background:#ecfdf5;color:var(--ok)}.pill.warn{background:#fff7ed;color:var(--warn)}.pill.bad{background:#fef2f2;color:var(--bad)}.btn{border:0;border-radius:12px;padding:11px 14px;background:var(--brand);color:white;font-weight:750}.btn.secondary{background:white;color:var(--ink);border:1px solid var(--line)}.btn.danger{background:var(--bad)}.btn:disabled{opacity:.5}.field{display:grid;grid-gap:6px;gap:6px}.field input,.field select,.field textarea,input,select,textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:12px;background:white}.bottomnav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:min(760px,100%);display:grid;grid-template-columns:repeat(5,1fr);background:white;border-top:1px solid var(--line);padding:8px 4px;z-index:30}.navitem{text-align:center;font-size:11px;color:var(--muted);padding:5px}.navitem strong{display:block;font-size:19px;color:var(--ink)}.login{min-height:100vh;display:grid;place-items:center;padding:24px}.loginbox{width:min(440px,100%);background:white;border:1px solid var(--line);border-radius:22px;padding:24px}.error{padding:10px 12px;background:#fef2f2;color:var(--bad);border-radius:12px}.notice{padding:12px;border-left:4px solid #6366f1;background:#eef2ff;border-radius:10px}.listitem{padding:12px 0;border-bottom:1px solid var(--line)}.listitem:last-child{border-bottom:0}.offline{position:-webkit-sticky;position:sticky;top:73px;z-index:19;margin:0 12px;padding:9px 12px;background:#fff7ed;color:#9a3412;border:1px solid #fed7aa;border-radius:10px;font-size:12px}.qr-video{width:100%;max-height:320px;object-fit:cover;border-radius:14px;background:#111827}.countdown{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-size:20px;font-weight:850}