:root {
            --primary-color: #0052D9;
            --primary-hover: #0040B0;
            --secondary-color: #10B981;
            --bg-color: #F8FAFC;
            --surface-color: #FFFFFF;
            --text-color: #1E293B;
            --text-light: #64748B;
            --border-color: #E2E8F0;
            --max-width: 1280px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft JhengHei", Inter, sans-serif;
            background-color: var(--bg-color);
            color: var(--text-color);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        ul {
            list-style: none;
        }

        /* 頂部導航 */
        .aisitex-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            height: 72px;
            display: flex;
            align-items: center;
        }

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

        .aisitex-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--primary-color);
        }

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

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

        .aisitex-nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-color);
            transition: var(--transition);
            position: relative;
            padding: 8px 0;
        }

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

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

        .aisitex-header-cta {
            background-color: var(--primary-color);
            color: #fff;
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .aisitex-header-cta:hover {
            background-color: var(--primary-hover);
            transform: translateY(-1px);
        }

        .aisitex-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 30px;
            height: 24px;
            position: relative;
        }

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

        .aisitex-menu-toggle span:nth-child(1) { top: 0; }
        .aisitex-menu-toggle span:nth-child(2) { top: 11px; }
        .aisitex-menu-toggle span:nth-child(3) { bottom: 0; }

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

        /* 首屏 Hero */
        .aisitex-hero {
            max-width: var(--max-width);
            margin: 40px auto 60px;
            padding: 0 24px;
            text-align: center;
        }

        .aisitex-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 82, 217, 0.08);
            color: var(--primary-color);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .aisitex-hero h1 {
            font-size: clamp(2.2rem, 4vw, 3.5rem);
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-color);
            max-width: 900px;
            margin: 0 auto 20px;
            letter-spacing: -0.02em;
        }

        .aisitex-hero p {
            font-size: 1.15rem;
            color: var(--text-light);
            max-width: 700px;
            margin: 0 auto 36px;
        }

        .aisitex-hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 50px;
            flex-wrap: wrap;
        }

        .aisitex-btn-primary {
            background-color: var(--primary-color);
            color: #fff;
            padding: 14px 32px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(0, 82, 217, 0.3);
        }

        .aisitex-btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 82, 217, 0.4);
        }

        .aisitex-btn-secondary {
            background-color: var(--surface-color);
            color: var(--text-color);
            border: 1px solid var(--border-color);
            padding: 14px 32px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }

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

        .aisitex-hero-media {
            width: 100%;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            border: 1px solid var(--border-color);
            background: #000;
        }

        .aisitex-hero-media img {
            width: 100%;
            height: auto;
            display: block;
            max-height: 560px;
            object-fit: cover;
        }

        /* 區塊通用樣式 */
        .aisitex-section {
            padding: 80px 0;
        }

        .aisitex-section-alt {
            background-color: #FFFFFF;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

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

        .aisitex-section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px;
        }

        .aisitex-section-header h2 {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .aisitex-section-header p {
            font-size: 1.05rem;
            color: var(--text-light);
        }

        /* 任務情境區塊 (Scenario Task) */
        .aisitex-scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-bottom: 60px;
        }

        .aisitex-scenario-grid:nth-child(even) {
            direction: rtl;
        }

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

        .aisitex-scenario-content h3 {
            font-size: 1.6rem;
            margin-bottom: 16px;
            color: var(--text-color);
        }

        .aisitex-scenario-content p {
            font-size: 1.05rem;
            color: var(--text-light);
            margin-bottom: 24px;
        }

        .aisitex-scenario-tags {
            display: inline-block;
            background: rgba(16, 185, 129, 0.1);
            color: var(--secondary-color);
            padding: 6px 14px;
            border-radius: 6px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        .aisitex-scenario-media {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 12px 30px rgba(0,0,0,0.06);
            border: 1px solid var(--border-color);
        }

        .aisitex-scenario-media img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
            max-height: 400px;
        }

        /* 特性網格 (Feature Grid) */
        .aisitex-feature-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .aisitex-feature-card {
            background: var(--bg-color);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .aisitex-feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.06);
            border-color: var(--primary-color);
        }

        .aisitex-feature-img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        .aisitex-feature-body {
            padding: 32px;
        }

        .aisitex-feature-body h3 {
            font-size: 1.35rem;
            margin-bottom: 12px;
        }

        .aisitex-feature-body p {
            color: var(--text-light);
            font-size: 1rem;
        }

        /* 品牌證明 (Brand Evidence) */
        .aisitex-evidence-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

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

        .aisitex-evidence-item {
            display: flex;
            gap: 20px;
        }

        .aisitex-evidence-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: rgba(0, 82, 217, 0.1);
            color: var(--primary-color);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
        }

        .aisitex-evidence-text h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

        .aisitex-evidence-text p {
            color: var(--text-light);
            font-size: 0.95rem;
        }

        .aisitex-evidence-media {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 16px 40px rgba(0,0,0,0.08);
            border: 1px solid var(--border-color);
        }

