/* CSS Reset & Variable Setup (多彩涂鸦风/Neobrutalism 科技融合) */
        :root {
            --bg-color: #fbf9f5;
            --text-color: #1a1a1a;
            --text-muted: #555555;
            --primary: #ffde47; /* 醒目黄 */
            --secondary: #ff7676; /* 醒目红 */
            --accent: #5ef1ff; /* 醒目蓝 */
            --green: #5effa2; /* 醒目绿 */
            --border-style: 3px solid #1a1a1a;
            --shadow: 4px 4px 0px #1a1a1a;
            --shadow-hover: 7px 7px 0px #1a1a1a;
            --container-max: 1200px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-color);
            color: var(--text-color);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            color: var(--text-color);
            text-decoration: none;
            transition: all 0.2s ease;
        }

        /* Base Container */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Doodle Style Helper Classes */
        .doodle-card {
            background: #ffffff;
            border: var(--border-style);
            border-radius: 16px 8px 16px 12px;
            box-shadow: var(--shadow);
            padding: 30px;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            position: relative;
            overflow: hidden;
        }
        .doodle-card:hover {
            transform: translate(-3px, -3px);
            box-shadow: var(--shadow-hover);
        }

        .badge {
            display: inline-block;
            padding: 6px 12px;
            font-weight: bold;
            border: 2px solid #1a1a1a;
            border-radius: 30px;
            font-size: 0.85rem;
            margin-bottom: 12px;
            background: var(--accent);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-weight: bold;
            border: var(--border-style);
            border-radius: 50px;
            box-shadow: var(--shadow);
            cursor: pointer;
            transition: transform 0.1s ease, box-shadow 0.1s ease;
            font-size: 1rem;
            text-align: center;
        }
        .btn:active {
            transform: translate(2px, 2px);
            box-shadow: 2px 2px 0px #1a1a1a;
        }
        .btn-primary { background-color: var(--primary); }
        .btn-secondary { background-color: var(--accent); }
        .btn-green { background-color: var(--green); }

        /* Typography */
        h1, h2, h3, h4 {
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 15px;
        }
        h2 {
            font-size: 2.2rem;
            position: relative;
            display: inline-block;
            margin-bottom: 40px;
        }
        h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 100%;
            height: 10px;
            background: var(--primary);
            z-index: -1;
            border-radius: 10px;
            transform: rotate(-1.5deg);
        }

        .section-padding {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        /* 1. Header & Navigation */
        header {
            background: #ffffff;
            border-bottom: var(--border-style);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .ai-page-logo {
            height: 45px;
            width: auto;
            border: 2px solid #1a1a1a;
            border-radius: 8px;
            background: #fff;
        }
        .brand-title {
            font-size: 1.4rem;
            font-weight: 900;
        }
        .nav-menu {
            display: flex;
            gap: 20px;
            align-items: center;
        }
        .nav-link {
            font-weight: bold;
            font-size: 0.95rem;
            padding: 5px 10px;
            border-radius: 6px;
        }
        .nav-link:hover {
            background-color: var(--primary);
            border: 2px solid #1a1a1a;
            padding: 3px 8px;
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            border: 2px solid #1a1a1a;
            padding: 8px;
            border-radius: 8px;
            background: var(--primary);
        }
        .menu-toggle span {
            display: block;
            width: 24px;
            height: 3px;
            background-color: #1a1a1a;
        }

