/* Original tool presentation, scoped to this detail page. */

        #yk-portal-v2 .yk-legacy-tool {
            --primary: #0369a1;
            --primary-light: #0ea5e9;
            --primary-dark: #075985;
            --accent: #10b981;
            --accent-light: #34d399;
            --bg-light: #f0f9ff;
            --bg-section: #f8fafc;
            --text-dark: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --nav-bg-color: rgba(13, 25, 49, 0.85);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
            --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
            --radius: 12px;
        }

        #yk-portal-v2 .yk-legacy-tool * { box-sizing: border-box; }

        #yk-portal-v2 .yk-legacy-tool {
            padding-top: 60px;
            font-family: 'Nunito', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-body);
            line-height: 1.7;
            background: #fff;
        }