:root{--bg:#f7f8fb;--surface:#ffffff;--surface-muted:#fafbfe;--text:#232b3a;--muted:#8a93a5;--line:#e4e8f0;--line-strong:#d7dde8;--brand:#5448e5;--brand-soft:#f2f0ff;--brand-deep:#4338ca;--accent:#19a36f;--accent-soft:#f0fbf6;--warn:#d97706;--warn-soft:#fff7eb;--danger:#ef4444;--shadow:0 4px 16px rgba(22,31,52,0.05);--radius:14px;--radius-sm:9px}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);font:13px/1.45 Noto Sans JP,sans-serif}button,input,select,textarea{font:inherit}button{border:1px solid transparent;border-radius:8px;background:var(--brand);color:#fff;padding:10px 14px;font-size:12px;font-weight:700;cursor:pointer;transition:background .14s ease,border-color .14s ease,color .14s ease}button:hover{background:var(--brand-deep)}button:disabled{opacity:.55;cursor:not-allowed}.admin-shortcut,.ghost-button,.icon-button,.month-label-button,.secondary-button,.tab-button{background:#fff;color:#566074;border-color:var(--line-strong)}input,select,textarea{width:100%;border:1px solid var(--line-strong);border-radius:8px;background:#fff;color:var(--text);padding:10px 11px;font-size:13px}textarea{resize:vertical}label span{display:inline-block;margin-bottom:4px;color:var(--muted);font-size:11px;font-weight:600}table{width:100%;border-collapse:collapse}td,th{padding:10px 12px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}th{background:var(--surface-muted);color:var(--muted);font-size:11px;font-weight:700}h1,h2{margin:0}h1{font-size:15px;line-height:1.15}h1,h2{font-weight:700}h2{font-size:13px}.page-shell{width:min(1400px,calc(100vw - 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