:root {
            --aisitex-primary: #1a73e8;
            --aisitex-secondary: #34a853;
            --aisitex-bg: #f8f9fa;
            --aisitex-text: #202124;
            --aisitex-text-light: #5f6368;
            --aisitex-border: #dadce0;
            --aisitex-white: #ffffff;
            --aisitex-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
        }

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

        body {
            font-family: var(--aisitex-font);
            background-color: var(--aisitex-bg);
            color: var(--aisitex-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        /* 顶部导航栏 */
        .aisitex-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            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;
            text-decoration: none;
            color: var(--aisitex-text);
            font-weight: 700;
            font-size: 20px;
        }

        .aisitex-brand img {
            width: 32px;
            height: 32px;
            object-fit: contain;
        }

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

        .aisitex-nav-link {
            text-decoration: none;
            color: var(--aisitex-text-light);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.2s ease;
            position: relative;
        }

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

        .aisitex-nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -24px;
            left: 0;
            right: 0;
            height: 3px;
            background-color: var(--aisitex-primary);
        }

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

        .aisitex-menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--aisitex-text);
            margin: 5px 0;
            transition: 0.3s;
        }

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

        /* 首屏区域 */
        .aisitex-hero {
            max-width: 1200px;
            margin: 0 auto;
            padding: 80px 24px 60px;
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: 60px;
            align-items: center;
        }

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

        .aisitex-hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #e8f0fe;
            color: var(--aisitex-primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            width: fit-content;
        }

        .aisitex-hero-title {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--aisitex-text);
            letter-spacing: -0.5px;
        }

        .aisitex-hero-subtitle {
            font-size: 18px;
            color: var(--aisitex-text-light);
            line-height: 1.6;
        }

        .aisitex-hero-actions {
            display: flex;
            gap: 16px;
            margin-top: 12px;
        }

        .aisitex-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 16px;
            text-decoration: none;
            transition: all 0.2s ease;
            cursor: pointer;
            border: none;
        }

        .aisitex-btn-primary {
            background-color: var(--aisitex-primary);
            color: var(--aisitex-white);
            box-shadow: 0 4px 12px rgba(26, 115, 232, 0.3);
        }

        .aisitex-btn-primary:hover {
            background-color: #1557b0;
            transform: translateY(-2px);
        }

        .aisitex-btn-secondary {
            background-color: var(--aisitex-white);
            color: var(--aisitex-text);
            border: 1px solid var(--aisitex-border);
        }

        .aisitex-btn-secondary:hover {
            background-color: #f1f3f4;
        }

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

        .aisitex-hero-image img {
            width: 100%;
            height: auto;
            border-radius: 16px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            border: 1px solid var(--aisitex-border);
            display: block;
        }

        /* 信息横带 */
        .aisitex-infobar {
            background-color: var(--aisitex-white);
            border-top: 1px solid var(--aisitex-border);
            border-bottom: 1px solid var(--aisitex-border);
            padding: 32px 0;
            margin-bottom: 80px;
        }

        .aisitex-infobar-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .aisitex-info-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .aisitex-info-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--aisitex-primary);
            line-height: 1;
        }

        .aisitex-info-content h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--aisitex-text);
        }

        .aisitex-info-content p {
            font-size: 14px;
            color: var(--aisitex-text-light);
        }

        /* 杂志式章节区块 */
        .aisitex-section {
            max-width: 1200px;
            margin: 0 auto 100px;
            padding: 0 24px;
        }

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

        .aisitex-section-tag {
            font-size: 13px;
            font-weight: 600;
            color: var(--aisitex-secondary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
            display: block;
        }

        .aisitex-section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--aisitex-text);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .aisitex-section-desc {
            font-size: 16px;
            color: var(--aisitex-text-light);
            line-height: 1.6;
        }

        .aisitex-feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

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

        .aisitex-step-card {
            display: flex;
            gap: 20px;
            background: var(--aisitex-white);
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--aisitex-border);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .aisitex-step-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
        }

        .aisitex-step-num {
            font-size: 20px;
            font-weight: 700;
            color: var(--aisitex-primary);
            background: #e8f0fe;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .aisitex-step-text h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--aisitex-text);
        }

        .aisitex-step-text p {
            font-size: 14px;
            color: var(--aisitex-text-light);
            line-height: 1.5;
        }

        .aisitex-feature-image img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            box-shadow: 0 15px 35px rgba(0,0,0,0.08);
            border: 1px solid var(--aisitex-border);
        }

