:root {
            --aisitex-bg: #0B0E14;
            --aisitex-surface: #131822;
            --aisitex-surface-hover: #1A2230;
            --aisitex-border: #212C3D;
            --aisitex-primary: #0052D9;
            --aisitex-primary-hover: #1677FF;
            --aisitex-text: #F0F2F5;
            --aisitex-text-secondary: #94A3B8;
            --aisitex-text-muted: #64748B;
            --aisitex-accent: #00B42A;
            --aisitex-danger: #F53F3F;
            --aisitex-max-width: 1200px;
        }

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

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

        /* 顶部导航栏 */
        .aisitex-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            background-color: rgba(11, 14, 20, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--aisitex-border);
            z-index: 1000;
            display: flex;
            align-items: center;
        }

        .aisitex-header-inner {
            max-width: var(--aisitex-max-width);
            width: 100%;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .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: 36px;
            height: 36px;
            border-radius: 8px;
            object-fit: contain;
        }

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

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

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

        .aisitex-nav-link.active {
            position: relative;
        }

        .aisitex-nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -24px;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--aisitex-primary-hover);
        }

        .aisitex-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 32px;
            height: 32px;
            flex-direction: column;
            justify-content: center;
            gap: 6px;
        }

        .aisitex-menu-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background-color: var(--aisitex-text);
            transition: 0.3s;
        }

        .aisitex-nav-overlay {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            width: 100%;
            height: calc(100vh - 72px);
            background: rgba(0, 0, 0, 0.6);
            z-index: 998;
        }

        /* 首屏区块 */
        .aisitex-hero {
            padding: 140px 24px 80px;
            max-width: var(--aisitex-max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: 48px;
            align-items: center;
        }

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

        .aisitex-status-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 82, 217, 0.15);
            border: 1px solid rgba(0, 82, 217, 0.3);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            color: var(--aisitex-primary-hover);
            width: fit-content;
            font-weight: 600;
        }

        .aisitex-hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.5px;
        }

        .aisitex-hero p {
            font-size: 16px;
            color: var(--aisitex-text-secondary);
            line-height: 1.7;
        }

        .aisitex-platform-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-top: 12px;
        }

        .aisitex-platform-card {
            background-color: var(--aisitex-surface);
            border: 1px solid var(--aisitex-border);
            padding: 16px;
            border-radius: 12px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            transition: all 0.2s;
            text-decoration: none;
            color: inherit;
        }

        .aisitex-platform-card:hover {
            border-color: var(--aisitex-primary);
            background-color: var(--aisitex-surface-hover);
        }

        .aisitex-platform-title {
            font-weight: 600;
            font-size: 15px;
        }

        .aisitex-platform-req {
            font-size: 12px;
            color: var(--aisitex-text-muted);
        }

        .aisitex-platform-action {
            font-size: 13px;
            color: var(--aisitex-primary-hover);
            font-weight: 500;
            margin-top: 4px;
        }

        .aisitex-hero-visual {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--aisitex-border);
            background: var(--aisitex-surface);
        }

        .aisitex-hero-visual img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }

        /* 通用区块样式 */
        .aisitex-section {
            max-width: var(--aisitex-max-width);
            margin: 0 auto;
            padding: 100px 24px;
        }

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

        .aisitex-section-header h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .aisitex-section-header p {
            font-size: 16px;
            color: var(--aisitex-text-secondary);
        }

        /* 左右对照区 (Feature Split Block) */
        .aisitex-split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
            margin-bottom: 96px;
        }

        .aisitex-split-block:nth-child(even) {
            direction: rtl;
        }

        .aisitex-split-block:nth-child(even) > * {
            direction: ltr;
        }

        .aisitex-split-content {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .aisitex-split-content h3 {
            font-size: 26px;
            font-weight: 700;
        }

        .aisitex-split-content p {
            color: var(--aisitex-text-secondary);
            font-size: 16px;
            line-height: 1.7;
        }

        .aisitex-bullet-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 8px;
        }

        .aisitex-bullet-list li {
            position: relative;
            padding-left: 24px;
            color: var(--aisitex-text-secondary);
            font-size: 15px;
        }

        .aisitex-bullet-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 6px;
            height: 6px;
            background-color: var(--aisitex-primary-hover);
            border-radius: 50%;
        }

        .aisitex-split-image {
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--aisitex-border);
            background-color: var(--aisitex-surface);
        }

        .aisitex-split-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 金融工具矩阵网格 */
        .aisitex-tool-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .aisitex-tool-card {
            background-color: var(--aisitex-surface);
            border: 1px solid var(--aisitex-border);
            border-radius: 16px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .aisitex-tool-card-img {
            width: 100%;
            height: 280px;
            overflow: hidden;
            border-bottom: 1px solid var(--aisitex-border);
        }