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

        /* 底部 CTA 橫幅 */
        .aisitex-cta-banner {
            background: linear-gradient(135deg, #0052D9 0%, #1E40AF 100%);
            color: #fff;
            padding: 80px 0;
            text-align: center;
        }

        .aisitex-cta-banner h2 {
            font-size: clamp(2rem, 3vw, 2.8rem);
            margin-bottom: 16px;
            font-weight: 700;
        }

        .aisitex-cta-banner p {
            font-size: 1.15rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto 36px;
        }

        .aisitex-btn-white {
            background-color: #fff;
            color: var(--primary-color);
            padding: 16px 36px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: inline-block;
        }

        .aisitex-btn-white:hover {
            background-color: #F1F5F9;
            transform: translateY(-2px);
        }

        /* 頁腳 */
        .aisitex-footer {
            background-color: #0F172A;
            color: #94A3B8;
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }

        .aisitex-footer-grid {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .aisitex-footer-brand p {
            margin-top: 16px;
            color: #94A3B8;
            max-width: 320px;
        }

        .aisitex-footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .aisitex-footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .aisitex-footer-col a {
            color: #94A3B8;
            transition: var(--transition);
        }

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

        .aisitex-footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 24px 24px 0;
            border-top: 1px solid #1E293B;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* 響應式調整 */
        @media (max-width: 968px) {
            .aisitex-nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                background: var(--surface-color);
                flex-direction: column;
                padding: 32px;
                gap: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                transform: translateY(-150%);
                transition: var(--transition);
                border-bottom: 1px solid var(--border-color);
                z-index: 999;
            }

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

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

            .aisitex-header-cta {
                display: none;
            }

            .aisitex-scenario-grid,
            .aisitex-evidence-layout,
            .aisitex-feature-grid,
            .aisitex-footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .aisitex-scenario-grid:nth-child(even) {
                direction: ltr;
            }
        }

.aisitex-header {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft JhengHei", Inter, sans-serif;
    line-height: 1.6;
    color: #1E293B;
}

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

.aisitex-header{
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid #E2E8F0;
            height: 72px;
            display: flex;
            align-items: center;
        }

.aisitex-header .aisitex-nav-container{
            max-width: 1280px;
            margin: 0 auto;
            width: 100%;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

.aisitex-header .aisitex-brand{
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.2rem;
            color: #0052D9;
        }

.aisitex-header .aisitex-brand img{
            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: 0.95rem;
            font-weight: 500;
            color: #1E293B;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            padding: 8px 0;
        }

.aisitex-header .aisitex-nav-link:hover, .aisitex-header .aisitex-nav-link.active{
            color: #0052D9;
        }

.aisitex-header .aisitex-nav-link.active::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #0052D9;
            border-radius: 2px;
        }

.aisitex-header .aisitex-header-cta{
            background-color: #0052D9;
            color: #fff;
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

.aisitex-header .aisitex-header-cta:hover{
            background-color: #0040B0;
            transform: translateY(-1px);
        }

.aisitex-header .aisitex-menu-toggle{
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 30px;
            height: 24px;
            position: relative;
        }

.aisitex-header .aisitex-menu-toggle span{
            display: block;
            position: absolute;
            height: 2px;
            width: 100%;
            background: #1E293B;
            border-radius: 2px;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

.aisitex-header .aisitex-menu-toggle span:nth-child(1){ top: 0; }

.aisitex-header .aisitex-menu-toggle span:nth-child(2){ top: 11px; }

.aisitex-header .aisitex-menu-toggle span:nth-child(3){ bottom: 0; }

@media (max-width: 968px){.aisitex-header .aisitex-nav-menu{
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                background: #FFFFFF;
                flex-direction: column;
                padding: 32px;
                gap: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                transform: translateY(-150%);
                transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
                border-bottom: 1px solid #E2E8F0;
                z-index: 999;
            }

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

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

.aisitex-header .aisitex-header-cta{
                display: none;
            }}

.aisitex-footer {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft JhengHei", Inter, sans-serif;
    line-height: 1.6;
    color: #1E293B;
}

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

.aisitex-footer ul{
            list-style: none;
        }

.aisitex-footer .aisitex-brand{
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.2rem;
            color: #0052D9;
        }

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

.aisitex-footer{
            background-color: #0F172A;
            color: #94A3B8;
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }

.aisitex-footer .aisitex-footer-grid{
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

.aisitex-footer .aisitex-footer-brand p{
            margin-top: 16px;
            color: #94A3B8;
            max-width: 320px;
        }

.aisitex-footer .aisitex-footer-col h4{
            color: #fff;
            font-size: 1rem;
            margin-bottom: 20px;
            font-weight: 600;
        }

.aisitex-footer .aisitex-footer-col ul{
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

.aisitex-footer .aisitex-footer-col a{
            color: #94A3B8;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

.aisitex-footer .aisitex-footer-bottom{
            max-width: 1280px;
            margin: 0 auto;
            padding: 24px 24px 0;
            border-top: 1px solid #1E293B;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

@media (max-width: 968px){.aisitex-footer .aisitex-footer-grid{
                grid-template-columns: 1fr;
                gap: 32px;
            }}