:root {
            --aisitex-bg: #0F172A;
            --aisitex-surface: #1E293B;
            --aisitex-card-bg: #FFFFFF;
            --aisitex-primary: #2563EB;
            --aisitex-primary-hover: #1D4ED8;
            --aisitex-secondary: #3B82F6;
            --aisitex-text-main: #F8FAFC;
            --aisitex-text-muted: #94A3B8;
            --aisitex-text-dark: #0F172A;
            --aisitex-text-dark-muted: #475569;
            --aisitex-border: #334155;
            --aisitex-border-light: #E2E8F0;
            --aisitex-radius: 12px;
            --aisitex-container: 1200px;
        }

        *, *::before, *::after {
            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(--aisitex-bg);
            color: var(--aisitex-text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

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

        /* 导航栏样式 */
        .aisitex-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 23, 42, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--aisitex-border);
        }

        .aisitex-nav-container {
            max-width: var(--aisitex-container);
            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: 1.15rem;
            letter-spacing: -0.5px;
        }

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

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

        .aisitex-nav-link {
            font-size: 0.95rem;
            color: var(--aisitex-text-muted);
            transition: color 0.2s ease;
            position: relative;
            padding: 8px 0;
        }

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

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

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

        .aisitex-btn-sm {
            background-color: var(--aisitex-primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background-color 0.2s;
        }

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

        .aisitex-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--aisitex-text-main);
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* 首屏舞台 (Hero Stage) */
        .aisitex-hero {
            position: relative;
            padding: 80px 0 100px;
            background: linear-gradient(180deg, #0F172A 0%, #1E293B 100%);
            border-bottom: 1px solid var(--aisitex-border);
        }

        .aisitex-hero-container {
            max-width: var(--aisitex-container);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: 48px;
            align-items: center;
        }

        .aisitex-hero-content {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .aisitex-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(37, 99, 235, 0.15);
            border: 1px solid rgba(59, 130, 246, 0.3);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            color: #93C5FD;
            width: fit-content;
        }

        .aisitex-hero-title {
            font-size: clamp(2.2rem, 4vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
        }

        .aisitex-hero-desc {
            font-size: 1.1rem;
            color: var(--aisitex-text-muted);
            line-height: 1.7;
        }

        .aisitex-hero-actions {
            display: flex;
            gap: 16px;
            margin-top: 8px;
        }

        .aisitex-btn-primary {
            background-color: var(--aisitex-primary);
            color: #fff;
            padding: 14px 28px;
            border-radius: var(--aisitex-radius);
            font-size: 1rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
            transition: all 0.2s ease;
        }

        .aisitex-btn-primary:hover {
            background-color: var(--aisitex-primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.6);
        }

        .aisitex-btn-secondary {
            background-color: transparent;
            color: var(--aisitex-text-main);
            border: 1px solid var(--aisitex-border);
            padding: 14px 28px;
            border-radius: var(--aisitex-radius);
            font-size: 1rem;
            font-weight: 600;
            transition: all 0.2s ease;
        }

        .aisitex-btn-secondary:hover {
            border-color: var(--aisitex-secondary);
            background-color: rgba(59, 130, 246, 0.05);
        }

        .aisitex-hero-visual {
            position: relative;
            border-radius: var(--aisitex-radius);
            overflow: hidden;
            border: 1px solid var(--aisitex-border);
            background: var(--aisitex-surface);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }

        .aisitex-hero-visual img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 浅色过渡区块样式 (Light Transition Sections) */
        .aisitex-section {
            padding: 100px 0;
            background-color: #F8FAFC;
            color: var(--aisitex-text-dark);
        }

        .aisitex-section-alt {
            background-color: #FFFFFF;
        }

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

        .aisitex-section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 64px;
        }

        .aisitex-section-heading {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--aisitex-text-dark);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

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

        /* 功能亮点区块 (Feature Highlight) */
        .aisitex-feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .aisitex-feature-content {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .aisitex-feature-item {
            display: flex;
            gap: 20px;
        }

        .aisitex-feature-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background-color: #EFF6FF;
            color: var(--aisitex-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.25rem;
        }

        .aisitex-feature-text h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--aisitex-text-dark);
            margin-bottom: 8px;
        }

        .aisitex-feature-text p {
            font-size: 1rem;
            color: var(--aisitex-text-dark-muted);
            line-height: 1.6;
        }

        .aisitex-feature-image {
            border-radius: var(--aisitex-radius);
            overflow: hidden;
            border: 1px solid var(--aisitex-border-light);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
            background: #fff;
        }

        /* 矩阵概览区块 (Matrix Overview) */
        .aisitex-matrix-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .aisitex-matrix-card {
            background: #F8FAFC;
            border: 1px solid var(--aisitex-border-light);
            border-radius: var(--aisitex-radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .aisitex-matrix-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
        }

        .aisitex-matrix-img-wrap {
            width: 100%;
            height: 280px;
            overflow: hidden;
            background: #EDF2F7;
        }

        .aisitex-matrix-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .aisitex-matrix-card:hover .aisitex-matrix-img-wrap img {
            transform: scale(1.03);
        }

        .aisitex-matrix-body {
            padding: 32px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .aisitex-matrix-body h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--aisitex-text-dark);
        }

        .aisitex-matrix-body p {
            font-size: 1rem;
            color: var(--aisitex-text-dark-muted);
            line-height: 1.6;
        }

        /* 页脚样式 */
        .aisitex-footer {
            background-color: var(--aisitex-bg);
            border-top: 1px solid var(--aisitex-border);
            padding: 60px 0 40px;
            color: var(--aisitex-text-muted);
            font-size: 0.9rem;
        }

        .aisitex-footer-container {
            max-width: var(--aisitex-container);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-direction: column;
            gap: 40px;
        }

        .aisitex-footer-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 24px;
        }

        .aisitex-footer-links {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }

        .aisitex-footer-links a {
            color: var(--aisitex-text-muted);
            transition: color 0.2s;
        }

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

        .aisitex-footer-bottom {
            border-top: 1px solid var(--aisitex-border);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* 响应式媒体查询 */
        @media (max-width: 968px) {
            .aisitex-hero-container {
                grid-template-columns: 1fr;
                gap: 40px;
                text-align: center;
            }

            .aisitex-hero-content {
                align-items: center;
            }

            .aisitex-badge {
                margin: 0 auto;
            }

            .aisitex-feature-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .aisitex-matrix-grid {
                grid-template-columns: 1fr;
            }

            .aisitex-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--aisitex-bg);
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid var(--aisitex-border);
                gap: 16px;
            }

            .aisitex-nav.is-expanded {
                display: flex;
            }

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

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

.aisitex-header {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #F8FAFC;
}

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

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

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

.aisitex-header{
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 23, 42, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid #334155;
        }

.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: 1.15rem;
            letter-spacing: -0.5px;
        }

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

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

.aisitex-header .aisitex-nav-link{
            font-size: 0.95rem;
            color: #94A3B8;
            transition: color 0.2s ease;
            position: relative;
            padding: 8px 0;
        }

.aisitex-header .aisitex-nav-link:hover, .aisitex-header .aisitex-nav-link.active{
            color: #F8FAFC;
        }

.aisitex-header .aisitex-nav-link.active::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background-color: #2563EB;
            border-radius: 2px;
        }

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

.aisitex-header .aisitex-btn-sm{
            background-color: #2563EB;
            color: #fff;
            padding: 8px 20px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background-color 0.2s;
        }

.aisitex-header .aisitex-btn-sm:hover{
            background-color: #1D4ED8;
        }

.aisitex-header .aisitex-menu-toggle{
            display: none;
            background: none;
            border: none;
            color: #F8FAFC;
            font-size: 1.5rem;
            cursor: pointer;
        }

@media (max-width: 968px){.aisitex-header .aisitex-nav{
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #0F172A;
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid #334155;
                gap: 16px;
            }

.aisitex-header .aisitex-nav.is-expanded{
                display: flex;
            }

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

.aisitex-header .aisitex-nav-actions{
                display: none;
            }}

.aisitex-footer {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #F8FAFC;
}

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

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

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

.aisitex-footer .aisitex-brand{
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.15rem;
            letter-spacing: -0.5px;
        }

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

.aisitex-footer{
            background-color: #0F172A;
            border-top: 1px solid #334155;
            padding: 60px 0 40px;
            color: #94A3B8;
            font-size: 0.9rem;
        }

.aisitex-footer .aisitex-footer-container{
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-direction: column;
            gap: 40px;
        }

.aisitex-footer .aisitex-footer-top{
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 24px;
        }

.aisitex-footer .aisitex-footer-links{
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }

.aisitex-footer .aisitex-footer-links a{
            color: #94A3B8;
            transition: color 0.2s;
        }

.aisitex-footer .aisitex-footer-links a:hover{
            color: #F8FAFC;
        }

.aisitex-footer .aisitex-footer-bottom{
            border-top: 1px solid #334155;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }