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

        #yk-portal-v2 .yk-legacy-tool {
            font-family: 'Nunito', sans-serif;
        }
        
        /* 主色调来源于logo，假设是蓝色系 */
        #yk-portal-v2 .yk-legacy-tool {
            --primary-color: #2563EB; /* 主要蓝色 - 根据实际logo颜色调整 */
            --secondary-color: #1E40AF; /* 深蓝色 - 根据实际logo颜色调整 */
            --accent-color: #3B82F6; /* 亮蓝色 - 根据实际logo颜色调整 */
            --nav-bg-color: rgba(13, 25, 49, 0.85); /* 深蓝背景 - 根据实际logo颜色调整 */
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar {
            background-color: var(--nav-bg-color);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            padding: 10px 0;
            transition: all 0.4s ease;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-scrolled {
            padding: 8px 0;
            background-color: rgba(13, 25, 49, 0.95);
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-brand {
            display: flex;
            align-items: center;
            padding: 0;
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-brand img {
            height: 40px;
            transition: all 0.3s ease;
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-scrolled .navbar-brand img {
            height: 36px;
        }
        
        #yk-portal-v2 .yk-legacy-tool .brand-text {
            color: rgba(255, 255, 255, 0.95); 
            font-weight: 700; 
            font-size: 1.5rem;
            margin-left: 10px;
            transition: all 0.3s ease;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-scrolled .brand-text {
            font-size: 1.3rem;
        }
        
        #yk-portal-v2 .yk-legacy-tool .nav-item {
            position: relative;
            margin: 0 5px;
        }
        
        #yk-portal-v2 .yk-legacy-tool .nav-link {
            font-weight: 600;
            position: relative;
            padding: 10px 0 !important;
            margin: 0 15px;
            text-transform: uppercase;
            font-size: 14px;
            letter-spacing: 1px;
            transition: all 0.3s ease;
            color: rgba(255, 255, 255, 0.9) !important;
        }
        
        #yk-portal-v2 .yk-legacy-tool .nav-link:before {
            content: "";
            position: absolute;
            width: 5px;
            height: 5px;
            border-radius: 50%;
            bottom: 0;
            left: 50%;
            background-color: var(--accent-color);
            transform: translateX(-50%) scale(0);
            transition: transform 0.3s ease;
        }
        
        #yk-portal-v2 .yk-legacy-tool .nav-link:hover:before,#yk-portal-v2 .yk-legacy-tool 
        .nav-item.active .nav-link:before {
            transform: translateX(-50%) scale(1);
        }
        
        #yk-portal-v2 .yk-legacy-tool .nav-item.active .nav-link {
            color: var(--accent-color) !important;
            text-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
        }
        
        #yk-portal-v2 .yk-legacy-tool .nav-item:hover .nav-link {
            color: #fff !important;
            transform: translateY(-3px);
            text-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler {
            border: none;
            outline: none;
            padding: 0;
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler-icon {
            background-image: none;
            position: relative;
            width: 24px;
            height: 17px;
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler-icon:before,#yk-portal-v2 .yk-legacy-tool 
        .navbar-dark .navbar-toggler-icon:after,#yk-portal-v2 .yk-legacy-tool 
        .navbar-dark .navbar-toggler-icon span {
            width: 100%;
            height: 2px;
            background-color: #fff;
            border-radius: 3px;
            position: absolute;
            left: 0;
            transition: all .3s ease;
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler-icon:before,#yk-portal-v2 .yk-legacy-tool 
        .navbar-dark .navbar-toggler-icon:after {
            content: '';
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler-icon:before {
            top: 0;
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler-icon span {
            top: 50%;
            transform: translateY(-50%);
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler-icon:after {
            bottom: 0;
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon:before {
            transform: translateY(7px) rotate(45deg);
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon:after {
            transform: translateY(-7px) rotate(-45deg);
        }
        
        #yk-portal-v2 .yk-legacy-tool .navbar-dark .navbar-toggler[aria-expanded="true"] .navbar-toggler-icon span {
            opacity: 0;
        }
        
        @media (max-width: 991px) {
            #yk-portal-v2 .yk-legacy-tool .navbar-collapse {
                background-color: rgba(13, 25, 49, 0.98);
                padding: 20px;
                border-radius: 10px;
                margin-top: 15px;
                box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            }
            
            #yk-portal-v2 .yk-legacy-tool .navbar-nav .nav-item {
                margin: 5px 0;
            }
            
