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

        /* Hero Section */
        #yk-portal-v2 .yk-legacy-tool .hero-section {
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            position: relative;
            overflow: hidden;
            padding-top: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 60vh;
        }
        
        #yk-portal-v2 .yk-legacy-tool .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
            opacity: 0.2;
        }
        
        #yk-portal-v2 .yk-legacy-tool .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: white;
            width: 100%;
            padding: 40px 20px;
            margin: 0 auto;
        }
        /* Override global .hero-content alignment to ensure centering on this page */
        #yk-portal-v2 .yk-legacy-tool .hero-section .hero-content {
            display: flex;
            flex-direction: column;
            align-items: center !important;
            justify-content: center;
        }
        
        #yk-portal-v2 .yk-legacy-tool .hero-title {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            text-shadow: 0 4px 20px rgba(0,0,0,0.3);
            line-height: 1.2;
        }
        
        #yk-portal-v2 .yk-legacy-tool .hero-subtitle {
            font-size: 1.4rem;
            font-weight: 300;
            margin-bottom: 2rem;
            opacity: 0.95;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        
        /* Section Styles */
        #yk-portal-v2 .yk-legacy-tool .content-section {
            padding: 80px 0;
        }
        
        #yk-portal-v2 .yk-legacy-tool .section-header {
            text-align: center;
            margin-bottom: 60px;
        }
        
        #yk-portal-v2 .yk-legacy-tool .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: #2c3e50;
            margin-bottom: 1rem;
            position: relative;
        }
        
        #yk-portal-v2 .yk-legacy-tool .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(135deg, #1e3c72, #2a5298);
            border-radius: 2px;
        }
        
        #yk-portal-v2 .yk-legacy-tool .section-description {
            font-size: 1.1rem;
            color: #7f8c8d;
            max-width: 700px;
            margin: 0 auto;
            line-height: 1.7;
        }
        
        /* Pain Points Section */
        #yk-portal-v2 .yk-legacy-tool .pain-points {
            background: #f7f9fc;
        }
        
        #yk-portal-v2 .yk-legacy-tool .pain-card {
            background: white;
            padding: 40px 30px;
            border-radius: 15px;
            box-shadow: 0 8px 25px rgba(30, 60, 114, 0.1);
            text-align: center;
            margin-bottom: 30px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid rgba(30, 60, 114, 0.05);
        }
        
        #yk-portal-v2 .yk-legacy-tool .pain-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(30, 60, 114, 0.15);
        }
        
        #yk-portal-v2 .yk-legacy-tool .pain-icon {
            font-size: 3rem;
            color: #ff6b6b;
            margin-bottom: 20px;
        }
        
        #yk-portal-v2 .yk-legacy-tool .pain-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: #2c3e50;
            margin-bottom: 15px;
        }
        
        #yk-portal-v2 .yk-legacy-tool .pain-text {
            color: #7f8c8d;
            line-height: 1.6;
        }
        
        /* Features Section */
        #yk-portal-v2 .yk-legacy-tool .feature-card {
            background: white;
            padding: 40px 30px;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(30, 60, 114, 0.08);
            text-align: center;
            margin-bottom: 30px;
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }
        
        #yk-portal-v2 .yk-legacy-tool .feature-card:hover {
            transform: translateY(-5px);
            border-color: #2a5298;
            box-shadow: 0 15px 35px rgba(30, 60, 114, 0.15);
        }
        
        #yk-portal-v2 .yk-legacy-tool .feature-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, #1e3c72, #2a5298);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            font-size: 2rem;
            color: white;
        }
        /* 提升强大功能特性图标对比度，避免蓝底蓝标 */
        #yk-portal-v2 .yk-legacy-tool .feature-card .feature-icon i {
            color: #ffffff !important;
            text-shadow: 0 2px 6px rgba(0,0,0,0.3);
        }
        
        #yk-portal-v2 .yk-legacy-tool .feature-title {
            font-size: 1.4rem;
            font-weight: 600;
            color: #2c3e50;
            margin-bottom: 15px;
        }
        
        #yk-portal-v2 .yk-legacy-tool .feature-description {
            color: #7f8c8d;
            line-height: 1.6;
            margin-bottom: 15px;
        }
        
        #yk-portal-v2 .yk-legacy-tool .feature-benefit {
            color: #27ae60;
            font-weight: 600;
            font-style: italic;
        }
        
        /* Scenarios Section */
        #yk-portal-v2 .yk-legacy-tool .scenarios {
            background: #f7f9fc;
            color: #2c3e50;
        }
        
        #yk-portal-v2 .yk-legacy-tool .scenario-card {
            background: white;
            padding: 35px 25px;
            border-radius: 15px;
            text-align: center;
            margin-bottom: 30px;
            transition: all 0.3s ease;
            box-shadow: 0 5px 20px rgba(30, 60, 114, 0.08);
            border: 2px solid transparent;
        }
        
