:root {
      --brand:#0f5fa8; --brand2:#073e70; --bg:#f3f6f9; --card:#fff;
      --text:#1e293b; --muted:#64748b; --line:#dbe3ec; --ok:#16803c;
      --warn:#b7791f; --danger:#c53030; --same:#fff34f; --diff:#f781bf; --rev:#fff34f;
    }
    *{box-sizing:border-box}
    body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif}
    .site-header{background:#fff}
    .site-brand{display:flex;align-items:center;justify-content:center;min-height:104px;padding:20px 16px}
    .site-brand a{color:#111;text-decoration:none;font-size:32px;font-weight:700;line-height:1.35;letter-spacing:.01em}
    .app-title-bar{background:#111;color:#fff;padding:13px max(20px,calc((100% - 1180px)/2 + 16px));font-size:16px;font-weight:700;line-height:1.55;text-align:left}
    main{max-width:1180px;margin:22px auto;padding:0 16px 40px}
    .feature-guide,.usage-guide{background:#fff;border:1px solid var(--line);border-left:5px solid var(--brand);border-radius:10px;margin:0 0 16px;box-shadow:0 4px 14px #0f172a0a;overflow:hidden}
    .feature-guide{border-left-color:var(--ok)}
    .guide-summary{display:flex;align-items:center;gap:8px;padding:14px 18px;cursor:pointer;font-size:16px;font-weight:700;color:var(--brand2);list-style:none;user-select:none}
    .guide-summary::-webkit-details-marker{display:none}
    .guide-summary::before{content:'▶';font-size:12px;transition:transform .2s ease}
    .feature-guide[open] .guide-summary::before,.usage-guide[open] .guide-summary::before{transform:rotate(90deg)}
    .guide-content{padding:0 18px 14px;border-top:1px solid var(--line)}
    .feature-guide ul,.usage-guide ol{margin:12px 0 0;padding-left:22px;font-size:14px;line-height:1.8}
    .feature-guide li+li,.usage-guide li+li{margin-top:2px}
    .grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .card{min-width:0;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:0 4px 14px #0f172a0a}
    .card h2{margin:0 0 14px;font-size:18px;color:var(--brand2)}
    .full{grid-column:1/-1}
    label{display:block;font-weight:700;font-size:14px;margin:10px 0 6px}
    input[type=file],input[type=text],input[type=number]{width:100%;padding:10px;border:1px solid #cbd5e1;border-radius:8px;background:#fff;font-size:14px}
    input:focus{outline:2px solid #93c5fd;border-color:#60a5fa}
    .file-drop-input{display:none}
    .file-drop-zone{display:flex;align-items:center;justify-content:center;min-height:92px;padding:18px;border:2px dashed #94a3b8;border-radius:10px;background:#f8fbff;color:var(--brand);font-size:15px;font-weight:700;text-align:center;cursor:pointer;transition:border-color .2s ease,background .2s ease,box-shadow .2s ease}
    .file-drop-zone:hover,.file-drop-zone:focus{border-color:var(--brand);background:#eef7ff;box-shadow:0 0 0 3px #bfdbfe66;outline:none}
    .file-drop-zone.dragover{border-color:var(--brand);background:#e8f4ff;box-shadow:0 0 0 3px #93c5fd66}
    .file-drop-zone.selected{min-height:auto;padding:0;border:1px solid var(--line);background:#fff;color:var(--text);font-weight:400;text-align:left;cursor:default;box-shadow:none}
    .file-drop-zone.selected:hover,.file-drop-zone.selected:focus{border-color:var(--line);background:#fff;box-shadow:none;outline:none}
    .file-drop-zone.selected .fileitem{width:100%;border-bottom:0}
    .row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
    .range{display:grid;grid-template-columns:75px 1fr 24px 1fr;gap:7px;align-items:center;margin:8px 0}
    .position-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .position-group{min-width:0;border:1px solid var(--line);border-radius:9px;padding:12px;background:#fafcff}
    .position-title{margin:0 0 10px;font-size:14px;font-weight:700;color:var(--text)}
    .position-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
    .field{min-width:0}
    .field label{margin:0 0 6px}
