:root {
            --aisitex-bg: #ffffff;
            --aisitex-surface: #f7f6f3;
            --aisitex-surface-hover: #efeeea;
            --aisitex-text: #37352f;
            --aisitex-text-light: #787774;
            --aisitex-border: #e9e9e7;
            --aisitex-primary: #2383e2;
            --aisitex-primary-hover: #1b6ac9;
            --aisitex-primary-text: #ffffff;
            --aisitex-accent: #ff5c5c;
            --aisitex-radius-sm: 6px;
            --aisitex-radius-md: 12px;
            --aisitex-radius-lg: 20px;
            --aisitex-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, "Apple Color Emoji", Arial, sans-serif;
            --aisitex-max-width: 1200px;
        }

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

        body {
            font-family: var(--aisitex-font);
            background-color: var(--aisitex-bg);
            color: var(--aisitex-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        /* 顶部导航 */
        .aisitex-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--aisitex-border);
            height: 64px;
            display: flex;
            align-items: center;
        }

        .aisitex-header-container {
            max-width: var(--aisitex-max-width);
            width: 100%;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .aisitex-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.15rem;
        }

        .aisitex-brand img {
            width: 28px;
            height: 28px;
            object-fit: contain;
        }

        .aisitex-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .aisitex-nav-link {
            font-size: 0.95rem;
            color: var(--aisitex-text-light);
            transition: color 0.2s ease;
            font-weight: 500;
        }

        .aisitex-nav-link:hover,
        .aisitex-nav-link.active {
            color: var(--aisitex-text);
        }

        .aisitex-nav-link.active {
            position: relative;
        }

        .aisitex-nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--aisitex-text);
            border-radius: 2px;
        }

        .aisitex-header-cta {
            background-color: var(--aisitex-text);
            color: #ffffff;
            padding: 8px 16px;
            border-radius: var(--aisitex-radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s ease;
        }

        .aisitex-header-cta:hover {
            background-color: #000000;
        }

        /* 移动端菜单按钮 */
        .aisitex-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }

        .aisitex-menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--aisitex-text);
            margin: 5px 0;
            transition: 0.3s;
        }

        .aisitex-nav-overlay {
            display: none;
        }

        /* 首屏区域 */
        .aisitex-hero {
            max-width: var(--aisitex-max-width);
            margin: 0 auto;
            padding: 80px 24px 60px;
            text-align: center;
        }

        .aisitex-hero-tagline {
            display: inline-block;
            background-color: var(--aisitex-surface);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--aisitex-text-light);
            margin-bottom: 24px;
            border: 1px solid var(--aisitex-border);
        }

        .aisitex-hero h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.15;
            max-width: 900px;
            margin: 0 auto 24px;
            color: var(--aisitex-text);
        }

        .aisitex-hero-desc {
            font-size: clamp(1.05rem, 2vw, 1.25rem);
            color: var(--aisitex-text-light);
            max-width: 680px;
            margin: 0 auto 40px;
            line-height: 1.6;
        }

        .aisitex-hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 60px;
        }

        .aisitex-btn-primary {
            background-color: var(--aisitex-primary);
            color: var(--aisitex-primary-text);
            padding: 14px 28px;
            border-radius: var(--aisitex-radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: background 0.2s ease, transform 0.1s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .aisitex-btn-primary:hover {
            background-color: var(--aisitex-primary-hover);
        }

        .aisitex-btn-secondary {
            background-color: var(--aisitex-surface);
            color: var(--aisitex-text);
            padding: 14px 28px;
            border-radius: var(--aisitex-radius-sm);
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid var(--aisitex-border);
            transition: background 0.2s ease;
            display: inline-flex;
            align-items: center;
        }

        .aisitex-btn-secondary:hover {
            background-color: var(--aisitex-surface-hover);
        }

        /* 界面预览容器 */
        .aisitex-preview-container {
            max-width: 1040px;
            margin: 0 auto;
            background: var(--aisitex-surface);
            border-radius: var(--aisitex-radius-lg);
            border: 1px solid var(--aisitex-border);
            padding: 16px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
        }

        .aisitex-mockup-window {
            background: #ffffff;
            border-radius: var(--aisitex-radius-md);
            overflow: hidden;
            border: 1px solid var(--aisitex-border);
            text-align: left;
        }

        .aisitex-mockup-header {
            background: #fbfbfa;
            padding: 12px 16px;
            border-bottom: 1px solid var(--aisitex-border);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .aisitex-mockup-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: #dfdde2;
        }

        .aisitex-mockup-body {
            padding: 32px;
            min-height: 320px;
            display: grid;
            grid-template-columns: 240px 1fr;
            gap: 32px;
        }

        @media (max-width: 768px) {
            .aisitex-mockup-body {
                grid-template-columns: 1fr;
            }
            .aisitex-mockup-sidebar {
                display: none;
            }
        }

        .aisitex-mockup-sidebar {
            border-right: 1px solid var(--aisitex-border);
            padding-right: 20px;
        }

        .aisitex-mockup-menu-item {
            padding: 8px 12px;
            border-radius: var(--aisitex-radius-sm);
            color: var(--aisitex-text-light);
            font-size: 0.9rem;
            margin-bottom: 4px;
            font-weight: 500;
        }

        .aisitex-mockup-menu-item.active {
            background: var(--aisitex-surface);
            color: var(--aisitex-text);
        }

        .aisitex-mockup-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .aisitex-mockup-content p {
            color: var(--aisitex-text-light);
            font-size: 0.95rem;
            margin-bottom: 24px;
        }

        .aisitex-mockup-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        @media (max-width: 640px) {
            .aisitex-mockup-cards {
                grid-template-columns: 1fr;
            }
        }

        .aisitex-mockup-card {
            background: var(--aisitex-surface);
            padding: 16px;
            border-radius: var(--aisitex-radius-sm);
            border: 1px solid var(--aisitex-border);
        }

        .aisitex-mockup-card h4 {
            font-size: 0.95rem;
            margin-bottom: 8px;
            font-weight: 600;
        }

        .aisitex-mockup-card span {
            font-size: 0.85rem;
            color: var(--aisitex-text-light);
        }

        /* 主体错位章节区域 */
        .aisitex-section {
            max-width: var(--aisitex-max-width);
            margin: 0 auto;
            padding: 100px 24px;
        }

        .aisitex-section-header {
            margin-bottom: 60px;
            max-width: 700px;
        }

        .aisitex-section-title {
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            line-height: 1.25;
        }

        .aisitex-section-summary {
            font-size: 1.1rem;
            color: var(--aisitex-text-light);
            line-height: 1.6;
        }

        /* 场景导览错位布局 */
        .aisitex-scenarios-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        @media (max-width: 900px) {
            .aisitex-scenarios-grid {
                grid-template-columns: 1fr;
            }
        }

        .aisitex-scenario-card {
            background: var(--aisitex-surface);
            border: 1px solid var(--aisitex-border);
            border-radius: var(--aisitex-radius-md);
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .aisitex-scenario-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.03);
        }

        .aisitex-scenario-num {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--aisitex-text-light);
            letter-spacing: 0.05em;
            margin-bottom: 24px;
            display: block;
        }

        .aisitex-scenario-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .aisitex-scenario-card p {
            color: var(--aisitex-text-light);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* 核心能力区域 */
        .aisitex-capabilities-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        @media (max-width: 900px) {
            .aisitex-capabilities-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        .aisitex-capability-items {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .aisitex-capability-item h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .aisitex-capability-item h3::before {
            content: '';
            width: 8px;
            height: 8px;
            background-color: var(--aisitex-primary);
            border-radius: 50%;
        }

        .aisitex-capability-item p {
            color: var(--aisitex-text-light);
            font-size: 0.95rem;
            padding-left: 20px;
            line-height: 1.6;
        }

        .aisitex-capability-visual {
            background: var(--aisitex-surface);
            border: 1px solid var(--aisitex-border);
            border-radius: var(--aisitex-radius-lg);
            padding: 40px;
            min-height: 380px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        .aisitex-visual-box {
            background: #ffffff;
            border: 1px solid var(--aisitex-border);
            border-radius: var(--aisitex-radius-md);
            padding: 24px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
        }

        .aisitex-visual-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            background: #e1f5fe;
            color: #0288d1;
            padding: 4px 8px;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        /* 平台与下载引导区域 */
        .aisitex-platform-banner {
            background: var(--aisitex-surface);
            border: 1px solid var(--aisitex-border);
            border-radius: var(--aisitex-radius-lg);
            padding: 60px;
            text-align: center;
            max-width: var(--aisitex-max-width);
            margin: 0 auto 100px;
        }

