:root {
            --primary: #5d0dfd;
            --secondary: #ff2a85;
            --accent: #00f0ff;
            --bg-base: #f8f9fc;
            --bg-card: #ffffff;
            --text-main: #1e2229;
            --text-muted: #626e82;
            --laser-gradient: linear-gradient(135deg, #ff2a85 0%, #5d0dfd 50%, #00f0ff 100%);
            --laser-shadow: 0 10px 30px rgba(93, 13, 253, 0.08);
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

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

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

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

        a:hover {
            color: var(--secondary);
        }

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

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

        .section-title {
            font-size: 2.2rem;
            text-align: center;
            margin-bottom: 50px;
            font-weight: 800;
            background: var(--laser-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            position: relative;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--laser-gradient);
            margin: 15px auto 0;
            border-radius: 2px;
        }

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(15px);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.5);
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

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

        .ai-page-logo {
            max-height: 45px;
            width: auto;
        }

        .logo-text {
            font-size: 1.25rem;
            font-weight: 800;
            background: var(--laser-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        nav {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
        }

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

        .btn-nav {
            background: var(--laser-gradient);
            color: #ffffff;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            box-shadow: 0 4px 15px rgba(93, 13, 253, 0.2);
        }

        .btn-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 42, 133, 0.3);
            color: #ffffff;
        }

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

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* Hero首屏 (纯代码，无图片) */
        .hero {
            padding: 180px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(0, 240, 255, 0.1), transparent 40%),
                        radial-gradient(circle at 10% 80%, rgba(255, 42, 133, 0.08), transparent 40%),
                        #ffffff;
            position: relative;
            text-align: center;
            border-bottom: 1px solid rgba(0, 0, 0, 0.03);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--laser-gradient);
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(93, 13, 253, 0.06);
            color: var(--primary);
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 20px;
            border: 1px solid rgba(93, 13, 253, 0.15);
            letter-spacing: 1px;
        }

        .hero h1 {
            font-size: 3rem;
            line-height: 1.25;
            font-weight: 900;
            margin-bottom: 25px;
            letter-spacing: -0.5px;
        }

        .hero h1 span {
            background: var(--laser-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 750px;
            margin: 0 auto 40px;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }

        .btn-primary {
            background: var(--laser-gradient);
            color: #ffffff;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 700;
            box-shadow: 0 8px 25px rgba(93, 13, 253, 0.25);
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(255, 42, 133, 0.35);
            color: #ffffff;
        }

        .btn-secondary {
            background: #ffffff;
            color: var(--text-main);
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 700;
            border: 2px solid #e1e4ed;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-3px);
        }

        /* 平台特色标签云 */
        .model-tags-container {
            max-width: 900px;
            margin: 0 auto;
            padding: 20px;
            background: rgba(255, 255, 255, 0.6);
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.8);
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
            backdrop-filter: blur(10px);
        }

        .model-tags-title {
            font-size: 0.85rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 15px;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .tag-item {
            font-size: 0.75rem;
            padding: 5px 12px;
            background: #ffffff;
            border: 1px solid #eaeaea;
            border-radius: 20px;
            color: var(--text-muted);
            font-weight: 500;
            transition: var(--transition);
        }

        .tag-item:hover {
            background: var(--laser-gradient);
            color: #ffffff;
            border-color: transparent;
            transform: scale(1.05);
        }

        /* 主体通用Section */
        section {
            padding: 100px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.02);
        }

        /* 数据指标卡片 */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: var(--bg-card);
            padding: 30px;
            border-radius: 20px;
            text-align: center;
            border: 1px solid rgba(0,0,0,0.03);
            box-shadow: var(--laser-shadow);
            transition: var(--transition);
        }

        .metric-card:hover {
            transform: translateY(-5px);
            border-color: rgba(93, 13, 253, 0.2);
        }

        .metric-num {
            font-size: 2.5rem;
            font-weight: 900;
            background: var(--laser-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 10px;
        }

