.spr-back{align-self:flex-start;margin-bottom:16px}.spr-topbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:16px;display:flex}.spr-topbar .spr-back{margin-bottom:0}.spr-label{letter-spacing:.5px;text-transform:uppercase;color:var(--navy-2);align-items:center;gap:6px;font-size:11.5px;font-weight:800;display:inline-flex}.spr-label.spr-ok{color:#1f8c4d}.spr-pw{flex-direction:column;gap:14px;max-width:700px;display:flex}.spr-pw-head h1{color:var(--navy);letter-spacing:-.2px;margin:0;font-size:23px;font-weight:800}.spr-pw-sub{color:var(--muted);margin:6px 0 2px;font-size:14px;line-height:1.5}.spr-block{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow-sm);border-radius:14px;padding:16px 18px}.spr-block .spr-label{margin-bottom:9px}.spr-body{color:var(--ink);margin:0;font-size:14.5px;line-height:1.65}.spr-block-prompt{background:var(--soft-blue);border-color:#d8e2fb;border-left:4px solid var(--vus-blue)}.spr-block-prompt .spr-body{color:var(--navy);font-weight:500}.spr-block-tip{background:var(--soft-red);border-color:#ffd9de;border-left:4px solid var(--vus-red)}.spr-chart-btn{border:1px solid var(--line);cursor:zoom-in;background:#fbfcfe;border-radius:12px;width:100%;max-width:440px;margin:0 auto;padding:0;display:block;position:relative;overflow:hidden}.spr-chart-frame{justify-content:center;align-items:center;width:100%;height:240px;padding:10px;display:flex}.spr-chart{object-fit:contain;width:auto;max-width:100%;height:auto;max-height:100%;display:block}.spr-zoom-hint{color:#fff;background:#0b1f4da8;border-radius:999px;align-items:center;gap:4px;padding:4px 9px;font-size:11px;font-weight:700;display:inline-flex;position:absolute;bottom:8px;right:8px}.spr-zoom-modal{width:100%;max-width:920px;box-shadow:var(--shadow);background:#fff;border-radius:14px;padding:14px;position:relative}.spr-zoom-modal img{border-radius:8px;width:100%;display:block}.spr-steps{counter-reset:spr;flex-direction:column;gap:11px;margin:0;padding:0;list-style:none;display:flex}.spr-steps li{color:var(--ink);align-items:flex-start;gap:11px;line-height:1.55;display:flex}.spr-step-num{background:var(--vus-blue);color:#fff;border-radius:50%;flex-shrink:0;place-items:center;width:23px;height:23px;margin-top:1px;font-size:12px;font-weight:800;display:grid}.spr-step-txt{color:var(--ink)}.spr-start{align-self:stretch;margin-top:4px}.spr-stepper{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow-sm);border-radius:12px;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:16px;padding:10px 14px;display:flex}.spr-step{color:var(--muted);align-items:center;gap:6px;font-size:12.5px;font-weight:700;display:inline-flex}.spr-step-dot{width:23px;height:23px;color:var(--muted);background:#eef1f6;border-radius:50%;place-items:center;font-size:12px;font-weight:800;display:grid}.spr-step-count{color:var(--vus-red);background:var(--soft-red);border-radius:999px;margin-left:auto;padding:4px 11px;font-size:12px;font-weight:800}.spr-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);align-items:start;gap:18px;display:grid}.spr-coach,.spr-write{flex-direction:column;gap:14px;min-width:0;display:flex}.spr-coach{max-height:calc(100vh - 96px);padding-right:4px;position:sticky;top:84px;overflow-y:auto}.spr-ref{flex-direction:column;gap:10px;display:flex}.spr-ref-prompt{background:var(--soft-blue);border:1px solid #d8e2fb;border-left:4px solid var(--vus-blue);border-radius:12px;padding:11px 13px}.spr-ref-prompt summary{cursor:pointer;letter-spacing:.5px;text-transform:uppercase;color:var(--navy-2);align-items:center;gap:6px;font-size:11.5px;font-weight:800;list-style:none;display:flex}.spr-ref-prompt summary::-webkit-details-marker{display:none}.spr-ref-prompt p{color:var(--navy);margin:8px 0 0;font-size:13.5px;line-height:1.55}.spr-card{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow-sm);border-radius:14px;flex-direction:column;gap:11px;padding:16px;display:flex}.spr-card p{color:var(--ink);margin:0;font-size:14.5px;line-height:1.65}.spr-theory{border-color:#d8e6fa;border-left:4px solid var(--vus-blue);background:#f4f8ff}.spr-guide{border-left:4px solid var(--vus-red)}.spr-guide-hint{background:var(--soft-blue);color:var(--navy);border:1px solid #d8e2fb;border-radius:10px;align-items:flex-start;gap:7px;padding:9px 11px;font-size:13.5px;line-height:1.55;display:flex}.spr-quiz-q{color:var(--ink);font-size:14.5px;font-weight:700;line-height:1.55}.spr-options{flex-direction:column;gap:7px;display:flex}.spr-opt{text-align:left;border:1.5px solid var(--line);cursor:pointer;color:var(--ink);background:#fff;border-radius:10px;align-items:center;gap:9px;padding:10px 12px;font-size:14px;line-height:1.45;transition:border-color .12s,background .12s;display:flex}.spr-opt:hover:not(:disabled){border-color:var(--vus-blue)}.spr-opt-mk{width:22px;height:22px;color:var(--muted);background:#eef1f6;border-radius:50%;flex-shrink:0;place-items:center;font-size:11.5px;font-weight:800;display:grid}.spr-quiz-wrong{color:var(--vus-red-dark);font-size:13px}.spr-quiz-explain{color:#15693f;background:#eef9f2;border:1px solid #bfe6cd;border-radius:10px;align-items:flex-start;gap:7px;padding:9px 11px;font-size:13.5px;line-height:1.55;display:flex}.spr-essaybuild{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow-sm);border-radius:14px;padding:14px 16px}.spr-eb-head{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.spr-eb-count{color:var(--vus-blue);background:var(--soft-blue);border-radius:999px;padding:3px 10px;font-size:11.5px;font-weight:800}.spr-eb-empty{color:var(--muted);margin:0;font-size:13.5px;font-style:italic;line-height:1.55}.spr-eb-body{flex-direction:column;gap:13px;display:flex}.spr-eb-sec{flex-direction:column;gap:5px;display:flex}.spr-eb-sec-lbl{text-transform:uppercase;letter-spacing:.4px;color:var(--navy-2);font-size:11px;font-weight:800}.spr-acc-sen{color:var(--ink);margin:0;font-size:14.5px;line-height:1.6}.spr-write-card{border:1.5px solid var(--line-strong)}.spr-input-head{color:var(--navy);justify-content:space-between;align-items:center;font-size:14px;font-weight:800;display:flex}.spr-wc{color:var(--muted);background:#eef1f6;border-radius:999px;padding:3px 9px;font-size:12px;font-weight:700}.spr-input{border:1.5px solid var(--line-strong);resize:vertical;width:100%;color:var(--ink);border-radius:11px;outline:none;padding:11px 13px;font-family:inherit;font-size:15px;line-height:1.6}.spr-input:focus{border-color:var(--vus-red);box-shadow:0 0 0 3px var(--soft-red)}.spr-input:disabled{color:#44506a;background:#f7f9fc}.spr-sample-box{background:var(--soft-blue);border-left:3px solid var(--vus-blue);color:var(--navy);border-radius:8px;margin-top:7px;padding:9px 11px;font-size:14px;line-height:1.55}.spr-locked{color:var(--muted);border:1px dashed var(--line-strong);background:#f6f8fc;border-radius:12px;align-items:center;gap:8px;padding:13px 14px;font-size:13px;display:flex}.spr-feedback{border:1px solid var(--line);background:#fbfcfe;border-radius:12px;flex-direction:column;gap:9px;padding:13px;display:flex}.spr-fb-head{align-items:center;gap:6px;font-size:14px;font-weight:800;display:inline-flex}.spr-fb-comment{color:var(--ink);margin:0;font-size:14px;line-height:1.6}.spr-issues{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.spr-issues li{grid-template-columns:auto 1fr;align-items:baseline;gap:3px 8px;display:grid}.spr-issue-tag{border-radius:6px;grid-row:span 2;align-self:start;padding:2px 6px;font-size:10px;font-weight:800}.spr-issue-fix{font-size:14px}.spr-issue-fix s{color:#c0392b}.spr-issue-fix b{color:#15693f}.spr-issue-note{color:var(--muted);grid-column:2;font-size:12.5px;line-height:1.45}.spr-fb-corrected{color:#1f3a2c;background:#eef9f2;border-radius:10px;padding:9px 11px;font-size:14.5px;line-height:1.6}.spr-fb-corrected span{color:#15693f;text-transform:uppercase;letter-spacing:.3px;margin-bottom:3px;font-size:11px;font-weight:800;display:block}.spr-fb-actions{justify-content:flex-end;gap:10px;margin-top:2px;display:flex}.spr-done-head{margin-bottom:16px}.spr-done-grid{grid-template-columns:minmax(0,1.45fr) minmax(280px,1fr);align-items:stretch;gap:18px;display:grid}.spr-essay-block{flex-direction:column;gap:12px;display:flex}.spr-essay-top{justify-content:space-between;align-items:center;display:flex}.spr-essay{background:var(--soft-blue);color:var(--ink);border:1px solid #d8e2fb;border-radius:12px;flex:1;padding:16px 18px;font-size:15px;line-height:1.75}.spr-essay p{margin:0 0 12px}.spr-essay p:last-child{margin:0}.spr-done-actions{flex-wrap:wrap;gap:10px;display:flex}.spr-grade-note{color:var(--vus-blue);background:var(--soft-blue);border-radius:10px;align-items:center;gap:7px;margin:0;padding:9px 12px;font-size:13px;line-height:1.5;display:flex}.spr-grade-err{flex-direction:column;align-items:flex-start;gap:6px;display:flex}.spr-related{flex-direction:column;gap:11px;display:flex}.spr-related-list{flex-direction:column;gap:4px;display:flex}.spr-related-card{border-radius:10px;align-items:center;gap:11px;padding:8px;transition:background .12s;display:flex}.spr-related-card:hover{background:var(--soft-blue)}.spr-related-thumb{object-fit:cover;border:1px solid var(--line);background:#eef1f6;border-radius:8px;flex-shrink:0;width:64px;height:48px}.spr-related-thumb-ph{background:var(--soft-blue);color:var(--vus-blue);place-items:center;display:grid}.spr-related-txt{flex-direction:column;gap:4px;min-width:0;display:flex}.spr-related-tags{flex-wrap:wrap;gap:5px;display:flex}.spr-related-title{color:var(--ink);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:13px;font-weight:600;line-height:1.4;display:-webkit-box;overflow:hidden}@media (max-width:900px){.spr-coach{max-height:none;position:static;overflow:visible}}