:root:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            --aisitex-primary: #0284C7;
            --aisitex-secondary: #0EA5E9;
            --aisitex-bg: #F8FAFC;
            --aisitex-surface: #FFFFFF;
            --aisitex-text: #0F172A;
            --aisitex-text-muted: #64748B;
            --aisitex-radius: 12px;
            --aisitex-max-width: 1200px;
            --aisitex-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }
*:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
body:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-family: var(--aisitex-font-sans);
            background-color: var(--aisitex-bg);
            color: var(--aisitex-text);
            line-height: 1.6;
            overflow-x: hidden;
        }
/* --- 导航栏复用与修正 --- */
.aisitex-header.is-scrolled:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: var(--aisitex-surface);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
        }
/* --- 沉浸式首屏 --- */
.aisitex-hero:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            padding-top: 140px;
            padding-bottom: 80px;
            position: relative;
            background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
            overflow: hidden;
        }
.aisitex-hero-container:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            max-width: var(--aisitex-max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
            align-items: center;
        }
.aisitex-hero-content:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            position: relative;
            z-index: 2;
        }
.aisitex-hero-tag:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: inline-block;
            padding: 6px 14px;
            background: rgba(2, 132, 199, 0.1);
            color: var(--aisitex-primary);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
        }
.aisitex-hero-title:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: clamp(32px, 5vw, 52px);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
        }
.aisitex-hero-desc:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 18px;
            color: var(--aisitex-text-muted);
            margin-bottom: 32px;
            max-width: 540px;
        }
.aisitex-hero-action:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: flex;
            align-items: center;
            gap: 20px;
        }
.aisitex-btn-primary:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: var(--aisitex-primary);
            color: #FFF;
            padding: 14px 32px;
            border-radius: var(--aisitex-radius);
            text-decoration: none;
            font-weight: 600;
            box-shadow: 0 10px 20px rgba(2, 132, 199, 0.25);
            transition: transform 0.3s, box-shadow 0.3s;
        }
.aisitex-btn-primary:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            transform: translateY(-2px);
            box-shadow: 0 15px 30px rgba(2, 132, 199, 0.35);
        }
.aisitex-hero-visual:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            position: relative;
        }
.aisitex-hero-visual img:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            width: 100%;
            height: auto;
            border-radius: var(--aisitex-radius);
            transform: perspective(1000px) rotateY(-5deg);
            box-shadow: 30px 40px 80px rgba(15, 23, 42, 0.1);
        }
/* --- 功能色带与章节 --- */
.aisitex-section:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            padding: 100px 0;
        }
.aisitex-section-alt:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background-color: var(--aisitex-surface);
        }
.aisitex-container:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            max-width: var(--aisitex-max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
.aisitex-feature-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 80px;
            align-items: center;
        }
.aisitex-feature-grid.reverse:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            direction: rtl;
        }
.aisitex-feature-grid.reverse .aisitex-feature-text:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            direction: ltr;
        }
.aisitex-feature-image:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            position: relative;
        }
.aisitex-feature-image img:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            width: 100%;
            height: auto;
            display: block;
        }
.aisitex-feature-text h2:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 20px;
        }
.aisitex-feature-text .summary:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 18px;
            color: var(--aisitex-text-muted);
            margin-bottom: 40px;
        }
.aisitex-feature-items:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: grid;
            gap: 30px;
        }
.aisitex-feature-item:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: flex;
            gap: 20px;
        }
.aisitex-feature-icon:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: rgba(2, 132, 199, 0.05);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--aisitex-primary);
        }
.aisitex-feature-info h3:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }
.aisitex-feature-info p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            color: var(--aisitex-text-muted);
            font-size: 15px;
        }
/* --- 平台适配 --- */
.aisitex-platform-section:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            text-align: center;
            padding: 100px 0;
            background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
        }
.aisitex-platform-section h2:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 50px;
        }
.aisitex-platform-stage:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            max-width: 900px;
            margin: 0 auto;
            position: relative;
        }
.aisitex-platform-stage img:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            width: 100%;
            height: auto;
            filter: drop-shadow(0 20px 40px rgba(0,0,0,0.08));
        }
/* --- 底部CTA --- */
.aisitex-footer-cta:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            padding: 80px 0;
            text-align: center;
            background-color: var(--aisitex-text);
            color: #FFF;
        }
.aisitex-footer-cta h2:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 32px;
            margin-bottom: 20px;
        }
.aisitex-footer-cta p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            color: rgba(255,255,255,0.7);
            margin-bottom: 40px;
        }
/* --- 底部版权 --- */
/* --- 响应式适配 --- */
@media (max-width: 992px) {.aisitex-hero-container:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)), .aisitex-feature-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                grid-template-columns: 1fr;
                gap: 60px;
                text-align: center;
            }
.aisitex-hero-content:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)), .aisitex-hero-desc:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                max-width: 100%;
            }
.aisitex-hero-action:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                justify-content: center;
            }
.aisitex-hero-visual img:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                transform: none;
            }
.aisitex-feature-grid.reverse:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                direction: ltr;
            }
.aisitex-feature-item:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                text-align: left;
            }}
@media (max-width: 768px) {.nav-open .aisitex-nav-links:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
.aisitex-hero:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                padding-top: 100px;
            }
.aisitex-hero-title:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                font-size: 36px;
            }}

.aisitex-header {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #0F172A;
}

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

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

.aisitex-header{
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(248, 250, 252, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid #E2E8F0;
            z-index: 1000;
            transition: all 0.3s ease;
        }

.aisitex-header.is-scrolled{
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
        }

.aisitex-header .aisitex-nav-container{
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 80px;
            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: #0F172A;
        }

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

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

.aisitex-header .aisitex-nav-link{
            font-size: 15px;
            font-weight: 500;
            color: #64748B;
            transition: color 0.2s;
            position: relative;
            padding: 8px 0;
        }

.aisitex-header .aisitex-nav-link:hover, .aisitex-header .aisitex-nav-link.active{
            color: #0284C7;
        }

.aisitex-header .aisitex-nav-link.active::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #0284C7;
            border-radius: 2px;
        }

.aisitex-header .aisitex-nav-toggle{
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

.aisitex-header .aisitex-nav-toggle span{
            display: block;
            width: 24px;
            height: 2px;
            background: #0F172A;
            margin: 5px 0;
            transition: 0.3s;
        }

@media (max-width: 968px){.aisitex-header .aisitex-nav-links{
                display: none;
                position: absolute;
                top: 80px;
                left: 0;
                width: 100%;
                background: #FFFFFF;
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid #E2E8F0;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                gap: 16px;
                text-align: center;
            }

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

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

.aisitex-footer {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #0F172A;
}

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

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

.aisitex-footer{
            background-color: #0F172A;
            color: #94A3B8;
            padding: 60px 0 40px;
            border-top: 1px solid #1E293B;
        }

.aisitex-footer .aisitex-footer-content{
            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: flex-start;
            flex-wrap: wrap;
            gap: 40px;
        }

.aisitex-footer .aisitex-footer-brand{
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 320px;
        }

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

.aisitex-footer .aisitex-footer-brand p{
            font-size: 14px;
            line-height: 1.6;
        }

.aisitex-footer .aisitex-footer-links{
            display: flex;
            gap: 60px;
            flex-wrap: wrap;
        }

.aisitex-footer .aisitex-footer-col{
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

.aisitex-footer .aisitex-footer-col h4{
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 600;
        }

.aisitex-footer .aisitex-footer-col a{
            font-size: 14px;
            transition: color 0.2s;
        }

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

.aisitex-footer .aisitex-footer-bottom{
            padding-top: 30px;
            border-top: 1px solid #1E293B;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 14px;
        }