/* CSS Reset & Variables */
        :root {
            --primary: #10B981; /* 鲜绿 */
            --primary-hover: #059669;
            --primary-light: #ECFDF5;
            --accent: #00E676; /* 夺目绿 */
            --dark: #0F172A;
            --dark-sub: #334155;
            --light: #F8FAFC;
            --white: #FFFFFF;
            --border: #E2E8F0;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-main);
            background-color: var(--light);
            color: var(--dark-sub);
            line-height: 1.6;
            overflow-x: hidden;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--dark);
            font-weight: 700;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* Common Container */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .section {
            padding: 5rem 0;
            border-bottom: 1px solid var(--border);
            background-color: var(--white);
        }

        .section:nth-child(even) {
            background-color: var(--light);
        }

        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }

        .section-header h2 {
            font-size: 2.25rem;
            position: relative;
            display: inline-block;
            padding-bottom: 0.75rem;
            color: var(--dark);
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
        }

        .section-header p {
            margin-top: 1rem;
            color: var(--dark-sub);
            font-size: 1.1rem;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.75rem 2rem;
            border-radius: 0.375rem;
            font-weight: 600;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-hover));
            color: var(--white);
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.6);
        }

        .btn-secondary {
            background-color: var(--primary-light);
            color: var(--primary-hover);
            border: 1px solid rgba(16, 185, 129, 0.2);
        }

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

        /* Grid Framework */
        .grid {
            display: grid;
            gap: 1.5rem;
        }

        .grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
        .grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
        .grid-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

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

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 4.5rem;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .logo-wrap img {
            height: 2.5rem;
            width: auto;
        }

        .nav-links {
            display: flex;
            gap: 1.5rem;
            align-items: center;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--dark-sub);
        }

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

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark);
        }

        /* Hero Section (No Images Allowed) */
        .hero {
            background: radial-gradient(circle at 10% 20%, rgba(16, 185, 129, 0.08) 0%, rgba(248, 250, 252, 0) 90%), var(--white);
            padding: 8rem 0 6rem;
            text-align: center;
            border-bottom: 1px solid var(--border);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 1rem;
            background-color: var(--primary-light);
            color: var(--primary-hover);
            border-radius: 9999px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(16, 185, 129, 0.2);
        }

        .hero h1 {
            font-size: 3rem;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 1.5rem;
            color: var(--dark);
        }

        .hero h1 span {
            color: var(--primary);
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.25rem;
            max-width: 800px;
            margin: 0 auto 2.5rem;
            color: var(--dark-sub);
        }

        .hero-ctas {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Data Indicator Cards */
        .data-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin-top: 4rem;
        }

        .data-card {
            background: var(--white);
            border: 1px solid var(--border);
            padding: 1.5rem;
            border-radius: 0.5rem;
            box-shadow: var(--shadow-sm);
        }

        .data-card-num {
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 0.5rem;
        }

        .data-card-label {
            font-size: 0.875rem;
            color: var(--dark-sub);
        }

        /* About Us Section */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 3rem;
            align-items: center;
        }

        .about-img-box {
            border-radius: 0.75rem;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 4px solid var(--white);
        }

        .about-content h3 {
            font-size: 1.75rem;
            margin-bottom: 1rem;
        }

        .about-features {
            margin-top: 1.5rem;
            list-style: none;
        }

        .about-features li {
            position: relative;
            padding-left: 1.5rem;
            margin-bottom: 0.75rem;
        }

        .about-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        /* AIGC Platforms Tag Cloud */
        .platform-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            justify-content: center;
            margin-top: 1.5rem;
        }

        .platform-tag {
            padding: 0.5rem 1rem;
            background-color: var(--white);
            border: 1px solid var(--border);
            border-radius: 9999px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--dark-sub);
            transition: all 0.2s ease;
        }

        .platform-tag:hover {
            border-color: var(--primary);
            background-color: var(--primary-light);
            color: var(--primary-hover);
            transform: scale(1.05);
        }

        /* Service Cards */
        .service-card {
            background-color: var(--white);
            border: 1px solid var(--border);
            padding: 2rem;
            border-radius: 0.75rem;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

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

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

        .service-icon {
            width: 3rem;
            height: 3rem;
            background-color: var(--primary-light);
            border-radius: 0.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--primary);
            font-size: 1.5rem;
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 0.75rem;
        }

        /* Steps */
        .step-timeline {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 2rem;
            position: relative;
        }

        .step-item {
            position: relative;
            background: var(--white);
            padding: 2rem;
            border-radius: 0.5rem;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .step-num {
            position: absolute;
            top: -1.25rem;
            left: 1.5rem;
            width: 2.5rem;
            height: 2.5rem;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: var(--shadow-md);
        }

        .step-item h3 {
            margin-top: 0.75rem;
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }

        /* Table Responsive Wrapper */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 0.5rem;
            border: 1px solid var(--border);
            background-color: var(--white);
            box-shadow: var(--shadow-sm);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

        table th, table td {
            padding: 1rem 1.5rem;
            border-bottom: 1px solid var(--border);
        }

        table th {
            background-color: var(--light);
            font-weight: 600;
            color: var(--dark);
        }

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

        .badge-score {
            display: inline-block;
            background-color: #FFFBEB;
            color: #D97706;
            padding: 0.25rem 0.5rem;
            border-radius: 0.25rem;
            font-weight: bold;
        }

        /* Smart Matching Form */
        .form-card {
            background-color: var(--white);
            border-radius: 0.75rem;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
            padding: 3rem;
            max-width: 800px;
            margin: 0 auto;
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin-bottom: 1.5rem;
        }

        .form-group-full {
            grid-column: span 2;
        }

        .form-label {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--dark-sub);
            margin-bottom: 0.5rem;
        }

        .form-control {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1px solid var(--border);
            border-radius: 0.375rem;
            background-color: var(--light);
            color: var(--dark);
            outline: none;
            transition: all 0.3s;
            font-size: 0.95rem;
        }

        .form-control:focus {
            border-color: var(--primary);
            background-color: var(--white);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 120px;
        }

        /* FAQ Accordion */
        .faq-accordion {
            max-width: 850px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--white);
            border: 1px solid var(--border);
            border-radius: 0.5rem;
            margin-bottom: 1rem;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .faq-trigger {
            width: 100%;
            padding: 1.25rem 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            text-align: left;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            transition: background-color 0.2s;
        }

        .faq-trigger:hover {
            background-color: var(--primary-light);
        }

        .faq-trigger svg {
            width: 1.25rem;
            height: 1.25rem;
            transition: transform 0.3s;
            color: var(--primary);
        }

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

        .faq-content p {
            padding: 0 1.5rem 1.25rem 1.5rem;
            color: var(--dark-sub);
            font-size: 0.95rem;
        }

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

        .faq-item.active .faq-trigger svg {
            transform: rotate(180deg);
        }

        /* Review Cards */
        .review-card {
            background-color: var(--white);
            border: 1px solid var(--border);
            border-radius: 0.5rem;
            padding: 2rem;
            position: relative;
            box-shadow: var(--shadow-sm);
        }

        .review-text {
            font-size: 0.95rem;
            color: var(--dark-sub);
            margin-bottom: 1.5rem;
            font-style: italic;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .review-avatar {
            width: 2.5rem;
            height: 2.5rem;
            border-radius: 50%;
            background-color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--primary-hover);
        }

        .review-meta h4 {
            font-size: 0.95rem;
            margin-bottom: 0.1rem;
        }

        .review-meta span {
            font-size: 0.8rem;
            color: var(--primary);
        }

        /* Case Gallery */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2rem;
        }

        .case-card {
            background-color: var(--white);
            border-radius: 0.75rem;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
        }

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

        .case-img {
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-info {
            padding: 1.5rem;
        }

        .case-info h3 {
            font-size: 1.15rem;
            margin-bottom: 0.5rem;
        }

        .case-info p {
            font-size: 0.9rem;
            color: var(--dark-sub);
        }

        /* Float elements */
        .float-kefu {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            z-index: 999;
            background-color: var(--white);
            box-shadow: var(--shadow-lg);
            border: 2px solid var(--primary);
            border-radius: 0.5rem;
            padding: 0.75rem;
            text-align: center;
            max-width: 130px;
            transition: transform 0.3s;
        }

        .float-kefu:hover {
            transform: translateY(-5px);
        }

        .float-kefu img {
            width: 100%;
            height: auto;
            border-radius: 0.25rem;
            margin-bottom: 0.5rem;
        }

        .float-kefu p {
            font-size: 0.8rem;
            font-weight: bold;
            color: var(--dark);
        }

        /* Footer */
        .footer {
            background-color: var(--dark);
            color: #94A3B8;
            padding: 4rem 0 2rem 0;
            border-top: 1px solid #1E293B;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-logo img {
            height: 2.5rem;
            margin-bottom: 1rem;
        }

        .footer-title {
            color: var(--white);
            font-size: 1.1rem;
            margin-bottom: 1.25rem;
            font-weight: 600;
        }

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

        .footer-links li {
            margin-bottom: 0.75rem;
        }

        .footer-links a {
            color: #94A3B8;
        }

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

        .footer-contact {
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .footer-contact strong {
            color: var(--white);
        }

        .footer-bottom {
            border-top: 1px solid #1E293B;
            padding-top: 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1.5rem;
            font-size: 0.875rem;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .friend-links a {
            color: #64748B;
        }

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

        /* Mobile adaptation overrides */
        @media (max-width: 991px) {
            .about-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .nav-links {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            .nav-links.active {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 4.5rem;
                left: 0;
                right: 0;
                background-color: var(--white);
                padding: 1.5rem;
                box-shadow: var(--shadow-lg);
                border-top: 1px solid var(--border);
            }
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.25rem;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group-full {
                grid-column: span 1;
            }
        }