        .metric-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* 关于我们 & 平台介绍 */
        .intro-block {
            background: #ffffff;
            border-radius: 24px;
            padding: 50px;
            box-shadow: var(--laser-shadow);
            border: 1px solid rgba(255, 255, 255, 0.8);
        }

        .intro-text p {
            font-size: 1.1rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            line-height: 1.8;
        }

        .feature-bullets {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .bullet-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }

        .bullet-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(93, 13, 253, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            flex-shrink: 0;
        }

        .bullet-title {
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-main);
        }

        .bullet-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        /* 服务能力卡片 (全平台AIGC服务) */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: #ffffff;
            border-radius: 20px;
            padding: 40px 30px;
            border: 1px solid #f0f2f7;
            box-shadow: 0 5px 20px rgba(0,0,0,0.01);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--laser-shadow);
            border-color: rgba(93, 13, 253, 0.15);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon-box {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(255, 42, 133, 0.1) 0%, rgba(0, 240, 255, 0.1) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
        }

        .service-icon-box svg {
            width: 30px;
            height: 30px;
            fill: var(--primary);
        }

        .service-card h3 {
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 15px;
            color: var(--text-main);
        }

        .service-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

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

        .service-list li {
            font-size: 0.88rem;
            color: var(--text-muted);
            padding: 6px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .service-list li::before {
            content: "✓";
            color: var(--accent);
            font-weight: bold;
        }

        /* 流程步骤 */
        .step-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-node {
            background: #ffffff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid #f0f2f7;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--laser-gradient);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            margin-bottom: 20px;
            box-shadow: 0 4px 10px rgba(93, 13, 253, 0.3);
        }

        .step-node h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-node p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        /* 对比评测表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 16px;
            box-shadow: var(--laser-shadow);
            border: 1px solid #eaeaea;
            background: #ffffff;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

        th, td {
            padding: 18px 24px;
            border-bottom: 1px solid #f0f2f7;
        }

        th {
            background: #fcfdfe;
            font-weight: 700;
            color: var(--text-main);
        }

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

        .highlight-col {
            background: rgba(93, 13, 253, 0.02);
            font-weight: 600;
        }

        .rating-star {
            color: #ffb800;
            font-size: 1.1rem;
        }

        /* 案例展示区 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background: #ffffff;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--laser-shadow);
            border: 1px solid #f0f2f7;
            display: flex;
            flex-direction: column;
        }

        .case-image-wrap {
            position: relative;
            background: #eaeaea;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

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

        .case-body {
            padding: 30px;
        }

        .case-tag {
            display: inline-block;
            padding: 4px 10px;
            background: rgba(0, 240, 255, 0.1);
            color: #0093a3;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .case-body h3 {
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .case-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
        }

        /* 客户评论卡片 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .comment-card {
            background: #ffffff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid #f0f2f7;
            box-shadow: 0 4px 15px rgba(0,0,0,0.01);
            position: relative;
        }

        .comment-text {
            font-style: italic;
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

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

        .user-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--laser-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-weight: 700;
            font-size: 0.9rem;
        }

        .user-info h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
        }

        .user-info p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* FAQ折叠面板 */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background: #ffffff;
            border-radius: 12px;
            border: 1px solid #eaeaea;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            font-weight: 700;
            color: var(--text-main);
            transition: var(--transition);
        }

        .faq-header:hover {
            background: rgba(93, 13, 253, 0.01);
        }

        .faq-icon {
            font-size: 1.2rem;
            transition: var(--transition);
            color: var(--primary);
        }

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

        .faq-content-inner {
            padding: 20px 24px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            border-top: 1px solid #f0f2f7;
        }

        .faq-item.active .faq-content {
            max-height: 300px; /* 足够容纳展开内容 */
        }

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

        /* 需求表单与联系 */
        .contact-section-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
        }