        /* 2. Hero (No Image Policy) */
        .hero {
            background: radial-gradient(circle at 10% 20%, rgb(255, 252, 237) 0%, rgb(240, 253, 255) 90%);
            border-bottom: var(--border-style);
            position: relative;
            padding: 100px 0;
            overflow: hidden;
        }
        .hero::before {
            content: '★';
            position: absolute;
            font-size: 4rem;
            color: var(--secondary);
            top: 10%;
            left: 5%;
            transform: rotate(-15deg);
            opacity: 0.4;
        }
        .hero::after {
            content: '⚡';
            position: absolute;
            font-size: 5rem;
            color: var(--primary);
            bottom: 10%;
            right: 8%;
            transform: rotate(20deg);
            opacity: 0.4;
        }
        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .hero-title-wrap {
            margin-bottom: 25px;
        }
        .hero-title-wrap h1 {
            font-size: 3.5rem;
            color: var(--text-color);
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 40px;
            font-weight: bold;
            color: var(--text-muted);
        }
        .hero-btn-group {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* 3. Data Indicators */
        .indicators {
            border-bottom: var(--border-style);
            background: #ffffff;
            padding: 50px 0;
        }
        .indicator-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
        }
        .indicator-card {
            text-align: center;
            border: var(--border-style);
            border-radius: 12px;
            padding: 20px;
            background: var(--bg-color);
            box-shadow: 3px 3px 0px #1a1a1a;
        }
        .ind-num {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--secondary);
        }
        .ind-label {
            font-weight: bold;
            font-size: 1rem;
            margin-top: 5px;
        }

        /* 4. AIGC Services */
        .services {
            background-color: #faf7f2;
            border-bottom: var(--border-style);
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        /* 5. One-stop production & Solutions */
        .production {
            background-color: #ffffff;
            border-bottom: var(--border-style);
        }

        /* 6. Comparison Table Section */
        .comparison {
            background-color: #f7fcfe;
            border-bottom: var(--border-style);
        }
        .rating-badge {
            background: var(--secondary);
            color: #fff;
            padding: 10px 20px;
            font-size: 1.2rem;
            font-weight: bold;
            border-radius: 30px;
            display: inline-block;
            border: 2px solid #1a1a1a;
            box-shadow: 2px 2px 0px #1a1a1a;
            margin-bottom: 30px;
        }
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: var(--border-style);
            border-radius: 12px;
            box-shadow: var(--shadow);
            background: #ffffff;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }
        th, td {
            padding: 18px;
            border-bottom: 2px solid #1a1a1a;
            border-right: 2px solid #1a1a1a;
        }
        th:last-child, td:last-child {
            border-right: none;
        }
        th {
            background-color: var(--primary);
            font-weight: 900;
            font-size: 1.1rem;
        }
        tr:last-child td {
            border-bottom: none;
        }
        .highlight-col {
            background-color: #fffdec;
            font-weight: bold;
        }

        /* 7. Token Pricing & Network */
        .token-pricing {
            background-color: #fffcf5;
            border-bottom: var(--border-style);
        }
        .token-list {
            list-style: none;
        }
        .token-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 15px;
            border-bottom: 2px dashed #1a1a1a;
        }
        .token-item:last-child {
            border-bottom: none;
        }

        /* 8. Vocational Training */
        .training {
            background-color: #ffffff;
            border-bottom: var(--border-style);
        }

        /* 9. Case Center & Media Display */
        .cases {
            background-color: #fafafa;
            border-bottom: var(--border-style);
        }
        .case-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            border: 2px solid #1a1a1a;
            border-radius: 8px;
            margin-bottom: 15px;
        }

        /* 10. Customer Reviews */
        .reviews {
            background-color: #fff9f9;
            border-bottom: var(--border-style);
        }
        .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 15px;
            font-weight: bold;
        }
        .review-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50px;
            border: 2px solid #1a1a1a;
            background: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        /* 11. FAQ Accordion */
        .faq {
            background-color: #ffffff;
            border-bottom: var(--border-style);
        }
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .faq-item {
            border: var(--border-style);
            border-radius: 12px;
            background: #fff;
            overflow: hidden;
            box-shadow: 3px 3px 0px #1a1a1a;
        }
        .faq-question {
            padding: 20px;
            font-weight: bold;
            font-size: 1.1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #fff;
            user-select: none;
        }
        .faq-question:hover {
            background: #fffdf2;
        }
        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            border-top: 0px solid #1a1a1a;
            color: var(--text-muted);
            background: #fbfbfa;
        }
        .faq-item.active .faq-answer {
            padding: 20px;
            max-height: 500px;
            border-top: 2px solid #1a1a1a;
        }
        .faq-icon::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: 900;
        }
        .faq-item.active .faq-icon::after {
            content: '−';
        }

        /* 12. Smart Matching & Form */
        .matching {
            background-color: #f6fdf6;
            border-bottom: var(--border-style);
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .contact-form {
            background: #ffffff;
            border: var(--border-style);
            border-radius: 16px;
            padding: 40px;
            box-shadow: var(--shadow);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            font-weight: bold;
            margin-bottom: 8px;
        }
        .form-control {
            width: 100%;
            padding: 12px;
            border: 2px solid #1a1a1a;
            border-radius: 8px;
            font-size: 1rem;
            background-color: #fff;
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 2px 2px 0px #1a1a1a;
        }

        /* 13. Articles & News */
        .articles {
            background-color: #ffffff;
            border-bottom: var(--border-style);
        }
        .article-link-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .article-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 15px 20px;
            border: 2px solid #1a1a1a;
            border-radius: 8px;
            background: #fff;
            transition: all 0.2s;
        }
        .article-item:hover {
            transform: translateX(5px);
            background: var(--primary);
        }

        /* 14. Partner Program */
        .partner {
            background-color: #fffbf0;
            border-bottom: var(--border-style);
        }

        /* 15. Footer */
        footer {
            background-color: #1a1a1a;
            color: #ffffff;
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
            border-bottom: 1px solid #333;
            padding-bottom: 40px;
        }
        .footer-logo {
            max-width: 150px;
            border: 2px solid #fff;
            border-radius: 8px;
            background: #fff;
            margin-bottom: 15px;
        }
        .footer-title {
            color: var(--primary);
            font-size: 1.2rem;
            margin-bottom: 20px;
            font-weight: bold;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #cccccc;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .qr-card {
            background: #fff;
            padding: 10px;
            border-radius: 8px;
            display: inline-block;
            margin-bottom: 10px;
        }
        .qr-card img {
            width: 120px;
            height: 120px;
            display: block;
        }
        .friendship-links {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #333;
        }
        .friendship-links a {
            color: #aaa;
            margin-right: 15px;
            display: inline-block;
            font-size: 0.9rem;
        }
        .friendship-links a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 0.9rem;
            color: #888;
        }

        /* Float Customer Service */
        .float-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background: var(--primary);
            border: var(--border-style);
            box-shadow: var(--shadow);
            border-radius: 50%;
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
        }
        .float-kefu:hover {
            transform: scale(1.1);
        }
        .float-kefu svg {
            width: 30px;
            height: 30px;
        }
        .kefu-popover {
            position: absolute;
            bottom: 70px;
            right: 0;
            background: #fff;
            border: var(--border-style);
            border-radius: 12px;
            padding: 15px;
            box-shadow: var(--shadow);
            display: none;
            width: 200px;
            text-align: center;
        }
        .kefu-popover.active {
            display: block;
        }
        .kefu-popover img {
            width: 100%;
            height: auto;
            border-radius: 8px;
            border: 1px solid #1a1a1a;
            margin-bottom: 5px;
        }
        .kefu-popover p {
            font-size: 0.85rem;
            font-weight: bold;
            color: #1a1a1a;
        }

        /* Back to top button */
        .back-to-top {
            position: fixed;
            bottom: 105px;
            right: 30px;
            z-index: 998;
            background: var(--accent);
            border: var(--border-style);
            box-shadow: var(--shadow);
            border-radius: 50%;
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
        }
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }

        /* Responsive Breakpoints */
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            .hero-title-wrap h1 { font-size: 2.8rem; }
            .form-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #fff;
                border-bottom: var(--border-style);
                padding: 20px;
                gap: 15px;
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero { padding: 60px 0; }
            .hero-title-wrap h1 { font-size: 2.2rem; }
            .section-padding { padding: 50px 0; }
        }