:root:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            --aisitex-primary: #FF6600;
            --aisitex-primary-hover: #E55C00;
            --aisitex-secondary: #333333;
            --aisitex-bg: #F8F9FA;
            --aisitex-surface: #FFFFFF;
            --aisitex-text: #1A1A1A;
            --aisitex-text-muted: #666666;
            --aisitex-radius: 12px;
            --aisitex-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            --aisitex-border: #EAEAEA;
        }
*:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
body:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Semibold", "Inter", "Microsoft YaHei", sans-serif;
            background-color: var(--aisitex-bg);
            color: var(--aisitex-text);
            line-height: 1.6;
            overflow-x: hidden;
        }
/* 导航栏复用规范 */
.aisitex-nav-overlay:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.4);
            z-index: 998;
        }
/* 页面专属样式 */
.aisitex-container:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
/* 首屏：沉浸式单主张与不对称留白 */
.aisitex-download-hero:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            padding: 80px 0 60px;
            background: #FFFFFF;
            border-bottom: 1px solid var(--aisitex-border);
        }
.aisitex-hero-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: grid;
            grid-template-columns: 4fr 8fr;
            gap: 48px;
            align-items: center;
        }
.aisitex-hero-content:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
.aisitex-hero-badge:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 102, 0, 0.1);
            color: var(--aisitex-primary);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            width: fit-content;
        }
.aisitex-hero-title:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 48px;
            font-weight: 600;
            line-height: 1.2;
            color: var(--aisitex-text);
            letter-spacing: -1px;
        }
.aisitex-hero-desc:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 16px;
            color: var(--aisitex-text-muted);
            line-height: 1.7;
        }
.aisitex-hero-visual:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            position: relative;
            background: linear-gradient(135deg, #F8F9FA 0%, #EDF1F5 100%);
            border-radius: 24px;
            padding: 24px;
            border: 1px solid var(--aisitex-border);
            box-shadow: var(--aisitex-shadow);
            overflow: hidden;
        }
.aisitex-hero-img:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.08);
        }
/* 章节色带切换：平台分栏下载区 */
.aisitex-section:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            padding: 80px 0;
        }
.aisitex-section-alt:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background-color: #F0F2F5;
        }
.aisitex-section-header:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            text-align: center;
            max-width: 700px;
            margin: 0 auto 56px;
        }
.aisitex-section-title:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 36px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
.aisitex-section-summary:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 16px;
            color: var(--aisitex-text-muted);
            line-height: 1.6;
        }
/* 四宫格平台分栏卡片 */
.aisitex-platforms-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
.aisitex-platform-card:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: var(--aisitex-surface);
            border-radius: var(--aisitex-radius);
            padding: 32px 24px;
            box-shadow: var(--aisitex-shadow);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            border: 1px solid var(--aisitex-border);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
.aisitex-platform-card:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            transform: translateY(-4px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
        }
.aisitex-platform-icon:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            width: 56px;
            height: 56px;
            background: rgba(255, 102, 0, 0.1);
            color: var(--aisitex-primary);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 24px;
        }
.aisitex-platform-info:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            margin-bottom: 24px;
        }
.aisitex-platform-name:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }
.aisitex-platform-support:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 14px;
            color: var(--aisitex-text-muted);
            margin-bottom: 4px;
        }
.aisitex-platform-size:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 13px;
            color: var(--aisitex-primary);
            font-weight: 500;
        }
.aisitex-btn-download:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            background-color: var(--aisitex-primary);
            color: white;
            padding: 12px 20px;
            border-radius: 10px;
            text-decoration: none;
            font-weight: 600;
            font-size: 15px;
            box-shadow: 0 4px 14px rgba(255, 102, 0, 0.3);
            transition: background-color 0.2s, transform 0.2s;
            border: none;
            cursor: pointer;
        }
.aisitex-btn-download:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background-color: var(--aisitex-primary-hover);
            transform: translateY(-1px);
        }
/* 证据与体验横幅 */
.aisitex-evidence-banner:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: var(--aisitex-surface);
            border-radius: 20px;
            padding: 48px;
            border: 1px solid var(--aisitex-border);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            box-shadow: var(--aisitex-shadow);
        }
.aisitex-evidence-text h3:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 28px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
.aisitex-evidence-text p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            color: var(--aisitex-text-muted);
            line-height: 1.7;
            margin-bottom: 24px;
        }
.aisitex-feature-list:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
.aisitex-feature-item:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 15px;
            font-weight: 500;
        }
.aisitex-feature-item svg:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            color: var(--aisitex-primary);
            flex-shrink: 0;
        }
.aisitex-evidence-media img:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            width: 100%;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.06);
        }
/* 页脚 */
.aisitex-footer-content:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
/* 响应式断点 */
@media (max-width: 1024px) {.aisitex-hero-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                grid-template-columns: 1fr;
                gap: 32px;
            }
.aisitex-platforms-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                grid-template-columns: repeat(2, 1fr);
            }
.aisitex-evidence-banner:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                grid-template-columns: 1fr;
            }}
@media (max-width: 768px) {.aisitex-nav-menu.active:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                display: flex;
            }
.aisitex-hero-title:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                font-size: 36px;
            }
.aisitex-platforms-grid:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                grid-template-columns: 1fr;
            }}

