*{box-sizing:border-box}body{margin:0;background:#f5f7fb;color:#111827}.shell{min-height:100vh}.sidebar{background:#fff!important;border-right:1px solid #e5e7eb}.brand{height:72px;display:flex;align-items:center;gap:12px;padding:0 20px;border-bottom:1px solid #eef0f4}.brand-mark{width:36px;height:36px;border-radius:8px;display:grid;place-items:center;background:#111827;color:#fff;font-weight:700;font-size:13px}.brand span{display:block;font-size:12px;color:#6b7280;margin-top:2px}.topbar{height:72px;background:#fff;border-bottom:1px solid #e5e7eb;display:flex;justify-content:space-between;align-items:center;padding:0 24px}.topbar .ant-typography{margin:0}.content{padding:24px}.notice{margin-bottom:18px}.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-bottom:18px}.login{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(180deg,#f8fafc,#eef2f7)}.login-card{flex:0 1 420px;width:100%;max-width:100%}.login-form{margin-top:24px}.license-result{margin-top:16px}.wide-stack{width:100%}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 16px}@media(max-width:900px){.metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.form-grid{grid-template-columns:1fr}}@media(max-width:480px){.login{padding:20px}}