:root{
      --bg:#f7f7fb;
      --card:#ffffff;
      --text:#0f172a;
      --muted:#64748b;
      --border:#e2e8f0;
      --shadow: 0 10px 25px rgba(15,23,42,.06);

      --good:#065f46;
      --goodBg:#ecfdf5;
      --goodBd:#a7f3d0;

      --bad:#7f1d1d;
      --badBg:#fef2f2;
      --badBd:#fecaca;

      --warn:#92400e;
      --warnBg:#fffbeb;
      --warnBd:#fde68a;

      --neutral:#0f172a;
      --neutralBg:#f1f5f9;
      --neutralBd:#e2e8f0;

      --radius:18px;
    }

    *{box-sizing:border-box}
    body{margin:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI","Noto Sans JP",Helvetica,Arial;font-size:16px}
    .wrap{max-width:1240px;margin:0 auto;padding:18px}

    .topbar{display:flex;gap:14px;align-items:flex-start;justify-content:space-between;flex-wrap:wrap}
    h1{margin:0;font-size:clamp(22px, 1.3vw + 12px, 24px);letter-spacing:.2px}
    h2,h3{margin:0}
    .sectionTitle{font-size:14px;font-weight:750}
    .summaryTitle{font-size:13px;font-weight:650}
    .inlineH3{font-size:12px;font-weight:700;display:inline}
    .lead{margin:6px 0 0;color:var(--muted);font-size:13px;line-height:1.6}

    .card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hd{padding:14px 14px 10px;border-bottom:1px solid #f1f5f9}
    .bd{padding:14px}

    .layout{display:grid;grid-template-columns: 1.05fr .95fr;gap:12px;align-items:start}
    @media (max-width: 980px){.layout{grid-template-columns:1fr}}
    .layout .shareBlock{grid-column:2}
    @media (max-width: 980px){.layout .shareBlock{grid-column:1}}

    .grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
    @media (max-width: 720px){.grid2{grid-template-columns:1fr}}

    label{display:block;font-size:11px;color:var(--muted);margin:0 0 6px}
    input, select{
      width:100%;
      border:1px solid var(--border);
      border-radius:14px;
      padding:10px 12px;
      font-size:13px;
      background:#fff;
      outline:none;
    }
    input[type="number"]{font-variant-numeric:tabular-nums}
    input:focus, select:focus{box-shadow:0 0 0 3px rgba(15,23,42,.10);border-color:#cbd5e1}

    .btn{appearance:none;border:1px solid var(--border);background:#fff;border-radius:999px;padding:8px 12px;font-size:12px;cursor:pointer}
    .btn.primary{background:var(--neutral);border-color:var(--neutral);color:#fff}
    .btn.ghost{background:transparent}
    .btn:active{transform:translateY(1px)}

    .row{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap}

    .switch{display:inline-flex;gap:0;border:1px solid var(--border);border-radius:999px;overflow:hidden;background:#fff}
    .switch button{border:0;background:transparent;padding:8px 12px;font-size:12px;cursor:pointer;color:var(--muted)}
    .switch button[aria-selected="true"]{background:var(--neutral);color:#fff}

    .mini{font-size:12px;color:var(--muted);line-height:1.6}
    .mono{font-variant-numeric:tabular-nums}

    .banner{border-radius:16px;border:1px solid var(--neutralBd);background:var(--neutralBg);padding:12px}
    .banner.good{border-color:var(--goodBd);background:var(--goodBg)}
    .banner.bad{border-color:var(--badBd);background:var(--badBg)}
    .banner.warn{border-color:var(--warnBd);background:var(--warnBg)}

    .bannerTitle{font-size:clamp(16px, 0.8vw + 10px, 18px);font-weight:750;letter-spacing:.2px}
    .bannerSub{margin-top:6px;color:var(--muted);font-size:12px;line-height:1.6}

    .kpis{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:10px}
    .kpi{border:1px solid #f1f5f9;border-radius:16px;padding:10px;background:#fff}
    .kpi .t{font-size:11px;color:var(--muted)}
    .kpi .v{margin-top:5px;font-size:19px;font-weight:720}

    .callout{margin-top:10px;padding:10px;border-radius:16px;border:1px solid var(--border);background:#fff}
    .callout ul{margin:8px 0 0 18px;padding:0}
    .callout li{margin:6px 0;color:var(--text);font-size:13px;line-height:1.5}

    .shareBlock{margin-top:10px;padding:0}
    .shareTitle{font-size:12px;color:var(--muted);line-height:1.6}
    .shareButtons{margin-top:8px;display:flex;gap:8px;flex-wrap:wrap}
    .shareBtn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:6px 10px;border-radius:999px;border:1px solid var(--border);font-size:11px;color:var(--text);background:#fff;text-decoration:none;cursor:pointer}
    .shareBtn:active{transform:translateY(1px)}

    .siteHeader{margin-bottom:8px}
    .siteHeaderInner{display:flex;align-items:center;justify-content:space-between;gap:12px}
    .siteName{font-size:22px;font-weight:700;color:var(--text)}
    .siteLang{display:flex;align-items:center;gap:6px;font-size:13px}
    .siteLang a{color:var(--muted);text-decoration:none}
    .siteLang a:hover{text-decoration:underline}
    .sep{color:var(--border)}

    .siteFooter{margin-top:16px;padding:12px;border-radius:16px;border:1px solid var(--border);background:#fff}
    .footerDesc{font-size:12px;color:var(--text);line-height:1.7}
    .footerDisclaimer{margin-top:6px;font-size:11px;color:var(--muted);line-height:1.6}
    .footerTools{margin-top:10px}
    .footerToolsTitle{font-size:12px;font-weight:700;color:var(--text)}
    .footerToolsList{margin:6px 0 0 18px;padding:0}
    .footerToolsList li{margin:4px 0}
    .footerToolsList a{color:var(--muted);text-decoration:none}
    .footerToolsList a:hover{text-decoration:underline}
    .footerBottom{margin-top:10px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:11px;color:var(--muted)}
    .footerLang a{color:var(--muted);text-decoration:none}
    .footerLang a:hover{text-decoration:underline}


    .tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;border:1px solid var(--border);font-size:11px;color:var(--muted);background:#fff}
    .tag.good{border-color:var(--goodBd);color:var(--good);background:var(--goodBg)}
    .tag.bad{border-color:var(--badBd);color:var(--bad);background:var(--badBg)}
    .tag.warn{border-color:var(--warnBd);color:var(--warn);background:var(--warnBg)}

    .bars{margin-top:20px;margin-right:auto;text-align:left;margin-bottom:14px}
    .barRow{display:grid;grid-template-columns: 24px 1fr 60px;gap:4px;align-items:center;margin:8px 0}
    .barLabel{font-size:12px;color:var(--muted)}
    .barTrack{height:12px;border-radius:999px;background:#e9edf3;overflow:hidden}
    .barFill{height:100%;border-radius:999px;background:#0f172a;width:0%}
    .barVal{font-size:12px;text-align:right;color:var(--text);font-variant-numeric:tabular-nums}

    details{border:1px solid var(--border);border-radius:16px;background:#fff}
    details > summary{cursor:pointer;list-style:none;padding:12px 12px;font-size:13px;font-weight:650;display:flex;align-items:center;justify-content:space-between}
    details > summary::-webkit-details-marker{display:none}
    details .inside{padding:0 12px 12px}
    .helpDetails{width:100%;max-width:600px}

    table{width:100%;border-collapse:collapse}
    th,td{padding:10px 10px;border-top:1px solid #f1f5f9;vertical-align:top}
    thead th{background:#f8fafc;border-top:none;font-size:12px;color:#334155;text-align:left}
    .tableWrap{overflow:auto;border:1px solid #f1f5f9;border-radius:16px}

    .hideEasy{display:block}
    body[data-mode="easy"] .hideEasy{display:none}

    .helper{display:flex;gap:8px;align-items:flex-start;margin-top:10px}
    .helper .dot{width:10px;height:10px;border-radius:999px;background:#94a3b8;margin-top:5px;flex:0 0 auto}
    .helper .text{color:var(--muted);font-size:12px;line-height:1.6}

    .stepGuide{margin-top:10px;padding:10px;border-radius:14px;border:1px dashed var(--border);background:#fbfcfe}
    .guideTitle{font-size:12px;font-weight:750}
    .guideSteps{margin-top:6px;font-size:12px;color:var(--text);line-height:1.6}
    .guideNote{margin-top:6px;font-size:11px;color:var(--muted);line-height:1.6}

    .inputNote{margin-top:6px;font-size:11px;color:var(--warn);background:var(--warnBg);border:1px solid var(--warnBd);padding:6px 8px;border-radius:10px;display:none}
    .inputNote.show{display:block}

    .hint{margin-top:6px}
    .subtleNote{margin-top:10px;color:var(--muted)}

    .toast{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);
      background:#0f172a;color:#fff;padding:10px 12px;border-radius:999px;font-size:12px;box-shadow:var(--shadow);
      opacity:0;pointer-events:none;transition:opacity .15s ease}
    .toast.show{opacity:1}

    /* footer/header visibility: adjust text contrast and size only */
    .siteName{color:var(--text);font-size:22px}
    .siteLang, .siteLang a{color:var(--text)}
    .footerDesc{color:var(--text);font-size:12px}
    .footerDisclaimer, .footerBottom{color:var(--muted);font-size:11px}