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

        #yk-portal-v2 .yk-legacy-tool {
            font-family: 'Nunito', 'Microsoft YaHei', sans-serif;
        }
        
        #yk-portal-v2 .yk-legacy-tool {
            --primary-color: #2563EB;
            --secondary-color: #1E40AF;
            --accent-color: #3B82F6;
            --nav-bg-color: rgba(13, 25, 49, 0.85);
            --gradient-start: #667eea;
            --gradient-end: #764ba2;
        }
        
        #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 .brand-text {
            color: rgba(255, 255, 255, 0.95); 
            font-weight: 700; 
            font-size: 1.5rem;
            margin-left: 10px;
        }
        
        #yk-portal-v2 .yk-legacy-tool .nav-link {
            font-weight: 600;
            padding: 10px 15px !important;
            font-size: 14px;
            letter-spacing: 0.5px;
            color: rgba(255, 255, 255, 0.9) !important;
            transition: all 0.3s ease;
        }
        
        #yk-portal-v2 .yk-legacy-tool .nav-link:hover {
            color: var(--accent-color) !important;
        }

        /* Hero区域 - 现代渐变设计 */
        #yk-portal-v2 .yk-legacy-tool .hero-section {
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #1e3c72 100%);
            color: white;
            padding: 120px 0 100px;
            position: relative;
            overflow: hidden;
        }
        
        #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,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
        }

        #yk-portal-v2 .yk-legacy-tool .hero-title {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
        }

        #yk-portal-v2 .yk-legacy-tool .hero-subtitle {
            font-size: 1.25rem;
            opacity: 0.95;
            margin-bottom: 2rem;
            line-height: 1.8;
        }

        #yk-portal-v2 .yk-legacy-tool .hero-buttons .btn {
            padding: 14px 32px;
            font-weight: 600;
            border-radius: 50px;
            margin-right: 15px;
            margin-bottom: 10px;
            transition: all 0.3s ease;
        }

        #yk-portal-v2 .yk-legacy-tool .btn-hero-primary {
            background: #fff;
            color: var(--primary-color);
            border: none;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }

        #yk-portal-v2 .yk-legacy-tool .btn-hero-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.3);
            color: var(--secondary-color);
        }

        #yk-portal-v2 .yk-legacy-tool .btn-hero-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.8);
        }

        #yk-portal-v2 .yk-legacy-tool .btn-hero-outline:hover {
            background: rgba(255,255,255,0.1);
            color: #fff;
            border-color: #fff;
        }

        /* 软件截图样式 */
        #yk-portal-v2 .yk-legacy-tool .software-screenshot {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 25px 80px rgba(0,0,0,0.4);
            transition: all 0.5s ease;
        }

        #yk-portal-v2 .yk-legacy-tool .software-screenshot img {
            width: 100%;
            height: auto;
            display: block;
        }

        #yk-portal-v2 .yk-legacy-tool .software-screenshot:hover {
            transform: translateY(-10px) scale(1.02);
            box-shadow: 0 35px 100px rgba(0,0,0,0.5);
        }

        #yk-portal-v2 .yk-legacy-tool .screenshot-glow {
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
            pointer-events: none;
        }

        /* 功能特性区域 */
        #yk-portal-v2 .yk-legacy-tool .feature-section {
            padding: 100px 0;
            background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
        }

        #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: 800;
            color: #1a202c;
            margin-bottom: 1rem;
            position: relative;
            display: inline-block;
        }

        #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(90deg, var(--primary-color), var(--accent-color));
            border-radius: 2px;
        }

        #yk-portal-v2 .yk-legacy-tool .section-desc {
            font-size: 1.1rem;
            color: #64748b;
            max-width: 600px;
            margin: 20px auto 0;
        }

        /* 功能卡片 */
        #yk-portal-v2 .yk-legacy-tool .feature-card {
            background: #fff;
            border-radius: 20px;
            padding: 40px 30px;
            height: 100%;
            box-shadow: 0 10px 40px rgba(0,0,0,0.08);
            transition: all 0.4s ease;
            border: 1px solid rgba(0,0,0,0.05);
            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, var(--primary-color), var(--accent-color));
            transform: scaleX(0);
            transition: transform 0.4s ease;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 60px rgba(0,0,0,0.15);
        }

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

        #yk-portal-v2 .yk-legacy-tool .feature-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
            font-size: 1.8rem;
            color: #ffffff;
            box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }
        
        #yk-portal-v2 .yk-legacy-tool .feature-icon i {
            color: #ffffff !important;
            font-weight: 900;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card h4 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #1a202c;
            margin-bottom: 15px;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-card p {
            color: #64748b;
            line-height: 1.7;
            margin: 0;
        }

        /* 使用场景区域 */
        #yk-portal-v2 .yk-legacy-tool .scenario-section {
            padding: 100px 0;
            background: #fff;
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-card {
            background: linear-gradient(145deg, #f8fafc, #ffffff);
            border-radius: 20px;
            padding: 40px;
            height: 100%;
            box-shadow: 0 10px 40px rgba(0,0,0,0.06);
            transition: all 0.4s ease;
            border: 1px solid #e2e8f0;
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 50px rgba(0,0,0,0.12);
            border-color: var(--accent-color);
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
            font-size: 2rem;
            color: var(--primary-color);
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: #1a202c;
            margin-bottom: 15px;
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-card p {
            color: #64748b;
            margin-bottom: 20px;
            line-height: 1.7;
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-list li {
            padding: 8px 0;
            color: #475569;
            display: flex;
            align-items: center;
        }