        .aisitex-tool-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }

        .aisitex-tool-card:hover .aisitex-tool-card-img img {
            transform: scale(1.03);
        }

        .aisitex-tool-card-body {
            padding: 32px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .aisitex-tool-card-body h3 {
            font-size: 20px;
            font-weight: 600;
        }

        .aisitex-tool-card-body p {
            color: var(--aisitex-text-secondary);
            font-size: 15px;
            line-height: 1.6;
        }

        /* 底部引导横幅 */
        .aisitex-cta-banner {
            background: linear-gradient(135deg, rgba(0, 82, 217, 0.2) 0%, rgba(22, 119, 255, 0.05) 100%);
            border: 1px solid rgba(0, 82, 217, 0.3);
            border-radius: 20px;
            padding: 64px 32px;
            text-align: center;
            max-width: var(--aisitex-max-width);
            margin: 0 auto 100px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 24px;
        }

        .aisitex-cta-banner h2 {
            font-size: 32px;
            font-weight: 700;
        }

        .aisitex-cta-banner p {
            color: var(--aisitex-text-secondary);
            font-size: 16px;
            max-width: 600px;
        }

        .aisitex-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: var(--aisitex-primary);
            color: #ffffff;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 8px;
            text-decoration: none;
            transition: background-color 0.2s;
            font-size: 16px;
        }

        .aisitex-btn:hover {
            background-color: var(--aisitex-primary-hover);
        }

        /* 页脚 */
        .aisitex-footer {
            border-top: 1px solid var(--aisitex-border);
            padding: 64px 24px 32px;
            background-color: var(--aisitex-surface);
        }

        .aisitex-footer-inner {
            max-width: var(--aisitex-max-width);
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 40px;
        }

        .aisitex-footer-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }

        .aisitex-footer-nav a {
            color: var(--aisitex-text-secondary);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;
        }

        .aisitex-footer-nav a:hover {
            color: var(--aisitex-text);
        }

        .aisitex-footer-copy {
            color: var(--aisitex-text-muted);
            font-size: 13px;
            border-top: 1px solid var(--aisitex-border);
            padding-top: 24px;
        }

        /* 响应式媒体查询 */
        @media (max-width: 960px) {
            .aisitex-hero {
                grid-template-columns: 1fr;
                padding-top: 100px;
                gap: 36px;
            }

            .aisitex-split-block,
            .aisitex-split-block:nth-child(even) {
                grid-template-columns: 1fr;
                direction: ltr;
                gap: 32px;
            }

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

            .aisitex-nav {
                display: none;
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                background-color: var(--aisitex-surface);
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid var(--aisitex-border);
                gap: 16px;
                align-items: flex-start;
            }

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

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

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

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

.aisitex-header {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #F0F2F5;
}

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

.aisitex-header{
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            background-color: rgba(11, 14, 20, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid #212C3D;
            z-index: 1000;
            display: flex;
            align-items: center;
        }

.aisitex-header .aisitex-header-inner{
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

.aisitex-header .aisitex-brand{
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: #F0F2F5;
            font-weight: 700;
            font-size: 20px;
        }

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

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

.aisitex-header .aisitex-nav-link{
            text-decoration: none;
            color: #94A3B8;
            font-size: 15px;
            font-weight: 500;
            transition: color 0.2s;
        }

.aisitex-header .aisitex-nav-link:hover, .aisitex-header .aisitex-nav-link.active{
            color: #F0F2F5;
        }

.aisitex-header .aisitex-nav-link.active{
            position: relative;
        }

.aisitex-header .aisitex-nav-link.active::after{
            content: '';
            position: absolute;
            bottom: -24px;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #1677FF;
        }

.aisitex-header .aisitex-menu-toggle{
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 32px;
            height: 32px;
            flex-direction: column;
            justify-content: center;
            gap: 6px;
        }

.aisitex-header .aisitex-menu-toggle span{
            display: block;
            width: 100%;
            height: 2px;
            background-color: #F0F2F5;
            transition: 0.3s;
        }

@media (max-width: 960px){.aisitex-header .aisitex-nav{
                display: none;
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                background-color: #131822;
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid #212C3D;
                gap: 16px;
                align-items: flex-start;
            }

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

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

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

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

.aisitex-footer {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #F0F2F5;
}

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

.aisitex-footer{
            border-top: 1px solid #212C3D;
            padding: 64px 24px 32px;
            background-color: #131822;
        }

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

.aisitex-footer .aisitex-footer-nav{
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }

.aisitex-footer .aisitex-footer-nav a{
            color: #94A3B8;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;
        }

.aisitex-footer .aisitex-footer-nav a:hover{
            color: #F0F2F5;
        }

.aisitex-footer .aisitex-footer-copy{
            color: #64748B;
            font-size: 13px;
            border-top: 1px solid #212C3D;
            padding-top: 24px;
        }