:root {
            --aisitex-primary: #FF5722;
            --aisitex-secondary: #0052D9;
            --aisitex-bg: #F8F9FA;
            --aisitex-text: #111827;
            --aisitex-text-light: #4B5563;
            --aisitex-border: #E5E7EB;
            --aisitex-white: #FFFFFF;
            --aisitex-card-bg: #FFFFFF;
        }

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

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

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

        /* 顶部导航组件 */
        .aisitex-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(248, 249, 250, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--aisitex-border);
        }

        .aisitex-nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .aisitex-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 20px;
            color: var(--aisitex-text);
        }

        .aisitex-brand img {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            object-fit: contain;
        }

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

        .aisitex-nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--aisitex-text-light);
            transition: color 0.2s;
            position: relative;
            padding: 8px 0;
        }

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

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

        .aisitex-nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .aisitex-btn-primary {
            background-color: var(--aisitex-primary);
            color: var(--aisitex-white);
            padding: 10px 20px;
            border-radius: 6px;
            font-weight: 600;
            font-size: 14px;
            transition: background-color 0.2s, transform 0.1s;
        }

        .aisitex-btn-primary:hover {
            background-color: #E64A19;
            transform: translateY(-1px);
        }

        .aisitex-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 30px;
            height: 30px;
            position: relative;
        }

        .aisitex-menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--aisitex-text);
            position: absolute;
            left: 3px;
            transition: 0.3s;
        }

        .aisitex-menu-toggle span:nth-child(1) { top: 8px; }
        .aisitex-menu-toggle span:nth-child(2) { top: 14px; }
        .aisitex-menu-toggle span:nth-child(3) { top: 20px; }

        .aisitex-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 998;
        }

        /* 首屏组件 */
        .aisitex-hero {
            max-width: 1200px;
            margin: 0 auto;
            padding: 60px 24px 80px;
        }

        .aisitex-hero-badge-bar {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: rgba(255, 87, 34, 0.1);
            color: var(--aisitex-primary);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .aisitex-hero-grid {
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: 48px;
            align-items: center;
        }

        .aisitex-hero-content h1 {
            font-size: 48px;
            line-height: 1.15;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            color: var(--aisitex-text);
        }

        .aisitex-hero-content p {
            font-size: 18px;
            color: var(--aisitex-text-light);
            line-height: 1.6;
            margin-bottom: 36px;
        }

        .aisitex-hero-btns {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 40px;
        }

        .aisitex-btn-secondary {
            background-color: transparent;
            color: var(--aisitex-text);
            border: 1px solid var(--aisitex-border);
            padding: 10px 20px;
            border-radius: 6px;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.2s;
        }

        .aisitex-btn-secondary:hover {
            border-color: var(--aisitex-text-light);
            background-color: rgba(0,0,0,0.02);
        }

        .aisitex-hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: var(--aisitex-text-light);
        }

        .aisitex-hero-badges span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .aisitex-hero-badges svg {
            width: 16px;
            height: 16px;
            fill: var(--aisitex-primary);
        }

        .aisitex-hero-visual {
            position: relative;
        }

        .aisitex-hero-visual img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
            border: 1px solid var(--aisitex-border);
            background: #111;
        }

        /* 章节通用结构 */
        .aisitex-section {
            padding: 90px 0;
            position: relative;
        }

        .aisitex-section.tinted {
            background-color: #FFFFFF;
            border-top: 1px solid var(--aisitex-border);
            border-bottom: 1px solid var(--aisitex-border);
        }

        .aisitex-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

        .aisitex-section-header h2 {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
            line-height: 1.25;
        }

        .aisitex-section-header p {
            font-size: 16px;
            color: var(--aisitex-text-light);
            line-height: 1.7;
        }

        /* 场景切片组件 (Feature Slice) */
        .aisitex-feature-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .aisitex-feature-card {
            background-color: var(--aisitex-white);
            border: 1px solid var(--aisitex-border);
            border-radius: 12px;
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .aisitex-feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.05);
        }

        .aisitex-feature-card h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .aisitex-feature-card p {
            font-size: 15px;
            color: var(--aisitex-text-light);
            margin-bottom: 24px;
            line-height: 1.6;
        }

        .aisitex-feature-card img {
            width: 100%;
            height: auto;
            border-radius: 8px;
            border: 1px solid var(--aisitex-border);
            background: #111;
        }

        /* AI生态与工具组件 (AI Ecosystem) */
        .aisitex-ai-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .aisitex-ai-card {
            background-color: #FFFFFF;
            border: 1px solid var(--aisitex-border);
            border-radius: 12px;
            padding: 40px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .aisitex-ai-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .aisitex-ai-content p {
            font-size: 15px;
            color: var(--aisitex-text-light);
        }

        .aisitex-ai-card img {
            width: 100%;
            height: auto;
            border-radius: 8px;
            border: 1px solid var(--aisitex-border);
        }

        /* 社区预览组件 (Community Preview) */
        .aisitex-community-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 60px;
            align-items: center;
        }

        .aisitex-community-info h2 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.25;
        }

