:root{--bg: #f4f6fb;--panel: #ffffff;--border: #e2e6ee;--text: #1a1f2b;--dim: #6b7480;--primary: #3b82f6;--danger: #ef4444;--ok: #16a34a}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Segoe UI,system-ui,-apple-system,sans-serif}button{background:var(--primary);color:#fff;border:none;border-radius:8px;padding:9px 16px;font-weight:600;cursor:pointer}button:hover{filter:brightness(.95)}button.ghost{background:#eef1f6;color:var(--text)}button.link{background:none;color:var(--primary);padding:4px;font-weight:500}button.link.danger{color:var(--danger)}input,select{border:1px solid var(--border);border-radius:8px;padding:9px 11px;font-size:14px;font-family:inherit;background:#fff;color:var(--text)}input:focus,select:focus{outline:none;border-color:var(--primary)}.dim{color:var(--dim)}.err{color:var(--danger);font-weight:600}.ok{color:var(--ok);font-weight:600}.mono{font-family:ui-monospace,monospace}.num{text-align:right}.center{min-height:100vh;display:flex;align-items:center;justify-content:center;flex-direction:column}.auth-card{width:360px;background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:32px;display:flex;flex-direction:column;gap:14px;box-shadow:0 8px 30px #141e3214}.auth-card h1{margin:0;font-size:26px}.auth-card label{display:flex;flex-direction:column;gap:5px;font-size:13px;color:var(--dim)}.shell{min-height:100vh}.topbar{height:60px;background:var(--panel);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:14px;padding:0 22px}.topbar .brand{font-size:20px;font-weight:800}.spacer{flex:1}main{padding:26px;max-width:1100px;margin:0 auto}.page h2{margin:0 0 18px}.add-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}.add-row .w80{width:90px}.data-table{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--border);border-radius:12px;overflow:hidden}.data-table th,.data-table td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--border);font-size:14px}.data-table th{color:var(--dim);font-size:12px;text-transform:uppercase;letter-spacing:.4px}.data-table tr:last-child td{border-bottom:none}.topnav{display:flex;gap:6px;margin-left:24px}.tab{background:transparent;color:var(--dim);padding:8px 14px;border-radius:8px;font-weight:600}.tab.active{background:var(--primary);color:#fff}.tab:hover:not(.active){background:#eef1f6;color:var(--text)}