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

        /* Page Specific Styles */
        #yk-portal-v2 .yk-legacy-tool {
            background-color: #f8f9fa; /* Light background for content area */
            line-height: 1.6;
        }
        #yk-portal-v2 .yk-legacy-tool .page-header {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.9), rgba(30, 64, 175, 0.95)), none no-repeat center center; /* Example background */
            background-size: cover;
            color: white;
            padding: 120px 0 60px; /* Adjust padding top to account for fixed navbar */
            text-align: center;
            margin-bottom: 40px;
            position: relative; /* Needed for potential pseudo-elements */
            overflow: hidden; /* Hide overflowing pseudo-elements */
        }

        #yk-portal-v2 .yk-legacy-tool .page-header h1 {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 15px;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
        }

        #yk-portal-v2 .yk-legacy-tool .page-header p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 700px;
            margin: 0 auto 20px;
        }

        #yk-portal-v2 .yk-legacy-tool .content-section {
            padding: 60px 30px;
            background-color: #ffffff;
            margin-bottom: 40px;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
        }

        #yk-portal-v2 .yk-legacy-tool .content-section h2 {
            color: var(--primary-color);
            font-weight: 700;
            margin-bottom: 30px;
            text-align: center;
            position: relative;
            padding-bottom: 15px;
        }

        #yk-portal-v2 .yk-legacy-tool .content-section h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--accent-color);
            border-radius: 2px;
        }

        #yk-portal-v2 .yk-legacy-tool .feature-icon {
            font-size: 2.5rem;
            color: var(--accent-color);
            margin-bottom: 15px;
        }

        #yk-portal-v2 .yk-legacy-tool .guide-step {
            display: flex;
            align-items: flex-start;
            margin-bottom: 20px;
            padding: 0 10px;
        }

        #yk-portal-v2 .yk-legacy-tool .guide-step .step-number {
            background-color: var(--primary-color);
            color: white;
            font-weight: bold;
            width: 35px;
            height: 35px;
            line-height: 35px;
            text-align: center;
            border-radius: 50%;
            margin-right: 15px;
            flex-shrink: 0; /* Prevent shrinking */
        }
        
        #yk-portal-v2 .yk-legacy-tool .guide-step div:nth-child(2) {
            padding-top: 5px;
            flex: 1;
        }

        #yk-portal-v2 .yk-legacy-tool .screenshot-container {
            text-align: center;
            margin-bottom: 40px;
            padding: 30px;
            background-color: #f1f1f1;
            border-radius: 8px;
        }

        #yk-portal-v2 .yk-legacy-tool .screenshot-container img {
            max-width: 100%;
            height: auto;
            border-radius: 5px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
        }
         #yk-portal-v2 .yk-legacy-tool .download-section {
            background-color: var(--primary-color);
            color: white;
            padding: 50px 30px;
            text-align: center;
             margin-bottom: 40px;
            border-radius: 8px;
        }
         #yk-portal-v2 .yk-legacy-tool .download-section h2{
             color: white;
         }
        #yk-portal-v2 .yk-legacy-tool .download-section h2::after {
             background-color: white;
        }

        #yk-portal-v2 .yk-legacy-tool .download-button {
            display: inline-block;
            background-color: white;
            color: var(--primary-color);
            padding: 15px 35px;
            font-size: 1.1rem;
            font-weight: 600;
            border-radius: 50px;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        }

        #yk-portal-v2 .yk-legacy-tool .download-button:hover {
            background-color: #f0f0f0;
            color: var(--secondary-color);
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
        }

        /* Header Styles from header.php */
        #yk-portal-v2 .yk-legacy-tool {
            --primary-color: #2563EB;
            --secondary-color: #1E40AF;
            --accent-color: #3B82F6;
            --nav-bg-color: rgba(13, 25, 49, 0.85);
        }
        #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; } }
        #yk-portal-v2 .yk-legacy-tool .row {
            margin-left: -10px;  /* 原本是-15px */
            margin-right: -10px; /* 原本是-15px */
        }
        
        #yk-portal-v2 .yk-legacy-tool .col-md-4,#yk-portal-v2 .yk-legacy-tool  .col-md-6 {
            padding-left: 15px;
            padding-right: 15px;
        }
        
        #yk-portal-v2 .yk-legacy-tool .d-flex {
            margin-bottom: 10px;
            padding: 0 5px;
        }
        #yk-portal-v2 .yk-legacy-tool main.container {
            padding-left: 20px;
            padding-right: 20px;
        }

        #yk-portal-v2 .yk-legacy-tool p {
            margin-bottom: 1rem;
        }
        
        #yk-portal-v2 .yk-legacy-tool ul.list-unstyled {
            padding-left: 10px;
        }
        
        #yk-portal-v2 .yk-legacy-tool ul.list-unstyled li {
            margin-bottom: 8px;
        }
        
        #yk-portal-v2 .yk-legacy-tool .feature-icon + h5 {
            margin-top: 10px;
            margin-bottom: 15px;
        }