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

        /* 全局样式优化 */
        #yk-portal-v2 .yk-legacy-tool {
            font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
            color: #333;
            background: #f8f9fa;
            line-height: 1.8;
            overflow-x: hidden;
        }

        /* Banner 渐变背景 */
        #yk-portal-v2 .yk-legacy-tool .hero-banner {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 120px 0 80px;
            position: relative;
            overflow: hidden;
            margin-top: 70px;
        }

        #yk-portal-v2 .yk-legacy-tool .hero-banner::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 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,101.3C1248,85,1344,75,1392,69.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
            background-size: cover;
            opacity: 0.3;
        }

        #yk-portal-v2 .yk-legacy-tool .hero-banner .container {
            position: relative;
            z-index: 1;
        }

        #yk-portal-v2 .yk-legacy-tool .hero-banner h1 {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.2);
            animation: yka7f1674a6f411ff3-fadeInUp 0.8s ease;
        }

        #yk-portal-v2 .yk-legacy-tool .hero-banner .subtitle {
            font-size: 1.4rem;
            font-weight: 300;
            opacity: 0.95;
            max-width: 800px;
            margin: 0 auto;
            animation: yka7f1674a6f411ff3-fadeInUp 1s ease;
            line-height: 1.6;
        }

        @keyframes yka7f1674a6f411ff3-fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* 主要内容区域 */
        #yk-portal-v2 .yk-legacy-tool .main-content {
            background: white;
            padding: 80px 0;
        }

        #yk-portal-v2 .yk-legacy-tool .section {
            padding: 60px 0;
        }

        #yk-portal-v2 .yk-legacy-tool .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: #2d3748;
            text-align: center;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 20px;
        }

        #yk-portal-v2 .yk-legacy-tool .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, #667eea, #764ba2);
            border-radius: 2px;
        }

        #yk-portal-v2 .yk-legacy-tool .section-subtitle {
            text-align: center;
            color: #718096;
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto 50px;
        }

        /* 需求描述卡片 */
        #yk-portal-v2 .yk-legacy-tool .pain-points {
            background: linear-gradient(135deg, #f5f7fa 0%, #ffffff 100%);
            border-radius: 16px;
            padding: 50px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.08);
            margin-bottom: 40px;
        }

        #yk-portal-v2 .yk-legacy-tool .pain-points .icon-box {
            display: flex;
            align-items: flex-start;
            margin-bottom: 30px;
            padding: 25px;
            background: white;
            border-radius: 12px;
            transition: all 0.3s ease;
            border-left: 4px solid #667eea;
        }

        #yk-portal-v2 .yk-legacy-tool .pain-points .icon-box:hover {
            transform: translateX(10px);
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.15);
        }

        #yk-portal-v2 .yk-legacy-tool .pain-points .icon-box i {
            font-size: 2.5rem;
            color: #667eea;
            margin-right: 25px;
            min-width: 60px;
        }

        #yk-portal-v2 .yk-legacy-tool .pain-points .icon-box h4 {
            font-size: 1.3rem;
            font-weight: 600;
            color: #2d3748;
            margin-bottom: 10px;
        }

        #yk-portal-v2 .yk-legacy-tool .pain-points .icon-box p {
            color: #718096;
            margin: 0;
            line-height: 1.8;
        }

        /* 功能特点网格 */
        #yk-portal-v2 .yk-legacy-tool .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 35px;
            margin-top: 50px;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card {
            background: white;
            border-radius: 16px;
            padding: 40px 30px;
            text-align: center;
            box-shadow: 0 10px 40px rgba(0,0,0,0.08);
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            border: 1px solid #e2e8f0;
            position: relative;
            overflow: hidden;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #667eea, #764ba2);
            transform: scaleX(0);
            transition: transform 0.4s ease;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card:hover::before {
            transform: scaleX(1);
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 60px rgba(102, 126, 234, 0.2);
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card .icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            font-size: 2.5rem;
            color: white;
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: #2d3748;
            margin-bottom: 15px;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card .feature-label {
            display: inline-block;
            background: #f0f4ff;
            color: #667eea;
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 15px;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card p {
            color: #718096;
            line-height: 1.8;
            margin: 0;
        }

        #yk-portal-v2 .yk-legacy-tool .benefit-highlight {
            color: #667eea;
            font-weight: 600;
            display: block;
            margin-top: 10px;
        }

        /* 应用场景 */
        #yk-portal-v2 .yk-legacy-tool .scenarios {
            background: linear-gradient(135deg, #f5f7fa 0%, #ffffff 100%);
            border-radius: 16px;
            padding: 50px;
            margin-top: 50px;
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-card {
            background: white;
            padding: 35px 25px;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.06);
            transition: all 0.3s ease;
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 35px rgba(102, 126, 234, 0.15);
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-card .scenario-icon {
            font-size: 3rem;
            margin-bottom: 20px;
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-card h4 {
            font-size: 1.3rem;
            font-weight: 600;
            color: #2d3748;
            margin-bottom: 15px;
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-card .user-group {
            color: #667eea;
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 10px;
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-card p {
            color: #718096;
            margin: 0;
            line-height: 1.7;
        }

        /* 使用说明步骤 */
        #yk-portal-v2 .yk-legacy-tool .steps-container {
            max-width: 900px;
            margin: 50px auto 0;
        }