            #yk-portal-v2 .yk-legacy-tool .navbar-brand img {
                height: 36px;
            }
            
            #yk-portal-v2 .yk-legacy-tool .brand-text {
                font-size: 1.3rem;
            }
        }
        
        @media (max-width: 575px) {
            #yk-portal-v2 .yk-legacy-tool .navbar-brand img {
                height: 32px;
            }
            
            #yk-portal-v2 .yk-legacy-tool .brand-text {
                font-size: 1.2rem;
            }
        }

        /* 工具专用样式 */
        #yk-portal-v2 .yk-legacy-tool .hero-section {
            background: linear-gradient(135deg, #1a237e, #0d47a1);
            color: white;
            padding: 80px 0;
            margin-top: 70px;
            position: relative;
            overflow: hidden;
        }

        #yk-portal-v2 .yk-legacy-tool .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: none;
            opacity: 0.1;
        }

        #yk-portal-v2 .yk-legacy-tool .hero-title {
            font-weight: 800;
            margin-bottom: 20px;
            font-size: 2.5rem;
        }

        #yk-portal-v2 .yk-legacy-tool .hero-description {
            font-size: 1.2rem;
            margin-bottom: 30px;
            max-width: 700px;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-section {
            padding: 80px 0;
            background-color: #f8f9fa;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card {
            background: white;
            border-radius: 10px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            height: 100%;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        }

        #yk-portal-v2 .yk-legacy-tool .feature-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, #2563EB, #1E40AF);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-icon i {
            font-size: 30px;
            color: white;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-title {
            font-weight: 700;
            margin-bottom: 15px;
            color: #333;
        }

        #yk-portal-v2 .yk-legacy-tool .usage-section {
            padding: 80px 0;
        }

        #yk-portal-v2 .yk-legacy-tool .usage-steps {
            counter-reset: step-counter;
            padding-left: 0;
            list-style-type: none;
        }

        #yk-portal-v2 .yk-legacy-tool .usage-step {
            position: relative;
            margin-bottom: 30px;
            padding-left: 60px;
        }

        #yk-portal-v2 .yk-legacy-tool .usage-step::before {
            content: counter(step-counter);
            counter-increment: step-counter;
            position: absolute;
            left: 0;
            top: 0;
            width: 45px;
            height: 45px;
            background: linear-gradient(135deg, #2563EB, #1E40AF);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 20px;
        }

        #yk-portal-v2 .yk-legacy-tool .usage-step-title {
            font-weight: 700;
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: #333;
        }

        #yk-portal-v2 .yk-legacy-tool .usage-step-description {
            color: #555;
            line-height: 1.6;
        }

        #yk-portal-v2 .yk-legacy-tool .download-section {
            background: linear-gradient(135deg, #1a237e, #0d47a1);
            padding: 80px 0;
            color: white;
            text-align: center;
        }

        #yk-portal-v2 .yk-legacy-tool .download-title {
            font-weight: 800;
            margin-bottom: 20px;
        }

        #yk-portal-v2 .yk-legacy-tool .download-description {
            font-size: 1.1rem;
            margin-bottom: 30px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        #yk-portal-v2 .yk-legacy-tool .download-btn {
            background: white;
            color: #0d47a1;
            font-weight: 700;
            padding: 15px 30px;
            border-radius: 50px;
            text-decoration: none;
            display: inline-block;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }

        #yk-portal-v2 .yk-legacy-tool .download-btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
            background: #f8f9fa;
            text-decoration: none;
            color: #0d47a1;
        }

        #yk-portal-v2 .yk-legacy-tool .software-img {
            border-radius: 10px;
            box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
            transition: all 0.3s ease;
            max-width: 100%;
        }

        #yk-portal-v2 .yk-legacy-tool .software-img:hover {
            transform: scale(1.03);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
        }

        #yk-portal-v2 .yk-legacy-tool .section-title {
            text-align: center;
            margin-bottom: 50px;
            position: relative;
        }

        #yk-portal-v2 .yk-legacy-tool .section-title h2 {
            font-weight: 800;
            color: #333;
            display: inline-block;
            position: relative;
            z-index: 1;
        }

        #yk-portal-v2 .yk-legacy-tool .section-title h2::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -10px;
            width: 50px;
            height: 3px;
            background: #2563EB;
            left: 50%;
            transform: translateX(-50%);
        }