:root {
            --primary: #FFD100;
            --primary-hover: #F2C200;
            --primary-light: #FFFBE6;
            --dark: #1E1F22;
            --dark-light: #2B2D31;
            --text-dark: #111111;
            --text-gray: #555555;
            --bg-light: #FAFAFA;
            --white: #FFFFFF;
            --border-color: #EAEAEA;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            --transition: all 0.3s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            color: var(--text-dark);
            background-color: var(--bg-light);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        /* Base Grid & Layout */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
            background-color: var(--white);
        }

        section.bg-light-sec {
            background-color: var(--bg-light);
        }

        /* Typography */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
            color: var(--text-dark);
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        .section-header p {
            margin-top: 15px;
            color: var(--text-gray);
            font-size: 16px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 6px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--text-dark);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
        }

        .btn-outline {
            border: 2px solid var(--text-dark);
            color: var(--text-dark);
            background: transparent;
        }

        .btn-outline:hover {
            background-color: var(--text-dark);
            color: var(--white);
            transform: translateY(-2px);
        }

        /* Header Navigation */
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo-box {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo-box img {
            height: 40px;
            width: auto;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.5px;
        }

        .nav-menu {
            display: flex;
            gap: 20px;
            list-style: none;
        }

        .nav-menu a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-dark);
            padding: 5px 10px;
            border-radius: 4px;
        }

        .nav-menu a:hover {
            background-color: var(--primary-light);
            color: var(--text-dark);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: none;
        }

        .mobile-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-dark);
            transition: var(--transition);
        }

        /* Hero Section (No Image) */
        .hero {
            background: linear-gradient(135deg, #FFFDF0 0%, #FFFFFF 100%);
            padding: 100px 0 80px 0;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255,209,0,0.15) 0%, rgba(255,255,255,0) 70%);
            z-index: 1;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-tag {
            display: inline-block;
            background-color: var(--primary-light);
            border: 1px solid var(--primary);
            color: var(--text-dark);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 25px;
        }

        .hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-dark);
            margin-bottom: 25px;
        }

        .hero h1 span {
            background: linear-gradient(90deg, #FFD100, #F2C200);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-gray);
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        /* Data Metrics Grid */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 60px;
        }

        .metric-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            padding: 30px 20px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .metric-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }

        .metric-card .num {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 2px;
        }

        .metric-card .num span {
            color: var(--primary-hover);
        }

        .metric-card .label {
            font-size: 14px;
            color: var(--text-gray);
            font-weight: 500;
        }

        /* Platforms Tag Cloud */
        .platform-logos {
            margin-top: 50px;
            background: var(--white);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .platform-logos p {
            font-size: 14px;
            color: var(--text-gray);
            margin-bottom: 20px;
            font-weight: 600;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .tag-item {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 4px;
            font-size: 13px;
            color: var(--text-dark);
            font-weight: 500;
            transition: var(--transition);
        }

        .tag-item:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
        }

        /* Services的能力卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 35px 25px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background-color: transparent;
            transition: var(--transition);
        }

        .service-card:hover::before {
            background-color: var(--primary);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            border-color: var(--primary-hover);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            background-color: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.6;
        }

        /* Workflow Steps */
        .workflow-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .workflow-step {
            background: var(--white);
            border: 1px solid var(--border-color);
            padding: 30px 20px;
            border-radius: 8px;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 36px;
            height: 36px;
            background-color: var(--primary);
            color: var(--text-dark);
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 15px;
            font-size: 16px;
        }

        .workflow-step h3 {
            font-size: 18px;
            margin-bottom: 10px;
            font-weight: 700;
        }

        .workflow-step p {
            font-size: 13px;
            color: var(--text-gray);
        }

        /* Evaluation Table */
        .table-wrapper {
            width: 100%;
            overflow-x: auto;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background: var(--white);
        }

        .eval-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

        .eval-table th, .eval-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

        .eval-table th {
            background-color: var(--bg-light);
            font-weight: 700;
        }

        .eval-table tr:last-child td {
            border-bottom: none;
        }

        .eval-table tr.highlight {
            background-color: var(--primary-light);
        }

        .eval-table td strong {
            color: #E2B000;
        }

        /* Score Badge */
        .score-badge {
            background: var(--primary);
            color: var(--text-dark);
            padding: 20px;
            border-radius: 12px;
            text-align: center;
            margin-bottom: 30px;
            max-width: 400px;
            margin-left: auto;
            margin-right: auto;
            box-shadow: var(--shadow);
        }

        .score-num {
            font-size: 48px;
            font-weight: 900;
            line-height: 1;
        }

        .score-stars {
            color: var(--text-dark);
            font-size: 20px;
            margin: 5px 0;
        }

        /* Training section list */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .training-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            padding: 20px 15px;
            border-radius: 8px;
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .training-card h3 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .training-card p {
            font-size: 12px;
            color: var(--text-gray);
        }

        /* Cases with Images */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .case-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: #f0f0f0;
            position: relative;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .case-card:hover .case-img-container img {
            transform: scale(1.05);
        }

        .case-info {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            font-size: 11px;
            background: var(--primary-light);
            color: var(--text-dark);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .case-info h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .case-info p {
            font-size: 13px;
            color: var(--text-gray);
        }

        /* Form section */
        .form-section {
            background: linear-gradient(135deg, #FFFBE6 0%, #FFFFFF 100%);
        }

        .form-container {
            max-width: 600px;
            margin: 0 auto;
            background: var(--white);
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
        }

        .form-group {
            margin-bottom: 20px;
            text-align: left;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-dark);
        }

        .form-group input, .form-group select, .form-group textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 209, 0, 0.15);
        }

        /* FAQ Accordion */
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: 6px;
            margin-bottom: 15px;
            background: var(--white);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 18px 24px;
            background: var(--white);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-header h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0;
            padding-right: 15px;
        }

        .faq-icon {
            font-size: 18px;
            transition: var(--transition);
            font-weight: bold;
            color: var(--text-gray);
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: var(--bg-light);
        }

        .faq-content-inner {
            padding: 18px 24px;
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.6;
            border-top: 1px solid var(--border-color);
        }

        .faq-item.active {
            border-color: var(--primary);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            color: var(--primary-hover);
        }

        .faq-item.active .faq-content {
            max-height: 300px;
        }

        /* Troubleshooting & Glossary */
        .support-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .support-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 8px;
        }

        .support-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .support-list {
            list-style: none;
        }

        .support-list li {
            font-size: 14px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .support-list li:last-child {
            border-bottom: none;
        }

        .support-list strong {
            color: var(--text-dark);
        }

        /* Knowledge Base Articles */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .article-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 6px;
            font-size: 13px;
        }

        .article-card a {
            color: var(--text-dark);
            font-weight: 600;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }

        .article-card a:hover {
            color: var(--primary-hover);
        }

        .article-date {
            color: var(--text-gray);
            font-size: 11px;
        }

        /* Testimonials */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .testi-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 8px;
            position: relative;
        }

        .testi-stars {
            color: var(--primary-hover);
            margin-bottom: 12px;
            font-size: 14px;
        }

        .testi-card p {
            font-size: 14px;
            color: var(--text-gray);
            font-style: italic;
            margin-bottom: 20px;
        }

        .testi-user {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testi-user-info h4 {
            font-size: 14px;
            font-weight: 700;
        }

        .testi-user-info span {
            font-size: 12px;
            color: var(--text-gray);
        }

        /* Contact Details */
        .contact-box {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            margin-top: 40px;
        }

        .contact-info-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .contact-info-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 8px;
        }

        .contact-info-card h4 {
            margin-bottom: 8px;
            font-size: 15px;
            color: var(--text-gray);
        }

        .contact-info-card p {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
        }

        .qr-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 8px;
            text-align: center;
        }

        .qr-card img {
            width: 140px;
            height: 140px;
            margin: 0 auto 15px auto;
            display: block;
        }

        .qr-card p {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
        }

        /* Footer */
        footer {
            background-color: var(--dark);
            color: #CCCCCC;
            padding: 60px 0 30px 0;
            font-size: 14px;
            border-top: 4px solid var(--primary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: var(--white);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 30px;
            height: 2px;
            background-color: var(--primary);
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: #CCCCCC;
        }

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 5px;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 15px;
        }

        .friend-links a {
            color: #999999;
            font-size: 12px;
            background-color: var(--dark-light);
            padding: 4px 10px;
            border-radius: 4px;
            transition: var(--transition);
        }

        .friend-links a:hover {
            background-color: var(--primary);
            color: var(--text-dark);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: #888888;
        }

        /* Floating Contact Widget */
        .floating-widget {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .floating-btn {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: var(--text-dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
            cursor: pointer;
            position: relative;
            border: none;
            transition: var(--transition);
        }

        .floating-btn:hover {
            background-color: var(--primary-hover);
            transform: translateY(-3px);
        }

        .floating-qr-hover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: var(--white);
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 8px;
            box-shadow: var(--shadow);
            display: none;
            width: 160px;
            text-align: center;
        }

        .floating-qr-hover img {
            width: 130px;
            height: 130px;
            display: block;
            margin-bottom: 8px;
        }

        .floating-qr-hover span {
            font-size: 12px;
            color: var(--text-dark);
            font-weight: bold;
        }

        .floating-btn:hover .floating-qr-hover {
            display: block;
        }

        /* Responsive Design */
        @media (max-width: 1024px) {
            .services-grid, .workflow-timeline, .cases-grid, .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 60px 0;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow);
            }
            .nav-menu.active {
                display: flex;
            }
            .mobile-toggle {
                display: flex;
            }
            .hero h1 {
                font-size: 32px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid, .workflow-timeline, .cases-grid, .testimonials-grid, .support-grid, .contact-box {
                grid-template-columns: 1fr;
            }
            .training-grid, .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            .metrics-grid, .training-grid, .articles-grid {
                grid-template-columns: 1fr;
            }
            .contact-info-grid {
                grid-template-columns: 1fr;
            }
            .btn {
                width: 100%;
            }
            .hero-buttons {
                flex-direction: column;
            }
        }