        /* 子页导览矩阵 */
        .aisitex-nav-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .aisitex-nav-card {
            background: var(--aisitex-white);
            padding: 32px;
            border-radius: 12px;
            border: 1px solid var(--aisitex-border);
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
            gap: 12px;
            transition: all 0.2s ease;
        }

        .aisitex-nav-card:hover {
            border-color: var(--aisitex-primary);
            box-shadow: 0 10px 25px rgba(26, 115, 232, 0.08);
            transform: translateY(-2px);
        }

        .aisitex-nav-card h4 {
            font-size: 20px;
            font-weight: 600;
            color: var(--aisitex-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .aisitex-nav-card h4::after {
            content: '→';
            color: var(--aisitex-primary);
            font-weight: 400;
        }

        .aisitex-nav-card p {
            font-size: 14px;
            color: var(--aisitex-text-light);
            line-height: 1.6;
        }

        /* 底部行动条 */
        .aisitex-cta-banner {
            background: linear-gradient(135deg, #1a73e8 0%, #1557b0 100%);
            color: var(--aisitex-white);
            padding: 80px 24px;
            text-align: center;
            margin-top: 120px;
        }

        .aisitex-cta-container {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 24px;
        }

        .aisitex-cta-banner h2 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
        }

        .aisitex-cta-banner p {
            font-size: 18px;
            opacity: 0.9;
            max-width: 600px;
            line-height: 1.6;
        }

        .aisitex-btn-white {
            background-color: var(--aisitex-white);
            color: var(--aisitex-primary);
            font-weight: 600;
            padding: 16px 36px;
            border-radius: 8px;
            font-size: 16px;
            text-decoration: none;
            box-shadow: 0 6px 20px rgba(0,0,0,0.15);
            transition: transform 0.2s ease;
        }

        .aisitex-btn-white:hover {
            transform: translateY(-2px);
        }

        /* 页脚 */
        .aisitex-footer {
            background-color: var(--aisitex-white);
            border-top: 1px solid var(--aisitex-border);
            padding: 40px 0;
            text-align: center;
            font-size: 14px;
            color: var(--aisitex-text-light);
        }

        .aisitex-footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
            align-items: center;
        }

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

        .aisitex-footer-links a {
            color: var(--aisitex-text-light);
            text-decoration: none;
        }

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

        /* 响应式适配 */
        @media (max-width: 968px) {
            .aisitex-hero {
                grid-template-columns: 1fr;
                gap: 40px;
                padding: 40px 24px;
            }

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

            .aisitex-infobar-container {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

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

            .aisitex-nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--aisitex-white);
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid var(--aisitex-border);
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                transform: translateY(-150%);
                transition: transform 0.3s ease;
                z-index: 999;
            }

            .aisitex-nav-menu.active {
                transform: translateY(0);
            }

            .aisitex-nav-link.active::after {
                display: none;
            }

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

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

.aisitex-header {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #202124;
}

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

.aisitex-header{
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid #dadce0;
        }

.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;
            text-decoration: none;
            color: #202124;
            font-weight: 700;
            font-size: 20px;
        }

.aisitex-header .aisitex-brand img{
            width: 32px;
            height: 32px;
            object-fit: contain;
        }

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

.aisitex-header .aisitex-nav-link{
            text-decoration: none;
            color: #5f6368;
            font-weight: 500;
            font-size: 15px;
            transition: color 0.2s ease;
            position: relative;
        }

.aisitex-header .aisitex-nav-link:hover, .aisitex-header .aisitex-nav-link.active{
            color: #1a73e8;
        }

.aisitex-header .aisitex-nav-link.active::after{
            content: '';
            position: absolute;
            bottom: -24px;
            left: 0;
            right: 0;
            height: 3px;
            background-color: #1a73e8;
        }

.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-color: #202124;
            margin: 5px 0;
            transition: 0.3s;
        }

@media (max-width: 968px){.aisitex-header .aisitex-nav-menu{
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid #dadce0;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                transform: translateY(-150%);
                transition: transform 0.3s ease;
                z-index: 999;
            }

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

.aisitex-header .aisitex-nav-link.active::after{
                display: none;
            }

.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, Arial, sans-serif;
    line-height: 1.6;
    color: #202124;
}

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

.aisitex-footer{
            background-color: #ffffff;
            border-top: 1px solid #dadce0;
            padding: 40px 0;
            text-align: center;
            font-size: 14px;
            color: #5f6368;
        }

.aisitex-footer .aisitex-footer-container{
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
            align-items: center;
        }

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

.aisitex-footer .aisitex-footer-links a{
            color: #5f6368;
            text-decoration: none;
        }

.aisitex-footer .aisitex-footer-links a:hover{
            color: #1a73e8;
        }