        .form-wrap {
            background: #ffffff;
            padding: 40px;
            border-radius: 24px;
            box-shadow: var(--laser-shadow);
            border: 1px solid rgba(255, 255, 255, 0.8);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #dcdfe6;
            border-radius: 8px;
            font-size: 0.95rem;
            transition: var(--transition);
            background-color: #fafbfc;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: #ffffff;
            box-shadow: 0 0 0 3px rgba(93, 13, 253, 0.1);
        }

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

        .contact-info-wrap {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .info-card {
            background: #ffffff;
            padding: 30px;
            border-radius: 20px;
            border: 1px solid #f0f2f7;
            margin-bottom: 30px;
        }

        .info-item {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
        }

        .info-item:last-child {
            margin-bottom: 0;
        }

        .info-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 42, 133, 0.1);
            color: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .qrcode-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .qrcode-box {
            background: #ffffff;
            padding: 20px;
            border-radius: 16px;
            border: 1px solid #f0f2f7;
            text-align: center;
        }

        .qrcode-box img {
            width: 100%;
            max-width: 130px;
            margin: 0 auto 10px;
            border-radius: 8px;
        }

        .qrcode-box p {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-main);
        }

        /* 术语百科与资讯库 */
        .info-columns {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .wiki-list, .article-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .wiki-card {
            background: #ffffff;
            padding: 20px;
            border-radius: 12px;
            border-left: 4px solid var(--accent);
            box-shadow: 0 2px 10px rgba(0,0,0,0.01);
        }

        .wiki-card h5 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .wiki-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        .article-card {
            background: #ffffff;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid #f0f2f7;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }

        .article-card:hover {
            border-color: var(--primary);
            transform: translateX(5px);
        }

        .article-title {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-main);
        }

        .article-date {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 友情链接与页脚 */
        footer {
            background: #10141d;
            color: #8a96a3;
            padding: 80px 0 30px;
            font-size: 0.9rem;
            border-top: 1px solid #1a202c;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.5fr;
            gap: 50px;
            margin-bottom: 50px;
        }

        .footer-brand h4 {
            color: #ffffff;
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .footer-brand p {
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .footer-links h5, .footer-contact h5 {
            color: #ffffff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
        }

        .footer-links ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
        }

        .footer-links a {
            color: #8a96a3;
        }

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

        .friend-links-wrap {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #1a202c;
        }

        .friend-links-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friend-links a {
            color: #627282;
            font-size: 0.85rem;
        }

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

        .footer-bottom {
            padding-top: 30px;
            border-top: 1px solid #1a202c;
            text-align: center;
            font-size: 0.8rem;
            color: #556270;
        }

        /* 浮动客服 */
        .floating-kefu {
            position: fixed;
            right: 25px;
            bottom: 25px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .kefu-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--laser-gradient);
            box-shadow: 0 4px 15px rgba(93,13,253,0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
        }

        .kefu-btn:hover {
            transform: scale(1.1);
        }

        .kefu-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #ffffff;
            border-radius: 12px;
            padding: 15px;
            box-shadow: var(--laser-shadow);
            border: 1px solid #eaeaea;
            width: 220px;
            display: none;
            text-align: center;
        }

        .kefu-popover img {
            width: 100%;
            border-radius: 6px;
            margin-bottom: 8px;
        }

        .kefu-popover p {
            font-size: 0.8rem;
            color: var(--text-main);
            margin: 0;
        }

        .kefu-btn:hover .kefu-popover {
            display: block;
        }

        /* 移动端响应式兼容 */
        @media (max-width: 992px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-timeline {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
            .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .contact-section-grid {
                grid-template-columns: 1fr;
            }
            .info-columns {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            nav {
                position: absolute;
                top: 80px;
                left: 0;
                width: 100%;
                background: #ffffff;
                flex-direction: column;
                padding: 30px 20px;
                border-top: 1px solid #f0f2f7;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                display: none;
            }
            nav.open {
                display: flex;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .step-timeline {
                grid-template-columns: 1fr;
            }
            .comments-grid {
                grid-template-columns: 1fr;
            }
            .feature-bullets {
                grid-template-columns: 1fr;
            }
        }