:root {
            --primary: #00f2fe;
            --primary-dark: #0072ff;
            --accent: #ff0844;
            --accent-glow: rgba(255, 8, 68, 0.4);
            --bg-base: #f8fafc;
            --bg-card: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
            --gradient-primary: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
            --gradient-accent: linear-gradient(135deg, #ff0844 0%, #ffb199 100%);
        }

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

        html {
            font-family: var(--font-sans);
            scroll-behavior: smooth;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

        /* Container Standard */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Typography */
        h1, h2, h3, h4 {
            font-weight: 800;
            line-height: 1.25;
            color: #0f172a;
        }

        p {
            color: var(--text-muted);
        }

        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-title h2 {
            font-size: 2.25rem;
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
            color: #0f172a;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--gradient-primary);
            border-radius: 2px;
        }

        .section-title p {
            margin-top: 12px;
            font-size: 1.1rem;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 8px;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            text-decoration: none;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: var(--gradient-primary);
            color: #0f172a;
            box-shadow: 0 4px 14px rgba(0, 242, 254, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 242, 254, 0.5);
        }

        .btn-accent {
            background: var(--gradient-accent);
            color: #ffffff;
            box-shadow: 0 4px 14px var(--accent-glow);
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 8, 68, 0.6);
        }

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

        .btn-outline:hover {
            background: #f1f5f9;
            border-color: var(--text-muted);
            transform: translateY(-2px);
        }

        /* Header & Navigation */
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ai-page-logo {
            height: 40px;
            width: auto;
        }

        .brand-text {
            font-size: 1.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, #0072ff 0%, #00f2fe 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-menu a {
            text-decoration: none;
            color: var(--text-main);
            font-size: 0.95rem;
            font-weight: 500;
            transition: color 0.2s ease;
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-main);
            transition: all 0.3s ease;
        }

        /* Hero Section (No Image) */
        .hero {
            background: var(--gradient-hero);
            color: #ffffff;
            padding: 100px 0 120px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        /* Custom decorative background vectors */
        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            left: -10%;
            width: 50%;
            height: 80%;
            background: radial-gradient(circle, rgba(0, 242, 254, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            right: -10%;
            width: 50%;
            height: 80%;
            background: radial-gradient(circle, rgba(255, 8, 68, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero h1 {
            font-size: 3rem;
            max-width: 900px;
            margin: 0 auto 24px;
            color: #ffffff;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .hero h1 span {
            background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.25rem;
            color: #94a3b8;
            max-width: 700px;
            margin: 0 auto 40px;
        }

        .hero-btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 60px;
        }

        .hero-btn-group .btn {
            min-width: 160px;
        }

        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .metric-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px;
            border-radius: 12px;
            backdrop-filter: blur(8px);
            transition: transform 0.3s ease;
        }

        .metric-card:hover {
            transform: translateY(-5px);
            border-color: rgba(0, 242, 254, 0.4);
        }

        .metric-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .metric-label {
            font-size: 0.875rem;
            color: #cbd5e1;
        }

        /* Generic Section padding */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .bg-light {
            background-color: #f1f5f9;
        }

        /* About Section */
        .about-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }

        .about-content h3 {
            font-size: 1.75rem;
            margin-bottom: 16px;
        }

        .about-content p {
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

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

        .about-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            font-weight: 500;
        }

        .about-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 0;
            color: var(--primary-dark);
            font-weight: 900;
        }

        .network-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 32px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

        .network-badge {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(0, 242, 254, 0.1);
            color: var(--primary-dark);
            border-radius: 20px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        /* AIGC Service System Cards */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 32px;
            border-radius: 16px;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--gradient-primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(0, 242, 254, 0.15);
            border-color: rgba(0, 242, 254, 0.3);
        }

        .service-card:hover::before {
            transform: scaleX(1);
        }

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.35rem;
            margin-bottom: 12px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .service-tags span {
            font-size: 0.75rem;
            background: #f1f5f9;
            padding: 4px 8px;
            border-radius: 4px;
            color: var(--text-muted);
        }

        /* Workflow Step */
        .workflow-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            margin-top: 40px;
        }

        .workflow-step {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 32px 24px;
            border-radius: 16px;
            z-index: 2;
        }

        .step-num {
            width: 40px;
            height: 40px;
            background: var(--gradient-primary);
            color: #0f172a;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 20px;
        }

        .workflow-step h3 {
            font-size: 1.25rem;
            margin-bottom: 8px;
        }

        /* Solutions Section */
        .solutions-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .solution-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .solution-banner {
            height: 180px;
            background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 1.5rem;
            font-weight: 700;
            padding: 24px;
            text-align: center;
        }

        .solution-body {
            padding: 32px;
            flex-grow: 1;
        }

        .solution-body h3 {
            margin-bottom: 12px;
            font-size: 1.35rem;
        }

        /* Comparison Table & Price */
        .comparison-table-wrapper {
            width: 100%;
            overflow-x: auto;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
            margin-bottom: 48px;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

        .comparison-table th, .comparison-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
        }

        .comparison-table th {
            background-color: #f8fafc;
            font-weight: 700;
        }

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

        .recommend-col {
            background-color: rgba(0, 242, 254, 0.05);
            font-weight: 600;
        }

        .star-rating {
            color: #fbbf24;
            font-size: 1.25rem;
        }

        /* Software Intro Grid */
        .software-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .software-tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }

        .tag-pill {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.875rem;
            color: var(--text-main);
            font-weight: 500;
            transition: all 0.2s ease;
        }