.aisitex-header {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Semibold", "Inter", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #1A1A1A;
}

.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-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid #EAEAEA;
        }

.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: 600;
            font-size: 20px;
            color: #1A1A1A;
        }

.aisitex-header .aisitex-brand-logo{
            width: 36px;
            height: 36px;
            background-color: #FF6600;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            font-size: 18px;
        }

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

.aisitex-header .aisitex-nav-link{
            font-size: 15px;
            font-weight: 500;
            color: #666666;
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            position: relative;
            padding: 8px 0;
        }

.aisitex-header .aisitex-nav-link:hover, .aisitex-header .aisitex-nav-link.active{
            color: #FF6600;
        }

.aisitex-header .aisitex-nav-link.active::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #FF6600;
            border-radius: 2px;
        }

.aisitex-header .aisitex-menu-toggle{
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 30px;
            height: 24px;
            position: relative;
            z-index: 1001;
        }

.aisitex-header .aisitex-menu-toggle span{
            display: block;
            width: 100%;
            height: 2px;
            background-color: #1A1A1A;
            position: absolute;
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

.aisitex-header .aisitex-menu-toggle span:nth-child(1){ top: 0; }

.aisitex-header .aisitex-menu-toggle span:nth-child(2){ top: 11px; }

.aisitex-header .aisitex-menu-toggle span:nth-child(3){ top: 22px; }

.aisitex-header .aisitex-menu-toggle.active span:nth-child(1){
            transform: translateY(11px) rotate(45deg);
        }

.aisitex-header .aisitex-menu-toggle.active span:nth-child(2){
            opacity: 0;
        }

.aisitex-header .aisitex-menu-toggle.active span:nth-child(3){
            transform: translateY(-11px) rotate(-45deg);
        }

@media (max-width: 968px){.aisitex-header .aisitex-nav-menu{
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                background-color: white;
                flex-direction: column;
                padding: 24px;
                gap: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            }

.aisitex-header .aisitex-nav-menu.active{
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

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

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

.aisitex-footer {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Semibold", "Inter", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #1A1A1A;
}

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

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

.aisitex-footer .aisitex-brand-logo{
            width: 36px;
            height: 36px;
            background-color: #FF6600;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            font-size: 18px;
        }

.aisitex-footer{
            background-color: #1A1A1A;
            color: #A0A0A0;
            padding: 60px 0 30px;
            font-size: 14px;
        }

.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: flex-start;
            flex-wrap: wrap;
            gap: 30px;
        }

.aisitex-footer .aisitex-footer-brand{
            color: white;
            font-weight: 600;
            font-size: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

.aisitex-footer .aisitex-footer-links{
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
        }

.aisitex-footer .aisitex-footer-col h4{
            color: white;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }

.aisitex-footer .aisitex-footer-col ul{
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

.aisitex-footer .aisitex-footer-col a{
            color: #A0A0A0;
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

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

.aisitex-footer .aisitex-footer-bottom{
            border-top: 1px solid #333333;
            padding-top: 30px;
            text-align: center;
            color: #707070;
            font-size: 13px;
        }