:root {
            --aisitex-bg: #0f172a;
            --aisitex-surface: #1e293b;
            --aisitex-surface-hover: #334155;
            --aisitex-primary: #2962ff;
            --aisitex-primary-hover: #1e4bd8;
            --aisitex-secondary: #00838f;
            --aisitex-text: #f8fafc;
            --aisitex-text-muted: #94a3b8;
            --aisitex-border: rgba(255, 255, 255, 0.08);
            --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;
        }

        body.nav-scroll-locked {
            overflow: hidden;
        }

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

        /* 导航栏样式 */
        .aisitex-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 23, 42, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--aisitex-border);
        }

        .aisitex-nav-container {
            max-width: var(--aisitex-max-width);
            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;
            letter-spacing: -0.5px;
        }

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

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

        .aisitex-nav-link {
            font-size: 15px;
            color: var(--aisitex-text-muted);
            transition: color 0.2s ease;
            position: relative;
            padding: 8px 0;
        }

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

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

        .aisitex-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 32px;
            height: 32px;
            position: relative;
            z-index: 1001;
        }

        .aisitex-menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--aisitex-text);
            position: absolute;
            left: 4px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .aisitex-menu-toggle span:nth-child(1) { top: 8px; }
        .aisitex-menu-toggle span:nth-child(2) { top: 15px; }
        .aisitex-menu-toggle span:nth-child(3) { top: 22px; }

        .aisitex-menu-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .aisitex-menu-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .aisitex-menu-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* 移动端菜单 */
        @media (max-width: 768px) {
            .aisitex-menu-toggle {
                display: block;
            }
            .aisitex-nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--aisitex-surface);
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
                gap: 16px;
                border-bottom: 1px solid var(--aisitex-border);
                transform: translateY(-120%);
                transition: transform 0.3s ease;
                visibility: hidden;
            }
            .aisitex-nav-links.is-open {
                transform: translateY(0);
                visibility: visible;
            }
            .aisitex-nav-link {
                width: 100%;
                padding: 12px 0;
                border-bottom: 1px solid rgba(255,255,255,0.05);
            }
            .aisitex-nav-link.active::after {
                display: none;
            }
        }

        /* 页面主体公用布局 */
        .aisitex-container {
            max-width: var(--aisitex-max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 首屏 Hero Split */
        .aisitex-hero {
            padding: 80px 0 60px;
            position: relative;
        }

        .aisitex-hero-grid {
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: 48px;
            align-items: center;
        }

        .aisitex-hero-content h1 {
            font-size: 44px;
            line-height: 1.2;
            font-weight: 700;
            letter-spacing: -1px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #f8fafc 0%, #94a3b8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .aisitex-hero-content p {
            font-size: 18px;
            color: var(--aisitex-text-muted);
            margin-bottom: 36px;
            line-height: 1.7;
        }

        .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: 8px;
            font-weight: 600;
            font-size: 15px;
            transition: all 0.2s ease;
            cursor: pointer;
            border: none;
        }

        .aisitex-btn-primary {
            background-color: var(--aisitex-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(41, 98, 255, 0.35);
        }

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

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

        .aisitex-btn-secondary:hover {
            background-color: var(--aisitex-surface-hover);
            border-color: rgba(255,255,255,0.2);
        }

        .aisitex-hero-media {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--aisitex-border);
            background: var(--aisitex-surface);
            box-shadow: 0 20px 40px rgba(0,0,0,0.4);
        }

        .aisitex-hero-media img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 章节通用样式 */
        .aisitex-section {
            padding: 100px 0;
            border-top: 1px solid var(--aisitex-border);
        }

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

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

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

        /* 01 场景识别 (Scenario Grid) */
        .aisitex-scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .aisitex-scenario-cards {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .aisitex-scenario-card {
            background: var(--aisitex-surface);
            border: 1px solid var(--aisitex-border);
            padding: 28px;
            border-radius: 12px;
            transition: border-color 0.2s ease;
        }

        .aisitex-scenario-card:hover {
            border-color: rgba(41, 98, 255, 0.4);
        }

        .aisitex-step-tag {
            font-size: 13px;
            font-weight: 600;
            color: var(--aisitex-primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
            display: block;
        }

        .aisitex-scenario-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
        }

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

        .aisitex-media-box {
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--aisitex-border);
            background: var(--aisitex-surface);
            box-shadow: 0 16px 32px rgba(0,0,0,0.3);
        }

        .aisitex-media-box img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 02 核心能力 (Feature Highlight) */
        .aisitex-feature-layout {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }

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

        .aisitex-feature-item h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .aisitex-feature-item h3::before {
            content: '';
            width: 8px;
            height: 8px;
            background-color: var(--aisitex-primary);
            border-radius: 50%;
        }

        .aisitex-feature-item p {
            color: var(--aisitex-text-muted);
            font-size: 16px;
            line-height: 1.7;
            padding-left: 20px;
        }

        /* 03 效能对照 (Comparison Section) */
        .aisitex-comparison-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

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

        .aisitex-comp-row {
            display: grid;
            grid-template-columns: 100px 1fr 1fr;
            border-bottom: 1px solid var(--aisitex-border);
        }

        .aisitex-comp-row:last-child {
            border-bottom: none;
        }

        .aisitex-comp-header {
            background: rgba(255,255,255,0.02);
            font-weight: 600;
            color: var(--aisitex-text-muted);
            font-size: 14px;
        }

        .aisitex-comp-cell {
            padding: 20px;
            font-size: 15px;
            display: flex;
            align-items: center;
        }

        .aisitex-comp-cell.aspect {
            font-weight: 600;
            color: var(--aisitex-text);
            border-right: 1px solid var(--aisitex-border);
        }

        .aisitex-comp-cell.traditional {
            color: var(--aisitex-text-muted);
            border-right: 1px solid var(--aisitex-border);
            background: rgba(239, 68, 68, 0.03);
        }

        .aisitex-comp-cell.tradingview {
            color: #34d399;
            background: rgba(52, 211, 153, 0.05);
            font-weight: 500;
        }

        /* CTA Footer */
        .aisitex-cta-footer {
            padding: 100px 0;
            background: linear-gradient(180deg, var(--aisitex-bg) 0%, var(--aisitex-surface) 100%);
            border-top: 1px solid var(--aisitex-border);
            text-align: center;
        }

        .aisitex-cta-box {
            max-width: 700px;
            margin: 0 auto;
        }

        .aisitex-cta-box h2 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

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

        .aisitex-cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

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

        /* 响应式断点调整 */
        @media (max-width: 968px) {
            .aisitex-hero-grid,
            .aisitex-scenario-grid,
            .aisitex-feature-layout,
            .aisitex-comparison-wrapper {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .aisitex-hero-content h1 {
                font-size: 36px;
            }
            .aisitex-comp-row {
                grid-template-columns: 80px 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            .aisitex-comp-row {
                grid-template-columns: 1fr;
            }
            .aisitex-comp-cell.aspect {
                border-right: none;
                border-bottom: 1px solid var(--aisitex-border);
                background: rgba(255,255,255,0.04);
            }
            .aisitex-comp-cell.traditional {
                border-right: none;
                border-bottom: 1px solid var(--aisitex-border);
            }
        }

.aisitex-header {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #f8fafc;
}

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

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

.aisitex-header{
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 23, 42, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

.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;
            letter-spacing: -0.5px;
        }

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

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

.aisitex-header .aisitex-nav-link{
            font-size: 15px;
            color: #94a3b8;
            transition: color 0.2s ease;
            position: relative;
            padding: 8px 0;
        }

.aisitex-header .aisitex-nav-link:hover, .aisitex-header .aisitex-nav-link.active{
            color: #f8fafc;
        }

.aisitex-header .aisitex-nav-link.active::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background-color: #2962ff;
            border-radius: 2px;
        }

.aisitex-header .aisitex-menu-toggle{
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 32px;
            height: 32px;
            position: relative;
            z-index: 1001;
        }

.aisitex-header .aisitex-menu-toggle span{
            display: block;
            width: 24px;
            height: 2px;
            background-color: #f8fafc;
            position: absolute;
            left: 4px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

.aisitex-header .aisitex-menu-toggle span:nth-child(1){ top: 8px; }

.aisitex-header .aisitex-menu-toggle span:nth-child(2){ top: 15px; }

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

.aisitex-header .aisitex-menu-toggle[aria-expanded="true"] span:nth-child(1){
            transform: translateY(7px) rotate(45deg);
        }

.aisitex-header .aisitex-menu-toggle[aria-expanded="true"] span:nth-child(2){
            opacity: 0;
        }

.aisitex-header .aisitex-menu-toggle[aria-expanded="true"] span:nth-child(3){
            transform: translateY(-7px) rotate(-45deg);
        }

@media (max-width: 768px){.aisitex-header .aisitex-menu-toggle{
                display: block;
            }

.aisitex-header .aisitex-nav-links{
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: #1e293b;
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
                gap: 16px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                transform: translateY(-120%);
                transition: transform 0.3s ease;
                visibility: hidden;
            }

.aisitex-header .aisitex-nav-links.is-open{
                transform: translateY(0);
                visibility: visible;
            }

.aisitex-header .aisitex-nav-link{
                width: 100%;
                padding: 12px 0;
                border-bottom: 1px solid rgba(255,255,255,0.05);
            }

.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: #f8fafc;
}

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

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

.aisitex-footer{
            padding: 40px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            color: #94a3b8;
            font-size: 14px;
        }