:root{color-scheme:light dark;--bg: #0f172a;--card: #1e293b;--fg: #e2e8f0;--muted: #94a3b8;--accent: #38bdf8;--border: #334155}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Noto Sans TC,Microsoft JhengHei,sans-serif;background:var(--bg);color:var(--fg);-webkit-font-smoothing:antialiased}.app{max-width:960px;margin:0 auto;padding:16px}header.bar{display:flex;align-items:center;justify-content:space-between;padding:8px 0 16px;border-bottom:1px solid var(--border);margin-bottom:16px}header.bar h1{font-size:18px;margin:0}button{background:var(--accent);color:#0b1220;border:0;border-radius:8px;padding:10px 16px;font-size:15px;font-weight:600;cursor:pointer}button.ghost{background:transparent;color:var(--muted);border:1px solid var(--border)}.center{min-height:60vh;display:grid;place-items:center;text-align:center}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px;margin-bottom:12px}.card h2{font-size:15px;margin:0 0 8px;color:var(--accent)}.muted{color:var(--muted);font-size:13px}.err{color:#fca5a5;font-size:13px;white-space:pre-wrap}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:4px 8px;border-bottom:1px solid var(--border)}th{color:var(--muted);font-weight:600}header.bar>div{display:flex;gap:8px}.nav{display:flex;gap:6px;overflow-x:auto;margin-bottom:12px}.nav button{background:transparent;color:var(--muted);border:1px solid var(--border);padding:7px 14px;font-size:14px;white-space:nowrap}.nav button.active{background:var(--accent);color:#0b1220;border-color:var(--accent)}.row-between{display:flex;align-items:center;justify-content:space-between;gap:8px}select{background:var(--bg);color:var(--fg);border:1px solid var(--border);border-radius:8px;padding:6px 10px;font-size:14px}.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}.stat{background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:12px}.stat-title{font-size:13px;color:var(--muted)}.stat-num{font-size:22px;font-weight:700;margin:4px 0}