    .field input{height:40px}
    .range span{font-size:13px;color:var(--muted)}
    .radio{display:flex;gap:18px;align-items:center;margin:6px 0 10px}
    .radio label{font-weight:400;margin:0;display:flex;align-items:center;gap:5px}
    button{border:0;border-radius:9px;padding:11px 18px;font-weight:700;cursor:pointer;font-size:14px}
    button.primary{background:var(--brand);color:#fff}
    button.secondary{background:#e2e8f0;color:#1e293b}
    button.success{background:#16803c;color:#fff}
    button:disabled{opacity:.45;cursor:not-allowed}
    .actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:15px}
    .status{margin-top:14px;padding:12px;border-radius:8px;background:#f8fafc;border:1px solid var(--line);font-size:14px;min-height:44px}
    progress{width:100%;height:15px;margin-top:10px}
    .files{max-height:190px;overflow:auto;border:1px solid var(--line);border-radius:8px;margin-top:8px}
    .input-files-zone{min-height:92px;border:2px dashed #94a3b8;background:#f8fbff;color:var(--brand);font-size:15px;font-weight:700;cursor:pointer;transition:border-color .2s ease,background .2s ease,box-shadow .2s ease}
    .input-files-zone:hover,.input-files-zone:focus{border-color:var(--brand);background:#eef7ff;box-shadow:0 0 0 3px #bfdbfe66;outline:none}
    .input-files-zone.dragover{border-color:var(--brand);background:#e8f4ff;box-shadow:0 0 0 3px #93c5fd66}
    .input-files-zone .empty{color:var(--brand);padding:32px 18px}
    .file-actions{display:none;align-items:center;gap:10px;margin:0 0 8px}
    .file-actions.visible{display:flex}
    .fileitem{display:flex;justify-content:space-between;gap:12px;padding:9px 10px;border-bottom:1px solid #edf2f7;font-size:13px}
    .fileitem:last-child{border-bottom:0}.remove{color:var(--danger);background:transparent;padding:0;font-size:13px}
    .summary{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:10px}
    .metric{border:1px solid var(--line);border-radius:9px;padding:11px;background:#fafcff}
    .metric b{display:block;font-size:22px}.metric span{font-size:12px;color:var(--muted)}
    .legend{display:flex;gap:15px;flex-wrap:wrap;font-size:13px;margin:10px 0}
    .dot{width:14px;height:14px;display:inline-block;border:1px solid #777;vertical-align:-2px;margin-right:5px}
    table{width:100%;border-collapse:collapse;font-size:13px}
    th,td{border:1px solid var(--line);padding:8px;text-align:left;vertical-align:top}
    th{background:#eef4fa;position:sticky;top:0}
    .tablewrap{max-height:360px;overflow:auto;border-radius:8px;border:1px solid var(--line)}
    .result-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:12px}
    .result-panel{border:1px solid var(--line);border-radius:9px;overflow:hidden;background:#fff}
    .result-panel h3{margin:0;padding:10px 12px;font-size:14px;text-align:center}
    .result-panel .tablewrap{border:0;border-radius:0;max-height:300px}
    .file-result{margin-top:12px;border:1px solid var(--line);border-radius:9px;padding:12px;background:#fafcff}
    .file-result h3{margin:0 0 8px;font-size:14px}
    .file-result ol{margin:0;padding-left:24px;max-height:150px;overflow:auto;font-size:13px}
    .empty{padding:22px;text-align:center;color:var(--muted)}
    details{margin-top:12px}summary{cursor:pointer;font-weight:700;color:var(--brand2)}
    .small{font-size:12px;color:var(--muted);line-height:1.65}
    footer{max-width:1180px;margin:0 auto 30px;padding:0 16px;color:#64748b;font-size:12px;line-height:1.7}
    @media(max-width:800px){.site-brand{min-height:82px}.site-brand a{font-size:27px}.app-title-bar{padding:11px 16px;font-size:14px}.grid{grid-template-columns:1fr}.full{grid-column:auto}.summary{grid-template-columns:1fr 1fr}.result-grid{grid-template-columns:1fr}.range{grid-template-columns:65px 1fr 18px 1fr}.position-grid{grid-template-columns:1fr}}