:root{--bg:#fafaf9;--surface:#fff;--border:#e5e5e4;--text:#1c1917;--text-secondary:#78716c;--accent:#0f766e;--accent-light:#ccfbf1;--accent-hover:#0d9488;--danger:#dc2626;--l1:#3b82f6;--l2:#22c55e;--l3:#eab308;--l4:#ef4444;--radius:8px;--font:"Noto Sans SC",system-ui,sans-serif;--mono:"JetBrains Mono",monospace}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6}.container{max-width:840px;margin:0 auto;padding:40px 24px 80px}.header{text-align:center;margin-bottom:48px;padding-bottom:32px;border-bottom:1px solid var(--border)}.header h1{font-size:28px;font-weight:700;letter-spacing:-.5px;margin-bottom:8px}.header p{color:var(--text-secondary);font-size:15px;max-width:600px;margin:0 auto}.header .stats{display:flex;justify-content:center;gap:24px;margin-top:20px;font-size:14px}.header .stats .stat{background:var(--surface);border:1px solid var(--border);padding:8px 16px;border-radius:var(--radius)}.header .stats .stat strong{color:var(--accent);font-family:var(--mono)}.tabs{display:flex;gap:0;margin-bottom:32px;border-bottom:2px solid var(--border)}.tab{padding:12px 24px;font-size:15px;font-weight:500;color:var(--text-secondary);cursor:pointer;border:none;background:none;font-family:var(--font);position:relative;transition:color .2s}.tab:hover{color:var(--text)}.tab.active{color:var(--accent)}.tab.active:after{content:"";position:absolute;bottom:-2px;left:0;right:0;height:2px;background:var(--accent)}.form-section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:32px;margin-bottom:24px}.form-section h3{font-size:16px;font-weight:600;padding-bottom:12px;border-bottom:1px solid var(--border);color:var(--text)}.field,.form-section h3{margin-bottom:20px}.field label{display:block;font-size:13px;font-weight:500;margin-bottom:6px;color:var(--text)}.field label .required{color:var(--danger);margin-left:2px}.field label .hint{font-weight:400;color:var(--text-secondary);font-size:12px;margin-left:8px}.field input,.field select,.field textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:6px;font-size:14px;font-family:var(--font);background:var(--bg);transition:border-color .2s}.field textarea{min-height:120px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.row{grid-template-columns:1fr 1fr;grid-gap:16px}.row,.row-3{display:grid;gap:16px}.row-3{grid-template-columns:1fr 1fr 1fr;grid-gap:16px}.rubric-item{display:grid;grid-template-columns:1fr 80px 32px;grid-gap:8px;gap:8px;align-items:start;margin-bottom:8px}.rubric-item input[type=number]{text-align:center}.btn-remove{width:32px;height:38px;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--text-secondary);cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;transition:all .2s}.btn-remove:hover{border-color:var(--danger);color:var(--danger);background:#fef2f2}.btn-add{padding:8px 16px;border:1px dashed var(--border);border-radius:6px;background:none;color:var(--text-secondary);cursor:pointer;font-size:13px;font-family:var(--font);width:100%;transition:all .2s}.btn-add:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-light)}.btn-submit{width:100%;padding:14px;background:var(--accent);color:#fff;border:none;border-radius:var(--radius);font-size:15px;font-weight:600;font-family:var(--font);cursor:pointer;transition:background .2s}.btn-submit:hover{background:var(--accent-hover)}.btn-submit:disabled{background:var(--border);cursor:not-allowed}.btn-estimate{padding:8px 16px;border:1px solid var(--accent);border-radius:6px;background:var(--surface);color:var(--accent);cursor:pointer;font-size:13px;font-weight:600;font-family:var(--font);white-space:nowrap;transition:all .2s}.btn-estimate:hover:not(:disabled){background:var(--accent-light)}.btn-estimate:disabled{opacity:.6;cursor:not-allowed}.estimate-hint{font-size:13px;color:var(--text-secondary);line-height:1.7;background:var(--bg);border:1px dashed var(--border);border-radius:6px;padding:12px 14px}.estimate-result{padding:16px 18px;border-radius:var(--radius);border:1px solid}.estimate-result.tier-simple{background:#fef2f2;border-color:#fca5a5}.estimate-result.tier-mid{background:#fffbeb;border-color:#fcd34d}.estimate-result.tier-good{background:var(--accent-light);border-color:var(--accent)}.estimate-msg{font-size:15px;font-weight:600;line-height:1.7}.estimate-result.tier-simple .estimate-msg{color:#b91c1c}.estimate-result.tier-mid .estimate-msg{color:#92400e}.estimate-result.tier-good .estimate-msg{color:#115e59}.estimate-msg+.estimate-foot{margin-top:8px}.estimate-head{display:grid;grid-template-columns:auto 1fr;grid-gap:16px;gap:16px;align-items:stretch}.estimate-score{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:120px;padding:12px 20px;border-radius:var(--radius);background:var(--bg);border:1px solid var(--border)}.estimate-pct{font-family:var(--mono);font-size:38px;font-weight:700;line-height:1}.estimate-frac{font-family:var(--mono);font-size:13px;color:var(--text-secondary);margin-top:6px}.estimate-score.tier-simple .estimate-pct{color:var(--danger)}.estimate-score.tier-mid .estimate-pct{color:#b45309}.estimate-score.tier-good .estimate-pct{color:var(--accent)}.estimate-banner{display:flex;flex-direction:column;justify-content:center;padding:14px 18px;border-radius:var(--radius);border:1px solid}.estimate-banner.tier-simple{background:#fef2f2;border-color:#fca5a5}.estimate-banner.tier-mid{background:#fffbeb;border-color:#fcd34d}.estimate-banner.tier-good{background:var(--accent-light);border-color:var(--accent)}.estimate-banner-title{font-size:15px;font-weight:700;margin-bottom:4px}.estimate-banner.tier-simple .estimate-banner-title{color:#b91c1c}.estimate-banner.tier-mid .estimate-banner-title{color:#92400e}.estimate-banner.tier-good .estimate-banner-title{color:#115e59}.estimate-banner-advice{font-size:13px;line-height:1.6;color:var(--text)}.estimate-rubrics{gap:8px}.estimate-rubric-row{display:grid;grid-template-columns:64px 1fr;grid-gap:10px;gap:10px;align-items:start;padding:10px 12px;background:var(--bg);border:1px solid var(--border);border-radius:6px}.estimate-rubric-score{font-family:var(--mono);font-size:13px;font-weight:600;text-align:center;padding:3px 0;border-radius:4px}.estimate-rubric-score.full{background:var(--accent-light);color:var(--accent)}.estimate-rubric-score.zero{background:#fef2f2;color:var(--danger)}.estimate-rubric-score.partial{background:#fffbeb;color:#b45309}.estimate-rubric-desc{font-size:13px;line-height:1.6;white-space:pre-wrap}.estimate-rubric-reason{font-size:12px;color:var(--text-secondary);margin-top:4px}.estimate-answer{border:1px solid var(--border);border-radius:6px;background:var(--surface)}.estimate-answer summary{cursor:pointer;padding:10px 14px;font-size:13px;font-weight:500;color:var(--accent);-webkit-user-select:none;-moz-user-select:none;user-select:none}.estimate-answer-body{font-size:13px;line-height:1.7;white-space:pre-wrap;color:var(--text);border-top:1px solid var(--border);margin-top:4px;padding:12px 14px 14px}.estimate-foot{font-size:12px;color:var(--text-secondary);line-height:1.6}.estimate-scores{margin:10px 0 6px}.estimate-total{font-size:13px;font-weight:600;margin-bottom:6px}.estimate-rubrics{display:flex;flex-direction:column;gap:4px}.estimate-rubric-item{display:flex;gap:10px;font-size:12.5px;line-height:1.5}.rubric-score{flex-shrink:0;font-family:var(--mono);font-weight:600;min-width:52px}.rubric-reason{color:var(--text-secondary)}@media (max-width:640px){.estimate-head{grid-template-columns:1fr}}.question-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;margin-bottom:12px;transition:box-shadow .2s}.question-card:hover{box-shadow:0 2px 8px rgba(0,0,0,.06)}.question-card .meta{display:flex;gap:8px;margin-bottom:8px;flex-wrap:wrap;align-items:center}.badge{font-size:11px;font-weight:600;padding:3px 8px;border-radius:4px;font-family:var(--mono)}.badge-l1{background:#dbeafe;color:#1d4ed8}.badge-l2{background:#dcfce7;color:#15803d}.badge-l3{background:#fef9c3;color:#a16207}.badge-l4{background:#fee2e2;color:#dc2626}.badge-domain{background:var(--bg);border:1px solid var(--border);color:var(--text-secondary);font-family:var(--font);font-weight:500}.question-card .title{font-size:15px;font-weight:600;margin-bottom:6px}.question-card .preview{font-size:13px;color:var(--text-secondary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.question-card .footer{margin-top:12px;font-size:12px;color:var(--text-secondary);display:flex;justify-content:space-between}.empty{text-align:center;padding:60px 20px;color:var(--text-secondary)}.empty,.toast{font-size:14px}.toast{position:fixed;bottom:24px;right:24px;padding:14px 20px;background:var(--accent);color:#fff;border-radius:var(--radius);font-weight:500;box-shadow:0 4px 12px rgba(0,0,0,.15);animation:slideUp .3s ease;z-index:100}.toast.error{background:var(--danger)}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.loading{text-align:center;padding:40px;color:var(--text-secondary)}@media (max-width:640px){.row,.row-3{grid-template-columns:1fr}.container{padding:24px 16px 60px}.form-section{padding:20px}.header .stats{flex-direction:column;align-items:center}}