:root{--bg:#f5f7fb;--card:#fff;--text:#152238;--muted:#718096;--line:#e7ebf2;--primary:#2563eb;--danger:#d64545;--shadow:0 8px 30px rgba(29,45,73,.06)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.5 Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}.app-shell{display:flex;min-height:100vh}.sidebar{width:240px;background:#101a2d;color:#dbe5f5;padding:24px 16px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;margin:0 8px 38px}.brand-mark{display:inline-flex;width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,#3b82f6,#22c55e);color:white;align-items:center;justify-content:center;font-weight:800}.nav-item{display:block;width:100%;border:0;background:transparent;color:#aebbd0;text-align:left;padding:12px 14px;border-radius:8px;margin:4px 0;cursor:pointer;font-size:14px}.nav-item:hover,.nav-item.active{background:#203250;color:#fff}.logout{margin-top:auto;color:#aebbd0;text-decoration:none;padding:12px 14px}.main{flex:1;padding:30px 38px;max-width:1500px}.topbar{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:26px}.topbar h1{margin:0 0 4px;font-size:26px}.muted{color:var(--muted);margin:0}.refresh,.export,.link-button{border:1px solid var(--line);background:#fff;color:var(--primary);border-radius:7px;padding:9px 14px;cursor:pointer}.stats-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:14px;margin-bottom:20px}.stat-card,.panel{background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}.stat-card{padding:18px}.stat-card span{display:block;color:var(--muted);font-size:13px;margin-bottom:12px}.stat-card strong{font-size:24px}.stat-card.warn strong{color:var(--danger)}.grid-2{display:grid;grid-template-columns:1.5fr 1fr;gap:20px}.panel{padding:20px}.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.panel h2{font-size:17px;margin:0}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;min-width:520px}th,td{text-align:left;padding:12px 10px;border-bottom:1px solid var(--line);white-space:nowrap}th{color:var(--muted);font-size:12px;font-weight:600}.status{display:inline-block;padding:3px 8px;border-radius:20px;background:#eef2f7;color:#607087;font-size:12px}.status-processing,.status-completed{background:#dcfce7;color:#15803d}.status-pending,.status-on-hold{background:#fef3c7;color:#a16207}.status-cancelled,.status-failed,.status-refunded{background:#fee2e2;color:#b91c1c}.alert-list{display:flex;flex-direction:column;gap:10px}.alert-row{display:flex;justify-content:space-between;padding:11px 12px;border-radius:8px;background:#fff7ed;color:#9a3412}.low td{background:#fffaf5}.empty{color:var(--muted);text-align:center;padding:24px}.alert{padding:12px 15px;border-radius:8px;margin-bottom:18px;background:#fee2e2;color:#991b1b}.alert.success{background:#dcfce7;color:#166534}.login-wrap{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#edf5ff,#f8fbff)}.login-card{width:min(420px,calc(100% - 32px));background:#fff;padding:34px;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.login-card h1{margin:18px 0 4px}.login-card label{display:block;margin-top:18px;font-weight:600}.login-card input{display:block;width:100%;margin-top:7px;border:1px solid #d7deea;border-radius:7px;padding:11px;font-size:15px}.primary{background:var(--primary);color:#fff;border:0;border-radius:7px;padding:12px 16px;cursor:pointer}.full{width:100%;margin-top:24px}.hidden{display:none}@media(max-width:1100px){.stats-grid{grid-template-columns:repeat(3,1fr)}}@media(max-width:720px){.sidebar{width:72px;padding:16px 8px}.brand span:last-child,.nav-item{font-size:0}.nav-item{text-align:center}.logout{font-size:0}.main{padding:20px 14px}.stats-grid{grid-template-columns:repeat(2,1fr)}.grid-2{grid-template-columns:1fr}.topbar{align-items:center}.topbar h1{font-size:21px}}