:root{--bg:#f7f5ef;--panel:#fff;--ink:#1f2a37;--muted:#6b7280;--line:#e5e7eb;--brand:#f4a000;--brand-soft:#fff4d8;--danger:#d94a45;--warn:#c98a05;--ok:#4b8f6a}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font-family:Inter,PingFang SC,Microsoft YaHei,sans-serif}button,input,a{font:inherit}button,.nav-link{border:1px solid var(--line);color:var(--ink);cursor:pointer;background:#fff;border-radius:8px;align-items:center;gap:7px;min-height:36px;padding:0 12px;text-decoration:none;display:inline-flex}button:disabled{opacity:.45;cursor:not-allowed}.primary{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:700}.ghost-button{color:var(--muted)}.login-shell{place-items:center;min-height:100vh;padding:24px;display:grid}.login-panel{gap:12px;width:min(360px,100%);display:grid}.login-panel h1{text-transform:lowercase;margin:0 0 12px;font-size:28px;font-weight:800;line-height:1.1}.login-panel input{border:1px solid var(--line);background:#fff;border-radius:8px;outline:0;width:100%;height:42px;padding:0 12px}.login-panel input:focus{border-color:var(--brand)}.login-panel button{justify-content:center;width:100%;min-height:42px}.login-panel b{min-height:18px;color:var(--danger);font-size:13px}.app-shell{grid-template-columns:84px 1fr;min-height:100vh;display:grid}.sidebar{color:#fff;background:#161b22;flex-direction:column;gap:12px;padding:18px 10px;display:flex}.brand-mark{color:var(--brand);letter-spacing:.08em;text-align:center;margin-bottom:18px;font-size:12px;font-weight:800}.nav-button,.nav-link{justify-content:center;width:100%;padding:0;font-size:12px}.nav-button.active{background:var(--brand);border-color:var(--brand);color:#fff}.workspace{padding:18px}.topbar{justify-content:space-between;align-items:center;height:62px;margin-bottom:14px;display:flex}.topbar h1{margin:0;font-size:24px;line-height:1.2}.topbar span{color:var(--muted);font-size:13px}.top-actions{align-items:center;gap:10px;display:flex}.top-actions input{border:1px solid var(--line);border-radius:8px;width:260px;height:36px;padding:0 10px}.layout{grid-template-columns:240px minmax(0,1fr) 280px;align-items:start;gap:14px;display:grid}.history-panel,.data-panel,.detail-panel{background:var(--panel);border:1px solid var(--line);border-radius:8px;min-height:680px}.panel-head{border-bottom:1px solid var(--line);height:44px;color:var(--muted);justify-content:space-between;align-items:center;gap:10px;padding:0 14px;font-size:13px;font-weight:700;display:flex}.history-search{border:1px solid var(--line);background:#fff;border-radius:7px;grid-template-columns:18px 1fr;align-items:center;width:96px;height:28px;padding:0 6px;display:grid}.history-search input{border:0;outline:0;width:100%;min-width:0}.batch-list{gap:8px;padding:12px;display:grid}.batch-item{border:1px solid var(--line);background:#fff;border-radius:8px;grid-template-columns:minmax(0,1fr) 34px;gap:4px;min-height:66px;display:grid;overflow:hidden}.batch-open{text-align:left;background:0 0;border:0;border-radius:0;grid-template-columns:minmax(0,1fr) auto;justify-content:stretch;gap:5px;width:100%;min-height:64px;padding:10px 0 10px 10px;display:grid}.batch-open strong{text-overflow:ellipsis;white-space:nowrap;grid-column:1/-1;font-size:13px;overflow:hidden}.batch-open span{color:var(--muted);font-size:12px}.batch-open em{color:var(--brand);font-size:12px;font-style:normal;font-weight:700}.batch-delete{width:28px;min-height:28px;color:var(--muted);justify-content:center;align-self:center;padding:0}.batch-delete:not(:disabled):hover{color:var(--danger);background:#fff5f4;border-color:#d94a4573}.batch-item.selected{border-color:var(--brand);background:var(--brand-soft)}.batch-item.selected .batch-open{background:var(--brand-soft)}.toolbar{border-bottom:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:8px;min-height:52px;padding:8px 12px;display:flex}.refresh-button{margin-left:auto}.status-strip{min-height:38px;color:var(--muted);border-bottom:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:18px;padding:8px 