:root:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            --aisitex-primary: #3a76f0;
            --aisitex-primary-dark: #285bc2;
            --aisitex-secondary: #121826;
            --aisitex-bg: #f8fafc;
            --aisitex-surface: #ffffff;
            --aisitex-text: #0f172a;
            --aisitex-text-muted: #64748b;
            --aisitex-radius: 12px;
            --aisitex-max-width: 1200px;
        }
*: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: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--aisitex-bg);
            color: var(--aisitex-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
/* 共享头部样式复用 */
/* 页面专有英雄区 (Hero) */
.aisitex-feat-hero:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            max-width: var(--aisitex-max-width);
            margin: 0 auto;
            padding: 80px 24px 60px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
.aisitex-feat-badge:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            background: #e0e7ff;
            color: var(--aisitex-primary);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }
.aisitex-feat-hero h1:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 42px;
            line-height: 1.2;
            color: var(--aisitex-secondary);
            margin-bottom: 20px;
            font-weight: 700;
        }
.aisitex-feat-hero p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 18px;
            color: var(--aisitex-text-muted);
            margin-bottom: 32px;
        }
.aisitex-steps-line:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: flex;
            flex-direction: column;
            gap: 16px;
            border-left: 2px solid #cbd5e1;
            padding-left: 20px;
            margin-top: 24px;
        }
.aisitex-step-item:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            position: relative;
        }
.aisitex-step-item:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *))::before {
            content: "";
            position: absolute;
            left: -27px;
            top: 6px;
            width: 12px;
            height: 12px;
            background: var(--aisitex-primary);
            border-radius: 50%;
            border: 2px solid #fff;
        }
.aisitex-step-title:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-weight: 600;
            color: var(--aisitex-secondary);
            font-size: 15px;
        }
.aisitex-step-desc:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 14px;
            color: var(--aisitex-text-muted);
        }
.aisitex-feat-hero-visual:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: var(--aisitex-surface);
            border-radius: var(--aisitex-radius);
            padding: 24px;
            box-shadow: 0 20px 40px rgba(18, 24, 38, 0.06);
            text-align: center;
            border: 1px solid #e2e8f0;
        }
.aisitex-feat-hero-visual img:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            max-width: 100%;
            height: auto;
            border-radius: 8px;
        }
/* 章节色带与流式网格正文 */
.aisitex-section:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            padding: 80px 24px;
            border-top: 1px solid #e2e8f0;
        }
.aisitex-section:nth-child(even):not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: #ffffff;
        }
.aisitex-container:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            max-width: var(--aisitex-max-width);
            margin: 0 auto;
        }
.aisitex-section-header:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            max-width: 700px;
            margin: 0 auto 60px;
            text-align: center;
        }
.aisitex-section-header h2:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 32px;
            color: var(--aisitex-secondary);
            margin-bottom: 16px;
            font-weight: 700;
        }
.aisitex-section-header p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 16px;
            color: var(--aisitex-text-muted);
        }
.aisitex-grid-split:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
.aisitex-grid-split.reverse:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            direction: rtl;
        }
.aisitex-grid-split.reverse > *:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            direction: ltr;
        }
.aisitex-feature-content h3:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 24px;
            color: var(--aisitex-secondary);
            margin-bottom: 16px;
            font-weight: 600;
        }
.aisitex-feature-content p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 16px;
            color: var(--aisitex-text-muted);
            margin-bottom: 24px;
        }
.aisitex-feature-list:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
.aisitex-feature-list li:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--aisitex-secondary);
            font-weight: 500;
        }
.aisitex-feature-list li:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *))::before {
            content: "✓";
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            background: #e0e7ff;
            color: var(--aisitex-primary);
            border-radius: 50%;
            font-size: 12px;
            font-weight: bold;
        }
.aisitex-media-box:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: #f1f5f9;
            border-radius: var(--aisitex-radius);
            padding: 30px;
            display: flex;
            justify-content: center;
            align-items: center;
            border: 1px solid #e2e8f0;
        }
.aisitex-media-box img:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            max-width: 100%;
            height: auto;
            max-height: 480px;
            border-radius: 8px;
            object-fit: contain;
        }
/* 强弱分明的 CTA 行动区块 */
.aisitex-cta-banner:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            max-width: var(--aisitex-max-width);
            margin: 80px auto;
            padding: 60px 40px;
            background: var(--aisitex-secondary);
            border-radius: var(--aisitex-radius);
            text-align: center;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }
.aisitex-cta-banner h2:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 32px;
            margin-bottom: 16px;
            font-weight: 700;
        }
.aisitex-cta-banner p:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            font-size: 16px;
            color: #94a3b8;
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
.aisitex-btn-group:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: flex;
            justify-content: center;
            gap: 16px;
        }
.aisitex-btn:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            border-radius: var(--aisitex-radius);
            font-weight: 600;
            text-decoration: none;
            transition: transform 0.2s, background 0.2s;
            font-size: 15px;
        }
.aisitex-btn-primary:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: var(--aisitex-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(58, 118, 240, 0.4);
        }
.aisitex-btn-primary:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: var(--aisitex-primary-dark);
            transform: translateY(-2px);
        }
.aisitex-btn-secondary:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
.aisitex-btn-secondary:hover:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
            background: rgba(255, 255, 255, 0.15);
        }
/* 页脚样式 */
/* 响应式断点适配 */
@media (max-width: 900px) {.aisitex-feat-hero:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                grid-template-columns: 1fr;
                padding-top: 40px;
            }
.aisitex-grid-split:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)), .aisitex-grid-split.reverse:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                grid-template-columns: 1fr;
                direction: ltr;
                gap: 32px;
            }
.aisitex-nav-menu.active:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                display: flex;
            }
.aisitex-feat-hero h1:not(:where(.aisitex-header, .aisitex-header *, .aisitex-footer, .aisitex-footer *)){
                font-size: 32px;
            }}

.aisitex-header {
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: #0f172a;
}

.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 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(12px);
            border-bottom: 1px solid #e2e8f0;
        }

.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: #121826;
        }

.aisitex-header .aisitex-brand img{
            width: 36px;
            height: 36px;
        }

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

.aisitex-header .aisitex-nav-link{
            font-size: 15px;
            font-weight: 500;
            color: #64748b;
            transition: color 0.2s;
        }

.aisitex-header .aisitex-nav-link:hover, .aisitex-header .aisitex-nav-link.active{
            color: #3a76f0;
        }

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

.aisitex-header .aisitex-menu-toggle span{
            display: block;
            width: 24px;
            height: 2px;
            background: #0f172a;
            margin: 5px 0;
            transition: 0.3s;
        }

@media (max-width: 900px){.aisitex-header .aisitex-nav-menu{
                display: none;
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                background: #fff;
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid #e2e8f0;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            }

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

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

.aisitex-footer {
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: #0f172a;
}

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

.aisitex-footer{
            background: #121826;
            color: #94a3b8;
            padding: 60px 24px 40px;
        }

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

.aisitex-footer .aisitex-footer-top{
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding-bottom: 32px;
        }

.aisitex-footer .aisitex-footer-brand{
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

.aisitex-footer .aisitex-footer-links a{
            color: #94a3b8;
            font-size: 14px;
            transition: color 0.2s;
        }

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

.aisitex-footer .aisitex-footer-bottom{
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 14px;
        }

@media (max-width: 900px){.aisitex-footer .aisitex-footer-top{
                flex-direction: column;
                gap: 20px;
                align-text: center;
            }

.aisitex-footer .aisitex-footer-bottom{
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }}