:root {
            --primary: #0052ff;
            --secondary: #00e676;
            --dark: #0f172a;
            --light: #f8fafc;
            --text-main: #334155;
            --text-bold: #0f172a;
            --border: #e2e8f0;
            --glow: 0 0 20px rgba(0, 82, 255, 0.15);
        }

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

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

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

        /* 极致鲜亮风样式 */
        .btn-gradient {
            background: linear-gradient(135deg, var(--primary) 0%, #00d2ff 100%);
            color: #fff;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            display: inline-block;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 82, 255, 0.3);
            border: none;
            cursor: pointer;
        }

        .btn-gradient:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 82, 255, 0.5);
        }

        .btn-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            padding: 10px 26px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            display: inline-block;
            transition: all 0.3s ease;
        }

        .btn-outline:hover {
            background-color: var(--primary);
            color: #fff;
        }

        /* Header & Navigation */
        header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border);
        }

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

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

        .logo-area span {
            font-size: 20px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        nav a {
            text-decoration: none;
            color: var(--text-main);
            font-weight: 500;
            transition: color 0.3s;
            font-size: 14px;
        }

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

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

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 3px;
            transition: 0.3s;
        }

        /* Hero section (首屏无图片) */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(0, 230, 118, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(0, 82, 255, 0.08) 0%, transparent 50%),
                        var(--light);
            text-align: center;
        }

        .hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-bold);
            margin-bottom: 20px;
            letter-spacing: -1px;
        }

        .hero h1 span {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 18px;
            max-width: 800px;
            margin: 0 auto 40px;
            color: var(--text-main);
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 60px;
            flex-wrap: wrap;
        }

        /* Statistics Cards */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stats-card {
            background: #fff;
            padding: 30px 20px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
            border: 1px solid var(--border);
            transition: transform 0.3s;
        }

        .stats-card:hover {
            transform: translateY(-5px);
        }

        .stats-card h3 {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 5px;
            font-weight: 700;
        }

        .stats-card p {
            font-size: 14px;
            color: var(--text-main);
            margin: 0;
        }

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

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

        .section-header h2 {
            font-size: 32px;
            color: var(--text-bold);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-header p {
            color: var(--text-main);
            max-width: 600px;
            margin: 0 auto;
        }

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

        .service-card {
            background: #fff;
            padding: 40px 30px;
            border-radius: 20px;
            border: 1px solid var(--border);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

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

        .service-card .icon-box {
            width: 60px;
            height: 60px;
            background: rgba(0, 82, 255, 0.1);
            color: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
            font-weight: bold;
        }

        .service-card h3 {
            font-size: 20px;
            color: var(--text-bold);
            margin-bottom: 15px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-main);
        }

        /* Production (包含方版素材图) */
        .production-box {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .production-img-wrapper img {
            border-radius: 24px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            width: 100%;
        }

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

        .features-list li {
            position: relative;
            padding-left: 30px;
            margin-bottom: 20px;
            font-size: 16px;
        }

        .features-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--secondary);
            font-weight: bold;
            font-size: 18px;
        }

        /* Solutions (包含横版素材图) */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
        }

        .solution-card {
            background: #fff;
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .solution-card img {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }

        .solution-info {
            padding: 30px;
        }

        .solution-info h3 {
            margin-bottom: 10px;
            color: var(--text-bold);
        }

        /* Network & Workflow */
        .network-map {
            background: #fff;
            padding: 40px;
            border-radius: 20px;
            text-align: center;
            border: 1px solid var(--border);
        }

        .workflow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
        }

        .step-card {
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 50px;
            height: 50px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 20px;
        }

        /* Standards & Cases (包含三张宣传图) */
        .standards-table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0,0,0,0.03);
        }

        .standards-table th, .standards-table td {
            padding: 18px;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }

        .standards-table th {
            background: var(--primary);
            color: #fff;
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background: #fff;
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .case-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .case-body {
            padding: 20px;
        }

        /* Evaluation Table */
        .eval-badge {
            background: linear-gradient(135deg, #ff9800 0%, #ff5722 100%);
            color: #fff;
            padding: 10px 20px;
            border-radius: 8px;
            display: inline-block;
            font-weight: 700;
            margin-bottom: 20px;
        }

        /* Token Pricing */
        .token-pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .pricing-card {
            background: #fff;
            padding: 40px 30px;
            border-radius: 20px;
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
        }

        .pricing-card.popular {
            border-color: var(--primary);
            box-shadow: var(--glow);
        }

        .pricing-card h3 {
            font-size: 22px;
            margin-bottom: 15px;
        }

        .price {
            font-size: 36px;
            color: var(--primary);
            font-weight: 800;
            margin-bottom: 20px;
        }

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

        .faq-item {
            background: #fff;
            margin-bottom: 15px;
            border-radius: 12px;
            border: 1px solid var(--border);
            overflow: hidden;
        }

        .faq-quest {
            padding: 20px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #fff;
            transition: background 0.3s;
        }

        .faq-quest:hover {
            background: #f8fafc;
        }

        .faq-quest::after {
            content: "+";
            font-size: 20px;
            color: var(--primary);
            transition: transform 0.3s;
        }

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

        .faq-ans {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: #fff;
        }

        .faq-ans-content {
            padding: 0 20px 20px;
            color: var(--text-main);
            font-size: 14px;
        }

        /* Reviews Grid */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .review-card {
            background: #fff;
            padding: 30px;
            border-radius: 20px;
            border: 1px solid var(--border);
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-top: 20px;
        }

        .review-avatar {
            width: 45px;
            height: 45px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        /* Form Area */
        .form-section {
            background: #fff;
            padding: 60px 40px;
            border-radius: 24px;
            border: 1px solid var(--border);
            max-width: 700px;
            margin: 0 auto;
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }

        .form-control {
            width: 100%;
            padding: 12px 18px;
            border-radius: 8px;
            border: 1px solid var(--border);
            outline: none;
            transition: border-color 0.3s;
        }

        .form-control:focus {
            border-color: var(--primary);
        }

        /* Articles & Footer */
        .articles-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .article-item {
            background: #fff;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .article-item a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
        }

        footer {
            background: var(--dark);
            color: #94a3b8;
            padding: 80px 0 30px;
            font-size: 14px;
        }

        footer a {
            color: #cbd5e1;
            text-decoration: none;
            transition: color 0.3s;
        }

        footer a:hover {
            color: #fff;
        }

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

        .footer-logo {
            margin-bottom: 20px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 20px;
        }

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

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

        .friend-links {
            border-top: 1px solid #334155;
            padding-top: 30px;
            margin-top: 30px;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friend-links a {
            font-size: 13px;
        }

        .copyright-bar {
            border-top: 1px solid #334155;
            padding-top: 20px;
            margin-top: 30px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* Floating Contact Box */
        .floating-contact {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #fff;
            border-radius: 50%;
            width: 60px;
            height: 60px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 999;
            transition: transform 0.3s;
        }

        .floating-contact:hover {
            transform: scale(1.1);
        }

        .floating-contact svg {
            width: 30px;
            height: 30px;
            fill: var(--primary);
        }

        .contact-popover {
            position: absolute;
            bottom: 75px;
            right: 0;
            background: #fff;
            border: 1px solid var(--border);
            padding: 20px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            width: 260px;
            display: none;
            text-align: center;
        }

        .contact-popover.active {
            display: block;
        }

        .contact-popover img {
            width: 150px;
            height: 150px;
            margin-bottom: 10px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .services-grid, .workflow-steps, .cases-grid, .token-pricing-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            nav {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border);
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
                gap: 15px;
            }
            .menu-toggle {
                display: flex;
            }
            .hero h1 {
                font-size: 32px;
            }
            .production-box, .solutions-grid {
                grid-template-columns: 1fr;
            }
            .services-grid, .workflow-steps, .cases-grid, .token-pricing-grid, .reviews-grid, .stats-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .articles-list {
                grid-template-columns: 1fr;
            }
        }