/* 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;
            }
        }

        /* 内容部分样式 */
        #yk-portal-v2 .yk-legacy-tool .tool-header {
            background: linear-gradient(135deg, #0f2847 0%, #1e3a5f 100%);
            color: white;
            padding: 120px 0 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        #yk-portal-v2 .yk-legacy-tool .tool-header::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: none;
            opacity: 0.1;
            pointer-events: none;
        }

        #yk-portal-v2 .yk-legacy-tool .tool-header h1 {
            font-weight: 800;
            font-size: 2.8rem;
            margin-bottom: 20px;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        }

        #yk-portal-v2 .yk-legacy-tool .tool-header p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
            opacity: 0.9;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-section {
            padding: 80px 0;
            background-color: #f8fafc;
        }

        #yk-portal-v2 .yk-legacy-tool .section-title {
            text-align: center;
            margin-bottom: 60px;
            position: relative;
        }

        #yk-portal-v2 .yk-legacy-tool .section-title h2 {
            font-weight: 700;
            color: #1a202c;
            position: relative;
            display: inline-block;
        }

        #yk-portal-v2 .yk-legacy-tool .section-title h2::after {
            content: "";
            position: absolute;
            width: 60%;
            height: 3px;
            background: var(--primary-color);
            left: 20%;
            bottom: -15px;
            border-radius: 3px;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card {
            background-color: white;
            border-radius: 10px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            height: 100%;
            transition: all 0.3s ease;
            position: relative;
            z-index: 1;
            overflow: hidden;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
            z-index: -1;
            transition: height 0.3s ease;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card:hover::before {
            height: 10px;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-icon {
            height: 60px;
            width: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(59, 130, 246, 0.1) 100%);
            border-radius: 50%;
            margin-bottom: 20px;
            color: var(--primary-color);
            font-size: 24px;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 15px;
            color: #2d3748;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card p {
            color: #4a5568;
            margin-bottom: 0;
            line-height: 1.6;
        }

        #yk-portal-v2 .yk-legacy-tool .screenshot-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
        }

        #yk-portal-v2 .yk-legacy-tool .screenshot-box {
            background-color: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
            position: relative;
        }

        #yk-portal-v2 .yk-legacy-tool .screenshot-box img {
            width: 100%;
            display: block;
            transition: transform 0.3s ease;
        }

        #yk-portal-v2 .yk-legacy-tool .screenshot-box:hover img {
            transform: scale(1.02);
        }

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

        #yk-portal-v2 .yk-legacy-tool .step-card {
            display: flex;
            margin-bottom: 30px;
        }

        #yk-portal-v2 .yk-legacy-tool .step-number {
            width: 50px;
            height: 50px;
            min-width: 50px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.3rem;
            margin-right: 20px;
            box-shadow: 0 10px 15px rgba(37, 99, 235, 0.2);
        }

        #yk-portal-v2 .yk-legacy-tool .step-content {
            padding-top: 5px;
        }

        #yk-portal-v2 .yk-legacy-tool .step-content h3 {
            margin-bottom: 15px;
            font-weight: 600;
            color: #2d3748;
        }

        #yk-portal-v2 .yk-legacy-tool .step-content p {
            color: #4a5568;
            line-height: 1.6;
        }

        #yk-portal-v2 .yk-legacy-tool .download-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #0f2847 0%, #1e3a5f 100%);
            color: white;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

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

        #yk-portal-v2 .yk-legacy-tool .btn-download {
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
            color: white;
            border: none;
            padding: 15px 30px;
            font-size: 1.1rem;
            font-weight: 600;
            border-radius: 50px;
            box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
            transition: all 0.3s ease;
            margin-top: 30px;
            text-decoration: none;
            display: inline-block;
        }

        #yk-portal-v2 .yk-legacy-tool .btn-download:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 25px rgba(37, 99, 235, 0.4);
            color: white;
            text-decoration: none;
        }

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

        @media (max-width: 767px) {
            #yk-portal-v2 .yk-legacy-tool .tool-header h1 {
                font-size: 2.2rem;
            }
            #yk-portal-v2 .yk-legacy-tool .feature-section,#yk-portal-v2 .yk-legacy-tool  .screenshot-section,#yk-portal-v2 .yk-legacy-tool  .usage-section,#yk-portal-v2 .yk-legacy-tool  .download-section {
                padding: 60px 0;
            }
            #yk-portal-v2 .yk-legacy-tool .step-card {
                flex-direction: column;
            }
            #yk-portal-v2 .yk-legacy-tool .step-number {
                margin-bottom: 15px;
                margin-right: 0;
            }
        }