        .aisitex-platform-banner h2 {
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .aisitex-platform-banner p {
            color: var(--aisitex-text-light);
            max-width: 600px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
            line-height: 1.6;
        }

        /* 页脚 */
        .aisitex-footer {
            border-top: 1px solid var(--aisitex-border);
            padding: 40px 24px;
            background: var(--aisitex-bg);
            color: var(--aisitex-text-light);
            font-size: 0.9rem;
        }

        .aisitex-footer-container {
            max-width: var(--aisitex-max-width);
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .aisitex-footer-links {
            display: flex;
            gap: 24px;
        }

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

        /* 响应式适配 */
        @media (max-width: 768px) {
            .aisitex-nav {
                display: none;
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                background: #ffffff;
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid var(--aisitex-border);
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                gap: 16px;
                align-items: flex-start;
            }

            .aisitex-nav.active {
                display: flex;
            }

            .aisitex-menu-toggle {
                display: block;
            }

            .aisitex-header-cta {
                display: none;
            }

            .aisitex-section {
                padding: 60px 20px;
            }

            .aisitex-platform-banner {
                padding: 40px 20px;
                margin: 0 20px 60px;
            }
        }

.aisitex-header {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, "Apple Color Emoji", Arial, sans-serif;
    line-height: 1.6;
    color: #37352f;
}

.aisitex-header, .aisitex-header *{
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

.aisitex-header a{
            color: inherit;
            text-decoration: none;
        }

.aisitex-header{
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid #e9e9e7;
            height: 64px;
            display: flex;
            align-items: center;
        }

.aisitex-header .aisitex-header-container{
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

.aisitex-header .aisitex-brand{
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.15rem;
        }

.aisitex-header .aisitex-brand img{
            width: 28px;
            height: 28px;
            object-fit: contain;
        }

.aisitex-header .aisitex-nav{
            display: flex;
            align-items: center;
            gap: 32px;
        }

.aisitex-header .aisitex-nav-link{
            font-size: 0.95rem;
            color: #787774;
            transition: color 0.2s ease;
            font-weight: 500;
        }

.aisitex-header .aisitex-nav-link:hover, .aisitex-header .aisitex-nav-link.active{
            color: #37352f;
        }

.aisitex-header .aisitex-nav-link.active{
            position: relative;
        }

.aisitex-header .aisitex-nav-link.active::after{
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #37352f;
            border-radius: 2px;
        }

.aisitex-header .aisitex-header-cta{
            background-color: #37352f;
            color: #ffffff;
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s ease;
        }

.aisitex-header .aisitex-header-cta:hover{
            background-color: #000000;
        }

.aisitex-header .aisitex-menu-toggle{
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }

.aisitex-header .aisitex-menu-toggle span{
            display: block;
            width: 24px;
            height: 2px;
            background-color: #37352f;
            margin: 5px 0;
            transition: 0.3s;
        }

.aisitex-header .aisitex-mockup-menu-item.active{
            background: #f7f6f3;
            color: #37352f;
        }

@media (max-width: 768px){.aisitex-header .aisitex-nav{
                display: none;
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                background: #ffffff;
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid #e9e9e7;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                gap: 16px;
                align-items: flex-start;
            }

.aisitex-header .aisitex-nav.active{
                display: flex;
            }

.aisitex-header .aisitex-menu-toggle{
                display: block;
            }

.aisitex-header .aisitex-header-cta{
                display: none;
            }}

.aisitex-footer {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, "Apple Color Emoji", Arial, sans-serif;
    line-height: 1.6;
    color: #37352f;
}

.aisitex-footer, .aisitex-footer *{
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

.aisitex-footer a{
            color: inherit;
            text-decoration: none;
        }

.aisitex-footer{
            border-top: 1px solid #e9e9e7;
            padding: 40px 24px;
            background: #ffffff;
            color: #787774;
            font-size: 0.9rem;
        }

.aisitex-footer .aisitex-footer-container{
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

.aisitex-footer .aisitex-footer-links{
            display: flex;
            gap: 24px;
        }

.aisitex-footer .aisitex-footer-links a:hover{
            color: #37352f;
        }