        .tag-pill:hover {
            border-color: var(--primary-dark);
            background: rgba(0, 242, 254, 0.05);
        }

        /* Cases Grid */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .case-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.06);
        }

        .case-img-holder {
            width: 100%;
            height: 200px;
            overflow: hidden;
            position: relative;
            background: #e2e8f0;
        }

        .case-img-holder img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

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

        .case-body {
            padding: 24px;
        }

        .case-body h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }

        /* Testimonials */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 32px;
            border-radius: 16px;
            position: relative;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .testimonial-text {
            font-size: 0.95rem;
            color: var(--text-main);
            margin-bottom: 24px;
            font-style: italic;
        }

        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .user-avatar-placeholder {
            width: 44px;
            height: 44px;
            background: var(--gradient-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #0f172a;
        }

        .user-info h4 {
            font-size: 0.95rem;
            margin: 0;
        }

        .user-info p {
            font-size: 0.75rem;
            margin: 0;
        }

        /* FAQ Accordion */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            border: 1px solid var(--border-color);
            background: var(--bg-card);
            border-radius: 8px;
            overflow: hidden;
            transition: border-color 0.2s ease;
        }

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

        .faq-header {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            font-weight: 600;
        }

        .faq-header span {
            font-size: 1.05rem;
            color: #0f172a;
        }

        .faq-icon {
            font-size: 1.25rem;
            transition: transform 0.2s ease;
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            background: #fafafa;
        }

        .faq-content {
            padding: 20px 24px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
        }

        .faq-item.active .faq-body {
            max-height: 200px;
        }

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

        /* Self-Troubleshoot Widget */
        .troubleshoot-widget {
            max-width: 800px;
            margin: 0 auto;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            overflow: hidden;
        }

        .troubleshoot-tabs {
            display: flex;
            border-bottom: 1px solid var(--border-color);
            background: #f8fafc;
        }

        .tab-btn {
            flex: 1;
            padding: 16px;
            border: none;
            background: transparent;
            font-weight: 600;
            color: var(--text-muted);
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .tab-btn.active {
            color: var(--primary-dark);
            background: #ffffff;
            box-shadow: inset 0 -2px 0 var(--primary-dark);
        }

        .troubleshoot-content {
            padding: 32px;
        }

        .troubleshoot-pane {
            display: none;
        }

        .troubleshoot-pane.active {
            display: block;
        }

        /* Knowledge Base / News */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 12px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-card h3 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .news-card .btn {
            margin-top: auto;
            align-self: flex-start;
            padding: 8px 16px;
            font-size: 0.875rem;
        }

        /* Contact & Form Section */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 48px;
            align-items: start;
        }

        .contact-info-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 16px;
        }

        .info-item {
            margin-bottom: 24px;
        }

        .info-item h4 {
            font-size: 0.875rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .info-item p {
            font-size: 1.1rem;
            color: #0f172a;
            font-weight: 600;
        }

        .qr-codes {
            display: flex;
            gap: 24px;
            margin-top: 32px;
        }

        .qr-item {
            text-align: center;
        }

        .qr-item img {
            width: 120px;
            height: 120px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 8px;
            background: #ffffff;
            margin-bottom: 8px;
        }

        .qr-item span {
            display: block;
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* Form styling */
        .match-form {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

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

        .form-group label {
            display: block;
            font-size: 0.875rem;
            font-weight: 600;
            color: #0f172a;
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            font-size: 0.95rem;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            outline: none;
            transition: all 0.2s ease;
        }

        .form-control:focus {
            border-color: var(--primary-dark);
            box-shadow: 0 0 0 3px rgba(0, 242, 254, 0.15);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 100px;
        }

        /* Float Widget */
        .float-bar {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            cursor: pointer;
            transition: all 0.2s ease;
            text-decoration: none;
            position: relative;
        }

        .float-btn:hover {
            background: var(--bg-base);
            transform: translateY(-2px);
        }

        .float-btn svg {
            width: 22px;
            height: 22px;
            fill: var(--text-main);
        }

        .float-btn.kefu-btn svg {
            fill: var(--primary-dark);
        }

        .kefu-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            width: 200px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            border-radius: 12px;
            padding: 16px;
            text-align: center;
            visibility: hidden;
            opacity: 0;
            transform: translateY(10px);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .kefu-popover img {
            width: 140px;
            height: 140px;
            margin-bottom: 8px;
        }

        .kefu-popover p {
            font-size: 0.75rem;
            margin: 0;
        }

        .float-btn.kefu-btn:hover .kefu-popover {
            visibility: visible;
            opacity: 1;
            transform: translateY(0);
        }

        /* Footer */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 0.9rem;
            border-top: none;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-logo-desc img {
            height: 40px;
            margin-bottom: 16px;
        }

        .footer-links h4 {
            color: #ffffff;
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: #ffffff;
        }

        .friend-links {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            margin-bottom: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .friend-links span {
            font-size: 0.8rem;
            color: #64748b;
        }

        .friend-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.8rem;
            transition: color 0.2s ease;
        }

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

        .copyright-bar {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
        }

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

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #ffffff;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }

            .nav-menu.active {
                display: flex;
            }

            .nav-toggle {
                display: flex;
            }

            .hero h1 {
                font-size: 2.25rem;
            }

            .hero-metrics {
                grid-template-columns: repeat(2, 1fr);
            }

            .about-grid, .software-grid, .solutions-grid, .contact-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .workflow-timeline, .cases-grid, .testimonials-grid, .news-grid {
                grid-template-columns: 1fr;
            }

            .form-row {
                grid-template-columns: 1fr;
                gap: 0;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .copyright-bar {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }