:root{color-scheme:light;--bg:#f5f5f7;--surface:rgba(255,255,255,0.88);--surface-solid:#ffffff;--surface-strong:#f2f2f7;--text:#1d1d1f;--muted:#6e6e73;--muted-strong:#424245;--border:rgba(0,0,0,0.12);--border-soft:rgba(0,0,0,0.08);--accent:#0071e3;--accent-hover:#0077ed;--success:#248a3d;--warning:#b26a00;--warning-bg:#fff6df;--error:#b42318;--error-bg:#fff4f2;--shadow:0 1px 2px rgba(0,0,0,0.04),0 18px 44px rgba(0,0,0,0.06)}*{box-sizing:border-box}body,html{min-height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,SF Pro Display,Segoe UI,sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}button,input{font:inherit}a,button{-webkit-tap-highlight-color:transparent}.app-shell{min-height:100vh;padding:40px 24px}.workspace{width:min(1280px,100%);margin:0 auto}.topbar{margin-bottom:18px}h1,h2,p{margin:0}h1{max-width:none;font-size:38px;line-height:1.08;font-weight:760;white-space:nowrap}h1,h2{letter-spacing:0}h2{font-size:18px;line-height:1.25;font-weight:700}.metric,.panel,.review-panel{border:1px solid var(--border-soft);border-radius:8px;background:var(--surface);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.panel{padding:18px;margin-bottom:14px}.primary-panel{grid-template-columns:minmax(180px,220px) minmax(0,1fr)}.primary-panel,.reference-panel{display:grid;align-items:center;gap:18px}.reference-panel{grid-template-columns:minmax(170px,220px) minmax(0,1fr) minmax(220px,auto)}.panel-header{display:flex;align-items:center;gap:10px;min-width:0;margin-bottom:0}.panel-header svg{color:var(--accent);stroke-width:1.9}.hidden-input{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.download-button,.file-button,.process-button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:44px;border-radius:8px;border:1px solid transparent;padding:0 16px;cursor:pointer;text-decoration:none;font-size:15px;font-weight:650;line-height:1;transition:background-color .16s ease,border-color .16s ease,color .16s ease,transform .16s ease,box-shadow .16s ease}.file-button{width:100%;justify-content:flex-start;border-color:var(--border-soft);background:var(--surface-solid);color:var(--accent)}.download-button span,.file-button span,.process-button span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-button.secondary{color:var(--accent)}.download-button svg,.file-button svg,.process-button svg{flex:0 0 auto;stroke-width:2}.reference-current,.reference-layout{min-width:0}.reference-current{display:grid;grid-template-columns:minmax(180px,.8fr) minmax(300px,1.2fr);align-items:center;gap:18px}.reference-current-head{display:flex;align-items:flex-start;gap:10px}.reference-current-head svg{flex:0 0 auto;color:var(--success);margin-top:2px;stroke-width:2}.reference-current-head span,.reference-meta dt{color:var(--muted);font-size:12px;line-height:1.25}.reference-current-head strong{display:block;margin-top:3px;font-size:15px;line-height:1.25;font-weight:700;overflow-wrap:anywhere}.reference-meta{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px 14px;margin:0;padding:0 0 0 18px;border-left:1px solid var(--border-soft)}.reference-meta dd,.reference-meta div,.reference-meta dt{margin:0}.reference-meta dd{margin-top:3px;color:var(--text);font-size:14px;font-weight:650;line-height:1.25;overflow-wrap:anywhere}.reference-upload{width:auto;min-width:220px;justify-content:center}.participant-controls{display:flex;align-items:center;gap:10px;min-width:0;flex-wrap:wrap}.participant-upload{width:auto;min-width:260px;max-width:min(420px,100%)}.process-button{min-width:142px;border-color:var(--border-soft);background:var(--surface-solid);color:var(--accent)}.file-button:hover,.process-button:hover{border-color:rgba(0,113,227,.24);background:#f5f9ff}.download-button:active,.file-button:active,.process-button:active{transform:translateY(1px)}.process-button:disabled{border-color:var(--border-soft);background:#f5f5f7;color:#8e8e93;box-shadow:none;cursor:not-allowed}.download-button{min-width:128px;border-color:var(--border-soft);background:var(--surface-solid);color:var(--accent)}.download-button:hover{border-color:rgba(0,113,227,.24);background:#f5f9ff}.download-button:focus-visible,.file-button:focus-visible,.process-button:focus-visible{outline:3px solid rgba(0,113,227,.28);outline-offset:2px}.error-box{display:flex;align-items:center;gap:10px;border:1px solid rgba(180,35,24,.2);border-radius:8px;padding:14px 16px;margin-bottom:16px;color:var(--error);background:var(--error-bg)}.results-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:16px}.metric{min-height:112px;padding:14px 16px}.metric span{display:block;color:var(--muted);font-size:13px;margin-bottom:7px}.metric strong{display:block;color:var(--text);font-size:25px;line-height:1;font-weight:720;letter-spacing:0}.metric em{display:block;margin-top:10px;color:var(--muted);font-size:12px;font-style:normal;line-height:1.2}.metric-ok strong{color:var(--success)}.metric-warn strong{color:var(--warning)}.review-panel{padding:18px}.review-panel h2{margin-bottom:14px}.review-table-wrap{overflow:auto;border:1px solid var(--border-soft);border-radius:8px;background:var(--surface-solid)}.review-table{width:100%;border-collapse:collapse;min-width:920px;font-size:14px}.review-table td,.review-table th{padding:12px 14px;border-bottom:1px solid var(--border-soft);text-align:left;vertical-align:top}.review-table th{background:#f8f8fa;color:var(--muted);font-size:12px;font-weight:700}.review-table tr:last-child td{border-bottom:0}.spin{animation:spin .8s linear infinite}@media (prefers-reduced-motion:reduce){*,:after,:before{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@keyframes spin{to{transform:rotate(1turn)}}@media (max-width:820px){.app-shell{padding:30px 16px}.topbar{margin-bottom:22px}h1{font-size:28px;white-space:normal}.primary-panel,.reference-current,.reference-panel,.results-grid{grid-template-columns:1fr}.reference-meta{grid-template-columns:repeat(3,minmax(0,1fr));padding-left:0;padding-top:12px;border-left:0;border-top:1px solid var(--border-soft)}.download-button,.participant-upload,.process-button,.reference-upload{width:100%}.participant-controls{align-items:stretch;flex-direction:column}}@media (max-width:540px){h1{font-size:25px}.reference-meta{grid-template-columns:1fr}}