        #yk-portal-v2 .yk-legacy-tool .scenario-list li i {
            color: #10b981;
            margin-right: 10px;
            font-size: 0.9rem;
        }

        /* 使用指南区域 */
        #yk-portal-v2 .yk-legacy-tool .guide-section {
            padding: 100px 0;
            background: linear-gradient(180deg, #f1f5f9 0%, #e2e8f0 100%);
        }

        #yk-portal-v2 .yk-legacy-tool .step-card {
            background: #fff;
            border-radius: 20px;
            padding: 35px 25px;
            text-align: center;
            box-shadow: 0 10px 40px rgba(0,0,0,0.08);
            transition: all 0.4s ease;
            position: relative;
            height: 100%;
        }

        #yk-portal-v2 .yk-legacy-tool .step-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 50px rgba(0,0,0,0.15);
        }

        #yk-portal-v2 .yk-legacy-tool .step-number {
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            width: 45px;
            height: 45px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
        }

        #yk-portal-v2 .yk-legacy-tool .step-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 25px auto 20px;
            font-size: 1.5rem;
            color: var(--primary-color);
        }

        #yk-portal-v2 .yk-legacy-tool .step-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #1a202c;
            margin-bottom: 12px;
        }

        #yk-portal-v2 .yk-legacy-tool .step-card p {
            color: #64748b;
            font-size: 0.95rem;
            line-height: 1.6;
            margin: 0;
        }

        #yk-portal-v2 .yk-legacy-tool .tips-box {
            background: linear-gradient(135deg, #dbeafe, #e0e7ff);
            border-radius: 16px;
            padding: 30px;
            margin-top: 50px;
            border-left: 5px solid var(--primary-color);
        }

        #yk-portal-v2 .yk-legacy-tool .tips-box h5 {
            color: var(--primary-color);
            font-weight: 700;
            margin-bottom: 10px;
        }

        #yk-portal-v2 .yk-legacy-tool .tips-box p {
            color: #475569;
            margin: 0;
        }

        /* 下载区域 */
        #yk-portal-v2 .yk-legacy-tool .download-section {
            padding: 100px 0;
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        #yk-portal-v2 .yk-legacy-tool .download-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.05' fill-rule='evenodd'/%3E%3C/svg%3E");
        }

        #yk-portal-v2 .yk-legacy-tool .download-card {
            background: rgba(255,255,255,0.1);
            backdrop-filter: blur(10px);
            border-radius: 24px;
            padding: 50px;
            border: 1px solid rgba(255,255,255,0.2);
        }

        #yk-portal-v2 .yk-legacy-tool .download-info {
            background: #fff;
            border-radius: 16px;
            padding: 30px 40px;
            color: #1a202c;
        }

        #yk-portal-v2 .yk-legacy-tool .download-info h5 {
            font-weight: 700;
            margin-bottom: 15px;
            color: #1a202c;
        }

        #yk-portal-v2 .yk-legacy-tool .download-info p {
            color: #64748b;
            margin: 0;
        }

        #yk-portal-v2 .yk-legacy-tool .download-info span {
            display: block;
            padding: 5px 0;
        }

        #yk-portal-v2 .yk-legacy-tool .download-info i {
            color: var(--primary-color);
            width: 20px;
        }

        #yk-portal-v2 .yk-legacy-tool .download-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            color: #fff;
            padding: 18px 45px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            text-decoration: none;
            box-shadow: 0 10px 40px rgba(37, 99, 235, 0.4);
            transition: all 0.4s ease;
        }

        #yk-portal-v2 .yk-legacy-tool .download-btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 50px rgba(37, 99, 235, 0.5);
            color: #fff;
            text-decoration: none;
        }

        #yk-portal-v2 .yk-legacy-tool .download-btn i {
            margin-right: 10px;
            font-size: 1.2rem;
        }

        /* 响应式调整 */
        @media (max-width: 991px) {
            #yk-portal-v2 .yk-legacy-tool .hero-title {
                font-size: 2.2rem;
            }
            #yk-portal-v2 .yk-legacy-tool .hero-section {
                padding: 100px 0 80px;
            }
            #yk-portal-v2 .yk-legacy-tool .section-title {
                font-size: 2rem;
            }
            #yk-portal-v2 .yk-legacy-tool .navbar-collapse {
                background-color: rgba(13, 25, 49, 0.98);
                padding: 20px;
                border-radius: 10px;
                margin-top: 15px;
            }
        }

        @media (max-width: 767px) {
            #yk-portal-v2 .yk-legacy-tool .hero-title {
                font-size: 1.8rem;
            }
            #yk-portal-v2 .yk-legacy-tool .hero-subtitle {
                font-size: 1rem;
            }
            #yk-portal-v2 .yk-legacy-tool .feature-section,#yk-portal-v2 .yk-legacy-tool  .scenario-section,#yk-portal-v2 .yk-legacy-tool  .guide-section,#yk-portal-v2 .yk-legacy-tool  .download-section {
                padding: 60px 0;
            }
            #yk-portal-v2 .yk-legacy-tool .download-card {
                padding: 30px 20px;
            }
            #yk-portal-v2 .yk-legacy-tool .download-info {
                padding: 20px;
            }
        }