:root{--bg: #f5f6f8;--surface: #ffffff;--border: #d8dde4;--border-strong: #b8c0cc;--text: #18202b;--text-dim: #5b6675;--primary: #1f5fbf;--primary-hover: #19498f;--danger: #b3261e;--danger-hover: #8a1d18;--warning-bg: #fff7e0;--warning-border: #e1c266;--ok: #1a7a3e;--mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:system-ui,-apple-system,Segoe UI,Noto Sans TC,sans-serif;font-size:14px;color:var(--text);background:var(--bg)}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.app-shell{min-height:100vh;display:flex;flex-direction:column}.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:12px 24px;display:flex;align-items:center;gap:24px}.topbar h1{font-size:16px;margin:0;font-weight:600}.topbar nav{display:flex;gap:16px;flex:1}.topbar nav a{color:var(--text-dim);padding:4px 8px;border-radius:4px}.topbar nav a.active{color:var(--text);background:#e8edf4;font-weight:500}.topbar .me{color:var(--text-dim);font-size:13px}.topbar button.logout{background:transparent;border:1px solid var(--border-strong);padding:4px 12px;border-radius:4px;cursor:pointer;color:var(--text)}.topbar button.logout:hover{background:#eef1f5}main.content{flex:1;padding:24px;max-width:1200px;width:100%;margin:0 auto}h2.page-title{margin:0 0 16px;font-size:20px;font-weight:600}.toolbar{display:flex;gap:12px;align-items:center;margin-bottom:16px;flex-wrap:wrap}button.primary,button.danger,button.secondary{padding:6px 14px;border-radius:4px;cursor:pointer;font:inherit;border:1px solid transparent}button.primary{background:var(--primary);color:#fff;border-color:var(--primary)}button.primary:hover:not(:disabled){background:var(--primary-hover)}button.danger{background:var(--danger);color:#fff;border-color:var(--danger)}button.danger:hover:not(:disabled){background:var(--danger-hover)}button.secondary{background:var(--surface);color:var(--text);border-color:var(--border-strong)}button.secondary:hover:not(:disabled){background:#eef1f5}button:disabled{opacity:.55;cursor:not-allowed}input[type=text],input[type=password],input[type=date],input[type=datetime-local],input[type=email],select{font:inherit;padding:5px 8px;border:1px solid var(--border-strong);border-radius:4px;background:var(--surface);color:var(--text);min-width:0}label{font-size:13px;color:var(--text-dim);display:flex;flex-direction:column;gap:4px}table.data{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--border);border-radius:4px;overflow:hidden}table.data th,table.data td{text-align:left;padding:8px 12px;border-bottom:1px solid var(--border);font-size:13px;vertical-align:middle}table.data th{background:#eef1f5;font-weight:600;color:var(--text-dim);font-size:12px;text-transform:uppercase;letter-spacing:.04em}table.data tbody tr:last-child td{border-bottom:none}table.data tbody tr:hover{background:#f8f9fb}.row-actions{display:flex;gap:6px;flex-wrap:wrap}.row-actions button{padding:3px 8px;font-size:12px;border-radius:3px;border:1px solid var(--border-strong);background:var(--surface);color:var(--text);cursor:pointer}.row-actions button.danger{border-color:var(--danger);color:var(--danger)}.row-actions button.danger:hover{background:#fde7e6}.row-actions button:hover:not(.danger){background:#eef1f5}.empty{padding:32px;text-align:center;color:var(--text-dim);background:var(--surface);border:1px dashed var(--border-strong);border-radius:4px}.error-banner{background:#fde7e6;color:var(--danger);border:1px solid var(--danger);padding:8px 12px;border-radius:4px;margin-bottom:12px;font-size:13px}.status-pill{display:inline-block;padding:2px 8px;border-radius:10px;font-size:11px;text-transform:uppercase;letter-spacing:.04em;font-weight:600}.status-pill.pending{background:#fff7e0;color:#8a6300}.status-pill.delivered{background:#e2f5ea;color:var(--ok)}.status-pill.failed{background:#fde7e6;color:var(--danger)}.status-pill.active{background:#e2f5ea;color:var(--ok)}.status-pill.disabled{background:#ececec;color:#555}.auth-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg);padding:24px}.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:32px;width:100%;max-width:360px;box-shadow:0 4px 12px #0000000a}.auth-card h1{margin:0 0 24px;font-size:20px;text-align:center;font-weight:600}.auth-card form{display:flex;flex-direction:column;gap:14px}.auth-card label{gap:6px}.auth-card input{padding:8px 10px;font-size:14px}.auth-card button{margin-top:4px;padding:9px 14px;font-size:14px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f162073;display:flex;align-items:center;justify-content:center;padding:24px;z-index:100}.modal{background:var(--surface);border-radius:8px;padding:24px;max-width:520px;width:100%;max-height:calc(100vh - 48px);overflow:auto;box-shadow:0 12px 32px #0000002e}.modal h3{margin:0 0 16px;font-size:16px;font-weight:600}.modal .actions{margin-top:20px;display:flex;gap:8px;justify-content:flex-end}.otp-box{background:var(--warning-bg);border:1px solid var(--warning-border);border-radius:4px;padding:12px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-family:var(--mono);font-size:16px;word-break:break-all}.otp-warning{margin:12px 0 0;color:#8a6300;font-size:13px;line-height:1.5}.filter-bar{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:4px;padding:12px;margin-bottom:16px}.filter-bar .actions{display:flex;align-items:flex-end;gap:8px;grid-column:1 / -1}.loading{padding:24px;text-align:center;color:var(--text-dim)}code.username{font-family:var(--mono)}