:root{--blue: #2563eb;--blue-dark: #1d4ed8;--green: #16a34a;--red: #dc2626;--gray: #6b7280;--bg: #f1f5f9;--card: #ffffff;--border: #e2e8f0;--text: #0f172a}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{margin:0;font-family:-apple-system,PingFang SC,Microsoft YaHei,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}button{font-family:inherit;cursor:pointer}.app{max-width:900px;margin:0 auto;padding:16px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 4px;margin-bottom:12px}.topbar h1{font-size:20px;margin:0}.topbar .sub{color:var(--gray);font-size:13px}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px;margin-bottom:14px}.grid{display:grid;gap:12px}.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:1fr 1fr 1fr}.btn{border:1px solid var(--border);background:#fff;color:var(--text);border-radius:12px;padding:16px;font-size:17px;font-weight:600;transition:transform .05s ease}.btn:active{transform:scale(.97)}.btn-primary{background:var(--blue);color:#fff;border-color:var(--blue)}.btn-primary:active{background:var(--blue-dark)}.btn-green{background:var(--green);color:#fff;border-color:var(--green)}.btn-danger{background:#fff;color:var(--red);border-color:var(--red)}.btn-ghost{background:transparent;border-color:transparent;color:var(--gray)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn.selected{outline:3px solid var(--blue);outline-offset:1px}.btn-lg{padding:22px;font-size:19px}.btn-sm{padding:8px 12px;font-size:14px;border-radius:9px}label.field{display:block;margin-bottom:14px}label.field>span{display:block;font-size:14px;color:var(--gray);margin-bottom:6px}input,select{width:100%;padding:14px;font-size:17px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text)}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.spacer{flex:1}.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600}.pill-teaching{background:#dbeafe;color:#1e40af}.pill-marking{background:#fef3c7;color:#92400e}.pill-admin{background:#e5e7eb;color:#374151}.pill-bonus{background:#dcfce7;color:#166534}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:9px 8px;border-bottom:1px solid var(--border)}th{color:var(--gray);font-weight:600}.muted{color:var(--gray)}.center{text-align:center}.big-num{font-size:40px;font-weight:700;letter-spacing:1px}.error{color:var(--red);font-size:14px;margin-top:8px}.ok{color:var(--green)}.hours-badge{font-size:28px;font-weight:700;color:var(--blue)}.pinpad{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;max-width:280px;margin:0 auto}.pinpad .btn{padding:20px;font-size:22px}.pin-dots{font-size:32px;letter-spacing:10px;text-align:center;height:40px}.tabs{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap}.tab{padding:10px 16px;border-radius:10px;border:1px solid var(--border);background:#fff;font-weight:600}.tab.active{background:var(--blue);color:#fff;border-color:var(--blue)}.banner{padding:8px 12px;border-radius:8px;font-size:13px;margin-bottom:12px}.banner-warn{background:#fef3c7;color:#92400e}