:root {
            --aisitex-primary: #2AABEE;
            --aisitex-primary-dark: #229ED9;
            --aisitex-bg: #F8FAFC;
            --aisitex-surface: #FFFFFF;
            --aisitex-text: #0F172A;
            --aisitex-text-muted: #64748B;
            --aisitex-border: #E2E8F0;
            --aisitex-radius: 12px;
            --aisitex-shadow: 0 10px 25px -5px rgba(42, 171, 238, 0.1), 0 8px 10px -6px rgba(42, 171, 238, 0.1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--aisitex-bg);
            color: var(--aisitex-text);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        /* 顶部品牌信息条 */
        .aisitex-top-bar {
            background: linear-gradient(90deg, var(--aisitex-primary), var(--aisitex-primary-dark));
            color: #ffffff;
            text-align: center;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
        }

        /* 导航栏 */
        .aisitex-header {
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            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;
            font-weight: 700;
            font-size: 20px;
            color: var(--aisitex-text);
        }

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

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

        .aisitex-nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--aisitex-text-muted);
            transition: color 0.2s;
            position: relative;
            padding: 6px 0;
        }

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

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

        .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;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.4);
            z-index: 998;
        }

        /* 英雄区 (Hero Section) */
        .aisitex-hero {
            max-width: 1200px;
            margin: 0 auto;
            padding: 80px 24px 60px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .aisitex-hero-content {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }

        .aisitex-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: #E0F2FE;
            color: #0284C7;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 24px;
        }

        .aisitex-hero-title {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--aisitex-text);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .aisitex-hero-summary {
            font-size: 18px;
            color: var(--aisitex-text-muted);
            line-height: 1.6;
            margin-bottom: 36px;
        }

        .aisitex-hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

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

        .aisitex-btn-primary {
            background-color: var(--aisitex-primary);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(42, 171, 238, 0.4);
        }

        .aisitex-btn-primary:hover {
            background-color: var(--aisitex-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(42, 171, 238, 0.5);
        }

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

        .aisitex-btn-secondary:hover {
            border-color: var(--aisitex-primary);
            color: var(--aisitex-primary);
            background-color: #F0F9FF;
        }

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

        .aisitex-hero-img {
            width: 100%;
            height: auto;
            border-radius: 20px;
            box-shadow: var(--aisitex-shadow);
            background-color: #ffffff;
        }

        /* 全宽色带切换区块 (Feature Split) */
        .aisitex-feature-section {
            background: linear-gradient(180deg, #FFFFFF 0%, #F1F5F9 100%);
            padding: 100px 0;
            border-top: 1px solid var(--aisitex-border);
            border-bottom: 1px solid var(--aisitex-border);
        }

        .aisitex-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

        .aisitex-section-title {
            font-size: 34px;
            font-weight: 700;
            color: var(--aisitex-text);
            margin-bottom: 16px;
        }

        .aisitex-section-summary {
            font-size: 17px;
            color: var(--aisitex-text-muted);
            line-height: 1.6;
        }

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

        .aisitex-feature-image-wrap {
            position: relative;
        }

        .aisitex-feature-img {
            width: 100%;
            height: auto;
            border-radius: var(--aisitex-radius);
            box-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.12);
        }

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

        .aisitex-feature-item {
            background-color: var(--aisitex-surface);
            padding: 28px;
            border-radius: var(--aisitex-radius);
            border: 1px solid var(--aisitex-border);
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .aisitex-feature-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px -10px rgba(42, 171, 238, 0.15);
            border-color: rgba(42, 171, 238, 0.4);
        }

        .aisitex-feature-item-title {
            font-size: 20px;
            font-weight: 600;
            color: var(--aisitex-text);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .aisitex-feature-item-title::before {
            content: '';
            width: 8px;
            height: 8px;
            background-color: var(--aisitex-primary);
            border-radius: 50%;
        }

        .aisitex-feature-item-desc {
            font-size: 15px;
            color: var(--aisitex-text-muted);
            line-height: 1.6;
        }

        /* 引导与路径区块 (Navigation Guide Section) */
        .aisitex-path-section {
            padding: 100px 0;
            background-color: var(--aisitex-bg);
        }

        .aisitex-path-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .aisitex-path-card {
            background-color: var(--aisitex-surface);
            border: 1px solid var(--aisitex-border);
            border-radius: var(--aisitex-radius);
            padding: 36px 30px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: all 0.3s;
        }