        #yk-portal-v2 .yk-legacy-tool .step-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 40px;
            padding: 30px;
            background: white;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.06);
            transition: all 0.3s ease;
        }

        #yk-portal-v2 .yk-legacy-tool .step-item:hover {
            box-shadow: 0 10px 35px rgba(102, 126, 234, 0.15);
        }

        #yk-portal-v2 .yk-legacy-tool .step-number {
            min-width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            font-weight: 700;
            margin-right: 25px;
            box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
        }

        #yk-portal-v2 .yk-legacy-tool .step-content h4 {
            font-size: 1.3rem;
            font-weight: 600;
            color: #2d3748;
            margin-bottom: 10px;
        }

        #yk-portal-v2 .yk-legacy-tool .step-content p {
            color: #718096;
            margin: 0;
            line-height: 1.8;
        }

        #yk-portal-v2 .yk-legacy-tool .step-note {
            background: #f0f4ff;
            border-left: 4px solid #667eea;
            padding: 20px;
            border-radius: 8px;
            margin-top: 15px;
            color: #4a5568;
        }

        /* FAQ 手风琴 */
        #yk-portal-v2 .yk-legacy-tool .faq-container {
            max-width: 900px;
            margin: 50px auto 0;
        }

        #yk-portal-v2 .yk-legacy-tool .faq-item {
            background: white;
            border-radius: 12px;
            margin-bottom: 20px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.06);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        #yk-portal-v2 .yk-legacy-tool .faq-item:hover {
            box-shadow: 0 8px 30px rgba(102, 126, 234, 0.12);
        }

        #yk-portal-v2 .yk-legacy-tool .faq-question {
            padding: 25px 30px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: white;
            transition: all 0.3s ease;
            border-left: 4px solid transparent;
        }

        #yk-portal-v2 .yk-legacy-tool .faq-question:hover {
            background: #f8fafc;
            border-left-color: #667eea;
        }

        #yk-portal-v2 .yk-legacy-tool .faq-question h4 {
            margin: 0;
            font-size: 1.2rem;
            font-weight: 600;
            color: #2d3748;
            flex: 1;
        }

        #yk-portal-v2 .yk-legacy-tool .faq-icon {
            font-size: 1.5rem;
            color: #667eea;
            transition: transform 0.3s ease;
        }

        #yk-portal-v2 .yk-legacy-tool .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        #yk-portal-v2 .yk-legacy-tool .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 30px;
            background: #f8fafc;
        }

        #yk-portal-v2 .yk-legacy-tool .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 25px 30px;
        }

        #yk-portal-v2 .yk-legacy-tool .faq-answer p {
            margin: 0;
            color: #4a5568;
            line-height: 1.8;
        }

        /* 下载按钮区域 */
        #yk-portal-v2 .yk-legacy-tool .download-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 80px 0;
            text-align: center;
            color: white;
            margin-top: 60px;
        }

        #yk-portal-v2 .yk-legacy-tool .download-section h2 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

        #yk-portal-v2 .yk-legacy-tool .download-section p {
            font-size: 1.2rem;
            opacity: 0.95;
            margin-bottom: 40px;
        }

        #yk-portal-v2 .yk-legacy-tool .download-btn {
            display: inline-block;
            padding: 20px 60px;
            background: white;
            color: #667eea;
            font-size: 1.3rem;
            font-weight: 700;
            border-radius: 50px;
            text-decoration: none;
            box-shadow: 0 15px 40px rgba(0,0,0,0.2);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        #yk-portal-v2 .yk-legacy-tool .download-btn::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            border-radius: 50%;
            background: rgba(102, 126, 234, 0.1);
            transform: translate(-50%, -50%);
            transition: width 0.6s ease, height 0.6s ease;
        }

        #yk-portal-v2 .yk-legacy-tool .download-btn:hover::before {
            width: 300px;
            height: 300px;
        }

        #yk-portal-v2 .yk-legacy-tool .download-btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 50px rgba(0,0,0,0.3);
            color: #667eea;
        }

        #yk-portal-v2 .yk-legacy-tool .download-btn i {
            margin-right: 10px;
        }

        #yk-portal-v2 .yk-legacy-tool .system-support {
            margin-top: 25px;
            font-size: 1rem;
            opacity: 0.9;
        }

        #yk-portal-v2 .yk-legacy-tool .system-support i {
            margin-right: 8px;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            #yk-portal-v2 .yk-legacy-tool .hero-banner {
                padding: 80px 0 60px;
            }

            #yk-portal-v2 .yk-legacy-tool .hero-banner h1 {
                font-size: 2rem;
            }

            #yk-portal-v2 .yk-legacy-tool .hero-banner .subtitle {
                font-size: 1.1rem;
            }

            #yk-portal-v2 .yk-legacy-tool .section-title {
                font-size: 2rem;
            }

            #yk-portal-v2 .yk-legacy-tool .pain-points,#yk-portal-v2 .yk-legacy-tool 
            .scenarios {
                padding: 30px 20px;
            }

            #yk-portal-v2 .yk-legacy-tool .feature-card {
                padding: 30px 20px;
            }

            #yk-portal-v2 .yk-legacy-tool .step-item {
                flex-direction: column;
                text-align: center;
            }

            #yk-portal-v2 .yk-legacy-tool .step-number {
                margin: 0 auto 20px;
            }

            #yk-portal-v2 .yk-legacy-tool .download-btn {
                padding: 15px 40px;
                font-size: 1.1rem;
            }
        }