12px;font-size:13px;display:flex}.status-strip b{color:var(--ink);font-weight:700}.spin-icon{animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.job-panel{border-bottom:1px solid var(--line);background:#fffdfa;padding:10px 12px 12px}.job-panel.active{background:linear-gradient(#fffdfa,#fff8e8)}.job-line{grid-template-columns:1fr auto auto;align-items:center;gap:10px;font-size:13px;display:grid}.job-state{color:var(--ink);align-items:center;gap:6px;font-weight:700;display:inline-flex}.job-line strong{color:var(--brand)}.job-line em{min-width:36px;color:var(--muted);text-align:right;font-style:normal}.progress-track{background:#edeff2;border-radius:999px;height:8px;margin-top:9px;overflow:hidden}.progress-track i{border-radius:inherit;background:linear-gradient(90deg, var(--brand), #ffcf5a);min-width:6px;height:100%;transition:width .28s;display:block}.job-steps{grid-template-columns:repeat(3,1fr);gap:6px;margin-top:9px;display:grid}.job-steps span{min-height:24px;color:var(--muted);background:#f3f4f6;border-radius:999px;justify-content:center;align-items:center;font-size:12px;display:inline-flex}.job-steps .done{color:var(--ok);background:#e9f5ee;font-weight:700}.job-panel p{color:var(--muted);margin:8px 0 0;font-size:12px}.table-wrap{max-height:590px;overflow:auto}table{border-collapse:collapse;width:100%;font-size:13px}th,td{border-bottom:1px solid var(--line);vertical-align:top;border-right:1px solid #f0f1f3;padding:6px}th{z-index:1;color:var(--muted);white-space:nowrap;background:#fafafa;font-size:12px;font-weight:700;position:sticky;top:0}td input{background:0 0;border:1px solid #0000;border-radius:6px;width:92px;height:30px;padding:0 7px}td input:disabled{color:var(--ink)}td input:focus{border-color:var(--brand);background:#fff;outline:none}th.wide-col,td:nth-child(12) input{min-width:180px}.active-row td{background:#fffaf0}.cell-error input{background:#fff5f4;border-color:#d94a458c}.cell-warning input{background:#fff9e8;border-color:#c98a058c}td small{color:var(--danger);margin-top:3px;font-size:11px;display:block}.row-status{min-height:24px;color:var(--muted);background:#f3f4f6;border-radius:999px;align-items:center;padding:0 8px;font-size:12px;display:inline-flex}.row-status.valid{color:var(--ok);background:#e9f5ee}.row-status.warning{color:var(--warn);background:#fff4d8}.row-status.error{color:var(--danger);background:#fde8e6}.row-status.draft{color:var(--muted);background:#f3f4f6}.icon-button{justify-content:center;width:30px;min-height:30px;padding:0}.detail-panel{overflow:hidden}.student-card{padding:14px}.student-card h2{margin:0 0 6px;font-size:20px}.student-card p{color:var(--muted);margin:0 0 14px}.metric-grid{border-top:1px solid var(--line);grid-template-columns:1fr auto;gap:10px;padding-top:12px;display:grid}.metric-grid span{color:var(--muted)}.issue-list{border-top:1px solid var(--line);flex-wrap:wrap;gap:6px;margin-top:12px;padding-top:12px;display:flex}.issue-list span{border-radius:999px;padding:4px 8px;font-size:12px}.issue-list .error{color:var(--danger);background:#fde8e6}.issue-list .warning{color:var(--warn);background:#fff4d8}.student-download{background:var(--brand);color:#fff;border-radius:8px;align-items:center;gap:7px;min-height:34px;margin-top:14px;padding:0 12px;font-size:13px;font-weight:700;text-decoration:none;display:inline-flex}.reports-head{border-top:1px solid var(--line)}.report-list{gap:8px;padding:12px;display:grid}.report-list a{border:1px solid var(--line);min-height:34px;color:var(--ink);border-radius:8px;grid-template-columns:18px 1fr;align-items:center;gap:8px;padding:7px 9px;font-size:12px;text-decoration:none;display:grid}.report-list .download-all{border-color:var(--brand);background:var(--brand-soft);font-weight:700}@media (width<=1180px){.app-shell{grid-template-columns:1fr}.sidebar{flex-direction:row;align-items:center;min-height:56px}.brand-mark{margin:0 10px 0 0}.nav-button,.nav-link{width:auto;padding:0 12px}.layout{grid-template-columns:1fr}.history-panel,.data-panel,.detail-panel{min-height:auto}}