:root {
            --primary: #0052ff;
            --secondary: #ff5a00;
            --accent: #ffd600;
            --dark: #121212;
            --light-bg: #f8f9fa;
            --white: #ffffff;
            --border-width: 3px;
            --box-shadow: 6px 6px 0px #121212;
            --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            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(--light-bg);
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

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

        /* 明艳撞色风格公共类 */
        .btn-neo {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--dark);
            background-color: var(--accent);
            border: var(--border-width) solid var(--dark);
            box-shadow: 4px 4px 0px var(--dark);
            cursor: pointer;
            transition: var(--transition);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .btn-neo:hover {
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0px var(--dark);
            background-color: var(--white);
        }

        .btn-neo:active {
            transform: translate(2px, 2px);
            box-shadow: 2px 2px 0px var(--dark);
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--white);
        }
        .btn-primary:hover {
            background-color: var(--accent);
            color: var(--dark);
        }

        .card-neo {
            background: var(--white);
            border: var(--border-width) solid var(--dark);
            box-shadow: var(--box-shadow);
            padding: 30px;
            transition: var(--transition);
            position: relative;
        }

        .card-neo:hover {
            transform: translate(-4px, -4px);
            box-shadow: 10px 10px 0px var(--dark);
        }

        .badge-neo {
            display: inline-block;
            padding: 4px 12px;
            font-weight: 700;
            font-size: 0.85rem;
            background-color: var(--secondary);
            color: var(--white);
            border: 2px solid var(--dark);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2.5rem;
            font-weight: 900;
            text-align: center;
            margin-bottom: 50px;
            text-transform: uppercase;
            position: relative;
            display: inline-block;
            left: 50%;
            transform: translateX(-50%);
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 10px;
            right: -10px;
            height: 12px;
            background: var(--accent);
            z-index: -1;
            border: 2px solid var(--dark);
        }

        section {
            padding: 80px 0;
            border-bottom: var(--border-width) solid var(--dark);
        }

        /* Header / Navigation */
        header {
            background: var(--white);
            border-bottom: var(--border-width) solid var(--dark);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .logo-area img {
            height: 45px;
            display: block;
        }

        .nav-menu {
            display: flex;
            align-items: center;
        }

        .nav-link {
            font-weight: 700;
            font-size: 0.95rem;
            padding: 8px 12px;
            border: 2px solid transparent;
        }

        .nav-link:hover {
            background-color: var(--accent);
            border-color: var(--dark);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: var(--border-width) solid var(--dark);
            padding: 5px 10px;
            font-weight: 900;
            cursor: pointer;
        }

        /* Hero Section (No Images) */
        .hero {
            background: linear-gradient(135deg, #0052ff 0%, #ff5a00 100%);
            color: var(--white);
            text-align: center;
            padding: 120px 0 100px;
            position: relative;
            overflow: hidden;
            border-bottom: var(--border-width) solid var(--dark);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(var(--accent) 15%, transparent 15%);
            background-size: 30px 30px;
            opacity: 0.15;
            pointer-events: none;
        }

        .hero-tag {
            background: var(--accent);
            color: var(--dark);
            padding: 8px 20px;
            font-weight: 900;
            border: var(--border-width) solid var(--dark);
            display: inline-block;
            margin-bottom: 25px;
            box-shadow: 4px 4px 0px var(--dark);
            transform: rotate(-1deg);
        }

        .hero h1 {
            font-size: 3.5rem;
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 20px;
            text-shadow: 3px 3px 0px var(--dark);
            color: var(--white);
        }

        .hero-desc {
            font-size: 1.25rem;
            max-width: 800px;
            margin: 0 auto 40px;
            font-weight: 500;
            background: rgba(18, 18, 18, 0.85);
            padding: 15px 25px;
            border: 2px solid var(--white);
            color: var(--white);
        }

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

        .hero-buttons .btn-neo {
            font-size: 1.1rem;
        }

        /* Stats Grid */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: -50px;
            position: relative;
            z-index: 10;
        }

        .stat-card {
            background: var(--accent);
            text-align: center;
            border: var(--border-width) solid var(--dark);
            box-shadow: var(--box-shadow);
            padding: 20px;
        }

        .stat-num {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--dark);
            display: block;
        }

        .stat-label {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--dark);
        }

        /* Platform Introduction */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .intro-text h3 {
            font-size: 2rem;
            font-weight: 900;
            margin-bottom: 20px;
        }

        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-top: 25px;
        }

        .intro-feat-item {
            padding: 15px;
            background: var(--light-bg);
            border: 2px solid var(--dark);
            font-weight: 700;
        }

        /* Core Services & Capabilities */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card h3 {
            font-size: 1.5rem;
            font-weight: 900;
            margin: 15px 0 10px;
        }