        .aisitex-community-info p {
            font-size: 16px;
            color: var(--aisitex-text-light);
            line-height: 1.7;
            margin-bottom: 32px;
        }

        .aisitex-community-visual img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            border: 1px solid var(--aisitex-border);
            box-shadow: 0 16px 32px rgba(0,0,0,0.06);
            background: #111;
        }

        /* 底部导航指引与尾部 */
        .aisitex-footer {
            background-color: #111827;
            color: #9CA3AF;
            padding: 60px 0 40px;
            font-size: 14px;
        }

        .aisitex-footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .aisitex-footer-brand p {
            margin-top: 16px;
            color: #6B7280;
            line-height: 1.6;
        }

        .aisitex-footer-col h4 {
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .aisitex-footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .aisitex-footer-col a {
            color: #9CA3AF;
            transition: color 0.2s;
        }

        .aisitex-footer-col a:hover {
            color: #FFFFFF;
        }

        .aisitex-footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 24px 24px 0;
            border-top: 1px solid #1F2937;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #6B7280;
            font-size: 13px;
        }

        /* 响应式媒体查询 */
        @media (max-width: 968px) {
            .aisitex-hero-grid,
            .aisitex-feature-grid,
            .aisitex-ai-grid,
            .aisitex-community-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .aisitex-hero-content h1 {
                font-size: 36px;
            }

            .aisitex-nav-menu {
                display: none;
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                background-color: var(--aisitex-white);
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                border-bottom: 1px solid var(--aisitex-border);
            }

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

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

            .aisitex-nav-overlay.active {
                display: block;
            }

            .aisitex-footer-container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

.aisitex-header {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #111827;
}

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

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

.aisitex-header{
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(248, 249, 250, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid #E5E7EB;
        }

.aisitex-header .aisitex-nav-container{
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

.aisitex-header .aisitex-brand{
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 20px;
            color: #111827;
        }

.aisitex-header .aisitex-brand img{
            width: 36px;
            height: 36px;
            border-radius: 8px;
            object-fit: contain;
        }

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

.aisitex-header .aisitex-nav-link{
            font-size: 15px;
            font-weight: 500;
            color: #4B5563;
            transition: color 0.2s;
            position: relative;
            padding: 8px 0;
        }

.aisitex-header .aisitex-nav-link:hover, .aisitex-header .aisitex-nav-link.active{
            color: #FF5722;
        }

.aisitex-header .aisitex-nav-link.active::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #FF5722;
            border-radius: 2px;
        }

.aisitex-header .aisitex-nav-actions{
            display: flex;
            align-items: center;
            gap: 16px;
        }

.aisitex-header .aisitex-btn-primary{
            background-color: #FF5722;
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: 6px;
            font-weight: 600;
            font-size: 14px;
            transition: background-color 0.2s, transform 0.1s;
        }

.aisitex-header .aisitex-btn-primary:hover{
            background-color: #E64A19;
            transform: translateY(-1px);
        }

.aisitex-header .aisitex-menu-toggle{
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 30px;
            height: 30px;
            position: relative;
        }

.aisitex-header .aisitex-menu-toggle span{
            display: block;
            width: 24px;
            height: 2px;
            background-color: #111827;
            position: absolute;
            left: 3px;
            transition: 0.3s;
        }

.aisitex-header .aisitex-menu-toggle span:nth-child(1){ top: 8px; }

.aisitex-header .aisitex-menu-toggle span:nth-child(2){ top: 14px; }

.aisitex-header .aisitex-menu-toggle span:nth-child(3){ top: 20px; }

@media (max-width: 968px){.aisitex-header .aisitex-nav-menu{
                display: none;
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                background-color: #FFFFFF;
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                border-bottom: 1px solid #E5E7EB;
            }

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

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

.aisitex-header .aisitex-nav-overlay.active{
                display: block;
            }}

.aisitex-footer {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #111827;
}

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

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

.aisitex-footer .aisitex-brand{
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 20px;
            color: #111827;
        }

.aisitex-footer .aisitex-brand img{
            width: 36px;
            height: 36px;
            border-radius: 8px;
            object-fit: contain;
        }

.aisitex-footer{
            background-color: #111827;
            color: #9CA3AF;
            padding: 60px 0 40px;
            font-size: 14px;
        }

.aisitex-footer .aisitex-footer-container{
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

.aisitex-footer .aisitex-footer-brand p{
            margin-top: 16px;
            color: #6B7280;
            line-height: 1.6;
        }

.aisitex-footer .aisitex-footer-col h4{
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 20px;
        }

.aisitex-footer .aisitex-footer-col ul{
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

.aisitex-footer .aisitex-footer-col a{
            color: #9CA3AF;
            transition: color 0.2s;
        }

.aisitex-footer .aisitex-footer-col a:hover{
            color: #FFFFFF;
        }

.aisitex-footer .aisitex-footer-bottom{
            max-width: 1200px;
            margin: 0 auto;
            padding: 24px 24px 0;
            border-top: 1px solid #1F2937;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #6B7280;
            font-size: 13px;
        }

@media (max-width: 968px){.aisitex-footer .aisitex-footer-container{
                grid-template-columns: 1fr;
                gap: 32px;
            }}