        .aisitex-path-card:hover {
            border-color: var(--aisitex-primary);
            box-shadow: var(--aisitex-shadow);
            transform: translateY(-5px);
        }

        .aisitex-path-card-title {
            font-size: 22px;
            font-weight: 600;
            color: var(--aisitex-text);
            margin-bottom: 14px;
        }

        .aisitex-path-card-summary {
            font-size: 15px;
            color: var(--aisitex-text-muted);
            line-height: 1.6;
            margin-bottom: 24px;
        }

        .aisitex-path-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--aisitex-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .aisitex-path-link:hover {
            color: var(--aisitex-primary-dark);
            gap: 10px;
        }

        /* 行动横幅 (Action Banner) */
        .aisitex-banner-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
            color: #ffffff;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .aisitex-banner-content {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 2;
        }

        .aisitex-banner-title {
            font-size: 38px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .aisitex-banner-summary {
            font-size: 18px;
            color: #94A3B8;
            margin-bottom: 36px;
            line-height: 1.6;
        }

        /* 页脚 */
        .aisitex-footer {
            background-color: #0B0F19;
            color: #94A3B8;
            padding: 60px 0 30px;
            border-top: 1px solid #1E293B;
        }

        .aisitex-footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid #1E293B;
            padding-bottom: 40px;
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .aisitex-footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #ffffff;
            font-weight: 700;
            font-size: 18px;
        }

        .aisitex-footer-links {
            display: flex;
            gap: 28px;
        }

        .aisitex-footer-links a {
            color: #94A3B8;
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .aisitex-copyright {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            text-align: center;
            font-size: 14px;
            color: #64748B;
        }

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

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

            .aisitex-hero-title {
                font-size: 34px;
            }

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

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

            .aisitex-nav-menu {
                position: fixed;
                top: 72px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 72px);
                background-color: var(--aisitex-surface);
                flex-direction: column;
                justify-content: flex-start;
                padding-top: 40px;
                gap: 24px;
                transition: left 0.3s ease;
                box-shadow: 0 20px 20px rgba(0,0,0,0.05);
            }

            .aisitex-nav-menu.active {
                left: 0;
            }

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

            .aisitex-menu-toggle.active span:nth-child(1) {
                transform: translateY(7px) rotate(45deg);
            }

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

            .aisitex-menu-toggle.active span:nth-child(3) {
                transform: translateY(-7px) rotate(-45deg);
            }

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

.aisitex-header {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", 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{
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            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: #0F172A;
        }

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

.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;
            position: relative;
            padding: 6px 0;
        }

.aisitex-header .aisitex-nav-link:hover, .aisitex-header .aisitex-nav-link.active{
            color: #2AABEE;
        }

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

.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: #0F172A;
            margin: 5px 0;
            transition: 0.3s;
        }

@media (max-width: 968px){.aisitex-header .aisitex-nav-menu{
                position: fixed;
                top: 72px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 72px);
                background-color: #FFFFFF;
                flex-direction: column;
                justify-content: flex-start;
                padding-top: 40px;
                gap: 24px;
                transition: left 0.3s ease;
                box-shadow: 0 20px 20px rgba(0,0,0,0.05);
            }

.aisitex-header .aisitex-nav-menu.active{
                left: 0;
            }

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

.aisitex-header .aisitex-menu-toggle.active span:nth-child(1){
                transform: translateY(7px) 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(-7px) rotate(-45deg);
            }

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

.aisitex-footer {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", 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 .aisitex-brand-logo{
            width: 36px;
            height: 36px;
            object-fit: contain;
        }

.aisitex-footer{
            background-color: #0B0F19;
            color: #94A3B8;
            padding: 60px 0 30px;
            border-top: 1px solid #1E293B;
        }

.aisitex-footer .aisitex-footer-container{
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid #1E293B;
            padding-bottom: 40px;
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 20px;
        }

.aisitex-footer .aisitex-footer-brand{
            display: flex;
            align-items: center;
            gap: 12px;
            color: #ffffff;
            font-weight: 700;
            font-size: 18px;
        }

.aisitex-footer .aisitex-footer-links{
            display: flex;
            gap: 28px;
        }

.aisitex-footer .aisitex-footer-links a{
            color: #94A3B8;
            font-size: 14px;
            transition: color 0.2s;
        }

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

.aisitex-footer .aisitex-copyright{
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            text-align: center;
            font-size: 14px;
            color: #64748B;
        }