        .service-list {
            list-style: none;
            margin-top: 15px;
        }

        .service-list li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .service-list li::before {
            content: '➔';
            position: absolute;
            left: 0;
            color: var(--secondary);
        }

        /* Full Platform Models Grid */
        .models-marquee {
            background: var(--dark);
            color: var(--white);
            padding: 20px 0;
            overflow: hidden;
            white-space: nowrap;
            border-top: var(--border-width) solid var(--dark);
            border-bottom: var(--border-width) solid var(--dark);
        }

        .models-track {
            display: inline-block;
            animation: marquee 25s linear infinite;
        }

        .model-tag {
            display: inline-block;
            background: var(--primary);
            color: var(--white);
            padding: 6px 15px;
            margin: 0 10px;
            font-weight: 700;
            border: 2px solid var(--white);
        }

        @keyframes marquee {
            0% { transform: translate3d(0, 0, 0); }
            100% { transform: translate3d(-50%, 0, 0); }
        }

        /* Solutions & Service Network */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .solution-card {
            border: var(--border-width) solid var(--dark);
            padding: 20px;
            background: var(--white);
        }

        .solution-card h4 {
            font-size: 1.2rem;
            font-weight: 900;
            margin-bottom: 10px;
            border-bottom: 2px solid var(--dark);
            padding-bottom: 5px;
        }

        /* Timeline Flow & Tech Standards */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px 0;
        }

        .timeline::after {
            content: '';
            position: absolute;
            width: 6px;
            background-color: var(--dark);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -3px;
        }

        .timeline-container {
            padding: 10px 40px;
            position: relative;
            background-color: inherit;
            width: 50%;
        }

        .timeline-container::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            right: -10px;
            background-color: var(--accent);
            border: 4px solid var(--dark);
            top: 15px;
            border-radius: 50%;
            z-index: 1;
        }

        .left-timeline {
            left: 0;
        }

        .right-timeline {
            left: 50%;
        }

        .right-timeline::after {
            left: -10px;
        }

        .timeline-content {
            padding: 20px;
            background-color: var(--white);
            position: relative;
            border: var(--border-width) solid var(--dark);
            box-shadow: 4px 4px 0px var(--dark);
        }

        /* Case & Media Showcase */
        .case-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 30px;
        }

        .media-showcase {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .media-box {
            border: var(--border-width) solid var(--dark);
            background: var(--white);
            padding: 15px;
            box-shadow: var(--box-shadow);
        }

        .media-box img {
            width: 100%;
            height: auto;
            display: block;
            border: 2px solid var(--dark);
        }

        .media-title {
            font-weight: 800;
            margin-top: 10px;
            font-size: 1.1rem;
            display: block;
        }

        /* Comparison Section */
        .comparison-table-wrapper {
            overflow-x: auto;
            border: var(--border-width) solid var(--dark);
            box-shadow: var(--box-shadow);
            background: var(--white);
        }

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

        .comparison-table th, .comparison-table td {
            padding: 15px 20px;
            border: 1px solid #ddd;
            font-weight: 600;
        }

        .comparison-table th {
            background-color: var(--dark);
            color: var(--white);
            font-weight: 900;
        }

        .comparison-table tr:nth-child(even) {
            background-color: var(--light-bg);
        }

        .comparison-table td.highlight-cell {
            background-color: rgba(0, 82, 255, 0.1);
            color: var(--primary);
            font-weight: 800;
        }

        .rating-box {
            background: var(--accent);
            border: var(--border-width) solid var(--dark);
            padding: 30px;
            text-align: center;
            margin-top: 30px;
            box-shadow: var(--box-shadow);
        }

        .rating-score {
            font-size: 3.5rem;
            font-weight: 900;
            color: var(--dark);
        }

        /* Token的比价 & 需求匹配 */
        .token-calc-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .price-list-box {
            max-height: 400px;
            overflow-y: auto;
            border: 2px solid var(--dark);
            padding: 15px;
            background: #fff;
        }

        .price-item {
            display: flex;
            justify-content: space-between;
            padding: 10px;
            border-bottom: 1px dashed var(--dark);
            font-weight: 700;
        }

        .price-item:last-child {
            border-bottom: none;
        }

        /* Training & Certificates */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .training-card {
            background: var(--white);
            border: var(--border-width) solid var(--dark);
            padding: 25px;
            text-align: center;
            box-shadow: var(--box-shadow);
        }

        .training-card h4 {
            font-size: 1.3rem;
            font-weight: 900;
            margin: 15px 0 10px;
        }

        /* Testimonials / Reviews */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .review-card {
            background: var(--white);
            border: var(--border-width) solid var(--dark);
            padding: 25px;
            box-shadow: var(--box-shadow);
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 15px;
        }

        .user-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--accent);
            border: 2px solid var(--dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.2rem;
        }

        .user-info h5 {
            font-weight: 900;
            font-size: 1rem;
        }

        .user-info span {
            font-size: 0.8rem;
            color: #666;
            font-weight: 600;
        }

        /* FAQ Accordion */
        .faq-wrapper {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            border: var(--border-width) solid var(--dark);
            margin-bottom: 15px;
            background: var(--white);
            box-shadow: 4px 4px 0px var(--dark);
        }

        .faq-question {
            padding: 20px;
            font-weight: 900;
            font-size: 1.1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: var(--white);
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: 900;
        }

        .faq-item.active .faq-question::after {
            content: '-';
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: var(--light-bg);
            border-top: 0px solid var(--dark);
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            border-top: var(--border-width) solid var(--dark);
        }

        .faq-answer-inner {
            padding: 20px;
            font-weight: 600;
            color: #333;
        }

        /* Self-Troubleshoot & Tech Terms */
        .troubleshoot-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .term-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 15px;
        }

        .term-tag {
            background: var(--white);
            border: 2px solid var(--dark);
            padding: 6px 12px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
        }

        .term-tag:hover {
            background: var(--accent);
        }

        /* Articles / Knowledge Base */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .article-card {
            background: var(--white);
            border: var(--border-width) solid var(--dark);
            padding: 25px;
            box-shadow: var(--box-shadow);
        }

        .article-card h4 {
            font-size: 1.2rem;
            font-weight: 900;
            margin-bottom: 15px;
        }

        .article-link {
            font-weight: 800;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .article-link:hover {
            color: var(--secondary);
        }

        /* Form & Contact Section */
        .contact-grid {
            display: grid;
            grid-template-columns: 3fr 2fr;
            gap: 40px;
        }

        .form-neo {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .form-group label {
            font-weight: 900;
            font-size: 0.9rem;
        }

        .form-control {
            padding: 12px;
            border: var(--border-width) solid var(--dark);
            font-size: 1rem;
            font-weight: 700;
            background: var(--white);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 3px 3px 0px var(--dark);
        }

        .contact-info-card {
            background: var(--accent);
            border: var(--border-width) solid var(--dark);
            padding: 30px;
            box-shadow: var(--box-shadow);
        }

        .contact-info-card h4 {
            font-size: 1.5rem;
            font-weight: 900;
            margin-bottom: 20px;
        }

        .info-item {
            margin-bottom: 15px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .qr-area {
            margin-top: 25px;
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .qr-area img {
            width: 100px;
            height: 100px;
            border: 2px solid var(--dark);
        }

        /* Footer & Partners */
        footer {
            background: var(--dark);
            color: var(--white);
            padding: 60px 0 30px;
            border-top: var(--border-width) solid var(--dark);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 1.8rem;
            font-weight: 900;
            margin-bottom: 15px;
            color: var(--accent);
        }

        .footer-links h4 {
            font-size: 1.1rem;
            font-weight: 900;
            margin-bottom: 15px;
            color: var(--accent);
            border-bottom: 2px solid var(--white);
            padding-bottom: 5px;
            display: inline-block;
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #ccc;
            font-weight: 600;
        }

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

        .friend-links {
            border-top: 1px solid #444;
            padding-top: 20px;
            margin-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 0.9rem;
        }

        .friend-links a {
            color: #aaa;
            font-weight: 700;
        }

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

        .copyright-area {
            border-top: 1px solid #444;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: #999;
            font-weight: 600;
        }

        /* Floating Contact Element */
        .floating-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background: var(--accent);
            border: var(--border-width) solid var(--dark);
            padding: 15px;
            box-shadow: 4px 4px 0px var(--dark);
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .floating-kefu:hover {
            transform: translate(-3px, -3px);
            box-shadow: 7px 7px 0px var(--dark);
        }

        .floating-kefu img {
            width: 80px;
            height: 80px;
            display: block;
            margin-top: 8px;
            border: 2px solid var(--dark);
        }

        .floating-kefu span {
            font-weight: 900;
            font-size: 0.85rem;
            display: block;
        }

        /* Responsive Design */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                margin-top: -30px;
            }
            .services-grid, .training-grid, .reviews-grid, .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--white);
                border-bottom: var(--border-width) solid var(--dark);
                padding: 20px;
                box-shadow: var(--box-shadow);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 2rem;
            }
            .intro-grid, .token-calc-grid, .troubleshoot-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .services-grid, .training-grid, .reviews-grid, .articles-grid, .solutions-grid {
                grid-template-columns: 1fr;
            }
            .timeline::after {
                left: 31px;
            }
            .timeline-container {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            .timeline-container::after {
                left: 21px;
            }
            .right-timeline {
                left: 0%;
            }
        }