        #yk-portal-v2 .yk-legacy-tool .scenario-card:hover {
            transform: translateY(-5px);
            border-color: #2a5298;
            box-shadow: 0 15px 35px rgba(30, 60, 114, 0.15);
        }
        
        #yk-portal-v2 .yk-legacy-tool .scenario-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
            color: #2a5298;
        }
        
        #yk-portal-v2 .yk-legacy-tool .scenario-title {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: #2c3e50;
        }
        
        #yk-portal-v2 .yk-legacy-tool .scenario-description {
            color: #7f8c8d;
            line-height: 1.6;
        }
        
        /* Usage Steps */
        #yk-portal-v2 .yk-legacy-tool .step-card {
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(30, 60, 114, 0.08);
            margin-bottom: 20px;
            position: relative;
            overflow: hidden;
            border: 2px solid transparent;
            transition: all 0.3s ease;
        }
        
        #yk-portal-v2 .yk-legacy-tool .step-card:hover {
            border-color: #2a5298;
            box-shadow: 0 10px 30px rgba(30, 60, 114, 0.12);
        }
        
        #yk-portal-v2 .yk-legacy-tool .step-number {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, #1e3c72, #2a5298);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 1.1rem;
        }
        
        #yk-portal-v2 .yk-legacy-tool .step-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: #2c3e50;
            margin-bottom: 15px;
            padding-right: 60px;
        }
        
        #yk-portal-v2 .yk-legacy-tool .step-description {
            color: #7f8c8d;
            line-height: 1.6;
        }
        
        /* FAQ Section */
        #yk-portal-v2 .yk-legacy-tool .faq-section {
            background: #f7f9fc;
        }
        
        #yk-portal-v2 .yk-legacy-tool .faq-item {
            background: white;
            margin-bottom: 15px;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(30, 60, 114, 0.05);
            border: 1px solid rgba(30, 60, 114, 0.05);
        }
        
        #yk-portal-v2 .yk-legacy-tool .faq-question {
            padding: 25px 30px;
            background: white;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 1.1rem;
            font-weight: 600;
            color: #2c3e50;
            cursor: pointer;
            transition: background-color 0.3s ease;
            position: relative;
        }
        
        #yk-portal-v2 .yk-legacy-tool .faq-question:hover {
            background: #f8f9fa;
        }
        
        #yk-portal-v2 .yk-legacy-tool .faq-question::after {
            content: '+';
            position: absolute;
            right: 30px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.5rem;
            transition: transform 0.3s ease;
        }
        
        #yk-portal-v2 .yk-legacy-tool .faq-question.active::after {
            transform: translateY(-50%) rotate(45deg);
        }
        
        #yk-portal-v2 .yk-legacy-tool .faq-answer {
            padding: 0 30px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }
        
        #yk-portal-v2 .yk-legacy-tool .faq-answer.show {
            padding: 20px 30px 30px;
            max-height: 200px;
        }
        
        #yk-portal-v2 .yk-legacy-tool .faq-answer p {
            color: #7f8c8d;
            line-height: 1.6;
            margin: 0;
        }
        
        /* Download Section */
        #yk-portal-v2 .yk-legacy-tool .download-section {
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            color: white;
            text-align: center;
        }
        
        #yk-portal-v2 .yk-legacy-tool .download-btn {
            display: inline-block;
            background: #ffffff;
            color: #1e3c72;
            padding: 20px 50px;
            border-radius: 50px;
            text-decoration: none;
            font-size: 1.2rem;
            font-weight: 700;
            margin: 20px 10px;
            transition: all 0.3s ease;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }
        
        #yk-portal-v2 .yk-legacy-tool .download-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.3);
            color: #1e3c72;
            text-decoration: none;
        }
        
        #yk-portal-v2 .yk-legacy-tool .system-requirements {
            margin-top: 30px;
            font-size: 1rem;
            opacity: 0.9;
        }
        
        /* Responsive Design */
        @media (max-width: 768px) {
            #yk-portal-v2 .yk-legacy-tool .hero-section {
                min-height: 60vh;
                padding-top: 70px;
            }
            
            #yk-portal-v2 .yk-legacy-tool .hero-title {
                font-size: 2.5rem;
            }
            
            #yk-portal-v2 .yk-legacy-tool .hero-subtitle {
                font-size: 1.2rem;
            }
            
            #yk-portal-v2 .yk-legacy-tool .section-title {
                font-size: 2rem;
            }
            
            #yk-portal-v2 .yk-legacy-tool .content-section {
                padding: 60px 0;
            }
        }
        
        @media (max-width: 576px) {
            #yk-portal-v2 .yk-legacy-tool .hero-section {
                min-height: 50vh;
                padding-top: 60px;
            }
            
            #yk-portal-v2 .yk-legacy-tool .hero-content {
                padding: 30px 15px;
            }
            
            #yk-portal-v2 .yk-legacy-tool .hero-title {
                font-size: 2rem;
                line-height: 1.3;
            }
            
            #yk-portal-v2 .yk-legacy-tool .hero-subtitle {
                font-size: 1.1rem;
            }
        }